1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Silicon Labs C2 port Linux support
5 * Copyright (c) 2007 Rodolfo Giometti <giometti@linux.it>
6 * Copyright (c) 2007 Eurotech S.p.A. <info@eurotech.it>
9 #define C2PORT_NAME_LEN 32
14 * C2 port basic structs
19 struct c2port_device {
20 unsigned int access:1;
21 unsigned int flash_access:1;
24 char name[C2PORT_NAME_LEN];
25 struct c2port_ops *ops;
26 struct mutex mutex; /* prevent races during read/write */
33 /* Basic operations */
36 unsigned short block_size; /* flash block size in bytes */
37 unsigned short blocks_num; /* flash blocks number */
39 /* Enable or disable the access to C2 port */
40 void (*access)(struct c2port_device *dev, int status);
42 /* Set C2D data line as input/output */
43 void (*c2d_dir)(struct c2port_device *dev, int dir);
45 /* Read/write C2D data line */
46 int (*c2d_get)(struct c2port_device *dev);
47 void (*c2d_set)(struct c2port_device *dev, int status);
49 /* Write C2CK clock line */
50 void (*c2ck_set)(struct c2port_device *dev, int status);
57 extern struct c2port_device *c2port_device_register(char *name,
58 struct c2port_ops *ops, void *devdata);
59 extern void c2port_device_unregister(struct c2port_device *dev);