diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_vrr.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_vrr.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c index 04250a0fec3c..5eac99021875 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.c +++ b/drivers/gpu/drm/i915/display/intel_vrr.c @@ -142,11 +142,16 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state, * For XE_LPD+, we use guardband and pipeline override * is deprecated. */ - if (DISPLAY_VER(i915) >= 13) + if (DISPLAY_VER(i915) >= 13) { + /* + * FIXME: Subtract Window2 delay from below value. + * + * Window2 specifies time required to program DSB (Window2) in + * number of scan lines. Assuming 0 for no DSB. + */ crtc_state->vrr.guardband = - crtc_state->vrr.vmin - adjusted_mode->crtc_vdisplay - - i915->window2_delay; - else + crtc_state->vrr.vmin - adjusted_mode->crtc_vdisplay; + } else { /* * FIXME: s/4/framestart_delay/ to get consistent * earliest/latest points for register latching regardless @@ -159,6 +164,7 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state, */ crtc_state->vrr.pipeline_full = min(255, crtc_state->vrr.vmin - adjusted_mode->crtc_vdisplay - 4 - 1); + } crtc_state->mode_flags |= I915_MODE_FLAG_VRR; } |