drivers/gpu/drm/rcar-du/rcar_du_plane.h

   1 /*
   2  * rcar_du_plane.h  --  R-Car Display Unit Planes
   3  *
   4  * Copyright (C) 2013 Renesas Corporation
   5  *
   6  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  */
  13
  14 #ifndef __RCAR_DU_PLANE_H__
  15 #define __RCAR_DU_PLANE_H__
  16
  17 #include <linux/mutex.h>
  18
  19 #include <drm/drmP.h>
  20 #include <drm/drm_crtc.h>
  21
  22 struct rcar_du_format_info;
  23 struct rcar_du_group;
  24
  25 /* The RCAR DU has 8 hardware planes, shared between KMS planes and CRTCs. As
  26  * using KMS planes requires at least one of the CRTCs being enabled, no more
  27  * than 7 KMS planes can be available. We thus create 7 KMS planes and
  28  * 9 software planes (one for each KMS planes and one for each CRTC).
  29  */
  30
  31 #define RCAR_DU_NUM_KMS_PLANES          7
  32 #define RCAR_DU_NUM_HW_PLANES           8
  33 #define RCAR_DU_NUM_SW_PLANES           9
  34
  35 struct rcar_du_plane {
  36         struct rcar_du_group *group;
  37         struct drm_crtc *crtc;
  38
  39         bool enabled;
  40
  41         int hwindex;            /* 0-based, -1 means unused */
  42         unsigned int alpha;
  43         unsigned int colorkey;
  44         unsigned int zpos;
  45
  46         const struct rcar_du_format_info *format;
  47
  48         unsigned long dma[2];
  49         unsigned int pitch;
  50
  51         unsigned int width;
  52         unsigned int height;
  53
  54         unsigned int src_x;
  55         unsigned int src_y;
  56         unsigned int dst_x;
  57         unsigned int dst_y;
  58 };
  59
  60 struct rcar_du_planes {
  61         struct rcar_du_plane planes[RCAR_DU_NUM_SW_PLANES];
  62         unsigned int free;
  63         struct mutex lock;
  64
  65         struct drm_property *alpha;
  66         struct drm_property *colorkey;
  67         struct drm_property *zpos;
  68 };
  69
  70 int rcar_du_planes_init(struct rcar_du_group *rgrp);
  71 int rcar_du_planes_register(struct rcar_du_group *rgrp);
  72
  73 void rcar_du_plane_setup(struct rcar_du_plane *plane);
  74 void rcar_du_plane_update_base(struct rcar_du_plane *plane);
  75 void rcar_du_plane_compute_base(struct rcar_du_plane *plane,
  76                                 struct drm_framebuffer *fb);
  77 int rcar_du_plane_reserve(struct rcar_du_plane *plane,
  78                           const struct rcar_du_format_info *format);
  79 void rcar_du_plane_release(struct rcar_du_plane *plane);
  80
  81 #endif /* __RCAR_DU_PLANE_H__ */