From 19c17841e3b62f45b01ae33db43de1a24e186adb Mon Sep 17 00:00:00 2001 From: Akhil P Oommen Date: Sat, 19 Apr 2025 20:21:33 +0530 Subject: [PATCH] drm/msm/adreno: Add module param to disable ACD Add a module param to disable ACD which will help to quickly rule it out for any GPU issues. Signed-off-by: Akhil P Oommen Tested-by: Maya Matuszczyk Tested-by: Anthony Ruhier Reviewed-by: Konrad Dybcio Patchwork: https://patchwork.freedesktop.org/patch/649349/ Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 7 +++++++ drivers/gpu/drm/msm/adreno/adreno_device.c | 4 ++++ 2 files changed, 11 insertions(+) diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c index 48b4ca8894ba..38c0f8ef85c3 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c @@ -1670,6 +1670,13 @@ static int a6xx_gmu_acd_probe(struct a6xx_gmu *gmu) struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; struct msm_gpu *gpu = &adreno_gpu->base; int ret, i, cmd_idx = 0; + extern bool disable_acd; + + /* Skip ACD probe if requested via module param */ + if (disable_acd) { + DRM_DEV_ERROR(gmu->dev, "Skipping GPU ACD probe\n"); + return 0; + } cmd->version = 1; cmd->stride = 1; diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c index 236b25c094cd..f5e1490d07c1 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_device.c +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c @@ -24,6 +24,10 @@ int enable_preemption = -1; MODULE_PARM_DESC(enable_preemption, "Enable preemption (A7xx only) (1=on , 0=disable, -1=auto (default))"); module_param(enable_preemption, int, 0600); +bool disable_acd; +MODULE_PARM_DESC(disable_acd, "Forcefully disable GPU ACD"); +module_param_unsafe(disable_acd, bool, 0400); + extern const struct adreno_gpulist a2xx_gpulist; extern const struct adreno_gpulist a3xx_gpulist; extern const struct adreno_gpulist a4xx_gpulist; -- 2.20.1