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 static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out) 231 { 232 struct drm_i915_private *dev_priv = dev->dev_private; 233 struct opregion_swsci __iomem *swsci = dev_priv->opregion.swsci; 234 u32 main_function, sub_function, scic; 235 u16 pci_swsci; 236 u32 dslp; 237 238 if (!swsci) 239 return -ENODEV; 240 241 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >> 242 SWSCI_SCIC_MAIN_FUNCTION_SHIFT; 243 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >> 244 SWSCI_SCIC_SUB_FUNCTION_SHIFT; 245 246 /* Check if we can call the function. See swsci_setup for details. */ 247 if (main_function == SWSCI_SBCB) { 248 if ((dev_priv->opregion.swsci_sbcb_sub_functions & 249 (1 << sub_function)) == 0) 250 return -EINVAL; 251 } else if (main_function == SWSCI_GBDA) { 252 if ((dev_priv->opregion.swsci_gbda_sub_functions & 253 (1 << sub_function)) == 0) 254 return -EINVAL; 255 } 256 257 /* Driver sleep timeout in ms. */ 258 dslp = ioread32(&swsci->dslp); 259 if (!dslp) { 260 /* The spec says 2ms should be the default, but it's too small 261 * for some machines. */ 262 dslp = 50; 263 } else if (dslp > MAX_DSLP) { 264 /* Hey bios, trust must be earned. */ 265 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, " 266 "using %u ms instead\n", dslp, MAX_DSLP); 267 dslp = MAX_DSLP; 268 } 269 270 /* The spec tells us to do this, but we are the only user... */ 271 scic = ioread32(&swsci->scic); 272 if (scic & SWSCI_SCIC_INDICATOR) { 273 DRM_DEBUG_DRIVER("SWSCI request already in progress\n"); 274 return -EBUSY; 275 } 276 277 scic = function | SWSCI_SCIC_INDICATOR; 278 279 iowrite32(parm, &swsci->parm); 280 iowrite32(scic, &swsci->scic); 281 282 /* Ensure SCI event is selected and event trigger is cleared. */ 283 pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci); 284 if (!(pci_swsci & PCI_SWSCI_SCISEL) || (pci_swsci & PCI_SWSCI_GSSCIE)) { 285 pci_swsci |= PCI_SWSCI_SCISEL; 286 pci_swsci &= ~PCI_SWSCI_GSSCIE; 287 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); 288 } 289 290 /* Use event trigger to tell bios to check the mail. */ 291 pci_swsci |= PCI_SWSCI_GSSCIE; 292 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci); 293 294 /* Poll for the result. */ 295 #define C (((scic = ioread32(&swsci->scic)) & SWSCI_SCIC_INDICATOR) == 0) 296 if (wait_for(C, dslp)) { 297 DRM_DEBUG_DRIVER("SWSCI request timed out\n"); 298 return -ETIMEDOUT; 299 } 300 301 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >> 302 SWSCI_SCIC_EXIT_STATUS_SHIFT; 303 304 /* Note: scic == 0 is an error! */ 305 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) { 306 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic); 307 return -EIO; 308 } 309 310 if (parm_out) 311 *parm_out = ioread32(&swsci->parm); 312 313 return 0; 314 315 #undef C 316 } 317 318 #define DISPLAY_TYPE_CRT 0 319 #define DISPLAY_TYPE_TV 1 320 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2 321 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3 322 323 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, 324 bool enable) 325 { 326 struct drm_device *dev = intel_encoder->base.dev; 327 u32 parm = 0; 328 u32 type = 0; 329 u32 port; 330 331 /* don't care about old stuff for now */ 332 if (!HAS_DDI(dev)) 333 return 0; 334 335 port = intel_ddi_get_encoder_port(intel_encoder); 336 if (port == PORT_E) { 337 port = 0; 338 } else { 339 parm |= 1 << port; 340 port++; 341 } 342 343 if (!enable) 344 parm |= 4 << 8; 345 346 switch (intel_encoder->type) { 347 case INTEL_OUTPUT_ANALOG: 348 type = DISPLAY_TYPE_CRT; 349 break; 350 case INTEL_OUTPUT_UNKNOWN: 351 case INTEL_OUTPUT_DISPLAYPORT: 352 case INTEL_OUTPUT_HDMI: 353 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL; 354 break; 355 case INTEL_OUTPUT_EDP: 356 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL; 357 break; 358 default: 359 WARN_ONCE(1, "unsupported intel_encoder type %d\n", 360 intel_encoder->type); 361 return -EINVAL; 362 } 363 364 parm |= type << (16 + port * 3); 365 366 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL); 367 } 368 369 static const struct { 370 pci_power_t pci_power_state; 371 u32 parm; 372 } power_state_map[] = { 373 { PCI_D0, 0x00 }, 374 { PCI_D1, 0x01 }, 375 { PCI_D2, 0x02 }, 376 { PCI_D3hot, 0x04 }, 377 { PCI_D3cold, 0x04 }, 378 }; 379 380 int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) 381 { 382 int i; 383 384 if (!HAS_DDI(dev)) 385 return 0; 386 387 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) { 388 if (state == power_state_map[i].pci_power_state) 389 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE, 390 power_state_map[i].parm, NULL); 391 } 392 393 return -EINVAL; 394 } 395 396 static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) 397 { 398 struct drm_i915_private *dev_priv = dev->dev_private; 399 struct intel_connector *intel_connector; 400 struct opregion_asle __iomem *asle = dev_priv->opregion.asle; 401 402 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); 403 404 if (!(bclp & ASLE_BCLP_VALID)) 405 return ASLC_BACKLIGHT_FAILED; 406 407 bclp &= ASLE_BCLP_MSK; 408 if (bclp > 255) 409 return ASLC_BACKLIGHT_FAILED; 410 411 mutex_lock(&dev->mode_config.mutex); 412 413 /* 414 * Update backlight on all connectors that support backlight (usually 415 * only one). 416 */ 417 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); 418 list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head) 419 intel_panel_set_backlight(intel_connector, bclp, 255); 420 iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv); 421 422 mutex_unlock(&dev->mode_config.mutex); 423 424 425 return 0; 426 } 427 428 static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) 429 { 430 /* alsi is the current ALS reading in lux. 0 indicates below sensor 431 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 432 DRM_DEBUG_DRIVER("Illum is not supported\n"); 433 return ASLC_ALS_ILLUM_FAILED; 434 } 435 436 static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) 437 { 438 DRM_DEBUG_DRIVER("PWM freq is not supported\n"); 439 return ASLC_PWM_FREQ_FAILED; 440 } 441 442 static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) 443 { 444 /* Panel fitting is currently controlled by the X code, so this is a 445 noop until modesetting support works fully */ 446 DRM_DEBUG_DRIVER("Pfit is not supported\n"); 447 return ASLC_PFIT_FAILED; 448 } 449 450 static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot) 451 { 452 DRM_DEBUG_DRIVER("SROT is not supported\n"); 453 return ASLC_ROTATION_ANGLES_FAILED; 454 } 455 456 static u32 asle_set_button_array(struct drm_device *dev, u32 iuer) 457 { 458 if (!iuer) 459 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n"); 460 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN) 461 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n"); 462 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN) 463 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n"); 464 if (iuer & ASLE_IUER_VOLUME_UP_BTN) 465 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n"); 466 if (iuer & ASLE_IUER_WINDOWS_BTN) 467 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n"); 468 if (iuer & ASLE_IUER_POWER_BTN) 469 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n"); 470 471 return ASLC_BUTTON_ARRAY_FAILED; 472 } 473 474 static u32 asle_set_convertible(struct drm_device *dev, u32 iuer) 475 { 476 if (iuer & ASLE_IUER_CONVERTIBLE) 477 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n"); 478 else 479 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n"); 480 481 return ASLC_CONVERTIBLE_FAILED; 482 } 483 484 static u32 asle_set_docking(struct drm_device *dev, u32 iuer) 485 { 486 if (iuer & ASLE_IUER_DOCKING) 487 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n"); 488 else 489 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n"); 490 491 return ASLC_DOCKING_FAILED; 492 } 493 494 static u32 asle_isct_state(struct drm_device *dev) 495 { 496 DRM_DEBUG_DRIVER("ISCT is not supported\n"); 497 return ASLC_ISCT_STATE_FAILED; 498 } 499 500 static void asle_work(struct work_struct *work) 501 { 502 struct intel_opregion *opregion = 503 container_of(work, struct intel_opregion, asle_work); 504 struct drm_i915_private *dev_priv = 505 container_of(opregion, struct drm_i915_private, opregion); 506 struct drm_device *dev = dev_priv->dev; 507 struct opregion_asle __iomem *asle = dev_priv->opregion.asle; 508 u32 aslc_stat = 0; 509 u32 aslc_req; 510 511 if (!asle) 512 return; 513 514 aslc_req = ioread32(&asle->aslc); 515 516 if (!(aslc_req & ASLC_REQ_MSK)) { 517 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n", 518 aslc_req); 519 return; 520 } 521 522 if (aslc_req & ASLC_SET_ALS_ILLUM) 523 aslc_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi)); 524 525 if (aslc_req & ASLC_SET_BACKLIGHT) 526 aslc_stat |= asle_set_backlight(dev, ioread32(&asle->bclp)); 527 528 if (aslc_req & ASLC_SET_PFIT) 529 aslc_stat |= asle_set_pfit(dev, ioread32(&asle->pfit)); 530 531 if (aslc_req & ASLC_SET_PWM_FREQ) 532 aslc_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb)); 533 534 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES) 535 aslc_stat |= asle_set_supported_rotation_angles(dev, 536 ioread32(&asle->srot)); 537 538 if (aslc_req & ASLC_BUTTON_ARRAY) 539 aslc_stat |= asle_set_button_array(dev, ioread32(&asle->iuer)); 540 541 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR) 542 aslc_stat |= asle_set_convertible(dev, ioread32(&asle->iuer)); 543 544 if (aslc_req & ASLC_DOCKING_INDICATOR) 545 aslc_stat |= asle_set_docking(dev, ioread32(&asle->iuer)); 546 547 if (aslc_req & ASLC_ISCT_STATE_CHANGE) 548 aslc_stat |= asle_isct_state(dev); 549 550 iowrite32(aslc_stat, &asle->aslc); 551 } 552 553 void intel_opregion_asle_intr(struct drm_device *dev) 554 { 555 struct drm_i915_private *dev_priv = dev->dev_private; 556 557 if (dev_priv->opregion.asle) 558 schedule_work(&dev_priv->opregion.asle_work); 559 } 560 561 #define ACPI_EV_DISPLAY_SWITCH (1<<0) 562 #define ACPI_EV_LID (1<<1) 563 #define ACPI_EV_DOCK (1<<2) 564 565 static struct intel_opregion *system_opregion; 566 567 #if 0 568 static int intel_opregion_video_event(struct notifier_block *nb, 569 unsigned long val, void *data) 570 { 571 /* The only video events relevant to opregion are 0x80. These indicate 572 either a docking event, lid switch or display switch request. In 573 Linux, these are handled by the dock, button and video drivers. 574 */ 575 576 struct opregion_acpi __iomem *acpi; 577 struct acpi_bus_event *event = data; 578 int ret = NOTIFY_OK; 579 580 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 581 return NOTIFY_DONE; 582 583 if (!system_opregion) 584 return NOTIFY_DONE; 585 586 acpi = system_opregion->acpi; 587 588 if (event->type == 0x80 && 589 (ioread32(&acpi->cevt) & 1) == 0) 590 ret = NOTIFY_BAD; 591 592 iowrite32(0, &acpi->csts); 593 594 return ret; 595 } 596 597 static struct notifier_block intel_opregion_notifier = { 598 .notifier_call = intel_opregion_video_event, 599 }; 600 #endif 601 602 static int acpi_is_video_device(ACPI_HANDLE devh) { 603 ACPI_HANDLE h; 604 if (ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 605 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h))) { 606 return 0; 607 } 608 return 1; 609 } 610 611 /* 612 * Initialise the DIDL field in opregion. This passes a list of devices to 613 * the firmware. Values are defined by section B.4.2 of the ACPI specification 614 * (version 3) 615 */ 616 617 static void intel_didl_outputs(struct drm_device *dev) 618 { 619 struct drm_i915_private *dev_priv = dev->dev_private; 620 struct intel_opregion *opregion = &dev_priv->opregion; 621 struct drm_connector *connector; 622 ACPI_HANDLE handle, acpi_cdev, acpi_video_bus; 623 u32 device_id; 624 ACPI_STATUS status; 625 u32 temp; 626 int i = 0; 627 628 handle = acpi_get_handle(dev->dev); 629 if (!handle) 630 return; 631 632 if (acpi_is_video_device(handle)) 633 acpi_video_bus = handle; 634 else { 635 acpi_cdev = NULL; 636 acpi_video_bus = NULL; 637 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, handle, acpi_cdev, 638 &acpi_cdev) != AE_NOT_FOUND) { 639 if (acpi_is_video_device(acpi_cdev)) { 640 acpi_video_bus = acpi_cdev; 641 break; 642 } 643 } 644 } 645 646 if (!acpi_video_bus) { 647 pr_warn("No ACPI video bus found\n"); 648 return; 649 } 650 651 acpi_cdev = NULL; 652 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpi_video_bus, acpi_cdev, 653 &acpi_cdev) != AE_NOT_FOUND) { 654 if (i >= 8) { 655 device_printf(dev->dev, 656 "More than 8 outputs detected via ACPI\n"); 657 return; 658 } 659 status = acpi_GetInteger(acpi_cdev, "_ADR", &device_id); 660 if (ACPI_SUCCESS(status)) { 661 if (!device_id) 662 goto blind_set; 663 iowrite32((u32)(device_id & 0x0f0f), 664 &opregion->acpi->didl[i]); 665 i++; 666 } 667 } 668 669 end: 670 /* If fewer than 8 outputs, the list must be null terminated */ 671 if (i < 8) 672 iowrite32(0, &opregion->acpi->didl[i]); 673 return; 674 675 blind_set: 676 i = 0; 677 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 678 int output_type = ACPI_OTHER_OUTPUT; 679 if (i >= 8) { 680 device_printf(dev->dev, 681 "More than 8 outputs in connector list\n"); 682 return; 683 } 684 switch (connector->connector_type) { 685 case DRM_MODE_CONNECTOR_VGA: 686 case DRM_MODE_CONNECTOR_DVIA: 687 output_type = ACPI_VGA_OUTPUT; 688 break; 689 case DRM_MODE_CONNECTOR_Composite: 690 case DRM_MODE_CONNECTOR_SVIDEO: 691 case DRM_MODE_CONNECTOR_Component: 692 case DRM_MODE_CONNECTOR_9PinDIN: 693 output_type = ACPI_TV_OUTPUT; 694 break; 695 case DRM_MODE_CONNECTOR_DVII: 696 case DRM_MODE_CONNECTOR_DVID: 697 case DRM_MODE_CONNECTOR_DisplayPort: 698 case DRM_MODE_CONNECTOR_HDMIA: 699 case DRM_MODE_CONNECTOR_HDMIB: 700 output_type = ACPI_DIGITAL_OUTPUT; 701 break; 702 case DRM_MODE_CONNECTOR_LVDS: 703 output_type = ACPI_LVDS_OUTPUT; 704 break; 705 } 706 temp = ioread32(&opregion->acpi->didl[i]); 707 iowrite32(temp | (1<<31) | output_type | i, 708 &opregion->acpi->didl[i]); 709 i++; 710 } 711 goto end; 712 } 713 714 static void intel_setup_cadls(struct drm_device *dev) 715 { 716 struct drm_i915_private *dev_priv = dev->dev_private; 717 struct intel_opregion *opregion = &dev_priv->opregion; 718 int i = 0; 719 u32 disp_id; 720 721 /* Initialize the CADL field by duplicating the DIDL values. 722 * Technically, this is not always correct as display outputs may exist, 723 * but not active. This initialization is necessary for some Clevo 724 * laptops that check this field before processing the brightness and 725 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if 726 * there are less than eight devices. */ 727 do { 728 disp_id = ioread32(&opregion->acpi->didl[i]); 729 iowrite32(disp_id, &opregion->acpi->cadl[i]); 730 } while (++i < 8 && disp_id != 0); 731 } 732 733 void intel_opregion_init(struct drm_device *dev) 734 { 735 struct drm_i915_private *dev_priv = dev->dev_private; 736 struct intel_opregion *opregion = &dev_priv->opregion; 737 738 if (!opregion->header) 739 return; 740 741 if (opregion->acpi) { 742 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 743 intel_didl_outputs(dev); 744 intel_setup_cadls(dev); 745 } 746 747 /* Notify BIOS we are ready to handle ACPI video ext notifs. 748 * Right now, all the events are handled by the ACPI video module. 749 * We don't actually need to do anything with them. */ 750 iowrite32(0, &opregion->acpi->csts); 751 iowrite32(1, &opregion->acpi->drdy); 752 753 system_opregion = opregion; 754 } 755 756 if (opregion->asle) { 757 iowrite32(ASLE_TCHE_BLC_EN, &opregion->asle->tche); 758 iowrite32(ASLE_ARDY_READY, &opregion->asle->ardy); 759 } 760 } 761 762 void intel_opregion_fini(struct drm_device *dev) 763 { 764 struct drm_i915_private *dev_priv = dev->dev_private; 765 struct intel_opregion *opregion = &dev_priv->opregion; 766 767 if (!opregion->header) 768 return; 769 770 if (opregion->asle) 771 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); 772 773 cancel_work_sync(&dev_priv->opregion.asle_work); 774 775 if (opregion->acpi) { 776 iowrite32(0, &opregion->acpi->drdy); 777 778 system_opregion = NULL; 779 } 780 781 /* just clear all opregion memory pointers now */ 782 pmap_unmapdev((vm_offset_t)opregion->header, OPREGION_SIZE); 783 opregion->header = NULL; 784 opregion->acpi = NULL; 785 opregion->swsci = NULL; 786 opregion->asle = NULL; 787 opregion->vbt = NULL; 788 opregion->lid_state = NULL; 789 } 790 791 static void swsci_setup(struct drm_device *dev) 792 { 793 struct drm_i915_private *dev_priv = dev->dev_private; 794 struct intel_opregion *opregion = &dev_priv->opregion; 795 bool requested_callbacks = false; 796 u32 tmp; 797 798 /* Sub-function code 0 is okay, let's allow them. */ 799 opregion->swsci_gbda_sub_functions = 1; 800 opregion->swsci_sbcb_sub_functions = 1; 801 802 /* We use GBDA to ask for supported GBDA calls. */ 803 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) { 804 /* make the bits match the sub-function codes */ 805 tmp <<= 1; 806 opregion->swsci_gbda_sub_functions |= tmp; 807 } 808 809 /* 810 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver 811 * must not call interfaces that are not specifically requested by the 812 * bios. 813 */ 814 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) { 815 /* here, the bits already match sub-function codes */ 816 opregion->swsci_sbcb_sub_functions |= tmp; 817 requested_callbacks = true; 818 } 819 820 /* 821 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean 822 * the callback is _requested_. But we still can't call interfaces that 823 * are not requested. 824 */ 825 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) { 826 /* make the bits match the sub-function codes */ 827 u32 low = tmp & 0x7ff; 828 u32 high = tmp & ~0xfff; /* bit 11 is reserved */ 829 tmp = (high << 4) | (low << 1) | 1; 830 831 /* best guess what to do with supported wrt requested */ 832 if (requested_callbacks) { 833 u32 req = opregion->swsci_sbcb_sub_functions; 834 if ((req & tmp) != req) 835 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp); 836 /* XXX: for now, trust the requested callbacks */ 837 /* opregion->swsci_sbcb_sub_functions &= tmp; */ 838 } else { 839 opregion->swsci_sbcb_sub_functions |= tmp; 840 } 841 } 842 843 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n", 844 opregion->swsci_gbda_sub_functions, 845 opregion->swsci_sbcb_sub_functions); 846 } 847 848 int intel_opregion_setup(struct drm_device *dev) 849 { 850 struct drm_i915_private *dev_priv = dev->dev_private; 851 struct intel_opregion *opregion = &dev_priv->opregion; 852 char *base; 853 u32 asls, mboxes; 854 char buf[sizeof(OPREGION_SIGNATURE)]; 855 int err = 0; 856 857 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls); 858 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); 859 if (asls == 0) { 860 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); 861 return -ENOTSUP; 862 } 863 864 #define MAX_DSLP 1500 865 866 #ifdef CONFIG_ACPI 867 INIT_WORK(&opregion->asle_work, asle_work); 868 #endif 869 870 base = (void *)pmap_mapbios(asls, OPREGION_SIZE); 871 if (!base) 872 return -ENOMEM; 873 874 memcpy_fromio(buf, base, sizeof(buf)); 875 876 if (memcmp(buf, OPREGION_SIGNATURE, 16)) { 877 DRM_DEBUG_DRIVER("opregion signature mismatch\n"); 878 err = -EINVAL; 879 goto err_out; 880 } 881 opregion->header = (struct opregion_header *)base; 882 opregion->vbt = base + OPREGION_VBT_OFFSET; 883 884 opregion->lid_state = (u32 *)(base + ACPI_CLID); 885 886 mboxes = ioread32(&opregion->header->mboxes); 887 if (mboxes & MBOX_ACPI) { 888 DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); 889 opregion->acpi = (struct opregion_acpi *)(base + OPREGION_ACPI_OFFSET); 890 } 891 892 if (mboxes & MBOX_SWSCI) { 893 DRM_DEBUG_DRIVER("SWSCI supported\n"); 894 opregion->swsci = (struct opregion_swsci *)(base + OPREGION_SWSCI_OFFSET); 895 swsci_setup(dev); 896 } 897 if (mboxes & MBOX_ASLE) { 898 DRM_DEBUG_DRIVER("ASLE supported\n"); 899 opregion->asle = (struct opregion_asle *)(base + OPREGION_ASLE_OFFSET); 900 901 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); 902 } 903 904 return 0; 905 906 err_out: 907 pmap_unmapdev((vm_offset_t)base, OPREGION_SIZE); 908 return err; 909 } 910