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comedi/drivers/pci1723.c
COMEDI - Linux Control and Measurement Device Interface
Copyright (C) 2000 David A. Schleef <ds@schleef.org>
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.
*/
/*
Driver: adv_pci1723
Description: Advantech PCI-1723
Author: yonggang <rsmgnu@gmail.com>, Ian Abbott <abbotti@mev.co.uk>
Devices: [Advantech] PCI-1723 (adv_pci1723)
Updated: Mon, 14 Apr 2008 15:12:56 +0100
Status: works
Configuration Options:
[0] - PCI bus of device (optional)
[1] - PCI slot of device (optional)
If bus/slot is not specified, the first supported
PCI device found will be used.
Subdevice 0 is 8-channel AO, 16-bit, range +/- 10 V.
Subdevice 1 is 16-channel DIO. The channels are configurable as input or
output in 2 groups (0 to 7, 8 to 15). Configuring any channel implicitly
configures all channels in the same group.
TODO:
1. Add the two milliamp ranges to the AO subdevice (0 to 20 mA, 4 to 20 mA).
2. Read the initial ranges and values of the AO subdevice at start-up instead
of reinitializing them.
3. Implement calibration.
*/
#include <linux/module.h>
#include <linux/pci.h>
#include "../comedidev.h"
/* all the registers for the pci1723 board */
#define PCI1723_DA(N) ((N)<<1) /* W: D/A register N (0 to 7) */
#define PCI1723_SYN_SET 0x12 /* synchronized set register */
#define PCI1723_ALL_CHNNELE_SYN_STROBE 0x12
/* synchronized status register */
#define PCI1723_RANGE_CALIBRATION_MODE 0x14
/* range and calibration mode */
#define PCI1723_RANGE_CALIBRATION_STATUS 0x14
/* range and calibration status */
#define PCI1723_CONTROL_CMD_CALIBRATION_FUN 0x16
/*
* SADC control command for
* calibration function
*/
#define PCI1723_STATUS_CMD_CALIBRATION_FUN 0x16
/*
* SADC control status for
* calibration function
*/
#define PCI1723_CALIBRATION_PARA_STROBE 0x18
/* Calibration parameter strobe */
#define PCI1723_DIGITAL_IO_PORT_SET 0x1A /* Digital I/O port setting */
#define PCI1723_DIGITAL_IO_PORT_MODE 0x1A /* Digital I/O port mode */
#define PCI1723_WRITE_DIGITAL_OUTPUT_CMD 0x1C
/* Write digital output command */
#define PCI1723_READ_DIGITAL_INPUT_DATA 0x1C /* Read digital input data */
#define PCI1723_WRITE_CAL_CMD 0x1E /* Write calibration command */
#define PCI1723_READ_CAL_STATUS 0x1E /* Read calibration status */
#define PCI1723_SYN_STROBE 0x20 /* Synchronized strobe */
#define PCI1723_RESET_ALL_CHN_STROBE 0x22
/* Reset all D/A channels strobe */
#define PCI1723_RESET_CAL_CONTROL_STROBE 0x24
/*
* Reset the calibration
* controller strobe
*/
#define PCI1723_CHANGE_CHA_OUTPUT_TYPE_STROBE 0x26
/*
* Change D/A channels output
* type strobe
*/
#define PCI1723_SELECT_CALIBRATION 0x28 /* Select the calibration Ref_V */
struct pci1723_private {
unsigned char da_range[8]; /* D/A output range for each channel */
short ao_data[8]; /* data output buffer */
};
/*
* The pci1723 card reset;
*/
static int pci1723_reset(struct comedi_device *dev)
{
struct pci1723_private *devpriv = dev->private;
int i;
outw(0x01, dev->iobase + PCI1723_SYN_SET);
/* set synchronous output mode */
for (i = 0; i < 8; i++) {
/* set all outputs to 0V */
devpriv->ao_data[i] = 0x8000;
outw(devpriv->ao_data[i], dev->iobase + PCI1723_DA(i));
/* set all ranges to +/- 10V */
devpriv->da_range[i] = 0;
outw(((devpriv->da_range[i] << 4) | i),
PCI1723_RANGE_CALIBRATION_MODE);
}
outw(0, dev->iobase + PCI1723_CHANGE_CHA_OUTPUT_TYPE_STROBE);
/* update ranges */
outw(0, dev->iobase + PCI1723_SYN_STROBE); /* update outputs */
/* set asynchronous output mode */
outw(0, dev->iobase + PCI1723_SYN_SET);
return 0;
}
static int pci1723_insn_read_ao(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
struct pci1723_private *devpriv = dev->private;
int n, chan;
chan = CR_CHAN(insn->chanspec);
for (n = 0; n < insn->n; n++)
data[n] = devpriv->ao_data[chan];
return n;
}
/*
analog data output;
*/
static int pci1723_ao_write_winsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
struct pci1723_private *devpriv = dev->private;
int n, chan;
chan = CR_CHAN(insn->chanspec);
for (n = 0; n < insn->n; n++) {
devpriv->ao_data[chan] = data[n];
outw(data[n], dev->iobase + PCI1723_DA(chan));
}
return n;
}
/*
digital i/o config/query
*/
static int pci1723_dio_insn_config(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
unsigned int chan = CR_CHAN(insn->chanspec);
unsigned int mask;
unsigned short mode;
int ret;
if (chan < 8)
mask = 0x00ff;
else
mask = 0xff00;
ret = comedi_dio_insn_config(dev, s, insn, data, mask);
if (ret)
return ret;
/* update hardware DIO mode */
mode = 0x0000; /* assume output */
if (!(s->io_bits & 0x00ff))
mode |= 0x0001; /* low byte input */
if (!(s->io_bits & 0xff00))
mode |= 0x0002; /* high byte input */
outw(mode, dev->iobase + PCI1723_DIGITAL_IO_PORT_SET);
return insn->n;
}
/*
digital i/o bits read/write
*/
static int pci1723_dio_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
if (data[0]) {
s->state &= ~data[0];
s->state |= (data[0] & data[1]);
outw(s->state, dev->iobase + PCI1723_WRITE_DIGITAL_OUTPUT_CMD);
}
data[1] = inw(dev->iobase + PCI1723_READ_DIGITAL_INPUT_DATA);
return insn->n;
}
static int pci1723_auto_attach(struct comedi_device *dev,
unsigned long context_unused)
{
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
struct pci1723_private *devpriv;
struct comedi_subdevice *s;
int ret;
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
return -ENOMEM;
ret = comedi_pci_enable(dev);
if (ret)
return ret;
dev->iobase = pci_resource_start(pcidev, 2);
ret = comedi_alloc_subdevices(dev, 2);
if (ret)
return ret;
s = &dev->subdevices[0];
dev->write_subdev = s;
s->type = COMEDI_SUBD_AO;
s->subdev_flags = SDF_WRITEABLE | SDF_GROUND | SDF_COMMON;
s->n_chan = 8;
s->maxdata = 0xffff;
s->len_chanlist = 8;
s->range_table = &range_bipolar10;
s->insn_write = pci1723_ao_write_winsn;
s->insn_read = pci1723_insn_read_ao;
s = &dev->subdevices[1];
s->type = COMEDI_SUBD_DIO;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 16;
s->maxdata = 1;
s->len_chanlist = 16;
s->range_table = &range_digital;
s->insn_config = pci1723_dio_insn_config;
s->insn_bits = pci1723_dio_insn_bits;
/* read DIO config */
switch (inw(dev->iobase + PCI1723_DIGITAL_IO_PORT_MODE) & 0x03) {
case 0x00: /* low byte output, high byte output */
s->io_bits = 0xFFFF;
break;
case 0x01: /* low byte input, high byte output */
s->io_bits = 0xFF00;
break;
case 0x02: /* low byte output, high byte input */
s->io_bits = 0x00FF;
break;
case 0x03: /* low byte input, high byte input */
s->io_bits = 0x0000;
break;
}
/* read DIO port state */
s->state = inw(dev->iobase + PCI1723_READ_DIGITAL_INPUT_DATA);
pci1723_reset(dev);
dev_info(dev->class_dev, "%s attached\n", dev->board_name);
return 0;
}
static void pci1723_detach(struct comedi_device *dev)
{
if (dev->iobase)
pci1723_reset(dev);
comedi_pci_disable(dev);
}
static struct comedi_driver adv_pci1723_driver = {
.driver_name = "adv_pci1723",
.module = THIS_MODULE,
.auto_attach = pci1723_auto_attach,
.detach = pci1723_detach,
};
static int adv_pci1723_pci_probe(struct pci_dev *dev,
const struct pci_device_id *id)
{
return comedi_pci_auto_config(dev, &adv_pci1723_driver,
id->driver_data);
}
static DEFINE_PCI_DEVICE_TABLE(adv_pci1723_pci_table) = {
{ PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1723) },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, adv_pci1723_pci_table);
static struct pci_driver adv_pci1723_pci_driver = {
.name = "adv_pci1723",
.id_table = adv_pci1723_pci_table,
.probe = adv_pci1723_pci_probe,
.remove = comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(adv_pci1723_driver, adv_pci1723_pci_driver);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
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