1 files changed, 140 insertions, 0 deletions
diff --git a/arch/arm/mach-footbridge/ebsa285-leds.c b/arch/arm/mach-footbridge/ebsa285-leds.c
new file mode 100644
index 0000000..2c7c363
--- /dev/null
+++ b/arch/arm/mach-footbridge/ebsa285-leds.c
@@ -0,0 +1,140 @@
+/*
+ *  linux/arch/arm/mach-footbridge/ebsa285-leds.c
+ *
+ *  Copyright (C) 1998-1999 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-285 control routines.
+ *
+ * The EBSA-285 uses the leds as follows:
+ *  - Green - toggles state every 50 timer interrupts
+ *  - Amber - On if system is not idle
+ *  - Red   - currently unused
+ *
+ * Changelog:
+ *   02-05-1999	RMK	Various cleanups
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+
+#include <asm/hardware.h>
+#include <asm/leds.h>
+#include <asm/mach-types.h>
+#include <asm/system.h>
+
+#define LED_STATE_ENABLED	1
+#define LED_STATE_CLAIMED	2
+static char led_state;
+static char hw_led_state;
+
+static DEFINE_SPINLOCK(leds_lock);
+
+static void ebsa285_leds_event(led_event_t evt)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&leds_lock, flags);
+
+	switch (evt) {
+	case led_start:
+		hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN;
+#ifndef CONFIG_LEDS_CPU
+		hw_led_state |= XBUS_LED_AMBER;
+#endif
+		led_state |= LED_STATE_ENABLED;
+		break;
+
+	case led_stop:
+		led_state &= ~LED_STATE_ENABLED;
+		break;
+
+	case led_claim:
+		led_state |= LED_STATE_CLAIMED;
+		hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN | XBUS_LED_AMBER;
+		break;
+
+	case led_release:
+		led_state &= ~LED_STATE_CLAIMED;
+		hw_led_state = XBUS_LED_RED | XBUS_LED_GREEN | XBUS_LED_AMBER;
+		break;
+
+#ifdef CONFIG_LEDS_TIMER
+	case led_timer:
+		if (!(led_state & LED_STATE_CLAIMED))
+			hw_led_state ^= XBUS_LED_GREEN;
+		break;
+#endif
+
+#ifdef CONFIG_LEDS_CPU
+	case led_idle_start:
+		if (!(led_state & LED_STATE_CLAIMED))
+			hw_led_state |= XBUS_LED_AMBER;
+		break;
+
+	case led_idle_end:
+		if (!(led_state & LED_STATE_CLAIMED))
+			hw_led_state &= ~XBUS_LED_AMBER;
+		break;
+#endif
+
+	case led_halted:
+		if (!(led_state & LED_STATE_CLAIMED))
+			hw_led_state &= ~XBUS_LED_RED;
+		break;
+
+	case led_green_on:
+		if (led_state & LED_STATE_CLAIMED)
+			hw_led_state &= ~XBUS_LED_GREEN;
+		break;
+
+	case led_green_off:
+		if (led_state & LED_STATE_CLAIMED)
+			hw_led_state |= XBUS_LED_GREEN;
+		break;
+
+	case led_amber_on:
+		if (led_state & LED_STATE_CLAIMED)
+			hw_led_state &= ~XBUS_LED_AMBER;
+		break;
+
+	case led_amber_off:
+		if (led_state & LED_STATE_CLAIMED)
+			hw_led_state |= XBUS_LED_AMBER;
+		break;
+
+	case led_red_on:
+		if (led_state & LED_STATE_CLAIMED)
+			hw_led_state &= ~XBUS_LED_RED;
+		break;
+
+	case led_red_off:
+		if (led_state & LED_STATE_CLAIMED)
+			hw_led_state |= XBUS_LED_RED;
+		break;
+
+	default:
+		break;
+	}
+
+	if  (led_state & LED_STATE_ENABLED)
+		*XBUS_LEDS = hw_led_state;
+
+	spin_unlock_irqrestore(&leds_lock, flags);
+}
+
+static int __init leds_init(void)
+{
+	if (machine_is_ebsa285() || machine_is_co285())
+		leds_event = ebsa285_leds_event;
+
+	leds_event(led_start);
+
+	return 0;
+}
+
+__initcall(leds_init);