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ASoC: rt5640: Allow configuration of LOUT to mono differential mode

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LOUT output can produce either single-ended stereo signals, or mono
differential signal. Some applications are wired to use LOUT in mono
differential mode. Allow to configure it via device property.

Signed-off-by: Ondrej Jirman <megi@xff.cz>
Signed-off-by: Jarrah Gosbell <kernel@undef.tools>
Link: https://lore.kernel.org/r/20221209105621.39237-1-kernel@undef.tools
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Ondrej Jirman 2022-12-09 10:56:20 +00:00 committed by Mark Brown
parent a5c26ee572
commit 44b54f54b4
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GPG key ID: 24D68B725D5487D0
2 changed files with 6 additions and 0 deletions
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4
sound/soc/codecs/rt5640.c
View file

@ -2717,6 +2717,10 @@ static int rt5640_probe(struct snd_soc_component *component)
snd_soc_component_update_bits(component, RT5640_IN1_IN2,
RT5640_IN_DF2, RT5640_IN_DF2);
if (device_property_read_bool(component->dev, "realtek,lout-differential"))
snd_soc_component_update_bits(component, RT5640_DUMMY1,
RT5640_EN_LOUT_DF, RT5640_EN_LOUT_DF);
if (device_property_read_u32(component->dev, "realtek,dmic1-data-pin",
&val) == 0 && val) {
dmic1_data_pin = val - 1;

2
sound/soc/codecs/rt5640.h
View file

@ -1978,6 +1978,8 @@
#define RT5640_ZCD_HP_EN (0x1 << 15)
/* General Control 1 (0xfa) */
#define RT5640_EN_LOUT_DF (0x1 << 14)
#define RT5640_EN_LOUT_DF_SFT 14
#define RT5640_M_MONO_ADC_L (0x1 << 13)
#define RT5640_M_MONO_ADC_L_SFT 13
#define RT5640_M_MONO_ADC_R (0x1 << 12)