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comedi/drivers/das08_cs.c
DAS08 driver
COMEDI - Linux Control and Measurement Device Interface
Copyright (C) 2000 David A. Schleef <ds@schleef.org>
Copyright (C) 2001,2002,2003 Frank Mori Hess <fmhess@users.sourceforge.net>
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.
PCMCIA support code for this driver is adapted from the dummy_cs.c
driver of the Linux PCMCIA Card Services package.
The initial developer of the original code is David A. Hinds
<dahinds@users.sourceforge.net>. Portions created by David A. Hinds
are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
*****************************************************************
*/
/*
Driver: das08_cs
Description: DAS-08 PCMCIA boards
Author: Warren Jasper, ds, Frank Hess
Devices: [ComputerBoards] PCM-DAS08 (pcm-das08)
Status: works
This is the PCMCIA-specific support split off from the
das08 driver.
Options (for pcm-das08):
NONE
Command support does not exist, but could be added for this board.
*/
#include "../comedidev.h"
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include "das08.h"
/* pcmcia includes */
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>
static const struct das08_board_struct das08_cs_boards[] = {
{
.name = "pcm-das08",
.id = 0x0, /* XXX */
.bustype = pcmcia,
.ai_nbits = 12,
.ai_pg = das08_bipolar5,
.ai_encoding = das08_pcm_encode12,
.di_nchan = 3,
.do_nchan = 3,
.iosize = 16,
},
/* duplicate so driver name can be used also */
{
.name = "das08_cs",
.id = 0x0, /* XXX */
.bustype = pcmcia,
.ai_nbits = 12,
.ai_pg = das08_bipolar5,
.ai_encoding = das08_pcm_encode12,
.di_nchan = 3,
.do_nchan = 3,
.iosize = 16,
},
};
static struct pcmcia_device *cur_dev;
static int das08_cs_attach(struct comedi_device *dev,
struct comedi_devconfig *it)
{
const struct das08_board_struct *thisboard = comedi_board(dev);
struct das08_private_struct *devpriv;
unsigned long iobase;
struct pcmcia_device *link = cur_dev; /* XXX hack */
devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
if (!devpriv)
return -ENOMEM;
dev->private = devpriv;
dev_info(dev->class_dev, "das08_cs: attach\n");
/* deal with a pci board */
if (thisboard->bustype == pcmcia) {
if (link == NULL) {
dev_err(dev->class_dev, "no pcmcia cards found\n");
return -EIO;
}
iobase = link->resource[0]->start;
} else {
dev_err(dev->class_dev,
"bug! board does not have PCMCIA bustype\n");
return -EINVAL;
}
return das08_common_attach(dev, iobase);
}
static struct comedi_driver driver_das08_cs = {
.driver_name = "das08_cs",
.module = THIS_MODULE,
.attach = das08_cs_attach,
.detach = das08_common_detach,
.board_name = &das08_cs_boards[0].name,
.num_names = ARRAY_SIZE(das08_cs_boards),
.offset = sizeof(struct das08_board_struct),
};
static int das08_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 int das08_pcmcia_attach(struct pcmcia_device *link)
{
int ret;
link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
ret = pcmcia_loop_config(link, das08_pcmcia_config_loop, NULL);
if (ret)
goto failed;
if (!link->irq)
goto failed;
ret = pcmcia_enable_device(link);
if (ret)
goto failed;
cur_dev = link;
return 0;
failed:
pcmcia_disable_device(link);
return ret;
}
static void das08_pcmcia_detach(struct pcmcia_device *link)
{
pcmcia_disable_device(link);
cur_dev = NULL;
}
static const struct pcmcia_device_id das08_cs_id_table[] = {
PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4001),
PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, das08_cs_id_table);
static struct pcmcia_driver das08_cs_driver = {
.name = "pcm-das08",
.owner = THIS_MODULE,
.probe = das08_pcmcia_attach,
.remove = das08_pcmcia_detach,
.id_table = das08_cs_id_table,
};
static int __init das08_cs_init_module(void)
{
int ret;
ret = comedi_driver_register(&driver_das08_cs);
if (ret < 0)
return ret;
ret = pcmcia_register_driver(&das08_cs_driver);
if (ret < 0) {
comedi_driver_unregister(&driver_das08_cs);
return ret;
}
return 0;
}
module_init(das08_cs_init_module);
static void __exit das08_cs_exit_module(void)
{
pcmcia_unregister_driver(&das08_cs_driver);
comedi_driver_unregister(&driver_das08_cs);
}
module_exit(das08_cs_exit_module);
MODULE_AUTHOR("David A. Schleef <ds@schleef.org>, "
"Frank Mori Hess <fmhess@users.sourceforge.net>");
MODULE_DESCRIPTION("Comedi driver for ComputerBoards DAS-08 PCMCIA boards");
MODULE_LICENSE("GPL");
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