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pm: add new PM_EVENT codes for runtime power transitions 

This patch (as1112) adds some new PM_EVENT_* codes for use by kernel
subsystems.  They describe runtime power-state transitions of the sort already
implemented by the USB subsystem.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Stern 2008-07-23 21:28:37 -07:00 committed by Linus Torvalds
parent 8c363265d5
commit 8111d1b552
1 changed files with 35 additions and 2 deletions
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37
include/linux/pm.h
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@ -245,6 +245,21 @@ struct pm_ext_ops {
* RECOVER Creation of a hibernation image or restoration of the main
* memory contents from a hibernation image has failed, call
* ->thaw() and ->complete() for all devices.
*
* The following PM_EVENT_ messages are defined for internal use by
* kernel subsystems. They are never issued by the PM core.
*
* USER_SUSPEND Manual selective suspend was issued by userspace.
*
* USER_RESUME Manual selective resume was issued by userspace.
*
* REMOTE_WAKEUP Remote-wakeup request was received from the device.
*
* AUTO_SUSPEND Automatic (device idle) runtime suspend was
* initiated by the subsystem.
*
* AUTO_RESUME Automatic (device needed) runtime resume was
* requested by a driver.
*/
#define PM_EVENT_ON 0x0000
@ -256,9 +271,18 @@ struct pm_ext_ops {
#define PM_EVENT_THAW 0x0020
#define PM_EVENT_RESTORE 0x0040
#define PM_EVENT_RECOVER 0x0080
#define PM_EVENT_USER 0x0100
#define PM_EVENT_REMOTE 0x0200
#define PM_EVENT_AUTO 0x0400
#define PM_EVENT_SLEEP (PM_EVENT_SUSPEND | PM_EVENT_HIBERNATE)
#define PM_EVENT_SLEEP (PM_EVENT_SUSPEND | PM_EVENT_HIBERNATE)
#define PM_EVENT_USER_SUSPEND (PM_EVENT_USER | PM_EVENT_SUSPEND)
#define PM_EVENT_USER_RESUME (PM_EVENT_USER | PM_EVENT_RESUME)
#define PM_EVENT_REMOTE_WAKEUP (PM_EVENT_REMOTE | PM_EVENT_RESUME)
#define PM_EVENT_AUTO_SUSPEND (PM_EVENT_AUTO | PM_EVENT_SUSPEND)
#define PM_EVENT_AUTO_RESUME (PM_EVENT_AUTO | PM_EVENT_RESUME)
#define PMSG_ON ((struct pm_message){ .event = PM_EVENT_ON, })
#define PMSG_FREEZE ((struct pm_message){ .event = PM_EVENT_FREEZE, })
#define PMSG_QUIESCE ((struct pm_message){ .event = PM_EVENT_QUIESCE, })
#define PMSG_SUSPEND ((struct pm_message){ .event = PM_EVENT_SUSPEND, })
@ -267,7 +291,16 @@ struct pm_ext_ops {
#define PMSG_THAW ((struct pm_message){ .event = PM_EVENT_THAW, })
#define PMSG_RESTORE ((struct pm_message){ .event = PM_EVENT_RESTORE, })
#define PMSG_RECOVER ((struct pm_message){ .event = PM_EVENT_RECOVER, })
#define PMSG_ON ((struct pm_message){ .event = PM_EVENT_ON, })
#define PMSG_USER_SUSPEND ((struct pm_messge) \
{ .event = PM_EVENT_USER_SUSPEND, })
#define PMSG_USER_RESUME ((struct pm_messge) \
{ .event = PM_EVENT_USER_RESUME, })
#define PMSG_REMOTE_RESUME ((struct pm_messge) \
{ .event = PM_EVENT_REMOTE_RESUME, })
#define PMSG_AUTO_SUSPEND ((struct pm_messge) \
{ .event = PM_EVENT_AUTO_SUSPEND, })
#define PMSG_AUTO_RESUME ((struct pm_messge) \
{ .event = PM_EVENT_AUTO_RESUME, })
/**
* Device power management states