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ASoC: DaVinci: i2s, add davinci_i2s_prepare and shutdown 

If the codec is master then prepare should call
mcbsp_start, not trigger.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Troy Kisky 2009-07-04 19:29:59 -07:00 коммит произвёл Mark Brown
Родитель f5cfa954e6
Коммит af0adf3e81
1 изменённых файлов: 27 добавлений и 1 удалений
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28
sound/soc/davinci/davinci-i2s.c
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@ -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,