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

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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@xxxxxxxxxxxxx>

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



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