At Wed, 7 Feb 2007 14:14:50 -0800,John Utz wrote:> > Just a thought!> > When I grepped for 5c I found some non-obvious things that make sense with respect to> the people that implemented the drivers:> > [jutz@localhost mntgto]$ find . -name \*.h -exec grep -Hn AC97 {} \; | grep -i 5C> > ./alsa/alsa-driver-1.0.14rc2/sound/include/ac97_codec.h:283:#define> AC97_AD_TEST2 0x5c /* undocumented test register 2 */> > ./alsa/alsa-driver-1.0.14rc2/sound/include/ac97_codec.h:299:#define> AC97_CXR_AUDIO_MISC 0x5c> > but as near as I can tell it’s called ‘vendor reserved’> > (AC ’97 Component Specification p62 – ‘Vendor Reserved Registers 5A=5Fh, 70h – 7Ah)
You can define 0x5c as AC97_VENDOR_RESERVED in addition, of course.But you don't have to replace already existing definitions. Theirmeanings are clearer than VENDOR_RESERVED.
Takashi
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