user/sven/linux.git/include/linux/gpio/driver.h, branch v6.9.3

gpiolib: Add stubs for GPIO lookup functions

2024-03-26T11:44:56Z

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

2024-03-05T18:24:34Z

Linux 6.8-rc7

gpio: provide for_each_hwgpio()

2024-02-26T15:43:51Z

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()

2024-02-17T19:02:22Z

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

2024-02-13T10:02:53Z

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

2024-02-13T10:02:52Z

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

2024-02-13T10:02:47Z

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

gpio: constify opaque pointer in gpio_device_find() match function

2024-02-12T09:18:31Z

The match function used in gpio_device_find() should not modify the contents of passed opaque pointer, because such modification would not be necessary for actual matching and it could lead to quite unreadable, spaghetti code. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Mika Westerberg Reviewed-by: Linus Walleij Reviewed-by: Andy Shevchenko [Bartosz: fix coding style in header] Signed-off-by: Bartosz Golaszewski

gpio: improve the API contract for setting direction

2024-01-29T10:45:49Z

If a GPIO driver returns a positive integer from one of the direction setter callbacks, we'll end up propagating it to user-space. Whether we should sanitize the values returned by callbacks is a different question but let's first improve the documentation and fortify the contract with GPIO providers. Reported-by: José Guilherme de Castro Rodrigues Signed-off-by: Bartosz Golaszewski Reviewed-by: Kent Gibson

gpio: unexport GPIO irq domain functions only used internally

2024-01-29T10:45:49Z

There are no external users for the irq domain helpers so unexport them and remove the prototypes from the driver header. Signed-off-by: Bartosz Golaszewski