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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 | ||
13 | #include <linux/config.h> | |
14 | #include <linux/init.h> | |
15 | ||
16 | #include <asm/hardware.h> | |
17 | #include <asm/leds.h> | |
18 | #include <asm/system.h> | |
19 | ||
20 | #include <asm/arch/pxa-regs.h> | |
21 | #include <asm/arch/mainstone.h> | |
22 | ||
23 | #include "leds.h" | |
24 | ||
25 | ||
26 | /* 8 discrete leds available for general use: */ | |
27 | #define D28 (1 << 0) | |
28 | #define D27 (1 << 1) | |
29 | #define D26 (1 << 2) | |
30 | #define D25 (1 << 3) | |
31 | #define D24 (1 << 4) | |
32 | #define D23 (1 << 5) | |
33 | #define D22 (1 << 6) | |
34 | #define D21 (1 << 7) | |
35 | ||
36 | #define LED_STATE_ENABLED 1 | |
37 | #define LED_STATE_CLAIMED 2 | |
38 | ||
39 | static unsigned int led_state; | |
40 | static unsigned int hw_led_state; | |
41 | ||
42 | void mainstone_leds_event(led_event_t evt) | |
43 | { | |
44 | unsigned long flags; | |
45 | ||
46 | local_irq_save(flags); | |
47 | ||
48 | switch (evt) { | |
49 | case led_start: | |
50 | hw_led_state = 0; | |
51 | led_state = LED_STATE_ENABLED; | |
52 | break; | |
53 | ||
54 | case led_stop: | |
55 | led_state &= ~LED_STATE_ENABLED; | |
56 | break; | |
57 | ||
58 | case led_claim: | |
59 | led_state |= LED_STATE_CLAIMED; | |
60 | hw_led_state = 0; | |
61 | break; | |
62 | ||
63 | case led_release: | |
64 | led_state &= ~LED_STATE_CLAIMED; | |
65 | hw_led_state = 0; | |
66 | break; | |
67 | ||
68 | #ifdef CONFIG_LEDS_TIMER | |
69 | case led_timer: | |
70 | hw_led_state ^= D26; | |
71 | break; | |
72 | #endif | |
73 | ||
74 | #ifdef CONFIG_LEDS_CPU | |
75 | case led_idle_start: | |
76 | hw_led_state &= ~D27; | |
77 | break; | |
78 | ||
79 | case led_idle_end: | |
80 | hw_led_state |= D27; | |
81 | break; | |
82 | #endif | |
83 | ||
84 | case led_halted: | |
85 | break; | |
86 | ||
87 | case led_green_on: | |
88 | hw_led_state |= D21;; | |
89 | break; | |
90 | ||
91 | case led_green_off: | |
92 | hw_led_state &= ~D21; | |
93 | break; | |
94 | ||
95 | case led_amber_on: | |
96 | hw_led_state |= D22;; | |
97 | break; | |
98 | ||
99 | case led_amber_off: | |
100 | hw_led_state &= ~D22; | |
101 | break; | |
102 | ||
103 | case led_red_on: | |
104 | hw_led_state |= D23;; | |
105 | break; | |
106 | ||
107 | case led_red_off: | |
108 | hw_led_state &= ~D23; | |
109 | break; | |
110 | ||
111 | default: | |
112 | break; | |
113 | } | |
114 | ||
115 | if (led_state & LED_STATE_ENABLED) | |
116 | MST_LEDCTRL = (MST_LEDCTRL | 0xff) & ~hw_led_state; | |
117 | else | |
118 | MST_LEDCTRL |= 0xff; | |
119 | ||
120 | local_irq_restore(flags); | |
121 | } |