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 <drm/drmP.h> 29 #include <drm/i915_drm.h> 30 #include "i915_drv.h" 31 #include "intel_drv.h" 32 33 #include <contrib/dev/acpica/source/include/acpi.h> 34 #include <contrib/dev/acpica/source/include/accommon.h> 35 #include <dev/acpica/acpivar.h> 36 37 #define PCI_ASLE 0xe4 38 #define PCI_ASLS 0xfc 39 #define PCI_SWSCI 0xe8 40 #define PCI_SWSCI_SCISEL (1 << 15) 41 #define PCI_SWSCI_GSSCIE (1 << 0) 42 43 #define OPREGION_HEADER_OFFSET 0 44 #define OPREGION_ACPI_OFFSET 0x100 45 #define ACPI_CLID 0x01ac /* current lid state indicator */ 46 #define ACPI_CDCK 0x01b0 /* current docking state indicator */ 47 #define OPREGION_SWSCI_OFFSET 0x200 48 #define OPREGION_ASLE_OFFSET 0x300 49 #define OPREGION_VBT_OFFSET 0x400 50 51 #define OPREGION_SIGNATURE "IntelGraphicsMem" 52 #define MBOX_ACPI (1<<0) 53 #define MBOX_SWSCI (1<<1) 54 #define MBOX_ASLE (1<<2) 55 56 struct opregion_header { 57 u8 signature[16]; 58 u32 size; 59 u32 opregion_ver; 60 u8 bios_ver[32]; 61 u8 vbios_ver[16]; 62 u8 driver_ver[16]; 63 u32 mboxes; 64 u8 reserved[164]; 65 } __packed; 66 67 /* OpRegion mailbox #1: public ACPI methods */ 68 struct opregion_acpi { 69 u32 drdy; /* driver readiness */ 70 u32 csts; /* notification status */ 71 u32 cevt; /* current event */ 72 u8 rsvd1[20]; 73 u32 didl[8]; /* supported display devices ID list */ 74 u32 cpdl[8]; /* currently presented display list */ 75 u32 cadl[8]; /* currently active display list */ 76 u32 nadl[8]; /* next active devices list */ 77 u32 aslp; /* ASL sleep time-out */ 78 u32 tidx; /* toggle table index */ 79 u32 chpd; /* current hotplug enable indicator */ 80 u32 clid; /* current lid state*/ 81 u32 cdck; /* current docking state */ 82 u32 sxsw; /* Sx state resume */ 83 u32 evts; /* ASL supported events */ 84 u32 cnot; /* current OS notification */ 85 u32 nrdy; /* driver status */ 86 u8 rsvd2[60]; 87 } __packed; 88 89 /* OpRegion mailbox #2: SWSCI */ 90 struct opregion_swsci { 91 u32 scic; /* SWSCI command|status|data */ 92 u32 parm; /* command parameters */ 93 u32 dslp; /* driver sleep time-out */ 94 u8 rsvd[244]; 95 } __packed; 96 97 /* OpRegion mailbox #3: ASLE */ 98 struct opregion_asle { 99 u32 ardy; /* driver readiness */ 100 u32 aslc; /* ASLE interrupt command */ 101 u32 tche; /* technology enabled indicator */ 102 u32 alsi; /* current ALS illuminance reading */ 103 u32 bclp; /* backlight brightness to set */ 104 u32 pfit; /* panel fitting state */ 105 u32 cblv; /* current brightness level */ 106 u16 bclm[20]; /* backlight level duty cycle mapping table */ 107 u32 cpfm; /* current panel fitting mode */ 108 u32 epfm; /* enabled panel fitting modes */ 109 u8 plut[74]; /* panel LUT and identifier */ 110 u32 pfmb; /* PWM freq and min brightness */ 111 u32 cddv; /* color correction default values */ 112 u32 pcft; /* power conservation features */ 113 u32 srot; /* supported rotation angles */ 114 u32 iuer; /* IUER events */ 115 u8 rsvd[86]; 116 } __packed; 117 118 /* Driver readiness indicator */ 119 #define ASLE_ARDY_READY (1 << 0) 120 #define ASLE_ARDY_NOT_READY (0 << 0) 121 122 /* ASLE Interrupt Command (ASLC) bits */ 123 #define ASLC_SET_ALS_ILLUM (1 << 0) 124 #define ASLC_SET_BACKLIGHT (1 << 1) 125 #define ASLC_SET_PFIT (1 << 2) 126 #define ASLC_SET_PWM_FREQ (1 << 3) 127 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4) 128 #define ASLC_BUTTON_ARRAY (1 << 5) 129 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6) 130 #define ASLC_DOCKING_INDICATOR (1 << 7) 131 #define ASLC_ISCT_STATE_CHANGE (1 << 8) 132 #define ASLC_REQ_MSK 0x1ff 133 /* response bits */ 134 #define ASLC_ALS_ILLUM_FAILED (1 << 10) 135 #define ASLC_BACKLIGHT_FAILED (1 << 12) 136 #define ASLC_PFIT_FAILED (1 << 14) 137 #define ASLC_PWM_FREQ_FAILED (1 << 16) 138 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18) 139 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20) 140 #define ASLC_CONVERTIBLE_FAILED (1 << 22) 141 #define ASLC_DOCKING_FAILED (1 << 24) 142 #define ASLC_ISCT_STATE_FAILED (1 << 26) 143 144 /* Technology enabled indicator */ 145 #define ASLE_TCHE_ALS_EN (1 << 0) 146 #define ASLE_TCHE_BLC_EN (1 << 1) 147 #define ASLE_TCHE_PFIT_EN (1 << 2) 148 #define ASLE_TCHE_PFMB_EN (1 << 3) 149 150 /* ASLE backlight brightness to set */ 151 #define ASLE_BCLP_VALID (1<<31) 152 #define ASLE_BCLP_MSK (~(1<<31)) 153 154 /* ASLE panel fitting request */ 155 #define ASLE_PFIT_VALID (1<<31) 156 #define ASLE_PFIT_CENTER (1<<0) 157 #define ASLE_PFIT_STRETCH_TEXT (1<<1) 158 #define ASLE_PFIT_STRETCH_GFX (1<<2) 159 160 /* PWM frequency and minimum brightness */ 161 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) 162 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) 163 #define ASLE_PFMB_PWM_MASK (0x7ffffe00) 164 #define ASLE_PFMB_PWM_VALID (1<<31) 165 166 #define ASLE_CBLV_VALID (1<<31) 167 168 /* IUER */ 169 #define ASLE_IUER_DOCKING (1 << 7) 170 #define ASLE_IUER_CONVERTIBLE (1 << 6) 171 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4) 172 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3) 173 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2) 174 #define ASLE_IUER_WINDOWS_BTN (1 << 1) 175 #define ASLE_IUER_POWER_BTN (1 << 0) 176 177 /* Software System Control Interrupt (SWSCI) */ 178 #define SWSCI_SCIC_INDICATOR (1 << 0) 179 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 180 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) 181 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 182 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) 183 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 184 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) 185 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 186 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) 187 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 188 189 #define SWSCI_FUNCTION_CODE(main, sub) \ 190 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ 191 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) 192 193 /* SWSCI: Get BIOS Data (GBDA) */ 194 #define SWSCI_GBDA 4 195 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) 196 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) 197 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) 198 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) 199 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) 200 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) 201 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) 202 203 /* SWSCI: System BIOS Callbacks (SBCB) */ 204 #define SWSCI_SBCB 6 205 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) 206 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) 207 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) 208 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) 209 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) 210 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) 211 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) 212 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) 213 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) 214 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) 215 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) 216 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) 217 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) 218 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) 219 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) 220 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) 221 222 #define ACPI_OTHER_OUTPUT (0<<8) 223 #define ACPI_VGA_OUTPUT (1<<8) 224 #define ACPI_TV_OUTPUT (2<<8) 225 #define ACPI_DIGITAL_OUTPUT (3<<8) 226 #define ACPI_LVDS_OUTPUT (4<<8) 227 228 #define MAX_DSLP 1500 229 230 #ifdef CONFIG_ACPI 231 static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out) 232 { 233 struct drm_i915_private *dev_priv = dev->dev_private; 234 struct opregion_swsci __iomem *swsci = dev_priv->opregion.swsci; 235 u32 main_function, sub_function, scic; 236 u16 pci_swsci; 237 u32 dslp; 238 239 if (!swsci) 240 return -ENODEV; 241 242 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 243 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 244 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 245 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 246 247 /* Check if we can call the function. See swsci_setup for details. */ 248 if (main_function == SWSCI_SBCB) { 249 if ((dev_priv->opregion.swsci_sbcb_sub_functions & 250 (1 << sub_function)) == 0) 251 return -EINVAL; 252 } else if (main_function == SWSCI_GBDA) { 253 if ((dev_priv->opregion.swsci_gbda_sub_functions & 254 (1 << sub_function)) == 0) 255 return -EINVAL; 256 } 257 258 /* Driver sleep timeout in ms. */ 259 dslp = ioread32(&swsci->dslp); 260 if (!dslp) { 261 /* The spec says 2ms should be the default, but it's too small 262 * for some machines. */ 263 dslp = 50; 264 } else if (dslp > MAX_DSLP) { 265 /* Hey bios, trust must be earned. */ 266 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 267 "using %u ms instead\n", dslp, MAX_DSLP); 268 dslp = MAX_DSLP; 269 } 270 271 /* The spec tells us to do this, but we are the only user... */ 272 scic = ioread32(&swsci->scic); 273 if (scic & SWSCI_SCIC_INDICATOR) { 274 DRM_DEBUG_DRIVER("SWSCI request already in progress\n"); 275 return -EBUSY; 276 } 277 278 scic = function | SWSCI_SCIC_INDICATOR; 279 280 iowrite32(parm, &swsci->parm); 281 iowrite32(scic, &swsci->scic); 282 283 /* Ensure SCI event is selected and event trigger is cleared. */ 284 pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci); 285 if (!(pci_swsci & PCI_SWSCI_SCISEL) || (pci_swsci & PCI_SWSCI_GSSCIE)) { 286 pci_swsci |= PCI_SWSCI_SCISEL; 287 pci_swsci &= ~PCI_SWSCI_GSSCIE; 288 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); 289 } 290 291 /* Use event trigger to tell bios to check the mail. */ 292 pci_swsci |= PCI_SWSCI_GSSCIE; 293 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); 294 295 /* Poll for the result. */ 296 #define C (((scic = ioread32(&swsci->scic)) & SWSCI_SCIC_INDICATOR) == 0) 297 if (wait_for(C, dslp)) { 298 DRM_DEBUG_DRIVER("SWSCI request timed out\n"); 299 return -ETIMEDOUT; 300 } 301 302 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 303 SWSCI_SCIC_EXIT_STATUS_SHIFT; 304 305 /* Note: scic == 0 is an error! */ 306 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 307 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic); 308 return -EIO; 309 } 310 311 if (parm_out) 312 *parm_out = ioread32(&swsci->parm); 313 314 return 0; 315 316 #undef C 317 } 318 319 #define DISPLAY_TYPE_CRT 0 320 #define DISPLAY_TYPE_TV 1 321 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 322 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 323 324 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 325 bool enable) 326 { 327 struct drm_device *dev = intel_encoder->base.dev; 328 u32 parm = 0; 329 u32 type = 0; 330 u32 port; 331 332 /* don't care about old stuff for now */ 333 if (!HAS_DDI(dev)) 334 return 0; 335 336 port = intel_ddi_get_encoder_port(intel_encoder); 337 if (port == PORT_E) { 338 port = 0; 339 } else { 340 parm |= 1 << port; 341 port++; 342 } 343 344 if (!enable) 345 parm |= 4 << 8; 346 347 switch (intel_encoder->type) { 348 case INTEL_OUTPUT_ANALOG: 349 type = DISPLAY_TYPE_CRT; 350 break; 351 case INTEL_OUTPUT_UNKNOWN: 352 case INTEL_OUTPUT_DISPLAYPORT: 353 case INTEL_OUTPUT_HDMI: 354 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 355 break; 356 case INTEL_OUTPUT_EDP: 357 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 358 break; 359 default: 360 WARN_ONCE(1, "unsupported intel_encoder type %d\n", 361 intel_encoder->type); 362 return -EINVAL; 363 } 364 365 parm |= type << (16 + port * 3); 366 367 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 368 } 369 370 static const struct { 371 pci_power_t pci_power_state; 372 u32 parm; 373 } power_state_map[] = { 374 { PCI_D0, 0x00 }, 375 { PCI_D1, 0x01 }, 376 { PCI_D2, 0x02 }, 377 { PCI_D3hot, 0x04 }, 378 { PCI_D3cold, 0x04 }, 379 }; 380 381 int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) 382 { 383 int i; 384 385 if (!HAS_DDI(dev)) 386 return 0; 387 388 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 389 if (state == power_state_map[i].pci_power_state) 390 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE, 391 power_state_map[i].parm, NULL); 392 } 393 394 return -EINVAL; 395 } 396 397 /* 398 * If the vendor backlight interface is not in use and ACPI backlight interface 399 * is broken, do not bother processing backlight change requests from firmware. 400 */ 401 static bool should_ignore_backlight_request(void) 402 { 403 #if 0 404 return acpi_video_backlight_support() && 405 !acpi_video_verify_backlight_support(); 406 #else 407 return false; 408 #endif 409 } 410 411 static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) 412 { 413 struct drm_i915_private *dev_priv = dev->dev_private; 414 struct intel_connector *intel_connector; 415 struct opregion_asle __iomem *asle = dev_priv->opregion.asle; 416 417 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); 418 419 if (should_ignore_backlight_request()) { 420 DRM_DEBUG_KMS("opregion backlight request ignored\n"); 421 return 0; 422 } 423 424 if (!(bclp & ASLE_BCLP_VALID)) 425 return ASLC_BACKLIGHT_FAILED; 426 427 bclp &= ASLE_BCLP_MSK; 428 if (bclp > 255) 429 return ASLC_BACKLIGHT_FAILED; 430 431 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 432 433 /* 434 * Update backlight on all connectors that support backlight (usually 435 * only one). 436 */ 437 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); 438 list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head) 439 intel_panel_set_backlight_acpi(intel_connector, bclp, 255); 440 iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv); 441 442 drm_modeset_unlock(&dev->mode_config.connection_mutex); 443 444 445 return 0; 446 } 447 448 static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) 449 { 450 /* alsi is the current ALS reading in lux. 0 indicates below sensor 451 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 452 DRM_DEBUG_DRIVER("Illum is not supported\n"); 453 return ASLC_ALS_ILLUM_FAILED; 454 } 455 456 static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) 457 { 458 DRM_DEBUG_DRIVER("PWM freq is not supported\n"); 459 return ASLC_PWM_FREQ_FAILED; 460 } 461 462 static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) 463 { 464 /* Panel fitting is currently controlled by the X code, so this is a 465 noop until modesetting support works fully */ 466 DRM_DEBUG_DRIVER("Pfit is not supported\n"); 467 return ASLC_PFIT_FAILED; 468 } 469 470 static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot) 471 { 472 DRM_DEBUG_DRIVER("SROT is not supported\n"); 473 return ASLC_ROTATION_ANGLES_FAILED; 474 } 475 476 static u32 asle_set_button_array(struct drm_device *dev, u32 iuer) 477 { 478 if (!iuer) 479 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n"); 480 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 481 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n"); 482 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 483 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n"); 484 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 485 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n"); 486 if (iuer & ASLE_IUER_WINDOWS_BTN) 487 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n"); 488 if (iuer & ASLE_IUER_POWER_BTN) 489 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n"); 490 491 return ASLC_BUTTON_ARRAY_FAILED; 492 } 493 494 static u32 asle_set_convertible(struct drm_device *dev, u32 iuer) 495 { 496 if (iuer & ASLE_IUER_CONVERTIBLE) 497 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n"); 498 else 499 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n"); 500 501 return ASLC_CONVERTIBLE_FAILED; 502 } 503 504 static u32 asle_set_docking(struct drm_device *dev, u32 iuer) 505 { 506 if (iuer & ASLE_IUER_DOCKING) 507 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n"); 508 else 509 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n"); 510 511 return ASLC_DOCKING_FAILED; 512 } 513 514 static u32 asle_isct_state(struct drm_device *dev) 515 { 516 DRM_DEBUG_DRIVER("ISCT is not supported\n"); 517 return ASLC_ISCT_STATE_FAILED; 518 } 519 520 static void asle_work(struct work_struct *work) 521 { 522 struct intel_opregion *opregion = 523 container_of(work, struct intel_opregion, asle_work); 524 struct drm_i915_private *dev_priv = 525 container_of(opregion, struct drm_i915_private, opregion); 526 struct drm_device *dev = dev_priv->dev; 527 struct opregion_asle __iomem *asle = dev_priv->opregion.asle; 528 u32 aslc_stat = 0; 529 u32 aslc_req; 530 531 if (!asle) 532 return; 533 534 aslc_req = ioread32(&asle->aslc); 535 536 if (!(aslc_req & ASLC_REQ_MSK)) { 537 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n", 538 aslc_req); 539 return; 540 } 541 542 if (aslc_req & ASLC_SET_ALS_ILLUM) 543 aslc_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi)); 544 545 if (aslc_req & ASLC_SET_BACKLIGHT) 546 aslc_stat |= asle_set_backlight(dev, ioread32(&asle->bclp)); 547 548 if (aslc_req & ASLC_SET_PFIT) 549 aslc_stat |= asle_set_pfit(dev, ioread32(&asle->pfit)); 550 551 if (aslc_req & ASLC_SET_PWM_FREQ) 552 aslc_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb)); 553 554 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 555 aslc_stat |= asle_set_supported_rotation_angles(dev, 556 ioread32(&asle->srot)); 557 558 if (aslc_req & ASLC_BUTTON_ARRAY) 559 aslc_stat |= asle_set_button_array(dev, ioread32(&asle->iuer)); 560 561 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 562 aslc_stat |= asle_set_convertible(dev, ioread32(&asle->iuer)); 563 564 if (aslc_req & ASLC_DOCKING_INDICATOR) 565 aslc_stat |= asle_set_docking(dev, ioread32(&asle->iuer)); 566 567 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 568 aslc_stat |= asle_isct_state(dev); 569 570 iowrite32(aslc_stat, &asle->aslc); 571 } 572 573 void intel_opregion_asle_intr(struct drm_device *dev) 574 { 575 struct drm_i915_private *dev_priv = dev->dev_private; 576 577 if (dev_priv->opregion.asle) 578 schedule_work(&dev_priv->opregion.asle_work); 579 } 580 581 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 582 #define ACPI_EV_LID (1<<1) 583 #define ACPI_EV_DOCK (1<<2) 584 585 static struct intel_opregion *system_opregion; 586 587 #if 0 588 static int intel_opregion_video_event(struct notifier_block *nb, 589 unsigned long val, void *data) 590 { 591 /* The only video events relevant to opregion are 0x80. These indicate 592 either a docking event, lid switch or display switch request. In 593 Linux, these are handled by the dock, button and video drivers. 594 */ 595 596 struct opregion_acpi __iomem *acpi; 597 struct acpi_bus_event *event = data; 598 int ret = NOTIFY_OK; 599 600 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 601 return NOTIFY_DONE; 602 603 if (!system_opregion) 604 return NOTIFY_DONE; 605 606 acpi = system_opregion->acpi; 607 608 if (event->type == 0x80 && 609 (ioread32(&acpi->cevt) & 1) == 0) 610 ret = NOTIFY_BAD; 611 612 iowrite32(0, &acpi->csts); 613 614 return ret; 615 } 616 617 static struct notifier_block intel_opregion_notifier = { 618 .notifier_call = intel_opregion_video_event, 619 }; 620 #endif 621 622 static int acpi_is_video_device(ACPI_HANDLE devh) { 623 ACPI_HANDLE h; 624 if (ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 625 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h))) { 626 return 0; 627 } 628 return 1; 629 } 630 631 /* 632 * Initialise the DIDL field in opregion. This passes a list of devices to 633 * the firmware. Values are defined by section B.4.2 of the ACPI specification 634 * (version 3) 635 */ 636 637 static void intel_didl_outputs(struct drm_device *dev) 638 { 639 struct drm_i915_private *dev_priv = dev->dev_private; 640 struct intel_opregion *opregion = &dev_priv->opregion; 641 struct drm_connector *connector; 642 ACPI_HANDLE handle, acpi_cdev, acpi_video_bus; 643 u32 device_id; 644 ACPI_STATUS status; 645 u32 temp; 646 int i = 0; 647 648 handle = acpi_get_handle(dev->dev); 649 if (!handle) 650 return; 651 652 if (acpi_is_video_device(handle)) 653 acpi_video_bus = handle; 654 else { 655 acpi_cdev = NULL; 656 acpi_video_bus = NULL; 657 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, handle, acpi_cdev, 658 &acpi_cdev) != AE_NOT_FOUND) { 659 if (acpi_is_video_device(acpi_cdev)) { 660 acpi_video_bus = acpi_cdev; 661 break; 662 } 663 } 664 } 665 666 if (!acpi_video_bus) { 667 pr_warn("No ACPI video bus found\n"); 668 return; 669 } 670 671 acpi_cdev = NULL; 672 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpi_video_bus, acpi_cdev, 673 &acpi_cdev) != AE_NOT_FOUND) { 674 if (i >= 8) { 675 device_printf(dev->dev, 676 "More than 8 outputs detected via ACPI\n"); 677 return; 678 } 679 status = acpi_GetInteger(acpi_cdev, "_ADR", &device_id); 680 if (ACPI_SUCCESS(status)) { 681 if (!device_id) 682 goto blind_set; 683 iowrite32((u32)(device_id & 0x0f0f), 684 &opregion->acpi->didl[i]); 685 i++; 686 } 687 } 688 689 end: 690 /* If fewer than 8 outputs, the list must be null terminated */ 691 if (i < 8) 692 iowrite32(0, &opregion->acpi->didl[i]); 693 return; 694 695 blind_set: 696 i = 0; 697 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 698 int output_type = ACPI_OTHER_OUTPUT; 699 if (i >= 8) { 700 device_printf(dev->dev, 701 "More than 8 outputs in connector list\n"); 702 return; 703 } 704 switch (connector->connector_type) { 705 case DRM_MODE_CONNECTOR_VGA: 706 case DRM_MODE_CONNECTOR_DVIA: 707 output_type = ACPI_VGA_OUTPUT; 708 break; 709 case DRM_MODE_CONNECTOR_Composite: 710 case DRM_MODE_CONNECTOR_SVIDEO: 711 case DRM_MODE_CONNECTOR_Component: 712 case DRM_MODE_CONNECTOR_9PinDIN: 713 output_type = ACPI_TV_OUTPUT; 714 break; 715 case DRM_MODE_CONNECTOR_DVII: 716 case DRM_MODE_CONNECTOR_DVID: 717 case DRM_MODE_CONNECTOR_DisplayPort: 718 case DRM_MODE_CONNECTOR_HDMIA: 719 case DRM_MODE_CONNECTOR_HDMIB: 720 output_type = ACPI_DIGITAL_OUTPUT; 721 break; 722 case DRM_MODE_CONNECTOR_LVDS: 723 output_type = ACPI_LVDS_OUTPUT; 724 break; 725 } 726 temp = ioread32(&opregion->acpi->didl[i]); 727 iowrite32(temp | (1<<31) | output_type | i, 728 &opregion->acpi->didl[i]); 729 i++; 730 } 731 goto end; 732 } 733 734 static void intel_setup_cadls(struct drm_device *dev) 735 { 736 struct drm_i915_private *dev_priv = dev->dev_private; 737 struct intel_opregion *opregion = &dev_priv->opregion; 738 int i = 0; 739 u32 disp_id; 740 741 /* Initialize the CADL field by duplicating the DIDL values. 742 * Technically, this is not always correct as display outputs may exist, 743 * but not active. This initialization is necessary for some Clevo 744 * laptops that check this field before processing the brightness and 745 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if 746 * there are less than eight devices. */ 747 do { 748 disp_id = ioread32(&opregion->acpi->didl[i]); 749 iowrite32(disp_id, &opregion->acpi->cadl[i]); 750 } while (++i < 8 && disp_id != 0); 751 } 752 753 void intel_opregion_init(struct drm_device *dev) 754 { 755 struct drm_i915_private *dev_priv = dev->dev_private; 756 struct intel_opregion *opregion = &dev_priv->opregion; 757 758 if (!opregion->header) 759 return; 760 761 if (opregion->acpi) { 762 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 763 intel_didl_outputs(dev); 764 intel_setup_cadls(dev); 765 } 766 767 /* Notify BIOS we are ready to handle ACPI video ext notifs. 768 * Right now, all the events are handled by the ACPI video module. 769 * We don't actually need to do anything with them. */ 770 iowrite32(0, &opregion->acpi->csts); 771 iowrite32(1, &opregion->acpi->drdy); 772 773 system_opregion = opregion; 774 } 775 776 if (opregion->asle) { 777 iowrite32(ASLE_TCHE_BLC_EN, &opregion->asle->tche); 778 iowrite32(ASLE_ARDY_READY, &opregion->asle->ardy); 779 } 780 } 781 782 void intel_opregion_fini(struct drm_device *dev) 783 { 784 struct drm_i915_private *dev_priv = dev->dev_private; 785 struct intel_opregion *opregion = &dev_priv->opregion; 786 787 if (!opregion->header) 788 return; 789 790 if (opregion->asle) 791 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); 792 793 cancel_work_sync(&dev_priv->opregion.asle_work); 794 795 if (opregion->acpi) { 796 iowrite32(0, &opregion->acpi->drdy); 797 798 system_opregion = NULL; 799 } 800 801 /* just clear all opregion memory pointers now */ 802 pmap_unmapdev((vm_offset_t)opregion->header, OPREGION_SIZE); 803 opregion->header = NULL; 804 opregion->acpi = NULL; 805 opregion->swsci = NULL; 806 opregion->asle = NULL; 807 opregion->vbt = NULL; 808 opregion->lid_state = NULL; 809 } 810 811 static void swsci_setup(struct drm_device *dev) 812 { 813 struct drm_i915_private *dev_priv = dev->dev_private; 814 struct intel_opregion *opregion = &dev_priv->opregion; 815 bool requested_callbacks = false; 816 u32 tmp; 817 818 /* Sub-function code 0 is okay, let's allow them. */ 819 opregion->swsci_gbda_sub_functions = 1; 820 opregion->swsci_sbcb_sub_functions = 1; 821 822 /* We use GBDA to ask for supported GBDA calls. */ 823 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 824 /* make the bits match the sub-function codes */ 825 tmp <<= 1; 826 opregion->swsci_gbda_sub_functions |= tmp; 827 } 828 829 /* 830 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 831 * must not call interfaces that are not specifically requested by the 832 * bios. 833 */ 834 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 835 /* here, the bits already match sub-function codes */ 836 opregion->swsci_sbcb_sub_functions |= tmp; 837 requested_callbacks = true; 838 } 839 840 /* 841 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 842 * the callback is _requested_. But we still can't call interfaces that 843 * are not requested. 844 */ 845 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 846 /* make the bits match the sub-function codes */ 847 u32 low = tmp & 0x7ff; 848 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 849 tmp = (high << 4) | (low << 1) | 1; 850 851 /* best guess what to do with supported wrt requested */ 852 if (requested_callbacks) { 853 u32 req = opregion->swsci_sbcb_sub_functions; 854 if ((req & tmp) != req) 855 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp); 856 /* XXX: for now, trust the requested callbacks */ 857 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 858 } else { 859 opregion->swsci_sbcb_sub_functions |= tmp; 860 } 861 } 862 863 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 864 opregion->swsci_gbda_sub_functions, 865 opregion->swsci_sbcb_sub_functions); 866 } 867 #else /* CONFIG_ACPI */ 868 static inline void swsci_setup(struct drm_device *dev) {} 869 #endif /* CONFIG_ACPI */ 870 871 int intel_opregion_setup(struct drm_device *dev) 872 { 873 struct drm_i915_private *dev_priv = dev->dev_private; 874 struct intel_opregion *opregion = &dev_priv->opregion; 875 char __iomem *base; 876 u32 asls, mboxes; 877 char buf[sizeof(OPREGION_SIGNATURE)]; 878 int err = 0; 879 880 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls); 881 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); 882 if (asls == 0) { 883 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); 884 return -ENOTSUP; 885 } 886 887 #ifdef CONFIG_ACPI 888 INIT_WORK(&opregion->asle_work, asle_work); 889 #endif 890 891 base = (void *)pmap_mapbios(asls, OPREGION_SIZE); 892 if (!base) 893 return -ENOMEM; 894 895 memcpy_fromio(buf, base, sizeof(buf)); 896 897 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 898 DRM_DEBUG_DRIVER("opregion signature mismatch\n"); 899 err = -EINVAL; 900 goto err_out; 901 } 902 opregion->header = (struct opregion_header *)base; 903 opregion->vbt = base + OPREGION_VBT_OFFSET; 904 905 opregion->lid_state = (u32 *)(base + ACPI_CLID); 906 907 mboxes = ioread32(&opregion->header->mboxes); 908 if (mboxes & MBOX_ACPI) { 909 DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); 910 opregion->acpi = (struct opregion_acpi *)(base + OPREGION_ACPI_OFFSET); 911 } 912 913 if (mboxes & MBOX_SWSCI) { 914 DRM_DEBUG_DRIVER("SWSCI supported\n"); 915 opregion->swsci = (struct opregion_swsci *)(base + OPREGION_SWSCI_OFFSET); 916 swsci_setup(dev); 917 } 918 if (mboxes & MBOX_ASLE) { 919 DRM_DEBUG_DRIVER("ASLE supported\n"); 920 opregion->asle = (struct opregion_asle *)(base + OPREGION_ASLE_OFFSET); 921 922 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); 923 } 924 925 return 0; 926 927 err_out: 928 pmap_unmapdev((vm_offset_t)base, OPREGION_SIZE); 929 return err; 930 } 931