[PATCH v4 01/17] drm/i915/vrr: Fix the adjustment for the fixed rr vtotal for Display < 13

[Mitul Golani]

From: Ankit Nautiyal <ankit.k.nautiyal at intel.com>

Correct the adjustment required for fixed refresh rate mode for Display
< 13. The vblank delay must be added and not subtracted to get the fixed
rr vtotal.

Fixes: bef1e60c7087 ("drm/i915/vrr: Prepare for fixed refresh rate timings")
Cc: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
---
 drivers/gpu/drm/i915/display/intel_vrr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index c6565baf815a..45445198129f 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -263,7 +263,7 @@ int intel_vrr_fixed_rr_vtotal(const struct intel_crtc_state *crtc_state)
 	if (DISPLAY_VER(display) >= 13)
 		return crtc_vtotal;
 	else
-		return crtc_vtotal -
+		return crtc_vtotal +
 			intel_vrr_real_vblank_delay(crtc_state);
 }
 
-- 
2.48.1