PD#SWPL-144894
Problem:
Still running commit and wait vblank ioctl
cause shutdown not to work.
Solution:
1.drm_wait_vblank_ioctl can suspend on wait vblank,
so use helper shutdown to disable KMS and disable irq.
2.drm_wait_vblank_ioctl can also suspend on lock before
waiting vblank, so force drm_device.num_crtc=0 to prevent it.
3.running commit can be suspended by blocking the atomic ioctl
thread and commit thread. For commit thread, flush worker of
thread and stop it.
Verify:
yocto + S905y4
android + s905y4
yocto + t7c
android + t7c
Test:
DRM-OSD-30
Change-Id: Id7c30e3afbcc83051ef4d1c4933c8e0140aebfd1
Signed-off-by: yujun.zhang <yujun.zhang@amlogic.com>
yujun.zhang
7de96f728a