On Wednesday, 2 of July 2008, Alan Stern wrote:
> 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@xxxxxxxxxxxxxxxxxxx>
>
> ---
>
> Rafael:
>
> Can we get this into linux-next so that it will enter the main kernel
> during the 2.6.27-rc1 merge window? All it does is add some new
> macros.
>
> I don't have a linux-next tree here, so I can't even compile-test the
> patch. Can you make sure that it doesn't contain any horrendous
> errors? Thanks.
I'm currently testing it. If it compiles, I'll send it to Andrew along with
some other PM patches for inclusion into -mm and hopefully into .27-rc,
eventually.
Thanks,
Rafael
> Index: pci/include/linux/pm.h
> ===================================================================
> --- pci.orig/include/linux/pm.h
> +++ pci/include/linux/pm.h
> @@ -317,6 +317,21 @@ 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
> @@ -328,9 +343,18 @@ 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_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 PM_EVENT_SLEEP (PM_EVENT_SUSPEND | PM_EVENT_HIBERNATE)
> -
> +#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, })
> @@ -339,7 +363,16 @@ 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
>
>
>
--
"Premature optimization is the root of all evil." - Donald Knuth
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