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 <sys/cdefs.h> 29__FBSDID("$FreeBSD$"); 30 31#include <dev/drm2/drmP.h> 32#include <dev/drm2/i915/i915_drm.h> 33#include <dev/drm2/i915/i915_drv.h> 34#include <dev/drm2/i915/intel_drv.h> 35#include <contrib/dev/acpica/include/acpi.h> 36#include <contrib/dev/acpica/include/accommon.h> 37#include <dev/acpica/acpivar.h> 38 39#define PCI_ASLE 0xe4 40#define PCI_ASLS 0xfc 41 42#define OPREGION_HEADER_OFFSET 0 43#define OPREGION_ACPI_OFFSET 0x100 44#define ACPI_CLID 0x01ac /* current lid state indicator */ 45#define ACPI_CDCK 0x01b0 /* current docking state indicator */ 46#define OPREGION_SWSCI_OFFSET 0x200 47#define OPREGION_ASLE_OFFSET 0x300 48#define OPREGION_VBT_OFFSET 0x400 49 50#define OPREGION_SIGNATURE "IntelGraphicsMem" 51#define MBOX_ACPI (1<<0) 52#define MBOX_SWSCI (1<<1) 53#define MBOX_ASLE (1<<2) 54 55struct opregion_header { 56 u8 signature[16]; 57 u32 size; 58 u32 opregion_ver; 59 u8 bios_ver[32]; 60 u8 vbios_ver[16]; 61 u8 driver_ver[16]; 62 u32 mboxes; 63 u8 reserved[164]; 64} __attribute__((packed)); 65 66/* OpRegion mailbox #1: public ACPI methods */ 67struct opregion_acpi { 68 u32 drdy; /* driver readiness */ 69 u32 csts; /* notification status */ 70 u32 cevt; /* current event */ 71 u8 rsvd1[20]; 72 u32 didl[8]; /* supported display devices ID list */ 73 u32 cpdl[8]; /* currently presented display list */ 74 u32 cadl[8]; /* currently active display list */ 75 u32 nadl[8]; /* next active devices list */ 76 u32 aslp; /* ASL sleep time-out */ 77 u32 tidx; /* toggle table index */ 78 u32 chpd; /* current hotplug enable indicator */ 79 u32 clid; /* current lid state*/ 80 u32 cdck; /* current docking state */ 81 u32 sxsw; /* Sx state resume */ 82 u32 evts; /* ASL supported events */ 83 u32 cnot; /* current OS notification */ 84 u32 nrdy; /* driver status */ 85 u8 rsvd2[60]; 86} __attribute__((packed)); 87 88/* OpRegion mailbox #2: SWSCI */ 89struct opregion_swsci { 90 u32 scic; /* SWSCI command|status|data */ 91 u32 parm; /* command parameters */ 92 u32 dslp; /* driver sleep time-out */ 93 u8 rsvd[244]; 94} __attribute__((packed)); 95 96/* OpRegion mailbox #3: ASLE */ 97struct opregion_asle { 98 u32 ardy; /* driver readiness */ 99 u32 aslc; /* ASLE interrupt command */ 100 u32 tche; /* technology enabled indicator */ 101 u32 alsi; /* current ALS illuminance reading */ 102 u32 bclp; /* backlight brightness to set */ 103 u32 pfit; /* panel fitting state */ 104 u32 cblv; /* current brightness level */ 105 u16 bclm[20]; /* backlight level duty cycle mapping table */ 106 u32 cpfm; /* current panel fitting mode */ 107 u32 epfm; /* enabled panel fitting modes */ 108 u8 plut[74]; /* panel LUT and identifier */ 109 u32 pfmb; /* PWM freq and min brightness */ 110 u8 rsvd[102]; 111} __attribute__((packed)); 112 113/* ASLE irq request bits */ 114#define ASLE_SET_ALS_ILLUM (1 << 0) 115#define ASLE_SET_BACKLIGHT (1 << 1) 116#define ASLE_SET_PFIT (1 << 2) 117#define ASLE_SET_PWM_FREQ (1 << 3) 118#define ASLE_REQ_MSK 0xf 119 120/* response bits of ASLE irq request */ 121#define ASLE_ALS_ILLUM_FAILED (1<<10) 122#define ASLE_BACKLIGHT_FAILED (1<<12) 123#define ASLE_PFIT_FAILED (1<<14) 124#define ASLE_PWM_FREQ_FAILED (1<<16) 125 126/* ASLE backlight brightness to set */ 127#define ASLE_BCLP_VALID (1<<31) 128#define ASLE_BCLP_MSK (~(1<<31)) 129 130/* ASLE panel fitting request */ 131#define ASLE_PFIT_VALID (1<<31) 132#define ASLE_PFIT_CENTER (1<<0) 133#define ASLE_PFIT_STRETCH_TEXT (1<<1) 134#define ASLE_PFIT_STRETCH_GFX (1<<2) 135 136/* PWM frequency and minimum brightness */ 137#define ASLE_PFMB_BRIGHTNESS_MASK (0xff) 138#define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) 139#define ASLE_PFMB_PWM_MASK (0x7ffffe00) 140#define ASLE_PFMB_PWM_VALID (1<<31) 141 142#define ASLE_CBLV_VALID (1<<31) 143 144#define ACPI_OTHER_OUTPUT (0<<8) 145#define ACPI_VGA_OUTPUT (1<<8) 146#define ACPI_TV_OUTPUT (2<<8) 147#define ACPI_DIGITAL_OUTPUT (3<<8) 148#define ACPI_LVDS_OUTPUT (4<<8) 149 150#if defined(CONFIG_ACPI) 151static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) 152{ 153 struct drm_i915_private *dev_priv = dev->dev_private; 154 struct opregion_asle *asle = dev_priv->opregion.asle; 155 u32 max; 156 157 if (!(bclp & ASLE_BCLP_VALID)) 158 return ASLE_BACKLIGHT_FAILED; 159 160 bclp &= ASLE_BCLP_MSK; 161 if (bclp > 255) 162 return ASLE_BACKLIGHT_FAILED; 163 164 max = intel_panel_get_max_backlight(dev); 165 intel_panel_set_backlight(dev, bclp * max / 255); 166 asle->cblv = (bclp*0x64)/0xff | ASLE_CBLV_VALID; 167 168 return 0; 169} 170 171static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) 172{ 173 /* alsi is the current ALS reading in lux. 0 indicates below sensor 174 range, 0xffff indicates above sensor range. 1-0xfffe are valid */ 175 return 0; 176} 177 178static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) 179{ 180 struct drm_i915_private *dev_priv = dev->dev_private; 181 if (pfmb & ASLE_PFMB_PWM_VALID) { 182 u32 blc_pwm_ctl = I915_READ(BLC_PWM_CTL); 183 u32 pwm = pfmb & ASLE_PFMB_PWM_MASK; 184 blc_pwm_ctl &= BACKLIGHT_DUTY_CYCLE_MASK; 185 pwm = pwm >> 9; 186 /* FIXME - what do we do with the PWM? */ 187 } 188 return 0; 189} 190 191static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) 192{ 193 /* Panel fitting is currently controlled by the X code, so this is a 194 noop until modesetting support works fully */ 195 if (!(pfit & ASLE_PFIT_VALID)) 196 return ASLE_PFIT_FAILED; 197 return 0; 198} 199 200void intel_opregion_asle_intr(struct drm_device *dev) 201{ 202 struct drm_i915_private *dev_priv = dev->dev_private; 203 struct opregion_asle *asle = dev_priv->opregion.asle; 204 u32 asle_stat = 0; 205 u32 asle_req; 206 207 if (!asle) 208 return; 209 210 asle_req = asle->aslc & ASLE_REQ_MSK; 211 212 if (!asle_req) { 213 DRM_DEBUG("non asle set request??\n"); 214 return; 215 } 216 217 if (asle_req & ASLE_SET_ALS_ILLUM) 218 asle_stat |= asle_set_als_illum(dev, asle->alsi); 219 220 if (asle_req & ASLE_SET_BACKLIGHT) 221 asle_stat |= asle_set_backlight(dev, asle->bclp); 222 223 if (asle_req & ASLE_SET_PFIT) 224 asle_stat |= asle_set_pfit(dev, asle->pfit); 225 226 if (asle_req & ASLE_SET_PWM_FREQ) 227 asle_stat |= asle_set_pwm_freq(dev, asle->pfmb); 228 229 asle->aslc = asle_stat; 230} 231 232void intel_opregion_gse_intr(struct drm_device *dev) 233{ 234 struct drm_i915_private *dev_priv = dev->dev_private; 235 struct opregion_asle *asle = dev_priv->opregion.asle; 236 u32 asle_stat = 0; 237 u32 asle_req; 238 239 if (!asle) 240 return; 241 242 asle_req = asle->aslc & ASLE_REQ_MSK; 243 244 if (!asle_req) { 245 DRM_DEBUG("non asle set request??\n"); 246 return; 247 } 248 249 if (asle_req & ASLE_SET_ALS_ILLUM) { 250 DRM_DEBUG("Illum is not supported\n"); 251 asle_stat |= ASLE_ALS_ILLUM_FAILED; 252 } 253 254 if (asle_req & ASLE_SET_BACKLIGHT) 255 asle_stat |= asle_set_backlight(dev, asle->bclp); 256 257 if (asle_req & ASLE_SET_PFIT) { 258 DRM_DEBUG("Pfit is not supported\n"); 259 asle_stat |= ASLE_PFIT_FAILED; 260 } 261 262 if (asle_req & ASLE_SET_PWM_FREQ) { 263 DRM_DEBUG("PWM freq is not supported\n"); 264 asle_stat |= ASLE_PWM_FREQ_FAILED; 265 } 266 267 asle->aslc = asle_stat; 268} 269#define ASLE_ALS_EN (1<<0) 270#define ASLE_BLC_EN (1<<1) 271#define ASLE_PFIT_EN (1<<2) 272#define ASLE_PFMB_EN (1<<3) 273 274void intel_opregion_enable_asle(struct drm_device *dev) 275{ 276 struct drm_i915_private *dev_priv = dev->dev_private; 277 struct opregion_asle *asle = dev_priv->opregion.asle; 278 279 if (asle) { 280 if (IS_MOBILE(dev)) 281 intel_enable_asle(dev); 282 283 asle->tche = ASLE_ALS_EN | ASLE_BLC_EN | ASLE_PFIT_EN | 284 ASLE_PFMB_EN; 285 asle->ardy = 1; 286 } 287} 288 289#define ACPI_EV_DISPLAY_SWITCH (1<<0) 290#define ACPI_EV_LID (1<<1) 291#define ACPI_EV_DOCK (1<<2) 292 293static struct intel_opregion *system_opregion; 294 295#if 0 296static int intel_opregion_video_event(struct notifier_block *nb, 297 unsigned long val, void *data) 298{ 299 /* The only video events relevant to opregion are 0x80. These indicate 300 either a docking event, lid switch or display switch request. In 301 Linux, these are handled by the dock, button and video drivers. 302 */ 303 struct opregion_acpi *acpi; 304 struct acpi_bus_event *event = data; 305 int ret = NOTIFY_OK; 306 307 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) 308 return NOTIFY_DONE; 309 310 if (!system_opregion) 311 return NOTIFY_DONE; 312 313 acpi = system_opregion->acpi; 314 315 if (event->type == 0x80 && !(acpi->cevt & 0x1)) 316 ret = NOTIFY_BAD; 317 318 acpi->csts = 0; 319 320 return ret; 321} 322 323static struct notifier_block intel_opregion_notifier = { 324 .notifier_call = intel_opregion_video_event, 325}; 326#endif 327 328/* 329 * Initialise the DIDL field in opregion. This passes a list of devices to 330 * the firmware. Values are defined by section B.4.2 of the ACPI specification 331 * (version 3) 332 */ 333 334static int acpi_is_video_device(ACPI_HANDLE devh) { 335 ACPI_HANDLE h; 336 if (ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 337 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h))) { 338 return 0; 339 } 340 return 1; 341} 342 343static void intel_didl_outputs(struct drm_device *dev) 344{ 345 struct drm_i915_private *dev_priv = dev->dev_private; 346 struct intel_opregion *opregion = &dev_priv->opregion; 347 struct drm_connector *connector; 348 u32 device_id; 349 ACPI_HANDLE handle, acpi_video_bus, acpi_cdev; 350 ACPI_STATUS status; 351 int i = 0; 352 353 handle = acpi_get_handle(dev->dev); 354 if (!handle) 355 return; 356 357 if (acpi_is_video_device(handle)) 358 acpi_video_bus = handle; 359 else { 360 acpi_cdev = NULL; 361 acpi_video_bus = NULL; 362 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, handle, acpi_cdev, 363 &acpi_cdev) != AE_NOT_FOUND) { 364 if (acpi_is_video_device(acpi_cdev)) { 365 acpi_video_bus = acpi_cdev; 366 break; 367 } 368 } 369#if 0 370 list_for_each_entry(acpi_cdev, &acpi_dev->children, node) { 371 if (acpi_is_video_device(acpi_cdev)) { 372 acpi_video_bus = acpi_cdev; 373 break; 374 } 375 } 376#endif 377 } 378 379 if (!acpi_video_bus) { 380 device_printf(dev->dev, "No ACPI video bus found\n"); 381 return; 382 } 383 384 acpi_cdev = NULL; 385 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpi_video_bus, acpi_cdev, 386 &acpi_cdev) != AE_NOT_FOUND) { 387 if (i >= 8) { 388 device_printf(dev->dev, "More than 8 outputs detected\n"); 389 return; 390 } 391 status = acpi_GetInteger(acpi_cdev, "_ADR", &device_id); 392 if (ACPI_SUCCESS(status)) { 393 if (!device_id) 394 goto blind_set; 395 opregion->acpi->didl[i] = (u32)(device_id & 0x0f0f); 396 i++; 397 } 398 } 399#if 0 400 list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) { 401 if (i >= 8) { 402 dev_printk(KERN_ERR, &dev->pdev->dev, 403 "More than 8 outputs detected\n"); 404 return; 405 } 406 status = 407 acpi_evaluate_integer(acpi_cdev->handle, "_ADR", 408 NULL, &device_id); 409 if (ACPI_SUCCESS(status)) { 410 if (!device_id) 411 goto blind_set; 412 opregion->acpi->didl[i] = (u32)(device_id & 0x0f0f); 413 i++; 414 } 415 } 416#endif 417 418end: 419 /* If fewer than 8 outputs, the list must be null terminated */ 420 if (i < 8) 421 opregion->acpi->didl[i] = 0; 422 return; 423 424blind_set: 425 i = 0; 426 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 427 int output_type = ACPI_OTHER_OUTPUT; 428 if (i >= 8) { 429 device_printf(dev->dev, 430 "More than 8 outputs detected\n"); 431 return; 432 } 433 switch (connector->connector_type) { 434 case DRM_MODE_CONNECTOR_VGA: 435 case DRM_MODE_CONNECTOR_DVIA: 436 output_type = ACPI_VGA_OUTPUT; 437 break; 438 case DRM_MODE_CONNECTOR_Composite: 439 case DRM_MODE_CONNECTOR_SVIDEO: 440 case DRM_MODE_CONNECTOR_Component: 441 case DRM_MODE_CONNECTOR_9PinDIN: 442 output_type = ACPI_TV_OUTPUT; 443 break; 444 case DRM_MODE_CONNECTOR_DVII: 445 case DRM_MODE_CONNECTOR_DVID: 446 case DRM_MODE_CONNECTOR_DisplayPort: 447 case DRM_MODE_CONNECTOR_HDMIA: 448 case DRM_MODE_CONNECTOR_HDMIB: 449 output_type = ACPI_DIGITAL_OUTPUT; 450 break; 451 case DRM_MODE_CONNECTOR_LVDS: 452 output_type = ACPI_LVDS_OUTPUT; 453 break; 454 } 455 opregion->acpi->didl[i] |= (1<<31) | output_type | i; 456 i++; 457 } 458 goto end; 459} 460 461static void intel_setup_cadls(struct drm_device *dev) 462{ 463 struct drm_i915_private *dev_priv = dev->dev_private; 464 struct intel_opregion *opregion = &dev_priv->opregion; 465 int i = 0; 466 u32 disp_id; 467 468 /* Initialize the CADL field by duplicating the DIDL values. 469 * Technically, this is not always correct as display outputs may exist, 470 * but not active. This initialization is necessary for some Clevo 471 * laptops that check this field before processing the brightness and 472 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if 473 * there are less than eight devices. */ 474 do { 475 disp_id = opregion->acpi->didl[i]; 476 opregion->acpi->cadl[i] = disp_id; 477 } while (++i < 8 && disp_id != 0); 478} 479 480void intel_opregion_init(struct drm_device *dev) 481{ 482 struct drm_i915_private *dev_priv = dev->dev_private; 483 struct intel_opregion *opregion = &dev_priv->opregion; 484 485 if (!opregion->header) 486 return; 487 488 if (opregion->acpi) { 489 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 490 intel_didl_outputs(dev); 491 intel_setup_cadls(dev); 492 } 493 494 /* Notify BIOS we are ready to handle ACPI video ext notifs. 495 * Right now, all the events are handled by the ACPI video module. 496 * We don't actually need to do anything with them. */ 497 opregion->acpi->csts = 0; 498 opregion->acpi->drdy = 1; 499 500 system_opregion = opregion; 501#if 0 502 register_acpi_notifier(&intel_opregion_notifier); 503#endif 504 } 505 506 if (opregion->asle) 507 intel_opregion_enable_asle(dev); 508} 509 510void intel_opregion_fini(struct drm_device *dev) 511{ 512 struct drm_i915_private *dev_priv = dev->dev_private; 513 struct intel_opregion *opregion = &dev_priv->opregion; 514 515 if (!opregion->header) 516 return; 517 518 if (opregion->acpi) { 519 opregion->acpi->drdy = 0; 520 521 system_opregion = NULL; 522#if 0 523 unregister_acpi_notifier(&intel_opregion_notifier); 524#endif 525 } 526 527 /* just clear all opregion memory pointers now */ 528 pmap_unmapdev((vm_offset_t)opregion->header, OPREGION_SIZE); 529 opregion->header = NULL; 530 opregion->acpi = NULL; 531 opregion->swsci = NULL; 532 opregion->asle = NULL; 533 opregion->vbt = NULL; 534} 535#else 536void 537intel_opregion_init(struct drm_device *dev) 538{ 539} 540 541void 542intel_opregion_fini(struct drm_device *dev) 543{ 544 struct drm_i915_private *dev_priv; 545 struct intel_opregion *opregion; 546 547 dev_priv = dev->dev_private; 548 opregion = &dev_priv->opregion; 549 550 if (opregion->header == NULL) 551 return; 552 553 pmap_unmapdev((vm_offset_t)opregion->header, OPREGION_SIZE); 554 opregion->header = NULL; 555 opregion->acpi = NULL; 556 opregion->swsci = NULL; 557 opregion->asle = NULL; 558 opregion->vbt = NULL; 559} 560#endif 561 562int intel_opregion_setup(struct drm_device *dev) 563{ 564 struct drm_i915_private *dev_priv = dev->dev_private; 565 struct intel_opregion *opregion = &dev_priv->opregion; 566 char *base; 567 u32 asls, mboxes; 568 int err = 0; 569 570 asls = pci_read_config(dev->dev, PCI_ASLS, 4); 571 DRM_DEBUG("graphic opregion physical addr: 0x%x\n", asls); 572 if (asls == 0) { 573 DRM_DEBUG("ACPI OpRegion not supported!\n"); 574 return -ENOTSUP; 575 } 576 577 base = (void *)pmap_mapbios(asls, OPREGION_SIZE); 578 if (!base) 579 return -ENOMEM; 580 581 if (memcmp(base, OPREGION_SIGNATURE, 16)) { 582 DRM_DEBUG("opregion signature mismatch\n"); 583 err = -EINVAL; 584 goto err_out; 585 } 586 opregion->header = (struct opregion_header *)base; 587 opregion->vbt = base + OPREGION_VBT_OFFSET; 588 589 opregion->lid_state = (u32 *)(base + ACPI_CLID); 590 591 mboxes = opregion->header->mboxes; 592 if (mboxes & MBOX_ACPI) { 593 DRM_DEBUG("Public ACPI methods supported\n"); 594 opregion->acpi = (struct opregion_acpi *)(base + 595 OPREGION_ACPI_OFFSET); 596 } 597 598 if (mboxes & MBOX_SWSCI) { 599 DRM_DEBUG("SWSCI supported\n"); 600 opregion->swsci = (struct opregion_swsci *)(base + 601 OPREGION_SWSCI_OFFSET); 602 } 603 if (mboxes & MBOX_ASLE) { 604 DRM_DEBUG("ASLE supported\n"); 605 opregion->asle = (struct opregion_asle *)(base + 606 OPREGION_ASLE_OFFSET); 607 } 608 609 return 0; 610 611err_out: 612 pmap_unmapdev((vm_offset_t)base, OPREGION_SIZE); 613 return err; 614} 615