On Thu, Mar 10, 2022 at 01:43:57AM +0200, Ville Syrjälä wrote: > On Thu, Mar 03, 2022 at 03:32:22PM -0800, Manasi Navare wrote: > > With some VRR panels, user can turn VRR ON/OFF on the fly from the panel settings. > > When VRR is turned OFF ,sends a long HPD to the driver clearing the Ignore MSA bit > > in the DPCD. Currently the driver parses that onevery HPD but fails to reset > > the corresponding VRR Capable Connector property. > > Hence the userspace still sees this as VRR Capable panel which is incorrect. > > > > Fix this by explicitly resetting the connector property. > > > > v2: Reset vrr capable if status == connector_disconnected > > v3: Use i915 and use bool vrr_capable (Jani Nikula) > > v4: Move vrr_capable to after update modes call (Jani N) > > Remove the redundant comment (Jan N) > > v5: Fixes the regression on older platforms by reseting the VRR > > only if HAS_VRR > > v6: Remove the checks from driver, add in drm core before > > setting VRR prop (Ville) > > v7: Move VRR set/reset to set/unset_edid (Ville) > > > > Cc: Jani Nikula <jani.nikula@xxxxxxxxx> > > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > Fixes: 390a1f8beb87 ("Revert "drm/i915/display/vrr: Reset VRR capable property on a long hpd") > > Signed-off-by: Manasi Navare <manasi.d.navare@xxxxxxxxx> > > Looks reasoanble enough to me. > Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > But be careful when pushing this since I don't think > the drm_connector_set_vrr_capable_property() change has > percolated into drm-intel-next yet. Okay I can wait then to push until that gets percolated from drm-misc Manasi > > > --- > > drivers/gpu/drm/i915/display/intel_dp.c | 17 +++++++++++------ > > 1 file changed, 11 insertions(+), 6 deletions(-) > > > > diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c > > index d6ef33096bb6..1d0f8fc39005 100644 > > --- a/drivers/gpu/drm/i915/display/intel_dp.c > > +++ b/drivers/gpu/drm/i915/display/intel_dp.c > > @@ -4385,13 +4385,20 @@ intel_dp_update_420(struct intel_dp *intel_dp) > > static void > > intel_dp_set_edid(struct intel_dp *intel_dp) > > { > > + struct drm_i915_private *i915 = dp_to_i915(intel_dp); > > struct intel_connector *connector = intel_dp->attached_connector; > > struct edid *edid; > > + bool vrr_capable; > > > > intel_dp_unset_edid(intel_dp); > > edid = intel_dp_get_edid(intel_dp); > > connector->detect_edid = edid; > > > > + vrr_capable = intel_vrr_is_capable(&connector->base); > > + drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] VRR capable: %s\n", > > + connector->base.base.id, connector->base.name, str_yes_no(vrr_capable)); > > + drm_connector_set_vrr_capable_property(&connector->base, vrr_capable); > > + > > intel_dp_update_dfp(intel_dp, edid); > > intel_dp_update_420(intel_dp); > > > > @@ -4424,6 +4431,9 @@ intel_dp_unset_edid(struct intel_dp *intel_dp) > > > > intel_dp->dfp.ycbcr_444_to_420 = false; > > connector->base.ycbcr_420_allowed = false; > > + > > + drm_connector_set_vrr_capable_property(&connector->base, > > + false); > > } > > > > static int > > @@ -4574,14 +4584,9 @@ static int intel_dp_get_modes(struct drm_connector *connector) > > int num_modes = 0; > > > > edid = intel_connector->detect_edid; > > - if (edid) { > > + if (edid) > > num_modes = intel_connector_update_modes(connector, edid); > > > > - if (intel_vrr_is_capable(connector)) > > - drm_connector_set_vrr_capable_property(connector, > > - true); > > - } > > - > > /* Also add fixed mode, which may or may not be present in EDID */ > > if (intel_dp_is_edp(intel_attached_dp(intel_connector)) && > > intel_connector->panel.fixed_mode) { > > -- > > 2.19.1 > > -- > Ville Syrjälä > Intel