Vladimir Zapolskiy 60befd2ea1 gpio: update gpiochip .get() callback description ... Since gpiochip .get() callback may return a negative error value, it strictly limits the range of possible non-error returned values to a subset of [30:0] bitmask, however on practice on success all gpiochip drivers return either 0 for low signal or 1 for high signal, this is assured by "gpio: *: Be sure to clamp return value" series of changes. To avoid any confusion, misinterpretation and potential errors while developing gpiochip drivers in future convert this implicit assumption to a mandatory rule. For output signals with unknown output signal state gpiochip drivers should return a negative error instead of 0. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>		2015-12-26 22:28:43 +01:00
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consumer.h	gpio: keep the GPIO line names internal	2015-09-24 10:48:53 -07:00
driver.h	gpio: update gpiochip .get() callback description	2015-12-26 22:28:43 +01:00
machine.h	gpiolib: Add support for removing registered consumer lookup table	2015-07-21 09:21:40 +02:00