blob: d50f4eeaa12ee5045282eca6d2b96cc18b59fa42 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/arch/arm/mach-sa1100/leds-simpad.c
3 *
4 * Author: Juergen Messerer <juergen.messerer@siemens.ch>
5 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07006#include <linux/init.h>
7
Russell Kinga09e64f2008-08-05 16:14:15 +01008#include <mach/hardware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <asm/leds.h>
10#include <asm/system.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010011#include <mach/simpad.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070012
13#include "leds.h"
14
15
16#define LED_STATE_ENABLED 1
17#define LED_STATE_CLAIMED 2
18
19static unsigned int led_state;
20static unsigned int hw_led_state;
21
22#define LED_GREEN (1)
23#define LED_MASK (1)
24
25extern void set_cs3_bit(int value);
26extern void clear_cs3_bit(int value);
27
28void simpad_leds_event(led_event_t evt)
29{
30 switch (evt)
31 {
32 case led_start:
33 hw_led_state = LED_GREEN;
34 led_state = LED_STATE_ENABLED;
35 break;
36
37 case led_stop:
38 led_state &= ~LED_STATE_ENABLED;
39 break;
40
41 case led_claim:
42 led_state |= LED_STATE_CLAIMED;
43 hw_led_state = LED_GREEN;
44 break;
45
46 case led_release:
47 led_state &= ~LED_STATE_CLAIMED;
48 hw_led_state = LED_GREEN;
49 break;
50
51#ifdef CONFIG_LEDS_TIMER
52 case led_timer:
53 if (!(led_state & LED_STATE_CLAIMED))
54 hw_led_state ^= LED_GREEN;
55 break;
56#endif
57
58#ifdef CONFIG_LEDS_CPU
59 case led_idle_start:
60 break;
61
62 case led_idle_end:
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 |= LED_GREEN;
72 break;
73
74 case led_green_off:
75 if (led_state & LED_STATE_CLAIMED)
76 hw_led_state &= ~LED_GREEN;
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 break;
87
88 case led_red_off:
89 break;
90
91 default:
92 break;
93 }
94
95 if (led_state & LED_STATE_ENABLED)
96 set_cs3_bit(LED2_ON);
97 else
98 clear_cs3_bit(LED2_ON);
99}
100