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ASoC: stm32: spdifrx: fix 16 bits capture

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Change DMA bus width to manage properly 16 bits packed format.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
olivier moysan 2017-11-06 16:18:52 +01:00 committed by Mark Brown
parent 7e751e375a
commit 9036e4acc8
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GPG Key ID: 24D68B725D5487D0
1 changed files with 6 additions and 2 deletions
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8
sound/soc/stm/stm32_spdifrx.c
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@ -750,17 +750,21 @@ static int stm32_spdifrx_hw_params(struct snd_pcm_substream *substream,
switch (data_size) { switch (data_size) {
case 16: case 16:
fmt = SPDIFRX_DRFMT_PACKED; fmt = SPDIFRX_DRFMT_PACKED;
spdifrx->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
break; break;
case 32: case 32:
fmt = SPDIFRX_DRFMT_LEFT; fmt = SPDIFRX_DRFMT_LEFT;
spdifrx->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
break; break;
default: default:
dev_err(&spdifrx->pdev->dev, "Unexpected data format\n"); dev_err(&spdifrx->pdev->dev, "Unexpected data format\n");
return -EINVAL; return -EINVAL;
} }
/*
* Set buswidth to 4 bytes for all data formats.
* Packed format: transfer 2 x 2 bytes samples
* Left format: transfer 1 x 3 bytes samples + 1 dummy byte
*/
spdifrx->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
snd_soc_dai_init_dma_data(cpu_dai, NULL, &spdifrx->dma_params); snd_soc_dai_init_dma_data(cpu_dai, NULL, &spdifrx->dma_params);
return regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR, return regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR,