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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | /* * V4L2 fwnode binding parsing library * * Copyright (c) 2016 Intel Corporation. * Author: Sakari Ailus <sakari.ailus@linux.intel.com> * * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd. * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> * * Copyright (C) 2012 Renesas Electronics Corp. * Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de> * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. */ #ifndef _V4L2_FWNODE_H #define _V4L2_FWNODE_H #include <linux/errno.h> #include <linux/fwnode.h> #include <linux/list.h> #include <linux/types.h> #include <media/v4l2-mediabus.h> struct fwnode_handle; #define V4L2_FWNODE_CSI2_MAX_DATA_LANES 4 /** * struct v4l2_fwnode_bus_mipi_csi2 - MIPI CSI-2 bus data structure * @flags: media bus (V4L2_MBUS_*) flags * @data_lanes: an array of physical data lane indexes * @clock_lane: physical lane index of the clock lane * @num_data_lanes: number of data lanes * @lane_polarities: polarity of the lanes. The order is the same of * the physical lanes. */ struct v4l2_fwnode_bus_mipi_csi2 { unsigned int flags; unsigned char data_lanes[V4L2_FWNODE_CSI2_MAX_DATA_LANES]; unsigned char clock_lane; unsigned short num_data_lanes; bool lane_polarities[1 + V4L2_FWNODE_CSI2_MAX_DATA_LANES]; }; /** * struct v4l2_fwnode_bus_parallel - parallel data bus data structure * @flags: media bus (V4L2_MBUS_*) flags * @bus_width: bus width in bits * @data_shift: data shift in bits */ struct v4l2_fwnode_bus_parallel { unsigned int flags; unsigned char bus_width; unsigned char data_shift; }; /** * struct v4l2_fwnode_bus_mipi_csi1 - CSI-1/CCP2 data bus structure * @clock_inv: polarity of clock/strobe signal * false - not inverted, true - inverted * @strobe: false - data/clock, true - data/strobe * @lane_polarity: the polarities of the clock (index 0) and data lanes * index (1) * @data_lane: the number of the data lane * @clock_lane: the number of the clock lane */ struct v4l2_fwnode_bus_mipi_csi1 { bool clock_inv; bool strobe; bool lane_polarity[2]; unsigned char data_lane; unsigned char clock_lane; }; /** * struct v4l2_fwnode_endpoint - the endpoint data structure * @base: fwnode endpoint of the v4l2_fwnode * @bus_type: bus type * @bus: bus configuration data structure * @link_frequencies: array of supported link frequencies * @nr_of_link_frequencies: number of elements in link_frequenccies array */ struct v4l2_fwnode_endpoint { struct fwnode_endpoint base; /* * Fields below this line will be zeroed by * v4l2_fwnode_parse_endpoint() */ enum v4l2_mbus_type bus_type; union { struct v4l2_fwnode_bus_parallel parallel; struct v4l2_fwnode_bus_mipi_csi1 mipi_csi1; struct v4l2_fwnode_bus_mipi_csi2 mipi_csi2; } bus; u64 *link_frequencies; unsigned int nr_of_link_frequencies; }; /** * struct v4l2_fwnode_link - a link between two endpoints * @local_node: pointer to device_node of this endpoint * @local_port: identifier of the port this endpoint belongs to * @remote_node: pointer to device_node of the remote endpoint * @remote_port: identifier of the port the remote endpoint belongs to */ struct v4l2_fwnode_link { struct fwnode_handle *local_node; unsigned int local_port; struct fwnode_handle *remote_node; unsigned int remote_port; }; int v4l2_fwnode_endpoint_parse(struct fwnode_handle *fwnode, struct v4l2_fwnode_endpoint *vep); struct v4l2_fwnode_endpoint *v4l2_fwnode_endpoint_alloc_parse( struct fwnode_handle *fwnode); void v4l2_fwnode_endpoint_free(struct v4l2_fwnode_endpoint *vep); int v4l2_fwnode_parse_link(struct fwnode_handle *fwnode, struct v4l2_fwnode_link *link); void v4l2_fwnode_put_link(struct v4l2_fwnode_link *link); #endif /* _V4L2_FWNODE_H */ |