ASoC: qcom: use snd_dma_alloc/free* apis

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>

diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c
index 4aeb8e1a7160b812a6ab119cfec657b9f55b16cb..a6dce1bc67f749672f7e6b2eefe8544c75405bc3 100644 (file)
--- 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 +467,8 @@ 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, pcm->card->dev,
+                               size, &substream->dma_buffer);
        if (ret)
                return ret;
 
@@ -514,7 +483,7 @@ 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 +502,7 @@ 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 = {