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LED updates for 4.19-rc1

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Merge tag 'leds-for-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds

Pull LED updates from Jacek Anaszewski:
 "LED triggers improvements make the biggest part of this pull request.
  The most striking ones, that allowed for nice cleanups in the triggers
  are:

   - centralized handling of creation and removal of trigger sysfs
     attributes via attribute group

   - addition of module_led_trigger() helper

  The other things that need to be mentioned:

  New features and improvements to existing LED class drivers:

   - lt3593: add DT support, switch to gpiod interface

   - lm3692x: support LED sync configuration, change OF calls to fwnode
     calls

   - apu: modify PC Engines apu/apu2 driver to support apu3

  Change in the drivers/net/can/led.c:

   - mark led trigger as broken since it's in the way for the further
     cleanups. It implements a subset of the netdev trigger and an Ack
     is needed from someone who can actually test and confirm that the
     netdev trigger works for can devices"

* tag 'leds-for-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds: (32 commits)
  leds: ns2: Change unsigned to unsigned int
  usb: simplify usbport trigger
  leds: gpio trigger: simplifications from core changes
  leds: backlight trigger: simplifications from core changes
  leds: activity trigger: simplifications from core changes
  leds: default-on trigger: make use of module_led_trigger()
  leds: heartbeat trigger: simplifications from core changes
  leds: oneshot trigger: simplifications from core changes
  leds: transient trigger: simplifications from core changes
  leds: timer trigger: simplifications from core changes
  leds: netdev trigger: simplifications from core changes
  leds: triggers: new function led_set_trigger_data()
  leds: triggers: define module_led_trigger helper
  leds: triggers: handle .trigger_data and .activated() in the core
  leds: triggers: add device attribute support
  leds: triggers: let struct led_trigger::activate() return an error code
  leds: triggers: make the MODULE_LICENSE string match the actual license
  leds: lm3692x: Support LED sync configuration
  dt: bindings: lm3692x: Update binding for LED sync control
  leds: lm3692x: Change DT calls to fwnode calls
  ...
This commit is contained in:
Linus Torvalds 2018-08-14 13:07:22 -07:00
commit c07b3682cd
28 changed files with 641 additions and 619 deletions
Download patch file Download diff file Expand all files Collapse all files

36
include/linux/leds.h
View file

@ -253,7 +253,7 @@ static inline bool led_sysfs_is_disabled(struct led_classdev *led_cdev)
struct led_trigger {
/* Trigger Properties */
const char *name;
void (*activate)(struct led_classdev *led_cdev);
int (*activate)(struct led_classdev *led_cdev);
void (*deactivate)(struct led_classdev *led_cdev);
/* LEDs under control by this trigger (for simple triggers) */
@ -262,8 +262,19 @@ struct led_trigger {
/* Link to next registered trigger */
struct list_head next_trig;
const struct attribute_group **groups;
};
/*
* Currently the attributes in struct led_trigger::groups are added directly to
* the LED device. As this might change in the future, the following
* macros abstract getting the LED device and its trigger_data from the dev
* parameter passed to the attribute accessor functions.
*/
#define led_trigger_get_led(dev) ((struct led_classdev *)dev_get_drvdata((dev)))
#define led_trigger_get_drvdata(dev) (led_get_trigger_data(led_trigger_get_led(dev)))
ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count);
ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
@ -288,10 +299,16 @@ extern void led_trigger_blink_oneshot(struct led_trigger *trigger,
unsigned long *delay_off,
int invert);
extern void led_trigger_set_default(struct led_classdev *led_cdev);
extern void led_trigger_set(struct led_classdev *led_cdev,
struct led_trigger *trigger);
extern int led_trigger_set(struct led_classdev *led_cdev,
struct led_trigger *trigger);
extern void led_trigger_remove(struct led_classdev *led_cdev);
static inline void led_set_trigger_data(struct led_classdev *led_cdev,
void *trigger_data)
{
led_cdev->trigger_data = trigger_data;
}
static inline void *led_get_trigger_data(struct led_classdev *led_cdev)
{
return led_cdev->trigger_data;
@ -315,6 +332,10 @@ static inline void *led_get_trigger_data(struct led_classdev *led_cdev)
extern void led_trigger_rename_static(const char *name,
struct led_trigger *trig);
#define module_led_trigger(__led_trigger) \
module_driver(__led_trigger, led_trigger_register, \
led_trigger_unregister)
#else
/* Trigger has no members */
@ -334,9 +355,14 @@ static inline void led_trigger_blink_oneshot(struct led_trigger *trigger,
unsigned long *delay_off,
int invert) {}
static inline void led_trigger_set_default(struct led_classdev *led_cdev) {}
static inline void led_trigger_set(struct led_classdev *led_cdev,
struct led_trigger *trigger) {}
static inline int led_trigger_set(struct led_classdev *led_cdev,
struct led_trigger *trigger)
{
return 0;
}
static inline void led_trigger_remove(struct led_classdev *led_cdev) {}
static inline void led_set_trigger_data(struct led_classdev *led_cdev) {}
static inline void *led_get_trigger_data(struct led_classdev *led_cdev)
{
return NULL;