There is no point in having local allocation functions when the driver can use snd_dma_alloc/free() apis. This patch replaces the local versions of the dma allocation apis with the snd_dma_alloc/free() apis.
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- sound/soc/qcom/lpass-platform.c | 42 ++++++----------------------------------- 1 file changed, 6 insertions(+), 36 deletions(-)
diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c index 4aeb8e1..ec2414d 100644 --- a/sound/soc/qcom/lpass-platform.c +++ b/sound/soc/qcom/lpass-platform.c @@ -439,39 +439,6 @@ static irqreturn_t lpass_platform_lpaif_irq(int irq, void *data) return IRQ_HANDLED; }
-static int lpass_platform_alloc_buffer(struct snd_pcm_substream *substream, - struct snd_soc_pcm_runtime *rt) -{ - struct snd_dma_buffer *buf = &substream->dma_buffer; - size_t size = lpass_platform_pcm_hardware.buffer_bytes_max; - - buf->dev.type = SNDRV_DMA_TYPE_DEV; - buf->dev.dev = rt->platform->dev; - buf->private_data = NULL; - buf->area = dma_alloc_coherent(rt->platform->dev, size, &buf->addr, - GFP_KERNEL); - if (!buf->area) { - dev_err(rt->platform->dev, "%s: Could not allocate DMA buffer\n", - __func__); - return -ENOMEM; - } - buf->bytes = size; - - return 0; -} - -static void lpass_platform_free_buffer(struct snd_pcm_substream *substream, - struct snd_soc_pcm_runtime *rt) -{ - struct snd_dma_buffer *buf = &substream->dma_buffer; - - if (buf->area) { - dma_free_coherent(rt->dev, buf->bytes, buf->area, - buf->addr); - } - buf->area = NULL; -} - static int lpass_platform_pcm_new(struct snd_soc_pcm_runtime *soc_runtime) { struct snd_pcm *pcm = soc_runtime->pcm; @@ -483,6 +450,7 @@ static int lpass_platform_pcm_new(struct snd_soc_pcm_runtime *soc_runtime) struct lpass_variant *v = drvdata->variant; int ret; struct lpass_pcm_data *data; + size_t size = lpass_platform_pcm_hardware.buffer_bytes_max;
data = devm_kzalloc(soc_runtime->dev, sizeof(*data), GFP_KERNEL); if (!data) @@ -499,7 +467,9 @@ static int lpass_platform_pcm_new(struct snd_soc_pcm_runtime *soc_runtime)
snd_soc_pcm_set_drvdata(soc_runtime, data);
- ret = lpass_platform_alloc_buffer(substream, soc_runtime); + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, + soc_runtime->platform->dev, + size, &substream->dma_buffer); if (ret) return ret;
@@ -514,7 +484,7 @@ static int lpass_platform_pcm_new(struct snd_soc_pcm_runtime *soc_runtime) return 0;
err_buf: - lpass_platform_free_buffer(substream, soc_runtime); + snd_dma_free_pages(&substream->dma_buffer); return ret; }
@@ -533,7 +503,7 @@ static void lpass_platform_pcm_free(struct snd_pcm *pcm) if (v->free_dma_channel) v->free_dma_channel(drvdata, data->rdma_ch);
- lpass_platform_free_buffer(substream, soc_runtime); + snd_dma_free_pages(&substream->dma_buffer); }
static struct snd_soc_platform_driver lpass_platform_driver = {