diff options
| author | Shengjiu Wang <shengjiu.wang@freescale.com> | 2015-06-23 18:23:53 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-07-07 13:16:12 +0100 |
| commit | 0d69e0dddf5fe86675c56bc0f0520ffb0cbf1fcd (patch) | |
| tree | 2a71f90e41c45a94bf7e226386b7958a4c8e03a2 /sound/soc/fsl/imx-pcm-dma.c | |
| parent | d770e558e21961ad6cfdf0ff7df0eb5d7d4f0754 (diff) | |
| download | linux-0d69e0dddf5fe86675c56bc0f0520ffb0cbf1fcd.tar.bz2 | |
ASoC: fsl: Add dedicated DMA buffer size for each cpu dai
As the ssi is not the only cpu dai, there are esai, spdif, sai.
and imx_pcm_dma can be used by all of them. Especially ESAI need
a larger DMA buffer size. So Add dedicated DMA buffer for each cpu
dai.
Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Acked-by: Timur Tabi <timur@tabi.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/fsl/imx-pcm-dma.c')
| -rw-r--r-- | sound/soc/fsl/imx-pcm-dma.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/sound/soc/fsl/imx-pcm-dma.c b/sound/soc/fsl/imx-pcm-dma.c index 0db94f492e97..1fc01ed3279d 100644 --- a/sound/soc/fsl/imx-pcm-dma.c +++ b/sound/soc/fsl/imx-pcm-dma.c @@ -40,7 +40,7 @@ static const struct snd_pcm_hardware imx_pcm_hardware = { SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME, - .buffer_bytes_max = IMX_SSI_DMABUF_SIZE, + .buffer_bytes_max = IMX_DEFAULT_DMABUF_SIZE, .period_bytes_min = 128, .period_bytes_max = 65535, /* Limited by SDMA engine */ .periods_min = 2, @@ -52,13 +52,30 @@ static const struct snd_dmaengine_pcm_config imx_dmaengine_pcm_config = { .pcm_hardware = &imx_pcm_hardware, .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, .compat_filter_fn = filter, - .prealloc_buffer_size = IMX_SSI_DMABUF_SIZE, + .prealloc_buffer_size = IMX_DEFAULT_DMABUF_SIZE, }; -int imx_pcm_dma_init(struct platform_device *pdev) +int imx_pcm_dma_init(struct platform_device *pdev, size_t size) { + struct snd_dmaengine_pcm_config *config; + struct snd_pcm_hardware *pcm_hardware; + + config = devm_kzalloc(&pdev->dev, + sizeof(struct snd_dmaengine_pcm_config), GFP_KERNEL); + *config = imx_dmaengine_pcm_config; + if (size) + config->prealloc_buffer_size = size; + + pcm_hardware = devm_kzalloc(&pdev->dev, + sizeof(struct snd_pcm_hardware), GFP_KERNEL); + *pcm_hardware = imx_pcm_hardware; + if (size) + pcm_hardware->buffer_bytes_max = size; + + config->pcm_hardware = pcm_hardware; + return devm_snd_dmaengine_pcm_register(&pdev->dev, - &imx_dmaengine_pcm_config, + config, SND_DMAENGINE_PCM_FLAG_COMPAT); } EXPORT_SYMBOL_GPL(imx_pcm_dma_init); |