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 "display/intel_panel.h" 34 35 #include "i915_drv.h" 36 #include "intel_acpi.h" 37 #include "intel_display_types.h" 38 #include "intel_opregion.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 /* Software System Control Interrupt (SWSCI) */ 200 #define SWSCI_SCIC_INDICATOR (1 << 0) 201 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 202 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) 203 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 204 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) 205 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 206 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) 207 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 208 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) 209 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 210 211 #define SWSCI_FUNCTION_CODE(main, sub) \ 212 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ 213 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) 214 215 /* SWSCI: Get BIOS Data (GBDA) */ 216 #define SWSCI_GBDA 4 217 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) 218 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) 219 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) 220 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) 221 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) 222 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) 223 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) 224 225 /* SWSCI: System BIOS Callbacks (SBCB) */ 226 #define SWSCI_SBCB 6 227 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) 228 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) 229 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) 230 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) 231 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) 232 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) 233 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) 234 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) 235 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) 236 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) 237 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) 238 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) 239 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) 240 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) 241 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) 242 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) 243 244 #define MAX_DSLP 1500 245 246 static int swsci(struct drm_i915_private *dev_priv, 247 u32 function, u32 parm, u32 *parm_out) 248 { 249 struct opregion_swsci *swsci = dev_priv->opregion.swsci; 250 struct pci_dev *pdev = dev_priv->drm.pdev; 251 u32 main_function, sub_function, scic; 252 u16 swsci_val; 253 u32 dslp; 254 255 if (!swsci) 256 return -ENODEV; 257 258 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 259 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 260 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 261 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 262 263 /* Check if we can call the function. See swsci_setup for details. */ 264 if (main_function == SWSCI_SBCB) { 265 if ((dev_priv->opregion.swsci_sbcb_sub_functions & 266 (1 << sub_function)) == 0) 267 return -EINVAL; 268 } else if (main_function == SWSCI_GBDA) { 269 if ((dev_priv->opregion.swsci_gbda_sub_functions & 270 (1 << sub_function)) == 0) 271 return -EINVAL; 272 } 273 274 /* Driver sleep timeout in ms. */ 275 dslp = swsci->dslp; 276 if (!dslp) { 277 /* The spec says 2ms should be the default, but it's too small 278 * for some machines. */ 279 dslp = 50; 280 } else if (dslp > MAX_DSLP) { 281 /* Hey bios, trust must be earned. */ 282 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 283 "using %u ms instead\n", dslp, MAX_DSLP); 284 dslp = MAX_DSLP; 285 } 286 287 /* The spec tells us to do this, but we are the only user... */ 288 scic = swsci->scic; 289 if (scic & SWSCI_SCIC_INDICATOR) { 290 drm_dbg(&dev_priv->drm, "SWSCI request already in progress\n"); 291 return -EBUSY; 292 } 293 294 scic = function | SWSCI_SCIC_INDICATOR; 295 296 swsci->parm = parm; 297 swsci->scic = scic; 298 299 /* Ensure SCI event is selected and event trigger is cleared. */ 300 pci_read_config_word(pdev, SWSCI, &swsci_val); 301 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) { 302 swsci_val |= SWSCI_SCISEL; 303 swsci_val &= ~SWSCI_GSSCIE; 304 pci_write_config_word(pdev, SWSCI, swsci_val); 305 } 306 307 /* Use event trigger to tell bios to check the mail. */ 308 swsci_val |= SWSCI_GSSCIE; 309 pci_write_config_word(pdev, SWSCI, swsci_val); 310 311 /* Poll for the result. */ 312 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0) 313 if (wait_for(C, dslp)) { 314 drm_dbg(&dev_priv->drm, "SWSCI request timed out\n"); 315 return -ETIMEDOUT; 316 } 317 318 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 319 SWSCI_SCIC_EXIT_STATUS_SHIFT; 320 321 /* Note: scic == 0 is an error! */ 322 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 323 drm_dbg(&dev_priv->drm, "SWSCI request error %u\n", scic); 324 return -EIO; 325 } 326 327 if (parm_out) 328 *parm_out = swsci->parm; 329 330 return 0; 331 332 #undef C 333 } 334 335 #define DISPLAY_TYPE_CRT 0 336 #define DISPLAY_TYPE_TV 1 337 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 338 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 339 340 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 341 bool enable) 342 { 343 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev); 344 u32 parm = 0; 345 u32 type = 0; 346 u32 port; 347 348 /* don't care about old stuff for now */ 349 if (!HAS_DDI(dev_priv)) 350 return 0; 351 352 if (intel_encoder->type == INTEL_OUTPUT_DSI) 353 port = 0; 354 else 355 port = intel_encoder->port; 356 357 if (port == PORT_E) { 358 port = 0; 359 } else { 360 parm |= 1 << port; 361 port++; 362 } 363 364 if (!enable) 365 parm |= 4 << 8; 366 367 switch (intel_encoder->type) { 368 case INTEL_OUTPUT_ANALOG: 369 type = DISPLAY_TYPE_CRT; 370 break; 371 case INTEL_OUTPUT_DDI: 372 case INTEL_OUTPUT_DP: 373 case INTEL_OUTPUT_HDMI: 374 case INTEL_OUTPUT_DP_MST: 375 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 376 break; 377 case INTEL_OUTPUT_EDP: 378 case INTEL_OUTPUT_DSI: 379 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 380 break; 381 default: 382 drm_WARN_ONCE(&dev_priv->drm, 1, 383 "unsupported intel_encoder type %d\n", 384 intel_encoder->type); 385 return -EINVAL; 386 } 387 388 parm |= type << (16 + port * 3); 389 390 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 391 } 392 393 static const struct { 394 pci_power_t pci_power_state; 395 u32 parm; 396 } power_state_map[] = { 397 { PCI_D0, 0x00 }, 398 { PCI_D1, 0x01 }, 399 { PCI_D2, 0x02 }, 400 { PCI_D3hot, 0x04 }, 401 { PCI_D3cold, 0x04 }, 402 }; 403 404 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv, 405 pci_power_t state) 406 { 407 int i; 408 409 if (!HAS_DDI(dev_priv)) 410 return 0; 411 412 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 413 if (state == power_state_map[i].pci_power_state) 414 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE, 415 power_state_map[i].parm, NULL); 416 } 417 418 return -EINVAL; 419 } 420 421 static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp) 422 { 423 struct intel_connector *connector; 424 struct drm_connector_list_iter conn_iter; 425 struct opregion_asle *asle = dev_priv->opregion.asle; 426 struct drm_device *dev = &dev_priv->drm; 427 428 drm_dbg(&dev_priv->drm, "bclp = 0x%08x\n", bclp); 429 430 if (acpi_video_get_backlight_type() == acpi_backlight_native) { 431 drm_dbg_kms(&dev_priv->drm, 432 "opregion backlight request ignored\n"); 433 return 0; 434 } 435 436 if (!(bclp & ASLE_BCLP_VALID)) 437 return ASLC_BACKLIGHT_FAILED; 438 439 bclp &= ASLE_BCLP_MSK; 440 if (bclp > 255) 441 return ASLC_BACKLIGHT_FAILED; 442 443 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 444 445 /* 446 * Update backlight on all connectors that support backlight (usually 447 * only one). 448 */ 449 drm_dbg_kms(&dev_priv->drm, "updating opregion backlight %d/255\n", 450 bclp); 451 drm_connector_list_iter_begin(dev, &conn_iter); 452 for_each_intel_connector_iter(connector, &conn_iter) 453 intel_panel_set_backlight_acpi(connector->base.state, bclp, 255); 454 drm_connector_list_iter_end(&conn_iter); 455 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID; 456 457 drm_modeset_unlock(&dev->mode_config.connection_mutex); 458 459 460 return 0; 461 } 462 463 static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi) 464 { 465 /* alsi is the current ALS reading in lux. 0 indicates below sensor 466 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 467 drm_dbg(&dev_priv->drm, "Illum is not supported\n"); 468 return ASLC_ALS_ILLUM_FAILED; 469 } 470 471 static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb) 472 { 473 drm_dbg(&dev_priv->drm, "PWM freq is not supported\n"); 474 return ASLC_PWM_FREQ_FAILED; 475 } 476 477 static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit) 478 { 479 /* Panel fitting is currently controlled by the X code, so this is a 480 noop until modesetting support works fully */ 481 drm_dbg(&dev_priv->drm, "Pfit is not supported\n"); 482 return ASLC_PFIT_FAILED; 483 } 484 485 static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot) 486 { 487 drm_dbg(&dev_priv->drm, "SROT is not supported\n"); 488 return ASLC_ROTATION_ANGLES_FAILED; 489 } 490 491 static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer) 492 { 493 if (!iuer) 494 drm_dbg(&dev_priv->drm, 495 "Button array event is not supported (nothing)\n"); 496 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 497 drm_dbg(&dev_priv->drm, 498 "Button array event is not supported (rotation lock)\n"); 499 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 500 drm_dbg(&dev_priv->drm, 501 "Button array event is not supported (volume down)\n"); 502 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 503 drm_dbg(&dev_priv->drm, 504 "Button array event is not supported (volume up)\n"); 505 if (iuer & ASLE_IUER_WINDOWS_BTN) 506 drm_dbg(&dev_priv->drm, 507 "Button array event is not supported (windows)\n"); 508 if (iuer & ASLE_IUER_POWER_BTN) 509 drm_dbg(&dev_priv->drm, 510 "Button array event is not supported (power)\n"); 511 512 return ASLC_BUTTON_ARRAY_FAILED; 513 } 514 515 static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer) 516 { 517 if (iuer & ASLE_IUER_CONVERTIBLE) 518 drm_dbg(&dev_priv->drm, 519 "Convertible is not supported (clamshell)\n"); 520 else 521 drm_dbg(&dev_priv->drm, 522 "Convertible is not supported (slate)\n"); 523 524 return ASLC_CONVERTIBLE_FAILED; 525 } 526 527 static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer) 528 { 529 if (iuer & ASLE_IUER_DOCKING) 530 drm_dbg(&dev_priv->drm, "Docking is not supported (docked)\n"); 531 else 532 drm_dbg(&dev_priv->drm, 533 "Docking is not supported (undocked)\n"); 534 535 return ASLC_DOCKING_FAILED; 536 } 537 538 static u32 asle_isct_state(struct drm_i915_private *dev_priv) 539 { 540 drm_dbg(&dev_priv->drm, "ISCT is not supported\n"); 541 return ASLC_ISCT_STATE_FAILED; 542 } 543 544 static void asle_work(struct work_struct *work) 545 { 546 struct intel_opregion *opregion = 547 container_of(work, struct intel_opregion, asle_work); 548 struct drm_i915_private *dev_priv = 549 container_of(opregion, struct drm_i915_private, opregion); 550 struct opregion_asle *asle = dev_priv->opregion.asle; 551 u32 aslc_stat = 0; 552 u32 aslc_req; 553 554 if (!asle) 555 return; 556 557 aslc_req = asle->aslc; 558 559 if (!(aslc_req & ASLC_REQ_MSK)) { 560 drm_dbg(&dev_priv->drm, 561 "No request on ASLC interrupt 0x%08x\n", aslc_req); 562 return; 563 } 564 565 if (aslc_req & ASLC_SET_ALS_ILLUM) 566 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi); 567 568 if (aslc_req & ASLC_SET_BACKLIGHT) 569 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp); 570 571 if (aslc_req & ASLC_SET_PFIT) 572 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit); 573 574 if (aslc_req & ASLC_SET_PWM_FREQ) 575 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb); 576 577 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 578 aslc_stat |= asle_set_supported_rotation_angles(dev_priv, 579 asle->srot); 580 581 if (aslc_req & ASLC_BUTTON_ARRAY) 582 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer); 583 584 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 585 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer); 586 587 if (aslc_req & ASLC_DOCKING_INDICATOR) 588 aslc_stat |= asle_set_docking(dev_priv, asle->iuer); 589 590 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 591 aslc_stat |= asle_isct_state(dev_priv); 592 593 asle->aslc = aslc_stat; 594 } 595 596 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv) 597 { 598 if (dev_priv->opregion.asle) 599 schedule_work(&dev_priv->opregion.asle_work); 600 } 601 602 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 603 #define ACPI_EV_LID (1<<1) 604 #define ACPI_EV_DOCK (1<<2) 605 606 /* 607 * The only video events relevant to opregion are 0x80. These indicate either a 608 * docking event, lid switch or display switch request. In Linux, these are 609 * handled by the dock, button and video drivers. 610 */ 611 static int intel_opregion_video_event(struct notifier_block *nb, 612 unsigned long val, void *data) 613 { 614 struct intel_opregion *opregion = container_of(nb, struct intel_opregion, 615 acpi_notifier); 616 struct acpi_bus_event *event = data; 617 struct opregion_acpi *acpi; 618 int ret = NOTIFY_OK; 619 620 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 621 return NOTIFY_DONE; 622 623 acpi = opregion->acpi; 624 625 if (event->type == 0x80 && ((acpi->cevt & 1) == 0)) 626 ret = NOTIFY_BAD; 627 628 acpi->csts = 0; 629 630 return ret; 631 } 632 633 /* 634 * Initialise the DIDL field in opregion. This passes a list of devices to 635 * the firmware. Values are defined by section B.4.2 of the ACPI specification 636 * (version 3) 637 */ 638 639 static void set_did(struct intel_opregion *opregion, int i, u32 val) 640 { 641 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 642 opregion->acpi->didl[i] = val; 643 } else { 644 i -= ARRAY_SIZE(opregion->acpi->didl); 645 646 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 647 return; 648 649 opregion->acpi->did2[i] = val; 650 } 651 } 652 653 static void intel_didl_outputs(struct drm_i915_private *dev_priv) 654 { 655 struct intel_opregion *opregion = &dev_priv->opregion; 656 struct intel_connector *connector; 657 struct drm_connector_list_iter conn_iter; 658 int i = 0, max_outputs; 659 660 /* 661 * In theory, did2, the extended didl, gets added at opregion version 662 * 3.0. In practice, however, we're supposed to set it for earlier 663 * versions as well, since a BIOS that doesn't understand did2 should 664 * not look at it anyway. Use a variable so we can tweak this if a need 665 * arises later. 666 */ 667 max_outputs = ARRAY_SIZE(opregion->acpi->didl) + 668 ARRAY_SIZE(opregion->acpi->did2); 669 670 intel_acpi_device_id_update(dev_priv); 671 672 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 673 for_each_intel_connector_iter(connector, &conn_iter) { 674 if (i < max_outputs) 675 set_did(opregion, i, connector->acpi_device_id); 676 i++; 677 } 678 drm_connector_list_iter_end(&conn_iter); 679 680 drm_dbg_kms(&dev_priv->drm, "%d outputs detected\n", i); 681 682 if (i > max_outputs) 683 drm_err(&dev_priv->drm, 684 "More than %d outputs in connector list\n", 685 max_outputs); 686 687 /* If fewer than max outputs, the list must be null terminated */ 688 if (i < max_outputs) 689 set_did(opregion, i, 0); 690 } 691 692 static void intel_setup_cadls(struct drm_i915_private *dev_priv) 693 { 694 struct intel_opregion *opregion = &dev_priv->opregion; 695 struct intel_connector *connector; 696 struct drm_connector_list_iter conn_iter; 697 int i = 0; 698 699 /* 700 * Initialize the CADL field from the connector device ids. This is 701 * essentially the same as copying from the DIDL. Technically, this is 702 * not always correct as display outputs may exist, but not active. This 703 * initialization is necessary for some Clevo laptops that check this 704 * field before processing the brightness and display switching hotkeys. 705 * 706 * Note that internal panels should be at the front of the connector 707 * list already, ensuring they're not left out. 708 */ 709 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 710 for_each_intel_connector_iter(connector, &conn_iter) { 711 if (i >= ARRAY_SIZE(opregion->acpi->cadl)) 712 break; 713 opregion->acpi->cadl[i++] = connector->acpi_device_id; 714 } 715 drm_connector_list_iter_end(&conn_iter); 716 717 /* If fewer than 8 active devices, the list must be null terminated */ 718 if (i < ARRAY_SIZE(opregion->acpi->cadl)) 719 opregion->acpi->cadl[i] = 0; 720 } 721 722 static void swsci_setup(struct drm_i915_private *dev_priv) 723 { 724 struct intel_opregion *opregion = &dev_priv->opregion; 725 bool requested_callbacks = false; 726 u32 tmp; 727 728 /* Sub-function code 0 is okay, let's allow them. */ 729 opregion->swsci_gbda_sub_functions = 1; 730 opregion->swsci_sbcb_sub_functions = 1; 731 732 /* We use GBDA to ask for supported GBDA calls. */ 733 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 734 /* make the bits match the sub-function codes */ 735 tmp <<= 1; 736 opregion->swsci_gbda_sub_functions |= tmp; 737 } 738 739 /* 740 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 741 * must not call interfaces that are not specifically requested by the 742 * bios. 743 */ 744 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 745 /* here, the bits already match sub-function codes */ 746 opregion->swsci_sbcb_sub_functions |= tmp; 747 requested_callbacks = true; 748 } 749 750 /* 751 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 752 * the callback is _requested_. But we still can't call interfaces that 753 * are not requested. 754 */ 755 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 756 /* make the bits match the sub-function codes */ 757 u32 low = tmp & 0x7ff; 758 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 759 tmp = (high << 4) | (low << 1) | 1; 760 761 /* best guess what to do with supported wrt requested */ 762 if (requested_callbacks) { 763 u32 req = opregion->swsci_sbcb_sub_functions; 764 if ((req & tmp) != req) 765 drm_dbg(&dev_priv->drm, 766 "SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", 767 req, tmp); 768 /* XXX: for now, trust the requested callbacks */ 769 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 770 } else { 771 opregion->swsci_sbcb_sub_functions |= tmp; 772 } 773 } 774 775 drm_dbg(&dev_priv->drm, 776 "SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 777 opregion->swsci_gbda_sub_functions, 778 opregion->swsci_sbcb_sub_functions); 779 } 780 781 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) 782 { 783 DRM_DEBUG_KMS("Falling back to manually reading VBT from " 784 "VBIOS ROM for %s\n", id->ident); 785 return 1; 786 } 787 788 static const struct dmi_system_id intel_no_opregion_vbt[] = { 789 { 790 .callback = intel_no_opregion_vbt_callback, 791 .ident = "ThinkCentre A57", 792 .matches = { 793 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 794 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), 795 }, 796 }, 797 { } 798 }; 799 800 static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv) 801 { 802 struct intel_opregion *opregion = &dev_priv->opregion; 803 const struct firmware *fw = NULL; 804 const char *name = i915_modparams.vbt_firmware; 805 int ret; 806 807 if (!name || !*name) 808 return -ENOENT; 809 810 ret = request_firmware(&fw, name, &dev_priv->drm.pdev->dev); 811 if (ret) { 812 drm_err(&dev_priv->drm, 813 "Requesting VBT firmware \"%s\" failed (%d)\n", 814 name, ret); 815 return ret; 816 } 817 818 if (intel_bios_is_valid_vbt(fw->data, fw->size)) { 819 opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL); 820 if (opregion->vbt_firmware) { 821 drm_dbg_kms(&dev_priv->drm, 822 "Found valid VBT firmware \"%s\"\n", name); 823 opregion->vbt = opregion->vbt_firmware; 824 opregion->vbt_size = fw->size; 825 ret = 0; 826 } else { 827 ret = -ENOMEM; 828 } 829 } else { 830 drm_dbg_kms(&dev_priv->drm, "Invalid VBT firmware \"%s\"\n", 831 name); 832 ret = -EINVAL; 833 } 834 835 release_firmware(fw); 836 837 return ret; 838 } 839 840 int intel_opregion_setup(struct drm_i915_private *dev_priv) 841 { 842 struct intel_opregion *opregion = &dev_priv->opregion; 843 struct pci_dev *pdev = dev_priv->drm.pdev; 844 u32 asls, mboxes; 845 char buf[sizeof(OPREGION_SIGNATURE)]; 846 int err = 0; 847 void *base; 848 const void *vbt; 849 u32 vbt_size; 850 851 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100); 852 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100); 853 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100); 854 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100); 855 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400); 856 857 pci_read_config_dword(pdev, ASLS, &asls); 858 drm_dbg(&dev_priv->drm, "graphic opregion physical addr: 0x%x\n", 859 asls); 860 if (asls == 0) { 861 drm_dbg(&dev_priv->drm, "ACPI OpRegion not supported!\n"); 862 return -ENOTSUPP; 863 } 864 865 INIT_WORK(&opregion->asle_work, asle_work); 866 867 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB); 868 if (!base) 869 return -ENOMEM; 870 871 memcpy(buf, base, sizeof(buf)); 872 873 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 874 drm_dbg(&dev_priv->drm, "opregion signature mismatch\n"); 875 err = -EINVAL; 876 goto err_out; 877 } 878 opregion->header = base; 879 opregion->lid_state = base + ACPI_CLID; 880 881 drm_dbg(&dev_priv->drm, "ACPI OpRegion version %u.%u.%u\n", 882 opregion->header->over.major, 883 opregion->header->over.minor, 884 opregion->header->over.revision); 885 886 mboxes = opregion->header->mboxes; 887 if (mboxes & MBOX_ACPI) { 888 drm_dbg(&dev_priv->drm, "Public ACPI methods supported\n"); 889 opregion->acpi = base + OPREGION_ACPI_OFFSET; 890 /* 891 * Indicate we handle monitor hotplug events ourselves so we do 892 * not need ACPI notifications for them. Disabling these avoids 893 * triggering the AML code doing the notifation, which may be 894 * broken as Windows also seems to disable these. 895 */ 896 opregion->acpi->chpd = 1; 897 } 898 899 if (mboxes & MBOX_SWSCI) { 900 drm_dbg(&dev_priv->drm, "SWSCI supported\n"); 901 opregion->swsci = base + OPREGION_SWSCI_OFFSET; 902 swsci_setup(dev_priv); 903 } 904 905 if (mboxes & MBOX_ASLE) { 906 drm_dbg(&dev_priv->drm, "ASLE supported\n"); 907 opregion->asle = base + OPREGION_ASLE_OFFSET; 908 909 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 910 } 911 912 if (mboxes & MBOX_ASLE_EXT) 913 drm_dbg(&dev_priv->drm, "ASLE extension supported\n"); 914 915 if (intel_load_vbt_firmware(dev_priv) == 0) 916 goto out; 917 918 if (dmi_check_system(intel_no_opregion_vbt)) 919 goto out; 920 921 if (opregion->header->over.major >= 2 && opregion->asle && 922 opregion->asle->rvda && opregion->asle->rvds) { 923 resource_size_t rvda = opregion->asle->rvda; 924 925 /* 926 * opregion 2.0: rvda is the physical VBT address. 927 * 928 * opregion 2.1+: rvda is unsigned, relative offset from 929 * opregion base, and should never point within opregion. 930 */ 931 if (opregion->header->over.major > 2 || 932 opregion->header->over.minor >= 1) { 933 drm_WARN_ON(&dev_priv->drm, rvda < OPREGION_SIZE); 934 935 rvda += asls; 936 } 937 938 opregion->rvda = memremap(rvda, opregion->asle->rvds, 939 MEMREMAP_WB); 940 941 vbt = opregion->rvda; 942 vbt_size = opregion->asle->rvds; 943 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 944 drm_dbg_kms(&dev_priv->drm, 945 "Found valid VBT in ACPI OpRegion (RVDA)\n"); 946 opregion->vbt = vbt; 947 opregion->vbt_size = vbt_size; 948 goto out; 949 } else { 950 drm_dbg_kms(&dev_priv->drm, 951 "Invalid VBT in ACPI OpRegion (RVDA)\n"); 952 memunmap(opregion->rvda); 953 opregion->rvda = NULL; 954 } 955 } 956 957 vbt = base + OPREGION_VBT_OFFSET; 958 /* 959 * The VBT specification says that if the ASLE ext mailbox is not used 960 * its area is reserved, but on some CHT boards the VBT extends into the 961 * ASLE ext area. Allow this even though it is against the spec, so we 962 * do not end up rejecting the VBT on those boards (and end up not 963 * finding the LCD panel because of this). 964 */ 965 vbt_size = (mboxes & MBOX_ASLE_EXT) ? 966 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE; 967 vbt_size -= OPREGION_VBT_OFFSET; 968 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 969 drm_dbg_kms(&dev_priv->drm, 970 "Found valid VBT in ACPI OpRegion (Mailbox #4)\n"); 971 opregion->vbt = vbt; 972 opregion->vbt_size = vbt_size; 973 } else { 974 drm_dbg_kms(&dev_priv->drm, 975 "Invalid VBT in ACPI OpRegion (Mailbox #4)\n"); 976 } 977 978 out: 979 return 0; 980 981 err_out: 982 memunmap(base); 983 return err; 984 } 985 986 static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id) 987 { 988 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident); 989 return 1; 990 } 991 992 static const struct dmi_system_id intel_use_opregion_panel_type[] = { 993 { 994 .callback = intel_use_opregion_panel_type_callback, 995 .ident = "Conrac GmbH IX45GM2", 996 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"), 997 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"), 998 }, 999 }, 1000 { } 1001 }; 1002 1003 int 1004 intel_opregion_get_panel_type(struct drm_i915_private *dev_priv) 1005 { 1006 u32 panel_details; 1007 int ret; 1008 1009 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details); 1010 if (ret) { 1011 drm_dbg_kms(&dev_priv->drm, 1012 "Failed to get panel details from OpRegion (%d)\n", 1013 ret); 1014 return ret; 1015 } 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 void intel_opregion_register(struct drm_i915_private *i915) 1045 { 1046 struct intel_opregion *opregion = &i915->opregion; 1047 1048 if (!opregion->header) 1049 return; 1050 1051 if (opregion->acpi) { 1052 opregion->acpi_notifier.notifier_call = 1053 intel_opregion_video_event; 1054 register_acpi_notifier(&opregion->acpi_notifier); 1055 } 1056 1057 intel_opregion_resume(i915); 1058 } 1059 1060 void intel_opregion_resume(struct drm_i915_private *i915) 1061 { 1062 struct intel_opregion *opregion = &i915->opregion; 1063 1064 if (!opregion->header) 1065 return; 1066 1067 if (opregion->acpi) { 1068 intel_didl_outputs(i915); 1069 intel_setup_cadls(i915); 1070 1071 /* 1072 * Notify BIOS we are ready to handle ACPI video ext notifs. 1073 * Right now, all the events are handled by the ACPI video 1074 * module. We don't actually need to do anything with them. 1075 */ 1076 opregion->acpi->csts = 0; 1077 opregion->acpi->drdy = 1; 1078 } 1079 1080 if (opregion->asle) { 1081 opregion->asle->tche = ASLE_TCHE_BLC_EN; 1082 opregion->asle->ardy = ASLE_ARDY_READY; 1083 } 1084 1085 intel_opregion_notify_adapter(i915, PCI_D0); 1086 } 1087 1088 void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state) 1089 { 1090 struct intel_opregion *opregion = &i915->opregion; 1091 1092 if (!opregion->header) 1093 return; 1094 1095 intel_opregion_notify_adapter(i915, state); 1096 1097 if (opregion->asle) 1098 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 1099 1100 cancel_work_sync(&i915->opregion.asle_work); 1101 1102 if (opregion->acpi) 1103 opregion->acpi->drdy = 0; 1104 } 1105 1106 void intel_opregion_unregister(struct drm_i915_private *i915) 1107 { 1108 struct intel_opregion *opregion = &i915->opregion; 1109 1110 intel_opregion_suspend(i915, PCI_D1); 1111 1112 if (!opregion->header) 1113 return; 1114 1115 if (opregion->acpi_notifier.notifier_call) { 1116 unregister_acpi_notifier(&opregion->acpi_notifier); 1117 opregion->acpi_notifier.notifier_call = NULL; 1118 } 1119 1120 /* just clear all opregion memory pointers now */ 1121 memunmap(opregion->header); 1122 if (opregion->rvda) { 1123 memunmap(opregion->rvda); 1124 opregion->rvda = NULL; 1125 } 1126 if (opregion->vbt_firmware) { 1127 kfree(opregion->vbt_firmware); 1128 opregion->vbt_firmware = NULL; 1129 } 1130 opregion->header = NULL; 1131 opregion->acpi = NULL; 1132 opregion->swsci = NULL; 1133 opregion->asle = NULL; 1134 opregion->vbt = NULL; 1135 opregion->lid_state = NULL; 1136 } 1137