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comedi/drivers/ni_670x.c
Hardware driver for NI 670x devices
COMEDI - Linux Control and Measurement Device Interface
Copyright (C) 1997-2001 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: ni_670x
Description: National Instruments 670x
Author: Bart Joris <bjoris@advalvas.be>
Updated: Wed, 11 Dec 2002 18:25:35 -0800
Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
Status: unknown
Commands are not supported.
*/
/*
Bart Joris <bjoris@advalvas.be> Last updated on 20/08/2001
Manuals:
322110a.pdf PCI/PXI-6704 User Manual
322110b.pdf PCI/PXI-6703/6704 User Manual
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include "../comedidev.h"
#include "mite.h"
#define AO_VALUE_OFFSET 0x00
#define AO_CHAN_OFFSET 0x0c
#define AO_STATUS_OFFSET 0x10
#define AO_CONTROL_OFFSET 0x10
#define DIO_PORT0_DIR_OFFSET 0x20
#define DIO_PORT0_DATA_OFFSET 0x24
#define DIO_PORT1_DIR_OFFSET 0x28
#define DIO_PORT1_DATA_OFFSET 0x2c
#define MISC_STATUS_OFFSET 0x14
#define MISC_CONTROL_OFFSET 0x14
enum ni_670x_boardid {
BOARD_PCI6703,
BOARD_PXI6704,
BOARD_PCI6704,
};
struct ni_670x_board {
const char *name;
unsigned short ao_chans;
};
static const struct ni_670x_board ni_670x_boards[] = {
[BOARD_PCI6703] = {
.name = "PCI-6703",
.ao_chans = 16,
},
[BOARD_PXI6704] = {
.name = "PXI-6704",
.ao_chans = 32,
},
[BOARD_PCI6704] = {
.name = "PCI-6704",
.ao_chans = 32,
},
};
struct ni_670x_private {
struct mite_struct *mite;
int boardtype;
int dio;
unsigned int ao_readback[32];
};
static int ni_670x_ao_winsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
struct ni_670x_private *devpriv = dev->private;
int i;
int chan = CR_CHAN(insn->chanspec);
/* Channel number mapping :
NI 6703/ NI 6704 | NI 6704 Only
----------------------------------------------------
vch(0) : 0 | ich(16) : 1
vch(1) : 2 | ich(17) : 3
. : . | . .
. : . | . .
. : . | . .
vch(15) : 30 | ich(31) : 31 */
for (i = 0; i < insn->n; i++) {
/* First write in channel register which channel to use */
writel(((chan & 15) << 1) | ((chan & 16) >> 4),
devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);
/* write channel value */
writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);
devpriv->ao_readback[chan] = data[i];
}
return i;
}
static int ni_670x_ao_rinsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
struct ni_670x_private *devpriv = dev->private;
int i;
int chan = CR_CHAN(insn->chanspec);
for (i = 0; i < insn->n; i++)
data[i] = devpriv->ao_readback[chan];
return i;
}
static int ni_670x_dio_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct ni_670x_private *devpriv = dev->private;
void __iomem *io_addr = devpriv->mite->daq_io_addr +
DIO_PORT0_DATA_OFFSET;
if (comedi_dio_update_state(s, data))
writel(s->state, io_addr);
data[1] = readl(io_addr);
return insn->n;
}
static int ni_670x_dio_insn_config(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct ni_670x_private *devpriv = dev->private;
int ret;
ret = comedi_dio_insn_config(dev, s, insn, data, 0);
if (ret)
return ret;
writel(s->io_bits, devpriv->mite->daq_io_addr + DIO_PORT0_DIR_OFFSET);
return insn->n;
}
static int ni_670x_auto_attach(struct comedi_device *dev,
unsigned long context)
{
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
const struct ni_670x_board *thisboard = NULL;
struct ni_670x_private *devpriv;
struct comedi_subdevice *s;
int ret;
int i;
if (context < ARRAY_SIZE(ni_670x_boards))
thisboard = &ni_670x_boards[context];
if (!thisboard)
return -ENODEV;
dev->board_ptr = thisboard;
dev->board_name = thisboard->name;
ret = comedi_pci_enable(dev);
if (ret)
return ret;
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
return -ENOMEM;
devpriv->mite = mite_alloc(pcidev);
if (!devpriv->mite)
return -ENOMEM;
ret = mite_setup(devpriv->mite);
if (ret < 0) {
dev_warn(dev->class_dev, "error setting up mite\n");
return ret;
}
ret = comedi_alloc_subdevices(dev, 2);
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 = 0xffff;
if (s->n_chan == 32) {
const struct comedi_lrange **range_table_list;
range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
GFP_KERNEL);
if (!range_table_list)
return -ENOMEM;
s->range_table_list = range_table_list;
for (i = 0; i < 16; i++) {
range_table_list[i] = &range_bipolar10;
range_table_list[16 + i] = &range_0_20mA;
}
} else {
s->range_table = &range_bipolar10;
}
s->insn_write = &ni_670x_ao_winsn;
s->insn_read = &ni_670x_ao_rinsn;
s = &dev->subdevices[1];
/* digital i/o subdevice */
s->type = COMEDI_SUBD_DIO;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 8;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_bits = ni_670x_dio_insn_bits;
s->insn_config = ni_670x_dio_insn_config;
/* Config of misc registers */
writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET);
/* Config of ao registers */
writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);
dev_info(dev->class_dev, "%s: %s attached\n",
dev->driver->driver_name, dev->board_name);
return 0;
}
static void ni_670x_detach(struct comedi_device *dev)
{
struct ni_670x_private *devpriv = dev->private;
struct comedi_subdevice *s;
if (dev->n_subdevices) {
s = &dev->subdevices[0];
if (s)
kfree(s->range_table_list);
}
if (devpriv && devpriv->mite) {
mite_unsetup(devpriv->mite);
mite_free(devpriv->mite);
}
comedi_pci_disable(dev);
}
static struct comedi_driver ni_670x_driver = {
.driver_name = "ni_670x",
.module = THIS_MODULE,
.auto_attach = ni_670x_auto_attach,
.detach = ni_670x_detach,
};
static int ni_670x_pci_probe(struct pci_dev *dev,
const struct pci_device_id *id)
{
return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
}
static const struct pci_device_id ni_670x_pci_table[] = {
{ PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
{ PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
{ PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
static struct pci_driver ni_670x_pci_driver = {
.name = "ni_670x",
.id_table = ni_670x_pci_table,
.probe = ni_670x_pci_probe,
.remove = comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
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