[PATCH] drm/amdgpu: enable hibernate support on Navi1X

[Alex Deucher]

On Thu, May 7, 2020 at 6:26 AM Evan Quan <evan.quan at amd.com> wrote:
>
> BACO is needed to support hibernate on Navi1X.
>
> Change-Id: Ia283612919e9a5b4e1e198ab2cc0bc15f7f94760
> Signed-off-by: Evan Quan <evan.quan at amd.com>

Acked-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu.h        | 1 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c    | 2 ++
>  drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 2 +-
>  3 files changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 5bd213f88ae5..e649a3d3fd7c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -1010,6 +1010,7 @@ struct amdgpu_device {
>
>         /* s3/s4 mask */
>         bool                            in_suspend;
> +       bool                            in_hibernate;
>
>         bool                            in_gpu_reset;
>         enum pp_mp1_state               mp1_state;
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> index eb351844e46c..5eaa5ea83d0c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> @@ -1260,7 +1260,9 @@ static int amdgpu_pmops_freeze(struct device *dev)
>         struct amdgpu_device *adev = drm_dev->dev_private;
>         int r;
>
> +       adev->in_hibernate = true;
>         r = amdgpu_device_suspend(drm_dev, true);
> +       adev->in_hibernate = false;
>         if (r)
>                 return r;
>         return amdgpu_asic_reset(adev);
> diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
> index 8a0c37dc5182..f1621147db61 100644
> --- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
> +++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
> @@ -1500,7 +1500,7 @@ static int smu_disable_dpm(struct smu_context *smu)
>         bool use_baco = !smu->is_apu &&
>                 ((adev->in_gpu_reset &&
>                   (amdgpu_asic_reset_method(adev) == AMD_RESET_METHOD_BACO)) ||
> -                (adev->in_runpm && amdgpu_asic_supports_baco(adev)));
> +                ((adev->in_runpm || adev->in_hibernate) && amdgpu_asic_supports_baco(adev)));
>
>         ret = smu_get_smc_version(smu, NULL, &smu_version);
>         if (ret) {
> --
> 2.26.2
>
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