// SPDX-License-Identifier: GPL-2.0+
/*
* adv_pci1723.c
* Comedi driver for the Advantech PCI-1723 card.
*
* COMEDI - Linux Control and Measurement Device Interface
* Copyright (C) 2000 David A. Schleef <ds@schleef.org>
*/
/*
* 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: not applicable, uses comedi PCI auto config
*
* 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/comedi/comedi_pci.h>
/*
* PCI Bar 2 I/O Register map (dev->iobase)
*/
#define PCI1723_AO_REG(x) (0x00 + ((x) * 2))
#define PCI1723_BOARD_ID_REG 0x10
#define PCI1723_BOARD_ID_MASK (0xf << 0)
#define PCI1723_SYNC_CTRL_REG 0x12
#define PCI1723_SYNC_CTRL(x) (((x) & 0x1) << 0)
#define PCI1723_SYNC_CTRL_ASYNC PCI1723_SYNC_CTRL(0)
#define PCI1723_SYNC_CTRL_SYNC PCI1723_SYNC_CTRL(1)
#define PCI1723_CTRL_REG 0x14
#define PCI1723_CTRL_BUSY BIT(15)
#define PCI1723_CTRL_INIT BIT(14)
#define PCI1723_CTRL_SELF BIT(8)
#define PCI1723_CTRL_IDX(x) (((x) & 0x3) << 6)
#define PCI1723_CTRL_RANGE(x) (((x) & 0x3) << 4)
#define PCI1723_CTRL_SEL(x) (((x) & 0x1) << 3)
#define PCI1723_CTRL_GAIN PCI1723_CTRL_SEL(0)
#define PCI1723_CTRL_OFFSET PCI1723_CTRL_SEL(1)
#define PCI1723_CTRL_CHAN(x) (((x) & 0x7) << 0)
#define PCI1723_CALIB_CTRL_REG 0x16
#define PCI1723_CALIB_CTRL_CS BIT(2)
#define PCI1723_CALIB_CTRL_DAT BIT(1)
#define PCI1723_CALIB_CTRL_CLK BIT(0)
#define PCI1723_CALIB_STROBE_REG 0x18
#define PCI1723_DIO_CTRL_REG 0x1a
#define PCI1723_DIO_CTRL_HDIO BIT(1)
#define PCI1723_DIO_CTRL_LDIO BIT(0)
#define PCI1723_DIO_DATA_REG 0x1c
#define PCI1723_CALIB_DATA_REG 0x1e
#define PCI1723_SYNC_STROBE_REG 0x20
#define PCI1723_RESET_AO_STROBE_REG 0x22
#define PCI1723_RESET_CALIB_STROBE_REG 0x24
#define PCI1723_RANGE_STROBE_REG 0x26
#define PCI1723_VREF_REG 0x28
#define PCI1723_VREF(x) (((x) & 0x3) << 0)
#define PCI1723_VREF_NEG10V PCI1723_VREF(0)
#define PCI1723_VREF_0V PCI1723_VREF(1)
#define PCI1723_VREF_POS10V PCI1723_VREF(3)
static int pci1723_ao_insn_write(
struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
unsigned int chan = CR_CHAN(insn->chanspec);
int i;
for (i = 0; i < insn->n; i++) {
unsigned int val = data[i];
outw(val, dev->iobase + PCI1723_AO_REG(chan));
s->readback[chan] = val;
}
return insn->n;
}
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 = (chan < 8) ? 0x00ff : 0xff00;
unsigned short mode = 0x0000;
/* assume output */
int ret;
ret = comedi_dio_insn_config(dev, s, insn, data, mask);
if (ret)
return ret;
if (!(s->io_bits & 0x00ff))
mode |= PCI1723_DIO_CTRL_LDIO;
/* low byte input */
if (!(s->io_bits & 0xff00))
mode |= PCI1723_DIO_CTRL_HDIO;
/* high byte input */
outw(mode, dev->iobase + PCI1723_DIO_CTRL_REG);
return insn->n;
}
static int pci1723_dio_insn_bits(
struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
if (comedi_dio_update_state(s, data))
outw(s->state, dev->iobase + PCI1723_DIO_DATA_REG);
data[1] = inw(dev->iobase + PCI1723_DIO_DATA_REG);
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 comedi_subdevice *s;
unsigned int val;
int ret;
int i;
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];
s->type = COMEDI_SUBD_AO;
s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
s->n_chan = 8;
s->maxdata = 0xffff;
s->range_table = &range_bipolar10;
s->insn_write = pci1723_ao_insn_write;
ret = comedi_alloc_subdev_readback(s);
if (ret)
return ret;
/* synchronously reset all analog outputs to 0V, +/-10V range */
outw(PCI1723_SYNC_CTRL_SYNC, dev->iobase + PCI1723_SYNC_CTRL_REG);
for (i = 0; i < s->n_chan; i++) {
outw(PCI1723_CTRL_RANGE(0) | PCI1723_CTRL_CHAN(i),
PCI1723_CTRL_REG);
outw(0, dev->iobase + PCI1723_RANGE_STROBE_REG);
outw(0x8000, dev->iobase + PCI1723_AO_REG(i));
s->readback[i] = 0x8000;
}
outw(0, dev->iobase + PCI1723_SYNC_STROBE_REG);
/* disable syncronous control */
outw(PCI1723_SYNC_CTRL_ASYNC, dev->iobase + PCI1723_SYNC_CTRL_REG);
s = &dev->subdevices[1];
s->type = COMEDI_SUBD_DIO;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 16;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_config = pci1723_dio_insn_config;
s->insn_bits = pci1723_dio_insn_bits;
/* get initial DIO direction and state */
val = inw(dev->iobase + PCI1723_DIO_CTRL_REG);
if (!(val & PCI1723_DIO_CTRL_LDIO))
s->io_bits |= 0x00ff;
/* low byte output */
if (!(val & PCI1723_DIO_CTRL_HDIO))
s->io_bits |= 0xff00;
/* high byte output */
s->state = inw(dev->iobase + PCI1723_DIO_DATA_REG);
return 0;
}
static struct comedi_driver adv_pci1723_driver = {
.driver_name =
"adv_pci1723",
.module = THIS_MODULE,
.auto_attach = pci1723_auto_attach,
.detach = comedi_pci_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 const struct pci_device_id 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 https://www.comedi.org");
MODULE_DESCRIPTION(
"Advantech PCI-1723 Comedi driver");
MODULE_LICENSE(
"GPL");
