2 * linux/arch/arm/mach-sa1100/leds-badge4.c
4 * Author: Christopher Hoover <ch@hpl.hp.com>
5 * Copyright (C) 2002 Hewlett-Packard Company
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
13 #include <linux/init.h>
15 #include <mach/hardware.h>
20 #define LED_STATE_ENABLED 1
21 #define LED_STATE_CLAIMED 2
23 static unsigned int led_state;
24 static unsigned int hw_led_state;
26 #define LED_RED GPIO_GPIO(7)
27 #define LED_GREEN GPIO_GPIO(9)
28 #define LED_MASK (LED_RED|LED_GREEN)
30 #define LED_IDLE LED_GREEN
31 #define LED_TIMER LED_RED
33 void badge4_leds_event(led_event_t evt)
37 local_irq_save(flags);
42 hw_led_state = LED_MASK;
43 led_state = LED_STATE_ENABLED;
47 led_state &= ~LED_STATE_ENABLED;
51 led_state |= LED_STATE_CLAIMED;
52 hw_led_state = LED_MASK;
56 led_state &= ~LED_STATE_CLAIMED;
57 hw_led_state = LED_MASK;
60 #ifdef CONFIG_LEDS_TIMER
62 if (!(led_state & LED_STATE_CLAIMED))
63 hw_led_state ^= LED_TIMER;
67 #ifdef CONFIG_LEDS_CPU
69 /* LED off when system is idle */
70 if (!(led_state & LED_STATE_CLAIMED))
71 hw_led_state &= ~LED_IDLE;
75 if (!(led_state & LED_STATE_CLAIMED))
76 hw_led_state |= LED_IDLE;
81 if (!(led_state & LED_STATE_CLAIMED))
82 hw_led_state &= ~LED_RED;
86 if (!(led_state & LED_STATE_CLAIMED))
87 hw_led_state |= LED_RED;
91 if (!(led_state & LED_STATE_CLAIMED))
92 hw_led_state &= ~LED_GREEN;
96 if (!(led_state & LED_STATE_CLAIMED))
97 hw_led_state |= LED_GREEN;
104 if (led_state & LED_STATE_ENABLED) {
106 GPCR = hw_led_state ^ LED_MASK;
109 local_irq_restore(flags);