1/* 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 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 22 * MA 02110-1301 USA. 23 */ 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, 37 struct device *mux_dev, 38 void *mux_priv, u32 force_nr, u32 chan_id, 39 unsigned int class, 40 int (*select) (struct i2c_adapter *, 41 void *mux_dev, u32 chan_id), 42 int (*deselect) (struct i2c_adapter *, 43 void *mux_dev, u32 chan_id)); 44 45void i2c_del_mux_adapter(struct i2c_adapter *adap); 46 47#endif /* __KERNEL__ */ 48 49#endif /* _LINUX_I2C_MUX_H */ 50