Commit 5e7484d0 authored by Rander Wang's avatar Rander Wang Committed by Vinod Koul
Browse files

soundwire: intel: add sdw_stream_setup helper for .startup callback 



The sdw stream is allocated and stored in dai to share the sdw runtime
information.

Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: default avatarRander Wang <rander.wang@linux.intel.com>
Acked-by: default avatarSanyog Kale <sanyog.r.kale@intel.com>
Link: https://lore.kernel.org/r/20200215014740.27580-5-pierre-louis.bossart@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 973a8429

drivers/soundwire/intel.c

+64 −0
Original line number Diff line number Diff line
@@ -617,6 +617,68 @@ static int intel_post_bank_switch(struct sdw_bus *bus) 
 * DAI routines

 */



static int sdw_stream_setup(struct snd_pcm_substream *substream,

			    struct snd_soc_dai *dai)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct sdw_stream_runtime *sdw_stream = NULL;

	char *name;

	int i, ret;



	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)

		name = kasprintf(GFP_KERNEL, "%s-Playback", dai->name);

	else

		name = kasprintf(GFP_KERNEL, "%s-Capture", dai->name);



	if (!name)

		return -ENOMEM;



	sdw_stream = sdw_alloc_stream(name);

	if (!sdw_stream) {

		dev_err(dai->dev, "alloc stream failed for DAI %s", dai->name);

		ret = -ENOMEM;

		goto error;

	}



	/* Set stream pointer on CPU DAI */

	ret = snd_soc_dai_set_sdw_stream(dai, sdw_stream, substream->stream);

	if (ret < 0) {

		dev_err(dai->dev, "failed to set stream pointer on cpu dai %s",

			dai->name);

		goto release_stream;

	}



	/* Set stream pointer on all CODEC DAIs */

	for (i = 0; i < rtd->num_codecs; i++) {

		ret = snd_soc_dai_set_sdw_stream(rtd->codec_dais[i], sdw_stream,

						 substream->stream);

		if (ret < 0) {

			dev_err(dai->dev, "failed to set stream pointer on codec dai %s",

				rtd->codec_dais[i]->name);

			goto release_stream;

		}

	}



	return 0;



release_stream:

	sdw_release_stream(sdw_stream);

error:

	kfree(name);

	return ret;

}



static int intel_startup(struct snd_pcm_substream *substream,

			 struct snd_soc_dai *dai)

{

	/*

	 * TODO: add pm_runtime support here, the startup callback

	 * will make sure the IP is 'active'

	 */



	return sdw_stream_setup(substream, dai);

}



static int intel_hw_params(struct snd_pcm_substream *substream,

			   struct snd_pcm_hw_params *params,

			   struct snd_soc_dai *dai)
@@ -796,6 +858,7 @@ static int intel_pdm_set_sdw_stream(struct snd_soc_dai *dai, 
}



static const struct snd_soc_dai_ops intel_pcm_dai_ops = {

	.startup = intel_startup,

	.hw_params = intel_hw_params,

	.prepare = intel_prepare,

	.trigger = intel_trigger,
@@ -805,6 +868,7 @@ static const struct snd_soc_dai_ops intel_pcm_dai_ops = { 
};



static const struct snd_soc_dai_ops intel_pdm_dai_ops = {

	.startup = intel_startup,

	.hw_params = intel_hw_params,

	.prepare = intel_prepare,

	.trigger = intel_trigger,