CVS commit: src/sys/external/bsd/drm2/dist

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Sat Oct 15 15:19:28 UTC 2022

Modified Files:
        src/sys/external/bsd/drm2/dist/drm: drm_drv.c drm_ioctl.c
        src/sys/external/bsd/drm2/dist/include/drm: drm_device.h drm_ioctl.h

Log Message:
drm: New mechanism to suspend ioctls during system suspend.

drm drivers must opt into this by calling drm_suspend_ioctl in their
driver suspend routine, and drm_resume_ioctl in their driver resume
routine.

This is a stop-gap measure -- it would be better to fill in the
pm_runtime_* API with new pmf(9) hooks to acquire/release references
to devices for coordinating with suspend/resume, but getting the
details right is tricky, and this stop-gap is enough to get i915
suspend/resume to work reliably on my Kaby Lake laptop.  Rather than
wait until I've got all the details right, let's just go with this
stop-gap for now.


To generate a diff of this commit:
cvs rdiff -u -r1.23 -r1.24 src/sys/external/bsd/drm2/dist/drm/drm_drv.c \
    src/sys/external/bsd/drm2/dist/drm/drm_ioctl.c
cvs rdiff -u -r1.10 -r1.11 \
    src/sys/external/bsd/drm2/dist/include/drm/drm_device.h
cvs rdiff -u -r1.4 -r1.5 \
    src/sys/external/bsd/drm2/dist/include/drm/drm_ioctl.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.