From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Date: Mon, 5 May 2025 11:13:40 +0000 (+0200)
Subject: drm/msm/a6xx: Disable rgb565_predicator on Adreno 7c3
X-Git-Tag: v6.16-rc1~144^2~4^2~28
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5a9c1bea011fb42088ba08ceaa252fb20e695626;p=thirdparty%2Fkernel%2Fstable.git

drm/msm/a6xx: Disable rgb565_predicator on Adreno 7c3

This feature is supposed to be enabled with UBWC v4 or later.
Implementations of this SKU feature an effective UBWC version of 3, so
disable it, in line with the BSP kernel.

Reported-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Fixes: 192f4ee3e408 ("drm/msm/a6xx: Add support for Adreno 7c Gen 3 gpu")
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/651759/
Signed-off-by: Rob Clark <robdclark@chromium.org>
---

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 2289fecbbbf14..bf3758f010f40 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -655,7 +655,6 @@ static void a6xx_calc_ubwc_config(struct adreno_gpu *gpu)
 	if (adreno_is_7c3(gpu)) {
 		gpu->ubwc_config.highest_bank_bit = 14;
 		gpu->ubwc_config.amsbc = 1;
-		gpu->ubwc_config.rgb565_predicator = 1;
 		gpu->ubwc_config.uavflagprd_inv = 2;
 		gpu->ubwc_config.macrotile_mode = 1;
 	}