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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/usb/usx2y/usbusx2yaudio.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'sound/usb/usx2y/usbusx2yaudio.c')
-rw-r--r--sound/usb/usx2y/usbusx2yaudio.c1026
1 files changed, 1026 insertions, 0 deletions
diff --git a/sound/usb/usx2y/usbusx2yaudio.c b/sound/usb/usx2y/usbusx2yaudio.c
new file mode 100644
index 000000000000..4c292e090069
--- /dev/null
+++ b/sound/usb/usx2y/usbusx2yaudio.c
@@ -0,0 +1,1026 @@
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 */
81 snd_printk("activ frame status %i. Most propably some hardware problem.\n", urb->iso_frame_desc[i].status);
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) {
137 snd_printk("should not be here with counts=%i\n", counts);
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) {
199 snd_printk("usb_submit_urb() returned %i\n", err);
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{
286 snd_printk("ep=%i stalled with status=%i\n", subs->endpoint, urb->status);
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{
293 snd_printk("Sequence Error!(hcd_frame=%i ep=%i%s;wait=%i,frame=%i).\n"
294 "Most propably some urb of usb-frame %i is still missing.\n"
295 "Cause could be too long delays in usb-hcd interrupt handling.\n",
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
404 if (subs->tmpbuf) {
405 kfree(subs->tmpbuf);
406 subs->tmpbuf = NULL;
407 }
408}
409/*
410 * initialize a substream's urbs
411 */
412static int usX2Y_urbs_allocate(snd_usX2Y_substream_t *subs)
413{
414 int i;
415 unsigned int pipe;
416 int is_playback = subs == subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
417 struct usb_device *dev = subs->usX2Y->chip.dev;
418
419 pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
420 usb_rcvisocpipe(dev, subs->endpoint);
421 subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
422 if (!subs->maxpacksize)
423 return -EINVAL;
424
425 if (is_playback && NULL == subs->tmpbuf) { /* allocate a temporary buffer for playback */
426 subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL);
427 if (NULL == subs->tmpbuf) {
428 snd_printk(KERN_ERR "cannot malloc tmpbuf\n");
429 return -ENOMEM;
430 }
431 }
432 /* allocate and initialize data urbs */
433 for (i = 0; i < NRURBS; i++) {
434 struct urb** purb = subs->urb + i;
435 if (*purb) {
436 usb_kill_urb(*purb);
437 continue;
438 }
439 *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL);
440 if (NULL == *purb) {
441 usX2Y_urbs_release(subs);
442 return -ENOMEM;
443 }
444 if (!is_playback && !(*purb)->transfer_buffer) {
445 /* allocate a capture buffer per urb */
446 (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL);
447 if (NULL == (*purb)->transfer_buffer) {
448 usX2Y_urbs_release(subs);
449 return -ENOMEM;
450 }
451 }
452 (*purb)->dev = dev;
453 (*purb)->pipe = pipe;
454 (*purb)->number_of_packets = nr_of_packs();
455 (*purb)->context = subs;
456 (*purb)->interval = 1;
457 (*purb)->complete = i_usX2Y_subs_startup;
458 }
459 return 0;
460}
461
462static void usX2Y_subs_startup(snd_usX2Y_substream_t *subs)
463{
464 usX2Ydev_t *usX2Y = subs->usX2Y;
465 usX2Y->prepare_subs = subs;
466 subs->urb[0]->start_frame = -1;
467 wmb();
468 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup);
469}
470
471static int usX2Y_urbs_start(snd_usX2Y_substream_t *subs)
472{
473 int i, err;
474 usX2Ydev_t *usX2Y = subs->usX2Y;
475
476 if ((err = usX2Y_urbs_allocate(subs)) < 0)
477 return err;
478 subs->completed_urb = NULL;
479 for (i = 0; i < 4; i++) {
480 snd_usX2Y_substream_t *subs = usX2Y->subs[i];
481 if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED)
482 goto start;
483 }
484 usX2Y->wait_iso_frame = -1;
485 start:
486 {
487 usX2Y_subs_startup(subs);
488 for (i = 0; i < NRURBS; i++) {
489 struct urb *urb = subs->urb[i];
490 if (usb_pipein(urb->pipe)) {
491 unsigned long pack;
492 if (0 == i)
493 atomic_set(&subs->state, state_STARTING3);
494 urb->dev = usX2Y->chip.dev;
495 urb->transfer_flags = URB_ISO_ASAP;
496 for (pack = 0; pack < nr_of_packs(); pack++) {
497 urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack;
498 urb->iso_frame_desc[pack].length = subs->maxpacksize;
499 }
500 urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs();
501 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
502 snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err);
503 err = -EPIPE;
504 goto cleanup;
505 } else {
506 if (0 > usX2Y->wait_iso_frame)
507 usX2Y->wait_iso_frame = urb->start_frame;
508 }
509 urb->transfer_flags = 0;
510 } else {
511 atomic_set(&subs->state, state_STARTING1);
512 break;
513 }
514 }
515 err = 0;
516 wait_event(usX2Y->prepare_wait_queue, NULL == usX2Y->prepare_subs);
517 if (atomic_read(&subs->state) != state_PREPARED) {
518 err = -EPIPE;
519 }
520
521 cleanup:
522 if (err) {
523 usX2Y_subs_startup_finish(usX2Y);
524 usX2Y_clients_stop(usX2Y); // something is completely wroong > stop evrything
525 }
526 }
527 return err;
528}
529
530/*
531 * return the current pcm pointer. just return the hwptr_done value.
532 */
533static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(snd_pcm_substream_t *substream)
534{
535 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data;
536 return subs->hwptr_done;
537}
538/*
539 * start/stop substream
540 */
541static int snd_usX2Y_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
542{
543 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data;
544
545 switch (cmd) {
546 case SNDRV_PCM_TRIGGER_START:
547 snd_printdd("snd_usX2Y_pcm_trigger(START)\n");
548 if (atomic_read(&subs->state) == state_PREPARED &&
549 atomic_read(&subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]->state) >= state_PREPARED) {
550 atomic_set(&subs->state, state_PRERUNNING);
551 } else {
552 snd_printdd("\n");
553 return -EPIPE;
554 }
555 break;
556 case SNDRV_PCM_TRIGGER_STOP:
557 snd_printdd("snd_usX2Y_pcm_trigger(STOP)\n");
558 if (atomic_read(&subs->state) >= state_PRERUNNING)
559 atomic_set(&subs->state, state_PREPARED);
560 break;
561 default:
562 return -EINVAL;
563 }
564 return 0;
565}
566
567
568/*
569 * allocate a buffer, setup samplerate
570 *
571 * so far we use a physically linear buffer although packetize transfer
572 * doesn't need a continuous area.
573 * if sg buffer is supported on the later version of alsa, we'll follow
574 * that.
575 */
576static struct s_c2
577{
578 char c1, c2;
579}
580 SetRate44100[] =
581{
582 { 0x14, 0x08}, // this line sets 44100, well actually a little less
583 { 0x18, 0x40}, // only tascam / frontier design knows the further lines .......
584 { 0x18, 0x42},
585 { 0x18, 0x45},
586 { 0x18, 0x46},
587 { 0x18, 0x48},
588 { 0x18, 0x4A},
589 { 0x18, 0x4C},
590 { 0x18, 0x4E},
591 { 0x18, 0x50},
592 { 0x18, 0x52},
593 { 0x18, 0x54},
594 { 0x18, 0x56},
595 { 0x18, 0x58},
596 { 0x18, 0x5A},
597 { 0x18, 0x5C},
598 { 0x18, 0x5E},
599 { 0x18, 0x60},
600 { 0x18, 0x62},
601 { 0x18, 0x64},
602 { 0x18, 0x66},
603 { 0x18, 0x68},
604 { 0x18, 0x6A},
605 { 0x18, 0x6C},
606 { 0x18, 0x6E},
607 { 0x18, 0x70},
608 { 0x18, 0x72},
609 { 0x18, 0x74},
610 { 0x18, 0x76},
611 { 0x18, 0x78},
612 { 0x18, 0x7A},
613 { 0x18, 0x7C},
614 { 0x18, 0x7E}
615};
616static struct s_c2 SetRate48000[] =
617{
618 { 0x14, 0x09}, // this line sets 48000, well actually a little less
619 { 0x18, 0x40}, // only tascam / frontier design knows the further lines .......
620 { 0x18, 0x42},
621 { 0x18, 0x45},
622 { 0x18, 0x46},
623 { 0x18, 0x48},
624 { 0x18, 0x4A},
625 { 0x18, 0x4C},
626 { 0x18, 0x4E},
627 { 0x18, 0x50},
628 { 0x18, 0x52},
629 { 0x18, 0x54},
630 { 0x18, 0x56},
631 { 0x18, 0x58},
632 { 0x18, 0x5A},
633 { 0x18, 0x5C},
634 { 0x18, 0x5E},
635 { 0x18, 0x60},
636 { 0x18, 0x62},
637 { 0x18, 0x64},
638 { 0x18, 0x66},
639 { 0x18, 0x68},
640 { 0x18, 0x6A},
641 { 0x18, 0x6C},
642 { 0x18, 0x6E},
643 { 0x18, 0x70},
644 { 0x18, 0x73},
645 { 0x18, 0x74},
646 { 0x18, 0x76},
647 { 0x18, 0x78},
648 { 0x18, 0x7A},
649 { 0x18, 0x7C},
650 { 0x18, 0x7E}
651};
652#define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000)
653
654static void i_usX2Y_04Int(struct urb* urb, struct pt_regs *regs)
655{
656 usX2Ydev_t* usX2Y = urb->context;
657
658 if (urb->status) {
659 snd_printk("snd_usX2Y_04Int() urb->status=%i\n", urb->status);
660 }
661 if (0 == --usX2Y->US04->len)
662 wake_up(&usX2Y->In04WaitQueue);
663}
664
665static int usX2Y_rate_set(usX2Ydev_t *usX2Y, int rate)
666{
667 int err = 0, i;
668 snd_usX2Y_urbSeq_t *us = NULL;
669 int *usbdata = NULL;
670 struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100;
671
672 if (usX2Y->rate != rate) {
673 us = kmalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL);
674 if (NULL == us) {
675 err = -ENOMEM;
676 goto cleanup;
677 }
678 memset(us, 0, sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS);
679 usbdata = kmalloc(sizeof(int)*NOOF_SETRATE_URBS, GFP_KERNEL);
680 if (NULL == usbdata) {
681 err = -ENOMEM;
682 goto cleanup;
683 }
684 for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
685 if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) {
686 err = -ENOMEM;
687 goto cleanup;
688 }
689 ((char*)(usbdata + i))[0] = ra[i].c1;
690 ((char*)(usbdata + i))[1] = ra[i].c2;
691 usb_fill_bulk_urb(us->urb[i], usX2Y->chip.dev, usb_sndbulkpipe(usX2Y->chip.dev, 4),
692 usbdata + i, 2, i_usX2Y_04Int, usX2Y);
693#ifdef OLD_USB
694 us->urb[i]->transfer_flags = USB_QUEUE_BULK;
695#endif
696 }
697 us->submitted = 0;
698 us->len = NOOF_SETRATE_URBS;
699 usX2Y->US04 = us;
700 wait_event_timeout(usX2Y->In04WaitQueue, 0 == us->len, HZ);
701 usX2Y->US04 = NULL;
702 if (us->len)
703 err = -ENODEV;
704 cleanup:
705 if (us) {
706 us->submitted = 2*NOOF_SETRATE_URBS;
707 for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
708 struct urb *urb = us->urb[i];
709 if (urb->status) {
710 if (!err)
711 err = -ENODEV;
712 usb_kill_urb(urb);
713 }
714 usb_free_urb(urb);
715 }
716 usX2Y->US04 = NULL;
717 kfree(usbdata);
718 kfree(us);
719 if (!err) {
720 usX2Y->rate = rate;
721 }
722 }
723 }
724
725 return err;
726}
727
728
729static int usX2Y_format_set(usX2Ydev_t *usX2Y, snd_pcm_format_t format)
730{
731 int alternate, err;
732 struct list_head* p;
733 if (format == SNDRV_PCM_FORMAT_S24_3LE) {
734 alternate = 2;
735 usX2Y->stride = 6;
736 } else {
737 alternate = 1;
738 usX2Y->stride = 4;
739 }
740 list_for_each(p, &usX2Y->chip.midi_list) {
741 snd_usbmidi_input_stop(p);
742 }
743 usb_kill_urb(usX2Y->In04urb);
744 if ((err = usb_set_interface(usX2Y->chip.dev, 0, alternate))) {
745 snd_printk("usb_set_interface error \n");
746 return err;
747 }
748 usX2Y->In04urb->dev = usX2Y->chip.dev;
749 err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL);
750 list_for_each(p, &usX2Y->chip.midi_list) {
751 snd_usbmidi_input_start(p);
752 }
753 usX2Y->format = format;
754 usX2Y->rate = 0;
755 return err;
756}
757
758
759static int snd_usX2Y_pcm_hw_params(snd_pcm_substream_t *substream,
760 snd_pcm_hw_params_t *hw_params)
761{
762 int err = 0;
763 unsigned int rate = params_rate(hw_params);
764 snd_pcm_format_t format = params_format(hw_params);
765 snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params);
766
767 { // all pcm substreams off one usX2Y have to operate at the same rate & format
768 snd_card_t *card = substream->pstr->pcm->card;
769 struct list_head *list;
770 list_for_each(list, &card->devices) {
771 snd_device_t *dev;
772 snd_pcm_t *pcm;
773 int s;
774 dev = snd_device(list);
775 if (dev->type != SNDRV_DEV_PCM)
776 continue;
777 pcm = dev->device_data;
778 for (s = 0; s < 2; ++s) {
779 snd_pcm_substream_t *test_substream;
780 test_substream = pcm->streams[s].substream;
781 if (test_substream && test_substream != substream &&
782 test_substream->runtime &&
783 ((test_substream->runtime->format &&
784 test_substream->runtime->format != format) ||
785 (test_substream->runtime->rate &&
786 test_substream->runtime->rate != rate)))
787 return -EINVAL;
788 }
789 }
790 }
791 if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) {
792 snd_printk("snd_pcm_lib_malloc_pages(%p, %i) returned %i\n", substream, params_buffer_bytes(hw_params), err);
793 return err;
794 }
795 return 0;
796}
797
798/*
799 * free the buffer
800 */
801static int snd_usX2Y_pcm_hw_free(snd_pcm_substream_t *substream)
802{
803 snd_pcm_runtime_t *runtime = substream->runtime;
804 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
805 down(&subs->usX2Y->prepare_mutex);
806 snd_printdd("snd_usX2Y_hw_free(%p)\n", substream);
807
808 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
809 snd_usX2Y_substream_t *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
810 atomic_set(&subs->state, state_STOPPED);
811 usX2Y_urbs_release(subs);
812 if (!cap_subs->pcm_substream ||
813 !cap_subs->pcm_substream->runtime ||
814 !cap_subs->pcm_substream->runtime->status ||
815 cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) {
816 atomic_set(&cap_subs->state, state_STOPPED);
817 usX2Y_urbs_release(cap_subs);
818 }
819 } else {
820 snd_usX2Y_substream_t *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
821 if (atomic_read(&playback_subs->state) < state_PREPARED) {
822 atomic_set(&subs->state, state_STOPPED);
823 usX2Y_urbs_release(subs);
824 }
825 }
826 up(&subs->usX2Y->prepare_mutex);
827 return snd_pcm_lib_free_pages(substream);
828}
829/*
830 * prepare callback
831 *
832 * set format and initialize urbs
833 */
834static int snd_usX2Y_pcm_prepare(snd_pcm_substream_t *substream)
835{
836 snd_pcm_runtime_t *runtime = substream->runtime;
837 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
838 usX2Ydev_t *usX2Y = subs->usX2Y;
839 snd_usX2Y_substream_t *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
840 int err = 0;
841 snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream);
842
843 down(&usX2Y->prepare_mutex);
844 usX2Y_subs_prepare(subs);
845// Start hardware streams
846// SyncStream first....
847 if (atomic_read(&capsubs->state) < state_PREPARED) {
848 if (usX2Y->format != runtime->format)
849 if ((err = usX2Y_format_set(usX2Y, runtime->format)) < 0)
850 goto up_prepare_mutex;
851 if (usX2Y->rate != runtime->rate)
852 if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0)
853 goto up_prepare_mutex;
854 snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe");
855 if (0 > (err = usX2Y_urbs_start(capsubs)))
856 goto up_prepare_mutex;
857 }
858
859 if (subs != capsubs && atomic_read(&subs->state) < state_PREPARED)
860 err = usX2Y_urbs_start(subs);
861
862 up_prepare_mutex:
863 up(&usX2Y->prepare_mutex);
864 return err;
865}
866
867static snd_pcm_hardware_t snd_usX2Y_2c =
868{
869 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
870 SNDRV_PCM_INFO_BLOCK_TRANSFER |
871 SNDRV_PCM_INFO_MMAP_VALID),
872 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE,
873 .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
874 .rate_min = 44100,
875 .rate_max = 48000,
876 .channels_min = 2,
877 .channels_max = 2,
878 .buffer_bytes_max = (2*128*1024),
879 .period_bytes_min = 64,
880 .period_bytes_max = (128*1024),
881 .periods_min = 2,
882 .periods_max = 1024,
883 .fifo_size = 0
884};
885
886
887
888static int snd_usX2Y_pcm_open(snd_pcm_substream_t *substream)
889{
890 snd_usX2Y_substream_t *subs = ((snd_usX2Y_substream_t **)
891 snd_pcm_substream_chip(substream))[substream->stream];
892 snd_pcm_runtime_t *runtime = substream->runtime;
893
894 if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS)
895 return -EBUSY;
896
897 runtime->hw = snd_usX2Y_2c;
898 runtime->private_data = subs;
899 subs->pcm_substream = substream;
900 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000);
901 return 0;
902}
903
904
905
906static int snd_usX2Y_pcm_close(snd_pcm_substream_t *substream)
907{
908 snd_pcm_runtime_t *runtime = substream->runtime;
909 snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
910 int err = 0;
911
912 subs->pcm_substream = NULL;
913
914 return err;
915}
916
917
918static snd_pcm_ops_t snd_usX2Y_pcm_ops =
919{
920 .open = snd_usX2Y_pcm_open,
921 .close = snd_usX2Y_pcm_close,
922 .ioctl = snd_pcm_lib_ioctl,
923 .hw_params = snd_usX2Y_pcm_hw_params,
924 .hw_free = snd_usX2Y_pcm_hw_free,
925 .prepare = snd_usX2Y_pcm_prepare,
926 .trigger = snd_usX2Y_pcm_trigger,
927 .pointer = snd_usX2Y_pcm_pointer,
928};
929
930
931/*
932 * free a usb stream instance
933 */
934static void usX2Y_audio_stream_free(snd_usX2Y_substream_t **usX2Y_substream)
935{
936 if (NULL != usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]) {
937 kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]);
938 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL;
939 }
940 kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]);
941 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL;
942}
943
944static void snd_usX2Y_pcm_private_free(snd_pcm_t *pcm)
945{
946 snd_usX2Y_substream_t **usX2Y_stream = pcm->private_data;
947 if (usX2Y_stream) {
948 snd_pcm_lib_preallocate_free_for_all(pcm);
949 usX2Y_audio_stream_free(usX2Y_stream);
950 }
951}
952
953static int usX2Y_audio_stream_new(snd_card_t *card, int playback_endpoint, int capture_endpoint)
954{
955 snd_pcm_t *pcm;
956 int err, i;
957 snd_usX2Y_substream_t **usX2Y_substream =
958 usX2Y(card)->subs + 2 * usX2Y(card)->chip.pcm_devs;
959
960 for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
961 i <= SNDRV_PCM_STREAM_CAPTURE; ++i) {
962 usX2Y_substream[i] = kcalloc(1, sizeof(snd_usX2Y_substream_t), GFP_KERNEL);
963 if (NULL == usX2Y_substream[i]) {
964 snd_printk(KERN_ERR "cannot malloc\n");
965 return -ENOMEM;
966 }
967 usX2Y_substream[i]->usX2Y = usX2Y(card);
968 }
969
970 if (playback_endpoint)
971 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]->endpoint = playback_endpoint;
972 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]->endpoint = capture_endpoint;
973
974 err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usX2Y(card)->chip.pcm_devs,
975 playback_endpoint ? 1 : 0, 1,
976 &pcm);
977 if (err < 0) {
978 usX2Y_audio_stream_free(usX2Y_substream);
979 return err;
980 }
981
982 if (playback_endpoint)
983 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usX2Y_pcm_ops);
984 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usX2Y_pcm_ops);
985
986 pcm->private_data = usX2Y_substream;
987 pcm->private_free = snd_usX2Y_pcm_private_free;
988 pcm->info_flags = 0;
989
990 sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->chip.pcm_devs);
991
992 if ((playback_endpoint &&
993 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
994 SNDRV_DMA_TYPE_CONTINUOUS,
995 snd_dma_continuous_data(GFP_KERNEL),
996 64*1024, 128*1024))) ||
997 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
998 SNDRV_DMA_TYPE_CONTINUOUS,
999 snd_dma_continuous_data(GFP_KERNEL),
1000 64*1024, 128*1024))) {
1001 snd_usX2Y_pcm_private_free(pcm);
1002 return err;
1003 }
1004 usX2Y(card)->chip.pcm_devs++;
1005
1006 return 0;
1007}
1008
1009/*
1010 * create a chip instance and set its names.
1011 */
1012int usX2Y_audio_create(snd_card_t* card)
1013{
1014 int err = 0;
1015
1016 INIT_LIST_HEAD(&usX2Y(card)->chip.pcm_list);
1017
1018 if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8)))
1019 return err;
1020 if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) == USB_ID_US428)
1021 if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA)))
1022 return err;
1023 if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) != USB_ID_US122)
1024 err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122.
1025 return err;
1026}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-16 02:11:20 -0500