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linux
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__ */