linux-kernel - [PATCH 3/4] ASoC: tas2764: Correct playback volume range

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Message-Id: <20220630075135.2221-3-povik+lin@cutebit.org>
Date:   Thu, 30 Jun 2022 09:51:34 +0200
From:   Martin Povišer <povik+lin@...ebit.org>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     Hector Martin <marcan@...can.st>, Stephen Kitt <steve@....org>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Dan Murphy <dmurphy@...com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, asahi@...ts.linux.dev,
        Martin Povišer <povik+lin@...ebit.org>
Subject: [PATCH 3/4] ASoC: tas2764: Correct playback volume range

From: Hector Martin <marcan@...can.st>

DVC value 0xc8 is -100dB and 0xc9 is mute; this needs to map to
-100.5dB as far as the dB scale is concerned. Fix that and enable
the mute flag, so alsamixer correctly shows the control as
<0 dB .. -100 dB, mute>.

Signed-off-by: Hector Martin <marcan@...can.st>
Fixes: 827ed8a0fa50 ("ASoC: tas2764: Add the driver for the TAS2764")
Signed-off-by: Martin Povišer <povik+lin@...ebit.org>
---
 sound/soc/codecs/tas2764.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/tas2764.c b/sound/soc/codecs/tas2764.c
index 0143a55cd33c..55da1b3440e1 100644
--- a/sound/soc/codecs/tas2764.c
+++ b/sound/soc/codecs/tas2764.c
@@ -536,7 +536,7 @@ static int tas2764_codec_probe(struct snd_soc_component *component)
 }
 
 static DECLARE_TLV_DB_SCALE(tas2764_digital_tlv, 1100, 50, 0);
-static DECLARE_TLV_DB_SCALE(tas2764_playback_volume, -10000, 50, 0);
+static DECLARE_TLV_DB_SCALE(tas2764_playback_volume, -10050, 50, 1);
 
 static const struct snd_kcontrol_new tas2764_snd_controls[] = {
 	SOC_SINGLE_TLV("Speaker Volume", TAS2764_DVC, 0,
-- 
2.33.0