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 BIT(0) /* Mailbox #1 */ 51 #define MBOX_SWSCI BIT(1) /* Mailbox #2 (obsolete from v2.x) */ 52 #define MBOX_ASLE BIT(2) /* Mailbox #3 */ 53 #define MBOX_ASLE_EXT BIT(4) /* Mailbox #5 */ 54 #define MBOX_BACKLIGHT BIT(5) /* Mailbox #2 (valid from v3.x) */ 55 56 struct opregion_header { 57 u8 signature[16]; 58 u32 size; 59 struct { 60 u8 rsvd; 61 u8 revision; 62 u8 minor; 63 u8 major; 64 } __packed over; 65 u8 bios_ver[32]; 66 u8 vbios_ver[16]; 67 u8 driver_ver[16]; 68 u32 mboxes; 69 u32 driver_model; 70 u32 pcon; 71 u8 dver[32]; 72 u8 rsvd[124]; 73 } __packed; 74 75 /* OpRegion mailbox #1: public ACPI methods */ 76 struct opregion_acpi { 77 u32 drdy; /* driver readiness */ 78 u32 csts; /* notification status */ 79 u32 cevt; /* current event */ 80 u8 rsvd1[20]; 81 u32 didl[8]; /* supported display devices ID list */ 82 u32 cpdl[8]; /* currently presented display list */ 83 u32 cadl[8]; /* currently active display list */ 84 u32 nadl[8]; /* next active devices list */ 85 u32 aslp; /* ASL sleep time-out */ 86 u32 tidx; /* toggle table index */ 87 u32 chpd; /* current hotplug enable indicator */ 88 u32 clid; /* current lid state*/ 89 u32 cdck; /* current docking state */ 90 u32 sxsw; /* Sx state resume */ 91 u32 evts; /* ASL supported events */ 92 u32 cnot; /* current OS notification */ 93 u32 nrdy; /* driver status */ 94 u32 did2[7]; /* extended supported display devices ID list */ 95 u32 cpd2[7]; /* extended attached display devices list */ 96 u8 rsvd2[4]; 97 } __packed; 98 99 /* OpRegion mailbox #2: SWSCI */ 100 struct opregion_swsci { 101 u32 scic; /* SWSCI command|status|data */ 102 u32 parm; /* command parameters */ 103 u32 dslp; /* driver sleep time-out */ 104 u8 rsvd[244]; 105 } __packed; 106 107 /* OpRegion mailbox #3: ASLE */ 108 struct opregion_asle { 109 u32 ardy; /* driver readiness */ 110 u32 aslc; /* ASLE interrupt command */ 111 u32 tche; /* technology enabled indicator */ 112 u32 alsi; /* current ALS illuminance reading */ 113 u32 bclp; /* backlight brightness to set */ 114 u32 pfit; /* panel fitting state */ 115 u32 cblv; /* current brightness level */ 116 u16 bclm[20]; /* backlight level duty cycle mapping table */ 117 u32 cpfm; /* current panel fitting mode */ 118 u32 epfm; /* enabled panel fitting modes */ 119 u8 plut[74]; /* panel LUT and identifier */ 120 u32 pfmb; /* PWM freq and min brightness */ 121 u32 cddv; /* color correction default values */ 122 u32 pcft; /* power conservation features */ 123 u32 srot; /* supported rotation angles */ 124 u32 iuer; /* IUER events */ 125 u64 fdss; 126 u32 fdsp; 127 u32 stat; 128 u64 rvda; /* Physical (2.0) or relative from opregion (2.1+) 129 * address of raw VBT data. */ 130 u32 rvds; /* Size of raw vbt data */ 131 u8 rsvd[58]; 132 } __packed; 133 134 /* OpRegion mailbox #5: ASLE ext */ 135 struct opregion_asle_ext { 136 u32 phed; /* Panel Header */ 137 u8 bddc[256]; /* Panel EDID */ 138 u8 rsvd[764]; 139 } __packed; 140 141 /* Driver readiness indicator */ 142 #define ASLE_ARDY_READY (1 << 0) 143 #define ASLE_ARDY_NOT_READY (0 << 0) 144 145 /* ASLE Interrupt Command (ASLC) bits */ 146 #define ASLC_SET_ALS_ILLUM (1 << 0) 147 #define ASLC_SET_BACKLIGHT (1 << 1) 148 #define ASLC_SET_PFIT (1 << 2) 149 #define ASLC_SET_PWM_FREQ (1 << 3) 150 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4) 151 #define ASLC_BUTTON_ARRAY (1 << 5) 152 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6) 153 #define ASLC_DOCKING_INDICATOR (1 << 7) 154 #define ASLC_ISCT_STATE_CHANGE (1 << 8) 155 #define ASLC_REQ_MSK 0x1ff 156 /* response bits */ 157 #define ASLC_ALS_ILLUM_FAILED (1 << 10) 158 #define ASLC_BACKLIGHT_FAILED (1 << 12) 159 #define ASLC_PFIT_FAILED (1 << 14) 160 #define ASLC_PWM_FREQ_FAILED (1 << 16) 161 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18) 162 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20) 163 #define ASLC_CONVERTIBLE_FAILED (1 << 22) 164 #define ASLC_DOCKING_FAILED (1 << 24) 165 #define ASLC_ISCT_STATE_FAILED (1 << 26) 166 167 /* Technology enabled indicator */ 168 #define ASLE_TCHE_ALS_EN (1 << 0) 169 #define ASLE_TCHE_BLC_EN (1 << 1) 170 #define ASLE_TCHE_PFIT_EN (1 << 2) 171 #define ASLE_TCHE_PFMB_EN (1 << 3) 172 173 /* ASLE backlight brightness to set */ 174 #define ASLE_BCLP_VALID (1<<31) 175 #define ASLE_BCLP_MSK (~(1<<31)) 176 177 /* ASLE panel fitting request */ 178 #define ASLE_PFIT_VALID (1<<31) 179 #define ASLE_PFIT_CENTER (1<<0) 180 #define ASLE_PFIT_STRETCH_TEXT (1<<1) 181 #define ASLE_PFIT_STRETCH_GFX (1<<2) 182 183 /* PWM frequency and minimum brightness */ 184 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) 185 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) 186 #define ASLE_PFMB_PWM_MASK (0x7ffffe00) 187 #define ASLE_PFMB_PWM_VALID (1<<31) 188 189 #define ASLE_CBLV_VALID (1<<31) 190 191 /* IUER */ 192 #define ASLE_IUER_DOCKING (1 << 7) 193 #define ASLE_IUER_CONVERTIBLE (1 << 6) 194 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4) 195 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3) 196 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2) 197 #define ASLE_IUER_WINDOWS_BTN (1 << 1) 198 #define ASLE_IUER_POWER_BTN (1 << 0) 199 200 #define ASLE_PHED_EDID_VALID_MASK 0x3 201 202 /* Software System Control Interrupt (SWSCI) */ 203 #define SWSCI_SCIC_INDICATOR (1 << 0) 204 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 205 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) 206 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 207 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) 208 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 209 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) 210 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 211 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) 212 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 213 214 #define SWSCI_FUNCTION_CODE(main, sub) \ 215 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ 216 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) 217 218 /* SWSCI: Get BIOS Data (GBDA) */ 219 #define SWSCI_GBDA 4 220 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) 221 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) 222 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) 223 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) 224 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) 225 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) 226 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) 227 228 /* SWSCI: System BIOS Callbacks (SBCB) */ 229 #define SWSCI_SBCB 6 230 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) 231 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) 232 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) 233 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) 234 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) 235 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) 236 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) 237 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) 238 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) 239 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) 240 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) 241 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) 242 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) 243 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) 244 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) 245 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) 246 247 #define MAX_DSLP 1500 248 249 static int check_swsci_function(struct drm_i915_private *i915, u32 function) 250 { 251 struct opregion_swsci *swsci = i915->opregion.swsci; 252 u32 main_function, sub_function; 253 254 if (!swsci) 255 return -ENODEV; 256 257 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 258 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 259 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 260 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 261 262 /* Check if we can call the function. See swsci_setup for details. */ 263 if (main_function == SWSCI_SBCB) { 264 if ((i915->opregion.swsci_sbcb_sub_functions & 265 (1 << sub_function)) == 0) 266 return -EINVAL; 267 } else if (main_function == SWSCI_GBDA) { 268 if ((i915->opregion.swsci_gbda_sub_functions & 269 (1 << sub_function)) == 0) 270 return -EINVAL; 271 } 272 273 return 0; 274 } 275 276 static int swsci(struct drm_i915_private *dev_priv, 277 u32 function, u32 parm, u32 *parm_out) 278 { 279 struct opregion_swsci *swsci = dev_priv->opregion.swsci; 280 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 281 u32 scic, dslp; 282 u16 swsci_val; 283 int ret; 284 285 ret = check_swsci_function(dev_priv, function); 286 if (ret) 287 return ret; 288 289 /* Driver sleep timeout in ms. */ 290 dslp = swsci->dslp; 291 if (!dslp) { 292 /* The spec says 2ms should be the default, but it's too small 293 * for some machines. */ 294 dslp = 50; 295 } else if (dslp > MAX_DSLP) { 296 /* Hey bios, trust must be earned. */ 297 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 298 "using %u ms instead\n", dslp, MAX_DSLP); 299 dslp = MAX_DSLP; 300 } 301 302 /* The spec tells us to do this, but we are the only user... */ 303 scic = swsci->scic; 304 if (scic & SWSCI_SCIC_INDICATOR) { 305 drm_dbg(&dev_priv->drm, "SWSCI request already in progress\n"); 306 return -EBUSY; 307 } 308 309 scic = function | SWSCI_SCIC_INDICATOR; 310 311 swsci->parm = parm; 312 swsci->scic = scic; 313 314 /* Ensure SCI event is selected and event trigger is cleared. */ 315 pci_read_config_word(pdev, SWSCI, &swsci_val); 316 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) { 317 swsci_val |= SWSCI_SCISEL; 318 swsci_val &= ~SWSCI_GSSCIE; 319 pci_write_config_word(pdev, SWSCI, swsci_val); 320 } 321 322 /* Use event trigger to tell bios to check the mail. */ 323 swsci_val |= SWSCI_GSSCIE; 324 pci_write_config_word(pdev, SWSCI, swsci_val); 325 326 /* Poll for the result. */ 327 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0) 328 if (wait_for(C, dslp)) { 329 drm_dbg(&dev_priv->drm, "SWSCI request timed out\n"); 330 return -ETIMEDOUT; 331 } 332 333 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 334 SWSCI_SCIC_EXIT_STATUS_SHIFT; 335 336 /* Note: scic == 0 is an error! */ 337 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 338 drm_dbg(&dev_priv->drm, "SWSCI request error %u\n", scic); 339 return -EIO; 340 } 341 342 if (parm_out) 343 *parm_out = swsci->parm; 344 345 return 0; 346 347 #undef C 348 } 349 350 #define DISPLAY_TYPE_CRT 0 351 #define DISPLAY_TYPE_TV 1 352 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 353 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 354 355 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 356 bool enable) 357 { 358 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev); 359 u32 parm = 0; 360 u32 type = 0; 361 u32 port; 362 int ret; 363 364 /* don't care about old stuff for now */ 365 if (!HAS_DDI(dev_priv)) 366 return 0; 367 368 /* Avoid port out of bounds checks if SWSCI isn't there. */ 369 ret = check_swsci_function(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE); 370 if (ret) 371 return ret; 372 373 if (intel_encoder->type == INTEL_OUTPUT_DSI) 374 port = 0; 375 else 376 port = intel_encoder->port; 377 378 if (port == PORT_E) { 379 port = 0; 380 } else { 381 parm |= 1 << port; 382 port++; 383 } 384 385 /* 386 * The port numbering and mapping here is bizarre. The now-obsolete 387 * swsci spec supports ports numbered [0..4]. Port E is handled as a 388 * special case, but port F and beyond are not. The functionality is 389 * supposed to be obsolete for new platforms. Just bail out if the port 390 * number is out of bounds after mapping. 391 */ 392 if (port > 4) { 393 drm_dbg_kms(&dev_priv->drm, 394 "[ENCODER:%d:%s] port %c (index %u) out of bounds for display power state notification\n", 395 intel_encoder->base.base.id, intel_encoder->base.name, 396 port_name(intel_encoder->port), port); 397 return -EINVAL; 398 } 399 400 if (!enable) 401 parm |= 4 << 8; 402 403 switch (intel_encoder->type) { 404 case INTEL_OUTPUT_ANALOG: 405 type = DISPLAY_TYPE_CRT; 406 break; 407 case INTEL_OUTPUT_DDI: 408 case INTEL_OUTPUT_DP: 409 case INTEL_OUTPUT_HDMI: 410 case INTEL_OUTPUT_DP_MST: 411 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 412 break; 413 case INTEL_OUTPUT_EDP: 414 case INTEL_OUTPUT_DSI: 415 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 416 break; 417 default: 418 drm_WARN_ONCE(&dev_priv->drm, 1, 419 "unsupported intel_encoder type %d\n", 420 intel_encoder->type); 421 return -EINVAL; 422 } 423 424 parm |= type << (16 + port * 3); 425 426 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 427 } 428 429 static const struct { 430 pci_power_t pci_power_state; 431 u32 parm; 432 } power_state_map[] = { 433 { PCI_D0, 0x00 }, 434 { PCI_D1, 0x01 }, 435 { PCI_D2, 0x02 }, 436 { PCI_D3hot, 0x04 }, 437 { PCI_D3cold, 0x04 }, 438 }; 439 440 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv, 441 pci_power_t state) 442 { 443 int i; 444 445 if (!HAS_DDI(dev_priv)) 446 return 0; 447 448 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 449 if (state == power_state_map[i].pci_power_state) 450 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE, 451 power_state_map[i].parm, NULL); 452 } 453 454 return -EINVAL; 455 } 456 457 static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp) 458 { 459 struct intel_connector *connector; 460 struct drm_connector_list_iter conn_iter; 461 struct opregion_asle *asle = dev_priv->opregion.asle; 462 struct drm_device *dev = &dev_priv->drm; 463 464 drm_dbg(&dev_priv->drm, "bclp = 0x%08x\n", bclp); 465 466 if (acpi_video_get_backlight_type() == acpi_backlight_native) { 467 drm_dbg_kms(&dev_priv->drm, 468 "opregion backlight request ignored\n"); 469 return 0; 470 } 471 472 if (!(bclp & ASLE_BCLP_VALID)) 473 return ASLC_BACKLIGHT_FAILED; 474 475 bclp &= ASLE_BCLP_MSK; 476 if (bclp > 255) 477 return ASLC_BACKLIGHT_FAILED; 478 479 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 480 481 /* 482 * Update backlight on all connectors that support backlight (usually 483 * only one). 484 */ 485 drm_dbg_kms(&dev_priv->drm, "updating opregion backlight %d/255\n", 486 bclp); 487 drm_connector_list_iter_begin(dev, &conn_iter); 488 for_each_intel_connector_iter(connector, &conn_iter) 489 intel_backlight_set_acpi(connector->base.state, bclp, 255); 490 drm_connector_list_iter_end(&conn_iter); 491 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID; 492 493 drm_modeset_unlock(&dev->mode_config.connection_mutex); 494 495 496 return 0; 497 } 498 499 static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi) 500 { 501 /* alsi is the current ALS reading in lux. 0 indicates below sensor 502 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 503 drm_dbg(&dev_priv->drm, "Illum is not supported\n"); 504 return ASLC_ALS_ILLUM_FAILED; 505 } 506 507 static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb) 508 { 509 drm_dbg(&dev_priv->drm, "PWM freq is not supported\n"); 510 return ASLC_PWM_FREQ_FAILED; 511 } 512 513 static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit) 514 { 515 /* Panel fitting is currently controlled by the X code, so this is a 516 noop until modesetting support works fully */ 517 drm_dbg(&dev_priv->drm, "Pfit is not supported\n"); 518 return ASLC_PFIT_FAILED; 519 } 520 521 static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot) 522 { 523 drm_dbg(&dev_priv->drm, "SROT is not supported\n"); 524 return ASLC_ROTATION_ANGLES_FAILED; 525 } 526 527 static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer) 528 { 529 if (!iuer) 530 drm_dbg(&dev_priv->drm, 531 "Button array event is not supported (nothing)\n"); 532 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 533 drm_dbg(&dev_priv->drm, 534 "Button array event is not supported (rotation lock)\n"); 535 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 536 drm_dbg(&dev_priv->drm, 537 "Button array event is not supported (volume down)\n"); 538 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 539 drm_dbg(&dev_priv->drm, 540 "Button array event is not supported (volume up)\n"); 541 if (iuer & ASLE_IUER_WINDOWS_BTN) 542 drm_dbg(&dev_priv->drm, 543 "Button array event is not supported (windows)\n"); 544 if (iuer & ASLE_IUER_POWER_BTN) 545 drm_dbg(&dev_priv->drm, 546 "Button array event is not supported (power)\n"); 547 548 return ASLC_BUTTON_ARRAY_FAILED; 549 } 550 551 static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer) 552 { 553 if (iuer & ASLE_IUER_CONVERTIBLE) 554 drm_dbg(&dev_priv->drm, 555 "Convertible is not supported (clamshell)\n"); 556 else 557 drm_dbg(&dev_priv->drm, 558 "Convertible is not supported (slate)\n"); 559 560 return ASLC_CONVERTIBLE_FAILED; 561 } 562 563 static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer) 564 { 565 if (iuer & ASLE_IUER_DOCKING) 566 drm_dbg(&dev_priv->drm, "Docking is not supported (docked)\n"); 567 else 568 drm_dbg(&dev_priv->drm, 569 "Docking is not supported (undocked)\n"); 570 571 return ASLC_DOCKING_FAILED; 572 } 573 574 static u32 asle_isct_state(struct drm_i915_private *dev_priv) 575 { 576 drm_dbg(&dev_priv->drm, "ISCT is not supported\n"); 577 return ASLC_ISCT_STATE_FAILED; 578 } 579 580 static void asle_work(struct work_struct *work) 581 { 582 struct intel_opregion *opregion = 583 container_of(work, struct intel_opregion, asle_work); 584 struct drm_i915_private *dev_priv = 585 container_of(opregion, struct drm_i915_private, opregion); 586 struct opregion_asle *asle = dev_priv->opregion.asle; 587 u32 aslc_stat = 0; 588 u32 aslc_req; 589 590 if (!asle) 591 return; 592 593 aslc_req = asle->aslc; 594 595 if (!(aslc_req & ASLC_REQ_MSK)) { 596 drm_dbg(&dev_priv->drm, 597 "No request on ASLC interrupt 0x%08x\n", aslc_req); 598 return; 599 } 600 601 if (aslc_req & ASLC_SET_ALS_ILLUM) 602 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi); 603 604 if (aslc_req & ASLC_SET_BACKLIGHT) 605 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp); 606 607 if (aslc_req & ASLC_SET_PFIT) 608 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit); 609 610 if (aslc_req & ASLC_SET_PWM_FREQ) 611 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb); 612 613 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 614 aslc_stat |= asle_set_supported_rotation_angles(dev_priv, 615 asle->srot); 616 617 if (aslc_req & ASLC_BUTTON_ARRAY) 618 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer); 619 620 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 621 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer); 622 623 if (aslc_req & ASLC_DOCKING_INDICATOR) 624 aslc_stat |= asle_set_docking(dev_priv, asle->iuer); 625 626 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 627 aslc_stat |= asle_isct_state(dev_priv); 628 629 asle->aslc = aslc_stat; 630 } 631 632 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv) 633 { 634 if (dev_priv->opregion.asle) 635 schedule_work(&dev_priv->opregion.asle_work); 636 } 637 638 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 639 #define ACPI_EV_LID (1<<1) 640 #define ACPI_EV_DOCK (1<<2) 641 642 /* 643 * The only video events relevant to opregion are 0x80. These indicate either a 644 * docking event, lid switch or display switch request. In Linux, these are 645 * handled by the dock, button and video drivers. 646 */ 647 static int intel_opregion_video_event(struct notifier_block *nb, 648 unsigned long val, void *data) 649 { 650 struct intel_opregion *opregion = container_of(nb, struct intel_opregion, 651 acpi_notifier); 652 struct acpi_bus_event *event = data; 653 struct opregion_acpi *acpi; 654 int ret = NOTIFY_OK; 655 656 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 657 return NOTIFY_DONE; 658 659 acpi = opregion->acpi; 660 661 if (event->type == 0x80 && ((acpi->cevt & 1) == 0)) 662 ret = NOTIFY_BAD; 663 664 acpi->csts = 0; 665 666 return ret; 667 } 668 669 /* 670 * Initialise the DIDL field in opregion. This passes a list of devices to 671 * the firmware. Values are defined by section B.4.2 of the ACPI specification 672 * (version 3) 673 */ 674 675 static void set_did(struct intel_opregion *opregion, int i, u32 val) 676 { 677 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 678 opregion->acpi->didl[i] = val; 679 } else { 680 i -= ARRAY_SIZE(opregion->acpi->didl); 681 682 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 683 return; 684 685 opregion->acpi->did2[i] = val; 686 } 687 } 688 689 static void intel_didl_outputs(struct drm_i915_private *dev_priv) 690 { 691 struct intel_opregion *opregion = &dev_priv->opregion; 692 struct intel_connector *connector; 693 struct drm_connector_list_iter conn_iter; 694 int i = 0, max_outputs; 695 696 /* 697 * In theory, did2, the extended didl, gets added at opregion version 698 * 3.0. In practice, however, we're supposed to set it for earlier 699 * versions as well, since a BIOS that doesn't understand did2 should 700 * not look at it anyway. Use a variable so we can tweak this if a need 701 * arises later. 702 */ 703 max_outputs = ARRAY_SIZE(opregion->acpi->didl) + 704 ARRAY_SIZE(opregion->acpi->did2); 705 706 intel_acpi_device_id_update(dev_priv); 707 708 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 709 for_each_intel_connector_iter(connector, &conn_iter) { 710 if (i < max_outputs) 711 set_did(opregion, i, connector->acpi_device_id); 712 i++; 713 } 714 drm_connector_list_iter_end(&conn_iter); 715 716 drm_dbg_kms(&dev_priv->drm, "%d outputs detected\n", i); 717 718 if (i > max_outputs) 719 drm_err(&dev_priv->drm, 720 "More than %d outputs in connector list\n", 721 max_outputs); 722 723 /* If fewer than max outputs, the list must be null terminated */ 724 if (i < max_outputs) 725 set_did(opregion, i, 0); 726 } 727 728 static void intel_setup_cadls(struct drm_i915_private *dev_priv) 729 { 730 struct intel_opregion *opregion = &dev_priv->opregion; 731 struct intel_connector *connector; 732 struct drm_connector_list_iter conn_iter; 733 int i = 0; 734 735 /* 736 * Initialize the CADL field from the connector device ids. This is 737 * essentially the same as copying from the DIDL. Technically, this is 738 * not always correct as display outputs may exist, but not active. This 739 * initialization is necessary for some Clevo laptops that check this 740 * field before processing the brightness and display switching hotkeys. 741 * 742 * Note that internal panels should be at the front of the connector 743 * list already, ensuring they're not left out. 744 */ 745 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 746 for_each_intel_connector_iter(connector, &conn_iter) { 747 if (i >= ARRAY_SIZE(opregion->acpi->cadl)) 748 break; 749 opregion->acpi->cadl[i++] = connector->acpi_device_id; 750 } 751 drm_connector_list_iter_end(&conn_iter); 752 753 /* If fewer than 8 active devices, the list must be null terminated */ 754 if (i < ARRAY_SIZE(opregion->acpi->cadl)) 755 opregion->acpi->cadl[i] = 0; 756 } 757 758 static void swsci_setup(struct drm_i915_private *dev_priv) 759 { 760 struct intel_opregion *opregion = &dev_priv->opregion; 761 bool requested_callbacks = false; 762 u32 tmp; 763 764 /* Sub-function code 0 is okay, let's allow them. */ 765 opregion->swsci_gbda_sub_functions = 1; 766 opregion->swsci_sbcb_sub_functions = 1; 767 768 /* We use GBDA to ask for supported GBDA calls. */ 769 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 770 /* make the bits match the sub-function codes */ 771 tmp <<= 1; 772 opregion->swsci_gbda_sub_functions |= tmp; 773 } 774 775 /* 776 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 777 * must not call interfaces that are not specifically requested by the 778 * bios. 779 */ 780 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 781 /* here, the bits already match sub-function codes */ 782 opregion->swsci_sbcb_sub_functions |= tmp; 783 requested_callbacks = true; 784 } 785 786 /* 787 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 788 * the callback is _requested_. But we still can't call interfaces that 789 * are not requested. 790 */ 791 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 792 /* make the bits match the sub-function codes */ 793 u32 low = tmp & 0x7ff; 794 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 795 tmp = (high << 4) | (low << 1) | 1; 796 797 /* best guess what to do with supported wrt requested */ 798 if (requested_callbacks) { 799 u32 req = opregion->swsci_sbcb_sub_functions; 800 if ((req & tmp) != req) 801 drm_dbg(&dev_priv->drm, 802 "SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", 803 req, tmp); 804 /* XXX: for now, trust the requested callbacks */ 805 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 806 } else { 807 opregion->swsci_sbcb_sub_functions |= tmp; 808 } 809 } 810 811 drm_dbg(&dev_priv->drm, 812 "SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 813 opregion->swsci_gbda_sub_functions, 814 opregion->swsci_sbcb_sub_functions); 815 } 816 817 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) 818 { 819 DRM_DEBUG_KMS("Falling back to manually reading VBT from " 820 "VBIOS ROM for %s\n", id->ident); 821 return 1; 822 } 823 824 static const struct dmi_system_id intel_no_opregion_vbt[] = { 825 { 826 .callback = intel_no_opregion_vbt_callback, 827 .ident = "ThinkCentre A57", 828 .matches = { 829 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 830 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), 831 }, 832 }, 833 { } 834 }; 835 836 static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv) 837 { 838 struct intel_opregion *opregion = &dev_priv->opregion; 839 const struct firmware *fw = NULL; 840 const char *name = dev_priv->params.vbt_firmware; 841 int ret; 842 843 if (!name || !*name) 844 return -ENOENT; 845 846 ret = request_firmware(&fw, name, dev_priv->drm.dev); 847 if (ret) { 848 drm_err(&dev_priv->drm, 849 "Requesting VBT firmware \"%s\" failed (%d)\n", 850 name, ret); 851 return ret; 852 } 853 854 if (intel_bios_is_valid_vbt(fw->data, fw->size)) { 855 opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL); 856 if (opregion->vbt_firmware) { 857 drm_dbg_kms(&dev_priv->drm, 858 "Found valid VBT firmware \"%s\"\n", name); 859 opregion->vbt = opregion->vbt_firmware; 860 opregion->vbt_size = fw->size; 861 ret = 0; 862 } else { 863 ret = -ENOMEM; 864 } 865 } else { 866 drm_dbg_kms(&dev_priv->drm, "Invalid VBT firmware \"%s\"\n", 867 name); 868 ret = -EINVAL; 869 } 870 871 release_firmware(fw); 872 873 return ret; 874 } 875 876 int intel_opregion_setup(struct drm_i915_private *dev_priv) 877 { 878 struct intel_opregion *opregion = &dev_priv->opregion; 879 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 880 u32 asls, mboxes; 881 char buf[sizeof(OPREGION_SIGNATURE)]; 882 int err = 0; 883 void *base; 884 const void *vbt; 885 u32 vbt_size; 886 887 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100); 888 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100); 889 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100); 890 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100); 891 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400); 892 893 pci_read_config_dword(pdev, ASLS, &asls); 894 drm_dbg(&dev_priv->drm, "graphic opregion physical addr: 0x%x\n", 895 asls); 896 if (asls == 0) { 897 drm_dbg(&dev_priv->drm, "ACPI OpRegion not supported!\n"); 898 return -ENOTSUPP; 899 } 900 901 INIT_WORK(&opregion->asle_work, asle_work); 902 903 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB); 904 if (!base) 905 return -ENOMEM; 906 907 memcpy(buf, base, sizeof(buf)); 908 909 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 910 drm_dbg(&dev_priv->drm, "opregion signature mismatch\n"); 911 err = -EINVAL; 912 goto err_out; 913 } 914 opregion->header = base; 915 opregion->lid_state = base + ACPI_CLID; 916 917 drm_dbg(&dev_priv->drm, "ACPI OpRegion version %u.%u.%u\n", 918 opregion->header->over.major, 919 opregion->header->over.minor, 920 opregion->header->over.revision); 921 922 mboxes = opregion->header->mboxes; 923 if (mboxes & MBOX_ACPI) { 924 drm_dbg(&dev_priv->drm, "Public ACPI methods supported\n"); 925 opregion->acpi = base + OPREGION_ACPI_OFFSET; 926 /* 927 * Indicate we handle monitor hotplug events ourselves so we do 928 * not need ACPI notifications for them. Disabling these avoids 929 * triggering the AML code doing the notifation, which may be 930 * broken as Windows also seems to disable these. 931 */ 932 opregion->acpi->chpd = 1; 933 } 934 935 if (mboxes & MBOX_SWSCI) { 936 u8 major = opregion->header->over.major; 937 938 if (major >= 3) { 939 drm_err(&dev_priv->drm, "SWSCI Mailbox #2 present for opregion v3.x, ignoring\n"); 940 } else { 941 if (major >= 2) 942 drm_dbg(&dev_priv->drm, "SWSCI Mailbox #2 present for opregion v2.x\n"); 943 drm_dbg(&dev_priv->drm, "SWSCI supported\n"); 944 opregion->swsci = base + OPREGION_SWSCI_OFFSET; 945 swsci_setup(dev_priv); 946 } 947 } 948 949 if (mboxes & MBOX_ASLE) { 950 drm_dbg(&dev_priv->drm, "ASLE supported\n"); 951 opregion->asle = base + OPREGION_ASLE_OFFSET; 952 953 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 954 } 955 956 if (mboxes & MBOX_ASLE_EXT) { 957 drm_dbg(&dev_priv->drm, "ASLE extension supported\n"); 958 opregion->asle_ext = base + OPREGION_ASLE_EXT_OFFSET; 959 } 960 961 if (mboxes & MBOX_BACKLIGHT) { 962 drm_dbg(&dev_priv->drm, "Mailbox #2 for backlight present\n"); 963 } 964 965 if (intel_load_vbt_firmware(dev_priv) == 0) 966 goto out; 967 968 if (dmi_check_system(intel_no_opregion_vbt)) 969 goto out; 970 971 if (opregion->header->over.major >= 2 && opregion->asle && 972 opregion->asle->rvda && opregion->asle->rvds) { 973 resource_size_t rvda = opregion->asle->rvda; 974 975 /* 976 * opregion 2.0: rvda is the physical VBT address. 977 * 978 * opregion 2.1+: rvda is unsigned, relative offset from 979 * opregion base, and should never point within opregion. 980 */ 981 if (opregion->header->over.major > 2 || 982 opregion->header->over.minor >= 1) { 983 drm_WARN_ON(&dev_priv->drm, rvda < OPREGION_SIZE); 984 985 rvda += asls; 986 } 987 988 opregion->rvda = memremap(rvda, opregion->asle->rvds, 989 MEMREMAP_WB); 990 991 vbt = opregion->rvda; 992 vbt_size = opregion->asle->rvds; 993 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 994 drm_dbg_kms(&dev_priv->drm, 995 "Found valid VBT in ACPI OpRegion (RVDA)\n"); 996 opregion->vbt = vbt; 997 opregion->vbt_size = vbt_size; 998 goto out; 999 } else { 1000 drm_dbg_kms(&dev_priv->drm, 1001 "Invalid VBT in ACPI OpRegion (RVDA)\n"); 1002 memunmap(opregion->rvda); 1003 opregion->rvda = NULL; 1004 } 1005 } 1006 1007 vbt = base + OPREGION_VBT_OFFSET; 1008 /* 1009 * The VBT specification says that if the ASLE ext mailbox is not used 1010 * its area is reserved, but on some CHT boards the VBT extends into the 1011 * ASLE ext area. Allow this even though it is against the spec, so we 1012 * do not end up rejecting the VBT on those boards (and end up not 1013 * finding the LCD panel because of this). 1014 */ 1015 vbt_size = (mboxes & MBOX_ASLE_EXT) ? 1016 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE; 1017 vbt_size -= OPREGION_VBT_OFFSET; 1018 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 1019 drm_dbg_kms(&dev_priv->drm, 1020 "Found valid VBT in ACPI OpRegion (Mailbox #4)\n"); 1021 opregion->vbt = vbt; 1022 opregion->vbt_size = vbt_size; 1023 } else { 1024 drm_dbg_kms(&dev_priv->drm, 1025 "Invalid VBT in ACPI OpRegion (Mailbox #4)\n"); 1026 } 1027 1028 out: 1029 return 0; 1030 1031 err_out: 1032 memunmap(base); 1033 return err; 1034 } 1035 1036 static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id) 1037 { 1038 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident); 1039 return 1; 1040 } 1041 1042 static const struct dmi_system_id intel_use_opregion_panel_type[] = { 1043 { 1044 .callback = intel_use_opregion_panel_type_callback, 1045 .ident = "Conrac GmbH IX45GM2", 1046 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"), 1047 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"), 1048 }, 1049 }, 1050 { } 1051 }; 1052 1053 int 1054 intel_opregion_get_panel_type(struct drm_i915_private *dev_priv) 1055 { 1056 u32 panel_details; 1057 int ret; 1058 1059 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details); 1060 if (ret) 1061 return ret; 1062 1063 ret = (panel_details >> 8) & 0xff; 1064 if (ret > 0x10) { 1065 drm_dbg_kms(&dev_priv->drm, 1066 "Invalid OpRegion panel type 0x%x\n", ret); 1067 return -EINVAL; 1068 } 1069 1070 /* fall back to VBT panel type? */ 1071 if (ret == 0x0) { 1072 drm_dbg_kms(&dev_priv->drm, "No panel type in OpRegion\n"); 1073 return -ENODEV; 1074 } 1075 1076 /* 1077 * So far we know that some machined must use it, others must not use it. 1078 * There doesn't seem to be any way to determine which way to go, except 1079 * via a quirk list :( 1080 */ 1081 if (!dmi_check_system(intel_use_opregion_panel_type)) { 1082 drm_dbg_kms(&dev_priv->drm, 1083 "Ignoring OpRegion panel type (%d)\n", ret - 1); 1084 return -ENODEV; 1085 } 1086 1087 return ret - 1; 1088 } 1089 1090 /** 1091 * intel_opregion_get_edid - Fetch EDID from ACPI OpRegion mailbox #5 1092 * @intel_connector: eDP connector 1093 * 1094 * This reads the ACPI Opregion mailbox #5 to extract the EDID that is passed 1095 * to it. 1096 * 1097 * Returns: 1098 * The EDID in the OpRegion, or NULL if there is none or it's invalid. 1099 * 1100 */ 1101 struct edid *intel_opregion_get_edid(struct intel_connector *intel_connector) 1102 { 1103 struct drm_connector *connector = &intel_connector->base; 1104 struct drm_i915_private *i915 = to_i915(connector->dev); 1105 struct intel_opregion *opregion = &i915->opregion; 1106 const void *in_edid; 1107 const struct edid *edid; 1108 struct edid *new_edid; 1109 int len; 1110 1111 if (!opregion->asle_ext) 1112 return NULL; 1113 1114 in_edid = opregion->asle_ext->bddc; 1115 1116 /* Validity corresponds to number of 128-byte blocks */ 1117 len = (opregion->asle_ext->phed & ASLE_PHED_EDID_VALID_MASK) * 128; 1118 if (!len || !memchr_inv(in_edid, 0, len)) 1119 return NULL; 1120 1121 edid = in_edid; 1122 1123 if (len < EDID_LENGTH * (1 + edid->extensions)) { 1124 drm_dbg_kms(&i915->drm, "Invalid EDID in ACPI OpRegion (Mailbox #5): too short\n"); 1125 return NULL; 1126 } 1127 new_edid = drm_edid_duplicate(edid); 1128 if (!new_edid) 1129 return NULL; 1130 if (!drm_edid_is_valid(new_edid)) { 1131 kfree(new_edid); 1132 drm_dbg_kms(&i915->drm, "Invalid EDID in ACPI OpRegion (Mailbox #5)\n"); 1133 return NULL; 1134 } 1135 return new_edid; 1136 } 1137 1138 void intel_opregion_register(struct drm_i915_private *i915) 1139 { 1140 struct intel_opregion *opregion = &i915->opregion; 1141 1142 if (!opregion->header) 1143 return; 1144 1145 if (opregion->acpi) { 1146 opregion->acpi_notifier.notifier_call = 1147 intel_opregion_video_event; 1148 register_acpi_notifier(&opregion->acpi_notifier); 1149 } 1150 1151 intel_opregion_resume(i915); 1152 } 1153 1154 void intel_opregion_resume(struct drm_i915_private *i915) 1155 { 1156 struct intel_opregion *opregion = &i915->opregion; 1157 1158 if (!opregion->header) 1159 return; 1160 1161 if (opregion->acpi) { 1162 intel_didl_outputs(i915); 1163 intel_setup_cadls(i915); 1164 1165 /* 1166 * Notify BIOS we are ready to handle ACPI video ext notifs. 1167 * Right now, all the events are handled by the ACPI video 1168 * module. We don't actually need to do anything with them. 1169 */ 1170 opregion->acpi->csts = 0; 1171 opregion->acpi->drdy = 1; 1172 } 1173 1174 if (opregion->asle) { 1175 opregion->asle->tche = ASLE_TCHE_BLC_EN; 1176 opregion->asle->ardy = ASLE_ARDY_READY; 1177 } 1178 1179 /* Some platforms abuse the _DSM to enable MUX */ 1180 intel_dsm_get_bios_data_funcs_supported(i915); 1181 1182 intel_opregion_notify_adapter(i915, PCI_D0); 1183 } 1184 1185 void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state) 1186 { 1187 struct intel_opregion *opregion = &i915->opregion; 1188 1189 if (!opregion->header) 1190 return; 1191 1192 intel_opregion_notify_adapter(i915, state); 1193 1194 if (opregion->asle) 1195 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 1196 1197 cancel_work_sync(&i915->opregion.asle_work); 1198 1199 if (opregion->acpi) 1200 opregion->acpi->drdy = 0; 1201 } 1202 1203 void intel_opregion_unregister(struct drm_i915_private *i915) 1204 { 1205 struct intel_opregion *opregion = &i915->opregion; 1206 1207 intel_opregion_suspend(i915, PCI_D1); 1208 1209 if (!opregion->header) 1210 return; 1211 1212 if (opregion->acpi_notifier.notifier_call) { 1213 unregister_acpi_notifier(&opregion->acpi_notifier); 1214 opregion->acpi_notifier.notifier_call = NULL; 1215 } 1216 1217 /* just clear all opregion memory pointers now */ 1218 memunmap(opregion->header); 1219 if (opregion->rvda) { 1220 memunmap(opregion->rvda); 1221 opregion->rvda = NULL; 1222 } 1223 if (opregion->vbt_firmware) { 1224 kfree(opregion->vbt_firmware); 1225 opregion->vbt_firmware = NULL; 1226 } 1227 opregion->header = NULL; 1228 opregion->acpi = NULL; 1229 opregion->swsci = NULL; 1230 opregion->asle = NULL; 1231 opregion->asle_ext = NULL; 1232 opregion->vbt = NULL; 1233 opregion->lid_state = NULL; 1234 } 1235