include/linux/apm-emulation.h

   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 */