> Agreed. So we need an gpio_core.c / .h which defines the following
> functions (just a proposal):
Yes.
> typedef struct gpio_adapter {
> int (*init_pin)(int pin);
> int (*set)(int pin, value);
> int (*get)(int pin);
> int (*dir)(int pin, int direction);
> int (*level)(int pin, int level);
> }
I don't understand the init_pin function, nor what "level" is.
Actually, even "dir" can be dropped: a get configures as input, a set
configures as output, the extra instruction is very little overhead.
But an alternate function configuration is definitely needed: everybody
has alternate functions associated to the pins. Just say "0" is gpio
and 1...n is SoC-specific.
So, are you going to write it? Or should someone else do that?
thanks
/alessandro
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