1/*======================================================================
2
3    An elsa_cs PCMCIA client driver
4
5    This driver is for the Elsa PCM ISDN Cards, i.e. the MicroLink
6
7
8    The contents of this file are subject to the Mozilla Public
9    License Version 1.1 (the "License"); you may not use this file
10    except in compliance with the License. You may obtain a copy of
11    the License at http://www.mozilla.org/MPL/
12
13    Software distributed under the License is distributed on an "AS
14    IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
15    implied. See the License for the specific language governing
16    rights and limitations under the License.
17
18    The initial developer of the original code is David A. Hinds
19    <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
20    are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
21
22    Modifications from dummy_cs.c are Copyright (C) 1999-2001 Klaus
23    Lichtenwalder <Lichtenwalder@ACM.org>. All Rights Reserved.
24
25    Alternatively, the contents of this file may be used under the
26    terms of the GNU General Public License version 2 (the "GPL"), in
27    which case the provisions of the GPL are applicable instead of the
28    above.  If you wish to allow the use of your version of this file
29    only under the terms of the GPL and not to allow others to use
30    your version of this file under the MPL, indicate your decision
31    by deleting the provisions above and replace them with the notice
32    and other provisions required by the GPL.  If you do not delete
33    the provisions above, a recipient may use your version of this
34    file under either the MPL or the GPL.
35
36======================================================================*/
37
38#include <linux/module.h>
39#include <linux/kernel.h>
40#include <linux/init.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 <asm/io.h>
47#include <asm/system.h>
48
49#include <pcmcia/cistpl.h>
50#include <pcmcia/cisreg.h>
51#include <pcmcia/ds.h>
52#include "hisax_cfg.h"
53
54MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Elsa PCM cards");
55MODULE_AUTHOR("Klaus Lichtenwalder");
56MODULE_LICENSE("Dual MPL/GPL");
57
58
59/*====================================================================*/
60
61/* Parameters that can be set with 'insmod' */
62
63static int protocol = 2;        /* EURO-ISDN Default */
64module_param(protocol, int, 0);
65
66static int elsa_cs_config(struct pcmcia_device *link) __devinit ;
67static void elsa_cs_release(struct pcmcia_device *link);
68static void elsa_cs_detach(struct pcmcia_device *p_dev) __devexit;
69
70typedef struct local_info_t {
71	struct pcmcia_device	*p_dev;
72    int                 busy;
73    int			cardnr;
74} local_info_t;
75
76static int __devinit elsa_cs_probe(struct pcmcia_device *link)
77{
78    local_info_t *local;
79
80    dev_dbg(&link->dev, "elsa_cs_attach()\n");
81
82    /* Allocate space for private device-specific data */
83    local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
84    if (!local) return -ENOMEM;
85
86    local->p_dev = link;
87    link->priv = local;
88
89    local->cardnr = -1;
90
91    return elsa_cs_config(link);
92} /* elsa_cs_attach */
93
94static void __devexit elsa_cs_detach(struct pcmcia_device *link)
95{
96	local_info_t *info = link->priv;
97
98	dev_dbg(&link->dev, "elsa_cs_detach(0x%p)\n", link);
99
100	info->busy = 1;
101	elsa_cs_release(link);
102
103	kfree(info);
104} /* elsa_cs_detach */
105
106static int elsa_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data)
107{
108	int j;
109
110	p_dev->io_lines = 3;
111	p_dev->resource[0]->end = 8;
112	p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH;
113	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
114
115	if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) {
116		printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n");
117		if (!pcmcia_request_io(p_dev))
118			return 0;
119	} else {
120		printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n");
121		for (j = 0x2f0; j > 0x100; j -= 0x10) {
122			p_dev->resource[0]->start = j;
123			if (!pcmcia_request_io(p_dev))
124				return 0;
125		}
126	}
127	return -ENODEV;
128}
129
130static int __devinit elsa_cs_config(struct pcmcia_device *link)
131{
132    int i;
133    IsdnCard_t icard;
134
135    dev_dbg(&link->dev, "elsa_config(0x%p)\n", link);
136
137    link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
138
139    i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL);
140    if (i != 0)
141	goto failed;
142
143    if (!link->irq)
144	goto failed;
145
146    i = pcmcia_enable_device(link);
147    if (i != 0)
148	goto failed;
149
150    icard.para[0] = link->irq;
151    icard.para[1] = link->resource[0]->start;
152    icard.protocol = protocol;
153    icard.typ = ISDN_CTYPE_ELSA_PCMCIA;
154
155    i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
156    if (i < 0) {
157	printk(KERN_ERR "elsa_cs: failed to initialize Elsa "
158		"PCMCIA %d with %pR\n", i, link->resource[0]);
159    	elsa_cs_release(link);
160    } else
161    	((local_info_t*)link->priv)->cardnr = i;
162
163    return 0;
164failed:
165    elsa_cs_release(link);
166    return -ENODEV;
167} /* elsa_cs_config */
168
169static void elsa_cs_release(struct pcmcia_device *link)
170{
171    local_info_t *local = link->priv;
172
173    dev_dbg(&link->dev, "elsa_cs_release(0x%p)\n", link);
174
175    if (local) {
176    	if (local->cardnr >= 0) {
177    	    /* no unregister function with hisax */
178	    HiSax_closecard(local->cardnr);
179	}
180    }
181
182    pcmcia_disable_device(link);
183} /* elsa_cs_release */
184
185static int elsa_suspend(struct pcmcia_device *link)
186{
187	local_info_t *dev = link->priv;
188
189        dev->busy = 1;
190
191	return 0;
192}
193
194static int elsa_resume(struct pcmcia_device *link)
195{
196	local_info_t *dev = link->priv;
197
198        dev->busy = 0;
199
200	return 0;
201}
202
203static const struct pcmcia_device_id elsa_ids[] = {
204	PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257),
205	PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257),
206	PCMCIA_DEVICE_NULL
207};
208MODULE_DEVICE_TABLE(pcmcia, elsa_ids);
209
210static struct pcmcia_driver elsa_cs_driver = {
211	.owner		= THIS_MODULE,
212	.name		= "elsa_cs",
213	.probe		= elsa_cs_probe,
214	.remove		= __devexit_p(elsa_cs_detach),
215	.id_table	= elsa_ids,
216	.suspend	= elsa_suspend,
217	.resume		= elsa_resume,
218};
219
220static int __init init_elsa_cs(void)
221{
222	return pcmcia_register_driver(&elsa_cs_driver);
223}
224
225static void __exit exit_elsa_cs(void)
226{
227	pcmcia_unregister_driver(&elsa_cs_driver);
228}
229
230module_init(init_elsa_cs);
231module_exit(exit_elsa_cs);
232