2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/sys/dev/sound/pcm/mixer.c,v 1.43.2.4 2006/04/04 17:43:48 ariff Exp $
27 * $DragonFly: src/sys/dev/sound/pcm/mixer.c,v 1.14 2007/01/04 21:47:03 corecode Exp $
30 #include <dev/sound/pcm/sound.h>
34 SND_DECLARE_FILE("$DragonFly: src/sys/dev/sound/pcm/mixer.c,v 1.14 2007/01/04 21:47:03 corecode Exp $");
36 MALLOC_DEFINE(M_MIXER, "mixer", "mixer");
38 #define MIXER_NAMELEN 16
48 u_int32_t hwvol_mute_level;
53 char name[MIXER_NAMELEN];
54 struct spinlock *lock;
57 static u_int16_t snd_mixerdefaults[SOUND_MIXER_NRDEVICES] = {
58 [SOUND_MIXER_VOLUME] = 75,
59 [SOUND_MIXER_BASS] = 50,
60 [SOUND_MIXER_TREBLE] = 50,
61 [SOUND_MIXER_SYNTH] = 75,
62 [SOUND_MIXER_PCM] = 75,
63 [SOUND_MIXER_SPEAKER] = 75,
64 [SOUND_MIXER_LINE] = 75,
65 [SOUND_MIXER_MIC] = 0,
66 [SOUND_MIXER_CD] = 75,
67 [SOUND_MIXER_IGAIN] = 0,
68 [SOUND_MIXER_LINE1] = 75,
69 [SOUND_MIXER_VIDEO] = 75,
70 [SOUND_MIXER_RECLEV] = 0,
71 [SOUND_MIXER_OGAIN] = 50,
72 [SOUND_MIXER_MONITOR] = 75,
75 static char* snd_mixernames[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES;
77 static d_open_t mixer_open;
78 static d_close_t mixer_close;
80 static struct dev_ops mixer_cdevsw = {
81 { "mixer", SND_CDEV_MAJOR, D_TRACKCLOSE },
82 /* .d_flags = D_TRACKCLOSE | D_NEEDGIANT, */
84 .d_close = mixer_close,
85 .d_ioctl = mixer_ioctl,
89 static eventhandler_tag mixer_ehtag;
93 mixer_get_devt(device_t dev)
95 struct snddev_info *snddev;
97 snddev = device_get_softc(dev);
99 return snddev->mixer_dev;
104 mixer_lookup(char *devname)
108 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
109 if (strncmp(devname, snd_mixernames[i],
110 strlen(snd_mixernames[i])) == 0)
117 * Always called with mixer->lock held.
120 mixer_set(struct snd_mixer *mixer, unsigned dev, unsigned lev)
122 struct snddev_info *d;
126 if ((dev >= SOUND_MIXER_NRDEVICES) || (0 == (mixer->devs & (1 << dev))))
129 l = min((lev & 0x00ff), 100);
130 r = min(((lev & 0xff00) >> 8), 100);
132 d = device_get_softc(mixer->dev);
133 if (dev == SOUND_MIXER_PCM && d &&
134 (d->flags & SD_F_SOFTVOL)) {
135 struct snddev_channel *sce;
136 struct pcm_channel *ch;
138 snd_mtxunlock(mixer->lock);
139 SLIST_FOREACH(sce, &d->channels, link) {
142 if (ch->direction == PCMDIR_PLAY &&
143 (ch->feederflags & (1 << FEEDER_VOLUME)))
144 chn_setvolume(ch, l, r);
147 snd_mtxlock(mixer->lock);
149 v = MIXER_SET(mixer, dev, l, r);
154 mixer->level[dev] = l | (r << 8);
159 mixer_get(struct snd_mixer *mixer, int dev)
161 if ((dev < SOUND_MIXER_NRDEVICES) && (mixer->devs & (1 << dev)))
162 return mixer->level[dev];
167 mixer_setrecsrc(struct snd_mixer *mixer, u_int32_t src)
169 src &= mixer->recdevs;
171 src = SOUND_MASK_MIC;
172 mixer->recsrc = MIXER_SETRECSRC(mixer, src);
177 mixer_getrecsrc(struct snd_mixer *mixer)
179 return mixer->recsrc;
183 mix_setdevs(struct snd_mixer *m, u_int32_t v)
185 struct snddev_info *d = device_get_softc(m->dev);
186 if (d && (d->flags & SD_F_SOFTVOL))
192 mix_setrecdevs(struct snd_mixer *m, u_int32_t v)
198 mix_getdevs(struct snd_mixer *m)
204 mix_getrecdevs(struct snd_mixer *m)
210 mix_getdevinfo(struct snd_mixer *m)
216 mixer_init(device_t dev, kobj_class_t cls, void *devinfo)
218 struct snddev_info *snddev;
224 m = (struct snd_mixer *)kobj_create(cls, M_MIXER, M_WAITOK | M_ZERO);
225 ksnprintf(m->name, MIXER_NAMELEN, "%s:mixer", device_get_nameunit(dev));
226 m->lock = snd_mtxcreate(m->name, "pcm mixer");
228 m->devinfo = devinfo;
235 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
236 v = snd_mixerdefaults[i];
238 if (resource_int_value(device_get_name(dev),
239 device_get_unit(dev), snd_mixernames[i], &val) == 0) {
240 if (val >= 0 && val <= 100) {
245 snd_mtxlock(m->lock);
246 mixer_set(m, i, v | (v << 8));
247 snd_mtxunlock(m->lock);
250 mixer_setrecsrc(m, SOUND_MASK_MIC);
252 unit = device_get_unit(dev);
253 dev_ops_add(&mixer_cdevsw, -1, PCMMKMINOR(unit, SND_DEV_CTL, 0));
254 pdev = make_dev(&mixer_cdevsw, PCMMKMINOR(unit, SND_DEV_CTL, 0),
255 UID_ROOT, GID_WHEEL, 0666, "mixer%d", unit);
258 snddev = device_get_softc(dev);
259 snddev->mixer_dev = pdev;
264 snd_mtxfree(m->lock);
265 kobj_delete((kobj_t)m, M_MIXER);
270 mixer_uninit(device_t dev)
274 struct snddev_info *d;
278 d = device_get_softc(dev);
279 pdev = mixer_get_devt(dev);
280 if (d == NULL || pdev == NULL || pdev->si_drv1 == NULL)
283 snd_mtxlock(m->lock);
286 snd_mtxunlock(m->lock);
290 pdev->si_drv1 = NULL;
292 unit = device_get_unit(dev);
293 dev_ops_remove(&mixer_cdevsw, -1, PCMMKMINOR(unit, SND_DEV_CTL, 0));
295 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
298 mixer_setrecsrc(m, SOUND_MASK_MIC);
302 snd_mtxunlock(m->lock);
303 snd_mtxfree(m->lock);
304 kobj_delete((kobj_t)m, M_MIXER);
312 mixer_reinit(device_t dev)
318 pdev = mixer_get_devt(dev);
320 snd_mtxlock(m->lock);
324 snd_mtxunlock(m->lock);
328 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
329 mixer_set(m, i, m->level[i]);
331 mixer_setrecsrc(m, m->recsrc);
332 snd_mtxunlock(m->lock);
339 sysctl_hw_snd_hwvol_mixer(SYSCTL_HANDLER_ARGS)
346 snd_mtxlock(m->lock);
347 strncpy(devname, snd_mixernames[m->hwvol_mixer], sizeof(devname));
348 snd_mtxunlock(m->lock);
349 error = sysctl_handle_string(oidp, &devname[0], sizeof(devname), req);
350 snd_mtxlock(m->lock);
351 if (error == 0 && req->newptr != NULL) {
352 dev = mixer_lookup(devname);
354 snd_mtxunlock(m->lock);
357 else if (dev != m->hwvol_mixer) {
358 m->hwvol_mixer = dev;
362 snd_mtxunlock(m->lock);
368 mixer_hwvol_init(device_t dev)
373 pdev = mixer_get_devt(dev);
376 m->hwvol_mixer = SOUND_MIXER_VOLUME;
379 SYSCTL_ADD_INT(snd_sysctl_tree(dev), SYSCTL_CHILDREN(snd_sysctl_tree_top(dev)),
380 OID_AUTO, "hwvol_step", CTLFLAG_RW, &m->hwvol_step, 0, "");
381 SYSCTL_ADD_PROC(snd_sysctl_tree(dev), SYSCTL_CHILDREN(snd_sysctl_tree_top(dev)),
382 OID_AUTO, "hwvol_mixer", CTLTYPE_STRING | CTLFLAG_RW, m, 0,
383 sysctl_hw_snd_hwvol_mixer, "A", "");
389 mixer_hwvol_mute(device_t dev)
394 pdev = mixer_get_devt(dev);
396 snd_mtxlock(m->lock);
397 if (m->hwvol_muted) {
399 mixer_set(m, m->hwvol_mixer, m->hwvol_mute_level);
402 m->hwvol_mute_level = mixer_get(m, m->hwvol_mixer);
403 mixer_set(m, m->hwvol_mixer, 0);
405 snd_mtxunlock(m->lock);
409 mixer_hwvol_step(device_t dev, int left_step, int right_step)
412 int level, left, right;
415 pdev = mixer_get_devt(dev);
417 snd_mtxlock(m->lock);
418 if (m->hwvol_muted) {
420 level = m->hwvol_mute_level;
422 level = mixer_get(m, m->hwvol_mixer);
426 left += left_step * m->hwvol_step;
429 right += right_step * m->hwvol_step;
432 mixer_set(m, m->hwvol_mixer, left | right << 8);
434 snd_mtxunlock(m->lock);
437 /* ----------------------------------------------------------------------- */
440 mixer_open(struct dev_open_args *ap)
442 struct cdev *i_dev = ap->a_head.a_dev;
446 snd_mtxlock(m->lock);
450 snd_mtxunlock(m->lock);
455 mixer_close(struct dev_close_args *ap)
457 struct cdev *i_dev = ap->a_head.a_dev;
461 snd_mtxlock(m->lock);
464 snd_mtxunlock(m->lock);
469 snd_mtxunlock(m->lock);
474 mixer_ioctl(struct dev_ioctl_args *ap)
476 struct cdev *i_dev = ap->a_head.a_dev;
477 u_long cmd = ap->a_cmd;
478 caddr_t arg = ap->a_data;
479 int mode = ap->a_fflag;
481 int ret, *arg_i = (int *)arg;
482 int v = -1, j = cmd & 0xff;
489 snd_mtxlock(m->lock);
490 if (mode != -1 && !m->busy) {
491 snd_mtxunlock(m->lock);
495 if ((cmd & MIXER_WRITE(0)) == MIXER_WRITE(0)) {
496 if (j == SOUND_MIXER_RECSRC)
497 ret = mixer_setrecsrc(m, *arg_i);
499 ret = mixer_set(m, j, *arg_i);
500 snd_mtxunlock(m->lock);
501 return (ret == 0)? 0 : ENXIO;
504 if ((cmd & MIXER_READ(0)) == MIXER_READ(0)) {
506 case SOUND_MIXER_DEVMASK:
507 case SOUND_MIXER_CAPS:
508 case SOUND_MIXER_STEREODEVS:
512 case SOUND_MIXER_RECMASK:
513 v = mix_getrecdevs(m);
516 case SOUND_MIXER_RECSRC:
517 v = mixer_getrecsrc(m);
524 snd_mtxunlock(m->lock);
525 return (v != -1)? 0 : ENXIO;
527 snd_mtxunlock(m->lock);
533 mixer_clone(void *arg, struct ucred *cred, char *name, int namelen,
536 struct snddev_info *sd;
540 if (strcmp(name, "mixer") == 0) {
541 sd = devclass_get_softc(pcm_devclass, snd_unit);
542 if (sd != NULL && sd->mixer_dev != NULL) {
543 *dev = sd->mixer_dev;
550 mixer_sysinit(void *p)
552 mixer_ehtag = EVENTHANDLER_REGISTER(dev_clone, mixer_clone, 0, 1000);
556 mixer_sysuninit(void *p)
558 if (mixer_ehtag != NULL)
559 EVENTHANDLER_DEREGISTER(dev_clone, mixer_ehtag);
562 SYSINIT(mixer_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, mixer_sysinit, NULL);
563 SYSUNINIT(mixer_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, mixer_sysuninit, NULL);