gpio: pcf857x: Implement get_multiple/set_multiple methods

Browse source

This change allows the GPIO core to read/change multiple pins in a
single driver call and subsequent I2C transfer. It helps a lot with
PCF857x devices, since their I2C protocol always reads/changes all
existing pins anyway. Therefore, when the GPIO client code does a bulk
operation on multiple pins, the driver makes a single I2C transfer.

Signed-off-by: Radu Rendec <radu.rendec@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

...

This commit is contained in:

Radu Rendec 2023-01-06 11:04:19 -05:00 • committed by Bartosz Golaszewski

parent 17a5f49b49

commit 64d2f4594e

1 changed files with 29 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

29

drivers/gpio/gpio-pcf857x.c

View file