[net-next-2.6.git] / drivers / staging / comedi / drivers / das08_cs.c

/*
    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.

*****************************************************************

*/
/*
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/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>

static struct pcmcia_device *cur_dev;

#define thisboard ((const struct das08_board_struct *)dev->board_ptr)

static int das08_cs_attach(struct comedi_device *dev,
			   struct comedi_devconfig *it);

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_cs_attach(struct comedi_device *dev,
			   struct comedi_devconfig *it)
{
	int ret;
	unsigned long iobase;
	struct pcmcia_device *link = cur_dev;	/*  XXX hack */

	ret = alloc_private(dev, sizeof(struct das08_private_struct));
	if (ret < 0)
		return ret;

	printk("comedi%d: das08_cs: ", dev->minor);
	/*  deal with a pci board */

	if (thisboard->bustype == pcmcia) {
		if (link == NULL) {
			printk(" no pcmcia cards found\n");
			return -EIO;
		}
		iobase = link->resource[0]->start;
	} else {
		printk(" bug! board does not have PCMCIA bustype\n");
		return -EINVAL;
	}

	printk("\n");

	return das08_common_attach(dev, iobase);
}

/*======================================================================

    The following pcmcia code for the pcm-das08 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.

======================================================================*/

static void das08_pcmcia_config(struct pcmcia_device *link);
static void das08_pcmcia_release(struct pcmcia_device *link);
static int das08_pcmcia_suspend(struct pcmcia_device *p_dev);
static int das08_pcmcia_resume(struct pcmcia_device *p_dev);

/*
   The attach() and detach() entry points are used to create and destroy
   "instances" of the driver, where each instance represents everything
   needed to manage one actual PCMCIA card.
*/

static int das08_pcmcia_attach(struct pcmcia_device *);
static void das08_pcmcia_detach(struct pcmcia_device *);

/*
   You'll also need to prototype all the functions that will actually
   be used to talk to your device.  See 'memory_cs' for a good example
   of a fully self-sufficient driver; the other drivers rely more or
   less on other parts of the kernel.
*/

/*
   The dev_info variable is the "key" that is used to match up this
   device driver with appropriate cards, through the card configuration
   database.
*/

static const dev_info_t dev_info = "pcm-das08";

struct local_info_t {
	struct pcmcia_device *link;
	int stop;
	struct bus_operations *bus;
};

/*======================================================================

    das08_pcmcia_attach() creates an "instance" of the driver, allocating
    local data structures for one device.  The device is registered
    with Card Services.

    The dev_link structure is initialized, but we don't actually
    configure the card at this point -- we wait until we receive a
    card insertion event.

======================================================================*/

static int das08_pcmcia_attach(struct pcmcia_device *link)
{
	struct local_info_t *local;

	dev_dbg(&link->dev, "das08_pcmcia_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;

	/*
	   General socket configuration defaults can go here.  In this
	   client, we assume very little, and rely on the CIS for almost
	   everything.  In most clients, many details (i.e., number, sizes,
	   and attributes of IO windows) are fixed by the nature of the
	   device, and can be hard-wired here.
	 */
	link->conf.Attributes = 0;
	link->conf.IntType = INT_MEMORY_AND_IO;

	cur_dev = link;

	das08_pcmcia_config(link);

	return 0;
}				/* das08_pcmcia_attach */

/*======================================================================

    This deletes a driver "instance".  The device is de-registered
    with Card Services.  If it has been released, all local data
    structures are freed.  Otherwise, the structures will be freed
    when the device is released.

======================================================================*/

static void das08_pcmcia_detach(struct pcmcia_device *link)
{

	dev_dbg(&link->dev, "das08_pcmcia_detach\n");

	((struct local_info_t *)link->priv)->stop = 1;
	das08_pcmcia_release(link);

	/* This points to the parent struct local_info_t struct */
	if (link->priv)
		kfree(link->priv);

}				/* das08_pcmcia_detach */


static int das08_pcmcia_config_loop(struct pcmcia_device *p_dev,
				cistpl_cftable_entry_t *cfg,
				cistpl_cftable_entry_t *dflt,
				unsigned int vcc,
				void *priv_data)
{
	if (cfg->index == 0)
		return -ENODEV;

	/* Do we need to allocate an interrupt? */
	p_dev->conf.Attributes |= CONF_ENABLE_IRQ;

	/* IO window settings */
	p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
	if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
		cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
		p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
		p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
		p_dev->resource[0]->flags |=
			pcmcia_io_cfg_data_width(io->flags);
		p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
		p_dev->resource[0]->start = io->win[0].base;
		p_dev->resource[0]->end = io->win[0].len;
		if (io->nwin > 1) {
			p_dev->resource[1]->flags = p_dev->resource[0]->flags;
			p_dev->resource[1]->start = io->win[1].base;
			p_dev->resource[1]->end = io->win[1].len;
		}
		/* This reserves IO space but doesn't actually enable it */
		return pcmcia_request_io(p_dev);
	}
	return 0;
}


/*======================================================================

    das08_pcmcia_config() is scheduled to run after a CARD_INSERTION event
    is received, to configure the PCMCIA socket, and to make the
    device available to the system.

======================================================================*/

static void das08_pcmcia_config(struct pcmcia_device *link)
{
	int ret;

	dev_dbg(&link->dev, "das08_pcmcia_config\n");

	ret = pcmcia_loop_config(link, das08_pcmcia_config_loop, NULL);
	if (ret) {
		dev_warn(&link->dev, "no configuration found\n");
		goto failed;
	}

	if (!link->irq)
		goto failed;

	/*
	   This actually configures the PCMCIA socket -- setting up
	   the I/O windows and the interrupt mapping, and putting the
	   card and host interface into "Memory and IO" mode.
	 */
	ret = pcmcia_request_configuration(link, &link->conf);
	if (ret)
		goto failed;

	/* Finally, report what we've done */
	dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex);
	if (link->conf.Attributes & CONF_ENABLE_IRQ)
		printk(", irq %u", link->irq);
	if (link->resource[0])
		printk(", io %pR", link->resource[0]);
	if (link->resource[1])
		printk(" & %pR", link->resource[1]);
	printk("\n");

	return;

failed:
	das08_pcmcia_release(link);

}				/* das08_pcmcia_config */

/*======================================================================

    After a card is removed, das08_pcmcia_release() will unregister the
    device, and release the PCMCIA configuration.  If the device is
    still open, this will be postponed until it is closed.

======================================================================*/

static void das08_pcmcia_release(struct pcmcia_device *link)
{
	dev_dbg(&link->dev, "das08_pcmcia_release\n");
	pcmcia_disable_device(link);
}				/* das08_pcmcia_release */

/*======================================================================

    The card status event handler.  Mostly, this schedules other
    stuff to run after an event is received.

    When a CARD_REMOVAL event is received, we immediately set a
    private flag to block future accesses to this device.  All the
    functions that actually access the device should check this flag
    to make sure the card is still present.

======================================================================*/

static int das08_pcmcia_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;
}				/* das08_pcmcia_suspend */

static int das08_pcmcia_resume(struct pcmcia_device *link)
{
	struct local_info_t *local = link->priv;

	local->stop = 0;
	return 0;
}				/* das08_pcmcia_resume */

/*====================================================================*/

static 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);
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");

struct pcmcia_driver das08_cs_driver = {
	.probe = das08_pcmcia_attach,
	.remove = das08_pcmcia_detach,
	.suspend = das08_pcmcia_suspend,
	.resume = das08_pcmcia_resume,
	.id_table = das08_cs_id_table,
	.owner = THIS_MODULE,
	.drv = {
		.name = dev_info,
		},
};

static int __init init_das08_pcmcia_cs(void)
{
	pcmcia_register_driver(&das08_cs_driver);
	return 0;
}

static void __exit exit_das08_pcmcia_cs(void)
{
	pr_debug("das08_pcmcia_cs: unloading\n");
	pcmcia_unregister_driver(&das08_cs_driver);
}

static int __init das08_cs_init_module(void)
{
	int ret;

	ret = init_das08_pcmcia_cs();
	if (ret < 0)
		return ret;

	return comedi_driver_register(&driver_das08_cs);
}

static void __exit das08_cs_exit_module(void)
{
	exit_das08_pcmcia_cs();
	comedi_driver_unregister(&driver_das08_cs);
}

module_init(das08_cs_init_module);
module_exit(das08_cs_exit_module);
Commit	Line	Data
0882eaa6 DS	1	/*
	2	comedi/drivers/das08_cs.c
	3	DAS08 driver
	4
	5	COMEDI - Linux Control and Measurement Device Interface
	6	Copyright (C) 2000 David A. Schleef <ds@schleef.org>
	7	Copyright (C) 2001,2002,2003 Frank Mori Hess <fmhess@users.sourceforge.net>
	8
	9	This program is free software; you can redistribute it and/or modify
	10	it under the terms of the GNU General Public License as published by
	11	the Free Software Foundation; either version 2 of the License, or
	12	(at your option) any later version.
	13
	14	This program is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU General Public License for more details.
	18
	19	You should have received a copy of the GNU General Public License
	20	along with this program; if not, write to the Free Software
	21	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	22
	23	*****************************************************************
	24
	25	*/
	26	/*
	27	Driver: das08_cs
	28	Description: DAS-08 PCMCIA boards
	29	Author: Warren Jasper, ds, Frank Hess
	30	Devices: [ComputerBoards] PCM-DAS08 (pcm-das08)
	31	Status: works
	32
	33	This is the PCMCIA-specific support split off from the
	34	das08 driver.
	35
	36	Options (for pcm-das08):
d539047c	37	NONE
0882eaa6 DS	38
	39	Command support does not exist, but could be added for this board.
	40	*/
	41
	42	#include "../comedidev.h"
	43
	44	#include <linux/delay.h>
	45	#include <linux/pci.h>
5a0e3ad6	46	#include <linux/slab.h>
0882eaa6 DS	47
	48	#include "das08.h"
	49
2696fb57	50	/* pcmcia includes */
0882eaa6 DS	51	#include <pcmcia/cs.h>
	52	#include <pcmcia/cistpl.h>
	53	#include <pcmcia/ds.h>
	54
d539047c	55	static struct pcmcia_device *cur_dev;
0882eaa6 DS	56
	57	#define thisboard ((const struct das08_board_struct *)dev->board_ptr)
	58
0a85b6f0 MT	59	static int das08_cs_attach(struct comedi_device *dev,
0a85b6f0 MT	60	struct comedi_devconfig *it);
0882eaa6	61
139dfbdf	62	static struct comedi_driver driver_das08_cs = {
68c3dbff BP	63	.driver_name = "das08_cs",
	64	.module = THIS_MODULE,
	65	.attach = das08_cs_attach,
	66	.detach = das08_common_detach,
	67	.board_name = &das08_cs_boards[0].name,
b6ac1613	68	.num_names = ARRAY_SIZE(das08_cs_boards),
68c3dbff	69	.offset = sizeof(struct das08_board_struct),
0882eaa6 DS	70	};
0882eaa6 DS	71
0a85b6f0 MT	72	static int das08_cs_attach(struct comedi_device *dev,
0a85b6f0 MT	73	struct comedi_devconfig *it)
0882eaa6 DS	74	{
	75	int ret;
	76	unsigned long iobase;
2696fb57	77	struct pcmcia_device link = cur_dev; / XXX hack */
0882eaa6	78
c3744138 BP	79	ret = alloc_private(dev, sizeof(struct das08_private_struct));
c3744138 BP	80	if (ret < 0)
0882eaa6 DS	81	return ret;
	82
	83	printk("comedi%d: das08_cs: ", dev->minor);
2696fb57	84	/* deal with a pci board */
0882eaa6 DS	85
	86	if (thisboard->bustype == pcmcia) {
	87	if (link == NULL) {
	88	printk(" no pcmcia cards found\n");
	89	return -EIO;
	90	}
9a017a91	91	iobase = link->resource[0]->start;
0882eaa6 DS	92	} else {
	93	printk(" bug! board does not have PCMCIA bustype\n");
	94	return -EINVAL;
	95	}
	96
	97	printk("\n");
	98
	99	return das08_common_attach(dev, iobase);
	100	}
	101
	102	/*======================================================================
	103
	104	The following pcmcia code for the pcm-das08 is adapted from the
	105	dummy_cs.c driver of the Linux PCMCIA Card Services package.
	106
	107	The initial developer of the original code is David A. Hinds
	108	<dahinds@users.sourceforge.net>. Portions created by David A. Hinds
	109	are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
	110
	111	======================================================================*/
	112
0882eaa6 DS	113	static void das08_pcmcia_config(struct pcmcia_device *link);
	114	static void das08_pcmcia_release(struct pcmcia_device *link);
	115	static int das08_pcmcia_suspend(struct pcmcia_device *p_dev);
	116	static int das08_pcmcia_resume(struct pcmcia_device *p_dev);
	117
	118	/*
	119	The attach() and detach() entry points are used to create and destroy
	120	"instances" of the driver, where each instance represents everything
	121	needed to manage one actual PCMCIA card.
	122	*/
	123
	124	static int das08_pcmcia_attach(struct pcmcia_device *);
	125	static void das08_pcmcia_detach(struct pcmcia_device *);
	126
	127	/*
	128	You'll also need to prototype all the functions that will actually
	129	be used to talk to your device. See 'memory_cs' for a good example
	130	of a fully self-sufficient driver; the other drivers rely more or
	131	less on other parts of the kernel.
	132	*/
	133
	134	/*
	135	The dev_info variable is the "key" that is used to match up this
	136	device driver with appropriate cards, through the card configuration
	137	database.
	138	*/
	139
	140	static const dev_info_t dev_info = "pcm-das08";
	141
d8961467	142	struct local_info_t {
0882eaa6	143	struct pcmcia_device *link;
0882eaa6 DS	144	int stop;
0882eaa6 DS	145	struct bus_operations *bus;
d8961467	146	};
0882eaa6 DS	147
	148	/*======================================================================
	149
	150	das08_pcmcia_attach() creates an "instance" of the driver, allocating
	151	local data structures for one device. The device is registered
	152	with Card Services.
	153
	154	The dev_link structure is initialized, but we don't actually
	155	configure the card at this point -- we wait until we receive a
	156	card insertion event.
	157
	158	======================================================================*/
	159
	160	static int das08_pcmcia_attach(struct pcmcia_device *link)
	161	{
d8961467	162	struct local_info_t *local;
0882eaa6	163
55a19b39	164	dev_dbg(&link->dev, "das08_pcmcia_attach()\n");
0882eaa6 DS	165
0882eaa6 DS	166	/* Allocate space for private device-specific data */
d8961467	167	local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
0882eaa6 DS	168	if (!local)
	169	return -ENOMEM;
	170	local->link = link;
	171	link->priv = local;
	172
0882eaa6 DS	173	/*
	174	General socket configuration defaults can go here. In this
	175	client, we assume very little, and rely on the CIS for almost
	176	everything. In most clients, many details (i.e., number, sizes,
	177	and attributes of IO windows) are fixed by the nature of the
	178	device, and can be hard-wired here.
	179	*/
	180	link->conf.Attributes = 0;
	181	link->conf.IntType = INT_MEMORY_AND_IO;
	182
	183	cur_dev = link;
	184
	185	das08_pcmcia_config(link);
	186
	187	return 0;
	188	} /* das08_pcmcia_attach */
	189
	190	/*======================================================================
	191
	192	This deletes a driver "instance". The device is de-registered
	193	with Card Services. If it has been released, all local data
	194	structures are freed. Otherwise, the structures will be freed
	195	when the device is released.
	196
	197	======================================================================*/
	198
	199	static void das08_pcmcia_detach(struct pcmcia_device *link)
	200	{
	201
55a19b39	202	dev_dbg(&link->dev, "das08_pcmcia_detach\n");
0882eaa6	203
df3f97a2 JMC	204	((struct local_info_t *)link->priv)->stop = 1;
df3f97a2 JMC	205	das08_pcmcia_release(link);
0882eaa6	206
d8961467	207	/* This points to the parent struct local_info_t struct */
0882eaa6 DS	208	if (link->priv)
	209	kfree(link->priv);
	210
	211	} /* das08_pcmcia_detach */
	212
55a19b39 DB	213
	214	static int das08_pcmcia_config_loop(struct pcmcia_device *p_dev,
	215	cistpl_cftable_entry_t *cfg,
	216	cistpl_cftable_entry_t *dflt,
	217	unsigned int vcc,
	218	void *priv_data)
	219	{
	220	if (cfg->index == 0)
	221	return -ENODEV;
	222
	223	/* Do we need to allocate an interrupt? */
eb14120f	224	p_dev->conf.Attributes \|= CONF_ENABLE_IRQ;
55a19b39 DB	225
55a19b39 DB	226	/* IO window settings */
90abdc3b	227	p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
55a19b39 DB	228	if ((cfg->io.nwin > 0) \|\| (dflt->io.nwin > 0)) {
55a19b39 DB	229	cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
90abdc3b DB	230	p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
	231	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
	232	p_dev->resource[0]->flags \|=
	233	pcmcia_io_cfg_data_width(io->flags);
55a19b39	234	p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
90abdc3b DB	235	p_dev->resource[0]->start = io->win[0].base;
90abdc3b DB	236	p_dev->resource[0]->end = io->win[0].len;
55a19b39	237	if (io->nwin > 1) {
90abdc3b DB	238	p_dev->resource[1]->flags = p_dev->resource[0]->flags;
	239	p_dev->resource[1]->start = io->win[1].base;
	240	p_dev->resource[1]->end = io->win[1].len;
55a19b39 DB	241	}
55a19b39 DB	242	/* This reserves IO space but doesn't actually enable it */
90abdc3b	243	return pcmcia_request_io(p_dev);
55a19b39 DB	244	}
	245	return 0;
	246	}
	247
	248
0882eaa6 DS	249	/*======================================================================
	250
	251	das08_pcmcia_config() is scheduled to run after a CARD_INSERTION event
	252	is received, to configure the PCMCIA socket, and to make the
	253	device available to the system.
	254
	255	======================================================================*/
	256
	257	static void das08_pcmcia_config(struct pcmcia_device *link)
	258	{
55a19b39	259	int ret;
0882eaa6	260
55a19b39	261	dev_dbg(&link->dev, "das08_pcmcia_config\n");
c3744138	262
55a19b39 DB	263	ret = pcmcia_loop_config(link, das08_pcmcia_config_loop, NULL);
	264	if (ret) {
	265	dev_warn(&link->dev, "no configuration found\n");
	266	goto failed;
0882eaa6 DS	267	}
0882eaa6 DS	268
eb14120f DB	269	if (!link->irq)
eb14120f DB	270	goto failed;
0882eaa6 DS	271
	272	/*
	273	This actually configures the PCMCIA socket -- setting up
	274	the I/O windows and the interrupt mapping, and putting the
	275	card and host interface into "Memory and IO" mode.
	276	*/
55a19b39 DB	277	ret = pcmcia_request_configuration(link, &link->conf);
	278	if (ret)
	279	goto failed;
0882eaa6	280
0882eaa6	281	/* Finally, report what we've done */
df3f97a2	282	dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex);
0882eaa6	283	if (link->conf.Attributes & CONF_ENABLE_IRQ)
eb14120f	284	printk(", irq %u", link->irq);
9a017a91 DB	285	if (link->resource[0])
	286	printk(", io %pR", link->resource[0]);
	287	if (link->resource[1])
	288	printk(" & %pR", link->resource[1]);
0882eaa6 DS	289	printk("\n");
	290
	291	return;
	292
55a19b39	293	failed:
0882eaa6 DS	294	das08_pcmcia_release(link);
	295
	296	} /* das08_pcmcia_config */
	297
	298	/*======================================================================
	299
	300	After a card is removed, das08_pcmcia_release() will unregister the
	301	device, and release the PCMCIA configuration. If the device is
	302	still open, this will be postponed until it is closed.
	303
	304	======================================================================*/
	305
	306	static void das08_pcmcia_release(struct pcmcia_device *link)
	307	{
55a19b39	308	dev_dbg(&link->dev, "das08_pcmcia_release\n");
0882eaa6 DS	309	pcmcia_disable_device(link);
	310	} /* das08_pcmcia_release */
	311
	312	/*======================================================================
	313
	314	The card status event handler. Mostly, this schedules other
	315	stuff to run after an event is received.
	316
	317	When a CARD_REMOVAL event is received, we immediately set a
	318	private flag to block future accesses to this device. All the
	319	functions that actually access the device should check this flag
	320	to make sure the card is still present.
	321
	322	======================================================================*/
	323
	324	static int das08_pcmcia_suspend(struct pcmcia_device *link)
	325	{
d8961467	326	struct local_info_t *local = link->priv;
0882eaa6 DS	327	/* Mark the device as stopped, to block IO until later */
	328	local->stop = 1;
	329
	330	return 0;
	331	} /* das08_pcmcia_suspend */
	332
	333	static int das08_pcmcia_resume(struct pcmcia_device *link)
	334	{
d8961467	335	struct local_info_t *local = link->priv;
0882eaa6 DS	336
	337	local->stop = 0;
	338	return 0;
	339	} /* das08_pcmcia_resume */
	340
	341	/====================================================================/
	342
	343	static struct pcmcia_device_id das08_cs_id_table[] = {
	344	PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4001),
	345	PCMCIA_DEVICE_NULL
	346	};
	347
	348	MODULE_DEVICE_TABLE(pcmcia, das08_cs_id_table);
6c7f8196 AK	349	MODULE_AUTHOR("David A. Schleef <ds@schleef.org>, "
	350	"Frank Mori Hess <fmhess@users.sourceforge.net>");
	351	MODULE_DESCRIPTION("Comedi driver for ComputerBoards DAS-08 PCMCIA boards");
	352	MODULE_LICENSE("GPL");
0882eaa6 DS	353
	354	struct pcmcia_driver das08_cs_driver = {
	355	.probe = das08_pcmcia_attach,
	356	.remove = das08_pcmcia_detach,
	357	.suspend = das08_pcmcia_suspend,
	358	.resume = das08_pcmcia_resume,
	359	.id_table = das08_cs_id_table,
	360	.owner = THIS_MODULE,
	361	.drv = {
0a85b6f0	362	.name = dev_info,
0882eaa6 DS	363	},
	364	};
	365
	366	static int __init init_das08_pcmcia_cs(void)
	367	{
0882eaa6 DS	368	pcmcia_register_driver(&das08_cs_driver);
	369	return 0;
	370	}
	371
	372	static void __exit exit_das08_pcmcia_cs(void)
	373	{
55a19b39	374	pr_debug("das08_pcmcia_cs: unloading\n");
0882eaa6 DS	375	pcmcia_unregister_driver(&das08_cs_driver);
	376	}
	377
	378	static int __init das08_cs_init_module(void)
	379	{
	380	int ret;
	381
	382	ret = init_das08_pcmcia_cs();
	383	if (ret < 0)
	384	return ret;
	385
	386	return comedi_driver_register(&driver_das08_cs);
	387	}
	388
	389	static void __exit das08_cs_exit_module(void)
	390	{
	391	exit_das08_pcmcia_cs();
	392	comedi_driver_unregister(&driver_das08_cs);
	393	}
	394
0882eaa6 DS	395	module_init(das08_cs_init_module);
0882eaa6 DS	396	module_exit(das08_cs_exit_module);