linux-kernel - [PATCH v3 2/6] drm/msm/a6xx: Use descriptive bitfield names for CP_PROTECT

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Message-Id: <20230517-topic-a7xx_prep-v3-2-a3ce3725385b@linaro.org>
Date:   Mon, 19 Jun 2023 18:44:22 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH v3 2/6] drm/msm/a6xx: Use descriptive bitfield names for
 CP_PROTECT_CNTL

We have the necessary information, so explain which bit does what.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index b3ada1e7b598..cd0c9bccdc19 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -930,7 +930,10 @@ static void a6xx_set_cp_protect(struct msm_gpu *gpu)
 	 * protect violation and select the last span to protect from the start
 	 * address all the way to the end of the register address space
 	 */
-	gpu_write(gpu, REG_A6XX_CP_PROTECT_CNTL, BIT(0) | BIT(1) | BIT(3));
+	gpu_write(gpu, REG_A6XX_CP_PROTECT_CNTL,
+		  A6XX_CP_PROTECT_CNTL_ACCESS_PROT_EN |
+		  A6XX_CP_PROTECT_CNTL_ACCESS_FAULT_ON_VIOL_EN |
+		  A6XX_CP_PROTECT_CNTL_LAST_SPAN_INF_RANGE);
 
 	for (i = 0; i < count - 1; i++)
 		gpu_write(gpu, REG_A6XX_CP_PROTECT(i), regs[i]);

-- 
2.41.0