1 /* $NetBSD: intel_opregion.c,v 1.6 2022/02/27 21:22:01 riastradh Exp $ */ 2 3 /* 4 * Copyright 2008 Intel Corporation <hong.liu (at) intel.com> 5 * Copyright 2008 Red Hat <mjg (at) redhat.com> 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining 8 * a copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sub license, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the 16 * next paragraph) shall be included in all copies or substantial 17 * portions of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 22 * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE 23 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 24 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 25 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 26 * SOFTWARE. 27 * 28 */ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: intel_opregion.c,v 1.6 2022/02/27 21:22:01 riastradh Exp $"); 32 33 #ifdef __NetBSD__ 34 #include <dev/acpi/acpi_display.h> 35 #endif 36 37 #include <linux/acpi.h> 38 #include <linux/dmi.h> 39 #include <linux/firmware.h> 40 #include <acpi/video.h> 41 42 #include <drm/i915_drm.h> 43 44 #include "display/intel_panel.h" 45 46 #include "i915_drv.h" 47 #include "intel_display_types.h" 48 #include "intel_opregion.h" 49 50 #define OPREGION_HEADER_OFFSET 0 51 #define OPREGION_ACPI_OFFSET 0x100 52 #define ACPI_CLID 0x01ac /* current lid state indicator */ 53 #define ACPI_CDCK 0x01b0 /* current docking state indicator */ 54 #define OPREGION_SWSCI_OFFSET 0x200 55 #define OPREGION_ASLE_OFFSET 0x300 56 #define OPREGION_VBT_OFFSET 0x400 57 #define OPREGION_ASLE_EXT_OFFSET 0x1C00 58 59 #define OPREGION_SIGNATURE "IntelGraphicsMem" 60 #define MBOX_ACPI (1<<0) 61 #define MBOX_SWSCI (1<<1) 62 #define MBOX_ASLE (1<<2) 63 #define MBOX_ASLE_EXT (1<<4) 64 65 struct opregion_header { 66 u8 signature[16]; 67 u32 size; 68 struct { 69 u8 rsvd; 70 u8 revision; 71 u8 minor; 72 u8 major; 73 } __packed over; 74 u8 bios_ver[32]; 75 u8 vbios_ver[16]; 76 u8 driver_ver[16]; 77 u32 mboxes; 78 u32 driver_model; 79 u32 pcon; 80 u8 dver[32]; 81 u8 rsvd[124]; 82 } __packed; 83 84 /* OpRegion mailbox #1: public ACPI methods */ 85 struct opregion_acpi { 86 u32 drdy; /* driver readiness */ 87 u32 csts; /* notification status */ 88 u32 cevt; /* current event */ 89 u8 rsvd1[20]; 90 u32 didl[8]; /* supported display devices ID list */ 91 u32 cpdl[8]; /* currently presented display list */ 92 u32 cadl[8]; /* currently active display list */ 93 u32 nadl[8]; /* next active devices list */ 94 u32 aslp; /* ASL sleep time-out */ 95 u32 tidx; /* toggle table index */ 96 u32 chpd; /* current hotplug enable indicator */ 97 u32 clid; /* current lid state*/ 98 u32 cdck; /* current docking state */ 99 u32 sxsw; /* Sx state resume */ 100 u32 evts; /* ASL supported events */ 101 u32 cnot; /* current OS notification */ 102 u32 nrdy; /* driver status */ 103 u32 did2[7]; /* extended supported display devices ID list */ 104 u32 cpd2[7]; /* extended attached display devices list */ 105 u8 rsvd2[4]; 106 } __packed; 107 108 /* OpRegion mailbox #2: SWSCI */ 109 struct opregion_swsci { 110 u32 scic; /* SWSCI command|status|data */ 111 u32 parm; /* command parameters */ 112 u32 dslp; /* driver sleep time-out */ 113 u8 rsvd[244]; 114 } __packed; 115 116 /* OpRegion mailbox #3: ASLE */ 117 struct opregion_asle { 118 u32 ardy; /* driver readiness */ 119 u32 aslc; /* ASLE interrupt command */ 120 u32 tche; /* technology enabled indicator */ 121 u32 alsi; /* current ALS illuminance reading */ 122 u32 bclp; /* backlight brightness to set */ 123 u32 pfit; /* panel fitting state */ 124 u32 cblv; /* current brightness level */ 125 u16 bclm[20]; /* backlight level duty cycle mapping table */ 126 u32 cpfm; /* current panel fitting mode */ 127 u32 epfm; /* enabled panel fitting modes */ 128 u8 plut[74]; /* panel LUT and identifier */ 129 u32 pfmb; /* PWM freq and min brightness */ 130 u32 cddv; /* color correction default values */ 131 u32 pcft; /* power conservation features */ 132 u32 srot; /* supported rotation angles */ 133 u32 iuer; /* IUER events */ 134 u64 fdss; 135 u32 fdsp; 136 u32 stat; 137 u64 rvda; /* Physical (2.0) or relative from opregion (2.1+) 138 * address of raw VBT data. */ 139 u32 rvds; /* Size of raw vbt data */ 140 u8 rsvd[58]; 141 } __packed; 142 143 /* OpRegion mailbox #5: ASLE ext */ 144 struct opregion_asle_ext { 145 u32 phed; /* Panel Header */ 146 u8 bddc[256]; /* Panel EDID */ 147 u8 rsvd[764]; 148 } __packed; 149 150 /* Driver readiness indicator */ 151 #define ASLE_ARDY_READY (1 << 0) 152 #define ASLE_ARDY_NOT_READY (0 << 0) 153 154 /* ASLE Interrupt Command (ASLC) bits */ 155 #define ASLC_SET_ALS_ILLUM (1 << 0) 156 #define ASLC_SET_BACKLIGHT (1 << 1) 157 #define ASLC_SET_PFIT (1 << 2) 158 #define ASLC_SET_PWM_FREQ (1 << 3) 159 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4) 160 #define ASLC_BUTTON_ARRAY (1 << 5) 161 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6) 162 #define ASLC_DOCKING_INDICATOR (1 << 7) 163 #define ASLC_ISCT_STATE_CHANGE (1 << 8) 164 #define ASLC_REQ_MSK 0x1ff 165 /* response bits */ 166 #define ASLC_ALS_ILLUM_FAILED (1 << 10) 167 #define ASLC_BACKLIGHT_FAILED (1 << 12) 168 #define ASLC_PFIT_FAILED (1 << 14) 169 #define ASLC_PWM_FREQ_FAILED (1 << 16) 170 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18) 171 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20) 172 #define ASLC_CONVERTIBLE_FAILED (1 << 22) 173 #define ASLC_DOCKING_FAILED (1 << 24) 174 #define ASLC_ISCT_STATE_FAILED (1 << 26) 175 176 /* Technology enabled indicator */ 177 #define ASLE_TCHE_ALS_EN (1 << 0) 178 #define ASLE_TCHE_BLC_EN (1 << 1) 179 #define ASLE_TCHE_PFIT_EN (1 << 2) 180 #define ASLE_TCHE_PFMB_EN (1 << 3) 181 182 /* ASLE backlight brightness to set */ 183 #define ASLE_BCLP_VALID (1<<31) 184 #define ASLE_BCLP_MSK (~(1<<31)) 185 186 /* ASLE panel fitting request */ 187 #define ASLE_PFIT_VALID (1<<31) 188 #define ASLE_PFIT_CENTER (1<<0) 189 #define ASLE_PFIT_STRETCH_TEXT (1<<1) 190 #define ASLE_PFIT_STRETCH_GFX (1<<2) 191 192 /* PWM frequency and minimum brightness */ 193 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) 194 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) 195 #define ASLE_PFMB_PWM_MASK (0x7ffffe00) 196 #define ASLE_PFMB_PWM_VALID (1<<31) 197 198 #define ASLE_CBLV_VALID (1<<31) 199 200 /* IUER */ 201 #define ASLE_IUER_DOCKING (1 << 7) 202 #define ASLE_IUER_CONVERTIBLE (1 << 6) 203 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4) 204 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3) 205 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2) 206 #define ASLE_IUER_WINDOWS_BTN (1 << 1) 207 #define ASLE_IUER_POWER_BTN (1 << 0) 208 209 /* Software System Control Interrupt (SWSCI) */ 210 #define SWSCI_SCIC_INDICATOR (1 << 0) 211 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 212 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) 213 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 214 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) 215 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 216 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) 217 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 218 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) 219 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 220 221 #define SWSCI_FUNCTION_CODE(main, sub) \ 222 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ 223 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) 224 225 /* SWSCI: Get BIOS Data (GBDA) */ 226 #define SWSCI_GBDA 4 227 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) 228 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) 229 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) 230 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) 231 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) 232 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) 233 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) 234 235 /* SWSCI: System BIOS Callbacks (SBCB) */ 236 #define SWSCI_SBCB 6 237 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) 238 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) 239 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) 240 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) 241 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) 242 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) 243 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) 244 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) 245 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) 246 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) 247 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) 248 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) 249 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) 250 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) 251 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) 252 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) 253 254 /* 255 * ACPI Specification, Revision 5.0, Appendix B.3.2 _DOD (Enumerate All Devices 256 * Attached to the Display Adapter). 257 */ 258 #define ACPI_DISPLAY_INDEX_SHIFT 0 259 #define ACPI_DISPLAY_INDEX_MASK (0xf << 0) 260 #define ACPI_DISPLAY_PORT_ATTACHMENT_SHIFT 4 261 #define ACPI_DISPLAY_PORT_ATTACHMENT_MASK (0xf << 4) 262 #define ACPI_DISPLAY_TYPE_SHIFT 8 263 #define ACPI_DISPLAY_TYPE_MASK (0xf << 8) 264 #define ACPI_DISPLAY_TYPE_OTHER (0 << 8) 265 #define ACPI_DISPLAY_TYPE_VGA (1 << 8) 266 #define ACPI_DISPLAY_TYPE_TV (2 << 8) 267 #define ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL (3 << 8) 268 #define ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL (4 << 8) 269 #define ACPI_VENDOR_SPECIFIC_SHIFT 12 270 #define ACPI_VENDOR_SPECIFIC_MASK (0xf << 12) 271 #define ACPI_BIOS_CAN_DETECT (1 << 16) 272 #define ACPI_DEPENDS_ON_VGA (1 << 17) 273 #define ACPI_PIPE_ID_SHIFT 18 274 #define ACPI_PIPE_ID_MASK (7 << 18) 275 #define ACPI_DEVICE_ID_SCHEME (1 << 31) 276 277 #define MAX_DSLP 1500 278 279 static int swsci(struct drm_i915_private *dev_priv, 280 u32 function, u32 parm, u32 *parm_out) 281 { 282 struct opregion_swsci *swsci = dev_priv->opregion.swsci; 283 struct pci_dev *pdev = dev_priv->drm.pdev; 284 u32 main_function, sub_function, scic; 285 u16 swsci_val; 286 u32 dslp; 287 288 if (!swsci) 289 return -ENODEV; 290 291 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 292 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 293 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 294 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 295 296 /* Check if we can call the function. See swsci_setup for details. */ 297 if (main_function == SWSCI_SBCB) { 298 if ((dev_priv->opregion.swsci_sbcb_sub_functions & 299 (1 << sub_function)) == 0) 300 return -EINVAL; 301 } else if (main_function == SWSCI_GBDA) { 302 if ((dev_priv->opregion.swsci_gbda_sub_functions & 303 (1 << sub_function)) == 0) 304 return -EINVAL; 305 } 306 307 /* Driver sleep timeout in ms. */ 308 dslp = swsci->dslp; 309 if (!dslp) { 310 /* The spec says 2ms should be the default, but it's too small 311 * for some machines. */ 312 dslp = 50; 313 } else if (dslp > MAX_DSLP) { 314 /* Hey bios, trust must be earned. */ 315 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 316 "using %u ms instead\n", dslp, MAX_DSLP); 317 dslp = MAX_DSLP; 318 } 319 320 /* The spec tells us to do this, but we are the only user... */ 321 scic = swsci->scic; 322 if (scic & SWSCI_SCIC_INDICATOR) { 323 DRM_DEBUG_DRIVER("SWSCI request already in progress\n"); 324 return -EBUSY; 325 } 326 327 scic = function | SWSCI_SCIC_INDICATOR; 328 329 swsci->parm = parm; 330 swsci->scic = scic; 331 332 /* Ensure SCI event is selected and event trigger is cleared. */ 333 pci_read_config_word(pdev, SWSCI, &swsci_val); 334 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) { 335 swsci_val |= SWSCI_SCISEL; 336 swsci_val &= ~SWSCI_GSSCIE; 337 pci_write_config_word(pdev, SWSCI, swsci_val); 338 } 339 340 /* Use event trigger to tell bios to check the mail. */ 341 swsci_val |= SWSCI_GSSCIE; 342 pci_write_config_word(pdev, SWSCI, swsci_val); 343 344 /* Poll for the result. */ 345 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0) 346 if (wait_for(C, dslp)) { 347 DRM_DEBUG_DRIVER("SWSCI request timed out\n"); 348 return -ETIMEDOUT; 349 } 350 351 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 352 SWSCI_SCIC_EXIT_STATUS_SHIFT; 353 354 /* Note: scic == 0 is an error! */ 355 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 356 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic); 357 return -EIO; 358 } 359 360 if (parm_out) 361 *parm_out = swsci->parm; 362 363 return 0; 364 365 #undef C 366 } 367 368 #define DISPLAY_TYPE_CRT 0 369 #define DISPLAY_TYPE_TV 1 370 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 371 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 372 373 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 374 bool enable) 375 { 376 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev); 377 u32 parm = 0; 378 u32 type = 0; 379 u32 port; 380 381 /* don't care about old stuff for now */ 382 if (!HAS_DDI(dev_priv)) 383 return 0; 384 385 if (intel_encoder->type == INTEL_OUTPUT_DSI) 386 port = 0; 387 else 388 port = intel_encoder->port; 389 390 if (port == PORT_E) { 391 port = 0; 392 } else { 393 parm |= 1 << port; 394 port++; 395 } 396 397 if (!enable) 398 parm |= 4 << 8; 399 400 switch (intel_encoder->type) { 401 case INTEL_OUTPUT_ANALOG: 402 type = DISPLAY_TYPE_CRT; 403 break; 404 case INTEL_OUTPUT_DDI: 405 case INTEL_OUTPUT_DP: 406 case INTEL_OUTPUT_HDMI: 407 case INTEL_OUTPUT_DP_MST: 408 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 409 break; 410 case INTEL_OUTPUT_EDP: 411 case INTEL_OUTPUT_DSI: 412 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 413 break; 414 default: 415 WARN_ONCE(1, "unsupported intel_encoder type %d\n", 416 intel_encoder->type); 417 return -EINVAL; 418 } 419 420 parm |= type << (16 + port * 3); 421 422 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 423 } 424 425 static const struct { 426 pci_power_t pci_power_state; 427 u32 parm; 428 } power_state_map[] = { 429 { PCI_D0, 0x00 }, 430 { PCI_D1, 0x01 }, 431 { PCI_D2, 0x02 }, 432 { PCI_D3hot, 0x04 }, 433 { PCI_D3cold, 0x04 }, 434 }; 435 436 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv, 437 pci_power_t state) 438 { 439 int i; 440 441 if (!HAS_DDI(dev_priv)) 442 return 0; 443 444 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 445 if (state == power_state_map[i].pci_power_state) 446 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE, 447 power_state_map[i].parm, NULL); 448 } 449 450 return -EINVAL; 451 } 452 453 static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp) 454 { 455 struct intel_connector *connector; 456 struct drm_connector_list_iter conn_iter; 457 struct opregion_asle *asle = dev_priv->opregion.asle; 458 struct drm_device *dev = &dev_priv->drm; 459 460 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); 461 462 #ifndef __NetBSD__ /* XXX backlight */ 463 if (acpi_video_get_backlight_type() == acpi_backlight_native) { 464 DRM_DEBUG_KMS("opregion backlight request ignored\n"); 465 return 0; 466 } 467 #endif 468 469 if (!(bclp & ASLE_BCLP_VALID)) 470 return ASLC_BACKLIGHT_FAILED; 471 472 bclp &= ASLE_BCLP_MSK; 473 if (bclp > 255) 474 return ASLC_BACKLIGHT_FAILED; 475 476 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 477 478 /* 479 * Update backlight on all connectors that support backlight (usually 480 * only one). 481 */ 482 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); 483 drm_connector_list_iter_begin(dev, &conn_iter); 484 for_each_intel_connector_iter(connector, &conn_iter) 485 intel_panel_set_backlight_acpi(connector->base.state, bclp, 255); 486 drm_connector_list_iter_end(&conn_iter); 487 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID; 488 489 drm_modeset_unlock(&dev->mode_config.connection_mutex); 490 491 492 return 0; 493 } 494 495 static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi) 496 { 497 /* alsi is the current ALS reading in lux. 0 indicates below sensor 498 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 499 DRM_DEBUG_DRIVER("Illum is not supported\n"); 500 return ASLC_ALS_ILLUM_FAILED; 501 } 502 503 static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb) 504 { 505 DRM_DEBUG_DRIVER("PWM freq is not supported\n"); 506 return ASLC_PWM_FREQ_FAILED; 507 } 508 509 static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit) 510 { 511 /* Panel fitting is currently controlled by the X code, so this is a 512 noop until modesetting support works fully */ 513 DRM_DEBUG_DRIVER("Pfit is not supported\n"); 514 return ASLC_PFIT_FAILED; 515 } 516 517 static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot) 518 { 519 DRM_DEBUG_DRIVER("SROT is not supported\n"); 520 return ASLC_ROTATION_ANGLES_FAILED; 521 } 522 523 static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer) 524 { 525 if (!iuer) 526 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n"); 527 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 528 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n"); 529 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 530 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n"); 531 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 532 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n"); 533 if (iuer & ASLE_IUER_WINDOWS_BTN) 534 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n"); 535 if (iuer & ASLE_IUER_POWER_BTN) 536 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n"); 537 538 return ASLC_BUTTON_ARRAY_FAILED; 539 } 540 541 static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer) 542 { 543 if (iuer & ASLE_IUER_CONVERTIBLE) 544 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n"); 545 else 546 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n"); 547 548 return ASLC_CONVERTIBLE_FAILED; 549 } 550 551 static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer) 552 { 553 if (iuer & ASLE_IUER_DOCKING) 554 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n"); 555 else 556 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n"); 557 558 return ASLC_DOCKING_FAILED; 559 } 560 561 static u32 asle_isct_state(struct drm_i915_private *dev_priv) 562 { 563 DRM_DEBUG_DRIVER("ISCT is not supported\n"); 564 return ASLC_ISCT_STATE_FAILED; 565 } 566 567 static void asle_work(struct work_struct *work) 568 { 569 struct intel_opregion *opregion = 570 container_of(work, struct intel_opregion, asle_work); 571 struct drm_i915_private *dev_priv = 572 container_of(opregion, struct drm_i915_private, opregion); 573 struct opregion_asle *asle = dev_priv->opregion.asle; 574 u32 aslc_stat = 0; 575 u32 aslc_req; 576 577 if (!asle) 578 return; 579 580 aslc_req = asle->aslc; 581 582 if (!(aslc_req & ASLC_REQ_MSK)) { 583 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n", 584 aslc_req); 585 return; 586 } 587 588 if (aslc_req & ASLC_SET_ALS_ILLUM) 589 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi); 590 591 if (aslc_req & ASLC_SET_BACKLIGHT) 592 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp); 593 594 if (aslc_req & ASLC_SET_PFIT) 595 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit); 596 597 if (aslc_req & ASLC_SET_PWM_FREQ) 598 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb); 599 600 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 601 aslc_stat |= asle_set_supported_rotation_angles(dev_priv, 602 asle->srot); 603 604 if (aslc_req & ASLC_BUTTON_ARRAY) 605 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer); 606 607 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 608 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer); 609 610 if (aslc_req & ASLC_DOCKING_INDICATOR) 611 aslc_stat |= asle_set_docking(dev_priv, asle->iuer); 612 613 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 614 aslc_stat |= asle_isct_state(dev_priv); 615 616 asle->aslc = aslc_stat; 617 } 618 619 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv) 620 { 621 if (dev_priv->opregion.asle) 622 schedule_work(&dev_priv->opregion.asle_work); 623 } 624 625 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 626 #define ACPI_EV_LID (1<<1) 627 #define ACPI_EV_DOCK (1<<2) 628 629 #ifdef __NetBSD__ 630 static void 631 intel_opregion_video_event(ACPI_HANDLE hdl, uint32_t notify, void *cookie) 632 { 633 struct intel_opregion *opregion = cookie; 634 struct opregion_acpi *acpi = opregion->acpi; 635 636 DRM_DEBUG_DRIVER("notify=0x%08x csts=0x%02x cevt=0x%02x\n", notify, 637 acpi->csts, acpi->cevt); 638 639 /* 640 * The firmware sets CSTS to 0x03 `Dispatched (ASL)' before 641 * issuing any graphics notification, and won't issue 642 * additional notifications until the graphics driver sets CSTS 643 * to 0x00 `Success (Driver)' to acknowledge it. 644 */ 645 if (acpi->csts != 0x03) 646 return; 647 acpi->csts = 0; 648 } 649 #else /* !__NetBSD__ */ 650 /* 651 * The only video events relevant to opregion are 0x80. These indicate either a 652 * docking event, lid switch or display switch request. In Linux, these are 653 * handled by the dock, button and video drivers. 654 */ 655 static int intel_opregion_video_event(struct notifier_block *nb, 656 unsigned long val, void *data) 657 { 658 struct intel_opregion *opregion = container_of(nb, struct intel_opregion, 659 acpi_notifier); 660 struct acpi_bus_event *event = data; 661 struct opregion_acpi *acpi; 662 int ret = NOTIFY_OK; 663 664 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 665 return NOTIFY_DONE; 666 667 acpi = opregion->acpi; 668 669 if (event->type == 0x80 && ((acpi->cevt & 1) == 0)) 670 ret = NOTIFY_BAD; 671 672 acpi->csts = 0; 673 674 return ret; 675 } 676 #endif 677 678 /* 679 * Initialise the DIDL field in opregion. This passes a list of devices to 680 * the firmware. Values are defined by section B.4.2 of the ACPI specification 681 * (version 3) 682 */ 683 684 static void set_did(struct intel_opregion *opregion, int i, u32 val) 685 { 686 if (i < ARRAY_SIZE(opregion->acpi->didl)) { 687 opregion->acpi->didl[i] = val; 688 } else { 689 i -= ARRAY_SIZE(opregion->acpi->didl); 690 691 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2))) 692 return; 693 694 opregion->acpi->did2[i] = val; 695 } 696 } 697 698 static u32 acpi_display_type(struct intel_connector *connector) 699 { 700 u32 display_type; 701 702 switch (connector->base.connector_type) { 703 case DRM_MODE_CONNECTOR_VGA: 704 case DRM_MODE_CONNECTOR_DVIA: 705 display_type = ACPI_DISPLAY_TYPE_VGA; 706 break; 707 case DRM_MODE_CONNECTOR_Composite: 708 case DRM_MODE_CONNECTOR_SVIDEO: 709 case DRM_MODE_CONNECTOR_Component: 710 case DRM_MODE_CONNECTOR_9PinDIN: 711 case DRM_MODE_CONNECTOR_TV: 712 display_type = ACPI_DISPLAY_TYPE_TV; 713 break; 714 case DRM_MODE_CONNECTOR_DVII: 715 case DRM_MODE_CONNECTOR_DVID: 716 case DRM_MODE_CONNECTOR_DisplayPort: 717 case DRM_MODE_CONNECTOR_HDMIA: 718 case DRM_MODE_CONNECTOR_HDMIB: 719 display_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL; 720 break; 721 case DRM_MODE_CONNECTOR_LVDS: 722 case DRM_MODE_CONNECTOR_eDP: 723 case DRM_MODE_CONNECTOR_DSI: 724 display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL; 725 break; 726 case DRM_MODE_CONNECTOR_Unknown: 727 case DRM_MODE_CONNECTOR_VIRTUAL: 728 display_type = ACPI_DISPLAY_TYPE_OTHER; 729 break; 730 default: 731 MISSING_CASE(connector->base.connector_type); 732 display_type = ACPI_DISPLAY_TYPE_OTHER; 733 break; 734 } 735 736 return display_type; 737 } 738 739 static void intel_didl_outputs(struct drm_i915_private *dev_priv) 740 { 741 struct intel_opregion *opregion = &dev_priv->opregion; 742 struct intel_connector *connector; 743 struct drm_connector_list_iter conn_iter; 744 int i = 0, max_outputs; 745 int display_index[16] = {}; 746 747 /* 748 * In theory, did2, the extended didl, gets added at opregion version 749 * 3.0. In practice, however, we're supposed to set it for earlier 750 * versions as well, since a BIOS that doesn't understand did2 should 751 * not look at it anyway. Use a variable so we can tweak this if a need 752 * arises later. 753 */ 754 max_outputs = ARRAY_SIZE(opregion->acpi->didl) + 755 ARRAY_SIZE(opregion->acpi->did2); 756 757 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 758 for_each_intel_connector_iter(connector, &conn_iter) { 759 u32 device_id, type; 760 761 device_id = acpi_display_type(connector); 762 763 /* Use display type specific display index. */ 764 type = (device_id & ACPI_DISPLAY_TYPE_MASK) 765 >> ACPI_DISPLAY_TYPE_SHIFT; 766 device_id |= display_index[type]++ << ACPI_DISPLAY_INDEX_SHIFT; 767 768 connector->acpi_device_id = device_id; 769 if (i < max_outputs) 770 set_did(opregion, i, device_id); 771 i++; 772 } 773 drm_connector_list_iter_end(&conn_iter); 774 775 DRM_DEBUG_KMS("%d outputs detected\n", i); 776 777 if (i > max_outputs) 778 DRM_ERROR("More than %d outputs in connector list\n", 779 max_outputs); 780 781 /* If fewer than max outputs, the list must be null terminated */ 782 if (i < max_outputs) 783 set_did(opregion, i, 0); 784 } 785 786 static void intel_setup_cadls(struct drm_i915_private *dev_priv) 787 { 788 struct intel_opregion *opregion = &dev_priv->opregion; 789 struct intel_connector *connector; 790 struct drm_connector_list_iter conn_iter; 791 int i = 0; 792 793 /* 794 * Initialize the CADL field from the connector device ids. This is 795 * essentially the same as copying from the DIDL. Technically, this is 796 * not always correct as display outputs may exist, but not active. This 797 * initialization is necessary for some Clevo laptops that check this 798 * field before processing the brightness and display switching hotkeys. 799 * 800 * Note that internal panels should be at the front of the connector 801 * list already, ensuring they're not left out. 802 */ 803 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); 804 for_each_intel_connector_iter(connector, &conn_iter) { 805 if (i >= ARRAY_SIZE(opregion->acpi->cadl)) 806 break; 807 opregion->acpi->cadl[i++] = connector->acpi_device_id; 808 } 809 drm_connector_list_iter_end(&conn_iter); 810 811 /* If fewer than 8 active devices, the list must be null terminated */ 812 if (i < ARRAY_SIZE(opregion->acpi->cadl)) 813 opregion->acpi->cadl[i] = 0; 814 } 815 816 static void swsci_setup(struct drm_i915_private *dev_priv) 817 { 818 struct intel_opregion *opregion = &dev_priv->opregion; 819 bool requested_callbacks = false; 820 u32 tmp; 821 822 /* Sub-function code 0 is okay, let's allow them. */ 823 opregion->swsci_gbda_sub_functions = 1; 824 opregion->swsci_sbcb_sub_functions = 1; 825 826 /* We use GBDA to ask for supported GBDA calls. */ 827 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 828 /* make the bits match the sub-function codes */ 829 tmp <<= 1; 830 opregion->swsci_gbda_sub_functions |= tmp; 831 } 832 833 /* 834 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 835 * must not call interfaces that are not specifically requested by the 836 * bios. 837 */ 838 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 839 /* here, the bits already match sub-function codes */ 840 opregion->swsci_sbcb_sub_functions |= tmp; 841 requested_callbacks = true; 842 } 843 844 /* 845 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 846 * the callback is _requested_. But we still can't call interfaces that 847 * are not requested. 848 */ 849 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 850 /* make the bits match the sub-function codes */ 851 u32 low = tmp & 0x7ff; 852 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 853 tmp = (high << 4) | (low << 1) | 1; 854 855 /* best guess what to do with supported wrt requested */ 856 if (requested_callbacks) { 857 u32 req = opregion->swsci_sbcb_sub_functions; 858 if ((req & tmp) != req) 859 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp); 860 /* XXX: for now, trust the requested callbacks */ 861 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 862 } else { 863 opregion->swsci_sbcb_sub_functions |= tmp; 864 } 865 } 866 867 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 868 opregion->swsci_gbda_sub_functions, 869 opregion->swsci_sbcb_sub_functions); 870 } 871 872 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) 873 { 874 DRM_DEBUG_KMS("Falling back to manually reading VBT from " 875 "VBIOS ROM for %s\n", id->ident); 876 return 1; 877 } 878 879 static const struct dmi_system_id intel_no_opregion_vbt[] = { 880 { 881 .callback = intel_no_opregion_vbt_callback, 882 .ident = "ThinkCentre A57", 883 .matches = { 884 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 885 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), 886 }, 887 }, 888 { } 889 }; 890 891 static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv) 892 { 893 struct intel_opregion *opregion = &dev_priv->opregion; 894 const struct firmware *fw = NULL; 895 const char *name = i915_modparams.vbt_firmware; 896 int ret; 897 898 if (!name || !*name) 899 return -ENOENT; 900 901 ret = request_firmware(&fw, name, pci_dev_dev(dev_priv->drm.pdev)); 902 if (ret) { 903 DRM_ERROR("Requesting VBT firmware \"%s\" failed (%d)\n", 904 name, ret); 905 return ret; 906 } 907 908 if (intel_bios_is_valid_vbt(fw->data, fw->size)) { 909 opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL); 910 if (opregion->vbt_firmware) { 911 DRM_DEBUG_KMS("Found valid VBT firmware \"%s\"\n", name); 912 opregion->vbt = opregion->vbt_firmware; 913 opregion->vbt_size = fw->size; 914 ret = 0; 915 } else { 916 ret = -ENOMEM; 917 } 918 } else { 919 DRM_DEBUG_KMS("Invalid VBT firmware \"%s\"\n", name); 920 ret = -EINVAL; 921 } 922 923 release_firmware(fw); 924 925 return ret; 926 } 927 928 int intel_opregion_setup(struct drm_i915_private *dev_priv) 929 { 930 struct intel_opregion *opregion = &dev_priv->opregion; 931 struct pci_dev *pdev = dev_priv->drm.pdev; 932 u32 asls, mboxes; 933 char buf[sizeof(OPREGION_SIGNATURE)]; 934 int err = 0; 935 void *base; 936 const void *vbt; 937 u32 vbt_size; 938 939 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100); 940 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100); 941 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100); 942 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100); 943 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400); 944 945 pci_read_config_dword(pdev, ASLS, &asls); 946 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); 947 if (asls == 0) { 948 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); 949 return -ENOTSUPP; 950 } 951 952 INIT_WORK(&opregion->asle_work, asle_work); 953 954 #ifdef __NetBSD__ 955 base = AcpiOsMapMemory(asls, OPREGION_SIZE); 956 #else 957 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB); 958 #endif 959 if (!base) 960 return -ENOMEM; 961 962 memcpy(buf, base, sizeof(buf)); 963 964 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 965 DRM_DEBUG_DRIVER("opregion signature mismatch\n"); 966 err = -EINVAL; 967 goto err_out; 968 } 969 opregion->header = base; 970 opregion->lid_state = base + ACPI_CLID; 971 972 DRM_DEBUG_DRIVER("ACPI OpRegion version %u.%u.%u\n", 973 opregion->header->over.major, 974 opregion->header->over.minor, 975 opregion->header->over.revision); 976 977 mboxes = opregion->header->mboxes; 978 if (mboxes & MBOX_ACPI) { 979 DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); 980 opregion->acpi = base + OPREGION_ACPI_OFFSET; 981 /* 982 * Indicate we handle monitor hotplug events ourselves so we do 983 * not need ACPI notifications for them. Disabling these avoids 984 * triggering the AML code doing the notifation, which may be 985 * broken as Windows also seems to disable these. 986 */ 987 opregion->acpi->chpd = 1; 988 } 989 990 if (mboxes & MBOX_SWSCI) { 991 DRM_DEBUG_DRIVER("SWSCI supported\n"); 992 opregion->swsci = base + OPREGION_SWSCI_OFFSET; 993 swsci_setup(dev_priv); 994 } 995 996 if (mboxes & MBOX_ASLE) { 997 DRM_DEBUG_DRIVER("ASLE supported\n"); 998 opregion->asle = base + OPREGION_ASLE_OFFSET; 999 1000 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 1001 } 1002 1003 if (mboxes & MBOX_ASLE_EXT) 1004 DRM_DEBUG_DRIVER("ASLE extension supported\n"); 1005 1006 if (intel_load_vbt_firmware(dev_priv) == 0) 1007 goto out; 1008 1009 if (dmi_check_system(intel_no_opregion_vbt)) 1010 goto out; 1011 1012 if (opregion->header->over.major >= 2 && opregion->asle && 1013 opregion->asle->rvda && opregion->asle->rvds) { 1014 resource_size_t rvda = opregion->asle->rvda; 1015 1016 /* 1017 * opregion 2.0: rvda is the physical VBT address. 1018 * 1019 * opregion 2.1+: rvda is unsigned, relative offset from 1020 * opregion base, and should never point within opregion. 1021 */ 1022 if (opregion->header->over.major > 2 || 1023 opregion->header->over.minor >= 1) { 1024 WARN_ON(rvda < OPREGION_SIZE); 1025 1026 rvda += asls; 1027 } 1028 1029 #ifdef __NetBSD__ 1030 opregion->rvda = AcpiOsMapMemory(rvda, opregion->asle->rvds); 1031 #else 1032 opregion->rvda = memremap(rvda, opregion->asle->rvds, 1033 MEMREMAP_WB); 1034 #endif 1035 1036 vbt = opregion->rvda; 1037 vbt_size = opregion->asle->rvds; 1038 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 1039 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n"); 1040 opregion->vbt = vbt; 1041 opregion->vbt_size = vbt_size; 1042 goto out; 1043 } else { 1044 DRM_DEBUG_KMS("Invalid VBT in ACPI OpRegion (RVDA)\n"); 1045 #ifdef __NetBSD__ 1046 AcpiOsUnmapMemory(opregion->rvda, 1047 opregion->asle->rvds); 1048 #else 1049 memunmap(opregion->rvda); 1050 #endif 1051 opregion->rvda = NULL; 1052 } 1053 } 1054 1055 vbt = base + OPREGION_VBT_OFFSET; 1056 /* 1057 * The VBT specification says that if the ASLE ext mailbox is not used 1058 * its area is reserved, but on some CHT boards the VBT extends into the 1059 * ASLE ext area. Allow this even though it is against the spec, so we 1060 * do not end up rejecting the VBT on those boards (and end up not 1061 * finding the LCD panel because of this). 1062 */ 1063 vbt_size = (mboxes & MBOX_ASLE_EXT) ? 1064 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE; 1065 vbt_size -= OPREGION_VBT_OFFSET; 1066 if (intel_bios_is_valid_vbt(vbt, vbt_size)) { 1067 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n"); 1068 opregion->vbt = vbt; 1069 opregion->vbt_size = vbt_size; 1070 } else { 1071 DRM_DEBUG_KMS("Invalid VBT in ACPI OpRegion (Mailbox #4)\n"); 1072 } 1073 1074 out: 1075 return 0; 1076 1077 err_out: 1078 #ifdef __NetBSD__ 1079 AcpiOsUnmapMemory(base, OPREGION_SIZE); 1080 #else 1081 memunmap(base); 1082 #endif 1083 return err; 1084 } 1085 1086 static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id) 1087 { 1088 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident); 1089 return 1; 1090 } 1091 1092 static const struct dmi_system_id intel_use_opregion_panel_type[] = { 1093 { 1094 .callback = intel_use_opregion_panel_type_callback, 1095 .ident = "Conrac GmbH IX45GM2", 1096 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"), 1097 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"), 1098 }, 1099 }, 1100 { } 1101 }; 1102 1103 int 1104 intel_opregion_get_panel_type(struct drm_i915_private *dev_priv) 1105 { 1106 u32 panel_details; 1107 int ret; 1108 1109 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details); 1110 if (ret) { 1111 DRM_DEBUG_KMS("Failed to get panel details from OpRegion (%d)\n", 1112 ret); 1113 return ret; 1114 } 1115 1116 ret = (panel_details >> 8) & 0xff; 1117 if (ret > 0x10) { 1118 DRM_DEBUG_KMS("Invalid OpRegion panel type 0x%x\n", ret); 1119 return -EINVAL; 1120 } 1121 1122 /* fall back to VBT panel type? */ 1123 if (ret == 0x0) { 1124 DRM_DEBUG_KMS("No panel type in OpRegion\n"); 1125 return -ENODEV; 1126 } 1127 1128 /* 1129 * So far we know that some machined must use it, others must not use it. 1130 * There doesn't seem to be any way to determine which way to go, except 1131 * via a quirk list :( 1132 */ 1133 if (!dmi_check_system(intel_use_opregion_panel_type)) { 1134 DRM_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1); 1135 return -ENODEV; 1136 } 1137 1138 return ret - 1; 1139 } 1140 1141 void intel_opregion_register(struct drm_i915_private *i915) 1142 { 1143 struct intel_opregion *opregion = &i915->opregion; 1144 1145 if (!opregion->header) 1146 return; 1147 1148 if (opregion->acpi) { 1149 #ifdef __NetBSD__ 1150 opregion->acpi_notifier = 1151 acpidisp_register_notify(intel_opregion_video_event, 1152 opregion); 1153 #else 1154 opregion->acpi_notifier.notifier_call = 1155 intel_opregion_video_event; 1156 register_acpi_notifier(&opregion->acpi_notifier); 1157 #endif 1158 } 1159 1160 intel_opregion_resume(i915); 1161 } 1162 1163 void intel_opregion_resume(struct drm_i915_private *i915) 1164 { 1165 struct intel_opregion *opregion = &i915->opregion; 1166 1167 if (!opregion->header) 1168 return; 1169 1170 if (opregion->acpi) { 1171 intel_didl_outputs(i915); 1172 intel_setup_cadls(i915); 1173 1174 /* 1175 * Notify BIOS we are ready to handle ACPI video ext notifs. 1176 * Right now, all the events are handled by the ACPI video 1177 * module. We don't actually need to do anything with them. 1178 */ 1179 opregion->acpi->csts = 0; 1180 opregion->acpi->drdy = 1; 1181 } 1182 1183 if (opregion->asle) { 1184 opregion->asle->tche = ASLE_TCHE_BLC_EN; 1185 opregion->asle->ardy = ASLE_ARDY_READY; 1186 } 1187 1188 intel_opregion_notify_adapter(i915, PCI_D0); 1189 } 1190 1191 void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state) 1192 { 1193 struct intel_opregion *opregion = &i915->opregion; 1194 1195 if (!opregion->header) 1196 return; 1197 1198 intel_opregion_notify_adapter(i915, state); 1199 1200 if (opregion->asle) 1201 opregion->asle->ardy = ASLE_ARDY_NOT_READY; 1202 1203 cancel_work_sync(&i915->opregion.asle_work); 1204 1205 if (opregion->acpi) 1206 opregion->acpi->drdy = 0; 1207 } 1208 1209 void intel_opregion_unregister(struct drm_i915_private *i915) 1210 { 1211 struct intel_opregion *opregion = &i915->opregion; 1212 1213 intel_opregion_suspend(i915, PCI_D1); 1214 1215 if (!opregion->header) 1216 return; 1217 1218 #ifdef __NetBSD__ 1219 if (opregion->acpi_notifier) { 1220 acpidisp_deregister_notify(opregion->acpi_notifier); 1221 opregion->acpi_notifier = NULL; 1222 } 1223 #else 1224 if (opregion->acpi_notifier.notifier_call) { 1225 unregister_acpi_notifier(&opregion->acpi_notifier); 1226 opregion->acpi_notifier.notifier_call = NULL; 1227 } 1228 #endif 1229 1230 /* just clear all opregion memory pointers now */ 1231 #ifdef __NetBSD__ 1232 size_t rvds = opregion->asle->rvds; 1233 AcpiOsUnmapMemory(opregion->header, OPREGION_SIZE); 1234 #else 1235 memunmap(opregion->header); 1236 #endif 1237 if (opregion->rvda) { 1238 #ifdef __NetBSD__ 1239 AcpiOsUnmapMemory(opregion->rvda, rvds); 1240 #else 1241 memunmap(opregion->rvda); 1242 #endif 1243 opregion->rvda = NULL; 1244 } 1245 if (opregion->vbt_firmware) { 1246 kfree(opregion->vbt_firmware); 1247 opregion->vbt_firmware = NULL; 1248 } 1249 opregion->header = NULL; 1250 opregion->acpi = NULL; 1251 opregion->swsci = NULL; 1252 opregion->asle = NULL; 1253 opregion->vbt = NULL; 1254 opregion->lid_state = NULL; 1255 } 1256
Indexes created Mon Sep 22 13:09:51 GMT 2025