Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-sa1100/leds-cerf.c | |
3 | * | |
4 | * Author: ??? | |
5 | */ | |
1da177e4 LT |
6 | #include <linux/init.h> |
7 | ||
a09e64fb | 8 | #include <mach/hardware.h> |
1da177e4 LT |
9 | #include <asm/leds.h> |
10 | #include <asm/system.h> | |
11 | ||
12 | #include "leds.h" | |
13 | ||
14 | ||
15 | #define LED_STATE_ENABLED 1 | |
16 | #define LED_STATE_CLAIMED 2 | |
17 | ||
18 | static unsigned int led_state; | |
19 | static unsigned int hw_led_state; | |
20 | ||
21 | #define LED_D0 GPIO_GPIO(0) | |
22 | #define LED_D1 GPIO_GPIO(1) | |
23 | #define LED_D2 GPIO_GPIO(2) | |
24 | #define LED_D3 GPIO_GPIO(3) | |
25 | #define LED_MASK (LED_D0|LED_D1|LED_D2|LED_D3) | |
26 | ||
27 | void cerf_leds_event(led_event_t evt) | |
28 | { | |
29 | unsigned long flags; | |
30 | ||
31 | local_irq_save(flags); | |
32 | ||
33 | switch (evt) { | |
34 | case led_start: | |
35 | hw_led_state = LED_MASK; | |
36 | led_state = LED_STATE_ENABLED; | |
37 | break; | |
38 | ||
39 | case led_stop: | |
40 | led_state &= ~LED_STATE_ENABLED; | |
41 | break; | |
42 | ||
43 | case led_claim: | |
44 | led_state |= LED_STATE_CLAIMED; | |
45 | hw_led_state = LED_MASK; | |
46 | break; | |
47 | case led_release: | |
48 | led_state &= ~LED_STATE_CLAIMED; | |
49 | hw_led_state = LED_MASK; | |
50 | break; | |
51 | ||
52 | #ifdef CONFIG_LEDS_TIMER | |
53 | case led_timer: | |
54 | if (!(led_state & LED_STATE_CLAIMED)) | |
55 | hw_led_state ^= LED_D0; | |
56 | break; | |
57 | #endif | |
58 | ||
59 | #ifdef CONFIG_LEDS_CPU | |
60 | case led_idle_start: | |
61 | if (!(led_state & LED_STATE_CLAIMED)) | |
62 | hw_led_state &= ~LED_D1; | |
63 | break; | |
64 | ||
65 | case led_idle_end: | |
66 | if (!(led_state & LED_STATE_CLAIMED)) | |
67 | hw_led_state |= LED_D1; | |
68 | break; | |
69 | #endif | |
70 | case led_green_on: | |
71 | if (!(led_state & LED_STATE_CLAIMED)) | |
72 | hw_led_state &= ~LED_D2; | |
73 | break; | |
74 | ||
75 | case led_green_off: | |
76 | if (!(led_state & LED_STATE_CLAIMED)) | |
77 | hw_led_state |= LED_D2; | |
78 | break; | |
79 | ||
80 | case led_amber_on: | |
81 | if (!(led_state & LED_STATE_CLAIMED)) | |
82 | hw_led_state &= ~LED_D3; | |
83 | break; | |
84 | ||
85 | case led_amber_off: | |
86 | if (!(led_state & LED_STATE_CLAIMED)) | |
87 | hw_led_state |= LED_D3; | |
88 | break; | |
89 | ||
90 | case led_red_on: | |
91 | if (!(led_state & LED_STATE_CLAIMED)) | |
92 | hw_led_state &= ~LED_D1; | |
93 | break; | |
94 | ||
95 | case led_red_off: | |
96 | if (!(led_state & LED_STATE_CLAIMED)) | |
97 | hw_led_state |= LED_D1; | |
98 | break; | |
99 | ||
100 | default: | |
101 | break; | |
102 | } | |
103 | ||
104 | if (led_state & LED_STATE_ENABLED) { | |
105 | GPSR = hw_led_state; | |
106 | GPCR = hw_led_state ^ LED_MASK; | |
107 | } | |
108 | ||
109 | local_irq_restore(flags); | |
110 | } |