Re: How to access the GPIO pins in AT91SAM9260-EK under Linux

[matt_hsu <matt_hsu@xxxxxxxxxxxx>]

Felipe Balbi wrote:> On Mon, Dec 22, 2008 at 02:54:58PM +0100, ext Erik Mouw wrote:>   >> On Sun, 21 Dec 2008 12:15:43 +0800 "弓雷" <freshpassport@xxxxxxxxx>>> wrote:>>>>     >>> I think you shuld in kernel space to access GPIO pins, such as a kernel module.>>>       >> Oh, I agree that in most cases you would need a proper GPIO module. But>> if you only have a single GPIO pin user in userland (i.e.: a single>> process) you could access the pins from userland as well.>>     >> There's gpiolib under drivers/gpio and that's the standard way to access> gpios on kernel space. If you wanna access it through userland, you>       Here is an alternative solution to have raw GPIOs config.
    http://svn.openmoko.org/developers/werner/poke/
    Matt> could write a simple module using gpiolib to export the control of a> gpio via sysfs entry.>>   

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