LXR linux/drivers/gpu/drm/rcar-du/rcar_du

   1/*
   2 * rcar_du_group.c  --  R-Car Display Unit Planes and CRTCs Group
   3 *
   4 * Copyright (C) 2013-2014 Renesas Electronics 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_GROUP_H__
  15#define __RCAR_DU_GROUP_H__
  16
  17#include <linux/mutex.h>
  18
  19#include "rcar_du_plane.h"
  20
  21struct rcar_du_device;
  22
  23/*
  24 * struct rcar_du_group - CRTCs and planes group
  25 * @dev: the DU device
  26 * @mmio_offset: registers offset in the device memory map
  27 * @index: group index
  28 * @use_count: number of users of the group (rcar_du_group_(get|put))
  29 * @used_crtcs: number of CRTCs currently in use
  30 * @lock: protects the DPTSR register
  31 * @planes: planes handled by the group
  32 */
  33struct rcar_du_group {
  34        struct rcar_du_device *dev;
  35        unsigned int mmio_offset;
  36        unsigned int index;
  37
  38        unsigned int use_count;
  39        unsigned int used_crtcs;
  40
  41        struct mutex lock;
  42
  43        struct rcar_du_planes planes;
  44};
  45
  46u32 rcar_du_group_read(struct rcar_du_group *rgrp, u32 reg);
  47void rcar_du_group_write(struct rcar_du_group *rgrp, u32 reg, u32 data);
  48
  49int rcar_du_group_get(struct rcar_du_group *rgrp);
  50void rcar_du_group_put(struct rcar_du_group *rgrp);
  51void rcar_du_group_start_stop(struct rcar_du_group *rgrp, bool start);
  52void rcar_du_group_restart(struct rcar_du_group *rgrp);
  53int rcar_du_group_set_routing(struct rcar_du_group *rgrp);
  54
  55#endif /* __RCAR_DU_GROUP_H__ */
  56