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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177/* SPDX-License-Identifier: GPL-2.0 *//* * 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> */#ifndef __LINUX_OF_GRAPH_H#define __LINUX_OF_GRAPH_H
#include <linux/cleanup.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))
/** * for_each_of_graph_port - iterate over every port in a device or ports node * @parent: parent device or ports node containing port * @child: loop variable pointing to the current port node * * When breaking out of the loop, and continue to use the @child, you need to * use return_ptr(@child) or no_free_ptr(@child) not to call __free() for it. */#define for_each_of_graph_port(parent, child) \ for (struct device_node *child __free(device_node) = of_graph_get_next_port(parent, NULL);\ child != NULL; child = of_graph_get_next_port(parent, child))
/** * for_each_of_graph_port_endpoint - iterate over every endpoint in a port node * @parent: parent port node * @child: loop variable pointing to the current endpoint node * * When breaking out of the loop, and continue to use the @child, you need to * use return_ptr(@child) or no_free_ptr(@child) not to call __free() for it. */#define for_each_of_graph_port_endpoint(parent, child) \ for (struct device_node *child __free(device_node) = of_graph_get_next_port_endpoint(parent, NULL);\ child != NULL; child = of_graph_get_next_port_endpoint(parent, child))
#ifdef CONFIG_OFbool of_graph_is_present(const struct device_node *node);int of_graph_parse_endpoint(const struct device_node *node, struct of_endpoint *endpoint);unsigned int of_graph_get_endpoint_count(const struct device_node *np);unsigned int of_graph_get_port_count(struct device_node *np);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_next_port(const struct device_node *parent, struct device_node *port);struct device_node *of_graph_get_next_port_endpoint(const struct device_node *port, struct device_node *prev);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_endpoint( const struct device_node *node);struct device_node *of_graph_get_port_parent(struct device_node *node);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 bool of_graph_is_present(const struct device_node *node){ return false;}
static inline int of_graph_parse_endpoint(const struct device_node *node, struct of_endpoint *endpoint){ return -ENOSYS;}
static inline unsigned int of_graph_get_endpoint_count(const struct device_node *np){ return 0;}
static inline unsigned int of_graph_get_port_count(struct device_node *np){ return 0;}
static inline struct device_node *of_graph_get_port_by_id( struct device_node *node, u32 id){ return NULL;}
static inline struct device_node *of_graph_get_next_endpoint( const struct device_node *parent, struct device_node *previous){ return NULL;}
static inline struct device_node *of_graph_get_next_port( const struct device_node *parent, struct device_node *previous){ return NULL;}
static inline struct device_node *of_graph_get_next_port_endpoint( const struct device_node *parent, struct device_node *previous){ return NULL;}
static inline struct device_node *of_graph_get_endpoint_by_regs( const struct device_node *parent, int port_reg, int reg){ return NULL;}
static inline struct device_node *of_graph_get_remote_endpoint( const struct device_node *node){ return NULL;}
static inline struct device_node *of_graph_get_port_parent( struct device_node *node){ return NULL;}
static inline struct device_node *of_graph_get_remote_port_parent( const struct device_node *node){ return NULL;}
static inline struct device_node *of_graph_get_remote_port( const struct device_node *node){ return NULL;}static inline struct device_node *of_graph_get_remote_node( const struct device_node *node, u32 port, u32 endpoint){ return NULL;}
#endif /* CONFIG_OF */
#endif /* __LINUX_OF_GRAPH_H */