diff options
Diffstat (limited to 'sound/core/oss/mixer_oss.c')
| -rw-r--r-- | sound/core/oss/mixer_oss.c | 1451 |
1 files changed, 1451 insertions, 0 deletions
diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c new file mode 100644 index 000000000..cb27bbe75 --- /dev/null +++ b/sound/core/oss/mixer_oss.c @@ -0,0 +1,1451 @@ +/* + * OSS emulation layer for the mixer interface + * Copyright (c) by Jaroslav Kysela <perex@perex.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 <linux/init.h> +#include <linux/slab.h> +#include <linux/time.h> +#include <linux/string.h> +#include <linux/module.h> +#include <linux/compat.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@perex.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; + + err = nonseekable_open(inode, file); + if (err < 0) + return err; + + card = snd_lookup_oss_minor_data(iminor(inode), + SNDRV_OSS_DEVICE_TYPE_MIXER); + if (card == NULL) + return -ENODEV; + if (card->mixer_oss == NULL) { + snd_card_unref(card); + return -ENODEV; + } + err = snd_card_file_add(card, file); + if (err < 0) { + snd_card_unref(card); + return err; + } + fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL); + if (fmixer == NULL) { + snd_card_file_remove(card, file); + snd_card_unref(card); + 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); + snd_card_unref(card); + return -EFAULT; + } + snd_card_unref(card); + 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 = 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; + mutex_lock(&mixer->reg_mutex); + for (chn = 0; chn < 31; chn++) { + pslot = &mixer->slots[chn]; + if (pslot->put_volume || pslot->put_recsrc) + result |= 1 << chn; + } + mutex_unlock(&mixer->reg_mutex); + 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; + mutex_lock(&mixer->reg_mutex); + for (chn = 0; chn < 31; chn++) { + pslot = &mixer->slots[chn]; + if (pslot->put_volume && pslot->stereo) + result |= 1 << chn; + } + mutex_unlock(&mixer->reg_mutex); + 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; + mutex_lock(&mixer->reg_mutex); + 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; + } + } + mutex_unlock(&mixer->reg_mutex); + 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; + mutex_lock(&mixer->reg_mutex); + if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ + unsigned int index; + result = mixer->get_recsrc(fmixer, &index); + if (result < 0) + goto unlock; + result = 1 << index; + } 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; + } + } + } + mixer->oss_recsrc = result; + unlock: + mutex_unlock(&mixer->reg_mutex); + return 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; + unsigned int index; + int result = 0; + + if (mixer == NULL) + return -EIO; + mutex_lock(&mixer->reg_mutex); + 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, &index); + result = 1 << index; + } + 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; + } + } + } + mutex_unlock(&mixer->reg_mutex); + 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; + mutex_lock(&mixer->reg_mutex); + 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; + if (snd_BUG_ON(left < 0 || left > 100)) { + result = -EIO; + goto unlock; + } + if (snd_BUG_ON(right < 0 || right > 100)) { + result = -EIO; + goto unlock; + } + if (result >= 0) { + pslot->volume[0] = left; + pslot->volume[1] = right; + result = (left & 0xff) | ((right & 0xff) << 8); + } + unlock: + mutex_unlock(&mixer->reg_mutex); + 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; + mutex_lock(&mixer->reg_mutex); + 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) + goto unlock; + pslot->volume[0] = left; + pslot->volume[1] = right; + result = (left & 0xff) | ((right & 0xff) << 8); + unlock: + mutex_unlock(&mixer->reg_mutex); + return result; +} + +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; + + if (snd_BUG_ON(!fmixer)) + 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(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; + + if (snd_BUG_ON(!card)) + 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); +} +EXPORT_SYMBOL(snd_mixer_oss_ioctl_card); + +#ifdef CONFIG_COMPAT +/* all compatible */ +static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd, + unsigned long arg) +{ + return snd_mixer_oss_ioctl1(file->private_data, cmd, + (unsigned long)compat_ptr(arg)); +} +#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, + .llseek = no_llseek, + .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; + strlcpy(id.name, name, sizeof(id.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 = 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) { + 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 (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(&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 = 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_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_CSWITCH) + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], 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_CROUTE) + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], 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_CSWITCH) { + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], 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_CROUTE) { + snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], 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 = 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 = 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 = 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 = 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 __free_only; + } + 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 = 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); + __free_only: + 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 __free_only; + } + 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 = 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); + __free_only: + 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 = 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; +} + +/* In a separate function to keep gcc 3.2 happy - do NOT merge this in + snd_mixer_oss_build_input! */ +static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer, + struct snd_mixer_oss_assign_table *ptr, + struct slot *slot) +{ + char str[64]; + int err; + + err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index, + SNDRV_MIXER_OSS_ITEM_GLOBAL); + if (err) + return err; + sprintf(str, "%s Switch", ptr->name); + err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_GSWITCH); + if (err) + return err; + sprintf(str, "%s Route", ptr->name); + err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_GROUTE); + if (err) + return err; + sprintf(str, "%s Volume", ptr->name); + err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_GVOLUME); + if (err) + return err; + sprintf(str, "%s Playback Switch", ptr->name); + err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_PSWITCH); + if (err) + return err; + sprintf(str, "%s Playback Route", ptr->name); + err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_PROUTE); + if (err) + return err; + sprintf(str, "%s Playback Volume", ptr->name); + err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_PVOLUME); + if (err) + return err; + sprintf(str, "%s Capture Switch", ptr->name); + err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_CSWITCH); + if (err) + return err; + sprintf(str, "%s Capture Route", ptr->name); + err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_CROUTE); + if (err) + return err; + sprintf(str, "%s Capture Volume", ptr->name); + err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, + SNDRV_MIXER_OSS_ITEM_CVOLUME); + if (err) + return err; + + return 0; +} + +/* + * 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_all(mixer, ptr, &slot)) + 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); + kfree(uinfo); + 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); + kfree(uinfo); + 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_SND_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]; + const char *cptr; + unsigned int idx; + int ch; + 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) { + pr_err("ALSA: 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 */ + pr_err("ALSA: 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) + 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 | 0644; + 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_SND_PROC_FS */ +#define snd_mixer_oss_proc_init(mix) +#define snd_mixer_oss_proc_done(mix) +#endif /* CONFIG_SND_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, "Beep", 0 }, + { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */ + { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */ + { 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, "Speaker", 0 }, /*fallback*/ + { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/ + { 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; + + if (!mixer) + return 0; + card = mixer->card; + if (snd_BUG_ON(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) { + int idx, err; + + mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL); + if (mixer == NULL) + return -ENOMEM; + mutex_init(&mixer->reg_mutex); + if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, + card, 0, + &snd_mixer_oss_f_ops, card)) < 0) { + dev_err(card->dev, + "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 + snprintf(mixer->name, sizeof(mixer->name), + "mixer%i", card->number); +#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) |