ASoC: mmp-pcm: config pcm slave via generic dmaengine

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@marvell.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

2 files changed, 4 insertions, 16 deletions

diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig
index 4db74a083db1..6473052b6899 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 7929e19b0ef5..682ee52942bf 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;