// SPDX-License-Identifier: GPL-2.0+
/*
* comedi/drivers/dyna_pci10xx.c
* Copyright (C) 2011 Prashant Shah, pshah.mumbai@gmail.com
*/
/*
* Driver: dyna_pci10xx
* Description: Dynalog India PCI DAQ Cards, http://www.dynalogindia.com/
* Devices: [Dynalog] PCI-1050 (dyna_pci1050)
* Author: Prashant Shah <pshah.mumbai@gmail.com>
* Status: Stable
*
* Developed at Automation Labs, Chemical Dept., IIT Bombay, India.
* Prof. Kannan Moudgalya <kannan@iitb.ac.in>
* http://www.iitb.ac.in
*
* Notes :
* - Dynalog India Pvt. Ltd. does not have a registered PCI Vendor ID and
* they are using the PLX Technlogies Vendor ID since that is the PCI Chip
* used in the card.
* - Dynalog India Pvt. Ltd. has provided the internal register specification
* for their cards in their manuals.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/comedi/comedi_pci.h>
#define READ_TIMEOUT 50
static const struct comedi_lrange range_pci1050_ai = {
3, {
BIP_RANGE(10),
BIP_RANGE(5),
UNI_RANGE(10)
}
};
static const char range_codes_pci1050_ai[] = { 0x00, 0x10, 0x30 };
struct dyna_pci10xx_private {
struct mutex mutex;
unsigned long BADR3;
};
static int dyna_pci10xx_ai_eoc(
struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned long context)
{
unsigned int status;
status = inw_p(dev->iobase);
if (status & BIT(15))
return 0;
return -EBUSY;
}
static int dyna_pci10xx_insn_read_ai(
struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct dyna_pci10xx_private *devpriv = dev->
private;
int n;
u16 d = 0;
int ret = 0;
unsigned int chan, range;
/* get the channel number and range */
chan = CR_CHAN(insn->chanspec);
range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))];
mutex_lock(&devpriv->mutex);
/* convert n samples */
for (n = 0; n < insn->n; n++) {
/* trigger conversion */
smp_mb();
outw_p(0x0000 + range + chan, dev->iobase + 2);
usleep_range(10, 20);
ret = comedi_timeout(dev, s, insn, dyna_pci10xx_ai_eoc, 0);
if (ret)
break;
/* read data */
d = inw_p(dev->iobase);
/* mask the first 4 bits - EOC bits */
d &= 0x0FFF;
data[n] = d;
}
mutex_unlock(&devpriv->mutex);
/* return the number of samples read/written */
return ret ? ret : n;
}
/* analog output callback */
static int dyna_pci10xx_insn_write_ao(
struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct dyna_pci10xx_private *devpriv = dev->
private;
int n;
mutex_lock(&devpriv->mutex);
for (n = 0; n < insn->n; n++) {
smp_mb();
/* trigger conversion and write data */
outw_p(data[n], dev->iobase);
usleep_range(10, 20);
}
mutex_unlock(&devpriv->mutex);
return n;
}
/* digital input bit interface */
static int dyna_pci10xx_di_insn_bits(
struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct dyna_pci10xx_private *devpriv = dev->
private;
u16 d = 0;
mutex_lock(&devpriv->mutex);
smp_mb();
d = inw_p(devpriv->BADR3);
usleep_range(10, 100);
/* on return the data[0] contains output and data[1] contains input */
data[1] = d;
data[0] = s->state;
mutex_unlock(&devpriv->mutex);
return insn->n;
}
static int dyna_pci10xx_do_insn_bits(
struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct dyna_pci10xx_private *devpriv = dev->
private;
mutex_lock(&devpriv->mutex);
if (comedi_dio_update_state(s, data)) {
smp_mb();
outw_p(s->state, devpriv->BADR3);
usleep_range(10, 100);
}
data[1] = s->state;
mutex_unlock(&devpriv->mutex);
return insn->n;
}
static int dyna_pci10xx_auto_attach(
struct comedi_device *dev,
unsigned long context_unused)
{
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
struct dyna_pci10xx_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);
devpriv->BADR3 = pci_resource_start(pcidev, 3);
mutex_init(&devpriv->mutex);
ret = comedi_alloc_subdevices(dev, 4);
if (ret)
return ret;
/* analog input */
s = &dev->subdevices[0];
s->type = COMEDI_SUBD_AI;
s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
s->n_chan = 16;
s->maxdata = 0x0FFF;
s->range_table = &range_pci1050_ai;
s->insn_read = dyna_pci10xx_insn_read_ai;
/* analog output */
s = &dev->subdevices[1];
s->type = COMEDI_SUBD_AO;
s->subdev_flags = SDF_WRITABLE;
s->n_chan = 1;
s->maxdata = 0x0FFF;
s->range_table = &range_unipolar10;
s->insn_write = dyna_pci10xx_insn_write_ao;
/* digital input */
s = &dev->subdevices[2];
s->type = COMEDI_SUBD_DI;
s->subdev_flags = SDF_READABLE;
s->n_chan = 16;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_bits = dyna_pci10xx_di_insn_bits;
/* digital output */
s = &dev->subdevices[3];
s->type = COMEDI_SUBD_DO;
s->subdev_flags = SDF_WRITABLE;
s->n_chan = 16;
s->maxdata = 1;
s->range_table = &range_digital;
s->state = 0;
s->insn_bits = dyna_pci10xx_do_insn_bits;
return 0;
}
static void dyna_pci10xx_detach(
struct comedi_device *dev)
{
struct dyna_pci10xx_private *devpriv = dev->
private;
comedi_pci_detach(dev);
if (devpriv)
mutex_destroy(&devpriv->mutex);
}
static struct comedi_driver dyna_pci10xx_driver = {
.driver_name =
"dyna_pci10xx",
.module = THIS_MODULE,
.auto_attach = dyna_pci10xx_auto_attach,
.detach = dyna_pci10xx_detach,
};
static int dyna_pci10xx_pci_probe(
struct pci_dev *dev,
const struct pci_device_id *id)
{
return comedi_pci_auto_config(dev, &dyna_pci10xx_driver,
id->driver_data);
}
static const struct pci_device_id dyna_pci10xx_pci_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_PLX, 0x1050) },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, dyna_pci10xx_pci_table);
static struct pci_driver dyna_pci10xx_pci_driver = {
.name =
"dyna_pci10xx",
.id_table = dyna_pci10xx_pci_table,
.probe = dyna_pci10xx_pci_probe,
.remove = comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(dyna_pci10xx_driver, dyna_pci10xx_pci_driver);
MODULE_LICENSE(
"GPL");
MODULE_AUTHOR(
"Prashant Shah ");
MODULE_DESCRIPTION(
"Comedi based drivers for Dynalog PCI DAQ cards");
