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-rw-r--r--arch/arm/mach-ebsa110/leds.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm/mach-ebsa110/leds.c b/arch/arm/mach-ebsa110/leds.c
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+++ b/arch/arm/mach-ebsa110/leds.c
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+/*
+ * 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);