[Intel-gfx] [PATCH v2 2/4] drm/i915/psr: Fix the delayed vblank w/a

[Ville Syrjala]

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

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

Signed-off-by: Ville Syrjälä <ville.syrjala at 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 7a72e15e6836..eb9a0cd18652 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1170,13 +1170,8 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
 	 */
 	if (IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) ||
 	    IS_DISPLAY_VER(dev_priv, 12, 13)) {
-		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));
 	}
-- 
2.39.1