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[v2,2/3] ASOC: Intel: sof_sdw: add dailink .trigger callback

Message ID 20200903204650.31098-3-yung-chuan.liao@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series ASoC: Add sdw stream operations to dailink ops. | expand

Commit Message

Bard Liao Sept. 3, 2020, 8:46 p.m. UTC 
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>

Add trigger functionality to dailink, so far only .startup() and
.shutdown() were implemented at the machine driver level.

The companion patch for this patch is the removal of the trigger
callback at the DAI level in drivers/soundwire/intel.c

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
 sound/soc/intel/boards/sof_sdw.c | 41 ++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
diff mbox series

Patch

diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c
index 2463d432bf4d..f251e046d74d 100644
--- a/sound/soc/intel/boards/sof_sdw.c
+++ b/sound/soc/intel/boards/sof_sdw.c
@@ -195,6 +195,46 @@  int sdw_startup(struct snd_pcm_substream *substream)
 	return sdw_startup_stream(substream);
 }
 
+static int sdw_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct sdw_stream_runtime *sdw_stream;
+	struct snd_soc_dai *dai;
+	int ret;
+
+	/* Find stream from first CPU DAI */
+	dai = asoc_rtd_to_cpu(rtd, 0);
+
+	sdw_stream = snd_soc_dai_get_sdw_stream(dai, substream->stream);
+
+	if (IS_ERR(sdw_stream)) {
+		dev_err(rtd->dev, "no stream found for DAI %s", dai->name);
+		return PTR_ERR(sdw_stream);
+	}
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+	case SNDRV_PCM_TRIGGER_RESUME:
+		ret = sdw_enable_stream(sdw_stream);
+		break;
+
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_STOP:
+		ret = sdw_disable_stream(sdw_stream);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	if (ret)
+		dev_err(rtd->dev, "%s trigger %d failed: %d", __func__, cmd, ret);
+
+	return ret;
+}
+
 void sdw_shutdown(struct snd_pcm_substream *substream)
 {
 	sdw_shutdown_stream(substream);
@@ -202,6 +242,7 @@  void sdw_shutdown(struct snd_pcm_substream *substream)
 
 static const struct snd_soc_ops sdw_ops = {
 	.startup = sdw_startup,
+	.trigger = sdw_trigger,
 	.shutdown = sdw_shutdown,
 };