Hi Jani,
I have addressed your review comments, could you take a look at this patch, this is needed by one of our customers.
Manasi
On Wed, Jan 26, 2022 at 11:53:04AM -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)
> Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
> Signed-off-by: Manasi Navare <manasi.d.navare@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_dp.c | 16 ++++++++++++----
> 1 file changed, 12 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 4d4579a301f6..687cb37bb22a 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -4446,6 +4446,12 @@ intel_dp_detect(struct drm_connector *connector,
> memset(&intel_dp->compliance, 0, sizeof(intel_dp->compliance));
> memset(intel_dp->dsc_dpcd, 0, sizeof(intel_dp->dsc_dpcd));
>
> + /* Reset VRR Capable property */
> + drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s] VRR capable: FALSE\n",
> + connector->base.id, connector->name);
> + drm_connector_set_vrr_capable_property(connector,
> + false);
> +
> if (intel_dp->is_mst) {
> drm_dbg_kms(&dev_priv->drm,
> "MST device may have disappeared %d vs %d\n",
> @@ -4560,15 +4566,17 @@ static int intel_dp_get_modes(struct drm_connector *connector)
> {
> struct intel_connector *intel_connector = to_intel_connector(connector);
> struct edid *edid;
> + struct drm_i915_private *i915 = to_i915(connector->dev);
> int num_modes = 0;
>
> edid = intel_connector->detect_edid;
> if (edid) {
> - num_modes = intel_connector_update_modes(connector, edid);
> + bool vrr_capable = intel_vrr_is_capable(connector);
>
> - if (intel_vrr_is_capable(connector))
> - drm_connector_set_vrr_capable_property(connector,
> - true);
> + num_modes = intel_connector_update_modes(connector, edid);
> + drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] VRR capable: %s\n",
> + connector->base.id, connector->name, yesno(vrr_capable));
> + drm_connector_set_vrr_capable_property(connector, vrr_capable);
> }
>
> /* Also add fixed mode, which may or may not be present in EDID */
> --
> 2.19.1
>
