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From: Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: "Jon Hunter" <jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
	"Ville Syrjälä"
	<ville.syrjala-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
	"Dmitry Osipenko"
	<digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	"Daniel Stone" <daniel-rLtY4a/8tF1rovVCs/uTlw@public.gmane.org>,
	dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
	linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH v2] drm/tegra: Add zpos property for cursor planes
Date: Tue, 16 Jun 2020 14:17:13 +0200	[thread overview]
Message-ID: <20200616121713.2983627-1-thierry.reding@gmail.com> (raw)

From: Thierry Reding <treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

As of commit 4dc55525b095 ("drm: plane: Verify that no or all planes
have a zpos property") a warning is emitted if there's a mix of planes
with and without a zpos property.

On Tegra, cursor planes are always composited on top of all other
planes, which is why they never had a zpos property attached to them.
However, since the composition order is fixed, this is trivial to
remedy by simply attaching an immutable zpos property to them.

Changes in v2:
- hardcode cursor plane zpos to 255 instead of 0 (Ville)

Reported-by: Jonathan Hunter <jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Signed-off-by: Thierry Reding <treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
 drivers/gpu/drm/tegra/dc.c  | 9 +++++++--
 drivers/gpu/drm/tegra/hub.c | 2 +-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 83f31c6e891c..85408eed4685 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -787,7 +787,7 @@ static struct drm_plane *tegra_primary_plane_create(struct drm_device *drm,
 	}
 
 	drm_plane_helper_add(&plane->base, &tegra_plane_helper_funcs);
-	drm_plane_create_zpos_property(&plane->base, plane->index, 0, 255);
+	drm_plane_create_zpos_property(&plane->base, plane->index, 0, 254);
 
 	err = drm_plane_create_rotation_property(&plane->base,
 						 DRM_MODE_ROTATE_0,
@@ -957,6 +957,7 @@ static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm,
 	}
 
 	drm_plane_helper_add(&plane->base, &tegra_cursor_plane_helper_funcs);
+	drm_plane_create_zpos_immutable_property(&plane->base, 255);
 
 	return &plane->base;
 }
@@ -1074,7 +1075,11 @@ static struct drm_plane *tegra_dc_overlay_plane_create(struct drm_device *drm,
 	}
 
 	drm_plane_helper_add(&plane->base, &tegra_plane_helper_funcs);
-	drm_plane_create_zpos_property(&plane->base, plane->index, 0, 255);
+
+	if (!cursor)
+		drm_plane_create_zpos_property(&plane->base, plane->index, 0, 254);
+	else
+		drm_plane_create_zpos_immutable_property(&plane->base, 255);
 
 	err = drm_plane_create_rotation_property(&plane->base,
 						 DRM_MODE_ROTATE_0,
diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c
index 22a03f7ffdc1..f8afc05bceb3 100644
--- a/drivers/gpu/drm/tegra/hub.c
+++ b/drivers/gpu/drm/tegra/hub.c
@@ -590,7 +590,7 @@ struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
 	}
 
 	drm_plane_helper_add(p, &tegra_shared_plane_helper_funcs);
-	drm_plane_create_zpos_property(p, 0, 0, 255);
+	drm_plane_create_zpos_property(p, index, 0, 254);
 
 	return p;
 }
-- 
2.24.1

WARNING: multiple messages have this Message-ID (diff)
From: Thierry Reding <thierry.reding@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: dri-devel@lists.freedesktop.org,
	Jon Hunter <jonathanh@nvidia.com>,
	linux-tegra@vger.kernel.org, Dmitry Osipenko <digetx@gmail.com>
Subject: [PATCH v2] drm/tegra: Add zpos property for cursor planes
Date: Tue, 16 Jun 2020 14:17:13 +0200	[thread overview]
Message-ID: <20200616121713.2983627-1-thierry.reding@gmail.com> (raw)

From: Thierry Reding <treding@nvidia.com>

As of commit 4dc55525b095 ("drm: plane: Verify that no or all planes
have a zpos property") a warning is emitted if there's a mix of planes
with and without a zpos property.

On Tegra, cursor planes are always composited on top of all other
planes, which is why they never had a zpos property attached to them.
However, since the composition order is fixed, this is trivial to
remedy by simply attaching an immutable zpos property to them.

Changes in v2:
- hardcode cursor plane zpos to 255 instead of 0 (Ville)

Reported-by: Jonathan Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/drm/tegra/dc.c  | 9 +++++++--
 drivers/gpu/drm/tegra/hub.c | 2 +-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 83f31c6e891c..85408eed4685 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -787,7 +787,7 @@ static struct drm_plane *tegra_primary_plane_create(struct drm_device *drm,
 	}
 
 	drm_plane_helper_add(&plane->base, &tegra_plane_helper_funcs);
-	drm_plane_create_zpos_property(&plane->base, plane->index, 0, 255);
+	drm_plane_create_zpos_property(&plane->base, plane->index, 0, 254);
 
 	err = drm_plane_create_rotation_property(&plane->base,
 						 DRM_MODE_ROTATE_0,
@@ -957,6 +957,7 @@ static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm,
 	}
 
 	drm_plane_helper_add(&plane->base, &tegra_cursor_plane_helper_funcs);
+	drm_plane_create_zpos_immutable_property(&plane->base, 255);
 
 	return &plane->base;
 }
@@ -1074,7 +1075,11 @@ static struct drm_plane *tegra_dc_overlay_plane_create(struct drm_device *drm,
 	}
 
 	drm_plane_helper_add(&plane->base, &tegra_plane_helper_funcs);
-	drm_plane_create_zpos_property(&plane->base, plane->index, 0, 255);
+
+	if (!cursor)
+		drm_plane_create_zpos_property(&plane->base, plane->index, 0, 254);
+	else
+		drm_plane_create_zpos_immutable_property(&plane->base, 255);
 
 	err = drm_plane_create_rotation_property(&plane->base,
 						 DRM_MODE_ROTATE_0,
diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c
index 22a03f7ffdc1..f8afc05bceb3 100644
--- a/drivers/gpu/drm/tegra/hub.c
+++ b/drivers/gpu/drm/tegra/hub.c
@@ -590,7 +590,7 @@ struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
 	}
 
 	drm_plane_helper_add(p, &tegra_shared_plane_helper_funcs);
-	drm_plane_create_zpos_property(p, 0, 0, 255);
+	drm_plane_create_zpos_property(p, index, 0, 254);
 
 	return p;
 }
-- 
2.24.1

_______________________________________________
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dri-devel@lists.freedesktop.org
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             reply	other threads:[~2020-06-16 12:17 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-16 12:17 Thierry Reding [this message]
2020-06-16 12:17 ` [PATCH v2] drm/tegra: Add zpos property for cursor planes Thierry Reding
     [not found] ` <20200616121713.2983627-1-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-16 15:54   ` Dmitry Osipenko
2020-06-16 15:54     ` Dmitry Osipenko
     [not found]     ` <c34c97ab-08de-341e-05e5-77e2651d956f-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2020-06-16 16:13       ` Thierry Reding
2020-06-16 16:13         ` Thierry Reding
2020-06-16 16:38         ` Dmitry Osipenko
2020-06-16 16:38           ` Dmitry Osipenko

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