/*
* include/linux/superhyway.h
*
* SuperHyway Bus definitions
*
* Copyright (C) 2004, 2005 Paul Mundt <[email protected]>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef __LINUX_SUPERHYWAY_H
#define __LINUX_SUPERHYWAY_H

#include <linux/device.h>

/*
* SuperHyway IDs
*/
#define SUPERHYWAY_DEVICE_ID_SH5_DMAC 0x0183

struct superhyway_vcr_info {
u8 perr_flags; /* P-port Error flags */
u8 merr_flags; /* Module Error flags */
u16 mod_vers; /* Module Version */
u16 mod_id; /* Module ID */
u8 bot_mb; /* Bottom Memory block */
u8 top_mb; /* Top Memory block */
};

struct superhyway_ops {
int (*read_vcr)(unsigned long base, struct superhyway_vcr_info *vcr);
int (*write_vcr)(unsigned long base, struct superhyway_vcr_info vcr);
};

struct superhyway_bus {
struct superhyway_ops *ops;
};

extern struct superhyway_bus superhyway_channels[];

struct superhyway_device_id {
unsigned int id;
unsigned long driver_data;
};

struct superhyway_device;
extern struct bus_type superhyway_bus_type;

struct superhyway_driver {
char *name;

const struct superhyway_device_id *id_table;
struct device_driver drv;

int (*probe)(struct superhyway_device *dev, const struct superhyway_device_id *id);
void (*remove)(struct superhyway_device *dev);
};

#define to_superhyway_driver(d) container_of((d), struct superhyway_driver, drv)

struct superhyway_device {
char name[32];

struct device dev;

struct superhyway_device_id id;
struct superhyway_driver *drv;
struct superhyway_bus *bus;

int num_resources;
struct resource *resource;
struct superhyway_vcr_info vcr;
};

#define to_superhyway_device(d) container_of((d), struct superhyway_device, dev)

#define superhyway_get_drvdata(d) dev_get_drvdata(&(d)->dev)
#define superhyway_set_drvdata(d,p) dev_set_drvdata(&(d)->dev, (p))

static inline int
superhyway_read_vcr(struct superhyway_device *dev, unsigned long base,
struct superhyway_vcr_info *vcr)
{
return dev->bus->ops->read_vcr(base, vcr);
}

static inline int
superhyway_write_vcr(struct superhyway_device *dev, unsigned long base,
struct superhyway_vcr_info vcr)
{
return dev->bus->ops->write_vcr(base, vcr);
}

extern int superhyway_scan_bus(struct superhyway_bus *);

/* drivers/sh/superhyway/superhyway.c */
int superhyway_register_driver(struct superhyway_driver *);
void superhyway_unregister_driver(struct superhyway_driver *);
int superhyway_add_device(unsigned long base, struct superhyway_device *, struct superhyway_bus *);
int superhyway_add_devices(struct superhyway_bus *bus, struct superhyway_device **devices, int nr_devices);

/* drivers/sh/superhyway/superhyway-sysfs.c */
extern struct device_attribute superhyway_dev_attrs[];

#endif /* __LINUX_SUPERHYWAY_H */