Re: [PATCH 3/3] Revert "drm/amd/amdgpu: switch on/off vcn power profile mode"

[Alex Deucher]

KFD also changes the profile when queues are active.  Please make sure
that is properly taken into account as well.

Alex

On Mon, Aug 14, 2023 at 3:36 AM Arvind Yadav <Arvind.Yadav@xxxxxxx> wrote:
>
> This reverts commit 5ce71f59bb9bd3d8a09b96afdbc92975cb6dc303.
>
> Reason for revert: New amdgpu_smu* api is added to switch
> on/off profile mode. These new api will allow to change the
> GPU power profile based on a submitted job.
>
> Cc: Shashank Sharma <shashank.sharma@xxxxxxx>
> Cc: Christian Koenig <christian.koenig@xxxxxxx>
> Cc: Alex Deucher <alexander.deucher@xxxxxxx>
> Signed-off-by: Arvind Yadav <Arvind.Yadav@xxxxxxx>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 14 ++------------
>  1 file changed, 2 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> index 2d94f1b63bd6..70777fcfa626 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> @@ -363,7 +363,6 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
>                 container_of(work, struct amdgpu_device, vcn.idle_work.work);
>         unsigned int fences = 0, fence[AMDGPU_MAX_VCN_INSTANCES] = {0};
>         unsigned int i, j;
> -       int r = 0;
>
>         for (j = 0; j < adev->vcn.num_vcn_inst; ++j) {
>                 if (adev->vcn.harvest_config & (1 << j))
> @@ -392,10 +391,6 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
>         if (!fences && !atomic_read(&adev->vcn.total_submission_cnt)) {
>                 amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCN,
>                        AMD_PG_STATE_GATE);
> -               r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
> -                               false);
> -               if (r)
> -                       dev_warn(adev->dev, "(%d) failed to disable video power profile mode\n", r);
>         } else {
>                 schedule_delayed_work(&adev->vcn.idle_work, VCN_IDLE_TIMEOUT);
>         }
> @@ -404,16 +399,11 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
>  void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
>  {
>         struct amdgpu_device *adev = ring->adev;
> -       int r = 0;
>
>         atomic_inc(&adev->vcn.total_submission_cnt);
>
> -       if (!cancel_delayed_work_sync(&adev->vcn.idle_work)) {
> -               r = amdgpu_dpm_switch_power_profile(adev, PP_SMC_POWER_PROFILE_VIDEO,
> -                               true);
> -               if (r)
> -                       dev_warn(adev->dev, "(%d) failed to switch to video power profile mode\n", r);
> -       }
> +       if (!cancel_delayed_work_sync(&adev->vcn.idle_work))
> +               amdgpu_gfx_off_ctrl(adev, false);
>
>         mutex_lock(&adev->vcn.vcn_pg_lock);
>         amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCN,
> --
> 2.34.1
>