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* comedi/drivers/ni_daq_700.c
* Driver for DAQCard-700 DIO only
* copied from 8255
*
* COMEDI - Linux Control and Measurement Device Interface
* Copyright (C) 1998 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
Driver: ni_daq_700
Description: National Instruments PCMCIA DAQCard-700 DIO only
Author: Fred Brooks <nsaspook@nsaspook.com>,
based on ni_daq_dio24 by Daniel Vecino Castel <dvecino@able.es>
Devices: [National Instruments] PCMCIA DAQ-Card-700 (ni_daq_700)
Status: works
Updated: Thu, 21 Feb 2008 12:07:20 +0000
The daqcard-700 appears in Comedi as a single digital I/O subdevice with
16 channels. The channel 0 corresponds to the daqcard-700's output
port, bit 0; channel 8 corresponds to the input port, bit 0.
Direction configuration: channels 0-7 output, 8-15 input (8225 device
emu as port A output, port B input, port C N/A).
IRQ is assigned but not used.
*/
#include <linux/interrupt.h>
#include <linux/slab.h>
#include "../comedidev.h"
#include <linux/ioport.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
static struct pcmcia_device *pcmcia_cur_dev;
#define DIO700_SIZE 8 /* size of io region used by board */
static int dio700_attach(struct comedi_device *dev,
struct comedi_devconfig *it);
static int dio700_detach(struct comedi_device *dev);
enum dio700_bustype { pcmcia_bustype };
struct dio700_board {
const char *name;
int device_id; /* device id for pcmcia board */
enum dio700_bustype bustype; /* PCMCIA */
int have_dio; /* have daqcard-700 dio */
/* function pointers so we can use inb/outb or readb/writeb */
/* as appropriate */
unsigned int (*read_byte) (unsigned int address);
void (*write_byte) (unsigned int byte, unsigned int address);
};
static const struct dio700_board dio700_boards[] = {
{
.name = "daqcard-700",
/* 0x10b is manufacturer id, 0x4743 is device id */
.device_id = 0x4743,
.bustype = pcmcia_bustype,
.have_dio = 1,
},
{
.name = "ni_daq_700",
/* 0x10b is manufacturer id, 0x4743 is device id */
.device_id = 0x4743,
.bustype = pcmcia_bustype,
.have_dio = 1,
},
};
/*
* Useful for shorthand access to the particular board structure
*/
#define thisboard ((const struct dio700_board *)dev->board_ptr)
struct dio700_private {
int data; /* number of data points left to be taken */
};
#define devpriv ((struct dio700_private *)dev->private)
static struct comedi_driver driver_dio700 = {
.driver_name = "ni_daq_700",
.module = THIS_MODULE,
.attach = dio700_attach,
.detach = dio700_detach,
.num_names = ARRAY_SIZE(dio700_boards),
.board_name = &dio700_boards[0].name,
.offset = sizeof(struct dio700_board),
};
/* the real driver routines */
#define _700_SIZE 8
#define _700_DATA 0
#define DIO_W 0x04
#define DIO_R 0x05
struct subdev_700_struct {
unsigned long cb_arg;
int (*cb_func) (int, int, int, unsigned long);
int have_irq;
};
#define CALLBACK_ARG (((struct subdev_700_struct *)s->private)->cb_arg)
#define CALLBACK_FUNC (((struct subdev_700_struct *)s->private)->cb_func)
#define subdevpriv ((struct subdev_700_struct *)s->private)
static void do_config(struct comedi_device *dev, struct comedi_subdevice *s);
void subdev_700_interrupt(struct comedi_device *dev, struct comedi_subdevice *s)
{
short d;
d = CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG);
comedi_buf_put(s->async, d);
s->async->events |= COMEDI_CB_EOS;
comedi_event(dev, s);
}
EXPORT_SYMBOL(subdev_700_interrupt);
static int subdev_700_cb(int dir, int port, int data, unsigned long arg)
{
/* port is always A for output and B for input (8255 emu) */
unsigned long iobase = arg;
if (dir) {
outb(data, iobase + DIO_W);
return 0;
} else {
return inb(iobase + DIO_R);
}
}
static int subdev_700_insn(struct comedi_device *dev,
struct comedi_subdevice *s, struct comedi_insn *insn,
unsigned int *data)
{
if (data[0]) {
s->state &= ~data[0];
s->state |= (data[0] & data[1]);
if (data[0] & 0xff)
CALLBACK_FUNC(1, _700_DATA, s->state & 0xff,
CALLBACK_ARG);
}
data[1] = s->state & 0xff;
data[1] |= CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG) << 8;
return 2;
}
static int subdev_700_insn_config(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
switch (data[0]) {
case INSN_CONFIG_DIO_INPUT:
break;
case INSN_CONFIG_DIO_OUTPUT:
break;
case INSN_CONFIG_DIO_QUERY:
data[1] =
(s->
io_bits & (1 << CR_CHAN(insn->chanspec))) ? COMEDI_OUTPUT :
COMEDI_INPUT;
return insn->n;
break;
default:
return -EINVAL;
}
return 1;
}
static void do_config(struct comedi_device *dev, struct comedi_subdevice *s)
{ /* use powerup defaults */
return;
}
static int subdev_700_cmdtest(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_cmd *cmd)
{
int err = 0;
unsigned int tmp;
/* step 1 */
tmp = cmd->start_src;
cmd->start_src &= TRIG_NOW;
if (!cmd->start_src || tmp != cmd->start_src)
err++;
tmp = cmd->scan_begin_src;
cmd->scan_begin_src &= TRIG_EXT;
if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
err++;
tmp = cmd->convert_src;
cmd->convert_src &= TRIG_FOLLOW;
if (!cmd->convert_src || tmp != cmd->convert_src)
err++;
tmp = cmd->scan_end_src;
cmd->scan_end_src &= TRIG_COUNT;
if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
err++;
tmp = cmd->stop_src;
cmd->stop_src &= TRIG_NONE;
if (!cmd->stop_src || tmp != cmd->stop_src)
err++;
if (err)
return 1;
/* step 2 */
if (err)
return 2;
/* step 3 */
if (cmd->start_arg != 0) {
cmd->start_arg = 0;
err++;
}
if (cmd->scan_begin_arg != 0) {
cmd->scan_begin_arg = 0;
err++;
}
if (cmd->convert_arg != 0) {
cmd->convert_arg = 0;
err++;
}
if (cmd->scan_end_arg != 1) {
cmd->scan_end_arg = 1;
err++;
}
if (cmd->stop_arg != 0) {
cmd->stop_arg = 0;
err++;
}
if (err)
return 3;
/* step 4 */
if (err)
return 4;
return 0;
}
static int subdev_700_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
{
/* FIXME */
return 0;
}
static int subdev_700_cancel(struct comedi_device *dev,
struct comedi_subdevice *s)
{
/* FIXME */
return 0;
}
int subdev_700_init(struct comedi_device *dev, struct comedi_subdevice *s,
int (*cb) (int, int, int, unsigned long), unsigned long arg)
{
s->type = COMEDI_SUBD_DIO;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 16;
s->range_table = &range_digital;
s->maxdata = 1;
s->private = kmalloc(sizeof(struct subdev_700_struct), GFP_KERNEL);
if (!s->private)
return -ENOMEM;
CALLBACK_ARG = arg;
if (cb == NULL)
CALLBACK_FUNC = subdev_700_cb;
else
CALLBACK_FUNC = cb;
s->insn_bits = subdev_700_insn;
s->insn_config = subdev_700_insn_config;
s->state = 0;
s->io_bits = 0x00ff;
do_config(dev, s);
return 0;
}
EXPORT_SYMBOL(subdev_700_init);
int subdev_700_init_irq(struct comedi_device *dev, struct comedi_subdevice *s,
int (*cb) (int, int, int, unsigned long),
unsigned long arg)
{
int ret;
ret = subdev_700_init(dev, s, cb, arg);
if (ret < 0)
return ret;
s->do_cmdtest = subdev_700_cmdtest;
s->do_cmd = subdev_700_cmd;
s->cancel = subdev_700_cancel;
subdevpriv->have_irq = 1;
return 0;
}
EXPORT_SYMBOL(subdev_700_init_irq);
void subdev_700_cleanup(struct comedi_device *dev, struct comedi_subdevice *s)
{
if (s->private)
if (subdevpriv->have_irq)
kfree(s->private);
}
EXPORT_SYMBOL(subdev_700_cleanup);
static int dio700_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
struct comedi_subdevice *s;
unsigned long iobase = 0;
#ifdef incomplete
unsigned int irq = 0;
#endif
struct pcmcia_device *link;
/* allocate and initialize dev->private */
if (alloc_private(dev, sizeof(struct dio700_private)) < 0)
return -ENOMEM;
/* get base address, irq etc. based on bustype */
switch (thisboard->bustype) {
case pcmcia_bustype:
link = pcmcia_cur_dev; /* XXX hack */
if (!link)
return -EIO;
iobase = link->resource[0]->start;
#ifdef incomplete
irq = link->irq;
#endif
break;
default:
printk(KERN_ERR "bug! couldn't determine board type\n");
return -EINVAL;
break;
}
printk(KERN_ERR "comedi%d: ni_daq_700: %s, io 0x%lx", dev->minor,
thisboard->name, iobase);
#ifdef incomplete
if (irq)
printk(", irq %u", irq);
#endif
printk("\n");
if (iobase == 0) {
printk(KERN_ERR "io base address is zero!\n");
return -EINVAL;
}
dev->iobase = iobase;
#ifdef incomplete
/* grab our IRQ */
dev->irq = irq;
#endif
dev->board_name = thisboard->name;
if (alloc_subdevices(dev, 1) < 0)
return -ENOMEM;
/* DAQCard-700 dio */
s = dev->subdevices + 0;
subdev_700_init(dev, s, NULL, dev->iobase);
return 0;
};
static int dio700_detach(struct comedi_device *dev)
{
printk(KERN_ERR "comedi%d: ni_daq_700: cs-remove\n", dev->minor);
if (dev->subdevices)
subdev_700_cleanup(dev, dev->subdevices + 0);
if (thisboard->bustype != pcmcia_bustype && dev->iobase)
release_region(dev->iobase, DIO700_SIZE);
if (dev->irq)
free_irq(dev->irq, dev);
return 0;
};
static void dio700_config(struct pcmcia_device *link);
static void dio700_release(struct pcmcia_device *link);
static int dio700_cs_suspend(struct pcmcia_device *p_dev);
static int dio700_cs_resume(struct pcmcia_device *p_dev);
static int dio700_cs_attach(struct pcmcia_device *);
static void dio700_cs_detach(struct pcmcia_device *);
struct local_info_t {
struct pcmcia_device *link;
int stop;
struct bus_operations *bus;
};
static int dio700_cs_attach(struct pcmcia_device *link)
{
struct local_info_t *local;
printk(KERN_INFO "ni_daq_700: cs-attach\n");
dev_dbg(&link->dev, "dio700_cs_attach()\n");
/* Allocate space for private device-specific data */
local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
if (!local)
return -ENOMEM;
local->link = link;
link->priv = local;
pcmcia_cur_dev = link;
dio700_config(link);
return 0;
} /* dio700_cs_attach */
static void dio700_cs_detach(struct pcmcia_device *link)
{
printk(KERN_INFO "ni_daq_700: cs-detach!\n");
dev_dbg(&link->dev, "dio700_cs_detach\n");
((struct local_info_t *)link->priv)->stop = 1;
dio700_release(link);
/* This points to the parent struct local_info_t struct */
kfree(link->priv);
} /* dio700_cs_detach */
static int dio700_pcmcia_config_loop(struct pcmcia_device *p_dev,
void *priv_data)
{
if (p_dev->config_index == 0)
return -EINVAL;
return pcmcia_request_io(p_dev);
}
static void dio700_config(struct pcmcia_device *link)
{
int ret;
printk(KERN_INFO "ni_daq_700: cs-config\n");
dev_dbg(&link->dev, "dio700_config\n");
link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_AUDIO |
CONF_AUTO_SET_IO;
ret = pcmcia_loop_config(link, dio700_pcmcia_config_loop, NULL);
if (ret) {
dev_warn(&link->dev, "no configuration found\n");
goto failed;
}
if (!link->irq)
goto failed;
ret = pcmcia_enable_device(link);
if (ret != 0)
goto failed;
return;
failed:
printk(KERN_INFO "ni_daq_700 cs failed");
dio700_release(link);
} /* dio700_config */
static void dio700_release(struct pcmcia_device *link)
{
dev_dbg(&link->dev, "dio700_release\n");
pcmcia_disable_device(link);
} /* dio700_release */
static int dio700_cs_suspend(struct pcmcia_device *link)
{
struct local_info_t *local = link->priv;
/* Mark the device as stopped, to block IO until later */
local->stop = 1;
return 0;
} /* dio700_cs_suspend */
static int dio700_cs_resume(struct pcmcia_device *link)
{
struct local_info_t *local = link->priv;
local->stop = 0;
return 0;
} /* dio700_cs_resume */
/*====================================================================*/
static const struct pcmcia_device_id dio700_cs_ids[] = {
/* N.B. These IDs should match those in dio700_boards */
PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4743), /* daqcard-700 */
PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, dio700_cs_ids);
MODULE_AUTHOR("Fred Brooks <nsaspook@nsaspook.com>");
MODULE_DESCRIPTION("Comedi driver for National Instruments "
"PCMCIA DAQCard-700 DIO");
MODULE_LICENSE("GPL");
struct pcmcia_driver dio700_cs_driver = {
.probe = dio700_cs_attach,
.remove = dio700_cs_detach,
.suspend = dio700_cs_suspend,
.resume = dio700_cs_resume,
.id_table = dio700_cs_ids,
.owner = THIS_MODULE,
.name = "ni_daq_700",
};
static int __init init_dio700_cs(void)
{
pcmcia_register_driver(&dio700_cs_driver);
return 0;
}
static void __exit exit_dio700_cs(void)
{
pr_debug("ni_daq_700: unloading\n");
pcmcia_unregister_driver(&dio700_cs_driver);
}
int __init init_module(void)
{
int ret;
ret = init_dio700_cs();
if (ret < 0)
return ret;
return comedi_driver_register(&driver_dio700);
}
void __exit cleanup_module(void)
{
exit_dio700_cs();
comedi_driver_unregister(&driver_dio700);
}
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