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>
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.
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.
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.
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.
26 ************************************************************************
30 Description: National Instruments Lab-PC (& compatibles)
31 Author: Frank Mori Hess <fmhess@users.sourceforge.net>
32 Devices: [National Instruments] DAQCard-1200 (daqcard-1200)
35 Thanks go to Fredrik Lingvall for much testing and perseverance in
36 helping to debug daqcard-1200 support.
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.
44 Configuration options:
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.
58 340988a (daqcard-1200)
62 #undef LABPC_DEBUG /* debugging messages */
64 #include "../comedidev.h"
66 #include <linux/delay.h>
67 #include <linux/slab.h>
71 #include "comedi_fc.h"
74 #include <pcmcia/cistpl.h>
75 #include <pcmcia/cisreg.h>
76 #include <pcmcia/ds.h>
78 static struct pcmcia_device *pcmcia_cur_dev;
80 static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it);
82 static const struct labpc_board_struct labpc_cs_boards[] = {
84 .name = "daqcard-1200",
85 .device_id = 0x103, /* 0x10b is manufacturer id,
88 .bustype = pcmcia_bustype,
89 .register_layout = labpc_1200_layout,
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,
95 .memory_mapped_io = 0,
97 /* duplicate entry, to support using alternate name */
99 .name = "ni_labpc_cs",
102 .bustype = pcmcia_bustype,
103 .register_layout = labpc_1200_layout,
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,
109 .memory_mapped_io = 0,
114 * Useful for shorthand access to the particular board structure
116 #define thisboard ((const struct labpc_board_struct *)dev->board_ptr)
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),
128 static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it)
130 unsigned long iobase = 0;
131 unsigned int irq = 0;
132 struct pcmcia_device *link;
134 /* allocate and initialize dev->private */
135 if (alloc_private(dev, sizeof(struct labpc_private)) < 0)
138 /* get base address, irq etc. based on bustype */
139 switch (thisboard->bustype) {
141 link = pcmcia_cur_dev; /* XXX hack */
144 iobase = link->resource[0]->start;
148 printk("bug! couldn't determine board type\n");
152 return labpc_common_attach(dev, iobase, irq, 0);
155 /*====================================================================*/
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
165 Kernel version 2.6.16 upwards uses suspend() and resume() functions
166 instead of an event() function.
169 static void labpc_config(struct pcmcia_device *link);
170 static void labpc_release(struct pcmcia_device *link);
171 static int labpc_cs_suspend(struct pcmcia_device *p_dev);
172 static int labpc_cs_resume(struct pcmcia_device *p_dev);
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.
180 static int labpc_cs_attach(struct pcmcia_device *);
181 static void labpc_cs_detach(struct pcmcia_device *);
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.
190 struct local_info_t {
191 struct pcmcia_device *link;
193 struct bus_operations *bus;
196 /*======================================================================
198 labpc_cs_attach() creates an "instance" of the driver, allocating
199 local data structures for one device. The device is registered
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.
206 ======================================================================*/
208 static int labpc_cs_attach(struct pcmcia_device *link)
210 struct local_info_t *local;
212 dev_dbg(&link->dev, "labpc_cs_attach()\n");
214 /* Allocate space for private device-specific data */
215 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
221 pcmcia_cur_dev = link;
226 } /* labpc_cs_attach */
228 /*======================================================================
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.
235 ======================================================================*/
237 static void labpc_cs_detach(struct pcmcia_device *link)
239 dev_dbg(&link->dev, "labpc_cs_detach\n");
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
247 ((struct local_info_t *)link->priv)->stop = 1;
250 /* This points to the parent local_info_t struct (may be null) */
253 } /* labpc_cs_detach */
255 /*======================================================================
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.
261 ======================================================================*/
263 static int labpc_pcmcia_config_loop(struct pcmcia_device *p_dev,
264 cistpl_cftable_entry_t *cfg,
265 cistpl_cftable_entry_t *dflt,
272 /* Does this card need audio output? */
273 if (cfg->flags & CISTPL_CFTABLE_AUDIO)
274 p_dev->config_flags |= CONF_ENABLE_SPKR;
276 /* Do we need to allocate an interrupt? */
277 p_dev->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
279 /* IO window settings */
280 p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
281 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
282 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
283 p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
284 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
285 p_dev->resource[0]->flags |=
286 pcmcia_io_cfg_data_width(io->flags);
287 p_dev->resource[0]->start = io->win[0].base;
288 p_dev->resource[0]->end = io->win[0].len;
290 p_dev->resource[1]->flags = p_dev->resource[0]->flags;
291 p_dev->resource[1]->start = io->win[1].base;
292 p_dev->resource[1]->end = io->win[1].len;
294 /* This reserves IO space but doesn't actually enable it */
295 if (pcmcia_request_io(p_dev) != 0)
299 /* If we got this far, we're cool! */
304 static void labpc_config(struct pcmcia_device *link)
308 dev_dbg(&link->dev, "labpc_config\n");
310 ret = pcmcia_loop_config(link, labpc_pcmcia_config_loop, NULL);
312 dev_warn(&link->dev, "no configuration found\n");
320 This actually configures the PCMCIA socket -- setting up
321 the I/O windows and the interrupt mapping, and putting the
322 card and host interface into "Memory and IO" mode.
324 p_dev->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
325 ret = pcmcia_enable_device(link);
329 /* Finally, report what we've done */
330 dev_info(&link->dev, "index 0x%02x", link->config_index);
331 printk(", irq %d", link->irq);
332 if (link->resource[0])
333 printk(" & %pR", link->resource[0]);
334 if (link->resource[1])
335 printk(" & %pR", link->resource[1]);
345 static void labpc_release(struct pcmcia_device *link)
347 dev_dbg(&link->dev, "labpc_release\n");
349 pcmcia_disable_device(link);
350 } /* labpc_release */
352 /*======================================================================
354 The card status event handler. Mostly, this schedules other
355 stuff to run after an event is received.
357 When a CARD_REMOVAL event is received, we immediately set a
358 private flag to block future accesses to this device. All the
359 functions that actually access the device should check this flag
360 to make sure the card is still present.
362 ======================================================================*/
364 static int labpc_cs_suspend(struct pcmcia_device *link)
366 struct local_info_t *local = link->priv;
368 /* Mark the device as stopped, to block IO until later */
371 } /* labpc_cs_suspend */
373 static int labpc_cs_resume(struct pcmcia_device *link)
375 struct local_info_t *local = link->priv;
379 } /* labpc_cs_resume */
381 /*====================================================================*/
383 static struct pcmcia_device_id labpc_cs_ids[] = {
384 /* N.B. These IDs should match those in labpc_cs_boards (ni_labpc.c) */
385 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0103), /* daqcard-1200 */
389 MODULE_DEVICE_TABLE(pcmcia, labpc_cs_ids);
390 MODULE_AUTHOR("Frank Mori Hess <fmhess@users.sourceforge.net>");
391 MODULE_DESCRIPTION("Comedi driver for National Instruments Lab-PC");
392 MODULE_LICENSE("GPL");
394 struct pcmcia_driver labpc_cs_driver = {
395 .probe = labpc_cs_attach,
396 .remove = labpc_cs_detach,
397 .suspend = labpc_cs_suspend,
398 .resume = labpc_cs_resume,
399 .id_table = labpc_cs_ids,
400 .owner = THIS_MODULE,
402 .name = "daqcard-1200",
406 static int __init init_labpc_cs(void)
408 pcmcia_register_driver(&labpc_cs_driver);
412 static void __exit exit_labpc_cs(void)
414 pcmcia_unregister_driver(&labpc_cs_driver);
417 int __init labpc_init_module(void)
421 ret = init_labpc_cs();
425 return comedi_driver_register(&driver_labpc_cs);
428 void __exit labpc_exit_module(void)
431 comedi_driver_unregister(&driver_labpc_cs);
434 module_init(labpc_init_module);
435 module_exit(labpc_exit_module);