include/asm-arm/arch-pxa/fsi.h

   1 /* H5400 Fingerprint Sensor Interface driver
   2  * Copyright (c) 2004 and 2005 J°rgen Andreas Michaelsen <jorgenam@ifi.uio.no>
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version
   7  * 2 of the License, or (at your option) any later version.
   8  */
   9 #ifndef _FSI_H_
  10 #define _FSI_H_
  11
  12 #define FSI_FRAME_SIZE                    281 /* words */
  13
  14 #define ASIC_FSI_Data32                   ASIC_REGISTER( u32, FSI, Data )
  15 #undef  ASIC_FSI_Data
  16
  17 #define FSI_CMD_MODE_STOP                 0x00
  18 #define FSI_CMD_MODE_START                0x01
  19 #define FSI_CMD_MODE_NAP                  0x02
  20 #define FSI_CMD_STOP_ACQ_INT              0x10
  21 #define FSI_CMD_START_ACQ_INT             0x11
  22 #define FSI_CMD_STOP_INFO_INT             0x14
  23 #define FSI_CMD_START_INFO_INT            0x15
  24 #define FSI_CMD_RESET                     0x20
  25 #define FSI_CMD_START_TEMP                0x30
  26 #define FSI_CMD_STOP_TEMP                 0x31
  27
  28 #define FSI_DB1_EVEN(x)                   (x&0xF)
  29 #define FSI_DB1_ODD(x)                    ((x>>4)&0xF)
  30 #define FSI_DB2_EVEN(x)                   ((x>>8)&0xF)
  31 #define FSI_DB2_ODD(x)                    ((x>>12)&0xF)
  32 #define FSI_DB3_EVEN(x)                   ((x>>16)&0xF)
  33 #define FSI_DB3_ODD(x)                    ((x>>20)&0xF)
  34 #define FSI_DB4_EVEN(x)                   ((x>>24)&0xF)
  35 #define FSI_DB4_ODD(x)                    ((x>>28)&0xF)
  36
  37 #define FSI_CONTROL_TEMP                  (1<<2)
  38
  39 #define FSI_IOC_MAGIC                     0x81
  40 #define FSI_IOCSTOPTEMP                   _IO(FSI_IOC_MAGIC, 1)
  41 #define FSI_IOCSTARTTEMP                  _IO(FSI_IOC_MAGIC, 2)
  42 #define FSI_IOCINCTEMP                    _IO(FSI_IOC_MAGIC, 3)
  43 #define FSI_IOCSETPRESCALE                _IO(FSI_IOC_MAGIC, 4)
  44 #define FSI_IOCSETDMI                     _IO(FSI_IOC_MAGIC, 5)
  45 #define FSI_IOCSETTRESHOLDON              _IO(FSI_IOC_MAGIC, 6)
  46 #define FSI_IOCSETTRESHOLDOFF             _IO(FSI_IOC_MAGIC, 7)
  47
  48 struct fsi_read_state
  49 {
  50         unsigned long *buffer;                  /* destination for data read from FIFO (circular buffer) */
  51         unsigned int buffer_size;               /* circular buffer size */
  52         unsigned int write_pos;                 /* used by circular buffer producer */
  53         unsigned int read_pos;                  /* used by circular buffer consumer */
  54         unsigned int word_count;                /* how many words read so far (written to user) */
  55         unsigned int word_dest;                 /* how many words we should read */
  56
  57         unsigned int frame_number;
  58         unsigned int frame_offset;
  59
  60         unsigned char do_read;                  /* true if valid data (copy to user) */
  61         unsigned char finished;
  62
  63         unsigned int treshold_on;               /* level for deciding when finger is present */
  64         unsigned int treshold_off;              /* level for deciding when finger is removed */
  65         unsigned char detect_count;             /* another (second) treshold */
  66         unsigned char finger_present;           /* true if finger is present on scanner */
  67         unsigned int detect_value;
  68 };
  69
  70 #endif /* _FSI_H_ */