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/*
* pm.h - Power management interface
*
* Copyright (C) 2000 Andrew Henroid
*
* 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 of the License, 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _LINUX_PM_H
#define _LINUX_PM_H
#ifdef __KERNEL__
#include <linux/config.h>
#include <linux/list.h>
/*
* Power management requests
*/
enum
{
PM_SUSPEND, /* enter D1-D3 */
PM_RESUME, /* enter D0 */
PM_SAVE_STATE, /* save device's state */
/* enable wake-on */
PM_SET_WAKEUP,
/* bus resource management */
PM_GET_RESOURCES,
PM_SET_RESOURCES,
/* base station management */
PM_EJECT,
PM_LOCK,
};
typedef int pm_request_t;
/*
* Device types
*/
enum
{
PM_UNKNOWN_DEV = 0, /* generic */
PM_SYS_DEV, /* system device (fan, KB controller, ...) */
PM_PCI_DEV, /* PCI device */
PM_USB_DEV, /* USB device */
PM_SCSI_DEV, /* SCSI device */
PM_ISA_DEV, /* ISA device */
PM_MTD_DEV, /* Memory Technology Device */
};
typedef int pm_dev_t;
/*
* System device hardware ID (PnP) values
*/
enum
{
PM_SYS_UNKNOWN = 0x00000000, /* generic */
PM_SYS_KBC = 0x41d00303, /* keyboard controller */
PM_SYS_COM = 0x41d00500, /* serial port */
PM_SYS_IRDA = 0x41d00510, /* IRDA controller */
PM_SYS_FDC = 0x41d00700, /* floppy controller */
PM_SYS_VGA = 0x41d00900, /* VGA controller */
PM_SYS_PCMCIA = 0x41d00e00, /* PCMCIA controller */
};
/*
* Device identifier
*/
#define PM_PCI_ID(dev) ((dev)->bus->number << 16 | (dev)->devfn)
/*
* Request handler callback
*/
struct pm_dev;
typedef int (*pm_callback)(struct pm_dev *dev, pm_request_t rqst, void *data);
/*
* Dynamic device information
*/
struct pm_dev
{
pm_dev_t type;
unsigned long id;
pm_callback callback;
void *data;
unsigned long flags;
int state;
int prev_state;
struct list_head entry;
};
#ifdef CONFIG_PM
extern int pm_active;
#define PM_IS_ACTIVE() (pm_active != 0)
/*
* Register a device with power management
*/
struct pm_dev *pm_register(pm_dev_t type,
unsigned long id,
pm_callback callback);
/*
* Unregister a device with power management
*/
void pm_unregister(struct pm_dev *dev);
/*
* Unregister all devices with matching callback
*/
void pm_unregister_all(pm_callback callback);
/*
* Send a request to a single device
*/
int pm_send(struct pm_dev *dev, pm_request_t rqst, void *data);
/*
* Send a request to all devices
*/
int pm_send_all(pm_request_t rqst, void *data);
/*
* Find a device
*/
struct pm_dev *pm_find(pm_dev_t type, struct pm_dev *from);
static inline void pm_access(struct pm_dev *dev) {}
static inline void pm_dev_idle(struct pm_dev *dev) {}
#else /* CONFIG_PM */
#define PM_IS_ACTIVE() 0
static inline struct pm_dev *pm_register(pm_dev_t type,
unsigned long id,
pm_callback callback)
{
return 0;
}
static inline void pm_unregister(struct pm_dev *dev) {}
static inline void pm_unregister_all(pm_callback callback) {}
static inline int pm_send(struct pm_dev *dev, pm_request_t rqst, void *data)
{
return 0;
}
static inline int pm_send_all(pm_request_t rqst, void *data)
{
return 0;
}
static inline struct pm_dev *pm_find(pm_dev_t type, struct pm_dev *from)
{
return 0;
}
static inline void pm_access(struct pm_dev *dev) {}
static inline void pm_dev_idle(struct pm_dev *dev) {}
#endif /* CONFIG_PM */
extern void (*pm_idle)(void);
extern void (*pm_power_off)(void);
#endif /* __KERNEL__ */
#endif /* _LINUX_PM_H */
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