V4L/DVB (5776): Hardware MPEG audio fix for SAA7134 based "KNC One TV-Station DVR" card

With previous patch card is generating MPEG audio stream too.
Unfortunatly I2S audio output is muted. Unmute it.

Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/media/video/saa7134/saa7134-empress.c b/drivers/media/video/saa7134/saa7134-empress.c
index f521603482c..fc260ec8fdc 100644
--- a/drivers/media/video/saa7134/saa7134-empress.c
+++ b/drivers/media/video/saa7134/saa7134-empress.c
@@ -96,6 +96,10 @@ static int ts_open(struct inode *inode, struct file *file)
         if (dev->empress_users)
                 goto done_up;
 
+        /* Unmute audio */
+        saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
+                saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
+
         dev->empress_users++;
         file->private_data = dev;
         err = 0;
@@ -121,6 +125,10 @@ static int ts_release(struct inode *inode, struct file *file)
         /* stop the encoder */
         ts_reset_encoder(dev);
 
+        /* Mute audio */
+        saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
+                saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
+
         mutex_unlock(&dev->empress_tsq.lock);
         return 0;
 }