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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-pxa/leds-mainstone.c | |
3 | * | |
4 | * Author: Nicolas Pitre | |
5 | * Created: Nov 05, 2002 | |
6 | * Copyright: MontaVista Software Inc. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
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 | ||
51c62982 | 19 | #include <mach/pxa27x.h> |
a09e64fb | 20 | #include <mach/mainstone.h> |
1da177e4 LT |
21 | |
22 | #include "leds.h" | |
23 | ||
24 | ||
25 | /* 8 discrete leds available for general use: */ | |
26 | #define D28 (1 << 0) | |
27 | #define D27 (1 << 1) | |
28 | #define D26 (1 << 2) | |
29 | #define D25 (1 << 3) | |
30 | #define D24 (1 << 4) | |
31 | #define D23 (1 << 5) | |
32 | #define D22 (1 << 6) | |
33 | #define D21 (1 << 7) | |
34 | ||
35 | #define LED_STATE_ENABLED 1 | |
36 | #define LED_STATE_CLAIMED 2 | |
37 | ||
38 | static unsigned int led_state; | |
39 | static unsigned int hw_led_state; | |
40 | ||
41 | void mainstone_leds_event(led_event_t evt) | |
42 | { | |
43 | unsigned long flags; | |
44 | ||
45 | local_irq_save(flags); | |
46 | ||
47 | switch (evt) { | |
48 | case led_start: | |
49 | hw_led_state = 0; | |
50 | led_state = LED_STATE_ENABLED; | |
51 | break; | |
52 | ||
53 | case led_stop: | |
54 | led_state &= ~LED_STATE_ENABLED; | |
55 | break; | |
56 | ||
57 | case led_claim: | |
58 | led_state |= LED_STATE_CLAIMED; | |
59 | hw_led_state = 0; | |
60 | break; | |
61 | ||
62 | case led_release: | |
63 | led_state &= ~LED_STATE_CLAIMED; | |
64 | hw_led_state = 0; | |
65 | break; | |
66 | ||
67 | #ifdef CONFIG_LEDS_TIMER | |
68 | case led_timer: | |
69 | hw_led_state ^= D26; | |
70 | break; | |
71 | #endif | |
72 | ||
73 | #ifdef CONFIG_LEDS_CPU | |
74 | case led_idle_start: | |
75 | hw_led_state &= ~D27; | |
76 | break; | |
77 | ||
78 | case led_idle_end: | |
79 | hw_led_state |= D27; | |
80 | break; | |
81 | #endif | |
82 | ||
83 | case led_halted: | |
84 | break; | |
85 | ||
86 | case led_green_on: | |
53b3531b | 87 | hw_led_state |= D21; |
1da177e4 LT |
88 | break; |
89 | ||
90 | case led_green_off: | |
91 | hw_led_state &= ~D21; | |
92 | break; | |
93 | ||
94 | case led_amber_on: | |
53b3531b | 95 | hw_led_state |= D22; |
1da177e4 LT |
96 | break; |
97 | ||
98 | case led_amber_off: | |
99 | hw_led_state &= ~D22; | |
100 | break; | |
101 | ||
102 | case led_red_on: | |
53b3531b | 103 | hw_led_state |= D23; |
1da177e4 LT |
104 | break; |
105 | ||
106 | case led_red_off: | |
107 | hw_led_state &= ~D23; | |
108 | break; | |
109 | ||
110 | default: | |
111 | break; | |
112 | } | |
113 | ||
114 | if (led_state & LED_STATE_ENABLED) | |
115 | MST_LEDCTRL = (MST_LEDCTRL | 0xff) & ~hw_led_state; | |
116 | else | |
117 | MST_LEDCTRL |= 0xff; | |
118 | ||
119 | local_irq_restore(flags); | |
120 | } |