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