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Diffstat (limited to 'kernel/sound/soc/fsl/imx-pcm-dma.c')
-rw-r--r--kernel/sound/soc/fsl/imx-pcm-dma.c25
1 files changed, 21 insertions, 4 deletions
diff --git a/kernel/sound/soc/fsl/imx-pcm-dma.c b/kernel/sound/soc/fsl/imx-pcm-dma.c
index 0db94f492..1fc01ed32 100644
--- a/kernel/sound/soc/fsl/imx-pcm-dma.c
+++ b/kernel/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);