Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Yu-Hsuan Hsu <yuhsuan@chromium.org>
To:     linux-kernel@vger.kernel.org
Cc:     Cezary Rojewski <cezary.rojewski@intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
        Liam Girdwood <liam.r.girdwood@linux.intel.com>,
        Jie Yang <yang.jie@linux.intel.com>,
        Mark Brown <broonie@kernel.org>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
        Tzung-Bi Shih <tzungbi@google.com>,
        Yu-Hsuan Hsu <yuhsuan@chromium.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        alsa-devel@alsa-project.org
Subject: [PATCH] ASoC: Intel: kbl_rt5663_rt5514_max98927: Add dmic format constraint
Date:   Thu, 12 Sep 2019 10:27:40 +0800
Message-Id: <20190912022740.161798-1-yuhsuan@chromium.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

24 bits recording from DMIC is not supported for KBL platform because
the TDM slot between PCH and codec is 16 bits only. We should add a
constraint to remove that unsupported format.

Signed-off-by: Yu-Hsuan Hsu <yuhsuan@chromium.org>
---
 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 74dda8784f1a01..67b276a65a8d2d 100644
--- a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
+++ b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c
@@ -400,6 +400,9 @@ 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);
 }
-- 
2.23.0.162.g0b9fbb3734-goog