Re: GPIO driver for MPC8313.

[Johnny Hung <johnny.hacking@gmail.com>]

Thanks, got it. BTW, how to trigger GPIO level in user space
application? I also found arch/powerpc/platforms/52xx/mpc52xx_gpio.c
is a good example. Any reply is appreciate.

BRs, H. Johnny

2009/9/23 Peter Korsgaard <jacmet@sunsite.dk>:
>>>>>> "Johnny" == Johnny Hung <johnny.hacking@gmail.com> writes:
>
>  Johnny> Hi All:
>  Johnny>    Is there a alreday written GPIO dirver or example for
>  Johnny> MPC8313/similar ppc platform. It looks like many people need GPIO
>  Johnny> dirver to control LED, etc... I think is it possible to write a
>  Johnny> general gpio driver for all ppc platform and only need to modify gpio
>  Johnny> iomap information of dtb file. Please give me a advice. Thanks in
>  Johnny> advanced.
>
> Sure, it's arch/powerpc/sysdev/mpc8xxx_gpio.c, included since 2.6.28. To
> use it, simply enable CONFIG_MPC8xxx_GPIO and add a gpio-controller node
> to your dts, similar to how it's done in
> arch/powerpc/boot/dts/mpc837*_rdb.dts.
>
> See Documentation/powerpc/dts-bindings/fsl/8xxx_gpio.txt for details of
> the dts bindings.
>
> --
> Bye, Peter Korsgaard
>