diff options
| author | Rex Zhu <Rex.Zhu@amd.com> | 2018-07-19 19:48:36 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-08-27 19:09:42 +0300 |
| commit | be2d6aa51e66625f93d3ba1eb817cd33d8136c60 (patch) | |
| tree | 58e889b6e51dfbeda6d2da62ada972b0eb2f5587 /drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | |
| parent | 982976d92f17aa8ff5d7a4d09fab4608795d12f3 (diff) | |
| download | linux-be2d6aa51e66625f93d3ba1eb817cd33d8136c60.tar.xz | |
drm/amdgpu: Power down acp if board uses AZ (v2)
if board uses AZ rather than ACP, we power down acp
through smu to save power.
v2: handle S3/S4 and hw_fini (Alex)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c index 71efcf38f11b..d4d1738da3b6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c @@ -289,10 +289,12 @@ static int acp_hw_init(void *handle) r = amd_acp_hw_init(adev->acp.cgs_device, ip_block->version->major, ip_block->version->minor); /* -ENODEV means board uses AZ rather than ACP */ - if (r == -ENODEV) + if (r == -ENODEV) { + amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, true); return 0; - else if (r) + } else if (r) { return r; + } if (adev->rmmio_size == 0 || adev->rmmio_size < 0x5289) return -EINVAL; @@ -497,8 +499,10 @@ static int acp_hw_fini(void *handle) struct amdgpu_device *adev = (struct amdgpu_device *)handle; /* return early if no ACP */ - if (!adev->acp.acp_cell) + if (!adev->acp.acp_cell) { + amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, false); return 0; + } /* Assert Soft reset of ACP */ val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET); @@ -556,11 +560,21 @@ static int acp_hw_fini(void *handle) static int acp_suspend(void *handle) { + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + /* power up on suspend */ + if (!adev->acp.acp_cell) + amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, false); return 0; } static int acp_resume(void *handle) { + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + /* power down again on resume */ + if (!adev->acp.acp_cell) + amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, true); return 0; } |