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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-ppc/backlight.h
downloadblackbird-obmc-linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
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Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-ppc/backlight.h')
-rw-r--r--include/asm-ppc/backlight.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/include/asm-ppc/backlight.h b/include/asm-ppc/backlight.h
new file mode 100644
index 000000000000..3a1c3dede2a0
--- /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__ */
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