1 files changed, 22 insertions, 0 deletions

diff --git a/sound/pci/fm801.c b/sound/pci/fm801.c
index 25c1087d2c00..4c300e6149fc 100644
--- a/sound/pci/fm801.c
+++ b/sound/pci/fm801.c
@@ -978,6 +978,27 @@ static unsigned int snd_fm801_tea575x_64pcr_read(struct snd_tea575x *tea)
         return val;
 }
 
+static void snd_fm801_tea575x_64pcr_mute(struct snd_tea575x *tea,
+                                          unsigned int mute)
+{
+        struct fm801 *chip = tea->private_data;
+        unsigned short reg;
+
+        spin_lock_irq(&chip->reg_lock);
+
+        reg = inw(FM801_REG(chip, GPIO_CTRL));
+        if (mute)
+                /* 0xf800 (mute) */
+                reg &= ~FM801_GPIO_GP(TEA_64PCR_WRITE_ENABLE);
+        else
+                /* 0xf802 (unmute) */
+                reg |= FM801_GPIO_GP(TEA_64PCR_WRITE_ENABLE);
+        outw(reg, FM801_REG(chip, GPIO_CTRL));
+        udelay(1);
+
+        spin_unlock_irq(&chip->reg_lock);
+}
+
 static struct snd_tea575x_ops snd_fm801_tea_ops[3] = {
         {
                 /* 1 = MediaForte 256-PCS */
@@ -993,6 +1014,7 @@ static struct snd_tea575x_ops snd_fm801_tea_ops[3] = {
                 /* 3 = MediaForte 64-PCR */
                 .write = snd_fm801_tea575x_64pcr_write,
                 .read = snd_fm801_tea575x_64pcr_read,
+                .mute = snd_fm801_tea575x_64pcr_mute,
         }
 };
 #endif