mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

ASoC: dmaengine_pcm: add peripheral configuration 

The commit e7bbb7acab ("dmaengine: add peripheral configuration")
adds peripheral configuration for dma_slave_config.

This configuration is useful for some audio peripherals, for
example, the peripheral supports multi fifos, we can
let the DMA know which fifos are selected. So also add
this configuration for snd_dmaengine_dai_dma_data.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1612509985-11063-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shengjiu Wang 2021-02-05 15:26:25 +08:00 committed by Mark Brown
parent b6040f9b98
commit 500c9f8c58
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/sound/dmaengine_pcm.h
View File

@ -66,6 +66,9 @@ struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream)
* @chan_name: Custom channel name to use when requesting DMA channel.
* @fifo_size: FIFO size of the DAI controller in bytes
* @flags: PCM_DAI flags, only SND_DMAENGINE_PCM_DAI_FLAG_PACK for now
* @peripheral_config: peripheral configuration for programming peripheral
* for dmaengine transfer
* @peripheral_size: peripheral configuration buffer size
*/
struct snd_dmaengine_dai_dma_data {
dma_addr_t addr;
@ -76,6 +79,8 @@ struct snd_dmaengine_dai_dma_data {
const char *chan_name;
unsigned int fifo_size;
unsigned int flags;
void *peripheral_config;
size_t peripheral_size;
};
void snd_dmaengine_pcm_set_config_from_dai_data(

2
sound/core/pcm_dmaengine.c
View File

@ -125,6 +125,8 @@ void snd_dmaengine_pcm_set_config_from_dai_data(
}
slave_config->slave_id = dma_data->slave_id;
slave_config->peripheral_config = dma_data->peripheral_config;
slave_config->peripheral_size = dma_data->peripheral_size;
}
EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_set_config_from_dai_data);