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 __iomem *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 = ioread32(&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 = ioread32(&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 iowrite32(parm, &swsci->parm); 290 iowrite32(scic, &swsci->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 = ioread32(&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 = ioread32(&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 port = intel_ddi_get_encoder_port(intel_encoder); 346 if (port == PORT_E) { 347 port = 0; 348 } else { 349 parm |= 1 << port; 350 port++; 351 } 352 353 if (!enable) 354 parm |= 4 << 8; 355 356 switch (intel_encoder->type) { 357 case INTEL_OUTPUT_ANALOG: 358 type = DISPLAY_TYPE_CRT; 359 break; 360 case INTEL_OUTPUT_UNKNOWN: 361 case INTEL_OUTPUT_DISPLAYPORT: 362 case INTEL_OUTPUT_HDMI: 363 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 364 break; 365 case INTEL_OUTPUT_EDP: 366 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 367 break; 368 default: 369 WARN_ONCE(1, "unsupported intel_encoder type %d\n", 370 intel_encoder->type); 371 return -EINVAL; 372 } 373 374 parm |= type << (16 + port * 3); 375 376 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 377 } 378 379 static const struct { 380 pci_power_t pci_power_state; 381 u32 parm; 382 } power_state_map[] = { 383 { PCI_D0, 0x00 }, 384 { PCI_D1, 0x01 }, 385 { PCI_D2, 0x02 }, 386 { PCI_D3hot, 0x04 }, 387 { PCI_D3cold, 0x04 }, 388 }; 389 390 int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) 391 { 392 int i; 393 394 if (!HAS_DDI(dev)) 395 return 0; 396 397 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 398 if (state == power_state_map[i].pci_power_state) 399 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE, 400 power_state_map[i].parm, NULL); 401 } 402 403 return -EINVAL; 404 } 405 406 static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) 407 { 408 struct drm_i915_private *dev_priv = dev->dev_private; 409 struct intel_connector *intel_connector; 410 struct opregion_asle __iomem *asle = dev_priv->opregion.asle; 411 412 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); 413 414 #ifdef __DragonFly__ 415 if (0) { 416 #else 417 if (acpi_video_get_backlight_type() == acpi_backlight_native) { 418 #endif 419 DRM_DEBUG_KMS("opregion backlight request ignored\n"); 420 return 0; 421 } 422 423 if (!(bclp & ASLE_BCLP_VALID)) 424 return ASLC_BACKLIGHT_FAILED; 425 426 bclp &= ASLE_BCLP_MSK; 427 if (bclp > 255) 428 return ASLC_BACKLIGHT_FAILED; 429 430 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 431 432 /* 433 * Update backlight on all connectors that support backlight (usually 434 * only one). 435 */ 436 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); 437 list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head) 438 intel_panel_set_backlight_acpi(intel_connector, bclp, 255); 439 iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv); 440 441 drm_modeset_unlock(&dev->mode_config.connection_mutex); 442 443 444 return 0; 445 } 446 447 static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) 448 { 449 /* alsi is the current ALS reading in lux. 0 indicates below sensor 450 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 451 DRM_DEBUG_DRIVER("Illum is not supported\n"); 452 return ASLC_ALS_ILLUM_FAILED; 453 } 454 455 static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) 456 { 457 DRM_DEBUG_DRIVER("PWM freq is not supported\n"); 458 return ASLC_PWM_FREQ_FAILED; 459 } 460 461 static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) 462 { 463 /* Panel fitting is currently controlled by the X code, so this is a 464 noop until modesetting support works fully */ 465 DRM_DEBUG_DRIVER("Pfit is not supported\n"); 466 return ASLC_PFIT_FAILED; 467 } 468 469 static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot) 470 { 471 DRM_DEBUG_DRIVER("SROT is not supported\n"); 472 return ASLC_ROTATION_ANGLES_FAILED; 473 } 474 475 static u32 asle_set_button_array(struct drm_device *dev, u32 iuer) 476 { 477 if (!iuer) 478 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n"); 479 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 480 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n"); 481 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 482 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n"); 483 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 484 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n"); 485 if (iuer & ASLE_IUER_WINDOWS_BTN) 486 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n"); 487 if (iuer & ASLE_IUER_POWER_BTN) 488 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n"); 489 490 return ASLC_BUTTON_ARRAY_FAILED; 491 } 492 493 static u32 asle_set_convertible(struct drm_device *dev, u32 iuer) 494 { 495 if (iuer & ASLE_IUER_CONVERTIBLE) 496 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n"); 497 else 498 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n"); 499 500 return ASLC_CONVERTIBLE_FAILED; 501 } 502 503 static u32 asle_set_docking(struct drm_device *dev, u32 iuer) 504 { 505 if (iuer & ASLE_IUER_DOCKING) 506 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n"); 507 else 508 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n"); 509 510 return ASLC_DOCKING_FAILED; 511 } 512 513 static u32 asle_isct_state(struct drm_device *dev) 514 { 515 DRM_DEBUG_DRIVER("ISCT is not supported\n"); 516 return ASLC_ISCT_STATE_FAILED; 517 } 518 519 static void asle_work(struct work_struct *work) 520 { 521 struct intel_opregion *opregion = 522 container_of(work, struct intel_opregion, asle_work); 523 struct drm_i915_private *dev_priv = 524 container_of(opregion, struct drm_i915_private, opregion); 525 struct drm_device *dev = dev_priv->dev; 526 struct opregion_asle __iomem *asle = dev_priv->opregion.asle; 527 u32 aslc_stat = 0; 528 u32 aslc_req; 529 530 if (!asle) 531 return; 532 533 aslc_req = ioread32(&asle->aslc); 534 535 if (!(aslc_req & ASLC_REQ_MSK)) { 536 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n", 537 aslc_req); 538 return; 539 } 540 541 if (aslc_req & ASLC_SET_ALS_ILLUM) 542 aslc_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi)); 543 544 if (aslc_req & ASLC_SET_BACKLIGHT) 545 aslc_stat |= asle_set_backlight(dev, ioread32(&asle->bclp)); 546 547 if (aslc_req & ASLC_SET_PFIT) 548 aslc_stat |= asle_set_pfit(dev, ioread32(&asle->pfit)); 549 550 if (aslc_req & ASLC_SET_PWM_FREQ) 551 aslc_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb)); 552 553 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 554 aslc_stat |= asle_set_supported_rotation_angles(dev, 555 ioread32(&asle->srot)); 556 557 if (aslc_req & ASLC_BUTTON_ARRAY) 558 aslc_stat |= asle_set_button_array(dev, ioread32(&asle->iuer)); 559 560 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 561 aslc_stat |= asle_set_convertible(dev, ioread32(&asle->iuer)); 562 563 if (aslc_req & ASLC_DOCKING_INDICATOR) 564 aslc_stat |= asle_set_docking(dev, ioread32(&asle->iuer)); 565 566 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 567 aslc_stat |= asle_isct_state(dev); 568 569 iowrite32(aslc_stat, &asle->aslc); 570 } 571 572 void intel_opregion_asle_intr(struct drm_device *dev) 573 { 574 struct drm_i915_private *dev_priv = dev->dev_private; 575 576 if (dev_priv->opregion.asle) 577 schedule_work(&dev_priv->opregion.asle_work); 578 } 579 580 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 581 #define ACPI_EV_LID (1<<1) 582 #define ACPI_EV_DOCK (1<<2) 583 584 static struct intel_opregion *system_opregion; 585 586 #if 0 587 static int intel_opregion_video_event(struct notifier_block *nb, 588 unsigned long val, void *data) 589 { 590 /* The only video events relevant to opregion are 0x80. These indicate 591 either a docking event, lid switch or display switch request. In 592 Linux, these are handled by the dock, button and video drivers. 593 */ 594 595 struct opregion_acpi __iomem *acpi; 596 struct acpi_bus_event *event = data; 597 int ret = NOTIFY_OK; 598 599 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 600 return NOTIFY_DONE; 601 602 if (!system_opregion) 603 return NOTIFY_DONE; 604 605 acpi = system_opregion->acpi; 606 607 if (event->type == 0x80 && 608 (ioread32(&acpi->cevt) & 1) == 0) 609 ret = NOTIFY_BAD; 610 611 iowrite32(0, &acpi->csts); 612 613 return ret; 614 } 615 616 static struct notifier_block intel_opregion_notifier = { 617 .notifier_call = intel_opregion_video_event, 618 }; 619 #endif 620 621 static int acpi_is_video_device(ACPI_HANDLE devh) { 622 ACPI_HANDLE h; 623 if (ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 624 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h))) { 625 return 0; 626 } 627 return 1; 628 } 629 630 /* 631 * Initialise the DIDL field in opregion. This passes a list of devices to 632 * the firmware. Values are defined by section B.4.2 of the ACPI specification 633 * (version 3) 634 */ 635 636 static u32 get_did(struct intel_opregion *opregion, int i) 637 { 638 u32 did; 639 640 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 641 did = ioread32(&opregion->acpi->didl[i]); 642 } else { 643 i -= ARRAY_SIZE(opregion->acpi->didl); 644 645 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 646 return 0; 647 648 did = ioread32(&opregion->acpi->did2[i]); 649 } 650 651 return did; 652 } 653 654 static void set_did(struct intel_opregion *opregion, int i, u32 val) 655 { 656 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 657 iowrite32(val, &opregion->acpi->didl[i]); 658 } else { 659 i -= ARRAY_SIZE(opregion->acpi->didl); 660 661 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 662 return; 663 664 iowrite32(val, &opregion->acpi->did2[i]); 665 } 666 } 667 668 static void intel_didl_outputs(struct drm_device *dev) 669 { 670 struct drm_i915_private *dev_priv = dev->dev_private; 671 struct intel_opregion *opregion = &dev_priv->opregion; 672 struct drm_connector *connector; 673 ACPI_HANDLE handle, acpi_cdev, acpi_video_bus; 674 u32 device_id; 675 ACPI_STATUS status; 676 u32 temp, max_outputs; 677 int i = 0; 678 679 handle = acpi_get_handle(dev->dev); 680 if (!handle) 681 return; 682 683 if (acpi_is_video_device(handle)) 684 acpi_video_bus = handle; 685 else { 686 acpi_cdev = NULL; 687 acpi_video_bus = NULL; 688 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, handle, acpi_cdev, 689 &acpi_cdev) != AE_NOT_FOUND) { 690 if (acpi_is_video_device(acpi_cdev)) { 691 acpi_video_bus = acpi_cdev; 692 break; 693 } 694 } 695 } 696 697 if (!acpi_video_bus) { 698 DRM_ERROR("No ACPI video bus found\n"); 699 return; 700 } 701 702 acpi_cdev = NULL; 703 /* 704 * In theory, did2, the extended didl, gets added at opregion version 705 * 3.0. In practice, however, we're supposed to set it for earlier 706 * versions as well, since a BIOS that doesn't understand did2 should 707 * not look at it anyway. Use a variable so we can tweak this if a need 708 * arises later. 709 */ 710 max_outputs = ARRAY_SIZE(opregion->acpi->didl) + 711 ARRAY_SIZE(opregion->acpi->did2); 712 713 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpi_video_bus, acpi_cdev, 714 &acpi_cdev) != AE_NOT_FOUND) { 715 if (i >= max_outputs) { 716 DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n", 717 max_outputs); 718 return; 719 } 720 status = acpi_GetInteger(acpi_cdev, "_ADR", &device_id); 721 if (ACPI_SUCCESS(status)) { 722 if (!device_id) 723 goto blind_set; 724 set_did(opregion, i++, (u32)(device_id & 0x0f0f)); 725 } 726 } 727 728 end: 729 DRM_DEBUG_KMS("%d outputs detected\n", i); 730 731 /* If fewer than max outputs, the list must be null terminated */ 732 if (i < max_outputs) 733 set_did(opregion, i, 0); 734 return; 735 736 blind_set: 737 i = 0; 738 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 739 int output_type = ACPI_OTHER_OUTPUT; 740 if (i >= max_outputs) { 741 DRM_DEBUG_KMS("More than %u outputs in connector list\n", 742 max_outputs); 743 return; 744 } 745 switch (connector->connector_type) { 746 case DRM_MODE_CONNECTOR_VGA: 747 case DRM_MODE_CONNECTOR_DVIA: 748 output_type = ACPI_VGA_OUTPUT; 749 break; 750 case DRM_MODE_CONNECTOR_Composite: 751 case DRM_MODE_CONNECTOR_SVIDEO: 752 case DRM_MODE_CONNECTOR_Component: 753 case DRM_MODE_CONNECTOR_9PinDIN: 754 output_type = ACPI_TV_OUTPUT; 755 break; 756 case DRM_MODE_CONNECTOR_DVII: 757 case DRM_MODE_CONNECTOR_DVID: 758 case DRM_MODE_CONNECTOR_DisplayPort: 759 case DRM_MODE_CONNECTOR_HDMIA: 760 case DRM_MODE_CONNECTOR_HDMIB: 761 output_type = ACPI_DIGITAL_OUTPUT; 762 break; 763 case DRM_MODE_CONNECTOR_LVDS: 764 output_type = ACPI_LVDS_OUTPUT; 765 break; 766 } 767 temp = get_did(opregion, i); 768 set_did(opregion, i, temp | (1 << 31) | output_type | i); 769 i++; 770 } 771 goto end; 772 } 773 774 static void intel_setup_cadls(struct drm_device *dev) 775 { 776 struct drm_i915_private *dev_priv = dev->dev_private; 777 struct intel_opregion *opregion = &dev_priv->opregion; 778 int i = 0; 779 u32 disp_id; 780 781 /* Initialize the CADL field by duplicating the DIDL values. 782 * Technically, this is not always correct as display outputs may exist, 783 * but not active. This initialization is necessary for some Clevo 784 * laptops that check this field before processing the brightness and 785 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if 786 * there are less than eight devices. */ 787 do { 788 disp_id = get_did(opregion, i); 789 iowrite32(disp_id, &opregion->acpi->cadl[i]); 790 } while (++i < 8 && disp_id != 0); 791 } 792 793 void intel_opregion_init(struct drm_device *dev) 794 { 795 struct drm_i915_private *dev_priv = dev->dev_private; 796 struct intel_opregion *opregion = &dev_priv->opregion; 797 798 if (!opregion->header) 799 return; 800 801 if (opregion->acpi) { 802 intel_didl_outputs(dev); 803 intel_setup_cadls(dev); 804 805 /* Notify BIOS we are ready to handle ACPI video ext notifs. 806 * Right now, all the events are handled by the ACPI video module. 807 * We don't actually need to do anything with them. */ 808 iowrite32(0, &opregion->acpi->csts); 809 iowrite32(1, &opregion->acpi->drdy); 810 811 system_opregion = opregion; 812 } 813 814 if (opregion->asle) { 815 iowrite32(ASLE_TCHE_BLC_EN, &opregion->asle->tche); 816 iowrite32(ASLE_ARDY_READY, &opregion->asle->ardy); 817 } 818 } 819 820 void intel_opregion_fini(struct drm_device *dev) 821 { 822 struct drm_i915_private *dev_priv = dev->dev_private; 823 struct intel_opregion *opregion = &dev_priv->opregion; 824 825 if (!opregion->header) 826 return; 827 828 if (opregion->asle) 829 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); 830 831 cancel_work_sync(&dev_priv->opregion.asle_work); 832 833 if (opregion->acpi) { 834 iowrite32(0, &opregion->acpi->drdy); 835 836 system_opregion = NULL; 837 } 838 839 /* just clear all opregion memory pointers now */ 840 iounmap(opregion->header); 841 opregion->header = NULL; 842 opregion->acpi = NULL; 843 opregion->swsci = NULL; 844 opregion->asle = NULL; 845 opregion->vbt = NULL; 846 opregion->lid_state = NULL; 847 } 848 849 static void swsci_setup(struct drm_device *dev) 850 { 851 struct drm_i915_private *dev_priv = dev->dev_private; 852 struct intel_opregion *opregion = &dev_priv->opregion; 853 bool requested_callbacks = false; 854 u32 tmp; 855 856 /* Sub-function code 0 is okay, let's allow them. */ 857 opregion->swsci_gbda_sub_functions = 1; 858 opregion->swsci_sbcb_sub_functions = 1; 859 860 /* We use GBDA to ask for supported GBDA calls. */ 861 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 862 /* make the bits match the sub-function codes */ 863 tmp <<= 1; 864 opregion->swsci_gbda_sub_functions |= tmp; 865 } 866 867 /* 868 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 869 * must not call interfaces that are not specifically requested by the 870 * bios. 871 */ 872 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 873 /* here, the bits already match sub-function codes */ 874 opregion->swsci_sbcb_sub_functions |= tmp; 875 requested_callbacks = true; 876 } 877 878 /* 879 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 880 * the callback is _requested_. But we still can't call interfaces that 881 * are not requested. 882 */ 883 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 884 /* make the bits match the sub-function codes */ 885 u32 low = tmp & 0x7ff; 886 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 887 tmp = (high << 4) | (low << 1) | 1; 888 889 /* best guess what to do with supported wrt requested */ 890 if (requested_callbacks) { 891 u32 req = opregion->swsci_sbcb_sub_functions; 892 if ((req & tmp) != req) 893 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp); 894 /* XXX: for now, trust the requested callbacks */ 895 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 896 } else { 897 opregion->swsci_sbcb_sub_functions |= tmp; 898 } 899 } 900 901 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 902 opregion->swsci_gbda_sub_functions, 903 opregion->swsci_sbcb_sub_functions); 904 } 905 #else /* CONFIG_ACPI */ 906 static inline void swsci_setup(struct drm_device *dev) {} 907 #endif /* CONFIG_ACPI */ 908 909 int intel_opregion_setup(struct drm_device *dev) 910 { 911 struct drm_i915_private *dev_priv = dev->dev_private; 912 struct intel_opregion *opregion = &dev_priv->opregion; 913 char __iomem *base; 914 u32 asls, mboxes; 915 char buf[sizeof(OPREGION_SIGNATURE)]; 916 int err = 0; 917 918 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100); 919 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100); 920 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100); 921 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100); 922 923 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls); 924 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); 925 if (asls == 0) { 926 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); 927 return -ENOTSUP; 928 } 929 930 #ifdef CONFIG_ACPI 931 INIT_WORK(&opregion->asle_work, asle_work); 932 #endif 933 934 base = (void *)pmap_mapbios(asls, OPREGION_SIZE); 935 if (!base) 936 return -ENOMEM; 937 938 memcpy_fromio(buf, base, sizeof(buf)); 939 940 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 941 DRM_DEBUG_DRIVER("opregion signature mismatch\n"); 942 err = -EINVAL; 943 goto err_out; 944 } 945 opregion->header = (struct opregion_header *)base; 946 opregion->vbt = base + OPREGION_VBT_OFFSET; 947 948 opregion->lid_state = (u32 *)(base + ACPI_CLID); 949 950 mboxes = ioread32(&opregion->header->mboxes); 951 if (mboxes & MBOX_ACPI) { 952 DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); 953 opregion->acpi = (struct opregion_acpi *)(base + OPREGION_ACPI_OFFSET); 954 } 955 956 if (mboxes & MBOX_SWSCI) { 957 DRM_DEBUG_DRIVER("SWSCI supported\n"); 958 opregion->swsci = (struct opregion_swsci *)(base + OPREGION_SWSCI_OFFSET); 959 swsci_setup(dev); 960 } 961 if (mboxes & MBOX_ASLE) { 962 DRM_DEBUG_DRIVER("ASLE supported\n"); 963 opregion->asle = (struct opregion_asle *)(base + OPREGION_ASLE_OFFSET); 964 965 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); 966 } 967 968 return 0; 969 970 err_out: 971 iounmap(base); 972 return err; 973 } 974