ASoC: wm8741: Add digital mute callback

Signed-off-by: Sergej Sawazki <sergej@taudac.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm8741.c

@@ -358,6 +358,15 @@ static int wm8741_set_dai_fmt(struct snd_soc_dai *codec_dai,
 	return 0;
 }
 
+int wm8741_mute(struct snd_soc_dai *codec_dai, int mute)
+{
+	struct snd_soc_component *component = codec_dai->component;
+
+	snd_soc_component_update_bits(component, WM8741_VOLUME_CONTROL,
+			WM8741_SOFT_MASK, !!mute << WM8741_SOFT_SHIFT);
+	return 0;
+}
+
 #define WM8741_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
 			SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \
 			SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | \
@@ -371,6 +380,7 @@ static const struct snd_soc_dai_ops wm8741_dai_ops = {
 	.hw_params	= wm8741_hw_params,
 	.set_sysclk	= wm8741_set_dai_sysclk,
 	.set_fmt	= wm8741_set_dai_fmt,
+	.digital_mute   = wm8741_mute,
 };
 
 static struct snd_soc_dai_driver wm8741_dai = {