[alsa-devel] [PATCH] add new Fermi 5xx codec IDs to snd-hda

[Stephen Warren]

Richard Samson wrote at Tuesday, March 01, 2011 10:16 AM:
> Le mardi 01 mars 2011 à 08:40 -0800, Stephen Warren a écrit :
> > Richard Samson wrote at Tuesday, March 01, 2011 8:15 AM:
> > > Le lundi 28 février 2011 à 19:09 +0100, Takashi Iwai a écrit :
> > > > At Mon, 28 Feb 2011 18:56:20 +0100,
> > > > samson.richard at gmail.com wrote:
> > > > > As Stephen Warren said, a patch with full support of 5xx cards will be
> > > > > more useful.
> > > >
> > > > OK, Stephen, could you prepare the patch including all missing IDs?
> > >
> > > I wrote an new patch with three new codec IDs for Nvidia Fermi cards.
> > > I attended to use existing IDs and online technical specifications to
> > > get two others cards :
> > > - Nvidia GeForce GTX 470 : id = 0x10de0015
> > > - Nvidia GeForce GTX 560 Ti : id = 0x10de0016 (works fine)
> > > - Nvidia GeForce GTX 570 : id = 0x10de0017
> >
> > They don't appear to match our Windows driver. Where did you get the values
> > from? (0x17 isn't in the Windows driver at all. 0x15 shouldn't be a GTX 470)
> 
> I ask to a reseller, it seems a bad idea.

The only way to find the values that I know of would be to plug the card
in, run Linux, and look at the ALSA /proc files. (Perhaps there's some
equivalent tool under Windows)

> If I can help, where are these values in the Windows driver ?

They encoded into the binary. I doubt they're user-accessible.

So, I think the best way to proceed is for you to modify your patch to add
IDs 0x15 and 0x16 only. I'm pretty sure ID 0x17 isn't assigned to anything.
Let's not remove any NVIDIA IDs even though I'm pretty sure a couple aren't
actually assigned; if I'm wrong, we'd just have to add them back later, and
having them in won't harm anything.

Thanks.

-- 
nvpublic