[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / c2port.h

/*
 *  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/kmemcheck.h>

#define C2PORT_NAME_LEN			32

struct device;

/*
 * 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);
Commit	Line	Data
4e17e1db RG	1	/*
	2	* Silicon Labs C2 port Linux support
	3	*
	4	* Copyright (c) 2007 Rodolfo Giometti <giometti@linux.it>
	5	* Copyright (c) 2007 Eurotech S.p.A. <info@eurotech.it>
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License version 2 as published by
	9	* the Free Software Foundation
	10	*/
	11
c53bd2e1	12	#include <linux/kmemcheck.h>
4e17e1db RG	13
	14	#define C2PORT_NAME_LEN 32
	15
313162d0 PG	16	struct device;
313162d0 PG	17
4e17e1db RG	18	/*
	19	* C2 port basic structs
	20	*/
	21
	22	/* Main struct */
	23	struct c2port_ops;
	24	struct c2port_device {
c53bd2e1	25	kmemcheck_bitfield_begin(flags);
4e17e1db RG	26	unsigned int access:1;
4e17e1db RG	27	unsigned int flash_access:1;
c53bd2e1	28	kmemcheck_bitfield_end(flags);
4e17e1db RG	29
	30	int id;
	31	char name[C2PORT_NAME_LEN];
	32	struct c2port_ops *ops;
	33	struct mutex mutex; /* prevent races during read/write */
	34
	35	struct device *dev;
	36
	37	void *private_data;
	38	};
	39
	40	/* Basic operations */
	41	struct c2port_ops {
	42	/* Flash layout */
	43	unsigned short block_size; /* flash block size in bytes */
	44	unsigned short blocks_num; /* flash blocks number */
	45
	46	/* Enable or disable the access to C2 port */
	47	void (access)(struct c2port_device dev, int status);
	48
	49	/* Set C2D data line as input/output */
	50	void (c2d_dir)(struct c2port_device dev, int dir);
	51
	52	/* Read/write C2D data line */
	53	int (c2d_get)(struct c2port_device dev);
	54	void (c2d_set)(struct c2port_device dev, int status);
	55
	56	/* Write C2CK clock line */
	57	void (c2ck_set)(struct c2port_device dev, int status);
	58	};
	59
	60	/*
	61	* Exported functions
	62	*/
	63
4e17e1db RG	64	extern struct c2port_device c2port_device_register(char name,
	65	struct c2port_ops ops, void devdata);
	66	extern void c2port_device_unregister(struct c2port_device *dev);