pcmcia: move driver name to struct pcmcia_driver
[deliverable/linux.git] / drivers / staging / comedi / drivers / ni_labpc_cs.c
CommitLineData
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1/*
2 comedi/drivers/ni_labpc_cs.c
3 Driver for National Instruments daqcard-1200 boards
4 Copyright (C) 2001, 2002, 2003 Frank Mori Hess <fmhess@users.sourceforge.net>
5
6 PCMCIA crap is adapted from dummy_cs.c 1.31 2001/08/24 12:13:13
7 from the pcmcia package.
8 The initial developer of the pcmcia dummy_cs.c code is David A. Hinds
9 <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
10 are Copyright (C) 1999 David A. Hinds.
11
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25
26************************************************************************
27*/
28/*
29Driver: ni_labpc_cs
30Description: National Instruments Lab-PC (& compatibles)
31Author: Frank Mori Hess <fmhess@users.sourceforge.net>
32Devices: [National Instruments] DAQCard-1200 (daqcard-1200)
33Status: works
34
35Thanks go to Fredrik Lingvall for much testing and perseverance in
36helping to debug daqcard-1200 support.
37
38The 1200 series boards have onboard calibration dacs for correcting
39analog input/output offsets and gains. The proper settings for these
40caldacs are stored on the board's eeprom. To read the caldac values
41from the eeprom and store them into a file that can be then be used by
42comedilib, use the comedi_calibrate program.
43
44Configuration options:
45 none
46
47The daqcard-1200 has quirky chanlist requirements
48when scanning multiple channels. Multiple channel scan
49sequence must start at highest channel, then decrement down to
50channel 0. Chanlists consisting of all one channel
51are also legal, and allow you to pace conversions in bursts.
52
53*/
54
55/*
56
57NI manuals:
58340988a (daqcard-1200)
59
60*/
61
b79eb4c1 62#undef LABPC_DEBUG /* debugging messages */
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63
64#include "../comedidev.h"
65
66#include <linux/delay.h>
5a0e3ad6 67#include <linux/slab.h>
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68
69#include "8253.h"
70#include "8255.h"
71#include "comedi_fc.h"
72#include "ni_labpc.h"
73
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74#include <pcmcia/cistpl.h>
75#include <pcmcia/cisreg.h>
76#include <pcmcia/ds.h>
77
96233181 78static struct pcmcia_device *pcmcia_cur_dev;
124b13b2 79
da91b269 80static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it);
124b13b2 81
9ad00740 82static const struct labpc_board_struct labpc_cs_boards[] = {
124b13b2 83 {
0a85b6f0 84 .name = "daqcard-1200",
63a4eca5
BM
85 .device_id = 0x103, /* 0x10b is manufacturer id,
86 0x103 is device id */
0a85b6f0
MT
87 .ai_speed = 10000,
88 .bustype = pcmcia_bustype,
89 .register_layout = labpc_1200_layout,
90 .has_ao = 1,
91 .ai_range_table = &range_labpc_1200_ai,
92 .ai_range_code = labpc_1200_ai_gain_bits,
93 .ai_range_is_unipolar = labpc_1200_is_unipolar,
94 .ai_scan_up = 0,
95 .memory_mapped_io = 0,
96 },
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97 /* duplicate entry, to support using alternate name */
98 {
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MT
99 .name = "ni_labpc_cs",
100 .device_id = 0x103,
101 .ai_speed = 10000,
102 .bustype = pcmcia_bustype,
103 .register_layout = labpc_1200_layout,
104 .has_ao = 1,
105 .ai_range_table = &range_labpc_1200_ai,
106 .ai_range_code = labpc_1200_ai_gain_bits,
107 .ai_range_is_unipolar = labpc_1200_is_unipolar,
108 .ai_scan_up = 0,
109 .memory_mapped_io = 0,
110 },
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111};
112
113/*
114 * Useful for shorthand access to the particular board structure
115 */
9ad00740 116#define thisboard ((const struct labpc_board_struct *)dev->board_ptr)
124b13b2 117
139dfbdf 118static struct comedi_driver driver_labpc_cs = {
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119 .driver_name = "ni_labpc_cs",
120 .module = THIS_MODULE,
121 .attach = &labpc_attach,
122 .detach = &labpc_common_detach,
8629efa4 123 .num_names = ARRAY_SIZE(labpc_cs_boards),
124b13b2 124 .board_name = &labpc_cs_boards[0].name,
9ad00740 125 .offset = sizeof(struct labpc_board_struct),
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126};
127
da91b269 128static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it)
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129{
130 unsigned long iobase = 0;
131 unsigned int irq = 0;
132 struct pcmcia_device *link;
133
134 /* allocate and initialize dev->private */
0a4eb4b6 135 if (alloc_private(dev, sizeof(struct labpc_private)) < 0)
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136 return -ENOMEM;
137
2696fb57 138 /* get base address, irq etc. based on bustype */
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139 switch (thisboard->bustype) {
140 case pcmcia_bustype:
141 link = pcmcia_cur_dev; /* XXX hack */
142 if (!link)
143 return -EIO;
9a017a91 144 iobase = link->resource[0]->start;
eb14120f 145 irq = link->irq;
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146 break;
147 default:
148 printk("bug! couldn't determine board type\n");
149 return -EINVAL;
150 break;
151 }
152 return labpc_common_attach(dev, iobase, irq, 0);
153}
154
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155/*====================================================================*/
156
157/*
158 The event() function is this driver's Card Services event handler.
159 It will be called by Card Services when an appropriate card status
160 event is received. The config() and release() entry points are
161 used to configure or release a socket, in response to card
162 insertion and ejection events. They are invoked from the dummy
163 event handler.
164
165 Kernel version 2.6.16 upwards uses suspend() and resume() functions
166 instead of an event() function.
167*/
168
169static void labpc_config(struct pcmcia_device *link);
170static void labpc_release(struct pcmcia_device *link);
171static int labpc_cs_suspend(struct pcmcia_device *p_dev);
172static int labpc_cs_resume(struct pcmcia_device *p_dev);
173
174/*
175 The attach() and detach() entry points are used to create and destroy
176 "instances" of the driver, where each instance represents everything
177 needed to manage one actual PCMCIA card.
178*/
179
180static int labpc_cs_attach(struct pcmcia_device *);
181static void labpc_cs_detach(struct pcmcia_device *);
182
183/*
184 You'll also need to prototype all the functions that will actually
185 be used to talk to your device. See 'memory_cs' for a good example
186 of a fully self-sufficient driver; the other drivers rely more or
187 less on other parts of the kernel.
188*/
189
e3f9f2c8 190struct local_info_t {
124b13b2 191 struct pcmcia_device *link;
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192 int stop;
193 struct bus_operations *bus;
e3f9f2c8 194};
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195
196/*======================================================================
197
198 labpc_cs_attach() creates an "instance" of the driver, allocating
199 local data structures for one device. The device is registered
200 with Card Services.
201
202 The dev_link structure is initialized, but we don't actually
203 configure the card at this point -- we wait until we receive a
204 card insertion event.
205
206======================================================================*/
207
208static int labpc_cs_attach(struct pcmcia_device *link)
209{
e3f9f2c8 210 struct local_info_t *local;
124b13b2 211
55a19b39 212 dev_dbg(&link->dev, "labpc_cs_attach()\n");
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213
214 /* Allocate space for private device-specific data */
e3f9f2c8 215 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
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216 if (!local)
217 return -ENOMEM;
218 local->link = link;
219 link->priv = local;
220
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221 pcmcia_cur_dev = link;
222
223 labpc_config(link);
224
225 return 0;
226} /* labpc_cs_attach */
227
228/*======================================================================
229
230 This deletes a driver "instance". The device is de-registered
231 with Card Services. If it has been released, all local data
232 structures are freed. Otherwise, the structures will be freed
233 when the device is released.
234
235======================================================================*/
236
237static void labpc_cs_detach(struct pcmcia_device *link)
238{
55a19b39 239 dev_dbg(&link->dev, "labpc_cs_detach\n");
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240
241 /*
242 If the device is currently configured and active, we won't
243 actually delete it yet. Instead, it is marked so that when
244 the release() function is called, that will trigger a proper
245 detach().
246 */
99bd8f22
JMC
247 ((struct local_info_t *)link->priv)->stop = 1;
248 labpc_release(link);
124b13b2 249
92c4bad7
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250 /* This points to the parent local_info_t struct (may be null) */
251 kfree(link->priv);
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252
253} /* labpc_cs_detach */
254
255/*======================================================================
256
257 labpc_config() is scheduled to run after a CARD_INSERTION event
258 is received, to configure the PCMCIA socket, and to make the
259 device available to the system.
260
261======================================================================*/
262
55a19b39 263static int labpc_pcmcia_config_loop(struct pcmcia_device *p_dev,
55a19b39 264 void *priv_data)
124b13b2 265{
00990e7c
DB
266 if (p_dev->config_index == 0)
267 return -EINVAL;
c3744138 268
00990e7c 269 return pcmcia_request_io(p_dev);
55a19b39 270}
124b13b2 271
124b13b2 272
55a19b39
DB
273static void labpc_config(struct pcmcia_device *link)
274{
55a19b39 275 int ret;
124b13b2 276
55a19b39 277 dev_dbg(&link->dev, "labpc_config\n");
124b13b2 278
440eed43 279 link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ |
00990e7c 280 CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
440eed43 281
0f52e86d 282 ret = pcmcia_loop_config(link, labpc_pcmcia_config_loop, NULL);
55a19b39
DB
283 if (ret) {
284 dev_warn(&link->dev, "no configuration found\n");
285 goto failed;
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286 }
287
eb14120f
DB
288 if (!link->irq)
289 goto failed;
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290
291 /*
292 This actually configures the PCMCIA socket -- setting up
293 the I/O windows and the interrupt mapping, and putting the
294 card and host interface into "Memory and IO" mode.
295 */
1ac71e5a 296 ret = pcmcia_enable_device(link);
55a19b39
DB
297 if (ret)
298 goto failed;
124b13b2 299
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300 return;
301
55a19b39 302failed:
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303 labpc_release(link);
304
305} /* labpc_config */
306
307static void labpc_release(struct pcmcia_device *link)
308{
55a19b39 309 dev_dbg(&link->dev, "labpc_release\n");
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310
311 pcmcia_disable_device(link);
312} /* labpc_release */
313
314/*======================================================================
315
316 The card status event handler. Mostly, this schedules other
317 stuff to run after an event is received.
318
319 When a CARD_REMOVAL event is received, we immediately set a
320 private flag to block future accesses to this device. All the
321 functions that actually access the device should check this flag
322 to make sure the card is still present.
323
324======================================================================*/
325
326static int labpc_cs_suspend(struct pcmcia_device *link)
327{
e3f9f2c8 328 struct local_info_t *local = link->priv;
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329
330 /* Mark the device as stopped, to block IO until later */
331 local->stop = 1;
332 return 0;
333} /* labpc_cs_suspend */
334
335static int labpc_cs_resume(struct pcmcia_device *link)
336{
e3f9f2c8 337 struct local_info_t *local = link->priv;
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338
339 local->stop = 0;
340 return 0;
341} /* labpc_cs_resume */
342
343/*====================================================================*/
344
345static struct pcmcia_device_id labpc_cs_ids[] = {
346 /* N.B. These IDs should match those in labpc_cs_boards (ni_labpc.c) */
347 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0103), /* daqcard-1200 */
348 PCMCIA_DEVICE_NULL
349};
350
351MODULE_DEVICE_TABLE(pcmcia, labpc_cs_ids);
6c7f8196
AK
352MODULE_AUTHOR("Frank Mori Hess <fmhess@users.sourceforge.net>");
353MODULE_DESCRIPTION("Comedi driver for National Instruments Lab-PC");
354MODULE_LICENSE("GPL");
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355
356struct pcmcia_driver labpc_cs_driver = {
357 .probe = labpc_cs_attach,
358 .remove = labpc_cs_detach,
359 .suspend = labpc_cs_suspend,
360 .resume = labpc_cs_resume,
361 .id_table = labpc_cs_ids,
362 .owner = THIS_MODULE,
2e9b981a 363 .name = "daqcard-1200",
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364};
365
366static int __init init_labpc_cs(void)
367{
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368 pcmcia_register_driver(&labpc_cs_driver);
369 return 0;
370}
371
372static void __exit exit_labpc_cs(void)
373{
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374 pcmcia_unregister_driver(&labpc_cs_driver);
375}
376
377int __init labpc_init_module(void)
378{
379 int ret;
380
381 ret = init_labpc_cs();
382 if (ret < 0)
383 return ret;
384
385 return comedi_driver_register(&driver_labpc_cs);
386}
387
388void __exit labpc_exit_module(void)
389{
390 exit_labpc_cs();
391 comedi_driver_unregister(&driver_labpc_cs);
392}
393
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394module_init(labpc_init_module);
395module_exit(labpc_exit_module);
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