From: Rander Wang rander.wang@linux.intel.com
The sdw stream is allocated and stored in dai to share the sdw runtime information.
Signed-off-by: Rander Wang rander.wang@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- drivers/soundwire/intel.c | 57 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 56 insertions(+), 1 deletion(-)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index f3764f67919e..336203303480 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -670,6 +670,58 @@ 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; + + name = kzalloc(32, GFP_KERNEL); + if (!name) + return -ENOMEM; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + snprintf(name, 32, "%s-Playback", dai->name); + else + snprintf(name, 32, "%s-Capture", dai->name); + + 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) { @@ -682,9 +734,11 @@ static int intel_startup(struct snd_pcm_substream *substream, "pm_runtime_get_sync failed in %s, ret %d\n", __func__, ret); pm_runtime_put_noidle(cdns->dev); + + return ret; }
- return ret; + return sdw_stream_setup(substream, dai); }
static int intel_hw_params(struct snd_pcm_substream *substream, @@ -885,6 +939,7 @@ 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,