mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 21:56:40 +07:00
0826374bff
Add multiplexed bus core support. I2C multiplexer and switches like pca954x get instantiated as new adapters per port. Signed-off-by: Michael Lawnick <ml.lawnick@gmx.de> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Jean Delvare <khali@linux-fr.org>
47 lines
1.6 KiB
C
47 lines
1.6 KiB
C
/*
|
|
*
|
|
* 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., 675 Mass Ave, Cambridge, MA 02139, 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,
|
|
void *mux_dev, 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));
|
|
|
|
int i2c_del_mux_adapter(struct i2c_adapter *adap);
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _LINUX_I2C_MUX_H */
|