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_bustype { isa_bustype, pci_bustype, pcmcia_bustype };
  31 enum labpc_register_layout { labpc_plus_layout, labpc_1200_layout };
  32 enum transfer_type { fifo_not_empty_transfer, fifo_half_full_transfer,
  33         isa_dma_transfer
  34 };
  35
  36 struct labpc_board_struct {
  37         const char *name;
  38         int device_id;          /*  device id for pci and pcmcia boards */
  39         int ai_speed;           /*  maximum input speed in nanoseconds */
  40         enum labpc_bustype bustype;     /*  ISA/PCI/etc. */
  41
  42         /*  1200 has extra registers compared to pc+ */
  43         enum labpc_register_layout register_layout;
  44         int has_ao;             /*  has analog output true/false */
  45         const struct comedi_lrange *ai_range_table;
  46         const int *ai_range_code;
  47         const int *ai_range_is_unipolar;
  48
  49         /*  board can auto scan up in ai channels, not just down */
  50         unsigned ai_scan_up:1;
  51
  52         /* uses memory mapped io instead of ioports */
  53         unsigned memory_mapped_io:1;
  54 };
  55
  56 struct labpc_private {
  57         struct mite_struct *mite;       /*  for mite chip on pci-1200 */
  58         /*  number of data points left to be taken */
  59         volatile unsigned long long count;
  60         /*  software copy of analog output values */
  61         unsigned int ao_value[NUM_AO_CHAN];
  62         /*  software copys of bits written to command registers */
  63         volatile unsigned int command1_bits;
  64         volatile unsigned int command2_bits;
  65         volatile unsigned int command3_bits;
  66         volatile unsigned int command4_bits;
  67         volatile unsigned int command5_bits;
  68         volatile unsigned int command6_bits;
  69         /*  store last read of board status registers */
  70         volatile unsigned int status1_bits;
  71         volatile unsigned int status2_bits;
  72         /*
  73          * value to load into board's counter a0 (conversion pacing) for timed
  74          * conversions
  75          */
  76         unsigned int divisor_a0;
  77         /*
  78          * value to load into board's counter b0 (master) for timed conversions
  79          */
  80         unsigned int divisor_b0;
  81         /*
  82          * value to load into board's counter b1 (scan pacing) for timed
  83          * conversions
  84          */
  85         unsigned int divisor_b1;
  86         unsigned int dma_chan;  /*  dma channel to use */
  87         u16 *dma_buffer;        /*  buffer ai will dma into */
  88         /* transfer size in bytes for current transfer */
  89         unsigned int dma_transfer_size;
  90         /* we are using dma/fifo-half-full/etc. */
  91         enum transfer_type current_transfer;
  92         /* stores contents of board's eeprom */
  93         unsigned int eeprom_data[EEPROM_SIZE];
  94         /* stores settings of calibration dacs */
  95         unsigned int caldac[16];
  96         /*
  97          * function pointers so we can use inb/outb or readb/writeb as
  98          * appropriate
  99          */
 100         unsigned int (*read_byte) (unsigned long address);
 101         void (*write_byte) (unsigned int byte, unsigned long address);
 102 };
 103
 104 int labpc_common_attach(struct comedi_device *dev, unsigned long iobase,
 105                         unsigned int irq, unsigned int dma);
 106 int labpc_common_detach(struct comedi_device *dev);
 107
 108 extern const int labpc_1200_is_unipolar[];
 109 extern const int labpc_1200_ai_gain_bits[];
 110 extern const struct comedi_lrange range_labpc_1200_ai;
 111
 112 #endif /* _NI_LABPC_H */