display: add interface to convert light sensing value to brightness

deviced will use the interface to convert the light sensing value
to the brightness value to change.

Change-Id: I89d0306d654273850067ee56216dae3ae84c65ef
Signed-off-by: taeyoung <ty317.kim@samsung.com>

diff --git a/hw/display.h b/hw/display.h
index 2dbdf468766068d71071dcd1154cdaeb258ada64..83ec3eddb76f5a3ed31d92f3406701c2d9f2afe6 100644 (file)
--- a/hw/display.h
+++ b/hw/display.h
@@ -67,6 +67,9 @@ struct display_device {
        int (*get_brightness)(int *brightness);
        int (*set_brightness)(int brightness);
 
+       /* Control display brightness by sensor */
+       int (*get_auto_brightness)(float lmax, float lmin, float light, int *brightness);
+
        /* Control display state */
        int (*get_state)(enum display_state *state);
        int (*set_state)(enum display_state state);