This patch simplifies the buffer pre-allocation code of fsl_dma driver with the standard managed buffer helper. It uses the newly introduced fixed-size buffer allocation helper.
Cc: Nicolin Chen nicoleotsuka@gmail.com Cc: Xiubo Li Xiubo.Lee@gmail.com Cc: Fabio Estevam festevam@gmail.com Cc: Shengjiu Wang shengjiu.wang@gmail.com Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/soc/fsl/fsl_dma.c | 50 +++-------------------------------------- 1 file changed, 3 insertions(+), 47 deletions(-)
diff --git a/sound/soc/fsl/fsl_dma.c b/sound/soc/fsl/fsl_dma.c index 84bd8a5356eb..808fb61a7a0f 100644 --- a/sound/soc/fsl/fsl_dma.c +++ b/sound/soc/fsl/fsl_dma.c @@ -290,32 +290,9 @@ static int fsl_dma_new(struct snd_soc_component *component, if (ret) 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 (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) { - ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev, - fsl_dma_hardware.buffer_bytes_max, - &pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->dma_buffer); - if (ret) { - dev_err(card->dev, "can't alloc playback dma buffer\n"); - return ret; - } - } - - if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) { - ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev, - fsl_dma_hardware.buffer_bytes_max, - &pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->dma_buffer); - if (ret) { - dev_err(card->dev, "can't alloc capture dma buffer\n"); - snd_dma_free_pages(&pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->dma_buffer); - return ret; - } - } - - return 0; + return snd_pcm_set_fixed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, + card->dev, + fsl_dma_hardware.buffer_bytes_max); }
/** @@ -442,7 +419,6 @@ static int fsl_dma_open(struct snd_soc_component *component,
dma->assigned = true;
- snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); snd_soc_set_runtime_hwparams(substream, &fsl_dma_hardware); runtime->private_data = dma_private;
@@ -815,25 +791,6 @@ static int fsl_dma_close(struct snd_soc_component *component, return 0; }
-/* - * Remove this PCM driver. - */ -static void fsl_dma_free_dma_buffers(struct snd_soc_component *component, - struct snd_pcm *pcm) -{ - struct snd_pcm_substream *substream; - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(pcm->streams); i++) { - substream = pcm->streams[i].substream; - if (substream) { - snd_dma_free_pages(&substream->dma_buffer); - substream->dma_buffer.area = NULL; - substream->dma_buffer.addr = 0; - } - } -} - /** * find_ssi_node -- returns the SSI node that points to its DMA channel node * @@ -904,7 +861,6 @@ static int fsl_soc_dma_probe(struct platform_device *pdev) dma->dai.hw_free = fsl_dma_hw_free; dma->dai.pointer = fsl_dma_pointer; dma->dai.pcm_construct = fsl_dma_new; - dma->dai.pcm_destruct = fsl_dma_free_dma_buffers;
/* Store the SSI-specific information that we need */ dma->ssi_stx_phys = res.start + REG_SSI_STX0;