[alsa-devel] [PATCH 00/11] Intel HDMI fixes

[Wu Fengguang]

On Sun, Nov 15, 2009 at 11:54:57PM +0800, Takashi Iwai wrote:
> At Sun, 15 Nov 2009 19:32:19 +0800,
> Wu Fengguang wrote:
> > 
> > Hi Takashi,
> > 
> > Here is some Intel HDMI fixes, most of them are inspired/written by
> > David Härdeman (Big thanks!).
> > 
> > - fix audio infoframe size
> > - sticky infoframe/stream id/channel count to
> >   - not disturb (David's) fragile devices
> >   - avoid the first 0.5s audio samples be losted
> > - avoid losing presence info during
> >   - module reloading (by querying the pin sense status)
> >   - power off (by disabling it)
> 
> Thanks for the patches!
> 
> Most of them look good; however, I'm not much convinced wrt the
> disablement of power-saving.  In many cases, the power-saving is more 
> important than 0.5sec drop-out (particularly if it's already fixed in
> the succeeding playbacks).  Thus disabling the power-saving
> unconditionally is no good idea.
> 
> Maybe some flag, either an option or a mixer control, would be
> preferred for defining the behavior, as a compromise...

OK. I'll do this in a separate patch.

> Also, it'd be more readable if we define another common jack
> detection routine that calls the pin sense function, such as
> 
> int snd_hda_jack_detect(struct hda_codec *codc, hda_nid_t nid)
> {
> 	u32 sense = snd_hda_pin_sense(codec, nid);
> 	return !!(sense & AC_PINSENSE_PRESENCE);
> }
> 
> since all callers check only that bit.
> 
> Last but not least, don't forget to add comment to each new common
> function.  Although it's trivial, the documentation is always better
> to have :)

Good suggestions, thanks! All have been incorporated into the updated
patches.

Thanks,
Fengguang