diff options
| author | Imre Deak <[email protected]> | 2024-07-22 16:55:02 +0000 |
|---|---|---|
| committer | Imre Deak <[email protected]> | 2024-07-31 15:45:59 +0000 |
| commit | e44bc451aa4b08845c238028daafb4eaffb573a3 (patch) | |
| tree | a981c85bc982f183280fef0c792a656662f78e5c /drivers/gpu/drm/i915/display/intel_dp_mst.h | |
| parent | drm/i915/dp_mst: Reprobe the MST topology after a link parameter change (diff) | |
| download | kernel-e44bc451aa4b08845c238028daafb4eaffb573a3.tar.gz kernel-e44bc451aa4b08845c238028daafb4eaffb573a3.zip | |
drm/i915/dp_mst: Ensure link parameters are up-to-date for a disabled link
As explained in the previous patch, the MST link BW reported by branch
devices during topology probing/path resources enumeration depends on
the link parameters programmed to DPCD to be up-to-date. After a sink is
plugged this is not ensured, as those DPCD values start out zeroed. The
target link parameters (for a subsequent modeset) are the maximum that
is supported, so make sure these maximum values are programmed before the
topology probing.
Reviewed-by: Suraj Kandpal <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dp_mst.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp_mst.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.h b/drivers/gpu/drm/i915/display/intel_dp_mst.h index 8ca1d599091c..fba76454fa67 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.h +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.h @@ -27,5 +27,6 @@ int intel_dp_mst_atomic_check_link(struct intel_atomic_state *state, struct intel_link_bw_limits *limits); bool intel_dp_mst_crtc_needs_modeset(struct intel_atomic_state *state, struct intel_crtc *crtc); +void intel_dp_mst_prepare_probe(struct intel_dp *intel_dp); #endif /* __INTEL_DP_MST_H__ */ |