include/linux/apm-emulation.h

Source file repositories/reference/linux-study-clean/include/linux/apm-emulation.h

File Facts

System
Linux kernel
Corpus path
include/linux/apm-emulation.h
Extension
.h
Size
1599 bytes
Lines
62
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct apm_power_info {
	unsigned char	ac_line_status;
#define APM_AC_OFFLINE			0
#define APM_AC_ONLINE			1
#define APM_AC_BACKUP			2
#define APM_AC_UNKNOWN			0xff

	unsigned char	battery_status;
#define APM_BATTERY_STATUS_HIGH		0
#define APM_BATTERY_STATUS_LOW		1
#define APM_BATTERY_STATUS_CRITICAL	2
#define APM_BATTERY_STATUS_CHARGING	3
#define APM_BATTERY_STATUS_NOT_PRESENT	4
#define APM_BATTERY_STATUS_UNKNOWN	0xff

	unsigned char	battery_flag;
#define APM_BATTERY_FLAG_HIGH		(1 << 0)
#define APM_BATTERY_FLAG_LOW		(1 << 1)
#define APM_BATTERY_FLAG_CRITICAL	(1 << 2)
#define APM_BATTERY_FLAG_CHARGING	(1 << 3)
#define APM_BATTERY_FLAG_NOT_PRESENT	(1 << 7)
#define APM_BATTERY_FLAG_UNKNOWN	0xff

	int		battery_life;
	int		time;
	int		units;
#define APM_UNITS_MINS			0
#define APM_UNITS_SECS			1
#define APM_UNITS_UNKNOWN		-1

};

/*
 * This allows machines to provide their own "apm get power status" function.
 */
extern void (*apm_get_power_status)(struct apm_power_info *);

/*
 * Queue an event (APM_SYS_SUSPEND or APM_CRITICAL_SUSPEND)
 */
void apm_queue_event(apm_event_t event);

#endif /* __LINUX_APM_EMULATION_H */

Annotation

Implementation Notes