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Diffstat (limited to 'sound/soc/atmel/atmel-pcm-pdc.c')
-rw-r--r--sound/soc/atmel/atmel-pcm-pdc.c78
1 files changed, 4 insertions, 74 deletions
diff --git a/sound/soc/atmel/atmel-pcm-pdc.c b/sound/soc/atmel/atmel-pcm-pdc.c
index 704f700013d3..3e7ea2021b46 100644
--- a/sound/soc/atmel/atmel-pcm-pdc.c
+++ b/sound/soc/atmel/atmel-pcm-pdc.c
@@ -34,86 +34,21 @@
#include "atmel-pcm.h"
-static int atmel_pcm_preallocate_dma_buffer(struct snd_pcm *pcm,
- int stream)
-{
- struct snd_pcm_substream *substream = pcm->streams[stream].substream;
- struct snd_dma_buffer *buf = &substream->dma_buffer;
- size_t size = ATMEL_SSC_DMABUF_SIZE;
-
- buf->dev.type = SNDRV_DMA_TYPE_DEV;
- buf->dev.dev = pcm->card->dev;
- buf->private_data = NULL;
- buf->area = dma_alloc_coherent(pcm->card->dev, size,
- &buf->addr, GFP_KERNEL);
- pr_debug("atmel-pcm: alloc dma buffer: area=%p, addr=%p, size=%zu\n",
- (void *)buf->area, (void *)(long)buf->addr, size);
-
- if (!buf->area)
- return -ENOMEM;
-
- buf->bytes = size;
- return 0;
-}
-
-static int atmel_pcm_mmap(struct snd_soc_component *component,
- struct snd_pcm_substream *substream,
- struct vm_area_struct *vma)
-{
- return remap_pfn_range(vma, vma->vm_start,
- substream->dma_buffer.addr >> PAGE_SHIFT,
- vma->vm_end - vma->vm_start, vma->vm_page_prot);
-}
-
static int atmel_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;
int ret;
ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
if (ret)
return ret;
- if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
- pr_debug("atmel-pcm: allocating PCM playback DMA buffer\n");
- ret = atmel_pcm_preallocate_dma_buffer(pcm,
- SNDRV_PCM_STREAM_PLAYBACK);
- if (ret)
- goto out;
- }
+ snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,
+ card->dev, ATMEL_SSC_DMABUF_SIZE,
+ ATMEL_SSC_DMABUF_SIZE);
- if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
- pr_debug("atmel-pcm: allocating PCM capture DMA buffer\n");
- ret = atmel_pcm_preallocate_dma_buffer(pcm,
- SNDRV_PCM_STREAM_CAPTURE);
- if (ret)
- goto out;
- }
- out:
- return ret;
-}
-
-static void atmel_pcm_free(struct snd_soc_component *component,
- struct snd_pcm *pcm)
-{
- struct snd_pcm_substream *substream;
- struct snd_dma_buffer *buf;
- int stream;
-
- for (stream = 0; stream < 2; stream++) {
- substream = pcm->streams[stream].substream;
- if (!substream)
- continue;
-
- buf = &substream->dma_buffer;
- if (!buf->area)
- continue;
- dma_free_coherent(pcm->card->dev, buf->bytes,
- buf->area, buf->addr);
- buf->area = NULL;
- }
+ return 0;
}
/*--------------------------------------------------------------------------*\
@@ -210,9 +145,6 @@ static int atmel_pcm_hw_params(struct snd_soc_component *component,
/* this may get called several times by oss emulation
* with different params */
- snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
- runtime->dma_bytes = params_buffer_bytes(params);
-
prtd->params = snd_soc_dai_get_dma_data(asoc_rtd_to_cpu(rtd, 0), substream);
prtd->params->dma_intr_handler = atmel_pcm_dma_irq;
@@ -384,9 +316,7 @@ static const struct snd_soc_component_driver atmel_soc_platform = {
.prepare = atmel_pcm_prepare,
.trigger = atmel_pcm_trigger,
.pointer = atmel_pcm_pointer,
- .mmap = atmel_pcm_mmap,
.pcm_construct = atmel_pcm_new,
- .pcm_destruct = atmel_pcm_free,
};
int atmel_pcm_pdc_platform_register(struct device *dev)