Changeset 305 for GPL/branches/uniaud-2.0/include/linux/pm.h

Timestamp:

Mar 24, 2008, 2:43:42 AM (17 years ago)

Author:

Paul Smedley

Message:

Update source to ALSA 1.0.16 level

File:

• GPL/branches/uniaud-2.0/include/linux/pm.h (modified) (1 diff)

GPL/branches/uniaud-2.0/include/linux/pm.h

@@ -1 @@
-/* $Id: pm.h,v 1.1.1.1 2003/07/02 13:57:00 eleph Exp $ */
+/*
+ *  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
 
-
-#endif /* _LINUX_IOCTL_H */
-
+#ifdef __KERNEL__
+
+#include <linux/config.h>
+#include <linux/list.h>
+#include <asm/atomic.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;
+        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 *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 */
+
+
+/*
+ * Callbacks for platform drivers to implement.
+ */
+extern void (*pm_idle)(void);
+extern void (*pm_power_off)(void);
+
+enum {
+        PM_SUSPEND_ON,
+        PM_SUSPEND_STANDBY,
+        PM_SUSPEND_MEM,
+        PM_SUSPEND_DISK,
+        PM_SUSPEND_MAX,
+};
+
+enum {
+        PM_DISK_FIRMWARE = 1,
+        PM_DISK_PLATFORM,
+        PM_DISK_SHUTDOWN,
+        PM_DISK_REBOOT,
+        PM_DISK_MAX,
+};
+
+
+struct pm_ops {
+        u32     pm_disk_mode;
+        int (*prepare)(u32 state);
+        int (*enter)(u32 state);
+        int (*finish)(u32 state);
+};
+
+extern void pm_set_ops(struct pm_ops *);
+
+extern int pm_suspend(u32 state);
+
+
+/*
+ * Device power management
+ */
+
+struct device;
+
+struct dev_pm_info {
+#ifdef  CONFIG_PM
+        u32                     power_state;
+        u8                      * 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(u32 state);
+extern int device_power_down(u32 state);
+extern void device_power_up(void);
+extern void device_resume(void);
+
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_PM_H */