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drm/i915: implement new pm ops for i915
One problem in i915 hibernate with current legacy pci pm ops is that after we do freeze, we'll be forced to do resume once again, which re-init some resources and do modesetting again, that is unnecessary for hibernate. This patch trys to bypass that. We can't resolve this within legacy pm framework, but can do it easily with new pm ops. Suspend (S3) process has also been kept without change. Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
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@ -284,6 +284,52 @@ i915_pci_resume(struct pci_dev *pdev)
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return i915_resume(dev);
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}
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static int
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i915_pm_suspend(struct device *dev)
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{
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return i915_pci_suspend(to_pci_dev(dev), PMSG_SUSPEND);
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}
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static int
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i915_pm_resume(struct device *dev)
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{
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return i915_pci_resume(to_pci_dev(dev));
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}
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static int
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i915_pm_freeze(struct device *dev)
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{
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return i915_pci_suspend(to_pci_dev(dev), PMSG_FREEZE);
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}
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static int
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i915_pm_thaw(struct device *dev)
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{
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/* thaw during hibernate, do nothing! */
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return 0;
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}
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static int
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i915_pm_poweroff(struct device *dev)
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{
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return i915_pci_suspend(to_pci_dev(dev), PMSG_HIBERNATE);
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}
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static int
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i915_pm_restore(struct device *dev)
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{
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return i915_pci_resume(to_pci_dev(dev));
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}
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const struct dev_pm_ops i915_pm_ops = {
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.suspend = i915_pm_suspend,
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.resume = i915_pm_resume,
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.freeze = i915_pm_freeze,
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.thaw = i915_pm_thaw,
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.poweroff = i915_pm_poweroff,
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.restore = i915_pm_restore,
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};
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static struct vm_operations_struct i915_gem_vm_ops = {
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.fault = i915_gem_fault,
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.open = drm_gem_vm_open,
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@ -303,8 +349,6 @@ static struct drm_driver driver = {
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.lastclose = i915_driver_lastclose,
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.preclose = i915_driver_preclose,
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.postclose = i915_driver_postclose,
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.suspend = i915_suspend,
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.resume = i915_resume,
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.device_is_agp = i915_driver_device_is_agp,
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.enable_vblank = i915_enable_vblank,
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.disable_vblank = i915_disable_vblank,
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@ -344,10 +388,7 @@ static struct drm_driver driver = {
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.id_table = pciidlist,
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.probe = i915_pci_probe,
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.remove = i915_pci_remove,
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#ifdef CONFIG_PM
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.resume = i915_pci_resume,
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.suspend = i915_pci_suspend,
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#endif
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.driver.pm = &i915_pm_ops,
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},
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.name = DRIVER_NAME,
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