diff options
| author | Sam Ravnborg <sam@ravnborg.org> | 2020-07-19 11:07:30 +0300 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2020-07-20 12:26:06 +0300 |
| commit | d160fd4e918da33f5ffbcf005cd95888dbbe4f76 (patch) | |
| tree | c0e34f57c05b71463ebfd2a60babcef98a597f66 /include/linux/backlight.h | |
| parent | 6f10cd124c44eea018672d5852708ca5dca4d06d (diff) | |
| download | linux-d160fd4e918da33f5ffbcf005cd95888dbbe4f76.tar.xz | |
backlight: backlight: Document inline functions in backlight.h
Add documentation for the inline functions in backlight.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'include/linux/backlight.h')
| -rw-r--r-- | include/linux/backlight.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/backlight.h b/include/linux/backlight.h index cf9977169fe8..99381b5a289d 100644 --- a/include/linux/backlight.h +++ b/include/linux/backlight.h @@ -268,6 +268,10 @@ struct backlight_device { int use_count; }; +/** + * backlight_update_status - force an update of the backlight device status + * @bd: the backlight device + */ static inline int backlight_update_status(struct backlight_device *bd) { int ret = -ENOENT; @@ -361,6 +365,18 @@ extern int backlight_device_set_brightness(struct backlight_device *bd, unsigned #define to_backlight_device(obj) container_of(obj, struct backlight_device, dev) +/** + * bl_get_data - access devdata + * @bl_dev: pointer to backlight device + * + * When a backlight device is registered the driver has the possibility + * to supply a void * devdata. bl_get_data() return a pointer to the + * devdata. + * + * RETURNS: + * + * pointer to devdata stored while registering the backlight device. + */ static inline void * bl_get_data(struct backlight_device *bl_dev) { return dev_get_drvdata(&bl_dev->dev); |