V4L/DVB (7163): em28xx: makes audio settings more stable

Improves audio configurations on em28xx:
        - mutes audio before changing amux;
        - adds a delay after setting audio src;
        - waits up to 50ms for ac97 busy.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index f69f591eeaf6..eeda3b2faec8 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -189,7 +189,7 @@ static void video_mux(struct em28xx *dev, int index)
                 em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING, &route);
         }
 
-        em28xx_set_audio_source(dev);
+        em28xx_audio_analog_set(dev);
 }
 
 /* Usage lock check functions */
@@ -837,7 +837,6 @@ static int em28xx_reg_len(int reg)
         case AC97LSB_REG:
         case HSCALELOW_REG:
         case VSCALELOW_REG:
-
                 return 2;
         default:
                 return 1;