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Message-Id: <20221209105621.39237-1-kernel@undef.tools>
Date: Fri, 9 Dec 2022 10:56:20 +0000
From: Jarrah Gosbell <kernel@...ef.tools>
To: Oder Chiou <oder_chiou@...ltek.com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
linux-kernel@...r.kernel.org
Cc: phone-devel@...r.kernel.org, Ondrej Jirman <megi@....cz>,
Jarrah Gosbell <kernel@...ef.tools>
Subject: [PATCH 1/2] ASoC: rt5640: Allow configuration of LOUT to mono differential mode
From: Ondrej Jirman <megi@....cz>
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@....cz>
Signed-off-by: Jarrah Gosbell <kernel@...ef.tools>
---
sound/soc/codecs/rt5640.c | 4 ++++
sound/soc/codecs/rt5640.h | 2 ++
2 files changed, 6 insertions(+)
diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index 0f8e6dd214b0..18e01949f20e 100644
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -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;
diff --git a/sound/soc/codecs/rt5640.h b/sound/soc/codecs/rt5640.h
index f58b88e3325b..9847a1ae01f4 100644
--- a/sound/soc/codecs/rt5640.h
+++ b/sound/soc/codecs/rt5640.h
@@ -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)
--
2.35.1
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