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- #ifndef _LINUX_APM_H
- #define _LINUX_APM_H
-
- /*
- * Include file for the interface to an APM BIOS
- * Copyright 1994-1998 Stephen Rothwell (Stephen.Rothwell@canb.auug.org.au)
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-
- typedef unsigned short apm_event_t;
- typedef unsigned short apm_eventinfo_t;
-
- #ifdef __KERNEL__
-
- #define APM_40 0x40
- #define APM_CS (APM_40 + 8)
- #define APM_CS_16 (APM_CS + 8)
- #define APM_DS (APM_CS_16 + 8)
-
- struct apm_bios_info {
- unsigned short version;
- unsigned short cseg;
- unsigned long offset;
- unsigned short cseg_16;
- unsigned short dseg;
- unsigned short flags;
- unsigned short cseg_len;
- unsigned short cseg_16_len;
- unsigned short dseg_len;
- };
-
- /* Results of APM Installation Check */
- #define APM_16_BIT_SUPPORT 0x0001
- #define APM_32_BIT_SUPPORT 0x0002
- #define APM_IDLE_SLOWS_CLOCK 0x0004
- #define APM_BIOS_DISABLED 0x0008
- #define APM_BIOS_DISENGAGED 0x0010
-
- /*
- * Maximum number of events stored
- */
- #define APM_MAX_EVENTS 20
-
- /*
- * The per-file APM data
- */
- struct apm_bios_struct {
- int magic;
- struct apm_bios_struct * next;
- int suser;
- int suspends_pending;
- int standbys_pending;
- int suspends_read;
- int standbys_read;
- int event_head;
- int event_tail;
- apm_event_t events[APM_MAX_EVENTS];
- };
-
- /*
- * The magic number in apm_bios_struct
- */
- #define APM_BIOS_MAGIC 0x4101
-
- /*
- * in init/main.c
- */
- extern struct apm_bios_info apm_bios_info;
-
- extern void apm_bios_init(void);
- extern void apm_setup(char *, int *);
-
- extern int apm_register_callback(int (*callback)(apm_event_t));
- extern void apm_unregister_callback(int (*callback)(apm_event_t));
-
- extern void apm_power_off(void);
- extern int apm_display_blank(void);
- extern int apm_display_unblank(void);
-
- #endif /* __KERNEL__ */
-
- /*
- * Power states
- */
- #define APM_STATE_READY 0x0000
- #define APM_STATE_STANDBY 0x0001
- #define APM_STATE_SUSPEND 0x0002
- #define APM_STATE_OFF 0x0003
- #define APM_STATE_BUSY 0x0004
- #define APM_STATE_REJECT 0x0005
-
- /*
- * Events (results of Get PM Event)
- */
- #define APM_SYS_STANDBY 0x0001
- #define APM_SYS_SUSPEND 0x0002
- #define APM_NORMAL_RESUME 0x0003
- #define APM_CRITICAL_RESUME 0x0004
- #define APM_LOW_BATTERY 0x0005
- #define APM_POWER_STATUS_CHANGE 0x0006
- #define APM_UPDATE_TIME 0x0007
- #define APM_CRITICAL_SUSPEND 0x0008
- #define APM_USER_STANDBY 0x0009
- #define APM_USER_SUSPEND 0x000a
- #define APM_STANDBY_RESUME 0x000b
- #define APM_CAPABILITY_CHANGE 0x000c
-
- /*
- * Error codes
- */
- #define APM_SUCCESS 0x00
- #define APM_DISABLED 0x01
- #define APM_CONNECTED 0x02
- #define APM_NOT_CONNECTED 0x03
- #define APM_16_CONNECTED 0x05
- #define APM_16_UNSUPPORTED 0x06
- #define APM_32_CONNECTED 0x07
- #define APM_32_UNSUPPORTED 0x08
- #define APM_BAD_DEVICE 0x09
- #define APM_BAD_PARAM 0x0a
- #define APM_NOT_ENGAGED 0x0b
- #define APM_BAD_FUNCTION 0x0c
- #define APM_RESUME_DISABLED 0x0d
- #define APM_BAD_STATE 0x60
- #define APM_NO_EVENTS 0x80
- #define APM_NOT_PRESENT 0x86
-
- /* ioctl operations */
- #include <linux/ioctl.h>
-
- #define APM_IOC_STANDBY _IO('A', 1)
- #define APM_IOC_SUSPEND _IO('A', 2)
-
- #endif /* LINUX_APM_H */
-