Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-sa1100/leds-cerf.c | |
3 | * | |
4 | * Author: ??? | |
5 | */ | |
6 | #include <linux/config.h> | |
7 | #include <linux/init.h> | |
8 | ||
9 | #include <asm/hardware.h> | |
10 | #include <asm/leds.h> | |
11 | #include <asm/system.h> | |
12 | ||
13 | #include "leds.h" | |
14 | ||
15 | ||
16 | #define LED_STATE_ENABLED 1 | |
17 | #define LED_STATE_CLAIMED 2 | |
18 | ||
19 | static unsigned int led_state; | |
20 | static unsigned int hw_led_state; | |
21 | ||
22 | #define LED_D0 GPIO_GPIO(0) | |
23 | #define LED_D1 GPIO_GPIO(1) | |
24 | #define LED_D2 GPIO_GPIO(2) | |
25 | #define LED_D3 GPIO_GPIO(3) | |
26 | #define LED_MASK (LED_D0|LED_D1|LED_D2|LED_D3) | |
27 | ||
28 | void cerf_leds_event(led_event_t evt) | |
29 | { | |
30 | unsigned long flags; | |
31 | ||
32 | local_irq_save(flags); | |
33 | ||
34 | switch (evt) { | |
35 | case led_start: | |
36 | hw_led_state = LED_MASK; | |
37 | led_state = LED_STATE_ENABLED; | |
38 | break; | |
39 | ||
40 | case led_stop: | |
41 | led_state &= ~LED_STATE_ENABLED; | |
42 | break; | |
43 | ||
44 | case led_claim: | |
45 | led_state |= LED_STATE_CLAIMED; | |
46 | hw_led_state = LED_MASK; | |
47 | break; | |
48 | case led_release: | |
49 | led_state &= ~LED_STATE_CLAIMED; | |
50 | hw_led_state = LED_MASK; | |
51 | break; | |
52 | ||
53 | #ifdef CONFIG_LEDS_TIMER | |
54 | case led_timer: | |
55 | if (!(led_state & LED_STATE_CLAIMED)) | |
56 | hw_led_state ^= LED_D0; | |
57 | break; | |
58 | #endif | |
59 | ||
60 | #ifdef CONFIG_LEDS_CPU | |
61 | case led_idle_start: | |
62 | if (!(led_state & LED_STATE_CLAIMED)) | |
63 | hw_led_state &= ~LED_D1; | |
64 | break; | |
65 | ||
66 | case led_idle_end: | |
67 | if (!(led_state & LED_STATE_CLAIMED)) | |
68 | hw_led_state |= LED_D1; | |
69 | break; | |
70 | #endif | |
71 | case led_green_on: | |
72 | if (!(led_state & LED_STATE_CLAIMED)) | |
73 | hw_led_state &= ~LED_D2; | |
74 | break; | |
75 | ||
76 | case led_green_off: | |
77 | if (!(led_state & LED_STATE_CLAIMED)) | |
78 | hw_led_state |= LED_D2; | |
79 | break; | |
80 | ||
81 | case led_amber_on: | |
82 | if (!(led_state & LED_STATE_CLAIMED)) | |
83 | hw_led_state &= ~LED_D3; | |
84 | break; | |
85 | ||
86 | case led_amber_off: | |
87 | if (!(led_state & LED_STATE_CLAIMED)) | |
88 | hw_led_state |= LED_D3; | |
89 | break; | |
90 | ||
91 | case led_red_on: | |
92 | if (!(led_state & LED_STATE_CLAIMED)) | |
93 | hw_led_state &= ~LED_D1; | |
94 | break; | |
95 | ||
96 | case led_red_off: | |
97 | if (!(led_state & LED_STATE_CLAIMED)) | |
98 | hw_led_state |= LED_D1; | |
99 | break; | |
100 | ||
101 | default: | |
102 | break; | |
103 | } | |
104 | ||
105 | if (led_state & LED_STATE_ENABLED) { | |
106 | GPSR = hw_led_state; | |
107 | GPCR = hw_led_state ^ LED_MASK; | |
108 | } | |
109 | ||
110 | local_irq_restore(flags); | |
111 | } |