Buffers used in ASoC Intel Atom SST driver

Takashi Iwai tiwai at suse.de
Thu Aug 18 17:42:46 CEST 2022


Hi,

while cleaning up / fixing the memory allocation code, I noticed that
Intel SST driver is the only driver that currently uses the
SNDRV_DMA_TYPE_CONTINUOUS pages for its PCM buffer.

Is there any reason not to use the standard device buffer
(SNDRV_DMA_TYPE_DEV)?  i.e. the change like below.


thanks,

Takashi

-- 8< --
From: Takashi Iwai <tiwai at suse.de>
Subject: [PATCH] ASoC: Intel: sst: Switch to standard device pages

Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/soc/intel/atom/sst-mfld-platform-pcm.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
index a56dd48c045f..c75616a5fd0a 100644
--- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c
+++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
@@ -676,10 +676,9 @@ static int sst_soc_pcm_new(struct snd_soc_component *component,
 
 	if (dai->driver->playback.channels_min ||
 			dai->driver->capture.channels_min) {
-		snd_pcm_set_managed_buffer_all(pcm,
-			SNDRV_DMA_TYPE_CONTINUOUS,
-			snd_dma_continuous_data(GFP_DMA),
-			SST_MIN_BUFFER, SST_MAX_BUFFER);
+		snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
+					       pcm->card->dev,
+					       SST_MIN_BUFFER, SST_MAX_BUFFER);
 	}
 	return 0;
 }
-- 
2.35.3



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