提交 c04019d4 编写于 作者: T Timur Tabi 提交者: Mark Brown

ASoC: add support for separate codec DAIs to the fsl_dma driver

Some codecs have separate DAIs for playback and capture, so the DMA driver
should allocate a DMA buffer only for the streams that are valid when the
driver is opened.
Signed-off-by: NTimur Tabi <timur@freescale.com>
Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
上级 b67696b4
无相关合并请求
......@@ -303,21 +303,29 @@ static int fsl_dma_new(struct snd_card *card, struct snd_soc_dai *dai,
if (!card->dev->coherent_dma_mask)
card->dev->coherent_dma_mask = fsl_dma_dmamask;
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev,
fsl_dma_hardware.buffer_bytes_max,
&pcm->streams[0].substream->dma_buffer);
if (ret) {
dev_err(card->dev, "can't allocate playback dma buffer\n");
return ret;
/* Some codecs have separate DAIs for playback and capture, so we
* should allocate a DMA buffer only for the streams that are valid.
*/
if (dai->driver->playback.channels_min) {
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev,
fsl_dma_hardware.buffer_bytes_max,
&pcm->streams[0].substream->dma_buffer);
if (ret) {
dev_err(card->dev, "can't alloc playback dma buffer\n");
return ret;
}
}
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev,
fsl_dma_hardware.buffer_bytes_max,
&pcm->streams[1].substream->dma_buffer);
if (ret) {
snd_dma_free_pages(&pcm->streams[0].substream->dma_buffer);
dev_err(card->dev, "can't allocate capture dma buffer\n");
return ret;
if (dai->driver->capture.channels_min) {
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev,
fsl_dma_hardware.buffer_bytes_max,
&pcm->streams[1].substream->dma_buffer);
if (ret) {
snd_dma_free_pages(&pcm->streams[0].substream->dma_buffer);
dev_err(card->dev, "can't alloc capture dma buffer\n");
return ret;
}
}
return 0;
......
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