/*
* 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);
void (*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 */
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