cgbc.h

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * Congatec Board Controller driver definitions
 4 *
 5 * Copyright (C) 2024 Bootlin
 6 * Author: Thomas Richard <thomas.richard@bootlin.com>
 7 */
 8
 9#ifndef _LINUX_MFD_CGBC_H_
10
11/**
12 * struct cgbc_version - Board Controller device version structure
13 * @feature:	Board Controller feature number
14 * @major:	Board Controller major revision
15 * @minor:	Board Controller minor revision
16 */
17struct cgbc_version {
18	unsigned char feature;
19	unsigned char major;
20	unsigned char minor;
21};
22
23/**
24 * struct cgbc_device_data - Internal representation of the Board Controller device
25 * @io_session:		Pointer to the session IO memory
26 * @io_cmd:		Pointer to the command IO memory
27 * @session:		Session id returned by the Board Controller
28 * @dev:		Pointer to kernel device structure
29 * @cgbc_version:	Board Controller version structure
30 * @mutex:		Board Controller mutex
31 */
32struct cgbc_device_data {
33	void __iomem		*io_session;
34	void __iomem		*io_cmd;
35	u8			session;
36	struct device		*dev;
37	struct cgbc_version	version;
38	struct mutex		lock;
39};
40
41int cgbc_command(struct cgbc_device_data *cgbc, void *cmd, unsigned int cmd_size,
42		 void *data, unsigned int data_size, u8 *status);
43
44#endif /*_LINUX_MFD_CGBC_H_*/