/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Header for ni_labpc ISA/PCMCIA/PCI drivers
 *
 * Copyright (C) 2003 Frank Mori Hess <fmhess@users.sourceforge.net>
 */

#ifndef _NI_LABPC_H
#define _NI_LABPC_H

enum transfer_type { fifo_not_empty_transfer, fifo_half_full_transfer,
        isa_dma_transfer
};

struct labpc_boardinfo {
        const char *name;
        int ai_speed;                   /* maximum input speed in ns */
        unsigned ai_scan_up:1;          /* can auto scan up in ai channels */
        unsigned has_ao:1;              /* has analog outputs */
        unsigned is_labpc1200:1;        /* has extra regs compared to pc+ */
};

struct labpc_private {
        struct comedi_isadma *dma;
        struct comedi_8254 *counter;

        /*  number of data points left to be taken */
        unsigned long long count;
        /*  software copys of bits written to command registers */
        unsigned int cmd1;
        unsigned int cmd2;
        unsigned int cmd3;
        unsigned int cmd4;
        unsigned int cmd5;
        unsigned int cmd6;
        /*  store last read of board status registers */
        unsigned int stat1;
        unsigned int stat2;

        /* we are using dma/fifo-half-full/etc. */
        enum transfer_type current_transfer;
        /*
         * function pointers so we can use inb/outb or readb/writeb as
         * appropriate
         */
        unsigned int (*read_byte)(struct comedi_device *dev, unsigned long reg);
        void (*write_byte)(struct comedi_device *dev,
                           unsigned int byte, unsigned long reg);
};

int labpc_common_attach(struct comedi_device *dev,
                        unsigned int irq, unsigned long isr_flags);
void labpc_common_detach(struct comedi_device *dev);

#endif /* _NI_LABPC_H */