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1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * (C) 2003 zecke@handhelds.org
6 * based on arch/arm/kernel/apm.c
7 * factor out the information needed by architectures to provide
10 #ifndef __LINUX_APM_EMULATION_H
11 #define __LINUX_APM_EMULATION_H
13 #include <linux/apm_bios.h>
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.
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
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
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
45 #define APM_UNITS_MINS 0
46 #define APM_UNITS_SECS 1
47 #define APM_UNITS_UNKNOWN -1
52 * This allows machines to provide their own "apm get power status" function.
54 extern void (*apm_get_power_status
)(struct apm_power_info
*);
57 * Queue an event (APM_SYS_SUSPEND or APM_CRITICAL_SUSPEND)
59 void apm_queue_event(apm_event_t event
);
61 #endif /* __LINUX_APM_EMULATION_H */