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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: releng/6.4/sys/dev/acpica/acpi_video.c 161361 2006-08-16 13:51:05Z bruno $"); 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/acpi.h> 42 #include <dev/acpica/acpivar.h> 43 44 /* ACPI video extension driver. */ 45 struct acpi_video_output { 46 ACPI_HANDLE handle; 47 UINT32 adr; 48 STAILQ_ENTRY(acpi_video_output) vo_next; 49 struct { 50 int num; 51 STAILQ_ENTRY(acpi_video_output) next; 52 } vo_unit; 53 int vo_brightness; 54 int vo_fullpower; 55 int vo_economy; 56 int vo_numlevels; 57 int *vo_levels; 58 struct sysctl_ctx_list vo_sysctl_ctx; 59 struct sysctl_oid *vo_sysctl_tree; 60 }; 61 62 STAILQ_HEAD(acpi_video_output_queue, acpi_video_output); 63 64 struct acpi_video_softc { 65 device_t device; 66 ACPI_HANDLE handle; 67 struct acpi_video_output_queue vid_outputs; 68 eventhandler_tag vid_pwr_evh; 69 }; 70 71 /* interfaces */ 72 static int acpi_video_modevent(struct module*, int, void *); 73 static int acpi_video_probe(device_t); 74 static int acpi_video_attach(device_t); 75 static int acpi_video_detach(device_t); 76 static int acpi_video_shutdown(device_t); 77 static void acpi_video_notify_handler(ACPI_HANDLE, UINT32, void *); 78 static void acpi_video_power_profile(void *); 79 static void acpi_video_bind_outputs(struct acpi_video_softc *); 80 static struct acpi_video_output *acpi_video_vo_init(UINT32); 81 static void acpi_video_vo_bind(struct acpi_video_output *, ACPI_HANDLE); 82 static void acpi_video_vo_destroy(struct acpi_video_output *); 83 static int acpi_video_vo_check_level(struct acpi_video_output *, int); 84 static int acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS); 85 static int acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS); 86 static int acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS); 87 static int acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS); 88 89 /* operations */ 90 static void vid_set_switch_policy(ACPI_HANDLE, UINT32); 91 static int vid_enum_outputs(ACPI_HANDLE, 92 void(*)(ACPI_HANDLE, UINT32, void *), void *); 93 static int vo_get_brightness_levels(ACPI_HANDLE, int **); 94 static void vo_set_brightness(ACPI_HANDLE, int); 95 static UINT32 vo_get_device_status(ACPI_HANDLE); 96 static UINT32 vo_get_graphics_state(ACPI_HANDLE); 97 static void vo_set_device_state(ACPI_HANDLE, UINT32); 98 99 /* events */ 100 #define VID_NOTIFY_SWITCHED 0x80 101 #define VID_NOTIFY_REPROBE 0x81 102 103 /* _DOS (Enable/Disable Output Switching) argument bits */ 104 #define DOS_SWITCH_MASK 3 105 #define DOS_SWITCH_BY_OSPM 0 106 #define DOS_SWITCH_BY_BIOS 1 107 #define DOS_SWITCH_LOCKED 2 108 #define DOS_BRIGHTNESS_BY_BIOS (1 << 2) 109 110 /* _DOD and subdev's _ADR */ 111 #define DOD_DEVID_MASK 0x0f00 112 #define DOD_DEVID_MASK_FULL 0xffff 113 #define DOD_DEVID_MASK_DISPIDX 0x000f 114 #define DOD_DEVID_MASK_DISPPORT 0x00f0 115 #define DOD_DEVID_MONITOR 0x0100 116 #define DOD_DEVID_LCD 0x0110 117 #define DOD_DEVID_TV 0x0200 118 #define DOD_DEVID_EXT 0x0300 119 #define DOD_DEVID_INTDFP 0x0400 120 #define DOD_BIOS (1 << 16) 121 #define DOD_NONVGA (1 << 17) 122 #define DOD_HEAD_ID_SHIFT 18 123 #define DOD_HEAD_ID_BITS 3 124 #define DOD_HEAD_ID_MASK \ 125 (((1 << DOD_HEAD_ID_BITS) - 1) << DOD_HEAD_ID_SHIFT) 126 #define DOD_DEVID_SCHEME_STD (1 << 31) 127 128 /* _BCL related constants */ 129 #define BCL_FULLPOWER 0 130 #define BCL_ECONOMY 1 131 132 /* _DCS (Device Currrent Status) value bits and masks. */ 133 #define DCS_EXISTS (1 << 0) 134 #define DCS_ACTIVE (1 << 1) 135 #define DCS_READY (1 << 2) 136 #define DCS_FUNCTIONAL (1 << 3) 137 #define DCS_ATTACHED (1 << 4) 138 139 /* _DSS (Device Set Status) argument bits and masks. */ 140 #define DSS_INACTIVE 0 141 #define DSS_ACTIVE (1 << 0) 142 #define DSS_SETNEXT (1 << 30) 143 #define DSS_COMMIT (1 << 31) 144 145 static device_method_t acpi_video_methods[] = { 146 DEVMETHOD(device_probe, acpi_video_probe), 147 DEVMETHOD(device_attach, acpi_video_attach), 148 DEVMETHOD(device_detach, acpi_video_detach), 149 DEVMETHOD(device_shutdown, acpi_video_shutdown), 150 { 0, 0 } 151 }; 152 153 static driver_t acpi_video_driver = { 154 "acpi_video", 155 acpi_video_methods, 156 sizeof(struct acpi_video_softc), 157 }; 158 159 static devclass_t acpi_video_devclass; 160 161 DRIVER_MODULE(acpi_video, pci, acpi_video_driver, acpi_video_devclass, 162 acpi_video_modevent, NULL); 163 MODULE_DEPEND(acpi_video, acpi, 1, 1, 1); 164 165 static struct sysctl_ctx_list acpi_video_sysctl_ctx; 166 static struct sysctl_oid *acpi_video_sysctl_tree; 167 static struct acpi_video_output_queue crt_units, tv_units, 168 ext_units, lcd_units, other_units; 169 170 ACPI_SERIAL_DECL(video, "ACPI video"); 171 MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension"); 172 173 static int 174 acpi_video_modevent(struct module *mod __unused, int evt, void *cookie __unused) 175 { 176 int err; 177 178 err = 0; 179 switch (evt) { 180 case MOD_LOAD: 181 sysctl_ctx_init(&acpi_video_sysctl_ctx); 182 STAILQ_INIT(&crt_units); 183 STAILQ_INIT(&tv_units); 184 STAILQ_INIT(&ext_units); 185 STAILQ_INIT(&lcd_units); 186 STAILQ_INIT(&other_units); 187 break; 188 case MOD_UNLOAD: 189 sysctl_ctx_free(&acpi_video_sysctl_ctx); 190 acpi_video_sysctl_tree = NULL; 191 break; 192 default: 193 err = EINVAL; 194 } 195 196 return (err); 197 } 198 199 static int 200 acpi_video_probe(device_t dev) 201 { 202 ACPI_HANDLE devh, h; 203 ACPI_OBJECT_TYPE t_dos; 204 205 devh = acpi_get_handle(dev); 206 if (acpi_disabled("video") || 207 ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 208 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h)) || 209 ACPI_FAILURE(AcpiGetType(h, &t_dos)) || 210 t_dos != ACPI_TYPE_METHOD) 211 return (ENXIO); 212 213 device_set_desc(dev, "ACPI video extension"); 214 return (0); 215 } 216 217 static int 218 acpi_video_attach(device_t dev) 219 { 220 struct acpi_softc *acpi_sc; 221 struct acpi_video_softc *sc; 222 223 sc = device_get_softc(dev); 224 225 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 226 if (acpi_sc == NULL) 227 return (ENXIO); 228 if (acpi_video_sysctl_tree == NULL) { 229 acpi_video_sysctl_tree = SYSCTL_ADD_NODE(&acpi_video_sysctl_ctx, 230 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 231 OID_AUTO, "video", CTLFLAG_RD, 0, 232 "video extension control"); 233 } 234 235 sc->device = dev; 236 sc->handle = acpi_get_handle(dev); 237 STAILQ_INIT(&sc->vid_outputs); 238 239 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 240 acpi_video_notify_handler, sc); 241 sc->vid_pwr_evh = EVENTHANDLER_REGISTER(power_profile_change, 242 acpi_video_power_profile, sc, 0); 243 244 ACPI_SERIAL_BEGIN(video); 245 acpi_video_bind_outputs(sc); 246 ACPI_SERIAL_END(video); 247 248 /* 249 * Notify the BIOS that we want to switch both active outputs and 250 * brightness levels. 251 */ 252 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_OSPM | 253 DOS_BRIGHTNESS_BY_BIOS); 254 255 acpi_video_power_profile(sc); 256 257 return (0); 258 } 259 260 static int 261 acpi_video_detach(device_t dev) 262 { 263 struct acpi_video_softc *sc; 264 struct acpi_video_output *vo, *vn; 265 266 sc = device_get_softc(dev); 267 268 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 269 EVENTHANDLER_DEREGISTER(power_profile_change, sc->vid_pwr_evh); 270 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 271 acpi_video_notify_handler); 272 273 ACPI_SERIAL_BEGIN(video); 274 for (vo = STAILQ_FIRST(&sc->vid_outputs); vo != NULL; vo = vn) { 275 vn = STAILQ_NEXT(vo, vo_next); 276 acpi_video_vo_destroy(vo); 277 } 278 ACPI_SERIAL_END(video); 279 280 return (0); 281 } 282 283 static int 284 acpi_video_shutdown(device_t dev) 285 { 286 struct acpi_video_softc *sc; 287 288 sc = device_get_softc(dev); 289 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 290 291 return (0); 292 } 293 294 static void 295 acpi_video_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 296 { 297 struct acpi_video_softc *sc; 298 struct acpi_video_output *vo, *vo_tmp; 299 ACPI_HANDLE lasthand; 300 UINT32 dcs, dss, dss_p; 301 302 sc = (struct acpi_video_softc *)context; 303 304 switch (notify) { 305 case VID_NOTIFY_SWITCHED: 306 dss_p = 0; 307 lasthand = NULL; 308 ACPI_SERIAL_BEGIN(video); 309 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 310 dss = vo_get_graphics_state(vo->handle); 311 dcs = vo_get_device_status(vo->handle); 312 if (!(dcs & DCS_READY)) 313 dss = DSS_INACTIVE; 314 if (((dcs & DCS_ACTIVE) && dss == DSS_INACTIVE) || 315 (!(dcs & DCS_ACTIVE) && dss == DSS_ACTIVE)) { 316 if (lasthand != NULL) 317 vo_set_device_state(lasthand, dss_p); 318 dss_p = dss; 319 lasthand = vo->handle; 320 } 321 } 322 if (lasthand != NULL) 323 vo_set_device_state(lasthand, dss_p|DSS_COMMIT); 324 ACPI_SERIAL_END(video); 325 break; 326 case VID_NOTIFY_REPROBE: 327 ACPI_SERIAL_BEGIN(video); 328 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) 329 vo->handle = NULL; 330 acpi_video_bind_outputs(sc); 331 STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vo_tmp) { 332 if (vo->handle == NULL) { 333 STAILQ_REMOVE(&sc->vid_outputs, vo, 334 acpi_video_output, vo_next); 335 acpi_video_vo_destroy(vo); 336 } 337 } 338 ACPI_SERIAL_END(video); 339 break; 340 default: 341 device_printf(sc->device, "unknown notify event 0x%x\n", 342 notify); 343 } 344 } 345 346 static void 347 acpi_video_power_profile(void *context) 348 { 349 int state; 350 struct acpi_video_softc *sc; 351 struct acpi_video_output *vo; 352 353 sc = context; 354 state = power_profile_get_state(); 355 if (state != POWER_PROFILE_PERFORMANCE && 356 state != POWER_PROFILE_ECONOMY) 357 return; 358 359 ACPI_SERIAL_BEGIN(video); 360 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 361 if (vo->vo_levels != NULL && vo->vo_brightness == -1) 362 vo_set_brightness(vo->handle, 363 state == POWER_PROFILE_ECONOMY ? 364 vo->vo_economy : vo->vo_fullpower); 365 } 366 ACPI_SERIAL_END(video); 367 } 368 369 static void 370 acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT32 adr, void *context) 371 { 372 struct acpi_video_softc *sc; 373 struct acpi_video_output *vo; 374 375 ACPI_SERIAL_ASSERT(video); 376 sc = context; 377 378 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 379 if (vo->adr == adr) { 380 acpi_video_vo_bind(vo, handle); 381 return; 382 } 383 } 384 vo = acpi_video_vo_init(adr); 385 if (vo != NULL) { 386 acpi_video_vo_bind(vo, handle); 387 STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next); 388 } 389 } 390 391 static void 392 acpi_video_bind_outputs(struct acpi_video_softc *sc) 393 { 394 395 ACPI_SERIAL_ASSERT(video); 396 vid_enum_outputs(sc->handle, acpi_video_bind_outputs_subr, sc); 397 } 398 399 static struct acpi_video_output * 400 acpi_video_vo_init(UINT32 adr) 401 { 402 struct acpi_video_output *vn, *vo, *vp; 403 int n, x; 404 int display_index; 405 int display_port; 406 char name[8], env[32]; 407 const char *type, *desc; 408 struct acpi_video_output_queue *voqh; 409 410 ACPI_SERIAL_ASSERT(video); 411 display_index = adr & DOD_DEVID_MASK_DISPIDX; 412 display_port = (adr & DOD_DEVID_MASK_DISPPORT) >> 4; 413 414 switch (adr & DOD_DEVID_MASK) { 415 case DOD_DEVID_MONITOR: 416 if ((adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) { 417 /* DOD_DEVID_LCD is a common, backward compatible ID */ 418 desc = "Internal/Integrated Digital Flat Panel"; 419 type = "lcd"; 420 voqh = &lcd_units; 421 } else { 422 desc = "VGA CRT or VESA Compatible Analog Monitor"; 423 type = "crt"; 424 voqh = &crt_units; 425 } 426 break; 427 case DOD_DEVID_TV: 428 desc = "TV/HDTV or Analog-Video Monitor"; 429 type = "tv"; 430 voqh = &tv_units; 431 break; 432 case DOD_DEVID_EXT: 433 desc = "External Digital Monitor"; 434 type = "ext"; 435 voqh = &ext_units; 436 break; 437 case DOD_DEVID_INTDFP: 438 desc = "Internal/Integrated Digital Flat Panel"; 439 type = "lcd"; 440 voqh = &lcd_units; 441 break; 442 default: 443 desc = "unknown output"; 444 type = "out"; 445 voqh = &other_units; 446 } 447 448 n = 0; 449 vn = vp = NULL; 450 STAILQ_FOREACH(vn, voqh, vo_unit.next) { 451 if (vn->vo_unit.num != n) 452 break; 453 vp = vn; 454 n++; 455 } 456 457 snprintf(name, sizeof(name), "%s%d", type, n); 458 459 vo = malloc(sizeof(*vo), M_ACPIVIDEO, M_NOWAIT); 460 if (vo != NULL) { 461 vo->handle = NULL; 462 vo->adr = adr; 463 vo->vo_unit.num = n; 464 vo->vo_brightness = -1; 465 vo->vo_fullpower = -1; /* TODO: override with tunables */ 466 vo->vo_economy = -1; 467 vo->vo_numlevels = 0; 468 vo->vo_levels = NULL; 469 snprintf(env, sizeof(env), "hw.acpi.video.%s.fullpower", name); 470 if (getenv_int(env, &x)) 471 vo->vo_fullpower = x; 472 snprintf(env, sizeof(env), "hw.acpi.video.%s.economy", name); 473 if (getenv_int(env, &x)) 474 vo->vo_economy = x; 475 476 sysctl_ctx_init(&vo->vo_sysctl_ctx); 477 if (vp != NULL) 478 STAILQ_INSERT_AFTER(voqh, vp, vo, vo_unit.next); 479 else 480 STAILQ_INSERT_TAIL(voqh, vo, vo_unit.next); 481 if (acpi_video_sysctl_tree != NULL) 482 vo->vo_sysctl_tree = 483 SYSCTL_ADD_NODE(&vo->vo_sysctl_ctx, 484 SYSCTL_CHILDREN(acpi_video_sysctl_tree), 485 OID_AUTO, name, CTLFLAG_RD, 0, desc); 486 if (vo->vo_sysctl_tree != NULL) { 487 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 488 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 489 OID_AUTO, "active", 490 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 491 acpi_video_vo_active_sysctl, "I", 492 "current activity of this device"); 493 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 494 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 495 OID_AUTO, "brightness", 496 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 497 acpi_video_vo_bright_sysctl, "I", 498 "current brightness level"); 499 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 500 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 501 OID_AUTO, "fullpower", 502 CTLTYPE_INT|CTLFLAG_RW, vo, 503 POWER_PROFILE_PERFORMANCE, 504 acpi_video_vo_presets_sysctl, "I", 505 "preset level for full power mode"); 506 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 507 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 508 OID_AUTO, "economy", 509 CTLTYPE_INT|CTLFLAG_RW, vo, 510 POWER_PROFILE_ECONOMY, 511 acpi_video_vo_presets_sysctl, "I", 512 "preset level for economy mode"); 513 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 514 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 515 OID_AUTO, "levels", 516 CTLTYPE_OPAQUE|CTLFLAG_RD, vo, 0, 517 acpi_video_vo_levels_sysctl, "I", 518 "supported brightness levels"); 519 } else 520 printf("%s: sysctl node creation failed\n", type); 521 } else 522 printf("%s: softc allocation failed\n", type); 523 524 if (bootverbose) { 525 printf("found %s(%x)", desc, adr & DOD_DEVID_MASK_FULL); 526 printf(", idx#%x", adr & DOD_DEVID_MASK_DISPIDX); 527 printf(", port#%x", (adr & DOD_DEVID_MASK_DISPPORT) >> 4); 528 if (adr & DOD_BIOS) 529 printf(", detectable by BIOS"); 530 if (adr & DOD_NONVGA) 531 printf(" (Non-VGA output device whose power " 532 "is related to the VGA device)"); 533 printf(", head #%d\n", 534 (adr & DOD_HEAD_ID_MASK) >> DOD_HEAD_ID_SHIFT); 535 } 536 return (vo); 537 } 538 539 static void 540 acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle) 541 { 542 543 ACPI_SERIAL_ASSERT(video); 544 if (vo->vo_levels != NULL) 545 AcpiOsFree(vo->vo_levels); 546 vo->handle = handle; 547 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels); 548 if (vo->vo_numlevels >= 2) { 549 if (vo->vo_fullpower == -1 550 || acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) 551 /* XXX - can't deal with rebinding... */ 552 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER]; 553 if (vo->vo_economy == -1 554 || acpi_video_vo_check_level(vo, vo->vo_economy) != 0) 555 /* XXX - see above. */ 556 vo->vo_economy = vo->vo_levels[BCL_ECONOMY]; 557 } 558 } 559 560 static void 561 acpi_video_vo_destroy(struct acpi_video_output *vo) 562 { 563 struct acpi_video_output_queue *voqh; 564 565 ACPI_SERIAL_ASSERT(video); 566 if (vo->vo_sysctl_tree != NULL) { 567 vo->vo_sysctl_tree = NULL; 568 sysctl_ctx_free(&vo->vo_sysctl_ctx); 569 } 570 if (vo->vo_levels != NULL) 571 AcpiOsFree(vo->vo_levels); 572 573 switch (vo->adr & DOD_DEVID_MASK) { 574 case DOD_DEVID_MONITOR: 575 voqh = &crt_units; 576 break; 577 case DOD_DEVID_TV: 578 voqh = &tv_units; 579 break; 580 case DOD_DEVID_EXT: 581 voqh = &ext_units; 582 break; 583 case DOD_DEVID_INTDFP: 584 voqh = &lcd_units; 585 break; 586 default: 587 voqh = &other_units; 588 } 589 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next); 590 free(vo, M_ACPIVIDEO); 591 } 592 593 static int 594 acpi_video_vo_check_level(struct acpi_video_output *vo, int level) 595 { 596 int i; 597 598 ACPI_SERIAL_ASSERT(video); 599 if (vo->vo_levels == NULL) 600 return (ENODEV); 601 for (i = 0; i < vo->vo_numlevels; i++) 602 if (vo->vo_levels[i] == level) 603 return (0); 604 return (EINVAL); 605 } 606 607 /* ARGSUSED */ 608 static int 609 acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS) 610 { 611 struct acpi_video_output *vo; 612 int state, err; 613 614 vo = (struct acpi_video_output *)arg1; 615 if (vo->handle == NULL) 616 return (ENXIO); 617 ACPI_SERIAL_BEGIN(video); 618 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0; 619 err = sysctl_handle_int(oidp, &state, 0, req); 620 if (err != 0 || req->newptr == NULL) 621 goto out; 622 vo_set_device_state(vo->handle, 623 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE)); 624 out: 625 ACPI_SERIAL_END(video); 626 return (err); 627 } 628 629 /* ARGSUSED */ 630 static int 631 acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS) 632 { 633 struct acpi_video_output *vo; 634 int level, preset, err; 635 636 vo = (struct acpi_video_output *)arg1; 637 ACPI_SERIAL_BEGIN(video); 638 if (vo->handle == NULL) { 639 err = ENXIO; 640 goto out; 641 } 642 if (vo->vo_levels == NULL) { 643 err = ENODEV; 644 goto out; 645 } 646 647 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ? 648 vo->vo_economy : vo->vo_fullpower; 649 level = vo->vo_brightness; 650 if (level == -1) 651 level = preset; 652 653 err = sysctl_handle_int(oidp, &level, 0, req); 654 if (err != 0 || req->newptr == NULL) 655 goto out; 656 if (level < -1 || level > 100) { 657 err = EINVAL; 658 goto out; 659 } 660 661 if (level != -1 && (err = acpi_video_vo_check_level(vo, level))) 662 goto out; 663 vo->vo_brightness = level; 664 vo_set_brightness(vo->handle, (level == -1) ? preset : level); 665 666 out: 667 ACPI_SERIAL_END(video); 668 return (err); 669 } 670 671 static int 672 acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS) 673 { 674 struct acpi_video_output *vo; 675 int i, level, *preset, err; 676 677 err = 0; 678 vo = (struct acpi_video_output *)arg1; 679 ACPI_SERIAL_BEGIN(video); 680 if (vo->handle == NULL) { 681 err = ENXIO; 682 goto out; 683 } 684 if (vo->vo_levels == NULL) { 685 err = ENODEV; 686 goto out; 687 } 688 preset = (arg2 == POWER_PROFILE_ECONOMY) ? 689 &vo->vo_economy : &vo->vo_fullpower; 690 level = *preset; 691 err = sysctl_handle_int(oidp, &level, 0, req); 692 if (err != 0 || req->newptr == NULL) 693 goto out; 694 if (level < -1 || level > 100) { 695 err = EINVAL; 696 goto out; 697 } 698 if (level == -1) { 699 i = (arg2 == POWER_PROFILE_ECONOMY) ? 700 BCL_ECONOMY : BCL_FULLPOWER; 701 level = vo->vo_levels[i]; 702 } else if ((err = acpi_video_vo_check_level(vo, level)) != 0) 703 goto out; 704 705 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2)) 706 vo_set_brightness(vo->handle, level); 707 *preset = level; 708 709 out: 710 ACPI_SERIAL_END(video); 711 return (err); 712 } 713 714 /* ARGSUSED */ 715 static int 716 acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS) 717 { 718 struct acpi_video_output *vo; 719 int err; 720 721 vo = (struct acpi_video_output *)arg1; 722 ACPI_SERIAL_BEGIN(video); 723 if (vo->vo_levels == NULL) { 724 err = ENODEV; 725 goto out; 726 } 727 if (req->newptr != NULL) { 728 err = EPERM; 729 goto out; 730 } 731 err = sysctl_handle_opaque(oidp, vo->vo_levels, 732 vo->vo_numlevels * sizeof(*vo->vo_levels), req); 733 734 out: 735 ACPI_SERIAL_END(video); 736 return (err); 737 } 738 739 static void 740 vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy) 741 { 742 ACPI_STATUS status; 743 744 status = acpi_SetInteger(handle, "_DOS", policy); 745 if (ACPI_FAILURE(status)) 746 printf("can't evaluate %s._DOS - %s\n", 747 acpi_name(handle), AcpiFormatException(status)); 748 } 749 750 struct enum_callback_arg { 751 void (*callback)(ACPI_HANDLE, UINT32, void *); 752 void *context; 753 ACPI_OBJECT *dod_pkg; 754 int count; 755 }; 756 757 static ACPI_STATUS 758 vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused, 759 void *context, void **retp __unused) 760 { 761 ACPI_STATUS status; 762 UINT32 adr, val; 763 struct enum_callback_arg *argset; 764 size_t i; 765 766 ACPI_SERIAL_ASSERT(video); 767 argset = context; 768 status = acpi_GetInteger(handle, "_ADR", &adr); 769 if (ACPI_FAILURE(status)) 770 return (AE_OK); 771 772 for (i = 0; i < argset->dod_pkg->Package.Count; i++) { 773 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 && 774 (val & DOD_DEVID_MASK_FULL) == adr) { 775 argset->callback(handle, val, argset->context); 776 argset->count++; 777 } 778 } 779 780 return (AE_OK); 781 } 782 783 static int 784 vid_enum_outputs(ACPI_HANDLE handle, 785 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context) 786 { 787 ACPI_STATUS status; 788 ACPI_BUFFER dod_buf; 789 ACPI_OBJECT *res; 790 struct enum_callback_arg argset; 791 792 ACPI_SERIAL_ASSERT(video); 793 dod_buf.Length = ACPI_ALLOCATE_BUFFER; 794 dod_buf.Pointer = NULL; 795 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf); 796 if (ACPI_FAILURE(status)) { 797 if (status != AE_NOT_FOUND) 798 printf("can't evaluate %s._DOD - %s\n", 799 acpi_name(handle), AcpiFormatException(status)); 800 argset.count = -1; 801 goto out; 802 } 803 res = (ACPI_OBJECT *)dod_buf.Pointer; 804 if (!ACPI_PKG_VALID(res, 1)) { 805 printf("evaluation of %s._DOD makes no sense\n", 806 acpi_name(handle)); 807 argset.count = -1; 808 goto out; 809 } 810 if (callback == NULL) { 811 argset.count = res->Package.Count; 812 goto out; 813 } 814 argset.callback = callback; 815 argset.context = context; 816 argset.dod_pkg = res; 817 argset.count = 0; 818 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1, 819 vid_enum_outputs_subr, &argset, NULL); 820 if (ACPI_FAILURE(status)) 821 printf("failed walking down %s - %s\n", 822 acpi_name(handle), AcpiFormatException(status)); 823 out: 824 if (dod_buf.Pointer != NULL) 825 AcpiOsFree(dod_buf.Pointer); 826 return (argset.count); 827 } 828 829 static int 830 vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp) 831 { 832 ACPI_STATUS status; 833 ACPI_BUFFER bcl_buf; 834 ACPI_OBJECT *res; 835 int num, i, n, *levels; 836 837 num = 0; 838 bcl_buf.Length = ACPI_ALLOCATE_BUFFER; 839 bcl_buf.Pointer = NULL; 840 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf); 841 if (ACPI_FAILURE(status)) { 842 if (status != AE_NOT_FOUND) 843 printf("can't evaluate %s._BCL - %s\n", 844 acpi_name(handle), AcpiFormatException(status)); 845 num = -1; 846 goto out; 847 } 848 res = (ACPI_OBJECT *)bcl_buf.Pointer; 849 if (!ACPI_PKG_VALID(res, 2)) { 850 printf("evaluation of %s._BCL makes no sense\n", 851 acpi_name(handle)); 852 num = -1; 853 goto out; 854 } 855 num = res->Package.Count; 856 if (levelp == NULL) 857 goto out; 858 levels = AcpiOsAllocate(num * sizeof(*levels)); 859 if (levels == NULL) { 860 num = -1; 861 goto out; 862 } 863 for (i = 0, n = 0; i < num; i++) 864 if (acpi_PkgInt32(res, i, &levels[n]) == 0) 865 n++; 866 if (n < 2) { 867 num = -1; 868 AcpiOsFree(levels); 869 } else { 870 num = n; 871 *levelp = levels; 872 } 873 out: 874 if (bcl_buf.Pointer != NULL) 875 AcpiOsFree(bcl_buf.Pointer); 876 877 return (num); 878 } 879 880 static void 881 vo_set_brightness(ACPI_HANDLE handle, int level) 882 { 883 ACPI_STATUS status; 884 885 status = acpi_SetInteger(handle, "_BCM", level); 886 if (ACPI_FAILURE(status)) 887 printf("can't evaluate %s._BCM - %s\n", 888 acpi_name(handle), AcpiFormatException(status)); 889 } 890 891 static UINT32 892 vo_get_device_status(ACPI_HANDLE handle) 893 { 894 UINT32 dcs; 895 ACPI_STATUS status; 896 897 dcs = 0; 898 status = acpi_GetInteger(handle, "_DCS", &dcs); 899 if (ACPI_FAILURE(status)) 900 printf("can't evaluate %s._DCS - %s\n", 901 acpi_name(handle), AcpiFormatException(status)); 902 903 return (dcs); 904 } 905 906 static UINT32 907 vo_get_graphics_state(ACPI_HANDLE handle) 908 { 909 UINT32 dgs; 910 ACPI_STATUS status; 911 912 dgs = 0; 913 status = acpi_GetInteger(handle, "_DGS", &dgs); 914 if (ACPI_FAILURE(status)) 915 printf("can't evaluate %s._DGS - %s\n", 916 acpi_name(handle), AcpiFormatException(status)); 917 918 return (dgs); 919 } 920 921 static void 922 vo_set_device_state(ACPI_HANDLE handle, UINT32 state) 923 { 924 ACPI_STATUS status; 925 926 status = acpi_SetInteger(handle, "_DSS", state); 927 if (ACPI_FAILURE(status)) 928 printf("can't evaluate %s._DSS - %s\n", 929 acpi_name(handle), AcpiFormatException(status)); 930 }
Cache object: 89df2401adc5612fe83d5f509b1365c6
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