[PATCH] drm/amd/powerplay: Disable gfx CGPG when suspend smu

[Huang, Ray]

Why do you disable CGPG for all APU?

Thanks,
Ray

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of chen gong
Sent: Friday, October 25, 2019 7:07 PM
To: amd-gfx at lists.freedesktop.org
Cc: Gong, Curry <Curry.Gong at amd.com>
Subject: [PATCH] drm/amd/powerplay: Disable gfx CGPG when suspend smu

if no disable gfx CGPG when suspend smu, enabling gfx CGPG will fail when resume smu.

Platform: Renoir
dmesg log information:

[  151.844110 ] amdgpu: [powerplay] SMU is resuming...
[  151.844116 ] amdgpu: [powerplay] dpm has been disabled [  151.844604 ] amdgpu: [powerplay] Failed to send message 0x2f,response 0xfffffffb param 0x1 [  151.844605 ] amdgpu: [powerplay] SMU is resumed successfully!

Signed-off-by: chen gong <curry.gong at amd.com>
---
 drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 26923aa..4e468b0 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -1351,6 +1351,8 @@ static int smu_suspend(void *handle)
 	if (adev->asic_type >= CHIP_NAVI10 &&
 	    adev->gfx.rlc.funcs->stop)
 		adev->gfx.rlc.funcs->stop(adev);
+	if (smu->is_apu)
+		smu_set_gfx_cgpg(&adev->smu, false);
 
 	return 0;
 }
--
2.7.4

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