diff options
Diffstat (limited to 'include/linux/leds.h')
| -rw-r--r-- | include/linux/leds.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/include/linux/leds.h b/include/linux/leds.h index 2bbe8a38fe39..d101fd13e18e 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -8,6 +8,7 @@ #ifndef __LINUX_LEDS_H_INCLUDED #define __LINUX_LEDS_H_INCLUDED +#include <dt-bindings/leds/common.h> #include <linux/device.h> #include <linux/kernfs.h> #include <linux/list.h> @@ -33,6 +34,25 @@ enum led_brightness { struct led_init_data { /* device fwnode handle */ struct fwnode_handle *fwnode; + /* + * default <color:function> tuple, for backward compatibility + * with in-driver hard-coded LED names used as a fallback when + * DT "label" property is absent; it should be set to NULL + * in new LED class drivers. + */ + const char *default_label; + /* + * string to be used for devicename section of LED class device + * either for label based LED name composition path or for fwnode + * based when devname_mandatory is true + */ + const char *devicename; + /* + * indicates if LED name should always comprise devicename section; + * only LEDs exposed by drivers of hot-pluggable devices should + * set it to true + */ + bool devname_mandatory; }; struct led_classdev { @@ -258,6 +278,22 @@ extern void led_sysfs_disable(struct led_classdev *led_cdev); extern void led_sysfs_enable(struct led_classdev *led_cdev); /** + * led_compose_name - compose LED class device name + * @dev: LED controller device object + * @child: child fwnode_handle describing a LED or a group of synchronized LEDs; + * it must be provided only for fwnode based LEDs + * @led_classdev_name: composed LED class device name + * + * Create LED class device name basing on the provided init_data argument. + * The name can have <devicename:color:function> or <color:function>. + * form, depending on the init_data configuration. + * + * Returns: 0 on success or negative error value on failure + */ +extern int led_compose_name(struct device *dev, struct led_init_data *init_data, + char *led_classdev_name); + +/** * led_sysfs_is_disabled - check if LED sysfs interface is disabled * @led_cdev: the LED to query * @@ -434,6 +470,15 @@ struct led_platform_data { struct led_info *leds; }; +struct led_properties { + u32 color; + bool color_present; + const char *function; + u32 func_enum; + bool func_enum_present; + const char *label; +}; + struct gpio_desc; typedef int (*gpio_blink_set_t)(struct gpio_desc *desc, int state, unsigned long *delay_on, |