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authorShawn Guo <shawn.guo@linaro.org>2012-03-05 22:30:55 +0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-03-06 00:03:08 +0000
commit4762fbab0b1cf1d4f3e02b78351dc6fa59ca564e (patch)
tree08c59b48b0b3f7e24f84820683f9961e5664da90 /sound/soc/imx/imx-ssi.c
parentaf4872fb39301bbe196d0778f80d22ec51d8884b (diff)
ASoC: imx: separate imx-pcm bits from imx-ssi driver
Currently the imx-ssi.c[h] accommodates the imx-pcm common bits which are shared between imx-pcm-dma-mx2 and imx-pcm-fiq drivers. It assumes that imx-pcm-dma-mx2 and imx-pcm-fiq will always be used together with imx-ssi driver. However this becomes untrue when we see that driver sound/soc/fsl/fsl_ssi could possibly work with imx-pcm-dma-mx2 too. The patch moves the imx-pcm common bits from imx-ssi.c[h] into new files imx-pcm.c[h], and let imx-pcm-dma-mx2 and imx-pcm-fiq drivers build it in, so that imx-pcm-dma-mx2 can work with no dependency on imx-ssi driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/imx/imx-ssi.c')
-rw-r--r--sound/soc/imx/imx-ssi.c88
1 files changed, 0 insertions, 88 deletions
diff --git a/sound/soc/imx/imx-ssi.c b/sound/soc/imx/imx-ssi.c
index 25c623115a9f..9203cdd0a154 100644
--- a/sound/soc/imx/imx-ssi.c
+++ b/sound/soc/imx/imx-ssi.c
@@ -363,94 +363,6 @@ static const struct snd_soc_dai_ops imx_ssi_pcm_dai_ops = {
.trigger = imx_ssi_trigger,
};
-int snd_imx_pcm_mmap(struct snd_pcm_substream *substream,
- struct vm_area_struct *vma)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- int ret;
-
- ret = dma_mmap_writecombine(substream->pcm->card->dev, vma,
- runtime->dma_area, runtime->dma_addr, runtime->dma_bytes);
-
- pr_debug("%s: ret: %d %p 0x%08x 0x%08x\n", __func__, ret,
- runtime->dma_area,
- runtime->dma_addr,
- runtime->dma_bytes);
- return ret;
-}
-EXPORT_SYMBOL_GPL(snd_imx_pcm_mmap);
-
-static int imx_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 = IMX_SSI_DMABUF_SIZE;
-
- buf->dev.type = SNDRV_DMA_TYPE_DEV;
- buf->dev.dev = pcm->card->dev;
- buf->private_data = NULL;
- buf->area = dma_alloc_writecombine(pcm->card->dev, size,
- &buf->addr, GFP_KERNEL);
- if (!buf->area)
- return -ENOMEM;
- buf->bytes = size;
-
- return 0;
-}
-
-static u64 imx_pcm_dmamask = DMA_BIT_MASK(32);
-
-int imx_pcm_new(struct snd_soc_pcm_runtime *rtd)
-{
- struct snd_card *card = rtd->card->snd_card;
- struct snd_pcm *pcm = rtd->pcm;
- int ret = 0;
-
- if (!card->dev->dma_mask)
- card->dev->dma_mask = &imx_pcm_dmamask;
- if (!card->dev->coherent_dma_mask)
- card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
- if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
- ret = imx_pcm_preallocate_dma_buffer(pcm,
- SNDRV_PCM_STREAM_PLAYBACK);
- if (ret)
- goto out;
- }
-
- if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
- ret = imx_pcm_preallocate_dma_buffer(pcm,
- SNDRV_PCM_STREAM_CAPTURE);
- if (ret)
- goto out;
- }
-
-out:
- return ret;
-}
-EXPORT_SYMBOL_GPL(imx_pcm_new);
-
-void imx_pcm_free(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_writecombine(pcm->card->dev, buf->bytes,
- buf->area, buf->addr);
- buf->area = NULL;
- }
-}
-EXPORT_SYMBOL_GPL(imx_pcm_free);
-
static int imx_ssi_dai_probe(struct snd_soc_dai *dai)
{
struct imx_ssi *ssi = dev_get_drvdata(dai->dev);