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sys/dev/acpica/acpi_video.c
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1 /*- 2 * Copyright (c) 2002-2003 Taku YAMAMOTO <taku@cent.saitama-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $Id: acpi_vid.c,v 1.4 2003/10/13 10:07:36 taku Exp $ 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/kernel.h> 34 #include <sys/malloc.h> 35 #include <sys/module.h> 36 #include <sys/bus.h> 37 #include <sys/power.h> 38 #include <sys/queue.h> 39 #include <sys/sysctl.h> 40 41 #include <contrib/dev/acpica/include/acpi.h> 42 43 #include <dev/acpica/acpivar.h> 44 45 /* ACPI video extension driver. */ 46 struct acpi_video_output { 47 ACPI_HANDLE handle; 48 UINT32 adr; 49 STAILQ_ENTRY(acpi_video_output) vo_next; 50 struct { 51 int num; 52 STAILQ_ENTRY(acpi_video_output) next; 53 } vo_unit; 54 int vo_hasbqc; /* Query method is present. */ 55 int vo_level; /* Cached level when !vo_hasbqc. */ 56 int vo_brightness; 57 int vo_fullpower; 58 int vo_economy; 59 int vo_numlevels; 60 int *vo_levels; 61 struct sysctl_ctx_list vo_sysctl_ctx; 62 struct sysctl_oid *vo_sysctl_tree; 63 }; 64 65 STAILQ_HEAD(acpi_video_output_queue, acpi_video_output); 66 67 struct acpi_video_softc { 68 device_t device; 69 ACPI_HANDLE handle; 70 struct acpi_video_output_queue vid_outputs; 71 eventhandler_tag vid_pwr_evh; 72 }; 73 74 /* interfaces */ 75 static int acpi_video_modevent(struct module*, int, void *); 76 static void acpi_video_identify(driver_t *driver, device_t parent); 77 static int acpi_video_probe(device_t); 78 static int acpi_video_attach(device_t); 79 static int acpi_video_detach(device_t); 80 static int acpi_video_resume(device_t); 81 static int acpi_video_shutdown(device_t); 82 static void acpi_video_notify_handler(ACPI_HANDLE, UINT32, void *); 83 static void acpi_video_power_profile(void *); 84 static void acpi_video_bind_outputs(struct acpi_video_softc *); 85 static struct acpi_video_output *acpi_video_vo_init(UINT32); 86 static void acpi_video_vo_bind(struct acpi_video_output *, ACPI_HANDLE); 87 static void acpi_video_vo_destroy(struct acpi_video_output *); 88 static int acpi_video_vo_check_level(struct acpi_video_output *, int); 89 static void acpi_video_vo_notify_handler(ACPI_HANDLE, UINT32, void *); 90 static int acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS); 91 static int acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS); 92 static int acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS); 93 static int acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS); 94 95 /* operations */ 96 static void vid_set_switch_policy(ACPI_HANDLE, UINT32); 97 static int vid_enum_outputs(ACPI_HANDLE, 98 void(*)(ACPI_HANDLE, UINT32, void *), void *); 99 static int vo_get_brightness_levels(ACPI_HANDLE, int **); 100 static int vo_get_brightness(struct acpi_video_output *); 101 static void vo_set_brightness(struct acpi_video_output *, int); 102 static UINT32 vo_get_device_status(ACPI_HANDLE); 103 static UINT32 vo_get_graphics_state(ACPI_HANDLE); 104 static void vo_set_device_state(ACPI_HANDLE, UINT32); 105 106 /* events */ 107 #define VID_NOTIFY_SWITCHED 0x80 108 #define VID_NOTIFY_REPROBE 0x81 109 #define VID_NOTIFY_CYCLE_BRN 0x85 110 #define VID_NOTIFY_INC_BRN 0x86 111 #define VID_NOTIFY_DEC_BRN 0x87 112 #define VID_NOTIFY_ZERO_BRN 0x88 113 114 /* _DOS (Enable/Disable Output Switching) argument bits */ 115 #define DOS_SWITCH_MASK 3 116 #define DOS_SWITCH_BY_OSPM 0 117 #define DOS_SWITCH_BY_BIOS 1 118 #define DOS_SWITCH_LOCKED 2 119 #define DOS_BRIGHTNESS_BY_OSPM (1 << 2) 120 121 /* _DOD and subdev's _ADR */ 122 #define DOD_DEVID_MASK 0x0f00 123 #define DOD_DEVID_MASK_FULL 0xffff 124 #define DOD_DEVID_MASK_DISPIDX 0x000f 125 #define DOD_DEVID_MASK_DISPPORT 0x00f0 126 #define DOD_DEVID_MONITOR 0x0100 127 #define DOD_DEVID_LCD 0x0110 128 #define DOD_DEVID_TV 0x0200 129 #define DOD_DEVID_EXT 0x0300 130 #define DOD_DEVID_INTDFP 0x0400 131 #define DOD_BIOS (1 << 16) 132 #define DOD_NONVGA (1 << 17) 133 #define DOD_HEAD_ID_SHIFT 18 134 #define DOD_HEAD_ID_BITS 3 135 #define DOD_HEAD_ID_MASK \ 136 (((1 << DOD_HEAD_ID_BITS) - 1) << DOD_HEAD_ID_SHIFT) 137 #define DOD_DEVID_SCHEME_STD (1U << 31) 138 139 /* _BCL related constants */ 140 #define BCL_FULLPOWER 0 141 #define BCL_ECONOMY 1 142 143 /* _DCS (Device Currrent Status) value bits and masks. */ 144 #define DCS_EXISTS (1 << 0) 145 #define DCS_ACTIVE (1 << 1) 146 #define DCS_READY (1 << 2) 147 #define DCS_FUNCTIONAL (1 << 3) 148 #define DCS_ATTACHED (1 << 4) 149 150 /* _DSS (Device Set Status) argument bits and masks. */ 151 #define DSS_INACTIVE 0 152 #define DSS_ACTIVE (1 << 0) 153 #define DSS_SETNEXT (1 << 30) 154 #define DSS_COMMIT (1U << 31) 155 156 static device_method_t acpi_video_methods[] = { 157 DEVMETHOD(device_identify, acpi_video_identify), 158 DEVMETHOD(device_probe, acpi_video_probe), 159 DEVMETHOD(device_attach, acpi_video_attach), 160 DEVMETHOD(device_detach, acpi_video_detach), 161 DEVMETHOD(device_resume, acpi_video_resume), 162 DEVMETHOD(device_shutdown, acpi_video_shutdown), 163 { 0, 0 } 164 }; 165 166 static driver_t acpi_video_driver = { 167 "acpi_video", 168 acpi_video_methods, 169 sizeof(struct acpi_video_softc), 170 }; 171 172 static devclass_t acpi_video_devclass; 173 174 DRIVER_MODULE(acpi_video, vgapci, acpi_video_driver, acpi_video_devclass, 175 acpi_video_modevent, NULL); 176 MODULE_DEPEND(acpi_video, acpi, 1, 1, 1); 177 178 static struct sysctl_ctx_list acpi_video_sysctl_ctx; 179 static struct sysctl_oid *acpi_video_sysctl_tree; 180 static struct acpi_video_output_queue crt_units, tv_units, 181 ext_units, lcd_units, other_units; 182 183 /* 184 * The 'video' lock protects the hierarchy of video output devices 185 * (the video "bus"). The 'video_output' lock protects per-output 186 * data is equivalent to a softc lock for each video output. 187 */ 188 ACPI_SERIAL_DECL(video, "ACPI video"); 189 ACPI_SERIAL_DECL(video_output, "ACPI video output"); 190 static MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension"); 191 192 static int 193 acpi_video_modevent(struct module *mod __unused, int evt, void *cookie __unused) 194 { 195 int err; 196 197 err = 0; 198 switch (evt) { 199 case MOD_LOAD: 200 sysctl_ctx_init(&acpi_video_sysctl_ctx); 201 STAILQ_INIT(&crt_units); 202 STAILQ_INIT(&tv_units); 203 STAILQ_INIT(&ext_units); 204 STAILQ_INIT(&lcd_units); 205 STAILQ_INIT(&other_units); 206 break; 207 case MOD_UNLOAD: 208 sysctl_ctx_free(&acpi_video_sysctl_ctx); 209 acpi_video_sysctl_tree = NULL; 210 break; 211 default: 212 err = EINVAL; 213 } 214 215 return (err); 216 } 217 218 static void 219 acpi_video_identify(driver_t *driver, device_t parent) 220 { 221 222 if (device_find_child(parent, "acpi_video", -1) == NULL) 223 device_add_child(parent, "acpi_video", -1); 224 } 225 226 static int 227 acpi_video_probe(device_t dev) 228 { 229 ACPI_HANDLE devh, h; 230 ACPI_OBJECT_TYPE t_dos; 231 232 devh = acpi_get_handle(dev); 233 if (acpi_disabled("video") || 234 ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 235 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h)) || 236 ACPI_FAILURE(AcpiGetType(h, &t_dos)) || 237 t_dos != ACPI_TYPE_METHOD) 238 return (ENXIO); 239 240 device_set_desc(dev, "ACPI video extension"); 241 return (0); 242 } 243 244 static int 245 acpi_video_attach(device_t dev) 246 { 247 struct acpi_softc *acpi_sc; 248 struct acpi_video_softc *sc; 249 250 sc = device_get_softc(dev); 251 252 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 253 if (acpi_sc == NULL) 254 return (ENXIO); 255 ACPI_SERIAL_BEGIN(video); 256 if (acpi_video_sysctl_tree == NULL) { 257 acpi_video_sysctl_tree = SYSCTL_ADD_NODE(&acpi_video_sysctl_ctx, 258 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 259 OID_AUTO, "video", CTLFLAG_RD, 0, 260 "video extension control"); 261 } 262 ACPI_SERIAL_END(video); 263 264 sc->device = dev; 265 sc->handle = acpi_get_handle(dev); 266 STAILQ_INIT(&sc->vid_outputs); 267 268 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 269 acpi_video_notify_handler, sc); 270 sc->vid_pwr_evh = EVENTHANDLER_REGISTER(power_profile_change, 271 acpi_video_power_profile, sc, 0); 272 273 ACPI_SERIAL_BEGIN(video); 274 acpi_video_bind_outputs(sc); 275 ACPI_SERIAL_END(video); 276 277 /* 278 * Notify the BIOS that we want to switch both active outputs and 279 * brightness levels. 280 */ 281 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_OSPM | 282 DOS_BRIGHTNESS_BY_OSPM); 283 284 acpi_video_power_profile(sc); 285 286 return (0); 287 } 288 289 static int 290 acpi_video_detach(device_t dev) 291 { 292 struct acpi_video_softc *sc; 293 struct acpi_video_output *vo, *vn; 294 295 sc = device_get_softc(dev); 296 297 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 298 EVENTHANDLER_DEREGISTER(power_profile_change, sc->vid_pwr_evh); 299 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 300 acpi_video_notify_handler); 301 302 ACPI_SERIAL_BEGIN(video); 303 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vn) { 304 acpi_video_vo_destroy(vo); 305 } 306 ACPI_SERIAL_END(video); 307 308 return (0); 309 } 310 311 static int 312 acpi_video_resume(device_t dev) 313 { 314 struct acpi_video_softc *sc; 315 struct acpi_video_output *vo, *vn; 316 int level; 317 318 sc = device_get_softc(dev); 319 320 /* Restore brightness level */ 321 ACPI_SERIAL_BEGIN(video); 322 ACPI_SERIAL_BEGIN(video_output); 323 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vn) { 324 if ((vo->adr & DOD_DEVID_MASK_FULL) != DOD_DEVID_LCD && 325 (vo->adr & DOD_DEVID_MASK) != DOD_DEVID_INTDFP) 326 continue; 327 328 if ((vo_get_device_status(vo->handle) & DCS_ACTIVE) == 0) 329 continue; 330 331 level = vo_get_brightness(vo); 332 if (level != -1) 333 vo_set_brightness(vo, level); 334 } 335 ACPI_SERIAL_END(video_output); 336 ACPI_SERIAL_END(video); 337 338 return (0); 339 } 340 341 static int 342 acpi_video_shutdown(device_t dev) 343 { 344 struct acpi_video_softc *sc; 345 346 sc = device_get_softc(dev); 347 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 348 349 return (0); 350 } 351 352 static void 353 acpi_video_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 354 { 355 struct acpi_video_softc *sc; 356 struct acpi_video_output *vo, *vo_tmp; 357 ACPI_HANDLE lasthand; 358 UINT32 dcs, dss, dss_p; 359 360 sc = (struct acpi_video_softc *)context; 361 362 switch (notify) { 363 case VID_NOTIFY_SWITCHED: 364 dss_p = 0; 365 lasthand = NULL; 366 ACPI_SERIAL_BEGIN(video); 367 ACPI_SERIAL_BEGIN(video_output); 368 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 369 dss = vo_get_graphics_state(vo->handle); 370 dcs = vo_get_device_status(vo->handle); 371 if (!(dcs & DCS_READY)) 372 dss = DSS_INACTIVE; 373 if (((dcs & DCS_ACTIVE) && dss == DSS_INACTIVE) || 374 (!(dcs & DCS_ACTIVE) && dss == DSS_ACTIVE)) { 375 if (lasthand != NULL) 376 vo_set_device_state(lasthand, dss_p); 377 dss_p = dss; 378 lasthand = vo->handle; 379 } 380 } 381 if (lasthand != NULL) 382 vo_set_device_state(lasthand, dss_p|DSS_COMMIT); 383 ACPI_SERIAL_END(video_output); 384 ACPI_SERIAL_END(video); 385 break; 386 case VID_NOTIFY_REPROBE: 387 ACPI_SERIAL_BEGIN(video); 388 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) 389 vo->handle = NULL; 390 acpi_video_bind_outputs(sc); 391 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vo_tmp) { 392 if (vo->handle == NULL) { 393 STAILQ_REMOVE(&sc->vid_outputs, vo, 394 acpi_video_output, vo_next); 395 acpi_video_vo_destroy(vo); 396 } 397 } 398 ACPI_SERIAL_END(video); 399 break; 400 default: 401 device_printf(sc->device, "unknown notify event 0x%x\n", 402 notify); 403 } 404 } 405 406 static void 407 acpi_video_power_profile(void *context) 408 { 409 int state; 410 struct acpi_video_softc *sc; 411 struct acpi_video_output *vo; 412 413 sc = context; 414 state = power_profile_get_state(); 415 if (state != POWER_PROFILE_PERFORMANCE && 416 state != POWER_PROFILE_ECONOMY) 417 return; 418 419 ACPI_SERIAL_BEGIN(video); 420 ACPI_SERIAL_BEGIN(video_output); 421 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 422 if (vo->vo_levels != NULL && vo->vo_brightness == -1) 423 vo_set_brightness(vo, 424 state == POWER_PROFILE_ECONOMY ? 425 vo->vo_economy : vo->vo_fullpower); 426 } 427 ACPI_SERIAL_END(video_output); 428 ACPI_SERIAL_END(video); 429 } 430 431 static void 432 acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT32 adr, void *context) 433 { 434 struct acpi_video_softc *sc; 435 struct acpi_video_output *vo; 436 437 ACPI_SERIAL_ASSERT(video); 438 sc = context; 439 440 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 441 if (vo->adr == adr) { 442 acpi_video_vo_bind(vo, handle); 443 return; 444 } 445 } 446 vo = acpi_video_vo_init(adr); 447 if (vo != NULL) { 448 acpi_video_vo_bind(vo, handle); 449 STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next); 450 } 451 } 452 453 static void 454 acpi_video_bind_outputs(struct acpi_video_softc *sc) 455 { 456 457 ACPI_SERIAL_ASSERT(video); 458 vid_enum_outputs(sc->handle, acpi_video_bind_outputs_subr, sc); 459 } 460 461 static struct acpi_video_output * 462 acpi_video_vo_init(UINT32 adr) 463 { 464 struct acpi_video_output *vn, *vo, *vp; 465 int n, x; 466 char name[8], env[32]; 467 const char *type, *desc; 468 struct acpi_video_output_queue *voqh; 469 470 ACPI_SERIAL_ASSERT(video); 471 472 switch (adr & DOD_DEVID_MASK) { 473 case DOD_DEVID_MONITOR: 474 if ((adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) { 475 /* DOD_DEVID_LCD is a common, backward compatible ID */ 476 desc = "Internal/Integrated Digital Flat Panel"; 477 type = "lcd"; 478 voqh = &lcd_units; 479 } else { 480 desc = "VGA CRT or VESA Compatible Analog Monitor"; 481 type = "crt"; 482 voqh = &crt_units; 483 } 484 break; 485 case DOD_DEVID_TV: 486 desc = "TV/HDTV or Analog-Video Monitor"; 487 type = "tv"; 488 voqh = &tv_units; 489 break; 490 case DOD_DEVID_EXT: 491 desc = "External Digital Monitor"; 492 type = "ext"; 493 voqh = &ext_units; 494 break; 495 case DOD_DEVID_INTDFP: 496 desc = "Internal/Integrated Digital Flat Panel"; 497 type = "lcd"; 498 voqh = &lcd_units; 499 break; 500 default: 501 desc = "unknown output"; 502 type = "out"; 503 voqh = &other_units; 504 } 505 506 n = 0; 507 vp = NULL; 508 STAILQ_FOREACH(vn, voqh, vo_unit.next) { 509 if (vn->vo_unit.num != n) 510 break; 511 vp = vn; 512 n++; 513 } 514 515 snprintf(name, sizeof(name), "%s%d", type, n); 516 517 vo = malloc(sizeof(*vo), M_ACPIVIDEO, M_NOWAIT); 518 if (vo != NULL) { 519 vo->handle = NULL; 520 vo->adr = adr; 521 vo->vo_unit.num = n; 522 vo->vo_hasbqc = -1; 523 vo->vo_level = -1; 524 vo->vo_brightness = -1; 525 vo->vo_fullpower = -1; /* TODO: override with tunables */ 526 vo->vo_economy = -1; 527 vo->vo_numlevels = 0; 528 vo->vo_levels = NULL; 529 snprintf(env, sizeof(env), "hw.acpi.video.%s.fullpower", name); 530 if (getenv_int(env, &x)) 531 vo->vo_fullpower = x; 532 snprintf(env, sizeof(env), "hw.acpi.video.%s.economy", name); 533 if (getenv_int(env, &x)) 534 vo->vo_economy = x; 535 536 sysctl_ctx_init(&vo->vo_sysctl_ctx); 537 if (vp != NULL) 538 STAILQ_INSERT_AFTER(voqh, vp, vo, vo_unit.next); 539 else 540 STAILQ_INSERT_TAIL(voqh, vo, vo_unit.next); 541 if (acpi_video_sysctl_tree != NULL) 542 vo->vo_sysctl_tree = 543 SYSCTL_ADD_NODE(&vo->vo_sysctl_ctx, 544 SYSCTL_CHILDREN(acpi_video_sysctl_tree), 545 OID_AUTO, name, CTLFLAG_RD, 0, desc); 546 if (vo->vo_sysctl_tree != NULL) { 547 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 548 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 549 OID_AUTO, "active", 550 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 551 acpi_video_vo_active_sysctl, "I", 552 "current activity of this device"); 553 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 554 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 555 OID_AUTO, "brightness", 556 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 557 acpi_video_vo_bright_sysctl, "I", 558 "current brightness level"); 559 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 560 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 561 OID_AUTO, "fullpower", 562 CTLTYPE_INT|CTLFLAG_RW, vo, 563 POWER_PROFILE_PERFORMANCE, 564 acpi_video_vo_presets_sysctl, "I", 565 "preset level for full power mode"); 566 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 567 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 568 OID_AUTO, "economy", 569 CTLTYPE_INT|CTLFLAG_RW, vo, 570 POWER_PROFILE_ECONOMY, 571 acpi_video_vo_presets_sysctl, "I", 572 "preset level for economy mode"); 573 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 574 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 575 OID_AUTO, "levels", 576 CTLTYPE_INT | CTLFLAG_RD, vo, 0, 577 acpi_video_vo_levels_sysctl, "I", 578 "supported brightness levels"); 579 } else 580 printf("%s: sysctl node creation failed\n", type); 581 } else 582 printf("%s: softc allocation failed\n", type); 583 584 if (bootverbose) { 585 printf("found %s(%x)", desc, adr & DOD_DEVID_MASK_FULL); 586 printf(", idx#%x", adr & DOD_DEVID_MASK_DISPIDX); 587 printf(", port#%x", (adr & DOD_DEVID_MASK_DISPPORT) >> 4); 588 if (adr & DOD_BIOS) 589 printf(", detectable by BIOS"); 590 if (adr & DOD_NONVGA) 591 printf(" (Non-VGA output device whose power " 592 "is related to the VGA device)"); 593 printf(", head #%d\n", 594 (adr & DOD_HEAD_ID_MASK) >> DOD_HEAD_ID_SHIFT); 595 } 596 return (vo); 597 } 598 599 static void 600 acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle) 601 { 602 603 ACPI_SERIAL_BEGIN(video_output); 604 if (vo->vo_levels != NULL) { 605 AcpiRemoveNotifyHandler(vo->handle, ACPI_DEVICE_NOTIFY, 606 acpi_video_vo_notify_handler); 607 AcpiOsFree(vo->vo_levels); 608 vo->vo_levels = NULL; 609 } 610 vo->handle = handle; 611 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels); 612 if (vo->vo_numlevels >= 2) { 613 if (vo->vo_fullpower == -1 || 614 acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) { 615 /* XXX - can't deal with rebinding... */ 616 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER]; 617 } 618 if (vo->vo_economy == -1 || 619 acpi_video_vo_check_level(vo, vo->vo_economy) != 0) { 620 /* XXX - see above. */ 621 vo->vo_economy = vo->vo_levels[BCL_ECONOMY]; 622 } 623 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY, 624 acpi_video_vo_notify_handler, vo); 625 } 626 ACPI_SERIAL_END(video_output); 627 } 628 629 static void 630 acpi_video_vo_destroy(struct acpi_video_output *vo) 631 { 632 struct acpi_video_output_queue *voqh; 633 634 ACPI_SERIAL_ASSERT(video); 635 if (vo->vo_sysctl_tree != NULL) { 636 vo->vo_sysctl_tree = NULL; 637 sysctl_ctx_free(&vo->vo_sysctl_ctx); 638 } 639 if (vo->vo_levels != NULL) { 640 AcpiRemoveNotifyHandler(vo->handle, ACPI_DEVICE_NOTIFY, 641 acpi_video_vo_notify_handler); 642 AcpiOsFree(vo->vo_levels); 643 } 644 645 switch (vo->adr & DOD_DEVID_MASK) { 646 case DOD_DEVID_MONITOR: 647 if ((vo->adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) 648 voqh = &lcd_units; 649 else 650 voqh = &crt_units; 651 break; 652 case DOD_DEVID_TV: 653 voqh = &tv_units; 654 break; 655 case DOD_DEVID_EXT: 656 voqh = &ext_units; 657 break; 658 case DOD_DEVID_INTDFP: 659 voqh = &lcd_units; 660 break; 661 default: 662 voqh = &other_units; 663 } 664 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next); 665 free(vo, M_ACPIVIDEO); 666 } 667 668 static int 669 acpi_video_vo_check_level(struct acpi_video_output *vo, int level) 670 { 671 int i; 672 673 ACPI_SERIAL_ASSERT(video_output); 674 if (vo->vo_levels == NULL) 675 return (ENODEV); 676 for (i = 0; i < vo->vo_numlevels; i++) 677 if (vo->vo_levels[i] == level) 678 return (0); 679 return (EINVAL); 680 } 681 682 static void 683 acpi_video_vo_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 684 { 685 struct acpi_video_output *vo; 686 int i, j, level, new_level; 687 688 vo = context; 689 ACPI_SERIAL_BEGIN(video_output); 690 if (vo->handle != handle) 691 goto out; 692 693 switch (notify) { 694 case VID_NOTIFY_CYCLE_BRN: 695 if (vo->vo_numlevels <= 3) 696 goto out; 697 /* FALLTHROUGH */ 698 case VID_NOTIFY_INC_BRN: 699 case VID_NOTIFY_DEC_BRN: 700 case VID_NOTIFY_ZERO_BRN: 701 if (vo->vo_levels == NULL) 702 goto out; 703 level = vo_get_brightness(vo); 704 if (level < 0) 705 goto out; 706 break; 707 default: 708 printf("unknown notify event 0x%x from %s\n", 709 notify, acpi_name(handle)); 710 goto out; 711 } 712 713 new_level = level; 714 switch (notify) { 715 case VID_NOTIFY_CYCLE_BRN: 716 for (i = 2; i < vo->vo_numlevels; i++) 717 if (vo->vo_levels[i] == level) { 718 new_level = vo->vo_numlevels > i + 1 ? 719 vo->vo_levels[i + 1] : vo->vo_levels[2]; 720 break; 721 } 722 break; 723 case VID_NOTIFY_INC_BRN: 724 case VID_NOTIFY_DEC_BRN: 725 for (i = 0; i < vo->vo_numlevels; i++) { 726 j = vo->vo_levels[i]; 727 if (notify == VID_NOTIFY_INC_BRN) { 728 if (j > level && 729 (j < new_level || level == new_level)) 730 new_level = j; 731 } else { 732 if (j < level && 733 (j > new_level || level == new_level)) 734 new_level = j; 735 } 736 } 737 break; 738 case VID_NOTIFY_ZERO_BRN: 739 for (i = 0; i < vo->vo_numlevels; i++) 740 if (vo->vo_levels[i] == 0) { 741 new_level = 0; 742 break; 743 } 744 break; 745 } 746 if (new_level != level) { 747 vo_set_brightness(vo, new_level); 748 vo->vo_brightness = new_level; 749 } 750 751 out: 752 ACPI_SERIAL_END(video_output); 753 } 754 755 /* ARGSUSED */ 756 static int 757 acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS) 758 { 759 struct acpi_video_output *vo; 760 int state, err; 761 762 vo = (struct acpi_video_output *)arg1; 763 if (vo->handle == NULL) 764 return (ENXIO); 765 ACPI_SERIAL_BEGIN(video_output); 766 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0; 767 err = sysctl_handle_int(oidp, &state, 0, req); 768 if (err != 0 || req->newptr == NULL) 769 goto out; 770 vo_set_device_state(vo->handle, 771 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE)); 772 out: 773 ACPI_SERIAL_END(video_output); 774 return (err); 775 } 776 777 /* ARGSUSED */ 778 static int 779 acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS) 780 { 781 struct acpi_video_output *vo; 782 int level, preset, err; 783 784 vo = (struct acpi_video_output *)arg1; 785 ACPI_SERIAL_BEGIN(video_output); 786 if (vo->handle == NULL) { 787 err = ENXIO; 788 goto out; 789 } 790 if (vo->vo_levels == NULL) { 791 err = ENODEV; 792 goto out; 793 } 794 795 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ? 796 vo->vo_economy : vo->vo_fullpower; 797 level = vo->vo_brightness; 798 if (level == -1) 799 level = preset; 800 801 err = sysctl_handle_int(oidp, &level, 0, req); 802 if (err != 0 || req->newptr == NULL) 803 goto out; 804 if (level < -1 || level > 100) { 805 err = EINVAL; 806 goto out; 807 } 808 809 if (level != -1 && (err = acpi_video_vo_check_level(vo, level))) 810 goto out; 811 vo->vo_brightness = level; 812 vo_set_brightness(vo, (level == -1) ? preset : level); 813 814 out: 815 ACPI_SERIAL_END(video_output); 816 return (err); 817 } 818 819 static int 820 acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS) 821 { 822 struct acpi_video_output *vo; 823 int i, level, *preset, err; 824 825 vo = (struct acpi_video_output *)arg1; 826 ACPI_SERIAL_BEGIN(video_output); 827 if (vo->handle == NULL) { 828 err = ENXIO; 829 goto out; 830 } 831 if (vo->vo_levels == NULL) { 832 err = ENODEV; 833 goto out; 834 } 835 preset = (arg2 == POWER_PROFILE_ECONOMY) ? 836 &vo->vo_economy : &vo->vo_fullpower; 837 level = *preset; 838 err = sysctl_handle_int(oidp, &level, 0, req); 839 if (err != 0 || req->newptr == NULL) 840 goto out; 841 if (level < -1 || level > 100) { 842 err = EINVAL; 843 goto out; 844 } 845 if (level == -1) { 846 i = (arg2 == POWER_PROFILE_ECONOMY) ? 847 BCL_ECONOMY : BCL_FULLPOWER; 848 level = vo->vo_levels[i]; 849 } else if ((err = acpi_video_vo_check_level(vo, level)) != 0) 850 goto out; 851 852 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2)) 853 vo_set_brightness(vo, level); 854 *preset = level; 855 856 out: 857 ACPI_SERIAL_END(video_output); 858 return (err); 859 } 860 861 /* ARGSUSED */ 862 static int 863 acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS) 864 { 865 struct acpi_video_output *vo; 866 int err; 867 868 vo = (struct acpi_video_output *)arg1; 869 ACPI_SERIAL_BEGIN(video_output); 870 if (vo->vo_levels == NULL) { 871 err = ENODEV; 872 goto out; 873 } 874 if (req->newptr != NULL) { 875 err = EPERM; 876 goto out; 877 } 878 err = sysctl_handle_opaque(oidp, vo->vo_levels, 879 vo->vo_numlevels * sizeof(*vo->vo_levels), req); 880 881 out: 882 ACPI_SERIAL_END(video_output); 883 return (err); 884 } 885 886 static void 887 vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy) 888 { 889 ACPI_STATUS status; 890 891 status = acpi_SetInteger(handle, "_DOS", policy); 892 if (ACPI_FAILURE(status)) 893 printf("can't evaluate %s._DOS - %s\n", 894 acpi_name(handle), AcpiFormatException(status)); 895 } 896 897 struct enum_callback_arg { 898 void (*callback)(ACPI_HANDLE, UINT32, void *); 899 void *context; 900 ACPI_OBJECT *dod_pkg; 901 int count; 902 }; 903 904 static ACPI_STATUS 905 vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused, 906 void *context, void **retp __unused) 907 { 908 ACPI_STATUS status; 909 UINT32 adr, val; 910 struct enum_callback_arg *argset; 911 size_t i; 912 913 ACPI_SERIAL_ASSERT(video); 914 argset = context; 915 status = acpi_GetInteger(handle, "_ADR", &adr); 916 if (ACPI_FAILURE(status)) 917 return (AE_OK); 918 919 for (i = 0; i < argset->dod_pkg->Package.Count; i++) { 920 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 && 921 (val & DOD_DEVID_MASK_FULL) == 922 (adr & DOD_DEVID_MASK_FULL)) { 923 argset->callback(handle, val, argset->context); 924 argset->count++; 925 } 926 } 927 928 return (AE_OK); 929 } 930 931 static int 932 vid_enum_outputs(ACPI_HANDLE handle, 933 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context) 934 { 935 ACPI_STATUS status; 936 ACPI_BUFFER dod_buf; 937 ACPI_OBJECT *res; 938 struct enum_callback_arg argset; 939 940 ACPI_SERIAL_ASSERT(video); 941 dod_buf.Length = ACPI_ALLOCATE_BUFFER; 942 dod_buf.Pointer = NULL; 943 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf); 944 if (ACPI_FAILURE(status)) { 945 if (status != AE_NOT_FOUND) 946 printf("can't evaluate %s._DOD - %s\n", 947 acpi_name(handle), AcpiFormatException(status)); 948 argset.count = -1; 949 goto out; 950 } 951 res = (ACPI_OBJECT *)dod_buf.Pointer; 952 if (!ACPI_PKG_VALID(res, 1)) { 953 printf("evaluation of %s._DOD makes no sense\n", 954 acpi_name(handle)); 955 argset.count = -1; 956 goto out; 957 } 958 if (callback == NULL) { 959 argset.count = res->Package.Count; 960 goto out; 961 } 962 argset.callback = callback; 963 argset.context = context; 964 argset.dod_pkg = res; 965 argset.count = 0; 966 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1, 967 vid_enum_outputs_subr, NULL, &argset, NULL); 968 if (ACPI_FAILURE(status)) 969 printf("failed walking down %s - %s\n", 970 acpi_name(handle), AcpiFormatException(status)); 971 out: 972 if (dod_buf.Pointer != NULL) 973 AcpiOsFree(dod_buf.Pointer); 974 return (argset.count); 975 } 976 977 static int 978 vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp) 979 { 980 ACPI_STATUS status; 981 ACPI_BUFFER bcl_buf; 982 ACPI_OBJECT *res; 983 int num, i, n, *levels; 984 985 bcl_buf.Length = ACPI_ALLOCATE_BUFFER; 986 bcl_buf.Pointer = NULL; 987 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf); 988 if (ACPI_FAILURE(status)) { 989 if (status != AE_NOT_FOUND) 990 printf("can't evaluate %s._BCL - %s\n", 991 acpi_name(handle), AcpiFormatException(status)); 992 goto out; 993 } 994 res = (ACPI_OBJECT *)bcl_buf.Pointer; 995 if (!ACPI_PKG_VALID(res, 2)) { 996 printf("evaluation of %s._BCL makes no sense\n", 997 acpi_name(handle)); 998 goto out; 999 } 1000 num = res->Package.Count; 1001 if (num < 2 || levelp == NULL) 1002 goto out; 1003 levels = AcpiOsAllocate(num * sizeof(*levels)); 1004 if (levels == NULL) 1005 goto out; 1006 for (i = 0, n = 0; i < num; i++) 1007 if (acpi_PkgInt32(res, i, &levels[n]) == 0) 1008 n++; 1009 if (n < 2) { 1010 AcpiOsFree(levels); 1011 goto out; 1012 } 1013 *levelp = levels; 1014 return (n); 1015 1016 out: 1017 if (bcl_buf.Pointer != NULL) 1018 AcpiOsFree(bcl_buf.Pointer); 1019 return (0); 1020 } 1021 1022 static int 1023 vo_get_bqc(struct acpi_video_output *vo, UINT32 *level) 1024 { 1025 ACPI_STATUS status; 1026 1027 switch (vo->vo_hasbqc) { 1028 case 1: 1029 case -1: 1030 status = acpi_GetInteger(vo->handle, "_BQC", level); 1031 if (vo->vo_hasbqc == 1) 1032 break; 1033 vo->vo_hasbqc = status != AE_NOT_FOUND; 1034 if (vo->vo_hasbqc == 1) 1035 break; 1036 /* FALLTHROUGH */ 1037 default: 1038 KASSERT(vo->vo_hasbqc == 0, 1039 ("bad vo_hasbqc state %d", vo->vo_hasbqc)); 1040 *level = vo->vo_level; 1041 status = AE_OK; 1042 } 1043 return (status); 1044 } 1045 1046 static int 1047 vo_get_brightness(struct acpi_video_output *vo) 1048 { 1049 UINT32 level; 1050 ACPI_STATUS status; 1051 1052 ACPI_SERIAL_ASSERT(video_output); 1053 status = vo_get_bqc(vo, &level); 1054 if (ACPI_FAILURE(status)) { 1055 printf("can't evaluate %s._BQC - %s\n", acpi_name(vo->handle), 1056 AcpiFormatException(status)); 1057 return (-1); 1058 } 1059 if (level > 100) 1060 return (-1); 1061 1062 return (level); 1063 } 1064 1065 static void 1066 vo_set_brightness(struct acpi_video_output *vo, int level) 1067 { 1068 char notify_buf[16]; 1069 ACPI_STATUS status; 1070 1071 ACPI_SERIAL_ASSERT(video_output); 1072 status = acpi_SetInteger(vo->handle, "_BCM", level); 1073 if (ACPI_FAILURE(status)) { 1074 printf("can't evaluate %s._BCM - %s\n", 1075 acpi_name(vo->handle), AcpiFormatException(status)); 1076 } else { 1077 vo->vo_level = level; 1078 } 1079 snprintf(notify_buf, sizeof(notify_buf), "notify=%d", level); 1080 devctl_notify("ACPI", "Video", "brightness", notify_buf); 1081 } 1082 1083 static UINT32 1084 vo_get_device_status(ACPI_HANDLE handle) 1085 { 1086 UINT32 dcs; 1087 ACPI_STATUS status; 1088 1089 ACPI_SERIAL_ASSERT(video_output); 1090 dcs = 0; 1091 status = acpi_GetInteger(handle, "_DCS", &dcs); 1092 if (ACPI_FAILURE(status)) { 1093 /* 1094 * If the method is missing, assume that the device is always 1095 * operational. 1096 */ 1097 if (status != AE_NOT_FOUND) { 1098 printf("can't evaluate %s._DCS - %s\n", 1099 acpi_name(handle), AcpiFormatException(status)); 1100 } else { 1101 dcs = 0xff; 1102 } 1103 } 1104 1105 return (dcs); 1106 } 1107 1108 static UINT32 1109 vo_get_graphics_state(ACPI_HANDLE handle) 1110 { 1111 UINT32 dgs; 1112 ACPI_STATUS status; 1113 1114 dgs = 0; 1115 status = acpi_GetInteger(handle, "_DGS", &dgs); 1116 if (ACPI_FAILURE(status)) { 1117 /* 1118 * If the method is missing, assume that the device is always 1119 * operational. 1120 */ 1121 if (status != AE_NOT_FOUND) { 1122 printf("can't evaluate %s._DGS - %s\n", 1123 acpi_name(handle), AcpiFormatException(status)); 1124 } else { 1125 dgs = 0xff; 1126 } 1127 } 1128 1129 return (dgs); 1130 } 1131 1132 static void 1133 vo_set_device_state(ACPI_HANDLE handle, UINT32 state) 1134 { 1135 ACPI_STATUS status; 1136 1137 ACPI_SERIAL_ASSERT(video_output); 1138 status = acpi_SetInteger(handle, "_DSS", state); 1139 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) 1140 printf("can't evaluate %s._DSS - %s\n", 1141 acpi_name(handle), AcpiFormatException(status)); 1142 }
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