[Intel-gfx] [PATCH 08/12] drm/i915: Validate that the timings are within the VRR range

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Let's assume there are some crazy displays where the high
end of the VRR range ends up being lower than the refresh
rate as determined by the actual timings. In that case
when we toggle VRR on/off we would step outside the VRR
range when toggling VRR on/off. Let's just make sure that
never happens by not using VRR in such cases. If the user
really wants VRR they should then select the timings to
land within the VRR range.

Cc: Manasi Navare <navaremanasi at chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_vrr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 6ef782538337..12731ad725a8 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -117,10 +117,10 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
 	const struct drm_display_info *info = &connector->base.display_info;
 	int vmin, vmax;
 
-	if (!intel_vrr_is_capable(connector))
+	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
 		return;
 
-	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
+	if (!intel_vrr_is_in_range(connector, drm_mode_vrefresh(adjusted_mode)))
 		return;
 
 	vmin = DIV_ROUND_UP(adjusted_mode->crtc_clock * 1000,
-- 
2.41.0