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[media] cx231xx: set standard tune to last known frequency when switching inputs 

If switching to a tuner input, reset the standard and tune to the last known
frequency.  We need to do this in particular for this bridge since the tuner
gets powered down when captuing on the composite or s-video inputs.

Signed-off-by: Devin Heitmueller <dheitmueller@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Devin Heitmueller 2010-07-12 16:50:30 -03:00 committed by Mauro Carvalho Chehab
parent 66d7c4318a
commit c09d6695bd
1 changed files with 8 additions and 0 deletions
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8
drivers/media/video/cx231xx/cx231xx-video.c
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@ -1246,6 +1246,14 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
video_mux(dev, i);
if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
INPUT(i)->type == CX231XX_VMUX_CABLE) {
/* There's a tuner, so reset the standard and put it on the
last known frequency (since it was probably powered down
until now */
call_all(dev, core, s_std, dev->norm);
}
mutex_unlock(&dev->lock);
return 0;
}