The dependecies for BACKLIGHT_CLASS_DEVICE are defined a bit
strange, but it seems one has to always select both BACKLIGHT_CLASS_DEVICE
and BACKLIGHT_LCD_SUPPORT to avoid this error:
drivers/gpu/drm/tilcdc/tilcdc_panel.c:396:
undefined reference to `of_find_backlight_by_node'
Cc: Rob Clark <robdcl...@gmail.com>
Cc: dri-de...@lists.freedesktop.org
Cc: Dave Airlie <airl...@redhat.com>
Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
drivers/gpu/drm/tilcdc/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/tilcdc/Kconfig b/drivers/gpu/drm/tilcdc/Kconfig
index e461e99..7a4d101 100644
--- a/drivers/gpu/drm/tilcdc/Kconfig
+++ b/drivers/gpu/drm/tilcdc/Kconfig
@@ -6,6 +6,7 @@ config DRM_TILCDC
select DRM_GEM_CMA_HELPER
select VIDEOMODE_HELPERS
select BACKLIGHT_CLASS_DEVICE
+ select BACKLIGHT_LCD_SUPPORT
help
Choose this option if you have an TI SoC with LCDC display
controller, for example AM33xx in beagle-bone, DA8xx, or
--
1.8.1.2
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