From: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Date: Wed, 20 May 2026 14:51:25 +0000 (+0300)
Subject: drm/msm/adreno: use version ranges in A8xx UBWC code
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=579f66114027467246e6c480ec028a22dcf25034;p=thirdparty%2Fkernel%2Flinux.git

drm/msm/adreno: use version ranges in A8xx UBWC code

In order to simplify handling of UBWC minor revisions (like 3.1 or 4.3)
use version ranges instead of a case switch.

Reviewed-by: Akhil P Oommen <akhilpo@oss.qualcomm.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/726506/
Link: https://lore.kernel.org/r/20260520-ubwc-rework-v5-18-72f2749bc807@oss.qualcomm.com
---

diff --git a/drivers/gpu/drm/msm/adreno/a8xx_gpu.c b/drivers/gpu/drm/msm/adreno/a8xx_gpu.c
index 5c73a9ebb22bb..29d559fe46834 100644
--- a/drivers/gpu/drm/msm/adreno/a8xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a8xx_gpu.c
@@ -286,26 +286,24 @@ static void a8xx_set_ubwc_config(struct msm_gpu *gpu)
 	u32 hbb, hbb_hi, hbb_lo, mode;
 	u8 uavflagprd_inv = 2;
 
-	switch (ubwc_version) {
-	case UBWC_6_0:
+	if (ubwc_version > UBWC_6_0)
+		dev_err(&gpu->pdev->dev, "Unknown UBWC version: 0x%x\n", ubwc_version);
+
+	if (ubwc_version == UBWC_6_0)
 		yuvnotcomptofc = true;
-		rgb565_predicator = true;
-		break;
-	case UBWC_5_0:
-		rgb565_predicator = true;
-		break;
-	case UBWC_4_0:
-		rgb565_predicator = true;
-		fp16compoptdis = true;
+
+	if (ubwc_version < UBWC_5_0 &&
+	    ubwc_version >= UBWC_4_0)
 		rgba8888_lossless = true;
-		break;
-	case UBWC_3_0:
+
+	if (ubwc_version < UBWC_4_3)
 		fp16compoptdis = true;
-		break;
-	default:
-		dev_err(&gpu->pdev->dev, "Unknown UBWC version: 0x%x\n", ubwc_version);
-		break;
-	}
+
+	if (cfg->ubwc_enc_version >= UBWC_4_0)
+		rgb565_predicator = true;
+
+	if (ubwc_version < UBWC_3_0)
+		dev_err(&gpu->pdev->dev, "Unsupported UBWC version: 0x%x\n", ubwc_version);
 
 	mode = qcom_ubwc_version_tag(cfg);