[alsa-devel] [PATCH 1/5] ASoC: omap-pcm: Move to generic DMA for DT binding

[Sebastien Guiriec]

Update in order to use OMAP DMA DT binding for OMAP2+. In case
of DT boot snd_dmaengine_generic_pcm_open function is used.

Signed-off-by: Sebastien Guiriec <s-guiriec at ti.com>
---
 sound/soc/omap/omap-pcm.c |   12 ++++++++++--
 sound/soc/omap/omap-pcm.h |    1 +
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c
index c722c2e..df01a95 100644
--- a/sound/soc/omap/omap-pcm.c
+++ b/sound/soc/omap/omap-pcm.c
@@ -176,13 +176,21 @@ static int omap_pcm_open(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct omap_pcm_dma_data *dma_data;
+	int ret;
 
 	snd_soc_set_runtime_hwparams(substream, &omap_pcm_hardware);
 
 	dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
 
-	return snd_dmaengine_pcm_open(substream, omap_dma_filter_fn,
-				      &dma_data->dma_req);
+	if (rtd->cpu_dai->dev->of_node)
+		ret = snd_dmaengine_generic_pcm_open(substream,
+						     rtd->cpu_dai->dev,
+						     dma_data->dma_name);
+	else
+		ret = snd_dmaengine_pcm_open(substream, omap_dma_filter_fn,
+					     &dma_data->dma_req);
+
+	return ret;
 }
 
 static int omap_pcm_close(struct snd_pcm_substream *substream)
diff --git a/sound/soc/omap/omap-pcm.h b/sound/soc/omap/omap-pcm.h
index cabe74c..06faa38 100644
--- a/sound/soc/omap/omap-pcm.h
+++ b/sound/soc/omap/omap-pcm.h
@@ -29,6 +29,7 @@ struct snd_pcm_substream;
 
 struct omap_pcm_dma_data {
 	char		*name;		/* stream identifier */
+	char		*dma_name;	/* DMA request name */
 	int		dma_req;	/* DMA request line */
 	unsigned long	port_addr;	/* transmit/receive register */
 	void (*set_threshold)(struct snd_pcm_substream *substream);
-- 
1.7.10.4