summaryrefslogblamecommitdiff
path: root/include/linux/i2c-mux.h
blob: b5f9a007a3abdd9216aa02bcd06479ffae20bd4b (plain) (tree) 
0826374bff57 ^




















5694f8a888f8 ^


0826374bff57 ^














5a3ecd5f9877 ^


eee543e82481 ^

0826374bff57 ^





51d95709dddf ^

0826374bff57 ^




1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22

23
24
25
26
27
28
29
30
31
32
33
34
35
36

37
38

39

40
41
42
43
44

45

46
47
48
49




















                                                                       

                                                             













                                                                   

                                                                          
                                                   




                                                                              
                                                   



                             
/*
 *
 * i2c-mux.h - functions for the i2c-bus mux support
 *
 * Copyright (c) 2008-2009 Rodolfo Giometti <giometti@linux.it>
 * Copyright (c) 2008-2009 Eurotech S.p.A. <info@eurotech.it>
 * Michael Lawnick <michael.lawnick.ext@nsn.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301 USA.
 */

#ifndef _LINUX_I2C_MUX_H
#define _LINUX_I2C_MUX_H

#ifdef __KERNEL__

/*
 * Called to create a i2c bus on a multiplexed bus segment.
 * The mux_dev and chan_id parameters are passed to the select
 * and deselect callback functions to perform hardware-specific
 * mux control.
 */
struct i2c_adapter *i2c_add_mux_adapter(struct i2c_adapter *parent,
				struct device *mux_dev,
				void *mux_priv, u32 force_nr, u32 chan_id,
				unsigned int class,
				int (*select) (struct i2c_adapter *,
					       void *mux_dev, u32 chan_id),
				int (*deselect) (struct i2c_adapter *,
						 void *mux_dev, u32 chan_id));

void i2c_del_mux_adapter(struct i2c_adapter *adap);

#endif /* __KERNEL__ */

#endif /* _LINUX_I2C_MUX_H */