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authorThierry Reding <thierry.reding@avionic-design.de>2012-12-18 04:01:06 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-18 05:15:16 +0400
commit762a936fba7bd9225ca9a96e4860f6969b6b5670 (patch)
treeafb3f60c95eb8d21573e80683c61bb43ebb58ffe /include/linux/backlight.h
parentfb08cd9b111c6a922f468ef5e33acc67eb91d40b (diff)
downloadlinux-762a936fba7bd9225ca9a96e4860f6969b6b5670.tar.xz
backlight: add of_find_backlight_by_node()
This function finds the struct backlight_device for a given device tree node. A dummy function is provided so that it safely compiles out if OF support is disabled. [akpm@linux-foundation.org: Don't use IS_ENABLED(CONFIG_OF)] Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Grant Likely <grant.likely@secretlab.ca> Cc: Thierry Reding <thierry.reding@avionic-design.de> Reviewed-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/backlight.h')
-rw-r--r--include/linux/backlight.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index 5ffc6dda4675..da9a0825e007 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -134,4 +134,14 @@ struct generic_bl_info {
void (*kick_battery)(void);
};
+#ifdef CONFIG_OF
+struct backlight_device *of_find_backlight_by_node(struct device_node *node);
+#else
+static inline struct backlight_device *
+of_find_backlight_by_node(struct device_node *node)
+{
+ return NULL;
+}
+#endif
+
#endif