[PATCH 11/16] drm/i915/vrr: Use fixed timings for platforms that support VRR
Ankit Nautiyal
ankit.k.nautiyal at intel.com
Sat Mar 22 04:59:17 UTC 2025
For fixed refresh rate use fixed timings for all platforms that support
VRR. For this add checks to avoid computing and reading VRR for
platforms that do not support VRR.
v2: Avoid touching check for VRR_CTL_FLIP_LINE_EN. (Ville)
v3: Avoid redundant statements in vrr_{compute/get}_config. (Ville)
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_vrr.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 1e654ceb5ef7..5892fcf7bf06 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -351,6 +351,9 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
int vmin, vmax;
+ if (!HAS_VRR(display))
+ return;
+
/*
* FIXME all joined pipes share the same transcoder.
* Need to account for that during VRR toggle/push/etc.
@@ -374,15 +377,12 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
vmax = vmin;
}
- if (vmin >= vmax)
- return;
-
crtc_state->vrr.vmin = vmin;
crtc_state->vrr.vmax = vmax;
crtc_state->vrr.flipline = crtc_state->vrr.vmin;
- if (crtc_state->uapi.vrr_enabled)
+ if (crtc_state->uapi.vrr_enabled && vmin < vmax)
intel_vrr_compute_vrr_timings(crtc_state);
else if (is_cmrr_frac_required(crtc_state) && is_edp)
intel_vrr_compute_cmrr_timings(crtc_state);
--
2.45.2
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