--- /dev/null
+/*
+ * 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 <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;
+ 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;
+ unsigned int index;
+ if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
+ return err;
+ 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;
+ }
+ }
+ }
+ 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;
+ unsigned int index;
+ 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, &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;
+ }
+ }
+ }
+ 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;
+ if (snd_BUG_ON(left < 0 || left > 100))
+ return -EIO;
+ if (snd_BUG_ON(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;
+
+ 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);
+}
+
+#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,
+ .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_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;
+ 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) {
+ 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 | 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, "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)
+
+EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
Code Review / kvmfornfv.git / blobdiff