ni_labpc_cs.c revision 2202a5a7490a9de282846ea8d4a56d0249e09033 
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
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
78static struct pcmcia_device *pcmcia_cur_dev;
79
80static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it);
81
82static 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
118static 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
128static 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		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
155static void labpc_config(struct pcmcia_device *link);
156static void labpc_release(struct pcmcia_device *link);
157static int labpc_cs_suspend(struct pcmcia_device *p_dev);
158static int labpc_cs_resume(struct pcmcia_device *p_dev);
159
160static int labpc_cs_attach(struct pcmcia_device *);
161static void labpc_cs_detach(struct pcmcia_device *);
162
163struct local_info_t {
164	struct pcmcia_device *link;
165	int stop;
166	struct bus_operations *bus;
167};
168
169static 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
189static 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
207static 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
217static 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
241failed:
242	labpc_release(link);
243
244}				/* labpc_config */
245
246static 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
253static 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
262static 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
270static 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
276MODULE_DEVICE_TABLE(pcmcia, labpc_cs_ids);
277MODULE_AUTHOR("Frank Mori Hess <fmhess@users.sourceforge.net>");
278MODULE_DESCRIPTION("Comedi driver for National Instruments Lab-PC");
279MODULE_LICENSE("GPL");
280
281struct 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
291static int __init init_labpc_cs(void)
292{
293	pcmcia_register_driver(&labpc_cs_driver);
294	return 0;
295}
296
297static void __exit exit_labpc_cs(void)
298{
299	pcmcia_unregister_driver(&labpc_cs_driver);
300}
301
302int __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
313void __exit labpc_exit_module(void)
314{
315	exit_labpc_cs();
316	comedi_driver_unregister(&driver_labpc_cs);
317}
318
319module_init(labpc_init_module);
320module_exit(labpc_exit_module);
321