1 files changed, 233 insertions, 0 deletions

diff --git a/include/linux/pm.h b/include/linux/pm.h
new file mode 100644
index 000000000000..ed2b76e75199
--- /dev/null
+++ b/include/linux/pm.h
@@ -0,0 +1,233 @@
+/*
+ *  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>
+#include <asm/atomic.h>
+
+/*
+ * Power management requests... these are passed to pm_send_all() and friends.
+ *
+ * these functions are old and deprecated, see below.
+ */
+typedef int __bitwise pm_request_t;
+
+#define PM_SUSPEND      ((__force pm_request_t) 1)      /* enter D1-D3 */
+#define PM_RESUME       ((__force pm_request_t) 2)      /* enter D0 */
+
+
+/*
+ * Device types... these are passed to pm_register
+ */
+typedef int __bitwise pm_dev_t;
+
+#define PM_UNKNOWN_DEV  ((__force pm_dev_t) 0)  /* generic */
+#define PM_SYS_DEV      ((__force pm_dev_t) 1)  /* system device (fan, KB controller, ...) */
+#define PM_PCI_DEV      ((__force pm_dev_t) 2)  /* PCI device */
+#define PM_USB_DEV      ((__force pm_dev_t) 3)  /* USB device */
+#define PM_SCSI_DEV     ((__force pm_dev_t) 4)  /* SCSI device */
+#define PM_ISA_DEV      ((__force pm_dev_t) 5)  /* ISA device */
+#define PM_MTD_DEV      ((__force pm_dev_t) 6)  /* Memory Technology Device */
+
+/*
+ * 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;
+        unsigned long    state;
+        unsigned long    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 __deprecated *pm_register(pm_dev_t type, unsigned long id, pm_callback callback);
+
+/*
+ * Unregister a device with power management
+ */
+void __deprecated pm_unregister(struct pm_dev *dev);
+
+/*
+ * Unregister all devices with matching callback
+ */
+void __deprecated pm_unregister_all(pm_callback callback);
+
+/*
+ * Send a request to all devices
+ */
+int __deprecated pm_send_all(pm_request_t rqst, void *data);
+
+#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 NULL;
+}
+
+static inline void pm_unregister(struct pm_dev *dev) {}
+
+static inline void pm_unregister_all(pm_callback callback) {}
+
+static inline int pm_send_all(pm_request_t rqst, void *data)
+{
+        return 0;
+}
+
+#endif /* CONFIG_PM */
+
+/* Functions above this comment are list-based old-style power
+ * managment. Please avoid using them.  */
+
+/*
+ * Callbacks for platform drivers to implement.
+ */
+extern void (*pm_idle)(void);
+extern void (*pm_power_off)(void);
+
+typedef int __bitwise suspend_state_t;
+
+#define PM_SUSPEND_ON           ((__force suspend_state_t) 0)
+#define PM_SUSPEND_STANDBY      ((__force suspend_state_t) 1)
+#define PM_SUSPEND_MEM          ((__force suspend_state_t) 3)
+#define PM_SUSPEND_DISK         ((__force suspend_state_t) 4)
+#define PM_SUSPEND_MAX          ((__force suspend_state_t) 5)
+
+typedef int __bitwise suspend_disk_method_t;
+
+#define PM_DISK_FIRMWARE        ((__force suspend_disk_method_t) 1)
+#define PM_DISK_PLATFORM        ((__force suspend_disk_method_t) 2)
+#define PM_DISK_SHUTDOWN        ((__force suspend_disk_method_t) 3)
+#define PM_DISK_REBOOT          ((__force suspend_disk_method_t) 4)
+#define PM_DISK_MAX             ((__force suspend_disk_method_t) 5)
+
+struct pm_ops {
+        suspend_disk_method_t pm_disk_mode;
+        int (*prepare)(suspend_state_t state);
+        int (*enter)(suspend_state_t state);
+        int (*finish)(suspend_state_t state);
+};
+
+extern void pm_set_ops(struct pm_ops *);
+
+extern int pm_suspend(suspend_state_t state);
+
+
+/*
+ * Device power management
+ */
+
+struct device;
+
+typedef u32 __bitwise pm_message_t;
+
+/*
+ * There are 4 important states driver can be in:
+ * ON     -- driver is working
+ * FREEZE -- stop operations and apply whatever policy is applicable to a suspended driver
+ *           of that class, freeze queues for block like IDE does, drop packets for
+ *           ethernet, etc... stop DMA engine too etc... so a consistent image can be
+ *           saved; but do not power any hardware down.
+ * SUSPEND - like FREEZE, but hardware is doing as much powersaving as possible. Roughly
+ *           pci D3.
+ *
+ * Unfortunately, current drivers only recognize numeric values 0 (ON) and 3 (SUSPEND).
+ * We'll need to fix the drivers. So yes, putting 3 to all diferent defines is intentional,
+ * and will go away as soon as drivers are fixed. Also note that typedef is neccessary,
+ * we'll probably want to switch to
+ *   typedef struct pm_message_t { int event; int flags; } pm_message_t
+ * or something similar soon.
+ */
+
+#define PMSG_FREEZE     ((__force pm_message_t) 3)
+#define PMSG_SUSPEND    ((__force pm_message_t) 3)
+#define PMSG_ON         ((__force pm_message_t) 0)
+
+struct dev_pm_info {
+        pm_message_t            power_state;
+#ifdef  CONFIG_PM
+        pm_message_t            prev_state;
+        void                    * saved_state;
+        atomic_t                pm_users;
+        struct device           * pm_parent;
+        struct list_head        entry;
+#endif
+};
+
+extern void device_pm_set_parent(struct device * dev, struct device * parent);
+
+extern int device_suspend(pm_message_t state);
+extern int device_power_down(pm_message_t state);
+extern void device_power_up(void);
+extern void device_resume(void);
+
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_PM_H */