blob: afbc6698e27cfce4107bee4f097f2db98cf79065 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/*
* linux/arch/arm/mach-pxa/leds-lubbock.c
*
* Copyright (C) 2000 John Dorsey <john+@cs.cmu.edu>
*
* Copyright (c) 2001 Jeff Sutherland <jeffs@accelent.com>
*
* Original (leds-footbridge.c) by Russell King
*
* Major surgery on April 2004 by Nicolas Pitre for less global
* namespace collision. Mostly adapted the Mainstone version.
*/
#include <linux/init.h>
#include <asm/hardware.h>
#include <asm/leds.h>
#include <asm/system.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/lubbock.h>
#include "leds.h"
/*
* 8 discrete leds available for general use:
*
* Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
* so be sure to not monkey with them here.
*/
#define D28 (1 << 0)
#define D27 (1 << 1)
#define D26 (1 << 2)
#define D25 (1 << 3)
#define D24 (1 << 4)
#define D23 (1 << 5)
#define D22 (1 << 6)
#define D21 (1 << 7)
#define LED_STATE_ENABLED 1
#define LED_STATE_CLAIMED 2
static unsigned int led_state;
static unsigned int hw_led_state;
void lubbock_leds_event(led_event_t evt)
{
unsigned long flags;
local_irq_save(flags);
switch (evt) {
case led_start:
hw_led_state = 0;
led_state = LED_STATE_ENABLED;
break;
case led_stop:
led_state &= ~LED_STATE_ENABLED;
break;
case led_claim:
led_state |= LED_STATE_CLAIMED;
hw_led_state = 0;
break;
case led_release:
led_state &= ~LED_STATE_CLAIMED;
hw_led_state = 0;
break;
#ifdef CONFIG_LEDS_TIMER
case led_timer:
hw_led_state ^= D26;
break;
#endif
#ifdef CONFIG_LEDS_CPU
case led_idle_start:
hw_led_state &= ~D27;
break;
case led_idle_end:
hw_led_state |= D27;
break;
#endif
case led_halted:
break;
case led_green_on:
hw_led_state |= D21;
break;
case led_green_off:
hw_led_state &= ~D21;
break;
case led_amber_on:
hw_led_state |= D22;
break;
case led_amber_off:
hw_led_state &= ~D22;
break;
case led_red_on:
hw_led_state |= D23;
break;
case led_red_off:
hw_led_state &= ~D23;
break;
default:
break;
}
if (led_state & LED_STATE_ENABLED)
LUB_DISC_BLNK_LED = (LUB_DISC_BLNK_LED | 0xff) & ~hw_led_state;
else
LUB_DISC_BLNK_LED |= 0xff;
local_irq_restore(flags);
}
|
