[Intel-gfx] [PATCH 2/5] drm/i915/psr: Fix the delayed vblank w/a

[Ville Syrjala <ville.syrjala@linux.intel.com>]

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

Fix the code to correctly determine whether delayed vblank
is used or not.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 9820e5fdd087..70bd4e69834c 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1200,13 +1200,8 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
 		/* Wa_16013835468:tgl[b0+], dg1 */
 		if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_B0, STEP_FOREVER) ||
 		    IS_DG1(dev_priv)) {
-			u16 vtotal, vblank;
-
-			vtotal = crtc_state->uapi.adjusted_mode.crtc_vtotal -
-				 crtc_state->uapi.adjusted_mode.crtc_vdisplay;
-			vblank = crtc_state->uapi.adjusted_mode.crtc_vblank_end -
-				 crtc_state->uapi.adjusted_mode.crtc_vblank_start;
-			if (vblank > vtotal)
+			if (crtc_state->hw.adjusted_mode.crtc_vblank_start !=
+			    crtc_state->hw.adjusted_mode.crtc_vdisplay)
 				intel_de_rmw(dev_priv, GEN8_CHICKEN_DCPR_1, 0,
 					     wa_16013835468_bit_get(intel_dp));
 		}
-- 
2.38.2