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Message-ID: <20230829113931.54391-1-hamza.mahfooz@amd.com>
Date:   Tue, 29 Aug 2023 07:39:30 -0400
From:   Hamza Mahfooz <hamza.mahfooz@....com>
To:     <amd-gfx@...ts.freedesktop.org>
CC:     Hamza Mahfooz <hamza.mahfooz@....com>,
        Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Qingqing Zhuo <Qingqing.Zhuo@....com>,
        Bas Nieuwenhuizen <bas@...nieuwenhuizen.nl>,
        Joaquín Ignacio Aramendía 
        <samsagax@...il.com>, Joshua Ashton <joshua@...ggi.es>,
        Nicholas Choi <Nicholas.Choi@....com>,
        David Tadokoro <davidbtadokoro@....br>,
        Bhawanpreet Lakha <Bhawanpreet.Lakha@....com>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] Revert "Revert "drm/amd/display: Implement zpos property""

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>
---
 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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