1 /* 2 * Copyright 2008 Intel Corporation <hong.liu@intel.com> 3 * Copyright 2008 Red Hat <mjg@redhat.com> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sub license, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 24 * SOFTWARE. 25 * 26 */ 27 28 #include <linux/dmi.h> 29 30 #include <drm/drmP.h> 31 #include <drm/i915_drm.h> 32 #include "i915_drv.h" 33 #include "intel_drv.h" 34 35 #include <contrib/dev/acpica/source/include/acpi.h> 36 #include <contrib/dev/acpica/source/include/accommon.h> 37 #include <dev/acpica/acpivar.h> 38 39 #define PCI_ASLE 0xe4 40 #define PCI_ASLS 0xfc 41 #define PCI_SWSCI 0xe8 42 #define PCI_SWSCI_SCISEL (1 << 15) 43 #define PCI_SWSCI_GSSCIE (1 << 0) 44 45 #define OPREGION_HEADER_OFFSET 0 46 #define OPREGION_ACPI_OFFSET 0x100 47 #define ACPI_CLID 0x01ac /* current lid state indicator */ 48 #define ACPI_CDCK 0x01b0 /* current docking state indicator */ 49 #define OPREGION_SWSCI_OFFSET 0x200 50 #define OPREGION_ASLE_OFFSET 0x300 51 #define OPREGION_VBT_OFFSET 0x400 52 #define OPREGION_ASLE_EXT_OFFSET 0x1C00 53 54 #define OPREGION_SIGNATURE "IntelGraphicsMem" 55 #define MBOX_ACPI (1<<0) 56 #define MBOX_SWSCI (1<<1) 57 #define MBOX_ASLE (1<<2) 58 #define MBOX_ASLE_EXT (1<<4) 59 60 struct opregion_header { 61 u8 signature[16]; 62 u32 size; 63 u32 opregion_ver; 64 u8 bios_ver[32]; 65 u8 vbios_ver[16]; 66 u8 driver_ver[16]; 67 u32 mboxes; 68 u32 driver_model; 69 u32 pcon; 70 u8 dver[32]; 71 u8 rsvd[124]; 72 } __packed; 73 74 /* OpRegion mailbox #1: public ACPI methods */ 75 struct opregion_acpi { 76 u32 drdy; /* driver readiness */ 77 u32 csts; /* notification status */ 78 u32 cevt; /* current event */ 79 u8 rsvd1[20]; 80 u32 didl[8]; /* supported display devices ID list */ 81 u32 cpdl[8]; /* currently presented display list */ 82 u32 cadl[8]; /* currently active display list */ 83 u32 nadl[8]; /* next active devices list */ 84 u32 aslp; /* ASL sleep time-out */ 85 u32 tidx; /* toggle table index */ 86 u32 chpd; /* current hotplug enable indicator */ 87 u32 clid; /* current lid state*/ 88 u32 cdck; /* current docking state */ 89 u32 sxsw; /* Sx state resume */ 90 u32 evts; /* ASL supported events */ 91 u32 cnot; /* current OS notification */ 92 u32 nrdy; /* driver status */ 93 u32 did2[7]; /* extended supported display devices ID list */ 94 u32 cpd2[7]; /* extended attached display devices list */ 95 u8 rsvd2[4]; 96 } __packed; 97 98 /* OpRegion mailbox #2: SWSCI */ 99 struct opregion_swsci { 100 u32 scic; /* SWSCI command|status|data */ 101 u32 parm; /* command parameters */ 102 u32 dslp; /* driver sleep time-out */ 103 u8 rsvd[244]; 104 } __packed; 105 106 /* OpRegion mailbox #3: ASLE */ 107 struct opregion_asle { 108 u32 ardy; /* driver readiness */ 109 u32 aslc; /* ASLE interrupt command */ 110 u32 tche; /* technology enabled indicator */ 111 u32 alsi; /* current ALS illuminance reading */ 112 u32 bclp; /* backlight brightness to set */ 113 u32 pfit; /* panel fitting state */ 114 u32 cblv; /* current brightness level */ 115 u16 bclm[20]; /* backlight level duty cycle mapping table */ 116 u32 cpfm; /* current panel fitting mode */ 117 u32 epfm; /* enabled panel fitting modes */ 118 u8 plut[74]; /* panel LUT and identifier */ 119 u32 pfmb; /* PWM freq and min brightness */ 120 u32 cddv; /* color correction default values */ 121 u32 pcft; /* power conservation features */ 122 u32 srot; /* supported rotation angles */ 123 u32 iuer; /* IUER events */ 124 u64 fdss; 125 u32 fdsp; 126 u32 stat; 127 u64 rvda; /* Physical address of raw vbt data */ 128 u32 rvds; /* Size of raw vbt data */ 129 u8 rsvd[58]; 130 } __packed; 131 132 /* OpRegion mailbox #5: ASLE ext */ 133 struct opregion_asle_ext { 134 u32 phed; /* Panel Header */ 135 u8 bddc[256]; /* Panel EDID */ 136 u8 rsvd[764]; 137 } __packed; 138 139 /* Driver readiness indicator */ 140 #define ASLE_ARDY_READY (1 << 0) 141 #define ASLE_ARDY_NOT_READY (0 << 0) 142 143 /* ASLE Interrupt Command (ASLC) bits */ 144 #define ASLC_SET_ALS_ILLUM (1 << 0) 145 #define ASLC_SET_BACKLIGHT (1 << 1) 146 #define ASLC_SET_PFIT (1 << 2) 147 #define ASLC_SET_PWM_FREQ (1 << 3) 148 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4) 149 #define ASLC_BUTTON_ARRAY (1 << 5) 150 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6) 151 #define ASLC_DOCKING_INDICATOR (1 << 7) 152 #define ASLC_ISCT_STATE_CHANGE (1 << 8) 153 #define ASLC_REQ_MSK 0x1ff 154 /* response bits */ 155 #define ASLC_ALS_ILLUM_FAILED (1 << 10) 156 #define ASLC_BACKLIGHT_FAILED (1 << 12) 157 #define ASLC_PFIT_FAILED (1 << 14) 158 #define ASLC_PWM_FREQ_FAILED (1 << 16) 159 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18) 160 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20) 161 #define ASLC_CONVERTIBLE_FAILED (1 << 22) 162 #define ASLC_DOCKING_FAILED (1 << 24) 163 #define ASLC_ISCT_STATE_FAILED (1 << 26) 164 165 /* Technology enabled indicator */ 166 #define ASLE_TCHE_ALS_EN (1 << 0) 167 #define ASLE_TCHE_BLC_EN (1 << 1) 168 #define ASLE_TCHE_PFIT_EN (1 << 2) 169 #define ASLE_TCHE_PFMB_EN (1 << 3) 170 171 /* ASLE backlight brightness to set */ 172 #define ASLE_BCLP_VALID (1<<31) 173 #define ASLE_BCLP_MSK (~(1<<31)) 174 175 /* ASLE panel fitting request */ 176 #define ASLE_PFIT_VALID (1<<31) 177 #define ASLE_PFIT_CENTER (1<<0) 178 #define ASLE_PFIT_STRETCH_TEXT (1<<1) 179 #define ASLE_PFIT_STRETCH_GFX (1<<2) 180 181 /* PWM frequency and minimum brightness */ 182 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) 183 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) 184 #define ASLE_PFMB_PWM_MASK (0x7ffffe00) 185 #define ASLE_PFMB_PWM_VALID (1<<31) 186 187 #define ASLE_CBLV_VALID (1<<31) 188 189 /* IUER */ 190 #define ASLE_IUER_DOCKING (1 << 7) 191 #define ASLE_IUER_CONVERTIBLE (1 << 6) 192 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4) 193 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3) 194 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2) 195 #define ASLE_IUER_WINDOWS_BTN (1 << 1) 196 #define ASLE_IUER_POWER_BTN (1 << 0) 197 198 /* Software System Control Interrupt (SWSCI) */ 199 #define SWSCI_SCIC_INDICATOR (1 << 0) 200 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 201 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) 202 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 203 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) 204 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 205 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) 206 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 207 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) 208 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 209 210 #define SWSCI_FUNCTION_CODE(main, sub) \ 211 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ 212 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) 213 214 /* SWSCI: Get BIOS Data (GBDA) */ 215 #define SWSCI_GBDA 4 216 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) 217 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) 218 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) 219 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) 220 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) 221 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) 222 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) 223 224 /* SWSCI: System BIOS Callbacks (SBCB) */ 225 #define SWSCI_SBCB 6 226 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) 227 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) 228 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) 229 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) 230 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) 231 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) 232 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) 233 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) 234 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) 235 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) 236 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) 237 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) 238 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) 239 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) 240 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) 241 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) 242 243 #define ACPI_OTHER_OUTPUT (0<<8) 244 #define ACPI_VGA_OUTPUT (1<<8) 245 #define ACPI_TV_OUTPUT (2<<8) 246 #define ACPI_DIGITAL_OUTPUT (3<<8) 247 #define ACPI_LVDS_OUTPUT (4<<8) 248 249 #define MAX_DSLP 1500 250 251 #ifdef CONFIG_ACPI 252 static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out) 253 { 254 struct drm_i915_private *dev_priv = dev->dev_private; 255 struct opregion_swsci *swsci = dev_priv->opregion.swsci; 256 u32 main_function, sub_function, scic; 257 u16 pci_swsci; 258 u32 dslp; 259 260 if (!swsci) 261 return -ENODEV; 262 263 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 264 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 265 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 266 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 267 268 /* Check if we can call the function. See swsci_setup for details. */ 269 if (main_function == SWSCI_SBCB) { 270 if ((dev_priv->opregion.swsci_sbcb_sub_functions & 271 (1 << sub_function)) == 0) 272 return -EINVAL; 273 } else if (main_function == SWSCI_GBDA) { 274 if ((dev_priv->opregion.swsci_gbda_sub_functions & 275 (1 << sub_function)) == 0) 276 return -EINVAL; 277 } 278 279 /* Driver sleep timeout in ms. */ 280 dslp = swsci->dslp; 281 if (!dslp) { 282 /* The spec says 2ms should be the default, but it's too small 283 * for some machines. */ 284 dslp = 50; 285 } else if (dslp > MAX_DSLP) { 286 /* Hey bios, trust must be earned. */ 287 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 288 "using %u ms instead\n", dslp, MAX_DSLP); 289 dslp = MAX_DSLP; 290 } 291 292 /* The spec tells us to do this, but we are the only user... */ 293 scic = swsci->scic; 294 if (scic & SWSCI_SCIC_INDICATOR) { 295 DRM_DEBUG_DRIVER("SWSCI request already in progress\n"); 296 return -EBUSY; 297 } 298 299 scic = function | SWSCI_SCIC_INDICATOR; 300 301 swsci->parm = parm; 302 swsci->scic = scic; 303 304 /* Ensure SCI event is selected and event trigger is cleared. */ 305 pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci); 306 if (!(pci_swsci & PCI_SWSCI_SCISEL) || (pci_swsci & PCI_SWSCI_GSSCIE)) { 307 pci_swsci |= PCI_SWSCI_SCISEL; 308 pci_swsci &= ~PCI_SWSCI_GSSCIE; 309 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); 310 } 311 312 /* Use event trigger to tell bios to check the mail. */ 313 pci_swsci |= PCI_SWSCI_GSSCIE; 314 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); 315 316 /* Poll for the result. */ 317 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0) 318 if (wait_for(C, dslp)) { 319 DRM_DEBUG_DRIVER("SWSCI request timed out\n"); 320 return -ETIMEDOUT; 321 } 322 323 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 324 SWSCI_SCIC_EXIT_STATUS_SHIFT; 325 326 /* Note: scic == 0 is an error! */ 327 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 328 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic); 329 return -EIO; 330 } 331 332 if (parm_out) 333 *parm_out = swsci->parm; 334 335 return 0; 336 337 #undef C 338 } 339 340 #define DISPLAY_TYPE_CRT 0 341 #define DISPLAY_TYPE_TV 1 342 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 343 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 344 345 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 346 bool enable) 347 { 348 struct drm_device *dev = intel_encoder->base.dev; 349 u32 parm = 0; 350 u32 type = 0; 351 u32 port; 352 353 /* don't care about old stuff for now */ 354 if (!HAS_DDI(dev)) 355 return 0; 356 357 if (intel_encoder->type == INTEL_OUTPUT_DSI) 358 port = 0; 359 else 360 port = intel_ddi_get_encoder_port(intel_encoder); 361 362 if (port == PORT_E) { 363 port = 0; 364 } else { 365 parm |= 1 << port; 366 port++; 367 } 368 369 if (!enable) 370 parm |= 4 << 8; 371 372 switch (intel_encoder->type) { 373 case INTEL_OUTPUT_ANALOG: 374 type = DISPLAY_TYPE_CRT; 375 break; 376 case INTEL_OUTPUT_UNKNOWN: 377 case INTEL_OUTPUT_DISPLAYPORT: 378 case INTEL_OUTPUT_HDMI: 379 case INTEL_OUTPUT_DP_MST: 380 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 381 break; 382 case INTEL_OUTPUT_EDP: 383 case INTEL_OUTPUT_DSI: 384 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 385 break; 386 default: 387 WARN_ONCE(1, "unsupported intel_encoder type %d\n", 388 intel_encoder->type); 389 return -EINVAL; 390 } 391 392 parm |= type << (16 + port * 3); 393 394 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 395 } 396 397 static const struct { 398 pci_power_t pci_power_state; 399 u32 parm; 400 } power_state_map[] = { 401 { PCI_D0, 0x00 }, 402 { PCI_D1, 0x01 }, 403 { PCI_D2, 0x02 }, 404 { PCI_D3hot, 0x04 }, 405 { PCI_D3cold, 0x04 }, 406 }; 407 408 int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) 409 { 410 int i; 411 412 if (!HAS_DDI(dev)) 413 return 0; 414 415 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 416 if (state == power_state_map[i].pci_power_state) 417 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE, 418 power_state_map[i].parm, NULL); 419 } 420 421 return -EINVAL; 422 } 423 424 static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) 425 { 426 struct drm_i915_private *dev_priv = dev->dev_private; 427 struct intel_connector *connector; 428 struct opregion_asle *asle = dev_priv->opregion.asle; 429 430 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); 431 432 #ifndef __DragonFly__ 433 if (acpi_video_get_backlight_type() == acpi_backlight_native) { 434 DRM_DEBUG_KMS("opregion backlight request ignored\n"); 435 return 0; 436 } 437 #endif 438 439 if (!(bclp & ASLE_BCLP_VALID)) 440 return ASLC_BACKLIGHT_FAILED; 441 442 bclp &= ASLE_BCLP_MSK; 443 if (bclp > 255) 444 return ASLC_BACKLIGHT_FAILED; 445 446 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 447 448 /* 449 * Update backlight on all connectors that support backlight (usually 450 * only one). 451 */ 452 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); 453 for_each_intel_connector(dev, connector) 454 intel_panel_set_backlight_acpi(connector, bclp, 255); 455 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID; 456 457 drm_modeset_unlock(&dev->mode_config.connection_mutex); 458 459 460 return 0; 461 } 462 463 static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) 464 { 465 /* alsi is the current ALS reading in lux. 0 indicates below sensor 466 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 467 DRM_DEBUG_DRIVER("Illum is not supported\n"); 468 return ASLC_ALS_ILLUM_FAILED; 469 } 470 471 static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) 472 { 473 DRM_DEBUG_DRIVER("PWM freq is not supported\n"); 474 return ASLC_PWM_FREQ_FAILED; 475 } 476 477 static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) 478 { 479 /* Panel fitting is currently controlled by the X code, so this is a 480 noop until modesetting support works fully */ 481 DRM_DEBUG_DRIVER("Pfit is not supported\n"); 482 return ASLC_PFIT_FAILED; 483 } 484 485 static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot) 486 { 487 DRM_DEBUG_DRIVER("SROT is not supported\n"); 488 return ASLC_ROTATION_ANGLES_FAILED; 489 } 490 491 static u32 asle_set_button_array(struct drm_device *dev, u32 iuer) 492 { 493 if (!iuer) 494 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n"); 495 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 496 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n"); 497 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 498 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n"); 499 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 500 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n"); 501 if (iuer & ASLE_IUER_WINDOWS_BTN) 502 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n"); 503 if (iuer & ASLE_IUER_POWER_BTN) 504 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n"); 505 506 return ASLC_BUTTON_ARRAY_FAILED; 507 } 508 509 static u32 asle_set_convertible(struct drm_device *dev, u32 iuer) 510 { 511 if (iuer & ASLE_IUER_CONVERTIBLE) 512 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n"); 513 else 514 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n"); 515 516 return ASLC_CONVERTIBLE_FAILED; 517 } 518 519 static u32 asle_set_docking(struct drm_device *dev, u32 iuer) 520 { 521 if (iuer & ASLE_IUER_DOCKING) 522 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n"); 523 else 524 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n"); 525 526 return ASLC_DOCKING_FAILED; 527 } 528 529 static u32 asle_isct_state(struct drm_device *dev) 530 { 531 DRM_DEBUG_DRIVER("ISCT is not supported\n"); 532 return ASLC_ISCT_STATE_FAILED; 533 } 534 535 static void asle_work(struct work_struct *work) 536 { 537 struct intel_opregion *opregion = 538 container_of(work, struct intel_opregion, asle_work); 539 struct drm_i915_private *dev_priv = 540 container_of(opregion, struct drm_i915_private, opregion); 541 struct drm_device *dev = dev_priv->dev; 542 struct opregion_asle *asle = dev_priv->opregion.asle; 543 u32 aslc_stat = 0; 544 u32 aslc_req; 545 546 if (!asle) 547 return; 548 549 aslc_req = asle->aslc; 550 551 if (!(aslc_req & ASLC_REQ_MSK)) { 552 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n", 553 aslc_req); 554 return; 555 } 556 557 if (aslc_req & ASLC_SET_ALS_ILLUM) 558 aslc_stat |= asle_set_als_illum(dev, asle->alsi); 559 560 if (aslc_req & ASLC_SET_BACKLIGHT) 561 aslc_stat |= asle_set_backlight(dev, asle->bclp); 562 563 if (aslc_req & ASLC_SET_PFIT) 564 aslc_stat |= asle_set_pfit(dev, asle->pfit); 565 566 if (aslc_req & ASLC_SET_PWM_FREQ) 567 aslc_stat |= asle_set_pwm_freq(dev, asle->pfmb); 568 569 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 570 aslc_stat |= asle_set_supported_rotation_angles(dev, 571 asle->srot); 572 573 if (aslc_req & ASLC_BUTTON_ARRAY) 574 aslc_stat |= asle_set_button_array(dev, asle->iuer); 575 576 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 577 aslc_stat |= asle_set_convertible(dev, asle->iuer); 578 579 if (aslc_req & ASLC_DOCKING_INDICATOR) 580 aslc_stat |= asle_set_docking(dev, asle->iuer); 581 582 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 583 aslc_stat |= asle_isct_state(dev); 584 585 asle->aslc = aslc_stat; 586 } 587 588 void intel_opregion_asle_intr(struct drm_device *dev) 589 { 590 struct drm_i915_private *dev_priv = dev->dev_private; 591 592 if (dev_priv->opregion.asle) 593 schedule_work(&dev_priv->opregion.asle_work); 594 } 595 596 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 597 #define ACPI_EV_LID (1<<1) 598 #define ACPI_EV_DOCK (1<<2) 599 600 static struct intel_opregion *system_opregion; 601 602 #if 0 603 static int intel_opregion_video_event(struct notifier_block *nb, 604 unsigned long val, void *data) 605 { 606 /* The only video events relevant to opregion are 0x80. These indicate 607 either a docking event, lid switch or display switch request. In 608 Linux, these are handled by the dock, button and video drivers. 609 */ 610 611 struct acpi_bus_event *event = data; 612 struct opregion_acpi *acpi; 613 int ret = NOTIFY_OK; 614 615 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 616 return NOTIFY_DONE; 617 618 if (!system_opregion) 619 return NOTIFY_DONE; 620 621 acpi = system_opregion->acpi; 622 623 if (event->type == 0x80 && ((acpi->cevt & 1) == 0)) 624 ret = NOTIFY_BAD; 625 626 acpi->csts = 0; 627 628 return ret; 629 } 630 631 static struct notifier_block intel_opregion_notifier = { 632 .notifier_call = intel_opregion_video_event, 633 }; 634 #endif 635 636 static int acpi_is_video_device(ACPI_HANDLE devh) { 637 ACPI_HANDLE h; 638 if (ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 639 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h))) { 640 return 0; 641 } 642 return 1; 643 } 644 645 /* 646 * Initialise the DIDL field in opregion. This passes a list of devices to 647 * the firmware. Values are defined by section B.4.2 of the ACPI specification 648 * (version 3) 649 */ 650 651 static u32 get_did(struct intel_opregion *opregion, int i) 652 { 653 u32 did; 654 655 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 656 did = opregion->acpi->didl[i]; 657 } else { 658 i -= ARRAY_SIZE(opregion->acpi->didl); 659 660 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 661 return 0; 662 663 did = opregion->acpi->did2[i]; 664 } 665 666 return did; 667 } 668 669 static void set_did(struct intel_opregion *opregion, int i, u32 val) 670 { 671 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 672 opregion->acpi->didl[i] = val; 673 } else { 674 i -= ARRAY_SIZE(opregion->acpi->didl); 675 676 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 677 return; 678 679 opregion->acpi->did2[i] = val; 680 } 681 } 682 683 static void intel_didl_outputs(struct drm_device *dev) 684 { 685 struct drm_i915_private *dev_priv = dev->dev_private; 686 struct intel_opregion *opregion = &dev_priv->opregion; 687 struct drm_connector *connector; 688 ACPI_HANDLE handle, acpi_cdev, acpi_video_bus; 689 u32 device_id; 690 ACPI_STATUS status; 691 u32 temp, max_outputs; 692 int i = 0; 693 694 handle = acpi_get_handle(dev->dev->bsddev); 695 if (!handle) 696 return; 697 698 if (acpi_is_video_device(handle)) 699 acpi_video_bus = handle; 700 else { 701 acpi_cdev = NULL; 702 acpi_video_bus = NULL; 703 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, handle, acpi_cdev, 704 &acpi_cdev) != AE_NOT_FOUND) { 705 if (acpi_is_video_device(acpi_cdev)) { 706 acpi_video_bus = acpi_cdev; 707 break; 708 } 709 } 710 } 711 712 if (!acpi_video_bus) { 713 DRM_DEBUG_KMS("No ACPI video bus found\n"); 714 return; 715 } 716 717 /* 718 * In theory, did2, the extended didl, gets added at opregion version 719 * 3.0. In practice, however, we're supposed to set it for earlier 720 * versions as well, since a BIOS that doesn't understand did2 should 721 * not look at it anyway. Use a variable so we can tweak this if a need 722 * arises later. 723 */ 724 max_outputs = ARRAY_SIZE(opregion->acpi->didl) + 725 ARRAY_SIZE(opregion->acpi->did2); 726 727 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpi_video_bus, acpi_cdev, 728 &acpi_cdev) != AE_NOT_FOUND) { 729 if (i >= max_outputs) { 730 DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n", 731 max_outputs); 732 return; 733 } 734 status = acpi_GetInteger(acpi_cdev, "_ADR", &device_id); 735 if (ACPI_SUCCESS(status)) { 736 if (!device_id) 737 goto blind_set; 738 set_did(opregion, i++, (u32)(device_id & 0x0f0f)); 739 } 740 } 741 742 end: 743 DRM_DEBUG_KMS("%d outputs detected\n", i); 744 745 /* If fewer than max outputs, the list must be null terminated */ 746 if (i < max_outputs) 747 set_did(opregion, i, 0); 748 return; 749 750 blind_set: 751 i = 0; 752 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 753 int output_type = ACPI_OTHER_OUTPUT; 754 if (i >= max_outputs) { 755 DRM_DEBUG_KMS("More than %u outputs in connector list\n", 756 max_outputs); 757 return; 758 } 759 switch (connector->connector_type) { 760 case DRM_MODE_CONNECTOR_VGA: 761 case DRM_MODE_CONNECTOR_DVIA: 762 output_type = ACPI_VGA_OUTPUT; 763 break; 764 case DRM_MODE_CONNECTOR_Composite: 765 case DRM_MODE_CONNECTOR_SVIDEO: 766 case DRM_MODE_CONNECTOR_Component: 767 case DRM_MODE_CONNECTOR_9PinDIN: 768 output_type = ACPI_TV_OUTPUT; 769 break; 770 case DRM_MODE_CONNECTOR_DVII: 771 case DRM_MODE_CONNECTOR_DVID: 772 case DRM_MODE_CONNECTOR_DisplayPort: 773 case DRM_MODE_CONNECTOR_HDMIA: 774 case DRM_MODE_CONNECTOR_HDMIB: 775 output_type = ACPI_DIGITAL_OUTPUT; 776 break; 777 case DRM_MODE_CONNECTOR_LVDS: 778 output_type = ACPI_LVDS_OUTPUT; 779 break; 780 } 781 temp = get_did(opregion, i); 782 set_did(opregion, i, temp | (1 << 31) | output_type | i); 783 i++; 784 } 785 goto end; 786 } 787 788 static void intel_setup_cadls(struct drm_device *dev) 789 { 790 struct drm_i915_private *dev_priv = dev->dev_private; 791 struct intel_opregion *opregion = &dev_priv->opregion; 792 int i = 0; 793 u32 disp_id; 794 795 /* Initialize the CADL field by duplicating the DIDL values. 796 * Technically, this is not always correct as display outputs may exist, 797 * but not active. This initialization is necessary for some Clevo 798 * laptops that check this field before processing the brightness and 799 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if 800 * there are less than eight devices. */ 801 do { 802 disp_id = get_did(opregion, i); 803 opregion->acpi->cadl[i] = disp_id; 804 } while (++i < 8 && disp_id != 0); 805 } 806 807 void intel_opregion_init(struct drm_device *dev) 808 { 809 struct drm_i915_private *dev_priv = dev->dev_private; 810 struct intel_opregion *opregion = &dev_priv->opregion; 811 812 if (!opregion->header) 813 return; 814 815 if (opregion->acpi) { 816 intel_didl_outputs(dev); 817 intel_setup_cadls(dev); 818 819 /* Notify BIOS we are ready to handle ACPI video ext notifs. 820 * Right now, all the events are handled by the ACPI video module. 821 * We don't actually need to do anything with them. */ 822 opregion->acpi->csts = 0; 823 opregion->acpi->drdy = 1; 824 825 system_opregion = opregion; 826 } 827 828 if (opregion->asle) { 829 opregion->asle->tche = ASLE_TCHE_BLC_EN; 830 opregion->asle->ardy = ASLE_ARDY_READY; 831 } 832 } 833 834 void intel_opregion_fini(struct drm_device *dev) 835 { 836 struct drm_i915_private *dev_priv = dev->dev_private; 837 struct intel_opregion *opregion = &dev_priv->opregion; 838 839 if (!opregion->header) 840 return; 841 842 if (opregion->asle) 843 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 844 845 cancel_work_sync(&dev_priv->opregion.asle_work); 846 847 if (opregion->acpi) { 848 opregion->acpi->drdy = 0; 849 850 system_opregion = NULL; 851 } 852 853 /* just clear all opregion memory pointers now */ 854 iounmap(opregion->header); 855 if (opregion->rvda) { 856 iounmap(opregion->rvda); 857 opregion->rvda = NULL; 858 } 859 opregion->header = NULL; 860 opregion->acpi = NULL; 861 opregion->swsci = NULL; 862 opregion->asle = NULL; 863 opregion->vbt = NULL; 864 opregion->lid_state = NULL; 865 } 866 867 static void swsci_setup(struct drm_device *dev) 868 { 869 struct drm_i915_private *dev_priv = dev->dev_private; 870 struct intel_opregion *opregion = &dev_priv->opregion; 871 bool requested_callbacks = false; 872 u32 tmp; 873 874 /* Sub-function code 0 is okay, let's allow them. */ 875 opregion->swsci_gbda_sub_functions = 1; 876 opregion->swsci_sbcb_sub_functions = 1; 877 878 /* We use GBDA to ask for supported GBDA calls. */ 879 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 880 /* make the bits match the sub-function codes */ 881 tmp <<= 1; 882 opregion->swsci_gbda_sub_functions |= tmp; 883 } 884 885 /* 886 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 887 * must not call interfaces that are not specifically requested by the 888 * bios. 889 */ 890 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 891 /* here, the bits already match sub-function codes */ 892 opregion->swsci_sbcb_sub_functions |= tmp; 893 requested_callbacks = true; 894 } 895 896 /* 897 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 898 * the callback is _requested_. But we still can't call interfaces that 899 * are not requested. 900 */ 901 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 902 /* make the bits match the sub-function codes */ 903 u32 low = tmp & 0x7ff; 904 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 905 tmp = (high << 4) | (low << 1) | 1; 906 907 /* best guess what to do with supported wrt requested */ 908 if (requested_callbacks) { 909 u32 req = opregion->swsci_sbcb_sub_functions; 910 if ((req & tmp) != req) 911 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp); 912 /* XXX: for now, trust the requested callbacks */ 913 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 914 } else { 915 opregion->swsci_sbcb_sub_functions |= tmp; 916 } 917 } 918 919 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 920 opregion->swsci_gbda_sub_functions, 921 opregion->swsci_sbcb_sub_functions); 922 } 923 #else /* CONFIG_ACPI */ 924 static inline void swsci_setup(struct drm_device *dev) {} 925 #endif /* CONFIG_ACPI */ 926 927 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) 928 { 929 DRM_DEBUG_KMS("Falling back to manually reading VBT from " 930 "VBIOS ROM for %s\n", id->ident); 931 return 1; 932 } 933 934 static const struct dmi_system_id intel_no_opregion_vbt[] = { 935 { 936 .callback = intel_no_opregion_vbt_callback, 937 .ident = "ThinkCentre A57", 938 .matches = { 939 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 940 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), 941 }, 942 }, 943 { } 944 }; 945 946 int intel_opregion_setup(struct drm_device *dev) 947 { 948 struct drm_i915_private *dev_priv = dev->dev_private; 949 struct intel_opregion *opregion = &dev_priv->opregion; 950 u32 asls, mboxes; 951 char buf[sizeof(OPREGION_SIGNATURE)]; 952 int err = 0; 953 char *base; 954 955 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100); 956 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100); 957 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100); 958 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100); 959 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400); 960 961 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls); 962 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); 963 if (asls == 0) { 964 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); 965 return -ENOTSUP; 966 } 967 968 #ifdef CONFIG_ACPI 969 INIT_WORK(&opregion->asle_work, asle_work); 970 #endif 971 972 base = (void *)pmap_mapbios(asls, OPREGION_SIZE); 973 if (!base) 974 return -ENOMEM; 975 976 memcpy(buf, base, sizeof(buf)); 977 978 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 979 DRM_DEBUG_DRIVER("opregion signature mismatch\n"); 980 err = -EINVAL; 981 goto err_out; 982 } 983 opregion->header = (struct opregion_header *)base; 984 985 opregion->lid_state = (u32 *)(base + ACPI_CLID); 986 987 mboxes = opregion->header->mboxes; 988 if (mboxes & MBOX_ACPI) { 989 DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); 990 opregion->acpi = (struct opregion_acpi *)(base + OPREGION_ACPI_OFFSET); 991 } 992 993 if (mboxes & MBOX_SWSCI) { 994 DRM_DEBUG_DRIVER("SWSCI supported\n"); 995 opregion->swsci = (struct opregion_swsci *)(base + OPREGION_SWSCI_OFFSET); 996 swsci_setup(dev); 997 } 998 999 if (mboxes & MBOX_ASLE) { 1000 DRM_DEBUG_DRIVER("ASLE supported\n"); 1001 opregion->asle = (struct opregion_asle *)(base + OPREGION_ASLE_OFFSET); 1002 1003 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 1004 } 1005 1006 if (mboxes & MBOX_ASLE_EXT) 1007 DRM_DEBUG_DRIVER("ASLE extension supported\n"); 1008 1009 if (!dmi_check_system(intel_no_opregion_vbt)) { 1010 const void *vbt = NULL; 1011 u32 vbt_size = 0; 1012 1013 if (opregion->header->opregion_ver >= 2 && opregion->asle && 1014 opregion->asle->rvda && opregion->asle->rvds) { 1015 opregion->rvda = pmap_mapbios(opregion->asle->rvda, 1016 opregion->asle->rvds); 1017 vbt = opregion->rvda; 1018 vbt_size = opregion->asle->rvds; 1019 } 1020 1021 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 1022 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n"); 1023 opregion->vbt = vbt; 1024 opregion->vbt_size = vbt_size; 1025 } else { 1026 vbt = base + OPREGION_VBT_OFFSET; 1027 vbt_size = OPREGION_ASLE_EXT_OFFSET - OPREGION_VBT_OFFSET; 1028 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 1029 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n"); 1030 opregion->vbt = vbt; 1031 opregion->vbt_size = vbt_size; 1032 } 1033 } 1034 } 1035 1036 return 0; 1037 1038 err_out: 1039 iounmap(base); 1040 return err; 1041 } 1042