[linux-2.6-block.git] / drivers / parport / parport_cs.c

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

    A driver for PCMCIA parallel port adapters

    (specifically, for the Quatech SPP-100 EPP card: other cards will
    probably require driver tweaks)
    
    parport_cs.c 1.29 2002/10/11 06:57:41

    The contents of this file are subject to the Mozilla Public
    License Version 1.1 (the "License"); you may not use this file
    except in compliance with the License. You may obtain a copy of
    the License at http://www.mozilla.org/MPL/

    Software distributed under the License is distributed on an "AS
    IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
    implied. See the License for the specific language governing
    rights and limitations under the License.

    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.

    Alternatively, the contents of this file may be used under the
    terms of the GNU General Public License version 2 (the "GPL"), in
    which case the provisions of the GPL are applicable instead of the
    above.  If you wish to allow the use of your version of this file
    only under the terms of the GPL and not to allow others to use
    your version of this file under the MPL, indicate your decision
    by deleting the provisions above and replace them with the notice
    and other provisions required by the GPL.  If you do not delete
    the provisions above, a recipient may use your version of this
    file under either the MPL or the GPL.
    
======================================================================*/

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/ioport.h>
#include <linux/major.h>

#include <linux/parport.h>
#include <linux/parport_pc.h>

#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ciscode.h>

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

/* Module parameters */

MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
MODULE_DESCRIPTION("PCMCIA parallel port card driver");
MODULE_LICENSE("Dual MPL/GPL");

#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)

INT_MODULE_PARM(epp_mode, 1);

#ifdef PCMCIA_DEBUG
INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
static char *version =
"parport_cs.c 1.29 2002/10/11 06:57:41 (David Hinds)";
#else
#define DEBUG(n, args...)
#endif

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

#define FORCE_EPP_MODE	0x08

typedef struct parport_info_t {
    dev_link_t		link;
    int			ndev;
    dev_node_t		node;
    struct parport	*port;
} parport_info_t;

static dev_link_t *parport_attach(void);
static void parport_detach(dev_link_t *);
static void parport_config(dev_link_t *link);
static void parport_cs_release(dev_link_t *);
static int parport_event(event_t event, int priority,
			 event_callback_args_t *args);

static dev_info_t dev_info = "parport_cs";
static dev_link_t *dev_list = NULL;

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

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

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

static dev_link_t *parport_attach(void)
{
    parport_info_t *info;
    dev_link_t *link;
    client_reg_t client_reg;
    int ret;
    
    DEBUG(0, "parport_attach()\n");

    /* Create new parport device */
    info = kmalloc(sizeof(*info), GFP_KERNEL);
    if (!info) return NULL;
    memset(info, 0, sizeof(*info));
    link = &info->link; link->priv = info;

    link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
    link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
    link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
    link->irq.IRQInfo1 = IRQ_LEVEL_ID;
    link->conf.Attributes = CONF_ENABLE_IRQ;
    link->conf.Vcc = 50;
    link->conf.IntType = INT_MEMORY_AND_IO;
    
    /* Register with Card Services */
    link->next = dev_list;
    dev_list = link;
    client_reg.dev_info = &dev_info;
    client_reg.Version = 0x0210;
    client_reg.event_callback_args.client_data = link;
    ret = pcmcia_register_client(&link->handle, &client_reg);
    if (ret != CS_SUCCESS) {
	cs_error(link->handle, RegisterClient, ret);
	parport_detach(link);
	return NULL;
    }
    
    return link;
} /* parport_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 parport_detach(dev_link_t *link)
{
    dev_link_t **linkp;
    int ret;

    DEBUG(0, "parport_detach(0x%p)\n", link);
    
    /* Locate device structure */
    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
	if (*linkp == link) break;
    if (*linkp == NULL)
	return;

    if (link->state & DEV_CONFIG)
	parport_cs_release(link);
    
    if (link->handle) {
	ret = pcmcia_deregister_client(link->handle);
	if (ret != CS_SUCCESS)
	    cs_error(link->handle, DeregisterClient, ret);
    }
    
    /* Unlink, free device structure */
    *linkp = link->next;
    kfree(link->priv);
    
} /* parport_detach */

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

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

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

#define CS_CHECK(fn, ret) \
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)

void parport_config(dev_link_t *link)
{
    client_handle_t handle = link->handle;
    parport_info_t *info = link->priv;
    tuple_t tuple;
    u_short buf[128];
    cisparse_t parse;
    config_info_t conf;
    cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
    cistpl_cftable_entry_t dflt = { 0 };
    struct parport *p;
    int last_ret, last_fn;
    
    DEBUG(0, "parport_config(0x%p)\n", link);
    
    tuple.TupleData = (cisdata_t *)buf;
    tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
    tuple.Attributes = 0;
    tuple.DesiredTuple = CISTPL_CONFIG;
    CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
    CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
    CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
    link->conf.ConfigBase = parse.config.base;
    link->conf.Present = parse.config.rmask[0];
    
    /* Configure card */
    link->state |= DEV_CONFIG;

    /* Not sure if this is right... look up the current Vcc */
    CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
    
    tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
    tuple.Attributes = 0;
    CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
    while (1) {
	if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
		pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
	    goto next_entry;

	if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
	    cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
	    link->conf.ConfigIndex = cfg->index;
	    if (epp_mode)
		link->conf.ConfigIndex |= FORCE_EPP_MODE;
	    link->io.BasePort1 = io->win[0].base;
	    link->io.NumPorts1 = io->win[0].len;
	    link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
	    if (io->nwin == 2) {
		link->io.BasePort2 = io->win[1].base;
		link->io.NumPorts2 = io->win[1].len;
	    }
	    if (pcmcia_request_io(link->handle, &link->io) != 0)
		goto next_entry;
	    /* If we've got this far, we're done */
	    break;
	}
	
    next_entry:
	if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
	CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
    }
    
    CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
    CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));

    release_region(link->io.BasePort1, link->io.NumPorts1);
    if (link->io.NumPorts2)
	release_region(link->io.BasePort2, link->io.NumPorts2);
    p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
			      link->irq.AssignedIRQ, PARPORT_DMA_NONE,
			      NULL);
    if (p == NULL) {
	printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
	       "0x%3x, irq %u failed\n", link->io.BasePort1,
	       link->irq.AssignedIRQ);
	goto failed;
    }

    p->modes |= PARPORT_MODE_PCSPP;
    if (epp_mode)
	p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
    info->ndev = 1;
    info->node.major = LP_MAJOR;
    info->node.minor = p->number;
    info->port = p;
    strcpy(info->node.dev_name, p->name);
    link->dev = &info->node;

    link->state &= ~DEV_CONFIG_PENDING;
    return;
    
cs_failed:
    cs_error(link->handle, last_fn, last_ret);
failed:
    parport_cs_release(link);
    link->state &= ~DEV_CONFIG_PENDING;

} /* parport_config */

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

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

void parport_cs_release(dev_link_t *link)
{
    parport_info_t *info = link->priv;
    
    DEBUG(0, "parport_release(0x%p)\n", link);

    if (info->ndev) {
	struct parport *p = info->port;
	parport_pc_unregister_port(p);
	request_region(link->io.BasePort1, link->io.NumPorts1,
		       info->node.dev_name);
	if (link->io.NumPorts2)
	    request_region(link->io.BasePort2, link->io.NumPorts2,
			   info->node.dev_name);
    }
    info->ndev = 0;
    link->dev = NULL;
    
    pcmcia_release_configuration(link->handle);
    pcmcia_release_io(link->handle, &link->io);
    pcmcia_release_irq(link->handle, &link->irq);
    
    link->state &= ~DEV_CONFIG;

} /* parport_cs_release */

static int parport_suspend(struct pcmcia_device *dev)
{
	dev_link_t *link = dev_to_instance(dev);

	link->state |= DEV_SUSPEND;
	if (link->state & DEV_CONFIG)
		pcmcia_release_configuration(link->handle);

	return 0;
}

static int parport_resume(struct pcmcia_device *dev)
{
	dev_link_t *link = dev_to_instance(dev);

	link->state &= ~DEV_SUSPEND;
	if (DEV_OK(link))
		pcmcia_request_configuration(link->handle, &link->conf);

	return 0;
}

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

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

int parport_event(event_t event, int priority,
		  event_callback_args_t *args)
{
    dev_link_t *link = args->client_data;

    DEBUG(1, "parport_event(0x%06x)\n", event);
    
    switch (event) {
    case CS_EVENT_CARD_REMOVAL:
	link->state &= ~DEV_PRESENT;
	if (link->state & DEV_CONFIG)
		parport_cs_release(link);
	break;
    case CS_EVENT_CARD_INSERTION:
	link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
	parport_config(link);
	break;
    }
    return 0;
} /* parport_event */

static struct pcmcia_device_id parport_ids[] = {
	PCMCIA_DEVICE_FUNC_ID(3),
	PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
	PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, parport_ids);

static struct pcmcia_driver parport_cs_driver = {
	.owner		= THIS_MODULE,
	.drv		= {
		.name	= "parport_cs",
	},
	.attach		= parport_attach,
	.event		= parport_event,
	.detach		= parport_detach,
	.id_table	= parport_ids,
	.suspend	= parport_suspend,
	.resume		= parport_resume,
};

static int __init init_parport_cs(void)
{
	return pcmcia_register_driver(&parport_cs_driver);
}

static void __exit exit_parport_cs(void)
{
	pcmcia_unregister_driver(&parport_cs_driver);
	BUG_ON(dev_list != NULL);
}

module_init(init_parport_cs);
module_exit(exit_parport_cs);
Commit	Line	Data
1da177e4 LT	1	/*======================================================================
	2
	3	A driver for PCMCIA parallel port adapters
	4
	5	(specifically, for the Quatech SPP-100 EPP card: other cards will
	6	probably require driver tweaks)
	7
	8	parport_cs.c 1.29 2002/10/11 06:57:41
	9
	10	The contents of this file are subject to the Mozilla Public
	11	License Version 1.1 (the "License"); you may not use this file
	12	except in compliance with the License. You may obtain a copy of
	13	the License at http://www.mozilla.org/MPL/
	14
	15	Software distributed under the License is distributed on an "AS
	16	IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
	17	implied. See the License for the specific language governing
	18	rights and limitations under the License.
	19
	20	The initial developer of the original code is David A. Hinds
	21	<dahinds@users.sourceforge.net>. Portions created by David A. Hinds
	22	are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
	23
	24	Alternatively, the contents of this file may be used under the
	25	terms of the GNU General Public License version 2 (the "GPL"), in
	26	which case the provisions of the GPL are applicable instead of the
	27	above. If you wish to allow the use of your version of this file
	28	only under the terms of the GPL and not to allow others to use
	29	your version of this file under the MPL, indicate your decision
	30	by deleting the provisions above and replace them with the notice
	31	and other provisions required by the GPL. If you do not delete
	32	the provisions above, a recipient may use your version of this
	33	file under either the MPL or the GPL.
	34
	35	======================================================================*/
	36
	37	#include <linux/kernel.h>
	38	#include <linux/module.h>
	39	#include <linux/init.h>
	40	#include <linux/sched.h>
	41	#include <linux/ptrace.h>
	42	#include <linux/slab.h>
	43	#include <linux/string.h>
	44	#include <linux/timer.h>
	45	#include <linux/ioport.h>
	46	#include <linux/major.h>
	47
	48	#include <linux/parport.h>
	49	#include <linux/parport_pc.h>
	50
1da177e4 LT	51	#include <pcmcia/cs_types.h>
	52	#include <pcmcia/cs.h>
	53	#include <pcmcia/cistpl.h>
	54	#include <pcmcia/ds.h>
	55	#include <pcmcia/cisreg.h>
	56	#include <pcmcia/ciscode.h>
	57
	58	/====================================================================/
	59
	60	/* Module parameters */
	61
	62	MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
	63	MODULE_DESCRIPTION("PCMCIA parallel port card driver");
	64	MODULE_LICENSE("Dual MPL/GPL");
	65
	66	#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
	67
	68	INT_MODULE_PARM(epp_mode, 1);
	69
	70	#ifdef PCMCIA_DEBUG
	71	INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
	72	#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
	73	static char *version =
	74	"parport_cs.c 1.29 2002/10/11 06:57:41 (David Hinds)";
	75	#else
	76	#define DEBUG(n, args...)
	77	#endif
	78
	79	/====================================================================/
	80
	81	#define FORCE_EPP_MODE 0x08
	82
	83	typedef struct parport_info_t {
	84	dev_link_t link;
	85	int ndev;
	86	dev_node_t node;
	87	struct parport *port;
	88	} parport_info_t;
	89
	90	static dev_link_t *parport_attach(void);
	91	static void parport_detach(dev_link_t *);
	92	static void parport_config(dev_link_t *link);
	93	static void parport_cs_release(dev_link_t *);
	94	static int parport_event(event_t event, int priority,
	95	event_callback_args_t *args);
	96
	97	static dev_info_t dev_info = "parport_cs";
	98	static dev_link_t *dev_list = NULL;
	99
	100	/*======================================================================
	101
	102	parport_attach() creates an "instance" of the driver, allocating
	103	local data structures for one device. The device is registered
	104	with Card Services.
	105
	106	======================================================================*/
	107
	108	static dev_link_t *parport_attach(void)
	109	{
	110	parport_info_t *info;
	111	dev_link_t *link;
	112	client_reg_t client_reg;
	113	int ret;
	114
115	DEBUG(0, "parport_attach()\n");
116
117	/* Create new parport device */
118	info = kmalloc(sizeof(*info), GFP_KERNEL);
119	if (!info) return NULL;
120	memset(info, 0, sizeof(*info));
121	link = &info->link; link->priv = info;
122
123	link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
124	link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
125	link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
126	link->irq.IRQInfo1 = IRQ_LEVEL_ID;
127	link->conf.Attributes = CONF_ENABLE_IRQ;
128	link->conf.Vcc = 50;
129	link->conf.IntType = INT_MEMORY_AND_IO;
130
131	/* Register with Card Services */
132	link->next = dev_list;
133	dev_list = link;
134	client_reg.dev_info = &dev_info;
1da177e4 LT	135	client_reg.Version = 0x0210;
	136	client_reg.event_callback_args.client_data = link;
	137	ret = pcmcia_register_client(&link->handle, &client_reg);
	138	if (ret != CS_SUCCESS) {
	139	cs_error(link->handle, RegisterClient, ret);
	140	parport_detach(link);
	141	return NULL;
	142	}
	143
	144	return link;
	145	} /* parport_attach */
	146
	147	/*======================================================================
	148
	149	This deletes a driver "instance". The device is de-registered
	150	with Card Services. If it has been released, all local data
	151	structures are freed. Otherwise, the structures will be freed
	152	when the device is released.
	153
	154	======================================================================*/
	155
	156	static void parport_detach(dev_link_t *link)
	157	{
	158	dev_link_t **linkp;
	159	int ret;
	160
	161	DEBUG(0, "parport_detach(0x%p)\n", link);
	162
	163	/* Locate device structure */
	164	for (linkp = &dev_list; linkp; linkp = &(linkp)->next)
	165	if (*linkp == link) break;
	166	if (*linkp == NULL)
	167	return;
	168
	169	if (link->state & DEV_CONFIG)
	170	parport_cs_release(link);
	171
	172	if (link->handle) {
	173	ret = pcmcia_deregister_client(link->handle);
	174	if (ret != CS_SUCCESS)
	175	cs_error(link->handle, DeregisterClient, ret);
	176	}
	177
	178	/* Unlink, free device structure */
	179	*linkp = link->next;
	180	kfree(link->priv);
	181
	182	} /* parport_detach */
	183
	184	/*======================================================================
	185
	186	parport_config() is scheduled to run after a CARD_INSERTION event
	187	is received, to configure the PCMCIA socket, and to make the
	188	parport device available to the system.
	189
	190	======================================================================*/
	191
	192	#define CS_CHECK(fn, ret) \
	193	do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
	194
	195	void parport_config(dev_link_t *link)
	196	{
	197	client_handle_t handle = link->handle;
	198	parport_info_t *info = link->priv;
199	tuple_t tuple;
200	u_short buf[128];
201	cisparse_t parse;
202	config_info_t conf;
203	cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
204	cistpl_cftable_entry_t dflt = { 0 };
205	struct parport *p;
206	int last_ret, last_fn;
207
208	DEBUG(0, "parport_config(0x%p)\n", link);
209
210	tuple.TupleData = (cisdata_t *)buf;
211	tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
212	tuple.Attributes = 0;
213	tuple.DesiredTuple = CISTPL_CONFIG;
214	CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
215	CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
216	CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
217	link->conf.ConfigBase = parse.config.base;
218	link->conf.Present = parse.config.rmask[0];
219
220	/* Configure card */
221	link->state \|= DEV_CONFIG;
222
223	/* Not sure if this is right... look up the current Vcc */
224	CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
225
226	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
227	tuple.Attributes = 0;
228	CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
229	while (1) {
230	if (pcmcia_get_tuple_data(handle, &tuple) != 0 \|\|
231	pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
232	goto next_entry;
233
234	if ((cfg->io.nwin > 0) \|\| (dflt.io.nwin > 0)) {
235	cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
236	link->conf.ConfigIndex = cfg->index;
237	if (epp_mode)
238	link->conf.ConfigIndex \|= FORCE_EPP_MODE;
239	link->io.BasePort1 = io->win[0].base;
240	link->io.NumPorts1 = io->win[0].len;
241	link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
242	if (io->nwin == 2) {
243	link->io.BasePort2 = io->win[1].base;
244	link->io.NumPorts2 = io->win[1].len;
245	}
246	if (pcmcia_request_io(link->handle, &link->io) != 0)
247	goto next_entry;
248	/* If we've got this far, we're done */
249	break;
250	}
251
252	next_entry:
253	if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
254	CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
255	}
256
257	CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
258	CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
259
260	release_region(link->io.BasePort1, link->io.NumPorts1);
261	if (link->io.NumPorts2)
262	release_region(link->io.BasePort2, link->io.NumPorts2);
263	p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
264	link->irq.AssignedIRQ, PARPORT_DMA_NONE,
265	NULL);
266	if (p == NULL) {
267	printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
268	"0x%3x, irq %u failed\n", link->io.BasePort1,
269	link->irq.AssignedIRQ);
270	goto failed;
271	}
272
273	p->modes \|= PARPORT_MODE_PCSPP;
274	if (epp_mode)
275	p->modes \|= PARPORT_MODE_TRISTATE \| PARPORT_MODE_EPP;
276	info->ndev = 1;
277	info->node.major = LP_MAJOR;
278	info->node.minor = p->number;
279	info->port = p;
280	strcpy(info->node.dev_name, p->name);
281	link->dev = &info->node;
282
283	link->state &= ~DEV_CONFIG_PENDING;
284	return;
285
286	cs_failed:
287	cs_error(link->handle, last_fn, last_ret);
288	failed:
289	parport_cs_release(link);
290	link->state &= ~DEV_CONFIG_PENDING;
291
292	} /* parport_config */
293
294	/*======================================================================
295
296	After a card is removed, parport_cs_release() will unregister the
297	device, and release the PCMCIA configuration. If the device is
298	still open, this will be postponed until it is closed.
299
300	======================================================================*/
301
302	void parport_cs_release(dev_link_t *link)
303	{
304	parport_info_t *info = link->priv;
305
306	DEBUG(0, "parport_release(0x%p)\n", link);
307
308	if (info->ndev) {
309	struct parport *p = info->port;
310	parport_pc_unregister_port(p);
311	request_region(link->io.BasePort1, link->io.NumPorts1,
312	info->node.dev_name);
313	if (link->io.NumPorts2)
314	request_region(link->io.BasePort2, link->io.NumPorts2,
315	info->node.dev_name);
316	}
317	info->ndev = 0;
318	link->dev = NULL;
319
320	pcmcia_release_configuration(link->handle);
321	pcmcia_release_io(link->handle, &link->io);
322	pcmcia_release_irq(link->handle, &link->irq);
323
324	link->state &= ~DEV_CONFIG;
325
326	} /* parport_cs_release */
327
98e4c28b DB	328	static int parport_suspend(struct pcmcia_device *dev)
	329	{
	330	dev_link_t *link = dev_to_instance(dev);
	331
	332	link->state \|= DEV_SUSPEND;
	333	if (link->state & DEV_CONFIG)
	334	pcmcia_release_configuration(link->handle);
	335
	336	return 0;
	337	}
	338
	339	static int parport_resume(struct pcmcia_device *dev)
	340	{
	341	dev_link_t *link = dev_to_instance(dev);
	342
	343	link->state &= ~DEV_SUSPEND;
	344	if (DEV_OK(link))
	345	pcmcia_request_configuration(link->handle, &link->conf);
	346
	347	return 0;
	348	}
	349
1da177e4 LT	350	/*======================================================================
	351
	352	The card status event handler. Mostly, this schedules other
	353	stuff to run after an event is received.
	354
	355	======================================================================*/
	356
	357	int parport_event(event_t event, int priority,
	358	event_callback_args_t *args)
	359	{
	360	dev_link_t *link = args->client_data;
	361
	362	DEBUG(1, "parport_event(0x%06x)\n", event);
	363
	364	switch (event) {
	365	case CS_EVENT_CARD_REMOVAL:
	366	link->state &= ~DEV_PRESENT;
	367	if (link->state & DEV_CONFIG)
	368	parport_cs_release(link);
	369	break;
	370	case CS_EVENT_CARD_INSERTION:
	371	link->state \|= DEV_PRESENT \| DEV_CONFIG_PENDING;
	372	parport_config(link);
	373	break;
1da177e4 LT	374	}
	375	return 0;
	376	} /* parport_event */
	377
476835af DB	378	static struct pcmcia_device_id parport_ids[] = {
	379	PCMCIA_DEVICE_FUNC_ID(3),
	380	PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
	381	PCMCIA_DEVICE_NULL
	382	};
	383	MODULE_DEVICE_TABLE(pcmcia, parport_ids);
	384
1da177e4 LT	385	static struct pcmcia_driver parport_cs_driver = {
	386	.owner = THIS_MODULE,
	387	.drv = {
	388	.name = "parport_cs",
	389	},
	390	.attach = parport_attach,
1e212f36	391	.event = parport_event,
1da177e4	392	.detach = parport_detach,
476835af	393	.id_table = parport_ids,
98e4c28b DB	394	.suspend = parport_suspend,
98e4c28b DB	395	.resume = parport_resume,
1da177e4 LT	396	};
	397
	398	static int __init init_parport_cs(void)
	399	{
	400	return pcmcia_register_driver(&parport_cs_driver);
	401	}
	402
	403	static void __exit exit_parport_cs(void)
	404	{
	405	pcmcia_unregister_driver(&parport_cs_driver);
	406	BUG_ON(dev_list != NULL);
	407	}
	408
	409	module_init(init_parport_cs);
	410	module_exit(exit_parport_cs);