Hi,
Here's a second attempt at fixing the current issues we have with the
muxing code that results in a PV muxing its HVS muxing when only another
CRTC is modified by a state, or vblank timeouts when trying to wait for a
vblank on a single CRTC while another one is inactive but enabled.
Let me know what you think,
Maxime
Changes from v1:
- Dropped the code trying to access all the CRTCs (whether in the state
or not) state
- Added Hoegeun Kwon's tags
- Fixed a build bisection error
- Cleaned up the private state using drmm_add_action_or_reset
- Rebased on current linux next
Maxime Ripard (7):
drm/vc4: kms: Switch to drmm_add_action_or_reset
drm/vc4: kms: Remove useless define
drm/vc4: kms: Rename NUM_CHANNELS
drm/vc4: kms: Split the HVS muxing check in a separate function
drm/vc4: kms: Document the muxing corner cases
drm/vc4: kms: Store the unassigned channel list in the state
drm/vc4: kms: Don't disable the muxing of an active CRTC
drivers/gpu/drm/vc4/vc4_drv.h | 2 +
drivers/gpu/drm/vc4/vc4_kms.c | 247 +++++++++++++++++++++++++---------
2 files changed, 185 insertions(+), 64 deletions(-)
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2.28.0
