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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 LT |
16 | #include <asm/leds.h> |
17 | #include <asm/system.h> | |
18 | ||
19 | #include "leds.h" | |
20 | ||
21 | #define LED_STATE_ENABLED 1 | |
22 | #define LED_STATE_CLAIMED 2 | |
23 | ||
24 | static unsigned int led_state; | |
25 | static unsigned int hw_led_state; | |
26 | ||
27 | #define LED_RED GPIO_GPIO(7) | |
28 | #define LED_GREEN GPIO_GPIO(9) | |
29 | #define LED_MASK (LED_RED|LED_GREEN) | |
30 | ||
31 | #define LED_IDLE LED_GREEN | |
32 | #define LED_TIMER LED_RED | |
33 | ||
34 | void badge4_leds_event(led_event_t evt) | |
35 | { | |
36 | unsigned long flags; | |
37 | ||
38 | local_irq_save(flags); | |
39 | ||
40 | switch (evt) { | |
41 | case led_start: | |
42 | GPDR |= LED_MASK; | |
43 | hw_led_state = LED_MASK; | |
44 | led_state = LED_STATE_ENABLED; | |
45 | break; | |
46 | ||
47 | case led_stop: | |
48 | led_state &= ~LED_STATE_ENABLED; | |
49 | break; | |
50 | ||
51 | case led_claim: | |
52 | led_state |= LED_STATE_CLAIMED; | |
53 | hw_led_state = LED_MASK; | |
54 | break; | |
55 | ||
56 | case led_release: | |
57 | led_state &= ~LED_STATE_CLAIMED; | |
58 | hw_led_state = LED_MASK; | |
59 | break; | |
60 | ||
61 | #ifdef CONFIG_LEDS_TIMER | |
62 | case led_timer: | |
63 | if (!(led_state & LED_STATE_CLAIMED)) | |
64 | hw_led_state ^= LED_TIMER; | |
65 | break; | |
66 | #endif | |
67 | ||
68 | #ifdef CONFIG_LEDS_CPU | |
69 | case led_idle_start: | |
70 | /* LED off when system is idle */ | |
71 | if (!(led_state & LED_STATE_CLAIMED)) | |
72 | hw_led_state &= ~LED_IDLE; | |
73 | break; | |
74 | ||
75 | case led_idle_end: | |
76 | if (!(led_state & LED_STATE_CLAIMED)) | |
77 | hw_led_state |= LED_IDLE; | |
78 | break; | |
79 | #endif | |
80 | ||
81 | case led_red_on: | |
82 | if (!(led_state & LED_STATE_CLAIMED)) | |
83 | hw_led_state &= ~LED_RED; | |
84 | break; | |
85 | ||
86 | case led_red_off: | |
87 | if (!(led_state & LED_STATE_CLAIMED)) | |
88 | hw_led_state |= LED_RED; | |
89 | break; | |
90 | ||
91 | case led_green_on: | |
92 | if (!(led_state & LED_STATE_CLAIMED)) | |
93 | hw_led_state &= ~LED_GREEN; | |
94 | break; | |
95 | ||
96 | case led_green_off: | |
97 | if (!(led_state & LED_STATE_CLAIMED)) | |
98 | hw_led_state |= LED_GREEN; | |
99 | break; | |
100 | ||
101 | default: | |
102 | break; | |
103 | } | |
104 | ||
105 | if (led_state & LED_STATE_ENABLED) { | |
106 | GPSR = hw_led_state; | |
107 | GPCR = hw_led_state ^ LED_MASK; | |
108 | } | |
109 | ||
110 | local_irq_restore(flags); | |
111 | } |