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| author | Mark Brown <broonie@linaro.org> | 2013-07-04 18:30:01 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-07-04 18:30:01 +0100 |
| commit | 986a622df307644af14618bee54c901aa74816da (patch) | |
| tree | 6da87812b9120634381e3e3987e115f90bd562e0 /sound/soc/ux500/ux500_pcm.c | |
| parent | 8bb495e3f02401ee6f76d1b1d77f3ac9f079e376 (diff) | |
| parent | 28e5ca73ef9072ed58dbb81cfff6f908be8e3cd4 (diff) | |
| download | blackbird-op-linux-986a622df307644af14618bee54c901aa74816da.tar.gz blackbird-op-linux-986a622df307644af14618bee54c901aa74816da.zip | |
Merge remote-tracking branch 'asoc/fix/fsl' into asoc-linus
Diffstat (limited to 'sound/soc/ux500/ux500_pcm.c')
| -rw-r--r-- | sound/soc/ux500/ux500_pcm.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sound/soc/ux500/ux500_pcm.c b/sound/soc/ux500/ux500_pcm.c index b6e5ae277299..5f01c19776bf 100644 --- a/sound/soc/ux500/ux500_pcm.c +++ b/sound/soc/ux500/ux500_pcm.c @@ -103,10 +103,40 @@ static struct dma_chan *ux500_pcm_request_chan(struct snd_soc_pcm_runtime *rtd, return snd_dmaengine_pcm_request_channel(stedma40_filter, dma_cfg); } +static int ux500_pcm_prepare_slave_config(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct dma_slave_config *slave_config) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct ux500_msp_dma_params *dma_params; + struct stedma40_chan_cfg *dma_cfg; + int ret; + + dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + dma_cfg = dma_params->dma_cfg; + + ret = snd_hwparams_to_dma_slave_config(substream, params, slave_config); + if (ret) + return ret; + + slave_config->dst_maxburst = 4; + slave_config->dst_addr_width = dma_cfg->dst_info.data_width; + slave_config->src_maxburst = 4; + slave_config->src_addr_width = dma_cfg->src_info.data_width; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + slave_config->dst_addr = dma_params->tx_rx_addr; + else + slave_config->src_addr = dma_params->tx_rx_addr; + + return 0; +} + static const struct snd_dmaengine_pcm_config ux500_dmaengine_pcm_config = { .pcm_hardware = &ux500_pcm_hw, .compat_request_channel = ux500_pcm_request_chan, .prealloc_buffer_size = 128 * 1024, + .prepare_slave_config = ux500_pcm_prepare_slave_config, }; int ux500_pcm_register_platform(struct platform_device *pdev) |
