[media] em28xx-audio: Some Alsa API fixes

Mark the alsa stream with SNDRV_PCM_INFO_BATCH,
as the timing to get audio streams can vary.

Also, add SNDRV_PCM_TRIGGER for pause/release.

while here, fix the stop indicator, to be sure that audio
will be properly released at the stop events.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/em28xx/em28xx-audio.c b/drivers/media/video/em28xx/em28xx-audio.c
index 5381f6d..47f21a3 100644 (file)
--- a/drivers/media/video/em28xx/em28xx-audio.c
+++ b/drivers/media/video/em28xx/em28xx-audio.c
@@ -249,6 +249,7 @@ static struct snd_pcm_hardware snd_em28xx_hw_capture = {
        .info = SNDRV_PCM_INFO_BLOCK_TRANSFER |
                SNDRV_PCM_INFO_MMAP           |
                SNDRV_PCM_INFO_INTERLEAVED    |
+               SNDRV_PCM_INFO_BATCH          |
                SNDRV_PCM_INFO_MMAP_VALID,
 
        .formats = SNDRV_PCM_FMTBIT_S16_LE,
@@ -401,11 +402,15 @@ static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream,
        int retval = 0;
 
        switch (cmd) {
+       case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */
+       case SNDRV_PCM_TRIGGER_RESUME: /* fall through */
        case SNDRV_PCM_TRIGGER_START:
                atomic_set(&dev->stream_started, 1);
                break;
+       case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */
+       case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */
        case SNDRV_PCM_TRIGGER_STOP:
-               atomic_set(&dev->stream_started, 1);
+               atomic_set(&dev->stream_started, 0);
                break;
        default:
                retval = -EINVAL;