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/*
* Allwinner Reduced Serial Bus Driver
*
* Copyright (c) 2015 Chen-Yu Tsai
*
* Author: Chen-Yu Tsai <wens@csie.org>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef _SUNXI_RSB_H
#define _SUNXI_RSB_H
#include <linux/device.h>
#include <linux/regmap.h>
#include <linux/types.h>
struct sunxi_rsb;
/**
* struct sunxi_rsb_device - Basic representation of an RSB device
* @dev: Driver model representation of the device.
* @ctrl: RSB controller managing the bus hosting this device.
* @rtaddr: This device's runtime address
* @hwaddr: This device's hardware address
*/
struct sunxi_rsb_device {
struct device dev;
struct sunxi_rsb *rsb;
int irq;
u8 rtaddr;
u16 hwaddr;
};
static inline struct sunxi_rsb_device *to_sunxi_rsb_device(struct device *d)
{
return container_of(d, struct sunxi_rsb_device, dev);
}
static inline void *sunxi_rsb_device_get_drvdata(const struct sunxi_rsb_device *rdev)
{
return dev_get_drvdata(&rdev->dev);
}
static inline void sunxi_rsb_device_set_drvdata(struct sunxi_rsb_device *rdev,
void *data)
{
dev_set_drvdata(&rdev->dev, data);
}
/**
* struct sunxi_rsb_driver - RSB slave device driver
* @driver: RSB device drivers should initialize name and owner field of
* this structure.
* @probe: binds this driver to a RSB device.
* @remove: unbinds this driver from the RSB device.
*/
struct sunxi_rsb_driver {
struct device_driver driver;
int (*probe)(struct sunxi_rsb_device *rdev);
int (*remove)(struct sunxi_rsb_device *rdev);
};
static inline struct sunxi_rsb_driver *to_sunxi_rsb_driver(struct device_driver *d)
{
return container_of(d, struct sunxi_rsb_driver, driver);
}
int sunxi_rsb_driver_register(struct sunxi_rsb_driver *rdrv);
/**
* sunxi_rsb_driver_unregister() - unregister an RSB client driver
* @rdrv: the driver to unregister
*/
static inline void sunxi_rsb_driver_unregister(struct sunxi_rsb_driver *rdrv)
{
if (rdrv)
driver_unregister(&rdrv->driver);
}
#define module_sunxi_rsb_driver(__sunxi_rsb_driver) \
module_driver(__sunxi_rsb_driver, sunxi_rsb_driver_register, \
sunxi_rsb_driver_unregister)
struct regmap *__devm_regmap_init_sunxi_rsb(struct sunxi_rsb_device *rdev,
const struct regmap_config *config,
struct lock_class_key *lock_key,
const char *lock_name);
/**
* devm_regmap_init_sunxi_rsb(): Initialise managed register map
*
* @rdev: Device that will be interacted with
* @config: Configuration for register map
*
* The return value will be an ERR_PTR() on error or a valid pointer
* to a struct regmap. The regmap will be automatically freed by the
* device management code.
*/
#define devm_regmap_init_sunxi_rsb(rdev, config) \
__regmap_lockdep_wrapper(__devm_regmap_init_sunxi_rsb, #config, \
rdev, config)
#endif /* _SUNXI_RSB_H */