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(parent: 068aab7) | patch
backlight: introduce backlight_device_registered
authorAaron Lu <aaron.lu@intel.com>
Fri, 11 Oct 2013 13:27:43 +0000 (21:27 +0800)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Tue, 15 Oct 2013 23:16:04 +0000 (01:16 +0200)
commit5915a3db0c3983f1cd5e046bf70086c7d0c686d2
treed3f56cdf916f71ac50789abf511ee16b6bc55fe6tree | snapshot (tar.gz zip)
parent068aab7766cf968a8ddb86a6d7c6bbed9d61e353commit | diff
backlight: introduce backlight_device_registered

Introduce a new API for modules to query if a specific type of backlight
device has been registered. This is useful for some backlight device
provider module (e.g. ACPI video) to know if a native control
interface(e.g. the interface created by i915) is available and then do
things accordingly (e.g. avoid registering its own on Win8 systems).

Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/video/backlight/backlight.c diff | blob | blame | history
include/linux/backlight.h diff | blob | blame | history