diff options
Diffstat (limited to 'include/i2c/i2c-mux.h')
| -rw-r--r-- | include/i2c/i2c-mux.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/include/i2c/i2c-mux.h b/include/i2c/i2c-mux.h new file mode 100644 index 0000000000..80223996da --- /dev/null +++ b/include/i2c/i2c-mux.h @@ -0,0 +1,40 @@ +/* + * + * 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. + * + */ + +#ifndef _LINUX_I2C_MUX_H +#define _LINUX_I2C_MUX_H + +/* + * 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_d *mux_dev, + void *mux_priv, u32 force_nr, u32 chan_id, + 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 /* _LINUX_I2C_MUX_H */ |