drm/i915/hdmi: Use VRR Timing generator for HDMI for fixed_rr

Currently VRR is not supported with HDMI, but we can still leverage
the VRR Timing Generator to achieve a fixed refresh rate.
Call intel_vrr_compute_config() for HDMI which will handle the vrr
timings to have fixed refresh rate with VRR Timing Generator.

v2: Improve commit message. (Ville).

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com> (#v1)
Link: https://lore.kernel.org/r/20250324133248.4071909-2-ankit.k.nautiyal@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 33b8d5229db00b2b14ac8bb6b982b3cdc8a1566f..f9fa17e1f584bdaa0b0ce9cdedd95472292d26fc 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -64,6 +64,7 @@
 #include "intel_panel.h"
 #include "intel_pfit.h"
 #include "intel_snps_phy.h"
+#include "intel_vrr.h"
 
 static void
 assert_hdmi_port_disabled(struct intel_hdmi *intel_hdmi)
@@ -2384,6 +2385,8 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
                }
        }
 
+       intel_vrr_compute_config(pipe_config, conn_state);
+
        intel_hdmi_compute_gcp_infoframe(encoder, pipe_config,
                                         conn_state);