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

quic-kdybcio · robclark · commit 5a9c1bea011f · 2025-05-10T09:05:20.000-07:00
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: 192f4ee ("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
@@ -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;
 	}

Original file line number	Diff line number	Diff line change
`@@ -655,7 +655,6 @@ static void a6xx_calc_ubwc_config(struct adreno_gpu *gpu)`
`655`	`655`	`if (adreno_is_7c3(gpu)) {`
`656`	`656`	`gpu->ubwc_config.highest_bank_bit = 14;`
`657`	`657`	`gpu->ubwc_config.amsbc = 1;`
`658`		`- gpu->ubwc_config.rgb565_predicator = 1;`
`659`	`658`	`gpu->ubwc_config.uavflagprd_inv = 2;`
`660`	`659`	`gpu->ubwc_config.macrotile_mode = 1;`
`661`	`660`	`}`