ASoC: sun4i-codec: Add Mic Playback Volume

Add a control "Mic Playback Volume" that allows the user to control the
MIC gain stage (common for Mic1 and Mic2) leading to the output mixer.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c
index 7b965bc50042ac6ace91bb4fcc1079fcc7d99303..060a40b45ab02af6d158016f18c01c180d015a58 100644 (file)
--- a/sound/soc/sunxi/sun4i-codec.c
+++ b/sound/soc/sunxi/sun4i-codec.c
@@ -681,6 +681,9 @@ static const struct snd_kcontrol_new sun4i_codec_controls[] = {
        SOC_SINGLE_TLV("Power Amplifier Volume", SUN4I_CODEC_DAC_ACTL,
                       SUN4I_CODEC_DAC_ACTL_PA_VOL, 0x3F, 0,
                       sun4i_codec_pa_volume_scale),
+       SOC_SINGLE_TLV("Mic Playback Volume", SUN4I_CODEC_DAC_ACTL,
+                      SUN4I_CODEC_DAC_ACTL_MICG, 7, 0,
+                      sun4i_codec_micin_loopback_gain_scale),
 };
 
 static const struct snd_kcontrol_new sun4i_codec_left_mixer_controls[] = {