ASoC: amd: Use managed buffer allocation

Clean up the drivers with the new managed buffer allocation API.
The superfluous snd_pcm_lib_malloc_pages() and
snd_pcm_lib_free_pages() calls are dropped.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20191210142614.19405-2-tiwai@suse.deSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/amd/acp-pcm-dma.c

@@ -836,7 +836,6 @@ static int acp_dma_hw_params(struct snd_soc_component *component,
 			     struct snd_pcm_substream *substream,
 			     struct snd_pcm_hw_params *params)
 {
-	int status;
 	uint64_t size;
 	u32 val = 0;
 	struct snd_pcm_runtime *runtime;
@@ -967,13 +966,7 @@ static int acp_dma_hw_params(struct snd_soc_component *component,
 	}
 
 	size = params_buffer_bytes(params);
-	status = snd_pcm_lib_malloc_pages(substream, size);
-	if (status < 0)
-		return status;
-
-	memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
 
-	if (substream->dma_buffer.area) {
 	acp_set_sram_bank_state(rtd->acp_mmio, 0, true);
 	/* Save for runtime private data */
 	rtd->dma_addr = substream->dma_buffer.addr;
@@ -985,17 +978,7 @@ static int acp_dma_hw_params(struct snd_soc_component *component,
 	rtd->direction = substream->stream;
 
 	config_acp_dma(rtd->acp_mmio, rtd, adata->asic_type);
-		status = 0;
-	} else {
-		status = -ENOMEM;
-	}
-	return status;
-}
-
-static int acp_dma_hw_free(struct snd_soc_component *component,
-			   struct snd_pcm_substream *substream)
-{
-	return snd_pcm_lib_free_pages(substream);
+	return 0;
 }
 
 static u64 acp_get_byte_count(struct audio_substream_data *rtd)
@@ -1142,14 +1125,14 @@ static int acp_dma_new(struct snd_soc_component *component,
 
 	switch (adata->asic_type) {
 	case CHIP_STONEY:
-		snd_pcm_lib_preallocate_pages_for_all(rtd->pcm,
+		snd_pcm_set_managed_buffer_all(rtd->pcm,
 					       SNDRV_DMA_TYPE_DEV,
 					       parent,
 					       ST_MIN_BUFFER,
 					       ST_MAX_BUFFER);
 		break;
 	default:
-		snd_pcm_lib_preallocate_pages_for_all(rtd->pcm,
+		snd_pcm_set_managed_buffer_all(rtd->pcm,
 					       SNDRV_DMA_TYPE_DEV,
 					       parent,
 					       MIN_BUFFER,
@@ -1221,7 +1204,6 @@ static const struct snd_soc_component_driver acp_asoc_platform = {
 	.close		= acp_dma_close,
 	.ioctl		= snd_soc_pcm_lib_ioctl,
 	.hw_params	= acp_dma_hw_params,
-	.hw_free	= acp_dma_hw_free,
 	.trigger	= acp_dma_trigger,
 	.pointer	= acp_dma_pointer,
 	.mmap		= acp_dma_mmap,

sound/soc/amd/raven/acp3x-pcm-dma.c

@@ -334,7 +334,6 @@ static int acp3x_dma_hw_params(struct snd_soc_component *component,
 			       struct snd_pcm_substream *substream,
 			       struct snd_pcm_hw_params *params)
 {
-	int status;
 	u64 size;
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct i2s_stream_instance *rtd = runtime->private_data;
@@ -343,20 +342,10 @@ static int acp3x_dma_hw_params(struct snd_soc_component *component,
 		return -EINVAL;
 
 	size = params_buffer_bytes(params);
-	status = snd_pcm_lib_malloc_pages(substream, size);
-	if (status < 0)
-		return status;
-
-	memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
-	if (substream->dma_buffer.area) {
 	rtd->dma_addr = substream->dma_buffer.addr;
 	rtd->num_pages = (PAGE_ALIGN(size) >> PAGE_SHIFT);
 	config_acp3x_dma(rtd, substream->stream);
-		status = 0;
-	} else {
-		status = -ENOMEM;
-	}
-	return status;
+	return 0;
 }
 
 static snd_pcm_uframes_t acp3x_dma_pointer(struct snd_soc_component *component,
@@ -381,17 +370,11 @@ static int acp3x_dma_new(struct snd_soc_component *component,
 			 struct snd_soc_pcm_runtime *rtd)
 {
 	struct device *parent = component->dev->parent;
-	snd_pcm_lib_preallocate_pages_for_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,
+	snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV,
 				       parent, MIN_BUFFER, MAX_BUFFER);
 	return 0;
 }
 
-static int acp3x_dma_hw_free(struct snd_soc_component *component,
-			     struct snd_pcm_substream *substream)
-{
-	return snd_pcm_lib_free_pages(substream);
-}
-
 static int acp3x_dma_mmap(struct snd_soc_component *component,
 			  struct snd_pcm_substream *substream,
 			  struct vm_area_struct *vma)
@@ -601,7 +584,6 @@ static const struct snd_soc_component_driver acp3x_i2s_component = {
 	.close		= acp3x_dma_close,
 	.ioctl		= snd_soc_pcm_lib_ioctl,
 	.hw_params	= acp3x_dma_hw_params,
-	.hw_free	= acp3x_dma_hw_free,
 	.pointer	= acp3x_dma_pointer,
 	.mmap		= acp3x_dma_mmap,
 	.pcm_construct	= acp3x_dma_new,