include/linux/i2c/pca954x.h

   1 /*
   2  *
   3  * pca954x.h - I2C multiplexer/switch 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., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24
  25 #ifndef _LINUX_I2C_PCA954X_H
  26 #define _LINUX_I2C_PCA954X_H
  27
  28 /* Platform data for the PCA954x I2C multiplexers */
  29
  30 /* Per channel initialisation data:
  31  * @adap_id: bus number for the adapter. 0 = don't care
  32  * @deselect_on_exit: set this entry to 1, if your H/W needs deselection
  33  *                    of this channel after transaction.
  34  *
  35  */
  36 struct pca954x_platform_mode {
  37         int             adap_id;
  38         unsigned int    deselect_on_exit:1;
  39         unsigned int    class;
  40 };
  41
  42 /* Per mux/switch data, used with i2c_register_board_info */
  43 struct pca954x_platform_data {
  44         struct pca954x_platform_mode *modes;
  45         int num_modes;
  46 };
  47
  48 #endif /* _LINUX_I2C_PCA954X_H */