ASoC: tas2764: Fix amp gain register offset & default

[ Upstream commit 1c4f29ec878bbf1cc0a1eb54ae7da5ff98e19641 ]

The register default is 0x28 per the datasheet, and the amp gain field
is supposed to be shifted left by one. With the wrong default, the ALSA
controls lie about the power-up state. With the wrong shift, we get only
half the gain we expect.

Signed-off-by: Hector Martin <marcan@marcan.st>
Fixes: 827ed8a0fa50 ("ASoC: tas2764: Add the driver for the TAS2764")
Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
Link: https://lore.kernel.org/r/20220630075135.2221-4-povik+lin@cutebit.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/codecs/tas2764.c b/sound/soc/codecs/tas2764.c
index 33d7ce78aced71cca3db449e3e5ebf5c62e87cfe..37588804a6b5f37e077c0ec4ad809358385dda3a 100644 (file)
--- a/sound/soc/codecs/tas2764.c
+++ b/sound/soc/codecs/tas2764.c
@@ -541,7 +541,7 @@ 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,
                       TAS2764_DVC_MAX, 1, tas2764_playback_volume),
-       SOC_SINGLE_TLV("Amp Gain Volume", TAS2764_CHNL_0, 0, 0x14, 0,
+       SOC_SINGLE_TLV("Amp Gain Volume", TAS2764_CHNL_0, 1, 0x14, 0,
                       tas2764_digital_tlv),
 };
 
@@ -566,7 +566,7 @@ static const struct reg_default tas2764_reg_defaults[] = {
        { TAS2764_SW_RST, 0x00 },
        { TAS2764_PWR_CTRL, 0x1a },
        { TAS2764_DVC, 0x00 },
-       { TAS2764_CHNL_0, 0x00 },
+       { TAS2764_CHNL_0, 0x28 },
        { TAS2764_TDM_CFG0, 0x09 },
        { TAS2764_TDM_CFG1, 0x02 },
        { TAS2764_TDM_CFG2, 0x0a },