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drm/amdgpu: add helpers for baco entry and exit

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BACO - Bus Active, Chip Off

Will be used for runtime pm.  Entry will enter the BACO
state (chip off).  Exit will exit the BACO state (chip on).

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2019-10-04 12:33:09 -05:00
parent 11520f2708
commit 361dbd01a1
2 changed files with 63 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -1144,6 +1144,8 @@ bool amdgpu_device_supports_boco(struct drm_device *dev);
bool amdgpu_device_supports_baco(struct drm_device *dev);
bool amdgpu_device_is_peer_accessible(struct amdgpu_device *adev,
struct amdgpu_device *peer_adev);
int amdgpu_device_baco_enter(struct drm_device *dev);
int amdgpu_device_baco_exit(struct drm_device *dev);
/* atpx handler */
#if defined(CONFIG_VGA_SWITCHEROO)