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| author | David Lechner <david@lechnology.com> | 2016-09-16 21:16:48 +0200 |
|---|---|---|
| committer | Jacek Anaszewski <j.anaszewski@samsung.com> | 2016-11-22 12:07:02 +0100 |
| commit | e381322b0190c1253d347de3f28b5c37756fb651 (patch) | |
| tree | 792a2bc1695cae581e152565e95127405424f5c6 /drivers/leds/Kconfig | |
| parent | Linux 4.9-rc1 (diff) | |
| download | linux-e381322b0190c1253d347de3f28b5c37756fb651.tar.xz linux-e381322b0190c1253d347de3f28b5c37756fb651.zip | |
leds: Introduce userspace LED class driver
This driver creates a userspace leds driver similar to uinput.
New LEDs are created by opening /dev/uleds and writing a uleds_user_dev
struct. A new LED class device is registered with the name given in the
struct. Reading will return a single byte that is the current brightness.
The poll() syscall is also supported. It will be triggered whenever the
brightness changes. Closing the file handle to /dev/uleds will remove
the leds class device.
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Diffstat (limited to 'drivers/leds/Kconfig')
| -rw-r--r-- | drivers/leds/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 7a628c6516f6..5fd3f4ca0c3c 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -659,6 +659,14 @@ config LEDS_MLXCPLD This option enabled support for the LEDs on the Mellanox boards. Say Y to enabled these. +config LEDS_USER + tristate "Userspace LED support" + depends on LEDS_CLASS + help + This option enables support for userspace LEDs. Say 'y' to enable this + support in kernel. To compile this driver as a module, choose 'm' here: + the module will be called uleds. + comment "LED Triggers" source "drivers/leds/trigger/Kconfig" |