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drm: panel/simple: add backlight dependency

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The simple panel code uses the backlight interface to
find a device, which fails when backlight is disabled:

drivers/built-in.o: In function `panel_simple_platform_probe':
:(.text+0xd3c48): undefined reference to `of_find_backlight_by_node'

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Dave Airlie <airlied@gmail.com>
This commit is contained in:
Arnd Bergmann 2015-01-28 14:48:06 +01:00 committed by Dave Airlie
parent f071b34f3a
commit 83b37eac7c
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/panel/Kconfig
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@ -10,6 +10,7 @@ menu "Display Panels"
config DRM_PANEL_SIMPLE
tristate "support for simple panels"
depends on OF
depends on BACKLIGHT_CLASS_DEVICE
help
DRM panel driver for dumb panels that need at most a regulator and
a GPIO to be powered up. Optionally a backlight can be attached so