On Wed, May 16, 2018 at 8:53 AM, Rex Zhu <rex....@amd.com> wrote:
> Signed-off-by: Rex Zhu <rex....@amd.com>
Please add a better patch description. E.g.,
drm/amdgpu: Add runtime vcn cg/pg enablement
Enable support for dynamically powering up/down VCN on demand.
Signed-off-by: Rex Zhu <rex....@amd.com>
With that fixed:
Reviewed-by: Alex Deucher <alexander.deuc...@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 19 ++++++++++++++-----
> 1 file changed, 14 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> index 58e4953..8b0d491 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> @@ -208,9 +208,13 @@ static void amdgpu_vcn_idle_work_handler(struct
> work_struct *work)
>
> if (fences == 0) {
> if (adev->pm.dpm_enabled) {
> - /* might be used when with pg/cg
> amdgpu_dpm_enable_uvd(adev, false);
> - */
> + } else {
> + /* shutdown the UVD block */
> + amdgpu_device_ip_set_powergating_state(adev,
> AMD_IP_BLOCK_TYPE_VCN,
> +
> AMD_PG_STATE_GATE);
> + amdgpu_device_ip_set_clockgating_state(adev,
> AMD_IP_BLOCK_TYPE_VCN,
> +
> AMD_CG_STATE_GATE);
> }
> } else {
> schedule_delayed_work(&adev->vcn.idle_work, VCN_IDLE_TIMEOUT);
> @@ -223,9 +227,14 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
> bool set_clocks = !cancel_delayed_work_sync(&adev->vcn.idle_work);
>
> if (set_clocks && adev->pm.dpm_enabled) {
> - /* might be used when with pg/cg
> - amdgpu_dpm_enable_uvd(adev, true);
> - */
> + if (adev->pm.dpm_enabled) {
> + amdgpu_dpm_enable_uvd(adev, true);
> + } else {
> + amdgpu_device_ip_set_clockgating_state(adev,
> AMD_IP_BLOCK_TYPE_VCN,
> +
> AMD_CG_STATE_UNGATE);
> + amdgpu_device_ip_set_powergating_state(adev,
> AMD_IP_BLOCK_TYPE_VCN,
> +
> AMD_PG_STATE_UNGATE);
> + }
> }
> }
>
> --
> 1.9.1
>
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