| /* |
| * 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/arch/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); |