diff options
Diffstat (limited to 'include/linux/pm.h')
| -rw-r--r-- | include/linux/pm.h | 43 |
1 files changed, 35 insertions, 8 deletions
diff --git a/include/linux/pm.h b/include/linux/pm.h index e4982ac3fbbc..c68e1f22ac95 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -110,6 +110,10 @@ typedef struct pm_message { * Subsystem-level @suspend() is executed for all devices after invoking * subsystem-level @prepare() for all of them. * + * @suspend_late: Continue operations started by @suspend(). For a number of + * devices @suspend_late() may point to the same callback routine as the + * runtime suspend callback. + * * @resume: Executed after waking the system up from a sleep state in which the * contents of main memory were preserved. The exact action to perform * depends on the device's subsystem, but generally the driver is expected @@ -122,6 +126,10 @@ typedef struct pm_message { * Subsystem-level @resume() is executed for all devices after invoking * subsystem-level @resume_noirq() for all of them. * + * @resume_early: Prepare to execute @resume(). For a number of devices + * @resume_early() may point to the same callback routine as the runtime + * resume callback. + * * @freeze: Hibernation-specific, executed before creating a hibernation image. * Analogous to @suspend(), but it should not enable the device to signal * wakeup events or change its power state. The majority of subsystems @@ -131,6 +139,10 @@ typedef struct pm_message { * Subsystem-level @freeze() is executed for all devices after invoking * subsystem-level @prepare() for all of them. * + * @freeze_late: Continue operations started by @freeze(). Analogous to + * @suspend_late(), but it should not enable the device to signal wakeup + * events or change its power state. + * * @thaw: Hibernation-specific, executed after creating a hibernation image OR * if the creation of an image has failed. Also executed after a failing * attempt to restore the contents of main memory from such an image. @@ -140,15 +152,23 @@ typedef struct pm_message { * subsystem-level @thaw_noirq() for all of them. It also may be executed * directly after @freeze() in case of a transition error. * + * @thaw_early: Prepare to execute @thaw(). Undo the changes made by the + * preceding @freeze_late(). + * * @poweroff: Hibernation-specific, executed after saving a hibernation image. * Analogous to @suspend(), but it need not save the device's settings in * memory. * Subsystem-level @poweroff() is executed for all devices after invoking * subsystem-level @prepare() for all of them. * + * @poweroff_late: Continue operations started by @poweroff(). Analogous to + * @suspend_late(), but it need not save the device's settings in memory. + * * @restore: Hibernation-specific, executed after restoring the contents of main * memory from a hibernation image, analogous to @resume(). * + * @restore_early: Prepare to execute @restore(), analogous to @resume_early(). + * * @suspend_noirq: Complete the actions started by @suspend(). Carry out any * additional operations required for suspending the device that might be * racing with its driver's interrupt handler, which is guaranteed not to @@ -158,9 +178,10 @@ typedef struct pm_message { * @suspend_noirq() has returned successfully. If the device can generate * system wakeup signals and is enabled to wake up the system, it should be * configured to do so at that time. However, depending on the platform - * and device's subsystem, @suspend() may be allowed to put the device into - * the low-power state and configure it to generate wakeup signals, in - * which case it generally is not necessary to define @suspend_noirq(). + * and device's subsystem, @suspend() or @suspend_late() may be allowed to + * put the device into the low-power state and configure it to generate + * wakeup signals, in which case it generally is not necessary to define + * @suspend_noirq(). * * @resume_noirq: Prepare for the execution of @resume() by carrying out any * operations required for resuming the device that might be racing with @@ -171,9 +192,9 @@ typedef struct pm_message { * additional operations required for freezing the device that might be * racing with its driver's interrupt handler, which is guaranteed not to * run while @freeze_noirq() is being executed. - * The power state of the device should not be changed by either @freeze() - * or @freeze_noirq() and it should not be configured to signal system - * wakeup by any of these callbacks. + * The power state of the device should not be changed by either @freeze(), + * or @freeze_late(), or @freeze_noirq() and it should not be configured to + * signal system wakeup by any of these callbacks. * * @thaw_noirq: Prepare for the execution of @thaw() by carrying out any * operations required for thawing the device that might be racing with its @@ -249,6 +270,12 @@ struct dev_pm_ops { int (*thaw)(struct device *dev); int (*poweroff)(struct device *dev); int (*restore)(struct device *dev); + int (*suspend_late)(struct device *dev); + int (*resume_early)(struct device *dev); + int (*freeze_late)(struct device *dev); + int (*thaw_early)(struct device *dev); + int (*poweroff_late)(struct device *dev); + int (*restore_early)(struct device *dev); int (*suspend_noirq)(struct device *dev); int (*resume_noirq)(struct device *dev); int (*freeze_noirq)(struct device *dev); @@ -584,13 +611,13 @@ struct dev_pm_domain { #ifdef CONFIG_PM_SLEEP extern void device_pm_lock(void); -extern void dpm_resume_noirq(pm_message_t state); +extern void dpm_resume_start(pm_message_t state); extern void dpm_resume_end(pm_message_t state); extern void dpm_resume(pm_message_t state); extern void dpm_complete(pm_message_t state); extern void device_pm_unlock(void); -extern int dpm_suspend_noirq(pm_message_t state); +extern int dpm_suspend_end(pm_message_t state); extern int dpm_suspend_start(pm_message_t state); extern int dpm_suspend(pm_message_t state); extern int dpm_prepare(pm_message_t state); |