linux/drivers/staging/comedi/drivers/ni_labpc.h
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   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * Header for ni_labpc ISA/PCMCIA/PCI drivers
   4 *
   5 * Copyright (C) 2003 Frank Mori Hess <fmhess@users.sourceforge.net>
   6 */
   7
   8#ifndef _NI_LABPC_H
   9#define _NI_LABPC_H
  10
  11enum transfer_type { fifo_not_empty_transfer, fifo_half_full_transfer,
  12        isa_dma_transfer
  13};
  14
  15struct labpc_boardinfo {
  16        const char *name;
  17        int ai_speed;                   /* maximum input speed in ns */
  18        unsigned ai_scan_up:1;          /* can auto scan up in ai channels */
  19        unsigned has_ao:1;              /* has analog outputs */
  20        unsigned is_labpc1200:1;        /* has extra regs compared to pc+ */
  21};
  22
  23struct labpc_private {
  24        struct comedi_isadma *dma;
  25        struct comedi_8254 *counter;
  26
  27        /*  number of data points left to be taken */
  28        unsigned long long count;
  29        /*  software copys of bits written to command registers */
  30        unsigned int cmd1;
  31        unsigned int cmd2;
  32        unsigned int cmd3;
  33        unsigned int cmd4;
  34        unsigned int cmd5;
  35        unsigned int cmd6;
  36        /*  store last read of board status registers */
  37        unsigned int stat1;
  38        unsigned int stat2;
  39
  40        /* we are using dma/fifo-half-full/etc. */
  41        enum transfer_type current_transfer;
  42        /*
  43         * function pointers so we can use inb/outb or readb/writeb as
  44         * appropriate
  45         */
  46        unsigned int (*read_byte)(struct comedi_device *dev, unsigned long reg);
  47        void (*write_byte)(struct comedi_device *dev,
  48                           unsigned int byte, unsigned long reg);
  49};
  50
  51int labpc_common_attach(struct comedi_device *dev,
  52                        unsigned int irq, unsigned long isr_flags);
  53void labpc_common_detach(struct comedi_device *dev);
  54
  55#endif /* _NI_LABPC_H */
  56