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/cs.h>
75 #include <pcmcia/cistpl.h>
76 #include <pcmcia/cisreg.h>
77 #include <pcmcia/ds.h>
79 static struct pcmcia_device *pcmcia_cur_dev;
81 static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it);
83 static const struct labpc_board_struct labpc_cs_boards[] = {
85 .name = "daqcard-1200",
86 .device_id = 0x103, /* 0x10b is manufacturer id,
89 .bustype = pcmcia_bustype,
90 .register_layout = labpc_1200_layout,
92 .ai_range_table = &range_labpc_1200_ai,
93 .ai_range_code = labpc_1200_ai_gain_bits,
94 .ai_range_is_unipolar = labpc_1200_is_unipolar,
96 .memory_mapped_io = 0,
98 /* duplicate entry, to support using alternate name */
100 .name = "ni_labpc_cs",
103 .bustype = pcmcia_bustype,
104 .register_layout = labpc_1200_layout,
106 .ai_range_table = &range_labpc_1200_ai,
107 .ai_range_code = labpc_1200_ai_gain_bits,
108 .ai_range_is_unipolar = labpc_1200_is_unipolar,
110 .memory_mapped_io = 0,
115 * Useful for shorthand access to the particular board structure
117 #define thisboard ((const struct labpc_board_struct *)dev->board_ptr)
119 static struct comedi_driver driver_labpc_cs = {
120 .driver_name = "ni_labpc_cs",
121 .module = THIS_MODULE,
122 .attach = &labpc_attach,
123 .detach = &labpc_common_detach,
124 .num_names = ARRAY_SIZE(labpc_cs_boards),
125 .board_name = &labpc_cs_boards[0].name,
126 .offset = sizeof(struct labpc_board_struct),
129 static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it)
131 unsigned long iobase = 0;
132 unsigned int irq = 0;
133 struct pcmcia_device *link;
135 /* allocate and initialize dev->private */
136 if (alloc_private(dev, sizeof(struct labpc_private)) < 0)
139 /* get base address, irq etc. based on bustype */
140 switch (thisboard->bustype) {
142 link = pcmcia_cur_dev; /* XXX hack */
145 iobase = link->resource[0]->start;
149 printk("bug! couldn't determine board type\n");
153 return labpc_common_attach(dev, iobase, irq, 0);
156 /*====================================================================*/
159 The event() function is this driver's Card Services event handler.
160 It will be called by Card Services when an appropriate card status
161 event is received. The config() and release() entry points are
162 used to configure or release a socket, in response to card
163 insertion and ejection events. They are invoked from the dummy
166 Kernel version 2.6.16 upwards uses suspend() and resume() functions
167 instead of an event() function.
170 static void labpc_config(struct pcmcia_device *link);
171 static void labpc_release(struct pcmcia_device *link);
172 static int labpc_cs_suspend(struct pcmcia_device *p_dev);
173 static int labpc_cs_resume(struct pcmcia_device *p_dev);
176 The attach() and detach() entry points are used to create and destroy
177 "instances" of the driver, where each instance represents everything
178 needed to manage one actual PCMCIA card.
181 static int labpc_cs_attach(struct pcmcia_device *);
182 static void labpc_cs_detach(struct pcmcia_device *);
185 You'll also need to prototype all the functions that will actually
186 be used to talk to your device. See 'memory_cs' for a good example
187 of a fully self-sufficient driver; the other drivers rely more or
188 less on other parts of the kernel.
192 The dev_info variable is the "key" that is used to match up this
193 device driver with appropriate cards, through the card configuration
197 static const dev_info_t dev_info = "daqcard-1200";
199 struct local_info_t {
200 struct pcmcia_device *link;
202 struct bus_operations *bus;
205 /*======================================================================
207 labpc_cs_attach() creates an "instance" of the driver, allocating
208 local data structures for one device. The device is registered
211 The dev_link structure is initialized, but we don't actually
212 configure the card at this point -- we wait until we receive a
213 card insertion event.
215 ======================================================================*/
217 static int labpc_cs_attach(struct pcmcia_device *link)
219 struct local_info_t *local;
221 dev_dbg(&link->dev, "labpc_cs_attach()\n");
223 /* Allocate space for private device-specific data */
224 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
231 General socket configuration defaults can go here. In this
232 client, we assume very little, and rely on the CIS for almost
233 everything. In most clients, many details (i.e., number, sizes,
234 and attributes of IO windows) are fixed by the nature of the
235 device, and can be hard-wired here.
237 link->conf.Attributes = 0;
238 link->conf.IntType = INT_MEMORY_AND_IO;
240 pcmcia_cur_dev = link;
245 } /* labpc_cs_attach */
247 /*======================================================================
249 This deletes a driver "instance". The device is de-registered
250 with Card Services. If it has been released, all local data
251 structures are freed. Otherwise, the structures will be freed
252 when the device is released.
254 ======================================================================*/
256 static void labpc_cs_detach(struct pcmcia_device *link)
258 dev_dbg(&link->dev, "labpc_cs_detach\n");
261 If the device is currently configured and active, we won't
262 actually delete it yet. Instead, it is marked so that when
263 the release() function is called, that will trigger a proper
266 ((struct local_info_t *)link->priv)->stop = 1;
269 /* This points to the parent local_info_t struct (may be null) */
272 } /* labpc_cs_detach */
274 /*======================================================================
276 labpc_config() is scheduled to run after a CARD_INSERTION event
277 is received, to configure the PCMCIA socket, and to make the
278 device available to the system.
280 ======================================================================*/
282 static int labpc_pcmcia_config_loop(struct pcmcia_device *p_dev,
283 cistpl_cftable_entry_t *cfg,
284 cistpl_cftable_entry_t *dflt,
291 /* Does this card need audio output? */
292 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
293 p_dev->conf.Attributes |= CONF_ENABLE_SPKR;
294 p_dev->conf.Status = CCSR_AUDIO_ENA;
297 /* Do we need to allocate an interrupt? */
298 p_dev->conf.Attributes |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
300 /* IO window settings */
301 p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
302 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
303 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
304 p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
305 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
306 p_dev->resource[0]->flags |=
307 pcmcia_io_cfg_data_width(io->flags);
308 p_dev->resource[0]->start = io->win[0].base;
309 p_dev->resource[0]->end = io->win[0].len;
311 p_dev->resource[1]->flags = p_dev->resource[0]->flags;
312 p_dev->resource[1]->start = io->win[1].base;
313 p_dev->resource[1]->end = io->win[1].len;
315 /* This reserves IO space but doesn't actually enable it */
316 if (pcmcia_request_io(p_dev) != 0)
320 /* If we got this far, we're cool! */
325 static void labpc_config(struct pcmcia_device *link)
329 dev_dbg(&link->dev, "labpc_config\n");
331 ret = pcmcia_loop_config(link, labpc_pcmcia_config_loop, NULL);
333 dev_warn(&link->dev, "no configuration found\n");
341 This actually configures the PCMCIA socket -- setting up
342 the I/O windows and the interrupt mapping, and putting the
343 card and host interface into "Memory and IO" mode.
345 ret = pcmcia_request_configuration(link, &link->conf);
349 /* Finally, report what we've done */
350 dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex);
351 if (link->conf.Attributes & CONF_ENABLE_IRQ)
352 printk(", irq %d", link->irq);
353 if (link->resource[0])
354 printk(" & %pR", link->resource[0]);
355 if (link->resource[1])
356 printk(" & %pR", link->resource[1]);
366 static void labpc_release(struct pcmcia_device *link)
368 dev_dbg(&link->dev, "labpc_release\n");
370 pcmcia_disable_device(link);
371 } /* labpc_release */
373 /*======================================================================
375 The card status event handler. Mostly, this schedules other
376 stuff to run after an event is received.
378 When a CARD_REMOVAL event is received, we immediately set a
379 private flag to block future accesses to this device. All the
380 functions that actually access the device should check this flag
381 to make sure the card is still present.
383 ======================================================================*/
385 static int labpc_cs_suspend(struct pcmcia_device *link)
387 struct local_info_t *local = link->priv;
389 /* Mark the device as stopped, to block IO until later */
392 } /* labpc_cs_suspend */
394 static int labpc_cs_resume(struct pcmcia_device *link)
396 struct local_info_t *local = link->priv;
400 } /* labpc_cs_resume */
402 /*====================================================================*/
404 static struct pcmcia_device_id labpc_cs_ids[] = {
405 /* N.B. These IDs should match those in labpc_cs_boards (ni_labpc.c) */
406 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0103), /* daqcard-1200 */
410 MODULE_DEVICE_TABLE(pcmcia, labpc_cs_ids);
411 MODULE_AUTHOR("Frank Mori Hess <fmhess@users.sourceforge.net>");
412 MODULE_DESCRIPTION("Comedi driver for National Instruments Lab-PC");
413 MODULE_LICENSE("GPL");
415 struct pcmcia_driver labpc_cs_driver = {
416 .probe = labpc_cs_attach,
417 .remove = labpc_cs_detach,
418 .suspend = labpc_cs_suspend,
419 .resume = labpc_cs_resume,
420 .id_table = labpc_cs_ids,
421 .owner = THIS_MODULE,
427 static int __init init_labpc_cs(void)
429 pcmcia_register_driver(&labpc_cs_driver);
433 static void __exit exit_labpc_cs(void)
435 pcmcia_unregister_driver(&labpc_cs_driver);
438 int __init labpc_init_module(void)
442 ret = init_labpc_cs();
446 return comedi_driver_register(&driver_labpc_cs);
449 void __exit labpc_exit_module(void)
452 comedi_driver_unregister(&driver_labpc_cs);
455 module_init(labpc_init_module);
456 module_exit(labpc_exit_module);