1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 *  Silicon Labs C2 port Linux support
 4 *
 5 *  Copyright (c) 2007 Rodolfo Giometti <giometti@linux.it>
 6 *  Copyright (c) 2007 Eurotech S.p.A. <info@eurotech.it>
 
 
 
 
 7 */
 8
 
 
 9#define C2PORT_NAME_LEN			32
10
11struct device;
12
13/*
14 * C2 port basic structs
15 */
16
17/* Main struct */
18struct c2port_ops;
19struct c2port_device {
 
20	unsigned int access:1;
21	unsigned int flash_access:1;
 
22
23	int id;
24	char name[C2PORT_NAME_LEN];
25	struct c2port_ops *ops;
26	struct mutex mutex;		/* prevent races during read/write */
27
28	struct device *dev;
29
30	void *private_data;
31};
32
33/* Basic operations */
34struct c2port_ops {
35	/* Flash layout */
36	unsigned short block_size;	/* flash block size in bytes */
37	unsigned short blocks_num;	/* flash blocks number */
38
39	/* Enable or disable the access to C2 port */
40	void (*access)(struct c2port_device *dev, int status);
41
42	/* Set C2D data line as input/output */
43	void (*c2d_dir)(struct c2port_device *dev, int dir);
44
45	/* Read/write C2D data line */
46	int (*c2d_get)(struct c2port_device *dev);
47	void (*c2d_set)(struct c2port_device *dev, int status);
48
49	/* Write C2CK clock line */
50	void (*c2ck_set)(struct c2port_device *dev, int status);
51};
52
53/*
54 * Exported functions
55 */
56
57extern struct c2port_device *c2port_device_register(char *name,
58					struct c2port_ops *ops, void *devdata);
59extern void c2port_device_unregister(struct c2port_device *dev);

 
 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
12#include <linux/kmemcheck.h>
13
14#define C2PORT_NAME_LEN			32
15
16struct device;
17
18/*
19 * C2 port basic structs
20 */
21
22/* Main struct */
23struct c2port_ops;
24struct c2port_device {
25	kmemcheck_bitfield_begin(flags);
26	unsigned int access:1;
27	unsigned int flash_access:1;
28	kmemcheck_bitfield_end(flags);
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 */
41struct 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
64extern struct c2port_device *c2port_device_register(char *name,
65					struct c2port_ops *ops, void *devdata);
66extern void c2port_device_unregister(struct c2port_device *dev);