From d66f470f4da9d8a2197305812b6e1bc860575340 Mon Sep 17 00:00:00 2001 From: Vinod Govindapillai Date: Mon, 28 Apr 2025 14:55:54 +0300 Subject: [PATCH] drm/i915/display: implement wa_14022269668 As per the WA, fbc stride need to be programmed always for bmg. Display driver handles the need to program the fbc stride using the override stride. So ensure that we always get the override stride in case of bmg v2: re-phrase the commit message. Bspec: 74212 Signed-off-by: Vinod Govindapillai Reviewed-by: Juha-Pekka Heikkila Link: https://lore.kernel.org/r/20250428115554.116780-1-vinod.govindapillai@intel.com --- drivers/gpu/drm/i915/display/intel_fbc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c index ce5b1e3f1c200..bed2bba20b555 100644 --- a/drivers/gpu/drm/i915/display/intel_fbc.c +++ b/drivers/gpu/drm/i915/display/intel_fbc.c @@ -252,9 +252,12 @@ static u16 intel_fbc_override_cfb_stride(const struct intel_plane_state *plane_s * Gen9 hw miscalculates cfb stride for linear as * PLANE_STRIDE*512 instead of PLANE_STRIDE*64, so * we always need to use the override there. + * + * wa_14022269668 For bmg, always program the FBC_STRIDE before fbc enable */ if (stride != stride_aligned || - (DISPLAY_VER(display) == 9 && fb->modifier == DRM_FORMAT_MOD_LINEAR)) + (DISPLAY_VER(display) == 9 && fb->modifier == DRM_FORMAT_MOD_LINEAR) || + display->platform.battlemage) return stride_aligned * 4 / 64; return 0; -- 2.50.1