Linux-2.6.12-rc2
[linux-2.6.git] / arch / arm / mach-omap / leds-innovator.c
1 /*
2  * linux/arch/arm/mach-omap/leds-innovator.c
3  */
4 #include <linux/config.h>
5 #include <linux/init.h>
6
7 #include <asm/hardware.h>
8 #include <asm/leds.h>
9 #include <asm/system.h>
10
11 #include "leds.h"
12
13
14 #define LED_STATE_ENABLED       1
15 #define LED_STATE_CLAIMED       2
16
17 static unsigned int led_state;
18 static unsigned int hw_led_state;
19
20 void innovator_leds_event(led_event_t evt)
21 {
22         unsigned long flags;
23
24         local_irq_save(flags);
25
26         switch (evt) {
27         case led_start:
28                 hw_led_state = 0;
29                 led_state = LED_STATE_ENABLED;
30                 break;
31
32         case led_stop:
33                 led_state &= ~LED_STATE_ENABLED;
34                 hw_led_state = 0;
35                 break;
36
37         case led_claim:
38                 led_state |= LED_STATE_CLAIMED;
39                 hw_led_state = 0;
40                 break;
41
42         case led_release:
43                 led_state &= ~LED_STATE_CLAIMED;
44                 hw_led_state = 0;
45                 break;
46
47 #ifdef CONFIG_LEDS_TIMER
48         case led_timer:
49                 if (!(led_state & LED_STATE_CLAIMED))
50                         hw_led_state ^= 0;
51                 break;
52 #endif
53
54 #ifdef CONFIG_LEDS_CPU
55         case led_idle_start:
56                 if (!(led_state & LED_STATE_CLAIMED))
57                         hw_led_state |= 0;
58                 break;
59
60         case led_idle_end:
61                 if (!(led_state & LED_STATE_CLAIMED))
62                         hw_led_state &= ~0;
63                 break;
64 #endif
65
66         case led_halted:
67                 break;
68
69         case led_green_on:
70                 if (led_state & LED_STATE_CLAIMED)
71                         hw_led_state &= ~0;
72                 break;
73
74         case led_green_off:
75                 if (led_state & LED_STATE_CLAIMED)
76                         hw_led_state |= 0;
77                 break;
78
79         case led_amber_on:
80                 break;
81
82         case led_amber_off:
83                 break;
84
85         case led_red_on:
86                 if (led_state & LED_STATE_CLAIMED)
87                         hw_led_state &= ~0;
88                 break;
89
90         case led_red_off:
91                 if (led_state & LED_STATE_CLAIMED)
92                         hw_led_state |= 0;
93                 break;
94
95         default:
96                 break;
97         }
98
99         if (led_state & LED_STATE_ENABLED)
100                 ;
101
102         local_irq_restore(flags);
103 }