Messages in this thread | | | Date | Thu, 19 Dec 2013 10:47:37 -0600 | From | Felipe Balbi <> | Subject | Re: [RFC PATCH] gpio: add GPIO hogging mechanism |
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On Thu, Dec 19, 2013 at 08:41:09AM -0800, Greg Kroah-Hartman wrote: > On Thu, Dec 19, 2013 at 03:34:31PM +0100, Boris BREZILLON wrote: > > GPIO hogging is a way to request and configure specific GPIO without > > explicitly requesting it in the device driver. > > > > The request and configuration procedure is handled in the core device > > driver code before the driver probe function is called. > > > > It allows specific GPIOs to be configured without any driver specific code. > > > > Particularly usefull when a external device is connected to a bus and the > > bus connections depends on an external switch controlled by a GPIO pin.
for external switches, you probably need a pinctrl-gpio driver.
-- balbi [unhandled content-type:application/pgp-signature] | |