1/* 2 * Copyright 2008 Intel Corporation <hong.liu@intel.com> 3 * Copyright 2008 Red Hat <mjg@redhat.com> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sub license, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 24 * SOFTWARE. 25 * 26 */ 27 28#include <linux/acpi.h> 29#include <linux/dmi.h> 30#include <linux/firmware.h> 31#include <acpi/video.h> 32 33#include "display/intel_panel.h" 34 35#include "i915_drv.h" 36#include "intel_acpi.h" 37#include "intel_display_types.h" 38#include "intel_opregion.h" 39 40#define OPREGION_HEADER_OFFSET 0 41#define OPREGION_ACPI_OFFSET 0x100 42#define ACPI_CLID 0x01ac /* current lid state indicator */ 43#define ACPI_CDCK 0x01b0 /* current docking state indicator */ 44#define OPREGION_SWSCI_OFFSET 0x200 45#define OPREGION_ASLE_OFFSET 0x300 46#define OPREGION_VBT_OFFSET 0x400 47#define OPREGION_ASLE_EXT_OFFSET 0x1C00 48 49#define OPREGION_SIGNATURE "IntelGraphicsMem" 50#define MBOX_ACPI (1<<0) 51#define MBOX_SWSCI (1<<1) 52#define MBOX_ASLE (1<<2) 53#define MBOX_ASLE_EXT (1<<4) 54 55struct opregion_header { 56 u8 signature[16]; 57 u32 size; 58 struct { 59 u8 rsvd; 60 u8 revision; 61 u8 minor; 62 u8 major; 63 } __packed over; 64 u8 bios_ver[32]; 65 u8 vbios_ver[16]; 66 u8 driver_ver[16]; 67 u32 mboxes; 68 u32 driver_model; 69 u32 pcon; 70 u8 dver[32]; 71 u8 rsvd[124]; 72} __packed; 73 74/* OpRegion mailbox #1: public ACPI methods */ 75struct opregion_acpi { 76 u32 drdy; /* driver readiness */ 77 u32 csts; /* notification status */ 78 u32 cevt; /* current event */ 79 u8 rsvd1[20]; 80 u32 didl[8]; /* supported display devices ID list */ 81 u32 cpdl[8]; /* currently presented display list */ 82 u32 cadl[8]; /* currently active display list */ 83 u32 nadl[8]; /* next active devices list */ 84 u32 aslp; /* ASL sleep time-out */ 85 u32 tidx; /* toggle table index */ 86 u32 chpd; /* current hotplug enable indicator */ 87 u32 clid; /* current lid state*/ 88 u32 cdck; /* current docking state */ 89 u32 sxsw; /* Sx state resume */ 90 u32 evts; /* ASL supported events */ 91 u32 cnot; /* current OS notification */ 92 u32 nrdy; /* driver status */ 93 u32 did2[7]; /* extended supported display devices ID list */ 94 u32 cpd2[7]; /* extended attached display devices list */ 95 u8 rsvd2[4]; 96} __packed; 97 98/* OpRegion mailbox #2: SWSCI */ 99struct opregion_swsci { 100 u32 scic; /* SWSCI command|status|data */ 101 u32 parm; /* command parameters */ 102 u32 dslp; /* driver sleep time-out */ 103 u8 rsvd[244]; 104} __packed; 105 106/* OpRegion mailbox #3: ASLE */ 107struct opregion_asle { 108 u32 ardy; /* driver readiness */ 109 u32 aslc; /* ASLE interrupt command */ 110 u32 tche; /* technology enabled indicator */ 111 u32 alsi; /* current ALS illuminance reading */ 112 u32 bclp; /* backlight brightness to set */ 113 u32 pfit; /* panel fitting state */ 114 u32 cblv; /* current brightness level */ 115 u16 bclm[20]; /* backlight level duty cycle mapping table */ 116 u32 cpfm; /* current panel fitting mode */ 117 u32 epfm; /* enabled panel fitting modes */ 118 u8 plut[74]; /* panel LUT and identifier */ 119 u32 pfmb; /* PWM freq and min brightness */ 120 u32 cddv; /* color correction default values */ 121 u32 pcft; /* power conservation features */ 122 u32 srot; /* supported rotation angles */ 123 u32 iuer; /* IUER events */ 124 u64 fdss; 125 u32 fdsp; 126 u32 stat; 127 u64 rvda; /* Physical (2.0) or relative from opregion (2.1+) 128 * address of raw VBT data. */ 129 u32 rvds; /* Size of raw vbt data */ 130 u8 rsvd[58]; 131} __packed; 132 133/* OpRegion mailbox #5: ASLE ext */ 134struct opregion_asle_ext { 135 u32 phed; /* Panel Header */ 136 u8 bddc[256]; /* Panel EDID */ 137 u8 rsvd[764]; 138} __packed; 139 140/* Driver readiness indicator */ 141#define ASLE_ARDY_READY (1 << 0) 142#define ASLE_ARDY_NOT_READY (0 << 0) 143 144/* ASLE Interrupt Command (ASLC) bits */ 145#define ASLC_SET_ALS_ILLUM (1 << 0) 146#define ASLC_SET_BACKLIGHT (1 << 1) 147#define ASLC_SET_PFIT (1 << 2) 148#define ASLC_SET_PWM_FREQ (1 << 3) 149#define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4) 150#define ASLC_BUTTON_ARRAY (1 << 5) 151#define ASLC_CONVERTIBLE_INDICATOR (1 << 6) 152#define ASLC_DOCKING_INDICATOR (1 << 7) 153#define ASLC_ISCT_STATE_CHANGE (1 << 8) 154#define ASLC_REQ_MSK 0x1ff 155/* response bits */ 156#define ASLC_ALS_ILLUM_FAILED (1 << 10) 157#define ASLC_BACKLIGHT_FAILED (1 << 12) 158#define ASLC_PFIT_FAILED (1 << 14) 159#define ASLC_PWM_FREQ_FAILED (1 << 16) 160#define ASLC_ROTATION_ANGLES_FAILED (1 << 18) 161#define ASLC_BUTTON_ARRAY_FAILED (1 << 20) 162#define ASLC_CONVERTIBLE_FAILED (1 << 22) 163#define ASLC_DOCKING_FAILED (1 << 24) 164#define ASLC_ISCT_STATE_FAILED (1 << 26) 165 166/* Technology enabled indicator */ 167#define ASLE_TCHE_ALS_EN (1 << 0) 168#define ASLE_TCHE_BLC_EN (1 << 1) 169#define ASLE_TCHE_PFIT_EN (1 << 2) 170#define ASLE_TCHE_PFMB_EN (1 << 3) 171 172/* ASLE backlight brightness to set */ 173#define ASLE_BCLP_VALID (1<<31) 174#define ASLE_BCLP_MSK (~(1<<31)) 175 176/* ASLE panel fitting request */ 177#define ASLE_PFIT_VALID (1<<31) 178#define ASLE_PFIT_CENTER (1<<0) 179#define ASLE_PFIT_STRETCH_TEXT (1<<1) 180#define ASLE_PFIT_STRETCH_GFX (1<<2) 181 182/* PWM frequency and minimum brightness */ 183#define ASLE_PFMB_BRIGHTNESS_MASK (0xff) 184#define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) 185#define ASLE_PFMB_PWM_MASK (0x7ffffe00) 186#define ASLE_PFMB_PWM_VALID (1<<31) 187 188#define ASLE_CBLV_VALID (1<<31) 189 190/* IUER */ 191#define ASLE_IUER_DOCKING (1 << 7) 192#define ASLE_IUER_CONVERTIBLE (1 << 6) 193#define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4) 194#define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3) 195#define ASLE_IUER_VOLUME_UP_BTN (1 << 2) 196#define ASLE_IUER_WINDOWS_BTN (1 << 1) 197#define ASLE_IUER_POWER_BTN (1 << 0) 198 199/* Software System Control Interrupt (SWSCI) */ 200#define SWSCI_SCIC_INDICATOR (1 << 0) 201#define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 202#define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) 203#define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 204#define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) 205#define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 206#define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) 207#define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 208#define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) 209#define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 210 211#define SWSCI_FUNCTION_CODE(main, sub) \ 212 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ 213 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) 214 215/* SWSCI: Get BIOS Data (GBDA) */ 216#define SWSCI_GBDA 4 217#define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) 218#define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) 219#define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) 220#define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) 221#define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) 222#define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) 223#define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) 224 225/* SWSCI: System BIOS Callbacks (SBCB) */ 226#define SWSCI_SBCB 6 227#define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) 228#define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) 229#define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) 230#define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) 231#define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) 232#define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) 233#define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) 234#define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) 235#define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) 236#define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) 237#define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) 238#define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) 239#define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) 240#define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) 241#define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) 242#define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) 243 244#define MAX_DSLP 1500 245 246static int swsci(struct drm_i915_private *dev_priv, 247 u32 function, u32 parm, u32 *parm_out) 248{ 249 struct opregion_swsci *swsci = dev_priv->opregion.swsci; 250 struct pci_dev *pdev = dev_priv->drm.pdev; 251 u32 main_function, sub_function, scic; 252 u16 swsci_val; 253 u32 dslp; 254 255 if (!swsci) 256 return -ENODEV; 257 258 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 259 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 260 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 261 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 262 263 /* Check if we can call the function. See swsci_setup for details. */ 264 if (main_function == SWSCI_SBCB) { 265 if ((dev_priv->opregion.swsci_sbcb_sub_functions & 266 (1 << sub_function)) == 0) 267 return -EINVAL; 268 } else if (main_function == SWSCI_GBDA) { 269 if ((dev_priv->opregion.swsci_gbda_sub_functions & 270 (1 << sub_function)) == 0) 271 return -EINVAL; 272 } 273 274 /* Driver sleep timeout in ms. */ 275 dslp = swsci->dslp; 276 if (!dslp) { 277 /* The spec says 2ms should be the default, but it's too small 278 * for some machines. */ 279 dslp = 50; 280 } else if (dslp > MAX_DSLP) { 281 /* Hey bios, trust must be earned. */ 282 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 283 "using %u ms instead\n", dslp, MAX_DSLP); 284 dslp = MAX_DSLP; 285 } 286 287 /* The spec tells us to do this, but we are the only user... */ 288 scic = swsci->scic; 289 if (scic & SWSCI_SCIC_INDICATOR) { 290 drm_dbg(&dev_priv->drm, "SWSCI request already in progress\n"); 291 return -EBUSY; 292 } 293 294 scic = function | SWSCI_SCIC_INDICATOR; 295 296 swsci->parm = parm; 297 swsci->scic = scic; 298 299 /* Ensure SCI event is selected and event trigger is cleared. */ 300 pci_read_config_word(pdev, SWSCI, &swsci_val); 301 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) { 302 swsci_val |= SWSCI_SCISEL; 303 swsci_val &= ~SWSCI_GSSCIE; 304 pci_write_config_word(pdev, SWSCI, swsci_val); 305 } 306 307 /* Use event trigger to tell bios to check the mail. */ 308 swsci_val |= SWSCI_GSSCIE; 309 pci_write_config_word(pdev, SWSCI, swsci_val); 310 311 /* Poll for the result. */ 312#define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0) 313 if (wait_for(C, dslp)) { 314 drm_dbg(&dev_priv->drm, "SWSCI request timed out\n"); 315 return -ETIMEDOUT; 316 } 317 318 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 319 SWSCI_SCIC_EXIT_STATUS_SHIFT; 320 321 /* Note: scic == 0 is an error! */ 322 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 323 drm_dbg(&dev_priv->drm, "SWSCI request error %u\n", scic); 324 return -EIO; 325 } 326 327 if (parm_out) 328 *parm_out = swsci->parm; 329 330 return 0; 331 332#undef C 333} 334 335#define DISPLAY_TYPE_CRT 0 336#define DISPLAY_TYPE_TV 1 337#define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 338#define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 339 340int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 341 bool enable) 342{ 343 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev); 344 u32 parm = 0; 345 u32 type = 0; 346 u32 port; 347 348 /* don't care about old stuff for now */ 349 if (!HAS_DDI(dev_priv)) 350 return 0; 351 352 if (intel_encoder->type == INTEL_OUTPUT_DSI) 353 port = 0; 354 else 355 port = intel_encoder->port; 356 357 if (port == PORT_E) { 358 port = 0; 359 } else { 360 parm |= 1 << port; 361 port++; 362 } 363 364 /* 365 * The port numbering and mapping here is bizarre. The now-obsolete 366 * swsci spec supports ports numbered [0..4]. Port E is handled as a 367 * special case, but port F and beyond are not. The functionality is 368 * supposed to be obsolete for new platforms. Just bail out if the port 369 * number is out of bounds after mapping. 370 */ 371 if (port > 4) { 372 drm_dbg_kms(&dev_priv->drm, 373 "[ENCODER:%d:%s] port %c (index %u) out of bounds for display power state notification\n", 374 intel_encoder->base.base.id, intel_encoder->base.name, 375 port_name(intel_encoder->port), port); 376 return -EINVAL; 377 } 378 379 if (!enable) 380 parm |= 4 << 8; 381 382 switch (intel_encoder->type) { 383 case INTEL_OUTPUT_ANALOG: 384 type = DISPLAY_TYPE_CRT; 385 break; 386 case INTEL_OUTPUT_DDI: 387 case INTEL_OUTPUT_DP: 388 case INTEL_OUTPUT_HDMI: 389 case INTEL_OUTPUT_DP_MST: 390 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 391 break; 392 case INTEL_OUTPUT_EDP: 393 case INTEL_OUTPUT_DSI: 394 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 395 break; 396 default: 397 drm_WARN_ONCE(&dev_priv->drm, 1, 398 "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 408static 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 419int 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 436static 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_dbg(&dev_priv->drm, "bclp = 0x%08x\n", bclp); 444 445 if (acpi_video_get_backlight_type() == acpi_backlight_native) { 446 drm_dbg_kms(&dev_priv->drm, 447 "opregion backlight request ignored\n"); 448 return 0; 449 } 450 451 if (!(bclp & ASLE_BCLP_VALID)) 452 return ASLC_BACKLIGHT_FAILED; 453 454 bclp &= ASLE_BCLP_MSK; 455 if (bclp > 255) 456 return ASLC_BACKLIGHT_FAILED; 457 458 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 459 460 /* 461 * Update backlight on all connectors that support backlight (usually 462 * only one). 463 */ 464 drm_dbg_kms(&dev_priv->drm, "updating opregion backlight %d/255\n", 465 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->base.state, 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 478static 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_dbg(&dev_priv->drm, "Illum is not supported\n"); 483 return ASLC_ALS_ILLUM_FAILED; 484} 485 486static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb) 487{ 488 drm_dbg(&dev_priv->drm, "PWM freq is not supported\n"); 489 return ASLC_PWM_FREQ_FAILED; 490} 491 492static 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_dbg(&dev_priv->drm, "Pfit is not supported\n"); 497 return ASLC_PFIT_FAILED; 498} 499 500static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot) 501{ 502 drm_dbg(&dev_priv->drm, "SROT is not supported\n"); 503 return ASLC_ROTATION_ANGLES_FAILED; 504} 505 506static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer) 507{ 508 if (!iuer) 509 drm_dbg(&dev_priv->drm, 510 "Button array event is not supported (nothing)\n"); 511 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 512 drm_dbg(&dev_priv->drm, 513 "Button array event is not supported (rotation lock)\n"); 514 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 515 drm_dbg(&dev_priv->drm, 516 "Button array event is not supported (volume down)\n"); 517 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 518 drm_dbg(&dev_priv->drm, 519 "Button array event is not supported (volume up)\n"); 520 if (iuer & ASLE_IUER_WINDOWS_BTN) 521 drm_dbg(&dev_priv->drm, 522 "Button array event is not supported (windows)\n"); 523 if (iuer & ASLE_IUER_POWER_BTN) 524 drm_dbg(&dev_priv->drm, 525 "Button array event is not supported (power)\n"); 526 527 return ASLC_BUTTON_ARRAY_FAILED; 528} 529 530static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer) 531{ 532 if (iuer & ASLE_IUER_CONVERTIBLE) 533 drm_dbg(&dev_priv->drm, 534 "Convertible is not supported (clamshell)\n"); 535 else 536 drm_dbg(&dev_priv->drm, 537 "Convertible is not supported (slate)\n"); 538 539 return ASLC_CONVERTIBLE_FAILED; 540} 541 542static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer) 543{ 544 if (iuer & ASLE_IUER_DOCKING) 545 drm_dbg(&dev_priv->drm, "Docking is not supported (docked)\n"); 546 else 547 drm_dbg(&dev_priv->drm, 548 "Docking is not supported (undocked)\n"); 549 550 return ASLC_DOCKING_FAILED; 551} 552 553static u32 asle_isct_state(struct drm_i915_private *dev_priv) 554{ 555 drm_dbg(&dev_priv->drm, "ISCT is not supported\n"); 556 return ASLC_ISCT_STATE_FAILED; 557} 558 559static void asle_work(struct work_struct *work) 560{ 561 struct intel_opregion *opregion = 562 container_of(work, struct intel_opregion, asle_work); 563 struct drm_i915_private *dev_priv = 564 container_of(opregion, struct drm_i915_private, opregion); 565 struct opregion_asle *asle = dev_priv->opregion.asle; 566 u32 aslc_stat = 0; 567 u32 aslc_req; 568 569 if (!asle) 570 return; 571 572 aslc_req = asle->aslc; 573 574 if (!(aslc_req & ASLC_REQ_MSK)) { 575 drm_dbg(&dev_priv->drm, 576 "No request on ASLC interrupt 0x%08x\n", aslc_req); 577 return; 578 } 579 580 if (aslc_req & ASLC_SET_ALS_ILLUM) 581 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi); 582 583 if (aslc_req & ASLC_SET_BACKLIGHT) 584 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp); 585 586 if (aslc_req & ASLC_SET_PFIT) 587 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit); 588 589 if (aslc_req & ASLC_SET_PWM_FREQ) 590 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb); 591 592 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 593 aslc_stat |= asle_set_supported_rotation_angles(dev_priv, 594 asle->srot); 595 596 if (aslc_req & ASLC_BUTTON_ARRAY) 597 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer); 598 599 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 600 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer); 601 602 if (aslc_req & ASLC_DOCKING_INDICATOR) 603 aslc_stat |= asle_set_docking(dev_priv, asle->iuer); 604 605 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 606 aslc_stat |= asle_isct_state(dev_priv); 607 608 asle->aslc = aslc_stat; 609} 610 611void intel_opregion_asle_intr(struct drm_i915_private *dev_priv) 612{ 613 if (dev_priv->opregion.asle) 614 schedule_work(&dev_priv->opregion.asle_work); 615} 616 617#define ACPI_EV_DISPLAY_SWITCH (1<<0) 618#define ACPI_EV_LID (1<<1) 619#define ACPI_EV_DOCK (1<<2) 620 621/* 622 * The only video events relevant to opregion are 0x80. These indicate either a 623 * docking event, lid switch or display switch request. In Linux, these are 624 * handled by the dock, button and video drivers. 625 */ 626static int intel_opregion_video_event(struct notifier_block *nb, 627 unsigned long val, void *data) 628{ 629 struct intel_opregion *opregion = container_of(nb, struct intel_opregion, 630 acpi_notifier); 631 struct acpi_bus_event *event = data; 632 struct opregion_acpi *acpi; 633 int ret = NOTIFY_OK; 634 635 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 636 return NOTIFY_DONE; 637 638 acpi = opregion->acpi; 639 640 if (event->type == 0x80 && ((acpi->cevt & 1) == 0)) 641 ret = NOTIFY_BAD; 642 643 acpi->csts = 0; 644 645 return ret; 646} 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 654static 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 668static void intel_didl_outputs(struct drm_i915_private *dev_priv) 669{ 670 struct intel_opregion *opregion = &dev_priv->opregion; 671 struct intel_connector *connector; 672 struct drm_connector_list_iter conn_iter; 673 int i = 0, max_outputs; 674 675 /* 676 * In theory, did2, the extended didl, gets added at opregion version 677 * 3.0. In practice, however, we're supposed to set it for earlier 678 * versions as well, since a BIOS that doesn't understand did2 should 679 * not look at it anyway. Use a variable so we can tweak this if a need 680 * arises later. 681 */ 682 max_outputs = ARRAY_SIZE(opregion->acpi->didl) + 683 ARRAY_SIZE(opregion->acpi->did2); 684 685 intel_acpi_device_id_update(dev_priv); 686 687 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 688 for_each_intel_connector_iter(connector, &conn_iter) { 689 if (i < max_outputs) 690 set_did(opregion, i, connector->acpi_device_id); 691 i++; 692 } 693 drm_connector_list_iter_end(&conn_iter); 694 695 drm_dbg_kms(&dev_priv->drm, "%d outputs detected\n", i); 696 697 if (i > max_outputs) 698 drm_err(&dev_priv->drm, 699 "More than %d outputs in connector list\n", 700 max_outputs); 701 702 /* If fewer than max outputs, the list must be null terminated */ 703 if (i < max_outputs) 704 set_did(opregion, i, 0); 705} 706 707static void intel_setup_cadls(struct drm_i915_private *dev_priv) 708{ 709 struct intel_opregion *opregion = &dev_priv->opregion; 710 struct intel_connector *connector; 711 struct drm_connector_list_iter conn_iter; 712 int i = 0; 713 714 /* 715 * Initialize the CADL field from the connector device ids. This is 716 * essentially the same as copying from the DIDL. Technically, this is 717 * not always correct as display outputs may exist, but not active. This 718 * initialization is necessary for some Clevo laptops that check this 719 * field before processing the brightness and display switching hotkeys. 720 * 721 * Note that internal panels should be at the front of the connector 722 * list already, ensuring they're not left out. 723 */ 724 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 725 for_each_intel_connector_iter(connector, &conn_iter) { 726 if (i >= ARRAY_SIZE(opregion->acpi->cadl)) 727 break; 728 opregion->acpi->cadl[i++] = connector->acpi_device_id; 729 } 730 drm_connector_list_iter_end(&conn_iter); 731 732 /* If fewer than 8 active devices, the list must be null terminated */ 733 if (i < ARRAY_SIZE(opregion->acpi->cadl)) 734 opregion->acpi->cadl[i] = 0; 735} 736 737static void swsci_setup(struct drm_i915_private *dev_priv) 738{ 739 struct intel_opregion *opregion = &dev_priv->opregion; 740 bool requested_callbacks = false; 741 u32 tmp; 742 743 /* Sub-function code 0 is okay, let's allow them. */ 744 opregion->swsci_gbda_sub_functions = 1; 745 opregion->swsci_sbcb_sub_functions = 1; 746 747 /* We use GBDA to ask for supported GBDA calls. */ 748 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 749 /* make the bits match the sub-function codes */ 750 tmp <<= 1; 751 opregion->swsci_gbda_sub_functions |= tmp; 752 } 753 754 /* 755 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 756 * must not call interfaces that are not specifically requested by the 757 * bios. 758 */ 759 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 760 /* here, the bits already match sub-function codes */ 761 opregion->swsci_sbcb_sub_functions |= tmp; 762 requested_callbacks = true; 763 } 764 765 /* 766 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 767 * the callback is _requested_. But we still can't call interfaces that 768 * are not requested. 769 */ 770 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 771 /* make the bits match the sub-function codes */ 772 u32 low = tmp & 0x7ff; 773 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 774 tmp = (high << 4) | (low << 1) | 1; 775 776 /* best guess what to do with supported wrt requested */ 777 if (requested_callbacks) { 778 u32 req = opregion->swsci_sbcb_sub_functions; 779 if ((req & tmp) != req) 780 drm_dbg(&dev_priv->drm, 781 "SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", 782 req, tmp); 783 /* XXX: for now, trust the requested callbacks */ 784 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 785 } else { 786 opregion->swsci_sbcb_sub_functions |= tmp; 787 } 788 } 789 790 drm_dbg(&dev_priv->drm, 791 "SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 792 opregion->swsci_gbda_sub_functions, 793 opregion->swsci_sbcb_sub_functions); 794} 795 796static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) 797{ 798 DRM_DEBUG_KMS("Falling back to manually reading VBT from " 799 "VBIOS ROM for %s\n", id->ident); 800 return 1; 801} 802 803static const struct dmi_system_id intel_no_opregion_vbt[] = { 804 { 805 .callback = intel_no_opregion_vbt_callback, 806 .ident = "ThinkCentre A57", 807 .matches = { 808 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 809 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), 810 }, 811 }, 812 { } 813}; 814 815static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv) 816{ 817 struct intel_opregion *opregion = &dev_priv->opregion; 818 const struct firmware *fw = NULL; 819 const char *name = dev_priv->params.vbt_firmware; 820 int ret; 821 822 if (!name || !*name) 823 return -ENOENT; 824 825 ret = request_firmware(&fw, name, &dev_priv->drm.pdev->dev); 826 if (ret) { 827 drm_err(&dev_priv->drm, 828 "Requesting VBT firmware \"%s\" failed (%d)\n", 829 name, ret); 830 return ret; 831 } 832 833 if (intel_bios_is_valid_vbt(fw->data, fw->size)) { 834 opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL); 835 if (opregion->vbt_firmware) { 836 drm_dbg_kms(&dev_priv->drm, 837 "Found valid VBT firmware \"%s\"\n", name); 838 opregion->vbt = opregion->vbt_firmware; 839 opregion->vbt_size = fw->size; 840 ret = 0; 841 } else { 842 ret = -ENOMEM; 843 } 844 } else { 845 drm_dbg_kms(&dev_priv->drm, "Invalid VBT firmware \"%s\"\n", 846 name); 847 ret = -EINVAL; 848 } 849 850 release_firmware(fw); 851 852 return ret; 853} 854 855int intel_opregion_setup(struct drm_i915_private *dev_priv) 856{ 857 struct intel_opregion *opregion = &dev_priv->opregion; 858 struct pci_dev *pdev = dev_priv->drm.pdev; 859 u32 asls, mboxes; 860 char buf[sizeof(OPREGION_SIGNATURE)]; 861 int err = 0; 862 void *base; 863 const void *vbt; 864 u32 vbt_size; 865 866 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100); 867 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100); 868 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100); 869 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100); 870 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400); 871 872 pci_read_config_dword(pdev, ASLS, &asls); 873 drm_dbg(&dev_priv->drm, "graphic opregion physical addr: 0x%x\n", 874 asls); 875 if (asls == 0) { 876 drm_dbg(&dev_priv->drm, "ACPI OpRegion not supported!\n"); 877 return -ENOTSUPP; 878 } 879 880 INIT_WORK(&opregion->asle_work, asle_work); 881 882 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB); 883 if (!base) 884 return -ENOMEM; 885 886 memcpy(buf, base, sizeof(buf)); 887 888 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 889 drm_dbg(&dev_priv->drm, "opregion signature mismatch\n"); 890 err = -EINVAL; 891 goto err_out; 892 } 893 opregion->header = base; 894 opregion->lid_state = base + ACPI_CLID; 895 896 drm_dbg(&dev_priv->drm, "ACPI OpRegion version %u.%u.%u\n", 897 opregion->header->over.major, 898 opregion->header->over.minor, 899 opregion->header->over.revision); 900 901 mboxes = opregion->header->mboxes; 902 if (mboxes & MBOX_ACPI) { 903 drm_dbg(&dev_priv->drm, "Public ACPI methods supported\n"); 904 opregion->acpi = base + OPREGION_ACPI_OFFSET; 905 /* 906 * Indicate we handle monitor hotplug events ourselves so we do 907 * not need ACPI notifications for them. Disabling these avoids 908 * triggering the AML code doing the notifation, which may be 909 * broken as Windows also seems to disable these. 910 */ 911 opregion->acpi->chpd = 1; 912 } 913 914 if (mboxes & MBOX_SWSCI) { 915 drm_dbg(&dev_priv->drm, "SWSCI supported\n"); 916 opregion->swsci = base + OPREGION_SWSCI_OFFSET; 917 swsci_setup(dev_priv); 918 } 919 920 if (mboxes & MBOX_ASLE) { 921 drm_dbg(&dev_priv->drm, "ASLE supported\n"); 922 opregion->asle = base + OPREGION_ASLE_OFFSET; 923 924 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 925 } 926 927 if (mboxes & MBOX_ASLE_EXT) 928 drm_dbg(&dev_priv->drm, "ASLE extension supported\n"); 929 930 if (intel_load_vbt_firmware(dev_priv) == 0) 931 goto out; 932 933 if (dmi_check_system(intel_no_opregion_vbt)) 934 goto out; 935 936 if (opregion->header->over.major >= 2 && opregion->asle && 937 opregion->asle->rvda && opregion->asle->rvds) { 938 resource_size_t rvda = opregion->asle->rvda; 939 940 /* 941 * opregion 2.0: rvda is the physical VBT address. 942 * 943 * opregion 2.1+: rvda is unsigned, relative offset from 944 * opregion base, and should never point within opregion. 945 */ 946 if (opregion->header->over.major > 2 || 947 opregion->header->over.minor >= 1) { 948 drm_WARN_ON(&dev_priv->drm, rvda < OPREGION_SIZE); 949 950 rvda += asls; 951 } 952 953 opregion->rvda = memremap(rvda, opregion->asle->rvds, 954 MEMREMAP_WB); 955 956 vbt = opregion->rvda; 957 vbt_size = opregion->asle->rvds; 958 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 959 drm_dbg_kms(&dev_priv->drm, 960 "Found valid VBT in ACPI OpRegion (RVDA)\n"); 961 opregion->vbt = vbt; 962 opregion->vbt_size = vbt_size; 963 goto out; 964 } else { 965 drm_dbg_kms(&dev_priv->drm, 966 "Invalid VBT in ACPI OpRegion (RVDA)\n"); 967 memunmap(opregion->rvda); 968 opregion->rvda = NULL; 969 } 970 } 971 972 vbt = base + OPREGION_VBT_OFFSET; 973 /* 974 * The VBT specification says that if the ASLE ext mailbox is not used 975 * its area is reserved, but on some CHT boards the VBT extends into the 976 * ASLE ext area. Allow this even though it is against the spec, so we 977 * do not end up rejecting the VBT on those boards (and end up not 978 * finding the LCD panel because of this). 979 */ 980 vbt_size = (mboxes & MBOX_ASLE_EXT) ? 981 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE; 982 vbt_size -= OPREGION_VBT_OFFSET; 983 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 984 drm_dbg_kms(&dev_priv->drm, 985 "Found valid VBT in ACPI OpRegion (Mailbox #4)\n"); 986 opregion->vbt = vbt; 987 opregion->vbt_size = vbt_size; 988 } else { 989 drm_dbg_kms(&dev_priv->drm, 990 "Invalid VBT in ACPI OpRegion (Mailbox #4)\n"); 991 } 992 993out: 994 return 0; 995 996err_out: 997 memunmap(base); 998 return err; 999} 1000 1001static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id) 1002{ 1003 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident); 1004 return 1; 1005} 1006 1007static const struct dmi_system_id intel_use_opregion_panel_type[] = { 1008 { 1009 .callback = intel_use_opregion_panel_type_callback, 1010 .ident = "Conrac GmbH IX45GM2", 1011 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"), 1012 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"), 1013 }, 1014 }, 1015 { } 1016}; 1017 1018int 1019intel_opregion_get_panel_type(struct drm_i915_private *dev_priv) 1020{ 1021 u32 panel_details; 1022 int ret; 1023 1024 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details); 1025 if (ret) { 1026 drm_dbg_kms(&dev_priv->drm, 1027 "Failed to get panel details from OpRegion (%d)\n", 1028 ret); 1029 return ret; 1030 } 1031 1032 ret = (panel_details >> 8) & 0xff; 1033 if (ret > 0x10) { 1034 drm_dbg_kms(&dev_priv->drm, 1035 "Invalid OpRegion panel type 0x%x\n", ret); 1036 return -EINVAL; 1037 } 1038 1039 /* fall back to VBT panel type? */ 1040 if (ret == 0x0) { 1041 drm_dbg_kms(&dev_priv->drm, "No panel type in OpRegion\n"); 1042 return -ENODEV; 1043 } 1044 1045 /* 1046 * So far we know that some machined must use it, others must not use it. 1047 * There doesn't seem to be any way to determine which way to go, except 1048 * via a quirk list :( 1049 */ 1050 if (!dmi_check_system(intel_use_opregion_panel_type)) { 1051 drm_dbg_kms(&dev_priv->drm, 1052 "Ignoring OpRegion panel type (%d)\n", ret - 1); 1053 return -ENODEV; 1054 } 1055 1056 return ret - 1; 1057} 1058 1059void intel_opregion_register(struct drm_i915_private *i915) 1060{ 1061 struct intel_opregion *opregion = &i915->opregion; 1062 1063 if (!opregion->header) 1064 return; 1065 1066 if (opregion->acpi) { 1067 opregion->acpi_notifier.notifier_call = 1068 intel_opregion_video_event; 1069 register_acpi_notifier(&opregion->acpi_notifier); 1070 } 1071 1072 intel_opregion_resume(i915); 1073} 1074 1075void intel_opregion_resume(struct drm_i915_private *i915) 1076{ 1077 struct intel_opregion *opregion = &i915->opregion; 1078 1079 if (!opregion->header) 1080 return; 1081 1082 if (opregion->acpi) { 1083 intel_didl_outputs(i915); 1084 intel_setup_cadls(i915); 1085 1086 /* 1087 * Notify BIOS we are ready to handle ACPI video ext notifs. 1088 * Right now, all the events are handled by the ACPI video 1089 * module. We don't actually need to do anything with them. 1090 */ 1091 opregion->acpi->csts = 0; 1092 opregion->acpi->drdy = 1; 1093 } 1094 1095 if (opregion->asle) { 1096 opregion->asle->tche = ASLE_TCHE_BLC_EN; 1097 opregion->asle->ardy = ASLE_ARDY_READY; 1098 } 1099 1100 intel_opregion_notify_adapter(i915, PCI_D0); 1101} 1102 1103void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state) 1104{ 1105 struct intel_opregion *opregion = &i915->opregion; 1106 1107 if (!opregion->header) 1108 return; 1109 1110 intel_opregion_notify_adapter(i915, state); 1111 1112 if (opregion->asle) 1113 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 1114 1115 cancel_work_sync(&i915->opregion.asle_work); 1116 1117 if (opregion->acpi) 1118 opregion->acpi->drdy = 0; 1119} 1120 1121void intel_opregion_unregister(struct drm_i915_private *i915) 1122{ 1123 struct intel_opregion *opregion = &i915->opregion; 1124 1125 intel_opregion_suspend(i915, PCI_D1); 1126 1127 if (!opregion->header) 1128 return; 1129 1130 if (opregion->acpi_notifier.notifier_call) { 1131 unregister_acpi_notifier(&opregion->acpi_notifier); 1132 opregion->acpi_notifier.notifier_call = NULL; 1133 } 1134 1135 /* just clear all opregion memory pointers now */ 1136 memunmap(opregion->header); 1137 if (opregion->rvda) { 1138 memunmap(opregion->rvda); 1139 opregion->rvda = NULL; 1140 } 1141 if (opregion->vbt_firmware) { 1142 kfree(opregion->vbt_firmware); 1143 opregion->vbt_firmware = NULL; 1144 } 1145 opregion->header = NULL; 1146 opregion->acpi = NULL; 1147 opregion->swsci = NULL; 1148 opregion->asle = NULL; 1149 opregion->vbt = NULL; 1150 opregion->lid_state = NULL; 1151} 1152