linux.git/include/linux/gpio.h, branch v6.16-rc2

gpiolib: make value setters have return values

2025-02-26T10:17:39+00:00

Change the in-kernel consumer interface for GPIOs: make all variants of
value setters that don't have a return value, return a signed integer
instead. That will allow these routines to indicate failures to callers.

This doesn't change the implementation just yet, we'll do it in
subsequent commits.

We need to update the gpio-latch module as it passes the address of
value setters as a function pointer argument and thus cares about its
type.

Reviewed-by: Linus Walleij 
Acked-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20250220-gpio-set-retval-v2-2-bc4cfd38dae3@linaro.org
Signed-off-by: Bartosz Golaszewski

gpio: Get rid of GPIOF_ACTIVE_LOW

2024-11-09T13:55:33+00:00

No more users.

Signed-off-by: Andy Shevchenko 
Reviewed-by: Linus Walleij 
Link: https://lore.kernel.org/r/20241104093609.156059-7-andriy.shevchenko@linux.intel.com
Signed-off-by: Bartosz Golaszewski

gpiolib: legacy: Kill GPIOF_DIR_* definitions

2024-09-02T09:47:06+00:00

Besides the fact that (old) drivers use wrong definitions, e.g.,
GPIOF_DIR_IN instead of GPIOF_IN, shrink the legacy definitions
by killing those GPIOF_DIR_* completely.

Signed-off-by: Andy Shevchenko 
Reviewed-by: Linus Walleij 
Acked-by: Alexander Sverdlin 
Reviewed-by: Alexander Sverdlin 
Link: https://lore.kernel.org/r/20240828142554.2424189-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Bartosz Golaszewski

gpiolib: legacy: Kill GPIOF_INIT_* definitions

2024-09-02T09:47:06+00:00

Besides the fact that (old) drivers use wrong definitions, e.g.,
GPIOF_INIT_HIGH instead of GPIOF_OUT_INIT_HIGH, shrink the legacy
definitions by killing those GPIOF_INIT_* completely.

Signed-off-by: Andy Shevchenko 
Reviewed-by: Linus Walleij 
Acked-by: Alexander Sverdlin 
Reviewed-by: Alexander Sverdlin 
Link: https://lore.kernel.org/r/20240828142554.2424189-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Bartosz Golaszewski

gpio: Remove legacy API documentation

2024-05-27T14:50:03+00:00

In order to discourage people to use old and legacy GPIO APIs
remove the respective documentation completely. It also helps
further cleanups of the legacy GPIO API leftovers, which is
ongoing task.

Signed-off-by: Andy Shevchenko 
Reviewed-by: Hu Haowen <2023002089@link.tyut.edu.cn>
Link: https://lore.kernel.org/r/20240508101703.830066-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Bartosz Golaszewski

gpiolib: Get rid of never false gpio_is_valid() calls

2024-04-17T20:46:44+00:00

In the cases when gpio_is_valid() is called with unsigned parameter
the result is always true in the GPIO library code, hence the check
for false won't ever be true. Get rid of such calls.

While at it, move GPIO device base to be unsigned to clearly show
it won't ever be negative. This requires a new definition for the
maximum GPIO number in the system.

Signed-off-by: Andy Shevchenko 
Reviewed-by: Linus Walleij 
Signed-off-by: Bartosz Golaszewski

gpiolib: legacy: Remove unused gpio_request_array() and gpio_free_array()

2024-04-03T11:07:52+00:00

No more users.

Signed-off-by: Andy Shevchenko 
Reviewed-by: Yanteng Si 
Signed-off-by: Bartosz Golaszewski

gpiolib: remove unused gpio_cansleep()

2023-06-13T14:49:23+00:00

There is not a single user in the entire kernel of this deprecated API,
kill it for good.

Signed-off-by: Andy Shevchenko 
Reviewed-by: Yanteng Si 
Reviewed-by: Linus Walleij 
Signed-off-by: Bartosz Golaszewski

gpiolib: Kill unused GPIOF_OPEN_*

2023-06-01T07:52:39+00:00

There is no use of the GPIOF_OPEN_* in the kernel. Kill it for good.

Signed-off-by: Andy Shevchenko 
Reviewed-by: Linus Walleij 
Signed-off-by: Bartosz Golaszewski

gpiolib: Kill unused GPIOF_EXPORT and Co

2023-06-01T07:52:31+00:00

There is no use of the GPIOF_EXPORT in the kernel. Kill it for good.

Signed-off-by: Andy Shevchenko 
Reviewed-by: Linus Walleij 
Signed-off-by: Bartosz Golaszewski