This defines the get_vrr_support hook for intel DP connector VRR support is set to true based on the DPCD ignore MSA and EDID monitor range
Cc: Jani Nikula jani.nikula@linux.intel.com Cc: Ville Syrjälä ville.syrjala@linux.intel.com Cc: Harry Wentland harry.wentland@amd.com Cc: Nicholas Kazlauskas Nicholas.Kazlauskas@amd.com Cc: Aditya Swarup aditya.swarup@intel.com Signed-off-by: Manasi Navare manasi.d.navare@intel.com --- .../drm/i915/display/intel_display_types.h | 3 +++ drivers/gpu/drm/i915/display/intel_dp.c | 19 +++++++++++++++++++ 2 files changed, 22 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 5e00e611f077..cd37ee6db1ff 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1353,6 +1353,9 @@ struct intel_dp {
/* Display stream compression testing */ bool force_dsc_en; + + /* DP Variable refresh rate/ Adaptive sync support */ + bool vrr_capable; };
enum lspcon_vendor { diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 0a417cd2af2b..ccf5d868b5c1 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -5860,6 +5860,24 @@ static int intel_dp_get_modes(struct drm_connector *connector) return 0; }
+static void intel_dp_get_vrr_support(struct drm_connector *connector) +{ + struct intel_dp *intel_dp = intel_attached_dp(to_intel_connector(connector)); + const struct drm_display_info *info = &connector->display_info; + struct drm_i915_private *dev_priv = to_i915(connector->dev); + + /* + * DP Sink is capable of Variable refresh video timings if + * Ignore MSA bit is set in DPCD. + * EDID monitor range also should be atleast 10 for reasonable + * Adaptive sync/ VRR end user experience. + */ + if (INTEL_GEN(dev_priv) >= 12 && + drm_dp_sink_is_capable_without_timing_msa(intel_dp->dpcd) && + info->monitor_range.max_vfreq - info->monitor_range.min_vfreq > 10) + intel_dp->vrr_capable = true; +} + static int intel_dp_connector_register(struct drm_connector *connector) { @@ -6756,6 +6774,7 @@ static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = .get_modes = intel_dp_get_modes, .mode_valid = intel_dp_mode_valid, .atomic_check = intel_dp_connector_atomic_check, + .get_adaptive_sync_support = intel_dp_get_vrr_support, };
static const struct drm_encoder_funcs intel_dp_enc_funcs = {