1 /* 2 * Copyright 2008 Intel Corporation <hong.liu@intel.com> 3 * Copyright 2008 Red Hat <mjg@redhat.com> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sub license, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 24 * SOFTWARE. 25 * 26 */ 27 28 #include <drm/drmP.h> 29 #include <drm/i915_drm.h> 30 #include "i915_drv.h" 31 #include "intel_drv.h" 32 33 #include <contrib/dev/acpica/source/include/acpi.h> 34 #include <contrib/dev/acpica/source/include/accommon.h> 35 #include <dev/acpica/acpivar.h> 36 37 #define PCI_ASLE 0xe4 38 #define PCI_ASLS 0xfc 39 #define PCI_SWSCI 0xe8 40 #define PCI_SWSCI_SCISEL (1 << 15) 41 #define PCI_SWSCI_GSSCIE (1 << 0) 42 43 #define OPREGION_HEADER_OFFSET 0 44 #define OPREGION_ACPI_OFFSET 0x100 45 #define ACPI_CLID 0x01ac /* current lid state indicator */ 46 #define ACPI_CDCK 0x01b0 /* current docking state indicator */ 47 #define OPREGION_SWSCI_OFFSET 0x200 48 #define OPREGION_ASLE_OFFSET 0x300 49 #define OPREGION_VBT_OFFSET 0x400 50 51 #define OPREGION_SIGNATURE "IntelGraphicsMem" 52 #define MBOX_ACPI (1<<0) 53 #define MBOX_SWSCI (1<<1) 54 #define MBOX_ASLE (1<<2) 55 56 struct opregion_header { 57 u8 signature[16]; 58 u32 size; 59 u32 opregion_ver; 60 u8 bios_ver[32]; 61 u8 vbios_ver[16]; 62 u8 driver_ver[16]; 63 u32 mboxes; 64 u8 reserved[164]; 65 } __packed; 66 67 /* OpRegion mailbox #1: public ACPI methods */ 68 struct opregion_acpi { 69 u32 drdy; /* driver readiness */ 70 u32 csts; /* notification status */ 71 u32 cevt; /* current event */ 72 u8 rsvd1[20]; 73 u32 didl[8]; /* supported display devices ID list */ 74 u32 cpdl[8]; /* currently presented display list */ 75 u32 cadl[8]; /* currently active display list */ 76 u32 nadl[8]; /* next active devices list */ 77 u32 aslp; /* ASL sleep time-out */ 78 u32 tidx; /* toggle table index */ 79 u32 chpd; /* current hotplug enable indicator */ 80 u32 clid; /* current lid state*/ 81 u32 cdck; /* current docking state */ 82 u32 sxsw; /* Sx state resume */ 83 u32 evts; /* ASL supported events */ 84 u32 cnot; /* current OS notification */ 85 u32 nrdy; /* driver status */ 86 u8 rsvd2[60]; 87 } __packed; 88 89 /* OpRegion mailbox #2: SWSCI */ 90 struct opregion_swsci { 91 u32 scic; /* SWSCI command|status|data */ 92 u32 parm; /* command parameters */ 93 u32 dslp; /* driver sleep time-out */ 94 u8 rsvd[244]; 95 } __packed; 96 97 /* OpRegion mailbox #3: ASLE */ 98 struct opregion_asle { 99 u32 ardy; /* driver readiness */ 100 u32 aslc; /* ASLE interrupt command */ 101 u32 tche; /* technology enabled indicator */ 102 u32 alsi; /* current ALS illuminance reading */ 103 u32 bclp; /* backlight brightness to set */ 104 u32 pfit; /* panel fitting state */ 105 u32 cblv; /* current brightness level */ 106 u16 bclm[20]; /* backlight level duty cycle mapping table */ 107 u32 cpfm; /* current panel fitting mode */ 108 u32 epfm; /* enabled panel fitting modes */ 109 u8 plut[74]; /* panel LUT and identifier */ 110 u32 pfmb; /* PWM freq and min brightness */ 111 u32 cddv; /* color correction default values */ 112 u32 pcft; /* power conservation features */ 113 u32 srot; /* supported rotation angles */ 114 u32 iuer; /* IUER events */ 115 u8 rsvd[86]; 116 } __packed; 117 118 /* Driver readiness indicator */ 119 #define ASLE_ARDY_READY (1 << 0) 120 #define ASLE_ARDY_NOT_READY (0 << 0) 121 122 /* ASLE Interrupt Command (ASLC) bits */ 123 #define ASLC_SET_ALS_ILLUM (1 << 0) 124 #define ASLC_SET_BACKLIGHT (1 << 1) 125 #define ASLC_SET_PFIT (1 << 2) 126 #define ASLC_SET_PWM_FREQ (1 << 3) 127 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4) 128 #define ASLC_BUTTON_ARRAY (1 << 5) 129 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6) 130 #define ASLC_DOCKING_INDICATOR (1 << 7) 131 #define ASLC_ISCT_STATE_CHANGE (1 << 8) 132 #define ASLC_REQ_MSK 0x1ff 133 /* response bits */ 134 #define ASLC_ALS_ILLUM_FAILED (1 << 10) 135 #define ASLC_BACKLIGHT_FAILED (1 << 12) 136 #define ASLC_PFIT_FAILED (1 << 14) 137 #define ASLC_PWM_FREQ_FAILED (1 << 16) 138 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18) 139 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20) 140 #define ASLC_CONVERTIBLE_FAILED (1 << 22) 141 #define ASLC_DOCKING_FAILED (1 << 24) 142 #define ASLC_ISCT_STATE_FAILED (1 << 26) 143 144 /* Technology enabled indicator */ 145 #define ASLE_TCHE_ALS_EN (1 << 0) 146 #define ASLE_TCHE_BLC_EN (1 << 1) 147 #define ASLE_TCHE_PFIT_EN (1 << 2) 148 #define ASLE_TCHE_PFMB_EN (1 << 3) 149 150 /* ASLE backlight brightness to set */ 151 #define ASLE_BCLP_VALID (1<<31) 152 #define ASLE_BCLP_MSK (~(1<<31)) 153 154 /* ASLE panel fitting request */ 155 #define ASLE_PFIT_VALID (1<<31) 156 #define ASLE_PFIT_CENTER (1<<0) 157 #define ASLE_PFIT_STRETCH_TEXT (1<<1) 158 #define ASLE_PFIT_STRETCH_GFX (1<<2) 159 160 /* PWM frequency and minimum brightness */ 161 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) 162 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) 163 #define ASLE_PFMB_PWM_MASK (0x7ffffe00) 164 #define ASLE_PFMB_PWM_VALID (1<<31) 165 166 #define ASLE_CBLV_VALID (1<<31) 167 168 /* IUER */ 169 #define ASLE_IUER_DOCKING (1 << 7) 170 #define ASLE_IUER_CONVERTIBLE (1 << 6) 171 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4) 172 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3) 173 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2) 174 #define ASLE_IUER_WINDOWS_BTN (1 << 1) 175 #define ASLE_IUER_POWER_BTN (1 << 0) 176 177 /* Software System Control Interrupt (SWSCI) */ 178 #define SWSCI_SCIC_INDICATOR (1 << 0) 179 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1 180 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1) 181 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8 182 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8) 183 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8 184 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8) 185 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5 186 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5) 187 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1 188 189 #define SWSCI_FUNCTION_CODE(main, sub) \ 190 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \ 191 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT) 192 193 /* SWSCI: Get BIOS Data (GBDA) */ 194 #define SWSCI_GBDA 4 195 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0) 196 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1) 197 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4) 198 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5) 199 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6) 200 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7) 201 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10) 202 203 /* SWSCI: System BIOS Callbacks (SBCB) */ 204 #define SWSCI_SBCB 6 205 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0) 206 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1) 207 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3) 208 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4) 209 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5) 210 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6) 211 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7) 212 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8) 213 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9) 214 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10) 215 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11) 216 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16) 217 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17) 218 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18) 219 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19) 220 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21) 221 222 #define ACPI_OTHER_OUTPUT (0<<8) 223 #define ACPI_VGA_OUTPUT (1<<8) 224 #define ACPI_TV_OUTPUT (2<<8) 225 #define ACPI_DIGITAL_OUTPUT (3<<8) 226 #define ACPI_LVDS_OUTPUT (4<<8) 227 228 #define MAX_DSLP 1500 229 230 #ifdef CONFIG_ACPI 231 static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out) 232 { 233 struct drm_i915_private *dev_priv = dev->dev_private; 234 struct opregion_swsci __iomem *swsci = dev_priv->opregion.swsci; 235 u32 main_function, sub_function, scic; 236 u16 pci_swsci; 237 u32 dslp; 238 239 if (!swsci) 240 return -ENODEV; 241 242 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 243 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 244 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 245 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 246 247 /* Check if we can call the function. See swsci_setup for details. */ 248 if (main_function == SWSCI_SBCB) { 249 if ((dev_priv->opregion.swsci_sbcb_sub_functions & 250 (1 << sub_function)) == 0) 251 return -EINVAL; 252 } else if (main_function == SWSCI_GBDA) { 253 if ((dev_priv->opregion.swsci_gbda_sub_functions & 254 (1 << sub_function)) == 0) 255 return -EINVAL; 256 } 257 258 /* Driver sleep timeout in ms. */ 259 dslp = ioread32(&swsci->dslp); 260 if (!dslp) { 261 /* The spec says 2ms should be the default, but it's too small 262 * for some machines. */ 263 dslp = 50; 264 } else if (dslp > MAX_DSLP) { 265 /* Hey bios, trust must be earned. */ 266 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 267 "using %u ms instead\n", dslp, MAX_DSLP); 268 dslp = MAX_DSLP; 269 } 270 271 /* The spec tells us to do this, but we are the only user... */ 272 scic = ioread32(&swsci->scic); 273 if (scic & SWSCI_SCIC_INDICATOR) { 274 DRM_DEBUG_DRIVER("SWSCI request already in progress\n"); 275 return -EBUSY; 276 } 277 278 scic = function | SWSCI_SCIC_INDICATOR; 279 280 iowrite32(parm, &swsci->parm); 281 iowrite32(scic, &swsci->scic); 282 283 /* Ensure SCI event is selected and event trigger is cleared. */ 284 pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci); 285 if (!(pci_swsci & PCI_SWSCI_SCISEL) || (pci_swsci & PCI_SWSCI_GSSCIE)) { 286 pci_swsci |= PCI_SWSCI_SCISEL; 287 pci_swsci &= ~PCI_SWSCI_GSSCIE; 288 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); 289 } 290 291 /* Use event trigger to tell bios to check the mail. */ 292 pci_swsci |= PCI_SWSCI_GSSCIE; 293 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); 294 295 /* Poll for the result. */ 296 #define C (((scic = ioread32(&swsci->scic)) & SWSCI_SCIC_INDICATOR) == 0) 297 if (wait_for(C, dslp)) { 298 DRM_DEBUG_DRIVER("SWSCI request timed out\n"); 299 return -ETIMEDOUT; 300 } 301 302 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 303 SWSCI_SCIC_EXIT_STATUS_SHIFT; 304 305 /* Note: scic == 0 is an error! */ 306 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 307 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic); 308 return -EIO; 309 } 310 311 if (parm_out) 312 *parm_out = ioread32(&swsci->parm); 313 314 return 0; 315 316 #undef C 317 } 318 319 #define DISPLAY_TYPE_CRT 0 320 #define DISPLAY_TYPE_TV 1 321 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 322 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 323 324 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 325 bool enable) 326 { 327 struct drm_device *dev = intel_encoder->base.dev; 328 u32 parm = 0; 329 u32 type = 0; 330 u32 port; 331 332 /* don't care about old stuff for now */ 333 if (!HAS_DDI(dev)) 334 return 0; 335 336 port = intel_ddi_get_encoder_port(intel_encoder); 337 if (port == PORT_E) { 338 port = 0; 339 } else { 340 parm |= 1 << port; 341 port++; 342 } 343 344 if (!enable) 345 parm |= 4 << 8; 346 347 switch (intel_encoder->type) { 348 case INTEL_OUTPUT_ANALOG: 349 type = DISPLAY_TYPE_CRT; 350 break; 351 case INTEL_OUTPUT_UNKNOWN: 352 case INTEL_OUTPUT_DISPLAYPORT: 353 case INTEL_OUTPUT_HDMI: 354 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 355 break; 356 case INTEL_OUTPUT_EDP: 357 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 358 break; 359 default: 360 WARN_ONCE(1, "unsupported intel_encoder type %d\n", 361 intel_encoder->type); 362 return -EINVAL; 363 } 364 365 parm |= type << (16 + port * 3); 366 367 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 368 } 369 370 static const struct { 371 pci_power_t pci_power_state; 372 u32 parm; 373 } power_state_map[] = { 374 { PCI_D0, 0x00 }, 375 { PCI_D1, 0x01 }, 376 { PCI_D2, 0x02 }, 377 { PCI_D3hot, 0x04 }, 378 { PCI_D3cold, 0x04 }, 379 }; 380 381 int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) 382 { 383 int i; 384 385 if (!HAS_DDI(dev)) 386 return 0; 387 388 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 389 if (state == power_state_map[i].pci_power_state) 390 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE, 391 power_state_map[i].parm, NULL); 392 } 393 394 return -EINVAL; 395 } 396 397 static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) 398 { 399 struct drm_i915_private *dev_priv = dev->dev_private; 400 struct intel_connector *intel_connector; 401 struct opregion_asle __iomem *asle = dev_priv->opregion.asle; 402 403 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); 404 405 /* 406 * If the acpi_video interface is not supposed to be used, don't 407 * bother processing backlight level change requests from firmware. 408 */ 409 #if 0 410 if (!acpi_video_verify_backlight_support()) { 411 DRM_DEBUG_KMS("opregion backlight request ignored\n"); 412 return 0; 413 } 414 #endif 415 416 if (!(bclp & ASLE_BCLP_VALID)) 417 return ASLC_BACKLIGHT_FAILED; 418 419 bclp &= ASLE_BCLP_MSK; 420 if (bclp > 255) 421 return ASLC_BACKLIGHT_FAILED; 422 423 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); 424 425 /* 426 * Update backlight on all connectors that support backlight (usually 427 * only one). 428 */ 429 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); 430 list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head) 431 intel_panel_set_backlight(intel_connector, bclp, 255); 432 iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv); 433 434 drm_modeset_unlock(&dev->mode_config.connection_mutex); 435 436 437 return 0; 438 } 439 440 static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) 441 { 442 /* alsi is the current ALS reading in lux. 0 indicates below sensor 443 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 444 DRM_DEBUG_DRIVER("Illum is not supported\n"); 445 return ASLC_ALS_ILLUM_FAILED; 446 } 447 448 static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) 449 { 450 DRM_DEBUG_DRIVER("PWM freq is not supported\n"); 451 return ASLC_PWM_FREQ_FAILED; 452 } 453 454 static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) 455 { 456 /* Panel fitting is currently controlled by the X code, so this is a 457 noop until modesetting support works fully */ 458 DRM_DEBUG_DRIVER("Pfit is not supported\n"); 459 return ASLC_PFIT_FAILED; 460 } 461 462 static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot) 463 { 464 DRM_DEBUG_DRIVER("SROT is not supported\n"); 465 return ASLC_ROTATION_ANGLES_FAILED; 466 } 467 468 static u32 asle_set_button_array(struct drm_device *dev, u32 iuer) 469 { 470 if (!iuer) 471 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n"); 472 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 473 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n"); 474 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 475 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n"); 476 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 477 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n"); 478 if (iuer & ASLE_IUER_WINDOWS_BTN) 479 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n"); 480 if (iuer & ASLE_IUER_POWER_BTN) 481 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n"); 482 483 return ASLC_BUTTON_ARRAY_FAILED; 484 } 485 486 static u32 asle_set_convertible(struct drm_device *dev, u32 iuer) 487 { 488 if (iuer & ASLE_IUER_CONVERTIBLE) 489 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n"); 490 else 491 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n"); 492 493 return ASLC_CONVERTIBLE_FAILED; 494 } 495 496 static u32 asle_set_docking(struct drm_device *dev, u32 iuer) 497 { 498 if (iuer & ASLE_IUER_DOCKING) 499 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n"); 500 else 501 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n"); 502 503 return ASLC_DOCKING_FAILED; 504 } 505 506 static u32 asle_isct_state(struct drm_device *dev) 507 { 508 DRM_DEBUG_DRIVER("ISCT is not supported\n"); 509 return ASLC_ISCT_STATE_FAILED; 510 } 511 512 static void asle_work(struct work_struct *work) 513 { 514 struct intel_opregion *opregion = 515 container_of(work, struct intel_opregion, asle_work); 516 struct drm_i915_private *dev_priv = 517 container_of(opregion, struct drm_i915_private, opregion); 518 struct drm_device *dev = dev_priv->dev; 519 struct opregion_asle __iomem *asle = dev_priv->opregion.asle; 520 u32 aslc_stat = 0; 521 u32 aslc_req; 522 523 if (!asle) 524 return; 525 526 aslc_req = ioread32(&asle->aslc); 527 528 if (!(aslc_req & ASLC_REQ_MSK)) { 529 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n", 530 aslc_req); 531 return; 532 } 533 534 if (aslc_req & ASLC_SET_ALS_ILLUM) 535 aslc_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi)); 536 537 if (aslc_req & ASLC_SET_BACKLIGHT) 538 aslc_stat |= asle_set_backlight(dev, ioread32(&asle->bclp)); 539 540 if (aslc_req & ASLC_SET_PFIT) 541 aslc_stat |= asle_set_pfit(dev, ioread32(&asle->pfit)); 542 543 if (aslc_req & ASLC_SET_PWM_FREQ) 544 aslc_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb)); 545 546 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 547 aslc_stat |= asle_set_supported_rotation_angles(dev, 548 ioread32(&asle->srot)); 549 550 if (aslc_req & ASLC_BUTTON_ARRAY) 551 aslc_stat |= asle_set_button_array(dev, ioread32(&asle->iuer)); 552 553 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 554 aslc_stat |= asle_set_convertible(dev, ioread32(&asle->iuer)); 555 556 if (aslc_req & ASLC_DOCKING_INDICATOR) 557 aslc_stat |= asle_set_docking(dev, ioread32(&asle->iuer)); 558 559 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 560 aslc_stat |= asle_isct_state(dev); 561 562 iowrite32(aslc_stat, &asle->aslc); 563 } 564 565 void intel_opregion_asle_intr(struct drm_device *dev) 566 { 567 struct drm_i915_private *dev_priv = dev->dev_private; 568 569 if (dev_priv->opregion.asle) 570 schedule_work(&dev_priv->opregion.asle_work); 571 } 572 573 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 574 #define ACPI_EV_LID (1<<1) 575 #define ACPI_EV_DOCK (1<<2) 576 577 static struct intel_opregion *system_opregion; 578 579 #if 0 580 static int intel_opregion_video_event(struct notifier_block *nb, 581 unsigned long val, void *data) 582 { 583 /* The only video events relevant to opregion are 0x80. These indicate 584 either a docking event, lid switch or display switch request. In 585 Linux, these are handled by the dock, button and video drivers. 586 */ 587 588 struct opregion_acpi __iomem *acpi; 589 struct acpi_bus_event *event = data; 590 int ret = NOTIFY_OK; 591 592 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 593 return NOTIFY_DONE; 594 595 if (!system_opregion) 596 return NOTIFY_DONE; 597 598 acpi = system_opregion->acpi; 599 600 if (event->type == 0x80 && 601 (ioread32(&acpi->cevt) & 1) == 0) 602 ret = NOTIFY_BAD; 603 604 iowrite32(0, &acpi->csts); 605 606 return ret; 607 } 608 609 static struct notifier_block intel_opregion_notifier = { 610 .notifier_call = intel_opregion_video_event, 611 }; 612 #endif 613 614 static int acpi_is_video_device(ACPI_HANDLE devh) { 615 ACPI_HANDLE h; 616 if (ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 617 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h))) { 618 return 0; 619 } 620 return 1; 621 } 622 623 /* 624 * Initialise the DIDL field in opregion. This passes a list of devices to 625 * the firmware. Values are defined by section B.4.2 of the ACPI specification 626 * (version 3) 627 */ 628 629 static void intel_didl_outputs(struct drm_device *dev) 630 { 631 struct drm_i915_private *dev_priv = dev->dev_private; 632 struct intel_opregion *opregion = &dev_priv->opregion; 633 struct drm_connector *connector; 634 ACPI_HANDLE handle, acpi_cdev, acpi_video_bus; 635 u32 device_id; 636 ACPI_STATUS status; 637 u32 temp; 638 int i = 0; 639 640 handle = acpi_get_handle(dev->dev); 641 if (!handle) 642 return; 643 644 if (acpi_is_video_device(handle)) 645 acpi_video_bus = handle; 646 else { 647 acpi_cdev = NULL; 648 acpi_video_bus = NULL; 649 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, handle, acpi_cdev, 650 &acpi_cdev) != AE_NOT_FOUND) { 651 if (acpi_is_video_device(acpi_cdev)) { 652 acpi_video_bus = acpi_cdev; 653 break; 654 } 655 } 656 } 657 658 if (!acpi_video_bus) { 659 pr_warn("No ACPI video bus found\n"); 660 return; 661 } 662 663 acpi_cdev = NULL; 664 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpi_video_bus, acpi_cdev, 665 &acpi_cdev) != AE_NOT_FOUND) { 666 if (i >= 8) { 667 device_printf(dev->dev, 668 "More than 8 outputs detected via ACPI\n"); 669 return; 670 } 671 status = acpi_GetInteger(acpi_cdev, "_ADR", &device_id); 672 if (ACPI_SUCCESS(status)) { 673 if (!device_id) 674 goto blind_set; 675 iowrite32((u32)(device_id & 0x0f0f), 676 &opregion->acpi->didl[i]); 677 i++; 678 } 679 } 680 681 end: 682 /* If fewer than 8 outputs, the list must be null terminated */ 683 if (i < 8) 684 iowrite32(0, &opregion->acpi->didl[i]); 685 return; 686 687 blind_set: 688 i = 0; 689 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 690 int output_type = ACPI_OTHER_OUTPUT; 691 if (i >= 8) { 692 device_printf(dev->dev, 693 "More than 8 outputs in connector list\n"); 694 return; 695 } 696 switch (connector->connector_type) { 697 case DRM_MODE_CONNECTOR_VGA: 698 case DRM_MODE_CONNECTOR_DVIA: 699 output_type = ACPI_VGA_OUTPUT; 700 break; 701 case DRM_MODE_CONNECTOR_Composite: 702 case DRM_MODE_CONNECTOR_SVIDEO: 703 case DRM_MODE_CONNECTOR_Component: 704 case DRM_MODE_CONNECTOR_9PinDIN: 705 output_type = ACPI_TV_OUTPUT; 706 break; 707 case DRM_MODE_CONNECTOR_DVII: 708 case DRM_MODE_CONNECTOR_DVID: 709 case DRM_MODE_CONNECTOR_DisplayPort: 710 case DRM_MODE_CONNECTOR_HDMIA: 711 case DRM_MODE_CONNECTOR_HDMIB: 712 output_type = ACPI_DIGITAL_OUTPUT; 713 break; 714 case DRM_MODE_CONNECTOR_LVDS: 715 output_type = ACPI_LVDS_OUTPUT; 716 break; 717 } 718 temp = ioread32(&opregion->acpi->didl[i]); 719 iowrite32(temp | (1<<31) | output_type | i, 720 &opregion->acpi->didl[i]); 721 i++; 722 } 723 goto end; 724 } 725 726 static void intel_setup_cadls(struct drm_device *dev) 727 { 728 struct drm_i915_private *dev_priv = dev->dev_private; 729 struct intel_opregion *opregion = &dev_priv->opregion; 730 int i = 0; 731 u32 disp_id; 732 733 /* Initialize the CADL field by duplicating the DIDL values. 734 * Technically, this is not always correct as display outputs may exist, 735 * but not active. This initialization is necessary for some Clevo 736 * laptops that check this field before processing the brightness and 737 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if 738 * there are less than eight devices. */ 739 do { 740 disp_id = ioread32(&opregion->acpi->didl[i]); 741 iowrite32(disp_id, &opregion->acpi->cadl[i]); 742 } while (++i < 8 && disp_id != 0); 743 } 744 745 void intel_opregion_init(struct drm_device *dev) 746 { 747 struct drm_i915_private *dev_priv = dev->dev_private; 748 struct intel_opregion *opregion = &dev_priv->opregion; 749 750 if (!opregion->header) 751 return; 752 753 if (opregion->acpi) { 754 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 755 intel_didl_outputs(dev); 756 intel_setup_cadls(dev); 757 } 758 759 /* Notify BIOS we are ready to handle ACPI video ext notifs. 760 * Right now, all the events are handled by the ACPI video module. 761 * We don't actually need to do anything with them. */ 762 iowrite32(0, &opregion->acpi->csts); 763 iowrite32(1, &opregion->acpi->drdy); 764 765 system_opregion = opregion; 766 } 767 768 if (opregion->asle) { 769 iowrite32(ASLE_TCHE_BLC_EN, &opregion->asle->tche); 770 iowrite32(ASLE_ARDY_READY, &opregion->asle->ardy); 771 } 772 } 773 774 void intel_opregion_fini(struct drm_device *dev) 775 { 776 struct drm_i915_private *dev_priv = dev->dev_private; 777 struct intel_opregion *opregion = &dev_priv->opregion; 778 779 if (!opregion->header) 780 return; 781 782 if (opregion->asle) 783 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); 784 785 cancel_work_sync(&dev_priv->opregion.asle_work); 786 787 if (opregion->acpi) { 788 iowrite32(0, &opregion->acpi->drdy); 789 790 system_opregion = NULL; 791 } 792 793 /* just clear all opregion memory pointers now */ 794 pmap_unmapdev((vm_offset_t)opregion->header, OPREGION_SIZE); 795 opregion->header = NULL; 796 opregion->acpi = NULL; 797 opregion->swsci = NULL; 798 opregion->asle = NULL; 799 opregion->vbt = NULL; 800 opregion->lid_state = NULL; 801 } 802 803 static void swsci_setup(struct drm_device *dev) 804 { 805 struct drm_i915_private *dev_priv = dev->dev_private; 806 struct intel_opregion *opregion = &dev_priv->opregion; 807 bool requested_callbacks = false; 808 u32 tmp; 809 810 /* Sub-function code 0 is okay, let's allow them. */ 811 opregion->swsci_gbda_sub_functions = 1; 812 opregion->swsci_sbcb_sub_functions = 1; 813 814 /* We use GBDA to ask for supported GBDA calls. */ 815 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 816 /* make the bits match the sub-function codes */ 817 tmp <<= 1; 818 opregion->swsci_gbda_sub_functions |= tmp; 819 } 820 821 /* 822 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 823 * must not call interfaces that are not specifically requested by the 824 * bios. 825 */ 826 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 827 /* here, the bits already match sub-function codes */ 828 opregion->swsci_sbcb_sub_functions |= tmp; 829 requested_callbacks = true; 830 } 831 832 /* 833 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 834 * the callback is _requested_. But we still can't call interfaces that 835 * are not requested. 836 */ 837 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 838 /* make the bits match the sub-function codes */ 839 u32 low = tmp & 0x7ff; 840 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 841 tmp = (high << 4) | (low << 1) | 1; 842 843 /* best guess what to do with supported wrt requested */ 844 if (requested_callbacks) { 845 u32 req = opregion->swsci_sbcb_sub_functions; 846 if ((req & tmp) != req) 847 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp); 848 /* XXX: for now, trust the requested callbacks */ 849 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 850 } else { 851 opregion->swsci_sbcb_sub_functions |= tmp; 852 } 853 } 854 855 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 856 opregion->swsci_gbda_sub_functions, 857 opregion->swsci_sbcb_sub_functions); 858 } 859 #else /* CONFIG_ACPI */ 860 static inline void swsci_setup(struct drm_device *dev) {} 861 #endif /* CONFIG_ACPI */ 862 863 int intel_opregion_setup(struct drm_device *dev) 864 { 865 struct drm_i915_private *dev_priv = dev->dev_private; 866 struct intel_opregion *opregion = &dev_priv->opregion; 867 char __iomem *base; 868 u32 asls, mboxes; 869 char buf[sizeof(OPREGION_SIGNATURE)]; 870 int err = 0; 871 872 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls); 873 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); 874 if (asls == 0) { 875 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); 876 return -ENOTSUP; 877 } 878 879 #ifdef CONFIG_ACPI 880 INIT_WORK(&opregion->asle_work, asle_work); 881 #endif 882 883 base = (void *)pmap_mapbios(asls, OPREGION_SIZE); 884 if (!base) 885 return -ENOMEM; 886 887 memcpy_fromio(buf, base, sizeof(buf)); 888 889 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 890 DRM_DEBUG_DRIVER("opregion signature mismatch\n"); 891 err = -EINVAL; 892 goto err_out; 893 } 894 opregion->header = (struct opregion_header *)base; 895 opregion->vbt = base + OPREGION_VBT_OFFSET; 896 897 opregion->lid_state = (u32 *)(base + ACPI_CLID); 898 899 mboxes = ioread32(&opregion->header->mboxes); 900 if (mboxes & MBOX_ACPI) { 901 DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); 902 opregion->acpi = (struct opregion_acpi *)(base + OPREGION_ACPI_OFFSET); 903 } 904 905 if (mboxes & MBOX_SWSCI) { 906 DRM_DEBUG_DRIVER("SWSCI supported\n"); 907 opregion->swsci = (struct opregion_swsci *)(base + OPREGION_SWSCI_OFFSET); 908 swsci_setup(dev); 909 } 910 if (mboxes & MBOX_ASLE) { 911 DRM_DEBUG_DRIVER("ASLE supported\n"); 912 opregion->asle = (struct opregion_asle *)(base + OPREGION_ASLE_OFFSET); 913 914 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); 915 } 916 917 return 0; 918 919 err_out: 920 pmap_unmapdev((vm_offset_t)base, OPREGION_SIZE); 921 return err; 922 } 923