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authorRichard Purdie <rpurdie@rpsys.net>2006-03-31 02:31:04 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-31 12:18:56 -0800
commitc72a1d608dd0eb3d553a08bfdf1c0041bebaa8a0 (patch)
tree56715f0e0af8a9c33725f3db2f14cf7f870ad46d /drivers/leds/leds.h
parent75c1d31d9ea71025b73430c696b727e8aa15872d (diff)
downloadop-kernel-dev-c72a1d608dd0eb3d553a08bfdf1c0041bebaa8a0.zip
op-kernel-dev-c72a1d608dd0eb3d553a08bfdf1c0041bebaa8a0.tar.gz
[PATCH] LED: add LED class
Add the foundations of a new LEDs subsystem. This patch adds a class which presents LED devices within sysfs and allows their brightness to be controlled. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/leds/leds.h')
-rw-r--r--drivers/leds/leds.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h
new file mode 100644
index 0000000..d26ca2f
--- /dev/null
+++ b/drivers/leds/leds.h
@@ -0,0 +1,31 @@
+/*
+ * LED Core
+ *
+ * Copyright 2005 Openedhand Ltd.
+ *
+ * Author: Richard Purdie <rpurdie@openedhand.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#ifndef __LEDS_H_INCLUDED
+#define __LEDS_H_INCLUDED
+
+#include <linux/leds.h>
+
+static inline void led_set_brightness(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ if (value > LED_FULL)
+ value = LED_FULL;
+ led_cdev->brightness = value;
+ if (!(led_cdev->flags & LED_SUSPENDED))
+ led_cdev->brightness_set(led_cdev, value);
+}
+
+extern rwlock_t leds_list_lock;
+extern struct list_head leds_list;
+
+#endif /* __LEDS_H_INCLUDED */
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