/* * linux/arch/arm/mach-ebsa110/leds.c * * Copyright (C) 1998 Russell King * * 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. * * EBSA-110 LED control routines. We use the led as follows: * * - Red - toggles state every 50 timer interrupts */ #include <linux/module.h> #include <linux/spinlock.h> #include <linux/init.h> #include <asm/hardware.h> #include <asm/leds.h> #include <asm/system.h> #include <asm/mach-types.h> static spinlock_t leds_lock; static void ebsa110_leds_event(led_event_t ledevt) { unsigned long flags; spin_lock_irqsave(&leds_lock, flags); switch(ledevt) { case led_timer: *(volatile unsigned char *)SOFT_BASE ^= 128; break; default: break; } spin_unlock_irqrestore(&leds_lock, flags); } static int __init leds_init(void) { if (machine_is_ebsa110()) leds_event = ebsa110_leds_event; return 0; } __initcall(leds_init);