drm/plane: add inline doc for struct drm_plane

Some of the members of struct drm_plane had extra comments so for these
add inline kernel comment to consolidate all documentation in one place.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
[danvet: Bikeshed a bit more to have real paragraphs with real
sentences.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1478513013-3221-4-git-send-email-gustavo@padovan.org

1 files changed, 44 insertions, 14 deletions

diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index 68f6d221a3da..29a175754aee 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -32,11 +32,6 @@ struct drm_crtc;
 /**
  * struct drm_plane_state - mutable plane state
  * @plane: backpointer to the plane
- * @crtc: currently bound CRTC, NULL if disabled
- * @fb: currently bound framebuffer
- * @fence: optional fence to wait for before scanning out @fb
- * @crtc_x: left position of visible portion of plane on crtc
- * @crtc_y: upper position of visible portion of plane on crtc
  * @crtc_w: width of visible portion of plane on crtc
  * @crtc_h: height of visible portion of plane on crtc
  * @src_x: left position of visible portion of plane within
@@ -51,18 +46,51 @@ struct drm_crtc;
  *      where N is the number of active planes for given crtc
  * @src: clipped source coordinates of the plane (in 16.16)
  * @dst: clipped destination coordinates of the plane
- * @visible: visibility of the plane
  * @state: backpointer to global drm_atomic_state
  */
 struct drm_plane_state {
         struct drm_plane *plane;
 
-        struct drm_crtc *crtc;   /* do not write directly, use drm_atomic_set_crtc_for_plane() */
-        struct drm_framebuffer *fb;  /* do not write directly, use drm_atomic_set_fb_for_plane() */
-        struct dma_fence *fence; /* do not write directly, use drm_atomic_set_fence_for_plane() */
+        /**
+         * @crtc:
+         *
+         * Currently bound CRTC, NULL if disabled. Do not this write directly,
+         * use drm_atomic_set_crtc_for_plane()
+         */
+        struct drm_crtc *crtc;
+
+        /**
+         * @fb:
+         *
+         * Currently bound framebuffer. Do not write this directly, use
+         * drm_atomic_set_fb_for_plane()
+         */
+        struct drm_framebuffer *fb;
+
+        /**
+         * @fence:
+         *
+         * Optional fence to wait for before scanning out @fb. Do not write this
+         * directly, use drm_atomic_set_fence_for_plane()
+         */
+        struct dma_fence *fence;
+
+        /**
+         * @crtc_x:
+         *
+         * Left position of visible portion of plane on crtc, signed dest
+         * location allows it to be partially off screen.
+         */
+
+        int32_t crtc_x;
+        /**
+         * @crtc_y:
+         *
+         * Upper position of visible portion of plane on crtc, signed dest
+         * location allows it to be partially off screen.
+         */
+        int32_t crtc_y;
 
-        /* Signed dest location allows it to be partially off screen */
-        int32_t crtc_x, crtc_y;
         uint32_t crtc_w, crtc_h;
 
         /* Source values are 16.16 fixed point */
@@ -79,9 +107,11 @@ struct drm_plane_state {
         /* Clipped coordinates */
         struct drm_rect src, dst;
 
-        /*
-         * Is the plane actually visible? Can be false even
-         * if fb!=NULL and crtc!=NULL, due to clipping.
+        /**
+         * @visible:
+         *
+         * Visibility of the plane. This can be false even if fb!=NULL and
+         * crtc!=NULL, due to clipping.
          */
         bool visible;