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kernel/linux-imx6_3.14.28/include/linux/apm_bios.h 2.68 KB
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  /*
   * Include file for the interface to an APM BIOS
   * Copyright 1994-2001 Stephen Rothwell (sfr@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.
   */
  #ifndef _LINUX_APM_H
  #define _LINUX_APM_H
  
  #include <uapi/linux/apm_bios.h>
  
  
  #define APM_CS		(GDT_ENTRY_APMBIOS_BASE * 8)
  #define APM_CS_16	(APM_CS + 8)
  #define APM_DS		(APM_CS_16 + 8)
  
  /* 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
  
  /*
   * Data for APM that is persistent across module unload/load
   */
  struct apm_info {
  	struct apm_bios_info	bios;
  	unsigned short		connection_version;
  	int			get_power_status_broken;
  	int			get_power_status_swabinminutes;
  	int			allow_ints;
  	int			forbid_idle;
  	int			realmode_power_off;
  	int			disabled;
  };
  
  /*
   * The APM function codes
   */
  #define	APM_FUNC_INST_CHECK	0x5300
  #define	APM_FUNC_REAL_CONN	0x5301
  #define	APM_FUNC_16BIT_CONN	0x5302
  #define	APM_FUNC_32BIT_CONN	0x5303
  #define	APM_FUNC_DISCONN	0x5304
  #define	APM_FUNC_IDLE		0x5305
  #define	APM_FUNC_BUSY		0x5306
  #define	APM_FUNC_SET_STATE	0x5307
  #define	APM_FUNC_ENABLE_PM	0x5308
  #define	APM_FUNC_RESTORE_BIOS	0x5309
  #define	APM_FUNC_GET_STATUS	0x530a
  #define	APM_FUNC_GET_EVENT	0x530b
  #define	APM_FUNC_GET_STATE	0x530c
  #define	APM_FUNC_ENABLE_DEV_PM	0x530d
  #define	APM_FUNC_VERSION	0x530e
  #define	APM_FUNC_ENGAGE_PM	0x530f
  #define	APM_FUNC_GET_CAP	0x5310
  #define	APM_FUNC_RESUME_TIMER	0x5311
  #define	APM_FUNC_RESUME_ON_RING	0x5312
  #define	APM_FUNC_TIMER		0x5313
  
  /*
   * Function code for APM_FUNC_RESUME_TIMER
   */
  #define	APM_FUNC_DISABLE_TIMER	0
  #define	APM_FUNC_GET_TIMER	1
  #define	APM_FUNC_SET_TIMER	2
  
  /*
   * Function code for APM_FUNC_RESUME_ON_RING
   */
  #define	APM_FUNC_DISABLE_RING	0
  #define	APM_FUNC_ENABLE_RING	1
  #define	APM_FUNC_GET_RING	2
  
  /*
   * Function code for APM_FUNC_TIMER_STATUS
   */
  #define	APM_FUNC_TIMER_DISABLE	0
  #define	APM_FUNC_TIMER_ENABLE	1
  #define	APM_FUNC_TIMER_GET	2
  
  /*
   * in arch/i386/kernel/setup.c
   */
  extern struct apm_info	apm_info;
  
  /*
   * This is the "All Devices" ID communicated to the BIOS
   */
  #define APM_DEVICE_BALL		((apm_info.connection_version > 0x0100) ? \
  				 APM_DEVICE_ALL : APM_DEVICE_OLD_ALL)
  #endif	/* LINUX_APM_H */