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ca50c197 SA |
1 | /* |
2 | * V4L2 fwnode binding parsing library | |
3 | * | |
4 | * Copyright (c) 2016 Intel Corporation. | |
5 | * Author: Sakari Ailus <sakari.ailus@linux.intel.com> | |
6 | * | |
7 | * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd. | |
8 | * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> | |
9 | * | |
10 | * Copyright (C) 2012 Renesas Electronics Corp. | |
11 | * Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de> | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of version 2 of the GNU General Public License as | |
15 | * published by the Free Software Foundation. | |
16 | */ | |
17 | #ifndef _V4L2_FWNODE_H | |
18 | #define _V4L2_FWNODE_H | |
19 | ||
20 | #include <linux/errno.h> | |
21 | #include <linux/fwnode.h> | |
22 | #include <linux/list.h> | |
23 | #include <linux/types.h> | |
24 | ||
25 | #include <media/v4l2-mediabus.h> | |
26 | ||
27 | struct fwnode_handle; | |
28 | ||
29 | /** | |
30 | * struct v4l2_fwnode_bus_mipi_csi2 - MIPI CSI-2 bus data structure | |
31 | * @flags: media bus (V4L2_MBUS_*) flags | |
32 | * @data_lanes: an array of physical data lane indexes | |
33 | * @clock_lane: physical lane index of the clock lane | |
34 | * @num_data_lanes: number of data lanes | |
35 | * @lane_polarities: polarity of the lanes. The order is the same of | |
36 | * the physical lanes. | |
37 | */ | |
38 | struct v4l2_fwnode_bus_mipi_csi2 { | |
39 | unsigned int flags; | |
40 | unsigned char data_lanes[4]; | |
41 | unsigned char clock_lane; | |
42 | unsigned short num_data_lanes; | |
43 | bool lane_polarities[5]; | |
44 | }; | |
45 | ||
46 | /** | |
47 | * struct v4l2_fwnode_bus_parallel - parallel data bus data structure | |
48 | * @flags: media bus (V4L2_MBUS_*) flags | |
49 | * @bus_width: bus width in bits | |
50 | * @data_shift: data shift in bits | |
51 | */ | |
52 | struct v4l2_fwnode_bus_parallel { | |
53 | unsigned int flags; | |
54 | unsigned char bus_width; | |
55 | unsigned char data_shift; | |
56 | }; | |
57 | ||
58 | /** | |
59 | * struct v4l2_fwnode_endpoint - the endpoint data structure | |
60 | * @base: fwnode endpoint of the v4l2_fwnode | |
61 | * @bus_type: bus type | |
62 | * @bus: bus configuration data structure | |
63 | * @link_frequencies: array of supported link frequencies | |
64 | * @nr_of_link_frequencies: number of elements in link_frequenccies array | |
65 | */ | |
66 | struct v4l2_fwnode_endpoint { | |
67 | struct fwnode_endpoint base; | |
68 | /* | |
69 | * Fields below this line will be zeroed by | |
70 | * v4l2_fwnode_parse_endpoint() | |
71 | */ | |
72 | enum v4l2_mbus_type bus_type; | |
73 | union { | |
74 | struct v4l2_fwnode_bus_parallel parallel; | |
75 | struct v4l2_fwnode_bus_mipi_csi2 mipi_csi2; | |
76 | } bus; | |
77 | u64 *link_frequencies; | |
78 | unsigned int nr_of_link_frequencies; | |
79 | }; | |
80 | ||
81 | /** | |
82 | * struct v4l2_fwnode_link - a link between two endpoints | |
83 | * @local_node: pointer to device_node of this endpoint | |
84 | * @local_port: identifier of the port this endpoint belongs to | |
85 | * @remote_node: pointer to device_node of the remote endpoint | |
86 | * @remote_port: identifier of the port the remote endpoint belongs to | |
87 | */ | |
88 | struct v4l2_fwnode_link { | |
89 | struct fwnode_handle *local_node; | |
90 | unsigned int local_port; | |
91 | struct fwnode_handle *remote_node; | |
92 | unsigned int remote_port; | |
93 | }; | |
94 | ||
95 | int v4l2_fwnode_endpoint_parse(struct fwnode_handle *fwnode, | |
96 | struct v4l2_fwnode_endpoint *vep); | |
97 | struct v4l2_fwnode_endpoint *v4l2_fwnode_endpoint_alloc_parse( | |
98 | struct fwnode_handle *fwnode); | |
99 | void v4l2_fwnode_endpoint_free(struct v4l2_fwnode_endpoint *vep); | |
100 | int v4l2_fwnode_parse_link(struct fwnode_handle *fwnode, | |
101 | struct v4l2_fwnode_link *link); | |
102 | void v4l2_fwnode_put_link(struct v4l2_fwnode_link *link); | |
103 | ||
104 | #endif /* _V4L2_FWNODE_H */ |