1 /*======================================================================
3 A driver for PCMCIA parallel port adapters
5 (specifically, for the Quatech SPP-100 EPP card: other cards will
6 probably require driver tweaks)
8 parport_cs.c 1.29 2002/10/11 06:57:41
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/
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.
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.
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.
35 ======================================================================*/
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>
48 #include <linux/parport.h>
49 #include <linux/parport_pc.h>
51 #include <pcmcia/cistpl.h>
52 #include <pcmcia/ds.h>
53 #include <pcmcia/cisreg.h>
54 #include <pcmcia/ciscode.h>
56 /*====================================================================*/
58 /* Module parameters */
60 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
61 MODULE_DESCRIPTION("PCMCIA parallel port card driver");
62 MODULE_LICENSE("Dual MPL/GPL");
64 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
66 INT_MODULE_PARM(epp_mode, 1);
69 /*====================================================================*/
71 #define FORCE_EPP_MODE 0x08
73 typedef struct parport_info_t {
74 struct pcmcia_device *p_dev;
79 static void parport_detach(struct pcmcia_device *p_dev);
80 static int parport_config(struct pcmcia_device *link);
81 static void parport_cs_release(struct pcmcia_device *);
83 /*======================================================================
85 parport_attach() creates an "instance" of the driver, allocating
86 local data structures for one device. The device is registered
89 ======================================================================*/
91 static int parport_probe(struct pcmcia_device *link)
95 dev_dbg(&link->dev, "parport_attach()\n");
97 /* Create new parport device */
98 info = kzalloc(sizeof(*info), GFP_KERNEL);
99 if (!info) return -ENOMEM;
103 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
105 return parport_config(link);
106 } /* parport_attach */
108 /*======================================================================
110 This deletes a driver "instance". The device is de-registered
111 with Card Services. If it has been released, all local data
112 structures are freed. Otherwise, the structures will be freed
113 when the device is released.
115 ======================================================================*/
117 static void parport_detach(struct pcmcia_device *link)
119 dev_dbg(&link->dev, "parport_detach\n");
121 parport_cs_release(link);
124 } /* parport_detach */
126 /*======================================================================
128 parport_config() is scheduled to run after a CARD_INSERTION event
129 is received, to configure the PCMCIA socket, and to make the
130 parport device available to the system.
132 ======================================================================*/
134 static int parport_config_check(struct pcmcia_device *p_dev, void *priv_data)
136 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
137 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
138 p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH;
139 p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
141 return pcmcia_request_io(p_dev);
144 static int parport_config(struct pcmcia_device *link)
146 parport_info_t *info = link->priv;
150 dev_dbg(&link->dev, "parport_config\n");
153 link->config_index |= FORCE_EPP_MODE;
155 ret = pcmcia_loop_config(link, parport_config_check, NULL);
161 ret = pcmcia_enable_device(link);
165 p = parport_pc_probe_port(link->resource[0]->start,
166 link->resource[1]->start,
167 link->irq, PARPORT_DMA_NONE,
168 &link->dev, IRQF_SHARED);
170 printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
171 "0x%3x, irq %u failed\n",
172 (unsigned int) link->resource[0]->start,
177 p->modes |= PARPORT_MODE_PCSPP;
179 p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
186 parport_cs_release(link);
188 } /* parport_config */
190 /*======================================================================
192 After a card is removed, parport_cs_release() will unregister the
193 device, and release the PCMCIA configuration. If the device is
194 still open, this will be postponed until it is closed.
196 ======================================================================*/
198 static void parport_cs_release(struct pcmcia_device *link)
200 parport_info_t *info = link->priv;
202 dev_dbg(&link->dev, "parport_release\n");
205 struct parport *p = info->port;
206 parport_pc_unregister_port(p);
210 pcmcia_disable_device(link);
211 } /* parport_cs_release */
214 static struct pcmcia_device_id parport_ids[] = {
215 PCMCIA_DEVICE_FUNC_ID(3),
216 PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc),
217 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
220 MODULE_DEVICE_TABLE(pcmcia, parport_ids);
222 static struct pcmcia_driver parport_cs_driver = {
223 .owner = THIS_MODULE,
224 .name = "parport_cs",
225 .probe = parport_probe,
226 .remove = parport_detach,
227 .id_table = parport_ids,
230 static int __init init_parport_cs(void)
232 return pcmcia_register_driver(&parport_cs_driver);
235 static void __exit exit_parport_cs(void)
237 pcmcia_unregister_driver(&parport_cs_driver);
240 module_init(init_parport_cs);
241 module_exit(exit_parport_cs);