[PATCH] Represent laptop_mode as jiffies internally
[linux-2.6/verdex.git] / drivers / parport / parport_cs.c
blob158d92563259174a0e8190339a3626c0aaf9436b
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/sched.h>
41 #include <linux/ptrace.h>
42 #include <linux/slab.h>
43 #include <linux/string.h>
44 #include <linux/timer.h>
45 #include <linux/ioport.h>
46 #include <linux/major.h>
48 #include <linux/parport.h>
49 #include <linux/parport_pc.h>
51 #include <pcmcia/cs_types.h>
52 #include <pcmcia/cs.h>
53 #include <pcmcia/cistpl.h>
54 #include <pcmcia/ds.h>
55 #include <pcmcia/cisreg.h>
56 #include <pcmcia/ciscode.h>
58 /*====================================================================*/
60 /* Module parameters */
62 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
63 MODULE_DESCRIPTION("PCMCIA parallel port card driver");
64 MODULE_LICENSE("Dual MPL/GPL");
66 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
68 INT_MODULE_PARM(epp_mode, 1);
70 #ifdef PCMCIA_DEBUG
71 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
72 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
73 static char *version =
74 "parport_cs.c 1.29 2002/10/11 06:57:41 (David Hinds)";
75 #else
76 #define DEBUG(n, args...)
77 #endif
79 /*====================================================================*/
81 #define FORCE_EPP_MODE 0x08
83 typedef struct parport_info_t {
84 dev_link_t link;
85 int ndev;
86 dev_node_t node;
87 struct parport *port;
88 } parport_info_t;
90 static void parport_detach(struct pcmcia_device *p_dev);
91 static void parport_config(dev_link_t *link);
92 static void parport_cs_release(dev_link_t *);
94 /*======================================================================
96 parport_attach() creates an "instance" of the driver, allocating
97 local data structures for one device. The device is registered
98 with Card Services.
100 ======================================================================*/
102 static int parport_attach(struct pcmcia_device *p_dev)
104 parport_info_t *info;
105 dev_link_t *link;
107 DEBUG(0, "parport_attach()\n");
109 /* Create new parport device */
110 info = kmalloc(sizeof(*info), GFP_KERNEL);
111 if (!info) return -ENOMEM;
112 memset(info, 0, sizeof(*info));
113 link = &info->link; link->priv = info;
115 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
116 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
117 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
118 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
119 link->conf.Attributes = CONF_ENABLE_IRQ;
120 link->conf.Vcc = 50;
121 link->conf.IntType = INT_MEMORY_AND_IO;
123 link->handle = p_dev;
124 p_dev->instance = link;
126 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
127 parport_config(link);
129 return 0;
130 } /* parport_attach */
132 /*======================================================================
134 This deletes a driver "instance". The device is de-registered
135 with Card Services. If it has been released, all local data
136 structures are freed. Otherwise, the structures will be freed
137 when the device is released.
139 ======================================================================*/
141 static void parport_detach(struct pcmcia_device *p_dev)
143 dev_link_t *link = dev_to_instance(p_dev);
145 DEBUG(0, "parport_detach(0x%p)\n", link);
147 if (link->state & DEV_CONFIG)
148 parport_cs_release(link);
150 kfree(link->priv);
151 } /* parport_detach */
153 /*======================================================================
155 parport_config() is scheduled to run after a CARD_INSERTION event
156 is received, to configure the PCMCIA socket, and to make the
157 parport device available to the system.
159 ======================================================================*/
161 #define CS_CHECK(fn, ret) \
162 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
164 void parport_config(dev_link_t *link)
166 client_handle_t handle = link->handle;
167 parport_info_t *info = link->priv;
168 tuple_t tuple;
169 u_short buf[128];
170 cisparse_t parse;
171 config_info_t conf;
172 cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
173 cistpl_cftable_entry_t dflt = { 0 };
174 struct parport *p;
175 int last_ret, last_fn;
177 DEBUG(0, "parport_config(0x%p)\n", link);
179 tuple.TupleData = (cisdata_t *)buf;
180 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
181 tuple.Attributes = 0;
182 tuple.DesiredTuple = CISTPL_CONFIG;
183 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
184 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
185 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
186 link->conf.ConfigBase = parse.config.base;
187 link->conf.Present = parse.config.rmask[0];
189 /* Configure card */
190 link->state |= DEV_CONFIG;
192 /* Not sure if this is right... look up the current Vcc */
193 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
195 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
196 tuple.Attributes = 0;
197 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
198 while (1) {
199 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
200 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
201 goto next_entry;
203 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
204 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
205 link->conf.ConfigIndex = cfg->index;
206 if (epp_mode)
207 link->conf.ConfigIndex |= FORCE_EPP_MODE;
208 link->io.BasePort1 = io->win[0].base;
209 link->io.NumPorts1 = io->win[0].len;
210 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
211 if (io->nwin == 2) {
212 link->io.BasePort2 = io->win[1].base;
213 link->io.NumPorts2 = io->win[1].len;
215 if (pcmcia_request_io(link->handle, &link->io) != 0)
216 goto next_entry;
217 /* If we've got this far, we're done */
218 break;
221 next_entry:
222 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
223 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
226 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
227 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
229 release_region(link->io.BasePort1, link->io.NumPorts1);
230 if (link->io.NumPorts2)
231 release_region(link->io.BasePort2, link->io.NumPorts2);
232 p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
233 link->irq.AssignedIRQ, PARPORT_DMA_NONE,
234 NULL);
235 if (p == NULL) {
236 printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
237 "0x%3x, irq %u failed\n", link->io.BasePort1,
238 link->irq.AssignedIRQ);
239 goto failed;
242 p->modes |= PARPORT_MODE_PCSPP;
243 if (epp_mode)
244 p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
245 info->ndev = 1;
246 info->node.major = LP_MAJOR;
247 info->node.minor = p->number;
248 info->port = p;
249 strcpy(info->node.dev_name, p->name);
250 link->dev = &info->node;
252 link->state &= ~DEV_CONFIG_PENDING;
253 return;
255 cs_failed:
256 cs_error(link->handle, last_fn, last_ret);
257 failed:
258 parport_cs_release(link);
259 link->state &= ~DEV_CONFIG_PENDING;
261 } /* parport_config */
263 /*======================================================================
265 After a card is removed, parport_cs_release() will unregister the
266 device, and release the PCMCIA configuration. If the device is
267 still open, this will be postponed until it is closed.
269 ======================================================================*/
271 void parport_cs_release(dev_link_t *link)
273 parport_info_t *info = link->priv;
275 DEBUG(0, "parport_release(0x%p)\n", link);
277 if (info->ndev) {
278 struct parport *p = info->port;
279 parport_pc_unregister_port(p);
280 request_region(link->io.BasePort1, link->io.NumPorts1,
281 info->node.dev_name);
282 if (link->io.NumPorts2)
283 request_region(link->io.BasePort2, link->io.NumPorts2,
284 info->node.dev_name);
286 info->ndev = 0;
287 link->dev = NULL;
289 pcmcia_release_configuration(link->handle);
290 pcmcia_release_io(link->handle, &link->io);
291 pcmcia_release_irq(link->handle, &link->irq);
293 link->state &= ~DEV_CONFIG;
295 } /* parport_cs_release */
297 static int parport_suspend(struct pcmcia_device *dev)
299 dev_link_t *link = dev_to_instance(dev);
301 link->state |= DEV_SUSPEND;
302 if (link->state & DEV_CONFIG)
303 pcmcia_release_configuration(link->handle);
305 return 0;
308 static int parport_resume(struct pcmcia_device *dev)
310 dev_link_t *link = dev_to_instance(dev);
312 link->state &= ~DEV_SUSPEND;
313 if (DEV_OK(link))
314 pcmcia_request_configuration(link->handle, &link->conf);
316 return 0;
319 static struct pcmcia_device_id parport_ids[] = {
320 PCMCIA_DEVICE_FUNC_ID(3),
321 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
322 PCMCIA_DEVICE_NULL
324 MODULE_DEVICE_TABLE(pcmcia, parport_ids);
326 static struct pcmcia_driver parport_cs_driver = {
327 .owner = THIS_MODULE,
328 .drv = {
329 .name = "parport_cs",
331 .probe = parport_attach,
332 .remove = parport_detach,
333 .id_table = parport_ids,
334 .suspend = parport_suspend,
335 .resume = parport_resume,
338 static int __init init_parport_cs(void)
340 return pcmcia_register_driver(&parport_cs_driver);
343 static void __exit exit_parport_cs(void)
345 pcmcia_unregister_driver(&parport_cs_driver);
348 module_init(init_parport_cs);
349 module_exit(exit_parport_cs);