Linux kernel documentation tree maintained by Jonathan Corbet http://mirrors.hust.edu.cn/git/lwn.git/atom?h=standardize-docs 2017-03-24T13:05:00+00:00 2017-03-24T13:05:00+00:00 Russell King rmk+kernel@armlinux.org.uk 2016-09-02T11:05:56+00:00 urn:sha1:0e3cb6ee386f384a9131f0c7db52a0a961d2ded9 Add support for mapping gpio-reg gpios to interrupts. This may be a non-linear mapping - some gpios in the register may not even have corresponding interrupts associated with them, so we need to pass an array. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> 2017-03-24T13:04:46+00:00 Russell King rmk+kernel@armlinux.org.uk 2016-08-31T07:49:44+00:00 urn:sha1:380639c7cc786ec663e43eb3896ccf9172a46900 Add a simple, generic, single register fixed-direction GPIO driver. This is able to support a single register with a mixture of inputs and outputs. This is different from gpio-mmio and gpio-74xx-mmio: * gpio-mmio doesn't allow a fixed direction, it assumes there is always a direction register. * gpio-74xx-mmio only supports all-in or all-out setups * gpio-74xx-mmio is DT only, this needs to support legacy too * they don't double-read when getting the GPIO value, as required by some implementations that this driver supports * we need to always do 32-bit reads, which bgpio doesn't guarantee * the current output state may not be readable from the hardware register - reading may reflect input status but not output status. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>