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SubjectRe: [MeeGo-Dev][PATCH] Topcliff: Update PCH_GPIO driver to 2.6.35
On Tue, Sep 28, 2010 at 12:21:10PM +0900, Masayuki Ohtake wrote:

> > You should be implementing support for the device using the
> > standard interfaces used by the other GPIO drivers in kernel.

> I don't understand how userspace accesses to the driver.
> Let me know how to ? sysfs only ?

sysfs, though at least as often another driver in the kernel will
interact with the GPIOs. Search the kernel for users of the gpiolib

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