1// SPDX-License-Identifier: MIT
 2/*
 3 * Copyright © 2023 Intel Corporation
 4 */
 5
 6#include "i915_drv.h"
 7#include "i915_reg.h"
 8#include "intel_de.h"
 9#include "intel_display_wa.h"
10
11static void gen11_display_wa_apply(struct drm_i915_private *i915)
12{
13	/* Wa_14010594013 */
14	intel_de_rmw(i915, GEN8_CHICKEN_DCPR_1, 0, ICL_DELAY_PMRSP);
15}
16
17static void xe_d_display_wa_apply(struct drm_i915_private *i915)
18{
19	/* Wa_14013723622 */
20	intel_de_rmw(i915, CLKREQ_POLICY, CLKREQ_POLICY_MEM_UP_OVRD, 0);
21}
22
23static void adlp_display_wa_apply(struct drm_i915_private *i915)
24{
25	/* Wa_22011091694:adlp */
26	intel_de_rmw(i915, GEN9_CLKGATE_DIS_5, 0, DPCE_GATING_DIS);
27
28	/* Bspec/49189 Initialize Sequence */
29	intel_de_rmw(i915, GEN8_CHICKEN_DCPR_1, DDI_CLOCK_REG_ACCESS, 0);
30}
31
32void intel_display_wa_apply(struct drm_i915_private *i915)
33{
34	if (IS_ALDERLAKE_P(i915))
35		adlp_display_wa_apply(i915);
36	else if (DISPLAY_VER(i915) == 12)
37		xe_d_display_wa_apply(i915);
38	else if (DISPLAY_VER(i915) == 11)
39		gen11_display_wa_apply(i915);
40}