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soundwire: intel: add trigger support in sdw dai driver

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The existing code does not expose a trigger callback, which is very
much required for streaming.

The SoundWire stream is enabled and disabled in trigger function.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Rander Wang <rander.wang@linux.intel.com>
Acked-by: Sanyog Kale <sanyog.r.kale@intel.com>
Link: https://lore.kernel.org/r/20200215014740.27580-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Rander Wang 2020-02-14 19:47:38 -06:00 committed by Vinod Koul
parent 27b198f409
commit 973a842940
1 changed files with 39 additions and 0 deletions
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39
drivers/soundwire/intel.c
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@ -714,6 +714,43 @@ static int intel_prepare(struct snd_pcm_substream *substream,
return sdw_prepare_stream(dma->stream);
}
static int intel_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct sdw_cdns_dma_data *dma;
int ret;
dma = snd_soc_dai_get_dma_data(dai, substream);
if (!dma) {
dev_err(dai->dev, "failed to get dma data in %s", __func__);
return -EIO;
}
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
ret = sdw_enable_stream(dma->stream);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
ret = sdw_disable_stream(dma->stream);
break;
default:
ret = -EINVAL;
break;
}
if (ret)
dev_err(dai->dev,
"%s trigger %d failed: %d",
__func__, cmd, ret);
return ret;
}
static int
intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
{
@ -761,6 +798,7 @@ static int intel_pdm_set_sdw_stream(struct snd_soc_dai *dai,
static const struct snd_soc_dai_ops intel_pcm_dai_ops = {
.hw_params = intel_hw_params,
.prepare = intel_prepare,
.trigger = intel_trigger,
.hw_free = intel_hw_free,
.shutdown = intel_shutdown,
.set_sdw_stream = intel_pcm_set_sdw_stream,
@ -769,6 +807,7 @@ static const struct snd_soc_dai_ops intel_pcm_dai_ops = {
static const struct snd_soc_dai_ops intel_pdm_dai_ops = {
.hw_params = intel_hw_params,
.prepare = intel_prepare,
.trigger = intel_trigger,
.hw_free = intel_hw_free,
.shutdown = intel_shutdown,
.set_sdw_stream = intel_pdm_set_sdw_stream,