gpio: add new SET_CONFIG ioctl() to gpio chardev

Browse source

Add the GPIOHANDLE_SET_CONFIG_IOCTL to the gpio chardev.
The ioctl allows some of the configuration of a requested handle to be
changed without having to release the line.
The primary use case is the changing of direction for bi-directional
lines.

Based on initial work by Bartosz Golaszewski <bgolaszewski@baylibre.com>

Signed-off-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

...

This commit is contained in:

Kent Gibson 2019-11-05 10:04:29 +08:00 • committed by Bartosz Golaszewski

parent b043ed7ef0

commit e588bb1eae

2 changed files with 87 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

18

include/uapi/linux/gpio.h

View file