On Thu, 17 Feb 2022, "Navare, Manasi" <manasi.d.navare@xxxxxxxxx> wrote:
> Hi Jani,
>
> This addresses the review comments, could you please take a look at thsi patch?
Sorry for the delay,
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
>
> Manasi
>
> On Tue, Feb 15, 2022 at 12:26:01PM -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)
>>
>> Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
>> Signed-off-by: Manasi Navare <manasi.d.navare@xxxxxxxxx>
>> ---
>> drivers/gpu/drm/i915/display/intel_dp.c | 17 +++++++++++++----
>> 1 file changed, 13 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
>> index 1046e7fe310a..929e9b6febf1 100644
>> --- a/drivers/gpu/drm/i915/display/intel_dp.c
>> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
>> @@ -4455,6 +4455,12 @@ 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",
>> @@ -4569,15 +4575,18 @@ 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;
>>
>> - if (intel_vrr_is_capable(connector))
>> - drm_connector_set_vrr_capable_property(connector,
>> - true);
>> + num_modes = intel_connector_update_modes(connector, edid);
>> + vrr_capable = intel_vrr_is_capable(connector);
>> + 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
>>
--
Jani Nikula, Intel Open Source Graphics Center
