From: Tim Huang <Tim.Huang@amd.com>
Date: Thu, 19 Oct 2023 02:24:11 +0000 (+0800)
Subject: drm/amd/pm: not stop rlc for IMU enabled APUs when suspend
X-Git-Tag: v6.7-rc1~8^2^2~32
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d78fa1c309327cee1cfb7c608ec59f5a60ab94bd;p=thirdparty%2Fkernel%2Flinux.git

drm/amd/pm: not stop rlc for IMU enabled APUs when suspend

For IMU enabled APUs, after sending the PrepareMp1ForUnload message
to SMU in system_features_control, the RLC registers can't be touched.
The driver to stop the rlc in suspending is no longer required.

Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index d86750df59405..1ead323f1c781 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -1711,6 +1711,7 @@ static int smu_disable_dpms(struct smu_context *smu)
 	}
 
 	if (amdgpu_ip_version(adev, GC_HWIP, 0) >= IP_VERSION(9, 4, 2) &&
+	    !((adev->flags & AMD_IS_APU) && adev->gfx.imu.funcs) &&
 	    !amdgpu_sriov_vf(adev) && adev->gfx.rlc.funcs->stop)
 		adev->gfx.rlc.funcs->stop(adev);