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V4L/DVB (12345): em28xx: fix audio VIDIOC_S_CTRL adjustments on devices without ac97

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Even devices without ac97 needs to call analog audio setup function, to
properly set xclk and mute/unmute.

Thanks to Angelo Cano <acano@fastmail.fm> for reporting and testing it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2009-07-29 01:42:02 -03:00
parent e81516c58e
commit 73c6f462d1
1 changed files with 17 additions and 3 deletions
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20
drivers/media/video/em28xx/em28xx-video.c
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@ -1146,11 +1146,25 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
else
rc = 1;
/* It were not an AC97 control. Sends it to the v4l2 dev interface */
/* It isn't an AC97 control. Sends it to the v4l2 dev interface */
if (rc == 1) {
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
/* FIXME: should be returning a meaninful value */
rc = 0;
/*
* In the case of non-AC97 volume controls, we still need
* to do some setups at em28xx, in order to mute/unmute
* and to adjust audio volume. However, the value ranges
* should be checked by the corresponding V4L subdriver.
*/
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
dev->mute = ctrl->value;
rc = em28xx_audio_analog_set(dev);
break;
case V4L2_CID_AUDIO_VOLUME:
dev->volume = ctrl->value;
rc = em28xx_audio_analog_set(dev);
}
}
mutex_unlock(&dev->lock);