diff options
Diffstat (limited to 'sound/soc/soc-generic-dmaengine-pcm.c')
| -rw-r--r-- | sound/soc/soc-generic-dmaengine-pcm.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index 1cb3494cf278..5b70c556fba3 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -288,7 +288,7 @@ static const char * const dmaengine_pcm_dma_channel_names[] = { }; static void dmaengine_pcm_request_chan_of(struct dmaengine_pcm *pcm, - struct device *dev) + struct device *dev, const struct snd_dmaengine_pcm_config *config) { unsigned int i; const char *name; @@ -298,12 +298,26 @@ static void dmaengine_pcm_request_chan_of(struct dmaengine_pcm *pcm, !dev->of_node) return; + if (config->dma_dev) { + /* + * If this warning is seen, it probably means that your Linux + * device structure does not match your HW device structure. + * It would be best to refactor the Linux device structure to + * correctly match the HW structure. + */ + dev_warn(dev, "DMA channels sourced from device %s", + dev_name(config->dma_dev)); + dev = config->dma_dev; + } + for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE; i++) { if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) name = "rx-tx"; else name = dmaengine_pcm_dma_channel_names[i]; + if (config->chan_names[i]) + name = config->chan_names[i]; pcm->chan[i] = dma_request_slave_channel(dev, name); if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) break; @@ -346,7 +360,7 @@ int snd_dmaengine_pcm_register(struct device *dev, pcm->config = config; pcm->flags = flags; - dmaengine_pcm_request_chan_of(pcm, dev); + dmaengine_pcm_request_chan_of(pcm, dev, config); if (flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE) ret = snd_soc_add_platform(dev, &pcm->platform, |