Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/acpica/acpi_video/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 * $FreeBSD: src/sys/dev/acpica/acpi_video.c,v 1.13 2006/08/10 13:18:02 bruno Exp $ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/kernel.h> 31 #include <sys/lock.h> 32 #include <sys/malloc.h> 33 #include <sys/module.h> 34 #include <sys/bus.h> 35 #include <sys/power.h> 36 #include <sys/queue.h> 37 #include <sys/sysctl.h> 38 39 #include "acpi.h" 40 #include "acpivar.h" 41 42 /* ACPI video extension driver. */ 43 struct acpi_video_output { 44 ACPI_HANDLE handle; 45 UINT32 adr; 46 STAILQ_ENTRY(acpi_video_output) vo_next; 47 struct { 48 int num; 49 STAILQ_ENTRY(acpi_video_output) next; 50 } vo_unit; 51 int vo_brightness; 52 int vo_fullpower; 53 int vo_economy; 54 int vo_numlevels; 55 int *vo_levels; 56 struct sysctl_ctx_list vo_sysctl_ctx; 57 struct sysctl_oid *vo_sysctl_tree; 58 }; 59 60 STAILQ_HEAD(acpi_video_output_queue, acpi_video_output); 61 62 struct acpi_video_softc { 63 device_t device; 64 ACPI_HANDLE handle; 65 struct acpi_video_output_queue vid_outputs; 66 eventhandler_tag vid_pwr_evh; 67 }; 68 69 /* interfaces */ 70 static int acpi_video_modevent(struct module*, int, void *); 71 static int acpi_video_probe(device_t); 72 static int acpi_video_attach(device_t); 73 static int acpi_video_detach(device_t); 74 static int acpi_video_shutdown(device_t); 75 static void acpi_video_notify_handler(ACPI_HANDLE, UINT32, void *); 76 static void acpi_video_power_profile(void *); 77 static void acpi_video_bind_outputs(struct acpi_video_softc *); 78 static struct acpi_video_output *acpi_video_vo_init(UINT32); 79 static void acpi_video_vo_bind(struct acpi_video_output *, ACPI_HANDLE); 80 static void acpi_video_vo_destroy(struct acpi_video_output *); 81 static int acpi_video_vo_check_level(struct acpi_video_output *, int); 82 static int acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS); 83 static int acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS); 84 static int acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS); 85 static int acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS); 86 87 /* operations */ 88 static void vid_set_switch_policy(ACPI_HANDLE, UINT32); 89 static int vid_enum_outputs(ACPI_HANDLE, 90 void(*)(ACPI_HANDLE, UINT32, void *), void *); 91 static int vo_get_brightness_levels(ACPI_HANDLE, int **); 92 static void vo_set_brightness(ACPI_HANDLE, int); 93 static UINT32 vo_get_device_status(ACPI_HANDLE); 94 static UINT32 vo_get_graphics_state(ACPI_HANDLE); 95 static void vo_set_device_state(ACPI_HANDLE, UINT32); 96 97 /* events */ 98 #define VID_NOTIFY_SWITCHED 0x80 99 #define VID_NOTIFY_REPROBE 0x81 100 101 /* _DOS (Enable/Disable Output Switching) argument bits */ 102 #define DOS_SWITCH_MASK 3 103 #define DOS_SWITCH_BY_OSPM 0 104 #define DOS_SWITCH_BY_BIOS 1 105 #define DOS_SWITCH_LOCKED 2 106 #define DOS_BRIGHTNESS_BY_BIOS (1 << 2) 107 108 /* _DOD and subdev's _ADR */ 109 #define DOD_DEVID_MASK 0x0f00 110 #define DOD_DEVID_MASK_FULL 0xffff 111 #define DOD_DEVID_MASK_DISPIDX 0x000f 112 #define DOD_DEVID_MASK_DISPPORT 0x00f0 113 #define DOD_DEVID_MONITOR 0x0100 114 #define DOD_DEVID_LCD 0x0110 115 #define DOD_DEVID_TV 0x0200 116 #define DOD_DEVID_EXT 0x0300 117 #define DOD_DEVID_INTDFP 0x0400 118 #define DOD_BIOS (1 << 16) 119 #define DOD_NONVGA (1 << 17) 120 #define DOD_HEAD_ID_SHIFT 18 121 #define DOD_HEAD_ID_BITS 3 122 #define DOD_HEAD_ID_MASK \ 123 (((1 << DOD_HEAD_ID_BITS) - 1) << DOD_HEAD_ID_SHIFT) 124 #define DOD_DEVID_SCHEME_STD (1 << 31) 125 126 /* _BCL related constants */ 127 #define BCL_FULLPOWER 0 128 #define BCL_ECONOMY 1 129 130 /* _DCS (Device Currrent Status) value bits and masks. */ 131 #define DCS_EXISTS (1 << 0) 132 #define DCS_ACTIVE (1 << 1) 133 #define DCS_READY (1 << 2) 134 #define DCS_FUNCTIONAL (1 << 3) 135 #define DCS_ATTACHED (1 << 4) 136 137 /* _DSS (Device Set Status) argument bits and masks. */ 138 #define DSS_INACTIVE 0 139 #define DSS_ACTIVE (1 << 0) 140 #define DSS_SETNEXT (1 << 30) 141 #define DSS_COMMIT (1 << 31) 142 143 static device_method_t acpi_video_methods[] = { 144 DEVMETHOD(device_probe, acpi_video_probe), 145 DEVMETHOD(device_attach, acpi_video_attach), 146 DEVMETHOD(device_detach, acpi_video_detach), 147 DEVMETHOD(device_shutdown, acpi_video_shutdown), 148 DEVMETHOD_END 149 }; 150 151 static driver_t acpi_video_driver = { 152 "acpi_video", 153 acpi_video_methods, 154 sizeof(struct acpi_video_softc), 155 }; 156 157 static devclass_t acpi_video_devclass; 158 159 DRIVER_MODULE(acpi_video, acpi, acpi_video_driver, acpi_video_devclass, 160 acpi_video_modevent, NULL); 161 MODULE_DEPEND(acpi_video, acpi, 1, 1, 1); 162 163 static struct sysctl_ctx_list acpi_video_sysctl_ctx; 164 static struct sysctl_oid *acpi_video_sysctl_tree; 165 static struct acpi_video_output_queue crt_units, tv_units, 166 ext_units, lcd_units, other_units; 167 static struct lock avlock; 168 169 MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension"); 170 171 static int 172 acpi_video_modevent(struct module *mod __unused, int evt, void *cookie __unused) 173 { 174 int err; 175 176 err = 0; 177 switch (evt) { 178 case MOD_LOAD: 179 sysctl_ctx_init(&acpi_video_sysctl_ctx); 180 STAILQ_INIT(&crt_units); 181 STAILQ_INIT(&tv_units); 182 STAILQ_INIT(&ext_units); 183 STAILQ_INIT(&lcd_units); 184 STAILQ_INIT(&other_units); 185 break; 186 case MOD_UNLOAD: 187 sysctl_ctx_free(&acpi_video_sysctl_ctx); 188 acpi_video_sysctl_tree = NULL; 189 break; 190 default: 191 err = EINVAL; 192 } 193 194 return (err); 195 } 196 197 static int 198 acpi_video_probe(device_t dev) 199 { 200 ACPI_HANDLE devh, h; 201 ACPI_OBJECT_TYPE t_dos; 202 203 devh = acpi_get_handle(dev); 204 if (acpi_disabled("video") || 205 ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 206 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h)) || 207 ACPI_FAILURE(AcpiGetType(h, &t_dos)) || 208 t_dos != ACPI_TYPE_METHOD) 209 return (ENXIO); 210 211 device_set_desc(dev, "ACPI video extension"); 212 return (0); 213 } 214 215 static int 216 acpi_video_attach(device_t dev) 217 { 218 struct acpi_softc *acpi_sc; 219 struct acpi_video_softc *sc; 220 221 sc = device_get_softc(dev); 222 223 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 224 if (acpi_sc == NULL) 225 return (ENXIO); 226 if (acpi_video_sysctl_tree == NULL) { 227 acpi_video_sysctl_tree = SYSCTL_ADD_NODE(&acpi_video_sysctl_ctx, 228 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 229 OID_AUTO, "video", CTLFLAG_RD, 0, 230 "video extension control"); 231 } 232 233 sc->device = dev; 234 sc->handle = acpi_get_handle(dev); 235 STAILQ_INIT(&sc->vid_outputs); 236 237 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 238 acpi_video_notify_handler, sc); 239 sc->vid_pwr_evh = EVENTHANDLER_REGISTER(power_profile_change, 240 acpi_video_power_profile, sc, 0); 241 242 lockinit(&avlock, "acpi_video", 0, 0); 243 lockmgr(&avlock, LK_EXCLUSIVE); 244 acpi_video_bind_outputs(sc); 245 lockmgr(&avlock, LK_RELEASE); 246 247 /* 248 * Notify the BIOS that we want to switch both active outputs and 249 * brightness levels. 250 */ 251 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_OSPM | 252 DOS_BRIGHTNESS_BY_BIOS); 253 254 acpi_video_power_profile(sc); 255 256 return (0); 257 } 258 259 static int 260 acpi_video_detach(device_t dev) 261 { 262 struct acpi_video_softc *sc; 263 struct acpi_video_output *vo, *vn; 264 265 sc = device_get_softc(dev); 266 267 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 268 EVENTHANDLER_DEREGISTER(power_profile_change, sc->vid_pwr_evh); 269 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 270 acpi_video_notify_handler); 271 272 lockmgr(&avlock, LK_EXCLUSIVE); 273 for (vo = STAILQ_FIRST(&sc->vid_outputs); vo != NULL; vo = vn) { 274 vn = STAILQ_NEXT(vo, vo_next); 275 acpi_video_vo_destroy(vo); 276 } 277 lockmgr(&avlock, LK_RELEASE); 278 279 return (0); 280 } 281 282 static int 283 acpi_video_shutdown(device_t dev) 284 { 285 struct acpi_video_softc *sc; 286 287 sc = device_get_softc(dev); 288 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 289 290 return (0); 291 } 292 293 static void 294 acpi_video_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 295 { 296 struct acpi_video_softc *sc; 297 struct acpi_video_output *vo, *vo_tmp; 298 ACPI_HANDLE lasthand; 299 UINT32 dcs, dss, dss_p; 300 301 sc = (struct acpi_video_softc *)context; 302 303 switch (notify) { 304 case VID_NOTIFY_SWITCHED: 305 dss_p = 0; 306 lasthand = NULL; 307 lockmgr(&avlock, LK_EXCLUSIVE); 308 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 309 dss = vo_get_graphics_state(vo->handle); 310 dcs = vo_get_device_status(vo->handle); 311 if (!(dcs & DCS_READY)) 312 dss = DSS_INACTIVE; 313 if (((dcs & DCS_ACTIVE) && dss == DSS_INACTIVE) || 314 (!(dcs & DCS_ACTIVE) && dss == DSS_ACTIVE)) { 315 if (lasthand != NULL) 316 vo_set_device_state(lasthand, dss_p); 317 dss_p = dss; 318 lasthand = vo->handle; 319 } 320 } 321 if (lasthand != NULL) 322 vo_set_device_state(lasthand, dss_p|DSS_COMMIT); 323 lockmgr(&avlock, LK_RELEASE); 324 break; 325 case VID_NOTIFY_REPROBE: 326 lockmgr(&avlock, LK_EXCLUSIVE); 327 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) 328 vo->handle = NULL; 329 acpi_video_bind_outputs(sc); 330 STAILQ_FOREACH_MUTABLE(vo, &sc->vid_outputs, vo_next, vo_tmp) { 331 if (vo->handle == NULL) { 332 STAILQ_REMOVE(&sc->vid_outputs, vo, 333 acpi_video_output, vo_next); 334 acpi_video_vo_destroy(vo); 335 } 336 } 337 lockmgr(&avlock, LK_RELEASE); 338 break; 339 default: 340 device_printf(sc->device, "unknown notify event 0x%x\n", 341 notify); 342 } 343 } 344 345 static void 346 acpi_video_power_profile(void *context) 347 { 348 int state; 349 struct acpi_video_softc *sc; 350 struct acpi_video_output *vo; 351 352 sc = context; 353 state = power_profile_get_state(); 354 if (state != POWER_PROFILE_PERFORMANCE && 355 state != POWER_PROFILE_ECONOMY) 356 return; 357 358 lockmgr(&avlock, LK_EXCLUSIVE); 359 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 360 if (vo->vo_levels != NULL && vo->vo_brightness == -1) 361 vo_set_brightness(vo->handle, 362 state == POWER_PROFILE_ECONOMY ? 363 vo->vo_economy : vo->vo_fullpower); 364 } 365 lockmgr(&avlock, LK_RELEASE); 366 } 367 368 static void 369 acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT32 adr, void *context) 370 { 371 struct acpi_video_softc *sc; 372 struct acpi_video_output *vo; 373 374 sc = context; 375 376 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 377 if (vo->adr == adr) { 378 acpi_video_vo_bind(vo, handle); 379 return; 380 } 381 } 382 vo = acpi_video_vo_init(adr); 383 if (vo != NULL) { 384 acpi_video_vo_bind(vo, handle); 385 STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next); 386 } 387 } 388 389 static void 390 acpi_video_bind_outputs(struct acpi_video_softc *sc) 391 { 392 393 vid_enum_outputs(sc->handle, acpi_video_bind_outputs_subr, sc); 394 } 395 396 static struct acpi_video_output * 397 acpi_video_vo_init(UINT32 adr) 398 { 399 struct acpi_video_output *vn, *vo, *vp; 400 int n, x; 401 char name[8], env[32]; 402 const char *type, *desc; 403 struct acpi_video_output_queue *voqh; 404 405 switch (adr & DOD_DEVID_MASK) { 406 case DOD_DEVID_MONITOR: 407 if ((adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) { 408 /* DOD_DEVID_LCD is a common, backward compatible ID */ 409 desc = "Internal/Integrated Digital Flat Panel"; 410 type = "lcd"; 411 voqh = &lcd_units; 412 } else { 413 desc = "VGA CRT or VESA Compatible Analog Monitor"; 414 type = "crt"; 415 voqh = &crt_units; 416 } 417 break; 418 case DOD_DEVID_TV: 419 desc = "TV/HDTV or Analog-Video Monitor"; 420 type = "tv"; 421 voqh = &tv_units; 422 break; 423 case DOD_DEVID_EXT: 424 desc = "External Digital Monitor"; 425 type = "ext"; 426 voqh = &ext_units; 427 break; 428 case DOD_DEVID_INTDFP: 429 desc = "Internal/Integrated Digital Flat Panel"; 430 type = "lcd"; 431 voqh = &lcd_units; 432 break; 433 default: 434 desc = "unknown output"; 435 type = "out"; 436 voqh = &other_units; 437 } 438 439 n = 0; 440 vn = vp = NULL; 441 STAILQ_FOREACH(vn, voqh, vo_unit.next) { 442 if (vn->vo_unit.num != n) 443 break; 444 vp = vn; 445 n++; 446 } 447 448 ksnprintf(name, sizeof(name), "%s%d", type, n); 449 450 vo = kmalloc(sizeof(*vo), M_ACPIVIDEO, M_NOWAIT); 451 if (vo != NULL) { 452 vo->handle = NULL; 453 vo->adr = adr; 454 vo->vo_unit.num = n; 455 vo->vo_brightness = -1; 456 vo->vo_fullpower = -1; /* TODO: override with tunables */ 457 vo->vo_economy = -1; 458 vo->vo_numlevels = 0; 459 vo->vo_levels = NULL; 460 ksnprintf(env, sizeof(env), "hw.acpi.video.%s.fullpower", name); 461 if (kgetenv_int(env, &x)) 462 vo->vo_fullpower = x; 463 ksnprintf(env, sizeof(env), "hw.acpi.video.%s.economy", name); 464 if (kgetenv_int(env, &x)) 465 vo->vo_economy = x; 466 467 sysctl_ctx_init(&vo->vo_sysctl_ctx); 468 if (vp != NULL) 469 STAILQ_INSERT_AFTER(voqh, vp, vo, vo_unit.next); 470 else 471 STAILQ_INSERT_TAIL(voqh, vo, vo_unit.next); 472 if (acpi_video_sysctl_tree != NULL) 473 vo->vo_sysctl_tree = 474 SYSCTL_ADD_NODE(&vo->vo_sysctl_ctx, 475 SYSCTL_CHILDREN(acpi_video_sysctl_tree), 476 OID_AUTO, name, CTLFLAG_RD, 0, desc); 477 if (vo->vo_sysctl_tree != NULL) { 478 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 479 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 480 OID_AUTO, "active", 481 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 482 acpi_video_vo_active_sysctl, "I", 483 "current activity of this device"); 484 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 485 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 486 OID_AUTO, "brightness", 487 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 488 acpi_video_vo_bright_sysctl, "I", 489 "current brightness level"); 490 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 491 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 492 OID_AUTO, "fullpower", 493 CTLTYPE_INT|CTLFLAG_RW, vo, 494 POWER_PROFILE_PERFORMANCE, 495 acpi_video_vo_presets_sysctl, "I", 496 "preset level for full power mode"); 497 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 498 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 499 OID_AUTO, "economy", 500 CTLTYPE_INT|CTLFLAG_RW, vo, 501 POWER_PROFILE_ECONOMY, 502 acpi_video_vo_presets_sysctl, "I", 503 "preset level for economy mode"); 504 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 505 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 506 OID_AUTO, "levels", 507 CTLTYPE_OPAQUE|CTLFLAG_RD, vo, 0, 508 acpi_video_vo_levels_sysctl, "I", 509 "supported brightness levels"); 510 } else 511 kprintf("%s: sysctl node creation failed\n", type); 512 } else 513 kprintf("%s: softc allocation failed\n", type); 514 515 if (bootverbose) { 516 kprintf("found %s(%x)", desc, adr & DOD_DEVID_MASK_FULL); 517 kprintf(", idx#%x", adr & DOD_DEVID_MASK_DISPIDX); 518 kprintf(", port#%x", (adr & DOD_DEVID_MASK_DISPPORT) >> 4); 519 if (adr & DOD_BIOS) 520 kprintf(", detectable by BIOS"); 521 if (adr & DOD_NONVGA) 522 kprintf(" (Non-VGA output device whose power " 523 "is related to the VGA device)"); 524 kprintf(", head #%d\n", 525 (adr & DOD_HEAD_ID_MASK) >> DOD_HEAD_ID_SHIFT); 526 } 527 return (vo); 528 } 529 530 static void 531 acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle) 532 { 533 if (vo->vo_levels != NULL) 534 AcpiOsFree(vo->vo_levels); 535 vo->handle = handle; 536 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels); 537 if (vo->vo_numlevels >= 2) { 538 if (vo->vo_fullpower == -1 539 || acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) 540 /* XXX - can't deal with rebinding... */ 541 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER]; 542 if (vo->vo_economy == -1 543 || acpi_video_vo_check_level(vo, vo->vo_economy) != 0) 544 /* XXX - see above. */ 545 vo->vo_economy = vo->vo_levels[BCL_ECONOMY]; 546 } 547 } 548 549 static void 550 acpi_video_vo_destroy(struct acpi_video_output *vo) 551 { 552 struct acpi_video_output_queue *voqh; 553 554 if (vo->vo_sysctl_tree != NULL) { 555 vo->vo_sysctl_tree = NULL; 556 sysctl_ctx_free(&vo->vo_sysctl_ctx); 557 } 558 if (vo->vo_levels != NULL) 559 AcpiOsFree(vo->vo_levels); 560 561 switch (vo->adr & DOD_DEVID_MASK) { 562 case DOD_DEVID_MONITOR: 563 voqh = &crt_units; 564 break; 565 case DOD_DEVID_TV: 566 voqh = &tv_units; 567 break; 568 case DOD_DEVID_EXT: 569 voqh = &ext_units; 570 break; 571 case DOD_DEVID_INTDFP: 572 voqh = &lcd_units; 573 break; 574 default: 575 voqh = &other_units; 576 } 577 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next); 578 kfree(vo, M_ACPIVIDEO); 579 } 580 581 static int 582 acpi_video_vo_check_level(struct acpi_video_output *vo, int level) 583 { 584 int i; 585 586 if (vo->vo_levels == NULL) 587 return (ENODEV); 588 for (i = 0; i < vo->vo_numlevels; i++) 589 if (vo->vo_levels[i] == level) 590 return (0); 591 return (EINVAL); 592 } 593 594 /* ARGSUSED */ 595 static int 596 acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS) 597 { 598 struct acpi_video_output *vo; 599 int state, err; 600 601 vo = (struct acpi_video_output *)arg1; 602 if (vo->handle == NULL) 603 return (ENXIO); 604 lockmgr(&avlock, LK_EXCLUSIVE); 605 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0; 606 err = sysctl_handle_int(oidp, &state, 0, req); 607 if (err != 0 || req->newptr == NULL) 608 goto out; 609 vo_set_device_state(vo->handle, 610 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE)); 611 out: 612 lockmgr(&avlock, LK_RELEASE); 613 return (err); 614 } 615 616 /* ARGSUSED */ 617 static int 618 acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS) 619 { 620 struct acpi_video_output *vo; 621 int level, preset, err; 622 623 vo = (struct acpi_video_output *)arg1; 624 lockmgr(&avlock, LK_EXCLUSIVE); 625 if (vo->handle == NULL) { 626 err = ENXIO; 627 goto out; 628 } 629 if (vo->vo_levels == NULL) { 630 err = ENODEV; 631 goto out; 632 } 633 634 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ? 635 vo->vo_economy : vo->vo_fullpower; 636 level = vo->vo_brightness; 637 if (level == -1) 638 level = preset; 639 640 err = sysctl_handle_int(oidp, &level, 0, req); 641 if (err != 0 || req->newptr == NULL) 642 goto out; 643 if (level < -1 || level > 100) { 644 err = EINVAL; 645 goto out; 646 } 647 648 if (level != -1 && (err = acpi_video_vo_check_level(vo, level))) 649 goto out; 650 vo->vo_brightness = level; 651 vo_set_brightness(vo->handle, (level == -1) ? preset : level); 652 653 out: 654 lockmgr(&avlock, LK_RELEASE); 655 return (err); 656 } 657 658 static int 659 acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS) 660 { 661 struct acpi_video_output *vo; 662 int i, level, *preset, err; 663 664 err = 0; 665 vo = (struct acpi_video_output *)arg1; 666 lockmgr(&avlock, LK_EXCLUSIVE); 667 if (vo->handle == NULL) { 668 err = ENXIO; 669 goto out; 670 } 671 if (vo->vo_levels == NULL) { 672 err = ENODEV; 673 goto out; 674 } 675 preset = (arg2 == POWER_PROFILE_ECONOMY) ? 676 &vo->vo_economy : &vo->vo_fullpower; 677 level = *preset; 678 err = sysctl_handle_int(oidp, &level, 0, req); 679 if (err != 0 || req->newptr == NULL) 680 goto out; 681 if (level < -1 || level > 100) { 682 err = EINVAL; 683 goto out; 684 } 685 if (level == -1) { 686 i = (arg2 == POWER_PROFILE_ECONOMY) ? 687 BCL_ECONOMY : BCL_FULLPOWER; 688 level = vo->vo_levels[i]; 689 } else if ((err = acpi_video_vo_check_level(vo, level)) != 0) 690 goto out; 691 692 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2)) 693 vo_set_brightness(vo->handle, level); 694 *preset = level; 695 696 out: 697 lockmgr(&avlock, LK_RELEASE); 698 return (err); 699 } 700 701 /* ARGSUSED */ 702 static int 703 acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS) 704 { 705 struct acpi_video_output *vo; 706 int err; 707 708 vo = (struct acpi_video_output *)arg1; 709 lockmgr(&avlock, LK_EXCLUSIVE); 710 if (vo->vo_levels == NULL) { 711 err = ENODEV; 712 goto out; 713 } 714 if (req->newptr != NULL) { 715 err = EPERM; 716 goto out; 717 } 718 err = sysctl_handle_opaque(oidp, vo->vo_levels, 719 vo->vo_numlevels * sizeof(*vo->vo_levels), req); 720 721 out: 722 lockmgr(&avlock, LK_RELEASE); 723 return (err); 724 } 725 726 static void 727 vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy) 728 { 729 ACPI_STATUS status; 730 731 status = acpi_SetInteger(handle, "_DOS", policy); 732 if (ACPI_FAILURE(status)) 733 kprintf("can't evaluate %s._DOS - %s\n", 734 acpi_name(handle), AcpiFormatException(status)); 735 } 736 737 struct enum_callback_arg { 738 void (*callback)(ACPI_HANDLE, UINT32, void *); 739 void *context; 740 ACPI_OBJECT *dod_pkg; 741 int count; 742 }; 743 744 static ACPI_STATUS 745 vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused, 746 void *context, void **retp __unused) 747 { 748 ACPI_STATUS status; 749 UINT32 adr, val; 750 struct enum_callback_arg *argset; 751 size_t i; 752 753 argset = context; 754 status = acpi_GetInteger(handle, "_ADR", &adr); 755 if (ACPI_FAILURE(status)) 756 return (AE_OK); 757 758 for (i = 0; i < argset->dod_pkg->Package.Count; i++) { 759 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 && 760 (val & DOD_DEVID_MASK_FULL) == adr) { 761 argset->callback(handle, val, argset->context); 762 argset->count++; 763 } 764 } 765 766 return (AE_OK); 767 } 768 769 static int 770 vid_enum_outputs(ACPI_HANDLE handle, 771 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context) 772 { 773 ACPI_STATUS status; 774 ACPI_BUFFER dod_buf; 775 ACPI_OBJECT *res; 776 struct enum_callback_arg argset; 777 778 dod_buf.Length = ACPI_ALLOCATE_BUFFER; 779 dod_buf.Pointer = NULL; 780 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf); 781 if (ACPI_FAILURE(status)) { 782 if (status != AE_NOT_FOUND) 783 kprintf("can't evaluate %s._DOD - %s\n", 784 acpi_name(handle), AcpiFormatException(status)); 785 argset.count = -1; 786 goto out; 787 } 788 res = (ACPI_OBJECT *)dod_buf.Pointer; 789 if (!ACPI_PKG_VALID(res, 1)) { 790 kprintf("evaluation of %s._DOD makes no sense\n", 791 acpi_name(handle)); 792 argset.count = -1; 793 goto out; 794 } 795 if (callback == NULL) { 796 argset.count = res->Package.Count; 797 goto out; 798 } 799 argset.callback = callback; 800 argset.context = context; 801 argset.dod_pkg = res; 802 argset.count = 0; 803 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1, 804 vid_enum_outputs_subr, NULL, &argset, NULL); 805 if (ACPI_FAILURE(status)) 806 kprintf("failed walking down %s - %s\n", 807 acpi_name(handle), AcpiFormatException(status)); 808 out: 809 if (dod_buf.Pointer != NULL) 810 AcpiOsFree(dod_buf.Pointer); 811 return (argset.count); 812 } 813 814 static int 815 vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp) 816 { 817 ACPI_STATUS status; 818 ACPI_BUFFER bcl_buf; 819 ACPI_OBJECT *res; 820 int num, i, n, *levels; 821 822 num = 0; 823 bcl_buf.Length = ACPI_ALLOCATE_BUFFER; 824 bcl_buf.Pointer = NULL; 825 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf); 826 if (ACPI_FAILURE(status)) { 827 if (status != AE_NOT_FOUND) 828 kprintf("can't evaluate %s._BCL - %s\n", 829 acpi_name(handle), AcpiFormatException(status)); 830 num = -1; 831 goto out; 832 } 833 res = (ACPI_OBJECT *)bcl_buf.Pointer; 834 if (!ACPI_PKG_VALID(res, 2)) { 835 kprintf("evaluation of %s._BCL makes no sense\n", 836 acpi_name(handle)); 837 num = -1; 838 goto out; 839 } 840 num = res->Package.Count; 841 if (levelp == NULL) 842 goto out; 843 levels = AcpiOsAllocate(num * sizeof(*levels)); 844 if (levels == NULL) { 845 num = -1; 846 goto out; 847 } 848 for (i = 0, n = 0; i < num; i++) 849 if (acpi_PkgInt32(res, i, &levels[n]) == 0) 850 n++; 851 if (n < 2) { 852 num = -1; 853 AcpiOsFree(levels); 854 } else { 855 num = n; 856 *levelp = levels; 857 } 858 out: 859 if (bcl_buf.Pointer != NULL) 860 AcpiOsFree(bcl_buf.Pointer); 861 862 return (num); 863 } 864 865 static void 866 vo_set_brightness(ACPI_HANDLE handle, int level) 867 { 868 ACPI_STATUS status; 869 870 status = acpi_SetInteger(handle, "_BCM", level); 871 if (ACPI_FAILURE(status)) 872 kprintf("can't evaluate %s._BCM - %s\n", 873 acpi_name(handle), AcpiFormatException(status)); 874 } 875 876 static UINT32 877 vo_get_device_status(ACPI_HANDLE handle) 878 { 879 UINT32 dcs; 880 ACPI_STATUS status; 881 882 dcs = 0; 883 status = acpi_GetInteger(handle, "_DCS", &dcs); 884 if (ACPI_FAILURE(status)) 885 kprintf("can't evaluate %s._DCS - %s\n", 886 acpi_name(handle), AcpiFormatException(status)); 887 888 return (dcs); 889 } 890 891 static UINT32 892 vo_get_graphics_state(ACPI_HANDLE handle) 893 { 894 UINT32 dgs; 895 ACPI_STATUS status; 896 897 dgs = 0; 898 status = acpi_GetInteger(handle, "_DGS", &dgs); 899 if (ACPI_FAILURE(status)) 900 kprintf("can't evaluate %s._DGS - %s\n", 901 acpi_name(handle), AcpiFormatException(status)); 902 903 return (dgs); 904 } 905 906 static void 907 vo_set_device_state(ACPI_HANDLE handle, UINT32 state) 908 { 909 ACPI_STATUS status; 910 911 status = acpi_SetInteger(handle, "_DSS", state); 912 if (ACPI_FAILURE(status)) 913 kprintf("can't evaluate %s._DSS - %s\n", 914 acpi_name(handle), AcpiFormatException(status)); 915 }
Cache object: b6e8ff3ffd016a759ce722b26ebac14d
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