diff options
| author | Cédric Le Goater <clg@kaod.org> | 2017-08-08 16:42:39 +0300 |
|---|---|---|
| committer | Jacek Anaszewski <jacek.anaszewski@gmail.com> | 2017-08-14 23:22:37 +0300 |
| commit | 561099a1a2e992a482a8318c0c9c5af26222e5cd (patch) | |
| tree | 1fab407e2140c2efdb5e005a4302d576d6613d33 /include/dt-bindings | |
| parent | 91940bb4ca7b7f1b5426cc14bdbd0c7f8347683f (diff) | |
| download | linux-561099a1a2e992a482a8318c0c9c5af26222e5cd.tar.xz | |
leds: pca955x: add GPIO support
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>
Diffstat (limited to 'include/dt-bindings')
| -rw-r--r-- | include/dt-bindings/leds/leds-pca955x.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/dt-bindings/leds/leds-pca955x.h b/include/dt-bindings/leds/leds-pca955x.h new file mode 100644 index 000000000000..78cb7e979de7 --- /dev/null +++ b/include/dt-bindings/leds/leds-pca955x.h @@ -0,0 +1,16 @@ +/* + * 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 */ |