[PATCH v3 4/4] drm: rcar: use generic code for managing zpos plane property

[Benjamin Gaignard <benjamin.gaignard@linaro.org>]

This patch replaces zpos property handling custom code in rcar DRM
driver with calls to generic DRM code.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>

Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
---
 drivers/gpu/drm/rcar-du/rcar_du_crtc.c  | 2 +-
 drivers/gpu/drm/rcar-du/rcar_du_drv.h   | 1 -
 drivers/gpu/drm/rcar-du/rcar_du_kms.c   | 5 -----
 drivers/gpu/drm/rcar-du/rcar_du_plane.c | 9 ++-------
 drivers/gpu/drm/rcar-du/rcar_du_plane.h | 2 --
 5 files changed, 3 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 0d8bdda..28d2cb6 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -196,7 +196,7 @@ void rcar_du_crtc_route_output(struct drm_crtc *crtc,
 
 static unsigned int plane_zpos(struct rcar_du_plane *plane)
 {
-	return to_rcar_plane_state(plane->plane.state)->zpos;
+	return plane->plane.state->normalized_zpos;
 }
 
 static const struct rcar_du_format_info *
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index ed35467..c843c31 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -92,7 +92,6 @@ struct rcar_du_device {
 	struct {
 		struct drm_property *alpha;
 		struct drm_property *colorkey;
-		struct drm_property *zpos;
 	} props;
 
 	unsigned int dpad0_source;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index e70a4f3..4ace0aa 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -527,11 +527,6 @@ static int rcar_du_properties_init(struct rcar_du_device *rcdu)
 	if (rcdu->props.colorkey == NULL)
 		return -ENOMEM;
 
-	rcdu->props.zpos =
-		drm_property_create_range(rcdu->ddev, 0, "zpos", 1, 7);
-	if (rcdu->props.zpos == NULL)
-		return -ENOMEM;
-
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
index 8460ae1..4764afc 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
@@ -656,7 +656,7 @@ static void rcar_du_plane_reset(struct drm_plane *plane)
 	state->source = RCAR_DU_PLANE_MEMORY;
 	state->alpha = 255;
 	state->colorkey = RCAR_DU_COLORKEY_NONE;
-	state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
+	plane->state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
 
 	plane->state = &state->state;
 	plane->state->plane = plane;
@@ -674,8 +674,6 @@ static int rcar_du_plane_atomic_set_property(struct drm_plane *plane,
 		rstate->alpha = val;
 	else if (property == rcdu->props.colorkey)
 		rstate->colorkey = val;
-	else if (property == rcdu->props.zpos)
-		rstate->zpos = val;
 	else
 		return -EINVAL;
 
@@ -694,8 +692,6 @@ static int rcar_du_plane_atomic_get_property(struct drm_plane *plane,
 		*val = rstate->alpha;
 	else if (property == rcdu->props.colorkey)
 		*val = rstate->colorkey;
-	else if (property == rcdu->props.zpos)
-		*val = rstate->zpos;
 	else
 		return -EINVAL;
 
@@ -767,8 +763,7 @@ int rcar_du_planes_init(struct rcar_du_group *rgrp)
 		drm_object_attach_property(&plane->plane.base,
 					   rcdu->props.colorkey,
 					   RCAR_DU_COLORKEY_NONE);
-		drm_object_attach_property(&plane->plane.base,
-					   rcdu->props.zpos, 1);
+		drm_plane_create_zpos_property(&plane->plane, 1, 7);
 	}
 
 	return 0;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.h b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
index b18b7b2..8b91dd3 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
@@ -51,7 +51,6 @@ static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
  * @hwindex: 0-based hardware plane index, -1 means unused
  * @alpha: value of the plane alpha property
  * @colorkey: value of the plane colorkey property
- * @zpos: value of the plane zpos property
  */
 struct rcar_du_plane_state {
 	struct drm_plane_state state;
@@ -62,7 +61,6 @@ struct rcar_du_plane_state {
 
 	unsigned int alpha;
 	unsigned int colorkey;
-	unsigned int zpos;
 };
 
 static inline struct rcar_du_plane_state *
-- 
1.9.1

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