include/linux/mfd/janz.h

   1 /*
   2  * Common Definitions for Janz MODULbus devices
   3  *
   4  * Copyright (c) 2010 Ira W. Snyder <iws@ovro.caltech.edu>
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or (at your
   9  * option) any later version.
  10  */
  11
  12 #ifndef JANZ_H
  13 #define JANZ_H
  14
  15 struct janz_platform_data {
  16         /* MODULbus Module Number */
  17         unsigned int modno;
  18 };
  19
  20 /* PLX bridge chip onboard registers */
  21 struct janz_cmodio_onboard_regs {
  22         u8 unused1;
  23
  24         /*
  25          * Read access: interrupt status
  26          * Write access: interrupt disable
  27          */
  28         u8 int_disable;
  29         u8 unused2;
  30
  31         /*
  32          * Read access: MODULbus number (hex switch)
  33          * Write access: interrupt enable
  34          */
  35         u8 int_enable;
  36         u8 unused3;
  37
  38         /* write-only */
  39         u8 reset_assert;
  40         u8 unused4;
  41
  42         /* write-only */
  43         u8 reset_deassert;
  44         u8 unused5;
  45
  46         /* read-write access to serial EEPROM */
  47         u8 eep;
  48         u8 unused6;
  49
  50         /* write-only access to EEPROM chip select */
  51         u8 enid;
  52 };
  53
  54 #endif /* JANZ_H */