1/* -*- linux-c -*-
2 *
3 * (C) 2003 zecke@handhelds.org
4 *
5 * GPL version 2
6 *
7 * based on arch/arm/kernel/apm.c
8 * factor out the information needed by architectures to provide
9 * apm status
10 */
11#ifndef __LINUX_APM_EMULATION_H
12#define __LINUX_APM_EMULATION_H
13
14#include <linux/apm_bios.h>
15
16/*
17 * This structure gets filled in by the machine specific 'get_power_status'
18 * implementation.  Any fields which are not set default to a safe value.
19 */
20struct apm_power_info {
21	unsigned char	ac_line_status;
22#define APM_AC_OFFLINE			0
23#define APM_AC_ONLINE			1
24#define APM_AC_BACKUP			2
25#define APM_AC_UNKNOWN			0xff
26
27	unsigned char	battery_status;
28#define APM_BATTERY_STATUS_HIGH		0
29#define APM_BATTERY_STATUS_LOW		1
30#define APM_BATTERY_STATUS_CRITICAL	2
31#define APM_BATTERY_STATUS_CHARGING	3
32#define APM_BATTERY_STATUS_NOT_PRESENT	4
33#define APM_BATTERY_STATUS_UNKNOWN	0xff
34
35	unsigned char	battery_flag;
36#define APM_BATTERY_FLAG_HIGH		(1 << 0)
37#define APM_BATTERY_FLAG_LOW		(1 << 1)
38#define APM_BATTERY_FLAG_CRITICAL	(1 << 2)
39#define APM_BATTERY_FLAG_CHARGING	(1 << 3)
40#define APM_BATTERY_FLAG_NOT_PRESENT	(1 << 7)
41#define APM_BATTERY_FLAG_UNKNOWN	0xff
42
43	int		battery_life;
44	int		time;
45	int		units;
46#define APM_UNITS_MINS			0
47#define APM_UNITS_SECS			1
48#define APM_UNITS_UNKNOWN		-1
49
50};
51
52/*
53 * This allows machines to provide their own "apm get power status" function.
54 */
55extern void (*apm_get_power_status)(struct apm_power_info *);
56
57/*
58 * Queue an event (APM_SYS_SUSPEND or APM_CRITICAL_SUSPEND)
59 */
60void apm_queue_event(apm_event_t event);
61
62#endif /* __LINUX_APM_EMULATION_H */
63