[PATCH] drm/amdgpu: add powerplay support for CI asics

[Deucher, Alexander]

> -----Original Message-----
> From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf
> Of Rex Zhu
> Sent: Friday, September 15, 2017 2:29 AM
> To: amd-gfx at lists.freedesktop.org
> Cc: Zhu, Rex
> Subject: [PATCH] drm/amdgpu: add powerplay support for CI asics
> 
> currently, for CI asics,
> use dpm by default, amdgpu.dpm=-1.
> when set amdgpu.dpm=1, enable powplay.
> when set amdgpu.dpm=0, disable both dpm and powerplay.
> 
> when powerplay is stable on CI asics, ci_dpm will
> be removed.
> 
> Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>

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

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_powerplay.c | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_powerplay.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_powerplay.c
> index 5cd5b8e..2d2f0960 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_powerplay.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_powerplay.c
> @@ -93,8 +93,16 @@ static int amdgpu_pp_early_init(void *handle)
>  #ifdef CONFIG_DRM_AMDGPU_CIK
>  	case CHIP_BONAIRE:
>  	case CHIP_HAWAII:
> -		amd_pp->ip_funcs = &ci_dpm_ip_funcs;
> -		amd_pp->pp_funcs = &ci_dpm_funcs;
> +		if (amdgpu_dpm == -1) {
> +			amd_pp->ip_funcs = &ci_dpm_ip_funcs;
> +			amd_pp->pp_funcs = &ci_dpm_funcs;
> +		} else {
> +			adev->pp_enabled = true;
> +			if (amdgpu_create_pp_handle(adev))
> +				return -EINVAL;
> +			amd_pp->ip_funcs = &pp_ip_funcs;
> +			amd_pp->pp_funcs = &pp_dpm_funcs;
> +		}
>  		break;
>  	case CHIP_KABINI:
>  	case CHIP_MULLINS:
> --
> 1.9.1
> 
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