1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* -*- linux-c -*-
3 *
4 * (C) 2003 zecke@handhelds.org
5 *
6 * based on arch/arm/kernel/apm.c
7 * factor out the information needed by architectures to provide
8 * apm status
9 */
10 #ifndef __LINUX_APM_EMULATION_H
11 #define __LINUX_APM_EMULATION_H
12
13 #include <linux/apm_bios.h>
14
15 /*
16 * This structure gets filled in by the machine specific 'get_power_status'
17 * implementation. Any fields which are not set default to a safe value.
18 */
19 struct apm_power_info {
20 unsigned char ac_line_status;
21 #define APM_AC_OFFLINE 0
22 #define APM_AC_ONLINE 1
23 #define APM_AC_BACKUP 2
24 #define APM_AC_UNKNOWN 0xff
25
26 unsigned char battery_status;
27 #define APM_BATTERY_STATUS_HIGH 0
28 #define APM_BATTERY_STATUS_LOW 1
29 #define APM_BATTERY_STATUS_CRITICAL 2
30 #define APM_BATTERY_STATUS_CHARGING 3
31 #define APM_BATTERY_STATUS_NOT_PRESENT 4
32 #define APM_BATTERY_STATUS_UNKNOWN 0xff
33
34 unsigned char battery_flag;
35 #define APM_BATTERY_FLAG_HIGH (1 << 0)
36 #define APM_BATTERY_FLAG_LOW (1 << 1)
37 #define APM_BATTERY_FLAG_CRITICAL (1 << 2)
38 #define APM_BATTERY_FLAG_CHARGING (1 << 3)
39 #define APM_BATTERY_FLAG_NOT_PRESENT (1 << 7)
40 #define APM_BATTERY_FLAG_UNKNOWN 0xff
41
42 int battery_life;
43 int time;
44 int units;
45 #define APM_UNITS_MINS 0
46 #define APM_UNITS_SECS 1
47 #define APM_UNITS_UNKNOWN -1
48
49 };
50
51 /*
52 * This allows machines to provide their own "apm get power status" function.
53 */
54 extern void (*apm_get_power_status)(struct apm_power_info *);
55
56 /*
57 * Queue an event (APM_SYS_SUSPEND or APM_CRITICAL_SUSPEND)
58 */
59 void apm_queue_event(apm_event_t event);
60
61 #endif /* __LINUX_APM_EMULATION_H */
62
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