[alsa-devel] [PATCH] ASoC: pcm: save fixed-up hw_params of BE

[libin.yang at intel.com]

From: Libin Yang <libin.yang at intel.com>

Some drivers mandate setting up hw params after resuming from system sleep.
Since, the hw_params ioctl is not invoked upon resuming, the fixed-up BE
dai hw params should be saved so the driver can use it in its resume
sequence.

Signed-off-by: Libin Yang <libin.yang at intel.com>
---
 sound/soc/soc-pcm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index d212475..7469535 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2164,6 +2164,10 @@ int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream)
 			}
 		}
 
+		/* copy the fixed-up hw params for BE dai */
+		memcpy(&be->dpcm[stream].hw_params, &dpcm->hw_params,
+		       sizeof(struct snd_pcm_hw_params));
+
 		/* only allow hw_params() if no connected FEs are running */
 		if (!snd_soc_dpcm_can_be_params(fe, be, stream))
 			continue;
-- 
2.7.4