diff --git a/include/asm-ppc/backlight.h b/include/asm-ppc/backlight.h
new file mode 100644
index 0000000..3a1c3de
--- /dev/null
+++ b/include/asm-ppc/backlight.h
@@ -0,0 +1,30 @@
+/*
+ * Routines for handling backlight control on PowerBooks
+ *
+ * For now, implementation resides in arch/ppc/kernel/pmac_support.c
+ *
+ */
+#ifdef __KERNEL__
+#ifndef __ASM_PPC_BACKLIGHT_H
+#define __ASM_PPC_BACKLIGHT_H
+
+/* Abstract values */
+#define BACKLIGHT_OFF	0
+#define BACKLIGHT_MIN	1
+#define BACKLIGHT_MAX	0xf
+
+struct backlight_controller {
+	int (*set_enable)(int enable, int level, void *data);
+	int (*set_level)(int level, void *data);
+};
+
+extern void register_backlight_controller(struct backlight_controller *ctrler, void *data, char *type);
+extern void unregister_backlight_controller(struct backlight_controller *ctrler, void *data);
+
+extern int set_backlight_enable(int enable);
+extern int get_backlight_enable(void);
+extern int set_backlight_level(int level);
+extern int get_backlight_level(void);
+
+#endif
+#endif /* __KERNEL__ */