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

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * rcar_du_group.c  --  R-Car Display Unit Planes and CRTCs Group
   4  *
   5  * Copyright (C) 2013-2014 Renesas Electronics Corporation
   6  *
   7  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   8  */
   9
  10 #ifndef __RCAR_DU_GROUP_H__
  11 #define __RCAR_DU_GROUP_H__
  12
  13 #include <linux/mutex.h>
  14
  15 #include "rcar_du_plane.h"
  16
  17 struct rcar_du_device;
  18
  19 /*
  20  * struct rcar_du_group - CRTCs and planes group
  21  * @dev: the DU device
  22  * @mmio_offset: registers offset in the device memory map
  23  * @index: group index
  24  * @channels_mask: bitmask of populated DU channels in this group
  25  * @cmms_mask: bitmask of available CMMs in this group
  26  * @num_crtcs: number of CRTCs in this group (1 or 2)
  27  * @use_count: number of users of the group (rcar_du_group_(get|put))
  28  * @used_crtcs: number of CRTCs currently in use
  29  * @lock: protects the dptsr_planes field and the DPTSR register
  30  * @dptsr_planes: bitmask of planes driven by dot-clock and timing generator 1
  31  * @num_planes: number of planes in the group
  32  * @planes: planes handled by the group
  33  * @need_restart: the group needs to be restarted due to a configuration change
  34  */
  35 struct rcar_du_group {
  36         struct rcar_du_device *dev;
  37         unsigned int mmio_offset;
  38         unsigned int index;
  39
  40         unsigned int channels_mask;
  41         unsigned int cmms_mask;
  42         unsigned int num_crtcs;
  43         unsigned int use_count;
  44         unsigned int used_crtcs;
  45
  46         struct mutex lock;
  47         unsigned int dptsr_planes;
  48
  49         unsigned int num_planes;
  50         struct rcar_du_plane planes[RCAR_DU_NUM_KMS_PLANES];
  51         bool need_restart;
  52 };
  53
  54 u32 rcar_du_group_read(struct rcar_du_group *rgrp, u32 reg);
  55 void rcar_du_group_write(struct rcar_du_group *rgrp, u32 reg, u32 data);
  56
  57 int rcar_du_group_get(struct rcar_du_group *rgrp);
  58 void rcar_du_group_put(struct rcar_du_group *rgrp);
  59 void rcar_du_group_start_stop(struct rcar_du_group *rgrp, bool start);
  60 void rcar_du_group_restart(struct rcar_du_group *rgrp);
  61 int rcar_du_group_set_routing(struct rcar_du_group *rgrp);
  62
  63 int rcar_du_set_dpad0_vsp1_routing(struct rcar_du_device *rcdu);
  64
  65 #endif /* __RCAR_DU_GROUP_H__ */