Linus Walleij c663e5f567 gpio: support native single-ended hardware drivers ... Some GPIO controllers has a special hardware bit we can flip to support open drain / source. This means that on these hardwares we do not need to emulate OD/OS by setting the line to input instead of actively driving it high/low. Add an optional vtable callback to the driver set_single_ended() so that driver can implement this in hardware if they have it. We may need a pinctrl_gpio_set_config() call at some point to propagate this down to a backing pin control device on systems with split GPIO/pin control. Reported-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>		2016-04-05 16:57:15 +02:00
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consumer.h	gpio: keep the GPIO line names internal	2015-09-24 10:48:53 -07:00
driver.h	gpio: support native single-ended hardware drivers	2016-04-05 16:57:15 +02:00
machine.h	gpiolib: Add support for removing registered consumer lookup table	2015-07-21 09:21:40 +02:00