ACPI: simplify acpi_pci_irq_add_prt() API
[linux-2.6/linux-acpi-2.6.git] / include / linux / c2port.h
blob7b5a2388ba67412dda1740cf869950648668fd31
1 /*
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 #include <linux/device.h>
14 #define C2PORT_NAME_LEN 32
17 * C2 port basic structs
20 /* Main struct */
21 struct c2port_ops;
22 struct c2port_device {
23 unsigned int access:1;
24 unsigned int flash_access:1;
26 int id;
27 char name[C2PORT_NAME_LEN];
28 struct c2port_ops *ops;
29 struct mutex mutex; /* prevent races during read/write */
31 struct device *dev;
33 void *private_data;
36 /* Basic operations */
37 struct c2port_ops {
38 /* Flash layout */
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);
57 * Exported functions
60 #define to_class_dev(obj) container_of((obj), struct class_device, kobj)
61 #define to_c2port_device(obj) container_of((obj), struct c2port_device, class)
63 extern struct c2port_device *c2port_device_register(char *name,
64 struct c2port_ops *ops, void *devdata);
65 extern void c2port_device_unregister(struct c2port_device *dev);