eca3930163
of_platform_bus was being used in the same manner as the platform_bus. The only difference being that of_platform_bus devices are generated from data in the device tree, and platform_bus devices are usually statically allocated in platform code. Having them separate causes the problem of device drivers having to be registered twice if it was possible for the same device to appear on either bus. This patch removes of_platform_bus_type and registers all of_platform bus devices and drivers on the platform bus instead. A previous patch made the of_device structure an alias for the platform_device structure, and a shim is used to adapt of_platform_drivers to the platform bus. After all of of_platform_bus drivers are converted to be normal platform drivers, the shim code can be removed. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: David S. Miller <davem@davemloft.net>
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
#ifndef _LINUX_OF_PLATFORM_H
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#define _LINUX_OF_PLATFORM_H
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/*
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* Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp.
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* <benh@kernel.crashing.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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*/
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#ifdef CONFIG_OF_DEVICE
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/mod_devicetable.h>
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#include <linux/pm.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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/*
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* of_platform_bus_type isn't it's own bus anymore. It's now just an alias
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* for the platform bus.
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*/
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#define of_platform_bus_type platform_bus_type
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extern const struct of_device_id of_default_bus_ids[];
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/*
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* An of_platform_driver driver is attached to a basic of_device on
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* the "platform bus" (platform_bus_type).
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*/
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struct of_platform_driver
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{
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int (*probe)(struct of_device* dev,
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const struct of_device_id *match);
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int (*remove)(struct of_device* dev);
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int (*suspend)(struct of_device* dev, pm_message_t state);
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int (*resume)(struct of_device* dev);
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int (*shutdown)(struct of_device* dev);
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struct device_driver driver;
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struct platform_driver platform_driver;
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};
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#define to_of_platform_driver(drv) \
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container_of(drv,struct of_platform_driver, driver)
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extern int of_register_driver(struct of_platform_driver *drv,
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struct bus_type *bus);
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extern void of_unregister_driver(struct of_platform_driver *drv);
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/* Platform drivers register/unregister */
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extern int of_register_platform_driver(struct of_platform_driver *drv);
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extern void of_unregister_platform_driver(struct of_platform_driver *drv);
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extern struct of_device *of_device_alloc(struct device_node *np,
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const char *bus_id,
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struct device *parent);
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#include <asm/of_platform.h>
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extern struct of_device *of_find_device_by_node(struct device_node *np);
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extern int of_bus_type_init(struct bus_type *bus, const char *name);
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#if !defined(CONFIG_SPARC) /* SPARC has its own device registration method */
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/* Platform devices and busses creation */
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extern struct of_device *of_platform_device_create(struct device_node *np,
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const char *bus_id,
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struct device *parent);
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/* pseudo "matches" value to not do deep probe */
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#define OF_NO_DEEP_PROBE ((struct of_device_id *)-1)
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extern int of_platform_bus_probe(struct device_node *root,
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const struct of_device_id *matches,
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struct device *parent);
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#endif /* !CONFIG_SPARC */
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#endif /* CONFIG_OF_DEVICE */
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#endif /* _LINUX_OF_PLATFORM_H */
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