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ASoC: davinci-pcm: extract period elapsed functions

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Extract functions that modify the prtd->period member in preparation for
conversion to BATCH mode playback.

Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca>
Reviewed-by: Steven Faludi <stevenfaludi@nanometrics.ca>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Ben Gardiner 2011-05-24 14:50:19 -04:00 committed by Mark Brown
parent ef39eb6f21
commit 10ab3bfda4
1 changed files with 18 additions and 4 deletions
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22
sound/soc/davinci/davinci-pcm.c
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@ -155,6 +155,22 @@ struct davinci_runtime_data {
struct edmacc_param ram_params; struct edmacc_param ram_params;
}; };
static void davinci_pcm_period_elapsed(struct snd_pcm_substream *substream)
{
struct davinci_runtime_data *prtd = substream->runtime->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
prtd->period++;
if (unlikely(prtd->period >= runtime->periods))
prtd->period = 0;
}
static void davinci_pcm_period_reset(struct snd_pcm_substream *substream)
{
struct davinci_runtime_data *prtd = substream->runtime->private_data;
prtd->period = 0;
}
/* /*
* Not used with ping/pong * Not used with ping/pong
*/ */
@ -216,9 +232,7 @@ static void davinci_pcm_enqueue_dma(struct snd_pcm_substream *substream)
edma_set_transfer_params(link, acnt, fifo_level, count, edma_set_transfer_params(link, acnt, fifo_level, count,
fifo_level, ABSYNC); fifo_level, ABSYNC);
prtd->period++; davinci_pcm_period_elapsed(substream);
if (unlikely(prtd->period >= runtime->periods))
prtd->period = 0;
} }
static void davinci_pcm_dma_irq(unsigned link, u16 ch_status, void *data) static void davinci_pcm_dma_irq(unsigned link, u16 ch_status, void *data)
@ -591,7 +605,7 @@ static int davinci_pcm_prepare(struct snd_pcm_substream *substream)
return 0; return 0;
} }
prtd->period = 0; davinci_pcm_period_reset(substream);
davinci_pcm_enqueue_dma(substream); davinci_pcm_enqueue_dma(substream);
/* Copy self-linked parameter RAM entry into master channel */ /* Copy self-linked parameter RAM entry into master channel */