Commit | Line | Data |
---|---|---|
6baef150 CC |
1 | /* |
2 | comedi/drivers/pcmuio.c | |
3 | Driver for Winsystems PC-104 based 48-channel and 96-channel DIO boards. | |
4 | ||
5 | COMEDI - Linux Control and Measurement Device Interface | |
6 | Copyright (C) 2006 Calin A. Culianu <calin@ajvar.org> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | /* | |
23 | Driver: pcmuio | |
24 | Description: A driver for the PCM-UIO48A and PCM-UIO96A boards from Winsystems. | |
25 | Devices: [Winsystems] PCM-UIO48A (pcmuio48), PCM-UIO96A (pcmuio96) | |
26 | Author: Calin Culianu <calin@ajvar.org> | |
27 | Updated: Fri, 13 Jan 2006 12:01:01 -0500 | |
28 | Status: works | |
29 | ||
30 | A driver for the relatively straightforward-to-program PCM-UIO48A and | |
31 | PCM-UIO96A boards from Winsystems. These boards use either one or two | |
32 | (in the 96-DIO version) WS16C48 ASIC HighDensity I/O Chips (HDIO). | |
33 | This chip is interesting in that each I/O line is individually | |
34 | programmable for INPUT or OUTPUT (thus comedi_dio_config can be done | |
35 | on a per-channel basis). Also, each chip supports edge-triggered | |
36 | interrupts for the first 24 I/O lines. Of course, since the | |
37 | 96-channel version of the board has two ASICs, it can detect polarity | |
38 | changes on up to 48 I/O lines. Since this is essentially an (non-PnP) | |
39 | ISA board, I/O Address and IRQ selection are done through jumpers on | |
40 | the board. You need to pass that information to this driver as the | |
41 | first and second comedi_config option, respectively. Note that the | |
42 | 48-channel version uses 16 bytes of IO memory and the 96-channel | |
43 | version uses 32-bytes (in case you are worried about conflicts). The | |
44 | 48-channel board is split into two 24-channel comedi subdevices. | |
45 | The 96-channel board is split into 4 24-channel DIO subdevices. | |
46 | ||
47 | Note that IRQ support has been added, but it is untested. | |
48 | ||
49 | To use edge-detection IRQ support, pass the IRQs of both ASICS | |
50 | (for the 96 channel version) or just 1 ASIC (for 48-channel version). | |
51 | Then, use use comedi_commands with TRIG_NOW. | |
52 | Your callback will be called each time an edge is triggered, and the data | |
53 | values will be two sample_t's, which should be concatenated to form one | |
54 | 32-bit unsigned int. This value is the mask of channels that had | |
55 | edges detected from your channel list. Note that the bits positions | |
56 | in the mask correspond to positions in your chanlist when you specified | |
57 | the command and *not* channel id's! | |
58 | ||
59 | To set the polarity of the edge-detection interrupts pass a nonzero value for | |
60 | either CR_RANGE or CR_AREF for edge-up polarity, or a zero value for both | |
61 | CR_RANGE and CR_AREF if you want edge-down polarity. | |
62 | ||
63 | In the 48-channel version: | |
64 | ||
65 | On subdev 0, the first 24 channels channels are edge-detect channels. | |
66 | ||
67 | In the 96-channel board you have the collowing channels that can do edge detection: | |
68 | ||
69 | subdev 0, channels 0-24 (first 24 channels of 1st ASIC) | |
70 | subdev 2, channels 0-24 (first 24 channels of 2nd ASIC) | |
71 | ||
72 | Configuration Options: | |
73 | [0] - I/O port base address | |
74 | [1] - IRQ (for first ASIC, or first 24 channels) | |
75 | [2] - IRQ for second ASIC (pcmuio96 only - IRQ for chans 48-72 .. can be the same as first irq!) | |
76 | */ | |
77 | ||
25436dc9 | 78 | #include <linux/interrupt.h> |
5a0e3ad6 | 79 | #include <linux/slab.h> |
6baef150 | 80 | #include "../comedidev.h" |
0b8f754a | 81 | #include "pcm_common.h" |
6baef150 CC |
82 | |
83 | #include <linux/pci.h> /* for PCI devices */ | |
84 | ||
6baef150 CC |
85 | #define CHANS_PER_PORT 8 |
86 | #define PORTS_PER_ASIC 6 | |
87 | #define INTR_PORTS_PER_ASIC 3 | |
88 | #define MAX_CHANS_PER_SUBDEV 24 /* number of channels per comedi subdevice */ | |
89 | #define PORTS_PER_SUBDEV (MAX_CHANS_PER_SUBDEV/CHANS_PER_PORT) | |
90 | #define CHANS_PER_ASIC (CHANS_PER_PORT*PORTS_PER_ASIC) | |
91 | #define INTR_CHANS_PER_ASIC 24 | |
92 | #define INTR_PORTS_PER_SUBDEV (INTR_CHANS_PER_ASIC/CHANS_PER_PORT) | |
93 | #define MAX_DIO_CHANS (PORTS_PER_ASIC*2*CHANS_PER_PORT) | |
94 | #define MAX_ASICS (MAX_DIO_CHANS/CHANS_PER_ASIC) | |
95 | #define SDEV_NO ((int)(s - dev->subdevices)) | |
96 | #define CALC_N_SUBDEVS(nchans) ((nchans)/MAX_CHANS_PER_SUBDEV + (!!((nchans)%MAX_CHANS_PER_SUBDEV)) /*+ (nchans > INTR_CHANS_PER_ASIC ? 2 : 1)*/) | |
97 | /* IO Memory sizes */ | |
98 | #define ASIC_IOSIZE (0x10) | |
99 | #define PCMUIO48_IOSIZE ASIC_IOSIZE | |
100 | #define PCMUIO96_IOSIZE (ASIC_IOSIZE*2) | |
101 | ||
102 | /* Some offsets - these are all in the 16byte IO memory offset from | |
103 | the base address. Note that there is a paging scheme to swap out | |
104 | offsets 0x8-0xA using the PAGELOCK register. See the table below. | |
105 | ||
106 | Register(s) Pages R/W? Description | |
107 | -------------------------------------------------------------- | |
108 | REG_PORTx All R/W Read/Write/Configure IO | |
109 | REG_INT_PENDING All ReadOnly Quickly see which INT_IDx has int. | |
110 | REG_PAGELOCK All WriteOnly Select a page | |
111 | REG_POLx Pg. 1 only WriteOnly Select edge-detection polarity | |
112 | REG_ENABx Pg. 2 only WriteOnly Enable/Disable edge-detect. int. | |
113 | REG_INT_IDx Pg. 3 only R/W See which ports/bits have ints. | |
114 | */ | |
115 | #define REG_PORT0 0x0 | |
116 | #define REG_PORT1 0x1 | |
117 | #define REG_PORT2 0x2 | |
118 | #define REG_PORT3 0x3 | |
119 | #define REG_PORT4 0x4 | |
120 | #define REG_PORT5 0x5 | |
121 | #define REG_INT_PENDING 0x6 | |
122 | #define REG_PAGELOCK 0x7 /* page selector register, upper 2 bits select a page | |
123 | and bits 0-5 are used to 'lock down' a particular | |
124 | port above to make it readonly. */ | |
125 | #define REG_POL0 0x8 | |
126 | #define REG_POL1 0x9 | |
127 | #define REG_POL2 0xA | |
128 | #define REG_ENAB0 0x8 | |
129 | #define REG_ENAB1 0x9 | |
130 | #define REG_ENAB2 0xA | |
131 | #define REG_INT_ID0 0x8 | |
132 | #define REG_INT_ID1 0x9 | |
133 | #define REG_INT_ID2 0xA | |
134 | ||
135 | #define NUM_PAGED_REGS 3 | |
136 | #define NUM_PAGES 4 | |
137 | #define FIRST_PAGED_REG 0x8 | |
138 | #define REG_PAGE_BITOFFSET 6 | |
139 | #define REG_LOCK_BITOFFSET 0 | |
140 | #define REG_PAGE_MASK (~((0x1<<REG_PAGE_BITOFFSET)-1)) | |
141 | #define REG_LOCK_MASK ~(REG_PAGE_MASK) | |
142 | #define PAGE_POL 1 | |
143 | #define PAGE_ENAB 2 | |
144 | #define PAGE_INT_ID 3 | |
145 | ||
146 | /* | |
147 | * Board descriptions for two imaginary boards. Describing the | |
148 | * boards in this way is optional, and completely driver-dependent. | |
149 | * Some drivers use arrays such as this, other do not. | |
150 | */ | |
70a6001a | 151 | struct pcmuio_board { |
6baef150 CC |
152 | const char *name; |
153 | const int num_asics; | |
154 | const int num_channels_per_port; | |
155 | const int num_ports; | |
70a6001a | 156 | }; |
6baef150 | 157 | |
70a6001a | 158 | static const struct pcmuio_board pcmuio_boards[] = { |
6baef150 | 159 | { |
0a85b6f0 MT |
160 | .name = "pcmuio48", |
161 | .num_asics = 1, | |
162 | .num_ports = 6, | |
163 | }, | |
6baef150 | 164 | { |
0a85b6f0 MT |
165 | .name = "pcmuio96", |
166 | .num_asics = 2, | |
167 | .num_ports = 12, | |
168 | }, | |
6baef150 CC |
169 | }; |
170 | ||
171 | /* | |
172 | * Useful for shorthand access to the particular board structure | |
173 | */ | |
70a6001a | 174 | #define thisboard ((const struct pcmuio_board *)dev->board_ptr) |
6baef150 CC |
175 | |
176 | /* this structure is for data unique to this subdevice. */ | |
e15849e5 | 177 | struct pcmuio_subdev_private { |
6baef150 CC |
178 | /* mapping of halfwords (bytes) in port/chanarray to iobase */ |
179 | unsigned long iobases[PORTS_PER_SUBDEV]; | |
180 | ||
181 | /* The below is only used for intr subdevices */ | |
182 | struct { | |
183 | int asic; /* if non-negative, this subdev has an interrupt asic */ | |
184 | int first_chan; /* if nonnegative, the first channel id for | |
185 | interrupts. */ | |
186 | int num_asic_chans; /* the number of asic channels in this subdev | |
187 | that have interrutps */ | |
188 | int asic_chan; /* if nonnegative, the first channel id with | |
189 | respect to the asic that has interrupts */ | |
190 | int enabled_mask; /* subdev-relative channel mask for channels | |
191 | we are interested in */ | |
192 | int active; | |
193 | int stop_count; | |
194 | int continuous; | |
195 | spinlock_t spinlock; | |
196 | } intr; | |
e15849e5 | 197 | }; |
6baef150 CC |
198 | |
199 | /* this structure is for data unique to this hardware driver. If | |
200 | several hardware drivers keep similar information in this structure, | |
71b5f4f1 | 201 | feel free to suggest moving the variable to the struct comedi_device struct. */ |
055f6636 | 202 | struct pcmuio_private { |
6baef150 CC |
203 | struct { |
204 | unsigned char pagelock; /* current page and lock */ | |
205 | unsigned char pol[NUM_PAGED_REGS]; /* shadow of POLx registers */ | |
206 | unsigned char enab[NUM_PAGED_REGS]; /* shadow of ENABx registers */ | |
207 | int num; | |
208 | unsigned long iobase; | |
209 | unsigned int irq; | |
210 | spinlock_t spinlock; | |
211 | } asics[MAX_ASICS]; | |
e15849e5 | 212 | struct pcmuio_subdev_private *sprivs; |
055f6636 | 213 | }; |
6baef150 CC |
214 | |
215 | /* | |
216 | * most drivers define the following macro to make it easy to | |
217 | * access the private structure. | |
218 | */ | |
055f6636 | 219 | #define devpriv ((struct pcmuio_private *)dev->private) |
e15849e5 | 220 | #define subpriv ((struct pcmuio_subdev_private *)s->private) |
6baef150 | 221 | /* |
139dfbdf | 222 | * The struct comedi_driver structure tells the Comedi core module |
6baef150 CC |
223 | * which functions to call to configure/deconfigure (attach/detach) |
224 | * the board, and also about the kernel module that contains | |
225 | * the device code. | |
226 | */ | |
0a85b6f0 MT |
227 | static int pcmuio_attach(struct comedi_device *dev, |
228 | struct comedi_devconfig *it); | |
da91b269 | 229 | static int pcmuio_detach(struct comedi_device *dev); |
6baef150 | 230 | |
139dfbdf | 231 | static struct comedi_driver driver = { |
68c3dbff BP |
232 | .driver_name = "pcmuio", |
233 | .module = THIS_MODULE, | |
234 | .attach = pcmuio_attach, | |
235 | .detach = pcmuio_detach, | |
6baef150 CC |
236 | /* It is not necessary to implement the following members if you are |
237 | * writing a driver for a ISA PnP or PCI card */ | |
238 | /* Most drivers will support multiple types of boards by | |
239 | * having an array of board structures. These were defined | |
240 | * in pcmuio_boards[] above. Note that the element 'name' | |
241 | * was first in the structure -- Comedi uses this fact to | |
242 | * extract the name of the board without knowing any details | |
243 | * about the structure except for its length. | |
244 | * When a device is attached (by comedi_config), the name | |
245 | * of the device is given to Comedi, and Comedi tries to | |
246 | * match it by going through the list of board names. If | |
247 | * there is a match, the address of the pointer is put | |
248 | * into dev->board_ptr and driver->attach() is called. | |
249 | * | |
250 | * Note that these are not necessary if you can determine | |
251 | * the type of board in software. ISA PnP, PCI, and PCMCIA | |
252 | * devices are such boards. | |
253 | */ | |
68c3dbff BP |
254 | .board_name = &pcmuio_boards[0].name, |
255 | .offset = sizeof(struct pcmuio_board), | |
8629efa4 | 256 | .num_names = ARRAY_SIZE(pcmuio_boards), |
6baef150 CC |
257 | }; |
258 | ||
0a85b6f0 MT |
259 | static int pcmuio_dio_insn_bits(struct comedi_device *dev, |
260 | struct comedi_subdevice *s, | |
261 | struct comedi_insn *insn, unsigned int *data); | |
262 | static int pcmuio_dio_insn_config(struct comedi_device *dev, | |
263 | struct comedi_subdevice *s, | |
264 | struct comedi_insn *insn, unsigned int *data); | |
6baef150 | 265 | |
70265d24 | 266 | static irqreturn_t interrupt_pcmuio(int irq, void *d); |
34c43922 | 267 | static void pcmuio_stop_intr(struct comedi_device *, struct comedi_subdevice *); |
814900c9 BP |
268 | static int pcmuio_cancel(struct comedi_device *dev, struct comedi_subdevice *s); |
269 | static int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s); | |
270 | static int pcmuio_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, | |
0a85b6f0 | 271 | struct comedi_cmd *cmd); |
6baef150 CC |
272 | |
273 | /* some helper functions to deal with specifics of this device's registers */ | |
814900c9 BP |
274 | static void init_asics(struct comedi_device *dev); /* sets up/clears ASIC chips to defaults */ |
275 | static void switch_page(struct comedi_device *dev, int asic, int page); | |
6baef150 | 276 | #ifdef notused |
814900c9 BP |
277 | static void lock_port(struct comedi_device *dev, int asic, int port); |
278 | static void unlock_port(struct comedi_device *dev, int asic, int port); | |
6baef150 CC |
279 | #endif |
280 | ||
281 | /* | |
282 | * Attach is called by the Comedi core to configure the driver | |
283 | * for a particular board. If you specified a board_name array | |
284 | * in the driver structure, dev->board_ptr contains that | |
285 | * address. | |
286 | */ | |
da91b269 | 287 | static int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
6baef150 | 288 | { |
34c43922 | 289 | struct comedi_subdevice *s; |
6baef150 CC |
290 | int sdev_no, chans_left, n_subdevs, port, asic, thisasic_chanct = 0; |
291 | unsigned long iobase; | |
292 | unsigned int irq[MAX_ASICS]; | |
293 | ||
294 | iobase = it->options[0]; | |
295 | irq[0] = it->options[1]; | |
296 | irq[1] = it->options[2]; | |
297 | ||
298 | printk("comedi%d: %s: io: %lx ", dev->minor, driver.driver_name, | |
0a85b6f0 | 299 | iobase); |
6baef150 CC |
300 | |
301 | dev->iobase = iobase; | |
302 | ||
303 | if (!iobase || !request_region(iobase, | |
0a85b6f0 MT |
304 | thisboard->num_asics * ASIC_IOSIZE, |
305 | driver.driver_name)) { | |
6baef150 CC |
306 | printk("I/O port conflict\n"); |
307 | return -EIO; | |
308 | } | |
309 | ||
310 | /* | |
311 | * Initialize dev->board_name. Note that we can use the "thisboard" | |
312 | * macro now, since we just initialized it in the last line. | |
313 | */ | |
314 | dev->board_name = thisboard->name; | |
315 | ||
316 | /* | |
317 | * Allocate the private structure area. alloc_private() is a | |
318 | * convenient macro defined in comedidev.h. | |
319 | */ | |
055f6636 | 320 | if (alloc_private(dev, sizeof(struct pcmuio_private)) < 0) { |
6baef150 CC |
321 | printk("cannot allocate private data structure\n"); |
322 | return -ENOMEM; | |
323 | } | |
324 | ||
325 | for (asic = 0; asic < MAX_ASICS; ++asic) { | |
326 | devpriv->asics[asic].num = asic; | |
327 | devpriv->asics[asic].iobase = dev->iobase + asic * ASIC_IOSIZE; | |
328 | devpriv->asics[asic].irq = 0; /* this gets actually set at the end of | |
329 | this function when we | |
5f74ea14 | 330 | request_irqs */ |
6baef150 CC |
331 | spin_lock_init(&devpriv->asics[asic].spinlock); |
332 | } | |
333 | ||
334 | chans_left = CHANS_PER_ASIC * thisboard->num_asics; | |
335 | n_subdevs = CALC_N_SUBDEVS(chans_left); | |
336 | devpriv->sprivs = | |
0a85b6f0 MT |
337 | kcalloc(n_subdevs, sizeof(struct pcmuio_subdev_private), |
338 | GFP_KERNEL); | |
6baef150 CC |
339 | if (!devpriv->sprivs) { |
340 | printk("cannot allocate subdevice private data structures\n"); | |
341 | return -ENOMEM; | |
342 | } | |
343 | /* | |
344 | * Allocate the subdevice structures. alloc_subdevice() is a | |
345 | * convenient macro defined in comedidev.h. | |
346 | * | |
347 | * Allocate 2 subdevs (32 + 16 DIO lines) or 3 32 DIO subdevs for the | |
348 | * 96-channel version of the board. | |
349 | */ | |
350 | if (alloc_subdevices(dev, n_subdevs) < 0) { | |
351 | printk("cannot allocate subdevice data structures\n"); | |
352 | return -ENOMEM; | |
353 | } | |
354 | ||
355 | port = 0; | |
356 | asic = 0; | |
357 | for (sdev_no = 0; sdev_no < (int)dev->n_subdevices; ++sdev_no) { | |
358 | int byte_no; | |
359 | ||
360 | s = dev->subdevices + sdev_no; | |
361 | s->private = devpriv->sprivs + sdev_no; | |
362 | s->maxdata = 1; | |
363 | s->range_table = &range_digital; | |
364 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE; | |
365 | s->type = COMEDI_SUBD_DIO; | |
366 | s->insn_bits = pcmuio_dio_insn_bits; | |
367 | s->insn_config = pcmuio_dio_insn_config; | |
214e7b5c | 368 | s->n_chan = min(chans_left, MAX_CHANS_PER_SUBDEV); |
6baef150 CC |
369 | subpriv->intr.asic = -1; |
370 | subpriv->intr.first_chan = -1; | |
371 | subpriv->intr.asic_chan = -1; | |
372 | subpriv->intr.num_asic_chans = -1; | |
373 | subpriv->intr.active = 0; | |
374 | s->len_chanlist = 1; | |
375 | ||
376 | /* save the ioport address for each 'port' of 8 channels in the | |
377 | subdevice */ | |
378 | for (byte_no = 0; byte_no < PORTS_PER_SUBDEV; ++byte_no, ++port) { | |
379 | if (port >= PORTS_PER_ASIC) { | |
380 | port = 0; | |
381 | ++asic; | |
382 | thisasic_chanct = 0; | |
383 | } | |
384 | subpriv->iobases[byte_no] = | |
0a85b6f0 | 385 | devpriv->asics[asic].iobase + port; |
6baef150 CC |
386 | |
387 | if (thisasic_chanct < | |
0a85b6f0 MT |
388 | CHANS_PER_PORT * INTR_PORTS_PER_ASIC |
389 | && subpriv->intr.asic < 0) { | |
6baef150 CC |
390 | /* this is an interrupt subdevice, so setup the struct */ |
391 | subpriv->intr.asic = asic; | |
392 | subpriv->intr.active = 0; | |
393 | subpriv->intr.stop_count = 0; | |
394 | subpriv->intr.first_chan = byte_no * 8; | |
395 | subpriv->intr.asic_chan = thisasic_chanct; | |
396 | subpriv->intr.num_asic_chans = | |
0a85b6f0 | 397 | s->n_chan - subpriv->intr.first_chan; |
6baef150 CC |
398 | dev->read_subdev = s; |
399 | s->subdev_flags |= SDF_CMD_READ; | |
400 | s->cancel = pcmuio_cancel; | |
401 | s->do_cmd = pcmuio_cmd; | |
402 | s->do_cmdtest = pcmuio_cmdtest; | |
403 | s->len_chanlist = subpriv->intr.num_asic_chans; | |
404 | } | |
405 | thisasic_chanct += CHANS_PER_PORT; | |
406 | } | |
407 | spin_lock_init(&subpriv->intr.spinlock); | |
408 | ||
409 | chans_left -= s->n_chan; | |
410 | ||
411 | if (!chans_left) { | |
412 | asic = 0; /* reset the asic to our first asic, to do intr subdevs */ | |
413 | port = 0; | |
414 | } | |
415 | ||
416 | } | |
417 | ||
418 | init_asics(dev); /* clear out all the registers, basically */ | |
419 | ||
420 | for (asic = 0; irq[0] && asic < MAX_ASICS; ++asic) { | |
421 | if (irq[asic] | |
0a85b6f0 MT |
422 | && request_irq(irq[asic], interrupt_pcmuio, |
423 | IRQF_SHARED, thisboard->name, dev)) { | |
6baef150 CC |
424 | int i; |
425 | /* unroll the allocated irqs.. */ | |
426 | for (i = asic - 1; i >= 0; --i) { | |
5f74ea14 | 427 | free_irq(irq[i], dev); |
6baef150 CC |
428 | devpriv->asics[i].irq = irq[i] = 0; |
429 | } | |
430 | irq[asic] = 0; | |
431 | } | |
432 | devpriv->asics[asic].irq = irq[asic]; | |
433 | } | |
434 | ||
435 | dev->irq = irq[0]; /* grr.. wish comedi dev struct supported multiple | |
436 | irqs.. */ | |
437 | ||
438 | if (irq[0]) { | |
439 | printk("irq: %u ", irq[0]); | |
440 | if (irq[1] && thisboard->num_asics == 2) | |
441 | printk("second ASIC irq: %u ", irq[1]); | |
442 | } else { | |
443 | printk("(IRQ mode disabled) "); | |
444 | } | |
445 | ||
446 | printk("attached\n"); | |
447 | ||
448 | return 1; | |
449 | } | |
450 | ||
451 | /* | |
452 | * _detach is called to deconfigure a device. It should deallocate | |
453 | * resources. | |
454 | * This function is also called when _attach() fails, so it should be | |
455 | * careful not to release resources that were not necessarily | |
456 | * allocated by _attach(). dev->private and dev->subdevices are | |
457 | * deallocated automatically by the core. | |
458 | */ | |
da91b269 | 459 | static int pcmuio_detach(struct comedi_device *dev) |
6baef150 CC |
460 | { |
461 | int i; | |
462 | ||
463 | printk("comedi%d: %s: remove\n", dev->minor, driver.driver_name); | |
464 | if (dev->iobase) | |
465 | release_region(dev->iobase, ASIC_IOSIZE * thisboard->num_asics); | |
466 | ||
467 | for (i = 0; i < MAX_ASICS; ++i) { | |
468 | if (devpriv->asics[i].irq) | |
5f74ea14 | 469 | free_irq(devpriv->asics[i].irq, dev); |
6baef150 CC |
470 | } |
471 | ||
472 | if (devpriv && devpriv->sprivs) | |
473 | kfree(devpriv->sprivs); | |
474 | ||
475 | return 0; | |
476 | } | |
477 | ||
478 | /* DIO devices are slightly special. Although it is possible to | |
479 | * implement the insn_read/insn_write interface, it is much more | |
480 | * useful to applications if you implement the insn_bits interface. | |
481 | * This allows packed reading/writing of the DIO channels. The | |
482 | * comedi core can convert between insn_bits and insn_read/write */ | |
0a85b6f0 MT |
483 | static int pcmuio_dio_insn_bits(struct comedi_device *dev, |
484 | struct comedi_subdevice *s, | |
485 | struct comedi_insn *insn, unsigned int *data) | |
6baef150 CC |
486 | { |
487 | int byte_no; | |
488 | if (insn->n != 2) | |
489 | return -EINVAL; | |
490 | ||
491 | /* NOTE: | |
492 | reading a 0 means this channel was high | |
493 | writine a 0 sets the channel high | |
494 | reading a 1 means this channel was low | |
495 | writing a 1 means set this channel low | |
496 | ||
497 | Therefore everything is always inverted. */ | |
498 | ||
499 | /* The insn data is a mask in data[0] and the new data | |
500 | * in data[1], each channel cooresponding to a bit. */ | |
501 | ||
502 | #ifdef DAMMIT_ITS_BROKEN | |
503 | /* DEBUG */ | |
504 | printk("write mask: %08x data: %08x\n", data[0], data[1]); | |
505 | #endif | |
506 | ||
507 | s->state = 0; | |
508 | ||
509 | for (byte_no = 0; byte_no < s->n_chan / CHANS_PER_PORT; ++byte_no) { | |
510 | /* address of 8-bit port */ | |
511 | unsigned long ioaddr = subpriv->iobases[byte_no], | |
0a85b6f0 MT |
512 | /* bit offset of port in 32-bit doubleword */ |
513 | offset = byte_no * 8; | |
6baef150 CC |
514 | /* this 8-bit port's data */ |
515 | unsigned char byte = 0, | |
0a85b6f0 MT |
516 | /* The write mask for this port (if any) */ |
517 | write_mask_byte = (data[0] >> offset) & 0xff, | |
518 | /* The data byte for this port */ | |
519 | data_byte = (data[1] >> offset) & 0xff; | |
6baef150 CC |
520 | |
521 | byte = inb(ioaddr); /* read all 8-bits for this port */ | |
522 | ||
523 | #ifdef DAMMIT_ITS_BROKEN | |
524 | /* DEBUG */ | |
0a85b6f0 MT |
525 | printk |
526 | ("byte %d wmb %02x db %02x offset %02d io %04x, data_in %02x ", | |
527 | byte_no, (unsigned)write_mask_byte, (unsigned)data_byte, | |
528 | offset, ioaddr, (unsigned)byte); | |
6baef150 CC |
529 | #endif |
530 | ||
531 | if (write_mask_byte) { | |
532 | /* this byte has some write_bits -- so set the output lines */ | |
533 | byte &= ~write_mask_byte; /* clear bits for write mask */ | |
534 | byte |= ~data_byte & write_mask_byte; /* set to inverted data_byte */ | |
535 | /* Write out the new digital output state */ | |
536 | outb(byte, ioaddr); | |
537 | } | |
538 | #ifdef DAMMIT_ITS_BROKEN | |
539 | /* DEBUG */ | |
540 | printk("data_out_byte %02x\n", (unsigned)byte); | |
541 | #endif | |
542 | /* save the digital input lines for this byte.. */ | |
543 | s->state |= ((unsigned int)byte) << offset; | |
544 | } | |
545 | ||
546 | /* now return the DIO lines to data[1] - note they came inverted! */ | |
547 | data[1] = ~s->state; | |
548 | ||
549 | #ifdef DAMMIT_ITS_BROKEN | |
550 | /* DEBUG */ | |
551 | printk("s->state %08x data_out %08x\n", s->state, data[1]); | |
552 | #endif | |
553 | ||
554 | return 2; | |
555 | } | |
556 | ||
557 | /* The input or output configuration of each digital line is | |
558 | * configured by a special insn_config instruction. chanspec | |
559 | * contains the channel to be changed, and data[0] contains the | |
560 | * value COMEDI_INPUT or COMEDI_OUTPUT. */ | |
0a85b6f0 MT |
561 | static int pcmuio_dio_insn_config(struct comedi_device *dev, |
562 | struct comedi_subdevice *s, | |
563 | struct comedi_insn *insn, unsigned int *data) | |
6baef150 CC |
564 | { |
565 | int chan = CR_CHAN(insn->chanspec), byte_no = chan / 8, bit_no = | |
0a85b6f0 | 566 | chan % 8; |
6baef150 CC |
567 | unsigned long ioaddr; |
568 | unsigned char byte; | |
569 | ||
570 | /* Compute ioaddr for this channel */ | |
571 | ioaddr = subpriv->iobases[byte_no]; | |
572 | ||
573 | /* NOTE: | |
574 | writing a 0 an IO channel's bit sets the channel to INPUT | |
575 | and pulls the line high as well | |
576 | ||
577 | writing a 1 to an IO channel's bit pulls the line low | |
578 | ||
579 | All channels are implicitly always in OUTPUT mode -- but when | |
580 | they are high they can be considered to be in INPUT mode.. | |
581 | ||
582 | Thus, we only force channels low if the config request was INPUT, | |
583 | otherwise we do nothing to the hardware. */ | |
584 | ||
585 | switch (data[0]) { | |
586 | case INSN_CONFIG_DIO_OUTPUT: | |
587 | /* save to io_bits -- don't actually do anything since | |
588 | all input channels are also output channels... */ | |
589 | s->io_bits |= 1 << chan; | |
590 | break; | |
591 | case INSN_CONFIG_DIO_INPUT: | |
592 | /* write a 0 to the actual register representing the channel | |
593 | to set it to 'input'. 0 means "float high". */ | |
594 | byte = inb(ioaddr); | |
595 | byte &= ~(1 << bit_no); | |
596 | /**< set input channel to '0' */ | |
597 | ||
598 | /* write out byte -- this is the only time we actually affect the | |
599 | hardware as all channels are implicitly output -- but input | |
600 | channels are set to float-high */ | |
601 | outb(byte, ioaddr); | |
602 | ||
603 | /* save to io_bits */ | |
604 | s->io_bits &= ~(1 << chan); | |
605 | break; | |
606 | ||
607 | case INSN_CONFIG_DIO_QUERY: | |
25985edc | 608 | /* retrieve from shadow register */ |
6baef150 | 609 | data[1] = |
0a85b6f0 | 610 | (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT; |
6baef150 CC |
611 | return insn->n; |
612 | break; | |
613 | ||
614 | default: | |
615 | return -EINVAL; | |
616 | break; | |
617 | } | |
618 | ||
619 | return insn->n; | |
620 | } | |
621 | ||
da91b269 | 622 | static void init_asics(struct comedi_device *dev) |
6baef150 CC |
623 | { /* sets up an |
624 | ASIC chip to defaults */ | |
625 | int asic; | |
626 | ||
627 | for (asic = 0; asic < thisboard->num_asics; ++asic) { | |
628 | int port, page; | |
629 | unsigned long baseaddr = dev->iobase + asic * ASIC_IOSIZE; | |
630 | ||
631 | switch_page(dev, asic, 0); /* switch back to page 0 */ | |
632 | ||
633 | /* first, clear all the DIO port bits */ | |
634 | for (port = 0; port < PORTS_PER_ASIC; ++port) | |
635 | outb(0, baseaddr + REG_PORT0 + port); | |
636 | ||
637 | /* Next, clear all the paged registers for each page */ | |
638 | for (page = 1; page < NUM_PAGES; ++page) { | |
639 | int reg; | |
640 | /* now clear all the paged registers */ | |
641 | switch_page(dev, asic, page); | |
642 | for (reg = FIRST_PAGED_REG; | |
0a85b6f0 | 643 | reg < FIRST_PAGED_REG + NUM_PAGED_REGS; ++reg) |
6baef150 CC |
644 | outb(0, baseaddr + reg); |
645 | } | |
646 | ||
647 | /* DEBUG set rising edge interrupts on port0 of both asics */ | |
648 | /*switch_page(dev, asic, PAGE_POL); | |
649 | outb(0xff, baseaddr + REG_POL0); | |
650 | switch_page(dev, asic, PAGE_ENAB); | |
651 | outb(0xff, baseaddr + REG_ENAB0); */ | |
652 | /* END DEBUG */ | |
653 | ||
654 | switch_page(dev, asic, 0); /* switch back to default page 0 */ | |
655 | ||
656 | } | |
657 | } | |
658 | ||
da91b269 | 659 | static void switch_page(struct comedi_device *dev, int asic, int page) |
6baef150 CC |
660 | { |
661 | if (asic < 0 || asic >= thisboard->num_asics) | |
662 | return; /* paranoia */ | |
663 | if (page < 0 || page >= NUM_PAGES) | |
664 | return; /* more paranoia */ | |
665 | ||
666 | devpriv->asics[asic].pagelock &= ~REG_PAGE_MASK; | |
667 | devpriv->asics[asic].pagelock |= page << REG_PAGE_BITOFFSET; | |
668 | ||
669 | /* now write out the shadow register */ | |
670 | outb(devpriv->asics[asic].pagelock, | |
0a85b6f0 | 671 | dev->iobase + ASIC_IOSIZE * asic + REG_PAGELOCK); |
6baef150 CC |
672 | } |
673 | ||
674 | #ifdef notused | |
da91b269 | 675 | static void lock_port(struct comedi_device *dev, int asic, int port) |
6baef150 CC |
676 | { |
677 | if (asic < 0 || asic >= thisboard->num_asics) | |
678 | return; /* paranoia */ | |
679 | if (port < 0 || port >= PORTS_PER_ASIC) | |
680 | return; /* more paranoia */ | |
681 | ||
682 | devpriv->asics[asic].pagelock |= 0x1 << port; | |
683 | /* now write out the shadow register */ | |
684 | outb(devpriv->asics[asic].pagelock, | |
0a85b6f0 | 685 | dev->iobase + ASIC_IOSIZE * asic + REG_PAGELOCK); |
6baef150 CC |
686 | } |
687 | ||
da91b269 | 688 | static void unlock_port(struct comedi_device *dev, int asic, int port) |
6baef150 CC |
689 | { |
690 | if (asic < 0 || asic >= thisboard->num_asics) | |
691 | return; /* paranoia */ | |
692 | if (port < 0 || port >= PORTS_PER_ASIC) | |
693 | return; /* more paranoia */ | |
694 | devpriv->asics[asic].pagelock &= ~(0x1 << port) | REG_LOCK_MASK; | |
695 | /* now write out the shadow register */ | |
696 | outb(devpriv->asics[asic].pagelock, | |
0a85b6f0 | 697 | dev->iobase + ASIC_IOSIZE * asic + REG_PAGELOCK); |
6baef150 CC |
698 | } |
699 | #endif /* notused */ | |
700 | ||
70265d24 | 701 | static irqreturn_t interrupt_pcmuio(int irq, void *d) |
6baef150 CC |
702 | { |
703 | int asic, got1 = 0; | |
0a85b6f0 | 704 | struct comedi_device *dev = (struct comedi_device *)d; |
6baef150 CC |
705 | |
706 | for (asic = 0; asic < MAX_ASICS; ++asic) { | |
707 | if (irq == devpriv->asics[asic].irq) { | |
708 | unsigned long flags; | |
709 | unsigned triggered = 0; | |
710 | unsigned long iobase = devpriv->asics[asic].iobase; | |
711 | /* it is an interrupt for ASIC #asic */ | |
712 | unsigned char int_pend; | |
713 | ||
0a85b6f0 MT |
714 | spin_lock_irqsave(&devpriv->asics[asic].spinlock, |
715 | flags); | |
6baef150 CC |
716 | |
717 | int_pend = inb(iobase + REG_INT_PENDING) & 0x07; | |
718 | ||
719 | if (int_pend) { | |
720 | int port; | |
721 | for (port = 0; port < INTR_PORTS_PER_ASIC; | |
0a85b6f0 | 722 | ++port) { |
6baef150 CC |
723 | if (int_pend & (0x1 << port)) { |
724 | unsigned char | |
0a85b6f0 | 725 | io_lines_with_edges = 0; |
6baef150 | 726 | switch_page(dev, asic, |
0a85b6f0 | 727 | PAGE_INT_ID); |
6baef150 | 728 | io_lines_with_edges = |
0a85b6f0 | 729 | inb(iobase + |
6baef150 CC |
730 | REG_INT_ID0 + port); |
731 | ||
732 | if (io_lines_with_edges) | |
733 | /* clear pending interrupt */ | |
734 | outb(0, iobase + | |
0a85b6f0 MT |
735 | REG_INT_ID0 + |
736 | port); | |
6baef150 CC |
737 | |
738 | triggered |= | |
0a85b6f0 MT |
739 | io_lines_with_edges << |
740 | port * 8; | |
6baef150 CC |
741 | } |
742 | } | |
743 | ||
744 | ++got1; | |
745 | } | |
746 | ||
0a85b6f0 MT |
747 | spin_unlock_irqrestore(&devpriv->asics[asic].spinlock, |
748 | flags); | |
6baef150 CC |
749 | |
750 | if (triggered) { | |
34c43922 | 751 | struct comedi_subdevice *s; |
6baef150 | 752 | /* TODO here: dispatch io lines to subdevs with commands.. */ |
0a85b6f0 MT |
753 | printk |
754 | ("PCMUIO DEBUG: got edge detect interrupt %d asic %d which_chans: %06x\n", | |
755 | irq, asic, triggered); | |
6baef150 | 756 | for (s = dev->subdevices; |
0a85b6f0 MT |
757 | s < dev->subdevices + dev->n_subdevices; |
758 | ++s) { | |
6baef150 CC |
759 | if (subpriv->intr.asic == asic) { /* this is an interrupt subdev, and it matches this asic! */ |
760 | unsigned long flags; | |
761 | unsigned oldevents; | |
762 | ||
0a85b6f0 MT |
763 | spin_lock_irqsave(&subpriv-> |
764 | intr.spinlock, | |
765 | flags); | |
6baef150 CC |
766 | |
767 | oldevents = s->async->events; | |
768 | ||
769 | if (subpriv->intr.active) { | |
770 | unsigned mytrig = | |
0a85b6f0 MT |
771 | ((triggered >> |
772 | subpriv->intr.asic_chan) | |
773 | & | |
774 | ((0x1 << subpriv-> | |
775 | intr. | |
776 | num_asic_chans) - | |
777 | 1)) << subpriv-> | |
778 | intr.first_chan; | |
779 | if (mytrig & | |
780 | subpriv->intr.enabled_mask) | |
781 | { | |
782 | unsigned int val | |
783 | = 0; | |
6baef150 | 784 | unsigned int n, |
0a85b6f0 | 785 | ch, len; |
6baef150 | 786 | |
0a85b6f0 MT |
787 | len = |
788 | s-> | |
789 | async->cmd.chanlist_len; | |
6baef150 | 790 | for (n = 0; |
0a85b6f0 MT |
791 | n < len; |
792 | n++) { | |
6baef150 CC |
793 | ch = CR_CHAN(s->async->cmd.chanlist[n]); |
794 | if (mytrig & (1U << ch)) { | |
795 | val |= (1U << n); | |
796 | } | |
797 | } | |
798 | /* Write the scan to the buffer. */ | |
0a85b6f0 MT |
799 | if (comedi_buf_put(s->async, ((short *)&val)[0]) |
800 | && | |
801 | comedi_buf_put | |
802 | (s->async, | |
803 | ((short *) | |
804 | &val)[1])) | |
805 | { | |
6baef150 CC |
806 | s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS); |
807 | } else { | |
808 | /* Overflow! Stop acquisition!! */ | |
809 | /* TODO: STOP_ACQUISITION_CALL_HERE!! */ | |
810 | pcmuio_stop_intr | |
0a85b6f0 MT |
811 | (dev, |
812 | s); | |
6baef150 CC |
813 | } |
814 | ||
815 | /* Check for end of acquisition. */ | |
0a85b6f0 | 816 | if (!subpriv->intr.continuous) { |
6baef150 CC |
817 | /* stop_src == TRIG_COUNT */ |
818 | if (subpriv->intr.stop_count > 0) { | |
0a85b6f0 | 819 | subpriv->intr.stop_count--; |
6baef150 CC |
820 | if (subpriv->intr.stop_count == 0) { |
821 | s->async->events |= COMEDI_CB_EOA; | |
822 | /* TODO: STOP_ACQUISITION_CALL_HERE!! */ | |
823 | pcmuio_stop_intr | |
0a85b6f0 MT |
824 | (dev, |
825 | s); | |
6baef150 CC |
826 | } |
827 | } | |
828 | } | |
829 | } | |
830 | } | |
831 | ||
0a85b6f0 MT |
832 | spin_unlock_irqrestore |
833 | (&subpriv->intr.spinlock, | |
834 | flags); | |
6baef150 CC |
835 | |
836 | if (oldevents != | |
0a85b6f0 | 837 | s->async->events) { |
6baef150 CC |
838 | comedi_event(dev, s); |
839 | } | |
840 | ||
841 | } | |
842 | ||
843 | } | |
844 | } | |
845 | ||
846 | } | |
847 | } | |
848 | if (!got1) | |
849 | return IRQ_NONE; /* interrupt from other source */ | |
850 | return IRQ_HANDLED; | |
851 | } | |
852 | ||
0a85b6f0 MT |
853 | static void pcmuio_stop_intr(struct comedi_device *dev, |
854 | struct comedi_subdevice *s) | |
6baef150 CC |
855 | { |
856 | int nports, firstport, asic, port; | |
857 | ||
c3744138 BP |
858 | asic = subpriv->intr.asic; |
859 | if (asic < 0) | |
6baef150 CC |
860 | return; /* not an interrupt subdev */ |
861 | ||
862 | subpriv->intr.enabled_mask = 0; | |
863 | subpriv->intr.active = 0; | |
864 | s->async->inttrig = 0; | |
865 | nports = subpriv->intr.num_asic_chans / CHANS_PER_PORT; | |
866 | firstport = subpriv->intr.asic_chan / CHANS_PER_PORT; | |
867 | switch_page(dev, asic, PAGE_ENAB); | |
868 | for (port = firstport; port < firstport + nports; ++port) { | |
869 | /* disable all intrs for this subdev.. */ | |
870 | outb(0, devpriv->asics[asic].iobase + REG_ENAB0 + port); | |
871 | } | |
872 | } | |
873 | ||
0a85b6f0 MT |
874 | static int pcmuio_start_intr(struct comedi_device *dev, |
875 | struct comedi_subdevice *s) | |
6baef150 CC |
876 | { |
877 | if (!subpriv->intr.continuous && subpriv->intr.stop_count == 0) { | |
878 | /* An empty acquisition! */ | |
879 | s->async->events |= COMEDI_CB_EOA; | |
880 | subpriv->intr.active = 0; | |
881 | return 1; | |
882 | } else { | |
883 | unsigned bits = 0, pol_bits = 0, n; | |
884 | int nports, firstport, asic, port; | |
ea6d0d4c | 885 | struct comedi_cmd *cmd = &s->async->cmd; |
6baef150 | 886 | |
c3744138 BP |
887 | asic = subpriv->intr.asic; |
888 | if (asic < 0) | |
6baef150 CC |
889 | return 1; /* not an interrupt |
890 | subdev */ | |
891 | subpriv->intr.enabled_mask = 0; | |
892 | subpriv->intr.active = 1; | |
893 | nports = subpriv->intr.num_asic_chans / CHANS_PER_PORT; | |
894 | firstport = subpriv->intr.asic_chan / CHANS_PER_PORT; | |
895 | if (cmd->chanlist) { | |
896 | for (n = 0; n < cmd->chanlist_len; n++) { | |
897 | bits |= (1U << CR_CHAN(cmd->chanlist[n])); | |
898 | pol_bits |= (CR_AREF(cmd->chanlist[n]) | |
0a85b6f0 MT |
899 | || CR_RANGE(cmd-> |
900 | chanlist[n]) ? 1U : 0U) | |
901 | << CR_CHAN(cmd->chanlist[n]); | |
6baef150 CC |
902 | } |
903 | } | |
904 | bits &= ((0x1 << subpriv->intr.num_asic_chans) - | |
0a85b6f0 | 905 | 1) << subpriv->intr.first_chan; |
6baef150 CC |
906 | subpriv->intr.enabled_mask = bits; |
907 | ||
908 | switch_page(dev, asic, PAGE_ENAB); | |
909 | for (port = firstport; port < firstport + nports; ++port) { | |
910 | unsigned enab = | |
0a85b6f0 MT |
911 | bits >> (subpriv->intr.first_chan + (port - |
912 | firstport) * | |
913 | 8) & 0xff, pol = | |
914 | pol_bits >> (subpriv->intr.first_chan + | |
915 | (port - firstport) * 8) & 0xff; | |
6baef150 CC |
916 | /* set enab intrs for this subdev.. */ |
917 | outb(enab, | |
0a85b6f0 | 918 | devpriv->asics[asic].iobase + REG_ENAB0 + port); |
6baef150 CC |
919 | switch_page(dev, asic, PAGE_POL); |
920 | outb(pol, | |
0a85b6f0 | 921 | devpriv->asics[asic].iobase + REG_ENAB0 + port); |
6baef150 CC |
922 | } |
923 | } | |
924 | return 0; | |
925 | } | |
926 | ||
da91b269 | 927 | static int pcmuio_cancel(struct comedi_device *dev, struct comedi_subdevice *s) |
6baef150 CC |
928 | { |
929 | unsigned long flags; | |
930 | ||
5f74ea14 | 931 | spin_lock_irqsave(&subpriv->intr.spinlock, flags); |
6baef150 CC |
932 | if (subpriv->intr.active) |
933 | pcmuio_stop_intr(dev, s); | |
5f74ea14 | 934 | spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); |
6baef150 CC |
935 | |
936 | return 0; | |
937 | } | |
938 | ||
939 | /* | |
940 | * Internal trigger function to start acquisition for an 'INTERRUPT' subdevice. | |
941 | */ | |
942 | static int | |
da91b269 | 943 | pcmuio_inttrig_start_intr(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 944 | unsigned int trignum) |
6baef150 CC |
945 | { |
946 | unsigned long flags; | |
947 | int event = 0; | |
948 | ||
949 | if (trignum != 0) | |
950 | return -EINVAL; | |
951 | ||
5f74ea14 | 952 | spin_lock_irqsave(&subpriv->intr.spinlock, flags); |
6baef150 CC |
953 | s->async->inttrig = 0; |
954 | if (subpriv->intr.active) { | |
955 | event = pcmuio_start_intr(dev, s); | |
956 | } | |
5f74ea14 | 957 | spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); |
6baef150 CC |
958 | |
959 | if (event) { | |
960 | comedi_event(dev, s); | |
961 | } | |
962 | ||
963 | return 1; | |
964 | } | |
965 | ||
966 | /* | |
967 | * 'do_cmd' function for an 'INTERRUPT' subdevice. | |
968 | */ | |
da91b269 | 969 | static int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s) |
6baef150 | 970 | { |
ea6d0d4c | 971 | struct comedi_cmd *cmd = &s->async->cmd; |
6baef150 CC |
972 | unsigned long flags; |
973 | int event = 0; | |
974 | ||
5f74ea14 | 975 | spin_lock_irqsave(&subpriv->intr.spinlock, flags); |
6baef150 CC |
976 | subpriv->intr.active = 1; |
977 | ||
978 | /* Set up end of acquisition. */ | |
979 | switch (cmd->stop_src) { | |
980 | case TRIG_COUNT: | |
981 | subpriv->intr.continuous = 0; | |
982 | subpriv->intr.stop_count = cmd->stop_arg; | |
983 | break; | |
984 | default: | |
985 | /* TRIG_NONE */ | |
986 | subpriv->intr.continuous = 1; | |
987 | subpriv->intr.stop_count = 0; | |
988 | break; | |
989 | } | |
990 | ||
991 | /* Set up start of acquisition. */ | |
992 | switch (cmd->start_src) { | |
993 | case TRIG_INT: | |
994 | s->async->inttrig = pcmuio_inttrig_start_intr; | |
995 | break; | |
996 | default: | |
997 | /* TRIG_NOW */ | |
998 | event = pcmuio_start_intr(dev, s); | |
999 | break; | |
1000 | } | |
5f74ea14 | 1001 | spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); |
6baef150 CC |
1002 | |
1003 | if (event) { | |
1004 | comedi_event(dev, s); | |
1005 | } | |
1006 | ||
1007 | return 0; | |
1008 | } | |
1009 | ||
6baef150 | 1010 | static int |
0a85b6f0 MT |
1011 | pcmuio_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, |
1012 | struct comedi_cmd *cmd) | |
6baef150 | 1013 | { |
0b8f754a | 1014 | return comedi_pcm_cmdtest(dev, s, cmd); |
6baef150 CC |
1015 | } |
1016 | ||
1017 | /* | |
1018 | * A convenient macro that defines init_module() and cleanup_module(), | |
1019 | * as necessary. | |
1020 | */ | |
7114a280 AT |
1021 | static int __init driver_init_module(void) |
1022 | { | |
1023 | return comedi_driver_register(&driver); | |
1024 | } | |
1025 | ||
1026 | static void __exit driver_cleanup_module(void) | |
1027 | { | |
1028 | comedi_driver_unregister(&driver); | |
1029 | } | |
1030 | ||
1031 | module_init(driver_init_module); | |
1032 | module_exit(driver_cleanup_module); | |
90f703d3 AT |
1033 | |
1034 | MODULE_AUTHOR("Comedi http://www.comedi.org"); | |
1035 | MODULE_DESCRIPTION("Comedi low-level driver"); | |
1036 | MODULE_LICENSE("GPL"); |