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->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
104 link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
105 link->config_flags |= CONF_ENABLE_IRQ;
107 return parport_config(link);
108 } /* parport_attach */
110 /*======================================================================
112 This deletes a driver "instance". The device is de-registered
113 with Card Services. If it has been released, all local data
114 structures are freed. Otherwise, the structures will be freed
115 when the device is released.
117 ======================================================================*/
119 static void parport_detach(struct pcmcia_device *link)
121 dev_dbg(&link->dev, "parport_detach\n");
123 parport_cs_release(link);
126 } /* parport_detach */
128 /*======================================================================
130 parport_config() is scheduled to run after a CARD_INSERTION event
131 is received, to configure the PCMCIA socket, and to make the
132 parport device available to the system.
134 ======================================================================*/
136 static int parport_config_check(struct pcmcia_device *p_dev,
137 cistpl_cftable_entry_t *cfg,
138 cistpl_cftable_entry_t *dflt,
142 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
143 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
144 p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
146 p_dev->config_index |= FORCE_EPP_MODE;
147 p_dev->resource[0]->start = io->win[0].base;
148 p_dev->resource[0]->end = io->win[0].len;
150 p_dev->resource[1]->start = io->win[1].base;
151 p_dev->resource[1]->end = io->win[1].len;
153 if (pcmcia_request_io(p_dev) != 0)
160 static int parport_config(struct pcmcia_device *link)
162 parport_info_t *info = link->priv;
166 dev_dbg(&link->dev, "parport_config\n");
168 ret = pcmcia_loop_config(link, parport_config_check, NULL);
174 ret = pcmcia_enable_device(link);
178 p = parport_pc_probe_port(link->resource[0]->start,
179 link->resource[1]->start,
180 link->irq, PARPORT_DMA_NONE,
181 &link->dev, IRQF_SHARED);
183 printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
184 "0x%3x, irq %u failed\n",
185 (unsigned int) link->resource[0]->start,
190 p->modes |= PARPORT_MODE_PCSPP;
192 p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
199 parport_cs_release(link);
201 } /* parport_config */
203 /*======================================================================
205 After a card is removed, parport_cs_release() will unregister the
206 device, and release the PCMCIA configuration. If the device is
207 still open, this will be postponed until it is closed.
209 ======================================================================*/
211 static void parport_cs_release(struct pcmcia_device *link)
213 parport_info_t *info = link->priv;
215 dev_dbg(&link->dev, "parport_release\n");
218 struct parport *p = info->port;
219 parport_pc_unregister_port(p);
223 pcmcia_disable_device(link);
224 } /* parport_cs_release */
227 static struct pcmcia_device_id parport_ids[] = {
228 PCMCIA_DEVICE_FUNC_ID(3),
229 PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc),
230 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
233 MODULE_DEVICE_TABLE(pcmcia, parport_ids);
235 static struct pcmcia_driver parport_cs_driver = {
236 .owner = THIS_MODULE,
238 .name = "parport_cs",
240 .probe = parport_probe,
241 .remove = parport_detach,
242 .id_table = parport_ids,
245 static int __init init_parport_cs(void)
247 return pcmcia_register_driver(&parport_cs_driver);
250 static void __exit exit_parport_cs(void)
252 pcmcia_unregister_driver(&parport_cs_driver);
255 module_init(init_parport_cs);
256 module_exit(exit_parport_cs);