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: head/sys/dev/acpica/acpi_video.c 258780 2013-11-30 22:17:27Z eadler $
27 * $Id: acpi_vid.c,v 1.4 2003/10/13 10:07:36 taku Exp $
28 */
29
30 #include <sys/param.h>
31 #include <sys/kernel.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 void acpi_video_identify(driver_t *driver, device_t parent);
72 static int acpi_video_probe(device_t);
73 static int acpi_video_attach(device_t);
74 static int acpi_video_detach(device_t);
75 static int acpi_video_resume(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 void acpi_video_vo_notify_handler(ACPI_HANDLE, UINT32, void *);
85 static int acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS);
86 static int acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS);
87 static int acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS);
88 static int acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS);
89
90 /* operations */
91 static void vid_set_switch_policy(ACPI_HANDLE, UINT32);
92 static int vid_enum_outputs(ACPI_HANDLE,
93 void(*)(ACPI_HANDLE, UINT32, void *), void *);
94 static int vo_get_brightness_levels(ACPI_HANDLE, int **);
95 static int vo_get_brightness(ACPI_HANDLE);
96 static void vo_set_brightness(ACPI_HANDLE, int);
97 static UINT32 vo_get_device_status(ACPI_HANDLE);
98 static UINT32 vo_get_graphics_state(ACPI_HANDLE);
99 static void vo_set_device_state(ACPI_HANDLE, UINT32);
100
101 /* events */
102 #define VID_NOTIFY_SWITCHED 0x80
103 #define VID_NOTIFY_REPROBE 0x81
104 #define VID_NOTIFY_CYCLE_BRN 0x85
105 #define VID_NOTIFY_INC_BRN 0x86
106 #define VID_NOTIFY_DEC_BRN 0x87
107 #define VID_NOTIFY_ZERO_BRN 0x88
108
109 /* _DOS (Enable/Disable Output Switching) argument bits */
110 #define DOS_SWITCH_MASK 3
111 #define DOS_SWITCH_BY_OSPM 0
112 #define DOS_SWITCH_BY_BIOS 1
113 #define DOS_SWITCH_LOCKED 2
114 #define DOS_BRIGHTNESS_BY_OSPM (1 << 2)
115
116 /* _DOD and subdev's _ADR */
117 #define DOD_DEVID_MASK 0x0f00
118 #define DOD_DEVID_MASK_FULL 0xffff
119 #define DOD_DEVID_MASK_DISPIDX 0x000f
120 #define DOD_DEVID_MASK_DISPPORT 0x00f0
121 #define DOD_DEVID_MONITOR 0x0100
122 #define DOD_DEVID_LCD 0x0110
123 #define DOD_DEVID_TV 0x0200
124 #define DOD_DEVID_EXT 0x0300
125 #define DOD_DEVID_INTDFP 0x0400
126 #define DOD_BIOS (1 << 16)
127 #define DOD_NONVGA (1 << 17)
128 #define DOD_HEAD_ID_SHIFT 18
129 #define DOD_HEAD_ID_BITS 3
130 #define DOD_HEAD_ID_MASK \
131 (((1 << DOD_HEAD_ID_BITS) - 1) << DOD_HEAD_ID_SHIFT)
132 #define DOD_DEVID_SCHEME_STD (1 << 31)
133
134 /* _BCL related constants */
135 #define BCL_FULLPOWER 0
136 #define BCL_ECONOMY 1
137
138 /* _DCS (Device Currrent Status) value bits and masks. */
139 #define DCS_EXISTS (1 << 0)
140 #define DCS_ACTIVE (1 << 1)
141 #define DCS_READY (1 << 2)
142 #define DCS_FUNCTIONAL (1 << 3)
143 #define DCS_ATTACHED (1 << 4)
144
145 /* _DSS (Device Set Status) argument bits and masks. */
146 #define DSS_INACTIVE 0
147 #define DSS_ACTIVE (1 << 0)
148 #define DSS_SETNEXT (1 << 30)
149 #define DSS_COMMIT (1 << 31)
150
151 static device_method_t acpi_video_methods[] = {
152 DEVMETHOD(device_identify, acpi_video_identify),
153 DEVMETHOD(device_probe, acpi_video_probe),
154 DEVMETHOD(device_attach, acpi_video_attach),
155 DEVMETHOD(device_detach, acpi_video_detach),
156 DEVMETHOD(device_resume, acpi_video_resume),
157 DEVMETHOD(device_shutdown, acpi_video_shutdown),
158
159 DEVMETHOD_END
160 };
161
162 static driver_t acpi_video_driver = {
163 "acpi_video",
164 acpi_video_methods,
165 sizeof(struct acpi_video_softc),
166 };
167
168 static devclass_t acpi_video_devclass;
169
170 DRIVER_MODULE(acpi_video, vgapci, acpi_video_driver, acpi_video_devclass,
171 acpi_video_modevent, NULL);
172 MODULE_DEPEND(acpi_video, acpi, 1, 1, 1);
173
174 static struct sysctl_ctx_list acpi_video_sysctl_ctx;
175 static struct sysctl_oid *acpi_video_sysctl_tree;
176 static struct acpi_video_output_queue crt_units, tv_units,
177 ext_units, lcd_units, other_units;
178
179 /*
180 * The 'video' lock protects the hierarchy of video output devices
181 * (the video "bus"). The 'video_output' lock protects per-output
182 * data is equivalent to a softc lock for each video output.
183 */
184 ACPI_SERIAL_DECL(video, "ACPI video");
185 ACPI_SERIAL_DECL(video_output, "ACPI video output");
186 static MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension");
187
188 static int
acpi_video_modevent(struct module * mod __unused,int evt,void * cookie __unused)189 acpi_video_modevent(struct module *mod __unused, int evt, void *cookie __unused)
190 {
191 int err;
192
193 err = 0;
194 switch (evt) {
195 case MOD_LOAD:
196 sysctl_ctx_init(&acpi_video_sysctl_ctx);
197 STAILQ_INIT(&crt_units);
198 STAILQ_INIT(&tv_units);
199 STAILQ_INIT(&ext_units);
200 STAILQ_INIT(&lcd_units);
201 STAILQ_INIT(&other_units);
202 break;
203 case MOD_UNLOAD:
204 sysctl_ctx_free(&acpi_video_sysctl_ctx);
205 acpi_video_sysctl_tree = NULL;
206 break;
207 default:
208 err = EINVAL;
209 }
210
211 return (err);
212 }
213
214 static void
acpi_video_identify(driver_t * driver,device_t parent)215 acpi_video_identify(driver_t *driver, device_t parent)
216 {
217
218 if (device_find_child(parent, "acpi_video", -1) == NULL)
219 device_add_child(parent, "acpi_video", -1);
220 }
221
222 static int
acpi_video_probe(device_t dev)223 acpi_video_probe(device_t dev)
224 {
225 ACPI_HANDLE devh, h;
226 ACPI_OBJECT_TYPE t_dos;
227
228 devh = acpi_get_handle(dev);
229 if (acpi_disabled("video") ||
230 ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) ||
231 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h)) ||
232 ACPI_FAILURE(AcpiGetType(h, &t_dos)) ||
233 t_dos != ACPI_TYPE_METHOD)
234 return (ENXIO);
235
236 device_set_desc(dev, "ACPI video extension");
237 return (0);
238 }
239
240 static int
acpi_video_attach(device_t dev)241 acpi_video_attach(device_t dev)
242 {
243 struct acpi_softc *acpi_sc;
244 struct acpi_video_softc *sc;
245
246 sc = device_get_softc(dev);
247
248 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0);
249 if (acpi_sc == NULL)
250 return (ENXIO);
251 ACPI_SERIAL_INIT(video);
252 ACPI_SERIAL_INIT(video_output);
253 ACPI_SERIAL_BEGIN(video);
254 if (acpi_video_sysctl_tree == NULL) {
255 acpi_video_sysctl_tree = SYSCTL_ADD_NODE(&acpi_video_sysctl_ctx,
256 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
257 OID_AUTO, "video", CTLFLAG_RD, 0,
258 "video extension control");
259 }
260 ACPI_SERIAL_END(video);
261
262 sc->device = dev;
263 sc->handle = acpi_get_handle(dev);
264 STAILQ_INIT(&sc->vid_outputs);
265
266 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
267 acpi_video_notify_handler, sc);
268 sc->vid_pwr_evh = EVENTHANDLER_REGISTER(power_profile_change,
269 acpi_video_power_profile, sc, 0);
270
271 ACPI_SERIAL_BEGIN(video);
272 acpi_video_bind_outputs(sc);
273 ACPI_SERIAL_END(video);
274
275 /*
276 * Notify the BIOS that we want to switch both active outputs and
277 * brightness levels.
278 */
279 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_OSPM |
280 DOS_BRIGHTNESS_BY_OSPM);
281
282 acpi_video_power_profile(sc);
283
284 return (0);
285 }
286
287 static int
acpi_video_detach(device_t dev)288 acpi_video_detach(device_t dev)
289 {
290 struct acpi_video_softc *sc;
291 struct acpi_video_output *vo, *vn;
292
293 sc = device_get_softc(dev);
294
295 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS);
296 EVENTHANDLER_DEREGISTER(power_profile_change, sc->vid_pwr_evh);
297 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
298 acpi_video_notify_handler);
299
300 ACPI_SERIAL_BEGIN(video);
301 STAILQ_FOREACH_MUTABLE(vo, &sc->vid_outputs, vo_next, vn) {
302 acpi_video_vo_destroy(vo);
303 }
304 ACPI_SERIAL_END(video);
305
306 return (0);
307 }
308
309 static int
acpi_video_resume(device_t dev)310 acpi_video_resume(device_t dev)
311 {
312 struct acpi_video_softc *sc;
313 struct acpi_video_output *vo, *vn;
314 int level;
315
316 sc = device_get_softc(dev);
317
318 /* Restore brightness level */
319 ACPI_SERIAL_BEGIN(video);
320 ACPI_SERIAL_BEGIN(video_output);
321 STAILQ_FOREACH_MUTABLE(vo, &sc->vid_outputs, vo_next, vn) {
322 if ((vo->adr & DOD_DEVID_MASK_FULL) != DOD_DEVID_LCD &&
323 (vo->adr & DOD_DEVID_MASK) != DOD_DEVID_INTDFP)
324 continue;
325
326 if ((vo_get_device_status(vo->handle) & DCS_ACTIVE) == 0)
327 continue;
328
329 level = vo_get_brightness(vo->handle);
330 if (level != -1)
331 vo_set_brightness(vo->handle, level);
332 }
333 ACPI_SERIAL_END(video_output);
334 ACPI_SERIAL_END(video);
335
336 return (0);
337 }
338
339 static int
acpi_video_shutdown(device_t dev)340 acpi_video_shutdown(device_t dev)
341 {
342 struct acpi_video_softc *sc;
343
344 sc = device_get_softc(dev);
345 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS);
346
347 return (0);
348 }
349
350 static void
acpi_video_notify_handler(ACPI_HANDLE handle,UINT32 notify,void * context)351 acpi_video_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context)
352 {
353 struct acpi_video_softc *sc;
354 struct acpi_video_output *vo, *vo_tmp;
355 ACPI_HANDLE lasthand;
356 UINT32 dcs, dss, dss_p;
357
358 sc = (struct acpi_video_softc *)context;
359
360 switch (notify) {
361 case VID_NOTIFY_SWITCHED:
362 dss_p = 0;
363 lasthand = NULL;
364 ACPI_SERIAL_BEGIN(video);
365 ACPI_SERIAL_BEGIN(video_output);
366 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) {
367 dss = vo_get_graphics_state(vo->handle);
368 dcs = vo_get_device_status(vo->handle);
369 if (!(dcs & DCS_READY))
370 dss = DSS_INACTIVE;
371 if (((dcs & DCS_ACTIVE) && dss == DSS_INACTIVE) ||
372 (!(dcs & DCS_ACTIVE) && dss == DSS_ACTIVE)) {
373 if (lasthand != NULL)
374 vo_set_device_state(lasthand, dss_p);
375 dss_p = dss;
376 lasthand = vo->handle;
377 }
378 }
379 if (lasthand != NULL)
380 vo_set_device_state(lasthand, dss_p|DSS_COMMIT);
381 ACPI_SERIAL_END(video_output);
382 ACPI_SERIAL_END(video);
383 break;
384 case VID_NOTIFY_REPROBE:
385 ACPI_SERIAL_BEGIN(video);
386 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next)
387 vo->handle = NULL;
388 acpi_video_bind_outputs(sc);
389 STAILQ_FOREACH_MUTABLE(vo, &sc->vid_outputs, vo_next, vo_tmp) {
390 if (vo->handle == NULL) {
391 STAILQ_REMOVE(&sc->vid_outputs, vo,
392 acpi_video_output, vo_next);
393 acpi_video_vo_destroy(vo);
394 }
395 }
396 ACPI_SERIAL_END(video);
397 break;
398 default:
399 device_printf(sc->device, "unknown notify: %#x\n", notify);
400 }
401 }
402
403 static void
acpi_video_power_profile(void * context)404 acpi_video_power_profile(void *context)
405 {
406 int state;
407 struct acpi_video_softc *sc;
408 struct acpi_video_output *vo;
409
410 sc = context;
411 state = power_profile_get_state();
412 if (state != POWER_PROFILE_PERFORMANCE &&
413 state != POWER_PROFILE_ECONOMY)
414 return;
415
416 ACPI_SERIAL_BEGIN(video);
417 ACPI_SERIAL_BEGIN(video_output);
418 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) {
419 if (vo->vo_levels != NULL && vo->vo_brightness == -1)
420 vo_set_brightness(vo->handle,
421 state == POWER_PROFILE_ECONOMY ?
422 vo->vo_economy : vo->vo_fullpower);
423 }
424 ACPI_SERIAL_END(video_output);
425 ACPI_SERIAL_END(video);
426 }
427
428 static void
acpi_video_bind_outputs_subr(ACPI_HANDLE handle,UINT32 adr,void * context)429 acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT32 adr, void *context)
430 {
431 struct acpi_video_softc *sc;
432 struct acpi_video_output *vo;
433
434 ACPI_SERIAL_ASSERT(video);
435 sc = context;
436
437 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) {
438 if (vo->adr == adr) {
439 acpi_video_vo_bind(vo, handle);
440 return;
441 }
442 }
443 vo = acpi_video_vo_init(adr);
444 if (vo != NULL) {
445 acpi_video_vo_bind(vo, handle);
446 STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next);
447 }
448 }
449
450 static void
acpi_video_bind_outputs(struct acpi_video_softc * sc)451 acpi_video_bind_outputs(struct acpi_video_softc *sc)
452 {
453 ACPI_SERIAL_ASSERT(video);
454 vid_enum_outputs(sc->handle, acpi_video_bind_outputs_subr, sc);
455 }
456
457 static struct acpi_video_output *
acpi_video_vo_init(UINT32 adr)458 acpi_video_vo_init(UINT32 adr)
459 {
460 struct acpi_video_output *vn, *vo, *vp;
461 int n, x;
462 char name[8], env[32];
463 const char *type, *desc;
464 struct acpi_video_output_queue *voqh;
465
466 ACPI_SERIAL_ASSERT(video);
467
468 switch (adr & DOD_DEVID_MASK) {
469 case DOD_DEVID_MONITOR:
470 if ((adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) {
471 /* DOD_DEVID_LCD is a common, backward compatible ID */
472 desc = "Internal/Integrated Digital Flat Panel";
473 type = "lcd";
474 voqh = &lcd_units;
475 } else {
476 desc = "VGA CRT or VESA Compatible Analog Monitor";
477 type = "crt";
478 voqh = &crt_units;
479 }
480 break;
481 case DOD_DEVID_TV:
482 desc = "TV/HDTV or Analog-Video Monitor";
483 type = "tv";
484 voqh = &tv_units;
485 break;
486 case DOD_DEVID_EXT:
487 desc = "External Digital Monitor";
488 type = "ext";
489 voqh = &ext_units;
490 break;
491 case DOD_DEVID_INTDFP:
492 desc = "Internal/Integrated Digital Flat Panel";
493 type = "lcd";
494 voqh = &lcd_units;
495 break;
496 default:
497 desc = "unknown output";
498 type = "out";
499 voqh = &other_units;
500 }
501
502 n = 0;
503 vp = NULL;
504 STAILQ_FOREACH(vn, voqh, vo_unit.next) {
505 if (vn->vo_unit.num != n)
506 break;
507 vp = vn;
508 n++;
509 }
510
511 ksnprintf(name, sizeof(name), "%s%d", type, n);
512
513 vo = kmalloc(sizeof(*vo), M_ACPIVIDEO, M_NOWAIT);
514 if (vo != NULL) {
515 vo->handle = NULL;
516 vo->adr = adr;
517 vo->vo_unit.num = n;
518 vo->vo_brightness = -1;
519 vo->vo_fullpower = -1; /* TODO: override with tunables */
520 vo->vo_economy = -1;
521 vo->vo_numlevels = 0;
522 vo->vo_levels = NULL;
523 ksnprintf(env, sizeof(env), "hw.acpi.video.%s.fullpower", name);
524 if (kgetenv_int(env, &x))
525 vo->vo_fullpower = x;
526 ksnprintf(env, sizeof(env), "hw.acpi.video.%s.economy", name);
527 if (kgetenv_int(env, &x))
528 vo->vo_economy = x;
529
530 sysctl_ctx_init(&vo->vo_sysctl_ctx);
531 if (vp != NULL)
532 STAILQ_INSERT_AFTER(voqh, vp, vo, vo_unit.next);
533 else
534 STAILQ_INSERT_TAIL(voqh, vo, vo_unit.next);
535 if (acpi_video_sysctl_tree != NULL)
536 vo->vo_sysctl_tree =
537 SYSCTL_ADD_NODE(&vo->vo_sysctl_ctx,
538 SYSCTL_CHILDREN(acpi_video_sysctl_tree),
539 OID_AUTO, name, CTLFLAG_RD, 0, desc);
540 if (vo->vo_sysctl_tree != NULL) {
541 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx,
542 SYSCTL_CHILDREN(vo->vo_sysctl_tree),
543 OID_AUTO, "active",
544 CTLTYPE_INT|CTLFLAG_RW, vo, 0,
545 acpi_video_vo_active_sysctl, "I",
546 "current activity of this device");
547 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx,
548 SYSCTL_CHILDREN(vo->vo_sysctl_tree),
549 OID_AUTO, "brightness",
550 CTLTYPE_INT|CTLFLAG_RW, vo, 0,
551 acpi_video_vo_bright_sysctl, "I",
552 "current brightness level");
553 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx,
554 SYSCTL_CHILDREN(vo->vo_sysctl_tree),
555 OID_AUTO, "fullpower",
556 CTLTYPE_INT|CTLFLAG_RW, vo,
557 POWER_PROFILE_PERFORMANCE,
558 acpi_video_vo_presets_sysctl, "I",
559 "preset level for full power mode");
560 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx,
561 SYSCTL_CHILDREN(vo->vo_sysctl_tree),
562 OID_AUTO, "economy",
563 CTLTYPE_INT|CTLFLAG_RW, vo,
564 POWER_PROFILE_ECONOMY,
565 acpi_video_vo_presets_sysctl, "I",
566 "preset level for economy mode");
567 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx,
568 SYSCTL_CHILDREN(vo->vo_sysctl_tree),
569 OID_AUTO, "levels",
570 CTLTYPE_INT|CTLFLAG_RD, vo, 0,
571 acpi_video_vo_levels_sysctl, "I",
572 "supported brightness levels");
573 } else
574 kprintf("%s: sysctl node creation failed\n", type);
575 } else
576 kprintf("%s: softc allocation failed\n", type);
577
578 if (bootverbose) {
579 kprintf("found %s(%x)", desc, adr & DOD_DEVID_MASK_FULL);
580 kprintf(", idx#%x", adr & DOD_DEVID_MASK_DISPIDX);
581 kprintf(", port#%x", (adr & DOD_DEVID_MASK_DISPPORT) >> 4);
582 if (adr & DOD_BIOS)
583 kprintf(", detectable by BIOS");
584 if (adr & DOD_NONVGA)
585 kprintf(" (Non-VGA output device whose power "
586 "is related to the VGA device)");
587 kprintf(", head #%d\n",
588 (adr & DOD_HEAD_ID_MASK) >> DOD_HEAD_ID_SHIFT);
589 }
590 return (vo);
591 }
592
593 static void
acpi_video_vo_bind(struct acpi_video_output * vo,ACPI_HANDLE handle)594 acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle)
595 {
596 ACPI_SERIAL_BEGIN(video_output);
597 if (vo->vo_levels != NULL)
598 AcpiOsFree(vo->vo_levels);
599 vo->handle = handle;
600 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels);
601 if (vo->vo_numlevels >= 2) {
602 if (vo->vo_fullpower == -1
603 || acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0)
604 /* XXX - can't deal with rebinding... */
605 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER];
606 if (vo->vo_economy == -1
607 || acpi_video_vo_check_level(vo, vo->vo_economy) != 0)
608 /* XXX - see above. */
609 vo->vo_economy = vo->vo_levels[BCL_ECONOMY];
610 }
611 if (vo->vo_levels != NULL)
612 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY,
613 acpi_video_vo_notify_handler, vo);
614 ACPI_SERIAL_END(video_output);
615 }
616
617 static void
acpi_video_vo_destroy(struct acpi_video_output * vo)618 acpi_video_vo_destroy(struct acpi_video_output *vo)
619 {
620 struct acpi_video_output_queue *voqh;
621
622 ACPI_SERIAL_ASSERT(video);
623 if (vo->vo_sysctl_tree != NULL) {
624 vo->vo_sysctl_tree = NULL;
625 sysctl_ctx_free(&vo->vo_sysctl_ctx);
626 }
627 if (vo->vo_levels != NULL) {
628 AcpiRemoveNotifyHandler(vo->handle, ACPI_DEVICE_NOTIFY,
629 acpi_video_vo_notify_handler);
630 AcpiOsFree(vo->vo_levels);
631 }
632
633 switch (vo->adr & DOD_DEVID_MASK) {
634 case DOD_DEVID_MONITOR:
635 if ((vo->adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) {
636 voqh = &lcd_units;
637 } else {
638 voqh = &crt_units;
639 }
640 break;
641 case DOD_DEVID_TV:
642 voqh = &tv_units;
643 break;
644 case DOD_DEVID_EXT:
645 voqh = &ext_units;
646 break;
647 case DOD_DEVID_INTDFP:
648 voqh = &lcd_units;
649 break;
650 default:
651 voqh = &other_units;
652 }
653 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next);
654 kfree(vo, M_ACPIVIDEO);
655 }
656
657 static int
acpi_video_vo_check_level(struct acpi_video_output * vo,int level)658 acpi_video_vo_check_level(struct acpi_video_output *vo, int level)
659 {
660 int i;
661
662 ACPI_SERIAL_ASSERT(video_output);
663 if (vo->vo_levels == NULL)
664 return (ENODEV);
665 for (i = 0; i < vo->vo_numlevels; i++)
666 if (vo->vo_levels[i] == level)
667 return (0);
668 return (EINVAL);
669 }
670
671 static void
acpi_video_vo_notify_handler(ACPI_HANDLE handle,UINT32 notify,void * context)672 acpi_video_vo_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context)
673 {
674 struct acpi_video_output *vo;
675 int i, j, level, new_level;
676
677 vo = context;
678 ACPI_SERIAL_BEGIN(video_output);
679 if (vo->handle != handle)
680 goto out;
681
682 switch (notify) {
683 case VID_NOTIFY_CYCLE_BRN:
684 if (vo->vo_numlevels <= 3)
685 goto out;
686 /* FALLTHROUGH */
687 case VID_NOTIFY_INC_BRN:
688 case VID_NOTIFY_DEC_BRN:
689 case VID_NOTIFY_ZERO_BRN:
690 if (vo->vo_levels == NULL)
691 goto out;
692 level = vo_get_brightness(handle);
693 if (level < 0)
694 goto out;
695 break;
696 default:
697 kprintf("unknown notify: %#x from %s\n", notify,
698 acpi_name(handle));
699 goto out;
700 }
701
702 new_level = level;
703 switch (notify) {
704 case VID_NOTIFY_CYCLE_BRN:
705 for (i = 2; i < vo->vo_numlevels; i++)
706 if (vo->vo_levels[i] == level) {
707 new_level = vo->vo_numlevels > i + 1 ?
708 vo->vo_levels[i + 1] : vo->vo_levels[2];
709 break;
710 }
711 break;
712 case VID_NOTIFY_INC_BRN:
713 case VID_NOTIFY_DEC_BRN:
714 for (i = 0; i < vo->vo_numlevels; i++) {
715 j = vo->vo_levels[i];
716 if (notify == VID_NOTIFY_INC_BRN) {
717 if (j > level &&
718 (j < new_level || level == new_level))
719 new_level = j;
720 } else {
721 if (j < level &&
722 (j > new_level || level == new_level))
723 new_level = j;
724 }
725 }
726 break;
727 case VID_NOTIFY_ZERO_BRN:
728 for (i = 0; i < vo->vo_numlevels; i++)
729 if (vo->vo_levels[i] == 0) {
730 new_level = 0;
731 break;
732 }
733 break;
734 }
735 if (new_level != level) {
736 vo_set_brightness(handle, new_level);
737 vo->vo_brightness = new_level;
738 }
739
740 out:
741 ACPI_SERIAL_END(video_output);
742 }
743
744 /* ARGSUSED */
745 static int
acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS)746 acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS)
747 {
748 struct acpi_video_output *vo;
749 int state, err;
750
751 vo = (struct acpi_video_output *)arg1;
752 if (vo->handle == NULL)
753 return (ENXIO);
754 ACPI_SERIAL_BEGIN(video_output);
755 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0;
756 err = sysctl_handle_int(oidp, &state, 0, req);
757 if (err != 0 || req->newptr == NULL)
758 goto out;
759 vo_set_device_state(vo->handle,
760 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE));
761 out:
762 ACPI_SERIAL_END(video_output);
763 return (err);
764 }
765
766 /* ARGSUSED */
767 static int
acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS)768 acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS)
769 {
770 struct acpi_video_output *vo;
771 int level, preset, err;
772
773 vo = (struct acpi_video_output *)arg1;
774 ACPI_SERIAL_BEGIN(video_output);
775 if (vo->handle == NULL) {
776 err = ENXIO;
777 goto out;
778 }
779 if (vo->vo_levels == NULL) {
780 err = ENODEV;
781 goto out;
782 }
783
784 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ?
785 vo->vo_economy : vo->vo_fullpower;
786 level = vo->vo_brightness;
787 if (level == -1)
788 level = preset;
789
790 err = sysctl_handle_int(oidp, &level, 0, req);
791 if (err != 0 || req->newptr == NULL)
792 goto out;
793 if (level < -1 || level > 100) {
794 err = EINVAL;
795 goto out;
796 }
797
798 if (level != -1 && (err = acpi_video_vo_check_level(vo, level)))
799 goto out;
800 vo->vo_brightness = level;
801 vo_set_brightness(vo->handle, (level == -1) ? preset : level);
802
803 out:
804 ACPI_SERIAL_END(video_output);
805 return (err);
806 }
807
808 static int
acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS)809 acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS)
810 {
811 struct acpi_video_output *vo;
812 int i, level, *preset, err;
813
814 vo = (struct acpi_video_output *)arg1;
815 ACPI_SERIAL_BEGIN(video_output);
816 if (vo->handle == NULL) {
817 err = ENXIO;
818 goto out;
819 }
820 if (vo->vo_levels == NULL) {
821 err = ENODEV;
822 goto out;
823 }
824 preset = (arg2 == POWER_PROFILE_ECONOMY) ?
825 &vo->vo_economy : &vo->vo_fullpower;
826 level = *preset;
827 err = sysctl_handle_int(oidp, &level, 0, req);
828 if (err != 0 || req->newptr == NULL)
829 goto out;
830 if (level < -1 || level > 100) {
831 err = EINVAL;
832 goto out;
833 }
834 if (level == -1) {
835 i = (arg2 == POWER_PROFILE_ECONOMY) ?
836 BCL_ECONOMY : BCL_FULLPOWER;
837 level = vo->vo_levels[i];
838 } else if ((err = acpi_video_vo_check_level(vo, level)) != 0)
839 goto out;
840
841 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2))
842 vo_set_brightness(vo->handle, level);
843 *preset = level;
844
845 out:
846 ACPI_SERIAL_END(video_output);
847 return (err);
848 }
849
850 /* ARGSUSED */
851 static int
acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS)852 acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS)
853 {
854 struct acpi_video_output *vo;
855 int err;
856
857 vo = (struct acpi_video_output *)arg1;
858 ACPI_SERIAL_BEGIN(video_output);
859 if (vo->vo_levels == NULL) {
860 err = ENODEV;
861 goto out;
862 }
863 if (req->newptr != NULL) {
864 err = EPERM;
865 goto out;
866 }
867 err = sysctl_handle_opaque(oidp, vo->vo_levels,
868 vo->vo_numlevels * sizeof(*vo->vo_levels), req);
869
870 out:
871 ACPI_SERIAL_END(video_output);
872 return (err);
873 }
874
875 static void
vid_set_switch_policy(ACPI_HANDLE handle,UINT32 policy)876 vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy)
877 {
878 ACPI_STATUS status;
879
880 status = acpi_SetInteger(handle, "_DOS", policy);
881 if (ACPI_FAILURE(status))
882 kprintf("can't evaluate %s._DOS - %s\n",
883 acpi_name(handle), AcpiFormatException(status));
884 }
885
886 struct enum_callback_arg {
887 void (*callback)(ACPI_HANDLE, UINT32, void *);
888 void *context;
889 ACPI_OBJECT *dod_pkg;
890 int count;
891 };
892
893 static ACPI_STATUS
vid_enum_outputs_subr(ACPI_HANDLE handle,UINT32 level __unused,void * context,void ** retp __unused)894 vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused,
895 void *context, void **retp __unused)
896 {
897 ACPI_STATUS status;
898 UINT32 adr, val;
899 struct enum_callback_arg *argset;
900 size_t i;
901
902 ACPI_SERIAL_ASSERT(video);
903 argset = context;
904 status = acpi_GetInteger(handle, "_ADR", &adr);
905 if (ACPI_FAILURE(status))
906 return (AE_OK);
907
908 for (i = 0; i < argset->dod_pkg->Package.Count; i++) {
909 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 &&
910 (val & DOD_DEVID_MASK_FULL) ==
911 (adr & DOD_DEVID_MASK_FULL)) {
912 argset->callback(handle, val, argset->context);
913 argset->count++;
914 }
915 }
916
917 return (AE_OK);
918 }
919
920 static int
vid_enum_outputs(ACPI_HANDLE handle,void (* callback)(ACPI_HANDLE,UINT32,void *),void * context)921 vid_enum_outputs(ACPI_HANDLE handle,
922 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context)
923 {
924 ACPI_STATUS status;
925 ACPI_BUFFER dod_buf;
926 ACPI_OBJECT *res;
927 struct enum_callback_arg argset;
928
929 ACPI_SERIAL_ASSERT(video);
930 dod_buf.Length = ACPI_ALLOCATE_BUFFER;
931 dod_buf.Pointer = NULL;
932 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf);
933 if (ACPI_FAILURE(status)) {
934 if (status != AE_NOT_FOUND)
935 kprintf("can't evaluate %s._DOD - %s\n",
936 acpi_name(handle), AcpiFormatException(status));
937 argset.count = -1;
938 goto out;
939 }
940 res = (ACPI_OBJECT *)dod_buf.Pointer;
941 if (!ACPI_PKG_VALID(res, 1)) {
942 kprintf("evaluation of %s._DOD makes no sense\n",
943 acpi_name(handle));
944 argset.count = -1;
945 goto out;
946 }
947 if (callback == NULL) {
948 argset.count = res->Package.Count;
949 goto out;
950 }
951 argset.callback = callback;
952 argset.context = context;
953 argset.dod_pkg = res;
954 argset.count = 0;
955 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1,
956 vid_enum_outputs_subr, NULL, &argset, NULL);
957 if (ACPI_FAILURE(status))
958 kprintf("failed walking down %s - %s\n",
959 acpi_name(handle), AcpiFormatException(status));
960 out:
961 if (dod_buf.Pointer != NULL)
962 AcpiOsFree(dod_buf.Pointer);
963 return (argset.count);
964 }
965
966 static int
vo_get_brightness_levels(ACPI_HANDLE handle,int ** levelp)967 vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp)
968 {
969 ACPI_STATUS status;
970 ACPI_BUFFER bcl_buf;
971 ACPI_OBJECT *res;
972 int num, i, n, *levels;
973
974 bcl_buf.Length = ACPI_ALLOCATE_BUFFER;
975 bcl_buf.Pointer = NULL;
976 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf);
977 if (ACPI_FAILURE(status)) {
978 if (status != AE_NOT_FOUND)
979 kprintf("can't evaluate %s._BCL - %s\n",
980 acpi_name(handle), AcpiFormatException(status));
981 goto out;
982 }
983 res = (ACPI_OBJECT *)bcl_buf.Pointer;
984 if (!ACPI_PKG_VALID(res, 2)) {
985 kprintf("evaluation of %s._BCL makes no sense\n",
986 acpi_name(handle));
987 goto out;
988 }
989 num = res->Package.Count;
990 if (num < 2 || levelp == NULL)
991 goto out;
992 levels = AcpiOsAllocate(num * sizeof(*levels));
993 if (levels == NULL)
994 goto out;
995 for (i = 0, n = 0; i < num; i++)
996 if (acpi_PkgInt32(res, i, &levels[n]) == 0)
997 n++;
998 if (n < 2) {
999 AcpiOsFree(levels);
1000 goto out;
1001 }
1002 *levelp = levels;
1003 return (n);
1004
1005 out:
1006 if (bcl_buf.Pointer != NULL)
1007 AcpiOsFree(bcl_buf.Pointer);
1008 return (0);
1009 }
1010
1011 static int
vo_get_brightness(ACPI_HANDLE handle)1012 vo_get_brightness(ACPI_HANDLE handle)
1013 {
1014 UINT32 level;
1015 ACPI_STATUS status;
1016
1017 ACPI_SERIAL_ASSERT(video_output);
1018 status = acpi_GetInteger(handle, "_BQC", &level);
1019 if (ACPI_FAILURE(status)) {
1020 kprintf("can't evaluate %s._BQC - %s\n", acpi_name(handle),
1021 AcpiFormatException(status));
1022 return (-1);
1023 }
1024 if (level > 100)
1025 return (-1);
1026
1027 return (level);
1028 }
1029
1030 static void
vo_set_brightness(ACPI_HANDLE handle,int level)1031 vo_set_brightness(ACPI_HANDLE handle, int level)
1032 {
1033 ACPI_STATUS status;
1034
1035 ACPI_SERIAL_ASSERT(video_output);
1036 status = acpi_SetInteger(handle, "_BCM", level);
1037 if (ACPI_FAILURE(status))
1038 kprintf("can't evaluate %s._BCM - %s\n",
1039 acpi_name(handle), AcpiFormatException(status));
1040 }
1041
1042 static UINT32
vo_get_device_status(ACPI_HANDLE handle)1043 vo_get_device_status(ACPI_HANDLE handle)
1044 {
1045 UINT32 dcs;
1046 ACPI_STATUS status;
1047
1048 ACPI_SERIAL_ASSERT(video_output);
1049 dcs = 0;
1050 status = acpi_GetInteger(handle, "_DCS", &dcs);
1051 if (ACPI_FAILURE(status))
1052 kprintf("can't evaluate %s._DCS - %s\n",
1053 acpi_name(handle), AcpiFormatException(status));
1054
1055 return (dcs);
1056 }
1057
1058 static UINT32
vo_get_graphics_state(ACPI_HANDLE handle)1059 vo_get_graphics_state(ACPI_HANDLE handle)
1060 {
1061 UINT32 dgs;
1062 ACPI_STATUS status;
1063
1064 dgs = 0;
1065 status = acpi_GetInteger(handle, "_DGS", &dgs);
1066 if (ACPI_FAILURE(status))
1067 kprintf("can't evaluate %s._DGS - %s\n",
1068 acpi_name(handle), AcpiFormatException(status));
1069
1070 return (dgs);
1071 }
1072
1073 static void
vo_set_device_state(ACPI_HANDLE handle,UINT32 state)1074 vo_set_device_state(ACPI_HANDLE handle, UINT32 state)
1075 {
1076 ACPI_STATUS status;
1077
1078 ACPI_SERIAL_ASSERT(video_output);
1079 status = acpi_SetInteger(handle, "_DSS", state);
1080 if (ACPI_FAILURE(status))
1081 kprintf("can't evaluate %s._DSS - %s\n",
1082 acpi_name(handle), AcpiFormatException(status));
1083 }
1084