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LED updates for 4.20-rc1.

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Merge tag 'leds-for-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds

Pull LED updates from Jacek Anaszewski:
"We introduce LED pattern trigger - the idea that was proposed three
 years ago now received enough attention and determination to drive it
 to the successful end.

  There is also one new LED class driver and couple of improvements to
  the existing ones.

  New LED class driver:
   - add support for Panasonic AN30259A with related DT bindings

  New LED trigger:
   - introduce LED pattern trigger

  leds-sc27xx-bltc:
   - implement pattern_set/clear ops to enable support for pattern
     trigger's hw_pattern sysfs file

  Improvements to existing LED class drivers:
   - leds-pwm: don't print error message on -EPROBE_DEFER
   - leds-gpio: try to lookup gpiod from device
   - leds-as3645a: convert to using %pOFn instead of device_node.name"

* tag 'leds-for-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds: sc27xx: Add pattern_set/clear interfaces for LED controller
  leds: core: Introduce LED pattern trigger
  leds: add Panasonic AN30259A support
  dt-bindings: leds: document Panasonic AN30259A bindings
  leds: gpio: Try to lookup gpiod from device
  leds: pwm: silently error out on EPROBE_DEFER
  leds: Convert to using %pOFn instead of device_node.name
This commit is contained in:
Linus Torvalds 2018-10-23 08:55:03 +01:00
commit 6fd577cd4b
14 changed files with 1148 additions and 34 deletions
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15
include/linux/leds.h
View file

@ -22,6 +22,7 @@
#include <linux/workqueue.h>
struct device;
struct led_pattern;
/*
* LED Core
*/
@ -88,6 +89,10 @@ struct led_classdev {
unsigned long *delay_on,
unsigned long *delay_off);
int (*pattern_set)(struct led_classdev *led_cdev,
struct led_pattern *pattern, u32 len, int repeat);
int (*pattern_clear)(struct led_classdev *led_cdev);
struct device *dev;
const struct attribute_group **groups;
@ -472,4 +477,14 @@ static inline void led_classdev_notify_brightness_hw_changed(
struct led_classdev *led_cdev, enum led_brightness brightness) { }
#endif
/**
* struct led_pattern - pattern interval settings
* @delta_t: pattern interval delay, in milliseconds
* @brightness: pattern interval brightness
*/
struct led_pattern {
u32 delta_t;
int brightness;
};
#endif /* __LINUX_LEDS_H_INCLUDED */