linux-kernel - [PATCH 1/2] ASoC: pcm3060: Add control for differential output

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Date:   Mon, 29 Oct 2018 09:59:12 +0100
From:   Kirill Marinushkin <kmarinushkin@...dec.tech>
To:     Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org,
        Kirill Marinushkin <kmarinushkin@...dec.tech>
Subject: [PATCH 1/2] ASoC: pcm3060: Add control for differential output

DAC may be switched between differential and single-ended output.

Signed-off-by: Kirill Marinushkin <kmarinushkin@...dec.tech>
---
 sound/soc/codecs/pcm3060.c | 9 +++++++++
 sound/soc/codecs/pcm3060.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/sound/soc/codecs/pcm3060.c b/sound/soc/codecs/pcm3060.c
index 494d9d662be8..f792ad637ae4 100644
--- a/sound/soc/codecs/pcm3060.c
+++ b/sound/soc/codecs/pcm3060.c
@@ -179,6 +179,13 @@ static struct snd_soc_dai_driver pcm3060_dai[] = {
 
 /* dapm */
 
+static const char * const pcm3060_dapm_out_dif_txt[] = {
+	"Differential", "Single-Ended"
+};
+
+static SOC_ENUM_SINGLE_DECL(pcm3060_dapm_out_dif_enum, PCM3060_REG64,
+			    PCM3060_REG_SHIFT_SE, pcm3060_dapm_out_dif_txt);
+
 static DECLARE_TLV_DB_SCALE(pcm3060_dapm_tlv, -10050, 50, 1);
 
 static const struct snd_kcontrol_new pcm3060_dapm_controls[] = {
@@ -195,6 +202,8 @@ static const struct snd_kcontrol_new pcm3060_dapm_controls[] = {
 			       0, pcm3060_dapm_tlv),
 	SOC_DOUBLE("Master Capture Switch", PCM3060_REG73,
 		   PCM3060_REG_SHIFT_MUT11, PCM3060_REG_SHIFT_MUT12, 1, 1),
+
+	SOC_ENUM("DAC Out Differential", pcm3060_dapm_out_dif_enum),
 };
 
 static const struct snd_soc_dapm_widget pcm3060_dapm_widgets[] = {
diff --git a/sound/soc/codecs/pcm3060.h b/sound/soc/codecs/pcm3060.h
index fd89a68aa8a7..32080ff00166 100644
--- a/sound/soc/codecs/pcm3060.h
+++ b/sound/soc/codecs/pcm3060.h
@@ -38,6 +38,7 @@ int pcm3060_remove(struct device *dev);
 #define PCM3060_REG_ADPSV		0x20
 #define PCM3060_REG_DAPSV		0x10
 #define PCM3060_REG_SE			0x01
+#define PCM3060_REG_SHIFT_SE		0x00
 
 #define PCM3060_REG65			0x41
 #define PCM3060_REG66			0x42
-- 
2.13.6