i2c-mux.h 1.6 KB

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  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. #ifndef _LINUX_I2C_MUX_H
  25. #define _LINUX_I2C_MUX_H
  26. #ifdef __KERNEL__
  27. /*
  28. * Called to create a i2c bus on a multiplexed bus segment.
  29. * The mux_dev and chan_id parameters are passed to the select
  30. * and deselect callback functions to perform hardware-specific
  31. * mux control.
  32. */
  33. struct i2c_adapter *i2c_add_mux_adapter(struct i2c_adapter *parent,
  34. struct device *mux_dev,
  35. void *mux_priv, u32 force_nr, u32 chan_id,
  36. int (*select) (struct i2c_adapter *,
  37. void *mux_dev, u32 chan_id),
  38. int (*deselect) (struct i2c_adapter *,
  39. void *mux_dev, u32 chan_id));
  40. int i2c_del_mux_adapter(struct i2c_adapter *adap);
  41. #endif /* __KERNEL__ */
  42. #endif /* _LINUX_I2C_MUX_H */