Commit | Line | Data |
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6742c0af | 1 | #define DRIVER_VERSION "v2.2" |
4bf21fa4 BP |
2 | #define DRIVER_AUTHOR "Bernd Porr, BerndPorr@f2s.com" |
3 | #define DRIVER_DESC "Stirling/ITL USB-DUX -- Bernd.Porr@f2s.com" | |
4 | /* | |
5 | comedi/drivers/usbdux.c | |
6 | Copyright (C) 2003-2007 Bernd Porr, Bernd.Porr@f2s.com | |
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 | /* | |
24 | Driver: usbdux | |
25 | Description: University of Stirling USB DAQ & INCITE Technology Limited | |
26 | Devices: [ITL] USB-DUX (usbdux.o) | |
27 | Author: Bernd Porr <BerndPorr@f2s.com> | |
6742c0af BP |
28 | Updated: 8 Dec 2008 |
29 | Status: Stable | |
4bf21fa4 BP |
30 | Configuration options: |
31 | You have to upload firmware with the -i option. The | |
32 | firmware is usually installed under /usr/share/usb or | |
33 | /usr/local/share/usb or /lib/firmware. | |
34 | ||
35 | Connection scheme for the counter at the digital port: | |
36 | 0=/CLK0, 1=UP/DOWN0, 2=RESET0, 4=/CLK1, 5=UP/DOWN1, 6=RESET1. | |
37 | The sampling rate of the counter is approximately 500Hz. | |
38 | ||
39 | Please note that under USB2.0 the length of the channel list determines | |
40 | the max sampling rate. If you sample only one channel you get 8kHz | |
41 | sampling rate. If you sample two channels you get 4kHz and so on. | |
42 | */ | |
43 | /* | |
44 | * I must give credit here to Chris Baugher who | |
45 | * wrote the driver for AT-MIO-16d. I used some parts of this | |
46 | * driver. I also must give credits to David Brownell | |
47 | * who supported me with the USB development. | |
48 | * | |
49 | * Bernd Porr | |
50 | * | |
51 | * | |
52 | * Revision history: | |
53 | * 0.94: D/A output should work now with any channel list combinations | |
54 | * 0.95: .owner commented out for kernel vers below 2.4.19 | |
55 | * sanity checks in ai/ao_cmd | |
4274ea02 GKH |
56 | * 0.96: trying to get it working with 2.6, moved all memory alloc to comedi's |
57 | * attach final USB IDs | |
58 | * moved memory allocation completely to the corresponding comedi | |
59 | * functions firmware upload is by fxload and no longer by comedi (due to | |
60 | * enumeration) | |
4bf21fa4 BP |
61 | * 0.97: USB IDs received, adjusted table |
62 | * 0.98: SMP, locking, memroy alloc: moved all usb memory alloc | |
63 | * to the usb subsystem and moved all comedi related memory | |
64 | * alloc to comedi. | |
65 | * | kernel | registration | usbdux-usb | usbdux-comedi | comedi | | |
66 | * 0.99: USB 2.0: changed protocol to isochronous transfer | |
67 | * IRQ transfer is too buggy and too risky in 2.0 | |
4274ea02 GKH |
68 | * for the high speed ISO transfer is now a working version |
69 | * available | |
4bf21fa4 BP |
70 | * 0.99b: Increased the iso transfer buffer for high sp.to 10 buffers. Some VIA |
71 | * chipsets miss out IRQs. Deeper buffering is needed. | |
4274ea02 GKH |
72 | * 1.00: full USB 2.0 support for the A/D converter. Now: max 8kHz sampling |
73 | * rate. | |
4bf21fa4 BP |
74 | * Firmware vers 1.00 is needed for this. |
75 | * Two 16 bit up/down/reset counter with a sampling rate of 1kHz | |
76 | * And loads of cleaning up, in particular streamlining the | |
77 | * bulk transfers. | |
78 | * 1.1: moved EP4 transfers to EP1 to make space for a PWM output on EP4 | |
79 | * 1.2: added PWM suport via EP4 | |
80 | * 2.0: PWM seems to be stable and is not interfering with the other functions | |
81 | * 2.1: changed PWM API | |
6742c0af | 82 | * 2.2: added firmware kernel request to fix an udev problem |
4bf21fa4 BP |
83 | * |
84 | */ | |
85 | ||
e54fb9c1 GKH |
86 | /* generates loads of debug info */ |
87 | /* #define NOISY_DUX_DEBUGBUG */ | |
4bf21fa4 BP |
88 | |
89 | #include <linux/kernel.h> | |
90 | #include <linux/module.h> | |
91 | #include <linux/init.h> | |
92 | #include <linux/slab.h> | |
93 | #include <linux/input.h> | |
94 | #include <linux/usb.h> | |
95 | #include <linux/smp_lock.h> | |
96 | #include <linux/fcntl.h> | |
97 | #include <linux/compiler.h> | |
6742c0af | 98 | #include <linux/firmware.h> |
4bf21fa4 BP |
99 | |
100 | #include "../comedidev.h" | |
4bf21fa4 BP |
101 | |
102 | #define BOARDNAME "usbdux" | |
103 | ||
e54fb9c1 | 104 | /* timeout for the USB-transfer */ |
4bf21fa4 BP |
105 | #define EZTIMEOUT 30 |
106 | ||
e54fb9c1 | 107 | /* constants for "firmware" upload and download */ |
4bf21fa4 BP |
108 | #define USBDUXSUB_FIRMWARE 0xA0 |
109 | #define VENDOR_DIR_IN 0xC0 | |
110 | #define VENDOR_DIR_OUT 0x40 | |
111 | ||
e54fb9c1 | 112 | /* internal adresses of the 8051 processor */ |
4bf21fa4 BP |
113 | #define USBDUXSUB_CPUCS 0xE600 |
114 | ||
e54fb9c1 GKH |
115 | /* |
116 | * the minor device number, major is 180 only for debugging purposes and to | |
117 | * upload special firmware (programming the eeprom etc) which is not compatible | |
118 | * with the comedi framwork | |
119 | */ | |
4bf21fa4 BP |
120 | #define USBDUXSUB_MINOR 32 |
121 | ||
e54fb9c1 | 122 | /* max lenghth of the transfer-buffer for software upload */ |
4bf21fa4 BP |
123 | #define TB_LEN 0x2000 |
124 | ||
e54fb9c1 | 125 | /* Input endpoint number: ISO/IRQ */ |
4bf21fa4 BP |
126 | #define ISOINEP 6 |
127 | ||
e54fb9c1 | 128 | /* Output endpoint number: ISO/IRQ */ |
4bf21fa4 BP |
129 | #define ISOOUTEP 2 |
130 | ||
e54fb9c1 | 131 | /* This EP sends DUX commands to USBDUX */ |
4bf21fa4 BP |
132 | #define COMMAND_OUT_EP 1 |
133 | ||
e54fb9c1 | 134 | /* This EP receives the DUX commands from USBDUX */ |
4bf21fa4 BP |
135 | #define COMMAND_IN_EP 8 |
136 | ||
e54fb9c1 | 137 | /* Output endpoint for PWM */ |
4bf21fa4 BP |
138 | #define PWM_EP 4 |
139 | ||
e54fb9c1 | 140 | /* 300Hz max frequ under PWM */ |
4bf21fa4 BP |
141 | #define MIN_PWM_PERIOD ((long)(1E9/300)) |
142 | ||
e54fb9c1 | 143 | /* Default PWM frequency */ |
4bf21fa4 BP |
144 | #define PWM_DEFAULT_PERIOD ((long)(1E9/100)) |
145 | ||
e54fb9c1 | 146 | /* Number of channels */ |
4bf21fa4 BP |
147 | #define NUMCHANNELS 8 |
148 | ||
e54fb9c1 | 149 | /* Size of one A/D value */ |
4bf21fa4 BP |
150 | #define SIZEADIN ((sizeof(int16_t))) |
151 | ||
4274ea02 GKH |
152 | /* |
153 | * Size of the input-buffer IN BYTES | |
154 | * Always multiple of 8 for 8 microframes which is needed in the highspeed mode | |
155 | */ | |
4bf21fa4 BP |
156 | #define SIZEINBUF ((8*SIZEADIN)) |
157 | ||
e54fb9c1 | 158 | /* 16 bytes. */ |
4bf21fa4 BP |
159 | #define SIZEINSNBUF 16 |
160 | ||
e54fb9c1 | 161 | /* Number of DA channels */ |
4bf21fa4 BP |
162 | #define NUMOUTCHANNELS 8 |
163 | ||
e54fb9c1 | 164 | /* size of one value for the D/A converter: channel and value */ |
4bf21fa4 BP |
165 | #define SIZEDAOUT ((sizeof(int8_t)+sizeof(int16_t))) |
166 | ||
e54fb9c1 GKH |
167 | /* |
168 | * Size of the output-buffer in bytes | |
169 | * Actually only the first 4 triplets are used but for the | |
170 | * high speed mode we need to pad it to 8 (microframes). | |
171 | */ | |
4bf21fa4 BP |
172 | #define SIZEOUTBUF ((8*SIZEDAOUT)) |
173 | ||
e54fb9c1 GKH |
174 | /* |
175 | * Size of the buffer for the dux commands: just now max size is determined | |
176 | * by the analogue out + command byte + panic bytes... | |
177 | */ | |
4bf21fa4 BP |
178 | #define SIZEOFDUXBUFFER ((8*SIZEDAOUT+2)) |
179 | ||
e54fb9c1 | 180 | /* Number of in-URBs which receive the data: min=2 */ |
4bf21fa4 BP |
181 | #define NUMOFINBUFFERSFULL 5 |
182 | ||
e54fb9c1 | 183 | /* Number of out-URBs which send the data: min=2 */ |
4bf21fa4 BP |
184 | #define NUMOFOUTBUFFERSFULL 5 |
185 | ||
e54fb9c1 GKH |
186 | /* Number of in-URBs which receive the data: min=5 */ |
187 | /* must have more buffers due to buggy USB ctr */ | |
188 | #define NUMOFINBUFFERSHIGH 10 | |
4bf21fa4 | 189 | |
e54fb9c1 GKH |
190 | /* Number of out-URBs which send the data: min=5 */ |
191 | /* must have more buffers due to buggy USB ctr */ | |
192 | #define NUMOFOUTBUFFERSHIGH 10 | |
4bf21fa4 | 193 | |
e54fb9c1 | 194 | /* Total number of usbdux devices */ |
4bf21fa4 BP |
195 | #define NUMUSBDUX 16 |
196 | ||
e54fb9c1 | 197 | /* Analogue in subdevice */ |
4bf21fa4 BP |
198 | #define SUBDEV_AD 0 |
199 | ||
e54fb9c1 | 200 | /* Analogue out subdevice */ |
4bf21fa4 BP |
201 | #define SUBDEV_DA 1 |
202 | ||
e54fb9c1 | 203 | /* Digital I/O */ |
4bf21fa4 BP |
204 | #define SUBDEV_DIO 2 |
205 | ||
e54fb9c1 | 206 | /* counter */ |
4bf21fa4 BP |
207 | #define SUBDEV_COUNTER 3 |
208 | ||
e54fb9c1 | 209 | /* timer aka pwm output */ |
4bf21fa4 BP |
210 | #define SUBDEV_PWM 4 |
211 | ||
e54fb9c1 | 212 | /* number of retries to get the right dux command */ |
4bf21fa4 BP |
213 | #define RETRIES 10 |
214 | ||
e54fb9c1 GKH |
215 | /**************************************************/ |
216 | /* comedi constants */ | |
9ced1de6 | 217 | static const struct comedi_lrange range_usbdux_ai_range = { 4, { |
0a85b6f0 MT |
218 | BIP_RANGE |
219 | (4.096), | |
220 | BIP_RANGE(4.096 | |
221 | / 2), | |
222 | UNI_RANGE | |
223 | (4.096), | |
224 | UNI_RANGE(4.096 | |
225 | / 2) | |
226 | } | |
4bf21fa4 BP |
227 | }; |
228 | ||
9ced1de6 | 229 | static const struct comedi_lrange range_usbdux_ao_range = { 2, { |
0a85b6f0 MT |
230 | BIP_RANGE |
231 | (4.096), | |
232 | UNI_RANGE | |
233 | (4.096), | |
234 | } | |
4bf21fa4 BP |
235 | }; |
236 | ||
237 | /* | |
238 | * private structure of one subdevice | |
239 | */ | |
240 | ||
e54fb9c1 GKH |
241 | /* |
242 | * This is the structure which holds all the data of | |
243 | * this driver one sub device just now: A/D | |
244 | */ | |
cc92fca7 | 245 | struct usbduxsub { |
e54fb9c1 | 246 | /* attached? */ |
4bf21fa4 | 247 | int attached; |
e54fb9c1 | 248 | /* is it associated with a subdevice? */ |
4bf21fa4 | 249 | int probed; |
e54fb9c1 | 250 | /* pointer to the usb-device */ |
4bf21fa4 | 251 | struct usb_device *usbdev; |
e54fb9c1 | 252 | /* actual number of in-buffers */ |
4bf21fa4 | 253 | int numOfInBuffers; |
e54fb9c1 | 254 | /* actual number of out-buffers */ |
4bf21fa4 | 255 | int numOfOutBuffers; |
e54fb9c1 | 256 | /* ISO-transfer handling: buffers */ |
4bf21fa4 BP |
257 | struct urb **urbIn; |
258 | struct urb **urbOut; | |
e54fb9c1 | 259 | /* pwm-transfer handling */ |
4bf21fa4 | 260 | struct urb *urbPwm; |
e54fb9c1 | 261 | /* PWM period */ |
790c5541 | 262 | unsigned int pwmPeriod; |
e54fb9c1 | 263 | /* PWM internal delay for the GPIF in the FX2 */ |
4bf21fa4 | 264 | int8_t pwmDelay; |
e54fb9c1 | 265 | /* size of the PWM buffer which holds the bit pattern */ |
4bf21fa4 | 266 | int sizePwmBuf; |
e54fb9c1 | 267 | /* input buffer for the ISO-transfer */ |
4bf21fa4 | 268 | int16_t *inBuffer; |
e54fb9c1 | 269 | /* input buffer for single insn */ |
4bf21fa4 | 270 | int16_t *insnBuffer; |
e54fb9c1 | 271 | /* output buffer for single DA outputs */ |
4bf21fa4 | 272 | int16_t *outBuffer; |
e54fb9c1 | 273 | /* interface number */ |
4bf21fa4 | 274 | int ifnum; |
e54fb9c1 | 275 | /* interface structure in 2.6 */ |
4bf21fa4 | 276 | struct usb_interface *interface; |
e54fb9c1 | 277 | /* comedi device for the interrupt context */ |
71b5f4f1 | 278 | struct comedi_device *comedidev; |
e54fb9c1 | 279 | /* is it USB_SPEED_HIGH or not? */ |
4bf21fa4 | 280 | short int high_speed; |
e54fb9c1 | 281 | /* asynchronous command is running */ |
4bf21fa4 BP |
282 | short int ai_cmd_running; |
283 | short int ao_cmd_running; | |
e54fb9c1 | 284 | /* pwm is running */ |
4bf21fa4 | 285 | short int pwm_cmd_running; |
e54fb9c1 | 286 | /* continous aquisition */ |
4bf21fa4 BP |
287 | short int ai_continous; |
288 | short int ao_continous; | |
e54fb9c1 | 289 | /* number of samples to aquire */ |
4bf21fa4 BP |
290 | int ai_sample_count; |
291 | int ao_sample_count; | |
e54fb9c1 | 292 | /* time between samples in units of the timer */ |
4bf21fa4 BP |
293 | unsigned int ai_timer; |
294 | unsigned int ao_timer; | |
e54fb9c1 | 295 | /* counter between aquisitions */ |
4bf21fa4 BP |
296 | unsigned int ai_counter; |
297 | unsigned int ao_counter; | |
e54fb9c1 | 298 | /* interval in frames/uframes */ |
4bf21fa4 | 299 | unsigned int ai_interval; |
e54fb9c1 | 300 | /* D/A commands */ |
4bf21fa4 | 301 | int8_t *dac_commands; |
e54fb9c1 | 302 | /* commands */ |
4bf21fa4 BP |
303 | int8_t *dux_commands; |
304 | struct semaphore sem; | |
cc92fca7 | 305 | }; |
4bf21fa4 | 306 | |
e54fb9c1 GKH |
307 | /* |
308 | * The pointer to the private usb-data of the driver is also the private data | |
309 | * for the comedi-device. This has to be global as the usb subsystem needs | |
310 | * global variables. The other reason is that this structure must be there | |
311 | * _before_ any comedi command is issued. The usb subsystem must be initialised | |
312 | * before comedi can access it. | |
313 | */ | |
cc92fca7 | 314 | static struct usbduxsub usbduxsub[NUMUSBDUX]; |
4bf21fa4 BP |
315 | |
316 | static DECLARE_MUTEX(start_stop_sem); | |
317 | ||
e54fb9c1 GKH |
318 | /* |
319 | * Stops the data acquision | |
320 | * It should be safe to call this function from any context | |
321 | */ | |
cc92fca7 | 322 | static int usbduxsub_unlink_InURBs(struct usbduxsub *usbduxsub_tmp) |
4bf21fa4 BP |
323 | { |
324 | int i = 0; | |
4bf21fa4 BP |
325 | int err = 0; |
326 | ||
327 | if (usbduxsub_tmp && usbduxsub_tmp->urbIn) { | |
328 | for (i = 0; i < usbduxsub_tmp->numOfInBuffers; i++) { | |
329 | if (usbduxsub_tmp->urbIn[i]) { | |
e54fb9c1 GKH |
330 | /* We wait here until all transfers have been |
331 | * cancelled. */ | |
4bf21fa4 | 332 | usb_kill_urb(usbduxsub_tmp->urbIn[i]); |
4bf21fa4 | 333 | } |
c0e0c26e GKH |
334 | dev_dbg(&usbduxsub_tmp->interface->dev, |
335 | "comedi: usbdux: unlinked InURB %d, err=%d\n", | |
4bf21fa4 | 336 | i, err); |
4bf21fa4 BP |
337 | } |
338 | } | |
339 | return err; | |
340 | } | |
341 | ||
8fa07567 GKH |
342 | /* |
343 | * This will stop a running acquisition operation | |
344 | * Is called from within this driver from both the | |
345 | * interrupt context and from comedi | |
346 | */ | |
cc92fca7 | 347 | static int usbdux_ai_stop(struct usbduxsub *this_usbduxsub, int do_unlink) |
4bf21fa4 BP |
348 | { |
349 | int ret = 0; | |
350 | ||
351 | if (!this_usbduxsub) { | |
c0e0c26e GKH |
352 | dev_err(&this_usbduxsub->interface->dev, |
353 | "comedi?: usbdux_ai_stop: this_usbduxsub=NULL!\n"); | |
4bf21fa4 BP |
354 | return -EFAULT; |
355 | } | |
c0e0c26e | 356 | dev_dbg(&this_usbduxsub->interface->dev, "comedi: usbdux_ai_stop\n"); |
4bf21fa4 BP |
357 | |
358 | if (do_unlink) { | |
e54fb9c1 | 359 | /* stop aquistion */ |
4bf21fa4 BP |
360 | ret = usbduxsub_unlink_InURBs(this_usbduxsub); |
361 | } | |
362 | ||
363 | this_usbduxsub->ai_cmd_running = 0; | |
364 | ||
365 | return ret; | |
366 | } | |
367 | ||
e54fb9c1 GKH |
368 | /* |
369 | * This will cancel a running acquisition operation. | |
370 | * This is called by comedi but never from inside the driver. | |
371 | */ | |
0a85b6f0 MT |
372 | static int usbdux_ai_cancel(struct comedi_device *dev, |
373 | struct comedi_subdevice *s) | |
4bf21fa4 | 374 | { |
cc92fca7 | 375 | struct usbduxsub *this_usbduxsub; |
4bf21fa4 BP |
376 | int res = 0; |
377 | ||
e54fb9c1 | 378 | /* force unlink of all urbs */ |
4bf21fa4 | 379 | this_usbduxsub = dev->private; |
c0e0c26e | 380 | if (!this_usbduxsub) |
4bf21fa4 | 381 | return -EFAULT; |
c0e0c26e GKH |
382 | |
383 | dev_dbg(&this_usbduxsub->interface->dev, "comedi: usbdux_ai_cancel\n"); | |
384 | ||
e54fb9c1 | 385 | /* prevent other CPUs from submitting new commands just now */ |
4bf21fa4 BP |
386 | down(&this_usbduxsub->sem); |
387 | if (!(this_usbduxsub->probed)) { | |
388 | up(&this_usbduxsub->sem); | |
389 | return -ENODEV; | |
390 | } | |
e54fb9c1 | 391 | /* unlink only if the urb really has been submitted */ |
4bf21fa4 BP |
392 | res = usbdux_ai_stop(this_usbduxsub, this_usbduxsub->ai_cmd_running); |
393 | up(&this_usbduxsub->sem); | |
394 | return res; | |
395 | } | |
396 | ||
e54fb9c1 | 397 | /* analogue IN - interrupt service routine */ |
4bf21fa4 | 398 | static void usbduxsub_ai_IsocIrq(struct urb *urb) |
4bf21fa4 BP |
399 | { |
400 | int i, err, n; | |
cc92fca7 | 401 | struct usbduxsub *this_usbduxsub; |
71b5f4f1 | 402 | struct comedi_device *this_comedidev; |
34c43922 | 403 | struct comedi_subdevice *s; |
4bf21fa4 | 404 | |
e54fb9c1 | 405 | /* the context variable points to the subdevice */ |
4bf21fa4 | 406 | this_comedidev = urb->context; |
cc92fca7 | 407 | /* the private structure of the subdevice is struct usbduxsub */ |
4bf21fa4 | 408 | this_usbduxsub = this_comedidev->private; |
e54fb9c1 | 409 | /* subdevice which is the AD converter */ |
4bf21fa4 BP |
410 | s = this_comedidev->subdevices + SUBDEV_AD; |
411 | ||
e54fb9c1 | 412 | /* first we test if something unusual has just happened */ |
4bf21fa4 BP |
413 | switch (urb->status) { |
414 | case 0: | |
e54fb9c1 | 415 | /* copy the result in the transfer buffer */ |
4bf21fa4 | 416 | memcpy(this_usbduxsub->inBuffer, |
0a85b6f0 | 417 | urb->transfer_buffer, SIZEINBUF); |
4bf21fa4 BP |
418 | break; |
419 | case -EILSEQ: | |
e54fb9c1 GKH |
420 | /* error in the ISOchronous data */ |
421 | /* we don't copy the data into the transfer buffer */ | |
422 | /* and recycle the last data byte */ | |
c0e0c26e GKH |
423 | dev_dbg(&urb->dev->dev, |
424 | "comedi%d: usbdux: CRC error in ISO IN stream.\n", | |
4bf21fa4 | 425 | this_usbduxsub->comedidev->minor); |
4bf21fa4 BP |
426 | |
427 | break; | |
428 | ||
4bf21fa4 BP |
429 | case -ECONNRESET: |
430 | case -ENOENT: | |
431 | case -ESHUTDOWN: | |
432 | case -ECONNABORTED: | |
e54fb9c1 | 433 | /* happens after an unlink command */ |
4bf21fa4 | 434 | if (this_usbduxsub->ai_cmd_running) { |
e54fb9c1 GKH |
435 | /* we are still running a command */ |
436 | /* tell this comedi */ | |
4bf21fa4 BP |
437 | s->async->events |= COMEDI_CB_EOA; |
438 | s->async->events |= COMEDI_CB_ERROR; | |
439 | comedi_event(this_usbduxsub->comedidev, s); | |
e54fb9c1 | 440 | /* stop the transfer w/o unlink */ |
4bf21fa4 BP |
441 | usbdux_ai_stop(this_usbduxsub, 0); |
442 | } | |
443 | return; | |
444 | ||
4bf21fa4 | 445 | default: |
e54fb9c1 GKH |
446 | /* a real error on the bus */ |
447 | /* pass error to comedi if we are really running a command */ | |
4bf21fa4 | 448 | if (this_usbduxsub->ai_cmd_running) { |
c0e0c26e GKH |
449 | dev_err(&urb->dev->dev, |
450 | "Non-zero urb status received in ai intr " | |
451 | "context: %d\n", urb->status); | |
4bf21fa4 BP |
452 | s->async->events |= COMEDI_CB_EOA; |
453 | s->async->events |= COMEDI_CB_ERROR; | |
454 | comedi_event(this_usbduxsub->comedidev, s); | |
e54fb9c1 | 455 | /* don't do an unlink here */ |
4bf21fa4 BP |
456 | usbdux_ai_stop(this_usbduxsub, 0); |
457 | } | |
458 | return; | |
459 | } | |
460 | ||
4274ea02 GKH |
461 | /* |
462 | * at this point we are reasonably sure that nothing dodgy has happened | |
463 | * are we running a command? | |
464 | */ | |
4bf21fa4 | 465 | if (unlikely((!(this_usbduxsub->ai_cmd_running)))) { |
e54fb9c1 GKH |
466 | /* |
467 | * not running a command, do not continue execution if no | |
468 | * asynchronous command is running in particular not resubmit | |
469 | */ | |
4bf21fa4 BP |
470 | return; |
471 | } | |
472 | ||
473 | urb->dev = this_usbduxsub->usbdev; | |
474 | ||
8fa07567 | 475 | /* resubmit the urb */ |
4aa3a823 | 476 | err = usb_submit_urb(urb, GFP_ATOMIC); |
4bf21fa4 | 477 | if (unlikely(err < 0)) { |
c0e0c26e GKH |
478 | dev_err(&urb->dev->dev, |
479 | "comedi_: urb resubmit failed in int-context! err=%d\n", | |
480 | err); | |
8fa07567 | 481 | if (err == -EL2NSYNC) |
c0e0c26e GKH |
482 | dev_err(&urb->dev->dev, |
483 | "buggy USB host controller or bug in IRQ " | |
484 | "handler!\n"); | |
4bf21fa4 BP |
485 | s->async->events |= COMEDI_CB_EOA; |
486 | s->async->events |= COMEDI_CB_ERROR; | |
487 | comedi_event(this_usbduxsub->comedidev, s); | |
8fa07567 | 488 | /* don't do an unlink here */ |
4bf21fa4 BP |
489 | usbdux_ai_stop(this_usbduxsub, 0); |
490 | return; | |
491 | } | |
492 | ||
493 | this_usbduxsub->ai_counter--; | |
8fa07567 | 494 | if (likely(this_usbduxsub->ai_counter > 0)) |
4bf21fa4 | 495 | return; |
8fa07567 | 496 | |
e54fb9c1 | 497 | /* timer zero, transfer measurements to comedi */ |
4bf21fa4 BP |
498 | this_usbduxsub->ai_counter = this_usbduxsub->ai_timer; |
499 | ||
e54fb9c1 | 500 | /* test, if we transmit only a fixed number of samples */ |
4bf21fa4 | 501 | if (!(this_usbduxsub->ai_continous)) { |
e54fb9c1 | 502 | /* not continous, fixed number of samples */ |
4bf21fa4 | 503 | this_usbduxsub->ai_sample_count--; |
e54fb9c1 | 504 | /* all samples received? */ |
4bf21fa4 | 505 | if (this_usbduxsub->ai_sample_count < 0) { |
e54fb9c1 | 506 | /* prevent a resubmit next time */ |
4bf21fa4 | 507 | usbdux_ai_stop(this_usbduxsub, 0); |
e54fb9c1 | 508 | /* say comedi that the acquistion is over */ |
4bf21fa4 BP |
509 | s->async->events |= COMEDI_CB_EOA; |
510 | comedi_event(this_usbduxsub->comedidev, s); | |
511 | return; | |
512 | } | |
513 | } | |
e54fb9c1 | 514 | /* get the data from the USB bus and hand it over to comedi */ |
4bf21fa4 BP |
515 | n = s->async->cmd.chanlist_len; |
516 | for (i = 0; i < n; i++) { | |
e54fb9c1 | 517 | /* transfer data */ |
4bf21fa4 | 518 | if (CR_RANGE(s->async->cmd.chanlist[i]) <= 1) { |
efe8d60a | 519 | err = comedi_buf_put |
0a85b6f0 MT |
520 | (s->async, |
521 | le16_to_cpu(this_usbduxsub->inBuffer[i]) ^ 0x800); | |
4bf21fa4 | 522 | } else { |
efe8d60a | 523 | err = comedi_buf_put |
0a85b6f0 MT |
524 | (s->async, |
525 | le16_to_cpu(this_usbduxsub->inBuffer[i])); | |
efe8d60a BP |
526 | } |
527 | if (unlikely(err == 0)) { | |
528 | /* buffer overflow */ | |
529 | usbdux_ai_stop(this_usbduxsub, 0); | |
530 | return; | |
4bf21fa4 BP |
531 | } |
532 | } | |
e54fb9c1 | 533 | /* tell comedi that data is there */ |
4bf21fa4 BP |
534 | comedi_event(this_usbduxsub->comedidev, s); |
535 | } | |
536 | ||
cc92fca7 | 537 | static int usbduxsub_unlink_OutURBs(struct usbduxsub *usbduxsub_tmp) |
4bf21fa4 BP |
538 | { |
539 | int i = 0; | |
4bf21fa4 BP |
540 | int err = 0; |
541 | ||
542 | if (usbduxsub_tmp && usbduxsub_tmp->urbOut) { | |
543 | for (i = 0; i < usbduxsub_tmp->numOfOutBuffers; i++) { | |
8fa07567 | 544 | if (usbduxsub_tmp->urbOut[i]) |
4bf21fa4 | 545 | usb_kill_urb(usbduxsub_tmp->urbOut[i]); |
8fa07567 | 546 | |
c0e0c26e GKH |
547 | dev_dbg(&usbduxsub_tmp->interface->dev, |
548 | "comedi: usbdux: unlinked OutURB %d: res=%d\n", | |
4bf21fa4 | 549 | i, err); |
4bf21fa4 BP |
550 | } |
551 | } | |
552 | return err; | |
553 | } | |
554 | ||
555 | /* This will cancel a running acquisition operation | |
556 | * in any context. | |
557 | */ | |
cc92fca7 | 558 | static int usbdux_ao_stop(struct usbduxsub *this_usbduxsub, int do_unlink) |
4bf21fa4 BP |
559 | { |
560 | int ret = 0; | |
561 | ||
c0e0c26e | 562 | if (!this_usbduxsub) |
4bf21fa4 | 563 | return -EFAULT; |
c0e0c26e GKH |
564 | dev_dbg(&this_usbduxsub->interface->dev, "comedi: usbdux_ao_cancel\n"); |
565 | ||
8fa07567 | 566 | if (do_unlink) |
4bf21fa4 | 567 | ret = usbduxsub_unlink_OutURBs(this_usbduxsub); |
4bf21fa4 BP |
568 | |
569 | this_usbduxsub->ao_cmd_running = 0; | |
570 | ||
571 | return ret; | |
572 | } | |
573 | ||
8fa07567 | 574 | /* force unlink, is called by comedi */ |
0a85b6f0 MT |
575 | static int usbdux_ao_cancel(struct comedi_device *dev, |
576 | struct comedi_subdevice *s) | |
4bf21fa4 | 577 | { |
cc92fca7 | 578 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 BP |
579 | int res = 0; |
580 | ||
c0e0c26e | 581 | if (!this_usbduxsub) |
4bf21fa4 | 582 | return -EFAULT; |
c0e0c26e | 583 | |
e54fb9c1 | 584 | /* prevent other CPUs from submitting a command just now */ |
4bf21fa4 BP |
585 | down(&this_usbduxsub->sem); |
586 | if (!(this_usbduxsub->probed)) { | |
587 | up(&this_usbduxsub->sem); | |
588 | return -ENODEV; | |
589 | } | |
e54fb9c1 | 590 | /* unlink only if it is really running */ |
4bf21fa4 BP |
591 | res = usbdux_ao_stop(this_usbduxsub, this_usbduxsub->ao_cmd_running); |
592 | up(&this_usbduxsub->sem); | |
593 | return res; | |
594 | } | |
595 | ||
4bf21fa4 BP |
596 | static void usbduxsub_ao_IsocIrq(struct urb *urb) |
597 | { | |
4bf21fa4 BP |
598 | int i, ret; |
599 | int8_t *datap; | |
cc92fca7 | 600 | struct usbduxsub *this_usbduxsub; |
71b5f4f1 | 601 | struct comedi_device *this_comedidev; |
34c43922 | 602 | struct comedi_subdevice *s; |
4bf21fa4 | 603 | |
e54fb9c1 | 604 | /* the context variable points to the subdevice */ |
4bf21fa4 | 605 | this_comedidev = urb->context; |
cc92fca7 | 606 | /* the private structure of the subdevice is struct usbduxsub */ |
4bf21fa4 | 607 | this_usbduxsub = this_comedidev->private; |
4bf21fa4 BP |
608 | |
609 | s = this_comedidev->subdevices + SUBDEV_DA; | |
610 | ||
611 | switch (urb->status) { | |
612 | case 0: | |
613 | /* success */ | |
614 | break; | |
615 | ||
4bf21fa4 BP |
616 | case -ECONNRESET: |
617 | case -ENOENT: | |
618 | case -ESHUTDOWN: | |
619 | case -ECONNABORTED: | |
e54fb9c1 GKH |
620 | /* after an unlink command, unplug, ... etc */ |
621 | /* no unlink needed here. Already shutting down. */ | |
4bf21fa4 BP |
622 | if (this_usbduxsub->ao_cmd_running) { |
623 | s->async->events |= COMEDI_CB_EOA; | |
624 | comedi_event(this_usbduxsub->comedidev, s); | |
625 | usbdux_ao_stop(this_usbduxsub, 0); | |
626 | } | |
627 | return; | |
628 | ||
4bf21fa4 | 629 | default: |
e54fb9c1 | 630 | /* a real error */ |
4bf21fa4 | 631 | if (this_usbduxsub->ao_cmd_running) { |
c0e0c26e GKH |
632 | dev_err(&urb->dev->dev, |
633 | "comedi_: Non-zero urb status received in ao " | |
634 | "intr context: %d\n", urb->status); | |
4bf21fa4 BP |
635 | s->async->events |= COMEDI_CB_ERROR; |
636 | s->async->events |= COMEDI_CB_EOA; | |
637 | comedi_event(this_usbduxsub->comedidev, s); | |
e54fb9c1 | 638 | /* we do an unlink if we are in the high speed mode */ |
4bf21fa4 BP |
639 | usbdux_ao_stop(this_usbduxsub, 0); |
640 | } | |
641 | return; | |
642 | } | |
643 | ||
e54fb9c1 | 644 | /* are we actually running? */ |
8fa07567 | 645 | if (!(this_usbduxsub->ao_cmd_running)) |
4bf21fa4 | 646 | return; |
8fa07567 | 647 | |
e54fb9c1 | 648 | /* normal operation: executing a command in this subdevice */ |
4bf21fa4 BP |
649 | this_usbduxsub->ao_counter--; |
650 | if (this_usbduxsub->ao_counter <= 0) { | |
e54fb9c1 | 651 | /* timer zero */ |
4bf21fa4 BP |
652 | this_usbduxsub->ao_counter = this_usbduxsub->ao_timer; |
653 | ||
e54fb9c1 | 654 | /* handle non continous aquisition */ |
4bf21fa4 | 655 | if (!(this_usbduxsub->ao_continous)) { |
e54fb9c1 | 656 | /* fixed number of samples */ |
4bf21fa4 BP |
657 | this_usbduxsub->ao_sample_count--; |
658 | if (this_usbduxsub->ao_sample_count < 0) { | |
e54fb9c1 | 659 | /* all samples transmitted */ |
4bf21fa4 BP |
660 | usbdux_ao_stop(this_usbduxsub, 0); |
661 | s->async->events |= COMEDI_CB_EOA; | |
662 | comedi_event(this_usbduxsub->comedidev, s); | |
e54fb9c1 | 663 | /* no resubmit of the urb */ |
4bf21fa4 BP |
664 | return; |
665 | } | |
666 | } | |
e54fb9c1 | 667 | /* transmit data to the USB bus */ |
4bf21fa4 | 668 | ((uint8_t *) (urb->transfer_buffer))[0] = |
0a85b6f0 | 669 | s->async->cmd.chanlist_len; |
4bf21fa4 | 670 | for (i = 0; i < s->async->cmd.chanlist_len; i++) { |
790c5541 | 671 | short temp; |
8fa07567 | 672 | if (i >= NUMOUTCHANNELS) |
4bf21fa4 | 673 | break; |
8fa07567 | 674 | |
e54fb9c1 | 675 | /* pointer to the DA */ |
4274ea02 | 676 | datap = |
0a85b6f0 | 677 | (&(((int8_t *) urb->transfer_buffer)[i * 3 + 1])); |
e54fb9c1 | 678 | /* get the data from comedi */ |
4bf21fa4 BP |
679 | ret = comedi_buf_get(s->async, &temp); |
680 | datap[0] = temp; | |
681 | datap[1] = temp >> 8; | |
682 | datap[2] = this_usbduxsub->dac_commands[i]; | |
e54fb9c1 GKH |
683 | /* printk("data[0]=%x, data[1]=%x, data[2]=%x\n", */ |
684 | /* datap[0],datap[1],datap[2]); */ | |
4bf21fa4 | 685 | if (ret < 0) { |
c0e0c26e GKH |
686 | dev_err(&urb->dev->dev, |
687 | "comedi: buffer underflow\n"); | |
4bf21fa4 BP |
688 | s->async->events |= COMEDI_CB_EOA; |
689 | s->async->events |= COMEDI_CB_OVERFLOW; | |
690 | } | |
e54fb9c1 | 691 | /* transmit data to comedi */ |
4bf21fa4 BP |
692 | s->async->events |= COMEDI_CB_BLOCK; |
693 | comedi_event(this_usbduxsub->comedidev, s); | |
694 | } | |
695 | } | |
696 | urb->transfer_buffer_length = SIZEOUTBUF; | |
697 | urb->dev = this_usbduxsub->usbdev; | |
698 | urb->status = 0; | |
699 | if (this_usbduxsub->ao_cmd_running) { | |
700 | if (this_usbduxsub->high_speed) { | |
e54fb9c1 | 701 | /* uframes */ |
4bf21fa4 BP |
702 | urb->interval = 8; |
703 | } else { | |
e54fb9c1 | 704 | /* frames */ |
4bf21fa4 BP |
705 | urb->interval = 1; |
706 | } | |
707 | urb->number_of_packets = 1; | |
708 | urb->iso_frame_desc[0].offset = 0; | |
709 | urb->iso_frame_desc[0].length = SIZEOUTBUF; | |
710 | urb->iso_frame_desc[0].status = 0; | |
4aa3a823 | 711 | ret = usb_submit_urb(urb, GFP_ATOMIC); |
4274ea02 | 712 | if (ret < 0) { |
c0e0c26e GKH |
713 | dev_err(&urb->dev->dev, |
714 | "comedi_: ao urb resubm failed in int-cont. " | |
715 | "ret=%d", ret); | |
8fa07567 | 716 | if (ret == EL2NSYNC) |
c0e0c26e GKH |
717 | dev_err(&urb->dev->dev, |
718 | "buggy USB host controller or bug in " | |
719 | "IRQ handling!\n"); | |
8fa07567 | 720 | |
4bf21fa4 BP |
721 | s->async->events |= COMEDI_CB_EOA; |
722 | s->async->events |= COMEDI_CB_ERROR; | |
723 | comedi_event(this_usbduxsub->comedidev, s); | |
e54fb9c1 | 724 | /* don't do an unlink here */ |
4bf21fa4 BP |
725 | usbdux_ao_stop(this_usbduxsub, 0); |
726 | } | |
727 | } | |
728 | } | |
729 | ||
cc92fca7 | 730 | static int usbduxsub_start(struct usbduxsub *usbduxsub) |
4bf21fa4 BP |
731 | { |
732 | int errcode = 0; | |
733 | uint8_t local_transfer_buffer[16]; | |
734 | ||
6742c0af BP |
735 | /* 7f92 to zero */ |
736 | local_transfer_buffer[0] = 0; | |
737 | errcode = usb_control_msg(usbduxsub->usbdev, | |
738 | /* create a pipe for a control transfer */ | |
739 | usb_sndctrlpipe(usbduxsub->usbdev, 0), | |
740 | /* bRequest, "Firmware" */ | |
741 | USBDUXSUB_FIRMWARE, | |
742 | /* bmRequestType */ | |
743 | VENDOR_DIR_OUT, | |
744 | /* Value */ | |
745 | USBDUXSUB_CPUCS, | |
746 | /* Index */ | |
747 | 0x0000, | |
748 | /* address of the transfer buffer */ | |
749 | local_transfer_buffer, | |
750 | /* Length */ | |
751 | 1, | |
752 | /* Timeout */ | |
753 | EZTIMEOUT); | |
754 | if (errcode < 0) { | |
755 | dev_err(&usbduxsub->interface->dev, | |
756 | "comedi_: control msg failed (start)\n"); | |
757 | return errcode; | |
4bf21fa4 BP |
758 | } |
759 | return 0; | |
760 | } | |
761 | ||
cc92fca7 | 762 | static int usbduxsub_stop(struct usbduxsub *usbduxsub) |
4bf21fa4 BP |
763 | { |
764 | int errcode = 0; | |
765 | ||
766 | uint8_t local_transfer_buffer[16]; | |
6742c0af BP |
767 | |
768 | /* 7f92 to one */ | |
769 | local_transfer_buffer[0] = 1; | |
770 | errcode = usb_control_msg(usbduxsub->usbdev, | |
771 | usb_sndctrlpipe(usbduxsub->usbdev, 0), | |
772 | /* bRequest, "Firmware" */ | |
773 | USBDUXSUB_FIRMWARE, | |
774 | /* bmRequestType */ | |
775 | VENDOR_DIR_OUT, | |
776 | /* Value */ | |
777 | USBDUXSUB_CPUCS, | |
778 | /* Index */ | |
779 | 0x0000, local_transfer_buffer, | |
780 | /* Length */ | |
781 | 1, | |
782 | /* Timeout */ | |
783 | EZTIMEOUT); | |
784 | if (errcode < 0) { | |
785 | dev_err(&usbduxsub->interface->dev, | |
786 | "comedi_: control msg failed (stop)\n"); | |
787 | return errcode; | |
4bf21fa4 BP |
788 | } |
789 | return 0; | |
790 | } | |
791 | ||
cc92fca7 | 792 | static int usbduxsub_upload(struct usbduxsub *usbduxsub, |
0a85b6f0 | 793 | uint8_t * local_transfer_buffer, |
8fa07567 | 794 | unsigned int startAddr, unsigned int len) |
4bf21fa4 BP |
795 | { |
796 | int errcode; | |
797 | ||
6742c0af | 798 | errcode = usb_control_msg(usbduxsub->usbdev, |
0a85b6f0 MT |
799 | usb_sndctrlpipe(usbduxsub->usbdev, 0), |
800 | /* brequest, firmware */ | |
801 | USBDUXSUB_FIRMWARE, | |
802 | /* bmRequestType */ | |
803 | VENDOR_DIR_OUT, | |
804 | /* value */ | |
805 | startAddr, | |
806 | /* index */ | |
807 | 0x0000, | |
808 | /* our local safe buffer */ | |
809 | local_transfer_buffer, | |
810 | /* length */ | |
811 | len, | |
812 | /* timeout */ | |
813 | EZTIMEOUT); | |
814 | dev_dbg(&usbduxsub->interface->dev, "comedi_: result=%d\n", errcode); | |
6742c0af | 815 | if (errcode < 0) { |
0a85b6f0 | 816 | dev_err(&usbduxsub->interface->dev, "comedi_: upload failed\n"); |
6742c0af | 817 | return errcode; |
4bf21fa4 BP |
818 | } |
819 | return 0; | |
820 | } | |
821 | ||
81874ff7 BP |
822 | #define FIRMWARE_MAX_LEN 0x2000 |
823 | ||
824 | static int firmwareUpload(struct usbduxsub *usbduxsub, | |
0a85b6f0 | 825 | const u8 * firmwareBinary, int sizeFirmware) |
4bf21fa4 BP |
826 | { |
827 | int ret; | |
81874ff7 | 828 | uint8_t *fwBuf; |
4bf21fa4 | 829 | |
4274ea02 | 830 | if (!firmwareBinary) |
4bf21fa4 | 831 | return 0; |
4274ea02 | 832 | |
0a85b6f0 | 833 | if (sizeFirmware > FIRMWARE_MAX_LEN) { |
81874ff7 BP |
834 | dev_err(&usbduxsub->interface->dev, |
835 | "comedi_: usbdux firmware binary it too large for FX2.\n"); | |
836 | return -ENOMEM; | |
837 | } | |
838 | ||
839 | /* we generate a local buffer for the firmware */ | |
840 | fwBuf = kzalloc(sizeFirmware, GFP_KERNEL); | |
841 | if (!fwBuf) { | |
842 | dev_err(&usbduxsub->interface->dev, | |
843 | "comedi_: mem alloc for firmware failed\n"); | |
844 | return -ENOMEM; | |
845 | } | |
0a85b6f0 | 846 | memcpy(fwBuf, firmwareBinary, sizeFirmware); |
81874ff7 | 847 | |
4bf21fa4 BP |
848 | ret = usbduxsub_stop(usbduxsub); |
849 | if (ret < 0) { | |
c0e0c26e GKH |
850 | dev_err(&usbduxsub->interface->dev, |
851 | "comedi_: can not stop firmware\n"); | |
81874ff7 | 852 | kfree(fwBuf); |
4bf21fa4 BP |
853 | return ret; |
854 | } | |
81874ff7 BP |
855 | |
856 | ret = usbduxsub_upload(usbduxsub, fwBuf, 0, sizeFirmware); | |
4bf21fa4 | 857 | if (ret < 0) { |
c0e0c26e GKH |
858 | dev_err(&usbduxsub->interface->dev, |
859 | "comedi_: firmware upload failed\n"); | |
81874ff7 | 860 | kfree(fwBuf); |
4bf21fa4 BP |
861 | return ret; |
862 | } | |
863 | ret = usbduxsub_start(usbduxsub); | |
864 | if (ret < 0) { | |
c0e0c26e GKH |
865 | dev_err(&usbduxsub->interface->dev, |
866 | "comedi_: can not start firmware\n"); | |
81874ff7 | 867 | kfree(fwBuf); |
4bf21fa4 BP |
868 | return ret; |
869 | } | |
81874ff7 | 870 | kfree(fwBuf); |
4bf21fa4 BP |
871 | return 0; |
872 | } | |
873 | ||
cc92fca7 | 874 | static int usbduxsub_submit_InURBs(struct usbduxsub *usbduxsub) |
4bf21fa4 BP |
875 | { |
876 | int i, errFlag; | |
877 | ||
8fa07567 | 878 | if (!usbduxsub) |
4bf21fa4 | 879 | return -EFAULT; |
8fa07567 | 880 | |
4bf21fa4 BP |
881 | /* Submit all URBs and start the transfer on the bus */ |
882 | for (i = 0; i < usbduxsub->numOfInBuffers; i++) { | |
8fa07567 | 883 | /* in case of a resubmission after an unlink... */ |
4bf21fa4 BP |
884 | usbduxsub->urbIn[i]->interval = usbduxsub->ai_interval; |
885 | usbduxsub->urbIn[i]->context = usbduxsub->comedidev; | |
886 | usbduxsub->urbIn[i]->dev = usbduxsub->usbdev; | |
887 | usbduxsub->urbIn[i]->status = 0; | |
888 | usbduxsub->urbIn[i]->transfer_flags = URB_ISO_ASAP; | |
c0e0c26e GKH |
889 | dev_dbg(&usbduxsub->interface->dev, |
890 | "comedi%d: submitting in-urb[%d]: %p,%p intv=%d\n", | |
891 | usbduxsub->comedidev->minor, i, | |
892 | (usbduxsub->urbIn[i]->context), | |
893 | (usbduxsub->urbIn[i]->dev), | |
894 | (usbduxsub->urbIn[i]->interval)); | |
4aa3a823 | 895 | errFlag = usb_submit_urb(usbduxsub->urbIn[i], GFP_ATOMIC); |
4bf21fa4 | 896 | if (errFlag) { |
c0e0c26e | 897 | dev_err(&usbduxsub->interface->dev, |
4aa3a823 | 898 | "comedi_: ai: usb_submit_urb(%d) error %d\n", |
c0e0c26e | 899 | i, errFlag); |
4bf21fa4 BP |
900 | return errFlag; |
901 | } | |
902 | } | |
903 | return 0; | |
904 | } | |
905 | ||
cc92fca7 | 906 | static int usbduxsub_submit_OutURBs(struct usbduxsub *usbduxsub) |
4bf21fa4 BP |
907 | { |
908 | int i, errFlag; | |
909 | ||
4274ea02 | 910 | if (!usbduxsub) |
4bf21fa4 | 911 | return -EFAULT; |
4274ea02 | 912 | |
4bf21fa4 | 913 | for (i = 0; i < usbduxsub->numOfOutBuffers; i++) { |
c0e0c26e GKH |
914 | dev_dbg(&usbduxsub->interface->dev, |
915 | "comedi_: submitting out-urb[%d]\n", i); | |
e54fb9c1 | 916 | /* in case of a resubmission after an unlink... */ |
4bf21fa4 BP |
917 | usbduxsub->urbOut[i]->context = usbduxsub->comedidev; |
918 | usbduxsub->urbOut[i]->dev = usbduxsub->usbdev; | |
919 | usbduxsub->urbOut[i]->status = 0; | |
920 | usbduxsub->urbOut[i]->transfer_flags = URB_ISO_ASAP; | |
4aa3a823 | 921 | errFlag = usb_submit_urb(usbduxsub->urbOut[i], GFP_ATOMIC); |
4bf21fa4 | 922 | if (errFlag) { |
c0e0c26e | 923 | dev_err(&usbduxsub->interface->dev, |
4aa3a823 | 924 | "comedi_: ao: usb_submit_urb(%d) error %d\n", |
c0e0c26e | 925 | i, errFlag); |
4bf21fa4 BP |
926 | return errFlag; |
927 | } | |
928 | } | |
929 | return 0; | |
930 | } | |
931 | ||
0a85b6f0 MT |
932 | static int usbdux_ai_cmdtest(struct comedi_device *dev, |
933 | struct comedi_subdevice *s, struct comedi_cmd *cmd) | |
4bf21fa4 BP |
934 | { |
935 | int err = 0, tmp, i; | |
936 | unsigned int tmpTimer; | |
cc92fca7 | 937 | struct usbduxsub *this_usbduxsub = dev->private; |
4274ea02 GKH |
938 | |
939 | if (!(this_usbduxsub->probed)) | |
4bf21fa4 | 940 | return -ENODEV; |
4274ea02 | 941 | |
c0e0c26e GKH |
942 | dev_dbg(&this_usbduxsub->interface->dev, |
943 | "comedi%d: usbdux_ai_cmdtest\n", dev->minor); | |
944 | ||
4bf21fa4 | 945 | /* make sure triggers are valid */ |
e54fb9c1 | 946 | /* Only immediate triggers are allowed */ |
4bf21fa4 BP |
947 | tmp = cmd->start_src; |
948 | cmd->start_src &= TRIG_NOW | TRIG_INT; | |
949 | if (!cmd->start_src || tmp != cmd->start_src) | |
950 | err++; | |
951 | ||
e54fb9c1 | 952 | /* trigger should happen timed */ |
4bf21fa4 | 953 | tmp = cmd->scan_begin_src; |
e54fb9c1 | 954 | /* start a new _scan_ with a timer */ |
4bf21fa4 BP |
955 | cmd->scan_begin_src &= TRIG_TIMER; |
956 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
957 | err++; | |
958 | ||
e54fb9c1 | 959 | /* scanning is continous */ |
4bf21fa4 BP |
960 | tmp = cmd->convert_src; |
961 | cmd->convert_src &= TRIG_NOW; | |
962 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
963 | err++; | |
964 | ||
e54fb9c1 | 965 | /* issue a trigger when scan is finished and start a new scan */ |
4bf21fa4 BP |
966 | tmp = cmd->scan_end_src; |
967 | cmd->scan_end_src &= TRIG_COUNT; | |
968 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
969 | err++; | |
970 | ||
e54fb9c1 | 971 | /* trigger at the end of count events or not, stop condition or not */ |
4bf21fa4 BP |
972 | tmp = cmd->stop_src; |
973 | cmd->stop_src &= TRIG_COUNT | TRIG_NONE; | |
974 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
975 | err++; | |
976 | ||
977 | if (err) | |
978 | return 1; | |
979 | ||
4274ea02 GKH |
980 | /* |
981 | * step 2: make sure trigger sources are unique and mutually compatible | |
828684f9 | 982 | * note that mutual compatibility is not an issue here |
4274ea02 | 983 | */ |
4bf21fa4 | 984 | if (cmd->scan_begin_src != TRIG_FOLLOW && |
0a85b6f0 MT |
985 | cmd->scan_begin_src != TRIG_EXT && |
986 | cmd->scan_begin_src != TRIG_TIMER) | |
4bf21fa4 BP |
987 | err++; |
988 | if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE) | |
989 | err++; | |
990 | ||
991 | if (err) | |
992 | return 2; | |
993 | ||
994 | /* step 3: make sure arguments are trivially compatible */ | |
4bf21fa4 BP |
995 | if (cmd->start_arg != 0) { |
996 | cmd->start_arg = 0; | |
997 | err++; | |
998 | } | |
999 | ||
1000 | if (cmd->scan_begin_src == TRIG_FOLLOW) { | |
1001 | /* internal trigger */ | |
1002 | if (cmd->scan_begin_arg != 0) { | |
1003 | cmd->scan_begin_arg = 0; | |
1004 | err++; | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
1009 | if (this_usbduxsub->high_speed) { | |
e54fb9c1 GKH |
1010 | /* |
1011 | * In high speed mode microframes are possible. | |
1012 | * However, during one microframe we can roughly | |
1013 | * sample one channel. Thus, the more channels | |
1014 | * are in the channel list the more time we need. | |
1015 | */ | |
4bf21fa4 | 1016 | i = 1; |
e54fb9c1 | 1017 | /* find a power of 2 for the number of channels */ |
4274ea02 | 1018 | while (i < (cmd->chanlist_len)) |
4bf21fa4 | 1019 | i = i * 2; |
4274ea02 | 1020 | |
4bf21fa4 BP |
1021 | if (cmd->scan_begin_arg < (1000000 / 8 * i)) { |
1022 | cmd->scan_begin_arg = 1000000 / 8 * i; | |
1023 | err++; | |
1024 | } | |
e54fb9c1 GKH |
1025 | /* now calc the real sampling rate with all the |
1026 | * rounding errors */ | |
4bf21fa4 | 1027 | tmpTimer = |
0a85b6f0 MT |
1028 | ((unsigned int)(cmd->scan_begin_arg / 125000)) * |
1029 | 125000; | |
4bf21fa4 BP |
1030 | if (cmd->scan_begin_arg != tmpTimer) { |
1031 | cmd->scan_begin_arg = tmpTimer; | |
1032 | err++; | |
1033 | } | |
e54fb9c1 GKH |
1034 | } else { |
1035 | /* full speed */ | |
1036 | /* 1kHz scans every USB frame */ | |
4bf21fa4 BP |
1037 | if (cmd->scan_begin_arg < 1000000) { |
1038 | cmd->scan_begin_arg = 1000000; | |
1039 | err++; | |
1040 | } | |
4274ea02 GKH |
1041 | /* |
1042 | * calc the real sampling rate with the rounding errors | |
1043 | */ | |
1044 | tmpTimer = ((unsigned int)(cmd->scan_begin_arg / | |
0a85b6f0 | 1045 | 1000000)) * 1000000; |
4bf21fa4 BP |
1046 | if (cmd->scan_begin_arg != tmpTimer) { |
1047 | cmd->scan_begin_arg = tmpTimer; | |
1048 | err++; | |
1049 | } | |
1050 | } | |
1051 | } | |
e54fb9c1 | 1052 | /* the same argument */ |
4bf21fa4 BP |
1053 | if (cmd->scan_end_arg != cmd->chanlist_len) { |
1054 | cmd->scan_end_arg = cmd->chanlist_len; | |
1055 | err++; | |
1056 | } | |
1057 | ||
1058 | if (cmd->stop_src == TRIG_COUNT) { | |
1059 | /* any count is allowed */ | |
1060 | } else { | |
1061 | /* TRIG_NONE */ | |
1062 | if (cmd->stop_arg != 0) { | |
1063 | cmd->stop_arg = 0; | |
1064 | err++; | |
1065 | } | |
1066 | } | |
1067 | ||
1068 | if (err) | |
1069 | return 3; | |
1070 | ||
1071 | return 0; | |
1072 | } | |
1073 | ||
e54fb9c1 GKH |
1074 | /* |
1075 | * creates the ADC command for the MAX1271 | |
1076 | * range is the range value from comedi | |
1077 | */ | |
4bf21fa4 BP |
1078 | static int8_t create_adc_command(unsigned int chan, int range) |
1079 | { | |
1080 | int8_t p = (range <= 1); | |
1081 | int8_t r = ((range % 2) == 0); | |
1082 | return (chan << 4) | ((p == 1) << 2) | ((r == 1) << 3); | |
1083 | } | |
1084 | ||
e54fb9c1 | 1085 | /* bulk transfers to usbdux */ |
4bf21fa4 BP |
1086 | |
1087 | #define SENDADCOMMANDS 0 | |
1088 | #define SENDDACOMMANDS 1 | |
1089 | #define SENDDIOCONFIGCOMMAND 2 | |
1090 | #define SENDDIOBITSCOMMAND 3 | |
1091 | #define SENDSINGLEAD 4 | |
1092 | #define READCOUNTERCOMMAND 5 | |
1093 | #define WRITECOUNTERCOMMAND 6 | |
1094 | #define SENDPWMON 7 | |
1095 | #define SENDPWMOFF 8 | |
1096 | ||
cc92fca7 | 1097 | static int send_dux_commands(struct usbduxsub *this_usbduxsub, int cmd_type) |
4bf21fa4 BP |
1098 | { |
1099 | int result, nsent; | |
1100 | ||
1101 | this_usbduxsub->dux_commands[0] = cmd_type; | |
1102 | #ifdef NOISY_DUX_DEBUGBUG | |
c0e0c26e | 1103 | printk(KERN_DEBUG "comedi%d: usbdux: dux_commands: ", |
0a85b6f0 | 1104 | this_usbduxsub->comedidev->minor); |
4274ea02 | 1105 | for (result = 0; result < SIZEOFDUXBUFFER; result++) |
4bf21fa4 | 1106 | printk(" %02x", this_usbduxsub->dux_commands[result]); |
4bf21fa4 BP |
1107 | printk("\n"); |
1108 | #endif | |
4aa3a823 GKH |
1109 | result = usb_bulk_msg(this_usbduxsub->usbdev, |
1110 | usb_sndbulkpipe(this_usbduxsub->usbdev, | |
1111 | COMMAND_OUT_EP), | |
1112 | this_usbduxsub->dux_commands, SIZEOFDUXBUFFER, | |
1113 | &nsent, 10); | |
8fa07567 | 1114 | if (result < 0) |
c0e0c26e GKH |
1115 | dev_err(&this_usbduxsub->interface->dev, "comedi%d: " |
1116 | "could not transmit dux_command to the usb-device, " | |
1117 | "err=%d\n", this_usbduxsub->comedidev->minor, result); | |
8fa07567 | 1118 | |
4bf21fa4 BP |
1119 | return result; |
1120 | } | |
1121 | ||
cc92fca7 | 1122 | static int receive_dux_commands(struct usbduxsub *this_usbduxsub, int command) |
4bf21fa4 BP |
1123 | { |
1124 | int result = (-EFAULT); | |
1125 | int nrec; | |
1126 | int i; | |
1127 | ||
1128 | for (i = 0; i < RETRIES; i++) { | |
4aa3a823 GKH |
1129 | result = usb_bulk_msg(this_usbduxsub->usbdev, |
1130 | usb_rcvbulkpipe(this_usbduxsub->usbdev, | |
1131 | COMMAND_IN_EP), | |
1132 | this_usbduxsub->insnBuffer, SIZEINSNBUF, | |
1133 | &nrec, 1); | |
4bf21fa4 | 1134 | if (result < 0) { |
c0e0c26e GKH |
1135 | dev_err(&this_usbduxsub->interface->dev, "comedi%d: " |
1136 | "insn: USB error %d while receiving DUX command" | |
1137 | "\n", this_usbduxsub->comedidev->minor, result); | |
4bf21fa4 BP |
1138 | return result; |
1139 | } | |
4274ea02 | 1140 | if (le16_to_cpu(this_usbduxsub->insnBuffer[0]) == command) |
4bf21fa4 | 1141 | return result; |
4bf21fa4 | 1142 | } |
4274ea02 GKH |
1143 | /* this is only reached if the data has been requested a couple of |
1144 | * times */ | |
c0e0c26e GKH |
1145 | dev_err(&this_usbduxsub->interface->dev, "comedi%d: insn: " |
1146 | "wrong data returned from firmware: want cmd %d, got cmd %d.\n", | |
1147 | this_usbduxsub->comedidev->minor, command, | |
1148 | le16_to_cpu(this_usbduxsub->insnBuffer[0])); | |
4bf21fa4 BP |
1149 | return -EFAULT; |
1150 | } | |
1151 | ||
0a85b6f0 MT |
1152 | static int usbdux_ai_inttrig(struct comedi_device *dev, |
1153 | struct comedi_subdevice *s, unsigned int trignum) | |
4bf21fa4 BP |
1154 | { |
1155 | int ret; | |
cc92fca7 | 1156 | struct usbduxsub *this_usbduxsub = dev->private; |
4274ea02 | 1157 | if (!this_usbduxsub) |
4bf21fa4 | 1158 | return -EFAULT; |
4274ea02 | 1159 | |
4bf21fa4 BP |
1160 | down(&this_usbduxsub->sem); |
1161 | if (!(this_usbduxsub->probed)) { | |
1162 | up(&this_usbduxsub->sem); | |
1163 | return -ENODEV; | |
1164 | } | |
c0e0c26e GKH |
1165 | dev_dbg(&this_usbduxsub->interface->dev, |
1166 | "comedi%d: usbdux_ai_inttrig\n", dev->minor); | |
4bf21fa4 BP |
1167 | |
1168 | if (trignum != 0) { | |
c0e0c26e GKH |
1169 | dev_err(&this_usbduxsub->interface->dev, |
1170 | "comedi%d: usbdux_ai_inttrig: invalid trignum\n", | |
4bf21fa4 BP |
1171 | dev->minor); |
1172 | up(&this_usbduxsub->sem); | |
1173 | return -EINVAL; | |
1174 | } | |
1175 | if (!(this_usbduxsub->ai_cmd_running)) { | |
1176 | this_usbduxsub->ai_cmd_running = 1; | |
1177 | ret = usbduxsub_submit_InURBs(this_usbduxsub); | |
1178 | if (ret < 0) { | |
c0e0c26e GKH |
1179 | dev_err(&this_usbduxsub->interface->dev, |
1180 | "comedi%d: usbdux_ai_inttrig: " | |
1181 | "urbSubmit: err=%d\n", dev->minor, ret); | |
4bf21fa4 BP |
1182 | this_usbduxsub->ai_cmd_running = 0; |
1183 | up(&this_usbduxsub->sem); | |
1184 | return ret; | |
1185 | } | |
1186 | s->async->inttrig = NULL; | |
1187 | } else { | |
c0e0c26e GKH |
1188 | dev_err(&this_usbduxsub->interface->dev, |
1189 | "comedi%d: ai_inttrig but acqu is already running\n", | |
4bf21fa4 BP |
1190 | dev->minor); |
1191 | } | |
1192 | up(&this_usbduxsub->sem); | |
1193 | return 1; | |
1194 | } | |
1195 | ||
34c43922 | 1196 | static int usbdux_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) |
4bf21fa4 | 1197 | { |
ea6d0d4c | 1198 | struct comedi_cmd *cmd = &s->async->cmd; |
4bf21fa4 BP |
1199 | unsigned int chan, range; |
1200 | int i, ret; | |
cc92fca7 | 1201 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 BP |
1202 | int result; |
1203 | ||
8fa07567 | 1204 | if (!this_usbduxsub) |
4bf21fa4 | 1205 | return -EFAULT; |
8fa07567 | 1206 | |
c0e0c26e GKH |
1207 | dev_dbg(&this_usbduxsub->interface->dev, |
1208 | "comedi%d: usbdux_ai_cmd\n", dev->minor); | |
1209 | ||
8fa07567 | 1210 | /* block other CPUs from starting an ai_cmd */ |
4bf21fa4 BP |
1211 | down(&this_usbduxsub->sem); |
1212 | ||
1213 | if (!(this_usbduxsub->probed)) { | |
1214 | up(&this_usbduxsub->sem); | |
1215 | return -ENODEV; | |
1216 | } | |
1217 | if (this_usbduxsub->ai_cmd_running) { | |
c0e0c26e GKH |
1218 | dev_err(&this_usbduxsub->interface->dev, "comedi%d: " |
1219 | "ai_cmd not possible. Another ai_cmd is running.\n", | |
1220 | dev->minor); | |
4bf21fa4 BP |
1221 | up(&this_usbduxsub->sem); |
1222 | return -EBUSY; | |
1223 | } | |
8fa07567 | 1224 | /* set current channel of the running aquisition to zero */ |
4bf21fa4 BP |
1225 | s->async->cur_chan = 0; |
1226 | ||
1227 | this_usbduxsub->dux_commands[1] = cmd->chanlist_len; | |
1228 | for (i = 0; i < cmd->chanlist_len; ++i) { | |
1229 | chan = CR_CHAN(cmd->chanlist[i]); | |
1230 | range = CR_RANGE(cmd->chanlist[i]); | |
1231 | if (i >= NUMCHANNELS) { | |
c0e0c26e GKH |
1232 | dev_err(&this_usbduxsub->interface->dev, |
1233 | "comedi%d: channel list too long\n", | |
1234 | dev->minor); | |
4bf21fa4 BP |
1235 | break; |
1236 | } | |
1237 | this_usbduxsub->dux_commands[i + 2] = | |
0a85b6f0 | 1238 | create_adc_command(chan, range); |
4bf21fa4 BP |
1239 | } |
1240 | ||
c0e0c26e GKH |
1241 | dev_dbg(&this_usbduxsub->interface->dev, |
1242 | "comedi %d: sending commands to the usb device: size=%u\n", | |
1243 | dev->minor, NUMCHANNELS); | |
1244 | ||
4274ea02 GKH |
1245 | result = send_dux_commands(this_usbduxsub, SENDADCOMMANDS); |
1246 | if (result < 0) { | |
4bf21fa4 BP |
1247 | up(&this_usbduxsub->sem); |
1248 | return result; | |
1249 | } | |
1250 | ||
1251 | if (this_usbduxsub->high_speed) { | |
8fa07567 GKH |
1252 | /* |
1253 | * every channel gets a time window of 125us. Thus, if we | |
1254 | * sample all 8 channels we need 1ms. If we sample only one | |
1255 | * channel we need only 125us | |
1256 | */ | |
4bf21fa4 | 1257 | this_usbduxsub->ai_interval = 1; |
8fa07567 | 1258 | /* find a power of 2 for the interval */ |
4bf21fa4 BP |
1259 | while ((this_usbduxsub->ai_interval) < (cmd->chanlist_len)) { |
1260 | this_usbduxsub->ai_interval = | |
0a85b6f0 | 1261 | (this_usbduxsub->ai_interval) * 2; |
4bf21fa4 | 1262 | } |
8fa07567 | 1263 | this_usbduxsub->ai_timer = cmd->scan_begin_arg / (125000 * |
0a85b6f0 MT |
1264 | (this_usbduxsub-> |
1265 | ai_interval)); | |
4bf21fa4 | 1266 | } else { |
8fa07567 | 1267 | /* interval always 1ms */ |
4bf21fa4 BP |
1268 | this_usbduxsub->ai_interval = 1; |
1269 | this_usbduxsub->ai_timer = cmd->scan_begin_arg / 1000000; | |
1270 | } | |
1271 | if (this_usbduxsub->ai_timer < 1) { | |
c0e0c26e GKH |
1272 | dev_err(&this_usbduxsub->interface->dev, "comedi%d: ai_cmd: " |
1273 | "timer=%d, scan_begin_arg=%d. " | |
1274 | "Not properly tested by cmdtest?\n", dev->minor, | |
1275 | this_usbduxsub->ai_timer, cmd->scan_begin_arg); | |
4bf21fa4 BP |
1276 | up(&this_usbduxsub->sem); |
1277 | return -EINVAL; | |
1278 | } | |
1279 | this_usbduxsub->ai_counter = this_usbduxsub->ai_timer; | |
1280 | ||
1281 | if (cmd->stop_src == TRIG_COUNT) { | |
e54fb9c1 | 1282 | /* data arrives as one packet */ |
4bf21fa4 BP |
1283 | this_usbduxsub->ai_sample_count = cmd->stop_arg; |
1284 | this_usbduxsub->ai_continous = 0; | |
1285 | } else { | |
e54fb9c1 | 1286 | /* continous aquisition */ |
4bf21fa4 BP |
1287 | this_usbduxsub->ai_continous = 1; |
1288 | this_usbduxsub->ai_sample_count = 0; | |
1289 | } | |
1290 | ||
1291 | if (cmd->start_src == TRIG_NOW) { | |
e54fb9c1 | 1292 | /* enable this acquisition operation */ |
4bf21fa4 BP |
1293 | this_usbduxsub->ai_cmd_running = 1; |
1294 | ret = usbduxsub_submit_InURBs(this_usbduxsub); | |
1295 | if (ret < 0) { | |
1296 | this_usbduxsub->ai_cmd_running = 0; | |
e54fb9c1 | 1297 | /* fixme: unlink here?? */ |
4bf21fa4 BP |
1298 | up(&this_usbduxsub->sem); |
1299 | return ret; | |
1300 | } | |
1301 | s->async->inttrig = NULL; | |
1302 | } else { | |
1303 | /* TRIG_INT */ | |
e54fb9c1 GKH |
1304 | /* don't enable the acquision operation */ |
1305 | /* wait for an internal signal */ | |
4bf21fa4 BP |
1306 | s->async->inttrig = usbdux_ai_inttrig; |
1307 | } | |
1308 | up(&this_usbduxsub->sem); | |
1309 | return 0; | |
1310 | } | |
1311 | ||
1312 | /* Mode 0 is used to get a single conversion on demand */ | |
0a85b6f0 MT |
1313 | static int usbdux_ai_insn_read(struct comedi_device *dev, |
1314 | struct comedi_subdevice *s, | |
90035c08 | 1315 | struct comedi_insn *insn, unsigned int *data) |
4bf21fa4 BP |
1316 | { |
1317 | int i; | |
790c5541 | 1318 | unsigned int one = 0; |
4bf21fa4 BP |
1319 | int chan, range; |
1320 | int err; | |
cc92fca7 | 1321 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 | 1322 | |
c0e0c26e | 1323 | if (!this_usbduxsub) |
4bf21fa4 | 1324 | return 0; |
c0e0c26e GKH |
1325 | |
1326 | dev_dbg(&this_usbduxsub->interface->dev, | |
1327 | "comedi%d: ai_insn_read, insn->n=%d, insn->subdev=%d\n", | |
4bf21fa4 | 1328 | dev->minor, insn->n, insn->subdev); |
c0e0c26e | 1329 | |
4bf21fa4 BP |
1330 | down(&this_usbduxsub->sem); |
1331 | if (!(this_usbduxsub->probed)) { | |
1332 | up(&this_usbduxsub->sem); | |
1333 | return -ENODEV; | |
1334 | } | |
1335 | if (this_usbduxsub->ai_cmd_running) { | |
c0e0c26e GKH |
1336 | dev_err(&this_usbduxsub->interface->dev, |
1337 | "comedi%d: ai_insn_read not possible. " | |
1338 | "Async Command is running.\n", dev->minor); | |
4bf21fa4 BP |
1339 | up(&this_usbduxsub->sem); |
1340 | return 0; | |
1341 | } | |
1342 | ||
e54fb9c1 | 1343 | /* sample one channel */ |
4bf21fa4 BP |
1344 | chan = CR_CHAN(insn->chanspec); |
1345 | range = CR_RANGE(insn->chanspec); | |
e54fb9c1 | 1346 | /* set command for the first channel */ |
4bf21fa4 BP |
1347 | this_usbduxsub->dux_commands[1] = create_adc_command(chan, range); |
1348 | ||
e54fb9c1 | 1349 | /* adc commands */ |
4274ea02 GKH |
1350 | err = send_dux_commands(this_usbduxsub, SENDSINGLEAD); |
1351 | if (err < 0) { | |
4bf21fa4 BP |
1352 | up(&this_usbduxsub->sem); |
1353 | return err; | |
1354 | } | |
1355 | ||
1356 | for (i = 0; i < insn->n; i++) { | |
4274ea02 GKH |
1357 | err = receive_dux_commands(this_usbduxsub, SENDSINGLEAD); |
1358 | if (err < 0) { | |
4bf21fa4 BP |
1359 | up(&this_usbduxsub->sem); |
1360 | return 0; | |
1361 | } | |
1362 | one = le16_to_cpu(this_usbduxsub->insnBuffer[1]); | |
8fa07567 | 1363 | if (CR_RANGE(insn->chanspec) <= 1) |
4bf21fa4 | 1364 | one = one ^ 0x800; |
8fa07567 | 1365 | |
4bf21fa4 BP |
1366 | data[i] = one; |
1367 | } | |
1368 | up(&this_usbduxsub->sem); | |
1369 | return i; | |
1370 | } | |
1371 | ||
e54fb9c1 GKH |
1372 | /************************************/ |
1373 | /* analog out */ | |
4bf21fa4 | 1374 | |
0a85b6f0 MT |
1375 | static int usbdux_ao_insn_read(struct comedi_device *dev, |
1376 | struct comedi_subdevice *s, | |
90035c08 | 1377 | struct comedi_insn *insn, unsigned int *data) |
4bf21fa4 BP |
1378 | { |
1379 | int i; | |
1380 | int chan = CR_CHAN(insn->chanspec); | |
cc92fca7 | 1381 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 | 1382 | |
8fa07567 | 1383 | if (!this_usbduxsub) |
4bf21fa4 | 1384 | return -EFAULT; |
8fa07567 | 1385 | |
4bf21fa4 BP |
1386 | down(&this_usbduxsub->sem); |
1387 | if (!(this_usbduxsub->probed)) { | |
1388 | up(&this_usbduxsub->sem); | |
1389 | return -ENODEV; | |
1390 | } | |
8fa07567 | 1391 | for (i = 0; i < insn->n; i++) |
4bf21fa4 | 1392 | data[i] = this_usbduxsub->outBuffer[chan]; |
8fa07567 | 1393 | |
4bf21fa4 BP |
1394 | up(&this_usbduxsub->sem); |
1395 | return i; | |
1396 | } | |
1397 | ||
0a85b6f0 MT |
1398 | static int usbdux_ao_insn_write(struct comedi_device *dev, |
1399 | struct comedi_subdevice *s, | |
90035c08 | 1400 | struct comedi_insn *insn, unsigned int *data) |
4bf21fa4 BP |
1401 | { |
1402 | int i, err; | |
1403 | int chan = CR_CHAN(insn->chanspec); | |
cc92fca7 | 1404 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 | 1405 | |
8fa07567 | 1406 | if (!this_usbduxsub) |
4bf21fa4 | 1407 | return -EFAULT; |
8fa07567 | 1408 | |
c0e0c26e GKH |
1409 | dev_dbg(&this_usbduxsub->interface->dev, |
1410 | "comedi%d: ao_insn_write\n", dev->minor); | |
1411 | ||
4bf21fa4 BP |
1412 | down(&this_usbduxsub->sem); |
1413 | if (!(this_usbduxsub->probed)) { | |
1414 | up(&this_usbduxsub->sem); | |
1415 | return -ENODEV; | |
1416 | } | |
1417 | if (this_usbduxsub->ao_cmd_running) { | |
c0e0c26e GKH |
1418 | dev_err(&this_usbduxsub->interface->dev, |
1419 | "comedi%d: ao_insn_write: " | |
1420 | "ERROR: asynchronous ao_cmd is running\n", dev->minor); | |
4bf21fa4 BP |
1421 | up(&this_usbduxsub->sem); |
1422 | return 0; | |
1423 | } | |
1424 | ||
1425 | for (i = 0; i < insn->n; i++) { | |
c0e0c26e GKH |
1426 | dev_dbg(&this_usbduxsub->interface->dev, |
1427 | "comedi%d: ao_insn_write: data[chan=%d,i=%d]=%d\n", | |
4bf21fa4 | 1428 | dev->minor, chan, i, data[i]); |
c0e0c26e | 1429 | |
e54fb9c1 | 1430 | /* number of channels: 1 */ |
4bf21fa4 | 1431 | this_usbduxsub->dux_commands[1] = 1; |
e54fb9c1 | 1432 | /* one 16 bit value */ |
4bf21fa4 | 1433 | *((int16_t *) (this_usbduxsub->dux_commands + 2)) = |
0a85b6f0 | 1434 | cpu_to_le16(data[i]); |
4bf21fa4 | 1435 | this_usbduxsub->outBuffer[chan] = data[i]; |
e54fb9c1 | 1436 | /* channel number */ |
4bf21fa4 | 1437 | this_usbduxsub->dux_commands[4] = (chan << 6); |
4274ea02 GKH |
1438 | err = send_dux_commands(this_usbduxsub, SENDDACOMMANDS); |
1439 | if (err < 0) { | |
4bf21fa4 BP |
1440 | up(&this_usbduxsub->sem); |
1441 | return err; | |
1442 | } | |
1443 | } | |
1444 | up(&this_usbduxsub->sem); | |
1445 | ||
1446 | return i; | |
1447 | } | |
1448 | ||
0a85b6f0 MT |
1449 | static int usbdux_ao_inttrig(struct comedi_device *dev, |
1450 | struct comedi_subdevice *s, unsigned int trignum) | |
4bf21fa4 BP |
1451 | { |
1452 | int ret; | |
cc92fca7 | 1453 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 | 1454 | |
8fa07567 | 1455 | if (!this_usbduxsub) |
4bf21fa4 | 1456 | return -EFAULT; |
8fa07567 | 1457 | |
4bf21fa4 BP |
1458 | down(&this_usbduxsub->sem); |
1459 | if (!(this_usbduxsub->probed)) { | |
1460 | up(&this_usbduxsub->sem); | |
1461 | return -ENODEV; | |
1462 | } | |
1463 | if (trignum != 0) { | |
c0e0c26e GKH |
1464 | dev_err(&this_usbduxsub->interface->dev, |
1465 | "comedi%d: usbdux_ao_inttrig: invalid trignum\n", | |
4bf21fa4 BP |
1466 | dev->minor); |
1467 | return -EINVAL; | |
1468 | } | |
1469 | if (!(this_usbduxsub->ao_cmd_running)) { | |
1470 | this_usbduxsub->ao_cmd_running = 1; | |
1471 | ret = usbduxsub_submit_OutURBs(this_usbduxsub); | |
1472 | if (ret < 0) { | |
c0e0c26e GKH |
1473 | dev_err(&this_usbduxsub->interface->dev, |
1474 | "comedi%d: usbdux_ao_inttrig: submitURB: " | |
1475 | "err=%d\n", dev->minor, ret); | |
4bf21fa4 BP |
1476 | this_usbduxsub->ao_cmd_running = 0; |
1477 | up(&this_usbduxsub->sem); | |
1478 | return ret; | |
1479 | } | |
1480 | s->async->inttrig = NULL; | |
1481 | } else { | |
c0e0c26e GKH |
1482 | dev_err(&this_usbduxsub->interface->dev, |
1483 | "comedi%d: ao_inttrig but acqu is already running.\n", | |
4bf21fa4 BP |
1484 | dev->minor); |
1485 | } | |
1486 | up(&this_usbduxsub->sem); | |
1487 | return 1; | |
1488 | } | |
1489 | ||
0a85b6f0 MT |
1490 | static int usbdux_ao_cmdtest(struct comedi_device *dev, |
1491 | struct comedi_subdevice *s, struct comedi_cmd *cmd) | |
4bf21fa4 BP |
1492 | { |
1493 | int err = 0, tmp; | |
cc92fca7 | 1494 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 | 1495 | |
8fa07567 | 1496 | if (!this_usbduxsub) |
4bf21fa4 | 1497 | return -EFAULT; |
8fa07567 GKH |
1498 | |
1499 | if (!(this_usbduxsub->probed)) | |
4bf21fa4 | 1500 | return -ENODEV; |
8fa07567 | 1501 | |
c0e0c26e GKH |
1502 | dev_dbg(&this_usbduxsub->interface->dev, |
1503 | "comedi%d: usbdux_ao_cmdtest\n", dev->minor); | |
1504 | ||
4bf21fa4 | 1505 | /* make sure triggers are valid */ |
e54fb9c1 | 1506 | /* Only immediate triggers are allowed */ |
4bf21fa4 BP |
1507 | tmp = cmd->start_src; |
1508 | cmd->start_src &= TRIG_NOW | TRIG_INT; | |
1509 | if (!cmd->start_src || tmp != cmd->start_src) | |
1510 | err++; | |
1511 | ||
e54fb9c1 | 1512 | /* trigger should happen timed */ |
4bf21fa4 | 1513 | tmp = cmd->scan_begin_src; |
e54fb9c1 GKH |
1514 | /* just now we scan also in the high speed mode every frame */ |
1515 | /* this is due to ehci driver limitations */ | |
4bf21fa4 | 1516 | if (0) { /* (this_usbduxsub->high_speed) */ |
e54fb9c1 GKH |
1517 | /* start immidiately a new scan */ |
1518 | /* the sampling rate is set by the coversion rate */ | |
4bf21fa4 BP |
1519 | cmd->scan_begin_src &= TRIG_FOLLOW; |
1520 | } else { | |
e54fb9c1 | 1521 | /* start a new scan (output at once) with a timer */ |
4bf21fa4 BP |
1522 | cmd->scan_begin_src &= TRIG_TIMER; |
1523 | } | |
1524 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
1525 | err++; | |
1526 | ||
e54fb9c1 | 1527 | /* scanning is continous */ |
4bf21fa4 | 1528 | tmp = cmd->convert_src; |
e54fb9c1 | 1529 | /* we always output at 1kHz just now all channels at once */ |
4bf21fa4 | 1530 | if (0) { /* (this_usbduxsub->high_speed) */ |
4274ea02 GKH |
1531 | /* |
1532 | * in usb-2.0 only one conversion it tranmitted but with 8kHz/n | |
1533 | */ | |
4bf21fa4 BP |
1534 | cmd->convert_src &= TRIG_TIMER; |
1535 | } else { | |
4274ea02 GKH |
1536 | /* all conversion events happen simultaneously with a rate of |
1537 | * 1kHz/n */ | |
4bf21fa4 BP |
1538 | cmd->convert_src &= TRIG_NOW; |
1539 | } | |
1540 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
1541 | err++; | |
1542 | ||
e54fb9c1 | 1543 | /* issue a trigger when scan is finished and start a new scan */ |
4bf21fa4 BP |
1544 | tmp = cmd->scan_end_src; |
1545 | cmd->scan_end_src &= TRIG_COUNT; | |
1546 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
1547 | err++; | |
1548 | ||
e54fb9c1 | 1549 | /* trigger at the end of count events or not, stop condition or not */ |
4bf21fa4 BP |
1550 | tmp = cmd->stop_src; |
1551 | cmd->stop_src &= TRIG_COUNT | TRIG_NONE; | |
1552 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
1553 | err++; | |
1554 | ||
1555 | if (err) | |
1556 | return 1; | |
1557 | ||
4274ea02 GKH |
1558 | /* |
1559 | * step 2: make sure trigger sources are unique and mutually compatible | |
828684f9 | 1560 | * note that mutual compatibility is not an issue here |
4274ea02 | 1561 | */ |
4bf21fa4 | 1562 | if (cmd->scan_begin_src != TRIG_FOLLOW && |
0a85b6f0 MT |
1563 | cmd->scan_begin_src != TRIG_EXT && |
1564 | cmd->scan_begin_src != TRIG_TIMER) | |
4bf21fa4 BP |
1565 | err++; |
1566 | if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE) | |
1567 | err++; | |
1568 | ||
1569 | if (err) | |
1570 | return 2; | |
1571 | ||
1572 | /* step 3: make sure arguments are trivially compatible */ | |
1573 | ||
1574 | if (cmd->start_arg != 0) { | |
1575 | cmd->start_arg = 0; | |
1576 | err++; | |
1577 | } | |
1578 | ||
1579 | if (cmd->scan_begin_src == TRIG_FOLLOW) { | |
1580 | /* internal trigger */ | |
1581 | if (cmd->scan_begin_arg != 0) { | |
1582 | cmd->scan_begin_arg = 0; | |
1583 | err++; | |
1584 | } | |
1585 | } | |
1586 | ||
1587 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
1588 | /* timer */ | |
1589 | if (cmd->scan_begin_arg < 1000000) { | |
1590 | cmd->scan_begin_arg = 1000000; | |
1591 | err++; | |
1592 | } | |
1593 | } | |
e54fb9c1 | 1594 | /* not used now, is for later use */ |
4bf21fa4 BP |
1595 | if (cmd->convert_src == TRIG_TIMER) { |
1596 | if (cmd->convert_arg < 125000) { | |
1597 | cmd->convert_arg = 125000; | |
1598 | err++; | |
1599 | } | |
1600 | } | |
1601 | ||
e54fb9c1 | 1602 | /* the same argument */ |
4bf21fa4 BP |
1603 | if (cmd->scan_end_arg != cmd->chanlist_len) { |
1604 | cmd->scan_end_arg = cmd->chanlist_len; | |
1605 | err++; | |
1606 | } | |
1607 | ||
1608 | if (cmd->stop_src == TRIG_COUNT) { | |
1609 | /* any count is allowed */ | |
1610 | } else { | |
1611 | /* TRIG_NONE */ | |
1612 | if (cmd->stop_arg != 0) { | |
1613 | cmd->stop_arg = 0; | |
1614 | err++; | |
1615 | } | |
1616 | } | |
1617 | ||
c0e0c26e GKH |
1618 | dev_dbg(&this_usbduxsub->interface->dev, "comedi%d: err=%d, " |
1619 | "scan_begin_src=%d, scan_begin_arg=%d, convert_src=%d, " | |
1620 | "convert_arg=%d\n", dev->minor, err, cmd->scan_begin_src, | |
1621 | cmd->scan_begin_arg, cmd->convert_src, cmd->convert_arg); | |
4bf21fa4 BP |
1622 | |
1623 | if (err) | |
1624 | return 3; | |
1625 | ||
1626 | return 0; | |
1627 | } | |
1628 | ||
34c43922 | 1629 | static int usbdux_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s) |
4bf21fa4 | 1630 | { |
ea6d0d4c | 1631 | struct comedi_cmd *cmd = &s->async->cmd; |
4bf21fa4 BP |
1632 | unsigned int chan, gain; |
1633 | int i, ret; | |
cc92fca7 | 1634 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 | 1635 | |
8fa07567 | 1636 | if (!this_usbduxsub) |
4bf21fa4 | 1637 | return -EFAULT; |
8fa07567 | 1638 | |
4bf21fa4 BP |
1639 | down(&this_usbduxsub->sem); |
1640 | if (!(this_usbduxsub->probed)) { | |
1641 | up(&this_usbduxsub->sem); | |
1642 | return -ENODEV; | |
1643 | } | |
c0e0c26e GKH |
1644 | dev_dbg(&this_usbduxsub->interface->dev, |
1645 | "comedi%d: %s\n", dev->minor, __func__); | |
4bf21fa4 | 1646 | |
e54fb9c1 | 1647 | /* set current channel of the running aquisition to zero */ |
4bf21fa4 BP |
1648 | s->async->cur_chan = 0; |
1649 | for (i = 0; i < cmd->chanlist_len; ++i) { | |
1650 | chan = CR_CHAN(cmd->chanlist[i]); | |
1651 | gain = CR_RANGE(cmd->chanlist[i]); | |
1652 | if (i >= NUMOUTCHANNELS) { | |
c0e0c26e GKH |
1653 | dev_err(&this_usbduxsub->interface->dev, |
1654 | "comedi%d: %s: channel list too long\n", | |
1655 | dev->minor, __func__); | |
4bf21fa4 BP |
1656 | break; |
1657 | } | |
1658 | this_usbduxsub->dac_commands[i] = (chan << 6); | |
c0e0c26e GKH |
1659 | dev_dbg(&this_usbduxsub->interface->dev, |
1660 | "comedi%d: dac command for ch %d is %x\n", | |
4bf21fa4 | 1661 | dev->minor, i, this_usbduxsub->dac_commands[i]); |
4bf21fa4 BP |
1662 | } |
1663 | ||
e54fb9c1 GKH |
1664 | /* we count in steps of 1ms (125us) */ |
1665 | /* 125us mode not used yet */ | |
4bf21fa4 | 1666 | if (0) { /* (this_usbduxsub->high_speed) */ |
e54fb9c1 GKH |
1667 | /* 125us */ |
1668 | /* timing of the conversion itself: every 125 us */ | |
4bf21fa4 BP |
1669 | this_usbduxsub->ao_timer = cmd->convert_arg / 125000; |
1670 | } else { | |
e54fb9c1 GKH |
1671 | /* 1ms */ |
1672 | /* timing of the scan: we get all channels at once */ | |
4bf21fa4 | 1673 | this_usbduxsub->ao_timer = cmd->scan_begin_arg / 1000000; |
c0e0c26e GKH |
1674 | dev_dbg(&this_usbduxsub->interface->dev, |
1675 | "comedi%d: scan_begin_src=%d, scan_begin_arg=%d, " | |
1676 | "convert_src=%d, convert_arg=%d\n", dev->minor, | |
1677 | cmd->scan_begin_src, cmd->scan_begin_arg, | |
1678 | cmd->convert_src, cmd->convert_arg); | |
1679 | dev_dbg(&this_usbduxsub->interface->dev, | |
1680 | "comedi%d: ao_timer=%d (ms)\n", | |
4bf21fa4 | 1681 | dev->minor, this_usbduxsub->ao_timer); |
4bf21fa4 | 1682 | if (this_usbduxsub->ao_timer < 1) { |
c0e0c26e GKH |
1683 | dev_err(&this_usbduxsub->interface->dev, |
1684 | "comedi%d: usbdux: ao_timer=%d, " | |
1685 | "scan_begin_arg=%d. " | |
1686 | "Not properly tested by cmdtest?\n", | |
1687 | dev->minor, this_usbduxsub->ao_timer, | |
1688 | cmd->scan_begin_arg); | |
4bf21fa4 BP |
1689 | up(&this_usbduxsub->sem); |
1690 | return -EINVAL; | |
1691 | } | |
1692 | } | |
1693 | this_usbduxsub->ao_counter = this_usbduxsub->ao_timer; | |
1694 | ||
1695 | if (cmd->stop_src == TRIG_COUNT) { | |
e54fb9c1 GKH |
1696 | /* not continous */ |
1697 | /* counter */ | |
1698 | /* high speed also scans everything at once */ | |
4bf21fa4 BP |
1699 | if (0) { /* (this_usbduxsub->high_speed) */ |
1700 | this_usbduxsub->ao_sample_count = | |
0a85b6f0 | 1701 | (cmd->stop_arg) * (cmd->scan_end_arg); |
4bf21fa4 | 1702 | } else { |
e54fb9c1 GKH |
1703 | /* there's no scan as the scan has been */ |
1704 | /* perf inside the FX2 */ | |
1705 | /* data arrives as one packet */ | |
4bf21fa4 BP |
1706 | this_usbduxsub->ao_sample_count = cmd->stop_arg; |
1707 | } | |
1708 | this_usbduxsub->ao_continous = 0; | |
1709 | } else { | |
e54fb9c1 | 1710 | /* continous aquisition */ |
4bf21fa4 BP |
1711 | this_usbduxsub->ao_continous = 1; |
1712 | this_usbduxsub->ao_sample_count = 0; | |
1713 | } | |
1714 | ||
1715 | if (cmd->start_src == TRIG_NOW) { | |
e54fb9c1 | 1716 | /* enable this acquisition operation */ |
4bf21fa4 BP |
1717 | this_usbduxsub->ao_cmd_running = 1; |
1718 | ret = usbduxsub_submit_OutURBs(this_usbduxsub); | |
1719 | if (ret < 0) { | |
1720 | this_usbduxsub->ao_cmd_running = 0; | |
e54fb9c1 | 1721 | /* fixme: unlink here?? */ |
4bf21fa4 BP |
1722 | up(&this_usbduxsub->sem); |
1723 | return ret; | |
1724 | } | |
1725 | s->async->inttrig = NULL; | |
1726 | } else { | |
1727 | /* TRIG_INT */ | |
e54fb9c1 GKH |
1728 | /* submit the urbs later */ |
1729 | /* wait for an internal signal */ | |
4bf21fa4 BP |
1730 | s->async->inttrig = usbdux_ao_inttrig; |
1731 | } | |
1732 | ||
1733 | up(&this_usbduxsub->sem); | |
1734 | return 0; | |
1735 | } | |
1736 | ||
0a85b6f0 MT |
1737 | static int usbdux_dio_insn_config(struct comedi_device *dev, |
1738 | struct comedi_subdevice *s, | |
90035c08 | 1739 | struct comedi_insn *insn, unsigned int *data) |
4bf21fa4 BP |
1740 | { |
1741 | int chan = CR_CHAN(insn->chanspec); | |
1742 | ||
1743 | /* The input or output configuration of each digital line is | |
1744 | * configured by a special insn_config instruction. chanspec | |
1745 | * contains the channel to be changed, and data[0] contains the | |
1746 | * value COMEDI_INPUT or COMEDI_OUTPUT. */ | |
1747 | ||
1748 | switch (data[0]) { | |
1749 | case INSN_CONFIG_DIO_OUTPUT: | |
1750 | s->io_bits |= 1 << chan; /* 1 means Out */ | |
1751 | break; | |
1752 | case INSN_CONFIG_DIO_INPUT: | |
1753 | s->io_bits &= ~(1 << chan); | |
1754 | break; | |
1755 | case INSN_CONFIG_DIO_QUERY: | |
1756 | data[1] = | |
0a85b6f0 | 1757 | (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT; |
4bf21fa4 BP |
1758 | break; |
1759 | default: | |
1760 | return -EINVAL; | |
1761 | break; | |
1762 | } | |
e54fb9c1 GKH |
1763 | /* we don't tell the firmware here as it would take 8 frames */ |
1764 | /* to submit the information. We do it in the insn_bits. */ | |
4bf21fa4 BP |
1765 | return insn->n; |
1766 | } | |
1767 | ||
0a85b6f0 MT |
1768 | static int usbdux_dio_insn_bits(struct comedi_device *dev, |
1769 | struct comedi_subdevice *s, | |
90035c08 | 1770 | struct comedi_insn *insn, unsigned int *data) |
4bf21fa4 BP |
1771 | { |
1772 | ||
cc92fca7 | 1773 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 BP |
1774 | int err; |
1775 | ||
8fa07567 | 1776 | if (!this_usbduxsub) |
4bf21fa4 | 1777 | return -EFAULT; |
8fa07567 | 1778 | |
4bf21fa4 BP |
1779 | if (insn->n != 2) |
1780 | return -EINVAL; | |
1781 | ||
1782 | down(&this_usbduxsub->sem); | |
1783 | ||
1784 | if (!(this_usbduxsub->probed)) { | |
1785 | up(&this_usbduxsub->sem); | |
1786 | return -ENODEV; | |
1787 | } | |
1788 | ||
1789 | /* The insn data is a mask in data[0] and the new data | |
1790 | * in data[1], each channel cooresponding to a bit. */ | |
1791 | s->state &= ~data[0]; | |
1792 | s->state |= data[0] & data[1]; | |
1793 | this_usbduxsub->dux_commands[1] = s->io_bits; | |
1794 | this_usbduxsub->dux_commands[2] = s->state; | |
1795 | ||
e54fb9c1 GKH |
1796 | /* This command also tells the firmware to return */ |
1797 | /* the digital input lines */ | |
4274ea02 GKH |
1798 | err = send_dux_commands(this_usbduxsub, SENDDIOBITSCOMMAND); |
1799 | if (err < 0) { | |
4bf21fa4 BP |
1800 | up(&this_usbduxsub->sem); |
1801 | return err; | |
1802 | } | |
4274ea02 GKH |
1803 | err = receive_dux_commands(this_usbduxsub, SENDDIOBITSCOMMAND); |
1804 | if (err < 0) { | |
4bf21fa4 BP |
1805 | up(&this_usbduxsub->sem); |
1806 | return err; | |
1807 | } | |
1808 | ||
1809 | data[1] = le16_to_cpu(this_usbduxsub->insnBuffer[1]); | |
1810 | up(&this_usbduxsub->sem); | |
1811 | return 2; | |
1812 | } | |
1813 | ||
8fa07567 | 1814 | /* reads the 4 counters, only two are used just now */ |
0a85b6f0 MT |
1815 | static int usbdux_counter_read(struct comedi_device *dev, |
1816 | struct comedi_subdevice *s, | |
90035c08 | 1817 | struct comedi_insn *insn, unsigned int *data) |
4bf21fa4 | 1818 | { |
cc92fca7 | 1819 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 BP |
1820 | int chan = insn->chanspec; |
1821 | int err; | |
1822 | ||
8fa07567 | 1823 | if (!this_usbduxsub) |
4bf21fa4 | 1824 | return -EFAULT; |
4bf21fa4 BP |
1825 | |
1826 | down(&this_usbduxsub->sem); | |
1827 | ||
1828 | if (!(this_usbduxsub->probed)) { | |
1829 | up(&this_usbduxsub->sem); | |
1830 | return -ENODEV; | |
1831 | } | |
1832 | ||
4274ea02 GKH |
1833 | err = send_dux_commands(this_usbduxsub, READCOUNTERCOMMAND); |
1834 | if (err < 0) { | |
4bf21fa4 BP |
1835 | up(&this_usbduxsub->sem); |
1836 | return err; | |
1837 | } | |
1838 | ||
4274ea02 GKH |
1839 | err = receive_dux_commands(this_usbduxsub, READCOUNTERCOMMAND); |
1840 | if (err < 0) { | |
4bf21fa4 BP |
1841 | up(&this_usbduxsub->sem); |
1842 | return err; | |
1843 | } | |
1844 | ||
1845 | data[0] = le16_to_cpu(this_usbduxsub->insnBuffer[chan + 1]); | |
1846 | up(&this_usbduxsub->sem); | |
1847 | return 1; | |
1848 | } | |
1849 | ||
0a85b6f0 MT |
1850 | static int usbdux_counter_write(struct comedi_device *dev, |
1851 | struct comedi_subdevice *s, | |
90035c08 | 1852 | struct comedi_insn *insn, unsigned int *data) |
4bf21fa4 | 1853 | { |
cc92fca7 | 1854 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 BP |
1855 | int err; |
1856 | ||
8fa07567 | 1857 | if (!this_usbduxsub) |
4bf21fa4 | 1858 | return -EFAULT; |
4bf21fa4 BP |
1859 | |
1860 | down(&this_usbduxsub->sem); | |
1861 | ||
1862 | if (!(this_usbduxsub->probed)) { | |
1863 | up(&this_usbduxsub->sem); | |
1864 | return -ENODEV; | |
1865 | } | |
1866 | ||
1867 | this_usbduxsub->dux_commands[1] = insn->chanspec; | |
1868 | *((int16_t *) (this_usbduxsub->dux_commands + 2)) = cpu_to_le16(*data); | |
1869 | ||
4274ea02 GKH |
1870 | err = send_dux_commands(this_usbduxsub, WRITECOUNTERCOMMAND); |
1871 | if (err < 0) { | |
4bf21fa4 BP |
1872 | up(&this_usbduxsub->sem); |
1873 | return err; | |
1874 | } | |
1875 | ||
1876 | up(&this_usbduxsub->sem); | |
1877 | ||
1878 | return 1; | |
1879 | } | |
1880 | ||
0a85b6f0 MT |
1881 | static int usbdux_counter_config(struct comedi_device *dev, |
1882 | struct comedi_subdevice *s, | |
90035c08 | 1883 | struct comedi_insn *insn, unsigned int *data) |
4bf21fa4 | 1884 | { |
e54fb9c1 | 1885 | /* nothing to do so far */ |
4bf21fa4 BP |
1886 | return 2; |
1887 | } | |
1888 | ||
e54fb9c1 GKH |
1889 | /***********************************/ |
1890 | /* PWM */ | |
4bf21fa4 | 1891 | |
cc92fca7 | 1892 | static int usbduxsub_unlink_PwmURBs(struct usbduxsub *usbduxsub_tmp) |
4bf21fa4 | 1893 | { |
4bf21fa4 BP |
1894 | int err = 0; |
1895 | ||
1896 | if (usbduxsub_tmp && usbduxsub_tmp->urbPwm) { | |
4398ecfa | 1897 | if (usbduxsub_tmp->urbPwm) |
4bf21fa4 | 1898 | usb_kill_urb(usbduxsub_tmp->urbPwm); |
c0e0c26e GKH |
1899 | dev_dbg(&usbduxsub_tmp->interface->dev, |
1900 | "comedi: unlinked PwmURB: res=%d\n", err); | |
4bf21fa4 BP |
1901 | } |
1902 | return err; | |
1903 | } | |
1904 | ||
1905 | /* This cancels a running acquisition operation | |
1906 | * in any context. | |
1907 | */ | |
cc92fca7 | 1908 | static int usbdux_pwm_stop(struct usbduxsub *this_usbduxsub, int do_unlink) |
4bf21fa4 BP |
1909 | { |
1910 | int ret = 0; | |
1911 | ||
c0e0c26e | 1912 | if (!this_usbduxsub) |
4bf21fa4 | 1913 | return -EFAULT; |
c0e0c26e GKH |
1914 | |
1915 | dev_dbg(&this_usbduxsub->interface->dev, "comedi: %s\n", __func__); | |
8fa07567 | 1916 | if (do_unlink) |
4bf21fa4 | 1917 | ret = usbduxsub_unlink_PwmURBs(this_usbduxsub); |
8fa07567 | 1918 | |
4bf21fa4 BP |
1919 | this_usbduxsub->pwm_cmd_running = 0; |
1920 | ||
1921 | return ret; | |
1922 | } | |
1923 | ||
8fa07567 | 1924 | /* force unlink - is called by comedi */ |
0a85b6f0 MT |
1925 | static int usbdux_pwm_cancel(struct comedi_device *dev, |
1926 | struct comedi_subdevice *s) | |
4bf21fa4 | 1927 | { |
cc92fca7 | 1928 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 BP |
1929 | int res = 0; |
1930 | ||
8fa07567 | 1931 | /* unlink only if it is really running */ |
4bf21fa4 BP |
1932 | res = usbdux_pwm_stop(this_usbduxsub, this_usbduxsub->pwm_cmd_running); |
1933 | ||
c0e0c26e GKH |
1934 | dev_dbg(&this_usbduxsub->interface->dev, |
1935 | "comedi %d: sending pwm off command to the usb device.\n", | |
4bf21fa4 | 1936 | dev->minor); |
4274ea02 GKH |
1937 | res = send_dux_commands(this_usbduxsub, SENDPWMOFF); |
1938 | if (res < 0) | |
4bf21fa4 | 1939 | return res; |
4bf21fa4 BP |
1940 | |
1941 | return res; | |
1942 | } | |
1943 | ||
4bf21fa4 BP |
1944 | static void usbduxsub_pwm_irq(struct urb *urb) |
1945 | { | |
4bf21fa4 | 1946 | int ret; |
cc92fca7 | 1947 | struct usbduxsub *this_usbduxsub; |
71b5f4f1 | 1948 | struct comedi_device *this_comedidev; |
34c43922 | 1949 | struct comedi_subdevice *s; |
4bf21fa4 | 1950 | |
c0e0c26e | 1951 | /* printk(KERN_DEBUG "PWM: IRQ\n"); */ |
4bf21fa4 | 1952 | |
e54fb9c1 | 1953 | /* the context variable points to the subdevice */ |
4bf21fa4 | 1954 | this_comedidev = urb->context; |
cc92fca7 | 1955 | /* the private structure of the subdevice is struct usbduxsub */ |
4bf21fa4 | 1956 | this_usbduxsub = this_comedidev->private; |
4bf21fa4 BP |
1957 | |
1958 | s = this_comedidev->subdevices + SUBDEV_DA; | |
1959 | ||
1960 | switch (urb->status) { | |
1961 | case 0: | |
1962 | /* success */ | |
1963 | break; | |
1964 | ||
4bf21fa4 BP |
1965 | case -ECONNRESET: |
1966 | case -ENOENT: | |
1967 | case -ESHUTDOWN: | |
1968 | case -ECONNABORTED: | |
8fa07567 GKH |
1969 | /* |
1970 | * after an unlink command, unplug, ... etc | |
1971 | * no unlink needed here. Already shutting down. | |
1972 | */ | |
1973 | if (this_usbduxsub->pwm_cmd_running) | |
4bf21fa4 | 1974 | usbdux_pwm_stop(this_usbduxsub, 0); |
8fa07567 | 1975 | |
4bf21fa4 BP |
1976 | return; |
1977 | ||
4bf21fa4 | 1978 | default: |
8fa07567 | 1979 | /* a real error */ |
4bf21fa4 | 1980 | if (this_usbduxsub->pwm_cmd_running) { |
c0e0c26e GKH |
1981 | dev_err(&this_usbduxsub->interface->dev, |
1982 | "comedi_: Non-zero urb status received in " | |
1983 | "pwm intr context: %d\n", urb->status); | |
4bf21fa4 BP |
1984 | usbdux_pwm_stop(this_usbduxsub, 0); |
1985 | } | |
1986 | return; | |
1987 | } | |
1988 | ||
8fa07567 GKH |
1989 | /* are we actually running? */ |
1990 | if (!(this_usbduxsub->pwm_cmd_running)) | |
4bf21fa4 | 1991 | return; |
4bf21fa4 BP |
1992 | |
1993 | urb->transfer_buffer_length = this_usbduxsub->sizePwmBuf; | |
1994 | urb->dev = this_usbduxsub->usbdev; | |
1995 | urb->status = 0; | |
1996 | if (this_usbduxsub->pwm_cmd_running) { | |
4aa3a823 | 1997 | ret = usb_submit_urb(urb, GFP_ATOMIC); |
4274ea02 | 1998 | if (ret < 0) { |
c0e0c26e GKH |
1999 | dev_err(&this_usbduxsub->interface->dev, |
2000 | "comedi_: pwm urb resubm failed in int-cont. " | |
2001 | "ret=%d", ret); | |
8fa07567 | 2002 | if (ret == EL2NSYNC) |
c0e0c26e GKH |
2003 | dev_err(&this_usbduxsub->interface->dev, |
2004 | "buggy USB host controller or bug in " | |
2005 | "IRQ handling!\n"); | |
8fa07567 GKH |
2006 | |
2007 | /* don't do an unlink here */ | |
4bf21fa4 BP |
2008 | usbdux_pwm_stop(this_usbduxsub, 0); |
2009 | } | |
2010 | } | |
2011 | } | |
2012 | ||
cc92fca7 | 2013 | static int usbduxsub_submit_PwmURBs(struct usbduxsub *usbduxsub) |
4bf21fa4 BP |
2014 | { |
2015 | int errFlag; | |
2016 | ||
8fa07567 | 2017 | if (!usbduxsub) |
4bf21fa4 | 2018 | return -EFAULT; |
8fa07567 | 2019 | |
c0e0c26e | 2020 | dev_dbg(&usbduxsub->interface->dev, "comedi_: submitting pwm-urb\n"); |
4bf21fa4 | 2021 | |
c0e0c26e | 2022 | /* in case of a resubmission after an unlink... */ |
4bf21fa4 | 2023 | usb_fill_bulk_urb(usbduxsub->urbPwm, |
0a85b6f0 MT |
2024 | usbduxsub->usbdev, |
2025 | usb_sndbulkpipe(usbduxsub->usbdev, PWM_EP), | |
2026 | usbduxsub->urbPwm->transfer_buffer, | |
2027 | usbduxsub->sizePwmBuf, usbduxsub_pwm_irq, | |
2028 | usbduxsub->comedidev); | |
4bf21fa4 | 2029 | |
4aa3a823 | 2030 | errFlag = usb_submit_urb(usbduxsub->urbPwm, GFP_ATOMIC); |
4bf21fa4 | 2031 | if (errFlag) { |
c0e0c26e | 2032 | dev_err(&usbduxsub->interface->dev, |
4aa3a823 | 2033 | "comedi_: usbdux: pwm: usb_submit_urb error %d\n", |
c0e0c26e | 2034 | errFlag); |
4bf21fa4 BP |
2035 | return errFlag; |
2036 | } | |
2037 | return 0; | |
2038 | } | |
2039 | ||
0a85b6f0 MT |
2040 | static int usbdux_pwm_period(struct comedi_device *dev, |
2041 | struct comedi_subdevice *s, unsigned int period) | |
4bf21fa4 | 2042 | { |
cc92fca7 | 2043 | struct usbduxsub *this_usbduxsub = dev->private; |
8fa07567 GKH |
2044 | int fx2delay = 255; |
2045 | ||
2046 | if (period < MIN_PWM_PERIOD) { | |
c0e0c26e GKH |
2047 | dev_err(&this_usbduxsub->interface->dev, |
2048 | "comedi%d: illegal period setting for pwm.\n", | |
2049 | dev->minor); | |
4bf21fa4 BP |
2050 | return -EAGAIN; |
2051 | } else { | |
0a85b6f0 | 2052 | fx2delay = period / ((int)(6 * 512 * (1.0 / 0.033))) - 6; |
4bf21fa4 | 2053 | if (fx2delay > 255) { |
c0e0c26e GKH |
2054 | dev_err(&this_usbduxsub->interface->dev, |
2055 | "comedi%d: period %d for pwm is too low.\n", | |
0a85b6f0 | 2056 | dev->minor, period); |
4bf21fa4 BP |
2057 | return -EAGAIN; |
2058 | } | |
2059 | } | |
8fa07567 GKH |
2060 | this_usbduxsub->pwmDelay = fx2delay; |
2061 | this_usbduxsub->pwmPeriod = period; | |
c0e0c26e GKH |
2062 | dev_dbg(&this_usbduxsub->interface->dev, "%s: frequ=%d, period=%d\n", |
2063 | __func__, period, fx2delay); | |
4bf21fa4 BP |
2064 | return 0; |
2065 | } | |
2066 | ||
e54fb9c1 | 2067 | /* is called from insn so there's no need to do all the sanity checks */ |
0a85b6f0 MT |
2068 | static int usbdux_pwm_start(struct comedi_device *dev, |
2069 | struct comedi_subdevice *s) | |
4bf21fa4 BP |
2070 | { |
2071 | int ret, i; | |
cc92fca7 | 2072 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 | 2073 | |
c0e0c26e GKH |
2074 | dev_dbg(&this_usbduxsub->interface->dev, "comedi%d: %s\n", |
2075 | dev->minor, __func__); | |
2076 | ||
4bf21fa4 | 2077 | if (this_usbduxsub->pwm_cmd_running) { |
e54fb9c1 | 2078 | /* already running */ |
4bf21fa4 BP |
2079 | return 0; |
2080 | } | |
2081 | ||
2082 | this_usbduxsub->dux_commands[1] = ((int8_t) this_usbduxsub->pwmDelay); | |
4274ea02 GKH |
2083 | ret = send_dux_commands(this_usbduxsub, SENDPWMON); |
2084 | if (ret < 0) | |
4bf21fa4 | 2085 | return ret; |
4274ea02 | 2086 | |
e54fb9c1 | 2087 | /* initalise the buffer */ |
4274ea02 | 2088 | for (i = 0; i < this_usbduxsub->sizePwmBuf; i++) |
4bf21fa4 | 2089 | ((char *)(this_usbduxsub->urbPwm->transfer_buffer))[i] = 0; |
4bf21fa4 BP |
2090 | |
2091 | this_usbduxsub->pwm_cmd_running = 1; | |
2092 | ret = usbduxsub_submit_PwmURBs(this_usbduxsub); | |
2093 | if (ret < 0) { | |
2094 | this_usbduxsub->pwm_cmd_running = 0; | |
2095 | return ret; | |
2096 | } | |
2097 | return 0; | |
2098 | } | |
2099 | ||
e54fb9c1 | 2100 | /* generates the bit pattern for PWM with the optional sign bit */ |
0a85b6f0 MT |
2101 | static int usbdux_pwm_pattern(struct comedi_device *dev, |
2102 | struct comedi_subdevice *s, int channel, | |
2103 | unsigned int value, unsigned int sign) | |
4bf21fa4 | 2104 | { |
cc92fca7 | 2105 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 BP |
2106 | int i, szbuf; |
2107 | char *pBuf; | |
4274ea02 GKH |
2108 | char pwm_mask; |
2109 | char sgn_mask; | |
2110 | char c; | |
4bf21fa4 | 2111 | |
4274ea02 | 2112 | if (!this_usbduxsub) |
4bf21fa4 | 2113 | return -EFAULT; |
4274ea02 | 2114 | |
e54fb9c1 | 2115 | /* this is the DIO bit which carries the PWM data */ |
4bf21fa4 | 2116 | pwm_mask = (1 << channel); |
e54fb9c1 | 2117 | /* this is the DIO bit which carries the optional direction bit */ |
4bf21fa4 | 2118 | sgn_mask = (16 << channel); |
e54fb9c1 GKH |
2119 | /* this is the buffer which will be filled with the with bit */ |
2120 | /* pattern for one period */ | |
4bf21fa4 BP |
2121 | szbuf = this_usbduxsub->sizePwmBuf; |
2122 | pBuf = (char *)(this_usbduxsub->urbPwm->transfer_buffer); | |
2123 | for (i = 0; i < szbuf; i++) { | |
2124 | c = *pBuf; | |
e54fb9c1 | 2125 | /* reset bits */ |
4bf21fa4 | 2126 | c = c & (~pwm_mask); |
e54fb9c1 | 2127 | /* set the bit as long as the index is lower than the value */ |
4bf21fa4 BP |
2128 | if (i < value) |
2129 | c = c | pwm_mask; | |
e54fb9c1 | 2130 | /* set the optional sign bit for a relay */ |
4bf21fa4 | 2131 | if (!sign) { |
e54fb9c1 | 2132 | /* positive value */ |
4bf21fa4 BP |
2133 | c = c & (~sgn_mask); |
2134 | } else { | |
e54fb9c1 | 2135 | /* negative value */ |
4bf21fa4 BP |
2136 | c = c | sgn_mask; |
2137 | } | |
2138 | *(pBuf++) = c; | |
2139 | } | |
2140 | return 1; | |
2141 | } | |
2142 | ||
0a85b6f0 MT |
2143 | static int usbdux_pwm_write(struct comedi_device *dev, |
2144 | struct comedi_subdevice *s, | |
90035c08 | 2145 | struct comedi_insn *insn, unsigned int *data) |
4bf21fa4 | 2146 | { |
cc92fca7 | 2147 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 | 2148 | |
4274ea02 | 2149 | if (!this_usbduxsub) |
4bf21fa4 | 2150 | return -EFAULT; |
4bf21fa4 | 2151 | |
4274ea02 GKH |
2152 | if ((insn->n) != 1) { |
2153 | /* | |
2154 | * doesn't make sense to have more than one value here because | |
2155 | * it would just overwrite the PWM buffer a couple of times | |
2156 | */ | |
4bf21fa4 BP |
2157 | return -EINVAL; |
2158 | } | |
2159 | ||
4274ea02 GKH |
2160 | /* |
2161 | * the sign is set via a special INSN only, this gives us 8 bits for | |
2162 | * normal operation | |
2163 | * relay sign 0 by default | |
2164 | */ | |
0a85b6f0 | 2165 | return usbdux_pwm_pattern(dev, s, CR_CHAN(insn->chanspec), data[0], 0); |
4bf21fa4 BP |
2166 | } |
2167 | ||
0a85b6f0 MT |
2168 | static int usbdux_pwm_read(struct comedi_device *x1, |
2169 | struct comedi_subdevice *x2, struct comedi_insn *x3, | |
2170 | unsigned int *x4) | |
4bf21fa4 | 2171 | { |
8fa07567 | 2172 | /* not needed */ |
4bf21fa4 BP |
2173 | return -EINVAL; |
2174 | }; | |
2175 | ||
8fa07567 | 2176 | /* switches on/off PWM */ |
0a85b6f0 MT |
2177 | static int usbdux_pwm_config(struct comedi_device *dev, |
2178 | struct comedi_subdevice *s, | |
90035c08 | 2179 | struct comedi_insn *insn, unsigned int *data) |
4bf21fa4 | 2180 | { |
cc92fca7 | 2181 | struct usbduxsub *this_usbduxsub = dev->private; |
4bf21fa4 BP |
2182 | switch (data[0]) { |
2183 | case INSN_CONFIG_ARM: | |
8fa07567 | 2184 | /* switch it on */ |
c0e0c26e GKH |
2185 | dev_dbg(&this_usbduxsub->interface->dev, |
2186 | "comedi%d: %s: pwm on\n", dev->minor, __func__); | |
8fa07567 GKH |
2187 | /* |
2188 | * if not zero the PWM is limited to a certain time which is | |
2189 | * not supported here | |
2190 | */ | |
2191 | if (data[1] != 0) | |
4bf21fa4 | 2192 | return -EINVAL; |
4bf21fa4 BP |
2193 | return usbdux_pwm_start(dev, s); |
2194 | case INSN_CONFIG_DISARM: | |
c0e0c26e GKH |
2195 | dev_dbg(&this_usbduxsub->interface->dev, |
2196 | "comedi%d: %s: pwm off\n", dev->minor, __func__); | |
4bf21fa4 BP |
2197 | return usbdux_pwm_cancel(dev, s); |
2198 | case INSN_CONFIG_GET_PWM_STATUS: | |
8fa07567 GKH |
2199 | /* |
2200 | * to check if the USB transmission has failed or in case PWM | |
2201 | * was limited to n cycles to check if it has terminated | |
2202 | */ | |
4bf21fa4 BP |
2203 | data[1] = this_usbduxsub->pwm_cmd_running; |
2204 | return 0; | |
2205 | case INSN_CONFIG_PWM_SET_PERIOD: | |
c0e0c26e GKH |
2206 | dev_dbg(&this_usbduxsub->interface->dev, |
2207 | "comedi%d: %s: setting period\n", dev->minor, __func__); | |
8fa07567 | 2208 | return usbdux_pwm_period(dev, s, data[1]); |
4bf21fa4 BP |
2209 | case INSN_CONFIG_PWM_GET_PERIOD: |
2210 | data[1] = this_usbduxsub->pwmPeriod; | |
2211 | return 0; | |
2212 | case INSN_CONFIG_PWM_SET_H_BRIDGE: | |
8fa07567 GKH |
2213 | /* value in the first byte and the sign in the second for a |
2214 | relay */ | |
4bf21fa4 | 2215 | return usbdux_pwm_pattern(dev, s, |
8fa07567 GKH |
2216 | /* the channel number */ |
2217 | CR_CHAN(insn->chanspec), | |
2218 | /* actual PWM data */ | |
2219 | data[1], | |
2220 | /* just a sign */ | |
2221 | (data[2] != 0)); | |
4bf21fa4 | 2222 | case INSN_CONFIG_PWM_GET_H_BRIDGE: |
8fa07567 | 2223 | /* values are not kept in this driver, nothing to return here */ |
4bf21fa4 BP |
2224 | return -EINVAL; |
2225 | } | |
2226 | return -EINVAL; | |
2227 | } | |
2228 | ||
8fa07567 GKH |
2229 | /* end of PWM */ |
2230 | /*****************************************************************/ | |
4bf21fa4 | 2231 | |
cc92fca7 | 2232 | static void tidy_up(struct usbduxsub *usbduxsub_tmp) |
4bf21fa4 BP |
2233 | { |
2234 | int i; | |
2235 | ||
8fa07567 | 2236 | if (!usbduxsub_tmp) |
4bf21fa4 | 2237 | return; |
c0e0c26e | 2238 | dev_dbg(&usbduxsub_tmp->interface->dev, "comedi_: tiding up\n"); |
8fa07567 GKH |
2239 | |
2240 | /* shows the usb subsystem that the driver is down */ | |
4398ecfa | 2241 | if (usbduxsub_tmp->interface) |
4bf21fa4 | 2242 | usb_set_intfdata(usbduxsub_tmp->interface, NULL); |
4bf21fa4 BP |
2243 | |
2244 | usbduxsub_tmp->probed = 0; | |
2245 | ||
2246 | if (usbduxsub_tmp->urbIn) { | |
2247 | if (usbduxsub_tmp->ai_cmd_running) { | |
2248 | usbduxsub_tmp->ai_cmd_running = 0; | |
2249 | usbduxsub_unlink_InURBs(usbduxsub_tmp); | |
2250 | } | |
2251 | for (i = 0; i < usbduxsub_tmp->numOfInBuffers; i++) { | |
4274ea02 GKH |
2252 | kfree(usbduxsub_tmp->urbIn[i]->transfer_buffer); |
2253 | usbduxsub_tmp->urbIn[i]->transfer_buffer = NULL; | |
2254 | usb_kill_urb(usbduxsub_tmp->urbIn[i]); | |
2255 | usb_free_urb(usbduxsub_tmp->urbIn[i]); | |
2256 | usbduxsub_tmp->urbIn[i] = NULL; | |
4bf21fa4 BP |
2257 | } |
2258 | kfree(usbduxsub_tmp->urbIn); | |
2259 | usbduxsub_tmp->urbIn = NULL; | |
2260 | } | |
2261 | if (usbduxsub_tmp->urbOut) { | |
2262 | if (usbduxsub_tmp->ao_cmd_running) { | |
2263 | usbduxsub_tmp->ao_cmd_running = 0; | |
2264 | usbduxsub_unlink_OutURBs(usbduxsub_tmp); | |
2265 | } | |
2266 | for (i = 0; i < usbduxsub_tmp->numOfOutBuffers; i++) { | |
2267 | if (usbduxsub_tmp->urbOut[i]->transfer_buffer) { | |
0a85b6f0 MT |
2268 | kfree(usbduxsub_tmp-> |
2269 | urbOut[i]->transfer_buffer); | |
4bf21fa4 | 2270 | usbduxsub_tmp->urbOut[i]->transfer_buffer = |
0a85b6f0 | 2271 | NULL; |
4bf21fa4 BP |
2272 | } |
2273 | if (usbduxsub_tmp->urbOut[i]) { | |
4bf21fa4 | 2274 | usb_kill_urb(usbduxsub_tmp->urbOut[i]); |
4bf21fa4 BP |
2275 | usb_free_urb(usbduxsub_tmp->urbOut[i]); |
2276 | usbduxsub_tmp->urbOut[i] = NULL; | |
2277 | } | |
2278 | } | |
2279 | kfree(usbduxsub_tmp->urbOut); | |
2280 | usbduxsub_tmp->urbOut = NULL; | |
2281 | } | |
2282 | if (usbduxsub_tmp->urbPwm) { | |
2283 | if (usbduxsub_tmp->pwm_cmd_running) { | |
2284 | usbduxsub_tmp->pwm_cmd_running = 0; | |
2285 | usbduxsub_unlink_PwmURBs(usbduxsub_tmp); | |
2286 | } | |
8fa07567 GKH |
2287 | kfree(usbduxsub_tmp->urbPwm->transfer_buffer); |
2288 | usbduxsub_tmp->urbPwm->transfer_buffer = NULL; | |
4bf21fa4 | 2289 | usb_kill_urb(usbduxsub_tmp->urbPwm); |
4bf21fa4 BP |
2290 | usb_free_urb(usbduxsub_tmp->urbPwm); |
2291 | usbduxsub_tmp->urbPwm = NULL; | |
2292 | } | |
8fa07567 GKH |
2293 | kfree(usbduxsub_tmp->inBuffer); |
2294 | usbduxsub_tmp->inBuffer = NULL; | |
2295 | kfree(usbduxsub_tmp->insnBuffer); | |
2296 | usbduxsub_tmp->insnBuffer = NULL; | |
2297 | kfree(usbduxsub_tmp->inBuffer); | |
2298 | usbduxsub_tmp->inBuffer = NULL; | |
2299 | kfree(usbduxsub_tmp->dac_commands); | |
2300 | usbduxsub_tmp->dac_commands = NULL; | |
2301 | kfree(usbduxsub_tmp->dux_commands); | |
2302 | usbduxsub_tmp->dux_commands = NULL; | |
4bf21fa4 BP |
2303 | usbduxsub_tmp->ai_cmd_running = 0; |
2304 | usbduxsub_tmp->ao_cmd_running = 0; | |
2305 | usbduxsub_tmp->pwm_cmd_running = 0; | |
2306 | } | |
2307 | ||
6742c0af BP |
2308 | static void usbdux_firmware_request_complete_handler(const struct firmware *fw, |
2309 | void *context) | |
2310 | { | |
2311 | struct usbduxsub *usbduxsub_tmp = context; | |
2312 | struct usb_device *usbdev = usbduxsub_tmp->usbdev; | |
2313 | int ret; | |
2314 | ||
2315 | if (fw == NULL) { | |
2316 | dev_err(&usbdev->dev, | |
2317 | "Firmware complete handler without firmware!\n"); | |
2318 | return; | |
2319 | } | |
2320 | ||
2321 | /* | |
2322 | * we need to upload the firmware here because fw will be | |
2323 | * freed once we've left this function | |
2324 | */ | |
81874ff7 | 2325 | ret = firmwareUpload(usbduxsub_tmp, fw->data, fw->size); |
6742c0af BP |
2326 | |
2327 | if (ret) { | |
2328 | dev_err(&usbdev->dev, | |
0a85b6f0 | 2329 | "Could not upload firmware (err=%d)\n", ret); |
6742c0af BP |
2330 | return; |
2331 | } | |
2332 | comedi_usb_auto_config(usbdev, BOARDNAME); | |
2333 | } | |
2334 | ||
e54fb9c1 | 2335 | /* allocate memory for the urbs and initialise them */ |
4bf21fa4 | 2336 | static int usbduxsub_probe(struct usb_interface *uinterf, |
c0e0c26e | 2337 | const struct usb_device_id *id) |
4bf21fa4 BP |
2338 | { |
2339 | struct usb_device *udev = interface_to_usbdev(uinterf); | |
c0e0c26e | 2340 | struct device *dev = &uinterf->dev; |
4bf21fa4 BP |
2341 | int i; |
2342 | int index; | |
6742c0af | 2343 | int ret; |
4bf21fa4 | 2344 | |
c0e0c26e GKH |
2345 | dev_dbg(dev, "comedi_: usbdux_: " |
2346 | "finding a free structure for the usb-device\n"); | |
2347 | ||
4bf21fa4 | 2348 | down(&start_stop_sem); |
e54fb9c1 | 2349 | /* look for a free place in the usbdux array */ |
4bf21fa4 BP |
2350 | index = -1; |
2351 | for (i = 0; i < NUMUSBDUX; i++) { | |
2352 | if (!(usbduxsub[i].probed)) { | |
2353 | index = i; | |
2354 | break; | |
2355 | } | |
2356 | } | |
2357 | ||
e54fb9c1 | 2358 | /* no more space */ |
4bf21fa4 | 2359 | if (index == -1) { |
c0e0c26e | 2360 | dev_err(dev, "Too many usbdux-devices connected.\n"); |
4bf21fa4 | 2361 | up(&start_stop_sem); |
4aa3a823 | 2362 | return -EMFILE; |
4bf21fa4 | 2363 | } |
c0e0c26e GKH |
2364 | dev_dbg(dev, "comedi_: usbdux: " |
2365 | "usbduxsub[%d] is ready to connect to comedi.\n", index); | |
4bf21fa4 BP |
2366 | |
2367 | init_MUTEX(&(usbduxsub[index].sem)); | |
e54fb9c1 | 2368 | /* save a pointer to the usb device */ |
4bf21fa4 BP |
2369 | usbduxsub[index].usbdev = udev; |
2370 | ||
e54fb9c1 | 2371 | /* 2.6: save the interface itself */ |
4bf21fa4 | 2372 | usbduxsub[index].interface = uinterf; |
e54fb9c1 | 2373 | /* get the interface number from the interface */ |
4bf21fa4 | 2374 | usbduxsub[index].ifnum = uinterf->altsetting->desc.bInterfaceNumber; |
e54fb9c1 GKH |
2375 | /* hand the private data over to the usb subsystem */ |
2376 | /* will be needed for disconnect */ | |
4bf21fa4 | 2377 | usb_set_intfdata(uinterf, &(usbduxsub[index])); |
4bf21fa4 | 2378 | |
c0e0c26e GKH |
2379 | dev_dbg(dev, "comedi_: usbdux: ifnum=%d\n", usbduxsub[index].ifnum); |
2380 | ||
e54fb9c1 | 2381 | /* test if it is high speed (USB 2.0) */ |
4bf21fa4 | 2382 | usbduxsub[index].high_speed = |
0a85b6f0 | 2383 | (usbduxsub[index].usbdev->speed == USB_SPEED_HIGH); |
4bf21fa4 | 2384 | |
e54fb9c1 | 2385 | /* create space for the commands of the DA converter */ |
4bf21fa4 BP |
2386 | usbduxsub[index].dac_commands = kzalloc(NUMOUTCHANNELS, GFP_KERNEL); |
2387 | if (!usbduxsub[index].dac_commands) { | |
c0e0c26e GKH |
2388 | dev_err(dev, "comedi_: usbdux: " |
2389 | "error alloc space for dac commands\n"); | |
4bf21fa4 BP |
2390 | tidy_up(&(usbduxsub[index])); |
2391 | up(&start_stop_sem); | |
4aa3a823 | 2392 | return -ENOMEM; |
4bf21fa4 | 2393 | } |
e54fb9c1 | 2394 | /* create space for the commands going to the usb device */ |
4bf21fa4 BP |
2395 | usbduxsub[index].dux_commands = kzalloc(SIZEOFDUXBUFFER, GFP_KERNEL); |
2396 | if (!usbduxsub[index].dux_commands) { | |
c0e0c26e GKH |
2397 | dev_err(dev, "comedi_: usbdux: " |
2398 | "error alloc space for dac commands\n"); | |
4bf21fa4 BP |
2399 | tidy_up(&(usbduxsub[index])); |
2400 | up(&start_stop_sem); | |
4aa3a823 | 2401 | return -ENOMEM; |
4bf21fa4 | 2402 | } |
e54fb9c1 | 2403 | /* create space for the in buffer and set it to zero */ |
4bf21fa4 BP |
2404 | usbduxsub[index].inBuffer = kzalloc(SIZEINBUF, GFP_KERNEL); |
2405 | if (!(usbduxsub[index].inBuffer)) { | |
c0e0c26e GKH |
2406 | dev_err(dev, "comedi_: usbdux: " |
2407 | "could not alloc space for inBuffer\n"); | |
4bf21fa4 BP |
2408 | tidy_up(&(usbduxsub[index])); |
2409 | up(&start_stop_sem); | |
4aa3a823 | 2410 | return -ENOMEM; |
4bf21fa4 | 2411 | } |
e54fb9c1 | 2412 | /* create space of the instruction buffer */ |
4bf21fa4 BP |
2413 | usbduxsub[index].insnBuffer = kzalloc(SIZEINSNBUF, GFP_KERNEL); |
2414 | if (!(usbduxsub[index].insnBuffer)) { | |
c0e0c26e GKH |
2415 | dev_err(dev, "comedi_: usbdux: " |
2416 | "could not alloc space for insnBuffer\n"); | |
4bf21fa4 BP |
2417 | tidy_up(&(usbduxsub[index])); |
2418 | up(&start_stop_sem); | |
4aa3a823 | 2419 | return -ENOMEM; |
4bf21fa4 | 2420 | } |
e54fb9c1 | 2421 | /* create space for the outbuffer */ |
4bf21fa4 BP |
2422 | usbduxsub[index].outBuffer = kzalloc(SIZEOUTBUF, GFP_KERNEL); |
2423 | if (!(usbduxsub[index].outBuffer)) { | |
c0e0c26e GKH |
2424 | dev_err(dev, "comedi_: usbdux: " |
2425 | "could not alloc space for outBuffer\n"); | |
4bf21fa4 BP |
2426 | tidy_up(&(usbduxsub[index])); |
2427 | up(&start_stop_sem); | |
4aa3a823 | 2428 | return -ENOMEM; |
4bf21fa4 | 2429 | } |
8fa07567 | 2430 | /* setting to alternate setting 3: enabling iso ep and bulk ep. */ |
4bf21fa4 | 2431 | i = usb_set_interface(usbduxsub[index].usbdev, |
8fa07567 | 2432 | usbduxsub[index].ifnum, 3); |
4bf21fa4 | 2433 | if (i < 0) { |
c0e0c26e GKH |
2434 | dev_err(dev, "comedi_: usbdux%d: " |
2435 | "could not set alternate setting 3 in high speed.\n", | |
2436 | index); | |
4bf21fa4 BP |
2437 | tidy_up(&(usbduxsub[index])); |
2438 | up(&start_stop_sem); | |
4aa3a823 | 2439 | return -ENODEV; |
4bf21fa4 | 2440 | } |
8fa07567 | 2441 | if (usbduxsub[index].high_speed) |
4bf21fa4 | 2442 | usbduxsub[index].numOfInBuffers = NUMOFINBUFFERSHIGH; |
8fa07567 | 2443 | else |
4bf21fa4 | 2444 | usbduxsub[index].numOfInBuffers = NUMOFINBUFFERSFULL; |
8fa07567 | 2445 | |
4bf21fa4 | 2446 | usbduxsub[index].urbIn = |
0a85b6f0 MT |
2447 | kzalloc(sizeof(struct urb *) * usbduxsub[index].numOfInBuffers, |
2448 | GFP_KERNEL); | |
4bf21fa4 | 2449 | if (!(usbduxsub[index].urbIn)) { |
c0e0c26e | 2450 | dev_err(dev, "comedi_: usbdux: Could not alloc. urbIn array\n"); |
4bf21fa4 BP |
2451 | tidy_up(&(usbduxsub[index])); |
2452 | up(&start_stop_sem); | |
4aa3a823 | 2453 | return -ENOMEM; |
4bf21fa4 BP |
2454 | } |
2455 | for (i = 0; i < usbduxsub[index].numOfInBuffers; i++) { | |
e54fb9c1 | 2456 | /* one frame: 1ms */ |
4aa3a823 | 2457 | usbduxsub[index].urbIn[i] = usb_alloc_urb(1, GFP_KERNEL); |
4bf21fa4 | 2458 | if (usbduxsub[index].urbIn[i] == NULL) { |
c0e0c26e GKH |
2459 | dev_err(dev, "comedi_: usbdux%d: " |
2460 | "Could not alloc. urb(%d)\n", index, i); | |
4bf21fa4 BP |
2461 | tidy_up(&(usbduxsub[index])); |
2462 | up(&start_stop_sem); | |
4aa3a823 | 2463 | return -ENOMEM; |
4bf21fa4 BP |
2464 | } |
2465 | usbduxsub[index].urbIn[i]->dev = usbduxsub[index].usbdev; | |
e54fb9c1 GKH |
2466 | /* will be filled later with a pointer to the comedi-device */ |
2467 | /* and ONLY then the urb should be submitted */ | |
4bf21fa4 BP |
2468 | usbduxsub[index].urbIn[i]->context = NULL; |
2469 | usbduxsub[index].urbIn[i]->pipe = | |
0a85b6f0 | 2470 | usb_rcvisocpipe(usbduxsub[index].usbdev, ISOINEP); |
4bf21fa4 BP |
2471 | usbduxsub[index].urbIn[i]->transfer_flags = URB_ISO_ASAP; |
2472 | usbduxsub[index].urbIn[i]->transfer_buffer = | |
0a85b6f0 | 2473 | kzalloc(SIZEINBUF, GFP_KERNEL); |
4bf21fa4 | 2474 | if (!(usbduxsub[index].urbIn[i]->transfer_buffer)) { |
c0e0c26e GKH |
2475 | dev_err(dev, "comedi_: usbdux%d: " |
2476 | "could not alloc. transb.\n", index); | |
4bf21fa4 BP |
2477 | tidy_up(&(usbduxsub[index])); |
2478 | up(&start_stop_sem); | |
4aa3a823 | 2479 | return -ENOMEM; |
4bf21fa4 BP |
2480 | } |
2481 | usbduxsub[index].urbIn[i]->complete = usbduxsub_ai_IsocIrq; | |
2482 | usbduxsub[index].urbIn[i]->number_of_packets = 1; | |
2483 | usbduxsub[index].urbIn[i]->transfer_buffer_length = SIZEINBUF; | |
2484 | usbduxsub[index].urbIn[i]->iso_frame_desc[0].offset = 0; | |
2485 | usbduxsub[index].urbIn[i]->iso_frame_desc[0].length = SIZEINBUF; | |
2486 | } | |
2487 | ||
8fa07567 GKH |
2488 | /* out */ |
2489 | if (usbduxsub[index].high_speed) | |
4bf21fa4 | 2490 | usbduxsub[index].numOfOutBuffers = NUMOFOUTBUFFERSHIGH; |
8fa07567 | 2491 | else |
4bf21fa4 | 2492 | usbduxsub[index].numOfOutBuffers = NUMOFOUTBUFFERSFULL; |
8fa07567 | 2493 | |
4bf21fa4 | 2494 | usbduxsub[index].urbOut = |
0a85b6f0 MT |
2495 | kzalloc(sizeof(struct urb *) * usbduxsub[index].numOfOutBuffers, |
2496 | GFP_KERNEL); | |
4bf21fa4 | 2497 | if (!(usbduxsub[index].urbOut)) { |
c0e0c26e GKH |
2498 | dev_err(dev, "comedi_: usbdux: " |
2499 | "Could not alloc. urbOut array\n"); | |
4bf21fa4 BP |
2500 | tidy_up(&(usbduxsub[index])); |
2501 | up(&start_stop_sem); | |
4aa3a823 | 2502 | return -ENOMEM; |
4bf21fa4 BP |
2503 | } |
2504 | for (i = 0; i < usbduxsub[index].numOfOutBuffers; i++) { | |
e54fb9c1 | 2505 | /* one frame: 1ms */ |
4aa3a823 | 2506 | usbduxsub[index].urbOut[i] = usb_alloc_urb(1, GFP_KERNEL); |
4bf21fa4 | 2507 | if (usbduxsub[index].urbOut[i] == NULL) { |
c0e0c26e GKH |
2508 | dev_err(dev, "comedi_: usbdux%d: " |
2509 | "Could not alloc. urb(%d)\n", index, i); | |
4bf21fa4 BP |
2510 | tidy_up(&(usbduxsub[index])); |
2511 | up(&start_stop_sem); | |
4aa3a823 | 2512 | return -ENOMEM; |
4bf21fa4 BP |
2513 | } |
2514 | usbduxsub[index].urbOut[i]->dev = usbduxsub[index].usbdev; | |
e54fb9c1 GKH |
2515 | /* will be filled later with a pointer to the comedi-device */ |
2516 | /* and ONLY then the urb should be submitted */ | |
4bf21fa4 BP |
2517 | usbduxsub[index].urbOut[i]->context = NULL; |
2518 | usbduxsub[index].urbOut[i]->pipe = | |
0a85b6f0 | 2519 | usb_sndisocpipe(usbduxsub[index].usbdev, ISOOUTEP); |
4bf21fa4 BP |
2520 | usbduxsub[index].urbOut[i]->transfer_flags = URB_ISO_ASAP; |
2521 | usbduxsub[index].urbOut[i]->transfer_buffer = | |
0a85b6f0 | 2522 | kzalloc(SIZEOUTBUF, GFP_KERNEL); |
4bf21fa4 | 2523 | if (!(usbduxsub[index].urbOut[i]->transfer_buffer)) { |
c0e0c26e GKH |
2524 | dev_err(dev, "comedi_: usbdux%d: " |
2525 | "could not alloc. transb.\n", index); | |
4bf21fa4 BP |
2526 | tidy_up(&(usbduxsub[index])); |
2527 | up(&start_stop_sem); | |
4aa3a823 | 2528 | return -ENOMEM; |
4bf21fa4 BP |
2529 | } |
2530 | usbduxsub[index].urbOut[i]->complete = usbduxsub_ao_IsocIrq; | |
2531 | usbduxsub[index].urbOut[i]->number_of_packets = 1; | |
2532 | usbduxsub[index].urbOut[i]->transfer_buffer_length = SIZEOUTBUF; | |
2533 | usbduxsub[index].urbOut[i]->iso_frame_desc[0].offset = 0; | |
2534 | usbduxsub[index].urbOut[i]->iso_frame_desc[0].length = | |
0a85b6f0 | 2535 | SIZEOUTBUF; |
4bf21fa4 | 2536 | if (usbduxsub[index].high_speed) { |
e54fb9c1 | 2537 | /* uframes */ |
4bf21fa4 BP |
2538 | usbduxsub[index].urbOut[i]->interval = 8; |
2539 | } else { | |
e54fb9c1 | 2540 | /* frames */ |
4bf21fa4 BP |
2541 | usbduxsub[index].urbOut[i]->interval = 1; |
2542 | } | |
2543 | } | |
2544 | ||
e54fb9c1 | 2545 | /* pwm */ |
4bf21fa4 | 2546 | if (usbduxsub[index].high_speed) { |
4274ea02 GKH |
2547 | /* max bulk ep size in high speed */ |
2548 | usbduxsub[index].sizePwmBuf = 512; | |
4aa3a823 | 2549 | usbduxsub[index].urbPwm = usb_alloc_urb(0, GFP_KERNEL); |
4bf21fa4 | 2550 | if (usbduxsub[index].urbPwm == NULL) { |
c0e0c26e GKH |
2551 | dev_err(dev, "comedi_: usbdux%d: " |
2552 | "Could not alloc. pwm urb\n", index); | |
4bf21fa4 BP |
2553 | tidy_up(&(usbduxsub[index])); |
2554 | up(&start_stop_sem); | |
4aa3a823 | 2555 | return -ENOMEM; |
4bf21fa4 BP |
2556 | } |
2557 | usbduxsub[index].urbPwm->transfer_buffer = | |
0a85b6f0 | 2558 | kzalloc(usbduxsub[index].sizePwmBuf, GFP_KERNEL); |
4bf21fa4 | 2559 | if (!(usbduxsub[index].urbPwm->transfer_buffer)) { |
c0e0c26e GKH |
2560 | dev_err(dev, "comedi_: usbdux%d: " |
2561 | "could not alloc. transb. for pwm\n", index); | |
4bf21fa4 BP |
2562 | tidy_up(&(usbduxsub[index])); |
2563 | up(&start_stop_sem); | |
4aa3a823 | 2564 | return -ENOMEM; |
4bf21fa4 BP |
2565 | } |
2566 | } else { | |
2567 | usbduxsub[index].urbPwm = NULL; | |
2568 | usbduxsub[index].sizePwmBuf = 0; | |
2569 | } | |
2570 | ||
2571 | usbduxsub[index].ai_cmd_running = 0; | |
2572 | usbduxsub[index].ao_cmd_running = 0; | |
2573 | usbduxsub[index].pwm_cmd_running = 0; | |
2574 | ||
e54fb9c1 | 2575 | /* we've reached the bottom of the function */ |
4bf21fa4 BP |
2576 | usbduxsub[index].probed = 1; |
2577 | up(&start_stop_sem); | |
6742c0af BP |
2578 | |
2579 | ret = request_firmware_nowait(THIS_MODULE, | |
2580 | FW_ACTION_HOTPLUG, | |
81874ff7 | 2581 | "usbdux_firmware.bin", |
6742c0af BP |
2582 | &udev->dev, |
2583 | usbduxsub + index, | |
2584 | usbdux_firmware_request_complete_handler); | |
2585 | ||
2586 | if (ret) { | |
2587 | dev_err(dev, "Could not load firmware (err=%d)\n", ret); | |
2588 | return ret; | |
2589 | } | |
2590 | ||
c0e0c26e GKH |
2591 | dev_info(dev, "comedi_: usbdux%d " |
2592 | "has been successfully initialised.\n", index); | |
e54fb9c1 | 2593 | /* success */ |
4bf21fa4 | 2594 | return 0; |
4bf21fa4 BP |
2595 | } |
2596 | ||
4bf21fa4 BP |
2597 | static void usbduxsub_disconnect(struct usb_interface *intf) |
2598 | { | |
cc92fca7 | 2599 | struct usbduxsub *usbduxsub_tmp = usb_get_intfdata(intf); |
4bf21fa4 | 2600 | struct usb_device *udev = interface_to_usbdev(intf); |
4398ecfa | 2601 | |
4bf21fa4 | 2602 | if (!usbduxsub_tmp) { |
c0e0c26e GKH |
2603 | dev_err(&intf->dev, |
2604 | "comedi_: disconnect called with null pointer.\n"); | |
4bf21fa4 BP |
2605 | return; |
2606 | } | |
2607 | if (usbduxsub_tmp->usbdev != udev) { | |
0a85b6f0 | 2608 | dev_err(&intf->dev, "comedi_: BUG! called with wrong ptr!!!\n"); |
4bf21fa4 BP |
2609 | return; |
2610 | } | |
6742c0af | 2611 | comedi_usb_auto_unconfig(udev); |
4bf21fa4 BP |
2612 | down(&start_stop_sem); |
2613 | down(&usbduxsub_tmp->sem); | |
2614 | tidy_up(usbduxsub_tmp); | |
2615 | up(&usbduxsub_tmp->sem); | |
2616 | up(&start_stop_sem); | |
c0e0c26e | 2617 | dev_dbg(&intf->dev, "comedi_: disconnected from the usb\n"); |
4bf21fa4 BP |
2618 | } |
2619 | ||
8fa07567 | 2620 | /* is called when comedi-config is called */ |
0707bb04 | 2621 | static int usbdux_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
4bf21fa4 BP |
2622 | { |
2623 | int ret; | |
2624 | int index; | |
2625 | int i; | |
cc92fca7 | 2626 | struct usbduxsub *udev; |
c0e0c26e | 2627 | |
34c43922 | 2628 | struct comedi_subdevice *s = NULL; |
4bf21fa4 BP |
2629 | dev->private = NULL; |
2630 | ||
2631 | down(&start_stop_sem); | |
4274ea02 GKH |
2632 | /* find a valid device which has been detected by the probe function of |
2633 | * the usb */ | |
4bf21fa4 BP |
2634 | index = -1; |
2635 | for (i = 0; i < NUMUSBDUX; i++) { | |
2636 | if ((usbduxsub[i].probed) && (!usbduxsub[i].attached)) { | |
2637 | index = i; | |
2638 | break; | |
2639 | } | |
2640 | } | |
2641 | ||
2642 | if (index < 0) { | |
c0e0c26e GKH |
2643 | printk(KERN_ERR "comedi%d: usbdux: error: attach failed, no " |
2644 | "usbdux devs connected to the usb bus.\n", dev->minor); | |
4bf21fa4 BP |
2645 | up(&start_stop_sem); |
2646 | return -ENODEV; | |
2647 | } | |
2648 | ||
c0e0c26e GKH |
2649 | udev = &usbduxsub[index]; |
2650 | down(&udev->sem); | |
e54fb9c1 | 2651 | /* pointer back to the corresponding comedi device */ |
c0e0c26e | 2652 | udev->comedidev = dev; |
4bf21fa4 | 2653 | |
e54fb9c1 | 2654 | /* trying to upload the firmware into the chip */ |
4bf21fa4 | 2655 | if (comedi_aux_data(it->options, 0) && |
0a85b6f0 | 2656 | it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]) { |
81874ff7 BP |
2657 | firmwareUpload(udev, comedi_aux_data(it->options, 0), |
2658 | it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]); | |
4bf21fa4 BP |
2659 | } |
2660 | ||
2661 | dev->board_name = BOARDNAME; | |
2662 | ||
2663 | /* set number of subdevices */ | |
c0e0c26e | 2664 | if (udev->high_speed) { |
e54fb9c1 | 2665 | /* with pwm */ |
4bf21fa4 BP |
2666 | dev->n_subdevices = 5; |
2667 | } else { | |
e54fb9c1 | 2668 | /* without pwm */ |
4bf21fa4 BP |
2669 | dev->n_subdevices = 4; |
2670 | } | |
2671 | ||
e54fb9c1 | 2672 | /* allocate space for the subdevices */ |
4274ea02 GKH |
2673 | ret = alloc_subdevices(dev, dev->n_subdevices); |
2674 | if (ret < 0) { | |
c0e0c26e GKH |
2675 | dev_err(&udev->interface->dev, |
2676 | "comedi%d: error alloc space for subdev\n", dev->minor); | |
4bf21fa4 BP |
2677 | up(&start_stop_sem); |
2678 | return ret; | |
2679 | } | |
2680 | ||
c0e0c26e | 2681 | dev_info(&udev->interface->dev, |
0a85b6f0 MT |
2682 | "comedi%d: usb-device %d is attached to comedi.\n", |
2683 | dev->minor, index); | |
e54fb9c1 | 2684 | /* private structure is also simply the usb-structure */ |
c0e0c26e | 2685 | dev->private = udev; |
4bf21fa4 | 2686 | |
e54fb9c1 | 2687 | /* the first subdevice is the A/D converter */ |
4bf21fa4 | 2688 | s = dev->subdevices + SUBDEV_AD; |
e54fb9c1 GKH |
2689 | /* the URBs get the comedi subdevice */ |
2690 | /* which is responsible for reading */ | |
2691 | /* this is the subdevice which reads data */ | |
4bf21fa4 | 2692 | dev->read_subdev = s; |
e54fb9c1 GKH |
2693 | /* the subdevice receives as private structure the */ |
2694 | /* usb-structure */ | |
4bf21fa4 | 2695 | s->private = NULL; |
e54fb9c1 | 2696 | /* analog input */ |
4bf21fa4 | 2697 | s->type = COMEDI_SUBD_AI; |
e54fb9c1 | 2698 | /* readable and ref is to ground */ |
4bf21fa4 | 2699 | s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_CMD_READ; |
e54fb9c1 | 2700 | /* 8 channels */ |
4bf21fa4 | 2701 | s->n_chan = 8; |
e54fb9c1 | 2702 | /* length of the channellist */ |
4bf21fa4 | 2703 | s->len_chanlist = 8; |
e54fb9c1 | 2704 | /* callback functions */ |
4bf21fa4 BP |
2705 | s->insn_read = usbdux_ai_insn_read; |
2706 | s->do_cmdtest = usbdux_ai_cmdtest; | |
2707 | s->do_cmd = usbdux_ai_cmd; | |
2708 | s->cancel = usbdux_ai_cancel; | |
e54fb9c1 | 2709 | /* max value from the A/D converter (12bit) */ |
4bf21fa4 | 2710 | s->maxdata = 0xfff; |
e54fb9c1 | 2711 | /* range table to convert to physical units */ |
4bf21fa4 | 2712 | s->range_table = (&range_usbdux_ai_range); |
4bf21fa4 | 2713 | |
e54fb9c1 | 2714 | /* analog out */ |
4bf21fa4 | 2715 | s = dev->subdevices + SUBDEV_DA; |
e54fb9c1 | 2716 | /* analog out */ |
4bf21fa4 | 2717 | s->type = COMEDI_SUBD_AO; |
e54fb9c1 | 2718 | /* backward pointer */ |
4bf21fa4 | 2719 | dev->write_subdev = s; |
e54fb9c1 GKH |
2720 | /* the subdevice receives as private structure the */ |
2721 | /* usb-structure */ | |
4bf21fa4 | 2722 | s->private = NULL; |
e54fb9c1 | 2723 | /* are writable */ |
4bf21fa4 | 2724 | s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_CMD_WRITE; |
e54fb9c1 | 2725 | /* 4 channels */ |
4bf21fa4 | 2726 | s->n_chan = 4; |
e54fb9c1 | 2727 | /* length of the channellist */ |
4bf21fa4 | 2728 | s->len_chanlist = 4; |
e54fb9c1 | 2729 | /* 12 bit resolution */ |
4bf21fa4 | 2730 | s->maxdata = 0x0fff; |
e54fb9c1 | 2731 | /* bipolar range */ |
4bf21fa4 | 2732 | s->range_table = (&range_usbdux_ao_range); |
e54fb9c1 | 2733 | /* callback */ |
4bf21fa4 BP |
2734 | s->do_cmdtest = usbdux_ao_cmdtest; |
2735 | s->do_cmd = usbdux_ao_cmd; | |
2736 | s->cancel = usbdux_ao_cancel; | |
2737 | s->insn_read = usbdux_ao_insn_read; | |
2738 | s->insn_write = usbdux_ao_insn_write; | |
2739 | ||
e54fb9c1 | 2740 | /* digital I/O */ |
4bf21fa4 BP |
2741 | s = dev->subdevices + SUBDEV_DIO; |
2742 | s->type = COMEDI_SUBD_DIO; | |
2743 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE; | |
2744 | s->n_chan = 8; | |
2745 | s->maxdata = 1; | |
2746 | s->range_table = (&range_digital); | |
2747 | s->insn_bits = usbdux_dio_insn_bits; | |
2748 | s->insn_config = usbdux_dio_insn_config; | |
e54fb9c1 | 2749 | /* we don't use it */ |
4bf21fa4 BP |
2750 | s->private = NULL; |
2751 | ||
e54fb9c1 | 2752 | /* counter */ |
4bf21fa4 BP |
2753 | s = dev->subdevices + SUBDEV_COUNTER; |
2754 | s->type = COMEDI_SUBD_COUNTER; | |
2755 | s->subdev_flags = SDF_WRITABLE | SDF_READABLE; | |
2756 | s->n_chan = 4; | |
2757 | s->maxdata = 0xFFFF; | |
2758 | s->insn_read = usbdux_counter_read; | |
2759 | s->insn_write = usbdux_counter_write; | |
2760 | s->insn_config = usbdux_counter_config; | |
2761 | ||
c0e0c26e | 2762 | if (udev->high_speed) { |
e54fb9c1 | 2763 | /* timer / pwm */ |
4bf21fa4 BP |
2764 | s = dev->subdevices + SUBDEV_PWM; |
2765 | s->type = COMEDI_SUBD_PWM; | |
2766 | s->subdev_flags = SDF_WRITABLE | SDF_PWM_HBRIDGE; | |
2767 | s->n_chan = 8; | |
e54fb9c1 | 2768 | /* this defines the max duty cycle resolution */ |
c0e0c26e | 2769 | s->maxdata = udev->sizePwmBuf; |
4bf21fa4 BP |
2770 | s->insn_write = usbdux_pwm_write; |
2771 | s->insn_read = usbdux_pwm_read; | |
2772 | s->insn_config = usbdux_pwm_config; | |
2773 | usbdux_pwm_period(dev, s, PWM_DEFAULT_PERIOD); | |
2774 | } | |
e54fb9c1 | 2775 | /* finally decide that it's attached */ |
c0e0c26e | 2776 | udev->attached = 1; |
4bf21fa4 | 2777 | |
c0e0c26e | 2778 | up(&udev->sem); |
4bf21fa4 BP |
2779 | |
2780 | up(&start_stop_sem); | |
2781 | ||
c0e0c26e GKH |
2782 | dev_info(&udev->interface->dev, "comedi%d: attached to usbdux.\n", |
2783 | dev->minor); | |
4bf21fa4 BP |
2784 | |
2785 | return 0; | |
2786 | } | |
2787 | ||
71b5f4f1 | 2788 | static int usbdux_detach(struct comedi_device *dev) |
4bf21fa4 | 2789 | { |
cc92fca7 | 2790 | struct usbduxsub *usbduxsub_tmp; |
4bf21fa4 | 2791 | |
4bf21fa4 | 2792 | if (!dev) { |
c0e0c26e | 2793 | printk(KERN_ERR |
0a85b6f0 | 2794 | "comedi?: usbdux: detach without dev variable...\n"); |
4bf21fa4 BP |
2795 | return -EFAULT; |
2796 | } | |
2797 | ||
2798 | usbduxsub_tmp = dev->private; | |
2799 | if (!usbduxsub_tmp) { | |
c0e0c26e | 2800 | printk(KERN_ERR |
0a85b6f0 | 2801 | "comedi?: usbdux: detach without ptr to usbduxsub[]\n"); |
4bf21fa4 BP |
2802 | return -EFAULT; |
2803 | } | |
2804 | ||
c0e0c26e GKH |
2805 | dev_dbg(&usbduxsub_tmp->interface->dev, "comedi%d: detach usb device\n", |
2806 | dev->minor); | |
2807 | ||
4bf21fa4 | 2808 | down(&usbduxsub_tmp->sem); |
e54fb9c1 GKH |
2809 | /* Don't allow detach to free the private structure */ |
2810 | /* It's one entry of of usbduxsub[] */ | |
4bf21fa4 BP |
2811 | dev->private = NULL; |
2812 | usbduxsub_tmp->attached = 0; | |
2813 | usbduxsub_tmp->comedidev = NULL; | |
c0e0c26e GKH |
2814 | dev_dbg(&usbduxsub_tmp->interface->dev, |
2815 | "comedi%d: detach: successfully removed\n", dev->minor); | |
4bf21fa4 BP |
2816 | up(&usbduxsub_tmp->sem); |
2817 | return 0; | |
2818 | } | |
2819 | ||
2820 | /* main driver struct */ | |
139dfbdf | 2821 | static struct comedi_driver driver_usbdux = { |
0a85b6f0 MT |
2822 | .driver_name = "usbdux", |
2823 | .module = THIS_MODULE, | |
2824 | .attach = usbdux_attach, | |
2825 | .detach = usbdux_detach, | |
4bf21fa4 BP |
2826 | }; |
2827 | ||
8fa07567 | 2828 | /* Table with the USB-devices: just now only testing IDs */ |
4bf21fa4 | 2829 | static struct usb_device_id usbduxsub_table[] = { |
0a85b6f0 MT |
2830 | {USB_DEVICE(0x13d8, 0x0001)}, |
2831 | {USB_DEVICE(0x13d8, 0x0002)}, | |
4bf21fa4 BP |
2832 | {} /* Terminating entry */ |
2833 | }; | |
2834 | ||
2835 | MODULE_DEVICE_TABLE(usb, usbduxsub_table); | |
2836 | ||
8fa07567 | 2837 | /* The usbduxsub-driver */ |
4bf21fa4 | 2838 | static struct usb_driver usbduxsub_driver = { |
0a85b6f0 MT |
2839 | .name = BOARDNAME, |
2840 | .probe = usbduxsub_probe, | |
2841 | .disconnect = usbduxsub_disconnect, | |
2842 | .id_table = usbduxsub_table, | |
4bf21fa4 BP |
2843 | }; |
2844 | ||
e54fb9c1 GKH |
2845 | /* Can't use the nice macro as I have also to initialise the USB */ |
2846 | /* subsystem: */ | |
2847 | /* registering the usb-system _and_ the comedi-driver */ | |
1b9fb14e | 2848 | static int __init init_usbdux(void) |
4bf21fa4 BP |
2849 | { |
2850 | printk(KERN_INFO KBUILD_MODNAME ": " | |
2851 | DRIVER_VERSION ":" DRIVER_DESC "\n"); | |
4bf21fa4 BP |
2852 | usb_register(&usbduxsub_driver); |
2853 | comedi_driver_register(&driver_usbdux); | |
2854 | return 0; | |
2855 | } | |
2856 | ||
e54fb9c1 | 2857 | /* deregistering the comedi driver and the usb-subsystem */ |
1b9fb14e | 2858 | static void __exit exit_usbdux(void) |
4bf21fa4 BP |
2859 | { |
2860 | comedi_driver_unregister(&driver_usbdux); | |
2861 | usb_deregister(&usbduxsub_driver); | |
2862 | } | |
2863 | ||
2864 | module_init(init_usbdux); | |
2865 | module_exit(exit_usbdux); | |
2866 | ||
2867 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
2868 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2869 | MODULE_LICENSE("GPL"); |