[alsa-devel] [PATCH] ASoC: mmp-pcm: config pcm slave via generic dmaengine
Qiao Zhou
zhouqiao at marvell.com
Tue Dec 17 09:22:24 CET 2013
use snd_dmaengine_pcm_prepare_slave_config to set slave config,
and remove the max_burst_size = 4 hard code.
select SND_SOC_GENERIC_DMAENGINE_PCM for mmp-pcm.
Signed-off-by: Qiao Zhou <zhouqiao at marvell.com>
---
sound/soc/pxa/Kconfig | 2 +-
sound/soc/pxa/mmp-pcm.c | 18 +++---------------
2 files changed, 4 insertions(+), 16 deletions(-)
diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig
index 4db74a0..6473052 100644
--- a/sound/soc/pxa/Kconfig
+++ b/sound/soc/pxa/Kconfig
@@ -11,7 +11,7 @@ config SND_PXA2XX_SOC
config SND_MMP_SOC
bool "Soc Audio for Marvell MMP chips"
depends on ARCH_MMP
- select SND_DMAENGINE_PCM
+ select SND_SOC_GENERIC_DMAENGINE_PCM
select SND_ARM
help
Say Y if you want to add support for codecs attached to
diff --git a/sound/soc/pxa/mmp-pcm.c b/sound/soc/pxa/mmp-pcm.c
index 7929e19..682ee52 100644
--- a/sound/soc/pxa/mmp-pcm.c
+++ b/sound/soc/pxa/mmp-pcm.c
@@ -67,27 +67,15 @@ static int mmp_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_dmaengine_dai_dma_data *dma_params;
struct dma_slave_config slave_config;
int ret;
- dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
- if (!dma_params)
- return 0;
-
- ret = snd_hwparams_to_dma_slave_config(substream, params, &slave_config);
+ ret =
+ snd_dmaengine_pcm_prepare_slave_config(substream, params,
+ &slave_config);
if (ret)
return ret;
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- slave_config.dst_addr = dma_params->addr;
- slave_config.dst_maxburst = 4;
- } else {
- slave_config.src_addr = dma_params->addr;
- slave_config.src_maxburst = 4;
- }
-
ret = dmaengine_slave_config(chan, &slave_config);
if (ret)
return ret;
--
1.7.0.4
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