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>
17 #include <asm/system.h>
21 #define LED_STATE_ENABLED 1
22 #define LED_STATE_CLAIMED 2
24 static unsigned int led_state
;
25 static unsigned int hw_led_state
;
27 #define LED_RED GPIO_GPIO(7)
28 #define LED_GREEN GPIO_GPIO(9)
29 #define LED_MASK (LED_RED|LED_GREEN)
31 #define LED_IDLE LED_GREEN
32 #define LED_TIMER LED_RED
34 void badge4_leds_event(led_event_t evt
)
38 local_irq_save(flags
);
43 hw_led_state
= LED_MASK
;
44 led_state
= LED_STATE_ENABLED
;
48 led_state
&= ~LED_STATE_ENABLED
;
52 led_state
|= LED_STATE_CLAIMED
;
53 hw_led_state
= LED_MASK
;
57 led_state
&= ~LED_STATE_CLAIMED
;
58 hw_led_state
= LED_MASK
;
61 #ifdef CONFIG_LEDS_TIMER
63 if (!(led_state
& LED_STATE_CLAIMED
))
64 hw_led_state
^= LED_TIMER
;
68 #ifdef CONFIG_LEDS_CPU
70 /* LED off when system is idle */
71 if (!(led_state
& LED_STATE_CLAIMED
))
72 hw_led_state
&= ~LED_IDLE
;
76 if (!(led_state
& LED_STATE_CLAIMED
))
77 hw_led_state
|= LED_IDLE
;
82 if (!(led_state
& LED_STATE_CLAIMED
))
83 hw_led_state
&= ~LED_RED
;
87 if (!(led_state
& LED_STATE_CLAIMED
))
88 hw_led_state
|= LED_RED
;
92 if (!(led_state
& LED_STATE_CLAIMED
))
93 hw_led_state
&= ~LED_GREEN
;
97 if (!(led_state
& LED_STATE_CLAIMED
))
98 hw_led_state
|= LED_GREEN
;
105 if (led_state
& LED_STATE_ENABLED
) {
107 GPCR
= hw_led_state
^ LED_MASK
;
110 local_irq_restore(flags
);
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