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
29#include <pcmcia/cistpl.h>
30#include <pcmcia/cisreg.h>
31#include <pcmcia/ds.h>
32#include "hisax_cfg.h"
33
34MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
35MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
36MODULE_LICENSE("GPL");
37
38
39/*====================================================================*/
40
41/* Parameters that can be set with 'insmod' */
42
43static int protocol = 2;        /* EURO-ISDN Default */
44module_param(protocol, int, 0);
45
46static int teles_cs_config(struct pcmcia_device *link);
47static void teles_cs_release(struct pcmcia_device *link);
48static void teles_detach(struct pcmcia_device *p_dev);
49
50typedef struct local_info_t {
51	struct pcmcia_device	*p_dev;
52	int                 busy;
53	int			cardnr;
54} local_info_t;
55
56static int teles_probe(struct pcmcia_device *link)
57{
58	local_info_t *local;
59
60	dev_dbg(&link->dev, "teles_attach()\n");
61
62	/* Allocate space for private device-specific data */
63	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
64	if (!local) return -ENOMEM;
65	local->cardnr = -1;
66
67	local->p_dev = link;
68	link->priv = local;
69
70	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
71
72	return teles_cs_config(link);
73} /* teles_attach */
74
75static void teles_detach(struct pcmcia_device *link)
76{
77	local_info_t *info = link->priv;
78
79	dev_dbg(&link->dev, "teles_detach(0x%p)\n", link);
80
81	info->busy = 1;
82	teles_cs_release(link);
83
84	kfree(info);
85} /* teles_detach */
86
87static int teles_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data)
88{
89	int j;
90
91	p_dev->io_lines = 5;
92	p_dev->resource[0]->end = 96;
93	p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH;
94	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
95
96	if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) {
97		printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
98		if (!pcmcia_request_io(p_dev))
99			return 0;
100	} else {
101		printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
102		for (j = 0x2f0; j > 0x100; j -= 0x10) {
103			p_dev->resource[0]->start = j;
104			if (!pcmcia_request_io(p_dev))
105				return 0;
106		}
107	}
108	return -ENODEV;
109}
110
111static int teles_cs_config(struct pcmcia_device *link)
112{
113	int i;
114	IsdnCard_t icard;
115
116	dev_dbg(&link->dev, "teles_config(0x%p)\n", link);
117
118	i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
119	if (i != 0)
120		goto cs_failed;
121
122	if (!link->irq)
123		goto cs_failed;
124
125	i = pcmcia_enable_device(link);
126	if (i != 0)
127		goto cs_failed;
128
129	icard.para[0] = link->irq;
130	icard.para[1] = link->resource[0]->start;
131	icard.protocol = protocol;
132	icard.typ = ISDN_CTYPE_TELESPCMCIA;
133
134	i = hisax_init_pcmcia(link, &(((local_info_t *)link->priv)->busy), &icard);
135	if (i < 0) {
136		printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
137		       i, (unsigned int) link->resource[0]->start);
138		teles_cs_release(link);
139		return -ENODEV;
140	}
141
142	((local_info_t *)link->priv)->cardnr = i;
143	return 0;
144
145cs_failed:
146	teles_cs_release(link);
147	return -ENODEV;
148} /* teles_cs_config */
149
150static void teles_cs_release(struct pcmcia_device *link)
151{
152	local_info_t *local = link->priv;
153
154	dev_dbg(&link->dev, "teles_cs_release(0x%p)\n", link);
155
156	if (local) {
157		if (local->cardnr >= 0) {
158			/* no unregister function with hisax */
159			HiSax_closecard(local->cardnr);
160		}
161	}
162
163	pcmcia_disable_device(link);
164} /* teles_cs_release */
165
166static int teles_suspend(struct pcmcia_device *link)
167{
168	local_info_t *dev = link->priv;
169
170	dev->busy = 1;
171
172	return 0;
173}
174
175static int teles_resume(struct pcmcia_device *link)
176{
177	local_info_t *dev = link->priv;
178
179	dev->busy = 0;
180
181	return 0;
182}
183
184
185static const struct pcmcia_device_id teles_ids[] = {
186	PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
187	PCMCIA_DEVICE_NULL,
188};
189MODULE_DEVICE_TABLE(pcmcia, teles_ids);
190
191static struct pcmcia_driver teles_cs_driver = {
192	.owner		= THIS_MODULE,
193	.name		= "teles_cs",
194	.probe		= teles_probe,
195	.remove		= teles_detach,
196	.id_table       = teles_ids,
197	.suspend	= teles_suspend,
198	.resume		= teles_resume,
199};
200module_pcmcia_driver(teles_cs_driver);
201