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linux-next/include/linux/of_platform.h
Grant Likely e7cc3aca0f dt: fix twl4030 for non-dt compile on x86
twl4030 still doesn't build correctly for x86 allmodconfig.  This
fix solves the missing symbol errors.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benoit Cousson <b-cousson@ti.com>
2012-03-05 08:09:09 -07:00

113 lines
3.8 KiB
C

#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.
*
*/
#ifdef CONFIG_OF_DEVICE
#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 anonymouns 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 }
/**
* of_platform_driver - Legacy of-aware driver for platform devices.
*
* An of_platform_driver driver is attached to a basic platform_device on
* the ibm ebus (ibmebus_bus_type).
*/
struct of_platform_driver
{
int (*probe)(struct platform_device* dev,
const struct of_device_id *match);
int (*remove)(struct platform_device* dev);
int (*suspend)(struct platform_device* dev, pm_message_t state);
int (*resume)(struct platform_device* dev);
int (*shutdown)(struct platform_device* dev);
struct device_driver driver;
};
#define to_of_platform_driver(drv) \
container_of(drv,struct of_platform_driver, driver)
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);
#ifdef CONFIG_OF_ADDRESS /* device reg helpers depend on OF_ADDRESS */
/* 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_bus_probe(struct device_node *root,
const struct of_device_id *matches,
struct device *parent);
extern int of_platform_populate(struct device_node *root,
const struct of_device_id *matches,
const struct of_dev_auxdata *lookup,
struct device *parent);
#endif /* CONFIG_OF_ADDRESS */
#endif /* CONFIG_OF_DEVICE */
#if !defined(CONFIG_OF_ADDRESS)
struct of_dev_auxdata;
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;
}
#endif /* !CONFIG_OF_ADDRESS */
#endif /* _LINUX_OF_PLATFORM_H */