Commit e2db787b authored by Yu-Hsuan Hsu's avatar Yu-Hsuan Hsu Committed by Mark Brown

ASoC: Intel: kbl_rt5663_rt5514_max98927: Add dmic format constraint

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: default avatarYu-Hsuan Hsu <yuhsuan@chromium.org>
Acked-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190923162940.199580-1-yuhsuan@chromium.orgSigned-off-by: default avatarMark Brown <broonie@kernel.org>
parent 36da6763
......@@ -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);
}
......
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