drm: simple_kms_helper: Add prepare_fb and cleanup_fb hooks

Add .prepare_fb and .cleanup_fb plane hooks into the drm_simple_kms.
These can be used by drivers to call ie. the drm_fb_cma_setup_fence()
helper.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161002170124.6099-1-marex@denx.de

2 files changed, 46 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c
index 7b6d26e64977..7bae08c2bf0a 100644
--- a/drivers/gpu/drm/drm_simple_kms_helper.c
+++ b/drivers/gpu/drm/drm_simple_kms_helper.c
@@ -125,7 +125,33 @@ static void drm_simple_kms_plane_atomic_update(struct drm_plane *plane,
         pipe->funcs->update(pipe, pstate);
 }
 
+static int drm_simple_kms_plane_prepare_fb(struct drm_plane *plane,
+                                           struct drm_plane_state *state)
+{
+        struct drm_simple_display_pipe *pipe;
+
+        pipe = container_of(plane, struct drm_simple_display_pipe, plane);
+        if (!pipe->funcs || !pipe->funcs->prepare_fb)
+                return 0;
+
+        return pipe->funcs->prepare_fb(pipe, state);
+}
+
+static void drm_simple_kms_plane_cleanup_fb(struct drm_plane *plane,
+                                            struct drm_plane_state *state)
+{
+        struct drm_simple_display_pipe *pipe;
+
+        pipe = container_of(plane, struct drm_simple_display_pipe, plane);
+        if (!pipe->funcs || !pipe->funcs->cleanup_fb)
+                return;
+
+        pipe->funcs->cleanup_fb(pipe, state);
+}
+
 static const struct drm_plane_helper_funcs drm_simple_kms_plane_helper_funcs = {
+        .prepare_fb = drm_simple_kms_plane_prepare_fb,
+        .cleanup_fb = drm_simple_kms_plane_cleanup_fb,
         .atomic_check = drm_simple_kms_plane_atomic_check,
         .atomic_update = drm_simple_kms_plane_atomic_update,
 };
diff --git a/include/drm/drm_simple_kms_helper.h b/include/drm/drm_simple_kms_helper.h
index 5d112f75e04c..01a8436ccb0a 100644
--- a/include/drm/drm_simple_kms_helper.h
+++ b/include/drm/drm_simple_kms_helper.h
@@ -69,6 +69,26 @@ struct drm_simple_display_pipe_funcs {
          */
         void (*update)(struct drm_simple_display_pipe *pipe,
                        struct drm_plane_state *plane_state);
+
+        /**
+         * @prepare_fb:
+         *
+         * Optional, called by struct &drm_plane_helper_funcs ->prepare_fb .
+         * Please read the documentation for the ->prepare_fb hook in
+         * struct &drm_plane_helper_funcs for more details.
+         */
+        int (*prepare_fb)(struct drm_simple_display_pipe *pipe,
+                          struct drm_plane_state *plane_state);
+
+        /**
+         * @cleanup_fb:
+         *
+         * Optional, called by struct &drm_plane_helper_funcs ->cleanup_fb .
+         * Please read the documentation for the ->cleanup_fb hook in
+         * struct &drm_plane_helper_funcs for more details.
+         */
+        void (*cleanup_fb)(struct drm_simple_display_pipe *pipe,
+                           struct drm_plane_state *plane_state);
 };
 
 /**