blob: 71eb4ccc4bc15e2a369b26d129526dd1a39e290d (
plain) (
blame)
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
|
/*
* Cobalt Reset operations
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1995, 1996, 1997 by Ralf Baechle
* Copyright (C) 2001 by Liam Davies (ldavies@agile.tv)
*/
#include <linux/init.h>
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/leds.h>
#include <cobalt.h>
#define RESET_PORT ((void __iomem *)CKSEG1ADDR(0x1c000000))
#define RESET 0x0f
DEFINE_LED_TRIGGER(power_off_led_trigger);
static int __init ledtrig_power_off_init(void)
{
led_trigger_register_simple("power-off", &power_off_led_trigger);
return 0;
}
device_initcall(ledtrig_power_off_init);
void cobalt_machine_halt(void)
{
int state, last, diff;
unsigned long mark;
/*
* turn on power off LED on RaQ
*
* restart if ENTER and SELECT are pressed
*/
last = COBALT_KEY_PORT;
led_trigger_event(power_off_led_trigger, LED_FULL);
for (state = 0;;) {
diff = COBALT_KEY_PORT ^ last;
last ^= diff;
if((diff & (COBALT_KEY_ENTER | COBALT_KEY_SELECT)) && !(~last & (COBALT_KEY_ENTER | COBALT_KEY_SELECT)))
writeb(RESET, RESET_PORT);
for (mark = jiffies; jiffies - mark < HZ;)
;
}
}
void cobalt_machine_restart(char *command)
{
writeb(RESET, RESET_PORT);
/* we should never get here */
cobalt_machine_halt();
}
|
