[PATCH] drm/amd/display: Fix set scaling doesn's work

[Rodrigo Siqueira Jordao]

On 11/22/22 06:20, hongao wrote:
> [Why]
> Setting scaling does not correctly update CRTC state. As a result
> dc stream state's src (composition area) && dest (addressable area)
> was not calculated as expected. This causes set scaling doesn's work.
> 
> [How]
> Correctly update CRTC state when setting scaling property.
> 
> Signed-off-by: hongao <hongao at uniontech.com>
> 
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index 3e1ecca72430..a88a6f758748 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -9386,8 +9386,8 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
>   			goto fail;
>   		}
>   
> -		if (dm_old_con_state->abm_level !=
> -		    dm_new_con_state->abm_level)
> +		if (dm_old_con_state->abm_level != dm_new_con_state->abm_level ||
> +		    dm_old_con_state->scaling != dm_new_con_state->scaling)
>   			new_crtc_state->connectors_changed = true;
>   	}
>   

Hi,

This change lgtm, and I also run it in our CI, and from IGT perspective, 
we are good.

Harry, do you have any comment about this change?

Thanks
Siqueira