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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-pxa/leds-lubbock.c | |
3 | * | |
4 | * Copyright (C) 2000 John Dorsey <john+@cs.cmu.edu> | |
5 | * | |
6 | * Copyright (c) 2001 Jeff Sutherland <jeffs@accelent.com> | |
7 | * | |
8 | * Original (leds-footbridge.c) by Russell King | |
9 | * | |
10 | * Major surgery on April 2004 by Nicolas Pitre for less global | |
11 | * namespace collision. Mostly adapted the Mainstone version. | |
12 | */ | |
13 | ||
1da177e4 LT |
14 | #include <linux/init.h> |
15 | ||
a09e64fb | 16 | #include <mach/hardware.h> |
1da177e4 LT |
17 | #include <asm/leds.h> |
18 | #include <asm/system.h> | |
51c62982 | 19 | #include <mach/pxa25x.h> |
a09e64fb | 20 | #include <mach/lubbock.h> |
1da177e4 LT |
21 | |
22 | #include "leds.h" | |
23 | ||
24 | /* | |
25 | * 8 discrete leds available for general use: | |
26 | * | |
27 | * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays | |
28 | * so be sure to not monkey with them here. | |
29 | */ | |
30 | ||
31 | #define D28 (1 << 0) | |
32 | #define D27 (1 << 1) | |
33 | #define D26 (1 << 2) | |
34 | #define D25 (1 << 3) | |
35 | #define D24 (1 << 4) | |
36 | #define D23 (1 << 5) | |
37 | #define D22 (1 << 6) | |
38 | #define D21 (1 << 7) | |
39 | ||
40 | #define LED_STATE_ENABLED 1 | |
41 | #define LED_STATE_CLAIMED 2 | |
42 | ||
43 | static unsigned int led_state; | |
44 | static unsigned int hw_led_state; | |
45 | ||
46 | void lubbock_leds_event(led_event_t evt) | |
47 | { | |
48 | unsigned long flags; | |
49 | ||
50 | local_irq_save(flags); | |
51 | ||
52 | switch (evt) { | |
53 | case led_start: | |
54 | hw_led_state = 0; | |
55 | led_state = LED_STATE_ENABLED; | |
56 | break; | |
57 | ||
58 | case led_stop: | |
59 | led_state &= ~LED_STATE_ENABLED; | |
60 | break; | |
61 | ||
62 | case led_claim: | |
63 | led_state |= LED_STATE_CLAIMED; | |
64 | hw_led_state = 0; | |
65 | break; | |
66 | ||
67 | case led_release: | |
68 | led_state &= ~LED_STATE_CLAIMED; | |
69 | hw_led_state = 0; | |
70 | break; | |
71 | ||
72 | #ifdef CONFIG_LEDS_TIMER | |
73 | case led_timer: | |
74 | hw_led_state ^= D26; | |
75 | break; | |
76 | #endif | |
77 | ||
78 | #ifdef CONFIG_LEDS_CPU | |
79 | case led_idle_start: | |
80 | hw_led_state &= ~D27; | |
81 | break; | |
82 | ||
83 | case led_idle_end: | |
84 | hw_led_state |= D27; | |
85 | break; | |
86 | #endif | |
87 | ||
88 | case led_halted: | |
89 | break; | |
90 | ||
91 | case led_green_on: | |
92 | hw_led_state |= D21; | |
93 | break; | |
94 | ||
95 | case led_green_off: | |
96 | hw_led_state &= ~D21; | |
97 | break; | |
98 | ||
99 | case led_amber_on: | |
100 | hw_led_state |= D22; | |
101 | break; | |
102 | ||
103 | case led_amber_off: | |
104 | hw_led_state &= ~D22; | |
105 | break; | |
106 | ||
107 | case led_red_on: | |
108 | hw_led_state |= D23; | |
109 | break; | |
110 | ||
111 | case led_red_off: | |
112 | hw_led_state &= ~D23; | |
113 | break; | |
114 | ||
115 | default: | |
116 | break; | |
117 | } | |
118 | ||
119 | if (led_state & LED_STATE_ENABLED) | |
120 | LUB_DISC_BLNK_LED = (LUB_DISC_BLNK_LED | 0xff) & ~hw_led_state; | |
121 | else | |
122 | LUB_DISC_BLNK_LED |= 0xff; | |
123 | ||
124 | local_irq_restore(flags); | |
125 | } |