tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 local_info_t *dev;
133 int i;
134 IsdnCard_t icard;
135
136 dev_dbg(&link->dev, "elsa_config(0x%p)\n", link);
137 dev = link->priv;
138
139 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
140
141 i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL);
142 if (i != 0)
143 goto failed;
144
145 if (!link->irq)
146 goto failed;
147
148 i = pcmcia_enable_device(link);
149 if (i != 0)
150 goto failed;
151
152 icard.para[0] = link->irq;
153 icard.para[1] = link->resource[0]->start;
154 icard.protocol = protocol;
155 icard.typ = ISDN_CTYPE_ELSA_PCMCIA;
156
157 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
158 if (i < 0) {
159 printk(KERN_ERR "elsa_cs: failed to initialize Elsa "
160 "PCMCIA %d with %pR\n", i, link->resource[0]);
161 elsa_cs_release(link);
162 } else
163 ((local_info_t*)link->priv)->cardnr = i;
164
165 return 0;
166failed:
167 elsa_cs_release(link);
168 return -ENODEV;
169} /* elsa_cs_config */
170
171static void elsa_cs_release(struct pcmcia_device *link)
172{
173 local_info_t *local = link->priv;
174
175 dev_dbg(&link->dev, "elsa_cs_release(0x%p)\n", link);
176
177 if (local) {
178 if (local->cardnr >= 0) {
179 /* no unregister function with hisax */
180 HiSax_closecard(local->cardnr);
181 }
182 }
183
184 pcmcia_disable_device(link);
185} /* elsa_cs_release */
186
187static int elsa_suspend(struct pcmcia_device *link)
188{
189 local_info_t *dev = link->priv;
190
191 dev->busy = 1;
192
193 return 0;
194}
195
196static int elsa_resume(struct pcmcia_device *link)
197{
198 local_info_t *dev = link->priv;
199
200 dev->busy = 0;
201
202 return 0;
203}
204
205static struct pcmcia_device_id elsa_ids[] = {
206 PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257),
207 PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257),
208 PCMCIA_DEVICE_NULL
209};
210MODULE_DEVICE_TABLE(pcmcia, elsa_ids);
211
212static struct pcmcia_driver elsa_cs_driver = {
213 .owner = THIS_MODULE,
214 .name = "elsa_cs",
215 .probe = elsa_cs_probe,
216 .remove = __devexit_p(elsa_cs_detach),
217 .id_table = elsa_ids,
218 .suspend = elsa_suspend,
219 .resume = elsa_resume,
220};
221
222static int __init init_elsa_cs(void)
223{
224 return pcmcia_register_driver(&elsa_cs_driver);
225}
226
227static void __exit exit_elsa_cs(void)
228{
229 pcmcia_unregister_driver(&elsa_cs_driver);
230}
231
232module_init(init_elsa_cs);
233module_exit(exit_elsa_cs);