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 * @channels_mask: bitmask of populated DU channels in this group
  29 * @num_crtcs: number of CRTCs in this group (1 or 2)
  30 * @use_count: number of users of the group (rcar_du_group_(get|put))
  31 * @used_crtcs: number of CRTCs currently in use
  32 * @lock: protects the dptsr_planes field and the DPTSR register
  33 * @dptsr_planes: bitmask of planes driven by dot-clock and timing generator 1
  34 * @num_planes: number of planes in the group
  35 * @planes: planes handled by the group
  36 * @need_restart: the group needs to be restarted due to a configuration change
  37 */
  38struct rcar_du_group {
  39        struct rcar_du_device *dev;
  40        unsigned int mmio_offset;
  41        unsigned int index;
  42
  43        unsigned int channels_mask;
  44        unsigned int num_crtcs;
  45        unsigned int use_count;
  46        unsigned int used_crtcs;
  47
  48        struct mutex lock;
  49        unsigned int dptsr_planes;
  50
  51        unsigned int num_planes;
  52        struct rcar_du_plane planes[RCAR_DU_NUM_KMS_PLANES];
  53        bool need_restart;
  54};
  55
  56u32 rcar_du_group_read(struct rcar_du_group *rgrp, u32 reg);
  57void rcar_du_group_write(struct rcar_du_group *rgrp, u32 reg, u32 data);
  58
  59int rcar_du_group_get(struct rcar_du_group *rgrp);
  60void rcar_du_group_put(struct rcar_du_group *rgrp);
  61void rcar_du_group_start_stop(struct rcar_du_group *rgrp, bool start);
  62void rcar_du_group_restart(struct rcar_du_group *rgrp);
  63int rcar_du_group_set_routing(struct rcar_du_group *rgrp);
  64
  65int rcar_du_set_dpad0_vsp1_routing(struct rcar_du_device *rcdu);
  66
  67#endif /* __RCAR_DU_GROUP_H__ */
  68