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Merge branch 'topic/compress' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-adsp

This commit is contained in:
Mark Brown 2016-06-13 16:49:41 +01:00
parent 546ad3d024 a4f2d87c63
commit 7a75c0d110
2 changed files with 70 additions and 2 deletions
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5
include/sound/compress_driver.h
View File

@ -68,6 +68,7 @@ struct snd_compr_runtime {
* @ops: pointer to DSP callbacks
* @runtime: pointer to runtime structure
* @device: device pointer
* @error_work: delayed work used when closing the stream due to an error
* @direction: stream direction, playback/recording
* @metadata_set: metadata set flag, true when set
* @next_track: has userspace signal next track transition, true when set
@ -78,6 +79,7 @@ struct snd_compr_stream {
struct snd_compr_ops *ops;
struct snd_compr_runtime *runtime;
struct snd_compr *device;
struct delayed_work error_work;
enum snd_compr_direction direction;
bool metadata_set;
bool next_track;
@ -187,4 +189,7 @@ static inline void snd_compr_drain_notify(struct snd_compr_stream *stream)
wake_up(&stream->runtime->sleep);
}
int snd_compr_stop_error(struct snd_compr_stream *stream,
snd_pcm_state_t state);
#endif

67
sound/core/compress_offload.c
View File

@ -67,6 +67,8 @@ struct snd_compr_file {
struct snd_compr_stream stream;
};
static void error_delayed_work(struct work_struct *work);
/*
* a note on stream states used:
* we use following states in the compressed core
@ -123,6 +125,9 @@ static int snd_compr_open(struct inode *inode, struct file *f)
snd_card_unref(compr->card);
return -ENOMEM;
}
INIT_DELAYED_WORK(&data->stream.error_work, error_delayed_work);
data->stream.ops = compr->ops;
data->stream.direction = dirn;
data->stream.private_data = compr->private_data;
@ -153,6 +158,8 @@ static int snd_compr_free(struct inode *inode, struct file *f)
struct snd_compr_file *data = f->private_data;
struct snd_compr_runtime *runtime = data->stream.runtime;
cancel_delayed_work_sync(&data->stream.error_work);
switch (runtime->state) {
case SNDRV_PCM_STATE_RUNNING:
case SNDRV_PCM_STATE_DRAINING:
@ -237,6 +244,15 @@ snd_compr_ioctl_avail(struct snd_compr_stream *stream, unsigned long arg)
avail = snd_compr_calc_avail(stream, &ioctl_avail);
ioctl_avail.avail = avail;
switch (stream->runtime->state) {
case SNDRV_PCM_STATE_OPEN:
return -EBADFD;
case SNDRV_PCM_STATE_XRUN:
return -EPIPE;
default:
break;
}
if (copy_to_user((__u64 __user *)arg,
&ioctl_avail, sizeof(ioctl_avail)))
return -EFAULT;
@ -346,11 +362,13 @@ static ssize_t snd_compr_read(struct file *f, char __user *buf,
switch (stream->runtime->state) {
case SNDRV_PCM_STATE_OPEN:
case SNDRV_PCM_STATE_PREPARED:
case SNDRV_PCM_STATE_XRUN:
case SNDRV_PCM_STATE_SUSPENDED:
case SNDRV_PCM_STATE_DISCONNECTED:
retval = -EBADFD;
goto out;
case SNDRV_PCM_STATE_XRUN:
retval = -EPIPE;
goto out;
}
avail = snd_compr_get_avail(stream);
@ -399,10 +417,16 @@ static unsigned int snd_compr_poll(struct file *f, poll_table *wait)
stream = &data->stream;
mutex_lock(&stream->device->lock);
if (stream->runtime->state == SNDRV_PCM_STATE_OPEN) {
switch (stream->runtime->state) {
case SNDRV_PCM_STATE_OPEN:
case SNDRV_PCM_STATE_XRUN:
retval = snd_compr_get_poll(stream) | POLLERR;
goto out;
default:
break;
}
poll_wait(f, &stream->runtime->sleep, wait);
avail = snd_compr_get_avail(stream);
@ -697,6 +721,45 @@ static int snd_compr_stop(struct snd_compr_stream *stream)
return retval;
}
static void error_delayed_work(struct work_struct *work)
{
struct snd_compr_stream *stream;
stream = container_of(work, struct snd_compr_stream, error_work.work);
mutex_lock(&stream->device->lock);
stream->ops->trigger(stream, SNDRV_PCM_TRIGGER_STOP);
wake_up(&stream->runtime->sleep);
mutex_unlock(&stream->device->lock);
}
/*
* snd_compr_stop_error: Report a fatal error on a stream
* @stream: pointer to stream
* @state: state to transition the stream to
*
* Stop the stream and set its state.
*
* Should be called with compressed device lock held.
*/
int snd_compr_stop_error(struct snd_compr_stream *stream,
snd_pcm_state_t state)
{
if (stream->runtime->state == state)
return 0;
stream->runtime->state = state;
pr_debug("Changing state to: %d\n", state);
queue_delayed_work(system_power_efficient_wq, &stream->error_work, 0);
return 0;
}
EXPORT_SYMBOL_GPL(snd_compr_stop_error);
static int snd_compress_wait_for_drain(struct snd_compr_stream *stream)
{
int ret;