drm/amd/display: set correct v_total_min and v_total_max for dce.

Signed-off-by: NYongqiang Sun <yongqiang.sun@amd.com>
Acked-by: NHarry Wentland <Harry.Wentland@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c

@@ -393,12 +393,12 @@ void dce110_timing_generator_set_drr(
 		params->vertical_total_min > 0) {
 
 		set_reg_field_value(v_total_max,
-				params->vertical_total_max - 1,
+				params->vertical_total_max,
 				CRTC_V_TOTAL_MAX,
 				CRTC_V_TOTAL_MAX);
 
 		set_reg_field_value(v_total_min,
-				params->vertical_total_min - 1,
+				params->vertical_total_min,
 				CRTC_V_TOTAL_MIN,
 				CRTC_V_TOTAL_MIN);
 

drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c

@@ -540,10 +540,10 @@ void dce120_timing_generator_set_drr(
 
 		CRTC_REG_UPDATE(
 				CRTC0_CRTC_V_TOTAL_MIN,
-				CRTC_V_TOTAL_MIN, params->vertical_total_min - 1);
+				CRTC_V_TOTAL_MIN, params->vertical_total_min);
 		CRTC_REG_UPDATE(
 				CRTC0_CRTC_V_TOTAL_MAX,
-				CRTC_V_TOTAL_MAX, params->vertical_total_max - 1);
+				CRTC_V_TOTAL_MAX, params->vertical_total_max);
 		CRTC_REG_SET_N(CRTC0_CRTC_V_TOTAL_CONTROL, 6,
 				FD(CRTC0_CRTC_V_TOTAL_CONTROL__CRTC_V_TOTAL_MIN_SEL), 1,
 				FD(CRTC0_CRTC_V_TOTAL_CONTROL__CRTC_V_TOTAL_MAX_SEL), 1,