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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: 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/20200215014740.27580-5-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Rander Wang 2020-02-14 19:47:39 -06:00 committed by Vinod Koul
parent 973a842940
commit 5e7484d019
1 changed files with 64 additions and 0 deletions
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64
drivers/soundwire/intel.c
View File

@ -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,