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/*
* pcl724.c
* Comedi driver for 8255 based ISA and PC/104 DIO boards
*
* Michal Dobes <dobes@tesnet.cz>
*/
/*
* Driver: pcl724
* Description: Comedi driver for 8255 based ISA DIO boards
* Devices: [Advantech] PCL-724 (pcl724), PCL-722 (pcl722), PCL-731 (pcl731),
* [ADLink] ACL-7122 (acl7122), ACL-7124 (acl7124), PET-48DIO (pet48dio),
* [WinSystems] PCM-IO48 (pcmio48),
* [Diamond Systems] ONYX-MM-DIO (onyx-mm-dio)
* Author: Michal Dobes <dobes@tesnet.cz>
* Status: untested
*
* Configuration options:
* [0] - IO Base
* [1] - IRQ (not supported)
* [2] - number of DIO (pcl722 and acl7122 boards)
* 0, 144: 144 DIO configuration
* 1, 96: 96 DIO configuration
*/
#include <linux/module.h>
#include "../comedidev.h"
#include "8255.h"
struct pcl724_board {
const char *name;
unsigned int io_range;
unsigned int can_have96:1;
unsigned int is_pet48:1;
int numofports;
};
static const struct pcl724_board boardtypes[] = {
{
.name = "pcl724",
.io_range = 0x04,
.numofports = 1, /* 24 DIO channels */
}, {
.name = "pcl722",
.io_range = 0x20,
.can_have96 = 1,
.numofports = 6, /* 144 (or 96) DIO channels */
}, {
.name = "pcl731",
.io_range = 0x08,
.numofports = 2, /* 48 DIO channels */
}, {
.name = "acl7122",
.io_range = 0x20,
.can_have96 = 1,
.numofports = 6, /* 144 (or 96) DIO channels */
}, {
.name = "acl7124",
.io_range = 0x04,
.numofports = 1, /* 24 DIO channels */
}, {
.name = "pet48dio",
.io_range = 0x02,
.is_pet48 = 1,
.numofports = 2, /* 48 DIO channels */
}, {
.name = "pcmio48",
.io_range = 0x08,
.numofports = 2, /* 48 DIO channels */
}, {
.name = "onyx-mm-dio",
.io_range = 0x10,
.numofports = 2, /* 48 DIO channels */
},
};
static int pcl724_8255mapped_io(struct comedi_device *dev,
int dir, int port, int data,
unsigned long iobase)
{
int movport = I8255_SIZE * (iobase >> 12);
iobase &= 0x0fff;
outb(port + movport, iobase);
if (dir) {
outb(data, iobase + 1);
return 0;
}
return inb(iobase + 1);
}
static int pcl724_attach(struct comedi_device *dev,
struct comedi_devconfig *it)
{
const struct pcl724_board *board = dev->board_ptr;
struct comedi_subdevice *s;
unsigned long iobase;
unsigned int iorange;
int n_subdevices;
int ret;
int i;
iorange = board->io_range;
n_subdevices = board->numofports;
/* Handle PCL-724 in 96 DIO configuration */
if (board->can_have96 &&
(it->options[2] == 1 || it->options[2] == 96)) {
iorange = 0x10;
n_subdevices = 4;
}
ret = comedi_request_region(dev, it->options[0], iorange);
if (ret)
return ret;
ret = comedi_alloc_subdevices(dev, n_subdevices);
if (ret)
return ret;
for (i = 0; i < dev->n_subdevices; i++) {
s = &dev->subdevices[i];
if (board->is_pet48) {
iobase = dev->iobase + (i * 0x1000);
ret = subdev_8255_init(dev, s, pcl724_8255mapped_io,
iobase);
} else {
ret = subdev_8255_init(dev, s, NULL, i * I8255_SIZE);
}
if (ret)
return ret;
}
return 0;
}
static struct comedi_driver pcl724_driver = {
.driver_name = "pcl724",
.module = THIS_MODULE,
.attach = pcl724_attach,
.detach = comedi_legacy_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 driver for 8255 based ISA and PC/104 DIO boards");
MODULE_LICENSE("GPL");
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