1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * thinkpad_acpi.c - ThinkPad ACPI Extras 4 * 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> 7 */ 8 9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11 #define TPACPI_VERSION "0.26" 12 #define TPACPI_SYSFS_VERSION 0x030000 13 14 /* 15 * Changelog: 16 * 2007-10-20 changelog trimmed down 17 * 18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 19 * drivers/misc. 20 * 21 * 2006-11-22 0.13 new maintainer 22 * changelog now lives in git commit history, and will 23 * not be updated further in-file. 24 * 25 * 2005-03-17 0.11 support for 600e, 770x 26 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 27 * 28 * 2005-01-16 0.9 use MODULE_VERSION 29 * thanks to Henrik Brix Andersen <brix@gentoo.org> 30 * fix parameter passing on module loading 31 * thanks to Rusty Russell <rusty@rustcorp.com.au> 32 * thanks to Jim Radford <radford@blackbean.org> 33 * 2004-11-08 0.8 fix init error case, don't return from a macro 34 * thanks to Chris Wright <chrisw@osdl.org> 35 */ 36 37 #include <linux/kernel.h> 38 #include <linux/module.h> 39 #include <linux/init.h> 40 #include <linux/types.h> 41 #include <linux/string.h> 42 #include <linux/list.h> 43 #include <linux/mutex.h> 44 #include <linux/sched.h> 45 #include <linux/sched/signal.h> 46 #include <linux/kthread.h> 47 #include <linux/freezer.h> 48 #include <linux/delay.h> 49 #include <linux/slab.h> 50 #include <linux/nvram.h> 51 #include <linux/proc_fs.h> 52 #include <linux/seq_file.h> 53 #include <linux/sysfs.h> 54 #include <linux/backlight.h> 55 #include <linux/bitops.h> 56 #include <linux/fb.h> 57 #include <linux/platform_device.h> 58 #include <linux/hwmon.h> 59 #include <linux/hwmon-sysfs.h> 60 #include <linux/input.h> 61 #include <linux/leds.h> 62 #include <linux/rfkill.h> 63 #include <linux/dmi.h> 64 #include <linux/jiffies.h> 65 #include <linux/workqueue.h> 66 #include <linux/acpi.h> 67 #include <linux/pci.h> 68 #include <linux/power_supply.h> 69 #include <linux/platform_profile.h> 70 #include <sound/core.h> 71 #include <sound/control.h> 72 #include <sound/initval.h> 73 #include <linux/uaccess.h> 74 #include <acpi/battery.h> 75 #include <acpi/video.h> 76 #include <drm/drm_privacy_screen_driver.h> 77 #include "dual_accel_detect.h" 78 79 /* ThinkPad CMOS commands */ 80 #define TP_CMOS_VOLUME_DOWN 0 81 #define TP_CMOS_VOLUME_UP 1 82 #define TP_CMOS_VOLUME_MUTE 2 83 #define TP_CMOS_BRIGHTNESS_UP 4 84 #define TP_CMOS_BRIGHTNESS_DOWN 5 85 #define TP_CMOS_THINKLIGHT_ON 12 86 #define TP_CMOS_THINKLIGHT_OFF 13 87 88 /* NVRAM Addresses */ 89 enum tp_nvram_addr { 90 TP_NVRAM_ADDR_HK2 = 0x57, 91 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 92 TP_NVRAM_ADDR_VIDEO = 0x59, 93 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 94 TP_NVRAM_ADDR_MIXER = 0x60, 95 }; 96 97 /* NVRAM bit masks */ 98 enum { 99 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 100 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 101 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 102 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 103 TP_NVRAM_MASK_THINKLIGHT = 0x10, 104 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 105 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 106 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 107 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 108 TP_NVRAM_MASK_MUTE = 0x40, 109 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 110 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 111 TP_NVRAM_POS_LEVEL_VOLUME = 0, 112 }; 113 114 /* Misc NVRAM-related */ 115 enum { 116 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 117 }; 118 119 /* ACPI HIDs */ 120 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 121 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 122 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 123 #define TPACPI_ACPI_EC_HID "PNP0C09" 124 125 /* Input IDs */ 126 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 127 #define TPACPI_HKEY_INPUT_VERSION 0x4101 128 129 /* ACPI \WGSV commands */ 130 enum { 131 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 132 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 133 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 134 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 135 }; 136 137 /* TP_ACPI_WGSV_GET_STATE bits */ 138 enum { 139 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 140 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 141 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 142 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 143 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 144 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 145 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 146 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 147 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 148 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 149 }; 150 151 /* HKEY events */ 152 enum tpacpi_hkey_event_t { 153 /* Hotkey-related */ 154 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ 155 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 156 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 157 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 158 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 159 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 160 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 161 TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */ 162 163 /* Reasons for waking up from S3/S4 */ 164 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 165 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 166 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 167 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 168 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 169 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 170 171 /* Auto-sleep after eject request */ 172 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 173 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 174 175 /* Misc bay events */ 176 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 177 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 178 or port replicator */ 179 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 180 dock or port replicator */ 181 /* 182 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013 183 * when keyboard cover is attached, detached or folded onto the back 184 */ 185 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */ 186 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */ 187 188 /* User-interface events */ 189 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 190 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 191 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 192 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 193 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 194 * enter/leave tablet mode 195 */ 196 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 197 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 198 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 199 200 /* Key-related user-interface events */ 201 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 202 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 203 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 204 205 /* Thermal events */ 206 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 207 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 208 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 209 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 210 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ 211 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set 212 * command completed. Related to 213 * AML DYTC */ 214 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation 215 * changed. Related to AML GMTS */ 216 217 /* AC-related events */ 218 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 219 220 /* Further user-interface events */ 221 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 222 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 223 224 /* Misc */ 225 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 226 }; 227 228 /**************************************************************************** 229 * Main driver 230 */ 231 232 #define TPACPI_NAME "thinkpad" 233 #define TPACPI_DESC "ThinkPad ACPI Extras" 234 #define TPACPI_FILE TPACPI_NAME "_acpi" 235 #define TPACPI_URL "http://ibm-acpi.sf.net/" 236 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 237 238 #define TPACPI_PROC_DIR "ibm" 239 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 240 #define TPACPI_DRVR_NAME TPACPI_FILE 241 #define TPACPI_DRVR_SHORTNAME "tpacpi" 242 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 243 244 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 245 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 246 247 #define TPACPI_MAX_ACPI_ARGS 3 248 249 /* Debugging printk groups */ 250 #define TPACPI_DBG_ALL 0xffff 251 #define TPACPI_DBG_DISCLOSETASK 0x8000 252 #define TPACPI_DBG_INIT 0x0001 253 #define TPACPI_DBG_EXIT 0x0002 254 #define TPACPI_DBG_RFKILL 0x0004 255 #define TPACPI_DBG_HKEY 0x0008 256 #define TPACPI_DBG_FAN 0x0010 257 #define TPACPI_DBG_BRGHT 0x0020 258 #define TPACPI_DBG_MIXER 0x0040 259 260 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") 261 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") 262 #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) 263 264 265 /**************************************************************************** 266 * Driver-wide structs and misc. variables 267 */ 268 269 struct ibm_struct; 270 271 struct tp_acpi_drv_struct { 272 const struct acpi_device_id *hid; 273 struct acpi_driver *driver; 274 275 void (*notify) (struct ibm_struct *, u32); 276 acpi_handle *handle; 277 u32 type; 278 struct acpi_device *device; 279 }; 280 281 struct ibm_struct { 282 char *name; 283 284 int (*read) (struct seq_file *); 285 int (*write) (char *); 286 void (*exit) (void); 287 void (*resume) (void); 288 void (*suspend) (void); 289 void (*shutdown) (void); 290 291 struct list_head all_drivers; 292 293 struct tp_acpi_drv_struct *acpi; 294 295 struct { 296 u8 acpi_driver_registered:1; 297 u8 acpi_notify_installed:1; 298 u8 proc_created:1; 299 u8 init_called:1; 300 u8 experimental:1; 301 } flags; 302 }; 303 304 struct ibm_init_struct { 305 char param[32]; 306 307 int (*init) (struct ibm_init_struct *); 308 umode_t base_procfs_mode; 309 struct ibm_struct *data; 310 }; 311 312 /* DMI Quirks */ 313 struct quirk_entry { 314 bool btusb_bug; 315 u32 s2idle_bug_mmio; 316 }; 317 318 static struct quirk_entry quirk_btusb_bug = { 319 .btusb_bug = true, 320 }; 321 322 static struct quirk_entry quirk_s2idle_bug = { 323 .s2idle_bug_mmio = 0xfed80380, 324 }; 325 326 static struct { 327 u32 bluetooth:1; 328 u32 hotkey:1; 329 u32 hotkey_mask:1; 330 u32 hotkey_wlsw:1; 331 enum { 332 TP_HOTKEY_TABLET_NONE = 0, 333 TP_HOTKEY_TABLET_USES_MHKG, 334 TP_HOTKEY_TABLET_USES_GMMS, 335 } hotkey_tablet; 336 u32 kbdlight:1; 337 u32 light:1; 338 u32 light_status:1; 339 u32 bright_acpimode:1; 340 u32 bright_unkfw:1; 341 u32 wan:1; 342 u32 uwb:1; 343 u32 fan_ctrl_status_undef:1; 344 u32 second_fan:1; 345 u32 second_fan_ctl:1; 346 u32 beep_needs_two_args:1; 347 u32 mixer_no_level_control:1; 348 u32 battery_force_primary:1; 349 u32 input_device_registered:1; 350 u32 platform_drv_registered:1; 351 u32 sensors_pdrv_registered:1; 352 u32 hotkey_poll_active:1; 353 u32 has_adaptive_kbd:1; 354 u32 kbd_lang:1; 355 struct quirk_entry *quirks; 356 } tp_features; 357 358 static struct { 359 u16 hotkey_mask_ff:1; 360 u16 volume_ctrl_forbidden:1; 361 } tp_warned; 362 363 struct thinkpad_id_data { 364 unsigned int vendor; /* ThinkPad vendor: 365 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 366 367 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 368 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 369 370 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ 371 u32 ec_model; 372 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ 373 u16 ec_release; 374 375 char *model_str; /* ThinkPad T43 */ 376 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 377 }; 378 static struct thinkpad_id_data thinkpad_id; 379 380 static enum { 381 TPACPI_LIFE_INIT = 0, 382 TPACPI_LIFE_RUNNING, 383 TPACPI_LIFE_EXITING, 384 } tpacpi_lifecycle; 385 386 static int experimental; 387 static u32 dbg_level; 388 389 static struct workqueue_struct *tpacpi_wq; 390 391 enum led_status_t { 392 TPACPI_LED_OFF = 0, 393 TPACPI_LED_ON, 394 TPACPI_LED_BLINK, 395 }; 396 397 /* tpacpi LED class */ 398 struct tpacpi_led_classdev { 399 struct led_classdev led_classdev; 400 int led; 401 }; 402 403 /* brightness level capabilities */ 404 static unsigned int bright_maxlvl; /* 0 = unknown */ 405 406 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 407 static int dbg_wlswemul; 408 static bool tpacpi_wlsw_emulstate; 409 static int dbg_bluetoothemul; 410 static bool tpacpi_bluetooth_emulstate; 411 static int dbg_wwanemul; 412 static bool tpacpi_wwan_emulstate; 413 static int dbg_uwbemul; 414 static bool tpacpi_uwb_emulstate; 415 #endif 416 417 418 /************************************************************************* 419 * Debugging helpers 420 */ 421 422 #define dbg_printk(a_dbg_level, format, arg...) \ 423 do { \ 424 if (dbg_level & (a_dbg_level)) \ 425 printk(KERN_DEBUG pr_fmt("%s: " format), \ 426 __func__, ##arg); \ 427 } while (0) 428 429 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 430 #define vdbg_printk dbg_printk 431 static const char *str_supported(int is_supported); 432 #else 433 static inline const char *str_supported(int is_supported) { return ""; } 434 #define vdbg_printk(a_dbg_level, format, arg...) \ 435 do { if (0) no_printk(format, ##arg); } while (0) 436 #endif 437 438 static void tpacpi_log_usertask(const char * const what) 439 { 440 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 441 what, task_tgid_vnr(current)); 442 } 443 444 #define tpacpi_disclose_usertask(what, format, arg...) \ 445 do { \ 446 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 447 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 448 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 449 what, task_tgid_vnr(current), ## arg); \ 450 } \ 451 } while (0) 452 453 /* 454 * Quirk handling helpers 455 * 456 * ThinkPad IDs and versions seen in the field so far are 457 * two or three characters from the set [0-9A-Z], i.e. base 36. 458 * 459 * We use values well outside that range as specials. 460 */ 461 462 #define TPACPI_MATCH_ANY 0xffffffffU 463 #define TPACPI_MATCH_ANY_VERSION 0xffffU 464 #define TPACPI_MATCH_UNKNOWN 0U 465 466 /* TPID('1', 'Y') == 0x3159 */ 467 #define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) 468 #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) 469 #define TPVER TPID 470 471 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 472 { .vendor = PCI_VENDOR_ID_IBM, \ 473 .bios = TPID(__id1, __id2), \ 474 .ec = TPACPI_MATCH_ANY, \ 475 .quirks = (__quirk) } 476 477 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 478 { .vendor = PCI_VENDOR_ID_LENOVO, \ 479 .bios = TPID(__id1, __id2), \ 480 .ec = TPACPI_MATCH_ANY, \ 481 .quirks = (__quirk) } 482 483 #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ 484 { .vendor = PCI_VENDOR_ID_LENOVO, \ 485 .bios = TPID3(__id1, __id2, __id3), \ 486 .ec = TPACPI_MATCH_ANY, \ 487 .quirks = (__quirk) } 488 489 #define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ 490 { .vendor = PCI_VENDOR_ID_IBM, \ 491 .bios = TPACPI_MATCH_ANY, \ 492 .ec = TPID(__id1, __id2), \ 493 .quirks = (__quirk) } 494 495 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 496 { .vendor = PCI_VENDOR_ID_LENOVO, \ 497 .bios = TPACPI_MATCH_ANY, \ 498 .ec = TPID(__id1, __id2), \ 499 .quirks = (__quirk) } 500 501 struct tpacpi_quirk { 502 unsigned int vendor; 503 u32 bios; 504 u32 ec; 505 unsigned long quirks; 506 }; 507 508 /** 509 * tpacpi_check_quirks() - search BIOS/EC version on a list 510 * @qlist: array of &struct tpacpi_quirk 511 * @qlist_size: number of elements in @qlist 512 * 513 * Iterates over a quirks list until one is found that matches the 514 * ThinkPad's vendor, BIOS and EC model. 515 * 516 * Returns 0 if nothing matches, otherwise returns the quirks field of 517 * the matching &struct tpacpi_quirk entry. 518 * 519 * The match criteria is: vendor, ec and bios much match. 520 */ 521 static unsigned long __init tpacpi_check_quirks( 522 const struct tpacpi_quirk *qlist, 523 unsigned int qlist_size) 524 { 525 while (qlist_size) { 526 if ((qlist->vendor == thinkpad_id.vendor || 527 qlist->vendor == TPACPI_MATCH_ANY) && 528 (qlist->bios == thinkpad_id.bios_model || 529 qlist->bios == TPACPI_MATCH_ANY) && 530 (qlist->ec == thinkpad_id.ec_model || 531 qlist->ec == TPACPI_MATCH_ANY)) 532 return qlist->quirks; 533 534 qlist_size--; 535 qlist++; 536 } 537 return 0; 538 } 539 540 static inline bool __pure __init tpacpi_is_lenovo(void) 541 { 542 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 543 } 544 545 static inline bool __pure __init tpacpi_is_ibm(void) 546 { 547 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 548 } 549 550 /**************************************************************************** 551 **************************************************************************** 552 * 553 * ACPI Helpers and device model 554 * 555 **************************************************************************** 556 ****************************************************************************/ 557 558 /************************************************************************* 559 * ACPI basic handles 560 */ 561 562 static acpi_handle root_handle; 563 static acpi_handle ec_handle; 564 565 #define TPACPI_HANDLE(object, parent, paths...) \ 566 static acpi_handle object##_handle; \ 567 static const acpi_handle * const object##_parent __initconst = \ 568 &parent##_handle; \ 569 static char *object##_paths[] __initdata = { paths } 570 571 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 572 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 573 574 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 575 /* T4x, X31, X40 */ 576 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 577 "\\CMS", /* R40, R40e */ 578 ); /* all others */ 579 580 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 581 "^HKEY", /* R30, R31 */ 582 "HKEY", /* all others */ 583 ); /* 570 */ 584 585 /************************************************************************* 586 * ACPI helpers 587 */ 588 589 static int acpi_evalf(acpi_handle handle, 590 int *res, char *method, char *fmt, ...) 591 { 592 char *fmt0 = fmt; 593 struct acpi_object_list params; 594 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 595 struct acpi_buffer result, *resultp; 596 union acpi_object out_obj; 597 acpi_status status; 598 va_list ap; 599 char res_type; 600 int success; 601 int quiet; 602 603 if (!*fmt) { 604 pr_err("acpi_evalf() called with empty format\n"); 605 return 0; 606 } 607 608 if (*fmt == 'q') { 609 quiet = 1; 610 fmt++; 611 } else 612 quiet = 0; 613 614 res_type = *(fmt++); 615 616 params.count = 0; 617 params.pointer = &in_objs[0]; 618 619 va_start(ap, fmt); 620 while (*fmt) { 621 char c = *(fmt++); 622 switch (c) { 623 case 'd': /* int */ 624 in_objs[params.count].integer.value = va_arg(ap, int); 625 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 626 break; 627 /* add more types as needed */ 628 default: 629 pr_err("acpi_evalf() called with invalid format character '%c'\n", 630 c); 631 va_end(ap); 632 return 0; 633 } 634 } 635 va_end(ap); 636 637 if (res_type != 'v') { 638 result.length = sizeof(out_obj); 639 result.pointer = &out_obj; 640 resultp = &result; 641 } else 642 resultp = NULL; 643 644 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 645 646 switch (res_type) { 647 case 'd': /* int */ 648 success = (status == AE_OK && 649 out_obj.type == ACPI_TYPE_INTEGER); 650 if (success && res) 651 *res = out_obj.integer.value; 652 break; 653 case 'v': /* void */ 654 success = status == AE_OK; 655 break; 656 /* add more types as needed */ 657 default: 658 pr_err("acpi_evalf() called with invalid format character '%c'\n", 659 res_type); 660 return 0; 661 } 662 663 if (!success && !quiet) 664 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 665 method, fmt0, acpi_format_exception(status)); 666 667 return success; 668 } 669 670 static int acpi_ec_read(int i, u8 *p) 671 { 672 int v; 673 674 if (ecrd_handle) { 675 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 676 return 0; 677 *p = v; 678 } else { 679 if (ec_read(i, p) < 0) 680 return 0; 681 } 682 683 return 1; 684 } 685 686 static int acpi_ec_write(int i, u8 v) 687 { 688 if (ecwr_handle) { 689 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 690 return 0; 691 } else { 692 if (ec_write(i, v) < 0) 693 return 0; 694 } 695 696 return 1; 697 } 698 699 static int issue_thinkpad_cmos_command(int cmos_cmd) 700 { 701 if (!cmos_handle) 702 return -ENXIO; 703 704 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 705 return -EIO; 706 707 return 0; 708 } 709 710 /************************************************************************* 711 * ACPI device model 712 */ 713 714 #define TPACPI_ACPIHANDLE_INIT(object) \ 715 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 716 object##_paths, ARRAY_SIZE(object##_paths)) 717 718 static void __init drv_acpi_handle_init(const char *name, 719 acpi_handle *handle, const acpi_handle parent, 720 char **paths, const int num_paths) 721 { 722 int i; 723 acpi_status status; 724 725 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 726 name); 727 728 for (i = 0; i < num_paths; i++) { 729 status = acpi_get_handle(parent, paths[i], handle); 730 if (ACPI_SUCCESS(status)) { 731 dbg_printk(TPACPI_DBG_INIT, 732 "Found ACPI handle %s for %s\n", 733 paths[i], name); 734 return; 735 } 736 } 737 738 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 739 name); 740 *handle = NULL; 741 } 742 743 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 744 u32 level, void *context, void **return_value) 745 { 746 if (!strcmp(context, "video")) { 747 struct acpi_device *dev = acpi_fetch_acpi_dev(handle); 748 749 if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 750 return AE_OK; 751 } 752 753 *(acpi_handle *)return_value = handle; 754 755 return AE_CTRL_TERMINATE; 756 } 757 758 static void __init tpacpi_acpi_handle_locate(const char *name, 759 const char *hid, 760 acpi_handle *handle) 761 { 762 acpi_status status; 763 acpi_handle device_found; 764 765 BUG_ON(!name || !handle); 766 vdbg_printk(TPACPI_DBG_INIT, 767 "trying to locate ACPI handle for %s, using HID %s\n", 768 name, hid ? hid : "NULL"); 769 770 memset(&device_found, 0, sizeof(device_found)); 771 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 772 (void *)name, &device_found); 773 774 *handle = NULL; 775 776 if (ACPI_SUCCESS(status)) { 777 *handle = device_found; 778 dbg_printk(TPACPI_DBG_INIT, 779 "Found ACPI handle for %s\n", name); 780 } else { 781 vdbg_printk(TPACPI_DBG_INIT, 782 "Could not locate an ACPI handle for %s: %s\n", 783 name, acpi_format_exception(status)); 784 } 785 } 786 787 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 788 { 789 struct ibm_struct *ibm = data; 790 791 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 792 return; 793 794 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 795 return; 796 797 ibm->acpi->notify(ibm, event); 798 } 799 800 static int __init setup_acpi_notify(struct ibm_struct *ibm) 801 { 802 acpi_status status; 803 804 BUG_ON(!ibm->acpi); 805 806 if (!*ibm->acpi->handle) 807 return 0; 808 809 vdbg_printk(TPACPI_DBG_INIT, 810 "setting up ACPI notify for %s\n", ibm->name); 811 812 ibm->acpi->device = acpi_fetch_acpi_dev(*ibm->acpi->handle); 813 if (!ibm->acpi->device) { 814 pr_err("acpi_fetch_acpi_dev(%s) failed\n", ibm->name); 815 return -ENODEV; 816 } 817 818 ibm->acpi->device->driver_data = ibm; 819 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 820 TPACPI_ACPI_EVENT_PREFIX, 821 ibm->name); 822 823 status = acpi_install_notify_handler(*ibm->acpi->handle, 824 ibm->acpi->type, dispatch_acpi_notify, ibm); 825 if (ACPI_FAILURE(status)) { 826 if (status == AE_ALREADY_EXISTS) { 827 pr_notice("another device driver is already handling %s events\n", 828 ibm->name); 829 } else { 830 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 831 ibm->name, acpi_format_exception(status)); 832 } 833 return -ENODEV; 834 } 835 ibm->flags.acpi_notify_installed = 1; 836 return 0; 837 } 838 839 static int __init tpacpi_device_add(struct acpi_device *device) 840 { 841 return 0; 842 } 843 844 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 845 { 846 int rc; 847 848 dbg_printk(TPACPI_DBG_INIT, 849 "registering %s as an ACPI driver\n", ibm->name); 850 851 BUG_ON(!ibm->acpi); 852 853 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 854 if (!ibm->acpi->driver) { 855 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 856 return -ENOMEM; 857 } 858 859 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 860 ibm->acpi->driver->ids = ibm->acpi->hid; 861 862 ibm->acpi->driver->ops.add = &tpacpi_device_add; 863 864 rc = acpi_bus_register_driver(ibm->acpi->driver); 865 if (rc < 0) { 866 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 867 ibm->name, rc); 868 kfree(ibm->acpi->driver); 869 ibm->acpi->driver = NULL; 870 } else if (!rc) 871 ibm->flags.acpi_driver_registered = 1; 872 873 return rc; 874 } 875 876 877 /**************************************************************************** 878 **************************************************************************** 879 * 880 * Procfs Helpers 881 * 882 **************************************************************************** 883 ****************************************************************************/ 884 885 static int dispatch_proc_show(struct seq_file *m, void *v) 886 { 887 struct ibm_struct *ibm = m->private; 888 889 if (!ibm || !ibm->read) 890 return -EINVAL; 891 return ibm->read(m); 892 } 893 894 static int dispatch_proc_open(struct inode *inode, struct file *file) 895 { 896 return single_open(file, dispatch_proc_show, pde_data(inode)); 897 } 898 899 static ssize_t dispatch_proc_write(struct file *file, 900 const char __user *userbuf, 901 size_t count, loff_t *pos) 902 { 903 struct ibm_struct *ibm = pde_data(file_inode(file)); 904 char *kernbuf; 905 int ret; 906 907 if (!ibm || !ibm->write) 908 return -EINVAL; 909 if (count > PAGE_SIZE - 1) 910 return -EINVAL; 911 912 kernbuf = kmalloc(count + 1, GFP_KERNEL); 913 if (!kernbuf) 914 return -ENOMEM; 915 916 if (copy_from_user(kernbuf, userbuf, count)) { 917 kfree(kernbuf); 918 return -EFAULT; 919 } 920 921 kernbuf[count] = 0; 922 ret = ibm->write(kernbuf); 923 if (ret == 0) 924 ret = count; 925 926 kfree(kernbuf); 927 928 return ret; 929 } 930 931 static const struct proc_ops dispatch_proc_ops = { 932 .proc_open = dispatch_proc_open, 933 .proc_read = seq_read, 934 .proc_lseek = seq_lseek, 935 .proc_release = single_release, 936 .proc_write = dispatch_proc_write, 937 }; 938 939 /**************************************************************************** 940 **************************************************************************** 941 * 942 * Device model: input, hwmon and platform 943 * 944 **************************************************************************** 945 ****************************************************************************/ 946 947 static struct platform_device *tpacpi_pdev; 948 static struct platform_device *tpacpi_sensors_pdev; 949 static struct device *tpacpi_hwmon; 950 static struct input_dev *tpacpi_inputdev; 951 static struct mutex tpacpi_inputdev_send_mutex; 952 static LIST_HEAD(tpacpi_all_drivers); 953 954 #ifdef CONFIG_PM_SLEEP 955 static int tpacpi_suspend_handler(struct device *dev) 956 { 957 struct ibm_struct *ibm, *itmp; 958 959 list_for_each_entry_safe(ibm, itmp, 960 &tpacpi_all_drivers, 961 all_drivers) { 962 if (ibm->suspend) 963 (ibm->suspend)(); 964 } 965 966 return 0; 967 } 968 969 static int tpacpi_resume_handler(struct device *dev) 970 { 971 struct ibm_struct *ibm, *itmp; 972 973 list_for_each_entry_safe(ibm, itmp, 974 &tpacpi_all_drivers, 975 all_drivers) { 976 if (ibm->resume) 977 (ibm->resume)(); 978 } 979 980 return 0; 981 } 982 #endif 983 984 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 985 tpacpi_suspend_handler, tpacpi_resume_handler); 986 987 static void tpacpi_shutdown_handler(struct platform_device *pdev) 988 { 989 struct ibm_struct *ibm, *itmp; 990 991 list_for_each_entry_safe(ibm, itmp, 992 &tpacpi_all_drivers, 993 all_drivers) { 994 if (ibm->shutdown) 995 (ibm->shutdown)(); 996 } 997 } 998 999 /************************************************************************* 1000 * sysfs support helpers 1001 */ 1002 1003 static int parse_strtoul(const char *buf, 1004 unsigned long max, unsigned long *value) 1005 { 1006 char *endp; 1007 1008 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1009 endp = skip_spaces(endp); 1010 if (*endp || *value > max) 1011 return -EINVAL; 1012 1013 return 0; 1014 } 1015 1016 static void tpacpi_disable_brightness_delay(void) 1017 { 1018 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1019 pr_notice("ACPI backlight control delay disabled\n"); 1020 } 1021 1022 static void printk_deprecated_attribute(const char * const what, 1023 const char * const details) 1024 { 1025 tpacpi_log_usertask("deprecated sysfs attribute"); 1026 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1027 what, details); 1028 } 1029 1030 /************************************************************************* 1031 * rfkill and radio control support helpers 1032 */ 1033 1034 /* 1035 * ThinkPad-ACPI firmware handling model: 1036 * 1037 * WLSW (master wireless switch) is event-driven, and is common to all 1038 * firmware-controlled radios. It cannot be controlled, just monitored, 1039 * as expected. It overrides all radio state in firmware 1040 * 1041 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1042 * (TODO: verify how WLSW interacts with the returned radio state). 1043 * 1044 * The only time there are shadow radio state changes, is when 1045 * masked-off hotkeys are used. 1046 */ 1047 1048 /* 1049 * Internal driver API for radio state: 1050 * 1051 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1052 * bool: true means radio blocked (off) 1053 */ 1054 enum tpacpi_rfkill_state { 1055 TPACPI_RFK_RADIO_OFF = 0, 1056 TPACPI_RFK_RADIO_ON 1057 }; 1058 1059 /* rfkill switches */ 1060 enum tpacpi_rfk_id { 1061 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1062 TPACPI_RFK_WWAN_SW_ID, 1063 TPACPI_RFK_UWB_SW_ID, 1064 TPACPI_RFK_SW_MAX 1065 }; 1066 1067 static const char *tpacpi_rfkill_names[] = { 1068 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1069 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1070 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1071 [TPACPI_RFK_SW_MAX] = NULL 1072 }; 1073 1074 /* ThinkPad-ACPI rfkill subdriver */ 1075 struct tpacpi_rfk { 1076 struct rfkill *rfkill; 1077 enum tpacpi_rfk_id id; 1078 const struct tpacpi_rfk_ops *ops; 1079 }; 1080 1081 struct tpacpi_rfk_ops { 1082 /* firmware interface */ 1083 int (*get_status)(void); 1084 int (*set_status)(const enum tpacpi_rfkill_state); 1085 }; 1086 1087 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1088 1089 /* Query FW and update rfkill sw state for a given rfkill switch */ 1090 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1091 { 1092 int status; 1093 1094 if (!tp_rfk) 1095 return -ENODEV; 1096 1097 status = (tp_rfk->ops->get_status)(); 1098 if (status < 0) 1099 return status; 1100 1101 rfkill_set_sw_state(tp_rfk->rfkill, 1102 (status == TPACPI_RFK_RADIO_OFF)); 1103 1104 return status; 1105 } 1106 1107 /* 1108 * Sync the HW-blocking state of all rfkill switches, 1109 * do notice it causes the rfkill core to schedule uevents 1110 */ 1111 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1112 { 1113 unsigned int i; 1114 struct tpacpi_rfk *tp_rfk; 1115 1116 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1117 tp_rfk = tpacpi_rfkill_switches[i]; 1118 if (tp_rfk) { 1119 if (rfkill_set_hw_state(tp_rfk->rfkill, 1120 blocked)) { 1121 /* ignore -- we track sw block */ 1122 } 1123 } 1124 } 1125 } 1126 1127 /* Call to get the WLSW state from the firmware */ 1128 static int hotkey_get_wlsw(void); 1129 1130 /* Call to query WLSW state and update all rfkill switches */ 1131 static bool tpacpi_rfk_check_hwblock_state(void) 1132 { 1133 int res = hotkey_get_wlsw(); 1134 int hw_blocked; 1135 1136 /* When unknown or unsupported, we have to assume it is unblocked */ 1137 if (res < 0) 1138 return false; 1139 1140 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1141 tpacpi_rfk_update_hwblock_state(hw_blocked); 1142 1143 return hw_blocked; 1144 } 1145 1146 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1147 { 1148 struct tpacpi_rfk *tp_rfk = data; 1149 int res; 1150 1151 dbg_printk(TPACPI_DBG_RFKILL, 1152 "request to change radio state to %s\n", 1153 blocked ? "blocked" : "unblocked"); 1154 1155 /* try to set radio state */ 1156 res = (tp_rfk->ops->set_status)(blocked ? 1157 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1158 1159 /* and update the rfkill core with whatever the FW really did */ 1160 tpacpi_rfk_update_swstate(tp_rfk); 1161 1162 return (res < 0) ? res : 0; 1163 } 1164 1165 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1166 .set_block = tpacpi_rfk_hook_set_block, 1167 }; 1168 1169 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1170 const struct tpacpi_rfk_ops *tp_rfkops, 1171 const enum rfkill_type rfktype, 1172 const char *name, 1173 const bool set_default) 1174 { 1175 struct tpacpi_rfk *atp_rfk; 1176 int res; 1177 bool sw_state = false; 1178 bool hw_state; 1179 int sw_status; 1180 1181 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1182 1183 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1184 if (atp_rfk) 1185 atp_rfk->rfkill = rfkill_alloc(name, 1186 &tpacpi_pdev->dev, 1187 rfktype, 1188 &tpacpi_rfk_rfkill_ops, 1189 atp_rfk); 1190 if (!atp_rfk || !atp_rfk->rfkill) { 1191 pr_err("failed to allocate memory for rfkill class\n"); 1192 kfree(atp_rfk); 1193 return -ENOMEM; 1194 } 1195 1196 atp_rfk->id = id; 1197 atp_rfk->ops = tp_rfkops; 1198 1199 sw_status = (tp_rfkops->get_status)(); 1200 if (sw_status < 0) { 1201 pr_err("failed to read initial state for %s, error %d\n", 1202 name, sw_status); 1203 } else { 1204 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1205 if (set_default) { 1206 /* try to keep the initial state, since we ask the 1207 * firmware to preserve it across S5 in NVRAM */ 1208 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1209 } 1210 } 1211 hw_state = tpacpi_rfk_check_hwblock_state(); 1212 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1213 1214 res = rfkill_register(atp_rfk->rfkill); 1215 if (res < 0) { 1216 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1217 rfkill_destroy(atp_rfk->rfkill); 1218 kfree(atp_rfk); 1219 return res; 1220 } 1221 1222 tpacpi_rfkill_switches[id] = atp_rfk; 1223 1224 pr_info("rfkill switch %s: radio is %sblocked\n", 1225 name, (sw_state || hw_state) ? "" : "un"); 1226 return 0; 1227 } 1228 1229 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1230 { 1231 struct tpacpi_rfk *tp_rfk; 1232 1233 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1234 1235 tp_rfk = tpacpi_rfkill_switches[id]; 1236 if (tp_rfk) { 1237 rfkill_unregister(tp_rfk->rfkill); 1238 rfkill_destroy(tp_rfk->rfkill); 1239 tpacpi_rfkill_switches[id] = NULL; 1240 kfree(tp_rfk); 1241 } 1242 } 1243 1244 static void printk_deprecated_rfkill_attribute(const char * const what) 1245 { 1246 printk_deprecated_attribute(what, 1247 "Please switch to generic rfkill before year 2010"); 1248 } 1249 1250 /* sysfs <radio> enable ------------------------------------------------ */ 1251 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1252 struct device_attribute *attr, 1253 char *buf) 1254 { 1255 int status; 1256 1257 printk_deprecated_rfkill_attribute(attr->attr.name); 1258 1259 /* This is in the ABI... */ 1260 if (tpacpi_rfk_check_hwblock_state()) { 1261 status = TPACPI_RFK_RADIO_OFF; 1262 } else { 1263 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1264 if (status < 0) 1265 return status; 1266 } 1267 1268 return sysfs_emit(buf, "%d\n", 1269 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1270 } 1271 1272 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1273 struct device_attribute *attr, 1274 const char *buf, size_t count) 1275 { 1276 unsigned long t; 1277 int res; 1278 1279 printk_deprecated_rfkill_attribute(attr->attr.name); 1280 1281 if (parse_strtoul(buf, 1, &t)) 1282 return -EINVAL; 1283 1284 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1285 1286 /* This is in the ABI... */ 1287 if (tpacpi_rfk_check_hwblock_state() && !!t) 1288 return -EPERM; 1289 1290 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1291 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1292 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1293 1294 return (res < 0) ? res : count; 1295 } 1296 1297 /* procfs -------------------------------------------------------------- */ 1298 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1299 { 1300 if (id >= TPACPI_RFK_SW_MAX) 1301 seq_printf(m, "status:\t\tnot supported\n"); 1302 else { 1303 int status; 1304 1305 /* This is in the ABI... */ 1306 if (tpacpi_rfk_check_hwblock_state()) { 1307 status = TPACPI_RFK_RADIO_OFF; 1308 } else { 1309 status = tpacpi_rfk_update_swstate( 1310 tpacpi_rfkill_switches[id]); 1311 if (status < 0) 1312 return status; 1313 } 1314 1315 seq_printf(m, "status:\t\t%s\n", 1316 (status == TPACPI_RFK_RADIO_ON) ? 1317 "enabled" : "disabled"); 1318 seq_printf(m, "commands:\tenable, disable\n"); 1319 } 1320 1321 return 0; 1322 } 1323 1324 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1325 { 1326 char *cmd; 1327 int status = -1; 1328 int res = 0; 1329 1330 if (id >= TPACPI_RFK_SW_MAX) 1331 return -ENODEV; 1332 1333 while ((cmd = strsep(&buf, ","))) { 1334 if (strlencmp(cmd, "enable") == 0) 1335 status = TPACPI_RFK_RADIO_ON; 1336 else if (strlencmp(cmd, "disable") == 0) 1337 status = TPACPI_RFK_RADIO_OFF; 1338 else 1339 return -EINVAL; 1340 } 1341 1342 if (status != -1) { 1343 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1344 (status == TPACPI_RFK_RADIO_ON) ? 1345 "enable" : "disable", 1346 tpacpi_rfkill_names[id]); 1347 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1348 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1349 } 1350 1351 return res; 1352 } 1353 1354 /************************************************************************* 1355 * thinkpad-acpi driver attributes 1356 */ 1357 1358 /* interface_version --------------------------------------------------- */ 1359 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1360 { 1361 return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION); 1362 } 1363 static DRIVER_ATTR_RO(interface_version); 1364 1365 /* debug_level --------------------------------------------------------- */ 1366 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1367 { 1368 return sysfs_emit(buf, "0x%04x\n", dbg_level); 1369 } 1370 1371 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1372 size_t count) 1373 { 1374 unsigned long t; 1375 1376 if (parse_strtoul(buf, 0xffff, &t)) 1377 return -EINVAL; 1378 1379 dbg_level = t; 1380 1381 return count; 1382 } 1383 static DRIVER_ATTR_RW(debug_level); 1384 1385 /* version ------------------------------------------------------------- */ 1386 static ssize_t version_show(struct device_driver *drv, char *buf) 1387 { 1388 return sysfs_emit(buf, "%s v%s\n", 1389 TPACPI_DESC, TPACPI_VERSION); 1390 } 1391 static DRIVER_ATTR_RO(version); 1392 1393 /* --------------------------------------------------------------------- */ 1394 1395 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1396 1397 /* wlsw_emulstate ------------------------------------------------------ */ 1398 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1399 { 1400 return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate); 1401 } 1402 1403 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1404 size_t count) 1405 { 1406 unsigned long t; 1407 1408 if (parse_strtoul(buf, 1, &t)) 1409 return -EINVAL; 1410 1411 if (tpacpi_wlsw_emulstate != !!t) { 1412 tpacpi_wlsw_emulstate = !!t; 1413 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1414 } 1415 1416 return count; 1417 } 1418 static DRIVER_ATTR_RW(wlsw_emulstate); 1419 1420 /* bluetooth_emulstate ------------------------------------------------- */ 1421 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1422 { 1423 return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate); 1424 } 1425 1426 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1427 const char *buf, size_t count) 1428 { 1429 unsigned long t; 1430 1431 if (parse_strtoul(buf, 1, &t)) 1432 return -EINVAL; 1433 1434 tpacpi_bluetooth_emulstate = !!t; 1435 1436 return count; 1437 } 1438 static DRIVER_ATTR_RW(bluetooth_emulstate); 1439 1440 /* wwan_emulstate ------------------------------------------------- */ 1441 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1442 { 1443 return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate); 1444 } 1445 1446 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1447 size_t count) 1448 { 1449 unsigned long t; 1450 1451 if (parse_strtoul(buf, 1, &t)) 1452 return -EINVAL; 1453 1454 tpacpi_wwan_emulstate = !!t; 1455 1456 return count; 1457 } 1458 static DRIVER_ATTR_RW(wwan_emulstate); 1459 1460 /* uwb_emulstate ------------------------------------------------- */ 1461 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1462 { 1463 return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate); 1464 } 1465 1466 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1467 size_t count) 1468 { 1469 unsigned long t; 1470 1471 if (parse_strtoul(buf, 1, &t)) 1472 return -EINVAL; 1473 1474 tpacpi_uwb_emulstate = !!t; 1475 1476 return count; 1477 } 1478 static DRIVER_ATTR_RW(uwb_emulstate); 1479 #endif 1480 1481 /************************************************************************* 1482 * Firmware Data 1483 */ 1484 1485 /* 1486 * Table of recommended minimum BIOS versions 1487 * 1488 * Reasons for listing: 1489 * 1. Stable BIOS, listed because the unknown amount of 1490 * bugs and bad ACPI behaviour on older versions 1491 * 1492 * 2. BIOS or EC fw with known bugs that trigger on Linux 1493 * 1494 * 3. BIOS with known reduced functionality in older versions 1495 * 1496 * We recommend the latest BIOS and EC version. 1497 * We only support the latest BIOS and EC fw version as a rule. 1498 * 1499 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1500 * Information from users in ThinkWiki 1501 * 1502 * WARNING: we use this table also to detect that the machine is 1503 * a ThinkPad in some cases, so don't remove entries lightly. 1504 */ 1505 1506 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1507 { .vendor = (__v), \ 1508 .bios = TPID(__id1, __id2), \ 1509 .ec = TPACPI_MATCH_ANY, \ 1510 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1511 | TPVER(__bv1, __bv2) } 1512 1513 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1514 __eid, __ev1, __ev2) \ 1515 { .vendor = (__v), \ 1516 .bios = TPID(__bid1, __bid2), \ 1517 .ec = __eid, \ 1518 .quirks = TPVER(__ev1, __ev2) << 16 \ 1519 | TPVER(__bv1, __bv2) } 1520 1521 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1522 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1523 1524 /* Outdated IBM BIOSes often lack the EC id string */ 1525 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1526 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1527 __bv1, __bv2, TPID(__id1, __id2), \ 1528 __ev1, __ev2), \ 1529 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1530 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1531 __ev1, __ev2) 1532 1533 /* Outdated IBM BIOSes often lack the EC id string */ 1534 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1535 __eid1, __eid2, __ev1, __ev2) \ 1536 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1537 __bv1, __bv2, TPID(__eid1, __eid2), \ 1538 __ev1, __ev2), \ 1539 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1540 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1541 __ev1, __ev2) 1542 1543 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1544 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1545 1546 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1547 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1548 __bv1, __bv2, TPID(__id1, __id2), \ 1549 __ev1, __ev2) 1550 1551 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1552 __eid1, __eid2, __ev1, __ev2) \ 1553 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1554 __bv1, __bv2, TPID(__eid1, __eid2), \ 1555 __ev1, __ev2) 1556 1557 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1558 /* Numeric models ------------------ */ 1559 /* FW MODEL BIOS VERS */ 1560 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1561 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1562 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1563 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1564 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1565 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1566 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1567 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1568 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1569 1570 /* A-series ------------------------- */ 1571 /* FW MODEL BIOS VERS EC VERS */ 1572 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1573 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1574 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1575 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1576 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1577 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1578 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1579 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1580 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1581 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1582 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1583 1584 /* G-series ------------------------- */ 1585 /* FW MODEL BIOS VERS */ 1586 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1587 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1588 1589 /* R-series, T-series --------------- */ 1590 /* FW MODEL BIOS VERS EC VERS */ 1591 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1592 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1593 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1594 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1595 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1596 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1597 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1598 T40/p, T41/p, T42/p (1) */ 1599 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1600 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1601 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1602 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1603 1604 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1605 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1606 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1607 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1608 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1609 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1610 1611 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1612 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1613 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1614 1615 /* BIOS FW BIOS VERS EC FW EC VERS */ 1616 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1617 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1618 1619 /* X-series ------------------------- */ 1620 /* FW MODEL BIOS VERS EC VERS */ 1621 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1622 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1623 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1624 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1625 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1626 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1627 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1628 1629 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1630 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1631 1632 /* (0) - older versions lack DMI EC fw string and functionality */ 1633 /* (1) - older versions known to lack functionality */ 1634 }; 1635 1636 #undef TPV_QL1 1637 #undef TPV_QL0 1638 #undef TPV_QI2 1639 #undef TPV_QI1 1640 #undef TPV_QI0 1641 #undef TPV_Q_X 1642 #undef TPV_Q 1643 1644 static void __init tpacpi_check_outdated_fw(void) 1645 { 1646 unsigned long fwvers; 1647 u16 ec_version, bios_version; 1648 1649 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1650 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1651 1652 if (!fwvers) 1653 return; 1654 1655 bios_version = fwvers & 0xffffU; 1656 ec_version = (fwvers >> 16) & 0xffffU; 1657 1658 /* note that unknown versions are set to 0x0000 and we use that */ 1659 if ((bios_version > thinkpad_id.bios_release) || 1660 (ec_version > thinkpad_id.ec_release && 1661 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1662 /* 1663 * The changelogs would let us track down the exact 1664 * reason, but it is just too much of a pain to track 1665 * it. We only list BIOSes that are either really 1666 * broken, or really stable to begin with, so it is 1667 * best if the user upgrades the firmware anyway. 1668 */ 1669 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1670 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1671 } 1672 } 1673 1674 static bool __init tpacpi_is_fw_known(void) 1675 { 1676 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1677 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1678 } 1679 1680 /**************************************************************************** 1681 **************************************************************************** 1682 * 1683 * Subdrivers 1684 * 1685 **************************************************************************** 1686 ****************************************************************************/ 1687 1688 /************************************************************************* 1689 * thinkpad-acpi metadata subdriver 1690 */ 1691 1692 static int thinkpad_acpi_driver_read(struct seq_file *m) 1693 { 1694 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1695 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1696 return 0; 1697 } 1698 1699 static struct ibm_struct thinkpad_acpi_driver_data = { 1700 .name = "driver", 1701 .read = thinkpad_acpi_driver_read, 1702 }; 1703 1704 /************************************************************************* 1705 * Hotkey subdriver 1706 */ 1707 1708 /* 1709 * ThinkPad firmware event model 1710 * 1711 * The ThinkPad firmware has two main event interfaces: normal ACPI 1712 * notifications (which follow the ACPI standard), and a private event 1713 * interface. 1714 * 1715 * The private event interface also issues events for the hotkeys. As 1716 * the driver gained features, the event handling code ended up being 1717 * built around the hotkey subdriver. This will need to be refactored 1718 * to a more formal event API eventually. 1719 * 1720 * Some "hotkeys" are actually supposed to be used as event reports, 1721 * such as "brightness has changed", "volume has changed", depending on 1722 * the ThinkPad model and how the firmware is operating. 1723 * 1724 * Unlike other classes, hotkey-class events have mask/unmask control on 1725 * non-ancient firmware. However, how it behaves changes a lot with the 1726 * firmware model and version. 1727 */ 1728 1729 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1730 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1731 TP_ACPI_HOTKEYSCAN_FNF2, 1732 TP_ACPI_HOTKEYSCAN_FNF3, 1733 TP_ACPI_HOTKEYSCAN_FNF4, 1734 TP_ACPI_HOTKEYSCAN_FNF5, 1735 TP_ACPI_HOTKEYSCAN_FNF6, 1736 TP_ACPI_HOTKEYSCAN_FNF7, 1737 TP_ACPI_HOTKEYSCAN_FNF8, 1738 TP_ACPI_HOTKEYSCAN_FNF9, 1739 TP_ACPI_HOTKEYSCAN_FNF10, 1740 TP_ACPI_HOTKEYSCAN_FNF11, 1741 TP_ACPI_HOTKEYSCAN_FNF12, 1742 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1743 TP_ACPI_HOTKEYSCAN_FNINSERT, 1744 TP_ACPI_HOTKEYSCAN_FNDELETE, 1745 TP_ACPI_HOTKEYSCAN_FNHOME, 1746 TP_ACPI_HOTKEYSCAN_FNEND, 1747 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1748 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1749 TP_ACPI_HOTKEYSCAN_FNSPACE, 1750 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1751 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1752 TP_ACPI_HOTKEYSCAN_MUTE, 1753 TP_ACPI_HOTKEYSCAN_THINKPAD, 1754 TP_ACPI_HOTKEYSCAN_UNK1, 1755 TP_ACPI_HOTKEYSCAN_UNK2, 1756 TP_ACPI_HOTKEYSCAN_UNK3, 1757 TP_ACPI_HOTKEYSCAN_UNK4, 1758 TP_ACPI_HOTKEYSCAN_UNK5, 1759 TP_ACPI_HOTKEYSCAN_UNK6, 1760 TP_ACPI_HOTKEYSCAN_UNK7, 1761 TP_ACPI_HOTKEYSCAN_UNK8, 1762 1763 /* Adaptive keyboard keycodes */ 1764 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1765 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1766 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1767 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1768 TP_ACPI_HOTKEYSCAN_CLOUD, 1769 TP_ACPI_HOTKEYSCAN_UNK9, 1770 TP_ACPI_HOTKEYSCAN_VOICE, 1771 TP_ACPI_HOTKEYSCAN_UNK10, 1772 TP_ACPI_HOTKEYSCAN_GESTURES, 1773 TP_ACPI_HOTKEYSCAN_UNK11, 1774 TP_ACPI_HOTKEYSCAN_UNK12, 1775 TP_ACPI_HOTKEYSCAN_UNK13, 1776 TP_ACPI_HOTKEYSCAN_CONFIG, 1777 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1778 TP_ACPI_HOTKEYSCAN_RELOAD, 1779 TP_ACPI_HOTKEYSCAN_BACK, 1780 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1781 TP_ACPI_HOTKEYSCAN_MIC_UP, 1782 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1783 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1784 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1785 1786 /* Lenovo extended keymap, starting at 0x1300 */ 1787 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1788 /* first new observed key (star, favorites) is 0x1311 */ 1789 TP_ACPI_HOTKEYSCAN_STAR = 69, 1790 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1791 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1792 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1793 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1794 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1795 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1796 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1797 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1798 1799 /* Hotkey keymap size */ 1800 TPACPI_HOTKEY_MAP_LEN 1801 }; 1802 1803 enum { /* Keys/events available through NVRAM polling */ 1804 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1805 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1806 }; 1807 1808 enum { /* Positions of some of the keys in hotkey masks */ 1809 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1810 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1811 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1812 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1813 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1814 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1815 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1816 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1817 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1818 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1819 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1820 }; 1821 1822 enum { /* NVRAM to ACPI HKEY group map */ 1823 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1824 TP_ACPI_HKEY_ZOOM_MASK | 1825 TP_ACPI_HKEY_DISPSWTCH_MASK | 1826 TP_ACPI_HKEY_HIBERNATE_MASK, 1827 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1828 TP_ACPI_HKEY_BRGHTDWN_MASK, 1829 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1830 TP_ACPI_HKEY_VOLDWN_MASK | 1831 TP_ACPI_HKEY_MUTE_MASK, 1832 }; 1833 1834 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1835 struct tp_nvram_state { 1836 u16 thinkpad_toggle:1; 1837 u16 zoom_toggle:1; 1838 u16 display_toggle:1; 1839 u16 thinklight_toggle:1; 1840 u16 hibernate_toggle:1; 1841 u16 displayexp_toggle:1; 1842 u16 display_state:1; 1843 u16 brightness_toggle:1; 1844 u16 volume_toggle:1; 1845 u16 mute:1; 1846 1847 u8 brightness_level; 1848 u8 volume_level; 1849 }; 1850 1851 /* kthread for the hotkey poller */ 1852 static struct task_struct *tpacpi_hotkey_task; 1853 1854 /* 1855 * Acquire mutex to write poller control variables as an 1856 * atomic block. 1857 * 1858 * Increment hotkey_config_change when changing them if you 1859 * want the kthread to forget old state. 1860 * 1861 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1862 */ 1863 static struct mutex hotkey_thread_data_mutex; 1864 static unsigned int hotkey_config_change; 1865 1866 /* 1867 * hotkey poller control variables 1868 * 1869 * Must be atomic or readers will also need to acquire mutex 1870 * 1871 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1872 * should be used only when the changes need to be taken as 1873 * a block, OR when one needs to force the kthread to forget 1874 * old state. 1875 */ 1876 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 1877 static unsigned int hotkey_poll_freq = 10; /* Hz */ 1878 1879 #define HOTKEY_CONFIG_CRITICAL_START \ 1880 do { \ 1881 mutex_lock(&hotkey_thread_data_mutex); \ 1882 hotkey_config_change++; \ 1883 } while (0); 1884 #define HOTKEY_CONFIG_CRITICAL_END \ 1885 mutex_unlock(&hotkey_thread_data_mutex); 1886 1887 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1888 1889 #define hotkey_source_mask 0U 1890 #define HOTKEY_CONFIG_CRITICAL_START 1891 #define HOTKEY_CONFIG_CRITICAL_END 1892 1893 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1894 1895 static struct mutex hotkey_mutex; 1896 1897 static enum { /* Reasons for waking up */ 1898 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 1899 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 1900 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 1901 } hotkey_wakeup_reason; 1902 1903 static int hotkey_autosleep_ack; 1904 1905 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 1906 static u32 hotkey_all_mask; /* all events supported in fw */ 1907 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 1908 static u32 hotkey_reserved_mask; /* events better left disabled */ 1909 static u32 hotkey_driver_mask; /* events needed by the driver */ 1910 static u32 hotkey_user_mask; /* events visible to userspace */ 1911 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 1912 1913 static u16 *hotkey_keycode_map; 1914 1915 static void tpacpi_driver_event(const unsigned int hkey_event); 1916 static void hotkey_driver_event(const unsigned int scancode); 1917 static void hotkey_poll_setup(const bool may_warn); 1918 1919 /* HKEY.MHKG() return bits */ 1920 #define TP_HOTKEY_TABLET_MASK (1 << 3) 1921 enum { 1922 TP_ACPI_MULTI_MODE_INVALID = 0, 1923 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 1924 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 1925 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 1926 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 1927 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 1928 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 1929 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 1930 }; 1931 1932 enum { 1933 /* The following modes are considered tablet mode for the purpose of 1934 * reporting the status to userspace. i.e. in all these modes it makes 1935 * sense to disable the laptop input devices such as touchpad and 1936 * keyboard. 1937 */ 1938 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 1939 TP_ACPI_MULTI_MODE_STAND | 1940 TP_ACPI_MULTI_MODE_TENT | 1941 TP_ACPI_MULTI_MODE_STAND_TENT, 1942 }; 1943 1944 static int hotkey_get_wlsw(void) 1945 { 1946 int status; 1947 1948 if (!tp_features.hotkey_wlsw) 1949 return -ENODEV; 1950 1951 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1952 if (dbg_wlswemul) 1953 return (tpacpi_wlsw_emulstate) ? 1954 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1955 #endif 1956 1957 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 1958 return -EIO; 1959 1960 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1961 } 1962 1963 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 1964 { 1965 int type = (s >> 16) & 0xffff; 1966 int value = s & 0xffff; 1967 int mode = TP_ACPI_MULTI_MODE_INVALID; 1968 int valid_modes = 0; 1969 1970 if (has_tablet_mode) 1971 *has_tablet_mode = 0; 1972 1973 switch (type) { 1974 case 1: 1975 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1976 TP_ACPI_MULTI_MODE_TABLET | 1977 TP_ACPI_MULTI_MODE_STAND_TENT; 1978 break; 1979 case 2: 1980 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1981 TP_ACPI_MULTI_MODE_FLAT | 1982 TP_ACPI_MULTI_MODE_TABLET | 1983 TP_ACPI_MULTI_MODE_STAND | 1984 TP_ACPI_MULTI_MODE_TENT; 1985 break; 1986 case 3: 1987 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1988 TP_ACPI_MULTI_MODE_FLAT; 1989 break; 1990 case 4: 1991 case 5: 1992 /* In mode 4, FLAT is not specified as a valid mode. However, 1993 * it can be seen at least on the X1 Yoga 2nd Generation. 1994 */ 1995 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1996 TP_ACPI_MULTI_MODE_FLAT | 1997 TP_ACPI_MULTI_MODE_TABLET | 1998 TP_ACPI_MULTI_MODE_STAND | 1999 TP_ACPI_MULTI_MODE_TENT; 2000 break; 2001 default: 2002 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2003 type, value, TPACPI_MAIL); 2004 return 0; 2005 } 2006 2007 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2008 *has_tablet_mode = 1; 2009 2010 switch (value) { 2011 case 1: 2012 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2013 break; 2014 case 2: 2015 mode = TP_ACPI_MULTI_MODE_FLAT; 2016 break; 2017 case 3: 2018 mode = TP_ACPI_MULTI_MODE_TABLET; 2019 break; 2020 case 4: 2021 if (type == 1) 2022 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2023 else 2024 mode = TP_ACPI_MULTI_MODE_STAND; 2025 break; 2026 case 5: 2027 mode = TP_ACPI_MULTI_MODE_TENT; 2028 break; 2029 default: 2030 if (type == 5 && value == 0xffff) { 2031 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2032 return 0; 2033 } 2034 } 2035 2036 if (!(mode & valid_modes)) { 2037 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2038 value, type, TPACPI_MAIL); 2039 return 0; 2040 } 2041 2042 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2043 } 2044 2045 static int hotkey_get_tablet_mode(int *status) 2046 { 2047 int s; 2048 2049 switch (tp_features.hotkey_tablet) { 2050 case TP_HOTKEY_TABLET_USES_MHKG: 2051 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2052 return -EIO; 2053 2054 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2055 break; 2056 case TP_HOTKEY_TABLET_USES_GMMS: 2057 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2058 return -EIO; 2059 2060 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2061 break; 2062 default: 2063 break; 2064 } 2065 2066 return 0; 2067 } 2068 2069 /* 2070 * Reads current event mask from firmware, and updates 2071 * hotkey_acpi_mask accordingly. Also resets any bits 2072 * from hotkey_user_mask that are unavailable to be 2073 * delivered (shadow requirement of the userspace ABI). 2074 * 2075 * Call with hotkey_mutex held 2076 */ 2077 static int hotkey_mask_get(void) 2078 { 2079 if (tp_features.hotkey_mask) { 2080 u32 m = 0; 2081 2082 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2083 return -EIO; 2084 2085 hotkey_acpi_mask = m; 2086 } else { 2087 /* no mask support doesn't mean no event support... */ 2088 hotkey_acpi_mask = hotkey_all_mask; 2089 } 2090 2091 /* sync userspace-visible mask */ 2092 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2093 2094 return 0; 2095 } 2096 2097 static void hotkey_mask_warn_incomplete_mask(void) 2098 { 2099 /* log only what the user can fix... */ 2100 const u32 wantedmask = hotkey_driver_mask & 2101 ~(hotkey_acpi_mask | hotkey_source_mask) & 2102 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2103 2104 if (wantedmask) 2105 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2106 } 2107 2108 /* 2109 * Set the firmware mask when supported 2110 * 2111 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2112 * 2113 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2114 * 2115 * Call with hotkey_mutex held 2116 */ 2117 static int hotkey_mask_set(u32 mask) 2118 { 2119 int i; 2120 int rc = 0; 2121 2122 const u32 fwmask = mask & ~hotkey_source_mask; 2123 2124 if (tp_features.hotkey_mask) { 2125 for (i = 0; i < 32; i++) { 2126 if (!acpi_evalf(hkey_handle, 2127 NULL, "MHKM", "vdd", i + 1, 2128 !!(mask & (1 << i)))) { 2129 rc = -EIO; 2130 break; 2131 } 2132 } 2133 } 2134 2135 /* 2136 * We *must* make an inconditional call to hotkey_mask_get to 2137 * refresh hotkey_acpi_mask and update hotkey_user_mask 2138 * 2139 * Take the opportunity to also log when we cannot _enable_ 2140 * a given event. 2141 */ 2142 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2143 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2144 fwmask, hotkey_acpi_mask); 2145 } 2146 2147 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2148 hotkey_mask_warn_incomplete_mask(); 2149 2150 return rc; 2151 } 2152 2153 /* 2154 * Sets hotkey_user_mask and tries to set the firmware mask 2155 * 2156 * Call with hotkey_mutex held 2157 */ 2158 static int hotkey_user_mask_set(const u32 mask) 2159 { 2160 int rc; 2161 2162 /* Give people a chance to notice they are doing something that 2163 * is bound to go boom on their users sooner or later */ 2164 if (!tp_warned.hotkey_mask_ff && 2165 (mask == 0xffff || mask == 0xffffff || 2166 mask == 0xffffffff)) { 2167 tp_warned.hotkey_mask_ff = 1; 2168 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2169 mask); 2170 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2171 } 2172 2173 /* Try to enable what the user asked for, plus whatever we need. 2174 * this syncs everything but won't enable bits in hotkey_user_mask */ 2175 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2176 2177 /* Enable the available bits in hotkey_user_mask */ 2178 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2179 2180 return rc; 2181 } 2182 2183 /* 2184 * Sets the driver hotkey mask. 2185 * 2186 * Can be called even if the hotkey subdriver is inactive 2187 */ 2188 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2189 { 2190 int rc; 2191 2192 /* Do the right thing if hotkey_init has not been called yet */ 2193 if (!tp_features.hotkey) { 2194 hotkey_driver_mask = mask; 2195 return 0; 2196 } 2197 2198 mutex_lock(&hotkey_mutex); 2199 2200 HOTKEY_CONFIG_CRITICAL_START 2201 hotkey_driver_mask = mask; 2202 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2203 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2204 #endif 2205 HOTKEY_CONFIG_CRITICAL_END 2206 2207 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2208 ~hotkey_source_mask); 2209 hotkey_poll_setup(true); 2210 2211 mutex_unlock(&hotkey_mutex); 2212 2213 return rc; 2214 } 2215 2216 static int hotkey_status_get(int *status) 2217 { 2218 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2219 return -EIO; 2220 2221 return 0; 2222 } 2223 2224 static int hotkey_status_set(bool enable) 2225 { 2226 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2227 return -EIO; 2228 2229 return 0; 2230 } 2231 2232 static void tpacpi_input_send_tabletsw(void) 2233 { 2234 int state; 2235 2236 if (tp_features.hotkey_tablet && 2237 !hotkey_get_tablet_mode(&state)) { 2238 mutex_lock(&tpacpi_inputdev_send_mutex); 2239 2240 input_report_switch(tpacpi_inputdev, 2241 SW_TABLET_MODE, !!state); 2242 input_sync(tpacpi_inputdev); 2243 2244 mutex_unlock(&tpacpi_inputdev_send_mutex); 2245 } 2246 } 2247 2248 /* Do NOT call without validating scancode first */ 2249 static void tpacpi_input_send_key(const unsigned int scancode) 2250 { 2251 const unsigned int keycode = hotkey_keycode_map[scancode]; 2252 2253 if (keycode != KEY_RESERVED) { 2254 mutex_lock(&tpacpi_inputdev_send_mutex); 2255 2256 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2257 input_report_key(tpacpi_inputdev, keycode, 1); 2258 input_sync(tpacpi_inputdev); 2259 2260 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2261 input_report_key(tpacpi_inputdev, keycode, 0); 2262 input_sync(tpacpi_inputdev); 2263 2264 mutex_unlock(&tpacpi_inputdev_send_mutex); 2265 } 2266 } 2267 2268 /* Do NOT call without validating scancode first */ 2269 static void tpacpi_input_send_key_masked(const unsigned int scancode) 2270 { 2271 hotkey_driver_event(scancode); 2272 if (hotkey_user_mask & (1 << scancode)) 2273 tpacpi_input_send_key(scancode); 2274 } 2275 2276 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2277 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2278 2279 /* Do NOT call without validating scancode first */ 2280 static void tpacpi_hotkey_send_key(unsigned int scancode) 2281 { 2282 tpacpi_input_send_key_masked(scancode); 2283 } 2284 2285 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2286 { 2287 u8 d; 2288 2289 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2290 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2291 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2292 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2293 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2294 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2295 } 2296 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2297 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2298 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2299 } 2300 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2301 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2302 n->displayexp_toggle = 2303 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2304 } 2305 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2306 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2307 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2308 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2309 n->brightness_toggle = 2310 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2311 } 2312 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2313 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2314 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2315 >> TP_NVRAM_POS_LEVEL_VOLUME; 2316 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2317 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2318 } 2319 } 2320 2321 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2322 do { \ 2323 if ((event_mask & (1 << __scancode)) && \ 2324 oldn->__member != newn->__member) \ 2325 tpacpi_hotkey_send_key(__scancode); \ 2326 } while (0) 2327 2328 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2329 do { \ 2330 if (event_mask & (1 << __scancode)) \ 2331 tpacpi_hotkey_send_key(__scancode); \ 2332 } while (0) 2333 2334 static void issue_volchange(const unsigned int oldvol, 2335 const unsigned int newvol, 2336 const u32 event_mask) 2337 { 2338 unsigned int i = oldvol; 2339 2340 while (i > newvol) { 2341 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2342 i--; 2343 } 2344 while (i < newvol) { 2345 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2346 i++; 2347 } 2348 } 2349 2350 static void issue_brightnesschange(const unsigned int oldbrt, 2351 const unsigned int newbrt, 2352 const u32 event_mask) 2353 { 2354 unsigned int i = oldbrt; 2355 2356 while (i > newbrt) { 2357 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2358 i--; 2359 } 2360 while (i < newbrt) { 2361 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2362 i++; 2363 } 2364 } 2365 2366 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2367 struct tp_nvram_state *newn, 2368 const u32 event_mask) 2369 { 2370 2371 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2372 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2373 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2374 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2375 2376 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2377 2378 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2379 2380 /* 2381 * Handle volume 2382 * 2383 * This code is supposed to duplicate the IBM firmware behaviour: 2384 * - Pressing MUTE issues mute hotkey message, even when already mute 2385 * - Pressing Volume up/down issues volume up/down hotkey messages, 2386 * even when already at maximum or minimum volume 2387 * - The act of unmuting issues volume up/down notification, 2388 * depending which key was used to unmute 2389 * 2390 * We are constrained to what the NVRAM can tell us, which is not much 2391 * and certainly not enough if more than one volume hotkey was pressed 2392 * since the last poll cycle. 2393 * 2394 * Just to make our life interesting, some newer Lenovo ThinkPads have 2395 * bugs in the BIOS and may fail to update volume_toggle properly. 2396 */ 2397 if (newn->mute) { 2398 /* muted */ 2399 if (!oldn->mute || 2400 oldn->volume_toggle != newn->volume_toggle || 2401 oldn->volume_level != newn->volume_level) { 2402 /* recently muted, or repeated mute keypress, or 2403 * multiple presses ending in mute */ 2404 issue_volchange(oldn->volume_level, newn->volume_level, 2405 event_mask); 2406 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2407 } 2408 } else { 2409 /* unmute */ 2410 if (oldn->mute) { 2411 /* recently unmuted, issue 'unmute' keypress */ 2412 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2413 } 2414 if (oldn->volume_level != newn->volume_level) { 2415 issue_volchange(oldn->volume_level, newn->volume_level, 2416 event_mask); 2417 } else if (oldn->volume_toggle != newn->volume_toggle) { 2418 /* repeated vol up/down keypress at end of scale ? */ 2419 if (newn->volume_level == 0) 2420 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2421 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2422 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2423 } 2424 } 2425 2426 /* handle brightness */ 2427 if (oldn->brightness_level != newn->brightness_level) { 2428 issue_brightnesschange(oldn->brightness_level, 2429 newn->brightness_level, event_mask); 2430 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2431 /* repeated key presses that didn't change state */ 2432 if (newn->brightness_level == 0) 2433 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2434 else if (newn->brightness_level >= bright_maxlvl 2435 && !tp_features.bright_unkfw) 2436 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2437 } 2438 2439 #undef TPACPI_COMPARE_KEY 2440 #undef TPACPI_MAY_SEND_KEY 2441 } 2442 2443 /* 2444 * Polling driver 2445 * 2446 * We track all events in hotkey_source_mask all the time, since 2447 * most of them are edge-based. We only issue those requested by 2448 * hotkey_user_mask or hotkey_driver_mask, though. 2449 */ 2450 static int hotkey_kthread(void *data) 2451 { 2452 struct tp_nvram_state s[2] = { 0 }; 2453 u32 poll_mask, event_mask; 2454 unsigned int si, so; 2455 unsigned long t; 2456 unsigned int change_detector; 2457 unsigned int poll_freq; 2458 bool was_frozen; 2459 2460 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2461 goto exit; 2462 2463 set_freezable(); 2464 2465 so = 0; 2466 si = 1; 2467 t = 0; 2468 2469 /* Initial state for compares */ 2470 mutex_lock(&hotkey_thread_data_mutex); 2471 change_detector = hotkey_config_change; 2472 poll_mask = hotkey_source_mask; 2473 event_mask = hotkey_source_mask & 2474 (hotkey_driver_mask | hotkey_user_mask); 2475 poll_freq = hotkey_poll_freq; 2476 mutex_unlock(&hotkey_thread_data_mutex); 2477 hotkey_read_nvram(&s[so], poll_mask); 2478 2479 while (!kthread_should_stop()) { 2480 if (t == 0) { 2481 if (likely(poll_freq)) 2482 t = 1000/poll_freq; 2483 else 2484 t = 100; /* should never happen... */ 2485 } 2486 t = msleep_interruptible(t); 2487 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2488 break; 2489 2490 if (t > 0 && !was_frozen) 2491 continue; 2492 2493 mutex_lock(&hotkey_thread_data_mutex); 2494 if (was_frozen || hotkey_config_change != change_detector) { 2495 /* forget old state on thaw or config change */ 2496 si = so; 2497 t = 0; 2498 change_detector = hotkey_config_change; 2499 } 2500 poll_mask = hotkey_source_mask; 2501 event_mask = hotkey_source_mask & 2502 (hotkey_driver_mask | hotkey_user_mask); 2503 poll_freq = hotkey_poll_freq; 2504 mutex_unlock(&hotkey_thread_data_mutex); 2505 2506 if (likely(poll_mask)) { 2507 hotkey_read_nvram(&s[si], poll_mask); 2508 if (likely(si != so)) { 2509 hotkey_compare_and_issue_event(&s[so], &s[si], 2510 event_mask); 2511 } 2512 } 2513 2514 so = si; 2515 si ^= 1; 2516 } 2517 2518 exit: 2519 return 0; 2520 } 2521 2522 /* call with hotkey_mutex held */ 2523 static void hotkey_poll_stop_sync(void) 2524 { 2525 if (tpacpi_hotkey_task) { 2526 kthread_stop(tpacpi_hotkey_task); 2527 tpacpi_hotkey_task = NULL; 2528 } 2529 } 2530 2531 /* call with hotkey_mutex held */ 2532 static void hotkey_poll_setup(const bool may_warn) 2533 { 2534 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2535 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2536 2537 if (hotkey_poll_freq > 0 && 2538 (poll_driver_mask || 2539 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2540 if (!tpacpi_hotkey_task) { 2541 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2542 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2543 if (IS_ERR(tpacpi_hotkey_task)) { 2544 tpacpi_hotkey_task = NULL; 2545 pr_err("could not create kernel thread for hotkey polling\n"); 2546 } 2547 } 2548 } else { 2549 hotkey_poll_stop_sync(); 2550 if (may_warn && (poll_driver_mask || poll_user_mask) && 2551 hotkey_poll_freq == 0) { 2552 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2553 poll_user_mask, poll_driver_mask); 2554 } 2555 } 2556 } 2557 2558 static void hotkey_poll_setup_safe(const bool may_warn) 2559 { 2560 mutex_lock(&hotkey_mutex); 2561 hotkey_poll_setup(may_warn); 2562 mutex_unlock(&hotkey_mutex); 2563 } 2564 2565 /* call with hotkey_mutex held */ 2566 static void hotkey_poll_set_freq(unsigned int freq) 2567 { 2568 if (!freq) 2569 hotkey_poll_stop_sync(); 2570 2571 hotkey_poll_freq = freq; 2572 } 2573 2574 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2575 2576 static void hotkey_poll_setup(const bool __unused) 2577 { 2578 } 2579 2580 static void hotkey_poll_setup_safe(const bool __unused) 2581 { 2582 } 2583 2584 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2585 2586 static int hotkey_inputdev_open(struct input_dev *dev) 2587 { 2588 switch (tpacpi_lifecycle) { 2589 case TPACPI_LIFE_INIT: 2590 case TPACPI_LIFE_RUNNING: 2591 hotkey_poll_setup_safe(false); 2592 return 0; 2593 case TPACPI_LIFE_EXITING: 2594 return -EBUSY; 2595 } 2596 2597 /* Should only happen if tpacpi_lifecycle is corrupt */ 2598 BUG(); 2599 return -EBUSY; 2600 } 2601 2602 static void hotkey_inputdev_close(struct input_dev *dev) 2603 { 2604 /* disable hotkey polling when possible */ 2605 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2606 !(hotkey_source_mask & hotkey_driver_mask)) 2607 hotkey_poll_setup_safe(false); 2608 } 2609 2610 /* sysfs hotkey enable ------------------------------------------------- */ 2611 static ssize_t hotkey_enable_show(struct device *dev, 2612 struct device_attribute *attr, 2613 char *buf) 2614 { 2615 int res, status; 2616 2617 printk_deprecated_attribute("hotkey_enable", 2618 "Hotkey reporting is always enabled"); 2619 2620 res = hotkey_status_get(&status); 2621 if (res) 2622 return res; 2623 2624 return sysfs_emit(buf, "%d\n", status); 2625 } 2626 2627 static ssize_t hotkey_enable_store(struct device *dev, 2628 struct device_attribute *attr, 2629 const char *buf, size_t count) 2630 { 2631 unsigned long t; 2632 2633 printk_deprecated_attribute("hotkey_enable", 2634 "Hotkeys can be disabled through hotkey_mask"); 2635 2636 if (parse_strtoul(buf, 1, &t)) 2637 return -EINVAL; 2638 2639 if (t == 0) 2640 return -EPERM; 2641 2642 return count; 2643 } 2644 2645 static DEVICE_ATTR_RW(hotkey_enable); 2646 2647 /* sysfs hotkey mask --------------------------------------------------- */ 2648 static ssize_t hotkey_mask_show(struct device *dev, 2649 struct device_attribute *attr, 2650 char *buf) 2651 { 2652 return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask); 2653 } 2654 2655 static ssize_t hotkey_mask_store(struct device *dev, 2656 struct device_attribute *attr, 2657 const char *buf, size_t count) 2658 { 2659 unsigned long t; 2660 int res; 2661 2662 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2663 return -EINVAL; 2664 2665 if (mutex_lock_killable(&hotkey_mutex)) 2666 return -ERESTARTSYS; 2667 2668 res = hotkey_user_mask_set(t); 2669 2670 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2671 hotkey_poll_setup(true); 2672 #endif 2673 2674 mutex_unlock(&hotkey_mutex); 2675 2676 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2677 2678 return (res) ? res : count; 2679 } 2680 2681 static DEVICE_ATTR_RW(hotkey_mask); 2682 2683 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2684 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2685 struct device_attribute *attr, 2686 char *buf) 2687 { 2688 return sprintf(buf, "0\n"); 2689 } 2690 2691 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2692 2693 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2694 static ssize_t hotkey_bios_mask_show(struct device *dev, 2695 struct device_attribute *attr, 2696 char *buf) 2697 { 2698 printk_deprecated_attribute("hotkey_bios_mask", 2699 "This attribute is useless."); 2700 return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask); 2701 } 2702 2703 static DEVICE_ATTR_RO(hotkey_bios_mask); 2704 2705 /* sysfs hotkey all_mask ----------------------------------------------- */ 2706 static ssize_t hotkey_all_mask_show(struct device *dev, 2707 struct device_attribute *attr, 2708 char *buf) 2709 { 2710 return sysfs_emit(buf, "0x%08x\n", 2711 hotkey_all_mask | hotkey_source_mask); 2712 } 2713 2714 static DEVICE_ATTR_RO(hotkey_all_mask); 2715 2716 /* sysfs hotkey all_mask ----------------------------------------------- */ 2717 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2718 struct device_attribute *attr, 2719 char *buf) 2720 { 2721 return sysfs_emit(buf, "0x%08x\n", 2722 hotkey_adaptive_all_mask | hotkey_source_mask); 2723 } 2724 2725 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2726 2727 /* sysfs hotkey recommended_mask --------------------------------------- */ 2728 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2729 struct device_attribute *attr, 2730 char *buf) 2731 { 2732 return sysfs_emit(buf, "0x%08x\n", 2733 (hotkey_all_mask | hotkey_source_mask) 2734 & ~hotkey_reserved_mask); 2735 } 2736 2737 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2738 2739 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2740 2741 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2742 static ssize_t hotkey_source_mask_show(struct device *dev, 2743 struct device_attribute *attr, 2744 char *buf) 2745 { 2746 return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask); 2747 } 2748 2749 static ssize_t hotkey_source_mask_store(struct device *dev, 2750 struct device_attribute *attr, 2751 const char *buf, size_t count) 2752 { 2753 unsigned long t; 2754 u32 r_ev; 2755 int rc; 2756 2757 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2758 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2759 return -EINVAL; 2760 2761 if (mutex_lock_killable(&hotkey_mutex)) 2762 return -ERESTARTSYS; 2763 2764 HOTKEY_CONFIG_CRITICAL_START 2765 hotkey_source_mask = t; 2766 HOTKEY_CONFIG_CRITICAL_END 2767 2768 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2769 ~hotkey_source_mask); 2770 hotkey_poll_setup(true); 2771 2772 /* check if events needed by the driver got disabled */ 2773 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2774 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2775 2776 mutex_unlock(&hotkey_mutex); 2777 2778 if (rc < 0) 2779 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2780 2781 if (r_ev) 2782 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2783 r_ev); 2784 2785 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2786 2787 return (rc < 0) ? rc : count; 2788 } 2789 2790 static DEVICE_ATTR_RW(hotkey_source_mask); 2791 2792 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2793 static ssize_t hotkey_poll_freq_show(struct device *dev, 2794 struct device_attribute *attr, 2795 char *buf) 2796 { 2797 return sysfs_emit(buf, "%d\n", hotkey_poll_freq); 2798 } 2799 2800 static ssize_t hotkey_poll_freq_store(struct device *dev, 2801 struct device_attribute *attr, 2802 const char *buf, size_t count) 2803 { 2804 unsigned long t; 2805 2806 if (parse_strtoul(buf, 25, &t)) 2807 return -EINVAL; 2808 2809 if (mutex_lock_killable(&hotkey_mutex)) 2810 return -ERESTARTSYS; 2811 2812 hotkey_poll_set_freq(t); 2813 hotkey_poll_setup(true); 2814 2815 mutex_unlock(&hotkey_mutex); 2816 2817 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2818 2819 return count; 2820 } 2821 2822 static DEVICE_ATTR_RW(hotkey_poll_freq); 2823 2824 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2825 2826 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2827 static ssize_t hotkey_radio_sw_show(struct device *dev, 2828 struct device_attribute *attr, 2829 char *buf) 2830 { 2831 int res; 2832 res = hotkey_get_wlsw(); 2833 if (res < 0) 2834 return res; 2835 2836 /* Opportunistic update */ 2837 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2838 2839 return sysfs_emit(buf, "%d\n", 2840 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2841 } 2842 2843 static DEVICE_ATTR_RO(hotkey_radio_sw); 2844 2845 static void hotkey_radio_sw_notify_change(void) 2846 { 2847 if (tp_features.hotkey_wlsw) 2848 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2849 "hotkey_radio_sw"); 2850 } 2851 2852 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2853 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2854 struct device_attribute *attr, 2855 char *buf) 2856 { 2857 int res, s; 2858 res = hotkey_get_tablet_mode(&s); 2859 if (res < 0) 2860 return res; 2861 2862 return sysfs_emit(buf, "%d\n", !!s); 2863 } 2864 2865 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2866 2867 static void hotkey_tablet_mode_notify_change(void) 2868 { 2869 if (tp_features.hotkey_tablet) 2870 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2871 "hotkey_tablet_mode"); 2872 } 2873 2874 /* sysfs wakeup reason (pollable) -------------------------------------- */ 2875 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2876 struct device_attribute *attr, 2877 char *buf) 2878 { 2879 return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason); 2880 } 2881 2882 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2883 2884 static void hotkey_wakeup_reason_notify_change(void) 2885 { 2886 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2887 "wakeup_reason"); 2888 } 2889 2890 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 2891 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 2892 struct device_attribute *attr, 2893 char *buf) 2894 { 2895 return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack); 2896 } 2897 2898 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 2899 hotkey_wakeup_hotunplug_complete_show, NULL); 2900 2901 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 2902 { 2903 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2904 "wakeup_hotunplug_complete"); 2905 } 2906 2907 /* sysfs adaptive kbd mode --------------------------------------------- */ 2908 2909 static int adaptive_keyboard_get_mode(void); 2910 static int adaptive_keyboard_set_mode(int new_mode); 2911 2912 enum ADAPTIVE_KEY_MODE { 2913 HOME_MODE, 2914 WEB_BROWSER_MODE, 2915 WEB_CONFERENCE_MODE, 2916 FUNCTION_MODE, 2917 LAYFLAT_MODE 2918 }; 2919 2920 static ssize_t adaptive_kbd_mode_show(struct device *dev, 2921 struct device_attribute *attr, 2922 char *buf) 2923 { 2924 int current_mode; 2925 2926 current_mode = adaptive_keyboard_get_mode(); 2927 if (current_mode < 0) 2928 return current_mode; 2929 2930 return sysfs_emit(buf, "%d\n", current_mode); 2931 } 2932 2933 static ssize_t adaptive_kbd_mode_store(struct device *dev, 2934 struct device_attribute *attr, 2935 const char *buf, size_t count) 2936 { 2937 unsigned long t; 2938 int res; 2939 2940 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 2941 return -EINVAL; 2942 2943 res = adaptive_keyboard_set_mode(t); 2944 return (res < 0) ? res : count; 2945 } 2946 2947 static DEVICE_ATTR_RW(adaptive_kbd_mode); 2948 2949 static struct attribute *adaptive_kbd_attributes[] = { 2950 &dev_attr_adaptive_kbd_mode.attr, 2951 NULL 2952 }; 2953 2954 static umode_t hadaptive_kbd_attr_is_visible(struct kobject *kobj, 2955 struct attribute *attr, int n) 2956 { 2957 return tp_features.has_adaptive_kbd ? attr->mode : 0; 2958 } 2959 2960 static const struct attribute_group adaptive_kbd_attr_group = { 2961 .is_visible = hadaptive_kbd_attr_is_visible, 2962 .attrs = adaptive_kbd_attributes, 2963 }; 2964 2965 /* --------------------------------------------------------------------- */ 2966 2967 static struct attribute *hotkey_attributes[] = { 2968 &dev_attr_hotkey_enable.attr, 2969 &dev_attr_hotkey_bios_enabled.attr, 2970 &dev_attr_hotkey_bios_mask.attr, 2971 &dev_attr_wakeup_reason.attr, 2972 &dev_attr_wakeup_hotunplug_complete.attr, 2973 &dev_attr_hotkey_mask.attr, 2974 &dev_attr_hotkey_all_mask.attr, 2975 &dev_attr_hotkey_adaptive_all_mask.attr, 2976 &dev_attr_hotkey_recommended_mask.attr, 2977 &dev_attr_hotkey_tablet_mode.attr, 2978 &dev_attr_hotkey_radio_sw.attr, 2979 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2980 &dev_attr_hotkey_source_mask.attr, 2981 &dev_attr_hotkey_poll_freq.attr, 2982 #endif 2983 NULL 2984 }; 2985 2986 static umode_t hotkey_attr_is_visible(struct kobject *kobj, 2987 struct attribute *attr, int n) 2988 { 2989 if (attr == &dev_attr_hotkey_tablet_mode.attr) { 2990 if (!tp_features.hotkey_tablet) 2991 return 0; 2992 } else if (attr == &dev_attr_hotkey_radio_sw.attr) { 2993 if (!tp_features.hotkey_wlsw) 2994 return 0; 2995 } 2996 2997 return attr->mode; 2998 } 2999 3000 static const struct attribute_group hotkey_attr_group = { 3001 .is_visible = hotkey_attr_is_visible, 3002 .attrs = hotkey_attributes, 3003 }; 3004 3005 /* 3006 * Sync both the hw and sw blocking state of all switches 3007 */ 3008 static void tpacpi_send_radiosw_update(void) 3009 { 3010 int wlsw; 3011 3012 /* 3013 * We must sync all rfkill controllers *before* issuing any 3014 * rfkill input events, or we will race the rfkill core input 3015 * handler. 3016 * 3017 * tpacpi_inputdev_send_mutex works as a synchronization point 3018 * for the above. 3019 * 3020 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3021 */ 3022 3023 wlsw = hotkey_get_wlsw(); 3024 3025 /* Sync hw blocking state first if it is hw-blocked */ 3026 if (wlsw == TPACPI_RFK_RADIO_OFF) 3027 tpacpi_rfk_update_hwblock_state(true); 3028 3029 /* Sync hw blocking state last if it is hw-unblocked */ 3030 if (wlsw == TPACPI_RFK_RADIO_ON) 3031 tpacpi_rfk_update_hwblock_state(false); 3032 3033 /* Issue rfkill input event for WLSW switch */ 3034 if (!(wlsw < 0)) { 3035 mutex_lock(&tpacpi_inputdev_send_mutex); 3036 3037 input_report_switch(tpacpi_inputdev, 3038 SW_RFKILL_ALL, (wlsw > 0)); 3039 input_sync(tpacpi_inputdev); 3040 3041 mutex_unlock(&tpacpi_inputdev_send_mutex); 3042 } 3043 3044 /* 3045 * this can be unconditional, as we will poll state again 3046 * if userspace uses the notify to read data 3047 */ 3048 hotkey_radio_sw_notify_change(); 3049 } 3050 3051 static void hotkey_exit(void) 3052 { 3053 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3054 mutex_lock(&hotkey_mutex); 3055 hotkey_poll_stop_sync(); 3056 mutex_unlock(&hotkey_mutex); 3057 #endif 3058 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3059 "restoring original HKEY status and mask\n"); 3060 /* yes, there is a bitwise or below, we want the 3061 * functions to be called even if one of them fail */ 3062 if (((tp_features.hotkey_mask && 3063 hotkey_mask_set(hotkey_orig_mask)) | 3064 hotkey_status_set(false)) != 0) 3065 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3066 } 3067 3068 static void __init hotkey_unmap(const unsigned int scancode) 3069 { 3070 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3071 clear_bit(hotkey_keycode_map[scancode], 3072 tpacpi_inputdev->keybit); 3073 hotkey_keycode_map[scancode] = KEY_RESERVED; 3074 } 3075 } 3076 3077 /* 3078 * HKEY quirks: 3079 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3080 */ 3081 3082 #define TPACPI_HK_Q_INIMASK 0x0001 3083 3084 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3085 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3086 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3087 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3088 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3089 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3090 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3091 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3092 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3093 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3094 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3095 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3096 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3097 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3098 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3099 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3100 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3101 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3102 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3103 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3104 }; 3105 3106 typedef u16 tpacpi_keymap_entry_t; 3107 typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3108 3109 static int hotkey_init_tablet_mode(void) 3110 { 3111 int in_tablet_mode = 0, res; 3112 char *type = NULL; 3113 3114 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3115 int has_tablet_mode; 3116 3117 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3118 &has_tablet_mode); 3119 /* 3120 * The Yoga 11e series has 2 accelerometers described by a 3121 * BOSC0200 ACPI node. This setup relies on a Windows service 3122 * which calls special ACPI methods on this node to report 3123 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3124 * does not support this, so skip the hotkey on these models. 3125 */ 3126 if (has_tablet_mode && !dual_accel_detect()) 3127 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3128 type = "GMMS"; 3129 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3130 /* For X41t, X60t, X61t Tablets... */ 3131 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3132 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3133 type = "MHKG"; 3134 } 3135 3136 if (!tp_features.hotkey_tablet) 3137 return 0; 3138 3139 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3140 type, in_tablet_mode ? "tablet" : "laptop"); 3141 3142 return in_tablet_mode; 3143 } 3144 3145 static int __init hotkey_init(struct ibm_init_struct *iibm) 3146 { 3147 /* Requirements for changing the default keymaps: 3148 * 3149 * 1. Many of the keys are mapped to KEY_RESERVED for very 3150 * good reasons. Do not change them unless you have deep 3151 * knowledge on the IBM and Lenovo ThinkPad firmware for 3152 * the various ThinkPad models. The driver behaves 3153 * differently for KEY_RESERVED: such keys have their 3154 * hot key mask *unset* in mask_recommended, and also 3155 * in the initial hot key mask programmed into the 3156 * firmware at driver load time, which means the firm- 3157 * ware may react very differently if you change them to 3158 * something else; 3159 * 3160 * 2. You must be subscribed to the linux-thinkpad and 3161 * ibm-acpi-devel mailing lists, and you should read the 3162 * list archives since 2007 if you want to change the 3163 * keymaps. This requirement exists so that you will 3164 * know the past history of problems with the thinkpad- 3165 * acpi driver keymaps, and also that you will be 3166 * listening to any bug reports; 3167 * 3168 * 3. Do not send thinkpad-acpi specific patches directly to 3169 * for merging, *ever*. Send them to the linux-acpi 3170 * mailinglist for comments. Merging is to be done only 3171 * through acpi-test and the ACPI maintainer. 3172 * 3173 * If the above is too much to ask, don't change the keymap. 3174 * Ask the thinkpad-acpi maintainer to do it, instead. 3175 */ 3176 3177 enum keymap_index { 3178 TPACPI_KEYMAP_IBM_GENERIC = 0, 3179 TPACPI_KEYMAP_LENOVO_GENERIC, 3180 }; 3181 3182 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3183 /* Generic keymap for IBM ThinkPads */ 3184 [TPACPI_KEYMAP_IBM_GENERIC] = { 3185 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3186 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3187 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3188 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3189 3190 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3191 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3192 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3193 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3194 3195 /* brightness: firmware always reacts to them */ 3196 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3197 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3198 3199 /* Thinklight: firmware always react to it */ 3200 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3201 3202 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3203 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3204 3205 /* Volume: firmware always react to it and reprograms 3206 * the built-in *extra* mixer. Never map it to control 3207 * another mixer by default. */ 3208 KEY_RESERVED, /* 0x14: VOLUME UP */ 3209 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3210 KEY_RESERVED, /* 0x16: MUTE */ 3211 3212 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3213 3214 /* (assignments unknown, please report if found) */ 3215 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3216 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3217 3218 /* No assignments, only used for Adaptive keyboards. */ 3219 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3220 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3221 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3222 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3223 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3224 3225 /* No assignment, used for newer Lenovo models */ 3226 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3227 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3228 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3229 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3230 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3231 KEY_UNKNOWN, KEY_UNKNOWN 3232 3233 }, 3234 3235 /* Generic keymap for Lenovo ThinkPads */ 3236 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3237 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3238 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3239 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3240 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3241 3242 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3243 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3244 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3245 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3246 3247 /* These should be enabled --only-- when ACPI video 3248 * is disabled (i.e. in "vendor" mode), and are handled 3249 * in a special way by the init code */ 3250 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3251 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3252 3253 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3254 3255 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3256 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3257 3258 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3259 * react to it and reprograms the built-in *extra* mixer. 3260 * Never map it to control another mixer by default. 3261 * 3262 * T60?, T61, R60?, R61: firmware and EC tries to send 3263 * these over the regular keyboard, so these are no-ops, 3264 * but there are still weird bugs re. MUTE, so do not 3265 * change unless you get test reports from all Lenovo 3266 * models. May cause the BIOS to interfere with the 3267 * HDA mixer. 3268 */ 3269 KEY_RESERVED, /* 0x14: VOLUME UP */ 3270 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3271 KEY_RESERVED, /* 0x16: MUTE */ 3272 3273 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3274 3275 /* (assignments unknown, please report if found) */ 3276 KEY_UNKNOWN, KEY_UNKNOWN, 3277 3278 /* 3279 * The mic mute button only sends 0x1a. It does not 3280 * automatically mute the mic or change the mute light. 3281 */ 3282 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3283 3284 /* (assignments unknown, please report if found) */ 3285 KEY_UNKNOWN, 3286 3287 /* Extra keys in use since the X240 / T440 / T540 */ 3288 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3289 3290 /* 3291 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3292 * The first item in this list is the Mute button which is 3293 * emitted with 0x103 through 3294 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3295 * symbol is held. 3296 * We'll need to offset those by 0x20. 3297 */ 3298 KEY_RESERVED, /* Mute held, 0x103 */ 3299 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3300 KEY_RESERVED, /* Clipping tool */ 3301 KEY_RESERVED, /* Cloud */ 3302 KEY_RESERVED, 3303 KEY_VOICECOMMAND, /* Voice */ 3304 KEY_RESERVED, 3305 KEY_RESERVED, /* Gestures */ 3306 KEY_RESERVED, 3307 KEY_RESERVED, 3308 KEY_RESERVED, 3309 KEY_CONFIG, /* Settings */ 3310 KEY_RESERVED, /* New tab */ 3311 KEY_REFRESH, /* Reload */ 3312 KEY_BACK, /* Back */ 3313 KEY_RESERVED, /* Microphone down */ 3314 KEY_RESERVED, /* Microphone up */ 3315 KEY_RESERVED, /* Microphone cancellation */ 3316 KEY_RESERVED, /* Camera mode */ 3317 KEY_RESERVED, /* Rotate display, 0x116 */ 3318 3319 /* 3320 * These are found in 2017 models (e.g. T470s, X270). 3321 * The lowest known value is 0x311, which according to 3322 * the manual should launch a user defined favorite 3323 * application. 3324 * 3325 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3326 * corresponding to 0x34. 3327 */ 3328 3329 /* (assignments unknown, please report if found) */ 3330 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3331 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3332 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3333 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3334 KEY_UNKNOWN, 3335 3336 KEY_BOOKMARKS, /* Favorite app, 0x311 */ 3337 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */ 3338 KEY_CALC, /* Calculator (above numpad, P52) */ 3339 KEY_BLUETOOTH, /* Bluetooth */ 3340 KEY_KEYBOARD, /* Keyboard, 0x315 */ 3341 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */ 3342 KEY_NOTIFICATION_CENTER, /* Notification Center */ 3343 KEY_PICKUP_PHONE, /* Answer incoming call */ 3344 KEY_HANGUP_PHONE, /* Decline incoming call */ 3345 }, 3346 }; 3347 3348 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3349 /* Generic maps (fallback) */ 3350 { 3351 .vendor = PCI_VENDOR_ID_IBM, 3352 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3353 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3354 }, 3355 { 3356 .vendor = PCI_VENDOR_ID_LENOVO, 3357 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3358 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3359 }, 3360 }; 3361 3362 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3363 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3364 3365 int res, i; 3366 int status; 3367 int hkeyv; 3368 bool radiosw_state = false; 3369 bool tabletsw_state = false; 3370 3371 unsigned long quirks; 3372 unsigned long keymap_id; 3373 3374 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3375 "initializing hotkey subdriver\n"); 3376 3377 BUG_ON(!tpacpi_inputdev); 3378 BUG_ON(tpacpi_inputdev->open != NULL || 3379 tpacpi_inputdev->close != NULL); 3380 3381 TPACPI_ACPIHANDLE_INIT(hkey); 3382 mutex_init(&hotkey_mutex); 3383 3384 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3385 mutex_init(&hotkey_thread_data_mutex); 3386 #endif 3387 3388 /* hotkey not supported on 570 */ 3389 tp_features.hotkey = hkey_handle != NULL; 3390 3391 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3392 "hotkeys are %s\n", 3393 str_supported(tp_features.hotkey)); 3394 3395 if (!tp_features.hotkey) 3396 return -ENODEV; 3397 3398 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3399 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3400 3401 tpacpi_disable_brightness_delay(); 3402 3403 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3404 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3405 for HKEY interface version 0x100 */ 3406 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3407 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3408 "firmware HKEY interface version: 0x%x\n", 3409 hkeyv); 3410 3411 switch (hkeyv >> 8) { 3412 case 1: 3413 /* 3414 * MHKV 0x100 in A31, R40, R40e, 3415 * T4x, X31, and later 3416 */ 3417 3418 /* Paranoia check AND init hotkey_all_mask */ 3419 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3420 "MHKA", "qd")) { 3421 pr_err("missing MHKA handler, please report this to %s\n", 3422 TPACPI_MAIL); 3423 /* Fallback: pre-init for FN+F3,F4,F12 */ 3424 hotkey_all_mask = 0x080cU; 3425 } else { 3426 tp_features.hotkey_mask = 1; 3427 } 3428 break; 3429 3430 case 2: 3431 /* 3432 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3433 */ 3434 3435 /* Paranoia check AND init hotkey_all_mask */ 3436 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3437 "MHKA", "dd", 1)) { 3438 pr_err("missing MHKA handler, please report this to %s\n", 3439 TPACPI_MAIL); 3440 /* Fallback: pre-init for FN+F3,F4,F12 */ 3441 hotkey_all_mask = 0x080cU; 3442 } else { 3443 tp_features.hotkey_mask = 1; 3444 } 3445 3446 /* 3447 * Check if we have an adaptive keyboard, like on the 3448 * Lenovo Carbon X1 2014 (2nd Gen). 3449 */ 3450 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3451 "MHKA", "dd", 2)) { 3452 if (hotkey_adaptive_all_mask != 0) 3453 tp_features.has_adaptive_kbd = true; 3454 } else { 3455 tp_features.has_adaptive_kbd = false; 3456 hotkey_adaptive_all_mask = 0x0U; 3457 } 3458 break; 3459 3460 default: 3461 pr_err("unknown version of the HKEY interface: 0x%x\n", 3462 hkeyv); 3463 pr_err("please report this to %s\n", TPACPI_MAIL); 3464 break; 3465 } 3466 } 3467 3468 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3469 "hotkey masks are %s\n", 3470 str_supported(tp_features.hotkey_mask)); 3471 3472 /* Init hotkey_all_mask if not initialized yet */ 3473 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3474 (quirks & TPACPI_HK_Q_INIMASK)) 3475 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3476 3477 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3478 if (tp_features.hotkey_mask) { 3479 /* hotkey_source_mask *must* be zero for 3480 * the first hotkey_mask_get to return hotkey_orig_mask */ 3481 res = hotkey_mask_get(); 3482 if (res) 3483 return res; 3484 3485 hotkey_orig_mask = hotkey_acpi_mask; 3486 } else { 3487 hotkey_orig_mask = hotkey_all_mask; 3488 hotkey_acpi_mask = hotkey_all_mask; 3489 } 3490 3491 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3492 if (dbg_wlswemul) { 3493 tp_features.hotkey_wlsw = 1; 3494 radiosw_state = !!tpacpi_wlsw_emulstate; 3495 pr_info("radio switch emulation enabled\n"); 3496 } else 3497 #endif 3498 /* Not all thinkpads have a hardware radio switch */ 3499 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3500 tp_features.hotkey_wlsw = 1; 3501 radiosw_state = !!status; 3502 pr_info("radio switch found; radios are %s\n", 3503 enabled(status, 0)); 3504 } 3505 3506 tabletsw_state = hotkey_init_tablet_mode(); 3507 3508 /* Set up key map */ 3509 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3510 ARRAY_SIZE(tpacpi_keymap_qtable)); 3511 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3512 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3513 "using keymap number %lu\n", keymap_id); 3514 3515 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], 3516 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); 3517 if (!hotkey_keycode_map) { 3518 pr_err("failed to allocate memory for key map\n"); 3519 return -ENOMEM; 3520 } 3521 3522 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3523 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3524 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3525 tpacpi_inputdev->keycode = hotkey_keycode_map; 3526 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3527 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3528 input_set_capability(tpacpi_inputdev, EV_KEY, 3529 hotkey_keycode_map[i]); 3530 } else { 3531 if (i < sizeof(hotkey_reserved_mask)*8) 3532 hotkey_reserved_mask |= 1 << i; 3533 } 3534 } 3535 3536 if (tp_features.hotkey_wlsw) { 3537 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3538 input_report_switch(tpacpi_inputdev, 3539 SW_RFKILL_ALL, radiosw_state); 3540 } 3541 if (tp_features.hotkey_tablet) { 3542 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3543 input_report_switch(tpacpi_inputdev, 3544 SW_TABLET_MODE, tabletsw_state); 3545 } 3546 3547 /* Do not issue duplicate brightness change events to 3548 * userspace. tpacpi_detect_brightness_capabilities() must have 3549 * been called before this point */ 3550 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3551 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3552 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3553 3554 /* Disable brightness up/down on Lenovo thinkpads when 3555 * ACPI is handling them, otherwise it is plain impossible 3556 * for userspace to do something even remotely sane */ 3557 hotkey_reserved_mask |= 3558 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3559 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3560 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3561 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3562 } 3563 3564 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3565 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3566 & ~hotkey_all_mask 3567 & ~hotkey_reserved_mask; 3568 3569 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3570 "hotkey source mask 0x%08x, polling freq %u\n", 3571 hotkey_source_mask, hotkey_poll_freq); 3572 #endif 3573 3574 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3575 "enabling firmware HKEY event interface...\n"); 3576 res = hotkey_status_set(true); 3577 if (res) { 3578 hotkey_exit(); 3579 return res; 3580 } 3581 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3582 | hotkey_driver_mask) 3583 & ~hotkey_source_mask); 3584 if (res < 0 && res != -ENXIO) { 3585 hotkey_exit(); 3586 return res; 3587 } 3588 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3589 & ~hotkey_reserved_mask; 3590 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3591 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3592 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3593 3594 tpacpi_inputdev->open = &hotkey_inputdev_open; 3595 tpacpi_inputdev->close = &hotkey_inputdev_close; 3596 3597 hotkey_poll_setup_safe(true); 3598 3599 return 0; 3600 } 3601 3602 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3603 * mode, Web conference mode, Function mode and Lay-flat mode. 3604 * We support Home mode and Function mode currently. 3605 * 3606 * Will consider support rest of modes in future. 3607 * 3608 */ 3609 static const int adaptive_keyboard_modes[] = { 3610 HOME_MODE, 3611 /* WEB_BROWSER_MODE = 2, 3612 WEB_CONFERENCE_MODE = 3, */ 3613 FUNCTION_MODE 3614 }; 3615 3616 #define DFR_CHANGE_ROW 0x101 3617 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3618 #define FIRST_ADAPTIVE_KEY 0x103 3619 3620 /* press Fn key a while second, it will switch to Function Mode. Then 3621 * release Fn key, previous mode be restored. 3622 */ 3623 static bool adaptive_keyboard_mode_is_saved; 3624 static int adaptive_keyboard_prev_mode; 3625 3626 static int adaptive_keyboard_get_mode(void) 3627 { 3628 int mode = 0; 3629 3630 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3631 pr_err("Cannot read adaptive keyboard mode\n"); 3632 return -EIO; 3633 } 3634 3635 return mode; 3636 } 3637 3638 static int adaptive_keyboard_set_mode(int new_mode) 3639 { 3640 if (new_mode < 0 || 3641 new_mode > LAYFLAT_MODE) 3642 return -EINVAL; 3643 3644 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3645 pr_err("Cannot set adaptive keyboard mode\n"); 3646 return -EIO; 3647 } 3648 3649 return 0; 3650 } 3651 3652 static int adaptive_keyboard_get_next_mode(int mode) 3653 { 3654 size_t i; 3655 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3656 3657 for (i = 0; i <= max_mode; i++) { 3658 if (adaptive_keyboard_modes[i] == mode) 3659 break; 3660 } 3661 3662 if (i >= max_mode) 3663 i = 0; 3664 else 3665 i++; 3666 3667 return adaptive_keyboard_modes[i]; 3668 } 3669 3670 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3671 { 3672 int current_mode = 0; 3673 int new_mode = 0; 3674 int keycode; 3675 3676 switch (scancode) { 3677 case DFR_CHANGE_ROW: 3678 if (adaptive_keyboard_mode_is_saved) { 3679 new_mode = adaptive_keyboard_prev_mode; 3680 adaptive_keyboard_mode_is_saved = false; 3681 } else { 3682 current_mode = adaptive_keyboard_get_mode(); 3683 if (current_mode < 0) 3684 return false; 3685 new_mode = adaptive_keyboard_get_next_mode( 3686 current_mode); 3687 } 3688 3689 if (adaptive_keyboard_set_mode(new_mode) < 0) 3690 return false; 3691 3692 return true; 3693 3694 case DFR_SHOW_QUICKVIEW_ROW: 3695 current_mode = adaptive_keyboard_get_mode(); 3696 if (current_mode < 0) 3697 return false; 3698 3699 adaptive_keyboard_prev_mode = current_mode; 3700 adaptive_keyboard_mode_is_saved = true; 3701 3702 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3703 return false; 3704 return true; 3705 3706 default: 3707 if (scancode < FIRST_ADAPTIVE_KEY || 3708 scancode >= FIRST_ADAPTIVE_KEY + 3709 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3710 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3711 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3712 scancode); 3713 return false; 3714 } 3715 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3716 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3717 if (keycode != KEY_RESERVED) { 3718 mutex_lock(&tpacpi_inputdev_send_mutex); 3719 3720 input_report_key(tpacpi_inputdev, keycode, 1); 3721 input_sync(tpacpi_inputdev); 3722 3723 input_report_key(tpacpi_inputdev, keycode, 0); 3724 input_sync(tpacpi_inputdev); 3725 3726 mutex_unlock(&tpacpi_inputdev_send_mutex); 3727 } 3728 return true; 3729 } 3730 } 3731 3732 static bool hotkey_notify_extended_hotkey(const u32 hkey) 3733 { 3734 unsigned int scancode; 3735 3736 switch (hkey) { 3737 case TP_HKEY_EV_PRIVACYGUARD_TOGGLE: 3738 tpacpi_driver_event(hkey); 3739 return true; 3740 } 3741 3742 /* Extended keycodes start at 0x300 and our offset into the map 3743 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3744 * will be positive, but might not be in the correct range. 3745 */ 3746 scancode = (hkey & 0xfff) - (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3747 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3748 scancode < TPACPI_HOTKEY_MAP_LEN) { 3749 tpacpi_input_send_key(scancode); 3750 return true; 3751 } 3752 3753 return false; 3754 } 3755 3756 static bool hotkey_notify_hotkey(const u32 hkey, 3757 bool *send_acpi_ev, 3758 bool *ignore_acpi_ev) 3759 { 3760 /* 0x1000-0x1FFF: key presses */ 3761 unsigned int scancode = hkey & 0xfff; 3762 *send_acpi_ev = true; 3763 *ignore_acpi_ev = false; 3764 3765 /* 3766 * Original events are in the 0x10XX range, the adaptive keyboard 3767 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3768 * models, additional keys are emitted through 0x13XX. 3769 */ 3770 switch ((hkey >> 8) & 0xf) { 3771 case 0: 3772 if (scancode > 0 && 3773 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3774 /* HKEY event 0x1001 is scancode 0x00 */ 3775 scancode--; 3776 if (!(hotkey_source_mask & (1 << scancode))) { 3777 tpacpi_input_send_key_masked(scancode); 3778 *send_acpi_ev = false; 3779 } else { 3780 *ignore_acpi_ev = true; 3781 } 3782 return true; 3783 } 3784 break; 3785 3786 case 1: 3787 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3788 3789 case 3: 3790 return hotkey_notify_extended_hotkey(hkey); 3791 } 3792 3793 return false; 3794 } 3795 3796 static bool hotkey_notify_wakeup(const u32 hkey, 3797 bool *send_acpi_ev, 3798 bool *ignore_acpi_ev) 3799 { 3800 /* 0x2000-0x2FFF: Wakeup reason */ 3801 *send_acpi_ev = true; 3802 *ignore_acpi_ev = false; 3803 3804 switch (hkey) { 3805 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3806 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3807 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3808 *ignore_acpi_ev = true; 3809 break; 3810 3811 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3812 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3813 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3814 *ignore_acpi_ev = true; 3815 break; 3816 3817 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3818 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3819 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3820 /* how to auto-heal: */ 3821 /* 2313: woke up from S3, go to S4/S5 */ 3822 /* 2413: woke up from S4, go to S5 */ 3823 break; 3824 3825 default: 3826 return false; 3827 } 3828 3829 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3830 pr_info("woke up due to a hot-unplug request...\n"); 3831 hotkey_wakeup_reason_notify_change(); 3832 } 3833 return true; 3834 } 3835 3836 static bool hotkey_notify_dockevent(const u32 hkey, 3837 bool *send_acpi_ev, 3838 bool *ignore_acpi_ev) 3839 { 3840 /* 0x4000-0x4FFF: dock-related events */ 3841 *send_acpi_ev = true; 3842 *ignore_acpi_ev = false; 3843 3844 switch (hkey) { 3845 case TP_HKEY_EV_UNDOCK_ACK: 3846 /* ACPI undock operation completed after wakeup */ 3847 hotkey_autosleep_ack = 1; 3848 pr_info("undocked\n"); 3849 hotkey_wakeup_hotunplug_complete_notify_change(); 3850 return true; 3851 3852 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3853 pr_info("docked into hotplug port replicator\n"); 3854 return true; 3855 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3856 pr_info("undocked from hotplug port replicator\n"); 3857 return true; 3858 3859 /* 3860 * Deliberately ignore attaching and detaching the keybord cover to avoid 3861 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events 3862 * to userspace. 3863 * 3864 * Please refer to the following thread for more information and a preliminary 3865 * implementation using the GTOP ("Get Tablet OPtions") interface that could be 3866 * extended to other attachment options of the ThinkPad X1 Tablet series, such as 3867 * the Pico cartridge dock module: 3868 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/ 3869 */ 3870 case TP_HKEY_EV_KBD_COVER_ATTACH: 3871 case TP_HKEY_EV_KBD_COVER_DETACH: 3872 *send_acpi_ev = false; 3873 *ignore_acpi_ev = true; 3874 return true; 3875 3876 default: 3877 return false; 3878 } 3879 } 3880 3881 static bool hotkey_notify_usrevent(const u32 hkey, 3882 bool *send_acpi_ev, 3883 bool *ignore_acpi_ev) 3884 { 3885 /* 0x5000-0x5FFF: human interface helpers */ 3886 *send_acpi_ev = true; 3887 *ignore_acpi_ev = false; 3888 3889 switch (hkey) { 3890 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 3891 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 3892 return true; 3893 3894 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 3895 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 3896 tpacpi_input_send_tabletsw(); 3897 hotkey_tablet_mode_notify_change(); 3898 *send_acpi_ev = false; 3899 return true; 3900 3901 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 3902 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 3903 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 3904 /* do not propagate these events */ 3905 *ignore_acpi_ev = true; 3906 return true; 3907 3908 default: 3909 return false; 3910 } 3911 } 3912 3913 static void thermal_dump_all_sensors(void); 3914 static void palmsensor_refresh(void); 3915 3916 static bool hotkey_notify_6xxx(const u32 hkey, 3917 bool *send_acpi_ev, 3918 bool *ignore_acpi_ev) 3919 { 3920 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 3921 *send_acpi_ev = true; 3922 *ignore_acpi_ev = false; 3923 3924 switch (hkey) { 3925 case TP_HKEY_EV_THM_TABLE_CHANGED: 3926 pr_debug("EC reports: Thermal Table has changed\n"); 3927 /* recommended action: do nothing, we don't have 3928 * Lenovo ATM information */ 3929 return true; 3930 case TP_HKEY_EV_THM_CSM_COMPLETED: 3931 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 3932 /* Thermal event - pass on to event handler */ 3933 tpacpi_driver_event(hkey); 3934 return true; 3935 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 3936 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 3937 /* recommended action: do nothing, we don't have 3938 * Lenovo ATM information */ 3939 return true; 3940 case TP_HKEY_EV_ALARM_BAT_HOT: 3941 pr_crit("THERMAL ALARM: battery is too hot!\n"); 3942 /* recommended action: warn user through gui */ 3943 break; 3944 case TP_HKEY_EV_ALARM_BAT_XHOT: 3945 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 3946 /* recommended action: immediate sleep/hibernate */ 3947 break; 3948 case TP_HKEY_EV_ALARM_SENSOR_HOT: 3949 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 3950 /* recommended action: warn user through gui, that */ 3951 /* some internal component is too hot */ 3952 break; 3953 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 3954 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 3955 /* recommended action: immediate sleep/hibernate */ 3956 break; 3957 case TP_HKEY_EV_AC_CHANGED: 3958 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 3959 * AC status changed; can be triggered by plugging or 3960 * unplugging AC adapter, docking or undocking. */ 3961 3962 fallthrough; 3963 3964 case TP_HKEY_EV_KEY_NUMLOCK: 3965 case TP_HKEY_EV_KEY_FN: 3966 /* key press events, we just ignore them as long as the EC 3967 * is still reporting them in the normal keyboard stream */ 3968 *send_acpi_ev = false; 3969 *ignore_acpi_ev = true; 3970 return true; 3971 3972 case TP_HKEY_EV_KEY_FN_ESC: 3973 /* Get the media key status to force the status LED to update */ 3974 acpi_evalf(hkey_handle, NULL, "GMKS", "v"); 3975 *send_acpi_ev = false; 3976 *ignore_acpi_ev = true; 3977 return true; 3978 3979 case TP_HKEY_EV_TABLET_CHANGED: 3980 tpacpi_input_send_tabletsw(); 3981 hotkey_tablet_mode_notify_change(); 3982 *send_acpi_ev = false; 3983 return true; 3984 3985 case TP_HKEY_EV_PALM_DETECTED: 3986 case TP_HKEY_EV_PALM_UNDETECTED: 3987 /* palm detected - pass on to event handler */ 3988 palmsensor_refresh(); 3989 return true; 3990 3991 default: 3992 /* report simply as unknown, no sensor dump */ 3993 return false; 3994 } 3995 3996 thermal_dump_all_sensors(); 3997 return true; 3998 } 3999 4000 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4001 { 4002 u32 hkey; 4003 bool send_acpi_ev; 4004 bool ignore_acpi_ev; 4005 bool known_ev; 4006 4007 if (event != 0x80) { 4008 pr_err("unknown HKEY notification event %d\n", event); 4009 /* forward it to userspace, maybe it knows how to handle it */ 4010 acpi_bus_generate_netlink_event( 4011 ibm->acpi->device->pnp.device_class, 4012 dev_name(&ibm->acpi->device->dev), 4013 event, 0); 4014 return; 4015 } 4016 4017 while (1) { 4018 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4019 pr_err("failed to retrieve HKEY event\n"); 4020 return; 4021 } 4022 4023 if (hkey == 0) { 4024 /* queue empty */ 4025 return; 4026 } 4027 4028 send_acpi_ev = true; 4029 ignore_acpi_ev = false; 4030 4031 switch (hkey >> 12) { 4032 case 1: 4033 /* 0x1000-0x1FFF: key presses */ 4034 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4035 &ignore_acpi_ev); 4036 break; 4037 case 2: 4038 /* 0x2000-0x2FFF: Wakeup reason */ 4039 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4040 &ignore_acpi_ev); 4041 break; 4042 case 3: 4043 /* 0x3000-0x3FFF: bay-related wakeups */ 4044 switch (hkey) { 4045 case TP_HKEY_EV_BAYEJ_ACK: 4046 hotkey_autosleep_ack = 1; 4047 pr_info("bay ejected\n"); 4048 hotkey_wakeup_hotunplug_complete_notify_change(); 4049 known_ev = true; 4050 break; 4051 case TP_HKEY_EV_OPTDRV_EJ: 4052 /* FIXME: kick libata if SATA link offline */ 4053 known_ev = true; 4054 break; 4055 default: 4056 known_ev = false; 4057 } 4058 break; 4059 case 4: 4060 /* 0x4000-0x4FFF: dock-related events */ 4061 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4062 &ignore_acpi_ev); 4063 break; 4064 case 5: 4065 /* 0x5000-0x5FFF: human interface helpers */ 4066 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4067 &ignore_acpi_ev); 4068 break; 4069 case 6: 4070 /* 0x6000-0x6FFF: thermal alarms/notices and 4071 * keyboard events */ 4072 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4073 &ignore_acpi_ev); 4074 break; 4075 case 7: 4076 /* 0x7000-0x7FFF: misc */ 4077 if (tp_features.hotkey_wlsw && 4078 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4079 tpacpi_send_radiosw_update(); 4080 send_acpi_ev = 0; 4081 known_ev = true; 4082 break; 4083 } 4084 fallthrough; /* to default */ 4085 default: 4086 known_ev = false; 4087 } 4088 if (!known_ev) { 4089 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4090 pr_notice("please report the conditions when this event happened to %s\n", 4091 TPACPI_MAIL); 4092 } 4093 4094 /* netlink events */ 4095 if (!ignore_acpi_ev && send_acpi_ev) { 4096 acpi_bus_generate_netlink_event( 4097 ibm->acpi->device->pnp.device_class, 4098 dev_name(&ibm->acpi->device->dev), 4099 event, hkey); 4100 } 4101 } 4102 } 4103 4104 static void hotkey_suspend(void) 4105 { 4106 /* Do these on suspend, we get the events on early resume! */ 4107 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4108 hotkey_autosleep_ack = 0; 4109 4110 /* save previous mode of adaptive keyboard of X1 Carbon */ 4111 if (tp_features.has_adaptive_kbd) { 4112 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4113 "GTRW", "dd", 0)) { 4114 pr_err("Cannot read adaptive keyboard mode.\n"); 4115 } 4116 } 4117 } 4118 4119 static void hotkey_resume(void) 4120 { 4121 tpacpi_disable_brightness_delay(); 4122 4123 if (hotkey_status_set(true) < 0 || 4124 hotkey_mask_set(hotkey_acpi_mask) < 0) 4125 pr_err("error while attempting to reset the event firmware interface\n"); 4126 4127 tpacpi_send_radiosw_update(); 4128 tpacpi_input_send_tabletsw(); 4129 hotkey_tablet_mode_notify_change(); 4130 hotkey_wakeup_reason_notify_change(); 4131 hotkey_wakeup_hotunplug_complete_notify_change(); 4132 hotkey_poll_setup_safe(false); 4133 4134 /* restore previous mode of adapive keyboard of X1 Carbon */ 4135 if (tp_features.has_adaptive_kbd) { 4136 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4137 adaptive_keyboard_prev_mode)) { 4138 pr_err("Cannot set adaptive keyboard mode.\n"); 4139 } 4140 } 4141 } 4142 4143 /* procfs -------------------------------------------------------------- */ 4144 static int hotkey_read(struct seq_file *m) 4145 { 4146 int res, status; 4147 4148 if (!tp_features.hotkey) { 4149 seq_printf(m, "status:\t\tnot supported\n"); 4150 return 0; 4151 } 4152 4153 if (mutex_lock_killable(&hotkey_mutex)) 4154 return -ERESTARTSYS; 4155 res = hotkey_status_get(&status); 4156 if (!res) 4157 res = hotkey_mask_get(); 4158 mutex_unlock(&hotkey_mutex); 4159 if (res) 4160 return res; 4161 4162 seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); 4163 if (hotkey_all_mask) { 4164 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4165 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4166 } else { 4167 seq_printf(m, "mask:\t\tnot supported\n"); 4168 seq_printf(m, "commands:\tenable, disable, reset\n"); 4169 } 4170 4171 return 0; 4172 } 4173 4174 static void hotkey_enabledisable_warn(bool enable) 4175 { 4176 tpacpi_log_usertask("procfs hotkey enable/disable"); 4177 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4178 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4179 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4180 } 4181 4182 static int hotkey_write(char *buf) 4183 { 4184 int res; 4185 u32 mask; 4186 char *cmd; 4187 4188 if (!tp_features.hotkey) 4189 return -ENODEV; 4190 4191 if (mutex_lock_killable(&hotkey_mutex)) 4192 return -ERESTARTSYS; 4193 4194 mask = hotkey_user_mask; 4195 4196 res = 0; 4197 while ((cmd = strsep(&buf, ","))) { 4198 if (strlencmp(cmd, "enable") == 0) { 4199 hotkey_enabledisable_warn(1); 4200 } else if (strlencmp(cmd, "disable") == 0) { 4201 hotkey_enabledisable_warn(0); 4202 res = -EPERM; 4203 } else if (strlencmp(cmd, "reset") == 0) { 4204 mask = (hotkey_all_mask | hotkey_source_mask) 4205 & ~hotkey_reserved_mask; 4206 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4207 /* mask set */ 4208 } else if (sscanf(cmd, "%x", &mask) == 1) { 4209 /* mask set */ 4210 } else { 4211 res = -EINVAL; 4212 goto errexit; 4213 } 4214 } 4215 4216 if (!res) { 4217 tpacpi_disclose_usertask("procfs hotkey", 4218 "set mask to 0x%08x\n", mask); 4219 res = hotkey_user_mask_set(mask); 4220 } 4221 4222 errexit: 4223 mutex_unlock(&hotkey_mutex); 4224 return res; 4225 } 4226 4227 static const struct acpi_device_id ibm_htk_device_ids[] = { 4228 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4229 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4230 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4231 {"", 0}, 4232 }; 4233 4234 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4235 .hid = ibm_htk_device_ids, 4236 .notify = hotkey_notify, 4237 .handle = &hkey_handle, 4238 .type = ACPI_DEVICE_NOTIFY, 4239 }; 4240 4241 static struct ibm_struct hotkey_driver_data = { 4242 .name = "hotkey", 4243 .read = hotkey_read, 4244 .write = hotkey_write, 4245 .exit = hotkey_exit, 4246 .resume = hotkey_resume, 4247 .suspend = hotkey_suspend, 4248 .acpi = &ibm_hotkey_acpidriver, 4249 }; 4250 4251 /************************************************************************* 4252 * Bluetooth subdriver 4253 */ 4254 4255 enum { 4256 /* ACPI GBDC/SBDC bits */ 4257 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4258 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4259 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4260 0 = disable, 1 = enable */ 4261 }; 4262 4263 enum { 4264 /* ACPI \BLTH commands */ 4265 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4266 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4267 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4268 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4269 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4270 }; 4271 4272 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4273 4274 static int bluetooth_get_status(void) 4275 { 4276 int status; 4277 4278 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4279 if (dbg_bluetoothemul) 4280 return (tpacpi_bluetooth_emulstate) ? 4281 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4282 #endif 4283 4284 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4285 return -EIO; 4286 4287 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4288 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4289 } 4290 4291 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4292 { 4293 int status; 4294 4295 vdbg_printk(TPACPI_DBG_RFKILL, 4296 "will attempt to %s bluetooth\n", 4297 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4298 4299 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4300 if (dbg_bluetoothemul) { 4301 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4302 return 0; 4303 } 4304 #endif 4305 4306 if (state == TPACPI_RFK_RADIO_ON) 4307 status = TP_ACPI_BLUETOOTH_RADIOSSW 4308 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4309 else 4310 status = 0; 4311 4312 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4313 return -EIO; 4314 4315 return 0; 4316 } 4317 4318 /* sysfs bluetooth enable ---------------------------------------------- */ 4319 static ssize_t bluetooth_enable_show(struct device *dev, 4320 struct device_attribute *attr, 4321 char *buf) 4322 { 4323 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4324 attr, buf); 4325 } 4326 4327 static ssize_t bluetooth_enable_store(struct device *dev, 4328 struct device_attribute *attr, 4329 const char *buf, size_t count) 4330 { 4331 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4332 attr, buf, count); 4333 } 4334 4335 static DEVICE_ATTR_RW(bluetooth_enable); 4336 4337 /* --------------------------------------------------------------------- */ 4338 4339 static struct attribute *bluetooth_attributes[] = { 4340 &dev_attr_bluetooth_enable.attr, 4341 NULL 4342 }; 4343 4344 static umode_t bluetooth_attr_is_visible(struct kobject *kobj, 4345 struct attribute *attr, int n) 4346 { 4347 return tp_features.bluetooth ? attr->mode : 0; 4348 } 4349 4350 static const struct attribute_group bluetooth_attr_group = { 4351 .is_visible = bluetooth_attr_is_visible, 4352 .attrs = bluetooth_attributes, 4353 }; 4354 4355 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4356 .get_status = bluetooth_get_status, 4357 .set_status = bluetooth_set_status, 4358 }; 4359 4360 static void bluetooth_shutdown(void) 4361 { 4362 /* Order firmware to save current state to NVRAM */ 4363 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4364 TP_ACPI_BLTH_SAVE_STATE)) 4365 pr_notice("failed to save bluetooth state to NVRAM\n"); 4366 else 4367 vdbg_printk(TPACPI_DBG_RFKILL, 4368 "bluetooth state saved to NVRAM\n"); 4369 } 4370 4371 static void bluetooth_exit(void) 4372 { 4373 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4374 bluetooth_shutdown(); 4375 } 4376 4377 static const struct dmi_system_id fwbug_list[] __initconst = { 4378 { 4379 .ident = "ThinkPad E485", 4380 .driver_data = &quirk_btusb_bug, 4381 .matches = { 4382 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4383 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4384 }, 4385 }, 4386 { 4387 .ident = "ThinkPad E585", 4388 .driver_data = &quirk_btusb_bug, 4389 .matches = { 4390 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4391 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4392 }, 4393 }, 4394 { 4395 .ident = "ThinkPad A285 - 20MW", 4396 .driver_data = &quirk_btusb_bug, 4397 .matches = { 4398 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4399 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4400 }, 4401 }, 4402 { 4403 .ident = "ThinkPad A285 - 20MX", 4404 .driver_data = &quirk_btusb_bug, 4405 .matches = { 4406 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4407 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4408 }, 4409 }, 4410 { 4411 .ident = "ThinkPad A485 - 20MU", 4412 .driver_data = &quirk_btusb_bug, 4413 .matches = { 4414 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4415 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4416 }, 4417 }, 4418 { 4419 .ident = "ThinkPad A485 - 20MV", 4420 .driver_data = &quirk_btusb_bug, 4421 .matches = { 4422 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4423 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4424 }, 4425 }, 4426 { 4427 .ident = "L14 Gen2 AMD", 4428 .driver_data = &quirk_s2idle_bug, 4429 .matches = { 4430 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4431 DMI_MATCH(DMI_PRODUCT_NAME, "20X5"), 4432 } 4433 }, 4434 { 4435 .ident = "T14s Gen2 AMD", 4436 .driver_data = &quirk_s2idle_bug, 4437 .matches = { 4438 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4439 DMI_MATCH(DMI_PRODUCT_NAME, "20XF"), 4440 } 4441 }, 4442 { 4443 .ident = "X13 Gen2 AMD", 4444 .driver_data = &quirk_s2idle_bug, 4445 .matches = { 4446 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4447 DMI_MATCH(DMI_PRODUCT_NAME, "20XH"), 4448 } 4449 }, 4450 { 4451 .ident = "T14 Gen2 AMD", 4452 .driver_data = &quirk_s2idle_bug, 4453 .matches = { 4454 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4455 DMI_MATCH(DMI_PRODUCT_NAME, "20XK"), 4456 } 4457 }, 4458 { 4459 .ident = "T14 Gen1 AMD", 4460 .driver_data = &quirk_s2idle_bug, 4461 .matches = { 4462 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4463 DMI_MATCH(DMI_PRODUCT_NAME, "20UD"), 4464 } 4465 }, 4466 { 4467 .ident = "T14 Gen1 AMD", 4468 .driver_data = &quirk_s2idle_bug, 4469 .matches = { 4470 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4471 DMI_MATCH(DMI_PRODUCT_NAME, "20UE"), 4472 } 4473 }, 4474 { 4475 .ident = "T14s Gen1 AMD", 4476 .driver_data = &quirk_s2idle_bug, 4477 .matches = { 4478 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4479 DMI_MATCH(DMI_PRODUCT_NAME, "20UH"), 4480 } 4481 }, 4482 { 4483 .ident = "P14s Gen1 AMD", 4484 .driver_data = &quirk_s2idle_bug, 4485 .matches = { 4486 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4487 DMI_MATCH(DMI_PRODUCT_NAME, "20Y1"), 4488 } 4489 }, 4490 { 4491 .ident = "P14s Gen2 AMD", 4492 .driver_data = &quirk_s2idle_bug, 4493 .matches = { 4494 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4495 DMI_MATCH(DMI_PRODUCT_NAME, "21A0"), 4496 } 4497 }, 4498 {} 4499 }; 4500 4501 #ifdef CONFIG_SUSPEND 4502 /* 4503 * Lenovo laptops from a variety of generations run a SMI handler during the D3->D0 4504 * transition that occurs specifically when exiting suspend to idle which can cause 4505 * large delays during resume when the IOMMU translation layer is enabled (the default 4506 * behavior) for NVME devices: 4507 * 4508 * To avoid this firmware problem, skip the SMI handler on these machines before the 4509 * D0 transition occurs. 4510 */ 4511 static void thinkpad_acpi_amd_s2idle_restore(void) 4512 { 4513 struct resource *res; 4514 void __iomem *addr; 4515 u8 val; 4516 4517 res = request_mem_region_muxed(tp_features.quirks->s2idle_bug_mmio, 1, 4518 "thinkpad_acpi_pm80"); 4519 if (!res) 4520 return; 4521 4522 addr = ioremap(tp_features.quirks->s2idle_bug_mmio, 1); 4523 if (!addr) 4524 goto cleanup_resource; 4525 4526 val = ioread8(addr); 4527 iowrite8(val & ~BIT(0), addr); 4528 4529 iounmap(addr); 4530 cleanup_resource: 4531 release_resource(res); 4532 } 4533 4534 static struct acpi_s2idle_dev_ops thinkpad_acpi_s2idle_dev_ops = { 4535 .restore = thinkpad_acpi_amd_s2idle_restore, 4536 }; 4537 #endif 4538 4539 static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4540 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4541 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4542 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4543 {} 4544 }; 4545 4546 4547 static int __init have_bt_fwbug(void) 4548 { 4549 /* 4550 * Some AMD based ThinkPads have a firmware bug that calling 4551 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4552 */ 4553 if (tp_features.quirks && tp_features.quirks->btusb_bug && 4554 pci_dev_present(fwbug_cards_ids)) { 4555 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4556 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4557 return 1; 4558 } else 4559 return 0; 4560 } 4561 4562 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4563 { 4564 int res; 4565 int status = 0; 4566 4567 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4568 "initializing bluetooth subdriver\n"); 4569 4570 TPACPI_ACPIHANDLE_INIT(hkey); 4571 4572 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4573 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4574 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4575 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4576 4577 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4578 "bluetooth is %s, status 0x%02x\n", 4579 str_supported(tp_features.bluetooth), 4580 status); 4581 4582 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4583 if (dbg_bluetoothemul) { 4584 tp_features.bluetooth = 1; 4585 pr_info("bluetooth switch emulation enabled\n"); 4586 } else 4587 #endif 4588 if (tp_features.bluetooth && 4589 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4590 /* no bluetooth hardware present in system */ 4591 tp_features.bluetooth = 0; 4592 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4593 "bluetooth hardware not installed\n"); 4594 } 4595 4596 if (!tp_features.bluetooth) 4597 return -ENODEV; 4598 4599 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4600 &bluetooth_tprfk_ops, 4601 RFKILL_TYPE_BLUETOOTH, 4602 TPACPI_RFK_BLUETOOTH_SW_NAME, 4603 true); 4604 return res; 4605 } 4606 4607 /* procfs -------------------------------------------------------------- */ 4608 static int bluetooth_read(struct seq_file *m) 4609 { 4610 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4611 } 4612 4613 static int bluetooth_write(char *buf) 4614 { 4615 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4616 } 4617 4618 static struct ibm_struct bluetooth_driver_data = { 4619 .name = "bluetooth", 4620 .read = bluetooth_read, 4621 .write = bluetooth_write, 4622 .exit = bluetooth_exit, 4623 .shutdown = bluetooth_shutdown, 4624 }; 4625 4626 /************************************************************************* 4627 * Wan subdriver 4628 */ 4629 4630 enum { 4631 /* ACPI GWAN/SWAN bits */ 4632 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4633 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4634 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4635 0 = disable, 1 = enable */ 4636 }; 4637 4638 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4639 4640 static int wan_get_status(void) 4641 { 4642 int status; 4643 4644 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4645 if (dbg_wwanemul) 4646 return (tpacpi_wwan_emulstate) ? 4647 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4648 #endif 4649 4650 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4651 return -EIO; 4652 4653 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4654 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4655 } 4656 4657 static int wan_set_status(enum tpacpi_rfkill_state state) 4658 { 4659 int status; 4660 4661 vdbg_printk(TPACPI_DBG_RFKILL, 4662 "will attempt to %s wwan\n", 4663 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4664 4665 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4666 if (dbg_wwanemul) { 4667 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4668 return 0; 4669 } 4670 #endif 4671 4672 if (state == TPACPI_RFK_RADIO_ON) 4673 status = TP_ACPI_WANCARD_RADIOSSW 4674 | TP_ACPI_WANCARD_RESUMECTRL; 4675 else 4676 status = 0; 4677 4678 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4679 return -EIO; 4680 4681 return 0; 4682 } 4683 4684 /* sysfs wan enable ---------------------------------------------------- */ 4685 static ssize_t wan_enable_show(struct device *dev, 4686 struct device_attribute *attr, 4687 char *buf) 4688 { 4689 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4690 attr, buf); 4691 } 4692 4693 static ssize_t wan_enable_store(struct device *dev, 4694 struct device_attribute *attr, 4695 const char *buf, size_t count) 4696 { 4697 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4698 attr, buf, count); 4699 } 4700 4701 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4702 wan_enable_show, wan_enable_store); 4703 4704 /* --------------------------------------------------------------------- */ 4705 4706 static struct attribute *wan_attributes[] = { 4707 &dev_attr_wwan_enable.attr, 4708 NULL 4709 }; 4710 4711 static umode_t wan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 4712 int n) 4713 { 4714 return tp_features.wan ? attr->mode : 0; 4715 } 4716 4717 static const struct attribute_group wan_attr_group = { 4718 .is_visible = wan_attr_is_visible, 4719 .attrs = wan_attributes, 4720 }; 4721 4722 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4723 .get_status = wan_get_status, 4724 .set_status = wan_set_status, 4725 }; 4726 4727 static void wan_shutdown(void) 4728 { 4729 /* Order firmware to save current state to NVRAM */ 4730 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4731 TP_ACPI_WGSV_SAVE_STATE)) 4732 pr_notice("failed to save WWAN state to NVRAM\n"); 4733 else 4734 vdbg_printk(TPACPI_DBG_RFKILL, 4735 "WWAN state saved to NVRAM\n"); 4736 } 4737 4738 static void wan_exit(void) 4739 { 4740 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4741 wan_shutdown(); 4742 } 4743 4744 static int __init wan_init(struct ibm_init_struct *iibm) 4745 { 4746 int res; 4747 int status = 0; 4748 4749 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4750 "initializing wan subdriver\n"); 4751 4752 TPACPI_ACPIHANDLE_INIT(hkey); 4753 4754 tp_features.wan = hkey_handle && 4755 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4756 4757 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4758 "wan is %s, status 0x%02x\n", 4759 str_supported(tp_features.wan), 4760 status); 4761 4762 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4763 if (dbg_wwanemul) { 4764 tp_features.wan = 1; 4765 pr_info("wwan switch emulation enabled\n"); 4766 } else 4767 #endif 4768 if (tp_features.wan && 4769 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4770 /* no wan hardware present in system */ 4771 tp_features.wan = 0; 4772 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4773 "wan hardware not installed\n"); 4774 } 4775 4776 if (!tp_features.wan) 4777 return -ENODEV; 4778 4779 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4780 &wan_tprfk_ops, 4781 RFKILL_TYPE_WWAN, 4782 TPACPI_RFK_WWAN_SW_NAME, 4783 true); 4784 return res; 4785 } 4786 4787 /* procfs -------------------------------------------------------------- */ 4788 static int wan_read(struct seq_file *m) 4789 { 4790 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4791 } 4792 4793 static int wan_write(char *buf) 4794 { 4795 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4796 } 4797 4798 static struct ibm_struct wan_driver_data = { 4799 .name = "wan", 4800 .read = wan_read, 4801 .write = wan_write, 4802 .exit = wan_exit, 4803 .shutdown = wan_shutdown, 4804 }; 4805 4806 /************************************************************************* 4807 * UWB subdriver 4808 */ 4809 4810 enum { 4811 /* ACPI GUWB/SUWB bits */ 4812 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4813 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4814 }; 4815 4816 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4817 4818 static int uwb_get_status(void) 4819 { 4820 int status; 4821 4822 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4823 if (dbg_uwbemul) 4824 return (tpacpi_uwb_emulstate) ? 4825 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4826 #endif 4827 4828 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4829 return -EIO; 4830 4831 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4832 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4833 } 4834 4835 static int uwb_set_status(enum tpacpi_rfkill_state state) 4836 { 4837 int status; 4838 4839 vdbg_printk(TPACPI_DBG_RFKILL, 4840 "will attempt to %s UWB\n", 4841 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4842 4843 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4844 if (dbg_uwbemul) { 4845 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4846 return 0; 4847 } 4848 #endif 4849 4850 if (state == TPACPI_RFK_RADIO_ON) 4851 status = TP_ACPI_UWB_RADIOSSW; 4852 else 4853 status = 0; 4854 4855 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4856 return -EIO; 4857 4858 return 0; 4859 } 4860 4861 /* --------------------------------------------------------------------- */ 4862 4863 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4864 .get_status = uwb_get_status, 4865 .set_status = uwb_set_status, 4866 }; 4867 4868 static void uwb_exit(void) 4869 { 4870 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4871 } 4872 4873 static int __init uwb_init(struct ibm_init_struct *iibm) 4874 { 4875 int res; 4876 int status = 0; 4877 4878 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4879 "initializing uwb subdriver\n"); 4880 4881 TPACPI_ACPIHANDLE_INIT(hkey); 4882 4883 tp_features.uwb = hkey_handle && 4884 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4885 4886 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4887 "uwb is %s, status 0x%02x\n", 4888 str_supported(tp_features.uwb), 4889 status); 4890 4891 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4892 if (dbg_uwbemul) { 4893 tp_features.uwb = 1; 4894 pr_info("uwb switch emulation enabled\n"); 4895 } else 4896 #endif 4897 if (tp_features.uwb && 4898 !(status & TP_ACPI_UWB_HWPRESENT)) { 4899 /* no uwb hardware present in system */ 4900 tp_features.uwb = 0; 4901 dbg_printk(TPACPI_DBG_INIT, 4902 "uwb hardware not installed\n"); 4903 } 4904 4905 if (!tp_features.uwb) 4906 return -ENODEV; 4907 4908 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4909 &uwb_tprfk_ops, 4910 RFKILL_TYPE_UWB, 4911 TPACPI_RFK_UWB_SW_NAME, 4912 false); 4913 return res; 4914 } 4915 4916 static struct ibm_struct uwb_driver_data = { 4917 .name = "uwb", 4918 .exit = uwb_exit, 4919 .flags.experimental = 1, 4920 }; 4921 4922 /************************************************************************* 4923 * Video subdriver 4924 */ 4925 4926 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4927 4928 enum video_access_mode { 4929 TPACPI_VIDEO_NONE = 0, 4930 TPACPI_VIDEO_570, /* 570 */ 4931 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4932 TPACPI_VIDEO_NEW, /* all others */ 4933 }; 4934 4935 enum { /* video status flags, based on VIDEO_570 */ 4936 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4937 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4938 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4939 }; 4940 4941 enum { /* TPACPI_VIDEO_570 constants */ 4942 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4943 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4944 * video_status_flags */ 4945 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4946 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4947 }; 4948 4949 static enum video_access_mode video_supported; 4950 static int video_orig_autosw; 4951 4952 static int video_autosw_get(void); 4953 static int video_autosw_set(int enable); 4954 4955 TPACPI_HANDLE(vid, root, 4956 "\\_SB.PCI.AGP.VGA", /* 570 */ 4957 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4958 "\\_SB.PCI0.VID0", /* 770e */ 4959 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4960 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4961 "\\_SB.PCI0.AGP.VID", /* all others */ 4962 ); /* R30, R31 */ 4963 4964 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4965 4966 static int __init video_init(struct ibm_init_struct *iibm) 4967 { 4968 int ivga; 4969 4970 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4971 4972 TPACPI_ACPIHANDLE_INIT(vid); 4973 if (tpacpi_is_ibm()) 4974 TPACPI_ACPIHANDLE_INIT(vid2); 4975 4976 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4977 /* G41, assume IVGA doesn't change */ 4978 vid_handle = vid2_handle; 4979 4980 if (!vid_handle) 4981 /* video switching not supported on R30, R31 */ 4982 video_supported = TPACPI_VIDEO_NONE; 4983 else if (tpacpi_is_ibm() && 4984 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4985 /* 570 */ 4986 video_supported = TPACPI_VIDEO_570; 4987 else if (tpacpi_is_ibm() && 4988 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4989 /* 600e/x, 770e, 770x */ 4990 video_supported = TPACPI_VIDEO_770; 4991 else 4992 /* all others */ 4993 video_supported = TPACPI_VIDEO_NEW; 4994 4995 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4996 str_supported(video_supported != TPACPI_VIDEO_NONE), 4997 video_supported); 4998 4999 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : -ENODEV; 5000 } 5001 5002 static void video_exit(void) 5003 { 5004 dbg_printk(TPACPI_DBG_EXIT, 5005 "restoring original video autoswitch mode\n"); 5006 if (video_autosw_set(video_orig_autosw)) 5007 pr_err("error while trying to restore original video autoswitch mode\n"); 5008 } 5009 5010 static int video_outputsw_get(void) 5011 { 5012 int status = 0; 5013 int i; 5014 5015 switch (video_supported) { 5016 case TPACPI_VIDEO_570: 5017 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 5018 TP_ACPI_VIDEO_570_PHSCMD)) 5019 return -EIO; 5020 status = i & TP_ACPI_VIDEO_570_PHSMASK; 5021 break; 5022 case TPACPI_VIDEO_770: 5023 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 5024 return -EIO; 5025 if (i) 5026 status |= TP_ACPI_VIDEO_S_LCD; 5027 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 5028 return -EIO; 5029 if (i) 5030 status |= TP_ACPI_VIDEO_S_CRT; 5031 break; 5032 case TPACPI_VIDEO_NEW: 5033 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 5034 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 5035 return -EIO; 5036 if (i) 5037 status |= TP_ACPI_VIDEO_S_CRT; 5038 5039 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 5040 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 5041 return -EIO; 5042 if (i) 5043 status |= TP_ACPI_VIDEO_S_LCD; 5044 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 5045 return -EIO; 5046 if (i) 5047 status |= TP_ACPI_VIDEO_S_DVI; 5048 break; 5049 default: 5050 return -ENOSYS; 5051 } 5052 5053 return status; 5054 } 5055 5056 static int video_outputsw_set(int status) 5057 { 5058 int autosw; 5059 int res = 0; 5060 5061 switch (video_supported) { 5062 case TPACPI_VIDEO_570: 5063 res = acpi_evalf(NULL, NULL, 5064 "\\_SB.PHS2", "vdd", 5065 TP_ACPI_VIDEO_570_PHS2CMD, 5066 status | TP_ACPI_VIDEO_570_PHS2SET); 5067 break; 5068 case TPACPI_VIDEO_770: 5069 autosw = video_autosw_get(); 5070 if (autosw < 0) 5071 return autosw; 5072 5073 res = video_autosw_set(1); 5074 if (res) 5075 return res; 5076 res = acpi_evalf(vid_handle, NULL, 5077 "ASWT", "vdd", status * 0x100, 0); 5078 if (!autosw && video_autosw_set(autosw)) { 5079 pr_err("video auto-switch left enabled due to error\n"); 5080 return -EIO; 5081 } 5082 break; 5083 case TPACPI_VIDEO_NEW: 5084 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 5085 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 5086 break; 5087 default: 5088 return -ENOSYS; 5089 } 5090 5091 return (res) ? 0 : -EIO; 5092 } 5093 5094 static int video_autosw_get(void) 5095 { 5096 int autosw = 0; 5097 5098 switch (video_supported) { 5099 case TPACPI_VIDEO_570: 5100 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 5101 return -EIO; 5102 break; 5103 case TPACPI_VIDEO_770: 5104 case TPACPI_VIDEO_NEW: 5105 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 5106 return -EIO; 5107 break; 5108 default: 5109 return -ENOSYS; 5110 } 5111 5112 return autosw & 1; 5113 } 5114 5115 static int video_autosw_set(int enable) 5116 { 5117 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5118 return -EIO; 5119 return 0; 5120 } 5121 5122 static int video_outputsw_cycle(void) 5123 { 5124 int autosw = video_autosw_get(); 5125 int res; 5126 5127 if (autosw < 0) 5128 return autosw; 5129 5130 switch (video_supported) { 5131 case TPACPI_VIDEO_570: 5132 res = video_autosw_set(1); 5133 if (res) 5134 return res; 5135 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5136 break; 5137 case TPACPI_VIDEO_770: 5138 case TPACPI_VIDEO_NEW: 5139 res = video_autosw_set(1); 5140 if (res) 5141 return res; 5142 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5143 break; 5144 default: 5145 return -ENOSYS; 5146 } 5147 if (!autosw && video_autosw_set(autosw)) { 5148 pr_err("video auto-switch left enabled due to error\n"); 5149 return -EIO; 5150 } 5151 5152 return (res) ? 0 : -EIO; 5153 } 5154 5155 static int video_expand_toggle(void) 5156 { 5157 switch (video_supported) { 5158 case TPACPI_VIDEO_570: 5159 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5160 0 : -EIO; 5161 case TPACPI_VIDEO_770: 5162 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5163 0 : -EIO; 5164 case TPACPI_VIDEO_NEW: 5165 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5166 0 : -EIO; 5167 default: 5168 return -ENOSYS; 5169 } 5170 /* not reached */ 5171 } 5172 5173 static int video_read(struct seq_file *m) 5174 { 5175 int status, autosw; 5176 5177 if (video_supported == TPACPI_VIDEO_NONE) { 5178 seq_printf(m, "status:\t\tnot supported\n"); 5179 return 0; 5180 } 5181 5182 /* Even reads can crash X.org, so... */ 5183 if (!capable(CAP_SYS_ADMIN)) 5184 return -EPERM; 5185 5186 status = video_outputsw_get(); 5187 if (status < 0) 5188 return status; 5189 5190 autosw = video_autosw_get(); 5191 if (autosw < 0) 5192 return autosw; 5193 5194 seq_printf(m, "status:\t\tsupported\n"); 5195 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); 5196 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); 5197 if (video_supported == TPACPI_VIDEO_NEW) 5198 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); 5199 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); 5200 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5201 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5202 if (video_supported == TPACPI_VIDEO_NEW) 5203 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5204 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5205 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5206 5207 return 0; 5208 } 5209 5210 static int video_write(char *buf) 5211 { 5212 char *cmd; 5213 int enable, disable, status; 5214 int res; 5215 5216 if (video_supported == TPACPI_VIDEO_NONE) 5217 return -ENODEV; 5218 5219 /* Even reads can crash X.org, let alone writes... */ 5220 if (!capable(CAP_SYS_ADMIN)) 5221 return -EPERM; 5222 5223 enable = 0; 5224 disable = 0; 5225 5226 while ((cmd = strsep(&buf, ","))) { 5227 if (strlencmp(cmd, "lcd_enable") == 0) { 5228 enable |= TP_ACPI_VIDEO_S_LCD; 5229 } else if (strlencmp(cmd, "lcd_disable") == 0) { 5230 disable |= TP_ACPI_VIDEO_S_LCD; 5231 } else if (strlencmp(cmd, "crt_enable") == 0) { 5232 enable |= TP_ACPI_VIDEO_S_CRT; 5233 } else if (strlencmp(cmd, "crt_disable") == 0) { 5234 disable |= TP_ACPI_VIDEO_S_CRT; 5235 } else if (video_supported == TPACPI_VIDEO_NEW && 5236 strlencmp(cmd, "dvi_enable") == 0) { 5237 enable |= TP_ACPI_VIDEO_S_DVI; 5238 } else if (video_supported == TPACPI_VIDEO_NEW && 5239 strlencmp(cmd, "dvi_disable") == 0) { 5240 disable |= TP_ACPI_VIDEO_S_DVI; 5241 } else if (strlencmp(cmd, "auto_enable") == 0) { 5242 res = video_autosw_set(1); 5243 if (res) 5244 return res; 5245 } else if (strlencmp(cmd, "auto_disable") == 0) { 5246 res = video_autosw_set(0); 5247 if (res) 5248 return res; 5249 } else if (strlencmp(cmd, "video_switch") == 0) { 5250 res = video_outputsw_cycle(); 5251 if (res) 5252 return res; 5253 } else if (strlencmp(cmd, "expand_toggle") == 0) { 5254 res = video_expand_toggle(); 5255 if (res) 5256 return res; 5257 } else 5258 return -EINVAL; 5259 } 5260 5261 if (enable || disable) { 5262 status = video_outputsw_get(); 5263 if (status < 0) 5264 return status; 5265 res = video_outputsw_set((status & ~disable) | enable); 5266 if (res) 5267 return res; 5268 } 5269 5270 return 0; 5271 } 5272 5273 static struct ibm_struct video_driver_data = { 5274 .name = "video", 5275 .read = video_read, 5276 .write = video_write, 5277 .exit = video_exit, 5278 }; 5279 5280 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5281 5282 /************************************************************************* 5283 * Keyboard backlight subdriver 5284 */ 5285 5286 static enum led_brightness kbdlight_brightness; 5287 static DEFINE_MUTEX(kbdlight_mutex); 5288 5289 static int kbdlight_set_level(int level) 5290 { 5291 int ret = 0; 5292 5293 if (!hkey_handle) 5294 return -ENXIO; 5295 5296 mutex_lock(&kbdlight_mutex); 5297 5298 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5299 ret = -EIO; 5300 else 5301 kbdlight_brightness = level; 5302 5303 mutex_unlock(&kbdlight_mutex); 5304 5305 return ret; 5306 } 5307 5308 static int kbdlight_get_level(void) 5309 { 5310 int status = 0; 5311 5312 if (!hkey_handle) 5313 return -ENXIO; 5314 5315 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5316 return -EIO; 5317 5318 if (status < 0) 5319 return status; 5320 5321 return status & 0x3; 5322 } 5323 5324 static bool kbdlight_is_supported(void) 5325 { 5326 int status = 0; 5327 5328 if (!hkey_handle) 5329 return false; 5330 5331 if (!acpi_has_method(hkey_handle, "MLCG")) { 5332 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5333 return false; 5334 } 5335 5336 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5337 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5338 return false; 5339 } 5340 5341 if (status < 0) { 5342 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5343 return false; 5344 } 5345 5346 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5347 /* 5348 * Guessed test for keyboard backlight: 5349 * 5350 * Machines with backlight keyboard return: 5351 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5352 * b110100010010000000XX - ThinkPad x230 5353 * b010100000010000000XX - ThinkPad x240 5354 * b010100000010000000XX - ThinkPad W541 5355 * (XX is current backlight level) 5356 * 5357 * Machines without backlight keyboard return: 5358 * b10100001000000000000 - ThinkPad x230 5359 * b10110001000000000000 - ThinkPad E430 5360 * b00000000000000000000 - ThinkPad E450 5361 * 5362 * Candidate BITs for detection test (XOR): 5363 * b01000000001000000000 5364 * ^ 5365 */ 5366 return status & BIT(9); 5367 } 5368 5369 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5370 enum led_brightness brightness) 5371 { 5372 return kbdlight_set_level(brightness); 5373 } 5374 5375 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5376 { 5377 int level; 5378 5379 level = kbdlight_get_level(); 5380 if (level < 0) 5381 return 0; 5382 5383 return level; 5384 } 5385 5386 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5387 .led_classdev = { 5388 .name = "tpacpi::kbd_backlight", 5389 .max_brightness = 2, 5390 .flags = LED_BRIGHT_HW_CHANGED, 5391 .brightness_set_blocking = &kbdlight_sysfs_set, 5392 .brightness_get = &kbdlight_sysfs_get, 5393 } 5394 }; 5395 5396 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5397 { 5398 int rc; 5399 5400 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5401 5402 TPACPI_ACPIHANDLE_INIT(hkey); 5403 5404 if (!kbdlight_is_supported()) { 5405 tp_features.kbdlight = 0; 5406 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5407 return -ENODEV; 5408 } 5409 5410 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5411 tp_features.kbdlight = 1; 5412 5413 rc = led_classdev_register(&tpacpi_pdev->dev, 5414 &tpacpi_led_kbdlight.led_classdev); 5415 if (rc < 0) { 5416 tp_features.kbdlight = 0; 5417 return rc; 5418 } 5419 5420 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5421 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5422 return 0; 5423 } 5424 5425 static void kbdlight_exit(void) 5426 { 5427 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5428 } 5429 5430 static int kbdlight_set_level_and_update(int level) 5431 { 5432 int ret; 5433 struct led_classdev *led_cdev; 5434 5435 ret = kbdlight_set_level(level); 5436 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5437 5438 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5439 led_cdev->brightness = level; 5440 5441 return ret; 5442 } 5443 5444 static int kbdlight_read(struct seq_file *m) 5445 { 5446 int level; 5447 5448 if (!tp_features.kbdlight) { 5449 seq_printf(m, "status:\t\tnot supported\n"); 5450 } else { 5451 level = kbdlight_get_level(); 5452 if (level < 0) 5453 seq_printf(m, "status:\t\terror %d\n", level); 5454 else 5455 seq_printf(m, "status:\t\t%d\n", level); 5456 seq_printf(m, "commands:\t0, 1, 2\n"); 5457 } 5458 5459 return 0; 5460 } 5461 5462 static int kbdlight_write(char *buf) 5463 { 5464 char *cmd; 5465 int res, level = -EINVAL; 5466 5467 if (!tp_features.kbdlight) 5468 return -ENODEV; 5469 5470 while ((cmd = strsep(&buf, ","))) { 5471 res = kstrtoint(cmd, 10, &level); 5472 if (res < 0) 5473 return res; 5474 } 5475 5476 if (level >= 3 || level < 0) 5477 return -EINVAL; 5478 5479 return kbdlight_set_level_and_update(level); 5480 } 5481 5482 static void kbdlight_suspend(void) 5483 { 5484 struct led_classdev *led_cdev; 5485 5486 if (!tp_features.kbdlight) 5487 return; 5488 5489 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5490 led_update_brightness(led_cdev); 5491 led_classdev_suspend(led_cdev); 5492 } 5493 5494 static void kbdlight_resume(void) 5495 { 5496 if (!tp_features.kbdlight) 5497 return; 5498 5499 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5500 } 5501 5502 static struct ibm_struct kbdlight_driver_data = { 5503 .name = "kbdlight", 5504 .read = kbdlight_read, 5505 .write = kbdlight_write, 5506 .suspend = kbdlight_suspend, 5507 .resume = kbdlight_resume, 5508 .exit = kbdlight_exit, 5509 }; 5510 5511 /************************************************************************* 5512 * Light (thinklight) subdriver 5513 */ 5514 5515 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5516 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5517 5518 static int light_get_status(void) 5519 { 5520 int status = 0; 5521 5522 if (tp_features.light_status) { 5523 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5524 return -EIO; 5525 return (!!status); 5526 } 5527 5528 return -ENXIO; 5529 } 5530 5531 static int light_set_status(int status) 5532 { 5533 int rc; 5534 5535 if (tp_features.light) { 5536 if (cmos_handle) { 5537 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5538 (status) ? 5539 TP_CMOS_THINKLIGHT_ON : 5540 TP_CMOS_THINKLIGHT_OFF); 5541 } else { 5542 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5543 (status) ? 1 : 0); 5544 } 5545 return (rc) ? 0 : -EIO; 5546 } 5547 5548 return -ENXIO; 5549 } 5550 5551 static int light_sysfs_set(struct led_classdev *led_cdev, 5552 enum led_brightness brightness) 5553 { 5554 return light_set_status((brightness != LED_OFF) ? 5555 TPACPI_LED_ON : TPACPI_LED_OFF); 5556 } 5557 5558 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5559 { 5560 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5561 } 5562 5563 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5564 .led_classdev = { 5565 .name = "tpacpi::thinklight", 5566 .brightness_set_blocking = &light_sysfs_set, 5567 .brightness_get = &light_sysfs_get, 5568 } 5569 }; 5570 5571 static int __init light_init(struct ibm_init_struct *iibm) 5572 { 5573 int rc; 5574 5575 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5576 5577 if (tpacpi_is_ibm()) { 5578 TPACPI_ACPIHANDLE_INIT(ledb); 5579 TPACPI_ACPIHANDLE_INIT(lght); 5580 } 5581 TPACPI_ACPIHANDLE_INIT(cmos); 5582 5583 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5584 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5585 5586 if (tp_features.light) 5587 /* light status not supported on 5588 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5589 tp_features.light_status = 5590 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5591 5592 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5593 str_supported(tp_features.light), 5594 str_supported(tp_features.light_status)); 5595 5596 if (!tp_features.light) 5597 return -ENODEV; 5598 5599 rc = led_classdev_register(&tpacpi_pdev->dev, 5600 &tpacpi_led_thinklight.led_classdev); 5601 5602 if (rc < 0) { 5603 tp_features.light = 0; 5604 tp_features.light_status = 0; 5605 } else { 5606 rc = 0; 5607 } 5608 5609 return rc; 5610 } 5611 5612 static void light_exit(void) 5613 { 5614 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5615 } 5616 5617 static int light_read(struct seq_file *m) 5618 { 5619 int status; 5620 5621 if (!tp_features.light) { 5622 seq_printf(m, "status:\t\tnot supported\n"); 5623 } else if (!tp_features.light_status) { 5624 seq_printf(m, "status:\t\tunknown\n"); 5625 seq_printf(m, "commands:\ton, off\n"); 5626 } else { 5627 status = light_get_status(); 5628 if (status < 0) 5629 return status; 5630 seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); 5631 seq_printf(m, "commands:\ton, off\n"); 5632 } 5633 5634 return 0; 5635 } 5636 5637 static int light_write(char *buf) 5638 { 5639 char *cmd; 5640 int newstatus = 0; 5641 5642 if (!tp_features.light) 5643 return -ENODEV; 5644 5645 while ((cmd = strsep(&buf, ","))) { 5646 if (strlencmp(cmd, "on") == 0) { 5647 newstatus = 1; 5648 } else if (strlencmp(cmd, "off") == 0) { 5649 newstatus = 0; 5650 } else 5651 return -EINVAL; 5652 } 5653 5654 return light_set_status(newstatus); 5655 } 5656 5657 static struct ibm_struct light_driver_data = { 5658 .name = "light", 5659 .read = light_read, 5660 .write = light_write, 5661 .exit = light_exit, 5662 }; 5663 5664 /************************************************************************* 5665 * CMOS subdriver 5666 */ 5667 5668 /* sysfs cmos_command -------------------------------------------------- */ 5669 static ssize_t cmos_command_store(struct device *dev, 5670 struct device_attribute *attr, 5671 const char *buf, size_t count) 5672 { 5673 unsigned long cmos_cmd; 5674 int res; 5675 5676 if (parse_strtoul(buf, 21, &cmos_cmd)) 5677 return -EINVAL; 5678 5679 res = issue_thinkpad_cmos_command(cmos_cmd); 5680 return (res) ? res : count; 5681 } 5682 5683 static DEVICE_ATTR_WO(cmos_command); 5684 5685 static struct attribute *cmos_attributes[] = { 5686 &dev_attr_cmos_command.attr, 5687 NULL 5688 }; 5689 5690 static umode_t cmos_attr_is_visible(struct kobject *kobj, 5691 struct attribute *attr, int n) 5692 { 5693 return cmos_handle ? attr->mode : 0; 5694 } 5695 5696 static const struct attribute_group cmos_attr_group = { 5697 .is_visible = cmos_attr_is_visible, 5698 .attrs = cmos_attributes, 5699 }; 5700 5701 /* --------------------------------------------------------------------- */ 5702 5703 static int __init cmos_init(struct ibm_init_struct *iibm) 5704 { 5705 vdbg_printk(TPACPI_DBG_INIT, 5706 "initializing cmos commands subdriver\n"); 5707 5708 TPACPI_ACPIHANDLE_INIT(cmos); 5709 5710 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5711 str_supported(cmos_handle != NULL)); 5712 5713 return cmos_handle ? 0 : -ENODEV; 5714 } 5715 5716 static int cmos_read(struct seq_file *m) 5717 { 5718 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5719 R30, R31, T20-22, X20-21 */ 5720 if (!cmos_handle) 5721 seq_printf(m, "status:\t\tnot supported\n"); 5722 else { 5723 seq_printf(m, "status:\t\tsupported\n"); 5724 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5725 } 5726 5727 return 0; 5728 } 5729 5730 static int cmos_write(char *buf) 5731 { 5732 char *cmd; 5733 int cmos_cmd, res; 5734 5735 while ((cmd = strsep(&buf, ","))) { 5736 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5737 cmos_cmd >= 0 && cmos_cmd <= 21) { 5738 /* cmos_cmd set */ 5739 } else 5740 return -EINVAL; 5741 5742 res = issue_thinkpad_cmos_command(cmos_cmd); 5743 if (res) 5744 return res; 5745 } 5746 5747 return 0; 5748 } 5749 5750 static struct ibm_struct cmos_driver_data = { 5751 .name = "cmos", 5752 .read = cmos_read, 5753 .write = cmos_write, 5754 }; 5755 5756 /************************************************************************* 5757 * LED subdriver 5758 */ 5759 5760 enum led_access_mode { 5761 TPACPI_LED_NONE = 0, 5762 TPACPI_LED_570, /* 570 */ 5763 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5764 TPACPI_LED_NEW, /* all others */ 5765 }; 5766 5767 enum { /* For TPACPI_LED_OLD */ 5768 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5769 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5770 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5771 }; 5772 5773 static enum led_access_mode led_supported; 5774 5775 static acpi_handle led_handle; 5776 5777 #define TPACPI_LED_NUMLEDS 16 5778 static struct tpacpi_led_classdev *tpacpi_leds; 5779 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5780 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5781 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5782 "tpacpi::power", 5783 "tpacpi:orange:batt", 5784 "tpacpi:green:batt", 5785 "tpacpi::dock_active", 5786 "tpacpi::bay_active", 5787 "tpacpi::dock_batt", 5788 "tpacpi::unknown_led", 5789 "tpacpi::standby", 5790 "tpacpi::dock_status1", 5791 "tpacpi::dock_status2", 5792 "tpacpi::lid_logo_dot", 5793 "tpacpi::unknown_led3", 5794 "tpacpi::thinkvantage", 5795 }; 5796 #define TPACPI_SAFE_LEDS 0x1481U 5797 5798 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5799 { 5800 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5801 return false; 5802 #else 5803 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5804 #endif 5805 } 5806 5807 static int led_get_status(const unsigned int led) 5808 { 5809 int status; 5810 enum led_status_t led_s; 5811 5812 switch (led_supported) { 5813 case TPACPI_LED_570: 5814 if (!acpi_evalf(ec_handle, 5815 &status, "GLED", "dd", 1 << led)) 5816 return -EIO; 5817 led_s = (status == 0) ? 5818 TPACPI_LED_OFF : 5819 ((status == 1) ? 5820 TPACPI_LED_ON : 5821 TPACPI_LED_BLINK); 5822 tpacpi_led_state_cache[led] = led_s; 5823 return led_s; 5824 default: 5825 return -ENXIO; 5826 } 5827 5828 /* not reached */ 5829 } 5830 5831 static int led_set_status(const unsigned int led, 5832 const enum led_status_t ledstatus) 5833 { 5834 /* off, on, blink. Index is led_status_t */ 5835 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5836 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5837 5838 int rc = 0; 5839 5840 switch (led_supported) { 5841 case TPACPI_LED_570: 5842 /* 570 */ 5843 if (unlikely(led > 7)) 5844 return -EINVAL; 5845 if (unlikely(tpacpi_is_led_restricted(led))) 5846 return -EPERM; 5847 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5848 (1 << led), led_sled_arg1[ledstatus])) 5849 return -EIO; 5850 break; 5851 case TPACPI_LED_OLD: 5852 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5853 if (unlikely(led > 7)) 5854 return -EINVAL; 5855 if (unlikely(tpacpi_is_led_restricted(led))) 5856 return -EPERM; 5857 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5858 if (rc >= 0) 5859 rc = ec_write(TPACPI_LED_EC_HLBL, 5860 (ledstatus == TPACPI_LED_BLINK) << led); 5861 if (rc >= 0) 5862 rc = ec_write(TPACPI_LED_EC_HLCL, 5863 (ledstatus != TPACPI_LED_OFF) << led); 5864 break; 5865 case TPACPI_LED_NEW: 5866 /* all others */ 5867 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5868 return -EINVAL; 5869 if (unlikely(tpacpi_is_led_restricted(led))) 5870 return -EPERM; 5871 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5872 led, led_led_arg1[ledstatus])) 5873 return -EIO; 5874 break; 5875 default: 5876 return -ENXIO; 5877 } 5878 5879 if (!rc) 5880 tpacpi_led_state_cache[led] = ledstatus; 5881 5882 return rc; 5883 } 5884 5885 static int led_sysfs_set(struct led_classdev *led_cdev, 5886 enum led_brightness brightness) 5887 { 5888 struct tpacpi_led_classdev *data = container_of(led_cdev, 5889 struct tpacpi_led_classdev, led_classdev); 5890 enum led_status_t new_state; 5891 5892 if (brightness == LED_OFF) 5893 new_state = TPACPI_LED_OFF; 5894 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5895 new_state = TPACPI_LED_ON; 5896 else 5897 new_state = TPACPI_LED_BLINK; 5898 5899 return led_set_status(data->led, new_state); 5900 } 5901 5902 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5903 unsigned long *delay_on, unsigned long *delay_off) 5904 { 5905 struct tpacpi_led_classdev *data = container_of(led_cdev, 5906 struct tpacpi_led_classdev, led_classdev); 5907 5908 /* Can we choose the flash rate? */ 5909 if (*delay_on == 0 && *delay_off == 0) { 5910 /* yes. set them to the hardware blink rate (1 Hz) */ 5911 *delay_on = 500; /* ms */ 5912 *delay_off = 500; /* ms */ 5913 } else if ((*delay_on != 500) || (*delay_off != 500)) 5914 return -EINVAL; 5915 5916 return led_set_status(data->led, TPACPI_LED_BLINK); 5917 } 5918 5919 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5920 { 5921 int rc; 5922 5923 struct tpacpi_led_classdev *data = container_of(led_cdev, 5924 struct tpacpi_led_classdev, led_classdev); 5925 5926 rc = led_get_status(data->led); 5927 5928 if (rc == TPACPI_LED_OFF || rc < 0) 5929 rc = LED_OFF; /* no error handling in led class :( */ 5930 else 5931 rc = LED_FULL; 5932 5933 return rc; 5934 } 5935 5936 static void led_exit(void) 5937 { 5938 unsigned int i; 5939 5940 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5941 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5942 5943 kfree(tpacpi_leds); 5944 } 5945 5946 static int __init tpacpi_init_led(unsigned int led) 5947 { 5948 /* LEDs with no name don't get registered */ 5949 if (!tpacpi_led_names[led]) 5950 return 0; 5951 5952 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5953 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5954 if (led_supported == TPACPI_LED_570) 5955 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5956 5957 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5958 tpacpi_leds[led].led_classdev.flags = LED_RETAIN_AT_SHUTDOWN; 5959 tpacpi_leds[led].led = led; 5960 5961 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5962 } 5963 5964 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5965 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5966 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5967 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5968 5969 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5970 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5971 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5972 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5973 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5974 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5975 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5976 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5977 5978 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5979 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5980 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5981 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5982 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5983 5984 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5985 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5986 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5987 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5988 5989 /* (1) - may have excess leds enabled on MSB */ 5990 5991 /* Defaults (order matters, keep last, don't reorder!) */ 5992 { /* Lenovo */ 5993 .vendor = PCI_VENDOR_ID_LENOVO, 5994 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5995 .quirks = 0x1fffU, 5996 }, 5997 { /* IBM ThinkPads with no EC version string */ 5998 .vendor = PCI_VENDOR_ID_IBM, 5999 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 6000 .quirks = 0x00ffU, 6001 }, 6002 { /* IBM ThinkPads with EC version string */ 6003 .vendor = PCI_VENDOR_ID_IBM, 6004 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 6005 .quirks = 0x00bfU, 6006 }, 6007 }; 6008 6009 static enum led_access_mode __init led_init_detect_mode(void) 6010 { 6011 acpi_status status; 6012 6013 if (tpacpi_is_ibm()) { 6014 /* 570 */ 6015 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 6016 if (ACPI_SUCCESS(status)) 6017 return TPACPI_LED_570; 6018 6019 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 6020 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 6021 if (ACPI_SUCCESS(status)) 6022 return TPACPI_LED_OLD; 6023 } 6024 6025 /* most others */ 6026 status = acpi_get_handle(ec_handle, "LED", &led_handle); 6027 if (ACPI_SUCCESS(status)) 6028 return TPACPI_LED_NEW; 6029 6030 /* R30, R31, and unknown firmwares */ 6031 led_handle = NULL; 6032 return TPACPI_LED_NONE; 6033 } 6034 6035 static int __init led_init(struct ibm_init_struct *iibm) 6036 { 6037 unsigned int i; 6038 int rc; 6039 unsigned long useful_leds; 6040 6041 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 6042 6043 led_supported = led_init_detect_mode(); 6044 6045 if (led_supported != TPACPI_LED_NONE) { 6046 useful_leds = tpacpi_check_quirks(led_useful_qtable, 6047 ARRAY_SIZE(led_useful_qtable)); 6048 6049 if (!useful_leds) { 6050 led_handle = NULL; 6051 led_supported = TPACPI_LED_NONE; 6052 } 6053 } 6054 6055 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 6056 str_supported(led_supported), led_supported); 6057 6058 if (led_supported == TPACPI_LED_NONE) 6059 return -ENODEV; 6060 6061 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 6062 GFP_KERNEL); 6063 if (!tpacpi_leds) { 6064 pr_err("Out of memory for LED data\n"); 6065 return -ENOMEM; 6066 } 6067 6068 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 6069 tpacpi_leds[i].led = -1; 6070 6071 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 6072 rc = tpacpi_init_led(i); 6073 if (rc < 0) { 6074 led_exit(); 6075 return rc; 6076 } 6077 } 6078 } 6079 6080 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 6081 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 6082 #endif 6083 return 0; 6084 } 6085 6086 #define str_led_status(s) \ 6087 ((s) == TPACPI_LED_OFF ? "off" : \ 6088 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 6089 6090 static int led_read(struct seq_file *m) 6091 { 6092 if (!led_supported) { 6093 seq_printf(m, "status:\t\tnot supported\n"); 6094 return 0; 6095 } 6096 seq_printf(m, "status:\t\tsupported\n"); 6097 6098 if (led_supported == TPACPI_LED_570) { 6099 /* 570 */ 6100 int i, status; 6101 for (i = 0; i < 8; i++) { 6102 status = led_get_status(i); 6103 if (status < 0) 6104 return -EIO; 6105 seq_printf(m, "%d:\t\t%s\n", 6106 i, str_led_status(status)); 6107 } 6108 } 6109 6110 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 6111 6112 return 0; 6113 } 6114 6115 static int led_write(char *buf) 6116 { 6117 char *cmd; 6118 int led, rc; 6119 enum led_status_t s; 6120 6121 if (!led_supported) 6122 return -ENODEV; 6123 6124 while ((cmd = strsep(&buf, ","))) { 6125 if (sscanf(cmd, "%d", &led) != 1) 6126 return -EINVAL; 6127 6128 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 6129 return -ENODEV; 6130 6131 if (tpacpi_leds[led].led < 0) 6132 return -ENODEV; 6133 6134 if (strstr(cmd, "off")) { 6135 s = TPACPI_LED_OFF; 6136 } else if (strstr(cmd, "on")) { 6137 s = TPACPI_LED_ON; 6138 } else if (strstr(cmd, "blink")) { 6139 s = TPACPI_LED_BLINK; 6140 } else { 6141 return -EINVAL; 6142 } 6143 6144 rc = led_set_status(led, s); 6145 if (rc < 0) 6146 return rc; 6147 } 6148 6149 return 0; 6150 } 6151 6152 static struct ibm_struct led_driver_data = { 6153 .name = "led", 6154 .read = led_read, 6155 .write = led_write, 6156 .exit = led_exit, 6157 }; 6158 6159 /************************************************************************* 6160 * Beep subdriver 6161 */ 6162 6163 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6164 6165 #define TPACPI_BEEP_Q1 0x0001 6166 6167 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6168 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6169 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6170 }; 6171 6172 static int __init beep_init(struct ibm_init_struct *iibm) 6173 { 6174 unsigned long quirks; 6175 6176 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6177 6178 TPACPI_ACPIHANDLE_INIT(beep); 6179 6180 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6181 str_supported(beep_handle != NULL)); 6182 6183 quirks = tpacpi_check_quirks(beep_quirk_table, 6184 ARRAY_SIZE(beep_quirk_table)); 6185 6186 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6187 6188 return (beep_handle) ? 0 : -ENODEV; 6189 } 6190 6191 static int beep_read(struct seq_file *m) 6192 { 6193 if (!beep_handle) 6194 seq_printf(m, "status:\t\tnot supported\n"); 6195 else { 6196 seq_printf(m, "status:\t\tsupported\n"); 6197 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6198 } 6199 6200 return 0; 6201 } 6202 6203 static int beep_write(char *buf) 6204 { 6205 char *cmd; 6206 int beep_cmd; 6207 6208 if (!beep_handle) 6209 return -ENODEV; 6210 6211 while ((cmd = strsep(&buf, ","))) { 6212 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6213 beep_cmd >= 0 && beep_cmd <= 17) { 6214 /* beep_cmd set */ 6215 } else 6216 return -EINVAL; 6217 if (tp_features.beep_needs_two_args) { 6218 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6219 beep_cmd, 0)) 6220 return -EIO; 6221 } else { 6222 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6223 beep_cmd)) 6224 return -EIO; 6225 } 6226 } 6227 6228 return 0; 6229 } 6230 6231 static struct ibm_struct beep_driver_data = { 6232 .name = "beep", 6233 .read = beep_read, 6234 .write = beep_write, 6235 }; 6236 6237 /************************************************************************* 6238 * Thermal subdriver 6239 */ 6240 6241 enum thermal_access_mode { 6242 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6243 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6244 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6245 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6246 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6247 }; 6248 6249 enum { /* TPACPI_THERMAL_TPEC_* */ 6250 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6251 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6252 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */ 6253 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6254 6255 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6256 }; 6257 6258 6259 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6260 struct ibm_thermal_sensors_struct { 6261 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6262 }; 6263 6264 static enum thermal_access_mode thermal_read_mode; 6265 static bool thermal_use_labels; 6266 6267 /* idx is zero-based */ 6268 static int thermal_get_sensor(int idx, s32 *value) 6269 { 6270 int t; 6271 s8 tmp; 6272 char tmpi[5]; 6273 6274 t = TP_EC_THERMAL_TMP0; 6275 6276 switch (thermal_read_mode) { 6277 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6278 case TPACPI_THERMAL_TPEC_16: 6279 if (idx >= 8 && idx <= 15) { 6280 t = TP_EC_THERMAL_TMP8; 6281 idx -= 8; 6282 } 6283 #endif 6284 fallthrough; 6285 case TPACPI_THERMAL_TPEC_8: 6286 if (idx <= 7) { 6287 if (!acpi_ec_read(t + idx, &tmp)) 6288 return -EIO; 6289 *value = tmp * 1000; 6290 return 0; 6291 } 6292 break; 6293 6294 case TPACPI_THERMAL_ACPI_UPDT: 6295 if (idx <= 7) { 6296 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6297 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6298 return -EIO; 6299 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6300 return -EIO; 6301 *value = (t - 2732) * 100; 6302 return 0; 6303 } 6304 break; 6305 6306 case TPACPI_THERMAL_ACPI_TMP07: 6307 if (idx <= 7) { 6308 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6309 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6310 return -EIO; 6311 if (t > 127 || t < -127) 6312 t = TP_EC_THERMAL_TMP_NA; 6313 *value = t * 1000; 6314 return 0; 6315 } 6316 break; 6317 6318 case TPACPI_THERMAL_NONE: 6319 default: 6320 return -ENOSYS; 6321 } 6322 6323 return -EINVAL; 6324 } 6325 6326 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6327 { 6328 int res, i; 6329 int n; 6330 6331 n = 8; 6332 i = 0; 6333 6334 if (!s) 6335 return -EINVAL; 6336 6337 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6338 n = 16; 6339 6340 for (i = 0 ; i < n; i++) { 6341 res = thermal_get_sensor(i, &s->temp[i]); 6342 if (res) 6343 return res; 6344 } 6345 6346 return n; 6347 } 6348 6349 static void thermal_dump_all_sensors(void) 6350 { 6351 int n, i; 6352 struct ibm_thermal_sensors_struct t; 6353 6354 n = thermal_get_sensors(&t); 6355 if (n <= 0) 6356 return; 6357 6358 pr_notice("temperatures (Celsius):"); 6359 6360 for (i = 0; i < n; i++) { 6361 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6362 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6363 else 6364 pr_cont(" N/A"); 6365 } 6366 6367 pr_cont("\n"); 6368 } 6369 6370 /* sysfs temp##_input -------------------------------------------------- */ 6371 6372 static ssize_t thermal_temp_input_show(struct device *dev, 6373 struct device_attribute *attr, 6374 char *buf) 6375 { 6376 struct sensor_device_attribute *sensor_attr = 6377 to_sensor_dev_attr(attr); 6378 int idx = sensor_attr->index; 6379 s32 value; 6380 int res; 6381 6382 res = thermal_get_sensor(idx, &value); 6383 if (res) 6384 return res; 6385 if (value == TPACPI_THERMAL_SENSOR_NA) 6386 return -ENXIO; 6387 6388 return sysfs_emit(buf, "%d\n", value); 6389 } 6390 6391 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6392 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6393 thermal_temp_input_show, NULL, _idxB) 6394 6395 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6396 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6397 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6398 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6399 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6400 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6401 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6402 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6403 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6404 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6405 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6406 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6407 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6408 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6409 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6410 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6411 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6412 }; 6413 6414 #define THERMAL_ATTRS(X) \ 6415 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6416 6417 static struct attribute *thermal_temp_input_attr[] = { 6418 THERMAL_ATTRS(0), 6419 THERMAL_ATTRS(1), 6420 THERMAL_ATTRS(2), 6421 THERMAL_ATTRS(3), 6422 THERMAL_ATTRS(4), 6423 THERMAL_ATTRS(5), 6424 THERMAL_ATTRS(6), 6425 THERMAL_ATTRS(7), 6426 THERMAL_ATTRS(8), 6427 THERMAL_ATTRS(9), 6428 THERMAL_ATTRS(10), 6429 THERMAL_ATTRS(11), 6430 THERMAL_ATTRS(12), 6431 THERMAL_ATTRS(13), 6432 THERMAL_ATTRS(14), 6433 THERMAL_ATTRS(15), 6434 NULL 6435 }; 6436 6437 static umode_t thermal_attr_is_visible(struct kobject *kobj, 6438 struct attribute *attr, int n) 6439 { 6440 if (thermal_read_mode == TPACPI_THERMAL_NONE) 6441 return 0; 6442 6443 if (attr == THERMAL_ATTRS(8) || attr == THERMAL_ATTRS(9) || 6444 attr == THERMAL_ATTRS(10) || attr == THERMAL_ATTRS(11) || 6445 attr == THERMAL_ATTRS(12) || attr == THERMAL_ATTRS(13) || 6446 attr == THERMAL_ATTRS(14) || attr == THERMAL_ATTRS(15)) { 6447 if (thermal_read_mode != TPACPI_THERMAL_TPEC_16) 6448 return 0; 6449 } 6450 6451 return attr->mode; 6452 } 6453 6454 static const struct attribute_group thermal_attr_group = { 6455 .is_visible = thermal_attr_is_visible, 6456 .attrs = thermal_temp_input_attr, 6457 }; 6458 6459 #undef THERMAL_SENSOR_ATTR_TEMP 6460 #undef THERMAL_ATTRS 6461 6462 static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6463 { 6464 return sysfs_emit(buf, "CPU\n"); 6465 } 6466 static DEVICE_ATTR_RO(temp1_label); 6467 6468 static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6469 { 6470 return sysfs_emit(buf, "GPU\n"); 6471 } 6472 static DEVICE_ATTR_RO(temp2_label); 6473 6474 static struct attribute *temp_label_attributes[] = { 6475 &dev_attr_temp1_label.attr, 6476 &dev_attr_temp2_label.attr, 6477 NULL 6478 }; 6479 6480 static umode_t temp_label_attr_is_visible(struct kobject *kobj, 6481 struct attribute *attr, int n) 6482 { 6483 return thermal_use_labels ? attr->mode : 0; 6484 } 6485 6486 static const struct attribute_group temp_label_attr_group = { 6487 .is_visible = temp_label_attr_is_visible, 6488 .attrs = temp_label_attributes, 6489 }; 6490 6491 /* --------------------------------------------------------------------- */ 6492 6493 static int __init thermal_init(struct ibm_init_struct *iibm) 6494 { 6495 u8 t, ta1, ta2, ver = 0; 6496 int i; 6497 int acpi_tmp7; 6498 6499 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6500 6501 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6502 6503 if (thinkpad_id.ec_model) { 6504 /* 6505 * Direct EC access mode: sensors at registers 6506 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6507 * non-implemented, thermal sensors return 0x80 when 6508 * not available 6509 * The above rule is unfortunately flawed. This has been seen with 6510 * 0xC2 (power supply ID) causing thermal control problems. 6511 * The EC version can be determined by offset 0xEF and at least for 6512 * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7 6513 * are not thermal registers. 6514 */ 6515 if (!acpi_ec_read(TP_EC_FUNCREV, &ver)) 6516 pr_warn("Thinkpad ACPI EC unable to access EC version\n"); 6517 6518 ta1 = ta2 = 0; 6519 for (i = 0; i < 8; i++) { 6520 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6521 ta1 |= t; 6522 } else { 6523 ta1 = 0; 6524 break; 6525 } 6526 if (ver < 3) { 6527 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6528 ta2 |= t; 6529 } else { 6530 ta1 = 0; 6531 break; 6532 } 6533 } 6534 } 6535 if (ta1 == 0) { 6536 /* This is sheer paranoia, but we handle it anyway */ 6537 if (acpi_tmp7) { 6538 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6539 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6540 } else { 6541 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6542 thermal_read_mode = TPACPI_THERMAL_NONE; 6543 } 6544 } else { 6545 if (ver >= 3) { 6546 thermal_read_mode = TPACPI_THERMAL_TPEC_8; 6547 thermal_use_labels = true; 6548 } else { 6549 thermal_read_mode = 6550 (ta2 != 0) ? 6551 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6552 } 6553 } 6554 } else if (acpi_tmp7) { 6555 if (tpacpi_is_ibm() && 6556 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6557 /* 600e/x, 770e, 770x */ 6558 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6559 } else { 6560 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6561 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6562 } 6563 } else { 6564 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6565 thermal_read_mode = TPACPI_THERMAL_NONE; 6566 } 6567 6568 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6569 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6570 thermal_read_mode); 6571 6572 return thermal_read_mode != TPACPI_THERMAL_NONE ? 0 : -ENODEV; 6573 } 6574 6575 static int thermal_read(struct seq_file *m) 6576 { 6577 int n, i; 6578 struct ibm_thermal_sensors_struct t; 6579 6580 n = thermal_get_sensors(&t); 6581 if (unlikely(n < 0)) 6582 return n; 6583 6584 seq_printf(m, "temperatures:\t"); 6585 6586 if (n > 0) { 6587 for (i = 0; i < (n - 1); i++) 6588 seq_printf(m, "%d ", t.temp[i] / 1000); 6589 seq_printf(m, "%d\n", t.temp[i] / 1000); 6590 } else 6591 seq_printf(m, "not supported\n"); 6592 6593 return 0; 6594 } 6595 6596 static struct ibm_struct thermal_driver_data = { 6597 .name = "thermal", 6598 .read = thermal_read, 6599 }; 6600 6601 /************************************************************************* 6602 * Backlight/brightness subdriver 6603 */ 6604 6605 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6606 6607 /* 6608 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6609 * CMOS NVRAM byte 0x5E, bits 0-3. 6610 * 6611 * EC HBRV (0x31) has the following layout 6612 * Bit 7: unknown function 6613 * Bit 6: unknown function 6614 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6615 * Bit 4: must be set to zero to avoid problems 6616 * Bit 3-0: backlight brightness level 6617 * 6618 * brightness_get_raw returns status data in the HBRV layout 6619 * 6620 * WARNING: The X61 has been verified to use HBRV for something else, so 6621 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6622 * testing on the very early *60 Lenovo models... 6623 */ 6624 6625 enum { 6626 TP_EC_BACKLIGHT = 0x31, 6627 6628 /* TP_EC_BACKLIGHT bitmasks */ 6629 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6630 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6631 TP_EC_BACKLIGHT_MAPSW = 0x20, 6632 }; 6633 6634 enum tpacpi_brightness_access_mode { 6635 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6636 TPACPI_BRGHT_MODE_EC, /* EC control */ 6637 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6638 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6639 TPACPI_BRGHT_MODE_MAX 6640 }; 6641 6642 static struct backlight_device *ibm_backlight_device; 6643 6644 static enum tpacpi_brightness_access_mode brightness_mode = 6645 TPACPI_BRGHT_MODE_MAX; 6646 6647 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6648 6649 static struct mutex brightness_mutex; 6650 6651 /* NVRAM brightness access, 6652 * call with brightness_mutex held! */ 6653 static unsigned int tpacpi_brightness_nvram_get(void) 6654 { 6655 u8 lnvram; 6656 6657 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6658 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6659 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6660 lnvram &= bright_maxlvl; 6661 6662 return lnvram; 6663 } 6664 6665 static void tpacpi_brightness_checkpoint_nvram(void) 6666 { 6667 u8 lec = 0; 6668 u8 b_nvram; 6669 6670 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6671 return; 6672 6673 vdbg_printk(TPACPI_DBG_BRGHT, 6674 "trying to checkpoint backlight level to NVRAM...\n"); 6675 6676 if (mutex_lock_killable(&brightness_mutex) < 0) 6677 return; 6678 6679 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6680 goto unlock; 6681 lec &= TP_EC_BACKLIGHT_LVLMSK; 6682 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6683 6684 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6685 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6686 /* NVRAM needs update */ 6687 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6688 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6689 b_nvram |= lec; 6690 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6691 dbg_printk(TPACPI_DBG_BRGHT, 6692 "updated NVRAM backlight level to %u (0x%02x)\n", 6693 (unsigned int) lec, (unsigned int) b_nvram); 6694 } else 6695 vdbg_printk(TPACPI_DBG_BRGHT, 6696 "NVRAM backlight level already is %u (0x%02x)\n", 6697 (unsigned int) lec, (unsigned int) b_nvram); 6698 6699 unlock: 6700 mutex_unlock(&brightness_mutex); 6701 } 6702 6703 6704 /* call with brightness_mutex held! */ 6705 static int tpacpi_brightness_get_raw(int *status) 6706 { 6707 u8 lec = 0; 6708 6709 switch (brightness_mode) { 6710 case TPACPI_BRGHT_MODE_UCMS_STEP: 6711 *status = tpacpi_brightness_nvram_get(); 6712 return 0; 6713 case TPACPI_BRGHT_MODE_EC: 6714 case TPACPI_BRGHT_MODE_ECNVRAM: 6715 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6716 return -EIO; 6717 *status = lec; 6718 return 0; 6719 default: 6720 return -ENXIO; 6721 } 6722 } 6723 6724 /* call with brightness_mutex held! */ 6725 /* do NOT call with illegal backlight level value */ 6726 static int tpacpi_brightness_set_ec(unsigned int value) 6727 { 6728 u8 lec = 0; 6729 6730 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6731 return -EIO; 6732 6733 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6734 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6735 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6736 return -EIO; 6737 6738 return 0; 6739 } 6740 6741 /* call with brightness_mutex held! */ 6742 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6743 { 6744 int cmos_cmd, inc; 6745 unsigned int current_value, i; 6746 6747 current_value = tpacpi_brightness_nvram_get(); 6748 6749 if (value == current_value) 6750 return 0; 6751 6752 cmos_cmd = (value > current_value) ? 6753 TP_CMOS_BRIGHTNESS_UP : 6754 TP_CMOS_BRIGHTNESS_DOWN; 6755 inc = (value > current_value) ? 1 : -1; 6756 6757 for (i = current_value; i != value; i += inc) 6758 if (issue_thinkpad_cmos_command(cmos_cmd)) 6759 return -EIO; 6760 6761 return 0; 6762 } 6763 6764 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6765 static int brightness_set(unsigned int value) 6766 { 6767 int res; 6768 6769 if (value > bright_maxlvl) 6770 return -EINVAL; 6771 6772 vdbg_printk(TPACPI_DBG_BRGHT, 6773 "set backlight level to %d\n", value); 6774 6775 res = mutex_lock_killable(&brightness_mutex); 6776 if (res < 0) 6777 return res; 6778 6779 switch (brightness_mode) { 6780 case TPACPI_BRGHT_MODE_EC: 6781 case TPACPI_BRGHT_MODE_ECNVRAM: 6782 res = tpacpi_brightness_set_ec(value); 6783 break; 6784 case TPACPI_BRGHT_MODE_UCMS_STEP: 6785 res = tpacpi_brightness_set_ucmsstep(value); 6786 break; 6787 default: 6788 res = -ENXIO; 6789 } 6790 6791 mutex_unlock(&brightness_mutex); 6792 return res; 6793 } 6794 6795 /* sysfs backlight class ----------------------------------------------- */ 6796 6797 static int brightness_update_status(struct backlight_device *bd) 6798 { 6799 unsigned int level = 6800 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6801 bd->props.power == FB_BLANK_UNBLANK) ? 6802 bd->props.brightness : 0; 6803 6804 dbg_printk(TPACPI_DBG_BRGHT, 6805 "backlight: attempt to set level to %d\n", 6806 level); 6807 6808 /* it is the backlight class's job (caller) to handle 6809 * EINTR and other errors properly */ 6810 return brightness_set(level); 6811 } 6812 6813 static int brightness_get(struct backlight_device *bd) 6814 { 6815 int status, res; 6816 6817 res = mutex_lock_killable(&brightness_mutex); 6818 if (res < 0) 6819 return 0; 6820 6821 res = tpacpi_brightness_get_raw(&status); 6822 6823 mutex_unlock(&brightness_mutex); 6824 6825 if (res < 0) 6826 return 0; 6827 6828 return status & TP_EC_BACKLIGHT_LVLMSK; 6829 } 6830 6831 static void tpacpi_brightness_notify_change(void) 6832 { 6833 backlight_force_update(ibm_backlight_device, 6834 BACKLIGHT_UPDATE_HOTKEY); 6835 } 6836 6837 static const struct backlight_ops ibm_backlight_data = { 6838 .get_brightness = brightness_get, 6839 .update_status = brightness_update_status, 6840 }; 6841 6842 /* --------------------------------------------------------------------- */ 6843 6844 /* 6845 * Call _BCL method of video device. On some ThinkPads this will 6846 * switch the firmware to the ACPI brightness control mode. 6847 */ 6848 6849 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6850 { 6851 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6852 union acpi_object *obj; 6853 struct acpi_device *device, *child; 6854 int rc; 6855 6856 device = acpi_fetch_acpi_dev(handle); 6857 if (!device) 6858 return 0; 6859 6860 rc = 0; 6861 list_for_each_entry(child, &device->children, node) { 6862 acpi_status status = acpi_evaluate_object(child->handle, "_BCL", 6863 NULL, &buffer); 6864 if (ACPI_FAILURE(status)) { 6865 buffer.length = ACPI_ALLOCATE_BUFFER; 6866 continue; 6867 } 6868 6869 obj = (union acpi_object *)buffer.pointer; 6870 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 6871 pr_err("Unknown _BCL data, please report this to %s\n", 6872 TPACPI_MAIL); 6873 rc = 0; 6874 } else { 6875 rc = obj->package.count; 6876 } 6877 break; 6878 } 6879 6880 kfree(buffer.pointer); 6881 return rc; 6882 } 6883 6884 6885 /* 6886 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6887 */ 6888 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6889 { 6890 acpi_handle video_device; 6891 int bcl_levels = 0; 6892 6893 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6894 if (video_device) 6895 bcl_levels = tpacpi_query_bcl_levels(video_device); 6896 6897 tp_features.bright_acpimode = (bcl_levels > 0); 6898 6899 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6900 } 6901 6902 /* 6903 * These are only useful for models that have only one possibility 6904 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6905 * these quirks. 6906 */ 6907 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6908 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6909 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6910 6911 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6912 /* Models with ATI GPUs known to require ECNVRAM mode */ 6913 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6914 6915 /* Models with ATI GPUs that can use ECNVRAM */ 6916 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6917 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6918 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6919 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6920 6921 /* Models with Intel Extreme Graphics 2 */ 6922 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6923 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6924 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6925 6926 /* Models with Intel GMA900 */ 6927 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6928 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6929 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6930 }; 6931 6932 /* 6933 * Returns < 0 for error, otherwise sets tp_features.bright_* 6934 * and bright_maxlvl. 6935 */ 6936 static void __init tpacpi_detect_brightness_capabilities(void) 6937 { 6938 unsigned int b; 6939 6940 vdbg_printk(TPACPI_DBG_INIT, 6941 "detecting firmware brightness interface capabilities\n"); 6942 6943 /* we could run a quirks check here (same table used by 6944 * brightness_init) if needed */ 6945 6946 /* 6947 * We always attempt to detect acpi support, so as to switch 6948 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6949 * going to publish a backlight interface 6950 */ 6951 b = tpacpi_check_std_acpi_brightness_support(); 6952 switch (b) { 6953 case 16: 6954 bright_maxlvl = 15; 6955 break; 6956 case 8: 6957 case 0: 6958 bright_maxlvl = 7; 6959 break; 6960 default: 6961 tp_features.bright_unkfw = 1; 6962 bright_maxlvl = b - 1; 6963 } 6964 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6965 } 6966 6967 static int __init brightness_init(struct ibm_init_struct *iibm) 6968 { 6969 struct backlight_properties props; 6970 int b; 6971 unsigned long quirks; 6972 6973 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6974 6975 mutex_init(&brightness_mutex); 6976 6977 quirks = tpacpi_check_quirks(brightness_quirk_table, 6978 ARRAY_SIZE(brightness_quirk_table)); 6979 6980 /* tpacpi_detect_brightness_capabilities() must have run already */ 6981 6982 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6983 if (tp_features.bright_unkfw) 6984 return -ENODEV; 6985 6986 if (!brightness_enable) { 6987 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6988 "brightness support disabled by module parameter\n"); 6989 return -ENODEV; 6990 } 6991 6992 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6993 if (brightness_enable > 1) { 6994 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6995 return -ENODEV; 6996 } else if (brightness_enable == 1) { 6997 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6998 return -ENODEV; 6999 } 7000 } else if (!tp_features.bright_acpimode) { 7001 pr_notice("ACPI backlight interface not available\n"); 7002 return -ENODEV; 7003 } 7004 7005 pr_notice("ACPI native brightness control enabled\n"); 7006 7007 /* 7008 * Check for module parameter bogosity, note that we 7009 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 7010 * able to detect "unspecified" 7011 */ 7012 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 7013 return -EINVAL; 7014 7015 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 7016 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 7017 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 7018 if (quirks & TPACPI_BRGHT_Q_EC) 7019 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 7020 else 7021 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 7022 7023 dbg_printk(TPACPI_DBG_BRGHT, 7024 "driver auto-selected brightness_mode=%d\n", 7025 brightness_mode); 7026 } 7027 7028 /* Safety */ 7029 if (!tpacpi_is_ibm() && 7030 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 7031 brightness_mode == TPACPI_BRGHT_MODE_EC)) 7032 return -EINVAL; 7033 7034 if (tpacpi_brightness_get_raw(&b) < 0) 7035 return -ENODEV; 7036 7037 memset(&props, 0, sizeof(struct backlight_properties)); 7038 props.type = BACKLIGHT_PLATFORM; 7039 props.max_brightness = bright_maxlvl; 7040 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 7041 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 7042 NULL, NULL, 7043 &ibm_backlight_data, 7044 &props); 7045 if (IS_ERR(ibm_backlight_device)) { 7046 int rc = PTR_ERR(ibm_backlight_device); 7047 ibm_backlight_device = NULL; 7048 pr_err("Could not register backlight device\n"); 7049 return rc; 7050 } 7051 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7052 "brightness is supported\n"); 7053 7054 if (quirks & TPACPI_BRGHT_Q_ASK) { 7055 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 7056 brightness_mode); 7057 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 7058 TPACPI_MAIL); 7059 } 7060 7061 /* Added by mistake in early 2007. Probably useless, but it could 7062 * be working around some unknown firmware problem where the value 7063 * read at startup doesn't match the real hardware state... so leave 7064 * it in place just in case */ 7065 backlight_update_status(ibm_backlight_device); 7066 7067 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7068 "brightness: registering brightness hotkeys as change notification\n"); 7069 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7070 | TP_ACPI_HKEY_BRGHTUP_MASK 7071 | TP_ACPI_HKEY_BRGHTDWN_MASK); 7072 return 0; 7073 } 7074 7075 static void brightness_suspend(void) 7076 { 7077 tpacpi_brightness_checkpoint_nvram(); 7078 } 7079 7080 static void brightness_shutdown(void) 7081 { 7082 tpacpi_brightness_checkpoint_nvram(); 7083 } 7084 7085 static void brightness_exit(void) 7086 { 7087 if (ibm_backlight_device) { 7088 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 7089 "calling backlight_device_unregister()\n"); 7090 backlight_device_unregister(ibm_backlight_device); 7091 } 7092 7093 tpacpi_brightness_checkpoint_nvram(); 7094 } 7095 7096 static int brightness_read(struct seq_file *m) 7097 { 7098 int level; 7099 7100 level = brightness_get(NULL); 7101 if (level < 0) { 7102 seq_printf(m, "level:\t\tunreadable\n"); 7103 } else { 7104 seq_printf(m, "level:\t\t%d\n", level); 7105 seq_printf(m, "commands:\tup, down\n"); 7106 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7107 bright_maxlvl); 7108 } 7109 7110 return 0; 7111 } 7112 7113 static int brightness_write(char *buf) 7114 { 7115 int level; 7116 int rc; 7117 char *cmd; 7118 7119 level = brightness_get(NULL); 7120 if (level < 0) 7121 return level; 7122 7123 while ((cmd = strsep(&buf, ","))) { 7124 if (strlencmp(cmd, "up") == 0) { 7125 if (level < bright_maxlvl) 7126 level++; 7127 } else if (strlencmp(cmd, "down") == 0) { 7128 if (level > 0) 7129 level--; 7130 } else if (sscanf(cmd, "level %d", &level) == 1 && 7131 level >= 0 && level <= bright_maxlvl) { 7132 /* new level set */ 7133 } else 7134 return -EINVAL; 7135 } 7136 7137 tpacpi_disclose_usertask("procfs brightness", 7138 "set level to %d\n", level); 7139 7140 /* 7141 * Now we know what the final level should be, so we try to set it. 7142 * Doing it this way makes the syscall restartable in case of EINTR 7143 */ 7144 rc = brightness_set(level); 7145 if (!rc && ibm_backlight_device) 7146 backlight_force_update(ibm_backlight_device, 7147 BACKLIGHT_UPDATE_SYSFS); 7148 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7149 } 7150 7151 static struct ibm_struct brightness_driver_data = { 7152 .name = "brightness", 7153 .read = brightness_read, 7154 .write = brightness_write, 7155 .exit = brightness_exit, 7156 .suspend = brightness_suspend, 7157 .shutdown = brightness_shutdown, 7158 }; 7159 7160 /************************************************************************* 7161 * Volume subdriver 7162 */ 7163 7164 /* 7165 * IBM ThinkPads have a simple volume controller with MUTE gating. 7166 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7167 * 7168 * Since the *61 series (and probably also the later *60 series), Lenovo 7169 * ThinkPads only implement the MUTE gate. 7170 * 7171 * EC register 0x30 7172 * Bit 6: MUTE (1 mutes sound) 7173 * Bit 3-0: Volume 7174 * Other bits should be zero as far as we know. 7175 * 7176 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7177 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7178 * such as bit 7 which is used to detect repeated presses of MUTE, 7179 * and we leave them unchanged. 7180 * 7181 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7182 * in response to user input. Unfortunately, this rarely works well. 7183 * The laptop changes the state of its internal MUTE gate and, on some 7184 * models, sends KEY_MUTE, causing any user code that responds to the 7185 * mute button to get confused. The hardware MUTE gate is also 7186 * unnecessary, since user code can handle the mute button without 7187 * kernel or EC help. 7188 * 7189 * To avoid confusing userspace, we simply disable all EC-based mute 7190 * and volume controls when possible. 7191 */ 7192 7193 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7194 7195 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7196 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7197 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7198 7199 #if SNDRV_CARDS <= 32 7200 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7201 #else 7202 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7203 #endif 7204 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7205 static char *alsa_id = "ThinkPadEC"; 7206 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7207 7208 struct tpacpi_alsa_data { 7209 struct snd_card *card; 7210 struct snd_ctl_elem_id *ctl_mute_id; 7211 struct snd_ctl_elem_id *ctl_vol_id; 7212 }; 7213 7214 static struct snd_card *alsa_card; 7215 7216 enum { 7217 TP_EC_AUDIO = 0x30, 7218 7219 /* TP_EC_AUDIO bits */ 7220 TP_EC_AUDIO_MUTESW = 6, 7221 7222 /* TP_EC_AUDIO bitmasks */ 7223 TP_EC_AUDIO_LVL_MSK = 0x0F, 7224 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7225 7226 /* Maximum volume */ 7227 TP_EC_VOLUME_MAX = 14, 7228 }; 7229 7230 enum tpacpi_volume_access_mode { 7231 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7232 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7233 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7234 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7235 TPACPI_VOL_MODE_MAX 7236 }; 7237 7238 enum tpacpi_volume_capabilities { 7239 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7240 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7241 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7242 TPACPI_VOL_CAP_MAX 7243 }; 7244 7245 enum tpacpi_mute_btn_mode { 7246 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7247 /* We don't know what mode 1 is. */ 7248 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7249 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7250 }; 7251 7252 static enum tpacpi_volume_access_mode volume_mode = 7253 TPACPI_VOL_MODE_MAX; 7254 7255 static enum tpacpi_volume_capabilities volume_capabilities; 7256 static bool volume_control_allowed; 7257 static bool software_mute_requested = true; 7258 static bool software_mute_active; 7259 static int software_mute_orig_mode; 7260 7261 /* 7262 * Used to syncronize writers to TP_EC_AUDIO and 7263 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7264 */ 7265 static struct mutex volume_mutex; 7266 7267 static void tpacpi_volume_checkpoint_nvram(void) 7268 { 7269 u8 lec = 0; 7270 u8 b_nvram; 7271 u8 ec_mask; 7272 7273 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7274 return; 7275 if (!volume_control_allowed) 7276 return; 7277 if (software_mute_active) 7278 return; 7279 7280 vdbg_printk(TPACPI_DBG_MIXER, 7281 "trying to checkpoint mixer state to NVRAM...\n"); 7282 7283 if (tp_features.mixer_no_level_control) 7284 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7285 else 7286 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7287 7288 if (mutex_lock_killable(&volume_mutex) < 0) 7289 return; 7290 7291 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7292 goto unlock; 7293 lec &= ec_mask; 7294 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7295 7296 if (lec != (b_nvram & ec_mask)) { 7297 /* NVRAM needs update */ 7298 b_nvram &= ~ec_mask; 7299 b_nvram |= lec; 7300 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7301 dbg_printk(TPACPI_DBG_MIXER, 7302 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7303 (unsigned int) lec, (unsigned int) b_nvram); 7304 } else { 7305 vdbg_printk(TPACPI_DBG_MIXER, 7306 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7307 (unsigned int) lec, (unsigned int) b_nvram); 7308 } 7309 7310 unlock: 7311 mutex_unlock(&volume_mutex); 7312 } 7313 7314 static int volume_get_status_ec(u8 *status) 7315 { 7316 u8 s; 7317 7318 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7319 return -EIO; 7320 7321 *status = s; 7322 7323 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7324 7325 return 0; 7326 } 7327 7328 static int volume_get_status(u8 *status) 7329 { 7330 return volume_get_status_ec(status); 7331 } 7332 7333 static int volume_set_status_ec(const u8 status) 7334 { 7335 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7336 return -EIO; 7337 7338 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7339 7340 /* 7341 * On X200s, and possibly on others, it can take a while for 7342 * reads to become correct. 7343 */ 7344 msleep(1); 7345 7346 return 0; 7347 } 7348 7349 static int volume_set_status(const u8 status) 7350 { 7351 return volume_set_status_ec(status); 7352 } 7353 7354 /* returns < 0 on error, 0 on no change, 1 on change */ 7355 static int __volume_set_mute_ec(const bool mute) 7356 { 7357 int rc; 7358 u8 s, n; 7359 7360 if (mutex_lock_killable(&volume_mutex) < 0) 7361 return -EINTR; 7362 7363 rc = volume_get_status_ec(&s); 7364 if (rc) 7365 goto unlock; 7366 7367 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7368 s & ~TP_EC_AUDIO_MUTESW_MSK; 7369 7370 if (n != s) { 7371 rc = volume_set_status_ec(n); 7372 if (!rc) 7373 rc = 1; 7374 } 7375 7376 unlock: 7377 mutex_unlock(&volume_mutex); 7378 return rc; 7379 } 7380 7381 static int volume_alsa_set_mute(const bool mute) 7382 { 7383 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7384 (mute) ? "" : "un"); 7385 return __volume_set_mute_ec(mute); 7386 } 7387 7388 static int volume_set_mute(const bool mute) 7389 { 7390 int rc; 7391 7392 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7393 (mute) ? "" : "un"); 7394 7395 rc = __volume_set_mute_ec(mute); 7396 return (rc < 0) ? rc : 0; 7397 } 7398 7399 /* returns < 0 on error, 0 on no change, 1 on change */ 7400 static int __volume_set_volume_ec(const u8 vol) 7401 { 7402 int rc; 7403 u8 s, n; 7404 7405 if (vol > TP_EC_VOLUME_MAX) 7406 return -EINVAL; 7407 7408 if (mutex_lock_killable(&volume_mutex) < 0) 7409 return -EINTR; 7410 7411 rc = volume_get_status_ec(&s); 7412 if (rc) 7413 goto unlock; 7414 7415 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7416 7417 if (n != s) { 7418 rc = volume_set_status_ec(n); 7419 if (!rc) 7420 rc = 1; 7421 } 7422 7423 unlock: 7424 mutex_unlock(&volume_mutex); 7425 return rc; 7426 } 7427 7428 static int volume_set_software_mute(bool startup) 7429 { 7430 int result; 7431 7432 if (!tpacpi_is_lenovo()) 7433 return -ENODEV; 7434 7435 if (startup) { 7436 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7437 "HAUM", "qd")) 7438 return -EIO; 7439 7440 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7441 "Initial HAUM setting was %d\n", 7442 software_mute_orig_mode); 7443 } 7444 7445 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7446 (int)TP_EC_MUTE_BTN_NONE)) 7447 return -EIO; 7448 7449 if (result != TP_EC_MUTE_BTN_NONE) 7450 pr_warn("Unexpected SAUM result %d\n", 7451 result); 7452 7453 /* 7454 * In software mute mode, the standard codec controls take 7455 * precendence, so we unmute the ThinkPad HW switch at 7456 * startup. Just on case there are SAUM-capable ThinkPads 7457 * with level controls, set max HW volume as well. 7458 */ 7459 if (tp_features.mixer_no_level_control) 7460 result = volume_set_mute(false); 7461 else 7462 result = volume_set_status(TP_EC_VOLUME_MAX); 7463 7464 if (result != 0) 7465 pr_warn("Failed to unmute the HW mute switch\n"); 7466 7467 return 0; 7468 } 7469 7470 static void volume_exit_software_mute(void) 7471 { 7472 int r; 7473 7474 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7475 || r != software_mute_orig_mode) 7476 pr_warn("Failed to restore mute mode\n"); 7477 } 7478 7479 static int volume_alsa_set_volume(const u8 vol) 7480 { 7481 dbg_printk(TPACPI_DBG_MIXER, 7482 "ALSA: trying to set volume level to %hu\n", vol); 7483 return __volume_set_volume_ec(vol); 7484 } 7485 7486 static void volume_alsa_notify_change(void) 7487 { 7488 struct tpacpi_alsa_data *d; 7489 7490 if (alsa_card && alsa_card->private_data) { 7491 d = alsa_card->private_data; 7492 if (d->ctl_mute_id) 7493 snd_ctl_notify(alsa_card, 7494 SNDRV_CTL_EVENT_MASK_VALUE, 7495 d->ctl_mute_id); 7496 if (d->ctl_vol_id) 7497 snd_ctl_notify(alsa_card, 7498 SNDRV_CTL_EVENT_MASK_VALUE, 7499 d->ctl_vol_id); 7500 } 7501 } 7502 7503 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7504 struct snd_ctl_elem_info *uinfo) 7505 { 7506 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7507 uinfo->count = 1; 7508 uinfo->value.integer.min = 0; 7509 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7510 return 0; 7511 } 7512 7513 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7514 struct snd_ctl_elem_value *ucontrol) 7515 { 7516 u8 s; 7517 int rc; 7518 7519 rc = volume_get_status(&s); 7520 if (rc < 0) 7521 return rc; 7522 7523 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7524 return 0; 7525 } 7526 7527 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7528 struct snd_ctl_elem_value *ucontrol) 7529 { 7530 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7531 ucontrol->value.integer.value[0]); 7532 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7533 } 7534 7535 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7536 7537 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7538 struct snd_ctl_elem_value *ucontrol) 7539 { 7540 u8 s; 7541 int rc; 7542 7543 rc = volume_get_status(&s); 7544 if (rc < 0) 7545 return rc; 7546 7547 ucontrol->value.integer.value[0] = 7548 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7549 return 0; 7550 } 7551 7552 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7553 struct snd_ctl_elem_value *ucontrol) 7554 { 7555 tpacpi_disclose_usertask("ALSA", "%smute\n", 7556 ucontrol->value.integer.value[0] ? 7557 "un" : ""); 7558 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7559 } 7560 7561 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7562 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7563 .name = "Console Playback Volume", 7564 .index = 0, 7565 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7566 .info = volume_alsa_vol_info, 7567 .get = volume_alsa_vol_get, 7568 }; 7569 7570 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7571 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7572 .name = "Console Playback Switch", 7573 .index = 0, 7574 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7575 .info = volume_alsa_mute_info, 7576 .get = volume_alsa_mute_get, 7577 }; 7578 7579 static void volume_suspend(void) 7580 { 7581 tpacpi_volume_checkpoint_nvram(); 7582 } 7583 7584 static void volume_resume(void) 7585 { 7586 if (software_mute_active) { 7587 if (volume_set_software_mute(false) < 0) 7588 pr_warn("Failed to restore software mute\n"); 7589 } else { 7590 volume_alsa_notify_change(); 7591 } 7592 } 7593 7594 static void volume_shutdown(void) 7595 { 7596 tpacpi_volume_checkpoint_nvram(); 7597 } 7598 7599 static void volume_exit(void) 7600 { 7601 if (alsa_card) { 7602 snd_card_free(alsa_card); 7603 alsa_card = NULL; 7604 } 7605 7606 tpacpi_volume_checkpoint_nvram(); 7607 7608 if (software_mute_active) 7609 volume_exit_software_mute(); 7610 } 7611 7612 static int __init volume_create_alsa_mixer(void) 7613 { 7614 struct snd_card *card; 7615 struct tpacpi_alsa_data *data; 7616 struct snd_kcontrol *ctl_vol; 7617 struct snd_kcontrol *ctl_mute; 7618 int rc; 7619 7620 rc = snd_card_new(&tpacpi_pdev->dev, 7621 alsa_index, alsa_id, THIS_MODULE, 7622 sizeof(struct tpacpi_alsa_data), &card); 7623 if (rc < 0 || !card) { 7624 pr_err("Failed to create ALSA card structures: %d\n", rc); 7625 return -ENODEV; 7626 } 7627 7628 BUG_ON(!card->private_data); 7629 data = card->private_data; 7630 data->card = card; 7631 7632 strlcpy(card->driver, TPACPI_ALSA_DRVNAME, 7633 sizeof(card->driver)); 7634 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7635 sizeof(card->shortname)); 7636 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7637 (thinkpad_id.ec_version_str) ? 7638 thinkpad_id.ec_version_str : "(unknown)"); 7639 snprintf(card->longname, sizeof(card->longname), 7640 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7641 (thinkpad_id.ec_version_str) ? 7642 thinkpad_id.ec_version_str : "unknown"); 7643 7644 if (volume_control_allowed) { 7645 volume_alsa_control_vol.put = volume_alsa_vol_put; 7646 volume_alsa_control_vol.access = 7647 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7648 7649 volume_alsa_control_mute.put = volume_alsa_mute_put; 7650 volume_alsa_control_mute.access = 7651 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7652 } 7653 7654 if (!tp_features.mixer_no_level_control) { 7655 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7656 rc = snd_ctl_add(card, ctl_vol); 7657 if (rc < 0) { 7658 pr_err("Failed to create ALSA volume control: %d\n", 7659 rc); 7660 goto err_exit; 7661 } 7662 data->ctl_vol_id = &ctl_vol->id; 7663 } 7664 7665 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7666 rc = snd_ctl_add(card, ctl_mute); 7667 if (rc < 0) { 7668 pr_err("Failed to create ALSA mute control: %d\n", rc); 7669 goto err_exit; 7670 } 7671 data->ctl_mute_id = &ctl_mute->id; 7672 7673 rc = snd_card_register(card); 7674 if (rc < 0) { 7675 pr_err("Failed to register ALSA card: %d\n", rc); 7676 goto err_exit; 7677 } 7678 7679 alsa_card = card; 7680 return 0; 7681 7682 err_exit: 7683 snd_card_free(card); 7684 return -ENODEV; 7685 } 7686 7687 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7688 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7689 7690 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7691 /* Whitelist volume level on all IBM by default */ 7692 { .vendor = PCI_VENDOR_ID_IBM, 7693 .bios = TPACPI_MATCH_ANY, 7694 .ec = TPACPI_MATCH_ANY, 7695 .quirks = TPACPI_VOL_Q_LEVEL }, 7696 7697 /* Lenovo models with volume control (needs confirmation) */ 7698 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7699 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7700 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7701 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7702 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7703 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7704 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7705 7706 /* Whitelist mute-only on all Lenovo by default */ 7707 { .vendor = PCI_VENDOR_ID_LENOVO, 7708 .bios = TPACPI_MATCH_ANY, 7709 .ec = TPACPI_MATCH_ANY, 7710 .quirks = TPACPI_VOL_Q_MUTEONLY } 7711 }; 7712 7713 static int __init volume_init(struct ibm_init_struct *iibm) 7714 { 7715 unsigned long quirks; 7716 int rc; 7717 7718 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7719 7720 mutex_init(&volume_mutex); 7721 7722 /* 7723 * Check for module parameter bogosity, note that we 7724 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7725 * able to detect "unspecified" 7726 */ 7727 if (volume_mode > TPACPI_VOL_MODE_MAX) 7728 return -EINVAL; 7729 7730 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7731 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7732 TPACPI_MAIL); 7733 return -ENODEV; 7734 } 7735 7736 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7737 return -EINVAL; 7738 7739 /* 7740 * The ALSA mixer is our primary interface. 7741 * When disabled, don't install the subdriver at all 7742 */ 7743 if (!alsa_enable) { 7744 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7745 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7746 return -ENODEV; 7747 } 7748 7749 quirks = tpacpi_check_quirks(volume_quirk_table, 7750 ARRAY_SIZE(volume_quirk_table)); 7751 7752 switch (volume_capabilities) { 7753 case TPACPI_VOL_CAP_AUTO: 7754 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7755 tp_features.mixer_no_level_control = 1; 7756 else if (quirks & TPACPI_VOL_Q_LEVEL) 7757 tp_features.mixer_no_level_control = 0; 7758 else 7759 return -ENODEV; /* no mixer */ 7760 break; 7761 case TPACPI_VOL_CAP_VOLMUTE: 7762 tp_features.mixer_no_level_control = 0; 7763 break; 7764 case TPACPI_VOL_CAP_MUTEONLY: 7765 tp_features.mixer_no_level_control = 1; 7766 break; 7767 default: 7768 return -ENODEV; 7769 } 7770 7771 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7772 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7773 "using user-supplied volume_capabilities=%d\n", 7774 volume_capabilities); 7775 7776 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7777 volume_mode == TPACPI_VOL_MODE_MAX) { 7778 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7779 7780 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7781 "driver auto-selected volume_mode=%d\n", 7782 volume_mode); 7783 } else { 7784 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7785 "using user-supplied volume_mode=%d\n", 7786 volume_mode); 7787 } 7788 7789 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7790 "mute is supported, volume control is %s\n", 7791 str_supported(!tp_features.mixer_no_level_control)); 7792 7793 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7794 software_mute_active = true; 7795 } else { 7796 rc = volume_create_alsa_mixer(); 7797 if (rc) { 7798 pr_err("Could not create the ALSA mixer interface\n"); 7799 return rc; 7800 } 7801 7802 pr_info("Console audio control enabled, mode: %s\n", 7803 (volume_control_allowed) ? 7804 "override (read/write)" : 7805 "monitor (read only)"); 7806 } 7807 7808 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7809 "registering volume hotkeys as change notification\n"); 7810 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7811 | TP_ACPI_HKEY_VOLUP_MASK 7812 | TP_ACPI_HKEY_VOLDWN_MASK 7813 | TP_ACPI_HKEY_MUTE_MASK); 7814 7815 return 0; 7816 } 7817 7818 static int volume_read(struct seq_file *m) 7819 { 7820 u8 status; 7821 7822 if (volume_get_status(&status) < 0) { 7823 seq_printf(m, "level:\t\tunreadable\n"); 7824 } else { 7825 if (tp_features.mixer_no_level_control) 7826 seq_printf(m, "level:\t\tunsupported\n"); 7827 else 7828 seq_printf(m, "level:\t\t%d\n", 7829 status & TP_EC_AUDIO_LVL_MSK); 7830 7831 seq_printf(m, "mute:\t\t%s\n", 7832 onoff(status, TP_EC_AUDIO_MUTESW)); 7833 7834 if (volume_control_allowed) { 7835 seq_printf(m, "commands:\tunmute, mute\n"); 7836 if (!tp_features.mixer_no_level_control) { 7837 seq_printf(m, "commands:\tup, down\n"); 7838 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7839 TP_EC_VOLUME_MAX); 7840 } 7841 } 7842 } 7843 7844 return 0; 7845 } 7846 7847 static int volume_write(char *buf) 7848 { 7849 u8 s; 7850 u8 new_level, new_mute; 7851 int l; 7852 char *cmd; 7853 int rc; 7854 7855 /* 7856 * We do allow volume control at driver startup, so that the 7857 * user can set initial state through the volume=... parameter hack. 7858 */ 7859 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7860 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7861 tp_warned.volume_ctrl_forbidden = 1; 7862 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7863 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7864 } 7865 return -EPERM; 7866 } 7867 7868 rc = volume_get_status(&s); 7869 if (rc < 0) 7870 return rc; 7871 7872 new_level = s & TP_EC_AUDIO_LVL_MSK; 7873 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7874 7875 while ((cmd = strsep(&buf, ","))) { 7876 if (!tp_features.mixer_no_level_control) { 7877 if (strlencmp(cmd, "up") == 0) { 7878 if (new_mute) 7879 new_mute = 0; 7880 else if (new_level < TP_EC_VOLUME_MAX) 7881 new_level++; 7882 continue; 7883 } else if (strlencmp(cmd, "down") == 0) { 7884 if (new_mute) 7885 new_mute = 0; 7886 else if (new_level > 0) 7887 new_level--; 7888 continue; 7889 } else if (sscanf(cmd, "level %u", &l) == 1 && 7890 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7891 new_level = l; 7892 continue; 7893 } 7894 } 7895 if (strlencmp(cmd, "mute") == 0) 7896 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7897 else if (strlencmp(cmd, "unmute") == 0) 7898 new_mute = 0; 7899 else 7900 return -EINVAL; 7901 } 7902 7903 if (tp_features.mixer_no_level_control) { 7904 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7905 new_mute ? "" : "un"); 7906 rc = volume_set_mute(!!new_mute); 7907 } else { 7908 tpacpi_disclose_usertask("procfs volume", 7909 "%smute and set level to %d\n", 7910 new_mute ? "" : "un", new_level); 7911 rc = volume_set_status(new_mute | new_level); 7912 } 7913 volume_alsa_notify_change(); 7914 7915 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7916 } 7917 7918 static struct ibm_struct volume_driver_data = { 7919 .name = "volume", 7920 .read = volume_read, 7921 .write = volume_write, 7922 .exit = volume_exit, 7923 .suspend = volume_suspend, 7924 .resume = volume_resume, 7925 .shutdown = volume_shutdown, 7926 }; 7927 7928 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7929 7930 #define alsa_card NULL 7931 7932 static inline void volume_alsa_notify_change(void) 7933 { 7934 } 7935 7936 static int __init volume_init(struct ibm_init_struct *iibm) 7937 { 7938 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7939 7940 return -ENODEV; 7941 } 7942 7943 static struct ibm_struct volume_driver_data = { 7944 .name = "volume", 7945 }; 7946 7947 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7948 7949 /************************************************************************* 7950 * Fan subdriver 7951 */ 7952 7953 /* 7954 * FAN ACCESS MODES 7955 * 7956 * TPACPI_FAN_RD_ACPI_GFAN: 7957 * ACPI GFAN method: returns fan level 7958 * 7959 * see TPACPI_FAN_WR_ACPI_SFAN 7960 * EC 0x2f (HFSP) not available if GFAN exists 7961 * 7962 * TPACPI_FAN_WR_ACPI_SFAN: 7963 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7964 * 7965 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7966 * it for writing. 7967 * 7968 * TPACPI_FAN_WR_TPEC: 7969 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7970 * Supported on almost all ThinkPads 7971 * 7972 * Fan speed changes of any sort (including those caused by the 7973 * disengaged mode) are usually done slowly by the firmware as the 7974 * maximum amount of fan duty cycle change per second seems to be 7975 * limited. 7976 * 7977 * Reading is not available if GFAN exists. 7978 * Writing is not available if SFAN exists. 7979 * 7980 * Bits 7981 * 7 automatic mode engaged; 7982 * (default operation mode of the ThinkPad) 7983 * fan level is ignored in this mode. 7984 * 6 full speed mode (takes precedence over bit 7); 7985 * not available on all thinkpads. May disable 7986 * the tachometer while the fan controller ramps up 7987 * the speed (which can take up to a few *minutes*). 7988 * Speeds up fan to 100% duty-cycle, which is far above 7989 * the standard RPM levels. It is not impossible that 7990 * it could cause hardware damage. 7991 * 5-3 unused in some models. Extra bits for fan level 7992 * in others, but still useless as all values above 7993 * 7 map to the same speed as level 7 in these models. 7994 * 2-0 fan level (0..7 usually) 7995 * 0x00 = stop 7996 * 0x07 = max (set when temperatures critical) 7997 * Some ThinkPads may have other levels, see 7998 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7999 * 8000 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 8001 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 8002 * does so, its initial value is meaningless (0x07). 8003 * 8004 * For firmware bugs, refer to: 8005 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 8006 * 8007 * ---- 8008 * 8009 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 8010 * Main fan tachometer reading (in RPM) 8011 * 8012 * This register is present on all ThinkPads with a new-style EC, and 8013 * it is known not to be present on the A21m/e, and T22, as there is 8014 * something else in offset 0x84 according to the ACPI DSDT. Other 8015 * ThinkPads from this same time period (and earlier) probably lack the 8016 * tachometer as well. 8017 * 8018 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 8019 * was never fixed by IBM to report the EC firmware version string 8020 * probably support the tachometer (like the early X models), so 8021 * detecting it is quite hard. We need more data to know for sure. 8022 * 8023 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 8024 * might result. 8025 * 8026 * FIRMWARE BUG: may go stale while the EC is switching to full speed 8027 * mode. 8028 * 8029 * For firmware bugs, refer to: 8030 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 8031 * 8032 * ---- 8033 * 8034 * ThinkPad EC register 0x31 bit 0 (only on select models) 8035 * 8036 * When bit 0 of EC register 0x31 is zero, the tachometer registers 8037 * show the speed of the main fan. When bit 0 of EC register 0x31 8038 * is one, the tachometer registers show the speed of the auxiliary 8039 * fan. 8040 * 8041 * Fan control seems to affect both fans, regardless of the state 8042 * of this bit. 8043 * 8044 * So far, only the firmware for the X60/X61 non-tablet versions 8045 * seem to support this (firmware TP-7M). 8046 * 8047 * TPACPI_FAN_WR_ACPI_FANS: 8048 * ThinkPad X31, X40, X41. Not available in the X60. 8049 * 8050 * FANS ACPI handle: takes three arguments: low speed, medium speed, 8051 * high speed. ACPI DSDT seems to map these three speeds to levels 8052 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 8053 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 8054 * 8055 * The speeds are stored on handles 8056 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 8057 * 8058 * There are three default speed sets, accessible as handles: 8059 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 8060 * 8061 * ACPI DSDT switches which set is in use depending on various 8062 * factors. 8063 * 8064 * TPACPI_FAN_WR_TPEC is also available and should be used to 8065 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 8066 * but the ACPI tables just mention level 7. 8067 */ 8068 8069 enum { /* Fan control constants */ 8070 fan_status_offset = 0x2f, /* EC register 0x2f */ 8071 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 8072 * 0x84 must be read before 0x85 */ 8073 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 8074 bit 0 selects which fan is active */ 8075 8076 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 8077 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 8078 8079 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 8080 }; 8081 8082 enum fan_status_access_mode { 8083 TPACPI_FAN_NONE = 0, /* No fan status or control */ 8084 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 8085 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 8086 }; 8087 8088 enum fan_control_access_mode { 8089 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 8090 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 8091 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 8092 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 8093 }; 8094 8095 enum fan_control_commands { 8096 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8097 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8098 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8099 * and also watchdog cmd */ 8100 }; 8101 8102 static bool fan_control_allowed; 8103 8104 static enum fan_status_access_mode fan_status_access_mode; 8105 static enum fan_control_access_mode fan_control_access_mode; 8106 static enum fan_control_commands fan_control_commands; 8107 8108 static u8 fan_control_initial_status; 8109 static u8 fan_control_desired_level; 8110 static u8 fan_control_resume_level; 8111 static int fan_watchdog_maxinterval; 8112 8113 static struct mutex fan_mutex; 8114 8115 static void fan_watchdog_fire(struct work_struct *ignored); 8116 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8117 8118 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8119 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8120 "\\FSPD", /* 600e/x, 770e, 770x */ 8121 ); /* all others */ 8122 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8123 "JFNS", /* 770x-JL */ 8124 ); /* all others */ 8125 8126 /* 8127 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8128 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8129 * be in auto mode (0x80). 8130 * 8131 * This is corrected by any write to HFSP either by the driver, or 8132 * by the firmware. 8133 * 8134 * We assume 0x07 really means auto mode while this quirk is active, 8135 * as this is far more likely than the ThinkPad being in level 7, 8136 * which is only used by the firmware during thermal emergencies. 8137 * 8138 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8139 * TP-70 (T43, R52), which are known to be buggy. 8140 */ 8141 8142 static void fan_quirk1_setup(void) 8143 { 8144 if (fan_control_initial_status == 0x07) { 8145 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8146 tp_features.fan_ctrl_status_undef = 1; 8147 } 8148 } 8149 8150 static void fan_quirk1_handle(u8 *fan_status) 8151 { 8152 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8153 if (*fan_status != fan_control_initial_status) { 8154 /* something changed the HFSP regisnter since 8155 * driver init time, so it is not undefined 8156 * anymore */ 8157 tp_features.fan_ctrl_status_undef = 0; 8158 } else { 8159 /* Return most likely status. In fact, it 8160 * might be the only possible status */ 8161 *fan_status = TP_EC_FAN_AUTO; 8162 } 8163 } 8164 } 8165 8166 /* Select main fan on X60/X61, NOOP on others */ 8167 static bool fan_select_fan1(void) 8168 { 8169 if (tp_features.second_fan) { 8170 u8 val; 8171 8172 if (ec_read(fan_select_offset, &val) < 0) 8173 return false; 8174 val &= 0xFEU; 8175 if (ec_write(fan_select_offset, val) < 0) 8176 return false; 8177 } 8178 return true; 8179 } 8180 8181 /* Select secondary fan on X60/X61 */ 8182 static bool fan_select_fan2(void) 8183 { 8184 u8 val; 8185 8186 if (!tp_features.second_fan) 8187 return false; 8188 8189 if (ec_read(fan_select_offset, &val) < 0) 8190 return false; 8191 val |= 0x01U; 8192 if (ec_write(fan_select_offset, val) < 0) 8193 return false; 8194 8195 return true; 8196 } 8197 8198 /* 8199 * Call with fan_mutex held 8200 */ 8201 static void fan_update_desired_level(u8 status) 8202 { 8203 if ((status & 8204 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8205 if (status > 7) 8206 fan_control_desired_level = 7; 8207 else 8208 fan_control_desired_level = status; 8209 } 8210 } 8211 8212 static int fan_get_status(u8 *status) 8213 { 8214 u8 s; 8215 8216 /* TODO: 8217 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8218 8219 switch (fan_status_access_mode) { 8220 case TPACPI_FAN_RD_ACPI_GFAN: { 8221 /* 570, 600e/x, 770e, 770x */ 8222 int res; 8223 8224 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8225 return -EIO; 8226 8227 if (likely(status)) 8228 *status = res & 0x07; 8229 8230 break; 8231 } 8232 case TPACPI_FAN_RD_TPEC: 8233 /* all except 570, 600e/x, 770e, 770x */ 8234 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8235 return -EIO; 8236 8237 if (likely(status)) { 8238 *status = s; 8239 fan_quirk1_handle(status); 8240 } 8241 8242 break; 8243 8244 default: 8245 return -ENXIO; 8246 } 8247 8248 return 0; 8249 } 8250 8251 static int fan_get_status_safe(u8 *status) 8252 { 8253 int rc; 8254 u8 s; 8255 8256 if (mutex_lock_killable(&fan_mutex)) 8257 return -ERESTARTSYS; 8258 rc = fan_get_status(&s); 8259 if (!rc) 8260 fan_update_desired_level(s); 8261 mutex_unlock(&fan_mutex); 8262 8263 if (rc) 8264 return rc; 8265 if (status) 8266 *status = s; 8267 8268 return 0; 8269 } 8270 8271 static int fan_get_speed(unsigned int *speed) 8272 { 8273 u8 hi, lo; 8274 8275 switch (fan_status_access_mode) { 8276 case TPACPI_FAN_RD_TPEC: 8277 /* all except 570, 600e/x, 770e, 770x */ 8278 if (unlikely(!fan_select_fan1())) 8279 return -EIO; 8280 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8281 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8282 return -EIO; 8283 8284 if (likely(speed)) 8285 *speed = (hi << 8) | lo; 8286 8287 break; 8288 8289 default: 8290 return -ENXIO; 8291 } 8292 8293 return 0; 8294 } 8295 8296 static int fan2_get_speed(unsigned int *speed) 8297 { 8298 u8 hi, lo; 8299 bool rc; 8300 8301 switch (fan_status_access_mode) { 8302 case TPACPI_FAN_RD_TPEC: 8303 /* all except 570, 600e/x, 770e, 770x */ 8304 if (unlikely(!fan_select_fan2())) 8305 return -EIO; 8306 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8307 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8308 fan_select_fan1(); /* play it safe */ 8309 if (rc) 8310 return -EIO; 8311 8312 if (likely(speed)) 8313 *speed = (hi << 8) | lo; 8314 8315 break; 8316 8317 default: 8318 return -ENXIO; 8319 } 8320 8321 return 0; 8322 } 8323 8324 static int fan_set_level(int level) 8325 { 8326 if (!fan_control_allowed) 8327 return -EPERM; 8328 8329 switch (fan_control_access_mode) { 8330 case TPACPI_FAN_WR_ACPI_SFAN: 8331 if ((level < 0) || (level > 7)) 8332 return -EINVAL; 8333 8334 if (tp_features.second_fan_ctl) { 8335 if (!fan_select_fan2() || 8336 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8337 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8338 tp_features.second_fan_ctl = 0; 8339 } 8340 fan_select_fan1(); 8341 } 8342 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8343 return -EIO; 8344 break; 8345 8346 case TPACPI_FAN_WR_ACPI_FANS: 8347 case TPACPI_FAN_WR_TPEC: 8348 if (!(level & TP_EC_FAN_AUTO) && 8349 !(level & TP_EC_FAN_FULLSPEED) && 8350 ((level < 0) || (level > 7))) 8351 return -EINVAL; 8352 8353 /* safety net should the EC not support AUTO 8354 * or FULLSPEED mode bits and just ignore them */ 8355 if (level & TP_EC_FAN_FULLSPEED) 8356 level |= 7; /* safety min speed 7 */ 8357 else if (level & TP_EC_FAN_AUTO) 8358 level |= 4; /* safety min speed 4 */ 8359 8360 if (tp_features.second_fan_ctl) { 8361 if (!fan_select_fan2() || 8362 !acpi_ec_write(fan_status_offset, level)) { 8363 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8364 tp_features.second_fan_ctl = 0; 8365 } 8366 fan_select_fan1(); 8367 8368 } 8369 if (!acpi_ec_write(fan_status_offset, level)) 8370 return -EIO; 8371 else 8372 tp_features.fan_ctrl_status_undef = 0; 8373 break; 8374 8375 default: 8376 return -ENXIO; 8377 } 8378 8379 vdbg_printk(TPACPI_DBG_FAN, 8380 "fan control: set fan control register to 0x%02x\n", level); 8381 return 0; 8382 } 8383 8384 static int fan_set_level_safe(int level) 8385 { 8386 int rc; 8387 8388 if (!fan_control_allowed) 8389 return -EPERM; 8390 8391 if (mutex_lock_killable(&fan_mutex)) 8392 return -ERESTARTSYS; 8393 8394 if (level == TPACPI_FAN_LAST_LEVEL) 8395 level = fan_control_desired_level; 8396 8397 rc = fan_set_level(level); 8398 if (!rc) 8399 fan_update_desired_level(level); 8400 8401 mutex_unlock(&fan_mutex); 8402 return rc; 8403 } 8404 8405 static int fan_set_enable(void) 8406 { 8407 u8 s; 8408 int rc; 8409 8410 if (!fan_control_allowed) 8411 return -EPERM; 8412 8413 if (mutex_lock_killable(&fan_mutex)) 8414 return -ERESTARTSYS; 8415 8416 switch (fan_control_access_mode) { 8417 case TPACPI_FAN_WR_ACPI_FANS: 8418 case TPACPI_FAN_WR_TPEC: 8419 rc = fan_get_status(&s); 8420 if (rc) 8421 break; 8422 8423 /* Don't go out of emergency fan mode */ 8424 if (s != 7) { 8425 s &= 0x07; 8426 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8427 } 8428 8429 if (!acpi_ec_write(fan_status_offset, s)) 8430 rc = -EIO; 8431 else { 8432 tp_features.fan_ctrl_status_undef = 0; 8433 rc = 0; 8434 } 8435 break; 8436 8437 case TPACPI_FAN_WR_ACPI_SFAN: 8438 rc = fan_get_status(&s); 8439 if (rc) 8440 break; 8441 8442 s &= 0x07; 8443 8444 /* Set fan to at least level 4 */ 8445 s |= 4; 8446 8447 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8448 rc = -EIO; 8449 else 8450 rc = 0; 8451 break; 8452 8453 default: 8454 rc = -ENXIO; 8455 } 8456 8457 mutex_unlock(&fan_mutex); 8458 8459 if (!rc) 8460 vdbg_printk(TPACPI_DBG_FAN, 8461 "fan control: set fan control register to 0x%02x\n", 8462 s); 8463 return rc; 8464 } 8465 8466 static int fan_set_disable(void) 8467 { 8468 int rc; 8469 8470 if (!fan_control_allowed) 8471 return -EPERM; 8472 8473 if (mutex_lock_killable(&fan_mutex)) 8474 return -ERESTARTSYS; 8475 8476 rc = 0; 8477 switch (fan_control_access_mode) { 8478 case TPACPI_FAN_WR_ACPI_FANS: 8479 case TPACPI_FAN_WR_TPEC: 8480 if (!acpi_ec_write(fan_status_offset, 0x00)) 8481 rc = -EIO; 8482 else { 8483 fan_control_desired_level = 0; 8484 tp_features.fan_ctrl_status_undef = 0; 8485 } 8486 break; 8487 8488 case TPACPI_FAN_WR_ACPI_SFAN: 8489 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8490 rc = -EIO; 8491 else 8492 fan_control_desired_level = 0; 8493 break; 8494 8495 default: 8496 rc = -ENXIO; 8497 } 8498 8499 if (!rc) 8500 vdbg_printk(TPACPI_DBG_FAN, 8501 "fan control: set fan control register to 0\n"); 8502 8503 mutex_unlock(&fan_mutex); 8504 return rc; 8505 } 8506 8507 static int fan_set_speed(int speed) 8508 { 8509 int rc; 8510 8511 if (!fan_control_allowed) 8512 return -EPERM; 8513 8514 if (mutex_lock_killable(&fan_mutex)) 8515 return -ERESTARTSYS; 8516 8517 rc = 0; 8518 switch (fan_control_access_mode) { 8519 case TPACPI_FAN_WR_ACPI_FANS: 8520 if (speed >= 0 && speed <= 65535) { 8521 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8522 speed, speed, speed)) 8523 rc = -EIO; 8524 } else 8525 rc = -EINVAL; 8526 break; 8527 8528 default: 8529 rc = -ENXIO; 8530 } 8531 8532 mutex_unlock(&fan_mutex); 8533 return rc; 8534 } 8535 8536 static void fan_watchdog_reset(void) 8537 { 8538 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8539 return; 8540 8541 if (fan_watchdog_maxinterval > 0 && 8542 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8543 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8544 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8545 else 8546 cancel_delayed_work(&fan_watchdog_task); 8547 } 8548 8549 static void fan_watchdog_fire(struct work_struct *ignored) 8550 { 8551 int rc; 8552 8553 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8554 return; 8555 8556 pr_notice("fan watchdog: enabling fan\n"); 8557 rc = fan_set_enable(); 8558 if (rc < 0) { 8559 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8560 rc); 8561 /* reschedule for later */ 8562 fan_watchdog_reset(); 8563 } 8564 } 8565 8566 /* 8567 * SYSFS fan layout: hwmon compatible (device) 8568 * 8569 * pwm*_enable: 8570 * 0: "disengaged" mode 8571 * 1: manual mode 8572 * 2: native EC "auto" mode (recommended, hardware default) 8573 * 8574 * pwm*: set speed in manual mode, ignored otherwise. 8575 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8576 * interpolation. 8577 * 8578 * fan*_input: tachometer reading, RPM 8579 * 8580 * 8581 * SYSFS fan layout: extensions 8582 * 8583 * fan_watchdog (driver): 8584 * fan watchdog interval in seconds, 0 disables (default), max 120 8585 */ 8586 8587 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8588 static ssize_t fan_pwm1_enable_show(struct device *dev, 8589 struct device_attribute *attr, 8590 char *buf) 8591 { 8592 int res, mode; 8593 u8 status; 8594 8595 res = fan_get_status_safe(&status); 8596 if (res) 8597 return res; 8598 8599 if (status & TP_EC_FAN_FULLSPEED) { 8600 mode = 0; 8601 } else if (status & TP_EC_FAN_AUTO) { 8602 mode = 2; 8603 } else 8604 mode = 1; 8605 8606 return sysfs_emit(buf, "%d\n", mode); 8607 } 8608 8609 static ssize_t fan_pwm1_enable_store(struct device *dev, 8610 struct device_attribute *attr, 8611 const char *buf, size_t count) 8612 { 8613 unsigned long t; 8614 int res, level; 8615 8616 if (parse_strtoul(buf, 2, &t)) 8617 return -EINVAL; 8618 8619 tpacpi_disclose_usertask("hwmon pwm1_enable", 8620 "set fan mode to %lu\n", t); 8621 8622 switch (t) { 8623 case 0: 8624 level = TP_EC_FAN_FULLSPEED; 8625 break; 8626 case 1: 8627 level = TPACPI_FAN_LAST_LEVEL; 8628 break; 8629 case 2: 8630 level = TP_EC_FAN_AUTO; 8631 break; 8632 case 3: 8633 /* reserved for software-controlled auto mode */ 8634 return -ENOSYS; 8635 default: 8636 return -EINVAL; 8637 } 8638 8639 res = fan_set_level_safe(level); 8640 if (res == -ENXIO) 8641 return -EINVAL; 8642 else if (res < 0) 8643 return res; 8644 8645 fan_watchdog_reset(); 8646 8647 return count; 8648 } 8649 8650 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8651 fan_pwm1_enable_show, fan_pwm1_enable_store); 8652 8653 /* sysfs fan pwm1 ------------------------------------------------------ */ 8654 static ssize_t fan_pwm1_show(struct device *dev, 8655 struct device_attribute *attr, 8656 char *buf) 8657 { 8658 int res; 8659 u8 status; 8660 8661 res = fan_get_status_safe(&status); 8662 if (res) 8663 return res; 8664 8665 if ((status & 8666 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8667 status = fan_control_desired_level; 8668 8669 if (status > 7) 8670 status = 7; 8671 8672 return sysfs_emit(buf, "%u\n", (status * 255) / 7); 8673 } 8674 8675 static ssize_t fan_pwm1_store(struct device *dev, 8676 struct device_attribute *attr, 8677 const char *buf, size_t count) 8678 { 8679 unsigned long s; 8680 int rc; 8681 u8 status, newlevel; 8682 8683 if (parse_strtoul(buf, 255, &s)) 8684 return -EINVAL; 8685 8686 tpacpi_disclose_usertask("hwmon pwm1", 8687 "set fan speed to %lu\n", s); 8688 8689 /* scale down from 0-255 to 0-7 */ 8690 newlevel = (s >> 5) & 0x07; 8691 8692 if (mutex_lock_killable(&fan_mutex)) 8693 return -ERESTARTSYS; 8694 8695 rc = fan_get_status(&status); 8696 if (!rc && (status & 8697 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8698 rc = fan_set_level(newlevel); 8699 if (rc == -ENXIO) 8700 rc = -EINVAL; 8701 else if (!rc) { 8702 fan_update_desired_level(newlevel); 8703 fan_watchdog_reset(); 8704 } 8705 } 8706 8707 mutex_unlock(&fan_mutex); 8708 return (rc) ? rc : count; 8709 } 8710 8711 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8712 8713 /* sysfs fan fan1_input ------------------------------------------------ */ 8714 static ssize_t fan_fan1_input_show(struct device *dev, 8715 struct device_attribute *attr, 8716 char *buf) 8717 { 8718 int res; 8719 unsigned int speed; 8720 8721 res = fan_get_speed(&speed); 8722 if (res < 0) 8723 return res; 8724 8725 return sysfs_emit(buf, "%u\n", speed); 8726 } 8727 8728 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8729 8730 /* sysfs fan fan2_input ------------------------------------------------ */ 8731 static ssize_t fan_fan2_input_show(struct device *dev, 8732 struct device_attribute *attr, 8733 char *buf) 8734 { 8735 int res; 8736 unsigned int speed; 8737 8738 res = fan2_get_speed(&speed); 8739 if (res < 0) 8740 return res; 8741 8742 return sysfs_emit(buf, "%u\n", speed); 8743 } 8744 8745 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8746 8747 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8748 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8749 { 8750 return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval); 8751 } 8752 8753 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8754 size_t count) 8755 { 8756 unsigned long t; 8757 8758 if (parse_strtoul(buf, 120, &t)) 8759 return -EINVAL; 8760 8761 if (!fan_control_allowed) 8762 return -EPERM; 8763 8764 fan_watchdog_maxinterval = t; 8765 fan_watchdog_reset(); 8766 8767 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8768 8769 return count; 8770 } 8771 static DRIVER_ATTR_RW(fan_watchdog); 8772 8773 /* --------------------------------------------------------------------- */ 8774 8775 static struct attribute *fan_attributes[] = { 8776 &dev_attr_pwm1_enable.attr, 8777 &dev_attr_pwm1.attr, 8778 &dev_attr_fan1_input.attr, 8779 &dev_attr_fan2_input.attr, 8780 NULL 8781 }; 8782 8783 static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 8784 int n) 8785 { 8786 if (fan_status_access_mode == TPACPI_FAN_NONE && 8787 fan_control_access_mode == TPACPI_FAN_WR_NONE) 8788 return 0; 8789 8790 if (attr == &dev_attr_fan2_input.attr) { 8791 if (!tp_features.second_fan) 8792 return 0; 8793 } 8794 8795 return attr->mode; 8796 } 8797 8798 static const struct attribute_group fan_attr_group = { 8799 .is_visible = fan_attr_is_visible, 8800 .attrs = fan_attributes, 8801 }; 8802 8803 static struct attribute *fan_driver_attributes[] = { 8804 &driver_attr_fan_watchdog.attr, 8805 NULL 8806 }; 8807 8808 static const struct attribute_group fan_driver_attr_group = { 8809 .is_visible = fan_attr_is_visible, 8810 .attrs = fan_driver_attributes, 8811 }; 8812 8813 #define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */ 8814 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8815 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8816 #define TPACPI_FAN_NOFAN 0x0008 /* no fan available */ 8817 8818 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8819 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8820 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8821 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8822 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8823 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8824 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8825 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8826 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8827 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8828 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8829 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8830 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8831 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8832 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8833 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8834 TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */ 8835 TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */ 8836 }; 8837 8838 static int __init fan_init(struct ibm_init_struct *iibm) 8839 { 8840 unsigned long quirks; 8841 8842 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8843 "initializing fan subdriver\n"); 8844 8845 mutex_init(&fan_mutex); 8846 fan_status_access_mode = TPACPI_FAN_NONE; 8847 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8848 fan_control_commands = 0; 8849 fan_watchdog_maxinterval = 0; 8850 tp_features.fan_ctrl_status_undef = 0; 8851 tp_features.second_fan = 0; 8852 tp_features.second_fan_ctl = 0; 8853 fan_control_desired_level = 7; 8854 8855 if (tpacpi_is_ibm()) { 8856 TPACPI_ACPIHANDLE_INIT(fans); 8857 TPACPI_ACPIHANDLE_INIT(gfan); 8858 TPACPI_ACPIHANDLE_INIT(sfan); 8859 } 8860 8861 quirks = tpacpi_check_quirks(fan_quirk_table, 8862 ARRAY_SIZE(fan_quirk_table)); 8863 8864 if (quirks & TPACPI_FAN_NOFAN) { 8865 pr_info("No integrated ThinkPad fan available\n"); 8866 return -ENODEV; 8867 } 8868 8869 if (gfan_handle) { 8870 /* 570, 600e/x, 770e, 770x */ 8871 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8872 } else { 8873 /* all other ThinkPads: note that even old-style 8874 * ThinkPad ECs supports the fan control register */ 8875 if (likely(acpi_ec_read(fan_status_offset, 8876 &fan_control_initial_status))) { 8877 int res; 8878 unsigned int speed; 8879 8880 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8881 if (quirks & TPACPI_FAN_Q1) 8882 fan_quirk1_setup(); 8883 /* Try and probe the 2nd fan */ 8884 tp_features.second_fan = 1; /* needed for get_speed to work */ 8885 res = fan2_get_speed(&speed); 8886 if (res >= 0) { 8887 /* It responded - so let's assume it's there */ 8888 tp_features.second_fan = 1; 8889 tp_features.second_fan_ctl = 1; 8890 pr_info("secondary fan control detected & enabled\n"); 8891 } else { 8892 /* Fan not auto-detected */ 8893 tp_features.second_fan = 0; 8894 if (quirks & TPACPI_FAN_2FAN) { 8895 tp_features.second_fan = 1; 8896 pr_info("secondary fan support enabled\n"); 8897 } 8898 if (quirks & TPACPI_FAN_2CTL) { 8899 tp_features.second_fan = 1; 8900 tp_features.second_fan_ctl = 1; 8901 pr_info("secondary fan control enabled\n"); 8902 } 8903 } 8904 } else { 8905 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8906 return -ENODEV; 8907 } 8908 } 8909 8910 if (sfan_handle) { 8911 /* 570, 770x-JL */ 8912 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8913 fan_control_commands |= 8914 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8915 } else { 8916 if (!gfan_handle) { 8917 /* gfan without sfan means no fan control */ 8918 /* all other models implement TP EC 0x2f control */ 8919 8920 if (fans_handle) { 8921 /* X31, X40, X41 */ 8922 fan_control_access_mode = 8923 TPACPI_FAN_WR_ACPI_FANS; 8924 fan_control_commands |= 8925 TPACPI_FAN_CMD_SPEED | 8926 TPACPI_FAN_CMD_LEVEL | 8927 TPACPI_FAN_CMD_ENABLE; 8928 } else { 8929 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8930 fan_control_commands |= 8931 TPACPI_FAN_CMD_LEVEL | 8932 TPACPI_FAN_CMD_ENABLE; 8933 } 8934 } 8935 } 8936 8937 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8938 "fan is %s, modes %d, %d\n", 8939 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8940 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8941 fan_status_access_mode, fan_control_access_mode); 8942 8943 /* fan control master switch */ 8944 if (!fan_control_allowed) { 8945 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8946 fan_control_commands = 0; 8947 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8948 "fan control features disabled by parameter\n"); 8949 } 8950 8951 /* update fan_control_desired_level */ 8952 if (fan_status_access_mode != TPACPI_FAN_NONE) 8953 fan_get_status_safe(NULL); 8954 8955 if (fan_status_access_mode == TPACPI_FAN_NONE && 8956 fan_control_access_mode == TPACPI_FAN_WR_NONE) 8957 return -ENODEV; 8958 8959 return 0; 8960 } 8961 8962 static void fan_exit(void) 8963 { 8964 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8965 "cancelling any pending fan watchdog tasks\n"); 8966 8967 cancel_delayed_work(&fan_watchdog_task); 8968 flush_workqueue(tpacpi_wq); 8969 } 8970 8971 static void fan_suspend(void) 8972 { 8973 int rc; 8974 8975 if (!fan_control_allowed) 8976 return; 8977 8978 /* Store fan status in cache */ 8979 fan_control_resume_level = 0; 8980 rc = fan_get_status_safe(&fan_control_resume_level); 8981 if (rc) 8982 pr_notice("failed to read fan level for later restore during resume: %d\n", 8983 rc); 8984 8985 /* if it is undefined, don't attempt to restore it. 8986 * KEEP THIS LAST */ 8987 if (tp_features.fan_ctrl_status_undef) 8988 fan_control_resume_level = 0; 8989 } 8990 8991 static void fan_resume(void) 8992 { 8993 u8 current_level = 7; 8994 bool do_set = false; 8995 int rc; 8996 8997 /* DSDT *always* updates status on resume */ 8998 tp_features.fan_ctrl_status_undef = 0; 8999 9000 if (!fan_control_allowed || 9001 !fan_control_resume_level || 9002 fan_get_status_safe(¤t_level)) 9003 return; 9004 9005 switch (fan_control_access_mode) { 9006 case TPACPI_FAN_WR_ACPI_SFAN: 9007 /* never decrease fan level */ 9008 do_set = (fan_control_resume_level > current_level); 9009 break; 9010 case TPACPI_FAN_WR_ACPI_FANS: 9011 case TPACPI_FAN_WR_TPEC: 9012 /* never decrease fan level, scale is: 9013 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 9014 * 9015 * We expect the firmware to set either 7 or AUTO, but we 9016 * handle FULLSPEED out of paranoia. 9017 * 9018 * So, we can safely only restore FULLSPEED or 7, anything 9019 * else could slow the fan. Restoring AUTO is useless, at 9020 * best that's exactly what the DSDT already set (it is the 9021 * slower it uses). 9022 * 9023 * Always keep in mind that the DSDT *will* have set the 9024 * fans to what the vendor supposes is the best level. We 9025 * muck with it only to speed the fan up. 9026 */ 9027 if (fan_control_resume_level != 7 && 9028 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 9029 return; 9030 else 9031 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 9032 (current_level != fan_control_resume_level); 9033 break; 9034 default: 9035 return; 9036 } 9037 if (do_set) { 9038 pr_notice("restoring fan level to 0x%02x\n", 9039 fan_control_resume_level); 9040 rc = fan_set_level_safe(fan_control_resume_level); 9041 if (rc < 0) 9042 pr_notice("failed to restore fan level: %d\n", rc); 9043 } 9044 } 9045 9046 static int fan_read(struct seq_file *m) 9047 { 9048 int rc; 9049 u8 status; 9050 unsigned int speed = 0; 9051 9052 switch (fan_status_access_mode) { 9053 case TPACPI_FAN_RD_ACPI_GFAN: 9054 /* 570, 600e/x, 770e, 770x */ 9055 rc = fan_get_status_safe(&status); 9056 if (rc) 9057 return rc; 9058 9059 seq_printf(m, "status:\t\t%s\n" 9060 "level:\t\t%d\n", 9061 (status != 0) ? "enabled" : "disabled", status); 9062 break; 9063 9064 case TPACPI_FAN_RD_TPEC: 9065 /* all except 570, 600e/x, 770e, 770x */ 9066 rc = fan_get_status_safe(&status); 9067 if (rc) 9068 return rc; 9069 9070 seq_printf(m, "status:\t\t%s\n", 9071 (status != 0) ? "enabled" : "disabled"); 9072 9073 rc = fan_get_speed(&speed); 9074 if (rc < 0) 9075 return rc; 9076 9077 seq_printf(m, "speed:\t\t%d\n", speed); 9078 9079 if (status & TP_EC_FAN_FULLSPEED) 9080 /* Disengaged mode takes precedence */ 9081 seq_printf(m, "level:\t\tdisengaged\n"); 9082 else if (status & TP_EC_FAN_AUTO) 9083 seq_printf(m, "level:\t\tauto\n"); 9084 else 9085 seq_printf(m, "level:\t\t%d\n", status); 9086 break; 9087 9088 case TPACPI_FAN_NONE: 9089 default: 9090 seq_printf(m, "status:\t\tnot supported\n"); 9091 } 9092 9093 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9094 seq_printf(m, "commands:\tlevel <level>"); 9095 9096 switch (fan_control_access_mode) { 9097 case TPACPI_FAN_WR_ACPI_SFAN: 9098 seq_printf(m, " (<level> is 0-7)\n"); 9099 break; 9100 9101 default: 9102 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9103 break; 9104 } 9105 } 9106 9107 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9108 seq_printf(m, "commands:\tenable, disable\n" 9109 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9110 9111 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9112 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9113 9114 return 0; 9115 } 9116 9117 static int fan_write_cmd_level(const char *cmd, int *rc) 9118 { 9119 int level; 9120 9121 if (strlencmp(cmd, "level auto") == 0) 9122 level = TP_EC_FAN_AUTO; 9123 else if ((strlencmp(cmd, "level disengaged") == 0) || 9124 (strlencmp(cmd, "level full-speed") == 0)) 9125 level = TP_EC_FAN_FULLSPEED; 9126 else if (sscanf(cmd, "level %d", &level) != 1) 9127 return 0; 9128 9129 *rc = fan_set_level_safe(level); 9130 if (*rc == -ENXIO) 9131 pr_err("level command accepted for unsupported access mode %d\n", 9132 fan_control_access_mode); 9133 else if (!*rc) 9134 tpacpi_disclose_usertask("procfs fan", 9135 "set level to %d\n", level); 9136 9137 return 1; 9138 } 9139 9140 static int fan_write_cmd_enable(const char *cmd, int *rc) 9141 { 9142 if (strlencmp(cmd, "enable") != 0) 9143 return 0; 9144 9145 *rc = fan_set_enable(); 9146 if (*rc == -ENXIO) 9147 pr_err("enable command accepted for unsupported access mode %d\n", 9148 fan_control_access_mode); 9149 else if (!*rc) 9150 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9151 9152 return 1; 9153 } 9154 9155 static int fan_write_cmd_disable(const char *cmd, int *rc) 9156 { 9157 if (strlencmp(cmd, "disable") != 0) 9158 return 0; 9159 9160 *rc = fan_set_disable(); 9161 if (*rc == -ENXIO) 9162 pr_err("disable command accepted for unsupported access mode %d\n", 9163 fan_control_access_mode); 9164 else if (!*rc) 9165 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9166 9167 return 1; 9168 } 9169 9170 static int fan_write_cmd_speed(const char *cmd, int *rc) 9171 { 9172 int speed; 9173 9174 /* TODO: 9175 * Support speed <low> <medium> <high> ? */ 9176 9177 if (sscanf(cmd, "speed %d", &speed) != 1) 9178 return 0; 9179 9180 *rc = fan_set_speed(speed); 9181 if (*rc == -ENXIO) 9182 pr_err("speed command accepted for unsupported access mode %d\n", 9183 fan_control_access_mode); 9184 else if (!*rc) 9185 tpacpi_disclose_usertask("procfs fan", 9186 "set speed to %d\n", speed); 9187 9188 return 1; 9189 } 9190 9191 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9192 { 9193 int interval; 9194 9195 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9196 return 0; 9197 9198 if (interval < 0 || interval > 120) 9199 *rc = -EINVAL; 9200 else { 9201 fan_watchdog_maxinterval = interval; 9202 tpacpi_disclose_usertask("procfs fan", 9203 "set watchdog timer to %d\n", 9204 interval); 9205 } 9206 9207 return 1; 9208 } 9209 9210 static int fan_write(char *buf) 9211 { 9212 char *cmd; 9213 int rc = 0; 9214 9215 while (!rc && (cmd = strsep(&buf, ","))) { 9216 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9217 fan_write_cmd_level(cmd, &rc)) && 9218 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9219 (fan_write_cmd_enable(cmd, &rc) || 9220 fan_write_cmd_disable(cmd, &rc) || 9221 fan_write_cmd_watchdog(cmd, &rc))) && 9222 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9223 fan_write_cmd_speed(cmd, &rc)) 9224 ) 9225 rc = -EINVAL; 9226 else if (!rc) 9227 fan_watchdog_reset(); 9228 } 9229 9230 return rc; 9231 } 9232 9233 static struct ibm_struct fan_driver_data = { 9234 .name = "fan", 9235 .read = fan_read, 9236 .write = fan_write, 9237 .exit = fan_exit, 9238 .suspend = fan_suspend, 9239 .resume = fan_resume, 9240 }; 9241 9242 /************************************************************************* 9243 * Mute LED subdriver 9244 */ 9245 9246 #define TPACPI_LED_MAX 2 9247 9248 struct tp_led_table { 9249 acpi_string name; 9250 int on_value; 9251 int off_value; 9252 int state; 9253 }; 9254 9255 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9256 [LED_AUDIO_MUTE] = { 9257 .name = "SSMS", 9258 .on_value = 1, 9259 .off_value = 0, 9260 }, 9261 [LED_AUDIO_MICMUTE] = { 9262 .name = "MMTS", 9263 .on_value = 2, 9264 .off_value = 0, 9265 }, 9266 }; 9267 9268 static int mute_led_on_off(struct tp_led_table *t, bool state) 9269 { 9270 acpi_handle temp; 9271 int output; 9272 9273 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9274 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9275 return -EIO; 9276 } 9277 9278 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9279 state ? t->on_value : t->off_value)) 9280 return -EIO; 9281 9282 t->state = state; 9283 return state; 9284 } 9285 9286 static int tpacpi_led_set(int whichled, bool on) 9287 { 9288 struct tp_led_table *t; 9289 9290 t = &led_tables[whichled]; 9291 if (t->state < 0 || t->state == on) 9292 return t->state; 9293 return mute_led_on_off(t, on); 9294 } 9295 9296 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9297 enum led_brightness brightness) 9298 { 9299 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9300 } 9301 9302 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9303 enum led_brightness brightness) 9304 { 9305 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9306 } 9307 9308 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9309 [LED_AUDIO_MUTE] = { 9310 .name = "platform::mute", 9311 .max_brightness = 1, 9312 .brightness_set_blocking = tpacpi_led_mute_set, 9313 .default_trigger = "audio-mute", 9314 }, 9315 [LED_AUDIO_MICMUTE] = { 9316 .name = "platform::micmute", 9317 .max_brightness = 1, 9318 .brightness_set_blocking = tpacpi_led_micmute_set, 9319 .default_trigger = "audio-micmute", 9320 }, 9321 }; 9322 9323 static int mute_led_init(struct ibm_init_struct *iibm) 9324 { 9325 acpi_handle temp; 9326 int i, err; 9327 9328 for (i = 0; i < TPACPI_LED_MAX; i++) { 9329 struct tp_led_table *t = &led_tables[i]; 9330 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9331 t->state = -ENODEV; 9332 continue; 9333 } 9334 9335 mute_led_cdev[i].brightness = ledtrig_audio_get(i); 9336 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9337 if (err < 0) { 9338 while (i--) 9339 led_classdev_unregister(&mute_led_cdev[i]); 9340 return err; 9341 } 9342 } 9343 return 0; 9344 } 9345 9346 static void mute_led_exit(void) 9347 { 9348 int i; 9349 9350 for (i = 0; i < TPACPI_LED_MAX; i++) { 9351 led_classdev_unregister(&mute_led_cdev[i]); 9352 tpacpi_led_set(i, false); 9353 } 9354 } 9355 9356 static void mute_led_resume(void) 9357 { 9358 int i; 9359 9360 for (i = 0; i < TPACPI_LED_MAX; i++) { 9361 struct tp_led_table *t = &led_tables[i]; 9362 if (t->state >= 0) 9363 mute_led_on_off(t, t->state); 9364 } 9365 } 9366 9367 static struct ibm_struct mute_led_driver_data = { 9368 .name = "mute_led", 9369 .exit = mute_led_exit, 9370 .resume = mute_led_resume, 9371 }; 9372 9373 /* 9374 * Battery Wear Control Driver 9375 * Contact: Ognjen Galic <smclt30p@gmail.com> 9376 */ 9377 9378 /* Metadata */ 9379 9380 #define GET_START "BCTG" 9381 #define SET_START "BCCS" 9382 #define GET_STOP "BCSG" 9383 #define SET_STOP "BCSS" 9384 #define GET_DISCHARGE "BDSG" 9385 #define SET_DISCHARGE "BDSS" 9386 #define GET_INHIBIT "BICG" 9387 #define SET_INHIBIT "BICS" 9388 9389 enum { 9390 BAT_ANY = 0, 9391 BAT_PRIMARY = 1, 9392 BAT_SECONDARY = 2 9393 }; 9394 9395 enum { 9396 /* Error condition bit */ 9397 METHOD_ERR = BIT(31), 9398 }; 9399 9400 enum { 9401 /* This is used in the get/set helpers */ 9402 THRESHOLD_START, 9403 THRESHOLD_STOP, 9404 FORCE_DISCHARGE, 9405 INHIBIT_CHARGE, 9406 }; 9407 9408 struct tpacpi_battery_data { 9409 int charge_start; 9410 int start_support; 9411 int charge_stop; 9412 int stop_support; 9413 unsigned int charge_behaviours; 9414 }; 9415 9416 struct tpacpi_battery_driver_data { 9417 struct tpacpi_battery_data batteries[3]; 9418 int individual_addressing; 9419 }; 9420 9421 static struct tpacpi_battery_driver_data battery_info; 9422 9423 /* ACPI helpers/functions/probes */ 9424 9425 /** 9426 * This evaluates a ACPI method call specific to the battery 9427 * ACPI extension. The specifics are that an error is marked 9428 * in the 32rd bit of the response, so we just check that here. 9429 */ 9430 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9431 { 9432 int response; 9433 9434 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9435 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9436 return AE_ERROR; 9437 } 9438 if (response & METHOD_ERR) { 9439 acpi_handle_err(hkey_handle, 9440 "%s evaluated but flagged as error", method); 9441 return AE_ERROR; 9442 } 9443 *ret = response; 9444 return AE_OK; 9445 } 9446 9447 static int tpacpi_battery_get(int what, int battery, int *ret) 9448 { 9449 switch (what) { 9450 case THRESHOLD_START: 9451 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9452 return -ENODEV; 9453 9454 /* The value is in the low 8 bits of the response */ 9455 *ret = *ret & 0xFF; 9456 return 0; 9457 case THRESHOLD_STOP: 9458 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9459 return -ENODEV; 9460 /* Value is in lower 8 bits */ 9461 *ret = *ret & 0xFF; 9462 /* 9463 * On the stop value, if we return 0 that 9464 * does not make any sense. 0 means Default, which 9465 * means that charging stops at 100%, so we return 9466 * that. 9467 */ 9468 if (*ret == 0) 9469 *ret = 100; 9470 return 0; 9471 case FORCE_DISCHARGE: 9472 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery)) 9473 return -ENODEV; 9474 /* The force discharge status is in bit 0 */ 9475 *ret = *ret & 0x01; 9476 return 0; 9477 case INHIBIT_CHARGE: 9478 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery)) 9479 return -ENODEV; 9480 /* The inhibit charge status is in bit 0 */ 9481 *ret = *ret & 0x01; 9482 return 0; 9483 default: 9484 pr_crit("wrong parameter: %d", what); 9485 return -EINVAL; 9486 } 9487 } 9488 9489 static int tpacpi_battery_set(int what, int battery, int value) 9490 { 9491 int param, ret; 9492 /* The first 8 bits are the value of the threshold */ 9493 param = value; 9494 /* The battery ID is in bits 8-9, 2 bits */ 9495 param |= battery << 8; 9496 9497 switch (what) { 9498 case THRESHOLD_START: 9499 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9500 pr_err("failed to set charge threshold on battery %d", 9501 battery); 9502 return -ENODEV; 9503 } 9504 return 0; 9505 case THRESHOLD_STOP: 9506 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9507 pr_err("failed to set stop threshold: %d", battery); 9508 return -ENODEV; 9509 } 9510 return 0; 9511 case FORCE_DISCHARGE: 9512 /* Force discharge is in bit 0, 9513 * break on AC attach is in bit 1 (won't work on some ThinkPads), 9514 * battery ID is in bits 8-9, 2 bits. 9515 */ 9516 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) { 9517 pr_err("failed to set force discharge on %d", battery); 9518 return -ENODEV; 9519 } 9520 return 0; 9521 case INHIBIT_CHARGE: 9522 /* When setting inhibit charge, we set a default value of 9523 * always breaking on AC detach and the effective time is set to 9524 * be permanent. 9525 * The battery ID is in bits 4-5, 2 bits, 9526 * the effective time is in bits 8-23, 2 bytes. 9527 * A time of FFFF indicates forever. 9528 */ 9529 param = value; 9530 param |= battery << 4; 9531 param |= 0xFFFF << 8; 9532 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) { 9533 pr_err("failed to set inhibit charge on %d", battery); 9534 return -ENODEV; 9535 } 9536 return 0; 9537 default: 9538 pr_crit("wrong parameter: %d", what); 9539 return -EINVAL; 9540 } 9541 } 9542 9543 static int tpacpi_battery_set_validate(int what, int battery, int value) 9544 { 9545 int ret, v; 9546 9547 ret = tpacpi_battery_set(what, battery, value); 9548 if (ret < 0) 9549 return ret; 9550 9551 ret = tpacpi_battery_get(what, battery, &v); 9552 if (ret < 0) 9553 return ret; 9554 9555 if (v == value) 9556 return 0; 9557 9558 msleep(500); 9559 9560 ret = tpacpi_battery_get(what, battery, &v); 9561 if (ret < 0) 9562 return ret; 9563 9564 if (v == value) 9565 return 0; 9566 9567 return -EIO; 9568 } 9569 9570 static int tpacpi_battery_probe(int battery) 9571 { 9572 int ret = 0; 9573 9574 memset(&battery_info.batteries[battery], 0, 9575 sizeof(battery_info.batteries[battery])); 9576 9577 /* 9578 * 1) Get the current start threshold 9579 * 2) Check for support 9580 * 3) Get the current stop threshold 9581 * 4) Check for support 9582 * 5) Get the current force discharge status 9583 * 6) Check for support 9584 * 7) Get the current inhibit charge status 9585 * 8) Check for support 9586 */ 9587 if (acpi_has_method(hkey_handle, GET_START)) { 9588 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9589 pr_err("Error probing battery %d\n", battery); 9590 return -ENODEV; 9591 } 9592 /* Individual addressing is in bit 9 */ 9593 if (ret & BIT(9)) 9594 battery_info.individual_addressing = true; 9595 /* Support is marked in bit 8 */ 9596 if (ret & BIT(8)) 9597 battery_info.batteries[battery].start_support = 1; 9598 else 9599 return -ENODEV; 9600 if (tpacpi_battery_get(THRESHOLD_START, battery, 9601 &battery_info.batteries[battery].charge_start)) { 9602 pr_err("Error probing battery %d\n", battery); 9603 return -ENODEV; 9604 } 9605 } 9606 if (acpi_has_method(hkey_handle, GET_STOP)) { 9607 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9608 pr_err("Error probing battery stop; %d\n", battery); 9609 return -ENODEV; 9610 } 9611 /* Support is marked in bit 8 */ 9612 if (ret & BIT(8)) 9613 battery_info.batteries[battery].stop_support = 1; 9614 else 9615 return -ENODEV; 9616 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9617 &battery_info.batteries[battery].charge_stop)) { 9618 pr_err("Error probing battery stop: %d\n", battery); 9619 return -ENODEV; 9620 } 9621 } 9622 if (acpi_has_method(hkey_handle, GET_DISCHARGE)) { 9623 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) { 9624 pr_err("Error probing battery discharge; %d\n", battery); 9625 return -ENODEV; 9626 } 9627 /* Support is marked in bit 8 */ 9628 if (ret & BIT(8)) 9629 battery_info.batteries[battery].charge_behaviours |= 9630 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE); 9631 } 9632 if (acpi_has_method(hkey_handle, GET_INHIBIT)) { 9633 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) { 9634 pr_err("Error probing battery inhibit charge; %d\n", battery); 9635 return -ENODEV; 9636 } 9637 /* Support is marked in bit 5 */ 9638 if (ret & BIT(5)) 9639 battery_info.batteries[battery].charge_behaviours |= 9640 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE); 9641 } 9642 9643 battery_info.batteries[battery].charge_behaviours |= 9644 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO); 9645 9646 pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n", 9647 battery, 9648 battery_info.batteries[battery].charge_start, 9649 battery_info.batteries[battery].charge_stop, 9650 battery_info.batteries[battery].charge_behaviours); 9651 9652 return 0; 9653 } 9654 9655 /* General helper functions */ 9656 9657 static int tpacpi_battery_get_id(const char *battery_name) 9658 { 9659 9660 if (strcmp(battery_name, "BAT0") == 0 || 9661 tp_features.battery_force_primary) 9662 return BAT_PRIMARY; 9663 if (strcmp(battery_name, "BAT1") == 0) 9664 return BAT_SECONDARY; 9665 /* 9666 * If for some reason the battery is not BAT0 nor is it 9667 * BAT1, we will assume it's the default, first battery, 9668 * AKA primary. 9669 */ 9670 pr_warn("unknown battery %s, assuming primary", battery_name); 9671 return BAT_PRIMARY; 9672 } 9673 9674 /* sysfs interface */ 9675 9676 static ssize_t tpacpi_battery_store(int what, 9677 struct device *dev, 9678 const char *buf, size_t count) 9679 { 9680 struct power_supply *supply = to_power_supply(dev); 9681 unsigned long value; 9682 int battery, rval; 9683 /* 9684 * Some systems have support for more than 9685 * one battery. If that is the case, 9686 * tpacpi_battery_probe marked that addressing 9687 * them individually is supported, so we do that 9688 * based on the device struct. 9689 * 9690 * On systems that are not supported, we assume 9691 * the primary as most of the ACPI calls fail 9692 * with "Any Battery" as the parameter. 9693 */ 9694 if (battery_info.individual_addressing) 9695 /* BAT_PRIMARY or BAT_SECONDARY */ 9696 battery = tpacpi_battery_get_id(supply->desc->name); 9697 else 9698 battery = BAT_PRIMARY; 9699 9700 rval = kstrtoul(buf, 10, &value); 9701 if (rval) 9702 return rval; 9703 9704 switch (what) { 9705 case THRESHOLD_START: 9706 if (!battery_info.batteries[battery].start_support) 9707 return -ENODEV; 9708 /* valid values are [0, 99] */ 9709 if (value > 99) 9710 return -EINVAL; 9711 if (value > battery_info.batteries[battery].charge_stop) 9712 return -EINVAL; 9713 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9714 return -ENODEV; 9715 battery_info.batteries[battery].charge_start = value; 9716 return count; 9717 9718 case THRESHOLD_STOP: 9719 if (!battery_info.batteries[battery].stop_support) 9720 return -ENODEV; 9721 /* valid values are [1, 100] */ 9722 if (value < 1 || value > 100) 9723 return -EINVAL; 9724 if (value < battery_info.batteries[battery].charge_start) 9725 return -EINVAL; 9726 battery_info.batteries[battery].charge_stop = value; 9727 /* 9728 * When 100 is passed to stop, we need to flip 9729 * it to 0 as that the EC understands that as 9730 * "Default", which will charge to 100% 9731 */ 9732 if (value == 100) 9733 value = 0; 9734 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9735 return -EINVAL; 9736 return count; 9737 default: 9738 pr_crit("Wrong parameter: %d", what); 9739 return -EINVAL; 9740 } 9741 return count; 9742 } 9743 9744 static ssize_t tpacpi_battery_show(int what, 9745 struct device *dev, 9746 char *buf) 9747 { 9748 struct power_supply *supply = to_power_supply(dev); 9749 int ret, battery; 9750 /* 9751 * Some systems have support for more than 9752 * one battery. If that is the case, 9753 * tpacpi_battery_probe marked that addressing 9754 * them individually is supported, so we; 9755 * based on the device struct. 9756 * 9757 * On systems that are not supported, we assume 9758 * the primary as most of the ACPI calls fail 9759 * with "Any Battery" as the parameter. 9760 */ 9761 if (battery_info.individual_addressing) 9762 /* BAT_PRIMARY or BAT_SECONDARY */ 9763 battery = tpacpi_battery_get_id(supply->desc->name); 9764 else 9765 battery = BAT_PRIMARY; 9766 if (tpacpi_battery_get(what, battery, &ret)) 9767 return -ENODEV; 9768 return sprintf(buf, "%d\n", ret); 9769 } 9770 9771 static ssize_t charge_control_start_threshold_show(struct device *device, 9772 struct device_attribute *attr, 9773 char *buf) 9774 { 9775 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9776 } 9777 9778 static ssize_t charge_control_end_threshold_show(struct device *device, 9779 struct device_attribute *attr, 9780 char *buf) 9781 { 9782 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9783 } 9784 9785 static ssize_t charge_behaviour_show(struct device *dev, 9786 struct device_attribute *attr, 9787 char *buf) 9788 { 9789 enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO; 9790 struct power_supply *supply = to_power_supply(dev); 9791 unsigned int available; 9792 int ret, battery; 9793 9794 battery = tpacpi_battery_get_id(supply->desc->name); 9795 available = battery_info.batteries[battery].charge_behaviours; 9796 9797 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) { 9798 if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret)) 9799 return -ENODEV; 9800 if (ret) { 9801 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE; 9802 goto out; 9803 } 9804 } 9805 9806 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) { 9807 if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret)) 9808 return -ENODEV; 9809 if (ret) { 9810 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE; 9811 goto out; 9812 } 9813 } 9814 9815 out: 9816 return power_supply_charge_behaviour_show(dev, available, active, buf); 9817 } 9818 9819 static ssize_t charge_control_start_threshold_store(struct device *dev, 9820 struct device_attribute *attr, 9821 const char *buf, size_t count) 9822 { 9823 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9824 } 9825 9826 static ssize_t charge_control_end_threshold_store(struct device *dev, 9827 struct device_attribute *attr, 9828 const char *buf, size_t count) 9829 { 9830 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9831 } 9832 9833 static ssize_t charge_behaviour_store(struct device *dev, 9834 struct device_attribute *attr, 9835 const char *buf, size_t count) 9836 { 9837 struct power_supply *supply = to_power_supply(dev); 9838 int selected, battery, ret = 0; 9839 unsigned int available; 9840 9841 battery = tpacpi_battery_get_id(supply->desc->name); 9842 available = battery_info.batteries[battery].charge_behaviours; 9843 selected = power_supply_charge_behaviour_parse(available, buf); 9844 9845 if (selected < 0) 9846 return selected; 9847 9848 switch (selected) { 9849 case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO: 9850 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9851 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9852 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9853 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0)); 9854 if (ret < 0) 9855 return ret; 9856 break; 9857 case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE: 9858 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9859 ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0); 9860 ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1)); 9861 if (ret < 0) 9862 return ret; 9863 break; 9864 case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE: 9865 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9866 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9867 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1)); 9868 if (ret < 0) 9869 return ret; 9870 break; 9871 default: 9872 dev_err(dev, "Unexpected charge behaviour: %d\n", selected); 9873 return -EINVAL; 9874 } 9875 9876 return count; 9877 } 9878 9879 static DEVICE_ATTR_RW(charge_control_start_threshold); 9880 static DEVICE_ATTR_RW(charge_control_end_threshold); 9881 static DEVICE_ATTR_RW(charge_behaviour); 9882 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9883 charge_start_threshold, 9884 0644, 9885 charge_control_start_threshold_show, 9886 charge_control_start_threshold_store 9887 ); 9888 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9889 charge_stop_threshold, 9890 0644, 9891 charge_control_end_threshold_show, 9892 charge_control_end_threshold_store 9893 ); 9894 9895 static struct attribute *tpacpi_battery_attrs[] = { 9896 &dev_attr_charge_control_start_threshold.attr, 9897 &dev_attr_charge_control_end_threshold.attr, 9898 &dev_attr_charge_start_threshold.attr, 9899 &dev_attr_charge_stop_threshold.attr, 9900 &dev_attr_charge_behaviour.attr, 9901 NULL, 9902 }; 9903 9904 ATTRIBUTE_GROUPS(tpacpi_battery); 9905 9906 /* ACPI battery hooking */ 9907 9908 static int tpacpi_battery_add(struct power_supply *battery) 9909 { 9910 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9911 9912 if (tpacpi_battery_probe(batteryid)) 9913 return -ENODEV; 9914 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9915 return -ENODEV; 9916 return 0; 9917 } 9918 9919 static int tpacpi_battery_remove(struct power_supply *battery) 9920 { 9921 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9922 return 0; 9923 } 9924 9925 static struct acpi_battery_hook battery_hook = { 9926 .add_battery = tpacpi_battery_add, 9927 .remove_battery = tpacpi_battery_remove, 9928 .name = "ThinkPad Battery Extension", 9929 }; 9930 9931 /* Subdriver init/exit */ 9932 9933 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 9934 /* 9935 * Individual addressing is broken on models that expose the 9936 * primary battery as BAT1. 9937 */ 9938 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 9939 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 9940 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 9941 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 9942 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 9943 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 9944 }; 9945 9946 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 9947 { 9948 memset(&battery_info, 0, sizeof(battery_info)); 9949 9950 tp_features.battery_force_primary = tpacpi_check_quirks( 9951 battery_quirk_table, 9952 ARRAY_SIZE(battery_quirk_table)); 9953 9954 battery_hook_register(&battery_hook); 9955 return 0; 9956 } 9957 9958 static void tpacpi_battery_exit(void) 9959 { 9960 battery_hook_unregister(&battery_hook); 9961 } 9962 9963 static struct ibm_struct battery_driver_data = { 9964 .name = "battery", 9965 .exit = tpacpi_battery_exit, 9966 }; 9967 9968 /************************************************************************* 9969 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 9970 */ 9971 9972 static struct drm_privacy_screen *lcdshadow_dev; 9973 static acpi_handle lcdshadow_get_handle; 9974 static acpi_handle lcdshadow_set_handle; 9975 9976 static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv, 9977 enum drm_privacy_screen_status state) 9978 { 9979 int output; 9980 9981 if (WARN_ON(!mutex_is_locked(&priv->lock))) 9982 return -EIO; 9983 9984 if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state)) 9985 return -EIO; 9986 9987 priv->hw_state = priv->sw_state = state; 9988 return 0; 9989 } 9990 9991 static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv) 9992 { 9993 int output; 9994 9995 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 9996 return; 9997 9998 priv->hw_state = priv->sw_state = output & 0x1; 9999 } 10000 10001 static const struct drm_privacy_screen_ops lcdshadow_ops = { 10002 .set_sw_state = lcdshadow_set_sw_state, 10003 .get_hw_state = lcdshadow_get_hw_state, 10004 }; 10005 10006 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 10007 { 10008 acpi_status status1, status2; 10009 int output; 10010 10011 status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle); 10012 status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle); 10013 if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2)) 10014 return 0; 10015 10016 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 10017 return -EIO; 10018 10019 if (!(output & 0x10000)) 10020 return 0; 10021 10022 lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev, 10023 &lcdshadow_ops, NULL); 10024 if (IS_ERR(lcdshadow_dev)) 10025 return PTR_ERR(lcdshadow_dev); 10026 10027 return 0; 10028 } 10029 10030 static void lcdshadow_exit(void) 10031 { 10032 drm_privacy_screen_unregister(lcdshadow_dev); 10033 } 10034 10035 static void lcdshadow_resume(void) 10036 { 10037 if (!lcdshadow_dev) 10038 return; 10039 10040 mutex_lock(&lcdshadow_dev->lock); 10041 lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state); 10042 mutex_unlock(&lcdshadow_dev->lock); 10043 } 10044 10045 static int lcdshadow_read(struct seq_file *m) 10046 { 10047 if (!lcdshadow_dev) { 10048 seq_puts(m, "status:\t\tnot supported\n"); 10049 } else { 10050 seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state); 10051 seq_puts(m, "commands:\t0, 1\n"); 10052 } 10053 10054 return 0; 10055 } 10056 10057 static int lcdshadow_write(char *buf) 10058 { 10059 char *cmd; 10060 int res, state = -EINVAL; 10061 10062 if (!lcdshadow_dev) 10063 return -ENODEV; 10064 10065 while ((cmd = strsep(&buf, ","))) { 10066 res = kstrtoint(cmd, 10, &state); 10067 if (res < 0) 10068 return res; 10069 } 10070 10071 if (state >= 2 || state < 0) 10072 return -EINVAL; 10073 10074 mutex_lock(&lcdshadow_dev->lock); 10075 res = lcdshadow_set_sw_state(lcdshadow_dev, state); 10076 mutex_unlock(&lcdshadow_dev->lock); 10077 10078 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 10079 10080 return res; 10081 } 10082 10083 static struct ibm_struct lcdshadow_driver_data = { 10084 .name = "lcdshadow", 10085 .exit = lcdshadow_exit, 10086 .resume = lcdshadow_resume, 10087 .read = lcdshadow_read, 10088 .write = lcdshadow_write, 10089 }; 10090 10091 /************************************************************************* 10092 * Thinkpad sensor interfaces 10093 */ 10094 10095 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 10096 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 10097 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 10098 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 10099 10100 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 10101 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 10102 10103 #define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ 10104 #define PALMSENSOR_ON_BIT 1 /* psensor status */ 10105 10106 static bool has_palmsensor; 10107 static bool has_lapsensor; 10108 static bool palm_state; 10109 static bool lap_state; 10110 static int dytc_version; 10111 10112 static int dytc_command(int command, int *output) 10113 { 10114 acpi_handle dytc_handle; 10115 10116 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 10117 /* Platform doesn't support DYTC */ 10118 return -ENODEV; 10119 } 10120 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 10121 return -EIO; 10122 return 0; 10123 } 10124 10125 static int lapsensor_get(bool *present, bool *state) 10126 { 10127 int output, err; 10128 10129 *present = false; 10130 err = dytc_command(DYTC_CMD_GET, &output); 10131 if (err) 10132 return err; 10133 10134 *present = true; /*If we get his far, we have lapmode support*/ 10135 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 10136 return 0; 10137 } 10138 10139 static int palmsensor_get(bool *present, bool *state) 10140 { 10141 acpi_handle psensor_handle; 10142 int output; 10143 10144 *present = false; 10145 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) 10146 return -ENODEV; 10147 if (!acpi_evalf(psensor_handle, &output, NULL, "d")) 10148 return -EIO; 10149 10150 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; 10151 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; 10152 return 0; 10153 } 10154 10155 static void lapsensor_refresh(void) 10156 { 10157 bool state; 10158 int err; 10159 10160 if (has_lapsensor) { 10161 err = lapsensor_get(&has_lapsensor, &state); 10162 if (err) 10163 return; 10164 if (lap_state != state) { 10165 lap_state = state; 10166 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 10167 } 10168 } 10169 } 10170 10171 static void palmsensor_refresh(void) 10172 { 10173 bool state; 10174 int err; 10175 10176 if (has_palmsensor) { 10177 err = palmsensor_get(&has_palmsensor, &state); 10178 if (err) 10179 return; 10180 if (palm_state != state) { 10181 palm_state = state; 10182 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); 10183 } 10184 } 10185 } 10186 10187 static ssize_t dytc_lapmode_show(struct device *dev, 10188 struct device_attribute *attr, 10189 char *buf) 10190 { 10191 if (has_lapsensor) 10192 return sysfs_emit(buf, "%d\n", lap_state); 10193 return sysfs_emit(buf, "\n"); 10194 } 10195 static DEVICE_ATTR_RO(dytc_lapmode); 10196 10197 static ssize_t palmsensor_show(struct device *dev, 10198 struct device_attribute *attr, 10199 char *buf) 10200 { 10201 if (has_palmsensor) 10202 return sysfs_emit(buf, "%d\n", palm_state); 10203 return sysfs_emit(buf, "\n"); 10204 } 10205 static DEVICE_ATTR_RO(palmsensor); 10206 10207 static struct attribute *proxsensor_attributes[] = { 10208 &dev_attr_dytc_lapmode.attr, 10209 &dev_attr_palmsensor.attr, 10210 NULL 10211 }; 10212 10213 static umode_t proxsensor_attr_is_visible(struct kobject *kobj, 10214 struct attribute *attr, int n) 10215 { 10216 if (attr == &dev_attr_dytc_lapmode.attr) { 10217 /* 10218 * Platforms before DYTC version 5 claim to have a lap sensor, 10219 * but it doesn't work, so we ignore them. 10220 */ 10221 if (!has_lapsensor || dytc_version < 5) 10222 return 0; 10223 } else if (attr == &dev_attr_palmsensor.attr) { 10224 if (!has_palmsensor) 10225 return 0; 10226 } 10227 10228 return attr->mode; 10229 } 10230 10231 static const struct attribute_group proxsensor_attr_group = { 10232 .is_visible = proxsensor_attr_is_visible, 10233 .attrs = proxsensor_attributes, 10234 }; 10235 10236 static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) 10237 { 10238 int palm_err, lap_err; 10239 10240 palm_err = palmsensor_get(&has_palmsensor, &palm_state); 10241 lap_err = lapsensor_get(&has_lapsensor, &lap_state); 10242 /* If support isn't available for both devices return -ENODEV */ 10243 if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) 10244 return -ENODEV; 10245 /* Otherwise, if there was an error return it */ 10246 if (palm_err && (palm_err != -ENODEV)) 10247 return palm_err; 10248 if (lap_err && (lap_err != -ENODEV)) 10249 return lap_err; 10250 10251 return 0; 10252 } 10253 10254 static struct ibm_struct proxsensor_driver_data = { 10255 .name = "proximity-sensor", 10256 }; 10257 10258 /************************************************************************* 10259 * DYTC Platform Profile interface 10260 */ 10261 10262 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 10263 #define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */ 10264 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 10265 10266 #define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */ 10267 #define DYTC_FC_MMC 27 /* MMC Mode supported */ 10268 #define DYTC_FC_PSC 29 /* PSC Mode supported */ 10269 10270 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 10271 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 10272 10273 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 10274 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 10275 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 10276 10277 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 10278 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 10279 #define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */ 10280 #define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */ 10281 10282 #define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */ 10283 #define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */ 10284 #define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */ 10285 #define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */ 10286 10287 #define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */ 10288 #define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */ 10289 #define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */ 10290 10291 #define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */ 10292 #define DYTC_ERR_SUCCESS 1 /* CMD completed successful */ 10293 10294 #define DYTC_SET_COMMAND(function, mode, on) \ 10295 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 10296 (mode) << DYTC_SET_MODE_BIT | \ 10297 (on) << DYTC_SET_VALID_BIT) 10298 10299 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0) 10300 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1) 10301 10302 enum dytc_profile_funcmode { 10303 DYTC_FUNCMODE_NONE = 0, 10304 DYTC_FUNCMODE_MMC, 10305 DYTC_FUNCMODE_PSC, 10306 }; 10307 10308 static enum dytc_profile_funcmode dytc_profile_available; 10309 static enum platform_profile_option dytc_current_profile; 10310 static atomic_t dytc_ignore_event = ATOMIC_INIT(0); 10311 static DEFINE_MUTEX(dytc_mutex); 10312 static bool dytc_mmc_get_available; 10313 10314 static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile) 10315 { 10316 if (dytc_profile_available == DYTC_FUNCMODE_MMC) { 10317 switch (dytcmode) { 10318 case DYTC_MODE_MMC_LOWPOWER: 10319 *profile = PLATFORM_PROFILE_LOW_POWER; 10320 break; 10321 case DYTC_MODE_MMC_DEFAULT: 10322 case DYTC_MODE_MMC_BALANCE: 10323 *profile = PLATFORM_PROFILE_BALANCED; 10324 break; 10325 case DYTC_MODE_MMC_PERFORM: 10326 *profile = PLATFORM_PROFILE_PERFORMANCE; 10327 break; 10328 default: /* Unknown mode */ 10329 return -EINVAL; 10330 } 10331 return 0; 10332 } 10333 if (dytc_profile_available == DYTC_FUNCMODE_PSC) { 10334 switch (dytcmode) { 10335 case DYTC_MODE_PSC_LOWPOWER: 10336 *profile = PLATFORM_PROFILE_LOW_POWER; 10337 break; 10338 case DYTC_MODE_PSC_BALANCE: 10339 *profile = PLATFORM_PROFILE_BALANCED; 10340 break; 10341 case DYTC_MODE_PSC_PERFORM: 10342 *profile = PLATFORM_PROFILE_PERFORMANCE; 10343 break; 10344 default: /* Unknown mode */ 10345 return -EINVAL; 10346 } 10347 } 10348 return 0; 10349 } 10350 10351 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 10352 { 10353 switch (profile) { 10354 case PLATFORM_PROFILE_LOW_POWER: 10355 if (dytc_profile_available == DYTC_FUNCMODE_MMC) 10356 *perfmode = DYTC_MODE_MMC_LOWPOWER; 10357 else if (dytc_profile_available == DYTC_FUNCMODE_PSC) 10358 *perfmode = DYTC_MODE_PSC_LOWPOWER; 10359 break; 10360 case PLATFORM_PROFILE_BALANCED: 10361 if (dytc_profile_available == DYTC_FUNCMODE_MMC) 10362 *perfmode = DYTC_MODE_MMC_BALANCE; 10363 else if (dytc_profile_available == DYTC_FUNCMODE_PSC) 10364 *perfmode = DYTC_MODE_PSC_BALANCE; 10365 break; 10366 case PLATFORM_PROFILE_PERFORMANCE: 10367 if (dytc_profile_available == DYTC_FUNCMODE_MMC) 10368 *perfmode = DYTC_MODE_MMC_PERFORM; 10369 else if (dytc_profile_available == DYTC_FUNCMODE_PSC) 10370 *perfmode = DYTC_MODE_PSC_PERFORM; 10371 break; 10372 default: /* Unknown profile */ 10373 return -EOPNOTSUPP; 10374 } 10375 return 0; 10376 } 10377 10378 /* 10379 * dytc_profile_get: Function to register with platform_profile 10380 * handler. Returns current platform profile. 10381 */ 10382 static int dytc_profile_get(struct platform_profile_handler *pprof, 10383 enum platform_profile_option *profile) 10384 { 10385 *profile = dytc_current_profile; 10386 return 0; 10387 } 10388 10389 /* 10390 * Helper function - check if we are in CQL mode and if we are 10391 * - disable CQL, 10392 * - run the command 10393 * - enable CQL 10394 * If not in CQL mode, just run the command 10395 */ 10396 static int dytc_cql_command(int command, int *output) 10397 { 10398 int err, cmd_err, dummy; 10399 int cur_funcmode; 10400 10401 /* Determine if we are in CQL mode. This alters the commands we do */ 10402 err = dytc_command(DYTC_CMD_GET, output); 10403 if (err) 10404 return err; 10405 10406 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10407 /* Check if we're OK to return immediately */ 10408 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) 10409 return 0; 10410 10411 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10412 atomic_inc(&dytc_ignore_event); 10413 err = dytc_command(DYTC_DISABLE_CQL, &dummy); 10414 if (err) 10415 return err; 10416 } 10417 10418 cmd_err = dytc_command(command, output); 10419 /* Check return condition after we've restored CQL state */ 10420 10421 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10422 err = dytc_command(DYTC_ENABLE_CQL, &dummy); 10423 if (err) 10424 return err; 10425 } 10426 return cmd_err; 10427 } 10428 10429 /* 10430 * dytc_profile_set: Function to register with platform_profile 10431 * handler. Sets current platform profile. 10432 */ 10433 static int dytc_profile_set(struct platform_profile_handler *pprof, 10434 enum platform_profile_option profile) 10435 { 10436 int perfmode; 10437 int output; 10438 int err; 10439 10440 err = mutex_lock_interruptible(&dytc_mutex); 10441 if (err) 10442 return err; 10443 10444 err = convert_profile_to_dytc(profile, &perfmode); 10445 if (err) 10446 goto unlock; 10447 10448 if (dytc_profile_available == DYTC_FUNCMODE_MMC) { 10449 if (profile == PLATFORM_PROFILE_BALANCED) { 10450 /* 10451 * To get back to balanced mode we need to issue a reset command. 10452 * Note we still need to disable CQL mode before hand and re-enable 10453 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays 10454 * stuck at 0 for aprox. 30 minutes. 10455 */ 10456 err = dytc_cql_command(DYTC_CMD_RESET, &output); 10457 if (err) 10458 goto unlock; 10459 } else { 10460 /* Determine if we are in CQL mode. This alters the commands we do */ 10461 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), 10462 &output); 10463 if (err) 10464 goto unlock; 10465 } 10466 } 10467 if (dytc_profile_available == DYTC_FUNCMODE_PSC) { 10468 err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output); 10469 if (err) 10470 goto unlock; 10471 } 10472 /* Success - update current profile */ 10473 dytc_current_profile = profile; 10474 unlock: 10475 mutex_unlock(&dytc_mutex); 10476 return err; 10477 } 10478 10479 static void dytc_profile_refresh(void) 10480 { 10481 enum platform_profile_option profile; 10482 int output, err = 0; 10483 int perfmode; 10484 10485 mutex_lock(&dytc_mutex); 10486 if (dytc_profile_available == DYTC_FUNCMODE_MMC) { 10487 if (dytc_mmc_get_available) 10488 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10489 else 10490 err = dytc_cql_command(DYTC_CMD_GET, &output); 10491 } else if (dytc_profile_available == DYTC_FUNCMODE_PSC) 10492 err = dytc_command(DYTC_CMD_GET, &output); 10493 10494 mutex_unlock(&dytc_mutex); 10495 if (err) 10496 return; 10497 10498 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 10499 convert_dytc_to_profile(perfmode, &profile); 10500 if (profile != dytc_current_profile) { 10501 dytc_current_profile = profile; 10502 platform_profile_notify(); 10503 } 10504 } 10505 10506 static struct platform_profile_handler dytc_profile = { 10507 .profile_get = dytc_profile_get, 10508 .profile_set = dytc_profile_set, 10509 }; 10510 10511 static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) 10512 { 10513 int err, output; 10514 10515 /* Setup supported modes */ 10516 set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices); 10517 set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices); 10518 set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices); 10519 10520 dytc_profile_available = DYTC_FUNCMODE_NONE; 10521 err = dytc_command(DYTC_CMD_QUERY, &output); 10522 if (err) 10523 return err; 10524 10525 if (output & BIT(DYTC_QUERY_ENABLE_BIT)) 10526 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 10527 10528 /* Check DYTC is enabled and supports mode setting */ 10529 if (dytc_version < 5) 10530 return -ENODEV; 10531 10532 /* Check what capabilities are supported */ 10533 err = dytc_command(DYTC_CMD_FUNC_CAP, &output); 10534 if (err) 10535 return err; 10536 10537 if (output & BIT(DYTC_FC_MMC)) { /* MMC MODE */ 10538 dytc_profile_available = DYTC_FUNCMODE_MMC; 10539 10540 /* 10541 * Check if MMC_GET functionality available 10542 * Version > 6 and return success from MMC_GET command 10543 */ 10544 dytc_mmc_get_available = false; 10545 if (dytc_version >= 6) { 10546 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10547 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS)) 10548 dytc_mmc_get_available = true; 10549 } 10550 } else if (output & BIT(DYTC_FC_PSC)) { /* PSC MODE */ 10551 dytc_profile_available = DYTC_FUNCMODE_PSC; 10552 } else { 10553 dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n"); 10554 return -ENODEV; 10555 } 10556 10557 dbg_printk(TPACPI_DBG_INIT, 10558 "DYTC version %d: thermal mode available\n", dytc_version); 10559 10560 /* Create platform_profile structure and register */ 10561 err = platform_profile_register(&dytc_profile); 10562 /* 10563 * If for some reason platform_profiles aren't enabled 10564 * don't quit terminally. 10565 */ 10566 if (err) 10567 return -ENODEV; 10568 10569 /* Ensure initial values are correct */ 10570 dytc_profile_refresh(); 10571 10572 return 0; 10573 } 10574 10575 static void dytc_profile_exit(void) 10576 { 10577 dytc_profile_available = DYTC_FUNCMODE_NONE; 10578 platform_profile_remove(); 10579 } 10580 10581 static struct ibm_struct dytc_profile_driver_data = { 10582 .name = "dytc-profile", 10583 .exit = dytc_profile_exit, 10584 }; 10585 10586 /************************************************************************* 10587 * Keyboard language interface 10588 */ 10589 10590 struct keyboard_lang_data { 10591 const char *lang_str; 10592 int lang_code; 10593 }; 10594 10595 static const struct keyboard_lang_data keyboard_lang_data[] = { 10596 {"be", 0x080c}, 10597 {"cz", 0x0405}, 10598 {"da", 0x0406}, 10599 {"de", 0x0c07}, 10600 {"en", 0x0000}, 10601 {"es", 0x2c0a}, 10602 {"et", 0x0425}, 10603 {"fr", 0x040c}, 10604 {"fr-ch", 0x100c}, 10605 {"hu", 0x040e}, 10606 {"it", 0x0410}, 10607 {"jp", 0x0411}, 10608 {"nl", 0x0413}, 10609 {"nn", 0x0414}, 10610 {"pl", 0x0415}, 10611 {"pt", 0x0816}, 10612 {"sl", 0x041b}, 10613 {"sv", 0x081d}, 10614 {"tr", 0x041f}, 10615 }; 10616 10617 static int set_keyboard_lang_command(int command) 10618 { 10619 acpi_handle sskl_handle; 10620 int output; 10621 10622 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { 10623 /* Platform doesn't support SSKL */ 10624 return -ENODEV; 10625 } 10626 10627 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) 10628 return -EIO; 10629 10630 return 0; 10631 } 10632 10633 static int get_keyboard_lang(int *output) 10634 { 10635 acpi_handle gskl_handle; 10636 int kbd_lang; 10637 10638 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { 10639 /* Platform doesn't support GSKL */ 10640 return -ENODEV; 10641 } 10642 10643 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) 10644 return -EIO; 10645 10646 /* 10647 * METHOD_ERR gets returned on devices where there are no special (e.g. '=', 10648 * '(' and ')') keys which use layout dependent key-press emulation. 10649 */ 10650 if (kbd_lang & METHOD_ERR) 10651 return -ENODEV; 10652 10653 *output = kbd_lang; 10654 10655 return 0; 10656 } 10657 10658 /* sysfs keyboard language entry */ 10659 static ssize_t keyboard_lang_show(struct device *dev, 10660 struct device_attribute *attr, 10661 char *buf) 10662 { 10663 int output, err, i, len = 0; 10664 10665 err = get_keyboard_lang(&output); 10666 if (err) 10667 return err; 10668 10669 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10670 if (i) 10671 len += sysfs_emit_at(buf, len, "%s", " "); 10672 10673 if (output == keyboard_lang_data[i].lang_code) { 10674 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); 10675 } else { 10676 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); 10677 } 10678 } 10679 len += sysfs_emit_at(buf, len, "\n"); 10680 10681 return len; 10682 } 10683 10684 static ssize_t keyboard_lang_store(struct device *dev, 10685 struct device_attribute *attr, 10686 const char *buf, size_t count) 10687 { 10688 int err, i; 10689 bool lang_found = false; 10690 int lang_code = 0; 10691 10692 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10693 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { 10694 lang_code = keyboard_lang_data[i].lang_code; 10695 lang_found = true; 10696 break; 10697 } 10698 } 10699 10700 if (lang_found) { 10701 lang_code = lang_code | 1 << 24; 10702 10703 /* Set language code */ 10704 err = set_keyboard_lang_command(lang_code); 10705 if (err) 10706 return err; 10707 } else { 10708 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); 10709 return -EINVAL; 10710 } 10711 10712 tpacpi_disclose_usertask(attr->attr.name, 10713 "keyboard language is set to %s\n", buf); 10714 10715 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); 10716 10717 return count; 10718 } 10719 static DEVICE_ATTR_RW(keyboard_lang); 10720 10721 static struct attribute *kbdlang_attributes[] = { 10722 &dev_attr_keyboard_lang.attr, 10723 NULL 10724 }; 10725 10726 static umode_t kbdlang_attr_is_visible(struct kobject *kobj, 10727 struct attribute *attr, int n) 10728 { 10729 return tp_features.kbd_lang ? attr->mode : 0; 10730 } 10731 10732 static const struct attribute_group kbdlang_attr_group = { 10733 .is_visible = kbdlang_attr_is_visible, 10734 .attrs = kbdlang_attributes, 10735 }; 10736 10737 static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) 10738 { 10739 int err, output; 10740 10741 err = get_keyboard_lang(&output); 10742 tp_features.kbd_lang = !err; 10743 return err; 10744 } 10745 10746 static struct ibm_struct kbdlang_driver_data = { 10747 .name = "kbdlang", 10748 }; 10749 10750 /************************************************************************* 10751 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN 10752 * and WLAN feature. 10753 */ 10754 #define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000 10755 #define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4) 10756 #define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8) 10757 static bool has_antennatype; 10758 static int wwan_antennatype; 10759 10760 static int dprc_command(int command, int *output) 10761 { 10762 acpi_handle dprc_handle; 10763 10764 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) { 10765 /* Platform doesn't support DPRC */ 10766 return -ENODEV; 10767 } 10768 10769 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command)) 10770 return -EIO; 10771 10772 /* 10773 * METHOD_ERR gets returned on devices where few commands are not supported 10774 * for example command to get WWAN Antenna type command is not supported on 10775 * some devices. 10776 */ 10777 if (*output & METHOD_ERR) 10778 return -ENODEV; 10779 10780 return 0; 10781 } 10782 10783 static int get_wwan_antenna(int *wwan_antennatype) 10784 { 10785 int output, err; 10786 10787 /* Get current Antenna type */ 10788 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output); 10789 if (err) 10790 return err; 10791 10792 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT) 10793 *wwan_antennatype = 1; 10794 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT) 10795 *wwan_antennatype = 2; 10796 else 10797 return -ENODEV; 10798 10799 return 0; 10800 } 10801 10802 /* sysfs wwan antenna type entry */ 10803 static ssize_t wwan_antenna_type_show(struct device *dev, 10804 struct device_attribute *attr, 10805 char *buf) 10806 { 10807 switch (wwan_antennatype) { 10808 case 1: 10809 return sysfs_emit(buf, "type a\n"); 10810 case 2: 10811 return sysfs_emit(buf, "type b\n"); 10812 default: 10813 return -ENODATA; 10814 } 10815 } 10816 static DEVICE_ATTR_RO(wwan_antenna_type); 10817 10818 static struct attribute *dprc_attributes[] = { 10819 &dev_attr_wwan_antenna_type.attr, 10820 NULL 10821 }; 10822 10823 static umode_t dprc_attr_is_visible(struct kobject *kobj, 10824 struct attribute *attr, int n) 10825 { 10826 return has_antennatype ? attr->mode : 0; 10827 } 10828 10829 static const struct attribute_group dprc_attr_group = { 10830 .is_visible = dprc_attr_is_visible, 10831 .attrs = dprc_attributes, 10832 }; 10833 10834 static int tpacpi_dprc_init(struct ibm_init_struct *iibm) 10835 { 10836 int err; 10837 10838 err = get_wwan_antenna(&wwan_antennatype); 10839 if (err) 10840 return err; 10841 10842 has_antennatype = true; 10843 return 0; 10844 } 10845 10846 static struct ibm_struct dprc_driver_data = { 10847 .name = "dprc", 10848 }; 10849 10850 /* --------------------------------------------------------------------- */ 10851 10852 static struct attribute *tpacpi_driver_attributes[] = { 10853 &driver_attr_debug_level.attr, 10854 &driver_attr_version.attr, 10855 &driver_attr_interface_version.attr, 10856 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 10857 &driver_attr_wlsw_emulstate.attr, 10858 &driver_attr_bluetooth_emulstate.attr, 10859 &driver_attr_wwan_emulstate.attr, 10860 &driver_attr_uwb_emulstate.attr, 10861 #endif 10862 NULL 10863 }; 10864 10865 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 10866 static umode_t tpacpi_attr_is_visible(struct kobject *kobj, 10867 struct attribute *attr, int n) 10868 { 10869 if (attr == &driver_attr_wlsw_emulstate.attr) { 10870 if (!dbg_wlswemul) 10871 return 0; 10872 } else if (attr == &driver_attr_bluetooth_emulstate.attr) { 10873 if (!dbg_bluetoothemul) 10874 return 0; 10875 } else if (attr == &driver_attr_wwan_emulstate.attr) { 10876 if (!dbg_wwanemul) 10877 return 0; 10878 } else if (attr == &driver_attr_uwb_emulstate.attr) { 10879 if (!dbg_uwbemul) 10880 return 0; 10881 } 10882 10883 return attr->mode; 10884 } 10885 #endif 10886 10887 static const struct attribute_group tpacpi_driver_attr_group = { 10888 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 10889 .is_visible = tpacpi_attr_is_visible, 10890 #endif 10891 .attrs = tpacpi_driver_attributes, 10892 }; 10893 10894 static const struct attribute_group *tpacpi_driver_groups[] = { 10895 &tpacpi_driver_attr_group, 10896 NULL, 10897 }; 10898 10899 static const struct attribute_group *tpacpi_groups[] = { 10900 &adaptive_kbd_attr_group, 10901 &hotkey_attr_group, 10902 &bluetooth_attr_group, 10903 &wan_attr_group, 10904 &cmos_attr_group, 10905 &proxsensor_attr_group, 10906 &kbdlang_attr_group, 10907 &dprc_attr_group, 10908 NULL, 10909 }; 10910 10911 static const struct attribute_group *tpacpi_hwmon_groups[] = { 10912 &thermal_attr_group, 10913 &temp_label_attr_group, 10914 &fan_attr_group, 10915 NULL, 10916 }; 10917 10918 static const struct attribute_group *tpacpi_hwmon_driver_groups[] = { 10919 &fan_driver_attr_group, 10920 NULL, 10921 }; 10922 10923 /**************************************************************************** 10924 **************************************************************************** 10925 * 10926 * Platform drivers 10927 * 10928 **************************************************************************** 10929 ****************************************************************************/ 10930 10931 static struct platform_driver tpacpi_pdriver = { 10932 .driver = { 10933 .name = TPACPI_DRVR_NAME, 10934 .pm = &tpacpi_pm, 10935 .groups = tpacpi_driver_groups, 10936 .dev_groups = tpacpi_groups, 10937 }, 10938 .shutdown = tpacpi_shutdown_handler, 10939 }; 10940 10941 static struct platform_driver tpacpi_hwmon_pdriver = { 10942 .driver = { 10943 .name = TPACPI_HWMON_DRVR_NAME, 10944 .groups = tpacpi_hwmon_driver_groups, 10945 }, 10946 }; 10947 10948 /**************************************************************************** 10949 **************************************************************************** 10950 * 10951 * Infrastructure 10952 * 10953 **************************************************************************** 10954 ****************************************************************************/ 10955 10956 /* 10957 * HKEY event callout for other subdrivers go here 10958 * (yes, it is ugly, but it is quick, safe, and gets the job done 10959 */ 10960 static void tpacpi_driver_event(const unsigned int hkey_event) 10961 { 10962 if (ibm_backlight_device) { 10963 switch (hkey_event) { 10964 case TP_HKEY_EV_BRGHT_UP: 10965 case TP_HKEY_EV_BRGHT_DOWN: 10966 tpacpi_brightness_notify_change(); 10967 } 10968 } 10969 if (alsa_card) { 10970 switch (hkey_event) { 10971 case TP_HKEY_EV_VOL_UP: 10972 case TP_HKEY_EV_VOL_DOWN: 10973 case TP_HKEY_EV_VOL_MUTE: 10974 volume_alsa_notify_change(); 10975 } 10976 } 10977 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 10978 enum led_brightness brightness; 10979 10980 mutex_lock(&kbdlight_mutex); 10981 10982 /* 10983 * Check the brightness actually changed, setting the brightness 10984 * through kbdlight_set_level() also triggers this event. 10985 */ 10986 brightness = kbdlight_sysfs_get(NULL); 10987 if (kbdlight_brightness != brightness) { 10988 kbdlight_brightness = brightness; 10989 led_classdev_notify_brightness_hw_changed( 10990 &tpacpi_led_kbdlight.led_classdev, brightness); 10991 } 10992 10993 mutex_unlock(&kbdlight_mutex); 10994 } 10995 10996 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) { 10997 lapsensor_refresh(); 10998 /* If we are already accessing DYTC then skip dytc update */ 10999 if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) 11000 dytc_profile_refresh(); 11001 } 11002 11003 if (lcdshadow_dev && hkey_event == TP_HKEY_EV_PRIVACYGUARD_TOGGLE) { 11004 enum drm_privacy_screen_status old_hw_state; 11005 bool changed; 11006 11007 mutex_lock(&lcdshadow_dev->lock); 11008 old_hw_state = lcdshadow_dev->hw_state; 11009 lcdshadow_get_hw_state(lcdshadow_dev); 11010 changed = lcdshadow_dev->hw_state != old_hw_state; 11011 mutex_unlock(&lcdshadow_dev->lock); 11012 11013 if (changed) 11014 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 11015 } 11016 } 11017 11018 static void hotkey_driver_event(const unsigned int scancode) 11019 { 11020 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 11021 } 11022 11023 /* --------------------------------------------------------------------- */ 11024 11025 /* /proc support */ 11026 static struct proc_dir_entry *proc_dir; 11027 11028 /* 11029 * Module and infrastructure proble, init and exit handling 11030 */ 11031 11032 static bool force_load; 11033 11034 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 11035 static const char * __init str_supported(int is_supported) 11036 { 11037 static char text_unsupported[] __initdata = "not supported"; 11038 11039 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 11040 } 11041 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 11042 11043 static void ibm_exit(struct ibm_struct *ibm) 11044 { 11045 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 11046 11047 list_del_init(&ibm->all_drivers); 11048 11049 if (ibm->flags.acpi_notify_installed) { 11050 dbg_printk(TPACPI_DBG_EXIT, 11051 "%s: acpi_remove_notify_handler\n", ibm->name); 11052 BUG_ON(!ibm->acpi); 11053 acpi_remove_notify_handler(*ibm->acpi->handle, 11054 ibm->acpi->type, 11055 dispatch_acpi_notify); 11056 ibm->flags.acpi_notify_installed = 0; 11057 } 11058 11059 if (ibm->flags.proc_created) { 11060 dbg_printk(TPACPI_DBG_EXIT, 11061 "%s: remove_proc_entry\n", ibm->name); 11062 remove_proc_entry(ibm->name, proc_dir); 11063 ibm->flags.proc_created = 0; 11064 } 11065 11066 if (ibm->flags.acpi_driver_registered) { 11067 dbg_printk(TPACPI_DBG_EXIT, 11068 "%s: acpi_bus_unregister_driver\n", ibm->name); 11069 BUG_ON(!ibm->acpi); 11070 acpi_bus_unregister_driver(ibm->acpi->driver); 11071 kfree(ibm->acpi->driver); 11072 ibm->acpi->driver = NULL; 11073 ibm->flags.acpi_driver_registered = 0; 11074 } 11075 11076 if (ibm->flags.init_called && ibm->exit) { 11077 ibm->exit(); 11078 ibm->flags.init_called = 0; 11079 } 11080 11081 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 11082 } 11083 11084 static int __init ibm_init(struct ibm_init_struct *iibm) 11085 { 11086 int ret; 11087 struct ibm_struct *ibm = iibm->data; 11088 struct proc_dir_entry *entry; 11089 11090 BUG_ON(ibm == NULL); 11091 11092 INIT_LIST_HEAD(&ibm->all_drivers); 11093 11094 if (ibm->flags.experimental && !experimental) 11095 return 0; 11096 11097 dbg_printk(TPACPI_DBG_INIT, 11098 "probing for %s\n", ibm->name); 11099 11100 if (iibm->init) { 11101 ret = iibm->init(iibm); 11102 if (ret > 0 || ret == -ENODEV) 11103 return 0; /* subdriver functionality not available */ 11104 if (ret) 11105 return ret; 11106 11107 ibm->flags.init_called = 1; 11108 } 11109 11110 if (ibm->acpi) { 11111 if (ibm->acpi->hid) { 11112 ret = register_tpacpi_subdriver(ibm); 11113 if (ret) 11114 goto err_out; 11115 } 11116 11117 if (ibm->acpi->notify) { 11118 ret = setup_acpi_notify(ibm); 11119 if (ret == -ENODEV) { 11120 pr_notice("disabling subdriver %s\n", 11121 ibm->name); 11122 ret = 0; 11123 goto err_out; 11124 } 11125 if (ret < 0) 11126 goto err_out; 11127 } 11128 } 11129 11130 dbg_printk(TPACPI_DBG_INIT, 11131 "%s installed\n", ibm->name); 11132 11133 if (ibm->read) { 11134 umode_t mode = iibm->base_procfs_mode; 11135 11136 if (!mode) 11137 mode = S_IRUGO; 11138 if (ibm->write) 11139 mode |= S_IWUSR; 11140 entry = proc_create_data(ibm->name, mode, proc_dir, 11141 &dispatch_proc_ops, ibm); 11142 if (!entry) { 11143 pr_err("unable to create proc entry %s\n", ibm->name); 11144 ret = -ENODEV; 11145 goto err_out; 11146 } 11147 ibm->flags.proc_created = 1; 11148 } 11149 11150 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 11151 11152 return 0; 11153 11154 err_out: 11155 dbg_printk(TPACPI_DBG_INIT, 11156 "%s: at error exit path with result %d\n", 11157 ibm->name, ret); 11158 11159 ibm_exit(ibm); 11160 return (ret < 0) ? ret : 0; 11161 } 11162 11163 /* Probing */ 11164 11165 static char __init tpacpi_parse_fw_id(const char * const s, 11166 u32 *model, u16 *release) 11167 { 11168 int i; 11169 11170 if (!s || strlen(s) < 8) 11171 goto invalid; 11172 11173 for (i = 0; i < 8; i++) 11174 if (!((s[i] >= '0' && s[i] <= '9') || 11175 (s[i] >= 'A' && s[i] <= 'Z'))) 11176 goto invalid; 11177 11178 /* 11179 * Most models: xxyTkkWW (#.##c) 11180 * Ancient 570/600 and -SL lacks (#.##c) 11181 */ 11182 if (s[3] == 'T' || s[3] == 'N') { 11183 *model = TPID(s[0], s[1]); 11184 *release = TPVER(s[4], s[5]); 11185 return s[2]; 11186 11187 /* New models: xxxyTkkW (#.##c); T550 and some others */ 11188 } else if (s[4] == 'T' || s[4] == 'N') { 11189 *model = TPID3(s[0], s[1], s[2]); 11190 *release = TPVER(s[5], s[6]); 11191 return s[3]; 11192 } 11193 11194 invalid: 11195 return '\0'; 11196 } 11197 11198 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 11199 { 11200 char *ec_fw_string = (char *) private; 11201 const char *dmi_data = (const char *)dm; 11202 /* 11203 * ThinkPad Embedded Controller Program Table on newer models 11204 * 11205 * Offset | Name | Width | Description 11206 * ---------------------------------------------------- 11207 * 0x00 | Type | BYTE | 0x8C 11208 * 0x01 | Length | BYTE | 11209 * 0x02 | Handle | WORD | Varies 11210 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 11211 * 0x0A | OEM struct offset | BYTE | 0x0B 11212 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 11213 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 11214 * 0x0D | ECP version ID | STR ID | 11215 * 0x0E | ECP release date | STR ID | 11216 */ 11217 11218 /* Return if data structure not match */ 11219 if (dm->type != 140 || dm->length < 0x0F || 11220 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 11221 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 11222 dmi_data[0x0C] != 0x01) 11223 return; 11224 11225 /* fwstr is the first 8byte string */ 11226 strncpy(ec_fw_string, dmi_data + 0x0F, 8); 11227 } 11228 11229 /* returns 0 - probe ok, or < 0 - probe error. 11230 * Probe ok doesn't mean thinkpad found. 11231 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 11232 static int __must_check __init get_thinkpad_model_data( 11233 struct thinkpad_id_data *tp) 11234 { 11235 const struct dmi_device *dev = NULL; 11236 char ec_fw_string[18] = {0}; 11237 char const *s; 11238 char t; 11239 11240 if (!tp) 11241 return -EINVAL; 11242 11243 memset(tp, 0, sizeof(*tp)); 11244 11245 if (dmi_name_in_vendors("IBM")) 11246 tp->vendor = PCI_VENDOR_ID_IBM; 11247 else if (dmi_name_in_vendors("LENOVO")) 11248 tp->vendor = PCI_VENDOR_ID_LENOVO; 11249 else 11250 return 0; 11251 11252 s = dmi_get_system_info(DMI_BIOS_VERSION); 11253 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 11254 if (s && !tp->bios_version_str) 11255 return -ENOMEM; 11256 11257 /* Really ancient ThinkPad 240X will fail this, which is fine */ 11258 t = tpacpi_parse_fw_id(tp->bios_version_str, 11259 &tp->bios_model, &tp->bios_release); 11260 if (t != 'E' && t != 'C') 11261 return 0; 11262 11263 /* 11264 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 11265 * X32 or newer, all Z series; Some models must have an 11266 * up-to-date BIOS or they will not be detected. 11267 * 11268 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11269 */ 11270 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 11271 if (sscanf(dev->name, 11272 "IBM ThinkPad Embedded Controller -[%17c", 11273 ec_fw_string) == 1) { 11274 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 11275 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 11276 break; 11277 } 11278 } 11279 11280 /* Newer ThinkPads have different EC program info table */ 11281 if (!ec_fw_string[0]) 11282 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 11283 11284 if (ec_fw_string[0]) { 11285 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 11286 if (!tp->ec_version_str) 11287 return -ENOMEM; 11288 11289 t = tpacpi_parse_fw_id(ec_fw_string, 11290 &tp->ec_model, &tp->ec_release); 11291 if (t != 'H') { 11292 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 11293 ec_fw_string); 11294 pr_notice("please report this to %s\n", TPACPI_MAIL); 11295 } 11296 } 11297 11298 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 11299 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 11300 tp->model_str = kstrdup(s, GFP_KERNEL); 11301 if (!tp->model_str) 11302 return -ENOMEM; 11303 } else { 11304 s = dmi_get_system_info(DMI_BIOS_VENDOR); 11305 if (s && !(strncasecmp(s, "Lenovo", 6))) { 11306 tp->model_str = kstrdup(s, GFP_KERNEL); 11307 if (!tp->model_str) 11308 return -ENOMEM; 11309 } 11310 } 11311 11312 s = dmi_get_system_info(DMI_PRODUCT_NAME); 11313 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 11314 if (s && !tp->nummodel_str) 11315 return -ENOMEM; 11316 11317 return 0; 11318 } 11319 11320 static int __init probe_for_thinkpad(void) 11321 { 11322 int is_thinkpad; 11323 11324 if (acpi_disabled) 11325 return -ENODEV; 11326 11327 /* It would be dangerous to run the driver in this case */ 11328 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 11329 return -ENODEV; 11330 11331 /* 11332 * Non-ancient models have better DMI tagging, but very old models 11333 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 11334 */ 11335 is_thinkpad = (thinkpad_id.model_str != NULL) || 11336 (thinkpad_id.ec_model != 0) || 11337 tpacpi_is_fw_known(); 11338 11339 /* The EC handler is required */ 11340 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 11341 if (!ec_handle) { 11342 if (is_thinkpad) 11343 pr_err("Not yet supported ThinkPad detected!\n"); 11344 return -ENODEV; 11345 } 11346 11347 if (!is_thinkpad && !force_load) 11348 return -ENODEV; 11349 11350 return 0; 11351 } 11352 11353 static void __init thinkpad_acpi_init_banner(void) 11354 { 11355 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 11356 pr_info("%s\n", TPACPI_URL); 11357 11358 pr_info("ThinkPad BIOS %s, EC %s\n", 11359 (thinkpad_id.bios_version_str) ? 11360 thinkpad_id.bios_version_str : "unknown", 11361 (thinkpad_id.ec_version_str) ? 11362 thinkpad_id.ec_version_str : "unknown"); 11363 11364 BUG_ON(!thinkpad_id.vendor); 11365 11366 if (thinkpad_id.model_str) 11367 pr_info("%s %s, model %s\n", 11368 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 11369 "IBM" : ((thinkpad_id.vendor == 11370 PCI_VENDOR_ID_LENOVO) ? 11371 "Lenovo" : "Unknown vendor"), 11372 thinkpad_id.model_str, 11373 (thinkpad_id.nummodel_str) ? 11374 thinkpad_id.nummodel_str : "unknown"); 11375 } 11376 11377 /* Module init, exit, parameters */ 11378 11379 static struct ibm_init_struct ibms_init[] __initdata = { 11380 { 11381 .data = &thinkpad_acpi_driver_data, 11382 }, 11383 { 11384 .init = hotkey_init, 11385 .data = &hotkey_driver_data, 11386 }, 11387 { 11388 .init = bluetooth_init, 11389 .data = &bluetooth_driver_data, 11390 }, 11391 { 11392 .init = wan_init, 11393 .data = &wan_driver_data, 11394 }, 11395 { 11396 .init = uwb_init, 11397 .data = &uwb_driver_data, 11398 }, 11399 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 11400 { 11401 .init = video_init, 11402 .base_procfs_mode = S_IRUSR, 11403 .data = &video_driver_data, 11404 }, 11405 #endif 11406 { 11407 .init = kbdlight_init, 11408 .data = &kbdlight_driver_data, 11409 }, 11410 { 11411 .init = light_init, 11412 .data = &light_driver_data, 11413 }, 11414 { 11415 .init = cmos_init, 11416 .data = &cmos_driver_data, 11417 }, 11418 { 11419 .init = led_init, 11420 .data = &led_driver_data, 11421 }, 11422 { 11423 .init = beep_init, 11424 .data = &beep_driver_data, 11425 }, 11426 { 11427 .init = thermal_init, 11428 .data = &thermal_driver_data, 11429 }, 11430 { 11431 .init = brightness_init, 11432 .data = &brightness_driver_data, 11433 }, 11434 { 11435 .init = volume_init, 11436 .data = &volume_driver_data, 11437 }, 11438 { 11439 .init = fan_init, 11440 .data = &fan_driver_data, 11441 }, 11442 { 11443 .init = mute_led_init, 11444 .data = &mute_led_driver_data, 11445 }, 11446 { 11447 .init = tpacpi_battery_init, 11448 .data = &battery_driver_data, 11449 }, 11450 { 11451 .init = tpacpi_lcdshadow_init, 11452 .data = &lcdshadow_driver_data, 11453 }, 11454 { 11455 .init = tpacpi_proxsensor_init, 11456 .data = &proxsensor_driver_data, 11457 }, 11458 { 11459 .init = tpacpi_dytc_profile_init, 11460 .data = &dytc_profile_driver_data, 11461 }, 11462 { 11463 .init = tpacpi_kbdlang_init, 11464 .data = &kbdlang_driver_data, 11465 }, 11466 { 11467 .init = tpacpi_dprc_init, 11468 .data = &dprc_driver_data, 11469 }, 11470 }; 11471 11472 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 11473 { 11474 unsigned int i; 11475 struct ibm_struct *ibm; 11476 11477 if (!kp || !kp->name || !val) 11478 return -EINVAL; 11479 11480 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11481 ibm = ibms_init[i].data; 11482 if (!ibm || !ibm->name) 11483 continue; 11484 11485 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 11486 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 11487 return -ENOSPC; 11488 strcpy(ibms_init[i].param, val); 11489 return 0; 11490 } 11491 } 11492 11493 return -EINVAL; 11494 } 11495 11496 module_param(experimental, int, 0444); 11497 MODULE_PARM_DESC(experimental, 11498 "Enables experimental features when non-zero"); 11499 11500 module_param_named(debug, dbg_level, uint, 0); 11501 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 11502 11503 module_param(force_load, bool, 0444); 11504 MODULE_PARM_DESC(force_load, 11505 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 11506 11507 module_param_named(fan_control, fan_control_allowed, bool, 0444); 11508 MODULE_PARM_DESC(fan_control, 11509 "Enables setting fan parameters features when true"); 11510 11511 module_param_named(brightness_mode, brightness_mode, uint, 0444); 11512 MODULE_PARM_DESC(brightness_mode, 11513 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 11514 11515 module_param(brightness_enable, uint, 0444); 11516 MODULE_PARM_DESC(brightness_enable, 11517 "Enables backlight control when 1, disables when 0"); 11518 11519 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 11520 module_param_named(volume_mode, volume_mode, uint, 0444); 11521 MODULE_PARM_DESC(volume_mode, 11522 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 11523 11524 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 11525 MODULE_PARM_DESC(volume_capabilities, 11526 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 11527 11528 module_param_named(volume_control, volume_control_allowed, bool, 0444); 11529 MODULE_PARM_DESC(volume_control, 11530 "Enables software override for the console audio control when true"); 11531 11532 module_param_named(software_mute, software_mute_requested, bool, 0444); 11533 MODULE_PARM_DESC(software_mute, 11534 "Request full software mute control"); 11535 11536 /* ALSA module API parameters */ 11537 module_param_named(index, alsa_index, int, 0444); 11538 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 11539 module_param_named(id, alsa_id, charp, 0444); 11540 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 11541 module_param_named(enable, alsa_enable, bool, 0444); 11542 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 11543 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 11544 11545 /* The module parameter can't be read back, that's why 0 is used here */ 11546 #define TPACPI_PARAM(feature) \ 11547 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 11548 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 11549 11550 TPACPI_PARAM(hotkey); 11551 TPACPI_PARAM(bluetooth); 11552 TPACPI_PARAM(video); 11553 TPACPI_PARAM(light); 11554 TPACPI_PARAM(cmos); 11555 TPACPI_PARAM(led); 11556 TPACPI_PARAM(beep); 11557 TPACPI_PARAM(brightness); 11558 TPACPI_PARAM(volume); 11559 TPACPI_PARAM(fan); 11560 11561 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11562 module_param(dbg_wlswemul, uint, 0444); 11563 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 11564 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 11565 MODULE_PARM_DESC(wlsw_state, 11566 "Initial state of the emulated WLSW switch"); 11567 11568 module_param(dbg_bluetoothemul, uint, 0444); 11569 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 11570 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 11571 MODULE_PARM_DESC(bluetooth_state, 11572 "Initial state of the emulated bluetooth switch"); 11573 11574 module_param(dbg_wwanemul, uint, 0444); 11575 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 11576 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 11577 MODULE_PARM_DESC(wwan_state, 11578 "Initial state of the emulated WWAN switch"); 11579 11580 module_param(dbg_uwbemul, uint, 0444); 11581 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 11582 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 11583 MODULE_PARM_DESC(uwb_state, 11584 "Initial state of the emulated UWB switch"); 11585 #endif 11586 11587 static void thinkpad_acpi_module_exit(void) 11588 { 11589 struct ibm_struct *ibm, *itmp; 11590 11591 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 11592 11593 #ifdef CONFIG_SUSPEND 11594 if (tp_features.quirks && tp_features.quirks->s2idle_bug_mmio) 11595 acpi_unregister_lps0_dev(&thinkpad_acpi_s2idle_dev_ops); 11596 #endif 11597 if (tpacpi_hwmon) 11598 hwmon_device_unregister(tpacpi_hwmon); 11599 if (tp_features.sensors_pdrv_registered) 11600 platform_driver_unregister(&tpacpi_hwmon_pdriver); 11601 if (tp_features.platform_drv_registered) 11602 platform_driver_unregister(&tpacpi_pdriver); 11603 11604 list_for_each_entry_safe_reverse(ibm, itmp, 11605 &tpacpi_all_drivers, 11606 all_drivers) { 11607 ibm_exit(ibm); 11608 } 11609 11610 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 11611 11612 if (tpacpi_inputdev) { 11613 if (tp_features.input_device_registered) 11614 input_unregister_device(tpacpi_inputdev); 11615 else 11616 input_free_device(tpacpi_inputdev); 11617 kfree(hotkey_keycode_map); 11618 } 11619 11620 if (tpacpi_sensors_pdev) 11621 platform_device_unregister(tpacpi_sensors_pdev); 11622 if (tpacpi_pdev) 11623 platform_device_unregister(tpacpi_pdev); 11624 if (proc_dir) 11625 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 11626 if (tpacpi_wq) 11627 destroy_workqueue(tpacpi_wq); 11628 11629 kfree(thinkpad_id.bios_version_str); 11630 kfree(thinkpad_id.ec_version_str); 11631 kfree(thinkpad_id.model_str); 11632 kfree(thinkpad_id.nummodel_str); 11633 } 11634 11635 11636 static int __init thinkpad_acpi_module_init(void) 11637 { 11638 const struct dmi_system_id *dmi_id; 11639 int ret, i; 11640 11641 tpacpi_lifecycle = TPACPI_LIFE_INIT; 11642 11643 /* Driver-level probe */ 11644 11645 ret = get_thinkpad_model_data(&thinkpad_id); 11646 if (ret) { 11647 pr_err("unable to get DMI data: %d\n", ret); 11648 thinkpad_acpi_module_exit(); 11649 return ret; 11650 } 11651 ret = probe_for_thinkpad(); 11652 if (ret) { 11653 thinkpad_acpi_module_exit(); 11654 return ret; 11655 } 11656 11657 /* Driver initialization */ 11658 11659 thinkpad_acpi_init_banner(); 11660 tpacpi_check_outdated_fw(); 11661 11662 TPACPI_ACPIHANDLE_INIT(ecrd); 11663 TPACPI_ACPIHANDLE_INIT(ecwr); 11664 11665 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 11666 if (!tpacpi_wq) { 11667 thinkpad_acpi_module_exit(); 11668 return -ENOMEM; 11669 } 11670 11671 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 11672 if (!proc_dir) { 11673 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 11674 thinkpad_acpi_module_exit(); 11675 return -ENODEV; 11676 } 11677 11678 dmi_id = dmi_first_match(fwbug_list); 11679 if (dmi_id) 11680 tp_features.quirks = dmi_id->driver_data; 11681 11682 /* Device initialization */ 11683 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 11684 NULL, 0); 11685 if (IS_ERR(tpacpi_pdev)) { 11686 ret = PTR_ERR(tpacpi_pdev); 11687 tpacpi_pdev = NULL; 11688 pr_err("unable to register platform device\n"); 11689 thinkpad_acpi_module_exit(); 11690 return ret; 11691 } 11692 tpacpi_sensors_pdev = platform_device_register_simple( 11693 TPACPI_HWMON_DRVR_NAME, 11694 -1, NULL, 0); 11695 if (IS_ERR(tpacpi_sensors_pdev)) { 11696 ret = PTR_ERR(tpacpi_sensors_pdev); 11697 tpacpi_sensors_pdev = NULL; 11698 pr_err("unable to register hwmon platform device\n"); 11699 thinkpad_acpi_module_exit(); 11700 return ret; 11701 } 11702 11703 mutex_init(&tpacpi_inputdev_send_mutex); 11704 tpacpi_inputdev = input_allocate_device(); 11705 if (!tpacpi_inputdev) { 11706 thinkpad_acpi_module_exit(); 11707 return -ENOMEM; 11708 } else { 11709 /* Prepare input device, but don't register */ 11710 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 11711 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 11712 tpacpi_inputdev->id.bustype = BUS_HOST; 11713 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 11714 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 11715 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 11716 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 11717 } 11718 11719 /* Init subdriver dependencies */ 11720 tpacpi_detect_brightness_capabilities(); 11721 11722 /* Init subdrivers */ 11723 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11724 ret = ibm_init(&ibms_init[i]); 11725 if (ret >= 0 && *ibms_init[i].param) 11726 ret = ibms_init[i].data->write(ibms_init[i].param); 11727 if (ret < 0) { 11728 thinkpad_acpi_module_exit(); 11729 return ret; 11730 } 11731 } 11732 11733 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 11734 11735 ret = platform_driver_register(&tpacpi_pdriver); 11736 if (ret) { 11737 pr_err("unable to register main platform driver\n"); 11738 thinkpad_acpi_module_exit(); 11739 return ret; 11740 } 11741 tp_features.platform_drv_registered = 1; 11742 11743 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 11744 if (ret) { 11745 pr_err("unable to register hwmon platform driver\n"); 11746 thinkpad_acpi_module_exit(); 11747 return ret; 11748 } 11749 tp_features.sensors_pdrv_registered = 1; 11750 11751 tpacpi_hwmon = hwmon_device_register_with_groups( 11752 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, tpacpi_hwmon_groups); 11753 if (IS_ERR(tpacpi_hwmon)) { 11754 ret = PTR_ERR(tpacpi_hwmon); 11755 tpacpi_hwmon = NULL; 11756 pr_err("unable to register hwmon device\n"); 11757 thinkpad_acpi_module_exit(); 11758 return ret; 11759 } 11760 11761 ret = input_register_device(tpacpi_inputdev); 11762 if (ret < 0) { 11763 pr_err("unable to register input device\n"); 11764 thinkpad_acpi_module_exit(); 11765 return ret; 11766 } else { 11767 tp_features.input_device_registered = 1; 11768 } 11769 11770 #ifdef CONFIG_SUSPEND 11771 if (tp_features.quirks && tp_features.quirks->s2idle_bug_mmio) { 11772 if (!acpi_register_lps0_dev(&thinkpad_acpi_s2idle_dev_ops)) 11773 pr_info("Using s2idle quirk to avoid %s platform firmware bug\n", 11774 (dmi_id && dmi_id->ident) ? dmi_id->ident : ""); 11775 } 11776 #endif 11777 return 0; 11778 } 11779 11780 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 11781 11782 /* 11783 * This will autoload the driver in almost every ThinkPad 11784 * in widespread use. 11785 * 11786 * Only _VERY_ old models, like the 240, 240x and 570 lack 11787 * the HKEY event interface. 11788 */ 11789 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 11790 11791 /* 11792 * DMI matching for module autoloading 11793 * 11794 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11795 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 11796 * 11797 * Only models listed in thinkwiki will be supported, so add yours 11798 * if it is not there yet. 11799 */ 11800 #define IBM_BIOS_MODULE_ALIAS(__type) \ 11801 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 11802 11803 /* Ancient thinkpad BIOSes have to be identified by 11804 * BIOS type or model number, and there are far less 11805 * BIOS types than model numbers... */ 11806 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 11807 11808 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 11809 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 11810 MODULE_DESCRIPTION(TPACPI_DESC); 11811 MODULE_VERSION(TPACPI_VERSION); 11812 MODULE_LICENSE("GPL"); 11813 11814 module_init(thinkpad_acpi_module_init); 11815 module_exit(thinkpad_acpi_module_exit); 11816