diff options
Diffstat (limited to 'sound/soc/davinci/davinci-i2s.c')
| -rw-r--r-- | sound/soc/davinci/davinci-i2s.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/sound/soc/davinci/davinci-i2s.c b/sound/soc/davinci/davinci-i2s.c index 6fa1b6a..88ccef7 100644 --- a/sound/soc/davinci/davinci-i2s.c +++ b/sound/soc/davinci/davinci-i2s.c @@ -420,6 +420,20 @@ static int davinci_i2s_hw_params(struct snd_pcm_substream *substream, return 0; } +static int davinci_i2s_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct davinci_mcbsp_dev *dev = rtd->dai->cpu_dai->private_data; + int playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK); + davinci_mcbsp_stop(dev, playback); + if ((dev->pcr & DAVINCI_MCBSP_PCR_FSXM) == 0) { + /* codec is master */ + davinci_mcbsp_start(dev, substream); + } + return 0; +} + static int davinci_i2s_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { @@ -427,6 +441,8 @@ static int davinci_i2s_trigger(struct snd_pcm_substream *substream, int cmd, struct davinci_mcbsp_dev *dev = rtd->dai->cpu_dai->private_data; int ret = 0; int playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK); + if ((dev->pcr & DAVINCI_MCBSP_PCR_FSXM) == 0) + return 0; /* return if codec is master */ switch (cmd) { case SNDRV_PCM_TRIGGER_START: @@ -442,10 +458,18 @@ static int davinci_i2s_trigger(struct snd_pcm_substream *substream, int cmd, default: ret = -EINVAL; } - return ret; } +static void davinci_i2s_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct davinci_mcbsp_dev *dev = rtd->dai->cpu_dai->private_data; + int playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK); + davinci_mcbsp_stop(dev, playback); +} + static int davinci_i2s_probe(struct platform_device *pdev, struct snd_soc_dai *dai) { @@ -531,6 +555,8 @@ static void davinci_i2s_remove(struct platform_device *pdev, static struct snd_soc_dai_ops davinci_i2s_dai_ops = { .startup = davinci_i2s_startup, + .shutdown = davinci_i2s_shutdown, + .prepare = davinci_i2s_prepare, .trigger = davinci_i2s_trigger, .hw_params = davinci_i2s_hw_params, .set_fmt = davinci_i2s_set_dai_fmt, |