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/acpi.h> 29 #include <linux/dmi.h> 30 #include <linux/firmware.h> 31 #include <acpi/video.h> 32 33 #include "i915_drv.h" 34 #include "intel_acpi.h" 35 #include "intel_backlight.h" 36 #include "intel_display_types.h" 37 #include "intel_opregion.h" 38 #include "intel_pci_config.h" 39 40 #define OPREGION_HEADER_OFFSET 0 41 #define OPREGION_ACPI_OFFSET 0x100 42 #define ACPI_CLID 0x01ac /* current lid state indicator */ 43 #define ACPI_CDCK 0x01b0 /* current docking state indicator */ 44 #define OPREGION_SWSCI_OFFSET 0x200 45 #define OPREGION_ASLE_OFFSET 0x300 46 #define OPREGION_VBT_OFFSET 0x400 47 #define OPREGION_ASLE_EXT_OFFSET 0x1C00 48 49 #define OPREGION_SIGNATURE "IntelGraphicsMem" 50 #define MBOX_ACPI (1<<0) 51 #define MBOX_SWSCI (1<<1) 52 #define MBOX_ASLE (1<<2) 53 #define MBOX_ASLE_EXT (1<<4) 54 55 struct opregion_header { 56 u8 signature[16]; 57 u32 size; 58 struct { 59 u8 rsvd; 60 u8 revision; 61 u8 minor; 62 u8 major; 63 } __packed over; 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 (2.0) or relative from opregion (2.1+) 128 * address of raw VBT data. */ 129 u32 rvds; /* Size of raw vbt data */ 130 u8 rsvd[58]; 131 } __packed; 132 133 /* OpRegion mailbox #5: ASLE ext */ 134 struct opregion_asle_ext { 135 u32 phed; /* Panel Header */ 136 u8 bddc[256]; /* Panel EDID */ 137 u8 rsvd[764]; 138 } __packed; 139 140 /* Driver readiness indicator */ 141 #define ASLE_ARDY_READY (1 << 0) 142 #define ASLE_ARDY_NOT_READY (0 << 0) 143 144 /* ASLE Interrupt Command (ASLC) bits */ 145 #define ASLC_SET_ALS_ILLUM (1 << 0) 146 #define ASLC_SET_BACKLIGHT (1 << 1) 147 #define ASLC_SET_PFIT (1 << 2) 148 #define ASLC_SET_PWM_FREQ (1 << 3) 149 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4) 150 #define ASLC_BUTTON_ARRAY (1 << 5) 151 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6) 152 #define ASLC_DOCKING_INDICATOR (1 << 7) 153 #define ASLC_ISCT_STATE_CHANGE (1 << 8) 154 #define ASLC_REQ_MSK 0x1ff 155 /* response bits */ 156 #define ASLC_ALS_ILLUM_FAILED (1 << 10) 157 #define ASLC_BACKLIGHT_FAILED (1 << 12) 158 #define ASLC_PFIT_FAILED (1 << 14) 159 #define ASLC_PWM_FREQ_FAILED (1 << 16) 160 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18) 161 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20) 162 #define ASLC_CONVERTIBLE_FAILED (1 << 22) 163 #define ASLC_DOCKING_FAILED (1 << 24) 164 #define ASLC_ISCT_STATE_FAILED (1 << 26) 165 166 /* Technology enabled indicator */ 167 #define ASLE_TCHE_ALS_EN (1 << 0) 168 #define ASLE_TCHE_BLC_EN (1 << 1) 169 #define ASLE_TCHE_PFIT_EN (1 << 2) 170 #define ASLE_TCHE_PFMB_EN (1 << 3) 171 172 /* ASLE backlight brightness to set */ 173 #define ASLE_BCLP_VALID (1<<31) 174 #define ASLE_BCLP_MSK (~(1<<31)) 175 176 /* ASLE panel fitting request */ 177 #define ASLE_PFIT_VALID (1<<31) 178 #define ASLE_PFIT_CENTER (1<<0) 179 #define ASLE_PFIT_STRETCH_TEXT (1<<1) 180 #define ASLE_PFIT_STRETCH_GFX (1<<2) 181 182 /* PWM frequency and minimum brightness */ 183 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) 184 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) 185 #define ASLE_PFMB_PWM_MASK (0x7ffffe00) 186 #define ASLE_PFMB_PWM_VALID (1<<31) 187 188 #define ASLE_CBLV_VALID (1<<31) 189 190 /* IUER */ 191 #define ASLE_IUER_DOCKING (1 << 7) 192 #define ASLE_IUER_CONVERTIBLE (1 << 6) 193 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4) 194 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3) 195 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2) 196 #define ASLE_IUER_WINDOWS_BTN (1 << 1) 197 #define ASLE_IUER_POWER_BTN (1 << 0) 198 199 #define ASLE_PHED_EDID_VALID_MASK 0x3 200 201 /* Software System Control Interrupt (SWSCI) */ 202 #define SWSCI_SCIC_INDICATOR (1 << 0) 203 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 204 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) 205 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 206 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) 207 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 208 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) 209 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 210 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) 211 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 212 213 #define SWSCI_FUNCTION_CODE(main, sub) \ 214 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ 215 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) 216 217 /* SWSCI: Get BIOS Data (GBDA) */ 218 #define SWSCI_GBDA 4 219 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) 220 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) 221 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) 222 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) 223 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) 224 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) 225 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) 226 227 /* SWSCI: System BIOS Callbacks (SBCB) */ 228 #define SWSCI_SBCB 6 229 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) 230 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) 231 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) 232 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) 233 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) 234 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) 235 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) 236 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) 237 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) 238 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) 239 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) 240 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) 241 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) 242 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) 243 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) 244 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) 245 246 #define MAX_DSLP 1500 247 248 static int swsci(struct drm_i915_private *dev_priv, 249 u32 function, u32 parm, u32 *parm_out) 250 { 251 struct opregion_swsci *swsci = dev_priv->opregion.swsci; 252 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 253 u32 main_function, sub_function, scic; 254 u16 swsci_val; 255 u32 dslp; 256 257 if (!swsci) 258 return -ENODEV; 259 260 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 261 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 262 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 263 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 264 265 /* Check if we can call the function. See swsci_setup for details. */ 266 if (main_function == SWSCI_SBCB) { 267 if ((dev_priv->opregion.swsci_sbcb_sub_functions & 268 (1 << sub_function)) == 0) 269 return -EINVAL; 270 } else if (main_function == SWSCI_GBDA) { 271 if ((dev_priv->opregion.swsci_gbda_sub_functions & 272 (1 << sub_function)) == 0) 273 return -EINVAL; 274 } 275 276 /* Driver sleep timeout in ms. */ 277 dslp = swsci->dslp; 278 if (!dslp) { 279 /* The spec says 2ms should be the default, but it's too small 280 * for some machines. */ 281 dslp = 50; 282 } else if (dslp > MAX_DSLP) { 283 /* Hey bios, trust must be earned. */ 284 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 285 "using %u ms instead\n", dslp, MAX_DSLP); 286 dslp = MAX_DSLP; 287 } 288 289 /* The spec tells us to do this, but we are the only user... */ 290 scic = swsci->scic; 291 if (scic & SWSCI_SCIC_INDICATOR) { 292 drm_dbg(&dev_priv->drm, "SWSCI request already in progress\n"); 293 return -EBUSY; 294 } 295 296 scic = function | SWSCI_SCIC_INDICATOR; 297 298 swsci->parm = parm; 299 swsci->scic = scic; 300 301 /* Ensure SCI event is selected and event trigger is cleared. */ 302 pci_read_config_word(pdev, SWSCI, &swsci_val); 303 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) { 304 swsci_val |= SWSCI_SCISEL; 305 swsci_val &= ~SWSCI_GSSCIE; 306 pci_write_config_word(pdev, SWSCI, swsci_val); 307 } 308 309 /* Use event trigger to tell bios to check the mail. */ 310 swsci_val |= SWSCI_GSSCIE; 311 pci_write_config_word(pdev, SWSCI, swsci_val); 312 313 /* Poll for the result. */ 314 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0) 315 if (wait_for(C, dslp)) { 316 drm_dbg(&dev_priv->drm, "SWSCI request timed out\n"); 317 return -ETIMEDOUT; 318 } 319 320 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 321 SWSCI_SCIC_EXIT_STATUS_SHIFT; 322 323 /* Note: scic == 0 is an error! */ 324 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 325 drm_dbg(&dev_priv->drm, "SWSCI request error %u\n", scic); 326 return -EIO; 327 } 328 329 if (parm_out) 330 *parm_out = swsci->parm; 331 332 return 0; 333 334 #undef C 335 } 336 337 #define DISPLAY_TYPE_CRT 0 338 #define DISPLAY_TYPE_TV 1 339 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 340 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 341 342 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 343 bool enable) 344 { 345 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev); 346 u32 parm = 0; 347 u32 type = 0; 348 u32 port; 349 350 /* don't care about old stuff for now */ 351 if (!HAS_DDI(dev_priv)) 352 return 0; 353 354 if (intel_encoder->type == INTEL_OUTPUT_DSI) 355 port = 0; 356 else 357 port = intel_encoder->port; 358 359 if (port == PORT_E) { 360 port = 0; 361 } else { 362 parm |= 1 << port; 363 port++; 364 } 365 366 if (!enable) 367 parm |= 4 << 8; 368 369 switch (intel_encoder->type) { 370 case INTEL_OUTPUT_ANALOG: 371 type = DISPLAY_TYPE_CRT; 372 break; 373 case INTEL_OUTPUT_DDI: 374 case INTEL_OUTPUT_DP: 375 case INTEL_OUTPUT_HDMI: 376 case INTEL_OUTPUT_DP_MST: 377 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 378 break; 379 case INTEL_OUTPUT_EDP: 380 case INTEL_OUTPUT_DSI: 381 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 382 break; 383 default: 384 drm_WARN_ONCE(&dev_priv->drm, 1, 385 "unsupported intel_encoder type %d\n", 386 intel_encoder->type); 387 return -EINVAL; 388 } 389 390 parm |= type << (16 + port * 3); 391 392 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 393 } 394 395 static const struct { 396 pci_power_t pci_power_state; 397 u32 parm; 398 } power_state_map[] = { 399 { PCI_D0, 0x00 }, 400 { PCI_D1, 0x01 }, 401 { PCI_D2, 0x02 }, 402 { PCI_D3hot, 0x04 }, 403 { PCI_D3cold, 0x04 }, 404 }; 405 406 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv, 407 pci_power_t state) 408 { 409 int i; 410 411 if (!HAS_DDI(dev_priv)) 412 return 0; 413 414 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 415 if (state == power_state_map[i].pci_power_state) 416 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE, 417 power_state_map[i].parm, NULL); 418 } 419 420 return -EINVAL; 421 } 422 423 static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp) 424 { 425 struct intel_connector *connector; 426 struct drm_connector_list_iter conn_iter; 427 struct opregion_asle *asle = dev_priv->opregion.asle; 428 struct drm_device *dev = &dev_priv->drm; 429 430 drm_dbg(&dev_priv->drm, "bclp = 0x%08x\n", bclp); 431 432 if (acpi_video_get_backlight_type() == acpi_backlight_native) { 433 drm_dbg_kms(&dev_priv->drm, 434 "opregion backlight request ignored\n"); 435 return 0; 436 } 437 438 if (!(bclp & ASLE_BCLP_VALID)) 439 return ASLC_BACKLIGHT_FAILED; 440 441 bclp &= ASLE_BCLP_MSK; 442 if (bclp > 255) 443 return ASLC_BACKLIGHT_FAILED; 444 445 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 446 447 /* 448 * Update backlight on all connectors that support backlight (usually 449 * only one). 450 */ 451 drm_dbg_kms(&dev_priv->drm, "updating opregion backlight %d/255\n", 452 bclp); 453 drm_connector_list_iter_begin(dev, &conn_iter); 454 for_each_intel_connector_iter(connector, &conn_iter) 455 intel_backlight_set_acpi(connector->base.state, bclp, 255); 456 drm_connector_list_iter_end(&conn_iter); 457 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID; 458 459 drm_modeset_unlock(&dev->mode_config.connection_mutex); 460 461 462 return 0; 463 } 464 465 static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi) 466 { 467 /* alsi is the current ALS reading in lux. 0 indicates below sensor 468 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 469 drm_dbg(&dev_priv->drm, "Illum is not supported\n"); 470 return ASLC_ALS_ILLUM_FAILED; 471 } 472 473 static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb) 474 { 475 drm_dbg(&dev_priv->drm, "PWM freq is not supported\n"); 476 return ASLC_PWM_FREQ_FAILED; 477 } 478 479 static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit) 480 { 481 /* Panel fitting is currently controlled by the X code, so this is a 482 noop until modesetting support works fully */ 483 drm_dbg(&dev_priv->drm, "Pfit is not supported\n"); 484 return ASLC_PFIT_FAILED; 485 } 486 487 static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot) 488 { 489 drm_dbg(&dev_priv->drm, "SROT is not supported\n"); 490 return ASLC_ROTATION_ANGLES_FAILED; 491 } 492 493 static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer) 494 { 495 if (!iuer) 496 drm_dbg(&dev_priv->drm, 497 "Button array event is not supported (nothing)\n"); 498 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 499 drm_dbg(&dev_priv->drm, 500 "Button array event is not supported (rotation lock)\n"); 501 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 502 drm_dbg(&dev_priv->drm, 503 "Button array event is not supported (volume down)\n"); 504 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 505 drm_dbg(&dev_priv->drm, 506 "Button array event is not supported (volume up)\n"); 507 if (iuer & ASLE_IUER_WINDOWS_BTN) 508 drm_dbg(&dev_priv->drm, 509 "Button array event is not supported (windows)\n"); 510 if (iuer & ASLE_IUER_POWER_BTN) 511 drm_dbg(&dev_priv->drm, 512 "Button array event is not supported (power)\n"); 513 514 return ASLC_BUTTON_ARRAY_FAILED; 515 } 516 517 static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer) 518 { 519 if (iuer & ASLE_IUER_CONVERTIBLE) 520 drm_dbg(&dev_priv->drm, 521 "Convertible is not supported (clamshell)\n"); 522 else 523 drm_dbg(&dev_priv->drm, 524 "Convertible is not supported (slate)\n"); 525 526 return ASLC_CONVERTIBLE_FAILED; 527 } 528 529 static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer) 530 { 531 if (iuer & ASLE_IUER_DOCKING) 532 drm_dbg(&dev_priv->drm, "Docking is not supported (docked)\n"); 533 else 534 drm_dbg(&dev_priv->drm, 535 "Docking is not supported (undocked)\n"); 536 537 return ASLC_DOCKING_FAILED; 538 } 539 540 static u32 asle_isct_state(struct drm_i915_private *dev_priv) 541 { 542 drm_dbg(&dev_priv->drm, "ISCT is not supported\n"); 543 return ASLC_ISCT_STATE_FAILED; 544 } 545 546 static void asle_work(struct work_struct *work) 547 { 548 struct intel_opregion *opregion = 549 container_of(work, struct intel_opregion, asle_work); 550 struct drm_i915_private *dev_priv = 551 container_of(opregion, struct drm_i915_private, opregion); 552 struct opregion_asle *asle = dev_priv->opregion.asle; 553 u32 aslc_stat = 0; 554 u32 aslc_req; 555 556 if (!asle) 557 return; 558 559 aslc_req = asle->aslc; 560 561 if (!(aslc_req & ASLC_REQ_MSK)) { 562 drm_dbg(&dev_priv->drm, 563 "No request on ASLC interrupt 0x%08x\n", aslc_req); 564 return; 565 } 566 567 if (aslc_req & ASLC_SET_ALS_ILLUM) 568 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi); 569 570 if (aslc_req & ASLC_SET_BACKLIGHT) 571 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp); 572 573 if (aslc_req & ASLC_SET_PFIT) 574 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit); 575 576 if (aslc_req & ASLC_SET_PWM_FREQ) 577 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb); 578 579 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 580 aslc_stat |= asle_set_supported_rotation_angles(dev_priv, 581 asle->srot); 582 583 if (aslc_req & ASLC_BUTTON_ARRAY) 584 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer); 585 586 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 587 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer); 588 589 if (aslc_req & ASLC_DOCKING_INDICATOR) 590 aslc_stat |= asle_set_docking(dev_priv, asle->iuer); 591 592 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 593 aslc_stat |= asle_isct_state(dev_priv); 594 595 asle->aslc = aslc_stat; 596 } 597 598 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv) 599 { 600 if (dev_priv->opregion.asle) 601 schedule_work(&dev_priv->opregion.asle_work); 602 } 603 604 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 605 #define ACPI_EV_LID (1<<1) 606 #define ACPI_EV_DOCK (1<<2) 607 608 /* 609 * The only video events relevant to opregion are 0x80. These indicate either a 610 * docking event, lid switch or display switch request. In Linux, these are 611 * handled by the dock, button and video drivers. 612 */ 613 static int intel_opregion_video_event(struct notifier_block *nb, 614 unsigned long val, void *data) 615 { 616 struct intel_opregion *opregion = container_of(nb, struct intel_opregion, 617 acpi_notifier); 618 struct acpi_bus_event *event = data; 619 struct opregion_acpi *acpi; 620 int ret = NOTIFY_OK; 621 622 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 623 return NOTIFY_DONE; 624 625 acpi = opregion->acpi; 626 627 if (event->type == 0x80 && ((acpi->cevt & 1) == 0)) 628 ret = NOTIFY_BAD; 629 630 acpi->csts = 0; 631 632 return ret; 633 } 634 635 /* 636 * Initialise the DIDL field in opregion. This passes a list of devices to 637 * the firmware. Values are defined by section B.4.2 of the ACPI specification 638 * (version 3) 639 */ 640 641 static void set_did(struct intel_opregion *opregion, int i, u32 val) 642 { 643 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 644 opregion->acpi->didl[i] = val; 645 } else { 646 i -= ARRAY_SIZE(opregion->acpi->didl); 647 648 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 649 return; 650 651 opregion->acpi->did2[i] = val; 652 } 653 } 654 655 static void intel_didl_outputs(struct drm_i915_private *dev_priv) 656 { 657 struct intel_opregion *opregion = &dev_priv->opregion; 658 struct intel_connector *connector; 659 struct drm_connector_list_iter conn_iter; 660 int i = 0, max_outputs; 661 662 /* 663 * In theory, did2, the extended didl, gets added at opregion version 664 * 3.0. In practice, however, we're supposed to set it for earlier 665 * versions as well, since a BIOS that doesn't understand did2 should 666 * not look at it anyway. Use a variable so we can tweak this if a need 667 * arises later. 668 */ 669 max_outputs = ARRAY_SIZE(opregion->acpi->didl) + 670 ARRAY_SIZE(opregion->acpi->did2); 671 672 intel_acpi_device_id_update(dev_priv); 673 674 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 675 for_each_intel_connector_iter(connector, &conn_iter) { 676 if (i < max_outputs) 677 set_did(opregion, i, connector->acpi_device_id); 678 i++; 679 } 680 drm_connector_list_iter_end(&conn_iter); 681 682 drm_dbg_kms(&dev_priv->drm, "%d outputs detected\n", i); 683 684 if (i > max_outputs) 685 drm_err(&dev_priv->drm, 686 "More than %d outputs in connector list\n", 687 max_outputs); 688 689 /* If fewer than max outputs, the list must be null terminated */ 690 if (i < max_outputs) 691 set_did(opregion, i, 0); 692 } 693 694 static void intel_setup_cadls(struct drm_i915_private *dev_priv) 695 { 696 struct intel_opregion *opregion = &dev_priv->opregion; 697 struct intel_connector *connector; 698 struct drm_connector_list_iter conn_iter; 699 int i = 0; 700 701 /* 702 * Initialize the CADL field from the connector device ids. This is 703 * essentially the same as copying from the DIDL. Technically, this is 704 * not always correct as display outputs may exist, but not active. This 705 * initialization is necessary for some Clevo laptops that check this 706 * field before processing the brightness and display switching hotkeys. 707 * 708 * Note that internal panels should be at the front of the connector 709 * list already, ensuring they're not left out. 710 */ 711 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 712 for_each_intel_connector_iter(connector, &conn_iter) { 713 if (i >= ARRAY_SIZE(opregion->acpi->cadl)) 714 break; 715 opregion->acpi->cadl[i++] = connector->acpi_device_id; 716 } 717 drm_connector_list_iter_end(&conn_iter); 718 719 /* If fewer than 8 active devices, the list must be null terminated */ 720 if (i < ARRAY_SIZE(opregion->acpi->cadl)) 721 opregion->acpi->cadl[i] = 0; 722 } 723 724 static void swsci_setup(struct drm_i915_private *dev_priv) 725 { 726 struct intel_opregion *opregion = &dev_priv->opregion; 727 bool requested_callbacks = false; 728 u32 tmp; 729 730 /* Sub-function code 0 is okay, let's allow them. */ 731 opregion->swsci_gbda_sub_functions = 1; 732 opregion->swsci_sbcb_sub_functions = 1; 733 734 /* We use GBDA to ask for supported GBDA calls. */ 735 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 736 /* make the bits match the sub-function codes */ 737 tmp <<= 1; 738 opregion->swsci_gbda_sub_functions |= tmp; 739 } 740 741 /* 742 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 743 * must not call interfaces that are not specifically requested by the 744 * bios. 745 */ 746 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 747 /* here, the bits already match sub-function codes */ 748 opregion->swsci_sbcb_sub_functions |= tmp; 749 requested_callbacks = true; 750 } 751 752 /* 753 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 754 * the callback is _requested_. But we still can't call interfaces that 755 * are not requested. 756 */ 757 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 758 /* make the bits match the sub-function codes */ 759 u32 low = tmp & 0x7ff; 760 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 761 tmp = (high << 4) | (low << 1) | 1; 762 763 /* best guess what to do with supported wrt requested */ 764 if (requested_callbacks) { 765 u32 req = opregion->swsci_sbcb_sub_functions; 766 if ((req & tmp) != req) 767 drm_dbg(&dev_priv->drm, 768 "SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", 769 req, tmp); 770 /* XXX: for now, trust the requested callbacks */ 771 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 772 } else { 773 opregion->swsci_sbcb_sub_functions |= tmp; 774 } 775 } 776 777 drm_dbg(&dev_priv->drm, 778 "SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 779 opregion->swsci_gbda_sub_functions, 780 opregion->swsci_sbcb_sub_functions); 781 } 782 783 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) 784 { 785 DRM_DEBUG_KMS("Falling back to manually reading VBT from " 786 "VBIOS ROM for %s\n", id->ident); 787 return 1; 788 } 789 790 static const struct dmi_system_id intel_no_opregion_vbt[] = { 791 { 792 .callback = intel_no_opregion_vbt_callback, 793 .ident = "ThinkCentre A57", 794 .matches = { 795 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 796 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), 797 }, 798 }, 799 { } 800 }; 801 802 static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv) 803 { 804 struct intel_opregion *opregion = &dev_priv->opregion; 805 const struct firmware *fw = NULL; 806 const char *name = dev_priv->params.vbt_firmware; 807 int ret; 808 809 if (!name || !*name) 810 return -ENOENT; 811 812 ret = request_firmware(&fw, name, dev_priv->drm.dev); 813 if (ret) { 814 drm_err(&dev_priv->drm, 815 "Requesting VBT firmware \"%s\" failed (%d)\n", 816 name, ret); 817 return ret; 818 } 819 820 if (intel_bios_is_valid_vbt(fw->data, fw->size)) { 821 opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL); 822 if (opregion->vbt_firmware) { 823 drm_dbg_kms(&dev_priv->drm, 824 "Found valid VBT firmware \"%s\"\n", name); 825 opregion->vbt = opregion->vbt_firmware; 826 opregion->vbt_size = fw->size; 827 ret = 0; 828 } else { 829 ret = -ENOMEM; 830 } 831 } else { 832 drm_dbg_kms(&dev_priv->drm, "Invalid VBT firmware \"%s\"\n", 833 name); 834 ret = -EINVAL; 835 } 836 837 release_firmware(fw); 838 839 return ret; 840 } 841 842 int intel_opregion_setup(struct drm_i915_private *dev_priv) 843 { 844 struct intel_opregion *opregion = &dev_priv->opregion; 845 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 846 u32 asls, mboxes; 847 char buf[sizeof(OPREGION_SIGNATURE)]; 848 int err = 0; 849 void *base; 850 const void *vbt; 851 u32 vbt_size; 852 853 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100); 854 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100); 855 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100); 856 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100); 857 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400); 858 859 pci_read_config_dword(pdev, ASLS, &asls); 860 drm_dbg(&dev_priv->drm, "graphic opregion physical addr: 0x%x\n", 861 asls); 862 if (asls == 0) { 863 drm_dbg(&dev_priv->drm, "ACPI OpRegion not supported!\n"); 864 return -ENOTSUPP; 865 } 866 867 INIT_WORK(&opregion->asle_work, asle_work); 868 869 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB); 870 if (!base) 871 return -ENOMEM; 872 873 memcpy(buf, base, sizeof(buf)); 874 875 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 876 drm_dbg(&dev_priv->drm, "opregion signature mismatch\n"); 877 err = -EINVAL; 878 goto err_out; 879 } 880 opregion->header = base; 881 opregion->lid_state = base + ACPI_CLID; 882 883 drm_dbg(&dev_priv->drm, "ACPI OpRegion version %u.%u.%u\n", 884 opregion->header->over.major, 885 opregion->header->over.minor, 886 opregion->header->over.revision); 887 888 mboxes = opregion->header->mboxes; 889 if (mboxes & MBOX_ACPI) { 890 drm_dbg(&dev_priv->drm, "Public ACPI methods supported\n"); 891 opregion->acpi = base + OPREGION_ACPI_OFFSET; 892 /* 893 * Indicate we handle monitor hotplug events ourselves so we do 894 * not need ACPI notifications for them. Disabling these avoids 895 * triggering the AML code doing the notifation, which may be 896 * broken as Windows also seems to disable these. 897 */ 898 opregion->acpi->chpd = 1; 899 } 900 901 if (mboxes & MBOX_SWSCI) { 902 drm_dbg(&dev_priv->drm, "SWSCI supported\n"); 903 opregion->swsci = base + OPREGION_SWSCI_OFFSET; 904 swsci_setup(dev_priv); 905 } 906 907 if (mboxes & MBOX_ASLE) { 908 drm_dbg(&dev_priv->drm, "ASLE supported\n"); 909 opregion->asle = base + OPREGION_ASLE_OFFSET; 910 911 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 912 } 913 914 if (mboxes & MBOX_ASLE_EXT) { 915 drm_dbg(&dev_priv->drm, "ASLE extension supported\n"); 916 opregion->asle_ext = base + OPREGION_ASLE_EXT_OFFSET; 917 } 918 919 if (intel_load_vbt_firmware(dev_priv) == 0) 920 goto out; 921 922 if (dmi_check_system(intel_no_opregion_vbt)) 923 goto out; 924 925 if (opregion->header->over.major >= 2 && opregion->asle && 926 opregion->asle->rvda && opregion->asle->rvds) { 927 resource_size_t rvda = opregion->asle->rvda; 928 929 /* 930 * opregion 2.0: rvda is the physical VBT address. 931 * 932 * opregion 2.1+: rvda is unsigned, relative offset from 933 * opregion base, and should never point within opregion. 934 */ 935 if (opregion->header->over.major > 2 || 936 opregion->header->over.minor >= 1) { 937 drm_WARN_ON(&dev_priv->drm, rvda < OPREGION_SIZE); 938 939 rvda += asls; 940 } 941 942 opregion->rvda = memremap(rvda, opregion->asle->rvds, 943 MEMREMAP_WB); 944 945 vbt = opregion->rvda; 946 vbt_size = opregion->asle->rvds; 947 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 948 drm_dbg_kms(&dev_priv->drm, 949 "Found valid VBT in ACPI OpRegion (RVDA)\n"); 950 opregion->vbt = vbt; 951 opregion->vbt_size = vbt_size; 952 goto out; 953 } else { 954 drm_dbg_kms(&dev_priv->drm, 955 "Invalid VBT in ACPI OpRegion (RVDA)\n"); 956 memunmap(opregion->rvda); 957 opregion->rvda = NULL; 958 } 959 } 960 961 vbt = base + OPREGION_VBT_OFFSET; 962 /* 963 * The VBT specification says that if the ASLE ext mailbox is not used 964 * its area is reserved, but on some CHT boards the VBT extends into the 965 * ASLE ext area. Allow this even though it is against the spec, so we 966 * do not end up rejecting the VBT on those boards (and end up not 967 * finding the LCD panel because of this). 968 */ 969 vbt_size = (mboxes & MBOX_ASLE_EXT) ? 970 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE; 971 vbt_size -= OPREGION_VBT_OFFSET; 972 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 973 drm_dbg_kms(&dev_priv->drm, 974 "Found valid VBT in ACPI OpRegion (Mailbox #4)\n"); 975 opregion->vbt = vbt; 976 opregion->vbt_size = vbt_size; 977 } else { 978 drm_dbg_kms(&dev_priv->drm, 979 "Invalid VBT in ACPI OpRegion (Mailbox #4)\n"); 980 } 981 982 out: 983 return 0; 984 985 err_out: 986 memunmap(base); 987 return err; 988 } 989 990 static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id) 991 { 992 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident); 993 return 1; 994 } 995 996 static const struct dmi_system_id intel_use_opregion_panel_type[] = { 997 { 998 .callback = intel_use_opregion_panel_type_callback, 999 .ident = "Conrac GmbH IX45GM2", 1000 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"), 1001 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"), 1002 }, 1003 }, 1004 { } 1005 }; 1006 1007 int 1008 intel_opregion_get_panel_type(struct drm_i915_private *dev_priv) 1009 { 1010 u32 panel_details; 1011 int ret; 1012 1013 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details); 1014 if (ret) 1015 return ret; 1016 1017 ret = (panel_details >> 8) & 0xff; 1018 if (ret > 0x10) { 1019 drm_dbg_kms(&dev_priv->drm, 1020 "Invalid OpRegion panel type 0x%x\n", ret); 1021 return -EINVAL; 1022 } 1023 1024 /* fall back to VBT panel type? */ 1025 if (ret == 0x0) { 1026 drm_dbg_kms(&dev_priv->drm, "No panel type in OpRegion\n"); 1027 return -ENODEV; 1028 } 1029 1030 /* 1031 * So far we know that some machined must use it, others must not use it. 1032 * There doesn't seem to be any way to determine which way to go, except 1033 * via a quirk list :( 1034 */ 1035 if (!dmi_check_system(intel_use_opregion_panel_type)) { 1036 drm_dbg_kms(&dev_priv->drm, 1037 "Ignoring OpRegion panel type (%d)\n", ret - 1); 1038 return -ENODEV; 1039 } 1040 1041 return ret - 1; 1042 } 1043 1044 /** 1045 * intel_opregion_get_edid - Fetch EDID from ACPI OpRegion mailbox #5 1046 * @intel_connector: eDP connector 1047 * 1048 * This reads the ACPI Opregion mailbox #5 to extract the EDID that is passed 1049 * to it. 1050 * 1051 * Returns: 1052 * The EDID in the OpRegion, or NULL if there is none or it's invalid. 1053 * 1054 */ 1055 struct edid *intel_opregion_get_edid(struct intel_connector *intel_connector) 1056 { 1057 struct drm_connector *connector = &intel_connector->base; 1058 struct drm_i915_private *i915 = to_i915(connector->dev); 1059 struct intel_opregion *opregion = &i915->opregion; 1060 const void *in_edid; 1061 const struct edid *edid; 1062 struct edid *new_edid; 1063 int len; 1064 1065 if (!opregion->asle_ext) 1066 return NULL; 1067 1068 in_edid = opregion->asle_ext->bddc; 1069 1070 /* Validity corresponds to number of 128-byte blocks */ 1071 len = (opregion->asle_ext->phed & ASLE_PHED_EDID_VALID_MASK) * 128; 1072 if (!len || !memchr_inv(in_edid, 0, len)) 1073 return NULL; 1074 1075 edid = in_edid; 1076 1077 if (len < EDID_LENGTH * (1 + edid->extensions)) { 1078 drm_dbg_kms(&i915->drm, "Invalid EDID in ACPI OpRegion (Mailbox #5): too short\n"); 1079 return NULL; 1080 } 1081 new_edid = drm_edid_duplicate(edid); 1082 if (!new_edid) 1083 return NULL; 1084 if (!drm_edid_is_valid(new_edid)) { 1085 kfree(new_edid); 1086 drm_dbg_kms(&i915->drm, "Invalid EDID in ACPI OpRegion (Mailbox #5)\n"); 1087 return NULL; 1088 } 1089 return new_edid; 1090 } 1091 1092 void intel_opregion_register(struct drm_i915_private *i915) 1093 { 1094 struct intel_opregion *opregion = &i915->opregion; 1095 1096 if (!opregion->header) 1097 return; 1098 1099 if (opregion->acpi) { 1100 opregion->acpi_notifier.notifier_call = 1101 intel_opregion_video_event; 1102 register_acpi_notifier(&opregion->acpi_notifier); 1103 } 1104 1105 intel_opregion_resume(i915); 1106 } 1107 1108 void intel_opregion_resume(struct drm_i915_private *i915) 1109 { 1110 struct intel_opregion *opregion = &i915->opregion; 1111 1112 if (!opregion->header) 1113 return; 1114 1115 if (opregion->acpi) { 1116 intel_didl_outputs(i915); 1117 intel_setup_cadls(i915); 1118 1119 /* 1120 * Notify BIOS we are ready to handle ACPI video ext notifs. 1121 * Right now, all the events are handled by the ACPI video 1122 * module. We don't actually need to do anything with them. 1123 */ 1124 opregion->acpi->csts = 0; 1125 opregion->acpi->drdy = 1; 1126 } 1127 1128 if (opregion->asle) { 1129 opregion->asle->tche = ASLE_TCHE_BLC_EN; 1130 opregion->asle->ardy = ASLE_ARDY_READY; 1131 } 1132 1133 /* Some platforms abuse the _DSM to enable MUX */ 1134 intel_dsm_get_bios_data_funcs_supported(i915); 1135 1136 intel_opregion_notify_adapter(i915, PCI_D0); 1137 } 1138 1139 void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state) 1140 { 1141 struct intel_opregion *opregion = &i915->opregion; 1142 1143 if (!opregion->header) 1144 return; 1145 1146 intel_opregion_notify_adapter(i915, state); 1147 1148 if (opregion->asle) 1149 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 1150 1151 cancel_work_sync(&i915->opregion.asle_work); 1152 1153 if (opregion->acpi) 1154 opregion->acpi->drdy = 0; 1155 } 1156 1157 void intel_opregion_unregister(struct drm_i915_private *i915) 1158 { 1159 struct intel_opregion *opregion = &i915->opregion; 1160 1161 intel_opregion_suspend(i915, PCI_D1); 1162 1163 if (!opregion->header) 1164 return; 1165 1166 if (opregion->acpi_notifier.notifier_call) { 1167 unregister_acpi_notifier(&opregion->acpi_notifier); 1168 opregion->acpi_notifier.notifier_call = NULL; 1169 } 1170 1171 /* just clear all opregion memory pointers now */ 1172 memunmap(opregion->header); 1173 if (opregion->rvda) { 1174 memunmap(opregion->rvda); 1175 opregion->rvda = NULL; 1176 } 1177 if (opregion->vbt_firmware) { 1178 kfree(opregion->vbt_firmware); 1179 opregion->vbt_firmware = NULL; 1180 } 1181 opregion->header = NULL; 1182 opregion->acpi = NULL; 1183 opregion->swsci = NULL; 1184 opregion->asle = NULL; 1185 opregion->asle_ext = NULL; 1186 opregion->vbt = NULL; 1187 opregion->lid_state = NULL; 1188 } 1189