[alsa-devel] [PATCH] Add mute support to FM-only card with FM801 PCI to tuner bridge

Takashi Iwai tiwai at suse.de
Thu Jan 24 16:45:39 CET 2008

At Thu, 24 Jan 2008 17:13:42 +0200,
Andy Shevchenko wrote:
> Hi!
> This is improvement of the early support of the FM-only cards where the
> fm801 chip represents the PCI to tuner bridge.
> The tuner initialization isn't included the mute on as well as mute support
> via V4L request. Proposed patch should fix this at least for 64-PCR model.

Instead of adding noop callbacks, it's better to add a NULL check of
tea->ops->mute.  That is, something like:

	if (tea->ops->mute)
		tea->ops->mute(tea, (v.flags & VIDEO_AUDIO_MUTE) != 0);

We don't need to define TEA575X_[UN]MUTE.  They are just bool, so use
zero and non-zero. 

Last but not least, please fix the coding style issues reported via



More information about the Alsa-devel mailing list