cregit-Linux how code gets into the kernel

Release 4.12 include/linux/of_graph.h

Directory: include/linux
/*
 * OF graph binding parsing helpers
 *
 * 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 __LINUX_OF_GRAPH_H

#define __LINUX_OF_GRAPH_H

#include <linux/types.h>
#include <linux/errno.h>

/**
 * struct of_endpoint - the OF graph endpoint data structure
 * @port: identifier (value of reg property) of a port this endpoint belongs to
 * @id: identifier (value of reg property) of this endpoint
 * @local_node: pointer to device_node of this endpoint
 */

struct of_endpoint {
	
unsigned int port;
	
unsigned int id;
	
const struct device_node *local_node;
};

/**
 * for_each_endpoint_of_node - iterate over every endpoint in a device node
 * @parent: parent device node containing ports and endpoints
 * @child: loop variable pointing to the current endpoint node
 *
 * When breaking out of the loop, of_node_put(child) has to be called manually.
 */

#define for_each_endpoint_of_node(parent, child) \
	for (child = of_graph_get_next_endpoint(parent, NULL); child != NULL; \
             child = of_graph_get_next_endpoint(parent, child))

#ifdef CONFIG_OF
int of_graph_parse_endpoint(const struct device_node *node,
				struct of_endpoint *endpoint);
struct device_node *of_graph_get_port_by_id(struct device_node *node, u32 id);
struct device_node *of_graph_get_next_endpoint(const struct device_node *parent,
					struct device_node *previous);
struct device_node *of_graph_get_endpoint_by_regs(
		const struct device_node *parent, int port_reg, int reg);
struct device_node *of_graph_get_remote_port_parent(
					const struct device_node *node);
struct device_node *of_graph_get_remote_port(const struct device_node *node);
struct device_node *of_graph_get_remote_node(const struct device_node *node,
					     u32 port, u32 endpoint);
#else


static inline int of_graph_parse_endpoint(const struct device_node *node, struct of_endpoint *endpoint) { return -ENOSYS; }

Contributors

PersonTokensPropCommitsCommitProp
Philipp Zabel22100.00%1100.00%
Total22100.00%1100.00%


static inline struct device_node *of_graph_get_port_by_id( struct device_node *node, u32 id) { return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Philipp Zabel20100.00%1100.00%
Total20100.00%1100.00%


static inline struct device_node *of_graph_get_next_endpoint( const struct device_node *parent, struct device_node *previous) { return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Philipp Zabel23100.00%1100.00%
Total23100.00%1100.00%


static inline struct device_node *of_graph_get_endpoint_by_regs( const struct device_node *parent, int port_reg, int reg) { return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Hyungwon Hwang2291.67%150.00%
Inki Dae28.33%150.00%
Total24100.00%2100.00%


static inline struct device_node *of_graph_get_remote_port_parent( const struct device_node *node) { return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Philipp Zabel18100.00%1100.00%
Total18100.00%1100.00%


static inline struct device_node *of_graph_get_remote_port( const struct device_node *node) { return NULL; }

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PersonTokensPropCommitsCommitProp
Philipp Zabel18100.00%1100.00%
Total18100.00%1100.00%


static inline struct device_node *of_graph_get_remote_node( const struct device_node *node, u32 port, u32 endpoint) { return NULL; }

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Rob Herring24100.00%1100.00%
Total24100.00%1100.00%

#endif /* CONFIG_OF */ #endif /* __LINUX_OF_GRAPH_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Philipp Zabel22070.97%444.44%
Rob Herring4213.55%111.11%
Hyungwon Hwang4012.90%111.11%
Arnd Bergmann30.97%111.11%
Mark Brown30.97%111.11%
Inki Dae20.65%111.11%
Total310100.00%9100.00%
Directory: include/linux
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