[PATCH -next 0/2] leds: add substitutes for /sys/class/leds/<led>/trigger

[Akinobu Mita]

Reading /sys/class/leds/<led>/trigger returns all available LED triggers.
However, this violates the "one value per file" rule of sysfs.

This series provides a new /sys/devices/virtual/led-trigger/ directory and
/sys/class/leds/<led>/current-trigger. The new api follows the "one value
per file" rule of sysfs.

This series was previously developed as a part of the series "leds: fix
/sys/class/leds/<led>/trigger and add new api" [1].  Now this version
only contains the new api part.

[1] https://lore.kernel.org/r/1567946472-10075-1-git-send-email-akinobu.mita@xxxxxxxxx

Akinobu Mita (2):
  leds: add /sys/devices/virtual/led-trigger/
  leds: add /sys/class/leds/<led>/current-trigger

 Documentation/ABI/testing/sysfs-class-led          | 13 +++
 .../ABI/testing/sysfs-devices-virtual-led-trigger  |  8 ++
 drivers/leds/led-class.c                           | 10 +++
 drivers/leds/led-triggers.c                        | 95 +++++++++++++++++++++-
 drivers/leds/leds.h                                |  5 ++
 include/linux/leds.h                               |  3 +
 6 files changed, 130 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-devices-virtual-led-trigger

Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rafael@xxxxxxxxxx>
Cc: Jacek Anaszewski <jacek.anaszewski@xxxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: Dan Murphy <dmurphy@xxxxxx>
-- 
2.7.4