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>
70 #include "comedi_fc.h"
73 #include <pcmcia/cs_types.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, 0x103 is device 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->io.BasePort1;
145 irq = link->irq.AssignedIRQ;
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.
191 The dev_info variable is the "key" that is used to match up this
192 device driver with appropriate cards, through the card configuration
196 static const dev_info_t dev_info = "daqcard-1200";
198 struct local_info_t {
199 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);
230 /* Interrupt setup */
231 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_FORCED_PULSE;
232 link->irq.Handler = NULL;
235 General socket configuration defaults can go here. In this
236 client, we assume very little, and rely on the CIS for almost
237 everything. In most clients, many details (i.e., number, sizes,
238 and attributes of IO windows) are fixed by the nature of the
239 device, and can be hard-wired here.
241 link->conf.Attributes = 0;
242 link->conf.IntType = INT_MEMORY_AND_IO;
244 pcmcia_cur_dev = link;
249 } /* labpc_cs_attach */
251 /*======================================================================
253 This deletes a driver "instance". The device is de-registered
254 with Card Services. If it has been released, all local data
255 structures are freed. Otherwise, the structures will be freed
256 when the device is released.
258 ======================================================================*/
260 static void labpc_cs_detach(struct pcmcia_device *link)
262 dev_dbg(&link->dev, "labpc_cs_detach\n");
265 If the device is currently configured and active, we won't
266 actually delete it yet. Instead, it is marked so that when
267 the release() function is called, that will trigger a proper
270 if (link->dev_node) {
271 ((struct local_info_t *)link->priv)->stop = 1;
275 /* This points to the parent local_info_t struct (may be null) */
278 } /* labpc_cs_detach */
280 /*======================================================================
282 labpc_config() is scheduled to run after a CARD_INSERTION event
283 is received, to configure the PCMCIA socket, and to make the
284 device available to the system.
286 ======================================================================*/
288 static int labpc_pcmcia_config_loop(struct pcmcia_device *p_dev,
289 cistpl_cftable_entry_t *cfg,
290 cistpl_cftable_entry_t *dflt,
294 win_req_t *req = priv_data;
300 /* Does this card need audio output? */
301 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
302 p_dev->conf.Attributes |= CONF_ENABLE_SPKR;
303 p_dev->conf.Status = CCSR_AUDIO_ENA;
306 /* Do we need to allocate an interrupt? */
307 if (cfg->irq.IRQInfo1 || dflt->irq.IRQInfo1)
308 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
310 /* IO window settings */
311 p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0;
312 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
313 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
314 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
315 if (!(io->flags & CISTPL_IO_8BIT))
316 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
317 if (!(io->flags & CISTPL_IO_16BIT))
318 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
319 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
320 p_dev->io.BasePort1 = io->win[0].base;
321 p_dev->io.NumPorts1 = io->win[0].len;
323 p_dev->io.Attributes2 = p_dev->io.Attributes1;
324 p_dev->io.BasePort2 = io->win[1].base;
325 p_dev->io.NumPorts2 = io->win[1].len;
327 /* This reserves IO space but doesn't actually enable it */
328 if (pcmcia_request_io(p_dev, &p_dev->io) != 0)
332 if ((cfg->mem.nwin > 0) || (dflt->mem.nwin > 0)) {
334 (cfg->mem.nwin) ? &cfg->mem : &dflt->mem;
335 req->Attributes = WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM;
336 req->Attributes |= WIN_ENABLE;
337 req->Base = mem->win[0].host_addr;
338 req->Size = mem->win[0].len;
339 if (req->Size < 0x1000)
341 req->AccessSpeed = 0;
342 if (pcmcia_request_window(p_dev, req, &p_dev->win))
345 map.CardOffset = mem->win[0].card_addr;
346 if (pcmcia_map_mem_page(p_dev, p_dev->win, &map))
349 /* If we got this far, we're cool! */
354 static void labpc_config(struct pcmcia_device *link)
356 struct local_info_t *dev = link->priv;
360 dev_dbg(&link->dev, "labpc_config\n");
362 ret = pcmcia_loop_config(link, labpc_pcmcia_config_loop, &req);
364 dev_warn(&link->dev, "no configuration found\n");
369 Allocate an interrupt line. Note that this does not assign a
370 handler to the interrupt, unless the 'Handler' member of the
371 irq structure is initialized.
373 if (link->conf.Attributes & CONF_ENABLE_IRQ) {
374 ret = pcmcia_request_irq(link, &link->irq);
380 This actually configures the PCMCIA socket -- setting up
381 the I/O windows and the interrupt mapping, and putting the
382 card and host interface into "Memory and IO" mode.
384 ret = pcmcia_request_configuration(link, &link->conf);
389 At this point, the dev_node_t structure(s) need to be
390 initialized and arranged in a linked list at link->dev.
392 sprintf(dev->node.dev_name, "daqcard-1200");
393 dev->node.major = dev->node.minor = 0;
394 link->dev_node = &dev->node;
396 /* Finally, report what we've done */
397 printk(KERN_INFO "%s: index 0x%02x",
398 dev->node.dev_name, link->conf.ConfigIndex);
399 if (link->conf.Attributes & CONF_ENABLE_IRQ)
400 printk(", irq %d", link->irq.AssignedIRQ);
401 if (link->io.NumPorts1)
402 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
403 link->io.BasePort1 + link->io.NumPorts1 - 1);
404 if (link->io.NumPorts2)
405 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
406 link->io.BasePort2 + link->io.NumPorts2 - 1);
408 printk(", mem 0x%06lx-0x%06lx", req.Base,
409 req.Base + req.Size - 1);
419 static void labpc_release(struct pcmcia_device *link)
421 dev_dbg(&link->dev, "labpc_release\n");
423 pcmcia_disable_device(link);
424 } /* labpc_release */
426 /*======================================================================
428 The card status event handler. Mostly, this schedules other
429 stuff to run after an event is received.
431 When a CARD_REMOVAL event is received, we immediately set a
432 private flag to block future accesses to this device. All the
433 functions that actually access the device should check this flag
434 to make sure the card is still present.
436 ======================================================================*/
438 static int labpc_cs_suspend(struct pcmcia_device *link)
440 struct local_info_t *local = link->priv;
442 /* Mark the device as stopped, to block IO until later */
445 } /* labpc_cs_suspend */
447 static int labpc_cs_resume(struct pcmcia_device *link)
449 struct local_info_t *local = link->priv;
453 } /* labpc_cs_resume */
455 /*====================================================================*/
457 static struct pcmcia_device_id labpc_cs_ids[] = {
458 /* N.B. These IDs should match those in labpc_cs_boards (ni_labpc.c) */
459 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0103), /* daqcard-1200 */
463 MODULE_DEVICE_TABLE(pcmcia, labpc_cs_ids);
465 struct pcmcia_driver labpc_cs_driver = {
466 .probe = labpc_cs_attach,
467 .remove = labpc_cs_detach,
468 .suspend = labpc_cs_suspend,
469 .resume = labpc_cs_resume,
470 .id_table = labpc_cs_ids,
471 .owner = THIS_MODULE,
477 static int __init init_labpc_cs(void)
479 pcmcia_register_driver(&labpc_cs_driver);
483 static void __exit exit_labpc_cs(void)
485 pcmcia_unregister_driver(&labpc_cs_driver);
488 int __init labpc_init_module(void)
492 ret = init_labpc_cs();
496 return comedi_driver_register(&driver_labpc_cs);
499 void __exit labpc_exit_module(void)
502 comedi_driver_unregister(&driver_labpc_cs);
505 MODULE_LICENSE("GPL");
506 module_init(labpc_init_module);
507 module_exit(labpc_exit_module);