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 /*
29 Driver: ni_labpc_cs
30 Description: National Instruments Lab-PC (& compatibles)
31 Author: Frank Mori Hess <fmhess@users.sourceforge.net>
32 Devices: [National Instruments] DAQCard-1200 (daqcard-1200)
33 Status: works
34
35 Thanks go to Fredrik Lingvall for much testing and perseverance in
36 helping to debug daqcard-1200 support.
37
38 The 1200 series boards have onboard calibration dacs for correcting
39 analog input/output offsets and gains. The proper settings for these
40 caldacs are stored on the board's eeprom. To read the caldac values
41 from the eeprom and store them into a file that can be then be used by
42 comedilib, use the comedi_calibrate program.
43
44 Configuration options:
45 none
46
47 The daqcard-1200 has quirky chanlist requirements
48 when scanning multiple channels. Multiple channel scan
49 sequence must start at highest channel, then decrement down to
50 channel 0. Chanlists consisting of all one channel
51 are also legal, and allow you to pace conversions in bursts.
52
53 */
54
55 /*
56
57 NI manuals:
58 340988a (daqcard-1200)
59
60 */
61
62 #undef LABPC_DEBUG /* debugging messages */
63
64 #include "../comedidev.h"
65
66 #include <linux/delay.h>
67 #include <linux/slab.h>
68
69 #include "8253.h"
70 #include "8255.h"
71 #include "comedi_fc.h"
72 #include "ni_labpc.h"
73
74 #include <pcmcia/cistpl.h>
75 #include <pcmcia/cisreg.h>
76 #include <pcmcia/ds.h>
77
78 static struct pcmcia_device *pcmcia_cur_dev;
79
80 static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it);
81
82 static const struct labpc_board_struct labpc_cs_boards[] = {
83 {
84 .name = "daqcard-1200",
85 .device_id = 0x103, /* 0x10b is manufacturer id,
86 0x103 is device id */
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 },
97 /* duplicate entry, to support using alternate name */
98 {
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 },
111 };
112
113 /*
114 * Useful for shorthand access to the particular board structure
115 */
116 #define thisboard ((const struct labpc_board_struct *)dev->board_ptr)
117
118 static struct comedi_driver driver_labpc_cs = {
119 .driver_name = "ni_labpc_cs",
120 .module = THIS_MODULE,
121 .attach = &labpc_attach,
122 .detach = &labpc_common_detach,
123 .num_names = ARRAY_SIZE(labpc_cs_boards),
124 .board_name = &labpc_cs_boards[0].name,
125 .offset = sizeof(struct labpc_board_struct),
126 };
127
labpc_attach(struct comedi_device * dev,struct comedi_devconfig * it)128 static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it)
129 {
130 unsigned long iobase = 0;
131 unsigned int irq = 0;
132 struct pcmcia_device *link;
133
134 /* allocate and initialize dev->private */
135 if (alloc_private(dev, sizeof(struct labpc_private)) < 0)
136 return -ENOMEM;
137
138 /* get base address, irq etc. based on bustype */
139 switch (thisboard->bustype) {
140 case pcmcia_bustype:
141 link = pcmcia_cur_dev; /* XXX hack */
142 if (!link)
143 return -EIO;
144 iobase = link->resource[0]->start;
145 irq = link->irq;
146 break;
147 default:
148 pr_err("bug! couldn't determine board type\n");
149 return -EINVAL;
150 break;
151 }
152 return labpc_common_attach(dev, iobase, irq, 0);
153 }
154
155 static void labpc_config(struct pcmcia_device *link);
156 static void labpc_release(struct pcmcia_device *link);
157 static int labpc_cs_suspend(struct pcmcia_device *p_dev);
158 static int labpc_cs_resume(struct pcmcia_device *p_dev);
159
160 static int labpc_cs_attach(struct pcmcia_device *);
161 static void labpc_cs_detach(struct pcmcia_device *);
162
163 struct local_info_t {
164 struct pcmcia_device *link;
165 int stop;
166 struct bus_operations *bus;
167 };
168
labpc_cs_attach(struct pcmcia_device * link)169 static int labpc_cs_attach(struct pcmcia_device *link)
170 {
171 struct local_info_t *local;
172
173 dev_dbg(&link->dev, "labpc_cs_attach()\n");
174
175 /* Allocate space for private device-specific data */
176 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
177 if (!local)
178 return -ENOMEM;
179 local->link = link;
180 link->priv = local;
181
182 pcmcia_cur_dev = link;
183
184 labpc_config(link);
185
186 return 0;
187 } /* labpc_cs_attach */
188
labpc_cs_detach(struct pcmcia_device * link)189 static void labpc_cs_detach(struct pcmcia_device *link)
190 {
191 dev_dbg(&link->dev, "labpc_cs_detach\n");
192
193 /*
194 If the device is currently configured and active, we won't
195 actually delete it yet. Instead, it is marked so that when
196 the release() function is called, that will trigger a proper
197 detach().
198 */
199 ((struct local_info_t *)link->priv)->stop = 1;
200 labpc_release(link);
201
202 /* This points to the parent local_info_t struct (may be null) */
203 kfree(link->priv);
204
205 } /* labpc_cs_detach */
206
labpc_pcmcia_config_loop(struct pcmcia_device * p_dev,void * priv_data)207 static int labpc_pcmcia_config_loop(struct pcmcia_device *p_dev,
208 void *priv_data)
209 {
210 if (p_dev->config_index == 0)
211 return -EINVAL;
212
213 return pcmcia_request_io(p_dev);
214 }
215
216
labpc_config(struct pcmcia_device * link)217 static void labpc_config(struct pcmcia_device *link)
218 {
219 int ret;
220
221 dev_dbg(&link->dev, "labpc_config\n");
222
223 link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ |
224 CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
225
226 ret = pcmcia_loop_config(link, labpc_pcmcia_config_loop, NULL);
227 if (ret) {
228 dev_warn(&link->dev, "no configuration found\n");
229 goto failed;
230 }
231
232 if (!link->irq)
233 goto failed;
234
235 ret = pcmcia_enable_device(link);
236 if (ret)
237 goto failed;
238
239 return;
240
241 failed:
242 labpc_release(link);
243
244 } /* labpc_config */
245
labpc_release(struct pcmcia_device * link)246 static void labpc_release(struct pcmcia_device *link)
247 {
248 dev_dbg(&link->dev, "labpc_release\n");
249
250 pcmcia_disable_device(link);
251 } /* labpc_release */
252
labpc_cs_suspend(struct pcmcia_device * link)253 static int labpc_cs_suspend(struct pcmcia_device *link)
254 {
255 struct local_info_t *local = link->priv;
256
257 /* Mark the device as stopped, to block IO until later */
258 local->stop = 1;
259 return 0;
260 } /* labpc_cs_suspend */
261
labpc_cs_resume(struct pcmcia_device * link)262 static int labpc_cs_resume(struct pcmcia_device *link)
263 {
264 struct local_info_t *local = link->priv;
265
266 local->stop = 0;
267 return 0;
268 } /* labpc_cs_resume */
269
270 static const struct pcmcia_device_id labpc_cs_ids[] = {
271 /* N.B. These IDs should match those in labpc_cs_boards (ni_labpc.c) */
272 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0103), /* daqcard-1200 */
273 PCMCIA_DEVICE_NULL
274 };
275
276 MODULE_DEVICE_TABLE(pcmcia, labpc_cs_ids);
277 MODULE_AUTHOR("Frank Mori Hess <fmhess@users.sourceforge.net>");
278 MODULE_DESCRIPTION("Comedi driver for National Instruments Lab-PC");
279 MODULE_LICENSE("GPL");
280
281 struct pcmcia_driver labpc_cs_driver = {
282 .probe = labpc_cs_attach,
283 .remove = labpc_cs_detach,
284 .suspend = labpc_cs_suspend,
285 .resume = labpc_cs_resume,
286 .id_table = labpc_cs_ids,
287 .owner = THIS_MODULE,
288 .name = "daqcard-1200",
289 };
290
init_labpc_cs(void)291 static int __init init_labpc_cs(void)
292 {
293 pcmcia_register_driver(&labpc_cs_driver);
294 return 0;
295 }
296
exit_labpc_cs(void)297 static void __exit exit_labpc_cs(void)
298 {
299 pcmcia_unregister_driver(&labpc_cs_driver);
300 }
301
labpc_init_module(void)302 int __init labpc_init_module(void)
303 {
304 int ret;
305
306 ret = init_labpc_cs();
307 if (ret < 0)
308 return ret;
309
310 return comedi_driver_register(&driver_labpc_cs);
311 }
312
labpc_exit_module(void)313 void __exit labpc_exit_module(void)
314 {
315 exit_labpc_cs();
316 comedi_driver_unregister(&driver_labpc_cs);
317 }
318
319 module_init(labpc_init_module);
320 module_exit(labpc_exit_module);
321