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/*
comedi/drivers/pcl724.c
Michal Dobes <dobes@tesnet.cz>
hardware driver for Advantech cards:
card: PCL-724, PCL-722, PCL-731
driver: pcl724, pcl722, pcl731
and ADLink cards:
card: ACL-7122, ACL-7124, PET-48DIO
driver: acl7122, acl7124, pet48dio
Options for PCL-724, PCL-731, ACL-7124 and PET-48DIO:
[0] - IO Base
Options for PCL-722 and ACL-7122:
[0] - IO Base
[1] - IRQ (0=disable IRQ) IRQ isn't supported at this time!
[2] -number of DIO:
0, 144: 144 DIO configuration
1, 96: 96 DIO configuration
*/
/*
Driver: pcl724
Description: Advantech PCL-724, PCL-722, PCL-731 ADLink ACL-7122, ACL-7124,
PET-48DIO
Author: Michal Dobes <dobes@tesnet.cz>
Devices: [Advantech] PCL-724 (pcl724), PCL-722 (pcl722), PCL-731 (pcl731),
[ADLink] ACL-7122 (acl7122), ACL-7124 (acl7124), PET-48DIO (pet48dio)
Status: untested
This is driver for digital I/O boards PCL-722/724/731 with 144/24/48 DIO
and for digital I/O boards ACL-7122/7124/PET-48DIO with 144/24/48 DIO.
It need 8255.o for operations and only immediate mode is supported.
See the source for configuration details.
*/
/*
* check_driver overrides:
* struct comedi_insn
*/
#include "../comedidev.h"
#include <linux/ioport.h>
#include <linux/delay.h>
#include "8255.h"
#define PCL722_SIZE 32
#define PCL722_96_SIZE 16
#define PCL724_SIZE 4
#define PCL731_SIZE 8
#define PET48_SIZE 2
#define SIZE_8255 4
/* #define PCL724_IRQ 1 no IRQ support now */
struct pcl724_board {
const char *name; /* board name */
int dio; /* num of DIO */
int numofports; /* num of 8255 subdevices */
unsigned int IRQbits; /* allowed interrupts */
unsigned int io_range; /* len of IO space */
char can_have96;
char is_pet48;
};
static int subdev_8255_cb(int dir, int port, int data, unsigned long arg)
{
unsigned long iobase = arg;
if (dir) {
outb(data, iobase + port);
return 0;
} else {
return inb(iobase + port);
}
}
static int subdev_8255mapped_cb(int dir, int port, int data,
unsigned long iobase)
{
int movport = SIZE_8255 * (iobase >> 12);
iobase &= 0x0fff;
if (dir) {
outb(port + movport, iobase);
outb(data, iobase + 1);
return 0;
} else {
outb(port + movport, iobase);
return inb(iobase + 1);
}
}
static int pcl724_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
const struct pcl724_board *board = comedi_board(dev);
unsigned long iobase;
unsigned int iorange;
int ret, i, n_subdevices;
#ifdef PCL724_IRQ
unsigned int irq;
#endif
iobase = it->options[0];
iorange = board->io_range;
if ((board->can_have96) && ((it->options[1] == 1)
|| (it->options[1] == 96)))
iorange = PCL722_96_SIZE; /* PCL-724 in 96 DIO configuration */
printk(KERN_INFO "comedi%d: pcl724: board=%s, 0x%03lx ", dev->minor,
board->name, iobase);
if (!request_region(iobase, iorange, "pcl724")) {
printk("I/O port conflict\n");
return -EIO;
}
dev->iobase = iobase;
dev->board_name = board->name;
#ifdef PCL724_IRQ
irq = 0;
if (board->IRQbits != 0) { /* board support IRQ */
irq = it->options[1];
if (irq) { /* we want to use IRQ */
if (((1 << irq) & board->IRQbits) == 0) {
printk(KERN_WARNING
", IRQ %u is out of allowed range, "
"DISABLING IT", irq);
irq = 0; /* Bad IRQ */
} else {
if (request_irq
(irq, interrupt_pcl724, 0, "pcl724", dev)) {
printk(KERN_WARNING
", unable to allocate IRQ %u, "
"DISABLING IT", irq);
irq = 0; /* Can't use IRQ */
} else {
printk(", irq=%u", irq);
}
}
}
}
dev->irq = irq;
#endif
printk("\n");
n_subdevices = board->numofports;
if ((board->can_have96) && ((it->options[1] == 1)
|| (it->options[1] == 96)))
n_subdevices = 4; /* PCL-724 in 96 DIO configuration */
ret = comedi_alloc_subdevices(dev, n_subdevices);
if (ret)
return ret;
for (i = 0; i < dev->n_subdevices; i++) {
if (board->is_pet48) {
subdev_8255_init(dev, dev->subdevices + i,
subdev_8255mapped_cb,
(unsigned long)(dev->iobase +
i * 0x1000));
} else
subdev_8255_init(dev, dev->subdevices + i,
subdev_8255_cb,
(unsigned long)(dev->iobase +
SIZE_8255 * i));
}
return 0;
}
static void pcl724_detach(struct comedi_device *dev)
{
const struct pcl724_board *board = comedi_board(dev);
int i;
for (i = 0; i < dev->n_subdevices; i++)
subdev_8255_cleanup(dev, dev->subdevices + i);
#ifdef PCL724_IRQ
if (dev->irq)
free_irq(dev->irq, dev);
#endif
release_region(dev->iobase, board->io_range);
}
static const struct pcl724_board boardtypes[] = {
{ "pcl724", 24, 1, 0x00fc, PCL724_SIZE, 0, 0, },
{ "pcl722", 144, 6, 0x00fc, PCL722_SIZE, 1, 0, },
{ "pcl731", 48, 2, 0x9cfc, PCL731_SIZE, 0, 0, },
{ "acl7122", 144, 6, 0x9ee8, PCL722_SIZE, 1, 0, },
{ "acl7124", 24, 1, 0x00fc, PCL724_SIZE, 0, 0, },
{ "pet48dio", 48, 2, 0x9eb8, PET48_SIZE, 0, 1, },
};
static struct comedi_driver pcl724_driver = {
.driver_name = "pcl724",
.module = THIS_MODULE,
.attach = pcl724_attach,
.detach = pcl724_detach,
.board_name = &boardtypes[0].name,
.num_names = ARRAY_SIZE(boardtypes),
.offset = sizeof(struct pcl724_board),
};
module_comedi_driver(pcl724_driver);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
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