1 /* 2 * Copyright 2008 Intel Corporation <hong.liu@intel.com> 3 * Copyright 2008 Red Hat <mjg@redhat.com> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sub license, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 24 * SOFTWARE. 25 * 26 */ 27 28 #include <linux/dmi.h> 29 30 #include <drm/drmP.h> 31 #include <drm/i915_drm.h> 32 #include "i915_drv.h" 33 #include "intel_drv.h" 34 35 #include <contrib/dev/acpica/source/include/acpi.h> 36 #include <contrib/dev/acpica/source/include/accommon.h> 37 #include <dev/acpica/acpivar.h> 38 39 #define OPREGION_HEADER_OFFSET 0 40 #define OPREGION_ACPI_OFFSET 0x100 41 #define ACPI_CLID 0x01ac /* current lid state indicator */ 42 #define ACPI_CDCK 0x01b0 /* current docking state indicator */ 43 #define OPREGION_SWSCI_OFFSET 0x200 44 #define OPREGION_ASLE_OFFSET 0x300 45 #define OPREGION_VBT_OFFSET 0x400 46 #define OPREGION_ASLE_EXT_OFFSET 0x1C00 47 48 #define OPREGION_SIGNATURE "IntelGraphicsMem" 49 #define MBOX_ACPI (1<<0) 50 #define MBOX_SWSCI (1<<1) 51 #define MBOX_ASLE (1<<2) 52 #define MBOX_ASLE_EXT (1<<4) 53 54 struct opregion_header { 55 u8 signature[16]; 56 u32 size; 57 u32 opregion_ver; 58 u8 bios_ver[32]; 59 u8 vbios_ver[16]; 60 u8 driver_ver[16]; 61 u32 mboxes; 62 u32 driver_model; 63 u32 pcon; 64 u8 dver[32]; 65 u8 rsvd[124]; 66 } __packed; 67 68 /* OpRegion mailbox #1: public ACPI methods */ 69 struct opregion_acpi { 70 u32 drdy; /* driver readiness */ 71 u32 csts; /* notification status */ 72 u32 cevt; /* current event */ 73 u8 rsvd1[20]; 74 u32 didl[8]; /* supported display devices ID list */ 75 u32 cpdl[8]; /* currently presented display list */ 76 u32 cadl[8]; /* currently active display list */ 77 u32 nadl[8]; /* next active devices list */ 78 u32 aslp; /* ASL sleep time-out */ 79 u32 tidx; /* toggle table index */ 80 u32 chpd; /* current hotplug enable indicator */ 81 u32 clid; /* current lid state*/ 82 u32 cdck; /* current docking state */ 83 u32 sxsw; /* Sx state resume */ 84 u32 evts; /* ASL supported events */ 85 u32 cnot; /* current OS notification */ 86 u32 nrdy; /* driver status */ 87 u32 did2[7]; /* extended supported display devices ID list */ 88 u32 cpd2[7]; /* extended attached display devices list */ 89 u8 rsvd2[4]; 90 } __packed; 91 92 /* OpRegion mailbox #2: SWSCI */ 93 struct opregion_swsci { 94 u32 scic; /* SWSCI command|status|data */ 95 u32 parm; /* command parameters */ 96 u32 dslp; /* driver sleep time-out */ 97 u8 rsvd[244]; 98 } __packed; 99 100 /* OpRegion mailbox #3: ASLE */ 101 struct opregion_asle { 102 u32 ardy; /* driver readiness */ 103 u32 aslc; /* ASLE interrupt command */ 104 u32 tche; /* technology enabled indicator */ 105 u32 alsi; /* current ALS illuminance reading */ 106 u32 bclp; /* backlight brightness to set */ 107 u32 pfit; /* panel fitting state */ 108 u32 cblv; /* current brightness level */ 109 u16 bclm[20]; /* backlight level duty cycle mapping table */ 110 u32 cpfm; /* current panel fitting mode */ 111 u32 epfm; /* enabled panel fitting modes */ 112 u8 plut[74]; /* panel LUT and identifier */ 113 u32 pfmb; /* PWM freq and min brightness */ 114 u32 cddv; /* color correction default values */ 115 u32 pcft; /* power conservation features */ 116 u32 srot; /* supported rotation angles */ 117 u32 iuer; /* IUER events */ 118 u64 fdss; 119 u32 fdsp; 120 u32 stat; 121 u64 rvda; /* Physical address of raw vbt data */ 122 u32 rvds; /* Size of raw vbt data */ 123 u8 rsvd[58]; 124 } __packed; 125 126 /* OpRegion mailbox #5: ASLE ext */ 127 struct opregion_asle_ext { 128 u32 phed; /* Panel Header */ 129 u8 bddc[256]; /* Panel EDID */ 130 u8 rsvd[764]; 131 } __packed; 132 133 /* Driver readiness indicator */ 134 #define ASLE_ARDY_READY (1 << 0) 135 #define ASLE_ARDY_NOT_READY (0 << 0) 136 137 /* ASLE Interrupt Command (ASLC) bits */ 138 #define ASLC_SET_ALS_ILLUM (1 << 0) 139 #define ASLC_SET_BACKLIGHT (1 << 1) 140 #define ASLC_SET_PFIT (1 << 2) 141 #define ASLC_SET_PWM_FREQ (1 << 3) 142 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4) 143 #define ASLC_BUTTON_ARRAY (1 << 5) 144 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6) 145 #define ASLC_DOCKING_INDICATOR (1 << 7) 146 #define ASLC_ISCT_STATE_CHANGE (1 << 8) 147 #define ASLC_REQ_MSK 0x1ff 148 /* response bits */ 149 #define ASLC_ALS_ILLUM_FAILED (1 << 10) 150 #define ASLC_BACKLIGHT_FAILED (1 << 12) 151 #define ASLC_PFIT_FAILED (1 << 14) 152 #define ASLC_PWM_FREQ_FAILED (1 << 16) 153 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18) 154 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20) 155 #define ASLC_CONVERTIBLE_FAILED (1 << 22) 156 #define ASLC_DOCKING_FAILED (1 << 24) 157 #define ASLC_ISCT_STATE_FAILED (1 << 26) 158 159 /* Technology enabled indicator */ 160 #define ASLE_TCHE_ALS_EN (1 << 0) 161 #define ASLE_TCHE_BLC_EN (1 << 1) 162 #define ASLE_TCHE_PFIT_EN (1 << 2) 163 #define ASLE_TCHE_PFMB_EN (1 << 3) 164 165 /* ASLE backlight brightness to set */ 166 #define ASLE_BCLP_VALID (1<<31) 167 #define ASLE_BCLP_MSK (~(1<<31)) 168 169 /* ASLE panel fitting request */ 170 #define ASLE_PFIT_VALID (1<<31) 171 #define ASLE_PFIT_CENTER (1<<0) 172 #define ASLE_PFIT_STRETCH_TEXT (1<<1) 173 #define ASLE_PFIT_STRETCH_GFX (1<<2) 174 175 /* PWM frequency and minimum brightness */ 176 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) 177 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) 178 #define ASLE_PFMB_PWM_MASK (0x7ffffe00) 179 #define ASLE_PFMB_PWM_VALID (1<<31) 180 181 #define ASLE_CBLV_VALID (1<<31) 182 183 /* IUER */ 184 #define ASLE_IUER_DOCKING (1 << 7) 185 #define ASLE_IUER_CONVERTIBLE (1 << 6) 186 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4) 187 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3) 188 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2) 189 #define ASLE_IUER_WINDOWS_BTN (1 << 1) 190 #define ASLE_IUER_POWER_BTN (1 << 0) 191 192 /* Software System Control Interrupt (SWSCI) */ 193 #define SWSCI_SCIC_INDICATOR (1 << 0) 194 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 195 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) 196 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 197 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) 198 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 199 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) 200 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 201 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) 202 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 203 204 #define SWSCI_FUNCTION_CODE(main, sub) \ 205 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ 206 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) 207 208 /* SWSCI: Get BIOS Data (GBDA) */ 209 #define SWSCI_GBDA 4 210 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) 211 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) 212 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) 213 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) 214 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) 215 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) 216 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) 217 218 /* SWSCI: System BIOS Callbacks (SBCB) */ 219 #define SWSCI_SBCB 6 220 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) 221 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) 222 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) 223 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) 224 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) 225 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) 226 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) 227 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) 228 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) 229 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) 230 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) 231 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) 232 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) 233 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) 234 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) 235 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) 236 237 /* 238 * ACPI Specification, Revision 5.0, Appendix B.3.2 _DOD (Enumerate All Devices 239 * Attached to the Display Adapter). 240 */ 241 #define ACPI_DISPLAY_INDEX_SHIFT 0 242 #define ACPI_DISPLAY_INDEX_MASK (0xf << 0) 243 #define ACPI_DISPLAY_PORT_ATTACHMENT_SHIFT 4 244 #define ACPI_DISPLAY_PORT_ATTACHMENT_MASK (0xf << 4) 245 #define ACPI_DISPLAY_TYPE_SHIFT 8 246 #define ACPI_DISPLAY_TYPE_MASK (0xf << 8) 247 #define ACPI_DISPLAY_TYPE_OTHER (0 << 8) 248 #define ACPI_DISPLAY_TYPE_VGA (1 << 8) 249 #define ACPI_DISPLAY_TYPE_TV (2 << 8) 250 #define ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL (3 << 8) 251 #define ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL (4 << 8) 252 #define ACPI_VENDOR_SPECIFIC_SHIFT 12 253 #define ACPI_VENDOR_SPECIFIC_MASK (0xf << 12) 254 #define ACPI_BIOS_CAN_DETECT (1 << 16) 255 #define ACPI_DEPENDS_ON_VGA (1 << 17) 256 #define ACPI_PIPE_ID_SHIFT 18 257 #define ACPI_PIPE_ID_MASK (7 << 18) 258 #define ACPI_DEVICE_ID_SCHEME (1 << 31) 259 260 #define MAX_DSLP 1500 261 262 static int swsci(struct drm_i915_private *dev_priv, 263 u32 function, u32 parm, u32 *parm_out) 264 { 265 struct opregion_swsci *swsci = dev_priv->opregion.swsci; 266 struct pci_dev *pdev = dev_priv->drm.pdev; 267 u32 main_function, sub_function, scic; 268 u16 swsci_val; 269 u32 dslp; 270 271 if (!swsci) 272 return -ENODEV; 273 274 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 275 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 276 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 277 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 278 279 /* Check if we can call the function. See swsci_setup for details. */ 280 if (main_function == SWSCI_SBCB) { 281 if ((dev_priv->opregion.swsci_sbcb_sub_functions & 282 (1 << sub_function)) == 0) 283 return -EINVAL; 284 } else if (main_function == SWSCI_GBDA) { 285 if ((dev_priv->opregion.swsci_gbda_sub_functions & 286 (1 << sub_function)) == 0) 287 return -EINVAL; 288 } 289 290 /* Driver sleep timeout in ms. */ 291 dslp = swsci->dslp; 292 if (!dslp) { 293 /* The spec says 2ms should be the default, but it's too small 294 * for some machines. */ 295 dslp = 50; 296 } else if (dslp > MAX_DSLP) { 297 /* Hey bios, trust must be earned. */ 298 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 299 "using %u ms instead\n", dslp, MAX_DSLP); 300 dslp = MAX_DSLP; 301 } 302 303 /* The spec tells us to do this, but we are the only user... */ 304 scic = swsci->scic; 305 if (scic & SWSCI_SCIC_INDICATOR) { 306 DRM_DEBUG_DRIVER("SWSCI request already in progress\n"); 307 return -EBUSY; 308 } 309 310 scic = function | SWSCI_SCIC_INDICATOR; 311 312 swsci->parm = parm; 313 swsci->scic = scic; 314 315 /* Ensure SCI event is selected and event trigger is cleared. */ 316 pci_read_config_word(pdev, SWSCI, &swsci_val); 317 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) { 318 swsci_val |= SWSCI_SCISEL; 319 swsci_val &= ~SWSCI_GSSCIE; 320 pci_write_config_word(pdev, SWSCI, swsci_val); 321 } 322 323 /* Use event trigger to tell bios to check the mail. */ 324 swsci_val |= SWSCI_GSSCIE; 325 pci_write_config_word(pdev, SWSCI, swsci_val); 326 327 /* Poll for the result. */ 328 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0) 329 if (wait_for(C, dslp)) { 330 DRM_DEBUG_DRIVER("SWSCI request timed out\n"); 331 return -ETIMEDOUT; 332 } 333 334 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 335 SWSCI_SCIC_EXIT_STATUS_SHIFT; 336 337 /* Note: scic == 0 is an error! */ 338 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 339 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic); 340 return -EIO; 341 } 342 343 if (parm_out) 344 *parm_out = swsci->parm; 345 346 return 0; 347 348 #undef C 349 } 350 351 #define DISPLAY_TYPE_CRT 0 352 #define DISPLAY_TYPE_TV 1 353 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 354 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 355 356 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 357 bool enable) 358 { 359 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev); 360 u32 parm = 0; 361 u32 type = 0; 362 u32 port; 363 364 /* don't care about old stuff for now */ 365 if (!HAS_DDI(dev_priv)) 366 return 0; 367 368 if (intel_encoder->type == INTEL_OUTPUT_DSI) 369 port = 0; 370 else 371 port = intel_ddi_get_encoder_port(intel_encoder); 372 373 if (port == PORT_E) { 374 port = 0; 375 } else { 376 parm |= 1 << port; 377 port++; 378 } 379 380 if (!enable) 381 parm |= 4 << 8; 382 383 switch (intel_encoder->type) { 384 case INTEL_OUTPUT_ANALOG: 385 type = DISPLAY_TYPE_CRT; 386 break; 387 case INTEL_OUTPUT_UNKNOWN: 388 case INTEL_OUTPUT_DP: 389 case INTEL_OUTPUT_HDMI: 390 case INTEL_OUTPUT_DP_MST: 391 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 392 break; 393 case INTEL_OUTPUT_EDP: 394 case INTEL_OUTPUT_DSI: 395 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 396 break; 397 default: 398 WARN_ONCE(1, "unsupported intel_encoder type %d\n", 399 intel_encoder->type); 400 return -EINVAL; 401 } 402 403 parm |= type << (16 + port * 3); 404 405 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 406 } 407 408 static const struct { 409 pci_power_t pci_power_state; 410 u32 parm; 411 } power_state_map[] = { 412 { PCI_D0, 0x00 }, 413 { PCI_D1, 0x01 }, 414 { PCI_D2, 0x02 }, 415 { PCI_D3hot, 0x04 }, 416 { PCI_D3cold, 0x04 }, 417 }; 418 419 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv, 420 pci_power_t state) 421 { 422 int i; 423 424 if (!HAS_DDI(dev_priv)) 425 return 0; 426 427 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 428 if (state == power_state_map[i].pci_power_state) 429 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE, 430 power_state_map[i].parm, NULL); 431 } 432 433 return -EINVAL; 434 } 435 436 static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp) 437 { 438 struct intel_connector *connector; 439 struct drm_connector_list_iter conn_iter; 440 struct opregion_asle *asle = dev_priv->opregion.asle; 441 struct drm_device *dev = &dev_priv->drm; 442 443 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); 444 445 #ifndef __DragonFly__ 446 if (acpi_video_get_backlight_type() == acpi_backlight_native) { 447 DRM_DEBUG_KMS("opregion backlight request ignored\n"); 448 return 0; 449 } 450 #endif 451 452 if (!(bclp & ASLE_BCLP_VALID)) 453 return ASLC_BACKLIGHT_FAILED; 454 455 bclp &= ASLE_BCLP_MSK; 456 if (bclp > 255) 457 return ASLC_BACKLIGHT_FAILED; 458 459 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 460 461 /* 462 * Update backlight on all connectors that support backlight (usually 463 * only one). 464 */ 465 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); 466 drm_connector_list_iter_begin(dev, &conn_iter); 467 for_each_intel_connector_iter(connector, &conn_iter) 468 intel_panel_set_backlight_acpi(connector, bclp, 255); 469 drm_connector_list_iter_end(&conn_iter); 470 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID; 471 472 drm_modeset_unlock(&dev->mode_config.connection_mutex); 473 474 475 return 0; 476 } 477 478 static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi) 479 { 480 /* alsi is the current ALS reading in lux. 0 indicates below sensor 481 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 482 DRM_DEBUG_DRIVER("Illum is not supported\n"); 483 return ASLC_ALS_ILLUM_FAILED; 484 } 485 486 static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb) 487 { 488 DRM_DEBUG_DRIVER("PWM freq is not supported\n"); 489 return ASLC_PWM_FREQ_FAILED; 490 } 491 492 static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit) 493 { 494 /* Panel fitting is currently controlled by the X code, so this is a 495 noop until modesetting support works fully */ 496 DRM_DEBUG_DRIVER("Pfit is not supported\n"); 497 return ASLC_PFIT_FAILED; 498 } 499 500 static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot) 501 { 502 DRM_DEBUG_DRIVER("SROT is not supported\n"); 503 return ASLC_ROTATION_ANGLES_FAILED; 504 } 505 506 static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer) 507 { 508 if (!iuer) 509 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n"); 510 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 511 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n"); 512 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 513 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n"); 514 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 515 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n"); 516 if (iuer & ASLE_IUER_WINDOWS_BTN) 517 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n"); 518 if (iuer & ASLE_IUER_POWER_BTN) 519 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n"); 520 521 return ASLC_BUTTON_ARRAY_FAILED; 522 } 523 524 static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer) 525 { 526 if (iuer & ASLE_IUER_CONVERTIBLE) 527 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n"); 528 else 529 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n"); 530 531 return ASLC_CONVERTIBLE_FAILED; 532 } 533 534 static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer) 535 { 536 if (iuer & ASLE_IUER_DOCKING) 537 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n"); 538 else 539 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n"); 540 541 return ASLC_DOCKING_FAILED; 542 } 543 544 static u32 asle_isct_state(struct drm_i915_private *dev_priv) 545 { 546 DRM_DEBUG_DRIVER("ISCT is not supported\n"); 547 return ASLC_ISCT_STATE_FAILED; 548 } 549 550 static void asle_work(struct work_struct *work) 551 { 552 struct intel_opregion *opregion = 553 container_of(work, struct intel_opregion, asle_work); 554 struct drm_i915_private *dev_priv = 555 container_of(opregion, struct drm_i915_private, opregion); 556 struct opregion_asle *asle = dev_priv->opregion.asle; 557 u32 aslc_stat = 0; 558 u32 aslc_req; 559 560 if (!asle) 561 return; 562 563 aslc_req = asle->aslc; 564 565 if (!(aslc_req & ASLC_REQ_MSK)) { 566 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n", 567 aslc_req); 568 return; 569 } 570 571 if (aslc_req & ASLC_SET_ALS_ILLUM) 572 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi); 573 574 if (aslc_req & ASLC_SET_BACKLIGHT) 575 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp); 576 577 if (aslc_req & ASLC_SET_PFIT) 578 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit); 579 580 if (aslc_req & ASLC_SET_PWM_FREQ) 581 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb); 582 583 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 584 aslc_stat |= asle_set_supported_rotation_angles(dev_priv, 585 asle->srot); 586 587 if (aslc_req & ASLC_BUTTON_ARRAY) 588 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer); 589 590 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 591 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer); 592 593 if (aslc_req & ASLC_DOCKING_INDICATOR) 594 aslc_stat |= asle_set_docking(dev_priv, asle->iuer); 595 596 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 597 aslc_stat |= asle_isct_state(dev_priv); 598 599 asle->aslc = aslc_stat; 600 } 601 602 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv) 603 { 604 if (dev_priv->opregion.asle) 605 schedule_work(&dev_priv->opregion.asle_work); 606 } 607 608 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 609 #define ACPI_EV_LID (1<<1) 610 #define ACPI_EV_DOCK (1<<2) 611 612 static struct intel_opregion *system_opregion; 613 614 #if 0 615 static int intel_opregion_video_event(struct notifier_block *nb, 616 unsigned long val, void *data) 617 { 618 /* The only video events relevant to opregion are 0x80. These indicate 619 either a docking event, lid switch or display switch request. In 620 Linux, these are handled by the dock, button and video drivers. 621 */ 622 623 struct acpi_bus_event *event = data; 624 struct opregion_acpi *acpi; 625 int ret = NOTIFY_OK; 626 627 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 628 return NOTIFY_DONE; 629 630 if (!system_opregion) 631 return NOTIFY_DONE; 632 633 acpi = system_opregion->acpi; 634 635 if (event->type == 0x80 && ((acpi->cevt & 1) == 0)) 636 ret = NOTIFY_BAD; 637 638 acpi->csts = 0; 639 640 return ret; 641 } 642 643 static struct notifier_block intel_opregion_notifier = { 644 .notifier_call = intel_opregion_video_event, 645 }; 646 #endif 647 648 /* 649 * Initialise the DIDL field in opregion. This passes a list of devices to 650 * the firmware. Values are defined by section B.4.2 of the ACPI specification 651 * (version 3) 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 opregion->acpi->didl[i] = val; 658 } else { 659 i -= ARRAY_SIZE(opregion->acpi->didl); 660 661 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 662 return; 663 664 opregion->acpi->did2[i] = val; 665 } 666 } 667 668 static u32 acpi_display_type(struct intel_connector *connector) 669 { 670 u32 display_type; 671 672 switch (connector->base.connector_type) { 673 case DRM_MODE_CONNECTOR_VGA: 674 case DRM_MODE_CONNECTOR_DVIA: 675 display_type = ACPI_DISPLAY_TYPE_VGA; 676 break; 677 case DRM_MODE_CONNECTOR_Composite: 678 case DRM_MODE_CONNECTOR_SVIDEO: 679 case DRM_MODE_CONNECTOR_Component: 680 case DRM_MODE_CONNECTOR_9PinDIN: 681 case DRM_MODE_CONNECTOR_TV: 682 display_type = ACPI_DISPLAY_TYPE_TV; 683 break; 684 case DRM_MODE_CONNECTOR_DVII: 685 case DRM_MODE_CONNECTOR_DVID: 686 case DRM_MODE_CONNECTOR_DisplayPort: 687 case DRM_MODE_CONNECTOR_HDMIA: 688 case DRM_MODE_CONNECTOR_HDMIB: 689 display_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL; 690 break; 691 case DRM_MODE_CONNECTOR_LVDS: 692 case DRM_MODE_CONNECTOR_eDP: 693 case DRM_MODE_CONNECTOR_DSI: 694 display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL; 695 break; 696 case DRM_MODE_CONNECTOR_Unknown: 697 case DRM_MODE_CONNECTOR_VIRTUAL: 698 display_type = ACPI_DISPLAY_TYPE_OTHER; 699 break; 700 default: 701 MISSING_CASE(connector->base.connector_type); 702 display_type = ACPI_DISPLAY_TYPE_OTHER; 703 break; 704 } 705 706 return display_type; 707 } 708 709 static void intel_didl_outputs(struct drm_i915_private *dev_priv) 710 { 711 struct intel_opregion *opregion = &dev_priv->opregion; 712 struct intel_connector *connector; 713 struct drm_connector_list_iter conn_iter; 714 int i = 0, max_outputs; 715 int display_index[16] = {}; 716 717 /* 718 * In theory, did2, the extended didl, gets added at opregion version 719 * 3.0. In practice, however, we're supposed to set it for earlier 720 * versions as well, since a BIOS that doesn't understand did2 should 721 * not look at it anyway. Use a variable so we can tweak this if a need 722 * arises later. 723 */ 724 max_outputs = ARRAY_SIZE(opregion->acpi->didl) + 725 ARRAY_SIZE(opregion->acpi->did2); 726 727 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 728 for_each_intel_connector_iter(connector, &conn_iter) { 729 u32 device_id, type; 730 731 device_id = acpi_display_type(connector); 732 733 /* Use display type specific display index. */ 734 type = (device_id & ACPI_DISPLAY_TYPE_MASK) 735 >> ACPI_DISPLAY_TYPE_SHIFT; 736 device_id |= display_index[type]++ << ACPI_DISPLAY_INDEX_SHIFT; 737 738 connector->acpi_device_id = device_id; 739 if (i < max_outputs) 740 set_did(opregion, i, device_id); 741 i++; 742 } 743 drm_connector_list_iter_end(&conn_iter); 744 745 DRM_DEBUG_KMS("%d outputs detected\n", i); 746 747 if (i > max_outputs) 748 DRM_ERROR("More than %d outputs in connector list\n", 749 max_outputs); 750 751 /* If fewer than max outputs, the list must be null terminated */ 752 if (i < max_outputs) 753 set_did(opregion, i, 0); 754 } 755 756 static void intel_setup_cadls(struct drm_i915_private *dev_priv) 757 { 758 struct intel_opregion *opregion = &dev_priv->opregion; 759 struct intel_connector *connector; 760 struct drm_connector_list_iter conn_iter; 761 int i = 0; 762 763 /* 764 * Initialize the CADL field from the connector device ids. This is 765 * essentially the same as copying from the DIDL. Technically, this is 766 * not always correct as display outputs may exist, but not active. This 767 * initialization is necessary for some Clevo laptops that check this 768 * field before processing the brightness and display switching hotkeys. 769 * 770 * Note that internal panels should be at the front of the connector 771 * list already, ensuring they're not left out. 772 */ 773 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 774 for_each_intel_connector_iter(connector, &conn_iter) { 775 if (i >= ARRAY_SIZE(opregion->acpi->cadl)) 776 break; 777 opregion->acpi->cadl[i++] = connector->acpi_device_id; 778 } 779 drm_connector_list_iter_end(&conn_iter); 780 781 /* If fewer than 8 active devices, the list must be null terminated */ 782 if (i < ARRAY_SIZE(opregion->acpi->cadl)) 783 opregion->acpi->cadl[i] = 0; 784 } 785 786 void intel_opregion_register(struct drm_i915_private *dev_priv) 787 { 788 struct intel_opregion *opregion = &dev_priv->opregion; 789 790 if (!opregion->header) 791 return; 792 793 if (opregion->acpi) { 794 intel_didl_outputs(dev_priv); 795 intel_setup_cadls(dev_priv); 796 797 /* Notify BIOS we are ready to handle ACPI video ext notifs. 798 * Right now, all the events are handled by the ACPI video module. 799 * We don't actually need to do anything with them. */ 800 opregion->acpi->csts = 0; 801 opregion->acpi->drdy = 1; 802 803 system_opregion = opregion; 804 } 805 806 if (opregion->asle) { 807 opregion->asle->tche = ASLE_TCHE_BLC_EN; 808 opregion->asle->ardy = ASLE_ARDY_READY; 809 } 810 } 811 812 void intel_opregion_unregister(struct drm_i915_private *dev_priv) 813 { 814 struct intel_opregion *opregion = &dev_priv->opregion; 815 816 if (!opregion->header) 817 return; 818 819 if (opregion->asle) 820 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 821 822 cancel_work_sync(&dev_priv->opregion.asle_work); 823 824 if (opregion->acpi) { 825 opregion->acpi->drdy = 0; 826 827 system_opregion = NULL; 828 } 829 830 /* just clear all opregion memory pointers now */ 831 iounmap(opregion->header); 832 if (opregion->rvda) { 833 iounmap(opregion->rvda); 834 opregion->rvda = NULL; 835 } 836 opregion->header = NULL; 837 opregion->acpi = NULL; 838 opregion->swsci = NULL; 839 opregion->asle = NULL; 840 opregion->vbt = NULL; 841 opregion->lid_state = NULL; 842 } 843 844 static void swsci_setup(struct drm_i915_private *dev_priv) 845 { 846 struct intel_opregion *opregion = &dev_priv->opregion; 847 bool requested_callbacks = false; 848 u32 tmp; 849 850 /* Sub-function code 0 is okay, let's allow them. */ 851 opregion->swsci_gbda_sub_functions = 1; 852 opregion->swsci_sbcb_sub_functions = 1; 853 854 /* We use GBDA to ask for supported GBDA calls. */ 855 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 856 /* make the bits match the sub-function codes */ 857 tmp <<= 1; 858 opregion->swsci_gbda_sub_functions |= tmp; 859 } 860 861 /* 862 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 863 * must not call interfaces that are not specifically requested by the 864 * bios. 865 */ 866 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 867 /* here, the bits already match sub-function codes */ 868 opregion->swsci_sbcb_sub_functions |= tmp; 869 requested_callbacks = true; 870 } 871 872 /* 873 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 874 * the callback is _requested_. But we still can't call interfaces that 875 * are not requested. 876 */ 877 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 878 /* make the bits match the sub-function codes */ 879 u32 low = tmp & 0x7ff; 880 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 881 tmp = (high << 4) | (low << 1) | 1; 882 883 /* best guess what to do with supported wrt requested */ 884 if (requested_callbacks) { 885 u32 req = opregion->swsci_sbcb_sub_functions; 886 if ((req & tmp) != req) 887 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp); 888 /* XXX: for now, trust the requested callbacks */ 889 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 890 } else { 891 opregion->swsci_sbcb_sub_functions |= tmp; 892 } 893 } 894 895 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 896 opregion->swsci_gbda_sub_functions, 897 opregion->swsci_sbcb_sub_functions); 898 } 899 900 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) 901 { 902 DRM_DEBUG_KMS("Falling back to manually reading VBT from " 903 "VBIOS ROM for %s\n", id->ident); 904 return 1; 905 } 906 907 static const struct dmi_system_id intel_no_opregion_vbt[] = { 908 { 909 .callback = intel_no_opregion_vbt_callback, 910 .ident = "ThinkCentre A57", 911 .matches = { 912 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 913 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), 914 }, 915 }, 916 { } 917 }; 918 919 int intel_opregion_setup(struct drm_i915_private *dev_priv) 920 { 921 struct intel_opregion *opregion = &dev_priv->opregion; 922 struct pci_dev *pdev = dev_priv->drm.pdev; 923 u32 asls, mboxes; 924 char buf[sizeof(OPREGION_SIGNATURE)]; 925 int err = 0; 926 void *base; 927 const void *vbt; 928 u32 vbt_size; 929 930 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100); 931 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100); 932 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100); 933 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100); 934 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400); 935 936 pci_read_config_dword(pdev, ASLS, &asls); 937 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); 938 if (asls == 0) { 939 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); 940 return -ENOTSUPP; 941 } 942 943 INIT_WORK(&opregion->asle_work, asle_work); 944 945 base = (void *)pmap_mapbios(asls, OPREGION_SIZE); 946 if (!base) 947 return -ENOMEM; 948 949 memcpy(buf, base, sizeof(buf)); 950 951 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 952 DRM_DEBUG_DRIVER("opregion signature mismatch\n"); 953 err = -EINVAL; 954 goto err_out; 955 } 956 opregion->header = base; 957 opregion->lid_state = base + ACPI_CLID; 958 959 mboxes = opregion->header->mboxes; 960 if (mboxes & MBOX_ACPI) { 961 DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); 962 opregion->acpi = base + OPREGION_ACPI_OFFSET; 963 } 964 965 if (mboxes & MBOX_SWSCI) { 966 DRM_DEBUG_DRIVER("SWSCI supported\n"); 967 opregion->swsci = base + OPREGION_SWSCI_OFFSET; 968 swsci_setup(dev_priv); 969 } 970 971 if (mboxes & MBOX_ASLE) { 972 DRM_DEBUG_DRIVER("ASLE supported\n"); 973 opregion->asle = base + OPREGION_ASLE_OFFSET; 974 975 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 976 } 977 978 if (mboxes & MBOX_ASLE_EXT) 979 DRM_DEBUG_DRIVER("ASLE extension supported\n"); 980 981 if (dmi_check_system(intel_no_opregion_vbt)) 982 goto out; 983 984 if (opregion->header->opregion_ver >= 2 && opregion->asle && 985 opregion->asle->rvda && opregion->asle->rvds) { 986 opregion->rvda = pmap_mapbios(opregion->asle->rvda, 987 opregion->asle->rvds); 988 vbt = opregion->rvda; 989 vbt_size = opregion->asle->rvds; 990 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 991 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n"); 992 opregion->vbt = vbt; 993 opregion->vbt_size = vbt_size; 994 goto out; 995 } else { 996 DRM_DEBUG_KMS("Invalid VBT in ACPI OpRegion (RVDA)\n"); 997 } 998 } 999 1000 vbt = base + OPREGION_VBT_OFFSET; 1001 /* 1002 * The VBT specification says that if the ASLE ext mailbox is not used 1003 * its area is reserved, but on some CHT boards the VBT extends into the 1004 * ASLE ext area. Allow this even though it is against the spec, so we 1005 * do not end up rejecting the VBT on those boards (and end up not 1006 * finding the LCD panel because of this). 1007 */ 1008 vbt_size = (mboxes & MBOX_ASLE_EXT) ? 1009 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE; 1010 vbt_size -= OPREGION_VBT_OFFSET; 1011 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 1012 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n"); 1013 opregion->vbt = vbt; 1014 opregion->vbt_size = vbt_size; 1015 } else { 1016 DRM_DEBUG_KMS("Invalid VBT in ACPI OpRegion (Mailbox #4)\n"); 1017 } 1018 1019 out: 1020 return 0; 1021 1022 err_out: 1023 iounmap(base); 1024 return err; 1025 } 1026 1027 static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id) 1028 { 1029 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident); 1030 return 1; 1031 } 1032 1033 static const struct dmi_system_id intel_use_opregion_panel_type[] = { 1034 { 1035 .callback = intel_use_opregion_panel_type_callback, 1036 .ident = "Conrac GmbH IX45GM2", 1037 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"), 1038 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"), 1039 }, 1040 }, 1041 { } 1042 }; 1043 1044 int 1045 intel_opregion_get_panel_type(struct drm_i915_private *dev_priv) 1046 { 1047 u32 panel_details; 1048 int ret; 1049 1050 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details); 1051 if (ret) { 1052 DRM_DEBUG_KMS("Failed to get panel details from OpRegion (%d)\n", 1053 ret); 1054 return ret; 1055 } 1056 1057 ret = (panel_details >> 8) & 0xff; 1058 if (ret > 0x10) { 1059 DRM_DEBUG_KMS("Invalid OpRegion panel type 0x%x\n", ret); 1060 return -EINVAL; 1061 } 1062 1063 /* fall back to VBT panel type? */ 1064 if (ret == 0x0) { 1065 DRM_DEBUG_KMS("No panel type in OpRegion\n"); 1066 return -ENODEV; 1067 } 1068 1069 /* 1070 * So far we know that some machined must use it, others must not use it. 1071 * There doesn't seem to be any way to determine which way to go, except 1072 * via a quirk list :( 1073 */ 1074 if (!dmi_check_system(intel_use_opregion_panel_type)) { 1075 DRM_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1); 1076 return -ENODEV; 1077 } 1078 1079 return ret - 1; 1080 } 1081