drivers/cbus/user_retu_tahvo.h

   1 /**
   2  * drivers/cbus/user_retu_tahvo.h
   3  *
   4  * Copyright (C) 2004, 2005 Nokia Corporation
   5  *
   6  * Written by Mikko Ylinen <mikko.k.ylinen@nokia.com>
   7  *
   8  * Definitions and types used by both retu-user and tahvo-user.
   9  *
  10  * This file is subject to the terms and conditions of the GNU General
  11  * Public License. See the file "COPYING" in the main directory of this
  12  * archive for more details.
  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #ifndef _USER_RETU_TAHVO_H
  25 #define _USER_RETU_TAHVO_H
  26
  27 /* Chip IDs */
  28 #define CHIP_RETU       1
  29 #define CHIP_TAHVO      2
  30
  31 /* Register access type bits */
  32 #define READ_ONLY               1
  33 #define WRITE_ONLY              2
  34 #define READ_WRITE              3
  35 #define TOGGLE                  4
  36
  37 #define MASK(field)             ((u16)(field & 0xFFFF))
  38 #define REG(field)              ((u16)((field >> 16) & 0x3F))
  39
  40 /*** IOCTL definitions. These should be kept in sync with user space **********/
  41
  42 #define URT_IOC_MAGIC '`'
  43
  44 /*
  45  * IOCTL function naming conventions:
  46  * ==================================
  47  *  0 -- No argument and return value
  48  *  S -- Set through a pointer
  49  *  T -- Tell directly with the argument value
  50  *  G -- Reply by setting through a pointer
  51  *  Q -- response is on the return value
  52  *  X -- S and G atomically
  53  *  H -- T and Q atomically
  54  */
  55
  56 /* General */
  57 #define URT_IOCT_IRQ_SUBSCR             _IO(URT_IOC_MAGIC, 0)
  58
  59 /* RETU */
  60 #define RETU_IOCH_READ                  _IO(URT_IOC_MAGIC, 1)
  61 #define RETU_IOCX_WRITE                 _IO(URT_IOC_MAGIC, 2)
  62 #define RETU_IOCH_ADC_READ              _IO(URT_IOC_MAGIC, 3)
  63
  64 /* TAHVO */
  65 #define TAHVO_IOCH_READ                 _IO(URT_IOC_MAGIC, 4)
  66 #define TAHVO_IOCX_WRITE                _IO(URT_IOC_MAGIC, 5)
  67
  68 /* This structure is used for writing RETU/TAHVO registers */
  69 struct retu_tahvo_write_parms {
  70     u32 field;
  71     u16 value;
  72     u8  result;
  73 };
  74
  75 #endif