backlight: Allow properties to be passed at registration

Values such as max_brightness should be set before backlights are
registered, but the current API doesn't allow that. Add a parameter to
backlight_device_register and update drivers to ensure that they
set this correctly.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index 21cd866d24cd..4a3d52e545e1 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -103,7 +103,8 @@ static inline void backlight_update_status(struct backlight_device *bd)
 }
 
 extern struct backlight_device *backlight_device_register(const char *name,
-        struct device *dev, void *devdata, const struct backlight_ops *ops);
+        struct device *dev, void *devdata, const struct backlight_ops *ops,
+        const struct backlight_properties *props);
 extern void backlight_device_unregister(struct backlight_device *bd);
 extern void backlight_force_update(struct backlight_device *bd,
                                    enum backlight_update_reason reason);