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Diffstat (limited to 'arch/arm/mach-sa1100/leds-badge4.c')
-rw-r--r--arch/arm/mach-sa1100/leds-badge4.c112
1 files changed, 112 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/leds-badge4.c b/arch/arm/mach-sa1100/leds-badge4.c
new file mode 100644
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--- /dev/null
+++ b/arch/arm/mach-sa1100/leds-badge4.c
@@ -0,0 +1,112 @@
+/*
+ * linux/arch/arm/mach-sa1100/leds-badge4.c
+ *
+ * Author: Christopher Hoover <ch@hpl.hp.com>
+ * Copyright (C) 2002 Hewlett-Packard Company
+ *
+ * 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.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+
+#include <asm/hardware.h>
+#include <asm/leds.h>
+#include <asm/system.h>
+
+#include "leds.h"
+
+#define LED_STATE_ENABLED 1
+#define LED_STATE_CLAIMED 2
+
+static unsigned int led_state;
+static unsigned int hw_led_state;
+
+#define LED_RED GPIO_GPIO(7)
+#define LED_GREEN GPIO_GPIO(9)
+#define LED_MASK (LED_RED|LED_GREEN)
+
+#define LED_IDLE LED_GREEN
+#define LED_TIMER LED_RED
+
+void badge4_leds_event(led_event_t evt)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ switch (evt) {
+ case led_start:
+ GPDR |= LED_MASK;
+ hw_led_state = LED_MASK;
+ 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 = LED_MASK;
+ break;
+
+ case led_release:
+ led_state &= ~LED_STATE_CLAIMED;
+ hw_led_state = LED_MASK;
+ break;
+
+#ifdef CONFIG_LEDS_TIMER
+ case led_timer:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state ^= LED_TIMER;
+ break;
+#endif
+
+#ifdef CONFIG_LEDS_CPU
+ case led_idle_start:
+ /* LED off when system is idle */
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state &= ~LED_IDLE;
+ break;
+
+ case led_idle_end:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state |= LED_IDLE;
+ break;
+#endif
+
+ case led_red_on:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state &= ~LED_RED;
+ break;
+
+ case led_red_off:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state |= LED_RED;
+ break;
+
+ case led_green_on:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state &= ~LED_GREEN;
+ break;
+
+ case led_green_off:
+ if (!(led_state & LED_STATE_CLAIMED))
+ hw_led_state |= LED_GREEN;
+ break;
+
+ default:
+ break;
+ }
+
+ if (led_state & LED_STATE_ENABLED) {
+ GPSR = hw_led_state;
+ GPCR = hw_led_state ^ LED_MASK;
+ }
+
+ local_irq_restore(flags);
+}
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