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linux/sound/core/oss/mixer_oss.c
Arjan van de Ven 9c2e08c592 [PATCH] mark struct file_operations const 9 
Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:46 -08:00

1359 lines
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/*
* OSS emulation layer for the mixer interface
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <sound/driver.h>
#include <linux/init.h>
#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/string.h>
#include <sound/core.h>
#include <sound/minors.h>
#include <sound/control.h>
#include <sound/info.h>
#include <sound/mixer_oss.h>
#include <linux/soundcard.h>
#define OSS_ALSAEMULVER _SIOR ('M', 249, int)
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
MODULE_LICENSE("GPL");
MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
static int snd_mixer_oss_open(struct inode *inode, struct file *file)
{
struct snd_card *card;
struct snd_mixer_oss_file *fmixer;
int err;
card = snd_lookup_oss_minor_data(iminor(inode),
SNDRV_OSS_DEVICE_TYPE_MIXER);
if (card == NULL)
return -ENODEV;
if (card->mixer_oss == NULL)
return -ENODEV;
err = snd_card_file_add(card, file);
if (err < 0)
return err;
fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
if (fmixer == NULL) {
snd_card_file_remove(card, file);
return -ENOMEM;
}
fmixer->card = card;
fmixer->mixer = card->mixer_oss;
file->private_data = fmixer;
if (!try_module_get(card->module)) {
kfree(fmixer);
snd_card_file_remove(card, file);
return -EFAULT;
}
return 0;
}
static int snd_mixer_oss_release(struct inode *inode, struct file *file)
{
struct snd_mixer_oss_file *fmixer;
if (file->private_data) {
fmixer = (struct snd_mixer_oss_file *) file->private_data;
module_put(fmixer->card->module);
snd_card_file_remove(fmixer->card, file);
kfree(fmixer);
}
return 0;
}
static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
mixer_info __user *_info)
{
struct snd_card *card = fmixer->card;
struct snd_mixer_oss *mixer = fmixer->mixer;
struct mixer_info info;
memset(&info, 0, sizeof(info));
strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
info.modify_counter = card->mixer_oss_change_count;
if (copy_to_user(_info, &info, sizeof(info)))
return -EFAULT;
return 0;
}
static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
_old_mixer_info __user *_info)
{
struct snd_card *card = fmixer->card;
struct snd_mixer_oss *mixer = fmixer->mixer;
_old_mixer_info info;
memset(&info, 0, sizeof(info));
strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
if (copy_to_user(_info, &info, sizeof(info)))
return -EFAULT;
return 0;
}
static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
{
struct snd_mixer_oss *mixer = fmixer->mixer;
int result = 0;
if (mixer == NULL)
return -EIO;
if (mixer->get_recsrc && mixer->put_recsrc)
result |= SOUND_CAP_EXCL_INPUT;
return result;
}
static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
{
struct snd_mixer_oss *mixer = fmixer->mixer;
struct snd_mixer_oss_slot *pslot;
int result = 0, chn;
if (mixer == NULL)
return -EIO;
for (chn = 0; chn < 31; chn++) {
pslot = &mixer->slots[chn];
if (pslot->put_volume || pslot->put_recsrc)
result |= 1 << chn;
}
return result;
}
static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
{
struct snd_mixer_oss *mixer = fmixer->mixer;
struct snd_mixer_oss_slot *pslot;
int result = 0, chn;
if (mixer == NULL)
return -EIO;
for (chn = 0; chn < 31; chn++) {
pslot = &mixer->slots[chn];
if (pslot->put_volume && pslot->stereo)
result |= 1 << chn;
}
return result;
}
static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
{
struct snd_mixer_oss *mixer = fmixer->mixer;
int result = 0;
if (mixer == NULL)
return -EIO;
if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
result = mixer->mask_recsrc;
} else {
struct snd_mixer_oss_slot *pslot;
int chn;
for (chn = 0; chn < 31; chn++) {
pslot = &mixer->slots[chn];
if (pslot->put_recsrc)
result |= 1 << chn;
}
}
return result;
}
static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
{
struct snd_mixer_oss *mixer = fmixer->mixer;
int result = 0;
if (mixer == NULL)
return -EIO;
if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
int err;
if ((err = mixer->get_recsrc(fmixer, &result)) < 0)
return err;
result = 1 << result;
} else {
struct snd_mixer_oss_slot *pslot;
int chn;
for (chn = 0; chn < 31; chn++) {
pslot = &mixer->slots[chn];
if (pslot->get_recsrc) {
int active = 0;
pslot->get_recsrc(fmixer, pslot, &active);
if (active)
result |= 1 << chn;
}
}
}
return mixer->oss_recsrc = result;
}
static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
{
struct snd_mixer_oss *mixer = fmixer->mixer;
struct snd_mixer_oss_slot *pslot;
int chn, active;
int result = 0;
if (mixer == NULL)
return -EIO;
if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
if (recsrc & ~mixer->oss_recsrc)
recsrc &= ~mixer->oss_recsrc;
mixer->put_recsrc(fmixer, ffz(~recsrc));
mixer->get_recsrc(fmixer, &result);
result = 1 << result;
}
for (chn = 0; chn < 31; chn++) {
pslot = &mixer->slots[chn];
if (pslot->put_recsrc) {
active = (recsrc & (1 << chn)) ? 1 : 0;
pslot->put_recsrc(fmixer, pslot, active);
}
}
if (! result) {
for (chn = 0; chn < 31; chn++) {
pslot = &mixer->slots[chn];
if (pslot->get_recsrc) {
active = 0;
pslot->get_recsrc(fmixer, pslot, &active);
if (active)
result |= 1 << chn;
}
}
}
return result;
}
static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
{
struct snd_mixer_oss *mixer = fmixer->mixer;
struct snd_mixer_oss_slot *pslot;
int result = 0, left, right;
if (mixer == NULL || slot > 30)
return -EIO;
pslot = &mixer->slots[slot];
left = pslot->volume[0];
right = pslot->volume[1];
if (pslot->get_volume)
result = pslot->get_volume(fmixer, pslot, &left, &right);
if (!pslot->stereo)
right = left;
snd_assert(left >= 0 && left <= 100, return -EIO);
snd_assert(right >= 0 && right <= 100, return -EIO);
if (result >= 0) {
pslot->volume[0] = left;
pslot->volume[1] = right;
result = (left & 0xff) | ((right & 0xff) << 8);
}
return result;
}
static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
int slot, int volume)
{
struct snd_mixer_oss *mixer = fmixer->mixer;
struct snd_mixer_oss_slot *pslot;
int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
if (mixer == NULL || slot > 30)
return -EIO;
pslot = &mixer->slots[slot];
if (left > 100)
left = 100;
if (right > 100)
right = 100;
if (!pslot->stereo)
right = left;
if (pslot->put_volume)
result = pslot->put_volume(fmixer, pslot, left, right);
if (result < 0)
return result;
pslot->volume[0] = left;
pslot->volume[1] = right;
return (left & 0xff) | ((right & 0xff) << 8);
}
static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int tmp;
snd_assert(fmixer != NULL, return -ENXIO);
if (((cmd >> 8) & 0xff) == 'M') {
switch (cmd) {
case SOUND_MIXER_INFO:
return snd_mixer_oss_info(fmixer, argp);
case SOUND_OLD_MIXER_INFO:
return snd_mixer_oss_info_obsolete(fmixer, argp);
case SOUND_MIXER_WRITE_RECSRC:
if (get_user(tmp, p))
return -EFAULT;
tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
if (tmp < 0)
return tmp;
return put_user(tmp, p);
case OSS_GETVERSION:
return put_user(SNDRV_OSS_VERSION, p);
case OSS_ALSAEMULVER:
return put_user(1, p);
case SOUND_MIXER_READ_DEVMASK:
tmp = snd_mixer_oss_devmask(fmixer);
if (tmp < 0)
return tmp;
return put_user(tmp, p);
case SOUND_MIXER_READ_STEREODEVS:
tmp = snd_mixer_oss_stereodevs(fmixer);
if (tmp < 0)
return tmp;
return put_user(tmp, p);
case SOUND_MIXER_READ_RECMASK:
tmp = snd_mixer_oss_recmask(fmixer);
if (tmp < 0)
return tmp;
return put_user(tmp, p);
case SOUND_MIXER_READ_CAPS:
tmp = snd_mixer_oss_caps(fmixer);
if (tmp < 0)
return tmp;
return put_user(tmp, p);
case SOUND_MIXER_READ_RECSRC:
tmp = snd_mixer_oss_get_recsrc(fmixer);
if (tmp < 0)
return tmp;
return put_user(tmp, p);
}
}
if (cmd & SIOC_IN) {
if (get_user(tmp, p))
return -EFAULT;
tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
if (tmp < 0)
return tmp;
return put_user(tmp, p);
} else if (cmd & SIOC_OUT) {
tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
if (tmp < 0)
return tmp;
return put_user(tmp, p);
}
return -ENXIO;
}
static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg);
}
int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
{
struct snd_mixer_oss_file fmixer;
snd_assert(card != NULL, return -ENXIO);
if (card->mixer_oss == NULL)
return -ENXIO;
memset(&fmixer, 0, sizeof(fmixer));
fmixer.card = card;
fmixer.mixer = card->mixer_oss;
return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
}
#ifdef CONFIG_COMPAT
/* all compatible */
#define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl
#else
#define snd_mixer_oss_ioctl_compat NULL
#endif
/*
* REGISTRATION PART
*/
static const struct file_operations snd_mixer_oss_f_ops =
{
.owner = THIS_MODULE,
.open = snd_mixer_oss_open,
.release = snd_mixer_oss_release,
.unlocked_ioctl = snd_mixer_oss_ioctl,
.compat_ioctl = snd_mixer_oss_ioctl_compat,
};
/*
* utilities
*/
static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
{
long orange = omax - omin, nrange = nmax - nmin;
if (orange == 0)
return 0;
return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
}
/* convert from alsa native to oss values (0-100) */
static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
{
if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
return *old;
return snd_mixer_oss_conv(val, min, max, 0, 100);
}
/* convert from oss to alsa native values */
static long snd_mixer_oss_conv2(long val, long min, long max)
{
return snd_mixer_oss_conv(val, 0, 100, min, max);
}
#if 0
static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
{
struct snd_mixer_oss *mixer = card->mixer_oss;
if (mixer)
mixer->mask_recsrc |= 1 << slot;
}
static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
{
struct snd_mixer_oss *mixer = card->mixer_oss;
if (mixer && (mixer->mask_recsrc & (1 << slot)))
return 1;
return 0;
}
#endif
#define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
#define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
#define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
#define SNDRV_MIXER_OSS_ITEM_GROUTE 2
#define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
#define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
#define SNDRV_MIXER_OSS_ITEM_PROUTE 5
#define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
#define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
#define SNDRV_MIXER_OSS_ITEM_CROUTE 8
#define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
#define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
#define SNDRV_MIXER_OSS_ITEM_COUNT 11
#define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
#define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
#define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
#define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
#define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
#define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
#define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
#define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
#define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
#define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
#define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
struct slot {
unsigned int signature;
unsigned int present;
unsigned int channels;
unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
unsigned int capture_item;
struct snd_mixer_oss_assign_table *assigned;
unsigned int allocated: 1;
};
#define ID_UNKNOWN ((unsigned int)-1)
static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
{
struct snd_card *card = mixer->card;
struct snd_ctl_elem_id id;
memset(&id, 0, sizeof(id));
id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
strcpy(id.name, name);
id.index = index;
return snd_ctl_find_id(card, &id);
}
static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
struct snd_mixer_oss_slot *pslot,
unsigned int numid,
int *left, int *right)
{
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
struct snd_kcontrol *kctl;
struct snd_card *card = fmixer->card;
if (numid == ID_UNKNOWN)
return;
down_read(&card->controls_rwsem);
if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
up_read(&card->controls_rwsem);
return;
}
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL)
goto __unalloc;
if (kctl->info(kctl, uinfo))
goto __unalloc;
if (kctl->get(kctl, uctl))
goto __unalloc;
if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
goto __unalloc;
*left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
if (uinfo->count > 1)
*right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
__unalloc:
up_read(&card->controls_rwsem);
kfree(uctl);
kfree(uinfo);
}
static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
struct snd_mixer_oss_slot *pslot,
unsigned int numid,
int *left, int *right,
int route)
{
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
struct snd_kcontrol *kctl;
struct snd_card *card = fmixer->card;
if (numid == ID_UNKNOWN)
return;
down_read(&card->controls_rwsem);
if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
up_read(&card->controls_rwsem);
return;
}
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL)
goto __unalloc;
if (kctl->info(kctl, uinfo))
goto __unalloc;
if (kctl->get(kctl, uctl))
goto __unalloc;
if (!uctl->value.integer.value[0]) {
*left = 0;
if (uinfo->count == 1)
*right = 0;
}
if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
*right = 0;
__unalloc:
up_read(&card->controls_rwsem);
kfree(uctl);
kfree(uinfo);
}
static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
struct snd_mixer_oss_slot *pslot,
int *left, int *right)
{
struct slot *slot = (struct slot *)pslot->private_data;
*left = *right = 100;
if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
}
if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
}
return 0;
}
static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
struct snd_mixer_oss_slot *pslot,
unsigned int numid,
int left, int right)
{
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
struct snd_kcontrol *kctl;
struct snd_card *card = fmixer->card;
int res;
if (numid == ID_UNKNOWN)
return;
down_read(&card->controls_rwsem);
if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
return;
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL)
goto __unalloc;
if (kctl->info(kctl, uinfo))
goto __unalloc;
if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
goto __unalloc;
uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
if (uinfo->count > 1)
uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
if ((res = kctl->put(kctl, uctl)) < 0)
goto __unalloc;
if (res > 0)
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
__unalloc:
up_read(&card->controls_rwsem);
kfree(uctl);
kfree(uinfo);
}
static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
struct snd_mixer_oss_slot *pslot,
unsigned int numid,
int left, int right,
int route)
{
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
struct snd_kcontrol *kctl;
struct snd_card *card = fmixer->card;
int res;
if (numid == ID_UNKNOWN)
return;
down_read(&card->controls_rwsem);
if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
up_read(&fmixer->card->controls_rwsem);
return;
}
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL)
goto __unalloc;
if (kctl->info(kctl, uinfo))
goto __unalloc;
if (uinfo->count > 1) {
uctl->value.integer.value[0] = left > 0 ? 1 : 0;
uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
if (route) {
uctl->value.integer.value[1] =
uctl->value.integer.value[2] = 0;
}
} else {
uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
}
if ((res = kctl->put(kctl, uctl)) < 0)
goto __unalloc;
if (res > 0)
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
__unalloc:
up_read(&card->controls_rwsem);
kfree(uctl);
kfree(uinfo);
}
static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
struct snd_mixer_oss_slot *pslot,
int left, int right)
{
struct slot *slot = (struct slot *)pslot->private_data;
if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
}
if (left || right) {
if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
} else {
if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
}
}
return 0;
}
static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
struct snd_mixer_oss_slot *pslot,
int *active)
{
struct slot *slot = (struct slot *)pslot->private_data;
int left, right;
left = right = 1;
snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
*active = (left || right) ? 1 : 0;
return 0;
}
static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
struct snd_mixer_oss_slot *pslot,
int *active)
{
struct slot *slot = (struct slot *)pslot->private_data;
int left, right;
left = right = 1;
snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
*active = (left || right) ? 1 : 0;
return 0;
}
static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
struct snd_mixer_oss_slot *pslot,
int active)
{
struct slot *slot = (struct slot *)pslot->private_data;
snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
return 0;
}
static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
struct snd_mixer_oss_slot *pslot,
int active)
{
struct slot *slot = (struct slot *)pslot->private_data;
snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
return 0;
}
static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
{
struct snd_card *card = fmixer->card;
struct snd_mixer_oss *mixer = fmixer->mixer;
struct snd_kcontrol *kctl;
struct snd_mixer_oss_slot *pslot;
struct slot *slot;
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
int err, idx;
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL) {
err = -ENOMEM;
goto __unlock;
}
down_read(&card->controls_rwsem);
kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
if (! kctl) {
err = -ENOENT;
goto __unlock;
}
if ((err = kctl->info(kctl, uinfo)) < 0)
goto __unlock;
if ((err = kctl->get(kctl, uctl)) < 0)
goto __unlock;
for (idx = 0; idx < 32; idx++) {
if (!(mixer->mask_recsrc & (1 << idx)))
continue;
pslot = &mixer->slots[idx];
slot = (struct slot *)pslot->private_data;
if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
continue;
if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
continue;
if (slot->capture_item == uctl->value.enumerated.item[0]) {
*active_index = idx;
break;
}
}
err = 0;
__unlock:
up_read(&card->controls_rwsem);
kfree(uctl);
kfree(uinfo);
return err;
}
static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
{
struct snd_card *card = fmixer->card;
struct snd_mixer_oss *mixer = fmixer->mixer;
struct snd_kcontrol *kctl;
struct snd_mixer_oss_slot *pslot;
struct slot *slot = NULL;
struct snd_ctl_elem_info *uinfo;
struct snd_ctl_elem_value *uctl;
int err;
unsigned int idx;
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (uinfo == NULL || uctl == NULL) {
err = -ENOMEM;
goto __unlock;
}
down_read(&card->controls_rwsem);
kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
if (! kctl) {
err = -ENOENT;
goto __unlock;
}
if ((err = kctl->info(kctl, uinfo)) < 0)
goto __unlock;
for (idx = 0; idx < 32; idx++) {
if (!(mixer->mask_recsrc & (1 << idx)))
continue;
pslot = &mixer->slots[idx];
slot = (struct slot *)pslot->private_data;
if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
continue;
if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
continue;
if (idx == active_index)
break;
slot = NULL;
}
if (! slot)
goto __unlock;
for (idx = 0; idx < uinfo->count; idx++)
uctl->value.enumerated.item[idx] = slot->capture_item;
err = kctl->put(kctl, uctl);
if (err > 0)
snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
err = 0;
__unlock:
up_read(&card->controls_rwsem);
kfree(uctl);
kfree(uinfo);
return err;
}
struct snd_mixer_oss_assign_table {
int oss_id;
const char *name;
int index;
};
static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
{
struct snd_ctl_elem_info *info;
struct snd_kcontrol *kcontrol;
struct snd_card *card = mixer->card;
int err;
down_read(&card->controls_rwsem);
kcontrol = snd_mixer_oss_test_id(mixer, name, index);
if (kcontrol == NULL) {
up_read(&card->controls_rwsem);
return 0;
}
info = kmalloc(sizeof(*info), GFP_KERNEL);
if (! info) {
up_read(&card->controls_rwsem);
return -ENOMEM;
}
if ((err = kcontrol->info(kcontrol, info)) < 0) {
up_read(&card->controls_rwsem);
kfree(info);
return err;
}
slot->numid[item] = kcontrol->id.numid;
up_read(&card->controls_rwsem);
if (info->count > slot->channels)
slot->channels = info->count;
slot->present |= 1 << item;
kfree(info);
return 0;
}
static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
{
struct slot *p = (struct slot *)chn->private_data;
if (p) {
if (p->allocated && p->assigned) {
kfree(p->assigned->name);
kfree(p->assigned);
}
kfree(p);
}
}
static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
{
int idx = rslot->number; /* remember this */
if (rslot->private_free)
rslot->private_free(rslot);
memset(rslot, 0, sizeof(*rslot));
rslot->number = idx;
}
/*
* build an OSS mixer element.
* ptr_allocated means the entry is dynamically allocated (change via proc file).
* when replace_old = 1, the old entry is replaced with the new one.
*/
static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
{
struct slot slot;
struct slot *pslot;
struct snd_kcontrol *kctl;
struct snd_mixer_oss_slot *rslot;
char str[64];
/* check if already assigned */
if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
return 0;
memset(&slot, 0, sizeof(slot));
memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
SNDRV_MIXER_OSS_ITEM_GLOBAL))
return 0;
sprintf(str, "%s Switch", ptr->name);
if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
SNDRV_MIXER_OSS_ITEM_GSWITCH))
return 0;
sprintf(str, "%s Route", ptr->name);
if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
SNDRV_MIXER_OSS_ITEM_GROUTE))
return 0;
sprintf(str, "%s Volume", ptr->name);
if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
SNDRV_MIXER_OSS_ITEM_GVOLUME))
return 0;
sprintf(str, "%s Playback Switch", ptr->name);
if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
SNDRV_MIXER_OSS_ITEM_PSWITCH))
return 0;
sprintf(str, "%s Playback Route", ptr->name);
if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
SNDRV_MIXER_OSS_ITEM_PROUTE))
return 0;
sprintf(str, "%s Playback Volume", ptr->name);
if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
SNDRV_MIXER_OSS_ITEM_PVOLUME))
return 0;
sprintf(str, "%s Capture Switch", ptr->name);
if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
SNDRV_MIXER_OSS_ITEM_CSWITCH))
return 0;
sprintf(str, "%s Capture Route", ptr->name);
if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
SNDRV_MIXER_OSS_ITEM_CROUTE))
return 0;
sprintf(str, "%s Capture Volume", ptr->name);
if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
SNDRV_MIXER_OSS_ITEM_CVOLUME))
return 0;
down_read(&mixer->card->controls_rwsem);
if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
struct snd_ctl_elem_info *uinfo;
uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
if (! uinfo) {
up_read(&mixer->card->controls_rwsem);
return -ENOMEM;
}
if (kctl->info(kctl, uinfo)) {
up_read(&mixer->card->controls_rwsem);
return 0;
}
strcpy(str, ptr->name);
if (!strcmp(str, "Master"))
strcpy(str, "Mix");
if (!strcmp(str, "Master Mono"))
strcpy(str, "Mix Mono");
slot.capture_item = 0;
if (!strcmp(uinfo->value.enumerated.name, str)) {
slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
} else {
for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
uinfo->value.enumerated.item = slot.capture_item;
if (kctl->info(kctl, uinfo)) {
up_read(&mixer->card->controls_rwsem);
return 0;
}
if (!strcmp(uinfo->value.enumerated.name, str)) {
slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
break;
}
}
}
kfree(uinfo);
}
up_read(&mixer->card->controls_rwsem);
if (slot.present != 0) {
pslot = kmalloc(sizeof(slot), GFP_KERNEL);
if (! pslot)
return -ENOMEM;
*pslot = slot;
pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
pslot->assigned = ptr;
pslot->allocated = ptr_allocated;
rslot = &mixer->slots[ptr->oss_id];
mixer_slot_clear(rslot);
rslot->stereo = slot.channels > 1 ? 1 : 0;
rslot->get_volume = snd_mixer_oss_get_volume1;
rslot->put_volume = snd_mixer_oss_put_volume1;
/* note: ES18xx have both Capture Source and XX Capture Volume !!! */
if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
} else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
} else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
mixer->mask_recsrc |= 1 << ptr->oss_id;
}
rslot->private_data = pslot;
rslot->private_free = snd_mixer_oss_slot_free;
return 1;
}
return 0;
}
#ifdef CONFIG_PROC_FS
/*
*/
#define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
MIXER_VOL(VOLUME),
MIXER_VOL(BASS),
MIXER_VOL(TREBLE),
MIXER_VOL(SYNTH),
MIXER_VOL(PCM),
MIXER_VOL(SPEAKER),
MIXER_VOL(LINE),
MIXER_VOL(MIC),
MIXER_VOL(CD),
MIXER_VOL(IMIX),
MIXER_VOL(ALTPCM),
MIXER_VOL(RECLEV),
MIXER_VOL(IGAIN),
MIXER_VOL(OGAIN),
MIXER_VOL(LINE1),
MIXER_VOL(LINE2),
MIXER_VOL(LINE3),
MIXER_VOL(DIGITAL1),
MIXER_VOL(DIGITAL2),
MIXER_VOL(DIGITAL3),
MIXER_VOL(PHONEIN),
MIXER_VOL(PHONEOUT),
MIXER_VOL(VIDEO),
MIXER_VOL(RADIO),
MIXER_VOL(MONITOR),
};
/*
* /proc interface
*/
static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
struct snd_mixer_oss *mixer = entry->private_data;
int i;
mutex_lock(&mixer->reg_mutex);
for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
struct slot *p;
if (! oss_mixer_names[i])
continue;
p = (struct slot *)mixer->slots[i].private_data;
snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
if (p && p->assigned)
snd_iprintf(buffer, "\"%s\" %d\n",
p->assigned->name,
p->assigned->index);
else
snd_iprintf(buffer, "\"\" 0\n");
}
mutex_unlock(&mixer->reg_mutex);
}
static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
struct snd_mixer_oss *mixer = entry->private_data;
char line[128], str[32], idxstr[16], *cptr;
int ch, idx;
struct snd_mixer_oss_assign_table *tbl;
struct slot *slot;
while (!snd_info_get_line(buffer, line, sizeof(line))) {
cptr = snd_info_get_str(str, line, sizeof(str));
for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
break;
if (ch >= SNDRV_OSS_MAX_MIXERS) {
snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
continue;
}
cptr = snd_info_get_str(str, cptr, sizeof(str));
if (! *str) {
/* remove the entry */
mutex_lock(&mixer->reg_mutex);
mixer_slot_clear(&mixer->slots[ch]);
mutex_unlock(&mixer->reg_mutex);
continue;
}
snd_info_get_str(idxstr, cptr, sizeof(idxstr));
idx = simple_strtoul(idxstr, NULL, 10);
if (idx >= 0x4000) { /* too big */
snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
continue;
}
mutex_lock(&mixer->reg_mutex);
slot = (struct slot *)mixer->slots[ch].private_data;
if (slot && slot->assigned &&
slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
/* not changed */
goto __unlock;
tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
if (! tbl) {
snd_printk(KERN_ERR "mixer_oss: no memory\n");
goto __unlock;
}
tbl->oss_id = ch;
tbl->name = kstrdup(str, GFP_KERNEL);
if (! tbl->name) {
kfree(tbl);
goto __unlock;
}
tbl->index = idx;
if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
kfree(tbl->name);
kfree(tbl);
}
__unlock:
mutex_unlock(&mixer->reg_mutex);
}
}
static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
{
struct snd_info_entry *entry;
entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
mixer->card->proc_root);
if (! entry)
return;
entry->content = SNDRV_INFO_CONTENT_TEXT;
entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
entry->c.text.read = snd_mixer_oss_proc_read;
entry->c.text.write = snd_mixer_oss_proc_write;
entry->private_data = mixer;
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
entry = NULL;
}
mixer->proc_entry = entry;
}
static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
{
snd_info_free_entry(mixer->proc_entry);
mixer->proc_entry = NULL;
}
#else /* !CONFIG_PROC_FS */
#define snd_mixer_oss_proc_init(mix)
#define snd_mixer_oss_proc_done(mix)
#endif /* CONFIG_PROC_FS */
static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
{
static struct snd_mixer_oss_assign_table table[] = {
{ SOUND_MIXER_VOLUME, "Master", 0 },
{ SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
{ SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
{ SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
{ SOUND_MIXER_SYNTH, "Synth", 0 },
{ SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
{ SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
{ SOUND_MIXER_PCM, "PCM", 0 },
{ SOUND_MIXER_SPEAKER, "PC Speaker", 0 },
{ SOUND_MIXER_LINE, "Line", 0 },
{ SOUND_MIXER_MIC, "Mic", 0 },
{ SOUND_MIXER_CD, "CD", 0 },
{ SOUND_MIXER_IMIX, "Monitor Mix", 0 },
{ SOUND_MIXER_ALTPCM, "PCM", 1 },
{ SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
{ SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
{ SOUND_MIXER_RECLEV, "-- nothing --", 0 },
{ SOUND_MIXER_IGAIN, "Capture", 0 },
{ SOUND_MIXER_OGAIN, "Playback", 0 },
{ SOUND_MIXER_LINE1, "Aux", 0 },
{ SOUND_MIXER_LINE2, "Aux", 1 },
{ SOUND_MIXER_LINE3, "Aux", 2 },
{ SOUND_MIXER_DIGITAL1, "Digital", 0 },
{ SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
{ SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
{ SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
{ SOUND_MIXER_DIGITAL2, "Digital", 1 },
{ SOUND_MIXER_DIGITAL3, "Digital", 2 },
{ SOUND_MIXER_PHONEIN, "Phone", 0 },
{ SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
{ SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
{ SOUND_MIXER_VIDEO, "Video", 0 },
{ SOUND_MIXER_RADIO, "Radio", 0 },
{ SOUND_MIXER_MONITOR, "Monitor", 0 }
};
unsigned int idx;
for (idx = 0; idx < ARRAY_SIZE(table); idx++)
snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
if (mixer->mask_recsrc) {
mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
}
}
/*
*
*/
static int snd_mixer_oss_free1(void *private)
{
struct snd_mixer_oss *mixer = private;
struct snd_card *card;
int idx;
snd_assert(mixer != NULL, return -ENXIO);
card = mixer->card;
snd_assert(mixer == card->mixer_oss, return -ENXIO);
card->mixer_oss = NULL;
for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
if (chn->private_free)
chn->private_free(chn);
}
kfree(mixer);
return 0;
}
static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
{
struct snd_mixer_oss *mixer;
if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
char name[128];
int idx, err;
mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
if (mixer == NULL)
return -ENOMEM;
mutex_init(&mixer->reg_mutex);
sprintf(name, "mixer%i%i", card->number, 0);
if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
card, 0,
&snd_mixer_oss_f_ops, card,
name)) < 0) {
snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
card->number, 0);
kfree(mixer);
return err;
}
mixer->oss_dev_alloc = 1;
mixer->card = card;
if (*card->mixername)
strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
else
strlcpy(mixer->name, name, sizeof(mixer->name));
#ifdef SNDRV_OSS_INFO_DEV_MIXERS
snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
card->number,
mixer->name);
#endif
for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
mixer->slots[idx].number = idx;
card->mixer_oss = mixer;
snd_mixer_oss_build(mixer);
snd_mixer_oss_proc_init(mixer);
} else {
mixer = card->mixer_oss;
if (mixer == NULL)
return 0;
if (mixer->oss_dev_alloc) {
#ifdef SNDRV_OSS_INFO_DEV_MIXERS
snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
#endif
snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
mixer->oss_dev_alloc = 0;
}
if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
return 0;
snd_mixer_oss_proc_done(mixer);
return snd_mixer_oss_free1(mixer);
}
return 0;
}
static int __init alsa_mixer_oss_init(void)
{
int idx;
snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
for (idx = 0; idx < SNDRV_CARDS; idx++) {
if (snd_cards[idx])
snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
}
return 0;
}
static void __exit alsa_mixer_oss_exit(void)
{
int idx;
snd_mixer_oss_notify_callback = NULL;
for (idx = 0; idx < SNDRV_CARDS; idx++) {
if (snd_cards[idx])
snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
}
}
module_init(alsa_mixer_oss_init)
module_exit(alsa_mixer_oss_exit)
EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
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