mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-04 08:08:54 +00:00
Code Issues Releases Wiki Activity

ASoC: fsl_dma: Use managed buffer allocation

Browse source 
This patch simplifies the buffer pre-allocation code of fsl_dma
driver with the standard managed buffer helper.  It uses the newly
introduced fixed-size buffer allocation helper.

Cc: Nicolin Chen <nicoleotsuka@gmail.com>
Cc: Xiubo Li <Xiubo.Lee@gmail.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Shengjiu Wang <shengjiu.wang@gmail.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210802072815.13551-12-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-08-02 09:28:11 +02:00
parent 1855ce6293
commit e159704f79
1 changed files with 3 additions and 47 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

50
sound/soc/fsl/fsl_dma.c
View file

@ -290,32 +290,9 @@ static int fsl_dma_new(struct snd_soc_component *component,
if (ret)
return ret;
/* Some codecs have separate DAIs for playback and capture, so we
* should allocate a DMA buffer only for the streams that are valid.
*/
if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev,
fsl_dma_hardware.buffer_bytes_max,
&pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->dma_buffer);
if (ret) {
dev_err(card->dev, "can't alloc playback dma buffer\n");
return ret;
}
}
if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev,
fsl_dma_hardware.buffer_bytes_max,
&pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->dma_buffer);
if (ret) {
dev_err(card->dev, "can't alloc capture dma buffer\n");
snd_dma_free_pages(&pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->dma_buffer);
return ret;
}
}
return 0;
return snd_pcm_set_fixed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
card->dev,
fsl_dma_hardware.buffer_bytes_max);
}
/**
@ -442,7 +419,6 @@ static int fsl_dma_open(struct snd_soc_component *component,
dma->assigned = true;
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
snd_soc_set_runtime_hwparams(substream, &fsl_dma_hardware);
runtime->private_data = dma_private;
@ -815,25 +791,6 @@ static int fsl_dma_close(struct snd_soc_component *component,
return 0;
}
/*
* Remove this PCM driver.
*/
static void fsl_dma_free_dma_buffers(struct snd_soc_component *component,
struct snd_pcm *pcm)
{
struct snd_pcm_substream *substream;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(pcm->streams); i++) {
substream = pcm->streams[i].substream;
if (substream) {
snd_dma_free_pages(&substream->dma_buffer);
substream->dma_buffer.area = NULL;
substream->dma_buffer.addr = 0;
}
}
}
/**
* find_ssi_node -- returns the SSI node that points to its DMA channel node
*
@ -904,7 +861,6 @@ static int fsl_soc_dma_probe(struct platform_device *pdev)
dma->dai.hw_free = fsl_dma_hw_free;
dma->dai.pointer = fsl_dma_pointer;
dma->dai.pcm_construct = fsl_dma_new;
dma->dai.pcm_destruct = fsl_dma_free_dma_buffers;
/* Store the SSI-specific information that we need */
dma->ssi_stx_phys = res.start + REG_SSI_STX0;