From: Rex Zhu <[email protected]> if board uses AZ rather than ACP, we power down acp through smu to save power.
v2: handle S3/S4 and hw_fini (Alex) Signed-off-by: Rex Zhu <[email protected]> Signed-off-by: Alex Deucher <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 20 +++++++++++++++++--- 1 file 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 71efcf3..d4d1738 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; } -- 1.9.1 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
