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drm/i915: Add distinct stubs for PM hibernation phases 

Currently for handling the extra hibernation phases we just call the
equivalent suspend/resume phases. In the next couple of patches, I wish
to specialise the hibernation phases to reduce the amount of work
required for handling GEM objects.

v2: There are more! Don't forget the freeze phases.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: David Weinehall <david.weinehall@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1463207195-22076-1-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-05-14 07:26:32 +01:00
parent e3d5457c7c
commit 1f19ac2a0b
1 changed files with 39 additions and 6 deletions
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45
drivers/gpu/drm/i915/i915_drv.c
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@ -1115,6 +1115,39 @@ static int i915_pm_resume(struct device *dev)
return i915_drm_resume(drm_dev);
}
/* freeze: before creating the hibernation_image */
static int i915_pm_freeze(struct device *dev)
{
return i915_pm_suspend(dev);
}
static int i915_pm_freeze_late(struct device *dev)
{
return i915_pm_suspend_late(dev);
}
/* thaw: called after creating the hibernation image, but before turning off. */
static int i915_pm_thaw_early(struct device *dev)
{
return i915_pm_resume_early(dev);
}
static int i915_pm_thaw(struct device *dev)
{
return i915_pm_resume(dev);
}
/* restore: called after loading the hibernation image. */
static int i915_pm_restore_early(struct device *dev)
{
return i915_pm_resume_early(dev);
}
static int i915_pm_restore(struct device *dev)
{
return i915_pm_resume(dev);
}
/*
* Save all Gunit registers that may be lost after a D3 and a subsequent
* S0i[R123] transition. The list of registers needing a save/restore is
@ -1669,14 +1702,14 @@ static const struct dev_pm_ops i915_pm_ops = {
* @restore, @restore_early : called after rebooting and restoring the
* hibernation image [PMSG_RESTORE]
*/
.freeze = i915_pm_suspend,
.freeze_late = i915_pm_suspend_late,
.thaw_early = i915_pm_resume_early,
.thaw = i915_pm_resume,
.freeze = i915_pm_freeze,
.freeze_late = i915_pm_freeze_late,
.thaw_early = i915_pm_thaw_early,
.thaw = i915_pm_thaw,
.poweroff = i915_pm_suspend,
.poweroff_late = i915_pm_poweroff_late,
.restore_early = i915_pm_resume_early,
.restore = i915_pm_resume,
.restore_early = i915_pm_restore_early,
.restore = i915_pm_restore,
/* S0ix (via runtime suspend) event handlers */
.runtime_suspend = intel_runtime_suspend,