linux-kernel - [PATCH v3 1/7] drm/msm: adreno: add defines for gpu & gmu frequency table sizes

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Message-Id: <20241128-topic-sm8x50-gpu-bw-vote-v3-1-81d60c10fb73@linaro.org>
Date: Thu, 28 Nov 2024 11:25:41 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>, 
 Konrad Dybcio <konradybcio@...nel.org>, 
 Abhinav Kumar <quic_abhinavk@...cinc.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, 
 Marijn Suijten <marijn.suijten@...ainline.org>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Akhil P Oommen <quic_akhilpo@...cinc.com>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 devicetree@...r.kernel.org, Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH v3 1/7] drm/msm: adreno: add defines for gpu & gmu
 frequency table sizes

Even if the code uses ARRAY_SIZE() to fill those tables,
it's still a best practice to not use magic values for
tables in structs.

Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.h | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
index b4a79f88ccf45cfe651c86d2a9da39541c5772b3..88f18ea6a38a08b5b171709e5020010947a5d347 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
@@ -19,6 +19,9 @@ struct a6xx_gmu_bo {
 	u64 iova;
 };
 
+#define GMU_MAX_GX_FREQS	16
+#define GMU_MAX_CX_FREQS	4
+
 /*
  * These define the different GMU wake up options - these define how both the
  * CPU and the GMU bring up the hardware
@@ -79,12 +82,12 @@ struct a6xx_gmu {
 	int current_perf_index;
 
 	int nr_gpu_freqs;
-	unsigned long gpu_freqs[16];
-	u32 gx_arc_votes[16];
+	unsigned long gpu_freqs[GMU_MAX_GX_FREQS];
+	u32 gx_arc_votes[GMU_MAX_GX_FREQS];
 
 	int nr_gmu_freqs;
-	unsigned long gmu_freqs[4];
-	u32 cx_arc_votes[4];
+	unsigned long gmu_freqs[GMU_MAX_CX_FREQS];
+	u32 cx_arc_votes[GMU_MAX_CX_FREQS];
 
 	unsigned long freq;
 

-- 
2.34.1