diff options
author | Shengjiu Wang <shengjiu.wang@nxp.com> | 2019-09-27 03:46:11 +0200 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2019-10-01 13:18:25 +0200 |
commit | e957204e732bc2916a241dc61dd7dd14e9a98350 (patch) | |
tree | 41d1daf1182778a9d3cc23522c264af3e240996b /sound/soc/soc-generic-dmaengine-pcm.c | |
parent | ASoC: fsl_asrc: update supported sample format (diff) | |
download | linux-e957204e732bc2916a241dc61dd7dd14e9a98350.tar.xz linux-e957204e732bc2916a241dc61dd7dd14e9a98350.zip |
ASoC: pcm_dmaengine: Extract snd_dmaengine_pcm_refine_runtime_hwparams
When set the runtime hardware parameters, we may need to query
the capability of DMA to complete the parameters.
This patch is to Extract this operation from
dmaengine_pcm_set_runtime_hwparams function to a separate function
snd_dmaengine_pcm_refine_runtime_hwparams, that other components
which need this feature can call this function.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/d728f65194e9978cbec4132b522d4fed420d704a.1569493933.git.shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/soc-generic-dmaengine-pcm.c')
-rw-r--r-- | sound/soc/soc-generic-dmaengine-pcm.c | 61 |
1 files changed, 6 insertions, 55 deletions
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index 5552c66ca642..f2c98a9cbf75 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -118,12 +118,7 @@ static int dmaengine_pcm_set_runtime_hwparams(struct snd_pcm_substream *substrea struct device *dma_dev = dmaengine_dma_dev(pcm, substream); struct dma_chan *chan = pcm->chan[substream->stream]; struct snd_dmaengine_dai_dma_data *dma_data; - struct dma_slave_caps dma_caps; struct snd_pcm_hardware hw; - u32 addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | - BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | - BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); - snd_pcm_format_t i; int ret; if (pcm->config && pcm->config->pcm_hardware) @@ -145,56 +140,12 @@ static int dmaengine_pcm_set_runtime_hwparams(struct snd_pcm_substream *substrea if (pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE) hw.info |= SNDRV_PCM_INFO_BATCH; - ret = dma_get_slave_caps(chan, &dma_caps); - if (ret == 0) { - if (dma_caps.cmd_pause && dma_caps.cmd_resume) - hw.info |= SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME; - if (dma_caps.residue_granularity <= DMA_RESIDUE_GRANULARITY_SEGMENT) - hw.info |= SNDRV_PCM_INFO_BATCH; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - addr_widths = dma_caps.dst_addr_widths; - else - addr_widths = dma_caps.src_addr_widths; - } - - /* - * If SND_DMAENGINE_PCM_DAI_FLAG_PACK is set keep - * hw.formats set to 0, meaning no restrictions are in place. - * In this case it's the responsibility of the DAI driver to - * provide the supported format information. - */ - if (!(dma_data->flags & SND_DMAENGINE_PCM_DAI_FLAG_PACK)) - /* - * Prepare formats mask for valid/allowed sample types. If the - * dma does not have support for the given physical word size, - * it needs to be masked out so user space can not use the - * format which produces corrupted audio. - * In case the dma driver does not implement the slave_caps the - * default assumption is that it supports 1, 2 and 4 bytes - * widths. - */ - for (i = SNDRV_PCM_FORMAT_FIRST; i <= SNDRV_PCM_FORMAT_LAST; i++) { - int bits = snd_pcm_format_physical_width(i); - - /* - * Enable only samples with DMA supported physical - * widths - */ - switch (bits) { - case 8: - case 16: - case 24: - case 32: - case 64: - if (addr_widths & (1 << (bits / 8))) - hw.formats |= pcm_format_to_bits(i); - break; - default: - /* Unsupported types */ - break; - } - } + ret = snd_dmaengine_pcm_refine_runtime_hwparams(substream, + dma_data, + &hw, + chan); + if (ret) + return ret; return snd_soc_set_runtime_hwparams(substream, &hw); } |