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