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* [PATCH 1/2] ASoC: Intel: Skylake: Add channel constraints for refcap
@ 2016-05-17 16:43 Yong Zhi
  2016-05-17 16:43 ` [PATCH 2/2] ASoC: Intel: Skylake: Use refcap device for mono recording Yong Zhi
  2016-05-19  3:39 ` [PATCH 1/2] ASoC: Intel: Skylake: Add channel constraints for refcap Vinod Koul
  0 siblings, 2 replies; 3+ messages in thread
From: Yong Zhi @ 2016-05-17 16:43 UTC (permalink / raw)
  To: broonie
  Cc: alsa-devel, benzh, vinod.koul, marc.herbert, yang.a.fang,
	sathya.prakash.m.r, jeeja.kp, vedang.patel, Yong Zhi

Add constraint for ref DMIC to match with the
topology firmware config.

Signed-off-by: Yong Zhi <yong.zhi@intel.com>
---
 sound/soc/intel/boards/skl_nau88l25_max98357a.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/sound/soc/intel/boards/skl_nau88l25_max98357a.c b/sound/soc/intel/boards/skl_nau88l25_max98357a.c
index 7cc7251..463f0e5 100644
--- a/sound/soc/intel/boards/skl_nau88l25_max98357a.c
+++ b/sound/soc/intel/boards/skl_nau88l25_max98357a.c
@@ -339,8 +339,22 @@ static struct snd_pcm_hw_constraint_list constraints_16000 = {
 	.list  = rates_16000,
 };
 
+static const unsigned int ch_mono[] = {
+	1,
+};
+
+static const struct snd_pcm_hw_constraint_list constraints_refcap = {
+	.count = ARRAY_SIZE(ch_mono),
+	.list  = ch_mono,
+};
+
 static int skylake_refcap_startup(struct snd_pcm_substream *substream)
 {
+	substream->runtime->hw.channels_max = 1;
+	snd_pcm_hw_constraint_list(substream->runtime, 0,
+					SNDRV_PCM_HW_PARAM_CHANNELS,
+					&constraints_refcap);
+
 	return snd_pcm_hw_constraint_list(substream->runtime, 0,
 				SNDRV_PCM_HW_PARAM_RATE,
 				&constraints_16000);
-- 
1.9.1

^ permalink raw reply related	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2016-05-19  3:33 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2016-05-17 16:43 [PATCH 1/2] ASoC: Intel: Skylake: Add channel constraints for refcap Yong Zhi
2016-05-17 16:43 ` [PATCH 2/2] ASoC: Intel: Skylake: Use refcap device for mono recording Yong Zhi
2016-05-19  3:39 ` [PATCH 1/2] ASoC: Intel: Skylake: Add channel constraints for refcap Vinod Koul

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