Re: maestro3 hardware volume control

[Takashi Iwai <tiwai@suse.de>]

At Mon, 18 Apr 2005 15:22:58 +0200,
rwd wrote:
> 
> Hi,
> 
> the maestro3 runs fine on my compaq evo n400c (ES1988). Just one thing
> remains unsolved - the 2 nice volume control buttons that seem to be wired
> directly to the ES1988 won't work until now. 
> 
> I'm relatively new to linux and not a driver programmer, but scrolling
> through the documentation of the chip & the driver source quickly revealed
> that the volume can be controlled directly by two buttons, but the driver
> doesn't seem make use of that. 
> 
> Can anybody give me a hint how to use/enable the hardware volume control on
> that chip? Is a major rewrite of the driver required? Maybe some other
> driver could do that? The es1968 seems to support hw vol, might that driver
> run also on the ES1988?

The problem is -- we don't know.  We have no proper datasheet for this
chip...


Takashi


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