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
54 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Elsa PCM cards");
55 MODULE_AUTHOR("Klaus Lichtenwalder");
56 MODULE_LICENSE("Dual MPL/GPL");
57
58
59 /*====================================================================*/
60
61 /* Parameters that can be set with 'insmod' */
62
63 static int protocol = 2; /* EURO-ISDN Default */
64 module_param(protocol, int, 0);
65
66 static int elsa_cs_config(struct pcmcia_device *link) __devinit ;
67 static void elsa_cs_release(struct pcmcia_device *link);
68 static void elsa_cs_detach(struct pcmcia_device *p_dev) __devexit;
69
70 typedef struct local_info_t {
71 struct pcmcia_device *p_dev;
72 int busy;
73 int cardnr;
74 } local_info_t;
75
elsa_cs_probe(struct pcmcia_device * link)76 static 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
elsa_cs_detach(struct pcmcia_device * link)94 static 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
elsa_cs_configcheck(struct pcmcia_device * p_dev,void * priv_data)106 static 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
elsa_cs_config(struct pcmcia_device * link)130 static 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;
164 failed:
165 elsa_cs_release(link);
166 return -ENODEV;
167 } /* elsa_cs_config */
168
elsa_cs_release(struct pcmcia_device * link)169 static 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
elsa_suspend(struct pcmcia_device * link)185 static 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
elsa_resume(struct pcmcia_device * link)194 static 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
203 static 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 };
208 MODULE_DEVICE_TABLE(pcmcia, elsa_ids);
209
210 static 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
init_elsa_cs(void)220 static int __init init_elsa_cs(void)
221 {
222 return pcmcia_register_driver(&elsa_cs_driver);
223 }
224
exit_elsa_cs(void)225 static void __exit exit_elsa_cs(void)
226 {
227 pcmcia_unregister_driver(&elsa_cs_driver);
228 }
229
230 module_init(init_elsa_cs);
231 module_exit(exit_elsa_cs);
232