Re: [PATCH 00/22] Tahvo cleanups and Retu optimization

[Felipe Balbi <balbi@ti.com>]

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Hi,

On Mon, Jul 11, 2011 at 03:51:23PM +0200, Michael Büsch wrote:
> On Mon, 11 Jul 2011 16:45:53 +0300
> Felipe Balbi <balbi@ti.com> wrote:
> 
> > On Mon, Jul 11, 2011 at 03:41:26PM +0200, Michael Büsch wrote:
> > > On Mon, 11 Jul 2011 16:12:32 +0300
> > > Felipe Balbi <balbi@ti.com> wrote:
> > > > > Are you planning to implement a backlight driver for tahvo? I'm actually
> > > > > using the functionality that you removed in this patchset in the OpenWRT
> > > > > distribution.
> > > > 
> > > > if you have some extra documentation available, I could implement it
> > > > whenever I have some extra couple hours to play with this again... I
> > > > have no docs at all, but a led-tahvo.c would be really simple to get
> > > > done :-)
> > > 
> > > All I have is the old code. No docs. It seems rather simple, though.
> > > Only a PWM register. That's pretty straightforward.
> > 
> > cool, any pointers would be good ;-)
> 
> Pointers to what? How PWM works?
> http://en.wikipedia.org/wiki/Pulse_width_modulation
> 
> You probably don't need to know the details, though.
> Just write a 0 to the register to turn the LED off. And write
> a 0xF (or 0x7F depending on tahvo revision) to the register to
> turn it fully on. Any value in between to dim the LED.

no, not to PWM... pointers to the code using the old interface ;-)

-- 
balbi

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