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52 lines
1021 B
52 lines
1021 B
20 years ago
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/*
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* linux/arch/arm/mach-ebsa110/leds.c
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*
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* Copyright (C) 1998 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* EBSA-110 LED control routines. We use the led as follows:
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*
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* - Red - toggles state every 50 timer interrupts
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*/
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <linux/init.h>
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#include <asm/hardware.h>
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#include <asm/leds.h>
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#include <asm/system.h>
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#include <asm/mach-types.h>
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static spinlock_t leds_lock;
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static void ebsa110_leds_event(led_event_t ledevt)
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{
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unsigned long flags;
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spin_lock_irqsave(&leds_lock, flags);
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switch(ledevt) {
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case led_timer:
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*(volatile unsigned char *)SOFT_BASE ^= 128;
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break;
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default:
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break;
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}
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spin_unlock_irqrestore(&leds_lock, flags);
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}
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static int __init leds_init(void)
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{
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if (machine_is_ebsa110())
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leds_event = ebsa110_leds_event;
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return 0;
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}
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__initcall(leds_init);
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