GPIO support for HTC Dream

Pavel Machek pavel at
Tue Dec 15 15:47:48 EST 2009


> >> For completeness you should probably also add:
> >> 
> >> static inline int irq_to_gpio(unsigned irq)
> >> {
> >> 	return -EINVAL;
> >> }
> >
> > I'd say that would be overdoing it.
> I only mentioned that one because it is one of the functions listed in
> Documentation/gpio.txt.  I'm not sure if that means it's "required".  You
> make the call...

Aha, sorry, I misparsed that. There's gpio_to_irq and irq_to_gpio. One
does not seem to be required; as I'm stubbing the other one, I'd
prefer to leave it alone.

> >> Otherwise, looks good to me.  Just test it to make sure it works :-).
> >> 
> >> Since I have no way of compiling or testing this...
> >> 
> >> Reviewed-by: H Hartley Sweeten <hsweeten at>
> >
> > I believe inlining that function would be bad change. Can I still use
> > reviewed-by tag?
> The reason I suggest making it an inline in the header is you might
> eventually want to change both gpio_to_irq and irq_to_gpio into macros
> so that they can be used for static initializers.  For right now both
> are simple return -EINVAL but when gpio irq's are supported you might
> find a need to use one or the other in a platform init...

According to gpio.txt, those are functions, not macros... and I
actually prefer functions, as they are harder to misuse.

> Regardless, yes you can still use my reviesed-by tag.

(cesky, pictures)

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