1/*
2 * PCMCIA client driver for AVM A1 / Fritz!PCMCIA
3 *
4 * Author       Carsten Paeth
5 * Copyright    1998-2001 by Carsten Paeth <calle@calle.in-berlin.de>
6 *
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
9 *
10 */
11
12#include <linux/module.h>
13
14
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/ptrace.h>
18#include <linux/slab.h>
19#include <linux/string.h>
20#include <asm/io.h>
21
22#include <pcmcia/cistpl.h>
23#include <pcmcia/ds.h>
24#include "hisax_cfg.h"
25
26MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards");
27MODULE_AUTHOR("Carsten Paeth");
28MODULE_LICENSE("GPL");
29
30
31/*====================================================================*/
32
33/* Parameters that can be set with 'insmod' */
34
35static int isdnprot = 2;
36
37module_param(isdnprot, int, 0);
38
39/*====================================================================*/
40
41static int avma1cs_config(struct pcmcia_device *link);
42static void avma1cs_release(struct pcmcia_device *link);
43static void avma1cs_detach(struct pcmcia_device *p_dev);
44
45static int avma1cs_probe(struct pcmcia_device *p_dev)
46{
47	dev_dbg(&p_dev->dev, "avma1cs_attach()\n");
48
49	/* General socket configuration */
50	p_dev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
51	p_dev->config_index = 1;
52	p_dev->config_regs = PRESENT_OPTION;
53
54	return avma1cs_config(p_dev);
55} /* avma1cs_attach */
56
57static void avma1cs_detach(struct pcmcia_device *link)
58{
59	dev_dbg(&link->dev, "avma1cs_detach(0x%p)\n", link);
60	avma1cs_release(link);
61	kfree(link->priv);
62} /* avma1cs_detach */
63
64static int avma1cs_configcheck(struct pcmcia_device *p_dev, void *priv_data)
65{
66	p_dev->resource[0]->end = 16;
67	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
68	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
69	p_dev->io_lines = 5;
70
71	return pcmcia_request_io(p_dev);
72}
73
74
75static int avma1cs_config(struct pcmcia_device *link)
76{
77	int i = -1;
78	char devname[128];
79	IsdnCard_t	icard;
80	int busy = 0;
81
82	dev_dbg(&link->dev, "avma1cs_config(0x%p)\n", link);
83
84	devname[0] = 0;
85	if (link->prod_id[1])
86		strlcpy(devname, link->prod_id[1], sizeof(devname));
87
88	if (pcmcia_loop_config(link, avma1cs_configcheck, NULL))
89		return -ENODEV;
90
91	do {
92		/*
93		 * allocate an interrupt line
94		 */
95		if (!link->irq) {
96			/* undo */
97			pcmcia_disable_device(link);
98			break;
99		}
100
101		/*
102		 * configure the PCMCIA socket
103		 */
104		i = pcmcia_enable_device(link);
105		if (i != 0) {
106			pcmcia_disable_device(link);
107			break;
108		}
109
110	} while (0);
111
112	/* If any step failed, release any partially configured state */
113	if (i != 0) {
114		avma1cs_release(link);
115		return -ENODEV;
116	}
117
118	icard.para[0] = link->irq;
119	icard.para[1] = link->resource[0]->start;
120	icard.protocol = isdnprot;
121	icard.typ = ISDN_CTYPE_A1_PCMCIA;
122
123	i = hisax_init_pcmcia(link, &busy, &icard);
124	if (i < 0) {
125		printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 "
126		       "PCMCIA %d at i/o %#x\n", i,
127		       (unsigned int) link->resource[0]->start);
128		avma1cs_release(link);
129		return -ENODEV;
130	}
131	link->priv = (void *) (unsigned long) i;
132
133	return 0;
134} /* avma1cs_config */
135
136static void avma1cs_release(struct pcmcia_device *link)
137{
138	unsigned long minor = (unsigned long) link->priv;
139
140	dev_dbg(&link->dev, "avma1cs_release(0x%p)\n", link);
141
142	/* now unregister function with hisax */
143	HiSax_closecard(minor);
144
145	pcmcia_disable_device(link);
146} /* avma1cs_release */
147
148static const struct pcmcia_device_id avma1cs_ids[] = {
149	PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
150	PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
151	PCMCIA_DEVICE_NULL
152};
153MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
154
155static struct pcmcia_driver avma1cs_driver = {
156	.owner		= THIS_MODULE,
157	.name		= "avma1_cs",
158	.probe		= avma1cs_probe,
159	.remove		= avma1cs_detach,
160	.id_table	= avma1cs_ids,
161};
162module_pcmcia_driver(avma1cs_driver);
163