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ASoC/mpc5200: add to_psc_dma_stream() helper

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Move the resolving of the psc_dma_stream pointer to a helper function
to reduce duplicate code

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Grant Likely 2009-11-07 01:34:31 -07:00 committed by Mark Brown
parent c487827475
commit 1d8222e8df
2 changed files with 10 additions and 6 deletions
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7
sound/soc/fsl/mpc5200_dma.c
View File

@ -133,17 +133,12 @@ static int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd)
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct psc_dma_stream *s;
struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma);
struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
u16 imr;
unsigned long flags;
int i;
if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
s = &psc_dma->capture;
else
s = &psc_dma->playback;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
dev_dbg(psc_dma->dev, "START: stream=%i fbits=%u ps=%u #p=%u\n",

9
sound/soc/fsl/mpc5200_dma.h
View File

@ -68,6 +68,15 @@ struct psc_dma {
} stats;
};
/* Utility for retrieving psc_dma_stream structure from a substream */
inline struct psc_dma_stream *
to_psc_dma_stream(struct snd_pcm_substream *substream, struct psc_dma *psc_dma)
{
if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
return &psc_dma->capture;
return &psc_dma->playback;
}
int mpc5200_audio_dma_create(struct of_device *op);
int mpc5200_audio_dma_destroy(struct of_device *op);