mirror of
https://github.com/torvalds/linux.git
synced 2024-11-19 02:21:47 +00:00
561099a1a2
The PCA955x family of chips are I2C LED blinkers whose pins not used to control LEDs can be used as general purpose I/Os (GPIOs). The following adds such a support by defining different operation modes for the pins (See bindings documentation for more details). The pca955x driver is then extended with a gpio_chip when some of pins are operating as GPIOs. The default operating mode is to behave as a LED. The GPIO support is conditioned by CONFIG_LEDS_PCA955X_GPIO. Signed-off-by: Cédric Le Goater <clg@kaod.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
17 lines
482 B
C
17 lines
482 B
C
/*
|
|
* This header provides constants for pca955x LED bindings.
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#ifndef _DT_BINDINGS_LEDS_PCA955X_H
|
|
#define _DT_BINDINGS_LEDS_PCA955X_H
|
|
|
|
#define PCA955X_TYPE_NONE 0
|
|
#define PCA955X_TYPE_LED 1
|
|
#define PCA955X_TYPE_GPIO 2
|
|
|
|
#endif /* _DT_BINDINGS_LEDS_PCA955X_H */
|