[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / isdn / hisax / teles_cs.c

/* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */
/*======================================================================

    A teles S0 PCMCIA client driver

    Based on skeleton by David Hinds, dhinds@allegro.stanford.edu
    Written by Christof Petig, christof.petig@wtal.de
    
    Also inspired by ELSA PCMCIA driver 
    by Klaus Lichtenwalder <Lichtenwalder@ACM.org>
    
    Extentions to new hisax_pcmcia by Karsten Keil

    minor changes to be compatible with kernel 2.4.x
    by Jan.Schubert@GMX.li

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

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/ioport.h>
#include <asm/io.h>
#include <asm/system.h>

#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include "hisax_cfg.h"

MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
MODULE_LICENSE("GPL");


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

/* Parameters that can be set with 'insmod' */

static int protocol = 2;        /* EURO-ISDN Default */
module_param(protocol, int, 0);

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

/*
   The event() function is this driver's Card Services event handler.
   It will be called by Card Services when an appropriate card status
   event is received.  The config() and release() entry points are
   used to configure or release a socket, in response to card insertion
   and ejection events.  They are invoked from the teles_cs event
   handler.
*/

static int teles_cs_config(struct pcmcia_device *link) __devinit ;
static void teles_cs_release(struct pcmcia_device *link);

/*
   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 void teles_detach(struct pcmcia_device *p_dev) __devexit ;

typedef struct local_info_t {
	struct pcmcia_device	*p_dev;
    int                 busy;
    int			cardnr;
} local_info_t;

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

    teles_attach() creates an "instance" of the driver, allocatingx
    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 __devinit teles_probe(struct pcmcia_device *link)
{
    local_info_t *local;

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

    /* Allocate space for private device-specific data */
    local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
    if (!local) return -ENOMEM;
    local->cardnr = -1;

    local->p_dev = 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->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;

    return teles_cs_config(link);
} /* teles_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 __devexit teles_detach(struct pcmcia_device *link)
{
	local_info_t *info = link->priv;

	dev_dbg(&link->dev, "teles_detach(0x%p)\n", link);

	info->busy = 1;
	teles_cs_release(link);

	kfree(info);
} /* teles_detach */

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

    teles_cs_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 int teles_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data)
{
	int j;

	p_dev->io_lines = 5;
	p_dev->resource[0]->end = 96;
	p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH;
	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;

	if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) {
		printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
		if (!pcmcia_request_io(p_dev))
			return 0;
	} else {
		printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
		for (j = 0x2f0; j > 0x100; j -= 0x10) {
			p_dev->resource[0]->start = j;
			if (!pcmcia_request_io(p_dev))
				return 0;
		}
	}
	return -ENODEV;
}

static int __devinit teles_cs_config(struct pcmcia_device *link)
{
    local_info_t *dev;
    int i;
    IsdnCard_t icard;

    dev_dbg(&link->dev, "teles_config(0x%p)\n", link);
    dev = link->priv;

    i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
    if (i != 0)
	goto cs_failed;

    if (!link->irq)
        goto cs_failed;

    i = pcmcia_enable_device(link);
    if (i != 0)
      goto cs_failed;

    /* Finally, report what we've done */
    dev_info(&link->dev, "index 0x%02x:",
	    link->config_index);
    printk(", irq %d", link->irq);
    if (link->resource[0])
	printk(" & %pR", link->resource[0]);
    if (link->resource[1])
	printk(" & %pR", link->resource[1]);
    printk("\n");

    icard.para[0] = link->irq;
    icard.para[1] = link->resource[0]->start;
    icard.protocol = protocol;
    icard.typ = ISDN_CTYPE_TELESPCMCIA;
    
    i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
    if (i < 0) {
    	printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
			i, (unsigned int) link->resource[0]->start);
    	teles_cs_release(link);
	return -ENODEV;
    }

    ((local_info_t*)link->priv)->cardnr = i;
    return 0;

cs_failed:
    teles_cs_release(link);
    return -ENODEV;
} /* teles_cs_config */

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

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

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

static void teles_cs_release(struct pcmcia_device *link)
{
    local_info_t *local = link->priv;

    dev_dbg(&link->dev, "teles_cs_release(0x%p)\n", link);

    if (local) {
    	if (local->cardnr >= 0) {
    	    /* no unregister function with hisax */
	    HiSax_closecard(local->cardnr);
	}
    }

    pcmcia_disable_device(link);
} /* teles_cs_release */

static int teles_suspend(struct pcmcia_device *link)
{
	local_info_t *dev = link->priv;

        dev->busy = 1;

	return 0;
}

static int teles_resume(struct pcmcia_device *link)
{
	local_info_t *dev = link->priv;

        dev->busy = 0;

	return 0;
}


static struct pcmcia_device_id teles_ids[] = {
	PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
	PCMCIA_DEVICE_NULL,
};
MODULE_DEVICE_TABLE(pcmcia, teles_ids);

static struct pcmcia_driver teles_cs_driver = {
	.owner		= THIS_MODULE,
	.drv		= {
		.name	= "teles_cs",
	},
	.probe		= teles_probe,
	.remove		= __devexit_p(teles_detach),
	.id_table       = teles_ids,
	.suspend	= teles_suspend,
	.resume		= teles_resume,
};

static int __init init_teles_cs(void)
{
	return pcmcia_register_driver(&teles_cs_driver);
}

static void __exit exit_teles_cs(void)
{
	pcmcia_unregister_driver(&teles_cs_driver);
}

module_init(init_teles_cs);
module_exit(exit_teles_cs);
Commit	Line	Data
1da177e4 LT	1	/* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */
	2	/*======================================================================
	3
	4	A teles S0 PCMCIA client driver
	5
	6	Based on skeleton by David Hinds, dhinds@allegro.stanford.edu
	7	Written by Christof Petig, christof.petig@wtal.de
	8
	9	Also inspired by ELSA PCMCIA driver
	10	by Klaus Lichtenwalder <Lichtenwalder@ACM.org>
	11
	12	Extentions to new hisax_pcmcia by Karsten Keil
	13
	14	minor changes to be compatible with kernel 2.4.x
	15	by Jan.Schubert@GMX.li
	16
	17	======================================================================*/
	18
	19	#include <linux/kernel.h>
	20	#include <linux/module.h>
	21	#include <linux/init.h>
1da177e4 LT	22	#include <linux/ptrace.h>
	23	#include <linux/slab.h>
	24	#include <linux/string.h>
	25	#include <linux/timer.h>
	26	#include <linux/ioport.h>
	27	#include <asm/io.h>
	28	#include <asm/system.h>
	29
1da177e4 LT	30	#include <pcmcia/cistpl.h>
	31	#include <pcmcia/cisreg.h>
	32	#include <pcmcia/ds.h>
	33	#include "hisax_cfg.h"
	34
	35	MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
	36	MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
	37	MODULE_LICENSE("GPL");
	38
1da177e4 LT	39
	40	/====================================================================/
	41
	42	/* Parameters that can be set with 'insmod' */
	43
	44	static int protocol = 2; /* EURO-ISDN Default */
	45	module_param(protocol, int, 0);
	46
	47	/====================================================================/
	48
	49	/*
	50	The event() function is this driver's Card Services event handler.
	51	It will be called by Card Services when an appropriate card status
	52	event is received. The config() and release() entry points are
	53	used to configure or release a socket, in response to card insertion
	54	and ejection events. They are invoked from the teles_cs event
	55	handler.
	56	*/
	57
158e33d1	58	static int teles_cs_config(struct pcmcia_device *link) __devinit ;
fba395ee	59	static void teles_cs_release(struct pcmcia_device *link);
1da177e4 LT	60
	61	/*
	62	The attach() and detach() entry points are used to create and destroy
	63	"instances" of the driver, where each instance represents everything
	64	needed to manage one actual PCMCIA card.
	65	*/
	66
158e33d1	67	static void teles_detach(struct pcmcia_device *p_dev) __devexit ;
1da177e4	68
1da177e4	69	typedef struct local_info_t {
fd238232	70	struct pcmcia_device *p_dev;
1da177e4 LT	71	int busy;
	72	int cardnr;
	73	} local_info_t;
	74
	75	/*======================================================================
	76
	77	teles_attach() creates an "instance" of the driver, allocatingx
	78	local data structures for one device. The device is registered
	79	with Card Services.
	80
	81	The dev_link structure is initialized, but we don't actually
	82	configure the card at this point -- we wait until we receive a
	83	card insertion event.
	84
	85	======================================================================*/
	86
158e33d1	87	static int __devinit teles_probe(struct pcmcia_device *link)
1da177e4	88	{
1da177e4	89	local_info_t *local;
1da177e4	90
e773cfe1	91	dev_dbg(&link->dev, "teles_attach()\n");
1da177e4 LT	92
1da177e4 LT	93	/* Allocate space for private device-specific data */
41f96935	94	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
f8cfa618	95	if (!local) return -ENOMEM;
1da177e4	96	local->cardnr = -1;
fd238232	97
fba395ee	98	local->p_dev = link;
fd238232	99	link->priv = local;
1da177e4	100
1da177e4 LT	101	/*
	102	General socket configuration defaults can go here. In this
	103	client, we assume very little, and rely on the CIS for almost
	104	everything. In most clients, many details (i.e., number, sizes,
	105	and attributes of IO windows) are fixed by the nature of the
	106	device, and can be hard-wired here.
	107	*/
00990e7c	108	link->config_flags \|= CONF_ENABLE_IRQ \| CONF_AUTO_SET_IO;
1da177e4	109
15b99ac1	110	return teles_cs_config(link);
1da177e4 LT	111	} /* teles_attach */
	112
	113	/*======================================================================
	114
	115	This deletes a driver "instance". The device is de-registered
	116	with Card Services. If it has been released, all local data
	117	structures are freed. Otherwise, the structures will be freed
	118	when the device is released.
	119
	120	======================================================================*/
	121
158e33d1	122	static void __devexit teles_detach(struct pcmcia_device *link)
1da177e4	123	{
e2d40963	124	local_info_t *info = link->priv;
1da177e4	125
e773cfe1	126	dev_dbg(&link->dev, "teles_detach(0x%p)\n", link);
1da177e4	127
e2d40963 DB	128	info->busy = 1;
e2d40963 DB	129	teles_cs_release(link);
1da177e4	130
e2d40963	131	kfree(info);
1da177e4 LT	132	} /* teles_detach */
	133
	134	/*======================================================================
	135
	136	teles_cs_config() is scheduled to run after a CARD_INSERTION event
	137	is received, to configure the PCMCIA socket, and to make the
	138	device available to the system.
	139
	140	======================================================================*/
1da177e4	141
00990e7c	142	static int teles_cs_configcheck(struct pcmcia_device p_dev, void priv_data)
1da177e4	143	{
5fcd4da0 DB	144	int j;
5fcd4da0 DB	145
90abdc3b	146	p_dev->io_lines = 5;
00990e7c DB	147	p_dev->resource[0]->end = 96;
	148	p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH;
	149	p_dev->resource[0]->flags \|= IO_DATA_PATH_WIDTH_AUTO;
90abdc3b	150
00990e7c	151	if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) {
5fcd4da0	152	printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
90abdc3b	153	if (!pcmcia_request_io(p_dev))
5fcd4da0 DB	154	return 0;
	155	} else {
	156	printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
5fcd4da0	157	for (j = 0x2f0; j > 0x100; j -= 0x10) {
90abdc3b DB	158	p_dev->resource[0]->start = j;
90abdc3b DB	159	if (!pcmcia_request_io(p_dev))
5fcd4da0 DB	160	return 0;
	161	}
	162	}
	163	return -ENODEV;
1da177e4 LT	164	}
1da177e4 LT	165
158e33d1	166	static int __devinit teles_cs_config(struct pcmcia_device *link)
1da177e4	167	{
1da177e4	168	local_info_t *dev;
e773cfe1	169	int i;
1da177e4 LT	170	IsdnCard_t icard;
1da177e4 LT	171
e773cfe1	172	dev_dbg(&link->dev, "teles_config(0x%p)\n", link);
1da177e4 LT	173	dev = link->priv;
1da177e4 LT	174
5fcd4da0	175	i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
e773cfe1	176	if (i != 0)
1da177e4	177	goto cs_failed;
1da177e4	178
eb14120f	179	if (!link->irq)
1da177e4	180	goto cs_failed;
1da177e4	181
1ac71e5a	182	i = pcmcia_enable_device(link);
e773cfe1	183	if (i != 0)
1da177e4	184	goto cs_failed;
1da177e4	185
1da177e4	186	/* Finally, report what we've done */
ded6a1a3	187	dev_info(&link->dev, "index 0x%02x:",
7feabb64	188	link->config_index);
1ac71e5a	189	printk(", irq %d", link->irq);
9a017a91 DB	190	if (link->resource[0])
	191	printk(" & %pR", link->resource[0]);
	192	if (link->resource[1])
	193	printk(" & %pR", link->resource[1]);
1da177e4 LT	194	printk("\n");
1da177e4 LT	195
eb14120f	196	icard.para[0] = link->irq;
9a017a91	197	icard.para[1] = link->resource[0]->start;
1da177e4 LT	198	icard.protocol = protocol;
	199	icard.typ = ISDN_CTYPE_TELESPCMCIA;
	200
	201	i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
	202	if (i < 0) {
	203	printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
9a017a91	204	i, (unsigned int) link->resource[0]->start);
1da177e4	205	teles_cs_release(link);
15b99ac1 DB	206	return -ENODEV;
	207	}
	208
	209	((local_info_t*)link->priv)->cardnr = i;
	210	return 0;
1da177e4	211
1da177e4	212	cs_failed:
1da177e4	213	teles_cs_release(link);
15b99ac1	214	return -ENODEV;
1da177e4 LT	215	} /* teles_cs_config */
	216
	217	/*======================================================================
	218
	219	After a card is removed, teles_cs_release() will unregister the net
	220	device, and release the PCMCIA configuration. If the device is
	221	still open, this will be postponed until it is closed.
	222
	223	======================================================================*/
	224
fba395ee	225	static void teles_cs_release(struct pcmcia_device *link)
1da177e4 LT	226	{
	227	local_info_t *local = link->priv;
	228
e773cfe1	229	dev_dbg(&link->dev, "teles_cs_release(0x%p)\n", link);
1da177e4 LT	230
	231	if (local) {
	232	if (local->cardnr >= 0) {
	233	/* no unregister function with hisax */
	234	HiSax_closecard(local->cardnr);
	235	}
	236	}
5f2a71fc	237
fba395ee	238	pcmcia_disable_device(link);
1da177e4 LT	239	} /* teles_cs_release */
1da177e4 LT	240
fba395ee	241	static int teles_suspend(struct pcmcia_device *link)
98e4c28b	242	{
98e4c28b DB	243	local_info_t *dev = link->priv;
98e4c28b DB	244
98e4c28b	245	dev->busy = 1;
98e4c28b DB	246
	247	return 0;
	248	}
	249
fba395ee	250	static int teles_resume(struct pcmcia_device *link)
98e4c28b	251	{
98e4c28b DB	252	local_info_t *dev = link->priv;
98e4c28b DB	253
98e4c28b DB	254	dev->busy = 0;
	255
	256	return 0;
	257	}
	258
1da177e4	259
0a10d73d DB	260	static struct pcmcia_device_id teles_ids[] = {
	261	PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
	262	PCMCIA_DEVICE_NULL,
	263	};
	264	MODULE_DEVICE_TABLE(pcmcia, teles_ids);
	265
1da177e4 LT	266	static struct pcmcia_driver teles_cs_driver = {
	267	.owner = THIS_MODULE,
	268	.drv = {
	269	.name = "teles_cs",
	270	},
15b99ac1	271	.probe = teles_probe,
158e33d1	272	.remove = __devexit_p(teles_detach),
0a10d73d	273	.id_table = teles_ids,
98e4c28b DB	274	.suspend = teles_suspend,
98e4c28b DB	275	.resume = teles_resume,
1da177e4 LT	276	};
	277
	278	static int __init init_teles_cs(void)
	279	{
	280	return pcmcia_register_driver(&teles_cs_driver);
	281	}
	282
	283	static void __exit exit_teles_cs(void)
	284	{
	285	pcmcia_unregister_driver(&teles_cs_driver);
1da177e4 LT	286	}
	287
	288	module_init(init_teles_cs);
	289	module_exit(exit_teles_cs);