Commit | Line | Data |
---|---|---|
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 | ||
70 | static 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 | */ | |
123 | static 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 | */ | |
175 | static 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 | ||
190 | static 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 | ||
205 | static 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 | ||
257 | static 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 | ||
284 | static 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 | ||
291 | static 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 | ||
301 | static 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 | ||
339 | static 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 | ||
353 | static 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 | ||
359 | static 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 | ||
374 | static 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 | ||
384 | static 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 | */ | |
397 | static 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 | */ | |
410 | static 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 | ||
460 | static 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 | ||
469 | static 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 | */ | |
531 | static 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 | */ | |
539 | static 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 | */ | |
574 | static 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 | }; | |
614 | static 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 | ||
652 | static void i_usX2Y_04Int(struct urb* urb, struct pt_regs *regs) | |
653 | { | |
654 | usX2Ydev_t* usX2Y = urb->context; | |
655 | ||
656 | if (urb->status) { | |
657 | snd_printk("snd_usX2Y_04Int() urb->status=%i\n", urb->status); | |
658 | } | |
659 | if (0 == --usX2Y->US04->len) | |
660 | wake_up(&usX2Y->In04WaitQueue); | |
661 | } | |
662 | ||
663 | static int usX2Y_rate_set(usX2Ydev_t *usX2Y, int rate) | |
664 | { | |
665 | int err = 0, i; | |
666 | snd_usX2Y_urbSeq_t *us = NULL; | |
667 | int *usbdata = NULL; | |
668 | struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100; | |
669 | ||
670 | if (usX2Y->rate != rate) { | |
671 | us = kmalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL); | |
672 | if (NULL == us) { | |
673 | err = -ENOMEM; | |
674 | goto cleanup; | |
675 | } | |
676 | memset(us, 0, sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS); | |
677 | usbdata = kmalloc(sizeof(int)*NOOF_SETRATE_URBS, GFP_KERNEL); | |
678 | if (NULL == usbdata) { | |
679 | err = -ENOMEM; | |
680 | goto cleanup; | |
681 | } | |
682 | for (i = 0; i < NOOF_SETRATE_URBS; ++i) { | |
683 | if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) { | |
684 | err = -ENOMEM; | |
685 | goto cleanup; | |
686 | } | |
687 | ((char*)(usbdata + i))[0] = ra[i].c1; | |
688 | ((char*)(usbdata + i))[1] = ra[i].c2; | |
689 | usb_fill_bulk_urb(us->urb[i], usX2Y->chip.dev, usb_sndbulkpipe(usX2Y->chip.dev, 4), | |
690 | usbdata + i, 2, i_usX2Y_04Int, usX2Y); | |
691 | #ifdef OLD_USB | |
692 | us->urb[i]->transfer_flags = USB_QUEUE_BULK; | |
693 | #endif | |
694 | } | |
695 | us->submitted = 0; | |
696 | us->len = NOOF_SETRATE_URBS; | |
697 | usX2Y->US04 = us; | |
698 | wait_event_timeout(usX2Y->In04WaitQueue, 0 == us->len, HZ); | |
699 | usX2Y->US04 = NULL; | |
700 | if (us->len) | |
701 | err = -ENODEV; | |
702 | cleanup: | |
703 | if (us) { | |
704 | us->submitted = 2*NOOF_SETRATE_URBS; | |
705 | for (i = 0; i < NOOF_SETRATE_URBS; ++i) { | |
706 | struct urb *urb = us->urb[i]; | |
707 | if (urb->status) { | |
708 | if (!err) | |
709 | err = -ENODEV; | |
710 | usb_kill_urb(urb); | |
711 | } | |
712 | usb_free_urb(urb); | |
713 | } | |
714 | usX2Y->US04 = NULL; | |
715 | kfree(usbdata); | |
716 | kfree(us); | |
717 | if (!err) { | |
718 | usX2Y->rate = rate; | |
719 | } | |
720 | } | |
721 | } | |
722 | ||
723 | return err; | |
724 | } | |
725 | ||
726 | ||
727 | static int usX2Y_format_set(usX2Ydev_t *usX2Y, snd_pcm_format_t format) | |
728 | { | |
729 | int alternate, err; | |
730 | struct list_head* p; | |
731 | if (format == SNDRV_PCM_FORMAT_S24_3LE) { | |
732 | alternate = 2; | |
733 | usX2Y->stride = 6; | |
734 | } else { | |
735 | alternate = 1; | |
736 | usX2Y->stride = 4; | |
737 | } | |
738 | list_for_each(p, &usX2Y->chip.midi_list) { | |
739 | snd_usbmidi_input_stop(p); | |
740 | } | |
741 | usb_kill_urb(usX2Y->In04urb); | |
742 | if ((err = usb_set_interface(usX2Y->chip.dev, 0, alternate))) { | |
743 | snd_printk("usb_set_interface error \n"); | |
744 | return err; | |
745 | } | |
746 | usX2Y->In04urb->dev = usX2Y->chip.dev; | |
747 | err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL); | |
748 | list_for_each(p, &usX2Y->chip.midi_list) { | |
749 | snd_usbmidi_input_start(p); | |
750 | } | |
751 | usX2Y->format = format; | |
752 | usX2Y->rate = 0; | |
753 | return err; | |
754 | } | |
755 | ||
756 | ||
757 | static int snd_usX2Y_pcm_hw_params(snd_pcm_substream_t *substream, | |
758 | snd_pcm_hw_params_t *hw_params) | |
759 | { | |
760 | int err = 0; | |
761 | unsigned int rate = params_rate(hw_params); | |
762 | snd_pcm_format_t format = params_format(hw_params); | |
763 | snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params); | |
764 | ||
765 | { // all pcm substreams off one usX2Y have to operate at the same rate & format | |
766 | snd_card_t *card = substream->pstr->pcm->card; | |
767 | struct list_head *list; | |
768 | list_for_each(list, &card->devices) { | |
769 | snd_device_t *dev; | |
770 | snd_pcm_t *pcm; | |
771 | int s; | |
772 | dev = snd_device(list); | |
773 | if (dev->type != SNDRV_DEV_PCM) | |
774 | continue; | |
775 | pcm = dev->device_data; | |
776 | for (s = 0; s < 2; ++s) { | |
777 | snd_pcm_substream_t *test_substream; | |
778 | test_substream = pcm->streams[s].substream; | |
779 | if (test_substream && test_substream != substream && | |
780 | test_substream->runtime && | |
781 | ((test_substream->runtime->format && | |
782 | test_substream->runtime->format != format) || | |
783 | (test_substream->runtime->rate && | |
784 | test_substream->runtime->rate != rate))) | |
785 | return -EINVAL; | |
786 | } | |
787 | } | |
788 | } | |
789 | if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) { | |
790 | snd_printk("snd_pcm_lib_malloc_pages(%p, %i) returned %i\n", substream, params_buffer_bytes(hw_params), err); | |
791 | return err; | |
792 | } | |
793 | return 0; | |
794 | } | |
795 | ||
796 | /* | |
797 | * free the buffer | |
798 | */ | |
799 | static int snd_usX2Y_pcm_hw_free(snd_pcm_substream_t *substream) | |
800 | { | |
801 | snd_pcm_runtime_t *runtime = substream->runtime; | |
802 | snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data; | |
803 | down(&subs->usX2Y->prepare_mutex); | |
804 | snd_printdd("snd_usX2Y_hw_free(%p)\n", substream); | |
805 | ||
806 | if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) { | |
807 | snd_usX2Y_substream_t *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; | |
808 | atomic_set(&subs->state, state_STOPPED); | |
809 | usX2Y_urbs_release(subs); | |
810 | if (!cap_subs->pcm_substream || | |
811 | !cap_subs->pcm_substream->runtime || | |
812 | !cap_subs->pcm_substream->runtime->status || | |
813 | cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) { | |
814 | atomic_set(&cap_subs->state, state_STOPPED); | |
815 | usX2Y_urbs_release(cap_subs); | |
816 | } | |
817 | } else { | |
818 | snd_usX2Y_substream_t *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]; | |
819 | if (atomic_read(&playback_subs->state) < state_PREPARED) { | |
820 | atomic_set(&subs->state, state_STOPPED); | |
821 | usX2Y_urbs_release(subs); | |
822 | } | |
823 | } | |
824 | up(&subs->usX2Y->prepare_mutex); | |
825 | return snd_pcm_lib_free_pages(substream); | |
826 | } | |
827 | /* | |
828 | * prepare callback | |
829 | * | |
830 | * set format and initialize urbs | |
831 | */ | |
832 | static int snd_usX2Y_pcm_prepare(snd_pcm_substream_t *substream) | |
833 | { | |
834 | snd_pcm_runtime_t *runtime = substream->runtime; | |
835 | snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data; | |
836 | usX2Ydev_t *usX2Y = subs->usX2Y; | |
837 | snd_usX2Y_substream_t *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]; | |
838 | int err = 0; | |
839 | snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream); | |
840 | ||
841 | down(&usX2Y->prepare_mutex); | |
842 | usX2Y_subs_prepare(subs); | |
843 | // Start hardware streams | |
844 | // SyncStream first.... | |
845 | if (atomic_read(&capsubs->state) < state_PREPARED) { | |
846 | if (usX2Y->format != runtime->format) | |
847 | if ((err = usX2Y_format_set(usX2Y, runtime->format)) < 0) | |
848 | goto up_prepare_mutex; | |
849 | if (usX2Y->rate != runtime->rate) | |
850 | if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0) | |
851 | goto up_prepare_mutex; | |
852 | snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe"); | |
853 | if (0 > (err = usX2Y_urbs_start(capsubs))) | |
854 | goto up_prepare_mutex; | |
855 | } | |
856 | ||
857 | if (subs != capsubs && atomic_read(&subs->state) < state_PREPARED) | |
858 | err = usX2Y_urbs_start(subs); | |
859 | ||
860 | up_prepare_mutex: | |
861 | up(&usX2Y->prepare_mutex); | |
862 | return err; | |
863 | } | |
864 | ||
865 | static snd_pcm_hardware_t snd_usX2Y_2c = | |
866 | { | |
867 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | | |
868 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
869 | SNDRV_PCM_INFO_MMAP_VALID), | |
870 | .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE, | |
871 | .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, | |
872 | .rate_min = 44100, | |
873 | .rate_max = 48000, | |
874 | .channels_min = 2, | |
875 | .channels_max = 2, | |
876 | .buffer_bytes_max = (2*128*1024), | |
877 | .period_bytes_min = 64, | |
878 | .period_bytes_max = (128*1024), | |
879 | .periods_min = 2, | |
880 | .periods_max = 1024, | |
881 | .fifo_size = 0 | |
882 | }; | |
883 | ||
884 | ||
885 | ||
886 | static int snd_usX2Y_pcm_open(snd_pcm_substream_t *substream) | |
887 | { | |
888 | snd_usX2Y_substream_t *subs = ((snd_usX2Y_substream_t **) | |
889 | snd_pcm_substream_chip(substream))[substream->stream]; | |
890 | snd_pcm_runtime_t *runtime = substream->runtime; | |
891 | ||
892 | if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS) | |
893 | return -EBUSY; | |
894 | ||
895 | runtime->hw = snd_usX2Y_2c; | |
896 | runtime->private_data = subs; | |
897 | subs->pcm_substream = substream; | |
898 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000); | |
899 | return 0; | |
900 | } | |
901 | ||
902 | ||
903 | ||
904 | static int snd_usX2Y_pcm_close(snd_pcm_substream_t *substream) | |
905 | { | |
906 | snd_pcm_runtime_t *runtime = substream->runtime; | |
907 | snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data; | |
908 | int err = 0; | |
909 | ||
910 | subs->pcm_substream = NULL; | |
911 | ||
912 | return err; | |
913 | } | |
914 | ||
915 | ||
916 | static snd_pcm_ops_t snd_usX2Y_pcm_ops = | |
917 | { | |
918 | .open = snd_usX2Y_pcm_open, | |
919 | .close = snd_usX2Y_pcm_close, | |
920 | .ioctl = snd_pcm_lib_ioctl, | |
921 | .hw_params = snd_usX2Y_pcm_hw_params, | |
922 | .hw_free = snd_usX2Y_pcm_hw_free, | |
923 | .prepare = snd_usX2Y_pcm_prepare, | |
924 | .trigger = snd_usX2Y_pcm_trigger, | |
925 | .pointer = snd_usX2Y_pcm_pointer, | |
926 | }; | |
927 | ||
928 | ||
929 | /* | |
930 | * free a usb stream instance | |
931 | */ | |
932 | static void usX2Y_audio_stream_free(snd_usX2Y_substream_t **usX2Y_substream) | |
933 | { | |
934 | if (NULL != usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]) { | |
935 | kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]); | |
936 | usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL; | |
937 | } | |
938 | kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]); | |
939 | usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL; | |
940 | } | |
941 | ||
942 | static void snd_usX2Y_pcm_private_free(snd_pcm_t *pcm) | |
943 | { | |
944 | snd_usX2Y_substream_t **usX2Y_stream = pcm->private_data; | |
945 | if (usX2Y_stream) { | |
946 | snd_pcm_lib_preallocate_free_for_all(pcm); | |
947 | usX2Y_audio_stream_free(usX2Y_stream); | |
948 | } | |
949 | } | |
950 | ||
951 | static int usX2Y_audio_stream_new(snd_card_t *card, int playback_endpoint, int capture_endpoint) | |
952 | { | |
953 | snd_pcm_t *pcm; | |
954 | int err, i; | |
955 | snd_usX2Y_substream_t **usX2Y_substream = | |
956 | usX2Y(card)->subs + 2 * usX2Y(card)->chip.pcm_devs; | |
957 | ||
958 | for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE; | |
959 | i <= SNDRV_PCM_STREAM_CAPTURE; ++i) { | |
960 | usX2Y_substream[i] = kcalloc(1, sizeof(snd_usX2Y_substream_t), GFP_KERNEL); | |
961 | if (NULL == usX2Y_substream[i]) { | |
962 | snd_printk(KERN_ERR "cannot malloc\n"); | |
963 | return -ENOMEM; | |
964 | } | |
965 | usX2Y_substream[i]->usX2Y = usX2Y(card); | |
966 | } | |
967 | ||
968 | if (playback_endpoint) | |
969 | usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]->endpoint = playback_endpoint; | |
970 | usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]->endpoint = capture_endpoint; | |
971 | ||
972 | err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usX2Y(card)->chip.pcm_devs, | |
973 | playback_endpoint ? 1 : 0, 1, | |
974 | &pcm); | |
975 | if (err < 0) { | |
976 | usX2Y_audio_stream_free(usX2Y_substream); | |
977 | return err; | |
978 | } | |
979 | ||
980 | if (playback_endpoint) | |
981 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usX2Y_pcm_ops); | |
982 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usX2Y_pcm_ops); | |
983 | ||
984 | pcm->private_data = usX2Y_substream; | |
985 | pcm->private_free = snd_usX2Y_pcm_private_free; | |
986 | pcm->info_flags = 0; | |
987 | ||
988 | sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->chip.pcm_devs); | |
989 | ||
990 | if ((playback_endpoint && | |
991 | 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream, | |
992 | SNDRV_DMA_TYPE_CONTINUOUS, | |
993 | snd_dma_continuous_data(GFP_KERNEL), | |
994 | 64*1024, 128*1024))) || | |
995 | 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, | |
996 | SNDRV_DMA_TYPE_CONTINUOUS, | |
997 | snd_dma_continuous_data(GFP_KERNEL), | |
998 | 64*1024, 128*1024))) { | |
999 | snd_usX2Y_pcm_private_free(pcm); | |
1000 | return err; | |
1001 | } | |
1002 | usX2Y(card)->chip.pcm_devs++; | |
1003 | ||
1004 | return 0; | |
1005 | } | |
1006 | ||
1007 | /* | |
1008 | * create a chip instance and set its names. | |
1009 | */ | |
1010 | int usX2Y_audio_create(snd_card_t* card) | |
1011 | { | |
1012 | int err = 0; | |
1013 | ||
1014 | INIT_LIST_HEAD(&usX2Y(card)->chip.pcm_list); | |
1015 | ||
1016 | if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8))) | |
1017 | return err; | |
1018 | if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) == USB_ID_US428) | |
1019 | if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA))) | |
1020 | return err; | |
1021 | if (le16_to_cpu(usX2Y(card)->chip.dev->descriptor.idProduct) != USB_ID_US122) | |
1022 | err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122. | |
1023 | return err; | |
1024 | } |