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drm/amdgpu: add a amdgpu_device_supports_baco helper

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BACO - Bus Active, Chip Off

To check if a device supports BACO or not.  This will be
used in determining when to enable runtime pm.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2019-10-28 14:47:38 -04:00
parent ac7426169e
commit a69cba42b1
2 changed files with 16 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View file

@ -1141,6 +1141,7 @@ void amdgpu_device_program_register_sequence(struct amdgpu_device *adev,
const u32 array_size);
bool amdgpu_device_is_px(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);

15
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View file

@ -153,6 +153,21 @@ bool amdgpu_device_is_px(struct drm_device *dev)
return false;
}
/**
* amdgpu_device_supports_baco - Does the device support BACO
*
* @dev: drm_device pointer
*
* Returns true if the device supporte BACO,
* otherwise return false.
*/
bool amdgpu_device_supports_baco(struct drm_device *dev)
{
struct amdgpu_device *adev = dev->dev_private;
return amdgpu_asic_supports_baco(adev);
}
/**
* VRAM access helper functions.
*