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Michael Lawnick08263742010-08-11 18:21:02 +02001/*
2 *
3 * i2c-mux.h - functions for the i2c-bus mux support
4 *
5 * Copyright (c) 2008-2009 Rodolfo Giometti <giometti@linux.it>
6 * Copyright (c) 2008-2009 Eurotech S.p.A. <info@eurotech.it>
7 * Michael Lawnick <michael.lawnick.ext@nsn.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
Jean Delvare5694f8a2012-03-26 21:47:19 +020021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
22 * MA 02110-1301 USA.
Michael Lawnick08263742010-08-11 18:21:02 +020023 */
24
25#ifndef _LINUX_I2C_MUX_H
26#define _LINUX_I2C_MUX_H
27
28#ifdef __KERNEL__
29
30/*
31 * Called to create a i2c bus on a multiplexed bus segment.
32 * The mux_dev and chan_id parameters are passed to the select
33 * and deselect callback functions to perform hardware-specific
34 * mux control.
35 */
36struct i2c_adapter *i2c_add_mux_adapter(struct i2c_adapter *parent,
David Daney5a3ecd52012-04-12 14:14:22 -070037 struct device *mux_dev,
38 void *mux_priv, u32 force_nr, u32 chan_id,
Michael Lawnick08263742010-08-11 18:21:02 +020039 int (*select) (struct i2c_adapter *,
40 void *mux_dev, u32 chan_id),
41 int (*deselect) (struct i2c_adapter *,
42 void *mux_dev, u32 chan_id));
43
44int i2c_del_mux_adapter(struct i2c_adapter *adap);
45
46#endif /* __KERNEL__ */
47
48#endif /* _LINUX_I2C_MUX_H */