1 /* 2 * Copyright 2008 Intel Corporation <hong.liu@intel.com> 3 * Copyright 2008 Red Hat <mjg@redhat.com> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sub license, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 24 * SOFTWARE. 25 * 26 */ 27 28 #include <drm/drmP.h> 29 #include <drm/i915_drm.h> 30 #include "i915_drv.h" 31 #include "intel_drv.h" 32 33 #include <contrib/dev/acpica/source/include/acpi.h> 34 #include <contrib/dev/acpica/source/include/accommon.h> 35 #include <dev/acpica/acpivar.h> 36 37 #define PCI_ASLE 0xe4 38 #define PCI_ASLS 0xfc 39 #define PCI_SWSCI 0xe8 40 #define PCI_SWSCI_SCISEL (1 << 15) 41 #define PCI_SWSCI_GSSCIE (1 << 0) 42 43 #define OPREGION_HEADER_OFFSET 0 44 #define OPREGION_ACPI_OFFSET 0x100 45 #define ACPI_CLID 0x01ac /* current lid state indicator */ 46 #define ACPI_CDCK 0x01b0 /* current docking state indicator */ 47 #define OPREGION_SWSCI_OFFSET 0x200 48 #define OPREGION_ASLE_OFFSET 0x300 49 #define OPREGION_VBT_OFFSET 0x400 50 51 #define OPREGION_SIGNATURE "IntelGraphicsMem" 52 #define MBOX_ACPI (1<<0) 53 #define MBOX_SWSCI (1<<1) 54 #define MBOX_ASLE (1<<2) 55 #define MBOX_ASLE_EXT (1<<4) 56 57 struct opregion_header { 58 u8 signature[16]; 59 u32 size; 60 u32 opregion_ver; 61 u8 bios_ver[32]; 62 u8 vbios_ver[16]; 63 u8 driver_ver[16]; 64 u32 mboxes; 65 u32 driver_model; 66 u32 pcon; 67 u8 dver[32]; 68 u8 rsvd[124]; 69 } __packed; 70 71 /* OpRegion mailbox #1: public ACPI methods */ 72 struct opregion_acpi { 73 u32 drdy; /* driver readiness */ 74 u32 csts; /* notification status */ 75 u32 cevt; /* current event */ 76 u8 rsvd1[20]; 77 u32 didl[8]; /* supported display devices ID list */ 78 u32 cpdl[8]; /* currently presented display list */ 79 u32 cadl[8]; /* currently active display list */ 80 u32 nadl[8]; /* next active devices list */ 81 u32 aslp; /* ASL sleep time-out */ 82 u32 tidx; /* toggle table index */ 83 u32 chpd; /* current hotplug enable indicator */ 84 u32 clid; /* current lid state*/ 85 u32 cdck; /* current docking state */ 86 u32 sxsw; /* Sx state resume */ 87 u32 evts; /* ASL supported events */ 88 u32 cnot; /* current OS notification */ 89 u32 nrdy; /* driver status */ 90 u32 did2[7]; /* extended supported display devices ID list */ 91 u32 cpd2[7]; /* extended attached display devices list */ 92 u8 rsvd2[4]; 93 } __packed; 94 95 /* OpRegion mailbox #2: SWSCI */ 96 struct opregion_swsci { 97 u32 scic; /* SWSCI command|status|data */ 98 u32 parm; /* command parameters */ 99 u32 dslp; /* driver sleep time-out */ 100 u8 rsvd[244]; 101 } __packed; 102 103 /* OpRegion mailbox #3: ASLE */ 104 struct opregion_asle { 105 u32 ardy; /* driver readiness */ 106 u32 aslc; /* ASLE interrupt command */ 107 u32 tche; /* technology enabled indicator */ 108 u32 alsi; /* current ALS illuminance reading */ 109 u32 bclp; /* backlight brightness to set */ 110 u32 pfit; /* panel fitting state */ 111 u32 cblv; /* current brightness level */ 112 u16 bclm[20]; /* backlight level duty cycle mapping table */ 113 u32 cpfm; /* current panel fitting mode */ 114 u32 epfm; /* enabled panel fitting modes */ 115 u8 plut[74]; /* panel LUT and identifier */ 116 u32 pfmb; /* PWM freq and min brightness */ 117 u32 cddv; /* color correction default values */ 118 u32 pcft; /* power conservation features */ 119 u32 srot; /* supported rotation angles */ 120 u32 iuer; /* IUER events */ 121 u64 fdss; 122 u32 fdsp; 123 u32 stat; 124 u8 rsvd[70]; 125 } __packed; 126 127 /* Driver readiness indicator */ 128 #define ASLE_ARDY_READY (1 << 0) 129 #define ASLE_ARDY_NOT_READY (0 << 0) 130 131 /* ASLE Interrupt Command (ASLC) bits */ 132 #define ASLC_SET_ALS_ILLUM (1 << 0) 133 #define ASLC_SET_BACKLIGHT (1 << 1) 134 #define ASLC_SET_PFIT (1 << 2) 135 #define ASLC_SET_PWM_FREQ (1 << 3) 136 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4) 137 #define ASLC_BUTTON_ARRAY (1 << 5) 138 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6) 139 #define ASLC_DOCKING_INDICATOR (1 << 7) 140 #define ASLC_ISCT_STATE_CHANGE (1 << 8) 141 #define ASLC_REQ_MSK 0x1ff 142 /* response bits */ 143 #define ASLC_ALS_ILLUM_FAILED (1 << 10) 144 #define ASLC_BACKLIGHT_FAILED (1 << 12) 145 #define ASLC_PFIT_FAILED (1 << 14) 146 #define ASLC_PWM_FREQ_FAILED (1 << 16) 147 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18) 148 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20) 149 #define ASLC_CONVERTIBLE_FAILED (1 << 22) 150 #define ASLC_DOCKING_FAILED (1 << 24) 151 #define ASLC_ISCT_STATE_FAILED (1 << 26) 152 153 /* Technology enabled indicator */ 154 #define ASLE_TCHE_ALS_EN (1 << 0) 155 #define ASLE_TCHE_BLC_EN (1 << 1) 156 #define ASLE_TCHE_PFIT_EN (1 << 2) 157 #define ASLE_TCHE_PFMB_EN (1 << 3) 158 159 /* ASLE backlight brightness to set */ 160 #define ASLE_BCLP_VALID (1<<31) 161 #define ASLE_BCLP_MSK (~(1<<31)) 162 163 /* ASLE panel fitting request */ 164 #define ASLE_PFIT_VALID (1<<31) 165 #define ASLE_PFIT_CENTER (1<<0) 166 #define ASLE_PFIT_STRETCH_TEXT (1<<1) 167 #define ASLE_PFIT_STRETCH_GFX (1<<2) 168 169 /* PWM frequency and minimum brightness */ 170 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) 171 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) 172 #define ASLE_PFMB_PWM_MASK (0x7ffffe00) 173 #define ASLE_PFMB_PWM_VALID (1<<31) 174 175 #define ASLE_CBLV_VALID (1<<31) 176 177 /* IUER */ 178 #define ASLE_IUER_DOCKING (1 << 7) 179 #define ASLE_IUER_CONVERTIBLE (1 << 6) 180 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4) 181 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3) 182 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2) 183 #define ASLE_IUER_WINDOWS_BTN (1 << 1) 184 #define ASLE_IUER_POWER_BTN (1 << 0) 185 186 /* Software System Control Interrupt (SWSCI) */ 187 #define SWSCI_SCIC_INDICATOR (1 << 0) 188 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 189 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) 190 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 191 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) 192 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 193 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) 194 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 195 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) 196 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 197 198 #define SWSCI_FUNCTION_CODE(main, sub) \ 199 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ 200 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) 201 202 /* SWSCI: Get BIOS Data (GBDA) */ 203 #define SWSCI_GBDA 4 204 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) 205 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) 206 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) 207 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) 208 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) 209 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) 210 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) 211 212 /* SWSCI: System BIOS Callbacks (SBCB) */ 213 #define SWSCI_SBCB 6 214 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) 215 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) 216 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) 217 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) 218 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) 219 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) 220 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) 221 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) 222 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) 223 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) 224 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) 225 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) 226 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) 227 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) 228 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) 229 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) 230 231 #define ACPI_OTHER_OUTPUT (0<<8) 232 #define ACPI_VGA_OUTPUT (1<<8) 233 #define ACPI_TV_OUTPUT (2<<8) 234 #define ACPI_DIGITAL_OUTPUT (3<<8) 235 #define ACPI_LVDS_OUTPUT (4<<8) 236 237 #define MAX_DSLP 1500 238 239 #ifdef CONFIG_ACPI 240 static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out) 241 { 242 struct drm_i915_private *dev_priv = dev->dev_private; 243 struct opregion_swsci *swsci = dev_priv->opregion.swsci; 244 u32 main_function, sub_function, scic; 245 u16 pci_swsci; 246 u32 dslp; 247 248 if (!swsci) 249 return -ENODEV; 250 251 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 252 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 253 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 254 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 255 256 /* Check if we can call the function. See swsci_setup for details. */ 257 if (main_function == SWSCI_SBCB) { 258 if ((dev_priv->opregion.swsci_sbcb_sub_functions & 259 (1 << sub_function)) == 0) 260 return -EINVAL; 261 } else if (main_function == SWSCI_GBDA) { 262 if ((dev_priv->opregion.swsci_gbda_sub_functions & 263 (1 << sub_function)) == 0) 264 return -EINVAL; 265 } 266 267 /* Driver sleep timeout in ms. */ 268 dslp = swsci->dslp; 269 if (!dslp) { 270 /* The spec says 2ms should be the default, but it's too small 271 * for some machines. */ 272 dslp = 50; 273 } else if (dslp > MAX_DSLP) { 274 /* Hey bios, trust must be earned. */ 275 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 276 "using %u ms instead\n", dslp, MAX_DSLP); 277 dslp = MAX_DSLP; 278 } 279 280 /* The spec tells us to do this, but we are the only user... */ 281 scic = swsci->scic; 282 if (scic & SWSCI_SCIC_INDICATOR) { 283 DRM_DEBUG_DRIVER("SWSCI request already in progress\n"); 284 return -EBUSY; 285 } 286 287 scic = function | SWSCI_SCIC_INDICATOR; 288 289 swsci->parm = parm; 290 swsci->scic = scic; 291 292 /* Ensure SCI event is selected and event trigger is cleared. */ 293 pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci); 294 if (!(pci_swsci & PCI_SWSCI_SCISEL) || (pci_swsci & PCI_SWSCI_GSSCIE)) { 295 pci_swsci |= PCI_SWSCI_SCISEL; 296 pci_swsci &= ~PCI_SWSCI_GSSCIE; 297 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); 298 } 299 300 /* Use event trigger to tell bios to check the mail. */ 301 pci_swsci |= PCI_SWSCI_GSSCIE; 302 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); 303 304 /* Poll for the result. */ 305 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0) 306 if (wait_for(C, dslp)) { 307 DRM_DEBUG_DRIVER("SWSCI request timed out\n"); 308 return -ETIMEDOUT; 309 } 310 311 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 312 SWSCI_SCIC_EXIT_STATUS_SHIFT; 313 314 /* Note: scic == 0 is an error! */ 315 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 316 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic); 317 return -EIO; 318 } 319 320 if (parm_out) 321 *parm_out = swsci->parm; 322 323 return 0; 324 325 #undef C 326 } 327 328 #define DISPLAY_TYPE_CRT 0 329 #define DISPLAY_TYPE_TV 1 330 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 331 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 332 333 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 334 bool enable) 335 { 336 struct drm_device *dev = intel_encoder->base.dev; 337 u32 parm = 0; 338 u32 type = 0; 339 u32 port; 340 341 /* don't care about old stuff for now */ 342 if (!HAS_DDI(dev)) 343 return 0; 344 345 if (intel_encoder->type == INTEL_OUTPUT_DSI) 346 port = 0; 347 else 348 port = intel_ddi_get_encoder_port(intel_encoder); 349 350 if (port == PORT_E) { 351 port = 0; 352 } else { 353 parm |= 1 << port; 354 port++; 355 } 356 357 if (!enable) 358 parm |= 4 << 8; 359 360 switch (intel_encoder->type) { 361 case INTEL_OUTPUT_ANALOG: 362 type = DISPLAY_TYPE_CRT; 363 break; 364 case INTEL_OUTPUT_UNKNOWN: 365 case INTEL_OUTPUT_DISPLAYPORT: 366 case INTEL_OUTPUT_HDMI: 367 case INTEL_OUTPUT_DP_MST: 368 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 369 break; 370 case INTEL_OUTPUT_EDP: 371 case INTEL_OUTPUT_DSI: 372 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 373 break; 374 default: 375 WARN_ONCE(1, "unsupported intel_encoder type %d\n", 376 intel_encoder->type); 377 return -EINVAL; 378 } 379 380 parm |= type << (16 + port * 3); 381 382 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 383 } 384 385 static const struct { 386 pci_power_t pci_power_state; 387 u32 parm; 388 } power_state_map[] = { 389 { PCI_D0, 0x00 }, 390 { PCI_D1, 0x01 }, 391 { PCI_D2, 0x02 }, 392 { PCI_D3hot, 0x04 }, 393 { PCI_D3cold, 0x04 }, 394 }; 395 396 int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) 397 { 398 int i; 399 400 if (!HAS_DDI(dev)) 401 return 0; 402 403 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 404 if (state == power_state_map[i].pci_power_state) 405 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE, 406 power_state_map[i].parm, NULL); 407 } 408 409 return -EINVAL; 410 } 411 412 static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) 413 { 414 struct drm_i915_private *dev_priv = dev->dev_private; 415 struct intel_connector *intel_connector; 416 struct opregion_asle *asle = dev_priv->opregion.asle; 417 418 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); 419 420 #ifndef __DragonFly__ 421 if (acpi_video_get_backlight_type() == acpi_backlight_native) { 422 DRM_DEBUG_KMS("opregion backlight request ignored\n"); 423 return 0; 424 } 425 #endif 426 427 if (!(bclp & ASLE_BCLP_VALID)) 428 return ASLC_BACKLIGHT_FAILED; 429 430 bclp &= ASLE_BCLP_MSK; 431 if (bclp > 255) 432 return ASLC_BACKLIGHT_FAILED; 433 434 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 435 436 /* 437 * Update backlight on all connectors that support backlight (usually 438 * only one). 439 */ 440 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); 441 list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head) 442 intel_panel_set_backlight_acpi(intel_connector, bclp, 255); 443 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID; 444 445 drm_modeset_unlock(&dev->mode_config.connection_mutex); 446 447 448 return 0; 449 } 450 451 static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) 452 { 453 /* alsi is the current ALS reading in lux. 0 indicates below sensor 454 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 455 DRM_DEBUG_DRIVER("Illum is not supported\n"); 456 return ASLC_ALS_ILLUM_FAILED; 457 } 458 459 static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) 460 { 461 DRM_DEBUG_DRIVER("PWM freq is not supported\n"); 462 return ASLC_PWM_FREQ_FAILED; 463 } 464 465 static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) 466 { 467 /* Panel fitting is currently controlled by the X code, so this is a 468 noop until modesetting support works fully */ 469 DRM_DEBUG_DRIVER("Pfit is not supported\n"); 470 return ASLC_PFIT_FAILED; 471 } 472 473 static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot) 474 { 475 DRM_DEBUG_DRIVER("SROT is not supported\n"); 476 return ASLC_ROTATION_ANGLES_FAILED; 477 } 478 479 static u32 asle_set_button_array(struct drm_device *dev, u32 iuer) 480 { 481 if (!iuer) 482 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n"); 483 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 484 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n"); 485 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 486 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n"); 487 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 488 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n"); 489 if (iuer & ASLE_IUER_WINDOWS_BTN) 490 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n"); 491 if (iuer & ASLE_IUER_POWER_BTN) 492 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n"); 493 494 return ASLC_BUTTON_ARRAY_FAILED; 495 } 496 497 static u32 asle_set_convertible(struct drm_device *dev, u32 iuer) 498 { 499 if (iuer & ASLE_IUER_CONVERTIBLE) 500 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n"); 501 else 502 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n"); 503 504 return ASLC_CONVERTIBLE_FAILED; 505 } 506 507 static u32 asle_set_docking(struct drm_device *dev, u32 iuer) 508 { 509 if (iuer & ASLE_IUER_DOCKING) 510 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n"); 511 else 512 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n"); 513 514 return ASLC_DOCKING_FAILED; 515 } 516 517 static u32 asle_isct_state(struct drm_device *dev) 518 { 519 DRM_DEBUG_DRIVER("ISCT is not supported\n"); 520 return ASLC_ISCT_STATE_FAILED; 521 } 522 523 static void asle_work(struct work_struct *work) 524 { 525 struct intel_opregion *opregion = 526 container_of(work, struct intel_opregion, asle_work); 527 struct drm_i915_private *dev_priv = 528 container_of(opregion, struct drm_i915_private, opregion); 529 struct drm_device *dev = dev_priv->dev; 530 struct opregion_asle *asle = dev_priv->opregion.asle; 531 u32 aslc_stat = 0; 532 u32 aslc_req; 533 534 if (!asle) 535 return; 536 537 aslc_req = asle->aslc; 538 539 if (!(aslc_req & ASLC_REQ_MSK)) { 540 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n", 541 aslc_req); 542 return; 543 } 544 545 if (aslc_req & ASLC_SET_ALS_ILLUM) 546 aslc_stat |= asle_set_als_illum(dev, asle->alsi); 547 548 if (aslc_req & ASLC_SET_BACKLIGHT) 549 aslc_stat |= asle_set_backlight(dev, asle->bclp); 550 551 if (aslc_req & ASLC_SET_PFIT) 552 aslc_stat |= asle_set_pfit(dev, asle->pfit); 553 554 if (aslc_req & ASLC_SET_PWM_FREQ) 555 aslc_stat |= asle_set_pwm_freq(dev, asle->pfmb); 556 557 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 558 aslc_stat |= asle_set_supported_rotation_angles(dev, 559 asle->srot); 560 561 if (aslc_req & ASLC_BUTTON_ARRAY) 562 aslc_stat |= asle_set_button_array(dev, asle->iuer); 563 564 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 565 aslc_stat |= asle_set_convertible(dev, asle->iuer); 566 567 if (aslc_req & ASLC_DOCKING_INDICATOR) 568 aslc_stat |= asle_set_docking(dev, asle->iuer); 569 570 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 571 aslc_stat |= asle_isct_state(dev); 572 573 asle->aslc = aslc_stat; 574 } 575 576 void intel_opregion_asle_intr(struct drm_device *dev) 577 { 578 struct drm_i915_private *dev_priv = dev->dev_private; 579 580 if (dev_priv->opregion.asle) 581 schedule_work(&dev_priv->opregion.asle_work); 582 } 583 584 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 585 #define ACPI_EV_LID (1<<1) 586 #define ACPI_EV_DOCK (1<<2) 587 588 static struct intel_opregion *system_opregion; 589 590 #if 0 591 static int intel_opregion_video_event(struct notifier_block *nb, 592 unsigned long val, void *data) 593 { 594 /* The only video events relevant to opregion are 0x80. These indicate 595 either a docking event, lid switch or display switch request. In 596 Linux, these are handled by the dock, button and video drivers. 597 */ 598 599 struct acpi_bus_event *event = data; 600 struct opregion_acpi *acpi; 601 int ret = NOTIFY_OK; 602 603 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 604 return NOTIFY_DONE; 605 606 if (!system_opregion) 607 return NOTIFY_DONE; 608 609 acpi = system_opregion->acpi; 610 611 if (event->type == 0x80 && ((acpi->cevt & 1) == 0)) 612 ret = NOTIFY_BAD; 613 614 acpi->csts = 0; 615 616 return ret; 617 } 618 619 static struct notifier_block intel_opregion_notifier = { 620 .notifier_call = intel_opregion_video_event, 621 }; 622 #endif 623 624 static int acpi_is_video_device(ACPI_HANDLE devh) { 625 ACPI_HANDLE h; 626 if (ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 627 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h))) { 628 return 0; 629 } 630 return 1; 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 u32 get_did(struct intel_opregion *opregion, int i) 640 { 641 u32 did; 642 643 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 644 did = opregion->acpi->didl[i]; 645 } else { 646 i -= ARRAY_SIZE(opregion->acpi->didl); 647 648 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 649 return 0; 650 651 did = opregion->acpi->did2[i]; 652 } 653 654 return did; 655 } 656 657 static void set_did(struct intel_opregion *opregion, int i, u32 val) 658 { 659 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 660 opregion->acpi->didl[i] = val; 661 } else { 662 i -= ARRAY_SIZE(opregion->acpi->didl); 663 664 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 665 return; 666 667 opregion->acpi->did2[i] = val; 668 } 669 } 670 671 static void intel_didl_outputs(struct drm_device *dev) 672 { 673 struct drm_i915_private *dev_priv = dev->dev_private; 674 struct intel_opregion *opregion = &dev_priv->opregion; 675 struct drm_connector *connector; 676 ACPI_HANDLE handle, acpi_cdev, acpi_video_bus; 677 u32 device_id; 678 ACPI_STATUS status; 679 u32 temp, max_outputs; 680 int i = 0; 681 682 handle = acpi_get_handle(dev->dev); 683 if (!handle) 684 return; 685 686 if (acpi_is_video_device(handle)) 687 acpi_video_bus = handle; 688 else { 689 acpi_cdev = NULL; 690 acpi_video_bus = NULL; 691 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, handle, acpi_cdev, 692 &acpi_cdev) != AE_NOT_FOUND) { 693 if (acpi_is_video_device(acpi_cdev)) { 694 acpi_video_bus = acpi_cdev; 695 break; 696 } 697 } 698 } 699 700 if (!acpi_video_bus) { 701 DRM_ERROR("No ACPI video bus found\n"); 702 return; 703 } 704 705 /* 706 * In theory, did2, the extended didl, gets added at opregion version 707 * 3.0. In practice, however, we're supposed to set it for earlier 708 * versions as well, since a BIOS that doesn't understand did2 should 709 * not look at it anyway. Use a variable so we can tweak this if a need 710 * arises later. 711 */ 712 max_outputs = ARRAY_SIZE(opregion->acpi->didl) + 713 ARRAY_SIZE(opregion->acpi->did2); 714 715 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpi_video_bus, acpi_cdev, 716 &acpi_cdev) != AE_NOT_FOUND) { 717 if (i >= max_outputs) { 718 DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n", 719 max_outputs); 720 return; 721 } 722 status = acpi_GetInteger(acpi_cdev, "_ADR", &device_id); 723 if (ACPI_SUCCESS(status)) { 724 if (!device_id) 725 goto blind_set; 726 set_did(opregion, i++, (u32)(device_id & 0x0f0f)); 727 } 728 } 729 730 end: 731 DRM_DEBUG_KMS("%d outputs detected\n", i); 732 733 /* If fewer than max outputs, the list must be null terminated */ 734 if (i < max_outputs) 735 set_did(opregion, i, 0); 736 return; 737 738 blind_set: 739 i = 0; 740 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 741 int output_type = ACPI_OTHER_OUTPUT; 742 if (i >= max_outputs) { 743 DRM_DEBUG_KMS("More than %u outputs in connector list\n", 744 max_outputs); 745 return; 746 } 747 switch (connector->connector_type) { 748 case DRM_MODE_CONNECTOR_VGA: 749 case DRM_MODE_CONNECTOR_DVIA: 750 output_type = ACPI_VGA_OUTPUT; 751 break; 752 case DRM_MODE_CONNECTOR_Composite: 753 case DRM_MODE_CONNECTOR_SVIDEO: 754 case DRM_MODE_CONNECTOR_Component: 755 case DRM_MODE_CONNECTOR_9PinDIN: 756 output_type = ACPI_TV_OUTPUT; 757 break; 758 case DRM_MODE_CONNECTOR_DVII: 759 case DRM_MODE_CONNECTOR_DVID: 760 case DRM_MODE_CONNECTOR_DisplayPort: 761 case DRM_MODE_CONNECTOR_HDMIA: 762 case DRM_MODE_CONNECTOR_HDMIB: 763 output_type = ACPI_DIGITAL_OUTPUT; 764 break; 765 case DRM_MODE_CONNECTOR_LVDS: 766 output_type = ACPI_LVDS_OUTPUT; 767 break; 768 } 769 temp = get_did(opregion, i); 770 set_did(opregion, i, temp | (1 << 31) | output_type | i); 771 i++; 772 } 773 goto end; 774 } 775 776 static void intel_setup_cadls(struct drm_device *dev) 777 { 778 struct drm_i915_private *dev_priv = dev->dev_private; 779 struct intel_opregion *opregion = &dev_priv->opregion; 780 int i = 0; 781 u32 disp_id; 782 783 /* Initialize the CADL field by duplicating the DIDL values. 784 * Technically, this is not always correct as display outputs may exist, 785 * but not active. This initialization is necessary for some Clevo 786 * laptops that check this field before processing the brightness and 787 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if 788 * there are less than eight devices. */ 789 do { 790 disp_id = get_did(opregion, i); 791 opregion->acpi->cadl[i] = disp_id; 792 } while (++i < 8 && disp_id != 0); 793 } 794 795 void intel_opregion_init(struct drm_device *dev) 796 { 797 struct drm_i915_private *dev_priv = dev->dev_private; 798 struct intel_opregion *opregion = &dev_priv->opregion; 799 800 if (!opregion->header) 801 return; 802 803 if (opregion->acpi) { 804 intel_didl_outputs(dev); 805 intel_setup_cadls(dev); 806 807 /* Notify BIOS we are ready to handle ACPI video ext notifs. 808 * Right now, all the events are handled by the ACPI video module. 809 * We don't actually need to do anything with them. */ 810 opregion->acpi->csts = 0; 811 opregion->acpi->drdy = 1; 812 813 system_opregion = opregion; 814 } 815 816 if (opregion->asle) { 817 opregion->asle->tche = ASLE_TCHE_BLC_EN; 818 opregion->asle->ardy = ASLE_ARDY_READY; 819 } 820 } 821 822 void intel_opregion_fini(struct drm_device *dev) 823 { 824 struct drm_i915_private *dev_priv = dev->dev_private; 825 struct intel_opregion *opregion = &dev_priv->opregion; 826 827 if (!opregion->header) 828 return; 829 830 if (opregion->asle) 831 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 832 833 cancel_work_sync(&dev_priv->opregion.asle_work); 834 835 if (opregion->acpi) { 836 opregion->acpi->drdy = 0; 837 838 system_opregion = NULL; 839 } 840 841 /* just clear all opregion memory pointers now */ 842 iounmap(opregion->header); 843 opregion->header = NULL; 844 opregion->acpi = NULL; 845 opregion->swsci = NULL; 846 opregion->asle = NULL; 847 opregion->vbt = NULL; 848 opregion->lid_state = NULL; 849 } 850 851 static void swsci_setup(struct drm_device *dev) 852 { 853 struct drm_i915_private *dev_priv = dev->dev_private; 854 struct intel_opregion *opregion = &dev_priv->opregion; 855 bool requested_callbacks = false; 856 u32 tmp; 857 858 /* Sub-function code 0 is okay, let's allow them. */ 859 opregion->swsci_gbda_sub_functions = 1; 860 opregion->swsci_sbcb_sub_functions = 1; 861 862 /* We use GBDA to ask for supported GBDA calls. */ 863 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 864 /* make the bits match the sub-function codes */ 865 tmp <<= 1; 866 opregion->swsci_gbda_sub_functions |= tmp; 867 } 868 869 /* 870 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 871 * must not call interfaces that are not specifically requested by the 872 * bios. 873 */ 874 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 875 /* here, the bits already match sub-function codes */ 876 opregion->swsci_sbcb_sub_functions |= tmp; 877 requested_callbacks = true; 878 } 879 880 /* 881 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 882 * the callback is _requested_. But we still can't call interfaces that 883 * are not requested. 884 */ 885 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 886 /* make the bits match the sub-function codes */ 887 u32 low = tmp & 0x7ff; 888 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 889 tmp = (high << 4) | (low << 1) | 1; 890 891 /* best guess what to do with supported wrt requested */ 892 if (requested_callbacks) { 893 u32 req = opregion->swsci_sbcb_sub_functions; 894 if ((req & tmp) != req) 895 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp); 896 /* XXX: for now, trust the requested callbacks */ 897 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 898 } else { 899 opregion->swsci_sbcb_sub_functions |= tmp; 900 } 901 } 902 903 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 904 opregion->swsci_gbda_sub_functions, 905 opregion->swsci_sbcb_sub_functions); 906 } 907 #else /* CONFIG_ACPI */ 908 static inline void swsci_setup(struct drm_device *dev) {} 909 #endif /* CONFIG_ACPI */ 910 911 int intel_opregion_setup(struct drm_device *dev) 912 { 913 struct drm_i915_private *dev_priv = dev->dev_private; 914 struct intel_opregion *opregion = &dev_priv->opregion; 915 u32 asls, mboxes; 916 char buf[sizeof(OPREGION_SIGNATURE)]; 917 int err = 0; 918 char *base; 919 920 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100); 921 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100); 922 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100); 923 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100); 924 925 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls); 926 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); 927 if (asls == 0) { 928 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); 929 return -ENOTSUP; 930 } 931 932 #ifdef CONFIG_ACPI 933 INIT_WORK(&opregion->asle_work, asle_work); 934 #endif 935 936 base = (void *)pmap_mapbios(asls, OPREGION_SIZE); 937 if (!base) 938 return -ENOMEM; 939 940 memcpy(buf, base, sizeof(buf)); 941 942 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 943 DRM_DEBUG_DRIVER("opregion signature mismatch\n"); 944 err = -EINVAL; 945 goto err_out; 946 } 947 opregion->header = (struct opregion_header *)base; 948 opregion->vbt = base + OPREGION_VBT_OFFSET; 949 950 opregion->lid_state = (u32 *)(base + ACPI_CLID); 951 952 mboxes = opregion->header->mboxes; 953 if (mboxes & MBOX_ACPI) { 954 DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); 955 opregion->acpi = (struct opregion_acpi *)(base + OPREGION_ACPI_OFFSET); 956 } 957 958 if (mboxes & MBOX_SWSCI) { 959 DRM_DEBUG_DRIVER("SWSCI supported\n"); 960 opregion->swsci = (struct opregion_swsci *)(base + OPREGION_SWSCI_OFFSET); 961 swsci_setup(dev); 962 } 963 if (mboxes & MBOX_ASLE) { 964 DRM_DEBUG_DRIVER("ASLE supported\n"); 965 opregion->asle = (struct opregion_asle *)(base + OPREGION_ASLE_OFFSET); 966 967 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 968 } 969 970 return 0; 971 972 err_out: 973 iounmap(base); 974 return err; 975 } 976