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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / usb / usx2y / usbusx2yaudio.c
CommitLineData
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
1da177e4 34#include <linux/interrupt.h>
5a0e3ad6 35#include <linux/slab.h>
1da177e4
LT		 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
bbe85bbd 70static int usX2Y_urb_capt_retire(struct snd_usX2Y_substream *subs)
1da177e4
LT		 71{
72 struct urb *urb = subs->completed_urb;
bbe85bbd 73 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
1da177e4
LT		 74 unsigned char *cp;
75 int i, len, lens = 0, hwptr_done = subs->hwptr_done;
bbe85bbd 76 struct usX2Ydev *usX2Y = subs->usX2Y;
1da177e4
LT		 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 */
bbe85bbd
TI		 81 snd_printk(KERN_ERR "active frame status %i. "
82 "Most propably some hardware problem.\n",
83 urb->iso_frame_desc[i].status);
1da177e4
LT		 84 return urb->iso_frame_desc[i].status;
85 }
86 len = urb->iso_frame_desc[i].actual_length / usX2Y->stride;
87 if (! len) {
88 snd_printd("0 == len ERROR!\n");
89 continue;
90 }
91
92 /* copy a data chunk */
93 if ((hwptr_done + len) > runtime->buffer_size) {
94 int cnt = runtime->buffer_size - hwptr_done;
95 int blen = cnt * usX2Y->stride;
96 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, blen);
97 memcpy(runtime->dma_area, cp + blen, len * usX2Y->stride - blen);
98 } else {
bbe85bbd
TI		 99 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp,
100 len * usX2Y->stride);
1da177e4
LT		 101 }
102 lens += len;
103 if ((hwptr_done += len) >= runtime->buffer_size)
104 hwptr_done -= runtime->buffer_size;
105 }
106
107 subs->hwptr_done = hwptr_done;
108 subs->transfer_done += lens;
109 /* update the pointer, call callback if necessary */
110 if (subs->transfer_done >= runtime->period_size) {
111 subs->transfer_done -= runtime->period_size;
112 snd_pcm_period_elapsed(subs->pcm_substream);
113 }
114 return 0;
115}
116/*
117 * prepare urb for playback data pipe
118 *
119 * we copy the data directly from the pcm buffer.
120 * the current position to be copied is held in hwptr field.
121 * since a urb can handle only a single linear buffer, if the total
122 * transferred area overflows the buffer boundary, we cannot send
123 * it directly from the buffer. thus the data is once copied to
124 * a temporary buffer and urb points to that.
125 */
bbe85bbd 126static int usX2Y_urb_play_prepare(struct snd_usX2Y_substream *subs,
1da177e4
LT		 127 struct urb *cap_urb,
128 struct urb *urb)
129{
130 int count, counts, pack;
bbe85bbd
TI		 131 struct usX2Ydev *usX2Y = subs->usX2Y;
132 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
1da177e4
LT		 133
134 count = 0;
135 for (pack = 0; pack < nr_of_packs(); pack++) {
136 /* calculate the size of a packet */
137 counts = cap_urb->iso_frame_desc[pack].actual_length / usX2Y->stride;
138 count += counts;
139 if (counts < 43 || counts > 50) {
d3d579f8 140 snd_printk(KERN_ERR "should not be here with counts=%i\n", counts);
1da177e4
LT		 141 return -EPIPE;
142 }
143 /* set up descriptor */
144 urb->iso_frame_desc[pack].offset = pack ?
bbe85bbd
TI		 145 urb->iso_frame_desc[pack - 1].offset +
146 urb->iso_frame_desc[pack - 1].length :
1da177e4
LT		 147 0;
148 urb->iso_frame_desc[pack].length = cap_urb->iso_frame_desc[pack].actual_length;
149 }
150 if (atomic_read(&subs->state) >= state_PRERUNNING)
151 if (subs->hwptr + count > runtime->buffer_size) {
152 /* err, the transferred area goes over buffer boundary.
153 * copy the data to the temp buffer.
154 */
155 int len;
156 len = runtime->buffer_size - subs->hwptr;
157 urb->transfer_buffer = subs->tmpbuf;
bbe85bbd
TI		 158 memcpy(subs->tmpbuf, runtime->dma_area +
159 subs->hwptr * usX2Y->stride, len * usX2Y->stride);
160 memcpy(subs->tmpbuf + len * usX2Y->stride,
161 runtime->dma_area, (count - len) * usX2Y->stride);
1da177e4
LT		 162 subs->hwptr += count;
163 subs->hwptr -= runtime->buffer_size;
164 } else {
165 /* set the buffer pointer */
166 urb->transfer_buffer = runtime->dma_area + subs->hwptr * usX2Y->stride;
167 if ((subs->hwptr += count) >= runtime->buffer_size)
168 subs->hwptr -= runtime->buffer_size;
169 }
170 else
171 urb->transfer_buffer = subs->tmpbuf;
172 urb->transfer_buffer_length = count * usX2Y->stride;
173 return 0;
174}
175
176/*
177 * process after playback data complete
178 *
179 * update the current position and call callback if a period is processed.
180 */
bbe85bbd 181static void usX2Y_urb_play_retire(struct snd_usX2Y_substream *subs, struct urb *urb)
1da177e4 182{
bbe85bbd 183 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
1da177e4
LT		 184 int len = urb->actual_length / subs->usX2Y->stride;
185
186 subs->transfer_done += len;
187 subs->hwptr_done += len;
188 if (subs->hwptr_done >= runtime->buffer_size)
189 subs->hwptr_done -= runtime->buffer_size;
190 if (subs->transfer_done >= runtime->period_size) {
191 subs->transfer_done -= runtime->period_size;
192 snd_pcm_period_elapsed(subs->pcm_substream);
193 }
194}
195
bbe85bbd 196static int usX2Y_urb_submit(struct snd_usX2Y_substream *subs, struct urb *urb, int frame)
1da177e4
LT		 197{
198 int err;
199 if (!urb)
200 return -ENODEV;
201 urb->start_frame = (frame + NRURBS * nr_of_packs()); // let hcd do rollover sanity checks
202 urb->hcpriv = NULL;
a014bbad 203 urb->dev = subs->usX2Y->dev; /* we need to set this at each time */
1da177e4 204 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
d3d579f8 205 snd_printk(KERN_ERR "usb_submit_urb() returned %i\n", err);
1da177e4
LT		 206 return err;
207 }
208 return 0;
209}
210
bbe85bbd
TI		 211static inline int usX2Y_usbframe_complete(struct snd_usX2Y_substream *capsubs,
212 struct snd_usX2Y_substream *playbacksubs,
213 int frame)
1da177e4
LT		 214{
215 int err, state;
cb432379
TI		 216 struct urb *urb = playbacksubs->completed_urb;
217
218 state = atomic_read(&playbacksubs->state);
219 if (NULL != urb) {
220 if (state == state_RUNNING)
221 usX2Y_urb_play_retire(playbacksubs, urb);
bbe85bbd
TI		 222 else if (state >= state_PRERUNNING)
223 atomic_inc(&playbacksubs->state);
cb432379
TI		 224 } else {
225 switch (state) {
226 case state_STARTING1:
227 urb = playbacksubs->urb[0];
228 atomic_inc(&playbacksubs->state);
229 break;
230 case state_STARTING2:
231 urb = playbacksubs->urb[1];
232 atomic_inc(&playbacksubs->state);
233 break;
1da177e4 234 }
1da177e4 235 }
cb432379
TI		 236 if (urb) {
237 if ((err = usX2Y_urb_play_prepare(playbacksubs, capsubs->completed_urb, urb)) ||
bbe85bbd 238 (err = usX2Y_urb_submit(playbacksubs, urb, frame))) {
cb432379 239 return err;
bbe85bbd 240 }
cb432379
TI		 241 }
242
243 playbacksubs->completed_urb = NULL;
244
1da177e4
LT		 245 state = atomic_read(&capsubs->state);
246 if (state >= state_PREPARED) {
247 if (state == state_RUNNING) {
248 if ((err = usX2Y_urb_capt_retire(capsubs)))
249 return err;
cb432379
TI		 250 } else if (state >= state_PRERUNNING)
251 atomic_inc(&capsubs->state);
1da177e4
LT		 252 if ((err = usX2Y_urb_submit(capsubs, capsubs->completed_urb, frame)))
253 return err;
254 }
255 capsubs->completed_urb = NULL;
256 return 0;
257}
258
259
bbe85bbd 260static void usX2Y_clients_stop(struct usX2Ydev *usX2Y)
1da177e4
LT		 261{
262 int s, u;
bbe85bbd 263
1da177e4 264 for (s = 0; s < 4; s++) {
bbe85bbd 265 struct snd_usX2Y_substream *subs = usX2Y->subs[s];
1da177e4
LT		 266 if (subs) {
267 snd_printdd("%i %p state=%i\n", s, subs, atomic_read(&subs->state));
268 atomic_set(&subs->state, state_STOPPED);
269 }
270 }
271 for (s = 0; s < 4; s++) {
bbe85bbd 272 struct snd_usX2Y_substream *subs = usX2Y->subs[s];
1da177e4
LT		 273 if (subs) {
274 if (atomic_read(&subs->state) >= state_PRERUNNING) {
275 snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
276 }
277 for (u = 0; u < NRURBS; u++) {
278 struct urb *urb = subs->urb[u];
279 if (NULL != urb)
bbe85bbd
TI		 280 snd_printdd("%i status=%i start_frame=%i\n",
281 u, urb->status, urb->start_frame);
1da177e4
LT		 282 }
283 }
284 }
285 usX2Y->prepare_subs = NULL;
286 wake_up(&usX2Y->prepare_wait_queue);
287}
288
bbe85bbd
TI		 289static void usX2Y_error_urb_status(struct usX2Ydev *usX2Y,
290 struct snd_usX2Y_substream *subs, struct urb *urb)
1da177e4 291{
d3d579f8 292 snd_printk(KERN_ERR "ep=%i stalled with status=%i\n", subs->endpoint, urb->status);
1da177e4
LT		 293 urb->status = 0;
294 usX2Y_clients_stop(usX2Y);
295}
296
bbe85bbd
TI		 297static void usX2Y_error_sequence(struct usX2Ydev *usX2Y,
298 struct snd_usX2Y_substream *subs, struct urb *urb)
1da177e4 299{
ad361c98
JP		 300 snd_printk(KERN_ERR
301"Sequence Error!(hcd_frame=%i ep=%i%s;wait=%i,frame=%i).\n"
302"Most propably some urb of usb-frame %i is still missing.\n"
303"Cause could be too long delays in usb-hcd interrupt handling.\n",
a014bbad 304 usb_get_current_frame_number(usX2Y->dev),
bbe85bbd
TI		 305 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out",
306 usX2Y->wait_iso_frame, urb->start_frame, usX2Y->wait_iso_frame);
1da177e4
LT		 307 usX2Y_clients_stop(usX2Y);
308}
309
7d12e780 310static void i_usX2Y_urb_complete(struct urb *urb)
1da177e4 311{
bbe85bbd
TI		 312 struct snd_usX2Y_substream *subs = urb->context;
313 struct usX2Ydev *usX2Y = subs->usX2Y;
1da177e4
LT		 314
315 if (unlikely(atomic_read(&subs->state) < state_PREPARED)) {
bbe85bbd 316 snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n",
a014bbad 317 usb_get_current_frame_number(usX2Y->dev),
bbe85bbd
TI		 318 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out",
319 urb->status, urb->start_frame);
1da177e4
LT		 320 return;
321 }
322 if (unlikely(urb->status)) {
323 usX2Y_error_urb_status(usX2Y, subs, urb);
324 return;
325 }
bc6191b1 326 if (likely((urb->start_frame & 0xFFFF) == (usX2Y->wait_iso_frame & 0xFFFF)))
1da177e4
LT		 327 subs->completed_urb = urb;
328 else {
329 usX2Y_error_sequence(usX2Y, subs, urb);
330 return;
331 }
332 {
bbe85bbd 333 struct snd_usX2Y_substream *capsubs = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE],
1da177e4 334 *playbacksubs = usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
bbe85bbd
TI		 335 if (capsubs->completed_urb &&
336 atomic_read(&capsubs->state) >= state_PREPARED &&
337 (playbacksubs->completed_urb ||
338 atomic_read(&playbacksubs->state) < state_PREPARED)) {
635bbb35
KW		 339 if (!usX2Y_usbframe_complete(capsubs, playbacksubs, urb->start_frame))
340 usX2Y->wait_iso_frame += nr_of_packs();
341 else {
1da177e4
LT		 342 snd_printdd("\n");
343 usX2Y_clients_stop(usX2Y);
344 }
345 }
346 }
347}
348
bbe85bbd 349static void usX2Y_urbs_set_complete(struct usX2Ydev * usX2Y,
7d12e780 350 void (*complete)(struct urb *))
1da177e4
LT		 351{
352 int s, u;
353 for (s = 0; s < 4; s++) {
bbe85bbd 354 struct snd_usX2Y_substream *subs = usX2Y->subs[s];
1da177e4
LT		 355 if (NULL != subs)
356 for (u = 0; u < NRURBS; u++) {
357 struct urb * urb = subs->urb[u];
358 if (NULL != urb)
359 urb->complete = complete;
360 }
361 }
362}
363
bbe85bbd 364static void usX2Y_subs_startup_finish(struct usX2Ydev * usX2Y)
1da177e4
LT		 365{
366 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_urb_complete);
367 usX2Y->prepare_subs = NULL;
368}
369
7d12e780 370static void i_usX2Y_subs_startup(struct urb *urb)
1da177e4 371{
bbe85bbd
TI		 372 struct snd_usX2Y_substream *subs = urb->context;
373 struct usX2Ydev *usX2Y = subs->usX2Y;
374 struct snd_usX2Y_substream *prepare_subs = usX2Y->prepare_subs;
1da177e4
LT		 375 if (NULL != prepare_subs)
376 if (urb->start_frame == prepare_subs->urb[0]->start_frame) {
377 usX2Y_subs_startup_finish(usX2Y);
378 atomic_inc(&prepare_subs->state);
379 wake_up(&usX2Y->prepare_wait_queue);
380 }
381
7d12e780 382 i_usX2Y_urb_complete(urb);
1da177e4
LT		 383}
384
bbe85bbd 385static void usX2Y_subs_prepare(struct snd_usX2Y_substream *subs)
1da177e4 386{
bbe85bbd
TI		 387 snd_printdd("usX2Y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n",
388 subs, subs->endpoint, subs->urb[0], subs->urb[1]);
1da177e4
LT		 389 /* reset the pointer */
390 subs->hwptr = 0;
391 subs->hwptr_done = 0;
392 subs->transfer_done = 0;
393}
394
395
bbe85bbd 396static void usX2Y_urb_release(struct urb **urb, int free_tb)
1da177e4
LT		 397{
398 if (*urb) {
399 usb_kill_urb(*urb);
400 if (free_tb)
401 kfree((*urb)->transfer_buffer);
402 usb_free_urb(*urb);
403 *urb = NULL;
404 }
405}
406/*
407 * release a substreams urbs
408 */
bbe85bbd 409static void usX2Y_urbs_release(struct snd_usX2Y_substream *subs)
1da177e4
LT		 410{
411 int i;
412 snd_printdd("usX2Y_urbs_release() %i\n", subs->endpoint);
413 for (i = 0; i < NRURBS; i++)
bbe85bbd
TI		 414 usX2Y_urb_release(subs->urb + i,
415 subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]);
1da177e4 416
4d572776
JJ		 417 kfree(subs->tmpbuf);
418 subs->tmpbuf = NULL;
1da177e4
LT		 419}
420/*
421 * initialize a substream's urbs
422 */
bbe85bbd 423static int usX2Y_urbs_allocate(struct snd_usX2Y_substream *subs)
1da177e4
LT		 424{
425 int i;
426 unsigned int pipe;
427 int is_playback = subs == subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
a014bbad 428 struct usb_device *dev = subs->usX2Y->dev;
1da177e4
LT		 429
430 pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
431 usb_rcvisocpipe(dev, subs->endpoint);
432 subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
433 if (!subs->maxpacksize)
434 return -EINVAL;
435
436 if (is_playback && NULL == subs->tmpbuf) { /* allocate a temporary buffer for playback */
437 subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL);
438 if (NULL == subs->tmpbuf) {
439 snd_printk(KERN_ERR "cannot malloc tmpbuf\n");
440 return -ENOMEM;
441 }
442 }
443 /* allocate and initialize data urbs */
444 for (i = 0; i < NRURBS; i++) {
cb432379 445 struct urb **purb = subs->urb + i;
1da177e4
LT		 446 if (*purb) {
447 usb_kill_urb(*purb);
448 continue;
449 }
450 *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL);
451 if (NULL == *purb) {
452 usX2Y_urbs_release(subs);
453 return -ENOMEM;
454 }
455 if (!is_playback && !(*purb)->transfer_buffer) {
456 /* allocate a capture buffer per urb */
457 (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL);
458 if (NULL == (*purb)->transfer_buffer) {
459 usX2Y_urbs_release(subs);
460 return -ENOMEM;
461 }
462 }
463 (*purb)->dev = dev;
464 (*purb)->pipe = pipe;
465 (*purb)->number_of_packets = nr_of_packs();
466 (*purb)->context = subs;
467 (*purb)->interval = 1;
468 (*purb)->complete = i_usX2Y_subs_startup;
469 }
470 return 0;
471}
472
bbe85bbd 473static void usX2Y_subs_startup(struct snd_usX2Y_substream *subs)
1da177e4 474{
bbe85bbd 475 struct usX2Ydev *usX2Y = subs->usX2Y;
1da177e4
LT		 476 usX2Y->prepare_subs = subs;
477 subs->urb[0]->start_frame = -1;
478 wmb();
479 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup);
480}
481
bbe85bbd 482static int usX2Y_urbs_start(struct snd_usX2Y_substream *subs)
1da177e4
LT		 483{
484 int i, err;
bbe85bbd 485 struct usX2Ydev *usX2Y = subs->usX2Y;
1da177e4
LT		 486
487 if ((err = usX2Y_urbs_allocate(subs)) < 0)
488 return err;
489 subs->completed_urb = NULL;
490 for (i = 0; i < 4; i++) {
bbe85bbd 491 struct snd_usX2Y_substream *subs = usX2Y->subs[i];
1da177e4
LT		 492 if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED)
493 goto start;
494 }
cb432379 495
1da177e4 496 start:
cb432379
TI		 497 usX2Y_subs_startup(subs);
498 for (i = 0; i < NRURBS; i++) {
499 struct urb *urb = subs->urb[i];
500 if (usb_pipein(urb->pipe)) {
501 unsigned long pack;
502 if (0 == i)
503 atomic_set(&subs->state, state_STARTING3);
a014bbad 504 urb->dev = usX2Y->dev;
cb432379
TI		 505 urb->transfer_flags = URB_ISO_ASAP;
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;
635bbb35
KW		 515 } else
516 if (i == 0)
cb432379 517 usX2Y->wait_iso_frame = urb->start_frame;
cb432379
TI		 518 urb->transfer_flags = 0;
519 } else {
520 atomic_set(&subs->state, state_STARTING1);
521 break;
1da177e4 522 }
cb432379
TI		 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
1da177e4
LT		 533 }
534 return err;
535}
536
537/*
538 * return the current pcm pointer. just return the hwptr_done value.
539 */
bbe85bbd 540static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(struct snd_pcm_substream *substream)
1da177e4 541{
bbe85bbd 542 struct snd_usX2Y_substream *subs = substream->runtime->private_data;
1da177e4
LT		 543 return subs->hwptr_done;
544}
545/*
546 * start/stop substream
547 */
bbe85bbd 548static int snd_usX2Y_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1da177e4 549{
bbe85bbd 550 struct snd_usX2Y_substream *subs = substream->runtime->private_data;
1da177e4
LT		 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 */
583static 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};
623static 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
7d12e780 661static void i_usX2Y_04Int(struct urb *urb)
1da177e4 662{
bbe85bbd 663 struct usX2Ydev *usX2Y = urb->context;
1da177e4 664
d3d579f8
TI		 665 if (urb->status)
666 snd_printk(KERN_ERR "snd_usX2Y_04Int() urb->status=%i\n", urb->status);
1da177e4
LT		 667 if (0 == --usX2Y->US04->len)
668 wake_up(&usX2Y->In04WaitQueue);
669}
670
bbe85bbd 671static int usX2Y_rate_set(struct usX2Ydev *usX2Y, int rate)
1da177e4
LT		 672{
673 int err = 0, i;
bbe85bbd 674 struct snd_usX2Y_urbSeq *us = NULL;
1da177e4
LT		 675 int *usbdata = NULL;
676 struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100;
677
678 if (usX2Y->rate != rate) {
cb432379 679 us = kzalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL);
1da177e4
LT		 680 if (NULL == us) {
681 err = -ENOMEM;
682 goto cleanup;
683 }
cb432379 684 usbdata = kmalloc(sizeof(int) * NOOF_SETRATE_URBS, GFP_KERNEL);
1da177e4
LT		 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;
a014bbad 696 usb_fill_bulk_urb(us->urb[i], usX2Y->dev, usb_sndbulkpipe(usX2Y->dev, 4),
1da177e4
LT		 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);
cb432379 724 if (!err)
1da177e4 725 usX2Y->rate = rate;
1da177e4
LT		 726 }
727 }
728
729 return err;
730}
731
732
bbe85bbd 733static int usX2Y_format_set(struct usX2Ydev *usX2Y, snd_pcm_format_t format)
1da177e4
LT		 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 }
d82af9f9 744 list_for_each(p, &usX2Y->midi_list) {
1da177e4
LT		 745 snd_usbmidi_input_stop(p);
746 }
747 usb_kill_urb(usX2Y->In04urb);
a014bbad 748 if ((err = usb_set_interface(usX2Y->dev, 0, alternate))) {
d3d579f8 749 snd_printk(KERN_ERR "usb_set_interface error \n");
1da177e4
LT		 750 return err;
751 }
a014bbad 752 usX2Y->In04urb->dev = usX2Y->dev;
1da177e4 753 err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL);
d82af9f9 754 list_for_each(p, &usX2Y->midi_list) {
1da177e4
LT		 755 snd_usbmidi_input_start(p);
756 }
757 usX2Y->format = format;
758 usX2Y->rate = 0;
759 return err;
760}
761
762
bbe85bbd
TI		 763static int snd_usX2Y_pcm_hw_params(struct snd_pcm_substream *substream,
764 struct snd_pcm_hw_params *hw_params)
1da177e4
LT		 765{
766 int err = 0;
767 unsigned int rate = params_rate(hw_params);
768 snd_pcm_format_t format = params_format(hw_params);
bbe85bbd
TI		 769 struct snd_card *card = substream->pstr->pcm->card;
770 struct list_head *list;
cb432379
TI		 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) {
bbe85bbd
TI		 775 struct snd_device *dev;
776 struct snd_pcm *pcm;
cb432379
TI		 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) {
bbe85bbd 783 struct snd_pcm_substream *test_substream;
cb432379
TI		 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;
1da177e4
LT		 792 }
793 }
794 if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) {
bbe85bbd
TI		 795 snd_printk(KERN_ERR "snd_pcm_lib_malloc_pages(%p, %i) returned %i\n",
796 substream, params_buffer_bytes(hw_params), err);
1da177e4
LT		 797 return err;
798 }
799 return 0;
800}
801
802/*
803 * free the buffer
804 */
bbe85bbd 805static int snd_usX2Y_pcm_hw_free(struct snd_pcm_substream *substream)
1da177e4 806{
bbe85bbd
TI		 807 struct snd_pcm_runtime *runtime = substream->runtime;
808 struct snd_usX2Y_substream *subs = runtime->private_data;
12aa7579 809 mutex_lock(&subs->usX2Y->prepare_mutex);
1da177e4
LT		 810 snd_printdd("snd_usX2Y_hw_free(%p)\n", substream);
811
812 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
bbe85bbd 813 struct snd_usX2Y_substream *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
1da177e4
LT		 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 {
bbe85bbd 824 struct snd_usX2Y_substream *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
1da177e4
LT		 825 if (atomic_read(&playback_subs->state) < state_PREPARED) {
826 atomic_set(&subs->state, state_STOPPED);
827 usX2Y_urbs_release(subs);
828 }
829 }
12aa7579 830 mutex_unlock(&subs->usX2Y->prepare_mutex);
1da177e4
LT		 831 return snd_pcm_lib_free_pages(substream);
832}
833/*
834 * prepare callback
835 *
836 * set format and initialize urbs
837 */
bbe85bbd 838static int snd_usX2Y_pcm_prepare(struct snd_pcm_substream *substream)
1da177e4 839{
bbe85bbd
TI		 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];
1da177e4
LT		 844 int err = 0;
845 snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream);
846
12aa7579 847 mutex_lock(&usX2Y->prepare_mutex);
1da177e4
LT		 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:
12aa7579 867 mutex_unlock(&usX2Y->prepare_mutex);
1da177e4
LT		 868 return err;
869}
870
bbe85bbd 871static struct snd_pcm_hardware snd_usX2Y_2c =
1da177e4
LT		 872{
873 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
874 SNDRV_PCM_INFO_BLOCK_TRANSFER |
2008f137
TI		 875 SNDRV_PCM_INFO_MMAP_VALID |
876 SNDRV_PCM_INFO_BATCH),
1da177e4
LT		 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
bbe85bbd 893static int snd_usX2Y_pcm_open(struct snd_pcm_substream *substream)
1da177e4 894{
bbe85bbd 895 struct snd_usX2Y_substream *subs = ((struct snd_usX2Y_substream **)
1da177e4 896 snd_pcm_substream_chip(substream))[substream->stream];
bbe85bbd 897 struct snd_pcm_runtime *runtime = substream->runtime;
1da177e4
LT		 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
bbe85bbd 911static int snd_usX2Y_pcm_close(struct snd_pcm_substream *substream)
1da177e4 912{
bbe85bbd
TI		 913 struct snd_pcm_runtime *runtime = substream->runtime;
914 struct snd_usX2Y_substream *subs = runtime->private_data;
1da177e4
LT		 915
916 subs->pcm_substream = NULL;
917
bbe85bbd 918 return 0;
1da177e4
LT		 919}
920
921
bbe85bbd 922static struct snd_pcm_ops snd_usX2Y_pcm_ops =
1da177e4
LT		 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 */
bbe85bbd 938static void usX2Y_audio_stream_free(struct snd_usX2Y_substream **usX2Y_substream)
1da177e4 939{
c111b8de
RK		 940 kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]);
941 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL;
942
1da177e4
LT		 943 kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]);
944 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL;
945}
946
bbe85bbd 947static void snd_usX2Y_pcm_private_free(struct snd_pcm *pcm)
1da177e4 948{
bbe85bbd 949 struct snd_usX2Y_substream **usX2Y_stream = pcm->private_data;
c3e6f7d8 950 if (usX2Y_stream)
1da177e4 951 usX2Y_audio_stream_free(usX2Y_stream);
1da177e4
LT		 952}
953
bbe85bbd 954static int usX2Y_audio_stream_new(struct snd_card *card, int playback_endpoint, int capture_endpoint)
1da177e4 955{
bbe85bbd 956 struct snd_pcm *pcm;
1da177e4 957 int err, i;
bbe85bbd 958 struct snd_usX2Y_substream **usX2Y_substream =
a014bbad 959 usX2Y(card)->subs + 2 * usX2Y(card)->pcm_devs;
1da177e4
LT		 960
961 for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
962 i <= SNDRV_PCM_STREAM_CAPTURE; ++i) {
bbe85bbd 963 usX2Y_substream[i] = kzalloc(sizeof(struct snd_usX2Y_substream), GFP_KERNEL);
1da177e4
LT		 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
a014bbad 975 err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usX2Y(card)->pcm_devs,
1da177e4
LT		 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
a014bbad 991 sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->pcm_devs);
1da177e4
LT		 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 }
a014bbad 1005 usX2Y(card)->pcm_devs++;
1da177e4
LT		 1006
1007 return 0;
1008}
1009
1010/*
1011 * create a chip instance and set its names.
1012 */
bbe85bbd 1013int usX2Y_audio_create(struct snd_card *card)
1da177e4
LT		 1014{
1015 int err = 0;
1016
a014bbad 1017 INIT_LIST_HEAD(&usX2Y(card)->pcm_list);
1da177e4
LT		 1018
1019 if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8)))
1020 return err;
a014bbad 1021 if (le16_to_cpu(usX2Y(card)->dev->descriptor.idProduct) == USB_ID_US428)
1da177e4
LT		 1022 if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA)))
1023 return err;
a014bbad 1024 if (le16_to_cpu(usX2Y(card)->dev->descriptor.idProduct) != USB_ID_US122)
1da177e4
LT		 1025 err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122.
1026 return err;
1027}
kernel source for telekom puls (alcatel/mediatek)