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>
diff --git a/sound/soc/fsl/imx-pcm-dma.c b/sound/soc/fsl/imx-pcm-dma.c
index 0db94f49..1fc01ed 100644
--- a/sound/soc/fsl/imx-pcm-dma.c
+++ b/sound/soc/fsl/imx-pcm-dma.c
@@ -40,7 +40,7 @@
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 @@
.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);