From e2db787bdcb4f2722ecf410168f0583764634e45 Mon Sep 17 00:00:00 2001
From: Yu-Hsuan Hsu <yuhsuan@chromium.org>
Date: Tue, 24 Sep 2019 00:29:40 +0800
Subject: [PATCH] ASoC: Intel: kbl_rt5663_rt5514_max98927: Add dmic format constraint
Git-commit: e2db787bdcb4f2722ecf410168f0583764634e45
Patch-mainline: v5.5-rc1
References: jsc#SLE-16518
On KBL platform, the microphone is attached to external codec(rt5514)
instead of PCH. However, TDM slot between PCH and codec is 16 bits only.
In order to avoid setting wrong format, we should add a constraint to
force to use 16 bits format forever.
Signed-off-by: Yu-Hsuan Hsu <yuhsuan@chromium.org>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190923162940.199580-1-yuhsuan@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
index a1056cda3dd7..3e5f6bead229 100644
--- a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
+++ b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
@@ -465,6 +465,9 @@ static int kabylake_dmic_startup(struct snd_pcm_substream *substream)
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
dmic_constraints);
+ runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
+ snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16);
+
return snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
}
--
2.16.4