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Message-ID: <CADnq5_MV+hVLRcMLrN4TE1xX1Q5dfMzi7+aWwZFcenF1uk+9iQ@mail.gmail.com>
Date:   Tue, 29 Aug 2023 10:09:26 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     Hamza Mahfooz <hamza.mahfooz@....com>
Cc:     amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        Leo Li <sunpeng.li@....com>,
        Qingqing Zhuo <Qingqing.Zhuo@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        linux-kernel@...r.kernel.org,
        Joaquín Ignacio Aramendía 
        <samsagax@...il.com>, David Tadokoro <davidbtadokoro@....br>,
        Bhawanpreet Lakha <Bhawanpreet.Lakha@....com>,
        Nicholas Choi <Nicholas.Choi@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        Joshua Ashton <joshua@...ggi.es>
Subject: Re: [PATCH] Revert "Revert "drm/amd/display: Implement zpos property""

On Tue, Aug 29, 2023 at 7:40 AM Hamza Mahfooz <hamza.mahfooz@....com> wrote:
>
> This reverts commit 984612bd4649c91f12e9c7c7f9e914fdc8ba7d3f.
>
> The problematic IGT test case (i.e. kms_atomic@...ne-immutable-zpos) has
> been fixed as of commit cb77add45011 ("tests/kms_atomic: remove zpos <
> N-planes assert") to the IGT repo. So, reintroduce the reverted code.
>
> Link: https://gitlab.freedesktop.org/drm/igt-gpu-tools/-/commit/cb77add45011b129e21f3cb2a4089a73dde56179
> Signed-off-by: Hamza Mahfooz <hamza.mahfooz@....com>

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

> ---
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> index 894bc7e4fdaa..df568a7cd005 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> @@ -1469,6 +1469,15 @@ int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
>                 drm_plane_create_blend_mode_property(plane, blend_caps);
>         }
>
> +       if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
> +               drm_plane_create_zpos_immutable_property(plane, 0);
> +       } else if (plane->type == DRM_PLANE_TYPE_OVERLAY) {
> +               unsigned int zpos = 1 + drm_plane_index(plane);
> +               drm_plane_create_zpos_property(plane, zpos, 1, 254);
> +       } else if (plane->type == DRM_PLANE_TYPE_CURSOR) {
> +               drm_plane_create_zpos_immutable_property(plane, 255);
> +       }
> +
>         if (plane->type == DRM_PLANE_TYPE_PRIMARY &&
>             plane_cap &&
>             (plane_cap->pixel_format_support.nv12 ||
> --
> 2.41.0
>

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