drm/virtio: Add PM notifier to restore objects after hibernation

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Register a PM notifier in virtio-gpu to handle suspend/hibernate
events. On PM_POST_HIBERNATION, restore all GPU objects so that the
driver can properly recover after resume.

Suggested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Cc: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patch.msgid.link/20260526192814.179673-4-dongwon.kim@intel.com
[dmitry.osipenko@collabora.com: rename vgdev->hibernation -> hibernated]
[dmitry.osipenko@collabora.com: restore objs on suspend error]
[dmitry.osipenko@collabora.com: no_cb int -> bool]
[dmitry.osipenko@collabora.com: don't include pm_runtime.h]
[dmitry.osipenko@collabora.com: proeprly handle failing register_pm_notifier]

...

This commit is contained in:

Dongwon Kim 2026-05-26 12:28:14 -07:00 • committed by Dmitry Osipenko

parent 54a9700482

commit 78e434bdc0

7 changed files with 85 additions and 7 deletions

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15

drivers/gpu/drm/virtio/virtgpu_drv.c

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8

drivers/gpu/drm/virtio/virtgpu_drv.h

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35

drivers/gpu/drm/virtio/virtgpu_kms.c

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17

drivers/gpu/drm/virtio/virtgpu_object.c

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2

drivers/gpu/drm/virtio/virtgpu_prime.c

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13

drivers/gpu/drm/virtio/virtgpu_vq.c

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2

drivers/gpu/drm/virtio/virtgpu_vram.c

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