There are currently two ways to specify custom DMA channel names:
- through the SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag and
snd_dmaengine_dai_dma_data data structure,
- through chan_names field of struct snd_dmaengine_pcm_config.
In order to replace the DAI DMA data method with the custom DMA config
one on non-DT platforms the dmaengine_pcm_new() function is extended
to also consider channel names specified in the custom DMA config.
If both config->chan_names and dma_data->chan_name are provided
the former will be used.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
---
sound/soc/soc-generic-dmaengine-pcm.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index 6d7638c1233d..1b44e363c50c 100644
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -288,9 +288,16 @@ static int dmaengine_pcm_new(struct snd_soc_pcm_runtime *rtd)
dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
if (!pcm->chan[i] &&
- (pcm->flags & SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME))
+ ((pcm->flags & SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME) ||
+ (config && config->chan_names[i]))) {
+ const char *chan_name = dma_data->chan_name;
+
+ if (config && config->chan_names[i])
+ chan_name = config->chan_names[i];
+
pcm->chan[i] = dma_request_slave_channel(dev,
- dma_data->chan_name);
+ chan_name);
+ }
if (!pcm->chan[i] && (pcm->flags & SND_DMAENGINE_PCM_FLAG_COMPAT)) {
pcm->chan[i] = dmaengine_pcm_compat_request_channel(rtd,
--
2.20.1
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