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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/*
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* V4L2 OF binding parsing library
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*
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* Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
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* Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
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*
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* Copyright (C) 2012 Renesas Electronics Corp.
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* Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*/
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#ifndef _V4L2_OF_H
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#define _V4L2_OF_H
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#include <linux/list.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/of_graph.h>
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#include <media/v4l2-mediabus.h>
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struct device_node;
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/**
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* struct v4l2_of_bus_mipi_csi2 - MIPI CSI-2 bus data structure
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* @flags: media bus (V4L2_MBUS_*) flags
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* @data_lanes: an array of physical data lane indexes
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* @clock_lane: physical lane index of the clock lane
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* @num_data_lanes: number of data lanes
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* @lane_polarities: polarity of the lanes. The order is the same of
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* the physical lanes.
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*/
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struct v4l2_of_bus_mipi_csi2 {
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unsigned int flags;
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unsigned char data_lanes[4];
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unsigned char clock_lane;
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unsigned short num_data_lanes;
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bool lane_polarities[5];
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};
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/**
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* struct v4l2_of_bus_parallel - parallel data bus data structure
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* @flags: media bus (V4L2_MBUS_*) flags
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* @bus_width: bus width in bits
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* @data_shift: data shift in bits
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*/
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struct v4l2_of_bus_parallel {
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unsigned int flags;
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unsigned char bus_width;
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unsigned char data_shift;
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};
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/**
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* struct v4l2_of_endpoint - the endpoint data structure
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* @base: struct of_endpoint containing port, id, and local of_node
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* @bus_type: bus type
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* @bus: bus configuration data structure
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* @link_frequencies: array of supported link frequencies
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* @nr_of_link_frequencies: number of elements in link_frequenccies array
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*/
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struct v4l2_of_endpoint {
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struct of_endpoint base;
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/* Fields below this line will be zeroed by v4l2_of_parse_endpoint() */
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enum v4l2_mbus_type bus_type;
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union {
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struct v4l2_of_bus_parallel parallel;
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struct v4l2_of_bus_mipi_csi2 mipi_csi2;
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} bus;
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u64 *link_frequencies;
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unsigned int nr_of_link_frequencies;
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};
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/**
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* struct v4l2_of_link - a link between two endpoints
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* @local_node: pointer to device_node of this endpoint
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* @local_port: identifier of the port this endpoint belongs to
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* @remote_node: pointer to device_node of the remote endpoint
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* @remote_port: identifier of the port the remote endpoint belongs to
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*/
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struct v4l2_of_link {
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struct device_node *local_node;
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unsigned int local_port;
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struct device_node *remote_node;
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unsigned int remote_port;
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};
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#ifdef CONFIG_OF
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int v4l2_of_parse_endpoint(const struct device_node *node,
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struct v4l2_of_endpoint *endpoint);
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struct v4l2_of_endpoint *v4l2_of_alloc_parse_endpoint(
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const struct device_node *node);
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void v4l2_of_free_endpoint(struct v4l2_of_endpoint *endpoint);
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int v4l2_of_parse_link(const struct device_node *node,
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struct v4l2_of_link *link);
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void v4l2_of_put_link(struct v4l2_of_link *link);
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#else /* CONFIG_OF */
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static inline int v4l2_of_parse_endpoint(const struct device_node *node,
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struct v4l2_of_endpoint *link)
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{
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return -ENOSYS;
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}
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static inline struct v4l2_of_endpoint *v4l2_of_alloc_parse_endpoint(
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const struct device_node *node)
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{
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return NULL;
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}
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static inline void v4l2_of_free_endpoint(struct v4l2_of_endpoint *endpoint)
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{
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}
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static inline int v4l2_of_parse_link(const struct device_node *node,
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struct v4l2_of_link *link)
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{
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return -ENOSYS;
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}
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static inline void v4l2_of_put_link(struct v4l2_of_link *link)
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{
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}
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#endif /* CONFIG_OF */
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#endif /* _V4L2_OF_H */
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