[PATCH] drm/amd/pm: skip gfx cgpg in the s0ix suspend-resume

[Deucher, Alexander]

[Public]

Acked-by: Alex Deucher <alexander.deucher at amd.com>
________________________________
From: Liang, Prike <Prike.Liang at amd.com>
Sent: Wednesday, December 8, 2021 8:51 PM
To: amd-gfx at lists.freedesktop.org <amd-gfx at lists.freedesktop.org>
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>; Huang, Ray <Ray.Huang at amd.com>; Limonciello, Mario <Mario.Limonciello at amd.com>; Liang, Prike <Prike.Liang at amd.com>
Subject: [PATCH] drm/amd/pm: skip gfx cgpg in the s0ix suspend-resume

In the s0ix entry need retain gfx in the gfxoff state,we don't
disable gfx cgpg in the suspend so there is also needn't enable
gfx cgpg in the s0ix resume.

Signed-off-by: Prike Liang <Prike.Liang at amd.com>
---
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index 5839918..185269f 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -1607,7 +1607,8 @@ static int smu_resume(void *handle)
                 return ret;
         }

-       if (smu->is_apu)
+       /* skip gfx cgpg in the s0ix suspend-resume case*/
+       if (smu->is_apu && !adev->in_s0ix)
                 smu_set_gfx_cgpg(&adev->smu, true);

         smu->disable_uclk_switch = 0;
--
2.7.4

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