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* [PATCH] drm/i915/fbc: Apply wa_15018326506
@ 2025-11-07 10:07 Vinod Govindapillai
  2025-11-07 10:16 ` Jani Nikula
                   ` (3 more replies)
  0 siblings, 4 replies; 11+ messages in thread
From: Vinod Govindapillai @ 2025-11-07 10:07 UTC (permalink / raw)
  To: intel-xe, intel-gfx; +Cc: vinod.govindapillai, uma.shankar, kunal1.joshi

Disable FBC as part for the wa for the bmg variant

Bspec: 74212
Signed-off-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_wa.c |  4 ++++
 drivers/gpu/drm/i915/display/intel_display_wa.h |  1 +
 drivers/gpu/drm/i915/display/intel_fbc.c        | 10 ++++++++++
 3 files changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display_wa.c b/drivers/gpu/drm/i915/display/intel_display_wa.c
index c528aaa679ca..ba2272d85a04 100644
--- a/drivers/gpu/drm/i915/display/intel_display_wa.c
+++ b/drivers/gpu/drm/i915/display/intel_display_wa.c
@@ -10,6 +10,7 @@
 #include "intel_display_core.h"
 #include "intel_display_regs.h"
 #include "intel_display_wa.h"
+#include "intel_step.h"
 
 static void gen11_display_wa_apply(struct intel_display *display)
 {
@@ -69,6 +70,9 @@ bool __intel_display_wa(struct intel_display *display, enum intel_display_wa wa,
 		return DISPLAY_VER(display) == 13;
 	case INTEL_DISPLAY_WA_22014263786:
 		return IS_DISPLAY_VERx100(display, 1100, 1400);
+	case INTEL_DISPLAY_WA_15018326506:
+		return DISPLAY_VERx100(display) == 1401 &&
+		       INTEL_DISPLAY_STEP(display) == STEP_C0;
 	default:
 		drm_WARN(display->drm, 1, "Missing Wa number: %s\n", name);
 		break;
diff --git a/drivers/gpu/drm/i915/display/intel_display_wa.h b/drivers/gpu/drm/i915/display/intel_display_wa.h
index 3644e8e2b724..f648b00cb97d 100644
--- a/drivers/gpu/drm/i915/display/intel_display_wa.h
+++ b/drivers/gpu/drm/i915/display/intel_display_wa.h
@@ -26,6 +26,7 @@ enum intel_display_wa {
 	INTEL_DISPLAY_WA_16025573575,
 	INTEL_DISPLAY_WA_14011503117,
 	INTEL_DISPLAY_WA_22014263786,
+	INTEL_DISPLAY_WA_15018326506,
 };
 
 bool __intel_display_wa(struct intel_display *display, enum intel_display_wa wa, const char *name);
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index a1e3083022ee..16cd99db2978 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -1521,6 +1521,16 @@ static int intel_fbc_check_plane(struct intel_atomic_state *state,
 		return 0;
 	}
 
+	/*
+	 * wa_15018326506:
+	 * Fixes: Underrun during media decode
+	 * Workaround: Do not enable FBC
+	 */
+	if (intel_display_wa(display, 15018326506)) {
+		plane_state->no_fbc_reason = "Wa_15018326506";
+		return 0;
+	}
+
 	/* WaFbcTurnOffFbcWhenHyperVisorIsUsed:skl,bxt */
 	if (intel_display_vtd_active(display) &&
 	    (display->platform.skylake || display->platform.broxton)) {
-- 
2.43.0


^ permalink raw reply related	[flat|nested] 11+ messages in thread

end of thread, other threads:[~2025-11-09  0:21 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-11-07 10:07 [PATCH] drm/i915/fbc: Apply wa_15018326506 Vinod Govindapillai
2025-11-07 10:16 ` Jani Nikula
2025-11-07 10:33   ` Govindapillai, Vinod
2025-11-07 11:08     ` Jani Nikula
2025-11-07 13:45       ` Lucas De Marchi
2025-11-07 16:01         ` Govindapillai, Vinod
2025-11-07 16:19           ` Lucas De Marchi
2025-11-07 16:43             ` Matt Roper
2025-11-07 10:58 ` ✓ CI.KUnit: success for " Patchwork
2025-11-07 11:40 ` ✓ Xe.CI.BAT: " Patchwork
2025-11-09  0:21 ` ✗ Xe.CI.Full: failure " Patchwork

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