1/*======================================================================
2
3    A driver for PCMCIA parallel port adapters
4
5    (specifically, for the Quatech SPP-100 EPP card: other cards will
6    probably require driver tweaks)
7
8    parport_cs.c 1.29 2002/10/11 06:57:41
9
10    The contents of this file are subject to the Mozilla Public
11    License Version 1.1 (the "License"); you may not use this file
12    except in compliance with the License. You may obtain a copy of
13    the License at http://www.mozilla.org/MPL/
14
15    Software distributed under the License is distributed on an "AS
16    IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
17    implied. See the License for the specific language governing
18    rights and limitations under the License.
19
20    The initial developer of the original code is David A. Hinds
21    <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
22    are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
23
24    Alternatively, the contents of this file may be used under the
25    terms of the GNU General Public License version 2 (the "GPL"), in
26    which case the provisions of the GPL are applicable instead of the
27    above.  If you wish to allow the use of your version of this file
28    only under the terms of the GPL and not to allow others to use
29    your version of this file under the MPL, indicate your decision
30    by deleting the provisions above and replace them with the notice
31    and other provisions required by the GPL.  If you do not delete
32    the provisions above, a recipient may use your version of this
33    file under either the MPL or the GPL.
34
35======================================================================*/
36
37#include <linux/kernel.h>
38#include <linux/module.h>
39#include <linux/init.h>
40#include <linux/ptrace.h>
41#include <linux/slab.h>
42#include <linux/string.h>
43#include <linux/timer.h>
44#include <linux/ioport.h>
45#include <linux/major.h>
46#include <linux/interrupt.h>
47
48#include <linux/parport.h>
49#include <linux/parport_pc.h>
50
51#include <pcmcia/cistpl.h>
52#include <pcmcia/ds.h>
53#include <pcmcia/cisreg.h>
54#include <pcmcia/ciscode.h>
55
56/*====================================================================*/
57
58/* Module parameters */
59
60MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
61MODULE_DESCRIPTION("PCMCIA parallel port card driver");
62MODULE_LICENSE("Dual MPL/GPL");
63
64#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
65
66INT_MODULE_PARM(epp_mode, 1);
67
68
69/*====================================================================*/
70
71#define FORCE_EPP_MODE	0x08
72
73typedef struct parport_info_t {
74	struct pcmcia_device	*p_dev;
75    int			ndev;
76    struct parport	*port;
77} parport_info_t;
78
79static void parport_detach(struct pcmcia_device *p_dev);
80static int parport_config(struct pcmcia_device *link);
81static void parport_cs_release(struct pcmcia_device *);
82
83static int parport_probe(struct pcmcia_device *link)
84{
85    parport_info_t *info;
86
87    dev_dbg(&link->dev, "parport_attach()\n");
88
89    /* Create new parport device */
90    info = kzalloc(sizeof(*info), GFP_KERNEL);
91    if (!info) return -ENOMEM;
92    link->priv = info;
93    info->p_dev = link;
94
95    link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
96
97    return parport_config(link);
98} /* parport_attach */
99
100static void parport_detach(struct pcmcia_device *link)
101{
102    dev_dbg(&link->dev, "parport_detach\n");
103
104    parport_cs_release(link);
105
106    kfree(link->priv);
107} /* parport_detach */
108
109static int parport_config_check(struct pcmcia_device *p_dev, void *priv_data)
110{
111	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
112	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
113	p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH;
114	p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
115
116	return pcmcia_request_io(p_dev);
117}
118
119static int parport_config(struct pcmcia_device *link)
120{
121    parport_info_t *info = link->priv;
122    struct parport *p;
123    int ret;
124
125    dev_dbg(&link->dev, "parport_config\n");
126
127    if (epp_mode)
128	    link->config_index |= FORCE_EPP_MODE;
129
130    ret = pcmcia_loop_config(link, parport_config_check, NULL);
131    if (ret)
132	    goto failed;
133
134    if (!link->irq)
135	    goto failed;
136    ret = pcmcia_enable_device(link);
137    if (ret)
138	    goto failed;
139
140    p = parport_pc_probe_port(link->resource[0]->start,
141			      link->resource[1]->start,
142			      link->irq, PARPORT_DMA_NONE,
143			      &link->dev, IRQF_SHARED);
144    if (p == NULL) {
145	printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
146	       "0x%3x, irq %u failed\n",
147	       (unsigned int) link->resource[0]->start,
148	       link->irq);
149	goto failed;
150    }
151
152    p->modes |= PARPORT_MODE_PCSPP;
153    if (epp_mode)
154	p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
155    info->ndev = 1;
156    info->port = p;
157
158    return 0;
159
160failed:
161    parport_cs_release(link);
162    return -ENODEV;
163} /* parport_config */
164
165static void parport_cs_release(struct pcmcia_device *link)
166{
167	parport_info_t *info = link->priv;
168
169	dev_dbg(&link->dev, "parport_release\n");
170
171	if (info->ndev) {
172		struct parport *p = info->port;
173		parport_pc_unregister_port(p);
174	}
175	info->ndev = 0;
176
177	pcmcia_disable_device(link);
178} /* parport_cs_release */
179
180
181static const struct pcmcia_device_id parport_ids[] = {
182	PCMCIA_DEVICE_FUNC_ID(3),
183	PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc),
184	PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
185	PCMCIA_DEVICE_NULL
186};
187MODULE_DEVICE_TABLE(pcmcia, parport_ids);
188
189static struct pcmcia_driver parport_cs_driver = {
190	.owner		= THIS_MODULE,
191	.name		= "parport_cs",
192	.probe		= parport_probe,
193	.remove		= parport_detach,
194	.id_table	= parport_ids,
195};
196
197static int __init init_parport_cs(void)
198{
199	return pcmcia_register_driver(&parport_cs_driver);
200}
201
202static void __exit exit_parport_cs(void)
203{
204	pcmcia_unregister_driver(&parport_cs_driver);
205}
206
207module_init(init_parport_cs);
208module_exit(exit_parport_cs);
209