[PATCH v2 07/14] ASoC: sun4i-codec: Add support for A31 Line In playback - Chen-Yu Tsai

From: Chen-Yu Tsai <wens@csie.org>
To: Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>,
	Takashi Iwai <tiwai@suse.com>,
	Maxime Ripard <maxime.ripard@free-electrons.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>
Cc: Chen-Yu Tsai <wens@csie.org>,
	alsa-devel@alsa-project.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	linux-sunxi@googlegroups.com
Subject: [PATCH v2 07/14] ASoC: sun4i-codec: Add support for A31 Line In playback
Date: Thu,  3 Nov 2016 15:55:49 +0800	[thread overview]
Message-ID: <20161103075556.29018-8-wens@csie.org> (raw)
In-Reply-To: <20161103075556.29018-1-wens@csie.org>

The A31 integrated codec has a stereo "Line In" input. Add support for
it to the playback paths.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 sound/soc/sunxi/sun4i-codec.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c
index 12b9e08a3e64..4abac9962165 100644
--- a/sound/soc/sunxi/sun4i-codec.c
+++ b/sound/soc/sunxi/sun4i-codec.c
@@ -774,6 +774,10 @@ static const struct snd_kcontrol_new sun6i_codec_mixer_controls[] = {
 			SUN6I_CODEC_OM_DACA_CTRL,
 			SUN6I_CODEC_OM_DACA_CTRL_LMIX_DACR,
 			SUN6I_CODEC_OM_DACA_CTRL_RMIX_DACL, 1, 0),
+	SOC_DAPM_DOUBLE("Line In Playback Switch",
+			SUN6I_CODEC_OM_DACA_CTRL,
+			SUN6I_CODEC_OM_DACA_CTRL_LMIX_LINEINL,
+			SUN6I_CODEC_OM_DACA_CTRL_RMIX_LINEINR, 1, 0),
 };
 
 /* headphone controls */
@@ -795,6 +799,8 @@ static const struct snd_kcontrol_new sun6i_codec_hp_src[] = {
 /* volume / mute controls */
 static const DECLARE_TLV_DB_SCALE(sun6i_codec_dvol_scale, -7308, 116, 0);
 static const DECLARE_TLV_DB_SCALE(sun6i_codec_hp_vol_scale, -6300, 100, 1);
+static const DECLARE_TLV_DB_SCALE(sun6i_codec_out_mixer_pregain_scale,
+				  -450, 150, 0);
 
 static const struct snd_kcontrol_new sun6i_codec_codec_widgets[] = {
 	SOC_SINGLE_TLV("DAC Playback Volume", SUN4I_CODEC_DAC_DPC,
@@ -808,9 +814,16 @@ static const struct snd_kcontrol_new sun6i_codec_codec_widgets[] = {
 		   SUN6I_CODEC_OM_DACA_CTRL,
 		   SUN6I_CODEC_OM_DACA_CTRL_LHPPAMUTE,
 		   SUN6I_CODEC_OM_DACA_CTRL_RHPPAMUTE, 1, 0),
+	/* Mixer pre-gains */
+	SOC_SINGLE_TLV("Line In Playback Volume",
+		       SUN6I_CODEC_OM_PA_CTRL, SUN6I_CODEC_OM_PA_CTRL_LINEING,
+		       0x7, 0, sun6i_codec_out_mixer_pregain_scale),
 };
 
 static const struct snd_soc_dapm_widget sun6i_codec_codec_dapm_widgets[] = {
+	/* Line In */
+	SND_SOC_DAPM_INPUT("LINEIN"),
+
 	/* Digital parts of the DACs */
 	SND_SOC_DAPM_SUPPLY("DAC Enable", SUN4I_CODEC_DAC_DPC,
 			    SUN4I_CODEC_DAC_DPC_EN_DA, 0,
@@ -852,10 +865,12 @@ static const struct snd_soc_dapm_route sun6i_codec_codec_dapm_routes[] = {
 	/* Left Mixer Routes */
 	{ "Left Mixer", "DAC Playback Switch", "Left DAC" },
 	{ "Left Mixer", "DAC Reversed Playback Switch", "Right DAC" },
+	{ "Left Mixer", "Line In Playback Switch", "LINEIN" },
 
 	/* Right Mixer Routes */
 	{ "Right Mixer", "DAC Playback Switch", "Right DAC" },
 	{ "Right Mixer", "DAC Reversed Playback Switch", "Left DAC" },
+	{ "Right Mixer", "Line In Playback Switch", "LINEIN" },
 
 	/* Headphone Routes */
 	{ "Headphone Source Playback Route", "DAC", "Left DAC" },
-- 
2.10.2
