diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2021-03-16 14:00:36 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-09 16:37:00 -0400 |
| commit | 32ff160da7ffc707e3bccfe1fdd3711ac2246164 (patch) | |
| tree | 33935732605a6b74ec8854ffe4e0d20b866beea2 /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | |
| parent | f937008757a2048e1b22bb067e5fe36b1f4fb1af (diff) | |
drm/amdgpu: update comments about s0ix suspend/resume
Provide and explanation as to why we skip GFX and PSP for
S0ix. GFX goes into gfxoff, same as runtime, so no need
to tear down and re-init. PSP is part of the always on
state, so no need to touch it.
Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 5ec9b8793ae5..579633134f7a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2754,10 +2754,14 @@ static int amdgpu_device_ip_suspend_phase2(struct amdgpu_device *adev) continue; } - /* XXX fix these remaining cases */ + /* skip suspend of gfx and psp for S0ix + * gfx is in gfxoff state, so on resume it will exit gfxoff just + * like at runtime. PSP is also part of the always on hardware + * so no need to suspend it. + */ if (adev->in_s0ix && - (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP || /* breaks resume */ - adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GFX)) /* breaks suspend */ + (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GFX)) continue; /* XXX handle errors */ |