fd9fdb78a9
This patch moves the parsing helpers used to parse connected graphs in the device tree, like the video interface bindings documented in Documentation/devicetree/bindings/media/video-interfaces.txt, from drivers/media/v4l2-core/v4l2-of.c into drivers/of/base.c. This allows to reuse the same parser code from outside the V4L2 framework, most importantly from display drivers. The functions v4l2_of_get_next_endpoint, v4l2_of_get_remote_port, and v4l2_of_get_remote_port_parent are moved. They are renamed to of_graph_get_next_endpoint, of_graph_get_remote_port, and of_graph_get_remote_port_parent, respectively. Since there are not that many current users yet, switch all of them to the new functions right away. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
87 lines
2.2 KiB
C
87 lines
2.2 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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*/
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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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};
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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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* @port: identifier (value of reg property) of a port this endpoint belongs to
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* @id: identifier (value of reg property) of this endpoint
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* @local_node: pointer to device_node of this endpoint
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* @bus_type: bus type
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* @bus: bus configuration data structure
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* @head: list head for this structure
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*/
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struct v4l2_of_endpoint {
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unsigned int port;
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unsigned int id;
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const struct device_node *local_node;
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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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struct list_head head;
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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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#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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#endif /* CONFIG_OF */
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#endif /* _V4L2_OF_H */
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