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path: root/drivers/gpio/gpio-sch311x.c (follow)
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2018-11-05gpio: sch311x: clean an indentation issue, remove extraneous spaceColin Ian King1-1/+1
Trivial fix to clean up an indentation issue, remove space Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-07-02gpio: sch311x: Replace unsigned char with u8Linus Walleij1-7/+7
This purely syntactic change switches unsigned char to u8 in the driver. Cc: Bruno Randolf <br1@einfach.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-07-02gpio: sch311x: Implement open drain supportLinus Walleij1-0/+29
The chip has a bit for controlling open drain, and it is easy to implement the callback to support open drain when needed, so let's implement it. Cc: Bruno Randolf <br1@einfach.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-07-02gpio: sch311x: Use RMW to change directionLinus Walleij1-10/+12
Bit 0 in the config register obviously controls the direction of the GPIO so instead of hammering 0x0/0x1 into that register, use read-modify-write so that we can also alter the other bits in the register. Cc: Bruno Randolf <br1@einfach.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-07-02gpio: sch311x: Implement .get_direction()Linus Walleij1-0/+13
It's pretty simple to implement the .get_direction() for this chip, so let's just do it. Cc: Bruno Randolf <br1@einfach.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-07-02gpio: sch311x: Include the right headerLinus Walleij1-1/+1
This is a GPIO driver, include only <linux/gpio/driver.h>. Cc: Bruno Randolf <br1@einfach.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-06-07gpio: remove redundant owner assignments of driversMasahiro Yamada1-1/+0
A platform_driver need not set an owner since it will be populated by platform_driver_register(). Likewise for mcb_driver (gpio-menz127.c). Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-02-16gpio: sch311x: Use devm_request_regionWilliam Breathitt Gray1-5/+3
By the time request_region is called in the SMSC SCH311x GPIO driver, a corresponding device structure has already been allocated. The devm_request_region function should be used to help simplify the cleanup code and reduce the possible points of failure. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-01-05gpio: sch311x: use gpiochip data pointerLinus Walleij1-14/+7
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(). Acked-by: Bruno Randolf <br1@einfach.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-30gpio: use dev_get_platdata()Nizam Haider1-2/+2
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Nizam Haider <nijamh@cdac.in> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-19gpio: change member .dev to .parentLinus Walleij1-2/+2
The name .dev in a struct is normally reserved for a struct device that is let us say a superclass to the thing described by the struct. struct gpio_chip stands out by confusingly using a struct device *dev to point to the parent device (such as a platform_device) that represents the hardware. As we want to give gpio_chip:s real devices, this is not working. We need to rename this member to parent. This was done by two coccinelle scripts, I guess it is possible to combine them into one, but I don't know such stuff. They look like this: @@ struct gpio_chip *var; @@ -var->dev +var->parent and: @@ struct gpio_chip var; @@ -var.dev +var.parent and: @@ struct bgpio_chip *var; @@ -var->gc.dev +var->gc.parent Plus a few instances of bgpio that I couldn't figure out how to teach Coccinelle to rewrite. This patch hits all over the place, but I *strongly* prefer this solution to any piecemal approaches that just exercise patch mechanics all over the place. It mainly hits drivers/gpio and drivers/pinctrl which is my own backyard anyway. Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Rafał Miłecki <zajec5@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: Alek Du <alek.du@intel.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no> Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-07-22gpio: remove all usage of gpio_remove retval in driver/gpioabdoulaye berthe1-4/+2
Signed-off-by: abdoulaye berthe <berthe.ab@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-04-28gpio: sch311x: Slightly refactor sch311x_detect for better readabilityAxel Lin1-4/+12
Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-12-23gpio: sch311x: fix compilation errorLinus Walleij1-0/+1
Compilation failed on some platforms due to implicit inclusion of <linux/io.h>, make this dependency explicit. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-12-20gpio: add GPIO support for SMSC SCH311xBruno Randolf1-0/+431
This patch adds support for the GPIOs found on the SMSC "Super I/ SCH311x. The chip detection and I/O functions are copied from sch311x_wdt. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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