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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-sa1100/leds-badge4.c | |
3 | * | |
4 | * Author: Christopher Hoover <ch@hpl.hp.com> | |
5 | * Copyright (C) 2002 Hewlett-Packard Company | |
6 | * | |
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. | |
10 | * | |
11 | */ | |
12 | ||
1da177e4 LT |
13 | #include <linux/init.h> |
14 | ||
a09e64fb | 15 | #include <mach/hardware.h> |
1da177e4 | 16 | #include <asm/leds.h> |
1da177e4 LT |
17 | |
18 | #include "leds.h" | |
19 | ||
20 | #define LED_STATE_ENABLED 1 | |
21 | #define LED_STATE_CLAIMED 2 | |
22 | ||
23 | static unsigned int led_state; | |
24 | static unsigned int hw_led_state; | |
25 | ||
26 | #define LED_RED GPIO_GPIO(7) | |
27 | #define LED_GREEN GPIO_GPIO(9) | |
28 | #define LED_MASK (LED_RED|LED_GREEN) | |
29 | ||
30 | #define LED_IDLE LED_GREEN | |
31 | #define LED_TIMER LED_RED | |
32 | ||
33 | void badge4_leds_event(led_event_t evt) | |
34 | { | |
35 | unsigned long flags; | |
36 | ||
37 | local_irq_save(flags); | |
38 | ||
39 | switch (evt) { | |
40 | case led_start: | |
41 | GPDR |= LED_MASK; | |
42 | hw_led_state = LED_MASK; | |
43 | led_state = LED_STATE_ENABLED; | |
44 | break; | |
45 | ||
46 | case led_stop: | |
47 | led_state &= ~LED_STATE_ENABLED; | |
48 | break; | |
49 | ||
50 | case led_claim: | |
51 | led_state |= LED_STATE_CLAIMED; | |
52 | hw_led_state = LED_MASK; | |
53 | break; | |
54 | ||
55 | case led_release: | |
56 | led_state &= ~LED_STATE_CLAIMED; | |
57 | hw_led_state = LED_MASK; | |
58 | break; | |
59 | ||
60 | #ifdef CONFIG_LEDS_TIMER | |
61 | case led_timer: | |
62 | if (!(led_state & LED_STATE_CLAIMED)) | |
63 | hw_led_state ^= LED_TIMER; | |
64 | break; | |
65 | #endif | |
66 | ||
67 | #ifdef CONFIG_LEDS_CPU | |
68 | case led_idle_start: | |
69 | /* LED off when system is idle */ | |
70 | if (!(led_state & LED_STATE_CLAIMED)) | |
71 | hw_led_state &= ~LED_IDLE; | |
72 | break; | |
73 | ||
74 | case led_idle_end: | |
75 | if (!(led_state & LED_STATE_CLAIMED)) | |
76 | hw_led_state |= LED_IDLE; | |
77 | break; | |
78 | #endif | |
79 | ||
80 | case led_red_on: | |
81 | if (!(led_state & LED_STATE_CLAIMED)) | |
82 | hw_led_state &= ~LED_RED; | |
83 | break; | |
84 | ||
85 | case led_red_off: | |
86 | if (!(led_state & LED_STATE_CLAIMED)) | |
87 | hw_led_state |= LED_RED; | |
88 | break; | |
89 | ||
90 | case led_green_on: | |
91 | if (!(led_state & LED_STATE_CLAIMED)) | |
92 | hw_led_state &= ~LED_GREEN; | |
93 | break; | |
94 | ||
95 | case led_green_off: | |
96 | if (!(led_state & LED_STATE_CLAIMED)) | |
97 | hw_led_state |= LED_GREEN; | |
98 | break; | |
99 | ||
100 | default: | |
101 | break; | |
102 | } | |
103 | ||
104 | if (led_state & LED_STATE_ENABLED) { | |
105 | GPSR = hw_led_state; | |
106 | GPCR = hw_led_state ^ LED_MASK; | |
107 | } | |
108 | ||
109 | local_irq_restore(flags); | |
110 | } |