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path: root/sound/soc/imx/imx-pcm-dma-mx2.c
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Diffstat (limited to 'sound/soc/imx/imx-pcm-dma-mx2.c')
-rw-r--r--sound/soc/imx/imx-pcm-dma-mx2.c24
1 files changed, 21 insertions, 3 deletions
diff --git a/sound/soc/imx/imx-pcm-dma-mx2.c b/sound/soc/imx/imx-pcm-dma-mx2.c
index 19452e44afd..2b31ac673ea 100644
--- a/sound/soc/imx/imx-pcm-dma-mx2.c
+++ b/sound/soc/imx/imx-pcm-dma-mx2.c
@@ -19,6 +19,7 @@
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/slab.h>
#include <sound/core.h>
#include <sound/initval.h>
@@ -70,7 +71,12 @@ 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,
@@ -78,16 +84,26 @@ 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)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct imx_pcm_dma_params *dma_params = rtd->dai->cpu_dai->dma_data;
+ struct imx_pcm_dma_params *dma_params;
struct snd_pcm_runtime *runtime = substream->runtime;
struct imx_pcm_runtime_data *iprtd = runtime->private_data;
int ret;
+ dma_params = snd_soc_get_dma_data(rtd->dai->cpu_dai, substream);
+
iprtd->dma = imx_dma_request_by_prio(DRV_NAME, DMA_PRIO_HIGH);
if (iprtd->dma < 0) {
pr_err("Failed to claim the audio DMA\n");
@@ -192,10 +208,12 @@ static int snd_imx_pcm_prepare(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct imx_pcm_dma_params *dma_params = rtd->dai->cpu_dai->dma_data;
+ struct imx_pcm_dma_params *dma_params;
struct imx_pcm_runtime_data *iprtd = runtime->private_data;
int err;
+ dma_params = snd_soc_get_dma_data(rtd->dai->cpu_dai, substream);
+
iprtd->substream = substream;
iprtd->buf = (unsigned int *)substream->dma_buffer.area;
iprtd->period_cnt = 0;