drivers/staging/comedi/drivers/ni_labpc.h

   1 /*
   2     ni_labpc.h
   3
   4     Header for ni_labpc.c and ni_labpc_cs.c
   5
   6     Copyright (C) 2003 Frank Mori Hess <fmhess@users.sourceforge.net>
   7
   8     This program is free software; you can redistribute it and/or modify
   9     it under the terms of the GNU General Public License as published by
  10     the Free Software Foundation; either version 2 of the License, or
  11     (at your option) any later version.
  12
  13     This program is distributed in the hope that it will be useful,
  14     but WITHOUT ANY WARRANTY; without even the implied warranty of
  15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16     GNU General Public License for more details.
  17
  18     You should have received a copy of the GNU General Public License
  19     along with this program; if not, write to the Free Software
  20     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21
  22 */
  23
  24 #ifndef _NI_LABPC_H
  25 #define _NI_LABPC_H
  26
  27 #define EEPROM_SIZE     256     /*  256 byte eeprom */
  28 #define NUM_AO_CHAN     2       /*  boards have two analog output channels */
  29
  30 enum labpc_register_layout { labpc_plus_layout, labpc_1200_layout };
  31 enum transfer_type { fifo_not_empty_transfer, fifo_half_full_transfer,
  32         isa_dma_transfer
  33 };
  34
  35 struct labpc_boardinfo {
  36         const char *name;
  37         int device_id;          /*  device id for pci and pcmcia boards */
  38         int ai_speed;           /*  maximum input speed in nanoseconds */
  39
  40         /*  1200 has extra registers compared to pc+ */
  41         enum labpc_register_layout register_layout;
  42         int has_ao;             /*  has analog output true/false */
  43         const struct comedi_lrange *ai_range_table;
  44         const int *ai_range_code;
  45
  46         /*  board can auto scan up in ai channels, not just down */
  47         unsigned ai_scan_up:1;
  48
  49         /* uses memory mapped io instead of ioports */
  50         unsigned has_mmio:1;
  51 };
  52
  53 struct labpc_private {
  54         struct mite_struct *mite;       /*  for mite chip on pci-1200 */
  55         /*  number of data points left to be taken */
  56         unsigned long long count;
  57         /*  software copy of analog output values */
  58         unsigned int ao_value[NUM_AO_CHAN];
  59         /*  software copys of bits written to command registers */
  60         unsigned int cmd1;
  61         unsigned int cmd2;
  62         unsigned int cmd3;
  63         unsigned int cmd4;
  64         unsigned int cmd5;
  65         unsigned int cmd6;
  66         /*  store last read of board status registers */
  67         unsigned int stat1;
  68         unsigned int stat2;
  69         /*
  70          * value to load into board's counter a0 (conversion pacing) for timed
  71          * conversions
  72          */
  73         unsigned int divisor_a0;
  74         /*
  75          * value to load into board's counter b0 (master) for timed conversions
  76          */
  77         unsigned int divisor_b0;
  78         /*
  79          * value to load into board's counter b1 (scan pacing) for timed
  80          * conversions
  81          */
  82         unsigned int divisor_b1;
  83         unsigned int dma_chan;  /*  dma channel to use */
  84         u16 *dma_buffer;        /*  buffer ai will dma into */
  85         /* transfer size in bytes for current transfer */
  86         unsigned int dma_transfer_size;
  87         /* we are using dma/fifo-half-full/etc. */
  88         enum transfer_type current_transfer;
  89         /* stores contents of board's eeprom */
  90         unsigned int eeprom_data[EEPROM_SIZE];
  91         /* stores settings of calibration dacs */
  92         unsigned int caldac[16];
  93         /*
  94          * function pointers so we can use inb/outb or readb/writeb as
  95          * appropriate
  96          */
  97         unsigned int (*read_byte) (unsigned long address);
  98         void (*write_byte) (unsigned int byte, unsigned long address);
  99 };
 100
 101 int labpc_common_attach(struct comedi_device *dev,
 102                         unsigned int irq, unsigned long isr_flags);
 103 void labpc_common_detach(struct comedi_device *dev);
 104
 105 extern const int labpc_1200_ai_gain_bits[];
 106 extern const struct comedi_lrange range_labpc_1200_ai;
 107
 108 #endif /* _NI_LABPC_H */