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ASoC: imx-pcm-dma-mx2: restart DMA after an error 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Sascha Hauer 2010-04-08 11:31:25 +02:00 committed by Mark Brown
parent 206b60e189
commit 671999cb5d
1 changed files with 14 additions and 1 deletions
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15
sound/soc/imx/imx-pcm-dma-mx2.c
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@ -70,7 +70,12 @@ static void imx_ssi_dma_callback(int channel, void *data)
static void snd_imx_dma_err_callback(int channel, void *data, int err)
{
pr_err("DMA error callback called\n");
struct snd_pcm_substream *substream = data;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct imx_pcm_dma_params *dma_params = rtd->dai->cpu_dai->dma_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct imx_pcm_runtime_data *iprtd = runtime->private_data;
int ret;
pr_err("DMA timeout on channel %d -%s%s%s%s\n",
channel,
@ -78,6 +83,14 @@ static void snd_imx_dma_err_callback(int channel, void *data, int err)
err & IMX_DMA_ERR_REQUEST ? " request" : "",
err & IMX_DMA_ERR_TRANSFER ? " transfer" : "",
err & IMX_DMA_ERR_BUFFER ? " buffer" : "");
imx_dma_disable(iprtd->dma);
ret = imx_dma_setup_sg(iprtd->dma, iprtd->sg_list, iprtd->sg_count,
IMX_DMA_LENGTH_LOOP, dma_params->dma_addr,
substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
DMA_MODE_WRITE : DMA_MODE_READ);
if (!ret)
imx_dma_enable(iprtd->dma);
}
static int imx_ssi_dma_alloc(struct snd_pcm_substream *substream)