kernel/Documentation/driver-api/gpio/index.rst, branch linux-rolling-stable

Documentation: gpio: Add a compatibility and feature list for PCA953x

2025-11-19T11:07:39Z

I went through all the datasheets and created this note listing chip functions and register layouts. Signed-off-by: Levente Révész Signed-off-by: Andy Shevchenko Acked-by: Randy Dunlap Tested-by: Randy Dunlap Reviewed-by: Linus Walleij Reviewed-by: Bagas Sanjaya Link: https://lore.kernel.org/r/20251112224924.2091880-1-andriy.shevchenko@linux.intel.com Signed-off-by: Bartosz Golaszewski

Documentation: gpio: add documentation about using software nodes

2025-08-26T13:27:04Z

Introduce documentation regarding use of software nodes to describe GPIOs on legacy boards that have not been converted to device tree. Reviewed-by: Randy Dunlap Tested-by: Randy Dunlap Signed-off-by: Dmitry Torokhov Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/tnaaz2qlk5jpbonfle7uy7pb54qx6ixwuczfbkwtxxwpj7hwas@y7a2rwko3k6c Signed-off-by: Bartosz Golaszewski

gpiolib-acpi: Update file references in the Documentation and MAINTAINERS

2025-05-21T09:25:24Z

The recent changes in the gpiolib-acpi.c need also updates in the Documentation and MAINTAINERS. Do the necessary changes here. Fixes: babb541af627 ("gpiolib: acpi: Move quirks to a separate file") Reported-by: Stephen Rothwell Closes: https://lore.kernel.org/r/20250516193436.09bdf8cc@canb.auug.org.au Reviewed-by: Randy Dunlap Tested-by: Randy Dunlap Acked-by: Ilpo Järvinen Signed-off-by: Andy Shevchenko

gpio: Remove legacy API documentation

2024-05-27T14:50:03Z

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

gpio: Add use guidance documentation

2020-01-15T10:11:43Z

The text in this new document is a response to recurring questions about the GPIO in-kernel API vs the userspace ABI. When do you use one or the other? It can be a bit intuitive, but I tried to sum it all up. Reviewed-by: Bartosz Golaszewski Link: https://lore.kernel.org/r/20200108001712.47500-1-linus.walleij@linaro.org Signed-off-by: Linus Walleij

docs: driver-api: Move bt8xxgpio to the gpio directory

2019-10-09T09:12:33Z

Let's declutter Documentation/driver-api a bit. Signed-off-by: Jonathan Neuschäfer Link: https://lore.kernel.org/r/20191004164059.10397-1-j.neuschaefer@gmx.net Signed-off-by: Linus Walleij

gpio: fix kernel-doc after devres.c file rename

2018-10-10T11:49:15Z

Fix gpio kernel-doc generation after rename of the devres.c file. Fixes these errors & warning: Error: Cannot open file ../drivers/gpio/devres.c Error: Cannot open file ../drivers/gpio/devres.c WARNING: kernel-doc '../scripts/kernel-doc -rst -enable-lineno -export ../drivers/gpio/devres.c' failed with return code 2 Signed-off-by: Randy Dunlap Signed-off-by: Linus Walleij

Documentation: gpio: Move drivers-on-gpio.txt to driver-api

2018-03-23T03:22:29Z

Move gpio/drivers-on-gpio.txt to driver-api/gpio/drivers-on-gpio.rst and make sure it builds cleanly as ReST. Signed-off-by: Jonathan Neuschäfer Signed-off-by: Linus Walleij

Documentation: gpio: Move GPIO mapping documentation to driver-api

2018-03-23T03:22:04Z

Move gpio/board.txt to driver-api/gpio/board.rst and make sure it builds cleanly as ReST. Signed-off-by: Jonathan Neuschäfer Signed-off-by: Linus Walleij

Documentation: gpio: Move gpiod_* consumer documentation to driver-api

2018-03-23T03:21:40Z

Move gpio/consumer.txt to driver-api/gpio/consumer.rst and make sure it builds cleanly as ReST. Signed-off-by: Jonathan Neuschäfer Signed-off-by: Linus Walleij