1 /* 2 * Copyright 2008 Intel Corporation <hong.liu@intel.com> 3 * Copyright 2008 Red Hat <mjg@redhat.com> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sub license, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 24 * SOFTWARE. 25 * 26 */ 27 28 #include <linux/dmi.h> 29 30 #include <drm/drmP.h> 31 #include <drm/i915_drm.h> 32 #include "i915_drv.h" 33 #include "intel_drv.h" 34 35 #include <contrib/dev/acpica/source/include/acpi.h> 36 #include <contrib/dev/acpica/source/include/accommon.h> 37 #include <dev/acpica/acpivar.h> 38 39 #define OPREGION_HEADER_OFFSET 0 40 #define OPREGION_ACPI_OFFSET 0x100 41 #define ACPI_CLID 0x01ac /* current lid state indicator */ 42 #define ACPI_CDCK 0x01b0 /* current docking state indicator */ 43 #define OPREGION_SWSCI_OFFSET 0x200 44 #define OPREGION_ASLE_OFFSET 0x300 45 #define OPREGION_VBT_OFFSET 0x400 46 #define OPREGION_ASLE_EXT_OFFSET 0x1C00 47 48 #define OPREGION_SIGNATURE "IntelGraphicsMem" 49 #define MBOX_ACPI (1<<0) 50 #define MBOX_SWSCI (1<<1) 51 #define MBOX_ASLE (1<<2) 52 #define MBOX_ASLE_EXT (1<<4) 53 54 struct opregion_header { 55 u8 signature[16]; 56 u32 size; 57 u32 opregion_ver; 58 u8 bios_ver[32]; 59 u8 vbios_ver[16]; 60 u8 driver_ver[16]; 61 u32 mboxes; 62 u32 driver_model; 63 u32 pcon; 64 u8 dver[32]; 65 u8 rsvd[124]; 66 } __packed; 67 68 /* OpRegion mailbox #1: public ACPI methods */ 69 struct opregion_acpi { 70 u32 drdy; /* driver readiness */ 71 u32 csts; /* notification status */ 72 u32 cevt; /* current event */ 73 u8 rsvd1[20]; 74 u32 didl[8]; /* supported display devices ID list */ 75 u32 cpdl[8]; /* currently presented display list */ 76 u32 cadl[8]; /* currently active display list */ 77 u32 nadl[8]; /* next active devices list */ 78 u32 aslp; /* ASL sleep time-out */ 79 u32 tidx; /* toggle table index */ 80 u32 chpd; /* current hotplug enable indicator */ 81 u32 clid; /* current lid state*/ 82 u32 cdck; /* current docking state */ 83 u32 sxsw; /* Sx state resume */ 84 u32 evts; /* ASL supported events */ 85 u32 cnot; /* current OS notification */ 86 u32 nrdy; /* driver status */ 87 u32 did2[7]; /* extended supported display devices ID list */ 88 u32 cpd2[7]; /* extended attached display devices list */ 89 u8 rsvd2[4]; 90 } __packed; 91 92 /* OpRegion mailbox #2: SWSCI */ 93 struct opregion_swsci { 94 u32 scic; /* SWSCI command|status|data */ 95 u32 parm; /* command parameters */ 96 u32 dslp; /* driver sleep time-out */ 97 u8 rsvd[244]; 98 } __packed; 99 100 /* OpRegion mailbox #3: ASLE */ 101 struct opregion_asle { 102 u32 ardy; /* driver readiness */ 103 u32 aslc; /* ASLE interrupt command */ 104 u32 tche; /* technology enabled indicator */ 105 u32 alsi; /* current ALS illuminance reading */ 106 u32 bclp; /* backlight brightness to set */ 107 u32 pfit; /* panel fitting state */ 108 u32 cblv; /* current brightness level */ 109 u16 bclm[20]; /* backlight level duty cycle mapping table */ 110 u32 cpfm; /* current panel fitting mode */ 111 u32 epfm; /* enabled panel fitting modes */ 112 u8 plut[74]; /* panel LUT and identifier */ 113 u32 pfmb; /* PWM freq and min brightness */ 114 u32 cddv; /* color correction default values */ 115 u32 pcft; /* power conservation features */ 116 u32 srot; /* supported rotation angles */ 117 u32 iuer; /* IUER events */ 118 u64 fdss; 119 u32 fdsp; 120 u32 stat; 121 u64 rvda; /* Physical address of raw vbt data */ 122 u32 rvds; /* Size of raw vbt data */ 123 u8 rsvd[58]; 124 } __packed; 125 126 /* OpRegion mailbox #5: ASLE ext */ 127 struct opregion_asle_ext { 128 u32 phed; /* Panel Header */ 129 u8 bddc[256]; /* Panel EDID */ 130 u8 rsvd[764]; 131 } __packed; 132 133 /* Driver readiness indicator */ 134 #define ASLE_ARDY_READY (1 << 0) 135 #define ASLE_ARDY_NOT_READY (0 << 0) 136 137 /* ASLE Interrupt Command (ASLC) bits */ 138 #define ASLC_SET_ALS_ILLUM (1 << 0) 139 #define ASLC_SET_BACKLIGHT (1 << 1) 140 #define ASLC_SET_PFIT (1 << 2) 141 #define ASLC_SET_PWM_FREQ (1 << 3) 142 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4) 143 #define ASLC_BUTTON_ARRAY (1 << 5) 144 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6) 145 #define ASLC_DOCKING_INDICATOR (1 << 7) 146 #define ASLC_ISCT_STATE_CHANGE (1 << 8) 147 #define ASLC_REQ_MSK 0x1ff 148 /* response bits */ 149 #define ASLC_ALS_ILLUM_FAILED (1 << 10) 150 #define ASLC_BACKLIGHT_FAILED (1 << 12) 151 #define ASLC_PFIT_FAILED (1 << 14) 152 #define ASLC_PWM_FREQ_FAILED (1 << 16) 153 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18) 154 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20) 155 #define ASLC_CONVERTIBLE_FAILED (1 << 22) 156 #define ASLC_DOCKING_FAILED (1 << 24) 157 #define ASLC_ISCT_STATE_FAILED (1 << 26) 158 159 /* Technology enabled indicator */ 160 #define ASLE_TCHE_ALS_EN (1 << 0) 161 #define ASLE_TCHE_BLC_EN (1 << 1) 162 #define ASLE_TCHE_PFIT_EN (1 << 2) 163 #define ASLE_TCHE_PFMB_EN (1 << 3) 164 165 /* ASLE backlight brightness to set */ 166 #define ASLE_BCLP_VALID (1<<31) 167 #define ASLE_BCLP_MSK (~(1<<31)) 168 169 /* ASLE panel fitting request */ 170 #define ASLE_PFIT_VALID (1<<31) 171 #define ASLE_PFIT_CENTER (1<<0) 172 #define ASLE_PFIT_STRETCH_TEXT (1<<1) 173 #define ASLE_PFIT_STRETCH_GFX (1<<2) 174 175 /* PWM frequency and minimum brightness */ 176 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) 177 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) 178 #define ASLE_PFMB_PWM_MASK (0x7ffffe00) 179 #define ASLE_PFMB_PWM_VALID (1<<31) 180 181 #define ASLE_CBLV_VALID (1<<31) 182 183 /* IUER */ 184 #define ASLE_IUER_DOCKING (1 << 7) 185 #define ASLE_IUER_CONVERTIBLE (1 << 6) 186 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4) 187 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3) 188 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2) 189 #define ASLE_IUER_WINDOWS_BTN (1 << 1) 190 #define ASLE_IUER_POWER_BTN (1 << 0) 191 192 /* Software System Control Interrupt (SWSCI) */ 193 #define SWSCI_SCIC_INDICATOR (1 << 0) 194 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 195 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) 196 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 197 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) 198 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 199 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) 200 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 201 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) 202 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 203 204 #define SWSCI_FUNCTION_CODE(main, sub) \ 205 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ 206 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) 207 208 /* SWSCI: Get BIOS Data (GBDA) */ 209 #define SWSCI_GBDA 4 210 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) 211 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) 212 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) 213 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) 214 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) 215 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) 216 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) 217 218 /* SWSCI: System BIOS Callbacks (SBCB) */ 219 #define SWSCI_SBCB 6 220 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) 221 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) 222 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) 223 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) 224 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) 225 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) 226 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) 227 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) 228 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) 229 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) 230 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) 231 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) 232 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) 233 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) 234 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) 235 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) 236 237 #define ACPI_OTHER_OUTPUT (0<<8) 238 #define ACPI_VGA_OUTPUT (1<<8) 239 #define ACPI_TV_OUTPUT (2<<8) 240 #define ACPI_DIGITAL_OUTPUT (3<<8) 241 #define ACPI_LVDS_OUTPUT (4<<8) 242 243 #define MAX_DSLP 1500 244 245 static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out) 246 { 247 struct drm_i915_private *dev_priv = dev->dev_private; 248 struct opregion_swsci *swsci = dev_priv->opregion.swsci; 249 u32 main_function, sub_function, scic; 250 u16 swsci_val; 251 u32 dslp; 252 253 if (!swsci) 254 return -ENODEV; 255 256 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 257 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 258 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 259 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 260 261 /* Check if we can call the function. See swsci_setup for details. */ 262 if (main_function == SWSCI_SBCB) { 263 if ((dev_priv->opregion.swsci_sbcb_sub_functions & 264 (1 << sub_function)) == 0) 265 return -EINVAL; 266 } else if (main_function == SWSCI_GBDA) { 267 if ((dev_priv->opregion.swsci_gbda_sub_functions & 268 (1 << sub_function)) == 0) 269 return -EINVAL; 270 } 271 272 /* Driver sleep timeout in ms. */ 273 dslp = swsci->dslp; 274 if (!dslp) { 275 /* The spec says 2ms should be the default, but it's too small 276 * for some machines. */ 277 dslp = 50; 278 } else if (dslp > MAX_DSLP) { 279 /* Hey bios, trust must be earned. */ 280 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 281 "using %u ms instead\n", dslp, MAX_DSLP); 282 dslp = MAX_DSLP; 283 } 284 285 /* The spec tells us to do this, but we are the only user... */ 286 scic = swsci->scic; 287 if (scic & SWSCI_SCIC_INDICATOR) { 288 DRM_DEBUG_DRIVER("SWSCI request already in progress\n"); 289 return -EBUSY; 290 } 291 292 scic = function | SWSCI_SCIC_INDICATOR; 293 294 swsci->parm = parm; 295 swsci->scic = scic; 296 297 /* Ensure SCI event is selected and event trigger is cleared. */ 298 pci_read_config_word(dev->pdev, SWSCI, &swsci_val); 299 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) { 300 swsci_val |= SWSCI_SCISEL; 301 swsci_val &= ~SWSCI_GSSCIE; 302 pci_write_config_word(dev->pdev, SWSCI, swsci_val); 303 } 304 305 /* Use event trigger to tell bios to check the mail. */ 306 swsci_val |= SWSCI_GSSCIE; 307 pci_write_config_word(dev->pdev, SWSCI, swsci_val); 308 309 /* Poll for the result. */ 310 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0) 311 if (wait_for(C, dslp)) { 312 DRM_DEBUG_DRIVER("SWSCI request timed out\n"); 313 return -ETIMEDOUT; 314 } 315 316 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 317 SWSCI_SCIC_EXIT_STATUS_SHIFT; 318 319 /* Note: scic == 0 is an error! */ 320 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 321 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic); 322 return -EIO; 323 } 324 325 if (parm_out) 326 *parm_out = swsci->parm; 327 328 return 0; 329 330 #undef C 331 } 332 333 #define DISPLAY_TYPE_CRT 0 334 #define DISPLAY_TYPE_TV 1 335 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 336 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 337 338 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 339 bool enable) 340 { 341 struct drm_device *dev = intel_encoder->base.dev; 342 u32 parm = 0; 343 u32 type = 0; 344 u32 port; 345 346 /* don't care about old stuff for now */ 347 if (!HAS_DDI(dev)) 348 return 0; 349 350 if (intel_encoder->type == INTEL_OUTPUT_DSI) 351 port = 0; 352 else 353 port = intel_ddi_get_encoder_port(intel_encoder); 354 355 if (port == PORT_E) { 356 port = 0; 357 } else { 358 parm |= 1 << port; 359 port++; 360 } 361 362 if (!enable) 363 parm |= 4 << 8; 364 365 switch (intel_encoder->type) { 366 case INTEL_OUTPUT_ANALOG: 367 type = DISPLAY_TYPE_CRT; 368 break; 369 case INTEL_OUTPUT_UNKNOWN: 370 case INTEL_OUTPUT_DISPLAYPORT: 371 case INTEL_OUTPUT_HDMI: 372 case INTEL_OUTPUT_DP_MST: 373 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 374 break; 375 case INTEL_OUTPUT_EDP: 376 case INTEL_OUTPUT_DSI: 377 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 378 break; 379 default: 380 WARN_ONCE(1, "unsupported intel_encoder type %d\n", 381 intel_encoder->type); 382 return -EINVAL; 383 } 384 385 parm |= type << (16 + port * 3); 386 387 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 388 } 389 390 static const struct { 391 pci_power_t pci_power_state; 392 u32 parm; 393 } power_state_map[] = { 394 { PCI_D0, 0x00 }, 395 { PCI_D1, 0x01 }, 396 { PCI_D2, 0x02 }, 397 { PCI_D3hot, 0x04 }, 398 { PCI_D3cold, 0x04 }, 399 }; 400 401 int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) 402 { 403 int i; 404 405 if (!HAS_DDI(dev)) 406 return 0; 407 408 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 409 if (state == power_state_map[i].pci_power_state) 410 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE, 411 power_state_map[i].parm, NULL); 412 } 413 414 return -EINVAL; 415 } 416 417 static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) 418 { 419 struct drm_i915_private *dev_priv = dev->dev_private; 420 struct intel_connector *connector; 421 struct opregion_asle *asle = dev_priv->opregion.asle; 422 423 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); 424 425 #ifndef __DragonFly__ 426 if (acpi_video_get_backlight_type() == acpi_backlight_native) { 427 DRM_DEBUG_KMS("opregion backlight request ignored\n"); 428 return 0; 429 } 430 #endif 431 432 if (!(bclp & ASLE_BCLP_VALID)) 433 return ASLC_BACKLIGHT_FAILED; 434 435 bclp &= ASLE_BCLP_MSK; 436 if (bclp > 255) 437 return ASLC_BACKLIGHT_FAILED; 438 439 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 440 441 /* 442 * Update backlight on all connectors that support backlight (usually 443 * only one). 444 */ 445 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); 446 for_each_intel_connector(dev, connector) 447 intel_panel_set_backlight_acpi(connector, bclp, 255); 448 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID; 449 450 drm_modeset_unlock(&dev->mode_config.connection_mutex); 451 452 453 return 0; 454 } 455 456 static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) 457 { 458 /* alsi is the current ALS reading in lux. 0 indicates below sensor 459 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 460 DRM_DEBUG_DRIVER("Illum is not supported\n"); 461 return ASLC_ALS_ILLUM_FAILED; 462 } 463 464 static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) 465 { 466 DRM_DEBUG_DRIVER("PWM freq is not supported\n"); 467 return ASLC_PWM_FREQ_FAILED; 468 } 469 470 static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) 471 { 472 /* Panel fitting is currently controlled by the X code, so this is a 473 noop until modesetting support works fully */ 474 DRM_DEBUG_DRIVER("Pfit is not supported\n"); 475 return ASLC_PFIT_FAILED; 476 } 477 478 static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot) 479 { 480 DRM_DEBUG_DRIVER("SROT is not supported\n"); 481 return ASLC_ROTATION_ANGLES_FAILED; 482 } 483 484 static u32 asle_set_button_array(struct drm_device *dev, u32 iuer) 485 { 486 if (!iuer) 487 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n"); 488 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 489 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n"); 490 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 491 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n"); 492 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 493 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n"); 494 if (iuer & ASLE_IUER_WINDOWS_BTN) 495 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n"); 496 if (iuer & ASLE_IUER_POWER_BTN) 497 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n"); 498 499 return ASLC_BUTTON_ARRAY_FAILED; 500 } 501 502 static u32 asle_set_convertible(struct drm_device *dev, u32 iuer) 503 { 504 if (iuer & ASLE_IUER_CONVERTIBLE) 505 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n"); 506 else 507 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n"); 508 509 return ASLC_CONVERTIBLE_FAILED; 510 } 511 512 static u32 asle_set_docking(struct drm_device *dev, u32 iuer) 513 { 514 if (iuer & ASLE_IUER_DOCKING) 515 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n"); 516 else 517 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n"); 518 519 return ASLC_DOCKING_FAILED; 520 } 521 522 static u32 asle_isct_state(struct drm_device *dev) 523 { 524 DRM_DEBUG_DRIVER("ISCT is not supported\n"); 525 return ASLC_ISCT_STATE_FAILED; 526 } 527 528 static void asle_work(struct work_struct *work) 529 { 530 struct intel_opregion *opregion = 531 container_of(work, struct intel_opregion, asle_work); 532 struct drm_i915_private *dev_priv = 533 container_of(opregion, struct drm_i915_private, opregion); 534 struct drm_device *dev = dev_priv->dev; 535 struct opregion_asle *asle = dev_priv->opregion.asle; 536 u32 aslc_stat = 0; 537 u32 aslc_req; 538 539 if (!asle) 540 return; 541 542 aslc_req = asle->aslc; 543 544 if (!(aslc_req & ASLC_REQ_MSK)) { 545 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n", 546 aslc_req); 547 return; 548 } 549 550 if (aslc_req & ASLC_SET_ALS_ILLUM) 551 aslc_stat |= asle_set_als_illum(dev, asle->alsi); 552 553 if (aslc_req & ASLC_SET_BACKLIGHT) 554 aslc_stat |= asle_set_backlight(dev, asle->bclp); 555 556 if (aslc_req & ASLC_SET_PFIT) 557 aslc_stat |= asle_set_pfit(dev, asle->pfit); 558 559 if (aslc_req & ASLC_SET_PWM_FREQ) 560 aslc_stat |= asle_set_pwm_freq(dev, asle->pfmb); 561 562 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 563 aslc_stat |= asle_set_supported_rotation_angles(dev, 564 asle->srot); 565 566 if (aslc_req & ASLC_BUTTON_ARRAY) 567 aslc_stat |= asle_set_button_array(dev, asle->iuer); 568 569 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 570 aslc_stat |= asle_set_convertible(dev, asle->iuer); 571 572 if (aslc_req & ASLC_DOCKING_INDICATOR) 573 aslc_stat |= asle_set_docking(dev, asle->iuer); 574 575 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 576 aslc_stat |= asle_isct_state(dev); 577 578 asle->aslc = aslc_stat; 579 } 580 581 void intel_opregion_asle_intr(struct drm_device *dev) 582 { 583 struct drm_i915_private *dev_priv = dev->dev_private; 584 585 if (dev_priv->opregion.asle) 586 schedule_work(&dev_priv->opregion.asle_work); 587 } 588 589 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 590 #define ACPI_EV_LID (1<<1) 591 #define ACPI_EV_DOCK (1<<2) 592 593 static struct intel_opregion *system_opregion; 594 595 #if 0 596 static int intel_opregion_video_event(struct notifier_block *nb, 597 unsigned long val, void *data) 598 { 599 /* The only video events relevant to opregion are 0x80. These indicate 600 either a docking event, lid switch or display switch request. In 601 Linux, these are handled by the dock, button and video drivers. 602 */ 603 604 struct acpi_bus_event *event = data; 605 struct opregion_acpi *acpi; 606 int ret = NOTIFY_OK; 607 608 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 609 return NOTIFY_DONE; 610 611 if (!system_opregion) 612 return NOTIFY_DONE; 613 614 acpi = system_opregion->acpi; 615 616 if (event->type == 0x80 && ((acpi->cevt & 1) == 0)) 617 ret = NOTIFY_BAD; 618 619 acpi->csts = 0; 620 621 return ret; 622 } 623 624 static struct notifier_block intel_opregion_notifier = { 625 .notifier_call = intel_opregion_video_event, 626 }; 627 #endif 628 629 static int acpi_is_video_device(ACPI_HANDLE devh) { 630 ACPI_HANDLE h; 631 if (ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 632 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h))) { 633 return 0; 634 } 635 return 1; 636 } 637 638 /* 639 * Initialise the DIDL field in opregion. This passes a list of devices to 640 * the firmware. Values are defined by section B.4.2 of the ACPI specification 641 * (version 3) 642 */ 643 644 static u32 get_did(struct intel_opregion *opregion, int i) 645 { 646 u32 did; 647 648 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 649 did = opregion->acpi->didl[i]; 650 } else { 651 i -= ARRAY_SIZE(opregion->acpi->didl); 652 653 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 654 return 0; 655 656 did = opregion->acpi->did2[i]; 657 } 658 659 return did; 660 } 661 662 static void set_did(struct intel_opregion *opregion, int i, u32 val) 663 { 664 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 665 opregion->acpi->didl[i] = val; 666 } else { 667 i -= ARRAY_SIZE(opregion->acpi->didl); 668 669 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 670 return; 671 672 opregion->acpi->did2[i] = val; 673 } 674 } 675 676 static void intel_didl_outputs(struct drm_device *dev) 677 { 678 struct drm_i915_private *dev_priv = dev->dev_private; 679 struct intel_opregion *opregion = &dev_priv->opregion; 680 struct drm_connector *connector; 681 ACPI_HANDLE handle, acpi_cdev, acpi_video_bus; 682 u32 device_id; 683 ACPI_STATUS status; 684 u32 temp, max_outputs; 685 int i = 0; 686 687 handle = acpi_get_handle(dev->dev->bsddev); 688 if (!handle) 689 return; 690 691 if (acpi_is_video_device(handle)) 692 acpi_video_bus = handle; 693 else { 694 acpi_cdev = NULL; 695 acpi_video_bus = NULL; 696 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, handle, acpi_cdev, 697 &acpi_cdev) != AE_NOT_FOUND) { 698 if (acpi_is_video_device(acpi_cdev)) { 699 acpi_video_bus = acpi_cdev; 700 break; 701 } 702 } 703 } 704 705 if (!acpi_video_bus) { 706 DRM_DEBUG_KMS("No ACPI video bus found\n"); 707 return; 708 } 709 710 /* 711 * In theory, did2, the extended didl, gets added at opregion version 712 * 3.0. In practice, however, we're supposed to set it for earlier 713 * versions as well, since a BIOS that doesn't understand did2 should 714 * not look at it anyway. Use a variable so we can tweak this if a need 715 * arises later. 716 */ 717 max_outputs = ARRAY_SIZE(opregion->acpi->didl) + 718 ARRAY_SIZE(opregion->acpi->did2); 719 720 #ifdef __DragonFly__ 721 acpi_cdev = NULL; 722 #endif 723 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpi_video_bus, acpi_cdev, 724 &acpi_cdev) != AE_NOT_FOUND) { 725 if (i >= max_outputs) { 726 DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n", 727 max_outputs); 728 return; 729 } 730 status = acpi_GetInteger(acpi_cdev, "_ADR", &device_id); 731 if (ACPI_SUCCESS(status)) { 732 if (!device_id) 733 goto blind_set; 734 set_did(opregion, i++, (u32)(device_id & 0x0f0f)); 735 } 736 } 737 738 end: 739 DRM_DEBUG_KMS("%d outputs detected\n", i); 740 741 /* If fewer than max outputs, the list must be null terminated */ 742 if (i < max_outputs) 743 set_did(opregion, i, 0); 744 return; 745 746 blind_set: 747 i = 0; 748 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 749 int output_type = ACPI_OTHER_OUTPUT; 750 if (i >= max_outputs) { 751 DRM_DEBUG_KMS("More than %u outputs in connector list\n", 752 max_outputs); 753 return; 754 } 755 switch (connector->connector_type) { 756 case DRM_MODE_CONNECTOR_VGA: 757 case DRM_MODE_CONNECTOR_DVIA: 758 output_type = ACPI_VGA_OUTPUT; 759 break; 760 case DRM_MODE_CONNECTOR_Composite: 761 case DRM_MODE_CONNECTOR_SVIDEO: 762 case DRM_MODE_CONNECTOR_Component: 763 case DRM_MODE_CONNECTOR_9PinDIN: 764 output_type = ACPI_TV_OUTPUT; 765 break; 766 case DRM_MODE_CONNECTOR_DVII: 767 case DRM_MODE_CONNECTOR_DVID: 768 case DRM_MODE_CONNECTOR_DisplayPort: 769 case DRM_MODE_CONNECTOR_HDMIA: 770 case DRM_MODE_CONNECTOR_HDMIB: 771 output_type = ACPI_DIGITAL_OUTPUT; 772 break; 773 case DRM_MODE_CONNECTOR_LVDS: 774 output_type = ACPI_LVDS_OUTPUT; 775 break; 776 } 777 temp = get_did(opregion, i); 778 set_did(opregion, i, temp | (1 << 31) | output_type | i); 779 i++; 780 } 781 goto end; 782 } 783 784 static void intel_setup_cadls(struct drm_device *dev) 785 { 786 struct drm_i915_private *dev_priv = dev->dev_private; 787 struct intel_opregion *opregion = &dev_priv->opregion; 788 int i = 0; 789 u32 disp_id; 790 791 /* Initialize the CADL field by duplicating the DIDL values. 792 * Technically, this is not always correct as display outputs may exist, 793 * but not active. This initialization is necessary for some Clevo 794 * laptops that check this field before processing the brightness and 795 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if 796 * there are less than eight devices. */ 797 do { 798 disp_id = get_did(opregion, i); 799 opregion->acpi->cadl[i] = disp_id; 800 } while (++i < 8 && disp_id != 0); 801 } 802 803 void intel_opregion_init(struct drm_device *dev) 804 { 805 struct drm_i915_private *dev_priv = dev->dev_private; 806 struct intel_opregion *opregion = &dev_priv->opregion; 807 808 if (!opregion->header) 809 return; 810 811 if (opregion->acpi) { 812 intel_didl_outputs(dev); 813 intel_setup_cadls(dev); 814 815 /* Notify BIOS we are ready to handle ACPI video ext notifs. 816 * Right now, all the events are handled by the ACPI video module. 817 * We don't actually need to do anything with them. */ 818 opregion->acpi->csts = 0; 819 opregion->acpi->drdy = 1; 820 821 system_opregion = opregion; 822 } 823 824 if (opregion->asle) { 825 opregion->asle->tche = ASLE_TCHE_BLC_EN; 826 opregion->asle->ardy = ASLE_ARDY_READY; 827 } 828 } 829 830 void intel_opregion_fini(struct drm_device *dev) 831 { 832 struct drm_i915_private *dev_priv = dev->dev_private; 833 struct intel_opregion *opregion = &dev_priv->opregion; 834 835 if (!opregion->header) 836 return; 837 838 if (opregion->asle) 839 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 840 841 cancel_work_sync(&dev_priv->opregion.asle_work); 842 843 if (opregion->acpi) { 844 opregion->acpi->drdy = 0; 845 846 system_opregion = NULL; 847 } 848 849 /* just clear all opregion memory pointers now */ 850 iounmap(opregion->header); 851 if (opregion->rvda) { 852 iounmap(opregion->rvda); 853 opregion->rvda = NULL; 854 } 855 opregion->header = NULL; 856 opregion->acpi = NULL; 857 opregion->swsci = NULL; 858 opregion->asle = NULL; 859 opregion->vbt = NULL; 860 opregion->lid_state = NULL; 861 } 862 863 static void swsci_setup(struct drm_device *dev) 864 { 865 struct drm_i915_private *dev_priv = dev->dev_private; 866 struct intel_opregion *opregion = &dev_priv->opregion; 867 bool requested_callbacks = false; 868 u32 tmp; 869 870 /* Sub-function code 0 is okay, let's allow them. */ 871 opregion->swsci_gbda_sub_functions = 1; 872 opregion->swsci_sbcb_sub_functions = 1; 873 874 /* We use GBDA to ask for supported GBDA calls. */ 875 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 876 /* make the bits match the sub-function codes */ 877 tmp <<= 1; 878 opregion->swsci_gbda_sub_functions |= tmp; 879 } 880 881 /* 882 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 883 * must not call interfaces that are not specifically requested by the 884 * bios. 885 */ 886 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 887 /* here, the bits already match sub-function codes */ 888 opregion->swsci_sbcb_sub_functions |= tmp; 889 requested_callbacks = true; 890 } 891 892 /* 893 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 894 * the callback is _requested_. But we still can't call interfaces that 895 * are not requested. 896 */ 897 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 898 /* make the bits match the sub-function codes */ 899 u32 low = tmp & 0x7ff; 900 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 901 tmp = (high << 4) | (low << 1) | 1; 902 903 /* best guess what to do with supported wrt requested */ 904 if (requested_callbacks) { 905 u32 req = opregion->swsci_sbcb_sub_functions; 906 if ((req & tmp) != req) 907 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp); 908 /* XXX: for now, trust the requested callbacks */ 909 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 910 } else { 911 opregion->swsci_sbcb_sub_functions |= tmp; 912 } 913 } 914 915 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 916 opregion->swsci_gbda_sub_functions, 917 opregion->swsci_sbcb_sub_functions); 918 } 919 920 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) 921 { 922 DRM_DEBUG_KMS("Falling back to manually reading VBT from " 923 "VBIOS ROM for %s\n", id->ident); 924 return 1; 925 } 926 927 static const struct dmi_system_id intel_no_opregion_vbt[] = { 928 { 929 .callback = intel_no_opregion_vbt_callback, 930 .ident = "ThinkCentre A57", 931 .matches = { 932 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 933 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), 934 }, 935 }, 936 { } 937 }; 938 939 int intel_opregion_setup(struct drm_device *dev) 940 { 941 struct drm_i915_private *dev_priv = dev->dev_private; 942 struct intel_opregion *opregion = &dev_priv->opregion; 943 u32 asls, mboxes; 944 char buf[sizeof(OPREGION_SIGNATURE)]; 945 int err = 0; 946 char *base; 947 948 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100); 949 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100); 950 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100); 951 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100); 952 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400); 953 954 pci_read_config_dword(dev->pdev, ASLS, &asls); 955 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); 956 if (asls == 0) { 957 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); 958 return -ENOTSUP; 959 } 960 961 INIT_WORK(&opregion->asle_work, asle_work); 962 963 base = (void *)pmap_mapbios(asls, OPREGION_SIZE); 964 if (!base) 965 return -ENOMEM; 966 967 memcpy(buf, base, sizeof(buf)); 968 969 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 970 DRM_DEBUG_DRIVER("opregion signature mismatch\n"); 971 err = -EINVAL; 972 goto err_out; 973 } 974 opregion->header = (struct opregion_header *)base; 975 976 opregion->lid_state = (u32 *)(base + ACPI_CLID); 977 978 mboxes = opregion->header->mboxes; 979 if (mboxes & MBOX_ACPI) { 980 DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); 981 opregion->acpi = (struct opregion_acpi *)(base + OPREGION_ACPI_OFFSET); 982 } 983 984 if (mboxes & MBOX_SWSCI) { 985 DRM_DEBUG_DRIVER("SWSCI supported\n"); 986 opregion->swsci = (struct opregion_swsci *)(base + OPREGION_SWSCI_OFFSET); 987 swsci_setup(dev); 988 } 989 990 if (mboxes & MBOX_ASLE) { 991 DRM_DEBUG_DRIVER("ASLE supported\n"); 992 opregion->asle = (struct opregion_asle *)(base + OPREGION_ASLE_OFFSET); 993 994 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 995 } 996 997 if (mboxes & MBOX_ASLE_EXT) 998 DRM_DEBUG_DRIVER("ASLE extension supported\n"); 999 1000 if (!dmi_check_system(intel_no_opregion_vbt)) { 1001 const void *vbt = NULL; 1002 u32 vbt_size = 0; 1003 1004 if (opregion->header->opregion_ver >= 2 && opregion->asle && 1005 opregion->asle->rvda && opregion->asle->rvds) { 1006 opregion->rvda = pmap_mapbios(opregion->asle->rvda, 1007 opregion->asle->rvds); 1008 vbt = opregion->rvda; 1009 vbt_size = opregion->asle->rvds; 1010 } 1011 1012 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 1013 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n"); 1014 opregion->vbt = vbt; 1015 opregion->vbt_size = vbt_size; 1016 } else { 1017 vbt = base + OPREGION_VBT_OFFSET; 1018 vbt_size = OPREGION_ASLE_EXT_OFFSET - OPREGION_VBT_OFFSET; 1019 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 1020 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n"); 1021 opregion->vbt = vbt; 1022 opregion->vbt_size = vbt_size; 1023 } 1024 } 1025 } 1026 1027 return 0; 1028 1029 err_out: 1030 iounmap(base); 1031 return err; 1032 } 1033 1034 static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id) 1035 { 1036 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident); 1037 return 1; 1038 } 1039 1040 static const struct dmi_system_id intel_use_opregion_panel_type[] = { 1041 { 1042 .callback = intel_use_opregion_panel_type_callback, 1043 .ident = "Conrac GmbH IX45GM2", 1044 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"), 1045 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"), 1046 }, 1047 }, 1048 { } 1049 }; 1050 1051 int 1052 intel_opregion_get_panel_type(struct drm_device *dev) 1053 { 1054 u32 panel_details; 1055 int ret; 1056 1057 ret = swsci(dev, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details); 1058 if (ret) { 1059 DRM_DEBUG_KMS("Failed to get panel details from OpRegion (%d)\n", 1060 ret); 1061 return ret; 1062 } 1063 1064 ret = (panel_details >> 8) & 0xff; 1065 if (ret > 0x10) { 1066 DRM_DEBUG_KMS("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_DEBUG_KMS("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_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1); 1083 return -ENODEV; 1084 } 1085 1086 /* 1087 * FIXME On Dell XPS 13 9350 the OpRegion panel type (0) gives us 1088 * low vswing for eDP, whereas the VBT panel type (2) gives us normal 1089 * vswing instead. Low vswing results in some display flickers, so 1090 * let's simply ignore the OpRegion panel type on SKL for now. 1091 */ 1092 if (IS_SKYLAKE(dev)) { 1093 DRM_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1); 1094 return -ENODEV; 1095 } 1096 1097 return ret - 1; 1098 } 1099