On Tue, Sep 28, 2010 at 06:23:24PM +0530, Hemanth V wrote:
> ----- Original Message ----- From: "Arun Murthy"
> >The existing pwm based led and backlight driver makes use of the
> >pwm(include/linux/pwm.h). So all the board specific pwm drivers will
> >be exposing the same set of function name as in include/linux/pwm.h.
> >As a result build fails in case of multi soc environments where each soc
> >has a pwm device in it.
> This seems very specific to ST environment,
No it's not. It's an issue Arun has hit while enabling one of the ST MFD chip,
but he's tackling a generic issue.
> looking at the driver list from
> ( [PATCH 4/7] pwm: Align existing pwm drivers with pwm-core ) it seems
> most multi SOC environments might support PWM in either one of the SOC.
> Unless people have examples of other SOCs which might use this,
> the better approach might be to go for a custom driver rather than changing
> the framework.
I wouldn't call the current pwm code a framework. It's a bunch of header
definitions that happens to work in the specific case of 1 pwm per
What Arun is proposing is an actual framework. And it seems to be clean and
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