Unverified Commit 44b54f54 authored Dec 09, 2022 by Ondrej Jirman Committed by Mark Brown Dec 25, 2022

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



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>

parent a5c26ee5

sound/soc/codecs/rt5640.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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;

sound/soc/codecs/rt5640.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -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)