1/* SPDX-License-Identifier: GPL-2.0+ */
 2/*
 3 * Copyright 2021-2022 Bootlin
 4 * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
 5 */
 6
 7#ifndef _SUN6I_CSI_BRIDGE_H_
 8#define _SUN6I_CSI_BRIDGE_H_
 9
10#include <media/v4l2-device.h>
11#include <media/v4l2-fwnode.h>
12
13#define SUN6I_CSI_BRIDGE_NAME	"sun6i-csi-bridge"
14
15enum sun6i_csi_bridge_pad {
16	SUN6I_CSI_BRIDGE_PAD_SINK	= 0,
17	SUN6I_CSI_BRIDGE_PAD_SOURCE	= 1,
18	SUN6I_CSI_BRIDGE_PAD_COUNT	= 2,
19};
20
21struct sun6i_csi_device;
22
23struct sun6i_csi_bridge_format {
24	u32	mbus_code;
25	u8	input_format;
26	u8	input_yuv_seq;
27	u8	input_yuv_seq_invert;
28};
29
30struct sun6i_csi_bridge_source {
31	struct v4l2_subdev		*subdev;
32	struct v4l2_fwnode_endpoint	endpoint;
33	bool				expected;
34};
35
36struct sun6i_csi_bridge_async_subdev {
37	struct v4l2_async_connection	async_subdev;
38	struct sun6i_csi_bridge_source	*source;
39};
40
41struct sun6i_csi_bridge {
42	struct v4l2_subdev		subdev;
43	struct v4l2_async_notifier	notifier;
44	struct media_pad		pads[2];
45	struct v4l2_mbus_framefmt	mbus_format;
46	struct mutex			lock; /* Mbus format lock. */
47
48	struct sun6i_csi_bridge_source	source_parallel;
49	struct sun6i_csi_bridge_source	source_mipi_csi2;
50};
51
52/* Helpers */
53
54void sun6i_csi_bridge_dimensions(struct sun6i_csi_device *csi_dev,
55				 unsigned int *width, unsigned int *height);
56void sun6i_csi_bridge_format(struct sun6i_csi_device *csi_dev,
57			     u32 *mbus_code, u32 *field);
58
59/* Format */
60
61const struct sun6i_csi_bridge_format *
62sun6i_csi_bridge_format_find(u32 mbus_code);
63
64/* Bridge */
65
66int sun6i_csi_bridge_setup(struct sun6i_csi_device *csi_dev);
67void sun6i_csi_bridge_cleanup(struct sun6i_csi_device *csi_dev);
68
69#endif