This patch simplifies the buffer pre-allocation code of sprd driver with the standard managed buffer helper. It uses the newly introduced fixed-size buffer allocation helper.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/soc/sprd/sprd-pcm-dma.c | 67 ++--------------------------------- 1 file changed, 3 insertions(+), 64 deletions(-)
diff --git a/sound/soc/sprd/sprd-pcm-dma.c b/sound/soc/sprd/sprd-pcm-dma.c index 5e3a96d4793c..48d90616b23f 100644 --- a/sound/soc/sprd/sprd-pcm-dma.c +++ b/sound/soc/sprd/sprd-pcm-dma.c @@ -204,8 +204,6 @@ static int sprd_pcm_hw_params(struct snd_soc_component *component, if (!dma_params) { dev_warn(component->dev, "no dma parameters setting\n"); dma_private->params = NULL; - snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); - runtime->dma_bytes = totsize; return 0; }
@@ -217,9 +215,6 @@ static int sprd_pcm_hw_params(struct snd_soc_component *component, return ret; }
- snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); - - runtime->dma_bytes = totsize; sg_num = totsize / period; dma_private->dma_addr_offset = totsize / channels;
@@ -310,7 +305,6 @@ static int sprd_pcm_hw_params(struct snd_soc_component *component, static int sprd_pcm_hw_free(struct snd_soc_component *component, struct snd_pcm_substream *substream) { - snd_pcm_set_runtime_buffer(substream, NULL); sprd_pcm_release_dma_channel(substream);
return 0; @@ -435,73 +429,20 @@ static snd_pcm_uframes_t sprd_pcm_pointer(struct snd_soc_component *component, return x; }
-static int sprd_pcm_mmap(struct snd_soc_component *component, - struct snd_pcm_substream *substream, - struct vm_area_struct *vma) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - - vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); - return remap_pfn_range(vma, vma->vm_start, - runtime->dma_addr >> PAGE_SHIFT, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); -} - static int sprd_pcm_new(struct snd_soc_component *component, struct snd_soc_pcm_runtime *rtd) { struct snd_card *card = rtd->card->snd_card; struct snd_pcm *pcm = rtd->pcm; - struct snd_pcm_substream *substream; int ret;
ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32)); if (ret) return ret;
- substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; - if (substream) { - ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev, - sprd_pcm_hardware.buffer_bytes_max, - &substream->dma_buffer); - if (ret) { - dev_err(card->dev, - "can't alloc playback dma buffer: %d\n", ret); - return ret; - } - } - - substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; - if (substream) { - ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev, - sprd_pcm_hardware.buffer_bytes_max, - &substream->dma_buffer); - if (ret) { - dev_err(card->dev, - "can't alloc capture dma buffer: %d\n", ret); - snd_dma_free_pages(&pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->dma_buffer); - return ret; - } - } - - return 0; -} - -static void sprd_pcm_free(struct snd_soc_component *component, - struct snd_pcm *pcm) -{ - struct snd_pcm_substream *substream; - 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; - } - } + return snd_pcm_set_fixed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, + card->dev, + sprd_pcm_hardware.buffer_bytes_max); }
static const struct snd_soc_component_driver sprd_soc_component = { @@ -512,9 +453,7 @@ static const struct snd_soc_component_driver sprd_soc_component = { .hw_free = sprd_pcm_hw_free, .trigger = sprd_pcm_trigger, .pointer = sprd_pcm_pointer, - .mmap = sprd_pcm_mmap, .pcm_construct = sprd_pcm_new, - .pcm_destruct = sprd_pcm_free, .compress_ops = &sprd_platform_compress_ops, };