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[ALSA] Remove superfluous pcm_free callbacks
[net-next-2.6.git] / sound / usb / usx2y / usbusx2yaudio.c
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1da177e4
LT		 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 <sound/driver.h>
35#include <linux/interrupt.h>
36#include <linux/usb.h>
37#include <sound/core.h>
38#include <sound/info.h>
39#include <sound/pcm.h>
40#include <sound/pcm_params.h>
41#include "usx2y.h"
42#include "usbusx2y.h"
43
44#define USX2Y_NRPACKS 4 /* Default value used for nr of packs per urb.
45 1 to 4 have been tested ok on uhci.
46 To use 3 on ohci, you'd need a patch:
47 look for "0000425-linux-2.6.9-rc4-mm1_ohci-hcd.patch.gz" on
48 "https://bugtrack.alsa-project.org/alsa-bug/bug_view_page.php?bug_id=0000425"
49 .
50 1, 2 and 4 work out of the box on ohci, if I recall correctly.
51 Bigger is safer operation,
52 smaller gives lower latencies.
53 */
54#define USX2Y_NRPACKS_VARIABLE y /* If your system works ok with this module's parameter
55 nrpacks set to 1, you might as well comment
56 this #define out, and thereby produce smaller, faster code.
57 You'd also set USX2Y_NRPACKS to 1 then.
58 */
59
60#ifdef USX2Y_NRPACKS_VARIABLE
61 static int nrpacks = USX2Y_NRPACKS; /* number of packets per urb */
62 #define nr_of_packs() nrpacks
63 module_param(nrpacks, int, 0444);
64 MODULE_PARM_DESC(nrpacks, "Number of packets per URB.");
65#else
66 #define nr_of_packs() USX2Y_NRPACKS
67#endif
68
69
70static int usX2Y_urb_capt_retire(snd_usX2Y_substream_t *subs)
71{
72 struct urb *urb = subs->completed_urb;
73 snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime;
74 unsigned char *cp;
75 int i, len, lens = 0, hwptr_done = subs->hwptr_done;
76 usX2Ydev_t *usX2Y = subs->usX2Y;
77
78 for (i = 0; i < nr_of_packs(); i++) {
79 cp = (unsigned char*)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
80 if (urb->iso_frame_desc[i].status) { /* active? hmm, skip this */
d3d579f8 81 snd_printk(KERN_ERR "activ frame status %i. Most propably some hardware problem.\n", urb->iso_frame_desc[i].status);
1da177e4
LT		 82 return urb->iso_frame_desc[i].status;
83 }
84 len = urb->iso_frame_desc[i].actual_length / usX2Y->stride;
85 if (! len) {
86 snd_printd("0 == len ERROR!\n");
87 continue;
88 }
89
90 /* copy a data chunk */
91 if ((hwptr_done + len) > runtime->buffer_size) {
92 int cnt = runtime->buffer_size - hwptr_done;
93 int blen = cnt * usX2Y->stride;
94 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, blen);
95 memcpy(runtime->dma_area, cp + blen, len * usX2Y->stride - blen);
96 } else {
97 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, len * usX2Y->stride);
98 }
99 lens += len;
100 if ((hwptr_done += len) >= runtime->buffer_size)
101 hwptr_done -= runtime->buffer_size;
102 }
103
104 subs->hwptr_done = hwptr_done;
105 subs->transfer_done += lens;
106 /* update the pointer, call callback if necessary */
107 if (subs->transfer_done >= runtime->period_size) {
108 subs->transfer_done -= runtime->period_size;
109 snd_pcm_period_elapsed(subs->pcm_substream);
110 }
111 return 0;
112}
113/*
114 * prepare urb for playback data pipe
115 *
116 * we copy the data directly from the pcm buffer.
117 * the current position to be copied is held in hwptr field.
118 * since a urb can handle only a single linear buffer, if the total
119 * transferred area overflows the buffer boundary, we cannot send
120 * it directly from the buffer. thus the data is once copied to
121 * a temporary buffer and urb points to that.
122 */
123static int usX2Y_urb_play_prepare(snd_usX2Y_substream_t *subs,
124 struct urb *cap_urb,
125 struct urb *urb)
126{
127 int count, counts, pack;
128 usX2Ydev_t* usX2Y = subs->usX2Y;
129 snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime;
130
131 count = 0;
132 for (pack = 0; pack < nr_of_packs(); pack++) {
133 /* calculate the size of a packet */
134 counts = cap_urb->iso_frame_desc[pack].actual_length / usX2Y->stride;
135 count += counts;
136 if (counts < 43 || counts > 50) {
d3d579f8 137 snd_printk(KERN_ERR "should not be here with counts=%i\n", counts);
1da177e4
LT		 138 return -EPIPE;
139 }
140 /* set up descriptor */
141 urb->iso_frame_desc[pack].offset = pack ?
142 urb->iso_frame_desc[pack - 1].offset + urb->iso_frame_desc[pack - 1].length :
143 0;
144 urb->iso_frame_desc[pack].length = cap_urb->iso_frame_desc[pack].actual_length;
145 }
146 if (atomic_read(&subs->state) >= state_PRERUNNING)
147 if (subs->hwptr + count > runtime->buffer_size) {
148 /* err, the transferred area goes over buffer boundary.
149 * copy the data to the temp buffer.
150 */
151 int len;
152 len = runtime->buffer_size - subs->hwptr;
153 urb->transfer_buffer = subs->tmpbuf;
154 memcpy(subs->tmpbuf, runtime->dma_area + subs->hwptr * usX2Y->stride, len * usX2Y->stride);
155 memcpy(subs->tmpbuf + len * usX2Y->stride, runtime->dma_area, (count - len) * usX2Y->stride);
156 subs->hwptr += count;
157 subs->hwptr -= runtime->buffer_size;
158 } else {
159 /* set the buffer pointer */
160 urb->transfer_buffer = runtime->dma_area + subs->hwptr * usX2Y->stride;
161 if ((subs->hwptr += count) >= runtime->buffer_size)
162 subs->hwptr -= runtime->buffer_size;
163 }
164 else
165 urb->transfer_buffer = subs->tmpbuf;
166 urb->transfer_buffer_length = count * usX2Y->stride;
167 return 0;
168}
169
170/*
171 * process after playback data complete
172 *
173 * update the current position and call callback if a period is processed.
174 */
175static void usX2Y_urb_play_retire(snd_usX2Y_substream_t *subs, struct urb *urb)
176{
177 snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime;
178 int len = urb->actual_length / subs->usX2Y->stride;
179
180 subs->transfer_done += len;
181 subs->hwptr_done += len;
182 if (subs->hwptr_done >= runtime->buffer_size)
183 subs->hwptr_done -= runtime->buffer_size;
184 if (subs->transfer_done >= runtime->period_size) {
185 subs->transfer_done -= runtime->period_size;
186 snd_pcm_period_elapsed(subs->pcm_substream);
187 }
188}
189
190static int usX2Y_urb_submit(snd_usX2Y_substream_t *subs, struct urb *urb, int frame)
191{
192 int err;
193 if (!urb)
194 return -ENODEV;
195 urb->start_frame = (frame + NRURBS * nr_of_packs()); // let hcd do rollover sanity checks
196 urb->hcpriv = NULL;
197 urb->dev = subs->usX2Y->chip.dev; /* we need to set this at each time */
198 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
d3d579f8 199 snd_printk(KERN_ERR "usb_submit_urb() returned %i\n", err);
1da177e4
LT		 200 return err;
201 }
202 return 0;
203}
204
205static inline int usX2Y_usbframe_complete(snd_usX2Y_substream_t *capsubs, snd_usX2Y_substream_t *playbacksubs, int frame)
206{
207 int err, state;
208 {
209 struct urb *urb = playbacksubs->completed_urb;
210
211 state = atomic_read(&playbacksubs->state);
212 if (NULL != urb) {
213 if (state == state_RUNNING)
214 usX2Y_urb_play_retire(playbacksubs, urb);
215 else
216 if (state >= state_PRERUNNING) {
217 atomic_inc(&playbacksubs->state);
218 }
219 } else {
220 switch (state) {
221 case state_STARTING1:
222 urb = playbacksubs->urb[0];
223 atomic_inc(&playbacksubs->state);
224 break;
225 case state_STARTING2:
226 urb = playbacksubs->urb[1];
227 atomic_inc(&playbacksubs->state);
228 break;
229 }
230 }
231 if (urb) {
232 if ((err = usX2Y_urb_play_prepare(playbacksubs, capsubs->completed_urb, urb)) ||
233 (err = usX2Y_urb_submit(playbacksubs, urb, frame))) {
234 return err;
235 }
236 }
237
238 playbacksubs->completed_urb = NULL;
239 }
240 state = atomic_read(&capsubs->state);
241 if (state >= state_PREPARED) {
242 if (state == state_RUNNING) {
243 if ((err = usX2Y_urb_capt_retire(capsubs)))
244 return err;
245 } else
246 if (state >= state_PRERUNNING) {
247 atomic_inc(&capsubs->state);
248 }
249 if ((err = usX2Y_urb_submit(capsubs, capsubs->completed_urb, frame)))
250 return err;
251 }
252 capsubs->completed_urb = NULL;
253 return 0;
254}
255
256
257static void usX2Y_clients_stop(usX2Ydev_t *usX2Y)
258{
259 int s, u;
260 for (s = 0; s < 4; s++) {
261 snd_usX2Y_substream_t *subs = usX2Y->subs[s];
262 if (subs) {
263 snd_printdd("%i %p state=%i\n", s, subs, atomic_read(&subs->state));
264 atomic_set(&subs->state, state_STOPPED);
265 }
266 }
267 for (s = 0; s < 4; s++) {
268 snd_usX2Y_substream_t *subs = usX2Y->subs[s];
269 if (subs) {
270 if (atomic_read(&subs->state) >= state_PRERUNNING) {
271 snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
272 }
273 for (u = 0; u < NRURBS; u++) {
274 struct urb *urb = subs->urb[u];
275 if (NULL != urb)
276 snd_printdd("%i status=%i start_frame=%i\n", u, urb->status, urb->start_frame);
277 }
278 }
279 }
280 usX2Y->prepare_subs = NULL;
281 wake_up(&usX2Y->prepare_wait_queue);
282}
283
284static void usX2Y_error_urb_status(usX2Ydev_t *usX2Y, snd_usX2Y_substream_t *subs, struct urb *urb)
285{
d3d579f8 286 snd_printk(KERN_ERR "ep=%i stalled with status=%i\n", subs->endpoint, urb->status);
1da177e4
LT		 287 urb->status = 0;
288 usX2Y_clients_stop(usX2Y);
289}
290
291static void usX2Y_error_sequence(usX2Ydev_t *usX2Y, snd_usX2Y_substream_t *subs, struct urb *urb)
292{
d3d579f8
TI		 293 snd_printk(KERN_ERR "Sequence Error!(hcd_frame=%i ep=%i%s;wait=%i,frame=%i).\n"
294 KERN_ERR "Most propably some urb of usb-frame %i is still missing.\n"
295 KERN_ERR "Cause could be too long delays in usb-hcd interrupt handling.\n",
1da177e4
LT		 296 usb_get_current_frame_number(usX2Y->chip.dev),
297 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", usX2Y->wait_iso_frame, urb->start_frame, usX2Y->wait_iso_frame);
298 usX2Y_clients_stop(usX2Y);
299}
300
301static void i_usX2Y_urb_complete(struct urb *urb, struct pt_regs *regs)
302{
303 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t*)urb->context;
304 usX2Ydev_t *usX2Y = subs->usX2Y;
305
306 if (unlikely(atomic_read(&subs->state) < state_PREPARED)) {
307 snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n", usb_get_current_frame_number(usX2Y->chip.dev), subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", urb->status, urb->start_frame);
308 return;
309 }
310 if (unlikely(urb->status)) {
311 usX2Y_error_urb_status(usX2Y, subs, urb);
312 return;
313 }
314 if (likely((0xFFFF & urb->start_frame) == usX2Y->wait_iso_frame))
315 subs->completed_urb = urb;
316 else {
317 usX2Y_error_sequence(usX2Y, subs, urb);
318 return;
319 }
320 {
321 snd_usX2Y_substream_t *capsubs = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE],
322 *playbacksubs = usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
323 if (capsubs->completed_urb && atomic_read(&capsubs->state) >= state_PREPARED &&
324 (playbacksubs->completed_urb || atomic_read(&playbacksubs->state) < state_PREPARED)) {
325 if (!usX2Y_usbframe_complete(capsubs, playbacksubs, urb->start_frame)) {
326 if (nr_of_packs() <= urb->start_frame &&
327 urb->start_frame <= (2 * nr_of_packs() - 1)) // uhci and ohci
328 usX2Y->wait_iso_frame = urb->start_frame - nr_of_packs();
329 else
330 usX2Y->wait_iso_frame += nr_of_packs();
331 } else {
332 snd_printdd("\n");
333 usX2Y_clients_stop(usX2Y);
334 }
335 }
336 }
337}
338
339static void usX2Y_urbs_set_complete(usX2Ydev_t * usX2Y, void (*complete)(struct urb *, struct pt_regs *))
340{
341 int s, u;
342 for (s = 0; s < 4; s++) {
343 snd_usX2Y_substream_t *subs = usX2Y->subs[s];
344 if (NULL != subs)
345 for (u = 0; u < NRURBS; u++) {
346 struct urb * urb = subs->urb[u];
347 if (NULL != urb)
348 urb->complete = complete;
349 }
350 }
351}
352
353static void usX2Y_subs_startup_finish(usX2Ydev_t * usX2Y)
354{
355 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_urb_complete);
356 usX2Y->prepare_subs = NULL;
357}
358
359static void i_usX2Y_subs_startup(struct urb *urb, struct pt_regs *regs)
360{
361 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t*)urb->context;
362 usX2Ydev_t *usX2Y = subs->usX2Y;
363 snd_usX2Y_substream_t *prepare_subs = usX2Y->prepare_subs;
364 if (NULL != prepare_subs)
365 if (urb->start_frame == prepare_subs->urb[0]->start_frame) {
366 usX2Y_subs_startup_finish(usX2Y);
367 atomic_inc(&prepare_subs->state);
368 wake_up(&usX2Y->prepare_wait_queue);
369 }
370
371 i_usX2Y_urb_complete(urb, regs);
372}
373
374static void usX2Y_subs_prepare(snd_usX2Y_substream_t *subs)
375{
376 snd_printdd("usX2Y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n", subs, subs->endpoint, subs->urb[0], subs->urb[1]);
377 /* reset the pointer */
378 subs->hwptr = 0;
379 subs->hwptr_done = 0;
380 subs->transfer_done = 0;
381}
382
383
384static void usX2Y_urb_release(struct urb** urb, int free_tb)
385{
386 if (*urb) {
387 usb_kill_urb(*urb);
388 if (free_tb)
389 kfree((*urb)->transfer_buffer);
390 usb_free_urb(*urb);
391 *urb = NULL;
392 }
393}
394/*
395 * release a substreams urbs
396 */
397static void usX2Y_urbs_release(snd_usX2Y_substream_t *subs)
398{
399 int i;
400 snd_printdd("usX2Y_urbs_release() %i\n", subs->endpoint);
401 for (i = 0; i < NRURBS; i++)
402 usX2Y_urb_release(subs->urb + i, subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]);
403
4d572776
JJ		 404 kfree(subs->tmpbuf);
405 subs->tmpbuf = NULL;
1da177e4
LT		 406}
407/*
408 * initialize a substream's urbs
409 */
410static int usX2Y_urbs_allocate(snd_usX2Y_substream_t *subs)
411{
412 int i;
413 unsigned int pipe;
414 int is_playback = subs == subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
415 struct usb_device *dev = subs->usX2Y->chip.dev;
416
417 pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
418 usb_rcvisocpipe(dev, subs->endpoint);
419 subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
420 if (!subs->maxpacksize)
421 return -EINVAL;
422
423 if (is_playback && NULL == subs->tmpbuf) { /* allocate a temporary buffer for playback */
424 subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL);
425 if (NULL == subs->tmpbuf) {
426 snd_printk(KERN_ERR "cannot malloc tmpbuf\n");
427 return -ENOMEM;
428 }
429 }
430 /* allocate and initialize data urbs */
431 for (i = 0; i < NRURBS; i++) {
432 struct urb** purb = subs->urb + i;
433 if (*purb) {
434 usb_kill_urb(*purb);
435 continue;
436 }
437 *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL);
438 if (NULL == *purb) {
439 usX2Y_urbs_release(subs);
440 return -ENOMEM;
441 }
442 if (!is_playback && !(*purb)->transfer_buffer) {
443 /* allocate a capture buffer per urb */
444 (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL);
445 if (NULL == (*purb)->transfer_buffer) {
446 usX2Y_urbs_release(subs);
447 return -ENOMEM;
448 }
449 }
450 (*purb)->dev = dev;
451 (*purb)->pipe = pipe;
452 (*purb)->number_of_packets = nr_of_packs();
453 (*purb)->context = subs;
454 (*purb)->interval = 1;
455 (*purb)->complete = i_usX2Y_subs_startup;
456 }
457 return 0;
458}
459
460static void usX2Y_subs_startup(snd_usX2Y_substream_t *subs)
461{
462 usX2Ydev_t *usX2Y = subs->usX2Y;
463 usX2Y->prepare_subs = subs;
464 subs->urb[0]->start_frame = -1;
465 wmb();
466 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup);
467}
468
469static int usX2Y_urbs_start(snd_usX2Y_substream_t *subs)
470{
471 int i, err;
472 usX2Ydev_t *usX2Y = subs->usX2Y;
473
474 if ((err = usX2Y_urbs_allocate(subs)) < 0)
475 return err;
476 subs->completed_urb = NULL;
477 for (i = 0; i < 4; i++) {
478 snd_usX2Y_substream_t *subs = usX2Y->subs[i];
479 if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED)
480 goto start;
481 }
482 usX2Y->wait_iso_frame = -1;
483 start:
484 {
485 usX2Y_subs_startup(subs);
486 for (i = 0; i < NRURBS; i++) {
487 struct urb *urb = subs->urb[i];
488 if (usb_pipein(urb->pipe)) {
489 unsigned long pack;
490 if (0 == i)
491 atomic_set(&subs->state, state_STARTING3);
492 urb->dev = usX2Y->chip.dev;
493 urb->transfer_flags = URB_ISO_ASAP;
494 for (pack = 0; pack < nr_of_packs(); pack++) {
495 urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack;
496 urb->iso_frame_desc[pack].length = subs->maxpacksize;
497 }
498 urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs();
499 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
500 snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err);
501 err = -EPIPE;
502 goto cleanup;
503 } else {
504 if (0 > usX2Y->wait_iso_frame)
505 usX2Y->wait_iso_frame = urb->start_frame;
506 }
507 urb->transfer_flags = 0;
508 } else {
509 atomic_set(&subs->state, state_STARTING1);
510 break;
511 }
512 }
513 err = 0;
514 wait_event(usX2Y->prepare_wait_queue, NULL == usX2Y->prepare_subs);
515 if (atomic_read(&subs->state) != state_PREPARED) {
516 err = -EPIPE;
517 }
518
519 cleanup:
520 if (err) {
521 usX2Y_subs_startup_finish(usX2Y);
522 usX2Y_clients_stop(usX2Y); // something is completely wroong > stop evrything
523 }
524 }
525 return err;
526}
527
528/*
529 * return the current pcm pointer. just return the hwptr_done value.
530 */
531static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(snd_pcm_substream_t *substream)
532{
533 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data;
534 return subs->hwptr_done;
535}
536/*
537 * start/stop substream
538 */
539static int snd_usX2Y_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
540{
541 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data;
542
543 switch (cmd) {
544 case SNDRV_PCM_TRIGGER_START:
545 snd_printdd("snd_usX2Y_pcm_trigger(START)\n");
546 if (atomic_read(&subs->state) == state_PREPARED &&
547 atomic_read(&subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]->state) >= state_PREPARED) {
548 atomic_set(&subs->state, state_PRERUNNING);
549 } else {
550 snd_printdd("\n");
551 return -EPIPE;
552 }
553 break;
554 case SNDRV_PCM_TRIGGER_STOP:
555 snd_printdd("snd_usX2Y_pcm_trigger(STOP)\n");
556 if (atomic_read(&subs->state) >= state_PRERUNNING)
557 atomic_set(&subs->state, state_PREPARED);
558 break;
559 default:
560 return -EINVAL;
561 }
562 return 0;
563}
564
565
566/*
567 * allocate a buffer, setup samplerate
568 *
569 * so far we use a physically linear buffer although packetize transfer
570 * doesn't need a continuous area.
571 * if sg buffer is supported on the later version of alsa, we'll follow
572 * that.
573 */
574static struct s_c2
575{
576 char c1, c2;
577}
578 SetRate44100[] =
579{
580 { 0x14, 0x08}, // this line sets 44100, well actually a little less
581 { 0x18, 0x40}, // only tascam / frontier design knows the further lines .......
582 { 0x18, 0x42},
583 { 0x18, 0x45},
584 { 0x18, 0x46},
585 { 0x18, 0x48},
586 { 0x18, 0x4A},
587 { 0x18, 0x4C},
588 { 0x18, 0x4E},
589 { 0x18, 0x50},
590 { 0x18, 0x52},
591 { 0x18, 0x54},
592 { 0x18, 0x56},
593 { 0x18, 0x58},
594 { 0x18, 0x5A},
595 { 0x18, 0x5C},
596 { 0x18, 0x5E},
597 { 0x18, 0x60},
598 { 0x18, 0x62},
599 { 0x18, 0x64},
600 { 0x18, 0x66},
601 { 0x18, 0x68},
602 { 0x18, 0x6A},
603 { 0x18, 0x6C},
604 { 0x18, 0x6E},
605 { 0x18, 0x70},
606 { 0x18, 0x72},
607 { 0x18, 0x74},
608 { 0x18, 0x76},
609 { 0x18, 0x78},
610 { 0x18, 0x7A},
611 { 0x18, 0x7C},
612 { 0x18, 0x7E}
613};
614static struct s_c2 SetRate48000[] =
615{
616 { 0x14, 0x09}, // this line sets 48000, well actually a little less
617 { 0x18, 0x40}, // only tascam / frontier design knows the further lines .......
618 { 0x18, 0x42},
619 { 0x18, 0x45},
620 { 0x18, 0x46},
621 { 0x18, 0x48},
622 { 0x18, 0x4A},
623 { 0x18, 0x4C},
624 { 0x18, 0x4E},
625 { 0x18, 0x50},
626 { 0x18, 0x52},
627 { 0x18, 0x54},
628 { 0x18, 0x56},
629 { 0x18, 0x58},
630 { 0x18, 0x5A},
631 { 0x18, 0x5C},
632 { 0x18, 0x5E},
633 { 0x18, 0x60},
634 { 0x18, 0x62},
635 { 0x18, 0x64},
636 { 0x18, 0x66},
637 { 0x18, 0x68},
638 { 0x18, 0x6A},
639 { 0x18, 0x6C},
640 { 0x18, 0x6E},
641 { 0x18, 0x70},
642 { 0x18, 0x73},
643 { 0x18, 0x74},
644 { 0x18, 0x76},
645 { 0x18, 0x78},
646 { 0x18, 0x7A},
647 { 0x18, 0x7C},
648 { 0x18, 0x7E}
649};
650#define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000)
651
652static void i_usX2Y_04Int(struct urb* urb, struct pt_regs *regs)
653{
654 usX2Ydev_t* usX2Y = urb->context;
655
d3d579f8
TI		 656 if (urb->status)
657 snd_printk(KERN_ERR "snd_usX2Y_04Int() urb->status=%i\n", urb->status);
1da177e4
LT		 658 if (0 == --usX2Y->US04->len)
659 wake_up(&usX2Y->In04WaitQueue);
660}
661
662static int usX2Y_rate_set(usX2Ydev_t *usX2Y, int rate)
663{
664 int err = 0, i;
665 snd_usX2Y_urbSeq_t *us = NULL;
666 int *usbdata = NULL;
667 struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100;
668
669 if (usX2Y->rate != rate) {
670 us = kmalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL);
671 if (NULL == us) {
672 err = -ENOMEM;
673 goto cleanup;
674 }
675 memset(us, 0, sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS);
676 usbdata = kmalloc(sizeof(int)*NOOF_SETRATE_URBS, GFP_KERNEL);
677 if (NULL == usbdata) {
678 err = -ENOMEM;
679 goto cleanup;
680 }
681 for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
682 if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) {
683 err = -ENOMEM;
684 goto cleanup;
685 }
686 ((char*)(usbdata + i))[0] = ra[i].c1;
687 ((char*)(usbdata + i))[1] = ra[i].c2;
688 usb_fill_bulk_urb(us->urb[i], usX2Y->chip.dev, usb_sndbulkpipe(usX2Y->chip.dev, 4),
689 usbdata + i, 2, i_usX2Y_04Int, usX2Y);
690#ifdef OLD_USB
691 us->urb[i]->transfer_flags = USB_QUEUE_BULK;
692#endif
693 }
694 us->submitted = 0;
695 us->len = NOOF_SETRATE_URBS;
696 usX2Y->US04 = us;
697 wait_event_timeout(usX2Y->In04WaitQueue, 0 == us->len, HZ);
698 usX2Y->US04 = NULL;
699 if (us->len)
700 err = -ENODEV;
701 cleanup:
702 if (us) {
703 us->submitted = 2*NOOF_SETRATE_URBS;
704 for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
705 struct urb *urb = us->urb[i];
706 if (urb->status) {
707 if (!err)
708 err = -ENODEV;
709 usb_kill_urb(urb);
710 }
711 usb_free_urb(urb);
712 }
713 usX2Y->US04 = NULL;
714 kfree(usbdata);
715 kfree(us);
716 if (!err) {
717 usX2Y->rate = rate;
718 }
719 }
720 }
721
722 return err;
723}
724
725
726static int usX2Y_format_set(usX2Ydev_t *usX2Y, snd_pcm_format_t format)
727{
728 int alternate, err;
729 struct list_head* p;
730 if (format == SNDRV_PCM_FORMAT_S24_3LE) {
731 alternate = 2;
732 usX2Y->stride = 6;
733 } else {
734 alternate = 1;
735 usX2Y->stride = 4;
736 }
737 list_for_each(p, &usX2Y->chip.midi_list) {
738 snd_usbmidi_input_stop(p);
739 }
740 usb_kill_urb(usX2Y->In04urb);
741 if ((err = usb_set_interface(usX2Y->chip.dev, 0, alternate))) {
d3d579f8 742 snd_printk(KERN_ERR "usb_set_interface error \n");
1da177e4
LT		 743 return err;
744 }
745 usX2Y->In04urb->dev = usX2Y->chip.dev;
746 err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL);
747 list_for_each(p, &usX2Y->chip.midi_list) {
748 snd_usbmidi_input_start(p);
749 }
750 usX2Y->format = format;
751 usX2Y->rate = 0;
752 return err;
753}
754
755
756static int snd_usX2Y_pcm_hw_params(snd_pcm_substream_t *substream,
757 snd_pcm_hw_params_t *hw_params)
758{
759 int err = 0;
760 unsigned int rate = params_rate(hw_params);
761 snd_pcm_format_t format = params_format(hw_params);
762 snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params);
763
764 { // all pcm substreams off one usX2Y have to operate at the same rate & format
765 snd_card_t *card = substream->pstr->pcm->card;
766 struct list_head *list;
767 list_for_each(list, &card->devices) {
768 snd_device_t *dev;
769 snd_pcm_t *pcm;
770 int s;
771 dev = snd_device(list);
772 if (dev->type != SNDRV_DEV_PCM)
773 continue;
774 pcm = dev->device_data;
775 for (s = 0; s < 2; ++s) {
776 snd_pcm_substream_t *test_substream;
777 test_substream = pcm->streams[s].substream;
778 if (test_substream && test_substream != substream &&
779 test_substream->runtime &&
780 ((test_substream->runtime->format &&
781 test_substream->runtime->format != format) ||
782 (test_substream->runtime->rate &&
783 test_substream->runtime->rate != rate)))
784 return -EINVAL;
785 }
786 }
787 }
788 if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) {
d3d579f8 789 snd_printk(KERN_ERR "snd_pcm_lib_malloc_pages(%p, %i) returned %i\n", substream, params_buffer_bytes(hw_params), err);
1da177e4
LT		 790 return err;
791 }
792 return 0;
793}
794
795/*
796 * free the buffer
797 */
798static int snd_usX2Y_pcm_hw_free(snd_pcm_substream_t *substream)
799{
800 snd_pcm_runtime_t *runtime = substream->runtime;
801 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
802 down(&subs->usX2Y->prepare_mutex);
803 snd_printdd("snd_usX2Y_hw_free(%p)\n", substream);
804
805 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
806 snd_usX2Y_substream_t *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
807 atomic_set(&subs->state, state_STOPPED);
808 usX2Y_urbs_release(subs);
809 if (!cap_subs->pcm_substream ||
810 !cap_subs->pcm_substream->runtime ||
811 !cap_subs->pcm_substream->runtime->status ||
812 cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) {
813 atomic_set(&cap_subs->state, state_STOPPED);
814 usX2Y_urbs_release(cap_subs);
815 }
816 } else {
817 snd_usX2Y_substream_t *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
818 if (atomic_read(&playback_subs->state) < state_PREPARED) {
819 atomic_set(&subs->state, state_STOPPED);
820 usX2Y_urbs_release(subs);
821 }
822 }
823 up(&subs->usX2Y->prepare_mutex);
824 return snd_pcm_lib_free_pages(substream);
825}
826/*
827 * prepare callback
828 *
829 * set format and initialize urbs
830 */
831static int snd_usX2Y_pcm_prepare(snd_pcm_substream_t *substream)
832{
833 snd_pcm_runtime_t *runtime = substream->runtime;
834 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
835 usX2Ydev_t *usX2Y = subs->usX2Y;
836 snd_usX2Y_substream_t *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
837 int err = 0;
838 snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream);
839
840 down(&usX2Y->prepare_mutex);
841 usX2Y_subs_prepare(subs);
842// Start hardware streams
843// SyncStream first....
844 if (atomic_read(&capsubs->state) < state_PREPARED) {
845 if (usX2Y->format != runtime->format)
846 if ((err = usX2Y_format_set(usX2Y, runtime->format)) < 0)
847 goto up_prepare_mutex;
848 if (usX2Y->rate != runtime->rate)
849 if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0)
850 goto up_prepare_mutex;
851 snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe");
852 if (0 > (err = usX2Y_urbs_start(capsubs)))
853 goto up_prepare_mutex;
854 }
855
856 if (subs != capsubs && atomic_read(&subs->state) < state_PREPARED)
857 err = usX2Y_urbs_start(subs);
858
859 up_prepare_mutex:
860 up(&usX2Y->prepare_mutex);
861 return err;
862}
863
864static snd_pcm_hardware_t snd_usX2Y_2c =
865{
866 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
867 SNDRV_PCM_INFO_BLOCK_TRANSFER |
868 SNDRV_PCM_INFO_MMAP_VALID),
869 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE,
870 .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
871 .rate_min = 44100,
872 .rate_max = 48000,
873 .channels_min = 2,
874 .channels_max = 2,
875 .buffer_bytes_max = (2*128*1024),
876 .period_bytes_min = 64,
877 .period_bytes_max = (128*1024),
878 .periods_min = 2,
879 .periods_max = 1024,
880 .fifo_size = 0
881};
882
883
884
885static int snd_usX2Y_pcm_open(snd_pcm_substream_t *substream)
886{
887 snd_usX2Y_substream_t *subs = ((snd_usX2Y_substream_t **)
888 snd_pcm_substream_chip(substream))[substream->stream];
889 snd_pcm_runtime_t *runtime = substream->runtime;
890
891 if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS)
892 return -EBUSY;
893
894 runtime->hw = snd_usX2Y_2c;
895 runtime->private_data = subs;
896 subs->pcm_substream = substream;
897 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000);
898 return 0;
899}
900
901
902
903static int snd_usX2Y_pcm_close(snd_pcm_substream_t *substream)
904{
905 snd_pcm_runtime_t *runtime = substream->runtime;
906 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
907 int err = 0;
908
909 subs->pcm_substream = NULL;
910
911 return err;
912}
913
914
915static snd_pcm_ops_t snd_usX2Y_pcm_ops =
916{
917 .open = snd_usX2Y_pcm_open,
918 .close = snd_usX2Y_pcm_close,
919 .ioctl = snd_pcm_lib_ioctl,
920 .hw_params = snd_usX2Y_pcm_hw_params,
921 .hw_free = snd_usX2Y_pcm_hw_free,
922 .prepare = snd_usX2Y_pcm_prepare,
923 .trigger = snd_usX2Y_pcm_trigger,
924 .pointer = snd_usX2Y_pcm_pointer,
925};
926
927
928/*
929 * free a usb stream instance
930 */
931static void usX2Y_audio_stream_free(snd_usX2Y_substream_t **usX2Y_substream)
932{
933 if (NULL != usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]) {
934 kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]);
935 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL;
936 }
937 kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]);
938 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL;
939}
940
941static void snd_usX2Y_pcm_private_free(snd_pcm_t *pcm)
942{
943 snd_usX2Y_substream_t **usX2Y_stream = pcm->private_data;
c3e6f7d8 944 if (usX2Y_stream)
1da177e4 945 usX2Y_audio_stream_free(usX2Y_stream);
1da177e4
LT		 946}
947
948static int usX2Y_audio_stream_new(snd_card_t *card, int playback_endpoint, int capture_endpoint)
949{
950 snd_pcm_t *pcm;
951 int err, i;
952 snd_usX2Y_substream_t **usX2Y_substream =
953 usX2Y(card)->subs + 2 * usX2Y(card)->chip.pcm_devs;
954
955 for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
956 i <= SNDRV_PCM_STREAM_CAPTURE; ++i) {
561b220a 957 usX2Y_substream[i] = kzalloc(sizeof(snd_usX2Y_substream_t), GFP_KERNEL);
1da177e4
LT		 958 if (NULL == usX2Y_substream[i]) {
959 snd_printk(KERN_ERR "cannot malloc\n");
960 return -ENOMEM;
961 }
962 usX2Y_substream[i]->usX2Y = usX2Y(card);
963 }
964
965 if (playback_endpoint)
966 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]->endpoint = playback_endpoint;
967 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]->endpoint = capture_endpoint;
968
969 err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usX2Y(card)->chip.pcm_devs,
970 playback_endpoint ? 1 : 0, 1,
971 &pcm);
972 if (err < 0) {
973 usX2Y_audio_stream_free(usX2Y_substream);
974 return err;
975 }
976
977 if (playback_endpoint)
978 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usX2Y_pcm_ops);
979 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usX2Y_pcm_ops);
980
981 pcm->private_data = usX2Y_substream;
982 pcm->private_free = snd_usX2Y_pcm_private_free;
983 pcm->info_flags = 0;
984
985 sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->chip.pcm_devs);
986
987 if ((playback_endpoint &&
988 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
989 SNDRV_DMA_TYPE_CONTINUOUS,
990 snd_dma_continuous_data(GFP_KERNEL),
991 64*1024, 128*1024))) ||
992 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
993 SNDRV_DMA_TYPE_CONTINUOUS,
994 snd_dma_continuous_data(GFP_KERNEL),
995 64*1024, 128*1024))) {
996 snd_usX2Y_pcm_private_free(pcm);
997 return err;
998 }
999 usX2Y(card)->chip.pcm_devs++;
1000
1001 return 0;
1002}
1003
1004/*
1005 * create a chip instance and set its names.
1006 */
1007int usX2Y_audio_create(snd_card_t* card)
1008{
1009 int err = 0;
1010
1011 INIT_LIST_HEAD(&usX2Y(card)->chip.pcm_list);
1012
1013 if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8)))
1014 return err;
1015 if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) == USB_ID_US428)
1016 if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA)))
1017 return err;
1018 if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) != USB_ID_US122)
1019 err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122.
1020 return err;
1021}
Clone of davem's net-next-2.6 tree