2 * linux/arch/arm/mach-ebsa110/leds.c
4 * Copyright (C) 1998 Russell King
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * EBSA-110 LED control routines. We use the led as follows:
12 * - Red - toggles state every 50 timer interrupts
14 #include <linux/module.h>
15 #include <linux/spinlock.h>
16 #include <linux/init.h>
18 #include <mach/hardware.h>
20 #include <asm/mach-types.h>
22 static spinlock_t leds_lock
;
24 static void ebsa110_leds_event(led_event_t ledevt
)
28 spin_lock_irqsave(&leds_lock
, flags
);
32 *(volatile unsigned char *)SOFT_BASE
^= 128;
39 spin_unlock_irqrestore(&leds_lock
, flags
);
42 static int __init
leds_init(void)
44 if (machine_is_ebsa110())
45 leds_event
= ebsa110_leds_event
;
50 __initcall(leds_init
);