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From: Brent Lu <brent.lu@intel.com>
To: alsa-devel@alsa-project.org
Cc: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>,
	Cezary Rojewski <cezary.rojewski@intel.com>,
	Kai Vehmanen <kai.vehmanen@linux.intel.com>,
	Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
	linux-kernel@vger.kernel.org, Takashi Iwai <tiwai@suse.com>,
	Jie Yang <yang.jie@linux.intel.com>,
	Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
	Liam Girdwood <liam.r.girdwood@linux.intel.com>,
	Sam McNally <sammc@chromium.org>, Mark Brown <broonie@kernel.org>,
	Ranjani Sridharan <ranjani.sridharan@linux.intel.com>,
	Yu-Hsuan Hsu <yuhsuan@chromium.org>,
	Daniel Stuart <daniel.stuart14@gmail.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Brent Lu <brent.lu@intel.com>,
	Damian van Soelen <dj.vsoelen@gmail.com>
Subject: [PATCH v2 2/2] ASoC: Intel: Add period size constraint on strago board
Date: Thu, 30 Jul 2020 16:13:35 +0800	[thread overview]
Message-ID: <1596096815-32043-3-git-send-email-brent.lu@intel.com> (raw)
In-Reply-To: <1596096815-32043-1-git-send-email-brent.lu@intel.com>

From: Yu-Hsuan Hsu <yuhsuan@chromium.org>

The CRAS server does not set the period size in hw_param so ALSA will
calculate a value for period size which is based on the buffer size
and other parameters. The value may not always be aligned with Atom's
dsp design so a constraint is added to make sure the board always has
a good value.

Cyan uses chtmax98090 and others(banon, celes, edgar, kefka...) use
rt5650.

Signed-off-by: Yu-Hsuan Hsu <yuhsuan@chromium.org>
Signed-off-by: Brent Lu <brent.lu@intel.com>
---
 sound/soc/intel/boards/cht_bsw_max98090_ti.c | 14 +++++++++++++-
 sound/soc/intel/boards/cht_bsw_rt5645.c      | 14 +++++++++++++-
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/sound/soc/intel/boards/cht_bsw_max98090_ti.c b/sound/soc/intel/boards/cht_bsw_max98090_ti.c
index 835e9bd..bf67254 100644
--- a/sound/soc/intel/boards/cht_bsw_max98090_ti.c
+++ b/sound/soc/intel/boards/cht_bsw_max98090_ti.c
@@ -283,8 +283,20 @@ static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 
 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 {
-	return snd_pcm_hw_constraint_single(substream->runtime,
+	int err;
+
+	/* Set period size to 240 to align with Atom design */
+	err = snd_pcm_hw_constraint_minmax(substream->runtime,
+			SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 240, 240);
+	if (err < 0)
+		return err;
+
+	err = snd_pcm_hw_constraint_single(substream->runtime,
 			SNDRV_PCM_HW_PARAM_RATE, 48000);
+	if (err < 0)
+		return err;
+
+	return 0;
 }
 
 static int cht_max98090_headset_init(struct snd_soc_component *component)
diff --git a/sound/soc/intel/boards/cht_bsw_rt5645.c b/sound/soc/intel/boards/cht_bsw_rt5645.c
index b53c024..6e62f0d 100644
--- a/sound/soc/intel/boards/cht_bsw_rt5645.c
+++ b/sound/soc/intel/boards/cht_bsw_rt5645.c
@@ -414,8 +414,20 @@ static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 
 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 {
-	return snd_pcm_hw_constraint_single(substream->runtime,
+	int err;
+
+	/* Set period size to 240 to align with Atom design */
+	err = snd_pcm_hw_constraint_minmax(substream->runtime,
+			SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 240, 240);
+	if (err < 0)
+		return err;
+
+	err = snd_pcm_hw_constraint_single(substream->runtime,
 			SNDRV_PCM_HW_PARAM_RATE, 48000);
+	if (err < 0)
+		return err;
+
+	return 0;
 }
 
 static const struct snd_soc_ops cht_aif1_ops = {
-- 
2.7.4


  parent reply	other threads:[~2020-07-30  8:20 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-30  8:13 [PATCH v2 0/2] Add period size constraint for Atom Chromebook Brent Lu
2020-07-30  8:13 ` [PATCH v2 1/2] ASoC: intel: atom: Add period size constraint Brent Lu
2020-07-30  8:13 ` Brent Lu [this message]
2020-07-30  8:42   ` [PATCH v2 2/2] ASoC: Intel: Add period size constraint on strago board Andy Shevchenko
2020-07-30 13:23     ` Lu, Brent
2020-07-30 13:49       ` Andy Shevchenko
2020-07-30  8:41 ` [PATCH v2 0/2] Add period size constraint for Atom Chromebook Andy Shevchenko
2020-07-30 15:03 ` Takashi Iwai
2020-07-30 15:25   ` Lu, Brent

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