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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - include/linux/c2port.h
2 * Silicon Labs C2 port Linux support
4 * Copyright (c) 2007 Rodolfo Giometti <giometti@linux.it>
5 * Copyright (c) 2007 Eurotech S.p.A. <info@eurotech.it>
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
12 #define C2PORT_NAME_LEN 32
17 * C2 port basic structs
22 struct c2port_device
{
23 unsigned int access
:1;
24 unsigned int flash_access
:1;
27 char name
[C2PORT_NAME_LEN
];
28 struct c2port_ops
*ops
;
29 struct mutex mutex
; /* prevent races during read/write */
36 /* Basic operations */
39 unsigned short block_size
; /* flash block size in bytes */
40 unsigned short blocks_num
; /* flash blocks number */
42 /* Enable or disable the access to C2 port */
43 void (*access
)(struct c2port_device
*dev
, int status
);
45 /* Set C2D data line as input/output */
46 void (*c2d_dir
)(struct c2port_device
*dev
, int dir
);
48 /* Read/write C2D data line */
49 int (*c2d_get
)(struct c2port_device
*dev
);
50 void (*c2d_set
)(struct c2port_device
*dev
, int status
);
52 /* Write C2CK clock line */
53 void (*c2ck_set
)(struct c2port_device
*dev
, int status
);
60 extern struct c2port_device
*c2port_device_register(char *name
,
61 struct c2port_ops
*ops
, void *devdata
);
62 extern void c2port_device_unregister(struct c2port_device
*dev
);