[alsa-devel] [PATCH for-5.6 11/23] ASoC: SOF: Use managed buffer allocation

[Takashi Iwai]

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.

Cc: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Cc: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/soc/sof/pcm.c | 34 ++++++++++------------------------
 1 file changed, 10 insertions(+), 24 deletions(-)

diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c
index 549238a98b2a..80081ea42566 100644
--- a/sound/soc/sof/pcm.c
+++ b/sound/soc/sof/pcm.c
@@ -119,20 +119,8 @@ static int sof_pcm_hw_params(struct snd_soc_component *component,
 
 	memset(&pcm, 0, sizeof(pcm));
 
-	/* allocate audio buffer pages */
-	ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
-	if (ret < 0) {
-		dev_err(sdev->dev, "error: could not allocate %d bytes for PCM %d\n",
-			params_buffer_bytes(params), spcm->pcm.pcm_id);
-		return ret;
-	}
-	if (ret) {
-		/*
-		 * ret == 1 means the buffer is changed
-		 * create compressed page table for audio firmware
-		 * ret == 0 means the buffer is not changed
-		 * so no need to regenerate the page table
-		 */
+	/* create compressed page table for audio firmware */
+	if (runtime->buffer_changed) {
 		ret = create_page_table(component, substream, runtime->dma_area,
 					runtime->dma_bytes);
 		if (ret < 0)
@@ -260,8 +248,6 @@ static int sof_pcm_hw_free(struct snd_soc_component *component,
 			err = ret;
 	}
 
-	snd_pcm_lib_free_pages(substream);
-
 	cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work);
 
 	ret = snd_sof_pcm_platform_hw_free(sdev, substream);
@@ -594,10 +580,10 @@ static int sof_pcm_new(struct snd_soc_component *component,
 	dev_dbg(sdev->dev, "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n",
 		caps->name, caps->buffer_size_min, caps->buffer_size_max);
 
-	snd_pcm_lib_preallocate_pages(pcm->streams[stream].substream,
-				      SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
-				      le32_to_cpu(caps->buffer_size_min),
-				      le32_to_cpu(caps->buffer_size_max));
+	snd_pcm_set_managed_buffer(pcm->streams[stream].substream,
+				   SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
+				   le32_to_cpu(caps->buffer_size_min),
+				   le32_to_cpu(caps->buffer_size_max));
 capture:
 	stream = SNDRV_PCM_STREAM_CAPTURE;
 
@@ -611,10 +597,10 @@ static int sof_pcm_new(struct snd_soc_component *component,
 	dev_dbg(sdev->dev, "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n",
 		caps->name, caps->buffer_size_min, caps->buffer_size_max);
 
-	snd_pcm_lib_preallocate_pages(pcm->streams[stream].substream,
-				      SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
-				      le32_to_cpu(caps->buffer_size_min),
-				      le32_to_cpu(caps->buffer_size_max));
+	snd_pcm_set_managed_buffer(pcm->streams[stream].substream,
+				   SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
+				   le32_to_cpu(caps->buffer_size_min),
+				   le32_to_cpu(caps->buffer_size_max));
 
 	return 0;
 }
-- 
2.16.4