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/*
* addi_apci_16xx.c
* Copyright (C) 2004,2005 ADDI-DATA GmbH for the source code of this module.
* Project manager: S. Weber
*
* ADDI-DATA GmbH
* Dieselstrasse 3
* D-77833 Ottersweier
* Tel: +19(0)7223/9493-0
* Fax: +49(0)7223/9493-92
* http://www.addi-data.com
* info@addi-data.com
*
* 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.
*/
#include <linux/pci.h>
#include "../comedidev.h"
/*
* Register I/O map
*/
#define APCI16XX_IN_REG(x) (((x) * 4) + 0x08)
#define APCI16XX_OUT_REG(x) (((x) * 4) + 0x14)
#define APCI16XX_DIR_REG(x) (((x) * 4) + 0x20)
enum apci16xx_boardid {
BOARD_APCI1648,
BOARD_APCI1696,
};
struct apci16xx_boardinfo {
const char *name;
int n_chan;
};
static const struct apci16xx_boardinfo apci16xx_boardtypes[] = {
[BOARD_APCI1648] = {
.name = "apci1648",
.n_chan = 48, /* 2 subdevices */
},
[BOARD_APCI1696] = {
.name = "apci1696",
.n_chan = 96, /* 3 subdevices */
},
};
static int apci16xx_insn_config(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
unsigned int chan_mask = 1 << CR_CHAN(insn->chanspec);
unsigned int bits;
/*
* Each 8-bit "port" is configurable as either input or
* output. Changing the configuration of any channel in
* a port changes the entire port.
*/
if (chan_mask & 0x000000ff)
bits = 0x000000ff;
else if (chan_mask & 0x0000ff00)
bits = 0x0000ff00;
else if (chan_mask & 0x00ff0000)
bits = 0x00ff0000;
else
bits = 0xff000000;
switch (data[0]) {
case INSN_CONFIG_DIO_INPUT:
s->io_bits &= ~bits;
break;
case INSN_CONFIG_DIO_OUTPUT:
s->io_bits |= bits;
break;
case INSN_CONFIG_DIO_QUERY:
data[1] = (s->io_bits & bits) ? COMEDI_INPUT : COMEDI_OUTPUT;
return insn->n;
default:
return -EINVAL;
}
outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(s->index));
return insn->n;
}
static int apci16xx_dio_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
unsigned int mask = data[0];
unsigned int bits = data[1];
/* Only update the channels configured as outputs */
mask &= s->io_bits;
if (mask) {
s->state &= ~mask;
s->state |= (bits & mask);
outl(s->state, dev->iobase + APCI16XX_OUT_REG(s->index));
}
data[1] = inl(dev->iobase + APCI16XX_IN_REG(s->index));
return insn->n;
}
static int apci16xx_auto_attach(struct comedi_device *dev,
unsigned long context)
{
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
const struct apci16xx_boardinfo *board = NULL;
struct comedi_subdevice *s;
unsigned int n_subdevs;
unsigned int last;
int i;
int ret;
if (context < ARRAY_SIZE(apci16xx_boardtypes))
board = &apci16xx_boardtypes[context];
if (!board)
return -ENODEV;
dev->board_ptr = board;
dev->board_name = board->name;
ret = comedi_pci_enable(dev);
if (ret)
return ret;
dev->iobase = pci_resource_start(pcidev, 0);
/*
* Work out the nubmer of subdevices needed to support all the
* digital i/o channels on the board. Each subdevice supports
* up to 32 channels.
*/
n_subdevs = board->n_chan / 32;
if ((n_subdevs * 32) < board->n_chan) {
last = board->n_chan - (n_subdevs * 32);
n_subdevs++;
} else {
last = 0;
}
ret = comedi_alloc_subdevices(dev, n_subdevs);
if (ret)
return ret;
/* Initialize the TTL digital i/o subdevices */
for (i = 0; i < n_subdevs; i++) {
s = &dev->subdevices[i];
s->type = COMEDI_SUBD_DIO;
s->subdev_flags = SDF_WRITEABLE | SDF_READABLE;
s->n_chan = ((i * 32) < board->n_chan) ? 32 : last;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_config = apci16xx_insn_config;
s->insn_bits = apci16xx_dio_insn_bits;
/* Default all channels to inputs */
s->io_bits = 0;
outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(i));
}
return 0;
}
static struct comedi_driver apci16xx_driver = {
.driver_name = "addi_apci_16xx",
.module = THIS_MODULE,
.auto_attach = apci16xx_auto_attach,
.detach = comedi_pci_disable,
};
static int apci16xx_pci_probe(struct pci_dev *dev,
const struct pci_device_id *id)
{
return comedi_pci_auto_config(dev, &apci16xx_driver, id->driver_data);
}
static DEFINE_PCI_DEVICE_TABLE(apci16xx_pci_table) = {
{ PCI_VDEVICE(ADDIDATA, 0x1009), BOARD_APCI1648 },
{ PCI_VDEVICE(ADDIDATA, 0x100a), BOARD_APCI1696 },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, apci16xx_pci_table);
static struct pci_driver apci16xx_pci_driver = {
.name = "addi_apci_16xx",
.id_table = apci16xx_pci_table,
.probe = apci16xx_pci_probe,
.remove = comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(apci16xx_driver, apci16xx_pci_driver);
MODULE_DESCRIPTION("ADDI-DATA APCI-1648/1696, TTL I/O boards");
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_LICENSE("GPL");
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