2 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org>
3 * Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006
4 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #ifdef HAVE_KERNEL_OPTION_HEADERS
33 #include <dev/sound/pcm/sound.h>
35 #include "feeder_if.h"
38 SND_DECLARE_FILE("$FreeBSD$");
40 MALLOC_DEFINE(M_MIXER, "mixer", "mixer");
42 static int mixer_bypass = 1;
43 TUNABLE_INT("hw.snd.vpc_mixer_bypass", &mixer_bypass);
44 SYSCTL_INT(_hw_snd, OID_AUTO, vpc_mixer_bypass, CTLFLAG_RW,
46 "control channel pcm/rec volume, bypassing real mixer device");
48 #define MIXER_NAMELEN 16
58 u_int32_t hwvol_mute_level;
66 char name[MIXER_NAMELEN];
68 oss_mixer_enuminfo enuminfo;
70 * Counter is incremented when applications change any of this
71 * mixer's controls. A change in value indicates that persistent
72 * mixer applications should update their displays.
77 static u_int16_t snd_mixerdefaults[SOUND_MIXER_NRDEVICES] = {
78 [SOUND_MIXER_VOLUME] = 75,
79 [SOUND_MIXER_BASS] = 50,
80 [SOUND_MIXER_TREBLE] = 50,
81 [SOUND_MIXER_SYNTH] = 75,
82 [SOUND_MIXER_PCM] = 75,
83 [SOUND_MIXER_SPEAKER] = 75,
84 [SOUND_MIXER_LINE] = 75,
85 [SOUND_MIXER_MIC] = 0,
86 [SOUND_MIXER_CD] = 75,
87 [SOUND_MIXER_IGAIN] = 0,
88 [SOUND_MIXER_LINE1] = 75,
89 [SOUND_MIXER_VIDEO] = 75,
90 [SOUND_MIXER_RECLEV] = 0,
91 [SOUND_MIXER_OGAIN] = 50,
92 [SOUND_MIXER_MONITOR] = 75,
95 static char* snd_mixernames[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES;
97 static d_open_t mixer_open;
98 static d_close_t mixer_close;
99 static d_ioctl_t mixer_ioctl;
101 static struct cdevsw mixer_cdevsw = {
102 .d_version = D_VERSION,
103 .d_open = mixer_open,
104 .d_close = mixer_close,
105 .d_ioctl = mixer_ioctl,
110 * Keeps a count of mixer devices; used only by OSSv4 SNDCTL_SYSINFO ioctl.
114 static eventhandler_tag mixer_ehtag = NULL;
117 mixer_get_devt(device_t dev)
119 struct snddev_info *snddev;
121 snddev = device_get_softc(dev);
123 return snddev->mixer_dev;
127 mixer_lookup(char *devname)
131 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
132 if (strncmp(devname, snd_mixernames[i],
133 strlen(snd_mixernames[i])) == 0)
138 #define MIXER_SET_UNLOCK(x, y) do { \
140 snd_mtxunlock((x)->lock); \
143 #define MIXER_SET_LOCK(x, y) do { \
145 snd_mtxlock((x)->lock); \
149 mixer_set_softpcmvol(struct snd_mixer *m, struct snddev_info *d,
150 u_int left, u_int right)
152 struct pcm_channel *c;
153 int dropmtx, acquiremtx;
155 if (!PCM_REGISTERED(d))
158 if (mtx_owned(m->lock))
163 if (!(d->flags & SD_F_MPSAFE) || mtx_owned(d->lock) != 0)
169 * Be careful here. If we're coming from cdev ioctl, it is OK to
170 * not doing locking AT ALL (except on individual channel) since
171 * we've been heavily guarded by pcm cv, or if we're still
172 * under Giant influence. Since we also have mix_* calls, we cannot
173 * assume such protection and just do the lock as usuall.
175 MIXER_SET_UNLOCK(m, dropmtx);
176 MIXER_SET_LOCK(d, acquiremtx);
178 CHN_FOREACH(c, d, channels.pcm.busy) {
180 if (c->direction == PCMDIR_PLAY &&
181 (c->feederflags & (1 << FEEDER_VOLUME)))
182 chn_setvolume_multi(c, SND_VOL_C_MASTER, left, right,
183 (left + right) >> 1);
187 MIXER_SET_UNLOCK(d, acquiremtx);
188 MIXER_SET_LOCK(m, dropmtx);
194 mixer_set_eq(struct snd_mixer *m, struct snddev_info *d,
195 u_int dev, u_int level)
197 struct pcm_channel *c;
198 struct pcm_feeder *f;
199 int tone, dropmtx, acquiremtx;
201 if (dev == SOUND_MIXER_TREBLE)
202 tone = FEEDEQ_TREBLE;
203 else if (dev == SOUND_MIXER_BASS)
208 if (!PCM_REGISTERED(d))
211 if (mtx_owned(m->lock))
216 if (!(d->flags & SD_F_MPSAFE) || mtx_owned(d->lock) != 0)
222 * Be careful here. If we're coming from cdev ioctl, it is OK to
223 * not doing locking AT ALL (except on individual channel) since
224 * we've been heavily guarded by pcm cv, or if we're still
225 * under Giant influence. Since we also have mix_* calls, we cannot
226 * assume such protection and just do the lock as usuall.
228 MIXER_SET_UNLOCK(m, dropmtx);
229 MIXER_SET_LOCK(d, acquiremtx);
231 CHN_FOREACH(c, d, channels.pcm.busy) {
233 f = chn_findfeeder(c, FEEDER_EQ);
235 (void)FEEDER_SET(f, tone, level);
239 MIXER_SET_UNLOCK(d, acquiremtx);
240 MIXER_SET_LOCK(m, dropmtx);
246 mixer_set(struct snd_mixer *m, u_int dev, u_int lev)
248 struct snddev_info *d;
250 u_int32_t parent = SOUND_MIXER_NONE, child = 0;
254 if (m == NULL || dev >= SOUND_MIXER_NRDEVICES ||
255 (0 == (m->devs & (1 << dev))))
258 l = min((lev & 0x00ff), 100);
259 r = min(((lev & 0xff00) >> 8), 100);
260 realdev = m->realdev[dev];
262 d = device_get_softc(m->dev);
266 /* It is safe to drop this mutex due to Giant. */
267 if (!(d->flags & SD_F_MPSAFE) && mtx_owned(m->lock) != 0)
272 MIXER_SET_UNLOCK(m, dropmtx);
274 /* TODO: recursive handling */
275 parent = m->parent[dev];
276 if (parent >= SOUND_MIXER_NRDEVICES)
277 parent = SOUND_MIXER_NONE;
278 if (parent == SOUND_MIXER_NONE)
279 child = m->child[dev];
281 if (parent != SOUND_MIXER_NONE) {
282 tl = (l * (m->level[parent] & 0x00ff)) / 100;
283 tr = (r * ((m->level[parent] & 0xff00) >> 8)) / 100;
284 if (dev == SOUND_MIXER_PCM && (d->flags & SD_F_SOFTPCMVOL))
285 (void)mixer_set_softpcmvol(m, d, tl, tr);
286 else if (realdev != SOUND_MIXER_NONE &&
287 MIXER_SET(m, realdev, tl, tr) < 0) {
288 MIXER_SET_LOCK(m, dropmtx);
291 } else if (child != 0) {
292 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
293 if (!(child & (1 << i)) || m->parent[i] != dev)
295 realdev = m->realdev[i];
296 tl = (l * (m->level[i] & 0x00ff)) / 100;
297 tr = (r * ((m->level[i] & 0xff00) >> 8)) / 100;
298 if (i == SOUND_MIXER_PCM &&
299 (d->flags & SD_F_SOFTPCMVOL))
300 (void)mixer_set_softpcmvol(m, d, tl, tr);
301 else if (realdev != SOUND_MIXER_NONE)
302 MIXER_SET(m, realdev, tl, tr);
304 realdev = m->realdev[dev];
305 if (realdev != SOUND_MIXER_NONE &&
306 MIXER_SET(m, realdev, l, r) < 0) {
307 MIXER_SET_LOCK(m, dropmtx);
311 if (dev == SOUND_MIXER_PCM && (d->flags & SD_F_SOFTPCMVOL))
312 (void)mixer_set_softpcmvol(m, d, l, r);
313 else if ((dev == SOUND_MIXER_TREBLE ||
314 dev == SOUND_MIXER_BASS) && (d->flags & SD_F_EQ))
315 (void)mixer_set_eq(m, d, dev, (l + r) >> 1);
316 else if (realdev != SOUND_MIXER_NONE &&
317 MIXER_SET(m, realdev, l, r) < 0) {
318 MIXER_SET_LOCK(m, dropmtx);
323 MIXER_SET_LOCK(m, dropmtx);
325 m->level[dev] = l | (r << 8);
331 mixer_get(struct snd_mixer *mixer, int dev)
333 if ((dev < SOUND_MIXER_NRDEVICES) && (mixer->devs & (1 << dev)))
334 return mixer->level[dev];
340 mixer_setrecsrc(struct snd_mixer *mixer, u_int32_t src)
342 struct snddev_info *d;
346 d = device_get_softc(mixer->dev);
349 if (!(d->flags & SD_F_MPSAFE) && mtx_owned(mixer->lock) != 0)
353 src &= mixer->recdevs;
355 src = SOUND_MASK_MIC;
356 /* It is safe to drop this mutex due to Giant. */
357 MIXER_SET_UNLOCK(mixer, dropmtx);
358 recsrc = MIXER_SETRECSRC(mixer, src);
359 MIXER_SET_LOCK(mixer, dropmtx);
361 mixer->recsrc = recsrc;
367 mixer_getrecsrc(struct snd_mixer *mixer)
369 return mixer->recsrc;
373 * @brief Retrieve the route number of the current recording device
375 * OSSv4 assigns routing numbers to recording devices, unlike the previous
376 * API which relied on a fixed table of device numbers and names. This
377 * function returns the routing number of the device currently selected
380 * For now, this function is kind of a goofy compatibility stub atop the
381 * existing sound system. (For example, in theory, the old sound system
382 * allows multiple recording devices to be specified via a bitmask.)
384 * @param m mixer context container thing
387 * @retval EIDRM no recording device found (generally not possible)
388 * @todo Ask about error code
391 mixer_get_recroute(struct snd_mixer *m, int *route)
397 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
398 /** @todo can user set a multi-device mask? (== or &?) */
399 if ((1 << i) == m->recsrc)
401 if ((1 << i) & m->recdevs)
405 if (i == SOUND_MIXER_NRDEVICES)
413 * @brief Select a device for recording
415 * This function sets a recording source based on a recording device's
416 * routing number. Said number is translated to an old school recdev
417 * mask and passed over mixer_setrecsrc.
419 * @param m mixer context container thing
421 * @retval 0 success(?)
422 * @retval EINVAL User specified an invalid device number
423 * @retval otherwise error from mixer_setrecsrc
426 mixer_set_recroute(struct snd_mixer *m, int route)
433 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
434 if ((1 << i) & m->recdevs) {
441 if (i == SOUND_MIXER_NRDEVICES)
444 ret = mixer_setrecsrc(m, (1 << i));
450 mix_setdevs(struct snd_mixer *m, u_int32_t v)
452 struct snddev_info *d;
458 d = device_get_softc(m->dev);
459 if (d != NULL && (d->flags & SD_F_SOFTPCMVOL))
461 if (d != NULL && (d->flags & SD_F_EQ))
462 v |= SOUND_MASK_TREBLE | SOUND_MASK_BASS;
463 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
464 if (m->parent[i] < SOUND_MIXER_NRDEVICES)
465 v |= 1 << m->parent[i];
472 * @brief Record mask of available recording devices
474 * Calling functions are responsible for defining the mask of available
475 * recording devices. This function records that value in a structure
476 * used by the rest of the mixer code.
478 * This function also populates a structure used by the SNDCTL_DSP_*RECSRC*
479 * family of ioctls that are part of OSSV4. All recording device labels
480 * are concatenated in ascending order corresponding to their routing
481 * numbers. (Ex: a system might have 0 => 'vol', 1 => 'cd', 2 => 'line',
482 * etc.) For now, these labels are just the standard recording device
483 * names (cd, line1, etc.), but will eventually be fully dynamic and user
486 * @param m mixer device context container thing
487 * @param v mask of recording devices
490 mix_setrecdevs(struct snd_mixer *m, u_int32_t v)
492 oss_mixer_enuminfo *ei;
494 int i, nvalues, nwrote, nleft, ncopied;
500 nleft = sizeof(ei->strings);
503 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
505 ei->strindex[nvalues] = nwrote;
506 ncopied = strlcpy(loc, snd_mixernames[i], nleft) + 1;
507 /* strlcpy retval doesn't include terminator */
514 * XXX I don't think this should ever be possible.
515 * Even with a move to dynamic device/channel names,
516 * each label is limited to ~16 characters, so that'd
517 * take a LOT to fill this buffer.
519 if ((nleft <= 0) || (nvalues >= OSS_ENUM_MAXVALUE)) {
520 device_printf(m->dev,
521 "mix_setrecdevs: Not enough room to store device names--please file a bug report.\n");
522 device_printf(m->dev,
523 "mix_setrecdevs: Please include details about your sound hardware, OS version, etc.\n");
527 loc = &ei->strings[nwrote];
532 * NB: The SNDCTL_DSP_GET_RECSRC_NAMES ioctl ignores the dev
535 ei->nvalues = nvalues;
540 mix_setparentchild(struct snd_mixer *m, u_int32_t parent, u_int32_t childs)
545 if (m == NULL || parent >= SOUND_MIXER_NRDEVICES)
547 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
550 if (childs & (1 << i)) {
552 if (m->parent[i] < SOUND_MIXER_NRDEVICES)
553 m->child[m->parent[i]] &= ~(1 << i);
554 m->parent[i] = parent;
558 mask &= ~(1 << parent);
559 m->child[parent] = mask;
563 mix_setrealdev(struct snd_mixer *m, u_int32_t dev, u_int32_t realdev)
565 if (m == NULL || dev >= SOUND_MIXER_NRDEVICES ||
566 !(realdev == SOUND_MIXER_NONE || realdev < SOUND_MIXER_NRDEVICES))
568 m->realdev[dev] = realdev;
572 mix_getparent(struct snd_mixer *m, u_int32_t dev)
574 if (m == NULL || dev >= SOUND_MIXER_NRDEVICES)
575 return SOUND_MIXER_NONE;
576 return m->parent[dev];
580 mix_getchild(struct snd_mixer *m, u_int32_t dev)
582 if (m == NULL || dev >= SOUND_MIXER_NRDEVICES)
584 return m->child[dev];
588 mix_getdevs(struct snd_mixer *m)
594 mix_getrecdevs(struct snd_mixer *m)
600 mix_getdevinfo(struct snd_mixer *m)
605 static struct snd_mixer *
606 mixer_obj_create(device_t dev, kobj_class_t cls, void *devinfo,
607 int type, const char *desc)
612 KASSERT(dev != NULL && cls != NULL && devinfo != NULL,
613 ("%s(): NULL data dev=%p cls=%p devinfo=%p",
614 __func__, dev, cls, devinfo));
615 KASSERT(type == MIXER_TYPE_PRIMARY || type == MIXER_TYPE_SECONDARY,
616 ("invalid mixer type=%d", type));
618 m = (struct snd_mixer *)kobj_create(cls, M_MIXER, M_WAITOK | M_ZERO);
619 snprintf(m->name, sizeof(m->name), "%s:mixer",
620 device_get_nameunit(dev));
622 strlcat(m->name, ":", sizeof(m->name));
623 strlcat(m->name, desc, sizeof(m->name));
625 m->lock = snd_mtxcreate(m->name, (type == MIXER_TYPE_PRIMARY) ?
626 "primary pcm mixer" : "secondary pcm mixer");
628 m->devinfo = devinfo;
631 for (i = 0; i < (sizeof(m->parent) / sizeof(m->parent[0])); i++) {
632 m->parent[i] = SOUND_MIXER_NONE;
638 snd_mtxlock(m->lock);
639 snd_mtxfree(m->lock);
640 kobj_delete((kobj_t)m, M_MIXER);
648 mixer_delete(struct snd_mixer *m)
650 KASSERT(m != NULL, ("NULL snd_mixer"));
651 KASSERT(m->type == MIXER_TYPE_SECONDARY,
652 ("%s(): illegal mixer type=%d", __func__, m->type));
654 /* mixer uninit can sleep --hps */
658 snd_mtxfree(m->lock);
659 kobj_delete((kobj_t)m, M_MIXER);
667 mixer_create(device_t dev, kobj_class_t cls, void *devinfo, const char *desc)
671 m = mixer_obj_create(dev, cls, devinfo, MIXER_TYPE_SECONDARY, desc);
680 mixer_init(device_t dev, kobj_class_t cls, void *devinfo)
682 struct snddev_info *snddev;
686 int i, unit, devunit, val;
688 snddev = device_get_softc(dev);
692 if (resource_int_value(device_get_name(dev),
693 device_get_unit(dev), "eq", &val) == 0 && val != 0) {
694 snddev->flags |= SD_F_EQ;
695 if ((val & SD_F_EQ_MASK) == val)
696 snddev->flags |= val;
698 snddev->flags |= SD_F_EQ_DEFAULT;
699 snddev->eqpreamp = 0;
702 m = mixer_obj_create(dev, cls, devinfo, MIXER_TYPE_PRIMARY, NULL);
706 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
707 v = snd_mixerdefaults[i];
709 if (resource_int_value(device_get_name(dev),
710 device_get_unit(dev), snd_mixernames[i], &val) == 0) {
711 if (val >= 0 && val <= 100) {
716 mixer_set(m, i, v | (v << 8));
719 mixer_setrecsrc(m, SOUND_MASK_MIC);
721 unit = device_get_unit(dev);
722 devunit = snd_mkunit(unit, SND_DEV_CTL, 0);
723 pdev = make_dev(&mixer_cdevsw, PCMMINOR(devunit),
724 UID_ROOT, GID_WHEEL, 0666, "mixer%d", unit);
726 snddev->mixer_dev = pdev;
731 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
732 if (!(m->devs & (1 << i)))
734 if (m->realdev[i] != i) {
735 device_printf(dev, "Mixer \"%s\" -> \"%s\":",
737 (m->realdev[i] < SOUND_MIXER_NRDEVICES) ?
738 snd_mixernames[m->realdev[i]] : "none");
740 device_printf(dev, "Mixer \"%s\":",
743 if (m->parent[i] < SOUND_MIXER_NRDEVICES)
744 printf(" parent=\"%s\"",
745 snd_mixernames[m->parent[i]]);
746 if (m->child[i] != 0)
747 printf(" child=0x%08x", m->child[i]);
750 if (snddev->flags & SD_F_SOFTPCMVOL)
751 device_printf(dev, "Soft PCM mixer ENABLED\n");
752 if (snddev->flags & SD_F_EQ)
753 device_printf(dev, "EQ Treble/Bass ENABLED\n");
760 mixer_uninit(device_t dev)
763 struct snddev_info *d;
767 d = device_get_softc(dev);
768 pdev = mixer_get_devt(dev);
769 if (d == NULL || pdev == NULL || pdev->si_drv1 == NULL)
773 KASSERT(m != NULL, ("NULL snd_mixer"));
774 KASSERT(m->type == MIXER_TYPE_PRIMARY,
775 ("%s(): illegal mixer type=%d", __func__, m->type));
777 snd_mtxlock(m->lock);
780 snd_mtxunlock(m->lock);
784 /* destroy dev can sleep --hps */
786 snd_mtxunlock(m->lock);
788 pdev->si_drv1 = NULL;
791 snd_mtxlock(m->lock);
793 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
796 mixer_setrecsrc(m, SOUND_MASK_MIC);
798 snd_mtxunlock(m->lock);
800 /* mixer uninit can sleep --hps */
804 snd_mtxfree(m->lock);
805 kobj_delete((kobj_t)m, M_MIXER);
815 mixer_reinit(device_t dev)
821 pdev = mixer_get_devt(dev);
823 snd_mtxlock(m->lock);
827 snd_mtxunlock(m->lock);
831 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
832 mixer_set(m, i, m->level[i]);
834 mixer_setrecsrc(m, m->recsrc);
835 snd_mtxunlock(m->lock);
841 sysctl_hw_snd_hwvol_mixer(SYSCTL_HANDLER_ARGS)
848 snd_mtxlock(m->lock);
849 strlcpy(devname, snd_mixernames[m->hwvol_mixer], sizeof(devname));
850 snd_mtxunlock(m->lock);
851 error = sysctl_handle_string(oidp, &devname[0], sizeof(devname), req);
852 snd_mtxlock(m->lock);
853 if (error == 0 && req->newptr != NULL) {
854 dev = mixer_lookup(devname);
856 snd_mtxunlock(m->lock);
859 else if (dev != m->hwvol_mixer) {
860 m->hwvol_mixer = dev;
864 snd_mtxunlock(m->lock);
869 mixer_hwvol_init(device_t dev)
874 pdev = mixer_get_devt(dev);
877 m->hwvol_mixer = SOUND_MIXER_VOLUME;
879 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
880 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
881 OID_AUTO, "hwvol_step", CTLFLAG_RW, &m->hwvol_step, 0, "");
882 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
883 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
884 OID_AUTO, "hwvol_mixer", CTLTYPE_STRING | CTLFLAG_RW, m, 0,
885 sysctl_hw_snd_hwvol_mixer, "A", "");
890 mixer_hwvol_mute(device_t dev)
895 pdev = mixer_get_devt(dev);
897 snd_mtxlock(m->lock);
898 if (m->hwvol_muted) {
900 mixer_set(m, m->hwvol_mixer, m->hwvol_mute_level);
903 m->hwvol_mute_level = mixer_get(m, m->hwvol_mixer);
904 mixer_set(m, m->hwvol_mixer, 0);
906 snd_mtxunlock(m->lock);
910 mixer_hwvol_step(device_t dev, int left_step, int right_step)
913 int level, left, right;
916 pdev = mixer_get_devt(dev);
918 snd_mtxlock(m->lock);
919 if (m->hwvol_muted) {
921 level = m->hwvol_mute_level;
923 level = mixer_get(m, m->hwvol_mixer);
927 left += left_step * m->hwvol_step;
930 right += right_step * m->hwvol_step;
933 mixer_set(m, m->hwvol_mixer, left | right << 8);
935 snd_mtxunlock(m->lock);
939 mixer_busy(struct snd_mixer *m)
941 KASSERT(m != NULL, ("NULL snd_mixer"));
947 mix_set(struct snd_mixer *m, u_int dev, u_int left, u_int right)
951 KASSERT(m != NULL, ("NULL snd_mixer"));
953 snd_mtxlock(m->lock);
954 ret = mixer_set(m, dev, left | (right << 8));
955 snd_mtxunlock(m->lock);
957 return ((ret != 0) ? ENXIO : 0);
961 mix_get(struct snd_mixer *m, u_int dev)
965 KASSERT(m != NULL, ("NULL snd_mixer"));
967 snd_mtxlock(m->lock);
968 ret = mixer_get(m, dev);
969 snd_mtxunlock(m->lock);
975 mix_setrecsrc(struct snd_mixer *m, u_int32_t src)
979 KASSERT(m != NULL, ("NULL snd_mixer"));
981 snd_mtxlock(m->lock);
982 ret = mixer_setrecsrc(m, src);
983 snd_mtxunlock(m->lock);
985 return ((ret != 0) ? ENXIO : 0);
989 mix_getrecsrc(struct snd_mixer *m)
993 KASSERT(m != NULL, ("NULL snd_mixer"));
995 snd_mtxlock(m->lock);
996 ret = mixer_getrecsrc(m);
997 snd_mtxunlock(m->lock);
1003 mix_get_type(struct snd_mixer *m)
1005 KASSERT(m != NULL, ("NULL snd_mixer"));
1010 /* ----------------------------------------------------------------------- */
1013 mixer_open(struct cdev *i_dev, int flags, int mode, struct thread *td)
1015 struct snddev_info *d;
1016 struct snd_mixer *m;
1019 if (i_dev == NULL || i_dev->si_drv1 == NULL)
1023 d = device_get_softc(m->dev);
1024 if (!PCM_REGISTERED(d))
1027 /* XXX Need Giant magic entry ??? */
1029 snd_mtxlock(m->lock);
1031 snd_mtxunlock(m->lock);
1037 mixer_close(struct cdev *i_dev, int flags, int mode, struct thread *td)
1039 struct snddev_info *d;
1040 struct snd_mixer *m;
1043 if (i_dev == NULL || i_dev->si_drv1 == NULL)
1047 d = device_get_softc(m->dev);
1048 if (!PCM_REGISTERED(d))
1051 /* XXX Need Giant magic entry ??? */
1053 snd_mtxlock(m->lock);
1054 ret = (m->busy == 0) ? EBADF : 0;
1056 snd_mtxunlock(m->lock);
1062 mixer_ioctl_channel(struct cdev *dev, u_long cmd, caddr_t arg, int mode,
1063 struct thread *td, int from)
1065 struct snddev_info *d;
1066 struct snd_mixer *m;
1067 struct pcm_channel *c, *rdch, *wrch;
1071 if (td == NULL || td->td_proc == NULL)
1075 d = device_get_softc(m->dev);
1079 case SOUND_MIXER_PCM:
1080 case SOUND_MIXER_RECLEV:
1081 case SOUND_MIXER_DEVMASK:
1082 case SOUND_MIXER_CAPS:
1083 case SOUND_MIXER_STEREODEVS:
1090 pid = td->td_proc->p_pid;
1097 * This is unfair. Imagine single proc opening multiple
1098 * instances of same direction. What we do right now
1099 * is looking for the first matching proc/pid, and just
1100 * that. Nothing more. Consider it done.
1102 * The better approach of controlling specific channel
1103 * pcm or rec volume is by doing mixer ioctl
1104 * (SNDCTL_DSP_[SET|GET][PLAY|REC]VOL / SOUND_MIXER_[PCM|RECLEV]
1105 * on its open fd, rather than cracky mixer bypassing here.
1107 CHN_FOREACH(c, d, channels.pcm.opened) {
1109 if (c->pid != pid ||
1110 !(c->feederflags & (1 << FEEDER_VOLUME))) {
1114 if (rdch == NULL && c->direction == PCMDIR_REC) {
1116 if (j == SOUND_MIXER_RECLEV)
1117 goto mixer_ioctl_channel_proc;
1118 } else if (wrch == NULL && c->direction == PCMDIR_PLAY) {
1120 if (j == SOUND_MIXER_PCM)
1121 goto mixer_ioctl_channel_proc;
1124 if (rdch != NULL && wrch != NULL)
1128 if (rdch == NULL && wrch == NULL)
1131 if ((j == SOUND_MIXER_DEVMASK || j == SOUND_MIXER_CAPS ||
1132 j == SOUND_MIXER_STEREODEVS) &&
1133 (cmd & MIXER_READ(0)) == MIXER_READ(0)) {
1134 snd_mtxlock(m->lock);
1135 *(int *)arg = mix_getdevs(m);
1136 snd_mtxunlock(m->lock);
1138 *(int *)arg |= SOUND_MASK_RECLEV;
1140 *(int *)arg |= SOUND_MASK_PCM;
1146 mixer_ioctl_channel_proc:
1148 KASSERT(c != NULL, ("%s(): NULL channel", __func__));
1151 if ((cmd & MIXER_WRITE(0)) == MIXER_WRITE(0)) {
1152 int left, right, center;
1154 left = *(int *)arg & 0x7f;
1155 right = (*(int *)arg >> 8) & 0x7f;
1156 center = (left + right) >> 1;
1157 chn_setvolume_multi(c, SND_VOL_C_PCM, left, right, center);
1158 } else if ((cmd & MIXER_READ(0)) == MIXER_READ(0)) {
1159 *(int *)arg = CHN_GETVOLUME(c, SND_VOL_C_PCM, SND_CHN_T_FL);
1161 CHN_GETVOLUME(c, SND_VOL_C_PCM, SND_CHN_T_FR) << 8;
1170 mixer_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode,
1173 struct snddev_info *d;
1176 if (i_dev == NULL || i_dev->si_drv1 == NULL)
1179 d = device_get_softc(((struct snd_mixer *)i_dev->si_drv1)->dev);
1180 if (!PCM_REGISTERED(d))
1184 PCM_ACQUIRE_QUICK(d);
1188 if (mixer_bypass != 0 && (d->flags & SD_F_VPC))
1189 ret = mixer_ioctl_channel(i_dev, cmd, arg, mode, td,
1193 ret = mixer_ioctl_cmd(i_dev, cmd, arg, mode, td,
1196 PCM_RELEASE_QUICK(d);
1203 * XXX Make sure you can guarantee concurrency safety before calling this
1204 * function, be it through Giant, PCM_*, etc !
1207 mixer_ioctl_cmd(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode,
1208 struct thread *td, int from)
1210 struct snd_mixer *m;
1211 int ret, *arg_i = (int *)arg;
1212 int v = -1, j = cmd & 0xff;
1215 * Certain ioctls may be made on any type of device (audio, mixer,
1216 * and MIDI). Handle those special cases here.
1218 if (IOCGROUP(cmd) == 'X') {
1220 case SNDCTL_SYSINFO:
1221 sound_oss_sysinfo((oss_sysinfo *)arg);
1223 case SNDCTL_CARDINFO:
1224 return (sound_oss_card_info((oss_card_info *)arg));
1225 case SNDCTL_AUDIOINFO:
1226 case SNDCTL_AUDIOINFO_EX:
1227 case SNDCTL_ENGINEINFO:
1228 return (dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg));
1229 case SNDCTL_MIXERINFO:
1230 return (mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg));
1240 snd_mtxlock(m->lock);
1241 if (from == MIXER_CMD_CDEV && !m->busy) {
1242 snd_mtxunlock(m->lock);
1246 if ((cmd & MIXER_WRITE(0)) == MIXER_WRITE(0)) {
1247 if (j == SOUND_MIXER_RECSRC)
1248 ret = mixer_setrecsrc(m, *arg_i);
1250 ret = mixer_set(m, j, *arg_i);
1251 snd_mtxunlock(m->lock);
1252 return ((ret == 0) ? 0 : ENXIO);
1255 if ((cmd & MIXER_READ(0)) == MIXER_READ(0)) {
1257 case SOUND_MIXER_DEVMASK:
1258 case SOUND_MIXER_CAPS:
1259 case SOUND_MIXER_STEREODEVS:
1263 case SOUND_MIXER_RECMASK:
1264 v = mix_getrecdevs(m);
1267 case SOUND_MIXER_RECSRC:
1268 v = mixer_getrecsrc(m);
1272 v = mixer_get(m, j);
1275 snd_mtxunlock(m->lock);
1276 return ((v != -1) ? 0 : ENXIO);
1282 case SNDCTL_DSP_GET_RECSRC_NAMES:
1283 bcopy((void *)&m->enuminfo, arg, sizeof(oss_mixer_enuminfo));
1285 case SNDCTL_DSP_GET_RECSRC:
1286 ret = mixer_get_recroute(m, arg_i);
1288 case SNDCTL_DSP_SET_RECSRC:
1289 ret = mixer_set_recroute(m, *arg_i);
1291 case OSS_GETVERSION:
1292 *arg_i = SOUND_VERSION;
1299 snd_mtxunlock(m->lock);
1305 mixer_clone(void *arg,
1306 #if __FreeBSD_version >= 600034
1309 char *name, int namelen, struct cdev **dev)
1311 struct snddev_info *d;
1315 if (strcmp(name, "mixer") == 0) {
1316 d = devclass_get_softc(pcm_devclass, snd_unit);
1317 if (PCM_REGISTERED(d) && d->mixer_dev != NULL) {
1318 *dev = d->mixer_dev;
1325 mixer_sysinit(void *p)
1327 if (mixer_ehtag != NULL)
1329 mixer_ehtag = EVENTHANDLER_REGISTER(dev_clone, mixer_clone, 0, 1000);
1333 mixer_sysuninit(void *p)
1335 if (mixer_ehtag == NULL)
1337 EVENTHANDLER_DEREGISTER(dev_clone, mixer_ehtag);
1341 SYSINIT(mixer_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, mixer_sysinit, NULL);
1342 SYSUNINIT(mixer_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, mixer_sysuninit, NULL);
1345 * @brief Handler for SNDCTL_MIXERINFO
1347 * This function searches for a mixer based on the numeric ID stored
1348 * in oss_miserinfo::dev. If set to -1, then information about the
1349 * current mixer handling the request is provided. Note, however, that
1350 * this ioctl may be made with any sound device (audio, mixer, midi).
1352 * @note Caller must not hold any PCM device, channel, or mixer locks.
1354 * See http://manuals.opensound.com/developer/SNDCTL_MIXERINFO.html for
1357 * @param i_dev character device on which the ioctl arrived
1358 * @param arg user argument (oss_mixerinfo *)
1360 * @retval EINVAL oss_mixerinfo::dev specified a bad value
1364 mixer_oss_mixerinfo(struct cdev *i_dev, oss_mixerinfo *mi)
1366 struct snddev_info *d;
1367 struct snd_mixer *m;
1371 * If probing the device handling the ioctl, make sure it's a mixer
1372 * device. (This ioctl is valid on audio, mixer, and midi devices.)
1374 if (mi->dev == -1 && i_dev->si_devsw != &mixer_cdevsw)
1382 * There's a 1:1 relationship between mixers and PCM devices, so
1383 * begin by iterating over PCM devices and search for our mixer.
1385 for (i = 0; pcm_devclass != NULL &&
1386 i < devclass_get_maxunit(pcm_devclass); i++) {
1387 d = devclass_get_softc(pcm_devclass, i);
1388 if (!PCM_REGISTERED(d))
1391 /* XXX Need Giant magic entry */
1393 /* See the note in function docblock. */
1394 PCM_UNLOCKASSERT(d);
1397 if (d->mixer_dev != NULL && d->mixer_dev->si_drv1 != NULL &&
1398 ((mi->dev == -1 && d->mixer_dev == i_dev) ||
1400 m = d->mixer_dev->si_drv1;
1404 * At this point, the following synchronization stuff
1406 * - a specific PCM device is locked.
1407 * - a specific mixer device has been locked, so be
1408 * sure to unlock when existing.
1410 bzero((void *)mi, sizeof(*mi));
1412 snprintf(mi->id, sizeof(mi->id), "mixer%d", i);
1413 strlcpy(mi->name, m->name, sizeof(mi->name));
1414 mi->modify_counter = m->modify_counter;
1415 mi->card_number = i;
1417 * Currently, FreeBSD assumes 1:1 relationship between
1418 * a pcm and mixer devices, so this is hardcoded to 0.
1420 mi->port_number = 0;
1423 * @todo Fill in @sa oss_mixerinfo::mixerhandle.
1424 * @note From 4Front: "mixerhandle is an arbitrary
1425 * string that identifies the mixer better than
1426 * the device number (mixerinfo.dev). Device
1427 * numbers may change depending on the order the
1428 * drivers are loaded. However the handle should
1429 * remain the same provided that the sound card
1430 * is not moved to another PCI slot."
1435 * @sa oss_mixerinfo::magic is a reserved field.
1438 * From 4Front: "magic is usually 0. However some
1439 * devices may have dedicated setup utilities and the
1440 * magic field may contain an unique driver specific
1441 * value (managed by [4Front])."
1444 mi->enabled = device_is_attached(m->dev) ? 1 : 0;
1446 * The only flag for @sa oss_mixerinfo::caps is
1447 * currently MIXER_CAP_VIRTUAL, which I'm not sure we
1448 * really worry about.
1451 * Mixer extensions currently aren't supported, so
1452 * leave @sa oss_mixerinfo::nrext blank for now.
1455 * @todo Fill in @sa oss_mixerinfo::priority (requires
1456 * touching drivers?)
1457 * @note The priority field is for mixer applets to
1458 * determine which mixer should be the default, with 0
1459 * being least preferred and 10 being most preferred.
1460 * From 4Front: "OSS drivers like ICH use higher
1461 * values (10) because such chips are known to be used
1462 * only on motherboards. Drivers for high end pro
1463 * devices use 0 because they will never be the
1464 * default mixer. Other devices use values 1 to 9
1465 * depending on the estimated probability of being the
1468 * XXX Described by Hannu@4Front, but not found in
1470 strlcpy(mi->devnode, d->mixer_dev->si_name,
1471 sizeof(mi->devnode));
1472 mi->legacy_device = i;
1474 mtx_unlock(m->lock);
1488 * Allow the sound driver to use the mixer lock to protect its mixer
1492 mixer_get_lock(struct snd_mixer *m)
1494 if (m->lock == NULL) {