2 * pm.h - Power management interface
4 * Copyright (C) 2000 Andrew Henroid
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include <linux/config.h>
27 #include <linux/list.h>
30 * Power management requests
34 PM_SUSPEND, /* enter D1-D3 */
35 PM_RESUME, /* enter D0 */
37 PM_SAVE_STATE, /* save device's state */
42 /* bus resource management */
46 /* base station management */
51 typedef int pm_request_t;
58 PM_UNKNOWN_DEV = 0, /* generic */
59 PM_SYS_DEV, /* system device (fan, KB controller, ...) */
60 PM_PCI_DEV, /* PCI device */
61 PM_USB_DEV, /* USB device */
62 PM_SCSI_DEV, /* SCSI device */
63 PM_ISA_DEV, /* ISA device */
64 PM_MTD_DEV, /* Memory Technology Device */
70 * System device hardware ID (PnP) values
74 PM_SYS_UNKNOWN = 0x00000000, /* generic */
75 PM_SYS_KBC = 0x41d00303, /* keyboard controller */
76 PM_SYS_COM = 0x41d00500, /* serial port */
77 PM_SYS_IRDA = 0x41d00510, /* IRDA controller */
78 PM_SYS_FDC = 0x41d00700, /* floppy controller */
79 PM_SYS_VGA = 0x41d00900, /* VGA controller */
80 PM_SYS_PCMCIA = 0x41d00e00, /* PCMCIA controller */
86 #define PM_PCI_ID(dev) ((dev)->bus->number << 16 | (dev)->devfn)
89 * Request handler callback
93 typedef int (*pm_callback)(struct pm_dev *dev, pm_request_t rqst, void *data);
96 * Dynamic device information
102 pm_callback callback;
107 unsigned long prev_state;
109 struct list_head entry;
114 extern int pm_active;
116 #define PM_IS_ACTIVE() (pm_active != 0)
119 * Register a device with power management
121 struct pm_dev *pm_register(pm_dev_t type,
123 pm_callback callback);
126 * Unregister a device with power management
128 void pm_unregister(struct pm_dev *dev);
131 * Unregister all devices with matching callback
133 void pm_unregister_all(pm_callback callback);
136 * Send a request to a single device
138 int pm_send(struct pm_dev *dev, pm_request_t rqst, void *data);
141 * Send a request to all devices
143 int pm_send_all(pm_request_t rqst, void *data);
148 struct pm_dev *pm_find(pm_dev_t type, struct pm_dev *from);
150 static inline void pm_access(struct pm_dev *dev) {}
151 static inline void pm_dev_idle(struct pm_dev *dev) {}
153 #else /* CONFIG_PM */
155 #define PM_IS_ACTIVE() 0
157 static inline struct pm_dev *pm_register(pm_dev_t type,
159 pm_callback callback)
164 static inline void pm_unregister(struct pm_dev *dev) {}
166 static inline void pm_unregister_all(pm_callback callback) {}
168 static inline int pm_send(struct pm_dev *dev, pm_request_t rqst, void *data)
173 static inline int pm_send_all(pm_request_t rqst, void *data)
178 static inline struct pm_dev *pm_find(pm_dev_t type, struct pm_dev *from)
183 static inline void pm_access(struct pm_dev *dev) {}
184 static inline void pm_dev_idle(struct pm_dev *dev) {}
186 #endif /* CONFIG_PM */
188 extern void (*pm_idle)(void);
189 extern void (*pm_power_off)(void);
191 #endif /* __KERNEL__ */
193 #endif /* _LINUX_PM_H */