soundwire: intel: remove stream handling from .prepare and .hw_free
Now that the stream is handled at the dai-link level (in the machine
driver), we can remove the stream handling at the dai level. We still
need these callbacks to perform dai-level resource handling
(i.e. addition/removal of a master).
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200903204739.31206-5-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 05de8c4..e047910 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -951,7 +951,7 @@ static int intel_prepare(struct snd_pcm_substream *substream,
struct sdw_intel *sdw = cdns_to_intel(cdns);
struct sdw_cdns_dma_data *dma;
int ch, dir;
- int ret;
+ int ret = 0;
dma = snd_soc_dai_get_dma_data(dai, substream);
if (!dma) {
@@ -987,13 +987,8 @@ static int intel_prepare(struct snd_pcm_substream *substream,
dma->hw_params,
sdw->instance,
dma->pdi->intel_alh_id);
- if (ret)
- goto err;
}
- ret = sdw_prepare_stream(dma->stream);
-
-err:
return ret;
}
@@ -1009,12 +1004,12 @@ intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
if (!dma)
return -EIO;
- ret = sdw_deprepare_stream(dma->stream);
- if (ret) {
- dev_err(dai->dev, "sdw_deprepare_stream: failed %d", ret);
- return ret;
- }
-
+ /*
+ * The sdw stream state will transition to RELEASED when stream->
+ * master_list is empty. So the stream state will transition to
+ * DEPREPARED for the first cpu-dai and to RELEASED for the last
+ * cpu-dai.
+ */
ret = sdw_stream_remove_master(&cdns->bus, dma->stream);
if (ret < 0) {
dev_err(dai->dev, "remove master from stream %s failed: %d\n",