cb_pcidda.c

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/*
    comedi/drivers/cb_pcidda.c
    This intends to be a driver for the ComputerBoards / MeasurementComputing
    PCI-DDA series.

     Copyright (C) 2001 Ivan Martinez <[email protected]>
    Copyright (C) 2001 Frank Mori Hess <[email protected]>

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 1997-8 David A. Schleef <[email protected]>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/
/*
Driver: cb_pcidda
Description: MeasurementComputing PCI-DDA series
Author: Ivan Martinez <[email protected]>, Frank Mori Hess <[email protected]>
Status: Supports 08/16, 04/16, 02/16, 08/12, 04/12, and 02/12
Devices: [Measurement Computing] PCI-DDA08/12 (cb_pcidda), PCI-DDA04/12,
  PCI-DDA02/12, PCI-DDA08/16, PCI-DDA04/16, PCI-DDA02/16

Configuration options:
  [0] - PCI bus of device (optional)
  [1] - PCI slot of device (optional)
  If bus/slot is not specified, the first available PCI
  device will be used.

Only simple analog output writing is supported.

So far it has only been tested with:
  - PCI-DDA08/12
Please report success/failure with other different cards to
<[email protected]>.
*/

#include "../comedidev.h"

#include "comedi_fc.h"
#include "8255.h"

/* PCI vendor number of ComputerBoards */
#define PCI_VENDOR_ID_CB        0x1307
#define EEPROM_SIZE 128 /*  number of entries in eeprom */
/* maximum number of ao channels for supported boards */
#define MAX_AO_CHANNELS 8

/* Digital I/O registers */
#define PORT1A 0        /*  PORT 1A DATA */

#define PORT1B 1        /*  PORT 1B DATA */

#define PORT1C 2        /*  PORT 1C DATA */

#define CONTROL1 3      /*  CONTROL REGISTER 1 */

#define PORT2A 4        /*  PORT 2A DATA */

#define PORT2B 5        /*  PORT 2B DATA */

#define PORT2C 6        /*  PORT 2C DATA */

#define CONTROL2 7      /*  CONTROL REGISTER 2 */

/* DAC registers */
#define DACONTROL   0   /*  D/A CONTROL REGISTER */
#define SU  0000001     /*  Simultaneous update enabled */
#define NOSU    0000000     /*  Simultaneous update disabled */
#define ENABLEDAC   0000002 /*  Enable specified DAC */
#define DISABLEDAC  0000000 /*  Disable specified DAC */
#define RANGE2V5    0000000 /*  2.5V */
#define RANGE5V 0000200     /*  5V */
#define RANGE10V    0000300 /*  10V */
#define UNIP    0000400     /*  Unipolar outputs */
#define BIP 0000000     /*  Bipolar outputs */

#define DACALIBRATION1  4   /*  D/A CALIBRATION REGISTER 1 */
/* write bits */
/* serial data input for eeprom, caldacs, reference dac */
#define SERIAL_IN_BIT   0x1
#define CAL_CHANNEL_MASK    (0x7 << 1)
#define CAL_CHANNEL_BITS(channel)   (((channel) << 1) & CAL_CHANNEL_MASK)
/* read bits */
#define CAL_COUNTER_MASK    0x1f
/* calibration counter overflow status bit */
#define CAL_COUNTER_OVERFLOW_BIT        0x20
/* analog output is less than reference dac voltage */
#define AO_BELOW_REF_BIT        0x40
#define SERIAL_OUT_BIT  0x80    /*  serial data out, for reading from eeprom */

#define DACALIBRATION2  6   /*  D/A CALIBRATION REGISTER 2 */
#define SELECT_EEPROM_BIT   0x1 /*  send serial data in to eeprom */
/* don't send serial data to MAX542 reference dac */
#define DESELECT_REF_DAC_BIT    0x2
/* don't send serial data to caldac n */
#define DESELECT_CALDAC_BIT(n)  (0x4 << (n))
/* manual says to set this bit with no explanation */
#define DUMMY_BIT       0x40

#define DADATA  8       /*  FIRST D/A DATA REGISTER (0) */

static const struct comedi_lrange cb_pcidda_ranges = {
    6,
    {
     BIP_RANGE(10),
     BIP_RANGE(5),
     BIP_RANGE(2.5),
     UNI_RANGE(10),
     UNI_RANGE(5),
     UNI_RANGE(2.5),
     }
};

/*
 * Board descriptions for two imaginary boards.  Describing the
 * boards in this way is optional, and completely driver-dependent.
 * Some drivers use arrays such as this, other do not.
 */
struct cb_pcidda_board {
    const char *name;
    char status;        /*  Driver status: */

    /*
     * 0 - tested
     * 1 - manual read, not tested
     * 2 - manual not read
     */

    unsigned short device_id;
    int ao_chans;
    int ao_bits;
    const struct comedi_lrange *ranges;
};

static const struct cb_pcidda_board cb_pcidda_boards[] = {
    {
     .name = "pci-dda02/12",
     .status = 1,
     .device_id = 0x20,
     .ao_chans = 2,
     .ao_bits = 12,
     .ranges = &cb_pcidda_ranges,
     },
    {
     .name = "pci-dda04/12",
     .status = 1,
     .device_id = 0x21,
     .ao_chans = 4,
     .ao_bits = 12,
     .ranges = &cb_pcidda_ranges,
     },
    {
     .name = "pci-dda08/12",
     .status = 0,
     .device_id = 0x22,
     .ao_chans = 8,
     .ao_bits = 12,
     .ranges = &cb_pcidda_ranges,
     },
    {
     .name = "pci-dda02/16",
     .status = 2,
     .device_id = 0x23,
     .ao_chans = 2,
     .ao_bits = 16,
     .ranges = &cb_pcidda_ranges,
     },
    {
     .name = "pci-dda04/16",
     .status = 2,
     .device_id = 0x24,
     .ao_chans = 4,
     .ao_bits = 16,
     .ranges = &cb_pcidda_ranges,
     },
    {
     .name = "pci-dda08/16",
     .status = 0,
     .device_id = 0x25,
     .ao_chans = 8,
     .ao_bits = 16,
     .ranges = &cb_pcidda_ranges,
     },
};

/*
 * this structure is for data unique to this hardware driver.  If
 * several hardware drivers keep similar information in this structure,
 * feel free to suggest moving the variable to the struct comedi_device
 * struct.
 */
struct cb_pcidda_private {
    int data;

    unsigned long digitalio;
    unsigned long dac;

    /* unsigned long control_status; */
    /* unsigned long adc_fifo; */

    /* bits last written to da calibration register 1 */
    unsigned int dac_cal1_bits;
    /* current range settings for output channels */
    unsigned int ao_range[MAX_AO_CHANNELS];
    u16 eeprom_data[EEPROM_SIZE];   /*  software copy of board's eeprom */
};

/*
 * I will program this later... ;-)
 */
#if 0
static int cb_pcidda_ai_cmd(struct comedi_device *dev,
                struct comedi_subdevice *s)
{
    printk("cb_pcidda_ai_cmd\n");
    printk("subdev: %d\n", cmd->subdev);
    printk("flags: %d\n", cmd->flags);
    printk("start_src: %d\n", cmd->start_src);
    printk("start_arg: %d\n", cmd->start_arg);
    printk("scan_begin_src: %d\n", cmd->scan_begin_src);
    printk("convert_src: %d\n", cmd->convert_src);
    printk("convert_arg: %d\n", cmd->convert_arg);
    printk("scan_end_src: %d\n", cmd->scan_end_src);
    printk("scan_end_arg: %d\n", cmd->scan_end_arg);
    printk("stop_src: %d\n", cmd->stop_src);
    printk("stop_arg: %d\n", cmd->stop_arg);
    printk("chanlist_len: %d\n", cmd->chanlist_len);
}
#endif

#if 0
static int cb_pcidda_ai_cmdtest(struct comedi_device *dev,
                struct comedi_subdevice *s,
                struct comedi_cmd *cmd)
{
    int err = 0;
    int tmp;

    /* Step 1 : check if triggers are trivially valid */

    err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
    err |= cfc_check_trigger_src(&cmd->scan_begin_src,
                    TRIG_TIMER | TRIG_EXT);
    err |= cfc_check_trigger_src(&cmd->convert_src,
                    TRIG_TIMER | TRIG_EXT);
    err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
    err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);

    if (err)
        return 1;

    /* Step 2a : make sure trigger sources are unique */

    err |= cfc_check_trigger_is_unique(cmd->scan_begin_src);
    err |= cfc_check_trigger_is_unique(cmd->convert_src);
    err |= cfc_check_trigger_is_unique(cmd->stop_src);

    /* Step 2b : and mutually compatible */

    if (err)
        return 2;

    /* step 3: make sure arguments are trivially compatible */

    if (cmd->start_arg != 0) {
        cmd->start_arg = 0;
        err++;
    }
#define MAX_SPEED   10000   /* in nanoseconds */
#define MIN_SPEED   1000000000  /* in nanoseconds */

    if (cmd->scan_begin_src == TRIG_TIMER) {
        if (cmd->scan_begin_arg < MAX_SPEED) {
            cmd->scan_begin_arg = MAX_SPEED;
            err++;
        }
        if (cmd->scan_begin_arg > MIN_SPEED) {
            cmd->scan_begin_arg = MIN_SPEED;
            err++;
        }
    } else {
        /* external trigger */
        /* should be level/edge, hi/lo specification here */
        /* should specify multiple external triggers */
        if (cmd->scan_begin_arg > 9) {
            cmd->scan_begin_arg = 9;
            err++;
        }
    }
    if (cmd->convert_src == TRIG_TIMER) {
        if (cmd->convert_arg < MAX_SPEED) {
            cmd->convert_arg = MAX_SPEED;
            err++;
        }
        if (cmd->convert_arg > MIN_SPEED) {
            cmd->convert_arg = MIN_SPEED;
            err++;
        }
    } else {
        /* external trigger */
        /* see above */
        if (cmd->convert_arg > 9) {
            cmd->convert_arg = 9;
            err++;
        }
    }

    if (cmd->scan_end_arg != cmd->chanlist_len) {
        cmd->scan_end_arg = cmd->chanlist_len;
        err++;
    }
    if (cmd->stop_src == TRIG_COUNT) {
        if (cmd->stop_arg > 0x00ffffff) {
            cmd->stop_arg = 0x00ffffff;
            err++;
        }
    } else {
        /* TRIG_NONE */
        if (cmd->stop_arg != 0) {
            cmd->stop_arg = 0;
            err++;
        }
    }

    if (err)
        return 3;

    /* step 4: fix up any arguments */

    if (cmd->scan_begin_src == TRIG_TIMER) {
        tmp = cmd->scan_begin_arg;
        cb_pcidda_ns_to_timer(&cmd->scan_begin_arg,
                      cmd->flags & TRIG_ROUND_MASK);
        if (tmp != cmd->scan_begin_arg)
            err++;
    }
    if (cmd->convert_src == TRIG_TIMER) {
        tmp = cmd->convert_arg;
        cb_pcidda_ns_to_timer(&cmd->convert_arg,
                      cmd->flags & TRIG_ROUND_MASK);
        if (tmp != cmd->convert_arg)
            err++;
        if (cmd->scan_begin_src == TRIG_TIMER &&
            cmd->scan_begin_arg <
            cmd->convert_arg * cmd->scan_end_arg) {
            cmd->scan_begin_arg =
                cmd->convert_arg * cmd->scan_end_arg;
            err++;
        }
    }

    if (err)
        return 4;

    return 0;
}
#endif

/* This function doesn't require a particular form, this is just
 * what happens to be used in some of the drivers.  It should
 * convert ns nanoseconds to a counter value suitable for programming
 * the device.  Also, it should adjust ns so that it cooresponds to
 * the actual time that the device will use. */
#if 0
static int cb_pcidda_ns_to_timer(unsigned int *ns, int round)
{
    /* trivial timer */
    return *ns;
}
#endif

/* lowlevel read from eeprom */
static unsigned int cb_pcidda_serial_in(struct comedi_device *dev)
{
    struct cb_pcidda_private *devpriv = dev->private;
    unsigned int value = 0;
    int i;
    const int value_width = 16; /*  number of bits wide values are */

    for (i = 1; i <= value_width; i++) {
        /*  read bits most significant bit first */
        if (inw_p(devpriv->dac + DACALIBRATION1) & SERIAL_OUT_BIT)
            value |= 1 << (value_width - i);
    }

    return value;
}

/* lowlevel write to eeprom/dac */
static void cb_pcidda_serial_out(struct comedi_device *dev, unsigned int value,
                 unsigned int num_bits)
{
    struct cb_pcidda_private *devpriv = dev->private;
    int i;

    for (i = 1; i <= num_bits; i++) {
        /*  send bits most significant bit first */
        if (value & (1 << (num_bits - i)))
            devpriv->dac_cal1_bits |= SERIAL_IN_BIT;
        else
            devpriv->dac_cal1_bits &= ~SERIAL_IN_BIT;
        outw_p(devpriv->dac_cal1_bits, devpriv->dac + DACALIBRATION1);
    }
}

/* reads a 16 bit value from board's eeprom */
static unsigned int cb_pcidda_read_eeprom(struct comedi_device *dev,
                      unsigned int address)
{
    struct cb_pcidda_private *devpriv = dev->private;
    unsigned int i;
    unsigned int cal2_bits;
    unsigned int value;
    /* one caldac for every two dac channels */
    const int max_num_caldacs = 4;
    /* bits to send to tell eeprom we want to read */
    const int read_instruction = 0x6;
    const int instruction_length = 3;
    const int address_length = 8;

    /*  send serial output stream to eeprom */
    cal2_bits = SELECT_EEPROM_BIT | DESELECT_REF_DAC_BIT | DUMMY_BIT;
    /*  deactivate caldacs (one caldac for every two channels) */
    for (i = 0; i < max_num_caldacs; i++)
        cal2_bits |= DESELECT_CALDAC_BIT(i);
    outw_p(cal2_bits, devpriv->dac + DACALIBRATION2);

    /*  tell eeprom we want to read */
    cb_pcidda_serial_out(dev, read_instruction, instruction_length);
    /*  send address we want to read from */
    cb_pcidda_serial_out(dev, address, address_length);

    value = cb_pcidda_serial_in(dev);

    /*  deactivate eeprom */
    cal2_bits &= ~SELECT_EEPROM_BIT;
    outw_p(cal2_bits, devpriv->dac + DACALIBRATION2);

    return value;
}

/* writes to 8 bit calibration dacs */
static void cb_pcidda_write_caldac(struct comedi_device *dev,
                   unsigned int caldac, unsigned int channel,
                   unsigned int value)
{
    struct cb_pcidda_private *devpriv = dev->private;
    unsigned int cal2_bits;
    unsigned int i;
    /* caldacs use 3 bit channel specification */
    const int num_channel_bits = 3;
    const int num_caldac_bits = 8;  /*  8 bit calibration dacs */
    /* one caldac for every two dac channels */
    const int max_num_caldacs = 4;

    /* write 3 bit channel */
    cb_pcidda_serial_out(dev, channel, num_channel_bits);
    /*  write 8 bit caldac value */
    cb_pcidda_serial_out(dev, value, num_caldac_bits);

/*
* latch stream into appropriate caldac deselect reference dac
*/
    cal2_bits = DESELECT_REF_DAC_BIT | DUMMY_BIT;
    /*  deactivate caldacs (one caldac for every two channels) */
    for (i = 0; i < max_num_caldacs; i++)
        cal2_bits |= DESELECT_CALDAC_BIT(i);
    /*  activate the caldac we want */
    cal2_bits &= ~DESELECT_CALDAC_BIT(caldac);
    outw_p(cal2_bits, devpriv->dac + DACALIBRATION2);
    /*  deactivate caldac */
    cal2_bits |= DESELECT_CALDAC_BIT(caldac);
    outw_p(cal2_bits, devpriv->dac + DACALIBRATION2);
}

/* returns caldac that calibrates given analog out channel */
static unsigned int caldac_number(unsigned int channel)
{
    return channel / 2;
}

/* returns caldac channel that provides fine gain for given ao channel */
static unsigned int fine_gain_channel(unsigned int ao_channel)
{
    return 4 * (ao_channel % 2);
}

/* returns caldac channel that provides coarse gain for given ao channel */
static unsigned int coarse_gain_channel(unsigned int ao_channel)
{
    return 1 + 4 * (ao_channel % 2);
}

/* returns caldac channel that provides coarse offset for given ao channel */
static unsigned int coarse_offset_channel(unsigned int ao_channel)
{
    return 2 + 4 * (ao_channel % 2);
}

/* returns caldac channel that provides fine offset for given ao channel */
static unsigned int fine_offset_channel(unsigned int ao_channel)
{
    return 3 + 4 * (ao_channel % 2);
}

/* returns eeprom address that provides offset for given ao channel and range */
static unsigned int offset_eeprom_address(unsigned int ao_channel,
                      unsigned int range)
{
    return 0x7 + 2 * range + 12 * ao_channel;
}

/*
 * returns eeprom address that provides gain calibration for given ao
 * channel and range
 */
static unsigned int gain_eeprom_address(unsigned int ao_channel,
                    unsigned int range)
{
    return 0x8 + 2 * range + 12 * ao_channel;
}

/*
 * returns upper byte of eeprom entry, which gives the coarse adjustment
 * values
 */
static unsigned int eeprom_coarse_byte(unsigned int word)
{
    return (word >> 8) & 0xff;
}

/* returns lower byte of eeprom entry, which gives the fine adjustment values */
static unsigned int eeprom_fine_byte(unsigned int word)
{
    return word & 0xff;
}

/* set caldacs to eeprom values for given channel and range */
static void cb_pcidda_calibrate(struct comedi_device *dev, unsigned int channel,
                unsigned int range)
{
    struct cb_pcidda_private *devpriv = dev->private;
    unsigned int coarse_offset, fine_offset, coarse_gain, fine_gain;

    /* remember range so we can tell when we need to readjust calibration */
    devpriv->ao_range[channel] = range;

    /*  get values from eeprom data */
    coarse_offset =
        eeprom_coarse_byte(devpriv->eeprom_data
                   [offset_eeprom_address(channel, range)]);
    fine_offset =
        eeprom_fine_byte(devpriv->eeprom_data
                 [offset_eeprom_address(channel, range)]);
    coarse_gain =
        eeprom_coarse_byte(devpriv->eeprom_data
                   [gain_eeprom_address(channel, range)]);
    fine_gain =
        eeprom_fine_byte(devpriv->eeprom_data
                 [gain_eeprom_address(channel, range)]);

    /*  set caldacs */
    cb_pcidda_write_caldac(dev, caldac_number(channel),
                   coarse_offset_channel(channel), coarse_offset);
    cb_pcidda_write_caldac(dev, caldac_number(channel),
                   fine_offset_channel(channel), fine_offset);
    cb_pcidda_write_caldac(dev, caldac_number(channel),
                   coarse_gain_channel(channel), coarse_gain);
    cb_pcidda_write_caldac(dev, caldac_number(channel),
                   fine_gain_channel(channel), fine_gain);
}

static int cb_pcidda_ao_winsn(struct comedi_device *dev,
                  struct comedi_subdevice *s,
                  struct comedi_insn *insn, unsigned int *data)
{
    struct cb_pcidda_private *devpriv = dev->private;
    unsigned int command;
    unsigned int channel, range;

    channel = CR_CHAN(insn->chanspec);
    range = CR_RANGE(insn->chanspec);

    /*  adjust calibration dacs if range has changed */
    if (range != devpriv->ao_range[channel])
        cb_pcidda_calibrate(dev, channel, range);

    /* output channel configuration */
    command = NOSU | ENABLEDAC;

    /* output channel range */
    switch (range) {
    case 0:
        command |= BIP | RANGE10V;
        break;
    case 1:
        command |= BIP | RANGE5V;
        break;
    case 2:
        command |= BIP | RANGE2V5;
        break;
    case 3:
        command |= UNIP | RANGE10V;
        break;
    case 4:
        command |= UNIP | RANGE5V;
        break;
    case 5:
        command |= UNIP | RANGE2V5;
        break;
    }

    /* output channel specification */
    command |= channel << 2;
    outw(command, devpriv->dac + DACONTROL);

    /* write data */
    outw(data[0], devpriv->dac + DADATA + channel * 2);

    /* return the number of samples read/written */
    return 1;
}

static const void *cb_pcidda_find_boardinfo(struct comedi_device *dev,
                        struct pci_dev *pcidev)
{
    const struct cb_pcidda_board *thisboard;
    int i;

    for (i = 0; i < ARRAY_SIZE(cb_pcidda_boards); i++) {
        thisboard = &cb_pcidda_boards[i];
        if (thisboard->device_id != pcidev->device)
            return thisboard;
    }
    return NULL;
}

static int cb_pcidda_attach_pci(struct comedi_device *dev,
                struct pci_dev *pcidev)
{
    const struct cb_pcidda_board *thisboard;
    struct cb_pcidda_private *devpriv;
    struct comedi_subdevice *s;
    int index;
    int ret;

    comedi_set_hw_dev(dev, &pcidev->dev);

    thisboard = cb_pcidda_find_boardinfo(dev, pcidev);
    if (!pcidev)
        return -ENODEV;
    dev->board_ptr = thisboard;
    dev->board_name = thisboard->name;

    ret = alloc_private(dev, sizeof(*devpriv));
    if (ret)
        return ret;
    devpriv = dev->private;

    ret = comedi_pci_enable(pcidev, dev->board_name);
    if (ret)
        return ret;

    devpriv->digitalio = pci_resource_start(pcidev, 2);
    devpriv->dac = pci_resource_start(pcidev, 3);
    dev->iobase = devpriv->dac;

    if (thisboard->status == 2)
        printk
            ("WARNING: DRIVER FOR THIS BOARD NOT CHECKED WITH MANUAL. "
             "WORKS ASSUMING FULL COMPATIBILITY WITH PCI-DDA08/12. "
             "PLEASE REPORT USAGE TO <[email protected]>.\n");

    ret = comedi_alloc_subdevices(dev, 3);
    if (ret)
        return ret;

    s = &dev->subdevices[0];
    /* analog output subdevice */
    s->type = COMEDI_SUBD_AO;
    s->subdev_flags = SDF_WRITABLE;
    s->n_chan = thisboard->ao_chans;
    s->maxdata = (1 << thisboard->ao_bits) - 1;
    s->range_table = thisboard->ranges;
    s->insn_write = cb_pcidda_ao_winsn;

    /* s->subdev_flags |= SDF_CMD_READ; */
    /* s->do_cmd = cb_pcidda_ai_cmd; */
    /* s->do_cmdtest = cb_pcidda_ai_cmdtest; */

    /*  two 8255 digital io subdevices */
    s = &dev->subdevices[1];
    subdev_8255_init(dev, s, NULL, devpriv->digitalio);
    s = &dev->subdevices[2];
    subdev_8255_init(dev, s, NULL, devpriv->digitalio + PORT2A);

    dev_dbg(dev->class_dev, "eeprom:\n");
    for (index = 0; index < EEPROM_SIZE; index++) {
        devpriv->eeprom_data[index] = cb_pcidda_read_eeprom(dev, index);
        dev_dbg(dev->class_dev, "%i:0x%x\n", index,
            devpriv->eeprom_data[index]);
    }

    /*  set calibrations dacs */
    for (index = 0; index < thisboard->ao_chans; index++)
        cb_pcidda_calibrate(dev, index, devpriv->ao_range[index]);

    dev_info(dev->class_dev, "%s attached\n", dev->board_name);

    return 0;
}

static void cb_pcidda_detach(struct comedi_device *dev)
{
    struct pci_dev *pcidev = comedi_to_pci_dev(dev);

    if (dev->subdevices) {
        subdev_8255_cleanup(dev, &dev->subdevices[1]);
        subdev_8255_cleanup(dev, &dev->subdevices[2]);
    }
    if (pcidev) {
        if (dev->iobase)
            comedi_pci_disable(pcidev);
    }
}

static struct comedi_driver cb_pcidda_driver = {
    .driver_name    = "cb_pcidda",
    .module     = THIS_MODULE,
    .attach_pci = cb_pcidda_attach_pci,
    .detach     = cb_pcidda_detach,
};

static int __devinit cb_pcidda_pci_probe(struct pci_dev *dev,
                     const struct pci_device_id *ent)
{
    return comedi_pci_auto_config(dev, &cb_pcidda_driver);
}

static void __devexit cb_pcidda_pci_remove(struct pci_dev *dev)
{
    comedi_pci_auto_unconfig(dev);
}

static DEFINE_PCI_DEVICE_TABLE(cb_pcidda_pci_table) = {
    { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0020) },
    { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0021) },
    { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0022) },
    { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0023) },
    { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0024) },
    { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0025) },
    { 0 }
};
MODULE_DEVICE_TABLE(pci, cb_pcidda_pci_table);

static struct pci_driver cb_pcidda_pci_driver = {
    .name       = "cb_pcidda",
    .id_table   = cb_pcidda_pci_table,
    .probe      = cb_pcidda_pci_probe,
    .remove     = __devexit_p(cb_pcidda_pci_remove),
};
module_comedi_pci_driver(cb_pcidda_driver, cb_pcidda_pci_driver);

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");