1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2023 Intel Corporation 4 */ 5 6 #include "i915_reg.h" 7 #include "intel_de.h" 8 #include "intel_display_core.h" 9 #include "intel_display_regs.h" 10 #include "intel_display_wa.h" 11 12 static void gen11_display_wa_apply(struct intel_display *display) 13 { 14 /* Wa_14010594013 */ 15 intel_de_rmw(display, GEN8_CHICKEN_DCPR_1, 0, ICL_DELAY_PMRSP); 16 } 17 18 static void xe_d_display_wa_apply(struct intel_display *display) 19 { 20 /* Wa_14013723622 */ 21 intel_de_rmw(display, CLKREQ_POLICY, CLKREQ_POLICY_MEM_UP_OVRD, 0); 22 } 23 24 static void adlp_display_wa_apply(struct intel_display *display) 25 { 26 /* Wa_22011091694:adlp */ 27 intel_de_rmw(display, GEN9_CLKGATE_DIS_5, 0, DPCE_GATING_DIS); 28 29 /* Bspec/49189 Initialize Sequence */ 30 intel_de_rmw(display, GEN8_CHICKEN_DCPR_1, DDI_CLOCK_REG_ACCESS, 0); 31 } 32 33 void intel_display_wa_apply(struct intel_display *display) 34 { 35 if (display->platform.alderlake_p) 36 adlp_display_wa_apply(display); 37 else if (DISPLAY_VER(display) == 12) 38 xe_d_display_wa_apply(display); 39 else if (DISPLAY_VER(display) == 11) 40 gen11_display_wa_apply(display); 41 } 42