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path: root/drivers/gpio/gpio-it87.c
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2016-09-13gpio: constify gpio_chip structuresJulia Lawall
These structures are only used to copy into other structures, so declare them as const. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable optional_qualifier@ identifier i; position p; @@ static struct gpio_chip i@p = { ... }; @ok@ identifier r.i; expression e; position p; @@ e = i@p; @bad@ position p != {r.p,ok.p}; identifier r.i; struct gpio_chip e; @@ e@i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct gpio_chip i = { ... }; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-03-31gpio: gpio-it87: Add support for IT8620 and IT8628Martin Blumenstingl
These chips seem to have a 9th GPIO block (thus supporting 72 GPIOs) which is configured through SuperIO register 0xd2 (output enable) and 0xd3 (simple I/O). This is also the reason why io_size is larger than on IT8728 / IT8732. Unfortunately I don't have hardware to test this 9th GPIO block. I am also not sure about not configuring the Simple I/O registers as the hardware I have only uses GPIO block 8. Reading back the values of 0xc0-0xc7 (as configured by the BIOS/EFI on my board) shows that all have 0xff set. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-01-05gpio: it87: use gpiochip data pointerLinus Walleij
This makes the driver use the data pointer added to the gpio_chip to store a pointer to the state container instead of relying on container_of(). Cc: Diego Elio Pettenò <flameeyes@flameeyes.eu> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-02gpio: add GPIO support for IT87xx, replacing gpio-it8761eDiego Elio Pettenò
This patch adds support for the GPIOs found on the ITE super-I/O chips IT87xx. Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu> Signed-off-by: Christophe Vu-Brugier <cvubrugier@fastmail.fm> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>