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

Signed-off-by: Marek Szyprowski <m.szyprowski at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_drv.h   |  2 -
 drivers/gpu/drm/exynos/exynos_drm_plane.c | 68 ++++++++-----------------------
 drivers/gpu/drm/exynos/exynos_mixer.c     |  6 ++-
 3 files changed, 20 insertions(+), 56 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h 
b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 17b5ded72ff1..816537886e4e 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -64,7 +64,6 @@ struct exynos_drm_plane_state {
        struct exynos_drm_rect src;
        unsigned int h_ratio;
        unsigned int v_ratio;
-       unsigned int zpos;
 };

 static inline struct exynos_drm_plane_state *
@@ -217,7 +216,6 @@ struct exynos_drm_private {
         * this array is used to be aware of which crtc did it request vblank.
         */
        struct drm_crtc *crtc[MAX_CRTC];
-       struct drm_property *plane_zpos_property;

        unsigned long da_start;
        unsigned long da_space_size;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c 
b/drivers/gpu/drm/exynos/exynos_drm_plane.c
index d86227236f55..3a486939168e 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c
@@ -137,9 +137,9 @@ static void exynos_drm_plane_reset(struct drm_plane *plane)

        exynos_state = kzalloc(sizeof(*exynos_state), GFP_KERNEL);
        if (exynos_state) {
-               exynos_state->zpos = exynos_plane->config->zpos;
                plane->state = &exynos_state->base;
                plane->state->plane = plane;
+               plane->state->zpos = exynos_plane->config->zpos;
        }
 }

@@ -155,7 +155,6 @@ exynos_drm_plane_duplicate_state(struct drm_plane *plane)
                return NULL;

        __drm_atomic_helper_plane_duplicate_state(plane, &copy->base);
-       copy->zpos = exynos_state->zpos;
        return &copy->base;
 }

@@ -168,43 +167,6 @@ static void exynos_drm_plane_destroy_state(struct 
drm_plane *plane,
        kfree(old_exynos_state);
 }

-static int exynos_drm_plane_atomic_set_property(struct drm_plane *plane,
-                                               struct drm_plane_state *state,
-                                               struct drm_property *property,
-                                               uint64_t val)
-{
-       struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
-       struct exynos_drm_plane_state *exynos_state =
-                                       to_exynos_plane_state(state);
-       struct exynos_drm_private *dev_priv = plane->dev->dev_private;
-       const struct exynos_drm_plane_config *config = exynos_plane->config;
-
-       if (property == dev_priv->plane_zpos_property &&
-           (config->capabilities & EXYNOS_DRM_PLANE_CAP_ZPOS))
-               exynos_state->zpos = val;
-       else
-               return -EINVAL;
-
-       return 0;
-}
-
-static int exynos_drm_plane_atomic_get_property(struct drm_plane *plane,
-                                         const struct drm_plane_state *state,
-                                         struct drm_property *property,
-                                         uint64_t *val)
-{
-       const struct exynos_drm_plane_state *exynos_state =
-               container_of(state, const struct exynos_drm_plane_state, base);
-       struct exynos_drm_private *dev_priv = plane->dev->dev_private;
-
-       if (property == dev_priv->plane_zpos_property)
-               *val = exynos_state->zpos;
-       else
-               return -EINVAL;
-
-       return 0;
-}
-
 static struct drm_plane_funcs exynos_plane_funcs = {
        .update_plane   = drm_atomic_helper_update_plane,
        .disable_plane  = drm_atomic_helper_disable_plane,
@@ -213,8 +175,6 @@ static struct drm_plane_funcs exynos_plane_funcs = {
        .reset          = exynos_drm_plane_reset,
        .atomic_duplicate_state = exynos_drm_plane_duplicate_state,
        .atomic_destroy_state = exynos_drm_plane_destroy_state,
-       .atomic_set_property = exynos_drm_plane_atomic_set_property,
-       .atomic_get_property = exynos_drm_plane_atomic_get_property,
 };

 static int
@@ -302,20 +262,23 @@ static const struct drm_plane_helper_funcs 
plane_helper_funcs = {
 };

 static void exynos_plane_attach_zpos_property(struct drm_plane *plane,
-                                             unsigned int zpos)
+                                             unsigned int zpos, bool immutable)
 {
        struct drm_device *dev = plane->dev;
-       struct exynos_drm_private *dev_priv = dev->dev_private;
        struct drm_property *prop;

-       prop = dev_priv->plane_zpos_property;
-       if (!prop) {
-               prop = drm_property_create_range(dev, 0, "zpos",
-                                                0, MAX_PLANE - 1);
-               if (!prop)
-                       return;
-
-               dev_priv->plane_zpos_property = prop;
+       if (immutable) {
+               if (!dev->mode_config.zpos_immutable_property)
+                       if (drm_mode_create_zpos_immutable_property(dev, 0,
+                                                               MAX_PLANE - 1))
+                               return;
+               prop = dev->mode_config.zpos_immutable_property;
+       } else {
+               if (!dev->mode_config.zpos_property)
+                       if (drm_mode_create_zpos_property(dev, 0,
+                                                         MAX_PLANE - 1))
+                               return;
+               prop = dev->mode_config.zpos_property;
        }

        drm_object_attach_property(&plane->base, prop, zpos);
@@ -344,7 +307,8 @@ int exynos_plane_init(struct drm_device *dev,
        exynos_plane->index = index;
        exynos_plane->config = config;

-       exynos_plane_attach_zpos_property(&exynos_plane->base, config->zpos);
+       exynos_plane_attach_zpos_property(&exynos_plane->base, config->zpos,
+                          !(config->capabilities & EXYNOS_DRM_PLANE_CAP_ZPOS));

        return 0;
 }
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c 
b/drivers/gpu/drm/exynos/exynos_mixer.c
index b5fbc1cbf024..d00c201773c9 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -478,6 +478,7 @@ static void vp_video_buffer(struct mixer_context *ctx,
        struct drm_display_mode *mode = &state->base.crtc->state->adjusted_mode;
        struct mixer_resources *res = &ctx->mixer_res;
        struct drm_framebuffer *fb = state->base.fb;
+       unsigned int priority = state->base.normalized_zpos + 1;
        unsigned long flags;
        dma_addr_t luma_addr[2], chroma_addr[2];
        bool tiled_mode = false;
@@ -562,7 +563,7 @@ static void vp_video_buffer(struct mixer_context *ctx,

        mixer_cfg_scan(ctx, mode->vdisplay);
        mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
-       mixer_cfg_layer(ctx, plane->index, state->zpos + 1, true);
+       mixer_cfg_layer(ctx, plane->index, priority, true);
        mixer_cfg_vp_blend(ctx);
        mixer_run(ctx);

@@ -587,6 +588,7 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
        struct drm_display_mode *mode = &state->base.crtc->state->adjusted_mode;
        struct mixer_resources *res = &ctx->mixer_res;
        struct drm_framebuffer *fb = state->base.fb;
+       unsigned int priority = state->base.normalized_zpos + 1;
        unsigned long flags;
        unsigned int win = plane->index;
        unsigned int x_ratio = 0, y_ratio = 0;
@@ -678,7 +680,7 @@ static void mixer_graph_buffer(struct mixer_context *ctx,

        mixer_cfg_scan(ctx, mode->vdisplay);
        mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
-       mixer_cfg_layer(ctx, win, state->zpos + 1, true);
+       mixer_cfg_layer(ctx, win, priority, true);
        mixer_cfg_gfx_blend(ctx, win, is_alpha_format(fb->pixel_format));

        /* layer update mandatory for mixer 16.0.33.0 */
-- 
1.9.2

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