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ALSA: USB: adjust for changed 3.8 USB API
[linux-2.6.git] / sound / usb / usx2y / usbusx2yaudio.c
blobb37653247ef4e035b096153253b69ca0fd1e9a8b
1 /*
2 * US-X2Y AUDIO
3 * Copyright (c) 2002-2004 by Karsten Wiese
4 *
5 * based on
6 *
7 * (Tentative) USB Audio Driver for ALSA
8 *
9 * Main and PCM part
10 *
11 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
12 *
13 * Many codes borrowed from audio.c by
14 * Alan Cox (alan@lxorguk.ukuu.org.uk)
15 * Thomas Sailer (sailer@ife.ee.ethz.ch)
16 *
17 *
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2 of the License, or
21 * (at your option) any later version.
22 *
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 */
32
33
34 #include <linux/interrupt.h>
35 #include <linux/slab.h>
36 #include <linux/usb.h>
37 #include <linux/moduleparam.h>
38 #include <sound/core.h>
39 #include <sound/info.h>
40 #include <sound/pcm.h>
41 #include <sound/pcm_params.h>
42 #include "usx2y.h"
43 #include "usbusx2y.h"
44
45 #define USX2Y_NRPACKS 4 /* Default value used for nr of packs per urb.
46 1 to 4 have been tested ok on uhci.
47 To use 3 on ohci, you'd need a patch:
48 look for "0000425-linux-2.6.9-rc4-mm1_ohci-hcd.patch.gz" on
49 "https://bugtrack.alsa-project.org/alsa-bug/bug_view_page.php?bug_id=0000425"
50 .
51 1, 2 and 4 work out of the box on ohci, if I recall correctly.
52 Bigger is safer operation,
53 smaller gives lower latencies.
54 */
55 #define USX2Y_NRPACKS_VARIABLE y /* If your system works ok with this module's parameter
56 nrpacks set to 1, you might as well comment
57 this #define out, and thereby produce smaller, faster code.
58 You'd also set USX2Y_NRPACKS to 1 then.
59 */
60
61 #ifdef USX2Y_NRPACKS_VARIABLE
62 static int nrpacks = USX2Y_NRPACKS; /* number of packets per urb */
63 #define nr_of_packs() nrpacks
64 module_param(nrpacks, int, 0444);
65 MODULE_PARM_DESC(nrpacks, "Number of packets per URB.");
66 #else
67 #define nr_of_packs() USX2Y_NRPACKS
68 #endif
69
70
71 static int usX2Y_urb_capt_retire(struct snd_usX2Y_substream *subs)
72 {
73 struct urb *urb = subs->completed_urb;
74 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
75 unsigned char *cp;
76 int i, len, lens = 0, hwptr_done = subs->hwptr_done;
77 struct usX2Ydev *usX2Y = subs->usX2Y;
78
79 for (i = 0; i < nr_of_packs(); i++) {
80 cp = (unsigned char*)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
81 if (urb->iso_frame_desc[i].status) { /* active? hmm, skip this */
82 snd_printk(KERN_ERR "active frame status %i. "
83 "Most probably some hardware problem.\n",
84 urb->iso_frame_desc[i].status);
85 return urb->iso_frame_desc[i].status;
86 }
87 len = urb->iso_frame_desc[i].actual_length / usX2Y->stride;
88 if (! len) {
89 snd_printd("0 == len ERROR!\n");
90 continue;
91 }
92
93 /* copy a data chunk */
94 if ((hwptr_done + len) > runtime->buffer_size) {
95 int cnt = runtime->buffer_size - hwptr_done;
96 int blen = cnt * usX2Y->stride;
97 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, blen);
98 memcpy(runtime->dma_area, cp + blen, len * usX2Y->stride - blen);
99 } else {
100 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp,
101 len * usX2Y->stride);
102 }
103 lens += len;
104 if ((hwptr_done += len) >= runtime->buffer_size)
105 hwptr_done -= runtime->buffer_size;
106 }
107
108 subs->hwptr_done = hwptr_done;
109 subs->transfer_done += lens;
110 /* update the pointer, call callback if necessary */
111 if (subs->transfer_done >= runtime->period_size) {
112 subs->transfer_done -= runtime->period_size;
113 snd_pcm_period_elapsed(subs->pcm_substream);
114 }
115 return 0;
116 }
117 /*
118 * prepare urb for playback data pipe
119 *
120 * we copy the data directly from the pcm buffer.
121 * the current position to be copied is held in hwptr field.
122 * since a urb can handle only a single linear buffer, if the total
123 * transferred area overflows the buffer boundary, we cannot send
124 * it directly from the buffer. thus the data is once copied to
125 * a temporary buffer and urb points to that.
126 */
127 static int usX2Y_urb_play_prepare(struct snd_usX2Y_substream *subs,
128 struct urb *cap_urb,
129 struct urb *urb)
130 {
131 int count, counts, pack;
132 struct usX2Ydev *usX2Y = subs->usX2Y;
133 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
134
135 count = 0;
136 for (pack = 0; pack < nr_of_packs(); pack++) {
137 /* calculate the size of a packet */
138 counts = cap_urb->iso_frame_desc[pack].actual_length / usX2Y->stride;
139 count += counts;
140 if (counts < 43 || counts > 50) {
141 snd_printk(KERN_ERR "should not be here with counts=%i\n", counts);
142 return -EPIPE;
143 }
144 /* set up descriptor */
145 urb->iso_frame_desc[pack].offset = pack ?
146 urb->iso_frame_desc[pack - 1].offset +
147 urb->iso_frame_desc[pack - 1].length :
148 0;
149 urb->iso_frame_desc[pack].length = cap_urb->iso_frame_desc[pack].actual_length;
150 }
151 if (atomic_read(&subs->state) >= state_PRERUNNING)
152 if (subs->hwptr + count > runtime->buffer_size) {
153 /* err, the transferred area goes over buffer boundary.
154 * copy the data to the temp buffer.
155 */
156 int len;
157 len = runtime->buffer_size - subs->hwptr;
158 urb->transfer_buffer = subs->tmpbuf;
159 memcpy(subs->tmpbuf, runtime->dma_area +
160 subs->hwptr * usX2Y->stride, len * usX2Y->stride);
161 memcpy(subs->tmpbuf + len * usX2Y->stride,
162 runtime->dma_area, (count - len) * usX2Y->stride);
163 subs->hwptr += count;
164 subs->hwptr -= runtime->buffer_size;
165 } else {
166 /* set the buffer pointer */
167 urb->transfer_buffer = runtime->dma_area + subs->hwptr * usX2Y->stride;
168 if ((subs->hwptr += count) >= runtime->buffer_size)
169 subs->hwptr -= runtime->buffer_size;
170 }
171 else
172 urb->transfer_buffer = subs->tmpbuf;
173 urb->transfer_buffer_length = count * usX2Y->stride;
174 return 0;
175 }
176
177 /*
178 * process after playback data complete
179 *
180 * update the current position and call callback if a period is processed.
181 */
182 static void usX2Y_urb_play_retire(struct snd_usX2Y_substream *subs, struct urb *urb)
183 {
184 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
185 int len = urb->actual_length / subs->usX2Y->stride;
186
187 subs->transfer_done += len;
188 subs->hwptr_done += len;
189 if (subs->hwptr_done >= runtime->buffer_size)
190 subs->hwptr_done -= runtime->buffer_size;
191 if (subs->transfer_done >= runtime->period_size) {
192 subs->transfer_done -= runtime->period_size;
193 snd_pcm_period_elapsed(subs->pcm_substream);
194 }
195 }
196
197 static int usX2Y_urb_submit(struct snd_usX2Y_substream *subs, struct urb *urb, int frame)
198 {
199 int err;
200 if (!urb)
201 return -ENODEV;
202 urb->start_frame = (frame + NRURBS * nr_of_packs()); // let hcd do rollover sanity checks
203 urb->hcpriv = NULL;
204 urb->dev = subs->usX2Y->dev; /* we need to set this at each time */
205 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
206 snd_printk(KERN_ERR "usb_submit_urb() returned %i\n", err);
207 return err;
208 }
209 return 0;
210 }
211
212 static inline int usX2Y_usbframe_complete(struct snd_usX2Y_substream *capsubs,
213 struct snd_usX2Y_substream *playbacksubs,
214 int frame)
215 {
216 int err, state;
217 struct urb *urb = playbacksubs->completed_urb;
218
219 state = atomic_read(&playbacksubs->state);
220 if (NULL != urb) {
221 if (state == state_RUNNING)
222 usX2Y_urb_play_retire(playbacksubs, urb);
223 else if (state >= state_PRERUNNING)
224 atomic_inc(&playbacksubs->state);
225 } else {
226 switch (state) {
227 case state_STARTING1:
228 urb = playbacksubs->urb[0];
229 atomic_inc(&playbacksubs->state);
230 break;
231 case state_STARTING2:
232 urb = playbacksubs->urb[1];
233 atomic_inc(&playbacksubs->state);
234 break;
235 }
236 }
237 if (urb) {
238 if ((err = usX2Y_urb_play_prepare(playbacksubs, capsubs->completed_urb, urb)) ||
239 (err = usX2Y_urb_submit(playbacksubs, urb, frame))) {
240 return err;
241 }
242 }
243
244 playbacksubs->completed_urb = NULL;
245
246 state = atomic_read(&capsubs->state);
247 if (state >= state_PREPARED) {
248 if (state == state_RUNNING) {
249 if ((err = usX2Y_urb_capt_retire(capsubs)))
250 return err;
251 } else if (state >= state_PRERUNNING)
252 atomic_inc(&capsubs->state);
253 if ((err = usX2Y_urb_submit(capsubs, capsubs->completed_urb, frame)))
254 return err;
255 }
256 capsubs->completed_urb = NULL;
257 return 0;
258 }
259
260
261 static void usX2Y_clients_stop(struct usX2Ydev *usX2Y)
262 {
263 int s, u;
264
265 for (s = 0; s < 4; s++) {
266 struct snd_usX2Y_substream *subs = usX2Y->subs[s];
267 if (subs) {
268 snd_printdd("%i %p state=%i\n", s, subs, atomic_read(&subs->state));
269 atomic_set(&subs->state, state_STOPPED);
270 }
271 }
272 for (s = 0; s < 4; s++) {
273 struct snd_usX2Y_substream *subs = usX2Y->subs[s];
274 if (subs) {
275 if (atomic_read(&subs->state) >= state_PRERUNNING) {
276 snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
277 }
278 for (u = 0; u < NRURBS; u++) {
279 struct urb *urb = subs->urb[u];
280 if (NULL != urb)
281 snd_printdd("%i status=%i start_frame=%i\n",
282 u, urb->status, urb->start_frame);
283 }
284 }
285 }
286 usX2Y->prepare_subs = NULL;
287 wake_up(&usX2Y->prepare_wait_queue);
288 }
289
290 static void usX2Y_error_urb_status(struct usX2Ydev *usX2Y,
291 struct snd_usX2Y_substream *subs, struct urb *urb)
292 {
293 snd_printk(KERN_ERR "ep=%i stalled with status=%i\n", subs->endpoint, urb->status);
294 urb->status = 0;
295 usX2Y_clients_stop(usX2Y);
296 }
297
298 static void usX2Y_error_sequence(struct usX2Ydev *usX2Y,
299 struct snd_usX2Y_substream *subs, struct urb *urb)
300 {
301 snd_printk(KERN_ERR
302 "Sequence Error!(hcd_frame=%i ep=%i%s;wait=%i,frame=%i).\n"
303 "Most probably some urb of usb-frame %i is still missing.\n"
304 "Cause could be too long delays in usb-hcd interrupt handling.\n",
305 usb_get_current_frame_number(usX2Y->dev),
306 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out",
307 usX2Y->wait_iso_frame, urb->start_frame, usX2Y->wait_iso_frame);
308 usX2Y_clients_stop(usX2Y);
309 }
310
311 static void i_usX2Y_urb_complete(struct urb *urb)
312 {
313 struct snd_usX2Y_substream *subs = urb->context;
314 struct usX2Ydev *usX2Y = subs->usX2Y;
315
316 if (unlikely(atomic_read(&subs->state) < state_PREPARED)) {
317 snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n",
318 usb_get_current_frame_number(usX2Y->dev),
319 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out",
320 urb->status, urb->start_frame);
321 return;
322 }
323 if (unlikely(urb->status)) {
324 usX2Y_error_urb_status(usX2Y, subs, urb);
325 return;
326 }
327 if (likely((urb->start_frame & 0xFFFF) == (usX2Y->wait_iso_frame & 0xFFFF)))
328 subs->completed_urb = urb;
329 else {
330 usX2Y_error_sequence(usX2Y, subs, urb);
331 return;
332 }
333 {
334 struct snd_usX2Y_substream *capsubs = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE],
335 *playbacksubs = usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
336 if (capsubs->completed_urb &&
337 atomic_read(&capsubs->state) >= state_PREPARED &&
338 (playbacksubs->completed_urb ||
339 atomic_read(&playbacksubs->state) < state_PREPARED)) {
340 if (!usX2Y_usbframe_complete(capsubs, playbacksubs, urb->start_frame))
341 usX2Y->wait_iso_frame += nr_of_packs();
342 else {
343 snd_printdd("\n");
344 usX2Y_clients_stop(usX2Y);
345 }
346 }
347 }
348 }
349
350 static void usX2Y_urbs_set_complete(struct usX2Ydev * usX2Y,
351 void (*complete)(struct urb *))
352 {
353 int s, u;
354 for (s = 0; s < 4; s++) {
355 struct snd_usX2Y_substream *subs = usX2Y->subs[s];
356 if (NULL != subs)
357 for (u = 0; u < NRURBS; u++) {
358 struct urb * urb = subs->urb[u];
359 if (NULL != urb)
360 urb->complete = complete;
361 }
362 }
363 }
364
365 static void usX2Y_subs_startup_finish(struct usX2Ydev * usX2Y)
366 {
367 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_urb_complete);
368 usX2Y->prepare_subs = NULL;
369 }
370
371 static void i_usX2Y_subs_startup(struct urb *urb)
372 {
373 struct snd_usX2Y_substream *subs = urb->context;
374 struct usX2Ydev *usX2Y = subs->usX2Y;
375 struct snd_usX2Y_substream *prepare_subs = usX2Y->prepare_subs;
376 if (NULL != prepare_subs)
377 if (urb->start_frame == prepare_subs->urb[0]->start_frame) {
378 usX2Y_subs_startup_finish(usX2Y);
379 atomic_inc(&prepare_subs->state);
380 wake_up(&usX2Y->prepare_wait_queue);
381 }
382
383 i_usX2Y_urb_complete(urb);
384 }
385
386 static void usX2Y_subs_prepare(struct snd_usX2Y_substream *subs)
387 {
388 snd_printdd("usX2Y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n",
389 subs, subs->endpoint, subs->urb[0], subs->urb[1]);
390 /* reset the pointer */
391 subs->hwptr = 0;
392 subs->hwptr_done = 0;
393 subs->transfer_done = 0;
394 }
395
396
397 static void usX2Y_urb_release(struct urb **urb, int free_tb)
398 {
399 if (*urb) {
400 usb_kill_urb(*urb);
401 if (free_tb)
402 kfree((*urb)->transfer_buffer);
403 usb_free_urb(*urb);
404 *urb = NULL;
405 }
406 }
407 /*
408 * release a substreams urbs
409 */
410 static void usX2Y_urbs_release(struct snd_usX2Y_substream *subs)
411 {
412 int i;
413 snd_printdd("usX2Y_urbs_release() %i\n", subs->endpoint);
414 for (i = 0; i < NRURBS; i++)
415 usX2Y_urb_release(subs->urb + i,
416 subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]);
417
418 kfree(subs->tmpbuf);
419 subs->tmpbuf = NULL;
420 }
421 /*
422 * initialize a substream's urbs
423 */
424 static int usX2Y_urbs_allocate(struct snd_usX2Y_substream *subs)
425 {
426 int i;
427 unsigned int pipe;
428 int is_playback = subs == subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
429 struct usb_device *dev = subs->usX2Y->dev;
430
431 pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
432 usb_rcvisocpipe(dev, subs->endpoint);
433 subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
434 if (!subs->maxpacksize)
435 return -EINVAL;
436
437 if (is_playback && NULL == subs->tmpbuf) { /* allocate a temporary buffer for playback */
438 subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL);
439 if (NULL == subs->tmpbuf) {
440 snd_printk(KERN_ERR "cannot malloc tmpbuf\n");
441 return -ENOMEM;
442 }
443 }
444 /* allocate and initialize data urbs */
445 for (i = 0; i < NRURBS; i++) {
446 struct urb **purb = subs->urb + i;
447 if (*purb) {
448 usb_kill_urb(*purb);
449 continue;
450 }
451 *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL);
452 if (NULL == *purb) {
453 usX2Y_urbs_release(subs);
454 return -ENOMEM;
455 }
456 if (!is_playback && !(*purb)->transfer_buffer) {
457 /* allocate a capture buffer per urb */
458 (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL);
459 if (NULL == (*purb)->transfer_buffer) {
460 usX2Y_urbs_release(subs);
461 return -ENOMEM;
462 }
463 }
464 (*purb)->dev = dev;
465 (*purb)->pipe = pipe;
466 (*purb)->number_of_packets = nr_of_packs();
467 (*purb)->context = subs;
468 (*purb)->interval = 1;
469 (*purb)->complete = i_usX2Y_subs_startup;
470 }
471 return 0;
472 }
473
474 static void usX2Y_subs_startup(struct snd_usX2Y_substream *subs)
475 {
476 struct usX2Ydev *usX2Y = subs->usX2Y;
477 usX2Y->prepare_subs = subs;
478 subs->urb[0]->start_frame = -1;
479 wmb();
480 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup);
481 }
482
483 static int usX2Y_urbs_start(struct snd_usX2Y_substream *subs)
484 {
485 int i, err;
486 struct usX2Ydev *usX2Y = subs->usX2Y;
487
488 if ((err = usX2Y_urbs_allocate(subs)) < 0)
489 return err;
490 subs->completed_urb = NULL;
491 for (i = 0; i < 4; i++) {
492 struct snd_usX2Y_substream *subs = usX2Y->subs[i];
493 if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED)
494 goto start;
495 }
496
497 start:
498 usX2Y_subs_startup(subs);
499 for (i = 0; i < NRURBS; i++) {
500 struct urb *urb = subs->urb[i];
501 if (usb_pipein(urb->pipe)) {
502 unsigned long pack;
503 if (0 == i)
504 atomic_set(&subs->state, state_STARTING3);
505 urb->dev = usX2Y->dev;
506 for (pack = 0; pack < nr_of_packs(); pack++) {
507 urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack;
508 urb->iso_frame_desc[pack].length = subs->maxpacksize;
509 }
510 urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs();
511 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
512 snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err);
513 err = -EPIPE;
514 goto cleanup;
515 } else
516 if (i == 0)
517 usX2Y->wait_iso_frame = urb->start_frame;
518 urb->transfer_flags = 0;
519 } else {
520 atomic_set(&subs->state, state_STARTING1);
521 break;
522 }
523 }
524 err = 0;
525 wait_event(usX2Y->prepare_wait_queue, NULL == usX2Y->prepare_subs);
526 if (atomic_read(&subs->state) != state_PREPARED)
527 err = -EPIPE;
528
529 cleanup:
530 if (err) {
531 usX2Y_subs_startup_finish(usX2Y);
532 usX2Y_clients_stop(usX2Y); // something is completely wroong > stop evrything
533 }
534 return err;
535 }
536
537 /*
538 * return the current pcm pointer. just return the hwptr_done value.
539 */
540 static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(struct snd_pcm_substream *substream)
541 {
542 struct snd_usX2Y_substream *subs = substream->runtime->private_data;
543 return subs->hwptr_done;
544 }
545 /*
546 * start/stop substream
547 */
548 static int snd_usX2Y_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
549 {
550 struct snd_usX2Y_substream *subs = substream->runtime->private_data;
551
552 switch (cmd) {
553 case SNDRV_PCM_TRIGGER_START:
554 snd_printdd("snd_usX2Y_pcm_trigger(START)\n");
555 if (atomic_read(&subs->state) == state_PREPARED &&
556 atomic_read(&subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]->state) >= state_PREPARED) {
557 atomic_set(&subs->state, state_PRERUNNING);
558 } else {
559 snd_printdd("\n");
560 return -EPIPE;
561 }
562 break;
563 case SNDRV_PCM_TRIGGER_STOP:
564 snd_printdd("snd_usX2Y_pcm_trigger(STOP)\n");
565 if (atomic_read(&subs->state) >= state_PRERUNNING)
566 atomic_set(&subs->state, state_PREPARED);
567 break;
568 default:
569 return -EINVAL;
570 }
571 return 0;
572 }
573
574
575 /*
576 * allocate a buffer, setup samplerate
577 *
578 * so far we use a physically linear buffer although packetize transfer
579 * doesn't need a continuous area.
580 * if sg buffer is supported on the later version of alsa, we'll follow
581 * that.
582 */
583 static struct s_c2
584 {
585 char c1, c2;
586 }
587 SetRate44100[] =
588 {
589 { 0x14, 0x08}, // this line sets 44100, well actually a little less
590 { 0x18, 0x40}, // only tascam / frontier design knows the further lines .......
591 { 0x18, 0x42},
592 { 0x18, 0x45},
593 { 0x18, 0x46},
594 { 0x18, 0x48},
595 { 0x18, 0x4A},
596 { 0x18, 0x4C},
597 { 0x18, 0x4E},
598 { 0x18, 0x50},
599 { 0x18, 0x52},
600 { 0x18, 0x54},
601 { 0x18, 0x56},
602 { 0x18, 0x58},
603 { 0x18, 0x5A},
604 { 0x18, 0x5C},
605 { 0x18, 0x5E},
606 { 0x18, 0x60},
607 { 0x18, 0x62},
608 { 0x18, 0x64},
609 { 0x18, 0x66},
610 { 0x18, 0x68},
611 { 0x18, 0x6A},
612 { 0x18, 0x6C},
613 { 0x18, 0x6E},
614 { 0x18, 0x70},
615 { 0x18, 0x72},
616 { 0x18, 0x74},
617 { 0x18, 0x76},
618 { 0x18, 0x78},
619 { 0x18, 0x7A},
620 { 0x18, 0x7C},
621 { 0x18, 0x7E}
622 };
623 static struct s_c2 SetRate48000[] =
624 {
625 { 0x14, 0x09}, // this line sets 48000, well actually a little less
626 { 0x18, 0x40}, // only tascam / frontier design knows the further lines .......
627 { 0x18, 0x42},
628 { 0x18, 0x45},
629 { 0x18, 0x46},
630 { 0x18, 0x48},
631 { 0x18, 0x4A},
632 { 0x18, 0x4C},
633 { 0x18, 0x4E},
634 { 0x18, 0x50},
635 { 0x18, 0x52},
636 { 0x18, 0x54},
637 { 0x18, 0x56},
638 { 0x18, 0x58},
639 { 0x18, 0x5A},
640 { 0x18, 0x5C},
641 { 0x18, 0x5E},
642 { 0x18, 0x60},
643 { 0x18, 0x62},
644 { 0x18, 0x64},
645 { 0x18, 0x66},
646 { 0x18, 0x68},
647 { 0x18, 0x6A},
648 { 0x18, 0x6C},
649 { 0x18, 0x6E},
650 { 0x18, 0x70},
651 { 0x18, 0x73},
652 { 0x18, 0x74},
653 { 0x18, 0x76},
654 { 0x18, 0x78},
655 { 0x18, 0x7A},
656 { 0x18, 0x7C},
657 { 0x18, 0x7E}
658 };
659 #define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000)
660
661 static void i_usX2Y_04Int(struct urb *urb)
662 {
663 struct usX2Ydev *usX2Y = urb->context;
664
665 if (urb->status)
666 snd_printk(KERN_ERR "snd_usX2Y_04Int() urb->status=%i\n", urb->status);
667 if (0 == --usX2Y->US04->len)
668 wake_up(&usX2Y->In04WaitQueue);
669 }
670
671 static int usX2Y_rate_set(struct usX2Ydev *usX2Y, int rate)
672 {
673 int err = 0, i;
674 struct snd_usX2Y_urbSeq *us = NULL;
675 int *usbdata = NULL;
676 struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100;
677
678 if (usX2Y->rate != rate) {
679 us = kzalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL);
680 if (NULL == us) {
681 err = -ENOMEM;
682 goto cleanup;
683 }
684 usbdata = kmalloc(sizeof(int) * NOOF_SETRATE_URBS, GFP_KERNEL);
685 if (NULL == usbdata) {
686 err = -ENOMEM;
687 goto cleanup;
688 }
689 for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
690 if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) {
691 err = -ENOMEM;
692 goto cleanup;
693 }
694 ((char*)(usbdata + i))[0] = ra[i].c1;
695 ((char*)(usbdata + i))[1] = ra[i].c2;
696 usb_fill_bulk_urb(us->urb[i], usX2Y->dev, usb_sndbulkpipe(usX2Y->dev, 4),
697 usbdata + i, 2, i_usX2Y_04Int, usX2Y);
698 #ifdef OLD_USB
699 us->urb[i]->transfer_flags = USB_QUEUE_BULK;
700 #endif
701 }
702 us->submitted = 0;
703 us->len = NOOF_SETRATE_URBS;
704 usX2Y->US04 = us;
705 wait_event_timeout(usX2Y->In04WaitQueue, 0 == us->len, HZ);
706 usX2Y->US04 = NULL;
707 if (us->len)
708 err = -ENODEV;
709 cleanup:
710 if (us) {
711 us->submitted = 2*NOOF_SETRATE_URBS;
712 for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
713 struct urb *urb = us->urb[i];
714 if (urb->status) {
715 if (!err)
716 err = -ENODEV;
717 usb_kill_urb(urb);
718 }
719 usb_free_urb(urb);
720 }
721 usX2Y->US04 = NULL;
722 kfree(usbdata);
723 kfree(us);
724 if (!err)
725 usX2Y->rate = rate;
726 }
727 }
728
729 return err;
730 }
731
732
733 static int usX2Y_format_set(struct usX2Ydev *usX2Y, snd_pcm_format_t format)
734 {
735 int alternate, err;
736 struct list_head* p;
737 if (format == SNDRV_PCM_FORMAT_S24_3LE) {
738 alternate = 2;
739 usX2Y->stride = 6;
740 } else {
741 alternate = 1;
742 usX2Y->stride = 4;
743 }
744 list_for_each(p, &usX2Y->midi_list) {
745 snd_usbmidi_input_stop(p);
746 }
747 usb_kill_urb(usX2Y->In04urb);
748 if ((err = usb_set_interface(usX2Y->dev, 0, alternate))) {
749 snd_printk(KERN_ERR "usb_set_interface error \n");
750 return err;
751 }
752 usX2Y->In04urb->dev = usX2Y->dev;
753 err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL);
754 list_for_each(p, &usX2Y->midi_list) {
755 snd_usbmidi_input_start(p);
756 }
757 usX2Y->format = format;
758 usX2Y->rate = 0;
759 return err;
760 }
761
762
763 static int snd_usX2Y_pcm_hw_params(struct snd_pcm_substream *substream,
764 struct snd_pcm_hw_params *hw_params)
765 {
766 int err = 0;
767 unsigned int rate = params_rate(hw_params);
768 snd_pcm_format_t format = params_format(hw_params);
769 struct snd_card *card = substream->pstr->pcm->card;
770 struct list_head *list;
771
772 snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params);
773 // all pcm substreams off one usX2Y have to operate at the same rate & format
774 list_for_each(list, &card->devices) {
775 struct snd_device *dev;
776 struct snd_pcm *pcm;
777 int s;
778 dev = snd_device(list);
779 if (dev->type != SNDRV_DEV_PCM)
780 continue;
781 pcm = dev->device_data;
782 for (s = 0; s < 2; ++s) {
783 struct snd_pcm_substream *test_substream;
784 test_substream = pcm->streams[s].substream;
785 if (test_substream && test_substream != substream &&
786 test_substream->runtime &&
787 ((test_substream->runtime->format &&
788 test_substream->runtime->format != format) ||
789 (test_substream->runtime->rate &&
790 test_substream->runtime->rate != rate)))
791 return -EINVAL;
792 }
793 }
794 if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) {
795 snd_printk(KERN_ERR "snd_pcm_lib_malloc_pages(%p, %i) returned %i\n",
796 substream, params_buffer_bytes(hw_params), err);
797 return err;
798 }
799 return 0;
800 }
801
802 /*
803 * free the buffer
804 */
805 static int snd_usX2Y_pcm_hw_free(struct snd_pcm_substream *substream)
806 {
807 struct snd_pcm_runtime *runtime = substream->runtime;
808 struct snd_usX2Y_substream *subs = runtime->private_data;
809 mutex_lock(&subs->usX2Y->prepare_mutex);
810 snd_printdd("snd_usX2Y_hw_free(%p)\n", substream);
811
812 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
813 struct snd_usX2Y_substream *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
814 atomic_set(&subs->state, state_STOPPED);
815 usX2Y_urbs_release(subs);
816 if (!cap_subs->pcm_substream ||
817 !cap_subs->pcm_substream->runtime ||
818 !cap_subs->pcm_substream->runtime->status ||
819 cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) {
820 atomic_set(&cap_subs->state, state_STOPPED);
821 usX2Y_urbs_release(cap_subs);
822 }
823 } else {
824 struct snd_usX2Y_substream *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
825 if (atomic_read(&playback_subs->state) < state_PREPARED) {
826 atomic_set(&subs->state, state_STOPPED);
827 usX2Y_urbs_release(subs);
828 }
829 }
830 mutex_unlock(&subs->usX2Y->prepare_mutex);
831 return snd_pcm_lib_free_pages(substream);
832 }
833 /*
834 * prepare callback
835 *
836 * set format and initialize urbs
837 */
838 static int snd_usX2Y_pcm_prepare(struct snd_pcm_substream *substream)
839 {
840 struct snd_pcm_runtime *runtime = substream->runtime;
841 struct snd_usX2Y_substream *subs = runtime->private_data;
842 struct usX2Ydev *usX2Y = subs->usX2Y;
843 struct snd_usX2Y_substream *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
844 int err = 0;
845 snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream);
846
847 mutex_lock(&usX2Y->prepare_mutex);
848 usX2Y_subs_prepare(subs);
849 // Start hardware streams
850 // SyncStream first....
851 if (atomic_read(&capsubs->state) < state_PREPARED) {
852 if (usX2Y->format != runtime->format)
853 if ((err = usX2Y_format_set(usX2Y, runtime->format)) < 0)
854 goto up_prepare_mutex;
855 if (usX2Y->rate != runtime->rate)
856 if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0)
857 goto up_prepare_mutex;
858 snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe");
859 if (0 > (err = usX2Y_urbs_start(capsubs)))
860 goto up_prepare_mutex;
861 }
862
863 if (subs != capsubs && atomic_read(&subs->state) < state_PREPARED)
864 err = usX2Y_urbs_start(subs);
865
866 up_prepare_mutex:
867 mutex_unlock(&usX2Y->prepare_mutex);
868 return err;
869 }
870
871 static struct snd_pcm_hardware snd_usX2Y_2c =
872 {
873 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
874 SNDRV_PCM_INFO_BLOCK_TRANSFER |
875 SNDRV_PCM_INFO_MMAP_VALID |
876 SNDRV_PCM_INFO_BATCH),
877 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE,
878 .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
879 .rate_min = 44100,
880 .rate_max = 48000,
881 .channels_min = 2,
882 .channels_max = 2,
883 .buffer_bytes_max = (2*128*1024),
884 .period_bytes_min = 64,
885 .period_bytes_max = (128*1024),
886 .periods_min = 2,
887 .periods_max = 1024,
888 .fifo_size = 0
889 };
890
891
892
893 static int snd_usX2Y_pcm_open(struct snd_pcm_substream *substream)
894 {
895 struct snd_usX2Y_substream *subs = ((struct snd_usX2Y_substream **)
896 snd_pcm_substream_chip(substream))[substream->stream];
897 struct snd_pcm_runtime *runtime = substream->runtime;
898
899 if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS)
900 return -EBUSY;
901
902 runtime->hw = snd_usX2Y_2c;
903 runtime->private_data = subs;
904 subs->pcm_substream = substream;
905 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000);
906 return 0;
907 }
908
909
910
911 static int snd_usX2Y_pcm_close(struct snd_pcm_substream *substream)
912 {
913 struct snd_pcm_runtime *runtime = substream->runtime;
914 struct snd_usX2Y_substream *subs = runtime->private_data;
915
916 subs->pcm_substream = NULL;
917
918 return 0;
919 }
920
921
922 static struct snd_pcm_ops snd_usX2Y_pcm_ops =
923 {
924 .open = snd_usX2Y_pcm_open,
925 .close = snd_usX2Y_pcm_close,
926 .ioctl = snd_pcm_lib_ioctl,
927 .hw_params = snd_usX2Y_pcm_hw_params,
928 .hw_free = snd_usX2Y_pcm_hw_free,
929 .prepare = snd_usX2Y_pcm_prepare,
930 .trigger = snd_usX2Y_pcm_trigger,
931 .pointer = snd_usX2Y_pcm_pointer,
932 };
933
934
935 /*
936 * free a usb stream instance
937 */
938 static void usX2Y_audio_stream_free(struct snd_usX2Y_substream **usX2Y_substream)
939 {
940 kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]);
941 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL;
942
943 kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]);
944 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL;
945 }
946
947 static void snd_usX2Y_pcm_private_free(struct snd_pcm *pcm)
948 {
949 struct snd_usX2Y_substream **usX2Y_stream = pcm->private_data;
950 if (usX2Y_stream)
951 usX2Y_audio_stream_free(usX2Y_stream);
952 }
953
954 static int usX2Y_audio_stream_new(struct snd_card *card, int playback_endpoint, int capture_endpoint)
955 {
956 struct snd_pcm *pcm;
957 int err, i;
958 struct snd_usX2Y_substream **usX2Y_substream =
959 usX2Y(card)->subs + 2 * usX2Y(card)->pcm_devs;
960
961 for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
962 i <= SNDRV_PCM_STREAM_CAPTURE; ++i) {
963 usX2Y_substream[i] = kzalloc(sizeof(struct snd_usX2Y_substream), GFP_KERNEL);
964 if (NULL == usX2Y_substream[i]) {
965 snd_printk(KERN_ERR "cannot malloc\n");
966 return -ENOMEM;
967 }
968 usX2Y_substream[i]->usX2Y = usX2Y(card);
969 }
970
971 if (playback_endpoint)
972 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]->endpoint = playback_endpoint;
973 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]->endpoint = capture_endpoint;
974
975 err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usX2Y(card)->pcm_devs,
976 playback_endpoint ? 1 : 0, 1,
977 &pcm);
978 if (err < 0) {
979 usX2Y_audio_stream_free(usX2Y_substream);
980 return err;
981 }
982
983 if (playback_endpoint)
984 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usX2Y_pcm_ops);
985 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usX2Y_pcm_ops);
986
987 pcm->private_data = usX2Y_substream;
988 pcm->private_free = snd_usX2Y_pcm_private_free;
989 pcm->info_flags = 0;
990
991 sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->pcm_devs);
992
993 if ((playback_endpoint &&
994 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
995 SNDRV_DMA_TYPE_CONTINUOUS,
996 snd_dma_continuous_data(GFP_KERNEL),
997 64*1024, 128*1024))) ||
998 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
999 SNDRV_DMA_TYPE_CONTINUOUS,
1000 snd_dma_continuous_data(GFP_KERNEL),
1001 64*1024, 128*1024))) {
1002 snd_usX2Y_pcm_private_free(pcm);
1003 return err;
1004 }
1005 usX2Y(card)->pcm_devs++;
1006
1007 return 0;
1008 }
1009
1010 /*
1011 * create a chip instance and set its names.
1012 */
1013 int usX2Y_audio_create(struct snd_card *card)
1014 {
1015 int err = 0;
1016
1017 INIT_LIST_HEAD(&usX2Y(card)->pcm_list);
1018
1019 if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8)))
1020 return err;
1021 if (le16_to_cpu(usX2Y(card)->dev->descriptor.idProduct) == USB_ID_US428)
1022 if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA)))
1023 return err;
1024 if (le16_to_cpu(usX2Y(card)->dev->descriptor.idProduct) != USB_ID_US122)
1025 err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122.
1026 return err;
1027 }
Linus' kernel tree