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-rw-r--r--arch/powerpc/include/asm/backlight.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/backlight.h b/arch/powerpc/include/asm/backlight.h
new file mode 100644
index 0000000000..1b5eab62ed
--- /dev/null
+++ b/arch/powerpc/include/asm/backlight.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Routines for handling backlight control on PowerBooks
+ *
+ * For now, implementation resides in
+ * arch/powerpc/platforms/powermac/backlight.c
+ *
+ */
+#ifndef __ASM_POWERPC_BACKLIGHT_H
+#define __ASM_POWERPC_BACKLIGHT_H
+#ifdef __KERNEL__
+
+#include <linux/fb.h>
+#include <linux/mutex.h>
+
+/* For locking instructions, see the implementation file */
+extern struct backlight_device *pmac_backlight;
+extern struct mutex pmac_backlight_mutex;
+
+extern int pmac_backlight_curve_lookup(struct fb_info *info, int value);
+
+extern int pmac_has_backlight_type(const char *type);
+
+extern void pmac_backlight_key(int direction);
+static inline void pmac_backlight_key_up(void)
+{
+ pmac_backlight_key(0);
+}
+static inline void pmac_backlight_key_down(void)
+{
+ pmac_backlight_key(1);
+}
+
+extern void pmac_backlight_set_legacy_brightness_pmu(int brightness);
+extern int pmac_backlight_set_legacy_brightness(int brightness);
+extern int pmac_backlight_get_legacy_brightness(void);
+
+extern void pmac_backlight_enable(void);
+extern void pmac_backlight_disable(void);
+
+#endif /* __KERNEL__ */
+#endif