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

   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
  21 struct 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  */
  38 struct 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
  56 u32 rcar_du_group_read(struct rcar_du_group *rgrp, u32 reg);
  57 void rcar_du_group_write(struct rcar_du_group *rgrp, u32 reg, u32 data);
  58
  59 int rcar_du_group_get(struct rcar_du_group *rgrp);
  60 void rcar_du_group_put(struct rcar_du_group *rgrp);
  61 void rcar_du_group_start_stop(struct rcar_du_group *rgrp, bool start);
  62 void rcar_du_group_restart(struct rcar_du_group *rgrp);
  63 int rcar_du_group_set_routing(struct rcar_du_group *rgrp);
  64
  65 int rcar_du_set_dpad0_vsp1_routing(struct rcar_du_device *rcdu);
  66
  67 #endif /* __RCAR_DU_GROUP_H__ */