linux-kernel - [PATCH 3/5] soundwire: intel: remove stream allocation/free

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Message-Id: <20200622212332.16277-4-yung-chuan.liao@linux.intel.com>
Date:   Tue, 23 Jun 2020 05:23:30 +0800
From:   Bard Liao <yung-chuan.liao@...ux.intel.com>
To:     alsa-devel@...a-project.org, vkoul@...nel.org
Cc:     vinod.koul@...aro.org, linux-kernel@...r.kernel.org, tiwai@...e.de,
        broonie@...nel.org, gregkh@...uxfoundation.org, jank@...ence.com,
        srinivas.kandagatla@...aro.org, rander.wang@...ux.intel.com,
        ranjani.sridharan@...ux.intel.com, hui.wang@...onical.com,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        slawomir.blauciak@...el.com, mengdong.lin@...el.com,
        bard.liao@...el.com
Subject: [PATCH 3/5] soundwire: intel: remove stream allocation/free

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

To support streaming across multiple links, the stream allocation/free
needs to be at the dailink level, not the dai.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
 drivers/soundwire/intel.c | 57 +--------------------------------------
 1 file changed, 1 insertion(+), 56 deletions(-)

diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 861beb785171..72ba3d22daf9 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -804,57 +804,6 @@ 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(asoc_rtd_to_codec(rtd, i), sdw_stream,
-						 substream->stream);
-		if (ret < 0) {
-			dev_err(dai->dev, "failed to set stream pointer on codec dai %s",
-				asoc_rtd_to_codec(rtd, 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)
 {
@@ -862,8 +811,7 @@ static int intel_startup(struct snd_pcm_substream *substream,
 	 * TODO: add pm_runtime support here, the startup callback
 	 * will make sure the IP is 'active'
 	 */
-
-	return sdw_stream_setup(substream, dai);
+	return 0;
 }
 
 static int intel_hw_params(struct snd_pcm_substream *substream,
@@ -1031,9 +979,6 @@ intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 		return ret;
 	}
 
-	kfree(dma->stream->name);
-	sdw_release_stream(dma->stream);
-
 	return 0;
 }
 
-- 
2.17.1