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-rw-r--r--sound/core/pcm_dmaengine.c22
1 files changed, 9 insertions, 13 deletions
diff --git a/sound/core/pcm_dmaengine.c b/sound/core/pcm_dmaengine.c
index aa924d9b7986..94d08733cb38 100644
--- a/sound/core/pcm_dmaengine.c
+++ b/sound/core/pcm_dmaengine.c
@@ -63,23 +63,19 @@ int snd_hwparams_to_dma_slave_config(const struct snd_pcm_substream *substream,
struct dma_slave_config *slave_config)
{
enum dma_slave_buswidth buswidth;
+ int bits;
- switch (params_format(params)) {
- case SNDRV_PCM_FORMAT_S8:
+ bits = snd_pcm_format_physical_width(params_format(params));
+ if (bits < 8 || bits > 64)
+ return -EINVAL;
+ else if (bits == 8)
buswidth = DMA_SLAVE_BUSWIDTH_1_BYTE;
- break;
- case SNDRV_PCM_FORMAT_S16_LE:
+ else if (bits == 16)
buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES;
- break;
- case SNDRV_PCM_FORMAT_S18_3LE:
- case SNDRV_PCM_FORMAT_S20_3LE:
- case SNDRV_PCM_FORMAT_S24_LE:
- case SNDRV_PCM_FORMAT_S32_LE:
+ else if (bits <= 32)
buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES;
- break;
- default:
- return -EINVAL;
- }
+ else
+ buswidth = DMA_SLAVE_BUSWIDTH_8_BYTES;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
slave_config->direction = DMA_MEM_TO_DEV;