From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Date: Thu, 26 Jun 2025 09:02:32 +0000 (+0200)
Subject: drm/msm/a6xx: Resolve the meaning of AMSBC
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=367380d2b5500fc29b87953e2c6da872bc0fb2e5;p=thirdparty%2Flinux.git

drm/msm/a6xx: Resolve the meaning of AMSBC

The bit must be set to 1 if the UBWC encoder version is >= 3.0, drop it
as a separate field.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/660967/
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
---

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 2604893847085..77e27846828a1 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -636,21 +636,16 @@ static int a6xx_calc_ubwc_config(struct adreno_gpu *gpu)
 
 	if (adreno_is_a621(gpu)) {
 		gpu->ubwc_config.highest_bank_bit = 13;
-		gpu->ubwc_config.amsbc = 1;
 		gpu->ubwc_config.uavflagprd_inv = 2;
 	}
 
 	if (adreno_is_a623(gpu)) {
 		gpu->ubwc_config.highest_bank_bit = 16;
-		gpu->ubwc_config.amsbc = 1;
 		gpu->ubwc_config.rgb565_predicator = 1;
 		gpu->ubwc_config.uavflagprd_inv = 2;
 		gpu->ubwc_config.macrotile_mode = 1;
 	}
 
-	if (adreno_is_a640_family(gpu))
-		gpu->ubwc_config.amsbc = 1;
-
 	if (adreno_is_a680(gpu))
 		gpu->ubwc_config.macrotile_mode = 1;
 
@@ -661,7 +656,6 @@ static int a6xx_calc_ubwc_config(struct adreno_gpu *gpu)
 	    adreno_is_a740_family(gpu)) {
 		/* TODO: get ddr type from bootloader and use 2 for LPDDR4 */
 		gpu->ubwc_config.highest_bank_bit = 16;
-		gpu->ubwc_config.amsbc = 1;
 		gpu->ubwc_config.rgb565_predicator = 1;
 		gpu->ubwc_config.uavflagprd_inv = 2;
 		gpu->ubwc_config.macrotile_mode = 1;
@@ -669,7 +663,6 @@ static int a6xx_calc_ubwc_config(struct adreno_gpu *gpu)
 
 	if (adreno_is_a663(gpu)) {
 		gpu->ubwc_config.highest_bank_bit = 13;
-		gpu->ubwc_config.amsbc = 1;
 		gpu->ubwc_config.rgb565_predicator = 1;
 		gpu->ubwc_config.uavflagprd_inv = 2;
 		gpu->ubwc_config.macrotile_mode = 1;
@@ -678,7 +671,6 @@ static int 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.uavflagprd_inv = 2;
 		gpu->ubwc_config.macrotile_mode = 1;
 	}
@@ -694,6 +686,7 @@ static int a6xx_calc_ubwc_config(struct adreno_gpu *gpu)
 static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
 {
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+	const struct qcom_ubwc_cfg_data *cfg = adreno_gpu->common_ubwc_cfg;
 	/*
 	 * We subtract 13 from the highest bank bit (13 is the minimum value
 	 * allowed by hw) and write the lowest two bits of the remaining value
@@ -701,6 +694,7 @@ static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
 	 */
 	BUG_ON(adreno_gpu->ubwc_config.highest_bank_bit < 13);
 	u32 hbb = adreno_gpu->ubwc_config.highest_bank_bit - 13;
+	bool amsbc = cfg->ubwc_enc_version >= UBWC_3_0;
 	u32 hbb_hi = hbb >> 2;
 	u32 hbb_lo = hbb & 3;
 	u32 ubwc_mode = adreno_gpu->ubwc_config.ubwc_swizzle & 1;
@@ -709,7 +703,7 @@ static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
 	gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL,
 		  level2_swizzling_dis << 12 |
 		  adreno_gpu->ubwc_config.rgb565_predicator << 11 |
-		  hbb_hi << 10 | adreno_gpu->ubwc_config.amsbc << 4 |
+		  hbb_hi << 10 | amsbc << 4 |
 		  adreno_gpu->ubwc_config.min_acc_len << 3 |
 		  hbb_lo << 1 | ubwc_mode);