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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 */
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#include <asm/arch/simpad.h>
13
14#include "leds.h"
15
16
17#define LED_STATE_ENABLED 1
18#define LED_STATE_CLAIMED 2
19
20static unsigned int led_state;
21static unsigned int hw_led_state;
22
23#define LED_GREEN (1)
24#define LED_MASK (1)
25
26extern void set_cs3_bit(int value);
27extern void clear_cs3_bit(int value);
28
29void simpad_leds_event(led_event_t evt)
30{
31 switch (evt)
32 {
33 case led_start:
34 hw_led_state = LED_GREEN;
35 led_state = LED_STATE_ENABLED;
36 break;
37
38 case led_stop:
39 led_state &= ~LED_STATE_ENABLED;
40 break;
41
42 case led_claim:
43 led_state |= LED_STATE_CLAIMED;
44 hw_led_state = LED_GREEN;
45 break;
46
47 case led_release:
48 led_state &= ~LED_STATE_CLAIMED;
49 hw_led_state = LED_GREEN;
50 break;
51
52#ifdef CONFIG_LEDS_TIMER
53 case led_timer:
54 if (!(led_state & LED_STATE_CLAIMED))
55 hw_led_state ^= LED_GREEN;
56 break;
57#endif
58
59#ifdef CONFIG_LEDS_CPU
60 case led_idle_start:
61 break;
62
63 case led_idle_end:
64 break;
65#endif
66
67 case led_halted:
68 break;
69
70 case led_green_on:
71 if (led_state & LED_STATE_CLAIMED)
72 hw_led_state |= LED_GREEN;
73 break;
74
75 case led_green_off:
76 if (led_state & LED_STATE_CLAIMED)
77 hw_led_state &= ~LED_GREEN;
78 break;
79
80 case led_amber_on:
81 break;
82
83 case led_amber_off:
84 break;
85
86 case led_red_on:
87 break;
88
89 case led_red_off:
90 break;
91
92 default:
93 break;
94 }
95
96 if (led_state & LED_STATE_ENABLED)
97 set_cs3_bit(LED2_ON);
98 else
99 clear_cs3_bit(LED2_ON);
100}
101