cregit-Linux how code gets into the kernel

Release 4.12 include/linux/of_platform.h

Directory: include/linux
#ifndef _LINUX_OF_PLATFORM_H

#define _LINUX_OF_PLATFORM_H
/*
 *    Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp.
 *                       <benh@kernel.crashing.org>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version
 *  2 of the License, or (at your option) any later version.
 *
 */

#include <linux/device.h>
#include <linux/mod_devicetable.h>
#include <linux/pm.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>

/**
 * struct of_dev_auxdata - lookup table entry for device names & platform_data
 * @compatible: compatible value of node to match against node
 * @phys_addr: Start address of registers to match against node
 * @name: Name to assign for matching nodes
 * @platform_data: platform_data to assign for matching nodes
 *
 * This lookup table allows the caller of of_platform_populate() to override
 * the names of devices when creating devices from the device tree.  The table
 * should be terminated with an empty entry.  It also allows the platform_data
 * pointer to be set.
 *
 * The reason for this functionality is that some Linux infrastructure uses
 * the device name to look up a specific device, but the Linux-specific names
 * are not encoded into the device tree, so the kernel needs to provide specific
 * values.
 *
 * Note: Using an auxdata lookup table should be considered a last resort when
 * converting a platform to use the DT.  Normally the automatically generated
 * device name will not matter, and drivers should obtain data from the device
 * node instead of from an anonymous platform_data pointer.
 */

struct of_dev_auxdata {
	
char *compatible;
	
resource_size_t phys_addr;
	
char *name;
	
void *platform_data;
};

/* Macro to simplify populating a lookup table */

#define OF_DEV_AUXDATA(_compat,_phys,_name,_pdata) \
	{ .compatible = _compat, .phys_addr = _phys, .name = _name, \
          .platform_data = _pdata }

extern const struct of_device_id of_default_bus_match_table[];

/* Platform drivers register/unregister */
extern struct platform_device *of_device_alloc(struct device_node *np,
					 const char *bus_id,
					 struct device *parent);
extern struct platform_device *of_find_device_by_node(struct device_node *np);

/* Platform devices and busses creation */
extern struct platform_device *of_platform_device_create(struct device_node *np,
						   const char *bus_id,
						   struct device *parent);

extern int of_platform_device_destroy(struct device *dev, void *data);
extern int of_platform_bus_probe(struct device_node *root,
				 const struct of_device_id *matches,
				 struct device *parent);
#ifdef CONFIG_OF_ADDRESS
extern int of_platform_populate(struct device_node *root,
				const struct of_device_id *matches,
				const struct of_dev_auxdata *lookup,
				struct device *parent);
extern int of_platform_default_populate(struct device_node *root,
					const struct of_dev_auxdata *lookup,
					struct device *parent);
extern void of_platform_depopulate(struct device *parent);

extern int devm_of_platform_populate(struct device *dev);

extern void devm_of_platform_depopulate(struct device *dev);
#else

static inline int of_platform_populate(struct device_node *root, const struct of_device_id *matches, const struct of_dev_auxdata *lookup, struct device *parent) { return -ENODEV; }

Contributors

PersonTokensPropCommitsCommitProp
Grant C. Likely33100.00%1100.00%
Total33100.00%1100.00%


static inline int of_platform_default_populate(struct device_node *root, const struct of_dev_auxdata *lookup, struct device *parent) { return -ENODEV; }

Contributors

PersonTokensPropCommitsCommitProp
Hauke Mehrtens27100.00%1100.00%
Total27100.00%1100.00%


static inline void of_platform_depopulate(struct device *parent) { }

Contributors

PersonTokensPropCommitsCommitProp
Pawel Moll981.82%150.00%
Grant C. Likely218.18%150.00%
Total11100.00%2100.00%


static inline int devm_of_platform_populate(struct device *dev) { return -ENODEV; }

Contributors

PersonTokensPropCommitsCommitProp
Benjamin Gaignard16100.00%1100.00%
Total16100.00%1100.00%


static inline void devm_of_platform_depopulate(struct device *dev) { }

Contributors

PersonTokensPropCommitsCommitProp
Benjamin Gaignard11100.00%1100.00%
Total11100.00%1100.00%

#endif #if defined(CONFIG_OF_DYNAMIC) && defined(CONFIG_OF_ADDRESS) extern void of_platform_register_reconfig_notifier(void); #else
static inline void of_platform_register_reconfig_notifier(void) { }

Contributors

PersonTokensPropCommitsCommitProp
Pantelis Antoniou8100.00%1100.00%
Total8100.00%1100.00%

#endif #endif /* _LINUX_OF_PLATFORM_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Grant C. Likely17847.59%1052.63%
Hauke Mehrtens4812.83%15.26%
Benjamin Gaignard4712.57%15.26%
Stephen Rothwell338.82%15.26%
Pantelis Antoniou205.35%15.26%
Pawel Moll184.81%15.26%
Jan Glauber143.74%15.26%
Guenter Roeck102.67%15.26%
Arnd Bergmann51.34%15.26%
Geert Uytterhoeven10.27%15.26%
Total374100.00%19100.00%
Directory: include/linux
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