77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2023 Intel Corporation
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*/
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#include <drm/drm_print.h>
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#include "i915_reg.h"
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#include "intel_de.h"
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#include "intel_display_core.h"
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#include "intel_display_regs.h"
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#include "intel_display_wa.h"
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static void gen11_display_wa_apply(struct intel_display *display)
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{
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/* Wa_14010594013 */
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intel_de_rmw(display, GEN8_CHICKEN_DCPR_1, 0, ICL_DELAY_PMRSP);
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}
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static void xe_d_display_wa_apply(struct intel_display *display)
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{
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/* Wa_14013723622 */
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intel_de_rmw(display, CLKREQ_POLICY, CLKREQ_POLICY_MEM_UP_OVRD, 0);
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}
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static void adlp_display_wa_apply(struct intel_display *display)
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{
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/* Wa_22011091694:adlp */
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intel_de_rmw(display, GEN9_CLKGATE_DIS_5, 0, DPCE_GATING_DIS);
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/* Bspec/49189 Initialize Sequence */
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intel_de_rmw(display, GEN8_CHICKEN_DCPR_1, DDI_CLOCK_REG_ACCESS, 0);
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}
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void intel_display_wa_apply(struct intel_display *display)
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{
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if (display->platform.alderlake_p)
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adlp_display_wa_apply(display);
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else if (DISPLAY_VER(display) == 12)
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xe_d_display_wa_apply(display);
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else if (DISPLAY_VER(display) == 11)
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gen11_display_wa_apply(display);
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}
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/*
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* Wa_16025573575:
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* Fixes: Issue with bitbashing on Xe3 based platforms.
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* Workaround: Set masks bits in GPIO CTL and preserve it during bitbashing sequence.
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*/
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static bool intel_display_needs_wa_16025573575(struct intel_display *display)
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{
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return DISPLAY_VERx100(display) == 3000 || DISPLAY_VERx100(display) == 3002;
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}
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/*
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* Wa_14011503117:
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* Fixes: Before enabling the scaler DE fatal error is masked
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* Workaround: Unmask the DE fatal error register after enabling the scaler
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* and after waiting of at least 1 frame.
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*/
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bool __intel_display_wa(struct intel_display *display, enum intel_display_wa wa, const char *name)
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{
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switch (wa) {
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case INTEL_DISPLAY_WA_16023588340:
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return intel_display_needs_wa_16023588340(display);
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case INTEL_DISPLAY_WA_16025573575:
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return intel_display_needs_wa_16025573575(display);
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case INTEL_DISPLAY_WA_14011503117:
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return DISPLAY_VER(display) == 13;
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default:
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drm_WARN(display->drm, 1, "Missing Wa number: %s\n", name);
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break;
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}
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return false;
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}
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