Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-pxa/leds-idp.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 | * Macros for actual LED manipulation should be in machine specific | |
11 | * files in this 'mach' directory. | |
12 | */ | |
13 | ||
14 | ||
15 | #include <linux/config.h> | |
16 | #include <linux/init.h> | |
17 | ||
18 | #include <asm/hardware.h> | |
19 | #include <asm/leds.h> | |
20 | #include <asm/system.h> | |
21 | ||
22 | #include <asm/arch/pxa-regs.h> | |
23 | #include <asm/arch/idp.h> | |
24 | ||
25 | #include "leds.h" | |
26 | ||
27 | #define LED_STATE_ENABLED 1 | |
28 | #define LED_STATE_CLAIMED 2 | |
29 | ||
30 | static unsigned int led_state; | |
31 | static unsigned int hw_led_state; | |
32 | ||
33 | void idp_leds_event(led_event_t evt) | |
34 | { | |
35 | unsigned long flags; | |
36 | ||
37 | local_irq_save(flags); | |
38 | ||
39 | switch (evt) { | |
40 | case led_start: | |
41 | hw_led_state = IDP_HB_LED | IDP_BUSY_LED; | |
42 | led_state = LED_STATE_ENABLED; | |
43 | break; | |
44 | ||
45 | case led_stop: | |
46 | led_state &= ~LED_STATE_ENABLED; | |
47 | break; | |
48 | ||
49 | case led_claim: | |
50 | led_state |= LED_STATE_CLAIMED; | |
51 | hw_led_state = IDP_HB_LED | IDP_BUSY_LED; | |
52 | break; | |
53 | ||
54 | case led_release: | |
55 | led_state &= ~LED_STATE_CLAIMED; | |
56 | hw_led_state = IDP_HB_LED | IDP_BUSY_LED; | |
57 | break; | |
58 | ||
59 | #ifdef CONFIG_LEDS_TIMER | |
60 | case led_timer: | |
61 | if (!(led_state & LED_STATE_CLAIMED)) | |
62 | hw_led_state ^= IDP_HB_LED; | |
63 | break; | |
64 | #endif | |
65 | ||
66 | #ifdef CONFIG_LEDS_CPU | |
67 | case led_idle_start: | |
68 | if (!(led_state & LED_STATE_CLAIMED)) | |
69 | hw_led_state &= ~IDP_BUSY_LED; | |
70 | break; | |
71 | ||
72 | case led_idle_end: | |
73 | if (!(led_state & LED_STATE_CLAIMED)) | |
74 | hw_led_state |= IDP_BUSY_LED; | |
75 | break; | |
76 | #endif | |
77 | ||
78 | case led_halted: | |
79 | break; | |
80 | ||
81 | case led_green_on: | |
82 | if (led_state & LED_STATE_CLAIMED) | |
83 | hw_led_state |= IDP_HB_LED; | |
84 | break; | |
85 | ||
86 | case led_green_off: | |
87 | if (led_state & LED_STATE_CLAIMED) | |
88 | hw_led_state &= ~IDP_HB_LED; | |
89 | break; | |
90 | ||
91 | case led_amber_on: | |
92 | break; | |
93 | ||
94 | case led_amber_off: | |
95 | break; | |
96 | ||
97 | case led_red_on: | |
98 | if (led_state & LED_STATE_CLAIMED) | |
99 | hw_led_state |= IDP_BUSY_LED; | |
100 | break; | |
101 | ||
102 | case led_red_off: | |
103 | if (led_state & LED_STATE_CLAIMED) | |
104 | hw_led_state &= ~IDP_BUSY_LED; | |
105 | break; | |
106 | ||
107 | default: | |
108 | break; | |
109 | } | |
110 | ||
111 | if (led_state & LED_STATE_ENABLED) | |
112 | IDP_CPLD_LED_CONTROL = ( (IDP_CPLD_LED_CONTROL | IDP_LEDS_MASK) & ~hw_led_state); | |
113 | else | |
114 | IDP_CPLD_LED_CONTROL |= IDP_LEDS_MASK; | |
115 | ||
116 | local_irq_restore(flags); | |
117 | } |