Commit | Line | Data |
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e5779998 DM |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
15 | */ | |
16 | ||
17 | #include <linux/init.h> | |
9966ddaf | 18 | #include <linux/slab.h> |
44dcbbb1 | 19 | #include <linux/bitrev.h> |
edcd3633 | 20 | #include <linux/ratelimit.h> |
e5779998 DM |
21 | #include <linux/usb.h> |
22 | #include <linux/usb/audio.h> | |
7e847894 | 23 | #include <linux/usb/audio-v2.h> |
e5779998 DM |
24 | |
25 | #include <sound/core.h> | |
26 | #include <sound/pcm.h> | |
27 | #include <sound/pcm_params.h> | |
28 | ||
29 | #include "usbaudio.h" | |
30 | #include "card.h" | |
31 | #include "quirks.h" | |
32 | #include "debug.h" | |
c731bc96 | 33 | #include "endpoint.h" |
e5779998 DM |
34 | #include "helper.h" |
35 | #include "pcm.h" | |
79f920fb | 36 | #include "clock.h" |
88a8516a | 37 | #include "power.h" |
e5779998 | 38 | |
edcd3633 DM |
39 | #define SUBSTREAM_FLAG_DATA_EP_STARTED 0 |
40 | #define SUBSTREAM_FLAG_SYNC_EP_STARTED 1 | |
41 | ||
294c4fb8 PLB |
42 | /* return the estimated delay based on USB frame counters */ |
43 | snd_pcm_uframes_t snd_usb_pcm_delay(struct snd_usb_substream *subs, | |
44 | unsigned int rate) | |
45 | { | |
46 | int current_frame_number; | |
47 | int frame_diff; | |
48 | int est_delay; | |
49 | ||
48779a0b TI |
50 | if (!subs->last_delay) |
51 | return 0; /* short path */ | |
52 | ||
294c4fb8 PLB |
53 | current_frame_number = usb_get_current_frame_number(subs->dev); |
54 | /* | |
55 | * HCD implementations use different widths, use lower 8 bits. | |
56 | * The delay will be managed up to 256ms, which is more than | |
57 | * enough | |
58 | */ | |
59 | frame_diff = (current_frame_number - subs->last_frame_number) & 0xff; | |
60 | ||
61 | /* Approximation based on number of samples per USB frame (ms), | |
62 | some truncation for 44.1 but the estimate is good enough */ | |
e4cc6153 PLB |
63 | est_delay = frame_diff * rate / 1000; |
64 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) | |
65 | est_delay = subs->last_delay - est_delay; | |
66 | else | |
67 | est_delay = subs->last_delay + est_delay; | |
68 | ||
294c4fb8 PLB |
69 | if (est_delay < 0) |
70 | est_delay = 0; | |
71 | return est_delay; | |
72 | } | |
73 | ||
e5779998 DM |
74 | /* |
75 | * return the current pcm pointer. just based on the hwptr_done value. | |
76 | */ | |
77 | static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream) | |
78 | { | |
79 | struct snd_usb_substream *subs; | |
80 | unsigned int hwptr_done; | |
81 | ||
82 | subs = (struct snd_usb_substream *)substream->runtime->private_data; | |
978520b7 TI |
83 | if (subs->stream->chip->shutdown) |
84 | return SNDRV_PCM_POS_XRUN; | |
e5779998 DM |
85 | spin_lock(&subs->lock); |
86 | hwptr_done = subs->hwptr_done; | |
e4cc6153 | 87 | substream->runtime->delay = snd_usb_pcm_delay(subs, |
294c4fb8 | 88 | substream->runtime->rate); |
e5779998 DM |
89 | spin_unlock(&subs->lock); |
90 | return hwptr_done / (substream->runtime->frame_bits >> 3); | |
91 | } | |
92 | ||
93 | /* | |
94 | * find a matching audio format | |
95 | */ | |
61a70950 | 96 | static struct audioformat *find_format(struct snd_usb_substream *subs) |
e5779998 | 97 | { |
88766f04 | 98 | struct audioformat *fp; |
e5779998 DM |
99 | struct audioformat *found = NULL; |
100 | int cur_attr = 0, attr; | |
101 | ||
88766f04 | 102 | list_for_each_entry(fp, &subs->fmt_list, list) { |
74c34ca1 | 103 | if (!(fp->formats & pcm_format_to_bits(subs->pcm_format))) |
015eb0b0 | 104 | continue; |
61a70950 | 105 | if (fp->channels != subs->channels) |
e5779998 | 106 | continue; |
61a70950 DR |
107 | if (subs->cur_rate < fp->rate_min || |
108 | subs->cur_rate > fp->rate_max) | |
e5779998 DM |
109 | continue; |
110 | if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { | |
111 | unsigned int i; | |
112 | for (i = 0; i < fp->nr_rates; i++) | |
61a70950 | 113 | if (fp->rate_table[i] == subs->cur_rate) |
e5779998 DM |
114 | break; |
115 | if (i >= fp->nr_rates) | |
116 | continue; | |
117 | } | |
118 | attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
119 | if (! found) { | |
120 | found = fp; | |
121 | cur_attr = attr; | |
122 | continue; | |
123 | } | |
124 | /* avoid async out and adaptive in if the other method | |
125 | * supports the same format. | |
126 | * this is a workaround for the case like | |
127 | * M-audio audiophile USB. | |
128 | */ | |
129 | if (attr != cur_attr) { | |
130 | if ((attr == USB_ENDPOINT_SYNC_ASYNC && | |
131 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
132 | (attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
133 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) | |
134 | continue; | |
135 | if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC && | |
136 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
137 | (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
138 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { | |
139 | found = fp; | |
140 | cur_attr = attr; | |
141 | continue; | |
142 | } | |
143 | } | |
144 | /* find the format with the largest max. packet size */ | |
145 | if (fp->maxpacksize > found->maxpacksize) { | |
146 | found = fp; | |
147 | cur_attr = attr; | |
148 | } | |
149 | } | |
150 | return found; | |
151 | } | |
152 | ||
767d75ad DM |
153 | static int init_pitch_v1(struct snd_usb_audio *chip, int iface, |
154 | struct usb_host_interface *alts, | |
155 | struct audioformat *fmt) | |
156 | { | |
157 | struct usb_device *dev = chip->dev; | |
158 | unsigned int ep; | |
159 | unsigned char data[1]; | |
160 | int err; | |
161 | ||
162 | ep = get_endpoint(alts, 0)->bEndpointAddress; | |
163 | ||
767d75ad DM |
164 | data[0] = 1; |
165 | if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, | |
166 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, | |
167 | UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, | |
17d900c4 | 168 | data, sizeof(data))) < 0) { |
767d75ad DM |
169 | snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n", |
170 | dev->devnum, iface, ep); | |
171 | return err; | |
172 | } | |
173 | ||
174 | return 0; | |
175 | } | |
e5779998 | 176 | |
92c25611 DM |
177 | static int init_pitch_v2(struct snd_usb_audio *chip, int iface, |
178 | struct usb_host_interface *alts, | |
179 | struct audioformat *fmt) | |
180 | { | |
181 | struct usb_device *dev = chip->dev; | |
182 | unsigned char data[1]; | |
92c25611 DM |
183 | int err; |
184 | ||
92c25611 DM |
185 | data[0] = 1; |
186 | if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR, | |
187 | USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT, | |
188 | UAC2_EP_CS_PITCH << 8, 0, | |
17d900c4 | 189 | data, sizeof(data))) < 0) { |
92c25611 DM |
190 | snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH (v2)\n", |
191 | dev->devnum, iface, fmt->altsetting); | |
192 | return err; | |
193 | } | |
194 | ||
195 | return 0; | |
196 | } | |
197 | ||
e5779998 | 198 | /* |
92c25611 | 199 | * initialize the pitch control and sample rate |
e5779998 | 200 | */ |
767d75ad | 201 | int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface, |
e5779998 DM |
202 | struct usb_host_interface *alts, |
203 | struct audioformat *fmt) | |
204 | { | |
767d75ad DM |
205 | struct usb_interface_descriptor *altsd = get_iface_desc(alts); |
206 | ||
92c25611 DM |
207 | /* if endpoint doesn't have pitch control, bail out */ |
208 | if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) | |
209 | return 0; | |
210 | ||
767d75ad DM |
211 | switch (altsd->bInterfaceProtocol) { |
212 | case UAC_VERSION_1: | |
a2acad82 | 213 | default: |
767d75ad DM |
214 | return init_pitch_v1(chip, iface, alts, fmt); |
215 | ||
216 | case UAC_VERSION_2: | |
92c25611 | 217 | return init_pitch_v2(chip, iface, alts, fmt); |
767d75ad | 218 | } |
767d75ad DM |
219 | } |
220 | ||
a9bb3626 | 221 | static int start_endpoints(struct snd_usb_substream *subs, bool can_sleep) |
edcd3633 DM |
222 | { |
223 | int err; | |
224 | ||
225 | if (!subs->data_endpoint) | |
226 | return -EINVAL; | |
227 | ||
228 | if (!test_and_set_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) { | |
229 | struct snd_usb_endpoint *ep = subs->data_endpoint; | |
230 | ||
231 | snd_printdd(KERN_DEBUG "Starting data EP @%p\n", ep); | |
232 | ||
233 | ep->data_subs = subs; | |
015618b9 | 234 | err = snd_usb_endpoint_start(ep, can_sleep); |
edcd3633 DM |
235 | if (err < 0) { |
236 | clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags); | |
237 | return err; | |
238 | } | |
239 | } | |
240 | ||
241 | if (subs->sync_endpoint && | |
242 | !test_and_set_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) { | |
243 | struct snd_usb_endpoint *ep = subs->sync_endpoint; | |
244 | ||
2e4a263c DM |
245 | if (subs->data_endpoint->iface != subs->sync_endpoint->iface || |
246 | subs->data_endpoint->alt_idx != subs->sync_endpoint->alt_idx) { | |
247 | err = usb_set_interface(subs->dev, | |
248 | subs->sync_endpoint->iface, | |
249 | subs->sync_endpoint->alt_idx); | |
250 | if (err < 0) { | |
251 | snd_printk(KERN_ERR | |
252 | "%d:%d:%d: cannot set interface (%d)\n", | |
253 | subs->dev->devnum, | |
254 | subs->sync_endpoint->iface, | |
255 | subs->sync_endpoint->alt_idx, err); | |
256 | return -EIO; | |
257 | } | |
258 | } | |
259 | ||
edcd3633 DM |
260 | snd_printdd(KERN_DEBUG "Starting sync EP @%p\n", ep); |
261 | ||
262 | ep->sync_slave = subs->data_endpoint; | |
015618b9 | 263 | err = snd_usb_endpoint_start(ep, can_sleep); |
edcd3633 DM |
264 | if (err < 0) { |
265 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); | |
266 | return err; | |
267 | } | |
268 | } | |
269 | ||
270 | return 0; | |
271 | } | |
272 | ||
a9bb3626 | 273 | static void stop_endpoints(struct snd_usb_substream *subs, bool wait) |
edcd3633 DM |
274 | { |
275 | if (test_and_clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) | |
b2eb950d | 276 | snd_usb_endpoint_stop(subs->sync_endpoint); |
edcd3633 DM |
277 | |
278 | if (test_and_clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) | |
b2eb950d TI |
279 | snd_usb_endpoint_stop(subs->data_endpoint); |
280 | ||
281 | if (wait) { | |
282 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); | |
283 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
284 | } | |
edcd3633 DM |
285 | } |
286 | ||
edcd3633 DM |
287 | static int deactivate_endpoints(struct snd_usb_substream *subs) |
288 | { | |
289 | int reta, retb; | |
290 | ||
291 | reta = snd_usb_endpoint_deactivate(subs->sync_endpoint); | |
292 | retb = snd_usb_endpoint_deactivate(subs->data_endpoint); | |
293 | ||
294 | if (reta < 0) | |
295 | return reta; | |
296 | ||
297 | if (retb < 0) | |
298 | return retb; | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
e5779998 DM |
303 | /* |
304 | * find a matching format and set up the interface | |
305 | */ | |
306 | static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) | |
307 | { | |
308 | struct usb_device *dev = subs->dev; | |
309 | struct usb_host_interface *alts; | |
310 | struct usb_interface_descriptor *altsd; | |
311 | struct usb_interface *iface; | |
312 | unsigned int ep, attr; | |
313 | int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; | |
c75a8a7a | 314 | int err, implicit_fb = 0; |
e5779998 DM |
315 | |
316 | iface = usb_ifnum_to_if(dev, fmt->iface); | |
317 | if (WARN_ON(!iface)) | |
318 | return -EINVAL; | |
319 | alts = &iface->altsetting[fmt->altset_idx]; | |
320 | altsd = get_iface_desc(alts); | |
321 | if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting)) | |
322 | return -EINVAL; | |
323 | ||
324 | if (fmt == subs->cur_audiofmt) | |
325 | return 0; | |
326 | ||
68e67f40 DM |
327 | /* close the old interface */ |
328 | if (subs->interface >= 0 && subs->interface != fmt->iface) { | |
329 | err = usb_set_interface(subs->dev, subs->interface, 0); | |
330 | if (err < 0) { | |
331 | snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed (%d)\n", | |
332 | dev->devnum, fmt->iface, fmt->altsetting, err); | |
333 | return -EIO; | |
334 | } | |
335 | subs->interface = -1; | |
336 | subs->altset_idx = 0; | |
337 | } | |
338 | ||
339 | /* set interface */ | |
340 | if (subs->interface != fmt->iface || | |
341 | subs->altset_idx != fmt->altset_idx) { | |
342 | err = usb_set_interface(dev, fmt->iface, fmt->altsetting); | |
343 | if (err < 0) { | |
344 | snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed (%d)\n", | |
345 | dev->devnum, fmt->iface, fmt->altsetting, err); | |
346 | return -EIO; | |
347 | } | |
348 | snd_printdd(KERN_INFO "setting usb interface %d:%d\n", | |
349 | fmt->iface, fmt->altsetting); | |
350 | subs->interface = fmt->iface; | |
351 | subs->altset_idx = fmt->altset_idx; | |
0959f22e | 352 | |
21bb5aaf | 353 | snd_usb_set_interface_quirk(dev); |
68e67f40 DM |
354 | } |
355 | ||
edcd3633 DM |
356 | subs->data_endpoint = snd_usb_add_endpoint(subs->stream->chip, |
357 | alts, fmt->endpoint, subs->direction, | |
358 | SND_USB_ENDPOINT_TYPE_DATA); | |
359 | if (!subs->data_endpoint) | |
360 | return -EINVAL; | |
e5779998 DM |
361 | |
362 | /* we need a sync pipe in async OUT or adaptive IN mode */ | |
363 | /* check the number of EP, since some devices have broken | |
364 | * descriptors which fool us. if it has only one EP, | |
365 | * assume it as adaptive-out or sync-in. | |
366 | */ | |
367 | attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
c75a8a7a DM |
368 | |
369 | switch (subs->stream->chip->usb_id) { | |
ca10a7eb | 370 | case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ |
e9a25e04 | 371 | case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ |
ca10a7eb EZ |
372 | if (is_playback) { |
373 | implicit_fb = 1; | |
374 | ep = 0x81; | |
375 | iface = usb_ifnum_to_if(dev, 3); | |
376 | ||
377 | if (!iface || iface->num_altsetting == 0) | |
378 | return -EINVAL; | |
379 | ||
380 | alts = &iface->altsetting[1]; | |
381 | goto add_sync_ep; | |
382 | } | |
383 | break; | |
c75a8a7a DM |
384 | case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */ |
385 | case USB_ID(0x0763, 0x2081): | |
386 | if (is_playback) { | |
387 | implicit_fb = 1; | |
edcd3633 DM |
388 | ep = 0x81; |
389 | iface = usb_ifnum_to_if(dev, 2); | |
c75a8a7a DM |
390 | |
391 | if (!iface || iface->num_altsetting == 0) | |
392 | return -EINVAL; | |
393 | ||
edcd3633 DM |
394 | alts = &iface->altsetting[1]; |
395 | goto add_sync_ep; | |
396 | } | |
c75a8a7a | 397 | } |
edcd3633 | 398 | |
c75a8a7a DM |
399 | if (((is_playback && attr == USB_ENDPOINT_SYNC_ASYNC) || |
400 | (!is_playback && attr == USB_ENDPOINT_SYNC_ADAPTIVE)) && | |
401 | altsd->bNumEndpoints >= 2) { | |
e5779998 DM |
402 | /* check sync-pipe endpoint */ |
403 | /* ... and check descriptor size before accessing bSynchAddress | |
404 | because there is a version of the SB Audigy 2 NX firmware lacking | |
405 | the audio fields in the endpoint descriptors */ | |
fde854bd | 406 | if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC || |
e5779998 | 407 | (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
c75a8a7a DM |
408 | get_endpoint(alts, 1)->bSynchAddress != 0 && |
409 | !implicit_fb)) { | |
7fb75db1 DM |
410 | snd_printk(KERN_ERR "%d:%d:%d : invalid sync pipe. bmAttributes %02x, bLength %d, bSynchAddress %02x\n", |
411 | dev->devnum, fmt->iface, fmt->altsetting, | |
412 | get_endpoint(alts, 1)->bmAttributes, | |
413 | get_endpoint(alts, 1)->bLength, | |
414 | get_endpoint(alts, 1)->bSynchAddress); | |
e5779998 DM |
415 | return -EINVAL; |
416 | } | |
417 | ep = get_endpoint(alts, 1)->bEndpointAddress; | |
7fb75db1 DM |
418 | if (!implicit_fb && |
419 | get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && | |
e5779998 | 420 | (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || |
7fb75db1 DM |
421 | (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { |
422 | snd_printk(KERN_ERR "%d:%d:%d : invalid sync pipe. is_playback %d, ep %02x, bSynchAddress %02x\n", | |
423 | dev->devnum, fmt->iface, fmt->altsetting, | |
424 | is_playback, ep, get_endpoint(alts, 0)->bSynchAddress); | |
e5779998 DM |
425 | return -EINVAL; |
426 | } | |
c75a8a7a DM |
427 | |
428 | implicit_fb = (get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_USAGE_MASK) | |
429 | == USB_ENDPOINT_USAGE_IMPLICIT_FB; | |
430 | ||
edcd3633 DM |
431 | add_sync_ep: |
432 | subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, | |
433 | alts, ep, !subs->direction, | |
c75a8a7a DM |
434 | implicit_fb ? |
435 | SND_USB_ENDPOINT_TYPE_DATA : | |
436 | SND_USB_ENDPOINT_TYPE_SYNC); | |
edcd3633 DM |
437 | if (!subs->sync_endpoint) |
438 | return -EINVAL; | |
439 | ||
440 | subs->data_endpoint->sync_master = subs->sync_endpoint; | |
441 | } | |
e5779998 | 442 | |
9e9b5946 | 443 | if ((err = snd_usb_init_pitch(subs->stream->chip, fmt->iface, alts, fmt)) < 0) |
e5779998 DM |
444 | return err; |
445 | ||
446 | subs->cur_audiofmt = fmt; | |
447 | ||
448 | snd_usb_set_format_quirk(subs, fmt); | |
449 | ||
450 | #if 0 | |
451 | printk(KERN_DEBUG | |
452 | "setting done: format = %d, rate = %d..%d, channels = %d\n", | |
453 | fmt->format, fmt->rate_min, fmt->rate_max, fmt->channels); | |
454 | printk(KERN_DEBUG | |
455 | " datapipe = 0x%0x, syncpipe = 0x%0x\n", | |
456 | subs->datapipe, subs->syncpipe); | |
457 | #endif | |
458 | ||
459 | return 0; | |
460 | } | |
461 | ||
0d9741c0 EZ |
462 | /* |
463 | * Return the score of matching two audioformats. | |
464 | * Veto the audioformat if: | |
465 | * - It has no channels for some reason. | |
466 | * - Requested PCM format is not supported. | |
467 | * - Requested sample rate is not supported. | |
468 | */ | |
469 | static int match_endpoint_audioformats(struct audioformat *fp, | |
470 | struct audioformat *match, int rate, | |
471 | snd_pcm_format_t pcm_format) | |
472 | { | |
473 | int i; | |
474 | int score = 0; | |
475 | ||
476 | if (fp->channels < 1) { | |
477 | snd_printdd("%s: (fmt @%p) no channels\n", __func__, fp); | |
478 | return 0; | |
479 | } | |
480 | ||
74c34ca1 | 481 | if (!(fp->formats & pcm_format_to_bits(pcm_format))) { |
0d9741c0 EZ |
482 | snd_printdd("%s: (fmt @%p) no match for format %d\n", __func__, |
483 | fp, pcm_format); | |
484 | return 0; | |
485 | } | |
486 | ||
487 | for (i = 0; i < fp->nr_rates; i++) { | |
488 | if (fp->rate_table[i] == rate) { | |
489 | score++; | |
490 | break; | |
491 | } | |
492 | } | |
493 | if (!score) { | |
494 | snd_printdd("%s: (fmt @%p) no match for rate %d\n", __func__, | |
495 | fp, rate); | |
496 | return 0; | |
497 | } | |
498 | ||
499 | if (fp->channels == match->channels) | |
500 | score++; | |
501 | ||
502 | snd_printdd("%s: (fmt @%p) score %d\n", __func__, fp, score); | |
503 | ||
504 | return score; | |
505 | } | |
506 | ||
507 | /* | |
508 | * Configure the sync ep using the rate and pcm format of the data ep. | |
509 | */ | |
510 | static int configure_sync_endpoint(struct snd_usb_substream *subs) | |
511 | { | |
512 | int ret; | |
513 | struct audioformat *fp; | |
514 | struct audioformat *sync_fp = NULL; | |
515 | int cur_score = 0; | |
516 | int sync_period_bytes = subs->period_bytes; | |
517 | struct snd_usb_substream *sync_subs = | |
518 | &subs->stream->substream[subs->direction ^ 1]; | |
519 | ||
31be5425 TI |
520 | if (subs->sync_endpoint->type != SND_USB_ENDPOINT_TYPE_DATA || |
521 | !subs->stream) | |
522 | return snd_usb_endpoint_set_params(subs->sync_endpoint, | |
523 | subs->pcm_format, | |
524 | subs->channels, | |
525 | subs->period_bytes, | |
526 | subs->cur_rate, | |
527 | subs->cur_audiofmt, | |
528 | NULL); | |
529 | ||
0d9741c0 EZ |
530 | /* Try to find the best matching audioformat. */ |
531 | list_for_each_entry(fp, &sync_subs->fmt_list, list) { | |
532 | int score = match_endpoint_audioformats(fp, subs->cur_audiofmt, | |
533 | subs->cur_rate, subs->pcm_format); | |
534 | ||
535 | if (score > cur_score) { | |
536 | sync_fp = fp; | |
537 | cur_score = score; | |
538 | } | |
539 | } | |
540 | ||
541 | if (unlikely(sync_fp == NULL)) { | |
542 | snd_printk(KERN_ERR "%s: no valid audioformat for sync ep %x found\n", | |
543 | __func__, sync_subs->ep_num); | |
544 | return -EINVAL; | |
545 | } | |
546 | ||
547 | /* | |
548 | * Recalculate the period bytes if channel number differ between | |
549 | * data and sync ep audioformat. | |
550 | */ | |
551 | if (sync_fp->channels != subs->channels) { | |
552 | sync_period_bytes = (subs->period_bytes / subs->channels) * | |
553 | sync_fp->channels; | |
554 | snd_printdd("%s: adjusted sync ep period bytes (%d -> %d)\n", | |
555 | __func__, subs->period_bytes, sync_period_bytes); | |
556 | } | |
557 | ||
558 | ret = snd_usb_endpoint_set_params(subs->sync_endpoint, | |
559 | subs->pcm_format, | |
560 | sync_fp->channels, | |
561 | sync_period_bytes, | |
562 | subs->cur_rate, | |
563 | sync_fp, | |
564 | NULL); | |
565 | ||
566 | return ret; | |
567 | } | |
568 | ||
61a70950 DR |
569 | /* |
570 | * configure endpoint params | |
571 | * | |
572 | * called during initial setup and upon resume | |
573 | */ | |
574 | static int configure_endpoint(struct snd_usb_substream *subs) | |
575 | { | |
576 | int ret; | |
577 | ||
61a70950 | 578 | /* format changed */ |
b0db6063 | 579 | stop_endpoints(subs, true); |
61a70950 DR |
580 | ret = snd_usb_endpoint_set_params(subs->data_endpoint, |
581 | subs->pcm_format, | |
582 | subs->channels, | |
583 | subs->period_bytes, | |
584 | subs->cur_rate, | |
585 | subs->cur_audiofmt, | |
586 | subs->sync_endpoint); | |
587 | if (ret < 0) | |
978520b7 | 588 | return ret; |
61a70950 DR |
589 | |
590 | if (subs->sync_endpoint) | |
0d9741c0 EZ |
591 | ret = configure_sync_endpoint(subs); |
592 | ||
61a70950 DR |
593 | return ret; |
594 | } | |
595 | ||
e5779998 DM |
596 | /* |
597 | * hw_params callback | |
598 | * | |
599 | * allocate a buffer and set the given audio format. | |
600 | * | |
601 | * so far we use a physically linear buffer although packetize transfer | |
602 | * doesn't need a continuous area. | |
603 | * if sg buffer is supported on the later version of alsa, we'll follow | |
604 | * that. | |
605 | */ | |
606 | static int snd_usb_hw_params(struct snd_pcm_substream *substream, | |
607 | struct snd_pcm_hw_params *hw_params) | |
608 | { | |
609 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
610 | struct audioformat *fmt; | |
61a70950 | 611 | int ret; |
e5779998 DM |
612 | |
613 | ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, | |
614 | params_buffer_bytes(hw_params)); | |
615 | if (ret < 0) | |
616 | return ret; | |
617 | ||
61a70950 DR |
618 | subs->pcm_format = params_format(hw_params); |
619 | subs->period_bytes = params_period_bytes(hw_params); | |
620 | subs->channels = params_channels(hw_params); | |
621 | subs->cur_rate = params_rate(hw_params); | |
622 | ||
623 | fmt = find_format(subs); | |
e5779998 DM |
624 | if (!fmt) { |
625 | snd_printd(KERN_DEBUG "cannot set format: format = %#x, rate = %d, channels = %d\n", | |
61a70950 | 626 | subs->pcm_format, subs->cur_rate, subs->channels); |
e5779998 DM |
627 | return -EINVAL; |
628 | } | |
629 | ||
34f3c89f | 630 | down_read(&subs->stream->chip->shutdown_rwsem); |
978520b7 TI |
631 | if (subs->stream->chip->shutdown) |
632 | ret = -ENODEV; | |
633 | else | |
634 | ret = set_format(subs, fmt); | |
34f3c89f | 635 | up_read(&subs->stream->chip->shutdown_rwsem); |
978520b7 | 636 | if (ret < 0) |
e5779998 DM |
637 | return ret; |
638 | ||
61a70950 DR |
639 | subs->interface = fmt->iface; |
640 | subs->altset_idx = fmt->altset_idx; | |
384dc085 | 641 | subs->need_setup_ep = true; |
715a1705 | 642 | |
61a70950 | 643 | return 0; |
e5779998 DM |
644 | } |
645 | ||
646 | /* | |
647 | * hw_free callback | |
648 | * | |
649 | * reset the audio format and release the buffer | |
650 | */ | |
651 | static int snd_usb_hw_free(struct snd_pcm_substream *substream) | |
652 | { | |
653 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
654 | ||
655 | subs->cur_audiofmt = NULL; | |
656 | subs->cur_rate = 0; | |
657 | subs->period_bytes = 0; | |
34f3c89f | 658 | down_read(&subs->stream->chip->shutdown_rwsem); |
978520b7 | 659 | if (!subs->stream->chip->shutdown) { |
a9bb3626 | 660 | stop_endpoints(subs, true); |
978520b7 TI |
661 | deactivate_endpoints(subs); |
662 | } | |
34f3c89f | 663 | up_read(&subs->stream->chip->shutdown_rwsem); |
e5779998 DM |
664 | return snd_pcm_lib_free_vmalloc_buffer(substream); |
665 | } | |
666 | ||
667 | /* | |
668 | * prepare callback | |
669 | * | |
670 | * only a few subtle things... | |
671 | */ | |
672 | static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) | |
673 | { | |
674 | struct snd_pcm_runtime *runtime = substream->runtime; | |
675 | struct snd_usb_substream *subs = runtime->private_data; | |
61a70950 DR |
676 | struct usb_host_interface *alts; |
677 | struct usb_interface *iface; | |
678 | int ret; | |
e5779998 DM |
679 | |
680 | if (! subs->cur_audiofmt) { | |
681 | snd_printk(KERN_ERR "usbaudio: no format is specified!\n"); | |
682 | return -ENXIO; | |
683 | } | |
684 | ||
34f3c89f | 685 | down_read(&subs->stream->chip->shutdown_rwsem); |
978520b7 TI |
686 | if (subs->stream->chip->shutdown) { |
687 | ret = -ENODEV; | |
688 | goto unlock; | |
689 | } | |
690 | if (snd_BUG_ON(!subs->data_endpoint)) { | |
691 | ret = -EIO; | |
692 | goto unlock; | |
693 | } | |
edcd3633 | 694 | |
f58161ba TI |
695 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); |
696 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
697 | ||
61a70950 DR |
698 | ret = set_format(subs, subs->cur_audiofmt); |
699 | if (ret < 0) | |
978520b7 | 700 | goto unlock; |
61a70950 DR |
701 | |
702 | iface = usb_ifnum_to_if(subs->dev, subs->cur_audiofmt->iface); | |
703 | alts = &iface->altsetting[subs->cur_audiofmt->altset_idx]; | |
704 | ret = snd_usb_init_sample_rate(subs->stream->chip, | |
705 | subs->cur_audiofmt->iface, | |
706 | alts, | |
707 | subs->cur_audiofmt, | |
708 | subs->cur_rate); | |
709 | if (ret < 0) | |
978520b7 | 710 | goto unlock; |
61a70950 | 711 | |
384dc085 TI |
712 | if (subs->need_setup_ep) { |
713 | ret = configure_endpoint(subs); | |
714 | if (ret < 0) | |
978520b7 | 715 | goto unlock; |
384dc085 TI |
716 | subs->need_setup_ep = false; |
717 | } | |
61a70950 | 718 | |
e5779998 | 719 | /* some unit conversions in runtime */ |
edcd3633 DM |
720 | subs->data_endpoint->maxframesize = |
721 | bytes_to_frames(runtime, subs->data_endpoint->maxpacksize); | |
722 | subs->data_endpoint->curframesize = | |
723 | bytes_to_frames(runtime, subs->data_endpoint->curpacksize); | |
e5779998 DM |
724 | |
725 | /* reset the pointer */ | |
726 | subs->hwptr_done = 0; | |
727 | subs->transfer_done = 0; | |
294c4fb8 PLB |
728 | subs->last_delay = 0; |
729 | subs->last_frame_number = 0; | |
e5779998 DM |
730 | runtime->delay = 0; |
731 | ||
edcd3633 DM |
732 | /* for playback, submit the URBs now; otherwise, the first hwptr_done |
733 | * updates for all URBs would happen at the same time when starting */ | |
734 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) | |
a9bb3626 | 735 | ret = start_endpoints(subs, true); |
edcd3633 | 736 | |
978520b7 | 737 | unlock: |
34f3c89f | 738 | up_read(&subs->stream->chip->shutdown_rwsem); |
978520b7 | 739 | return ret; |
e5779998 DM |
740 | } |
741 | ||
742 | static struct snd_pcm_hardware snd_usb_hardware = | |
743 | { | |
744 | .info = SNDRV_PCM_INFO_MMAP | | |
745 | SNDRV_PCM_INFO_MMAP_VALID | | |
746 | SNDRV_PCM_INFO_BATCH | | |
747 | SNDRV_PCM_INFO_INTERLEAVED | | |
748 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
749 | SNDRV_PCM_INFO_PAUSE, | |
750 | .buffer_bytes_max = 1024 * 1024, | |
751 | .period_bytes_min = 64, | |
752 | .period_bytes_max = 512 * 1024, | |
753 | .periods_min = 2, | |
754 | .periods_max = 1024, | |
755 | }; | |
756 | ||
757 | static int hw_check_valid_format(struct snd_usb_substream *subs, | |
758 | struct snd_pcm_hw_params *params, | |
759 | struct audioformat *fp) | |
760 | { | |
761 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
762 | struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
763 | struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
764 | struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
015eb0b0 | 765 | struct snd_mask check_fmts; |
e5779998 DM |
766 | unsigned int ptime; |
767 | ||
768 | /* check the format */ | |
015eb0b0 CL |
769 | snd_mask_none(&check_fmts); |
770 | check_fmts.bits[0] = (u32)fp->formats; | |
771 | check_fmts.bits[1] = (u32)(fp->formats >> 32); | |
772 | snd_mask_intersect(&check_fmts, fmts); | |
773 | if (snd_mask_empty(&check_fmts)) { | |
e5779998 DM |
774 | hwc_debug(" > check: no supported format %d\n", fp->format); |
775 | return 0; | |
776 | } | |
777 | /* check the channels */ | |
778 | if (fp->channels < ct->min || fp->channels > ct->max) { | |
779 | hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); | |
780 | return 0; | |
781 | } | |
782 | /* check the rate is within the range */ | |
783 | if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { | |
784 | hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); | |
785 | return 0; | |
786 | } | |
787 | if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { | |
788 | hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); | |
789 | return 0; | |
790 | } | |
791 | /* check whether the period time is >= the data packet interval */ | |
978520b7 | 792 | if (subs->speed != USB_SPEED_FULL) { |
e5779998 DM |
793 | ptime = 125 * (1 << fp->datainterval); |
794 | if (ptime > pt->max || (ptime == pt->max && pt->openmax)) { | |
795 | hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max); | |
796 | return 0; | |
797 | } | |
798 | } | |
799 | return 1; | |
800 | } | |
801 | ||
802 | static int hw_rule_rate(struct snd_pcm_hw_params *params, | |
803 | struct snd_pcm_hw_rule *rule) | |
804 | { | |
805 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 806 | struct audioformat *fp; |
e5779998 DM |
807 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
808 | unsigned int rmin, rmax; | |
809 | int changed; | |
810 | ||
811 | hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); | |
812 | changed = 0; | |
813 | rmin = rmax = 0; | |
88766f04 | 814 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
815 | if (!hw_check_valid_format(subs, params, fp)) |
816 | continue; | |
817 | if (changed++) { | |
818 | if (rmin > fp->rate_min) | |
819 | rmin = fp->rate_min; | |
820 | if (rmax < fp->rate_max) | |
821 | rmax = fp->rate_max; | |
822 | } else { | |
823 | rmin = fp->rate_min; | |
824 | rmax = fp->rate_max; | |
825 | } | |
826 | } | |
827 | ||
828 | if (!changed) { | |
829 | hwc_debug(" --> get empty\n"); | |
830 | it->empty = 1; | |
831 | return -EINVAL; | |
832 | } | |
833 | ||
834 | changed = 0; | |
835 | if (it->min < rmin) { | |
836 | it->min = rmin; | |
837 | it->openmin = 0; | |
838 | changed = 1; | |
839 | } | |
840 | if (it->max > rmax) { | |
841 | it->max = rmax; | |
842 | it->openmax = 0; | |
843 | changed = 1; | |
844 | } | |
845 | if (snd_interval_checkempty(it)) { | |
846 | it->empty = 1; | |
847 | return -EINVAL; | |
848 | } | |
849 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
850 | return changed; | |
851 | } | |
852 | ||
853 | ||
854 | static int hw_rule_channels(struct snd_pcm_hw_params *params, | |
855 | struct snd_pcm_hw_rule *rule) | |
856 | { | |
857 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 858 | struct audioformat *fp; |
e5779998 DM |
859 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
860 | unsigned int rmin, rmax; | |
861 | int changed; | |
862 | ||
863 | hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); | |
864 | changed = 0; | |
865 | rmin = rmax = 0; | |
88766f04 | 866 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
867 | if (!hw_check_valid_format(subs, params, fp)) |
868 | continue; | |
869 | if (changed++) { | |
870 | if (rmin > fp->channels) | |
871 | rmin = fp->channels; | |
872 | if (rmax < fp->channels) | |
873 | rmax = fp->channels; | |
874 | } else { | |
875 | rmin = fp->channels; | |
876 | rmax = fp->channels; | |
877 | } | |
878 | } | |
879 | ||
880 | if (!changed) { | |
881 | hwc_debug(" --> get empty\n"); | |
882 | it->empty = 1; | |
883 | return -EINVAL; | |
884 | } | |
885 | ||
886 | changed = 0; | |
887 | if (it->min < rmin) { | |
888 | it->min = rmin; | |
889 | it->openmin = 0; | |
890 | changed = 1; | |
891 | } | |
892 | if (it->max > rmax) { | |
893 | it->max = rmax; | |
894 | it->openmax = 0; | |
895 | changed = 1; | |
896 | } | |
897 | if (snd_interval_checkempty(it)) { | |
898 | it->empty = 1; | |
899 | return -EINVAL; | |
900 | } | |
901 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
902 | return changed; | |
903 | } | |
904 | ||
905 | static int hw_rule_format(struct snd_pcm_hw_params *params, | |
906 | struct snd_pcm_hw_rule *rule) | |
907 | { | |
908 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 909 | struct audioformat *fp; |
e5779998 DM |
910 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
911 | u64 fbits; | |
912 | u32 oldbits[2]; | |
913 | int changed; | |
914 | ||
915 | hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); | |
916 | fbits = 0; | |
88766f04 | 917 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
918 | if (!hw_check_valid_format(subs, params, fp)) |
919 | continue; | |
015eb0b0 | 920 | fbits |= fp->formats; |
e5779998 DM |
921 | } |
922 | ||
923 | oldbits[0] = fmt->bits[0]; | |
924 | oldbits[1] = fmt->bits[1]; | |
925 | fmt->bits[0] &= (u32)fbits; | |
926 | fmt->bits[1] &= (u32)(fbits >> 32); | |
927 | if (!fmt->bits[0] && !fmt->bits[1]) { | |
928 | hwc_debug(" --> get empty\n"); | |
929 | return -EINVAL; | |
930 | } | |
931 | changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); | |
932 | hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); | |
933 | return changed; | |
934 | } | |
935 | ||
936 | static int hw_rule_period_time(struct snd_pcm_hw_params *params, | |
937 | struct snd_pcm_hw_rule *rule) | |
938 | { | |
939 | struct snd_usb_substream *subs = rule->private; | |
940 | struct audioformat *fp; | |
941 | struct snd_interval *it; | |
942 | unsigned char min_datainterval; | |
943 | unsigned int pmin; | |
944 | int changed; | |
945 | ||
946 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
947 | hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); | |
948 | min_datainterval = 0xff; | |
949 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
950 | if (!hw_check_valid_format(subs, params, fp)) | |
951 | continue; | |
952 | min_datainterval = min(min_datainterval, fp->datainterval); | |
953 | } | |
954 | if (min_datainterval == 0xff) { | |
a7ce2e0d | 955 | hwc_debug(" --> get empty\n"); |
e5779998 DM |
956 | it->empty = 1; |
957 | return -EINVAL; | |
958 | } | |
959 | pmin = 125 * (1 << min_datainterval); | |
960 | changed = 0; | |
961 | if (it->min < pmin) { | |
962 | it->min = pmin; | |
963 | it->openmin = 0; | |
964 | changed = 1; | |
965 | } | |
966 | if (snd_interval_checkempty(it)) { | |
967 | it->empty = 1; | |
968 | return -EINVAL; | |
969 | } | |
970 | hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed); | |
971 | return changed; | |
972 | } | |
973 | ||
974 | /* | |
975 | * If the device supports unusual bit rates, does the request meet these? | |
976 | */ | |
977 | static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, | |
978 | struct snd_usb_substream *subs) | |
979 | { | |
980 | struct audioformat *fp; | |
0717d0f5 | 981 | int *rate_list; |
e5779998 DM |
982 | int count = 0, needs_knot = 0; |
983 | int err; | |
984 | ||
5cd5d7c4 CL |
985 | kfree(subs->rate_list.list); |
986 | subs->rate_list.list = NULL; | |
987 | ||
e5779998 DM |
988 | list_for_each_entry(fp, &subs->fmt_list, list) { |
989 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) | |
990 | return 0; | |
991 | count += fp->nr_rates; | |
992 | if (fp->rates & SNDRV_PCM_RATE_KNOT) | |
993 | needs_knot = 1; | |
994 | } | |
995 | if (!needs_knot) | |
996 | return 0; | |
997 | ||
0717d0f5 TI |
998 | subs->rate_list.list = rate_list = |
999 | kmalloc(sizeof(int) * count, GFP_KERNEL); | |
8a8d56b2 JJ |
1000 | if (!subs->rate_list.list) |
1001 | return -ENOMEM; | |
1002 | subs->rate_list.count = count; | |
e5779998 DM |
1003 | subs->rate_list.mask = 0; |
1004 | count = 0; | |
1005 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
1006 | int i; | |
1007 | for (i = 0; i < fp->nr_rates; i++) | |
0717d0f5 | 1008 | rate_list[count++] = fp->rate_table[i]; |
e5779998 DM |
1009 | } |
1010 | err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1011 | &subs->rate_list); | |
1012 | if (err < 0) | |
1013 | return err; | |
1014 | ||
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | ||
1019 | /* | |
1020 | * set up the runtime hardware information. | |
1021 | */ | |
1022 | ||
1023 | static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) | |
1024 | { | |
88766f04 | 1025 | struct audioformat *fp; |
e5779998 DM |
1026 | unsigned int pt, ptmin; |
1027 | int param_period_time_if_needed; | |
1028 | int err; | |
1029 | ||
1030 | runtime->hw.formats = subs->formats; | |
1031 | ||
1032 | runtime->hw.rate_min = 0x7fffffff; | |
1033 | runtime->hw.rate_max = 0; | |
1034 | runtime->hw.channels_min = 256; | |
1035 | runtime->hw.channels_max = 0; | |
1036 | runtime->hw.rates = 0; | |
1037 | ptmin = UINT_MAX; | |
1038 | /* check min/max rates and channels */ | |
88766f04 | 1039 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1040 | runtime->hw.rates |= fp->rates; |
1041 | if (runtime->hw.rate_min > fp->rate_min) | |
1042 | runtime->hw.rate_min = fp->rate_min; | |
1043 | if (runtime->hw.rate_max < fp->rate_max) | |
1044 | runtime->hw.rate_max = fp->rate_max; | |
1045 | if (runtime->hw.channels_min > fp->channels) | |
1046 | runtime->hw.channels_min = fp->channels; | |
1047 | if (runtime->hw.channels_max < fp->channels) | |
1048 | runtime->hw.channels_max = fp->channels; | |
1049 | if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) { | |
1050 | /* FIXME: there might be more than one audio formats... */ | |
1051 | runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = | |
1052 | fp->frame_size; | |
1053 | } | |
1054 | pt = 125 * (1 << fp->datainterval); | |
1055 | ptmin = min(ptmin, pt); | |
1056 | } | |
88a8516a ON |
1057 | err = snd_usb_autoresume(subs->stream->chip); |
1058 | if (err < 0) | |
1059 | return err; | |
e5779998 DM |
1060 | |
1061 | param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME; | |
978520b7 | 1062 | if (subs->speed == USB_SPEED_FULL) |
e5779998 DM |
1063 | /* full speed devices have fixed data packet interval */ |
1064 | ptmin = 1000; | |
1065 | if (ptmin == 1000) | |
1066 | /* if period time doesn't go below 1 ms, no rules needed */ | |
1067 | param_period_time_if_needed = -1; | |
1068 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1069 | ptmin, UINT_MAX); | |
1070 | ||
1071 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1072 | hw_rule_rate, subs, | |
1073 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1074 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1075 | param_period_time_if_needed, | |
1076 | -1)) < 0) | |
88a8516a | 1077 | goto rep_err; |
e5779998 DM |
1078 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, |
1079 | hw_rule_channels, subs, | |
1080 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1081 | SNDRV_PCM_HW_PARAM_RATE, | |
1082 | param_period_time_if_needed, | |
1083 | -1)) < 0) | |
88a8516a | 1084 | goto rep_err; |
e5779998 DM |
1085 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, |
1086 | hw_rule_format, subs, | |
1087 | SNDRV_PCM_HW_PARAM_RATE, | |
1088 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1089 | param_period_time_if_needed, | |
1090 | -1)) < 0) | |
88a8516a | 1091 | goto rep_err; |
e5779998 DM |
1092 | if (param_period_time_if_needed >= 0) { |
1093 | err = snd_pcm_hw_rule_add(runtime, 0, | |
1094 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1095 | hw_rule_period_time, subs, | |
1096 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1097 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1098 | SNDRV_PCM_HW_PARAM_RATE, | |
1099 | -1); | |
1100 | if (err < 0) | |
88a8516a | 1101 | goto rep_err; |
e5779998 DM |
1102 | } |
1103 | if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0) | |
88a8516a | 1104 | goto rep_err; |
e5779998 | 1105 | return 0; |
88a8516a ON |
1106 | |
1107 | rep_err: | |
1108 | snd_usb_autosuspend(subs->stream->chip); | |
1109 | return err; | |
e5779998 DM |
1110 | } |
1111 | ||
1112 | static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction) | |
1113 | { | |
1114 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); | |
1115 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1116 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1117 | ||
1118 | subs->interface = -1; | |
e11b4e0e | 1119 | subs->altset_idx = 0; |
e5779998 DM |
1120 | runtime->hw = snd_usb_hardware; |
1121 | runtime->private_data = subs; | |
1122 | subs->pcm_substream = substream; | |
88a8516a | 1123 | /* runtime PM is also done there */ |
d24f5061 DM |
1124 | |
1125 | /* initialize DSD/DOP context */ | |
1126 | subs->dsd_dop.byte_idx = 0; | |
1127 | subs->dsd_dop.channel = 0; | |
1128 | subs->dsd_dop.marker = 1; | |
1129 | ||
e5779998 DM |
1130 | return setup_hw_info(runtime, subs); |
1131 | } | |
1132 | ||
1133 | static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction) | |
1134 | { | |
1135 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); | |
1136 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1137 | ||
b0db6063 | 1138 | stop_endpoints(subs, true); |
68e67f40 DM |
1139 | |
1140 | if (!as->chip->shutdown && subs->interface >= 0) { | |
1141 | usb_set_interface(subs->dev, subs->interface, 0); | |
1142 | subs->interface = -1; | |
1143 | } | |
1144 | ||
e5779998 | 1145 | subs->pcm_substream = NULL; |
88a8516a | 1146 | snd_usb_autosuspend(subs->stream->chip); |
edcd3633 | 1147 | |
68e67f40 | 1148 | return 0; |
edcd3633 DM |
1149 | } |
1150 | ||
1151 | /* Since a URB can handle only a single linear buffer, we must use double | |
1152 | * buffering when the data to be transferred overflows the buffer boundary. | |
1153 | * To avoid inconsistencies when updating hwptr_done, we use double buffering | |
1154 | * for all URBs. | |
1155 | */ | |
1156 | static void retire_capture_urb(struct snd_usb_substream *subs, | |
1157 | struct urb *urb) | |
1158 | { | |
1159 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1160 | unsigned int stride, frames, bytes, oldptr; | |
1161 | int i, period_elapsed = 0; | |
1162 | unsigned long flags; | |
1163 | unsigned char *cp; | |
e4cc6153 PLB |
1164 | int current_frame_number; |
1165 | ||
1166 | /* read frame number here, update pointer in critical section */ | |
1167 | current_frame_number = usb_get_current_frame_number(subs->dev); | |
edcd3633 DM |
1168 | |
1169 | stride = runtime->frame_bits >> 3; | |
1170 | ||
1171 | for (i = 0; i < urb->number_of_packets; i++) { | |
1539d4f8 | 1172 | cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset + subs->pkt_offset_adj; |
edcd3633 DM |
1173 | if (urb->iso_frame_desc[i].status && printk_ratelimit()) { |
1174 | snd_printdd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status); | |
1175 | // continue; | |
1176 | } | |
1177 | bytes = urb->iso_frame_desc[i].actual_length; | |
1178 | frames = bytes / stride; | |
1179 | if (!subs->txfr_quirk) | |
1180 | bytes = frames * stride; | |
1181 | if (bytes % (runtime->sample_bits >> 3) != 0) { | |
edcd3633 | 1182 | int oldbytes = bytes; |
edcd3633 DM |
1183 | bytes = frames * stride; |
1184 | snd_printdd(KERN_ERR "Corrected urb data len. %d->%d\n", | |
1185 | oldbytes, bytes); | |
1186 | } | |
1187 | /* update the current pointer */ | |
1188 | spin_lock_irqsave(&subs->lock, flags); | |
1189 | oldptr = subs->hwptr_done; | |
1190 | subs->hwptr_done += bytes; | |
1191 | if (subs->hwptr_done >= runtime->buffer_size * stride) | |
1192 | subs->hwptr_done -= runtime->buffer_size * stride; | |
1193 | frames = (bytes + (oldptr % stride)) / stride; | |
1194 | subs->transfer_done += frames; | |
1195 | if (subs->transfer_done >= runtime->period_size) { | |
1196 | subs->transfer_done -= runtime->period_size; | |
1197 | period_elapsed = 1; | |
1198 | } | |
e4cc6153 PLB |
1199 | /* capture delay is by construction limited to one URB, |
1200 | * reset delays here | |
1201 | */ | |
1202 | runtime->delay = subs->last_delay = 0; | |
1203 | ||
1204 | /* realign last_frame_number */ | |
1205 | subs->last_frame_number = current_frame_number; | |
1206 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1207 | ||
edcd3633 DM |
1208 | spin_unlock_irqrestore(&subs->lock, flags); |
1209 | /* copy a data chunk */ | |
1210 | if (oldptr + bytes > runtime->buffer_size * stride) { | |
1211 | unsigned int bytes1 = | |
1212 | runtime->buffer_size * stride - oldptr; | |
1213 | memcpy(runtime->dma_area + oldptr, cp, bytes1); | |
1214 | memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1); | |
1215 | } else { | |
1216 | memcpy(runtime->dma_area + oldptr, cp, bytes); | |
1217 | } | |
1218 | } | |
1219 | ||
1220 | if (period_elapsed) | |
1221 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1222 | } | |
1223 | ||
d24f5061 DM |
1224 | static inline void fill_playback_urb_dsd_dop(struct snd_usb_substream *subs, |
1225 | struct urb *urb, unsigned int bytes) | |
1226 | { | |
1227 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1228 | unsigned int stride = runtime->frame_bits >> 3; | |
1229 | unsigned int dst_idx = 0; | |
1230 | unsigned int src_idx = subs->hwptr_done; | |
1231 | unsigned int wrap = runtime->buffer_size * stride; | |
1232 | u8 *dst = urb->transfer_buffer; | |
1233 | u8 *src = runtime->dma_area; | |
1234 | u8 marker[] = { 0x05, 0xfa }; | |
1235 | ||
1236 | /* | |
1237 | * The DSP DOP format defines a way to transport DSD samples over | |
1238 | * normal PCM data endpoints. It requires stuffing of marker bytes | |
1239 | * (0x05 and 0xfa, alternating per sample frame), and then expects | |
1240 | * 2 additional bytes of actual payload. The whole frame is stored | |
1241 | * LSB. | |
1242 | * | |
1243 | * Hence, for a stereo transport, the buffer layout looks like this, | |
1244 | * where L refers to left channel samples and R to right. | |
1245 | * | |
1246 | * L1 L2 0x05 R1 R2 0x05 L3 L4 0xfa R3 R4 0xfa | |
1247 | * L5 L6 0x05 R5 R6 0x05 L7 L8 0xfa R7 R8 0xfa | |
1248 | * ..... | |
1249 | * | |
1250 | */ | |
1251 | ||
1252 | while (bytes--) { | |
1253 | if (++subs->dsd_dop.byte_idx == 3) { | |
1254 | /* frame boundary? */ | |
1255 | dst[dst_idx++] = marker[subs->dsd_dop.marker]; | |
1256 | src_idx += 2; | |
1257 | subs->dsd_dop.byte_idx = 0; | |
1258 | ||
1259 | if (++subs->dsd_dop.channel % runtime->channels == 0) { | |
1260 | /* alternate the marker */ | |
1261 | subs->dsd_dop.marker++; | |
1262 | subs->dsd_dop.marker %= ARRAY_SIZE(marker); | |
1263 | subs->dsd_dop.channel = 0; | |
1264 | } | |
1265 | } else { | |
1266 | /* stuff the DSD payload */ | |
1267 | int idx = (src_idx + subs->dsd_dop.byte_idx - 1) % wrap; | |
44dcbbb1 DM |
1268 | |
1269 | if (subs->cur_audiofmt->dsd_bitrev) | |
1270 | dst[dst_idx++] = bitrev8(src[idx]); | |
1271 | else | |
1272 | dst[dst_idx++] = src[idx]; | |
1273 | ||
d24f5061 DM |
1274 | subs->hwptr_done++; |
1275 | } | |
1276 | } | |
1277 | } | |
1278 | ||
edcd3633 DM |
1279 | static void prepare_playback_urb(struct snd_usb_substream *subs, |
1280 | struct urb *urb) | |
1281 | { | |
1282 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
245baf98 | 1283 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
edcd3633 DM |
1284 | struct snd_urb_ctx *ctx = urb->context; |
1285 | unsigned int counts, frames, bytes; | |
1286 | int i, stride, period_elapsed = 0; | |
1287 | unsigned long flags; | |
1288 | ||
1289 | stride = runtime->frame_bits >> 3; | |
1290 | ||
1291 | frames = 0; | |
1292 | urb->number_of_packets = 0; | |
1293 | spin_lock_irqsave(&subs->lock, flags); | |
1294 | for (i = 0; i < ctx->packets; i++) { | |
245baf98 DM |
1295 | if (ctx->packet_size[i]) |
1296 | counts = ctx->packet_size[i]; | |
1297 | else | |
1298 | counts = snd_usb_endpoint_next_packet_size(ep); | |
1299 | ||
edcd3633 | 1300 | /* set up descriptor */ |
8a2a74d2 DM |
1301 | urb->iso_frame_desc[i].offset = frames * ep->stride; |
1302 | urb->iso_frame_desc[i].length = counts * ep->stride; | |
edcd3633 DM |
1303 | frames += counts; |
1304 | urb->number_of_packets++; | |
1305 | subs->transfer_done += counts; | |
1306 | if (subs->transfer_done >= runtime->period_size) { | |
1307 | subs->transfer_done -= runtime->period_size; | |
1308 | period_elapsed = 1; | |
1309 | if (subs->fmt_type == UAC_FORMAT_TYPE_II) { | |
1310 | if (subs->transfer_done > 0) { | |
1311 | /* FIXME: fill-max mode is not | |
1312 | * supported yet */ | |
1313 | frames -= subs->transfer_done; | |
1314 | counts -= subs->transfer_done; | |
1315 | urb->iso_frame_desc[i].length = | |
8a2a74d2 | 1316 | counts * ep->stride; |
edcd3633 DM |
1317 | subs->transfer_done = 0; |
1318 | } | |
1319 | i++; | |
1320 | if (i < ctx->packets) { | |
1321 | /* add a transfer delimiter */ | |
1322 | urb->iso_frame_desc[i].offset = | |
8a2a74d2 | 1323 | frames * ep->stride; |
edcd3633 DM |
1324 | urb->iso_frame_desc[i].length = 0; |
1325 | urb->number_of_packets++; | |
1326 | } | |
1327 | break; | |
1328 | } | |
1329 | } | |
1330 | if (period_elapsed && | |
98ae472b | 1331 | !snd_usb_endpoint_implicit_feedback_sink(subs->data_endpoint)) /* finish at the period boundary */ |
edcd3633 DM |
1332 | break; |
1333 | } | |
8a2a74d2 | 1334 | bytes = frames * ep->stride; |
d24f5061 DM |
1335 | |
1336 | if (unlikely(subs->pcm_format == SNDRV_PCM_FORMAT_DSD_U16_LE && | |
1337 | subs->cur_audiofmt->dsd_dop)) { | |
1338 | fill_playback_urb_dsd_dop(subs, urb, bytes); | |
44dcbbb1 DM |
1339 | } else if (unlikely(subs->pcm_format == SNDRV_PCM_FORMAT_DSD_U8 && |
1340 | subs->cur_audiofmt->dsd_bitrev)) { | |
1341 | /* bit-reverse the bytes */ | |
1342 | u8 *buf = urb->transfer_buffer; | |
1343 | for (i = 0; i < bytes; i++) { | |
1344 | int idx = (subs->hwptr_done + i) | |
1345 | % (runtime->buffer_size * stride); | |
1346 | buf[i] = bitrev8(runtime->dma_area[idx]); | |
1347 | } | |
1348 | ||
1349 | subs->hwptr_done += bytes; | |
edcd3633 | 1350 | } else { |
d24f5061 DM |
1351 | /* usual PCM */ |
1352 | if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { | |
1353 | /* err, the transferred area goes over buffer boundary. */ | |
1354 | unsigned int bytes1 = | |
1355 | runtime->buffer_size * stride - subs->hwptr_done; | |
1356 | memcpy(urb->transfer_buffer, | |
1357 | runtime->dma_area + subs->hwptr_done, bytes1); | |
1358 | memcpy(urb->transfer_buffer + bytes1, | |
1359 | runtime->dma_area, bytes - bytes1); | |
1360 | } else { | |
1361 | memcpy(urb->transfer_buffer, | |
1362 | runtime->dma_area + subs->hwptr_done, bytes); | |
1363 | } | |
1364 | ||
1365 | subs->hwptr_done += bytes; | |
edcd3633 | 1366 | } |
d24f5061 | 1367 | |
edcd3633 DM |
1368 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1369 | subs->hwptr_done -= runtime->buffer_size * stride; | |
fbcfbf5f DM |
1370 | |
1371 | /* update delay with exact number of samples queued */ | |
1372 | runtime->delay = subs->last_delay; | |
edcd3633 | 1373 | runtime->delay += frames; |
fbcfbf5f DM |
1374 | subs->last_delay = runtime->delay; |
1375 | ||
1376 | /* realign last_frame_number */ | |
1377 | subs->last_frame_number = usb_get_current_frame_number(subs->dev); | |
1378 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1379 | ||
edcd3633 DM |
1380 | spin_unlock_irqrestore(&subs->lock, flags); |
1381 | urb->transfer_buffer_length = bytes; | |
1382 | if (period_elapsed) | |
1383 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1384 | } | |
1385 | ||
1386 | /* | |
1387 | * process after playback data complete | |
1388 | * - decrease the delay count again | |
1389 | */ | |
1390 | static void retire_playback_urb(struct snd_usb_substream *subs, | |
1391 | struct urb *urb) | |
1392 | { | |
1393 | unsigned long flags; | |
1394 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
8a2a74d2 DM |
1395 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
1396 | int processed = urb->transfer_buffer_length / ep->stride; | |
fbcfbf5f | 1397 | int est_delay; |
edcd3633 | 1398 | |
1213a205 TI |
1399 | /* ignore the delay accounting when procssed=0 is given, i.e. |
1400 | * silent payloads are procssed before handling the actual data | |
1401 | */ | |
1402 | if (!processed) | |
1403 | return; | |
1404 | ||
edcd3633 | 1405 | spin_lock_irqsave(&subs->lock, flags); |
48779a0b TI |
1406 | if (!subs->last_delay) |
1407 | goto out; /* short path */ | |
1408 | ||
fbcfbf5f DM |
1409 | est_delay = snd_usb_pcm_delay(subs, runtime->rate); |
1410 | /* update delay with exact number of samples played */ | |
1411 | if (processed > subs->last_delay) | |
1412 | subs->last_delay = 0; | |
edcd3633 | 1413 | else |
fbcfbf5f DM |
1414 | subs->last_delay -= processed; |
1415 | runtime->delay = subs->last_delay; | |
1416 | ||
1417 | /* | |
1418 | * Report when delay estimate is off by more than 2ms. | |
1419 | * The error should be lower than 2ms since the estimate relies | |
1420 | * on two reads of a counter updated every ms. | |
1421 | */ | |
1422 | if (abs(est_delay - subs->last_delay) * 1000 > runtime->rate * 2) | |
1423 | snd_printk(KERN_DEBUG "delay: estimated %d, actual %d\n", | |
1424 | est_delay, subs->last_delay); | |
1425 | ||
48779a0b TI |
1426 | if (!subs->running) { |
1427 | /* update last_frame_number for delay counting here since | |
1428 | * prepare_playback_urb won't be called during pause | |
1429 | */ | |
1430 | subs->last_frame_number = | |
1431 | usb_get_current_frame_number(subs->dev) & 0xff; | |
1432 | } | |
1433 | ||
1434 | out: | |
edcd3633 | 1435 | spin_unlock_irqrestore(&subs->lock, flags); |
e5779998 DM |
1436 | } |
1437 | ||
1438 | static int snd_usb_playback_open(struct snd_pcm_substream *substream) | |
1439 | { | |
1440 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK); | |
1441 | } | |
1442 | ||
1443 | static int snd_usb_playback_close(struct snd_pcm_substream *substream) | |
1444 | { | |
1445 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK); | |
1446 | } | |
1447 | ||
1448 | static int snd_usb_capture_open(struct snd_pcm_substream *substream) | |
1449 | { | |
1450 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE); | |
1451 | } | |
1452 | ||
1453 | static int snd_usb_capture_close(struct snd_pcm_substream *substream) | |
1454 | { | |
1455 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE); | |
1456 | } | |
1457 | ||
edcd3633 DM |
1458 | static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, |
1459 | int cmd) | |
1460 | { | |
1461 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1462 | ||
1463 | switch (cmd) { | |
1464 | case SNDRV_PCM_TRIGGER_START: | |
1465 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1466 | subs->data_endpoint->prepare_data_urb = prepare_playback_urb; | |
1467 | subs->data_endpoint->retire_data_urb = retire_playback_urb; | |
97f8d3b6 | 1468 | subs->running = 1; |
edcd3633 DM |
1469 | return 0; |
1470 | case SNDRV_PCM_TRIGGER_STOP: | |
a9bb3626 | 1471 | stop_endpoints(subs, false); |
97f8d3b6 | 1472 | subs->running = 0; |
edcd3633 DM |
1473 | return 0; |
1474 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1475 | subs->data_endpoint->prepare_data_urb = NULL; | |
48779a0b TI |
1476 | /* keep retire_data_urb for delay calculation */ |
1477 | subs->data_endpoint->retire_data_urb = retire_playback_urb; | |
97f8d3b6 | 1478 | subs->running = 0; |
edcd3633 DM |
1479 | return 0; |
1480 | } | |
1481 | ||
1482 | return -EINVAL; | |
1483 | } | |
1484 | ||
afe25967 DM |
1485 | static int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, |
1486 | int cmd) | |
edcd3633 DM |
1487 | { |
1488 | int err; | |
1489 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1490 | ||
1491 | switch (cmd) { | |
1492 | case SNDRV_PCM_TRIGGER_START: | |
a9bb3626 | 1493 | err = start_endpoints(subs, false); |
edcd3633 DM |
1494 | if (err < 0) |
1495 | return err; | |
1496 | ||
1497 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1498 | subs->running = 1; |
edcd3633 DM |
1499 | return 0; |
1500 | case SNDRV_PCM_TRIGGER_STOP: | |
a9bb3626 | 1501 | stop_endpoints(subs, false); |
97f8d3b6 | 1502 | subs->running = 0; |
edcd3633 DM |
1503 | return 0; |
1504 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1505 | subs->data_endpoint->retire_data_urb = NULL; | |
97f8d3b6 | 1506 | subs->running = 0; |
edcd3633 DM |
1507 | return 0; |
1508 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1509 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1510 | subs->running = 1; |
edcd3633 DM |
1511 | return 0; |
1512 | } | |
1513 | ||
1514 | return -EINVAL; | |
1515 | } | |
1516 | ||
e5779998 DM |
1517 | static struct snd_pcm_ops snd_usb_playback_ops = { |
1518 | .open = snd_usb_playback_open, | |
1519 | .close = snd_usb_playback_close, | |
1520 | .ioctl = snd_pcm_lib_ioctl, | |
1521 | .hw_params = snd_usb_hw_params, | |
1522 | .hw_free = snd_usb_hw_free, | |
1523 | .prepare = snd_usb_pcm_prepare, | |
1524 | .trigger = snd_usb_substream_playback_trigger, | |
1525 | .pointer = snd_usb_pcm_pointer, | |
1526 | .page = snd_pcm_lib_get_vmalloc_page, | |
1527 | .mmap = snd_pcm_lib_mmap_vmalloc, | |
1528 | }; | |
1529 | ||
1530 | static struct snd_pcm_ops snd_usb_capture_ops = { | |
1531 | .open = snd_usb_capture_open, | |
1532 | .close = snd_usb_capture_close, | |
1533 | .ioctl = snd_pcm_lib_ioctl, | |
1534 | .hw_params = snd_usb_hw_params, | |
1535 | .hw_free = snd_usb_hw_free, | |
1536 | .prepare = snd_usb_pcm_prepare, | |
1537 | .trigger = snd_usb_substream_capture_trigger, | |
1538 | .pointer = snd_usb_pcm_pointer, | |
1539 | .page = snd_pcm_lib_get_vmalloc_page, | |
1540 | .mmap = snd_pcm_lib_mmap_vmalloc, | |
1541 | }; | |
1542 | ||
1543 | void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream) | |
1544 | { | |
1545 | snd_pcm_set_ops(pcm, stream, | |
1546 | stream == SNDRV_PCM_STREAM_PLAYBACK ? | |
1547 | &snd_usb_playback_ops : &snd_usb_capture_ops); | |
1548 | } |