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Message-Id: <20200114234257.14336-5-pierre-louis.bossart@linux.intel.com>
Date: Tue, 14 Jan 2020 17:42:56 -0600
From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To: alsa-devel@...a-project.org
Cc: linux-kernel@...r.kernel.org, tiwai@...e.de, broonie@...nel.org,
vkoul@...nel.org, gregkh@...uxfoundation.org, jank@...ence.com,
srinivas.kandagatla@...aro.org, slawomir.blauciak@...el.com,
Bard liao <yung-chuan.liao@...ux.intel.com>,
Rander Wang <rander.wang@...ux.intel.com>,
Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
Sanyog Kale <sanyog.r.kale@...el.com>
Subject: [PATCH v2 4/5] soundwire: intel: add sdw_stream_setup helper for .startup callback
From: Rander Wang <rander.wang@...ux.intel.com>
The sdw stream is allocated and stored in dai to share the sdw runtime
information.
Signed-off-by: Rander Wang <rander.wang@...ux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
---
drivers/soundwire/intel.c | 64 +++++++++++++++++++++++++++++++++++++++
1 file changed, 64 insertions(+)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 999aa2cd9fea..c498812522ab 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -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,
--
2.20.1
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