drm/i915: Update TRANS_SET_CONTEXT_LATENCY during LRR updates

Update TRANS_SET_CONTEXT_LATENCY in intel_set_transcoder_timings_lrr()
as well. While for actual LRR updates this should not change, I want
to reuse this code to also sanitize the vblank delay during boot,
and in that case we do need to update this.

Cc: Paz Zcharya <pazz@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250116201637.22486-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 29879ad0ed5680f0b974157fcd67cca2d06899ce..e6501143ab7cf1661deed0700d88b85d8f10d15c 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2930,6 +2930,10 @@ static void intel_set_transcoder_timings_lrr(const struct intel_crtc_state *crtc
        }
 
        if (DISPLAY_VER(dev_priv) >= 13) {
+               intel_de_write(dev_priv,
+                              TRANS_SET_CONTEXT_LATENCY(dev_priv, cpu_transcoder),
+                              crtc_vblank_start - crtc_vdisplay);
+
                /*
                 * VBLANK_START not used by hw, just clear it
                 * to make it stand out in register dumps.