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 Extensions 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>
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
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
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 static int teles_cs_config(struct pcmcia_device *link) __devinit ;
48 static void teles_cs_release(struct pcmcia_device *link);
49 static void teles_detach(struct pcmcia_device *p_dev) __devexit ;
50
51 typedef struct local_info_t {
52 struct pcmcia_device *p_dev;
53 int busy;
54 int cardnr;
55 } local_info_t;
56
teles_probe(struct pcmcia_device * link)57 static int __devinit teles_probe(struct pcmcia_device *link)
58 {
59 local_info_t *local;
60
61 dev_dbg(&link->dev, "teles_attach()\n");
62
63 /* Allocate space for private device-specific data */
64 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
65 if (!local) return -ENOMEM;
66 local->cardnr = -1;
67
68 local->p_dev = link;
69 link->priv = local;
70
71 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
72
73 return teles_cs_config(link);
74 } /* teles_attach */
75
teles_detach(struct pcmcia_device * link)76 static void __devexit teles_detach(struct pcmcia_device *link)
77 {
78 local_info_t *info = link->priv;
79
80 dev_dbg(&link->dev, "teles_detach(0x%p)\n", link);
81
82 info->busy = 1;
83 teles_cs_release(link);
84
85 kfree(info);
86 } /* teles_detach */
87
teles_cs_configcheck(struct pcmcia_device * p_dev,void * priv_data)88 static int teles_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data)
89 {
90 int j;
91
92 p_dev->io_lines = 5;
93 p_dev->resource[0]->end = 96;
94 p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH;
95 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
96
97 if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) {
98 printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
99 if (!pcmcia_request_io(p_dev))
100 return 0;
101 } else {
102 printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
103 for (j = 0x2f0; j > 0x100; j -= 0x10) {
104 p_dev->resource[0]->start = j;
105 if (!pcmcia_request_io(p_dev))
106 return 0;
107 }
108 }
109 return -ENODEV;
110 }
111
teles_cs_config(struct pcmcia_device * link)112 static int __devinit teles_cs_config(struct pcmcia_device *link)
113 {
114 local_info_t *dev;
115 int i;
116 IsdnCard_t icard;
117
118 dev_dbg(&link->dev, "teles_config(0x%p)\n", link);
119 dev = link->priv;
120
121 i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
122 if (i != 0)
123 goto cs_failed;
124
125 if (!link->irq)
126 goto cs_failed;
127
128 i = pcmcia_enable_device(link);
129 if (i != 0)
130 goto cs_failed;
131
132 icard.para[0] = link->irq;
133 icard.para[1] = link->resource[0]->start;
134 icard.protocol = protocol;
135 icard.typ = ISDN_CTYPE_TELESPCMCIA;
136
137 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
138 if (i < 0) {
139 printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
140 i, (unsigned int) link->resource[0]->start);
141 teles_cs_release(link);
142 return -ENODEV;
143 }
144
145 ((local_info_t*)link->priv)->cardnr = i;
146 return 0;
147
148 cs_failed:
149 teles_cs_release(link);
150 return -ENODEV;
151 } /* teles_cs_config */
152
teles_cs_release(struct pcmcia_device * link)153 static void teles_cs_release(struct pcmcia_device *link)
154 {
155 local_info_t *local = link->priv;
156
157 dev_dbg(&link->dev, "teles_cs_release(0x%p)\n", link);
158
159 if (local) {
160 if (local->cardnr >= 0) {
161 /* no unregister function with hisax */
162 HiSax_closecard(local->cardnr);
163 }
164 }
165
166 pcmcia_disable_device(link);
167 } /* teles_cs_release */
168
teles_suspend(struct pcmcia_device * link)169 static int teles_suspend(struct pcmcia_device *link)
170 {
171 local_info_t *dev = link->priv;
172
173 dev->busy = 1;
174
175 return 0;
176 }
177
teles_resume(struct pcmcia_device * link)178 static int teles_resume(struct pcmcia_device *link)
179 {
180 local_info_t *dev = link->priv;
181
182 dev->busy = 0;
183
184 return 0;
185 }
186
187
188 static struct pcmcia_device_id teles_ids[] = {
189 PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
190 PCMCIA_DEVICE_NULL,
191 };
192 MODULE_DEVICE_TABLE(pcmcia, teles_ids);
193
194 static struct pcmcia_driver teles_cs_driver = {
195 .owner = THIS_MODULE,
196 .name = "teles_cs",
197 .probe = teles_probe,
198 .remove = __devexit_p(teles_detach),
199 .id_table = teles_ids,
200 .suspend = teles_suspend,
201 .resume = teles_resume,
202 };
203
init_teles_cs(void)204 static int __init init_teles_cs(void)
205 {
206 return pcmcia_register_driver(&teles_cs_driver);
207 }
208
exit_teles_cs(void)209 static void __exit exit_teles_cs(void)
210 {
211 pcmcia_unregister_driver(&teles_cs_driver);
212 }
213
214 module_init(init_teles_cs);
215 module_exit(exit_teles_cs);
216