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Diffstat (limited to 'sound/core/pcm.c')
-rw-r--r--sound/core/pcm.c70
1 files changed, 21 insertions, 49 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index cfc56c806964..0345e53a340c 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -161,7 +161,7 @@ static int snd_pcm_control_ioctl(struct snd_card *card,
if (get_user(val, (int __user *)arg))
return -EFAULT;
- control->prefer_pcm_subdevice = val;
+ control->preferred_subdevice[SND_CTL_SUBDEV_PCM] = val;
return 0;
}
}
@@ -673,6 +673,8 @@ static inline int snd_pcm_substream_proc_init(struct snd_pcm_substream *substrea
static inline int snd_pcm_substream_proc_done(struct snd_pcm_substream *substream) { return 0; }
#endif /* CONFIG_SND_VERBOSE_PROCFS */
+static const struct attribute_group *pcm_dev_attr_groups[];
+
/**
* snd_pcm_new_stream - create a new PCM stream
* @pcm: the pcm instance
@@ -698,7 +700,15 @@ int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count)
pstr->stream = stream;
pstr->pcm = pcm;
pstr->substream_count = substream_count;
- if (substream_count > 0 && !pcm->internal) {
+ if (!substream_count)
+ return 0;
+
+ snd_device_initialize(&pstr->dev, pcm->card);
+ pstr->dev.groups = pcm_dev_attr_groups;
+ dev_set_name(&pstr->dev, "pcmC%iD%i%c", pcm->card->number, pcm->device,
+ stream == SNDRV_PCM_STREAM_PLAYBACK ? 'p' : 'c');
+
+ if (!pcm->internal) {
err = snd_pcm_stream_proc_init(pstr);
if (err < 0) {
pcm_err(pcm, "Error in snd_pcm_stream_proc_init\n");
@@ -868,6 +878,8 @@ static void snd_pcm_free_stream(struct snd_pcm_str * pstr)
kfree(setup);
}
#endif
+ if (pstr->substream_count)
+ put_device(&pstr->dev);
}
static int snd_pcm_free(struct snd_pcm *pcm)
@@ -901,9 +913,8 @@ int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream,
struct snd_pcm_str * pstr;
struct snd_pcm_substream *substream;
struct snd_pcm_runtime *runtime;
- struct snd_ctl_file *kctl;
struct snd_card *card;
- int prefer_subdevice = -1;
+ int prefer_subdevice;
size_t size;
if (snd_BUG_ON(!pcm || !rsubstream))
@@ -914,15 +925,7 @@ int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream,
return -ENODEV;
card = pcm->card;
- read_lock(&card->ctl_files_rwlock);
- list_for_each_entry(kctl, &card->ctl_files, list) {
- if (kctl->pid == task_pid(current)) {
- prefer_subdevice = kctl->prefer_pcm_subdevice;
- if (prefer_subdevice != -1)
- break;
- }
- }
- read_unlock(&card->ctl_files_rwlock);
+ prefer_subdevice = snd_ctl_get_preferred_subdevice(card, SND_CTL_SUBDEV_PCM);
switch (stream) {
case SNDRV_PCM_STREAM_PLAYBACK:
@@ -1078,9 +1081,7 @@ static int snd_pcm_dev_register(struct snd_device *device)
int cidx, err;
struct snd_pcm_substream *substream;
struct snd_pcm_notify *notify;
- char str[16];
struct snd_pcm *pcm;
- struct device *dev;
if (snd_BUG_ON(!device || !device->device_data))
return -ENXIO;
@@ -1097,42 +1098,22 @@ static int snd_pcm_dev_register(struct snd_device *device)
continue;
switch (cidx) {
case SNDRV_PCM_STREAM_PLAYBACK:
- sprintf(str, "pcmC%iD%ip", pcm->card->number, pcm->device);
devtype = SNDRV_DEVICE_TYPE_PCM_PLAYBACK;
break;
case SNDRV_PCM_STREAM_CAPTURE:
- sprintf(str, "pcmC%iD%ic", pcm->card->number, pcm->device);
devtype = SNDRV_DEVICE_TYPE_PCM_CAPTURE;
break;
}
- /* device pointer to use, pcm->dev takes precedence if
- * it is assigned, otherwise fall back to card's device
- * if possible */
- dev = pcm->dev;
- if (!dev)
- dev = snd_card_get_device_link(pcm->card);
/* register pcm */
- err = snd_register_device_for_dev(devtype, pcm->card,
- pcm->device,
- &snd_pcm_f_ops[cidx],
- pcm, str, dev);
+ err = snd_register_device(devtype, pcm->card, pcm->device,
+ &snd_pcm_f_ops[cidx], pcm,
+ &pcm->streams[cidx].dev);
if (err < 0) {
list_del(&pcm->list);
mutex_unlock(&register_mutex);
return err;
}
- dev = snd_get_device(devtype, pcm->card, pcm->device);
- if (dev) {
- err = sysfs_create_groups(&dev->kobj,
- pcm_dev_attr_groups);
- if (err < 0)
- dev_warn(dev,
- "pcm %d:%d: cannot create sysfs groups\n",
- pcm->card->number, pcm->device);
- put_device(dev);
- }
-
for (substream = pcm->streams[cidx].substream; substream; substream = substream->next)
snd_pcm_timer_init(substream);
}
@@ -1149,7 +1130,7 @@ static int snd_pcm_dev_disconnect(struct snd_device *device)
struct snd_pcm *pcm = device->device_data;
struct snd_pcm_notify *notify;
struct snd_pcm_substream *substream;
- int cidx, devtype;
+ int cidx;
mutex_lock(&register_mutex);
if (list_empty(&pcm->list))
@@ -1172,16 +1153,7 @@ static int snd_pcm_dev_disconnect(struct snd_device *device)
notify->n_disconnect(pcm);
}
for (cidx = 0; cidx < 2; cidx++) {
- devtype = -1;
- switch (cidx) {
- case SNDRV_PCM_STREAM_PLAYBACK:
- devtype = SNDRV_DEVICE_TYPE_PCM_PLAYBACK;
- break;
- case SNDRV_PCM_STREAM_CAPTURE:
- devtype = SNDRV_DEVICE_TYPE_PCM_CAPTURE;
- break;
- }
- snd_unregister_device(devtype, pcm->card, pcm->device);
+ snd_unregister_device(&pcm->streams[cidx].dev);
if (pcm->streams[cidx].chmap_kctl) {
snd_ctl_remove(pcm->card, pcm->streams[cidx].chmap_kctl);
pcm->streams[cidx].chmap_kctl = NULL;