Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * US-X2Y AUDIO | |
3 | * Copyright (c) 2002-2004 by Karsten Wiese | |
4 | * | |
5 | * based on | |
6 | * | |
7 | * (Tentative) USB Audio Driver for ALSA | |
8 | * | |
9 | * Main and PCM part | |
10 | * | |
11 | * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> | |
12 | * | |
13 | * Many codes borrowed from audio.c by | |
14 | * Alan Cox (alan@lxorguk.ukuu.org.uk) | |
15 | * Thomas Sailer (sailer@ife.ee.ethz.ch) | |
16 | * | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or modify | |
19 | * it under the terms of the GNU General Public License as published by | |
20 | * the Free Software Foundation; either version 2 of the License, or | |
21 | * (at your option) any later version. | |
22 | * | |
23 | * This program is distributed in the hope that it will be useful, | |
24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | * GNU General Public License for more details. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public License | |
29 | * along with this program; if not, write to the Free Software | |
30 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
31 | */ | |
32 | ||
33 | ||
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 | 70 | static 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 | 126 | static 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 | 181 | static 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 | 196 | static 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 |
211 | static 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 | 260 | static 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 |
289 | static 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 |
297 | static 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 | 310 | static 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 | 349 | static 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 | 364 | static 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 | 370 | static 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 | 385 | static 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 | 396 | static 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 | 409 | static 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 | 423 | static 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 | 473 | static 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 | 482 | static 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 | 540 | static 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 | 548 | static 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 | */ | |
583 | static struct s_c2 | |
584 | { | |
585 | char c1, c2; | |
586 | } | |
587 | SetRate44100[] = | |
588 | { | |
589 | { 0x14, 0x08}, // this line sets 44100, well actually a little less | |
590 | { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... | |
591 | { 0x18, 0x42}, | |
592 | { 0x18, 0x45}, | |
593 | { 0x18, 0x46}, | |
594 | { 0x18, 0x48}, | |
595 | { 0x18, 0x4A}, | |
596 | { 0x18, 0x4C}, | |
597 | { 0x18, 0x4E}, | |
598 | { 0x18, 0x50}, | |
599 | { 0x18, 0x52}, | |
600 | { 0x18, 0x54}, | |
601 | { 0x18, 0x56}, | |
602 | { 0x18, 0x58}, | |
603 | { 0x18, 0x5A}, | |
604 | { 0x18, 0x5C}, | |
605 | { 0x18, 0x5E}, | |
606 | { 0x18, 0x60}, | |
607 | { 0x18, 0x62}, | |
608 | { 0x18, 0x64}, | |
609 | { 0x18, 0x66}, | |
610 | { 0x18, 0x68}, | |
611 | { 0x18, 0x6A}, | |
612 | { 0x18, 0x6C}, | |
613 | { 0x18, 0x6E}, | |
614 | { 0x18, 0x70}, | |
615 | { 0x18, 0x72}, | |
616 | { 0x18, 0x74}, | |
617 | { 0x18, 0x76}, | |
618 | { 0x18, 0x78}, | |
619 | { 0x18, 0x7A}, | |
620 | { 0x18, 0x7C}, | |
621 | { 0x18, 0x7E} | |
622 | }; | |
623 | static struct s_c2 SetRate48000[] = | |
624 | { | |
625 | { 0x14, 0x09}, // this line sets 48000, well actually a little less | |
626 | { 0x18, 0x40}, // only tascam / frontier design knows the further lines ....... | |
627 | { 0x18, 0x42}, | |
628 | { 0x18, 0x45}, | |
629 | { 0x18, 0x46}, | |
630 | { 0x18, 0x48}, | |
631 | { 0x18, 0x4A}, | |
632 | { 0x18, 0x4C}, | |
633 | { 0x18, 0x4E}, | |
634 | { 0x18, 0x50}, | |
635 | { 0x18, 0x52}, | |
636 | { 0x18, 0x54}, | |
637 | { 0x18, 0x56}, | |
638 | { 0x18, 0x58}, | |
639 | { 0x18, 0x5A}, | |
640 | { 0x18, 0x5C}, | |
641 | { 0x18, 0x5E}, | |
642 | { 0x18, 0x60}, | |
643 | { 0x18, 0x62}, | |
644 | { 0x18, 0x64}, | |
645 | { 0x18, 0x66}, | |
646 | { 0x18, 0x68}, | |
647 | { 0x18, 0x6A}, | |
648 | { 0x18, 0x6C}, | |
649 | { 0x18, 0x6E}, | |
650 | { 0x18, 0x70}, | |
651 | { 0x18, 0x73}, | |
652 | { 0x18, 0x74}, | |
653 | { 0x18, 0x76}, | |
654 | { 0x18, 0x78}, | |
655 | { 0x18, 0x7A}, | |
656 | { 0x18, 0x7C}, | |
657 | { 0x18, 0x7E} | |
658 | }; | |
659 | #define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000) | |
660 | ||
7d12e780 | 661 | static 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 | 671 | static 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 | 733 | static 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 |
763 | static 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 | 805 | static 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 | 838 | static 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 | 871 | static 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 | 893 | static 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 | 911 | static 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 | 922 | static 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 | 938 | static 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 | 947 | static 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 | 954 | static 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 | 1013 | int 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 | } |