In DT based implementation, the DMA channel number need to be parsed as a property from device tree. So add dma_prop variable in s3c_dma_params to get the i2s DMA channel number.
Signed-off-by: Padmavathi Venna padma.v@samsung.com --- sound/soc/samsung/dma.c | 1 + sound/soc/samsung/dma.h | 1 + 2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/sound/soc/samsung/dma.c b/sound/soc/samsung/dma.c index f3ebc38..28a7c37 100644 --- a/sound/soc/samsung/dma.c +++ b/sound/soc/samsung/dma.c @@ -170,6 +170,7 @@ static int dma_hw_params(struct snd_pcm_substream *substream, req.cap = (samsung_dma_has_circular() ? DMA_CYCLIC : DMA_SLAVE); req.client = prtd->params->client; + req.dt_dmach_prop = prtd->params->dma_prop; config.direction = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM); diff --git a/sound/soc/samsung/dma.h b/sound/soc/samsung/dma.h index 7d1ead7..2e60415 100644 --- a/sound/soc/samsung/dma.h +++ b/sound/soc/samsung/dma.h @@ -19,6 +19,7 @@ struct s3c_dma_params { int dma_size; /* Size of the DMA transfer */ unsigned ch; struct samsung_dma_ops *ops; + struct property *dma_prop; };
#endif