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/* 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);