On Tue, 26 Jul 2011, Russell King - ARM Linux wrote:

I don't think there's any plans to break the:

linux/gpio.h -> asm/gpio.h -> mach/gpio.h

include path at the moment, as platforms do define ARCH_NR_GPIO,
which has to be done before asm-generic/gpiolib.h is included.

Well, this GPIO business is the biggest hurdle towards a single kernel 
image that can support multiple SOCs at the moment, and the only one for 
which I have no solution yet.  Anything that could help removing 
mach/gpio.h from asm/gpio.h would be welcome.


Nicolas