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* [PATCH v2] drm/i915/fbc: Apply wa_15018326506
@ 2025-11-11 12:46 Vinod Govindapillai
  2025-11-11 14:10 ` ✗ i915.CI.BAT: failure for drm/i915/fbc: Apply wa_15018326506 (rev2) Patchwork
                   ` (5 more replies)
  0 siblings, 6 replies; 8+ messages in thread
From: Vinod Govindapillai @ 2025-11-11 12:46 UTC (permalink / raw)
  To: intel-xe, intel-gfx
  Cc: vinod.govindapillai, uma.shankar, kunal1.joshi, jani.nikula,
	lucas.demarchi, matthew.d.roper

Disable FBC in bmg as per the wa recommendation.

v2: use the bmg platform instead of a specific stepping

Bspec: 74212
Signed-off-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_wa.c |  2 ++
 drivers/gpu/drm/i915/display/intel_display_wa.h |  1 +
 drivers/gpu/drm/i915/display/intel_fbc.c        | 10 ++++++++++
 3 files changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display_wa.c b/drivers/gpu/drm/i915/display/intel_display_wa.c
index e38e5e87877c..b2e71fa61c0a 100644
--- a/drivers/gpu/drm/i915/display/intel_display_wa.c
+++ b/drivers/gpu/drm/i915/display/intel_display_wa.c
@@ -70,6 +70,8 @@ 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->platform.battlemage;
 	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] 8+ messages in thread
end of thread, other threads:[~2025-11-18  9:32 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-11-11 12:46 [PATCH v2] drm/i915/fbc: Apply wa_15018326506 Vinod Govindapillai
2025-11-11 14:10 ` ✗ i915.CI.BAT: failure for drm/i915/fbc: Apply wa_15018326506 (rev2) Patchwork
2025-11-12  7:01 ` ✓ i915.CI.BAT: success " Patchwork
2025-11-12 10:21 ` ✓ i915.CI.Full: " Patchwork
2025-11-14 11:11 ` [PATCH v2] drm/i915/fbc: Apply wa_15018326506 Kahola, Mika
2025-11-14 12:28 ` Shankar, Uma
2025-11-14 12:59 ` Gustavo Sousa
2025-11-18  9:32   ` Govindapillai, Vinod

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