kernel/linux.git/include/linux/gpio/driver.h, branch v6.12.80

gpiolib: unexport gpiochip_get_desc()

2024-07-02T09:40:37+00:00

This function has been deprecated for some time and is now only used within the GPIOLIB core. Remove it from the public header and unexport it as all current users are linked against the compilation unit where it is defined. Link: https://lore.kernel.org/r/20240625073815.12376-1-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski

gpiolib: Remove data-less gpiochip_add() function

2024-06-11T20:06:27+00:00

GPIO chips should be added with driver-private data associated with the chip. If none is needed, NULL can be used. All users already do this except one, fix that here. With no more users of the base gpiochip_add() we can drop this function so no more users show up later. Signed-off-by: Andrew Davis Acked-by: Greg Kroah-Hartman Link: https://lore.kernel.org/r/20240610135313.142571-1-afd@ti.com Signed-off-by: Bartosz Golaszewski

gpiolib: Discourage to use formatting strings in line names

2024-05-07T07:43:17+00:00

Currently the documentation for line names allows to use %u inside the alternative name. This is broken in character device approach from day 1 and being in use solely in sysfs. Character device interface has a line number as a part of its address, so the users better rely on it. Hence remove the misleading documentation. On top of that, there are no in-kernel users (out of 6, if I'm correct) for such names and moreover if one exists it won't help in distinguishing lines with the same naming as '%u' will also be in them and we will get a warning in gpiochip_set_desc_names() for such cases. Signed-off-by: Andy Shevchenko Reviewed-by: Linus Walleij Reviewed-by: Kent Gibson Link: https://lore.kernel.org/r/20240505141420.627398-1-andy.shevchenko@gmail.com Signed-off-by: Bartosz Golaszewski

gpiolib: Add stubs for GPIO lookup functions

2024-03-26T11:44:56+00:00

The gpio_device_find_by_() functions do not have stubs which means that if they are referenced from code with an optiona dependency on gpiolib then the code will fail to link. Add stubs for lookups via fwnode and label. I have not added a stub for plain gpio_device_find() since it seems harder to see a use case for that which does not depend on gpiolib. With the addition of the GPIO reset controller (which lacks a gpiolib dependency) to the arm64 defconfig this is causing build breaks for arm64 virtconfig in -next: aarch64-linux-gnu-ld: drivers/reset/core.o: in function `__reset_add_reset_gpio_lookup': /build/stage/linux/drivers/reset/core.c:861:(.text+0xccc): undefined reference to `gpio_device_find_by_fwnode' Signed-off-by: Mark Brown Reviewed-by: Krzysztof Kozlowski Signed-off-by: Bartosz Golaszewski

Merge tag 'v6.8-rc7' into gpio/for-next

2024-03-05T18:24:34+00:00

Linux 6.8-rc7

gpio: provide for_each_hwgpio()

2024-02-26T15:43:51+00:00

We only provide iterators for requested GPIOs to provider drivers. In order to allow them to display debug information about all GPIOs, let's provide a variant for iterating over all GPIOs. Signed-off-by: Bartosz Golaszewski Reviewed-by: Linus Walleij

gpio: constify opaque pointer "data" in gpio_device_find()

2024-02-17T19:02:22+00:00

The opaque pointer "data" in each match function used by gpio_device_find() is a pointer to const, thus the same argument passed to gpio_device_find() can adjusted similarly. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Bartosz Golaszewski

gpiolib: add gpio_device_get_label() stub for !GPIOLIB

2024-02-13T10:02:53+00:00

Add empty stub of gpio_device_get_label() when GPIOLIB is not enabled. Cc: Fixes: d1f7728259ef ("gpiolib: provide gpio_device_get_label()") Suggested-by: kernel test robot Signed-off-by: Krzysztof Kozlowski Signed-off-by: Bartosz Golaszewski

gpiolib: add gpio_device_get_base() stub for !GPIOLIB

2024-02-13T10:02:52+00:00

Add empty stub of gpio_device_get_base() when GPIOLIB is not enabled. Cc: Fixes: 8c85a102fc4e ("gpiolib: provide gpio_device_get_base()") Signed-off-by: Krzysztof Kozlowski Signed-off-by: Bartosz Golaszewski

gpiolib: add gpiod_to_gpio_device() stub for !GPIOLIB

2024-02-13T10:02:47+00:00

Add empty stub of gpiod_to_gpio_device() when GPIOLIB is not enabled. Cc: Fixes: 370232d096e3 ("gpiolib: provide gpiod_to_gpio_device()") Signed-off-by: Krzysztof Kozlowski Signed-off-by: Bartosz Golaszewski