[ALSA] ice1724 - Add PCM Playback Switch to Revo 7.1

This patch adds the support of mute for front channels of M-Audio
Revolution 7.1 (the DAC AK4381 features a mute bit).

Signed-off-by: Pavel Hofman <dustin@seznam.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 6 insertions, 1 deletions

diff --git a/sound/pci/ice1712/revo.c b/sound/pci/ice1712/revo.c
index 690ceb340644..d18a31e188a9 100644
--- a/sound/pci/ice1712/revo.c
+++ b/sound/pci/ice1712/revo.c
@@ -186,7 +186,12 @@ static int revo51_i2c_init(struct snd_ice1712 *ice,
 #define AK_DAC(xname,xch) { .name = xname, .num_channels = xch }
 
 static const struct snd_akm4xxx_dac_channel revo71_front[] = {
-        AK_DAC("PCM Playback Volume", 2)
+        {
+                .name = "PCM Playback Volume",
+                .num_channels = 2,
+                /* front channels DAC supports muting */
+                .switch_name = "PCM Playback Switch",
+        },
 };
 
 static const struct snd_akm4xxx_dac_channel revo71_surround[] = {