/* *  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>#include <linux/kmemcheck.h> #define C2PORT_NAME_LEN			32 /* * C2 port basic structs */ /* Main struct */struct c2port_ops;struct c2port_device {	kmemcheck_bitfield_begin(flags);	unsigned int access:1;	unsigned int flash_access:1;	kmemcheck_bitfield_end(flags); 	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 */ extern struct c2port_device *c2port_device_register(char *name,					struct c2port_ops *ops, void *devdata);extern void c2port_device_unregister(struct c2port_device *dev);