/*

 *  Silicon Labs C2 port Linux support

 *

 *  Copyright (c) 2007 Rodolfo Giometti <giometti@linux.it>

 *  Copyright (c) 2007 Eurotech S.p.A. <info@eurotech.it>

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 as published by

 * the Free Software Foundation

 */

#include <linux/device.h>

#define C2PORT_NAME_LEN			32

/*

 * C2 port basic structs

 */

/* Main struct */

struct c2port_ops;

struct c2port_device {

	unsigned int access:1;

	unsigned int flash_access:1;

	int id;

	char name[C2PORT_NAME_LEN];

	struct c2port_ops *ops;

	struct mutex mutex;		/* prevent races during read/write */

	struct device *dev;

	void *private_data;

};

/* Basic operations */

struct c2port_ops {

	/* Flash layout */

	unsigned short block_size;	/* flash block size in bytes */

	unsigned short blocks_num;	/* flash blocks number */

	/* Enable or disable the access to C2 port */

	void (*access)(struct c2port_device *dev, int status);

	/* Set C2D data line as input/output */

	void (*c2d_dir)(struct c2port_device *dev, int dir);

	/* Read/write C2D data line */

	int (*c2d_get)(struct c2port_device *dev);

	void (*c2d_set)(struct c2port_device *dev, int status);

	/* Write C2CK clock line */

	void (*c2ck_set)(struct c2port_device *dev, int status);

};

/*

 * Exported functions

 */

#define to_class_dev(obj) container_of((obj), struct class_device, kobj)

#define to_c2port_device(obj) container_of((obj), struct c2port_device, class)

extern struct c2port_device *c2port_device_register(char *name,

					struct c2port_ops *ops, void *devdata);

extern void c2port_device_unregister(struct c2port_device *dev);