]>
Commit | Line | Data |
---|---|---|
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> |
edcd3633 | 19 | #include <linux/ratelimit.h> |
e5779998 DM |
20 | #include <linux/usb.h> |
21 | #include <linux/usb/audio.h> | |
7e847894 | 22 | #include <linux/usb/audio-v2.h> |
e5779998 DM |
23 | |
24 | #include <sound/core.h> | |
25 | #include <sound/pcm.h> | |
26 | #include <sound/pcm_params.h> | |
27 | ||
28 | #include "usbaudio.h" | |
29 | #include "card.h" | |
30 | #include "quirks.h" | |
31 | #include "debug.h" | |
c731bc96 | 32 | #include "endpoint.h" |
e5779998 DM |
33 | #include "helper.h" |
34 | #include "pcm.h" | |
79f920fb | 35 | #include "clock.h" |
88a8516a | 36 | #include "power.h" |
e5779998 | 37 | |
edcd3633 DM |
38 | #define SUBSTREAM_FLAG_DATA_EP_STARTED 0 |
39 | #define SUBSTREAM_FLAG_SYNC_EP_STARTED 1 | |
40 | ||
294c4fb8 PLB |
41 | /* return the estimated delay based on USB frame counters */ |
42 | snd_pcm_uframes_t snd_usb_pcm_delay(struct snd_usb_substream *subs, | |
43 | unsigned int rate) | |
44 | { | |
45 | int current_frame_number; | |
46 | int frame_diff; | |
47 | int est_delay; | |
48 | ||
49 | current_frame_number = usb_get_current_frame_number(subs->dev); | |
50 | /* | |
51 | * HCD implementations use different widths, use lower 8 bits. | |
52 | * The delay will be managed up to 256ms, which is more than | |
53 | * enough | |
54 | */ | |
55 | frame_diff = (current_frame_number - subs->last_frame_number) & 0xff; | |
56 | ||
57 | /* Approximation based on number of samples per USB frame (ms), | |
58 | some truncation for 44.1 but the estimate is good enough */ | |
59 | est_delay = subs->last_delay - (frame_diff * rate / 1000); | |
60 | if (est_delay < 0) | |
61 | est_delay = 0; | |
62 | return est_delay; | |
63 | } | |
64 | ||
e5779998 DM |
65 | /* |
66 | * return the current pcm pointer. just based on the hwptr_done value. | |
67 | */ | |
68 | static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream) | |
69 | { | |
70 | struct snd_usb_substream *subs; | |
71 | unsigned int hwptr_done; | |
72 | ||
73 | subs = (struct snd_usb_substream *)substream->runtime->private_data; | |
978520b7 TI |
74 | if (subs->stream->chip->shutdown) |
75 | return SNDRV_PCM_POS_XRUN; | |
e5779998 DM |
76 | spin_lock(&subs->lock); |
77 | hwptr_done = subs->hwptr_done; | |
294c4fb8 PLB |
78 | substream->runtime->delay = snd_usb_pcm_delay(subs, |
79 | substream->runtime->rate); | |
e5779998 DM |
80 | spin_unlock(&subs->lock); |
81 | return hwptr_done / (substream->runtime->frame_bits >> 3); | |
82 | } | |
83 | ||
84 | /* | |
85 | * find a matching audio format | |
86 | */ | |
61a70950 | 87 | static struct audioformat *find_format(struct snd_usb_substream *subs) |
e5779998 DM |
88 | { |
89 | struct list_head *p; | |
90 | struct audioformat *found = NULL; | |
91 | int cur_attr = 0, attr; | |
92 | ||
93 | list_for_each(p, &subs->fmt_list) { | |
94 | struct audioformat *fp; | |
95 | fp = list_entry(p, struct audioformat, list); | |
61a70950 | 96 | if (!(fp->formats & (1uLL << subs->pcm_format))) |
015eb0b0 | 97 | continue; |
61a70950 | 98 | if (fp->channels != subs->channels) |
e5779998 | 99 | continue; |
61a70950 DR |
100 | if (subs->cur_rate < fp->rate_min || |
101 | subs->cur_rate > fp->rate_max) | |
e5779998 DM |
102 | continue; |
103 | if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { | |
104 | unsigned int i; | |
105 | for (i = 0; i < fp->nr_rates; i++) | |
61a70950 | 106 | if (fp->rate_table[i] == subs->cur_rate) |
e5779998 DM |
107 | break; |
108 | if (i >= fp->nr_rates) | |
109 | continue; | |
110 | } | |
111 | attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
112 | if (! found) { | |
113 | found = fp; | |
114 | cur_attr = attr; | |
115 | continue; | |
116 | } | |
117 | /* avoid async out and adaptive in if the other method | |
118 | * supports the same format. | |
119 | * this is a workaround for the case like | |
120 | * M-audio audiophile USB. | |
121 | */ | |
122 | if (attr != cur_attr) { | |
123 | if ((attr == USB_ENDPOINT_SYNC_ASYNC && | |
124 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
125 | (attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
126 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) | |
127 | continue; | |
128 | if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC && | |
129 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
130 | (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
131 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { | |
132 | found = fp; | |
133 | cur_attr = attr; | |
134 | continue; | |
135 | } | |
136 | } | |
137 | /* find the format with the largest max. packet size */ | |
138 | if (fp->maxpacksize > found->maxpacksize) { | |
139 | found = fp; | |
140 | cur_attr = attr; | |
141 | } | |
142 | } | |
143 | return found; | |
144 | } | |
145 | ||
767d75ad DM |
146 | static int init_pitch_v1(struct snd_usb_audio *chip, int iface, |
147 | struct usb_host_interface *alts, | |
148 | struct audioformat *fmt) | |
149 | { | |
150 | struct usb_device *dev = chip->dev; | |
151 | unsigned int ep; | |
152 | unsigned char data[1]; | |
153 | int err; | |
154 | ||
155 | ep = get_endpoint(alts, 0)->bEndpointAddress; | |
156 | ||
767d75ad DM |
157 | data[0] = 1; |
158 | if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, | |
159 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, | |
160 | UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, | |
17d900c4 | 161 | data, sizeof(data))) < 0) { |
767d75ad DM |
162 | snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n", |
163 | dev->devnum, iface, ep); | |
164 | return err; | |
165 | } | |
166 | ||
167 | return 0; | |
168 | } | |
e5779998 | 169 | |
92c25611 DM |
170 | static int init_pitch_v2(struct snd_usb_audio *chip, int iface, |
171 | struct usb_host_interface *alts, | |
172 | struct audioformat *fmt) | |
173 | { | |
174 | struct usb_device *dev = chip->dev; | |
175 | unsigned char data[1]; | |
92c25611 DM |
176 | int err; |
177 | ||
92c25611 DM |
178 | data[0] = 1; |
179 | if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR, | |
180 | USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT, | |
181 | UAC2_EP_CS_PITCH << 8, 0, | |
17d900c4 | 182 | data, sizeof(data))) < 0) { |
92c25611 DM |
183 | snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH (v2)\n", |
184 | dev->devnum, iface, fmt->altsetting); | |
185 | return err; | |
186 | } | |
187 | ||
188 | return 0; | |
189 | } | |
190 | ||
e5779998 | 191 | /* |
92c25611 | 192 | * initialize the pitch control and sample rate |
e5779998 | 193 | */ |
767d75ad | 194 | int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface, |
e5779998 DM |
195 | struct usb_host_interface *alts, |
196 | struct audioformat *fmt) | |
197 | { | |
767d75ad DM |
198 | struct usb_interface_descriptor *altsd = get_iface_desc(alts); |
199 | ||
92c25611 DM |
200 | /* if endpoint doesn't have pitch control, bail out */ |
201 | if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) | |
202 | return 0; | |
203 | ||
767d75ad DM |
204 | switch (altsd->bInterfaceProtocol) { |
205 | case UAC_VERSION_1: | |
a2acad82 | 206 | default: |
767d75ad DM |
207 | return init_pitch_v1(chip, iface, alts, fmt); |
208 | ||
209 | case UAC_VERSION_2: | |
92c25611 | 210 | return init_pitch_v2(chip, iface, alts, fmt); |
767d75ad | 211 | } |
767d75ad DM |
212 | } |
213 | ||
a9bb3626 | 214 | static int start_endpoints(struct snd_usb_substream *subs, bool can_sleep) |
edcd3633 DM |
215 | { |
216 | int err; | |
217 | ||
218 | if (!subs->data_endpoint) | |
219 | return -EINVAL; | |
220 | ||
221 | if (!test_and_set_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) { | |
222 | struct snd_usb_endpoint *ep = subs->data_endpoint; | |
223 | ||
224 | snd_printdd(KERN_DEBUG "Starting data EP @%p\n", ep); | |
225 | ||
226 | ep->data_subs = subs; | |
015618b9 | 227 | err = snd_usb_endpoint_start(ep, can_sleep); |
edcd3633 DM |
228 | if (err < 0) { |
229 | clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags); | |
230 | return err; | |
231 | } | |
232 | } | |
233 | ||
234 | if (subs->sync_endpoint && | |
235 | !test_and_set_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) { | |
236 | struct snd_usb_endpoint *ep = subs->sync_endpoint; | |
237 | ||
2e4a263c DM |
238 | if (subs->data_endpoint->iface != subs->sync_endpoint->iface || |
239 | subs->data_endpoint->alt_idx != subs->sync_endpoint->alt_idx) { | |
240 | err = usb_set_interface(subs->dev, | |
241 | subs->sync_endpoint->iface, | |
242 | subs->sync_endpoint->alt_idx); | |
243 | if (err < 0) { | |
244 | snd_printk(KERN_ERR | |
245 | "%d:%d:%d: cannot set interface (%d)\n", | |
246 | subs->dev->devnum, | |
247 | subs->sync_endpoint->iface, | |
248 | subs->sync_endpoint->alt_idx, err); | |
249 | return -EIO; | |
250 | } | |
251 | } | |
252 | ||
edcd3633 DM |
253 | snd_printdd(KERN_DEBUG "Starting sync EP @%p\n", ep); |
254 | ||
255 | ep->sync_slave = subs->data_endpoint; | |
015618b9 | 256 | err = snd_usb_endpoint_start(ep, can_sleep); |
edcd3633 DM |
257 | if (err < 0) { |
258 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); | |
259 | return err; | |
260 | } | |
261 | } | |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
a9bb3626 | 266 | static void stop_endpoints(struct snd_usb_substream *subs, bool wait) |
edcd3633 DM |
267 | { |
268 | if (test_and_clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) | |
a9bb3626 | 269 | snd_usb_endpoint_stop(subs->sync_endpoint, wait); |
edcd3633 DM |
270 | |
271 | if (test_and_clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) | |
a9bb3626 | 272 | snd_usb_endpoint_stop(subs->data_endpoint, wait); |
edcd3633 DM |
273 | } |
274 | ||
edcd3633 DM |
275 | static int deactivate_endpoints(struct snd_usb_substream *subs) |
276 | { | |
277 | int reta, retb; | |
278 | ||
279 | reta = snd_usb_endpoint_deactivate(subs->sync_endpoint); | |
280 | retb = snd_usb_endpoint_deactivate(subs->data_endpoint); | |
281 | ||
282 | if (reta < 0) | |
283 | return reta; | |
284 | ||
285 | if (retb < 0) | |
286 | return retb; | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
e5779998 DM |
291 | /* |
292 | * find a matching format and set up the interface | |
293 | */ | |
294 | static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) | |
295 | { | |
296 | struct usb_device *dev = subs->dev; | |
297 | struct usb_host_interface *alts; | |
298 | struct usb_interface_descriptor *altsd; | |
299 | struct usb_interface *iface; | |
300 | unsigned int ep, attr; | |
301 | int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; | |
c75a8a7a | 302 | int err, implicit_fb = 0; |
e5779998 DM |
303 | |
304 | iface = usb_ifnum_to_if(dev, fmt->iface); | |
305 | if (WARN_ON(!iface)) | |
306 | return -EINVAL; | |
307 | alts = &iface->altsetting[fmt->altset_idx]; | |
308 | altsd = get_iface_desc(alts); | |
309 | if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting)) | |
310 | return -EINVAL; | |
311 | ||
312 | if (fmt == subs->cur_audiofmt) | |
313 | return 0; | |
314 | ||
68e67f40 DM |
315 | /* close the old interface */ |
316 | if (subs->interface >= 0 && subs->interface != fmt->iface) { | |
317 | err = usb_set_interface(subs->dev, subs->interface, 0); | |
318 | if (err < 0) { | |
319 | snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed (%d)\n", | |
320 | dev->devnum, fmt->iface, fmt->altsetting, err); | |
321 | return -EIO; | |
322 | } | |
323 | subs->interface = -1; | |
324 | subs->altset_idx = 0; | |
325 | } | |
326 | ||
327 | /* set interface */ | |
328 | if (subs->interface != fmt->iface || | |
329 | subs->altset_idx != fmt->altset_idx) { | |
330 | err = usb_set_interface(dev, fmt->iface, fmt->altsetting); | |
331 | if (err < 0) { | |
332 | snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed (%d)\n", | |
333 | dev->devnum, fmt->iface, fmt->altsetting, err); | |
334 | return -EIO; | |
335 | } | |
336 | snd_printdd(KERN_INFO "setting usb interface %d:%d\n", | |
337 | fmt->iface, fmt->altsetting); | |
338 | subs->interface = fmt->iface; | |
339 | subs->altset_idx = fmt->altset_idx; | |
340 | } | |
341 | ||
edcd3633 DM |
342 | subs->data_endpoint = snd_usb_add_endpoint(subs->stream->chip, |
343 | alts, fmt->endpoint, subs->direction, | |
344 | SND_USB_ENDPOINT_TYPE_DATA); | |
345 | if (!subs->data_endpoint) | |
346 | return -EINVAL; | |
e5779998 DM |
347 | |
348 | /* we need a sync pipe in async OUT or adaptive IN mode */ | |
349 | /* check the number of EP, since some devices have broken | |
350 | * descriptors which fool us. if it has only one EP, | |
351 | * assume it as adaptive-out or sync-in. | |
352 | */ | |
353 | attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
c75a8a7a DM |
354 | |
355 | switch (subs->stream->chip->usb_id) { | |
356 | case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */ | |
357 | case USB_ID(0x0763, 0x2081): | |
358 | if (is_playback) { | |
359 | implicit_fb = 1; | |
edcd3633 DM |
360 | ep = 0x81; |
361 | iface = usb_ifnum_to_if(dev, 2); | |
c75a8a7a DM |
362 | |
363 | if (!iface || iface->num_altsetting == 0) | |
364 | return -EINVAL; | |
365 | ||
edcd3633 DM |
366 | alts = &iface->altsetting[1]; |
367 | goto add_sync_ep; | |
368 | } | |
c75a8a7a | 369 | } |
edcd3633 | 370 | |
c75a8a7a DM |
371 | if (((is_playback && attr == USB_ENDPOINT_SYNC_ASYNC) || |
372 | (!is_playback && attr == USB_ENDPOINT_SYNC_ADAPTIVE)) && | |
373 | altsd->bNumEndpoints >= 2) { | |
e5779998 DM |
374 | /* check sync-pipe endpoint */ |
375 | /* ... and check descriptor size before accessing bSynchAddress | |
376 | because there is a version of the SB Audigy 2 NX firmware lacking | |
377 | the audio fields in the endpoint descriptors */ | |
378 | if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 || | |
379 | (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && | |
c75a8a7a DM |
380 | get_endpoint(alts, 1)->bSynchAddress != 0 && |
381 | !implicit_fb)) { | |
7fb75db1 DM |
382 | snd_printk(KERN_ERR "%d:%d:%d : invalid sync pipe. bmAttributes %02x, bLength %d, bSynchAddress %02x\n", |
383 | dev->devnum, fmt->iface, fmt->altsetting, | |
384 | get_endpoint(alts, 1)->bmAttributes, | |
385 | get_endpoint(alts, 1)->bLength, | |
386 | get_endpoint(alts, 1)->bSynchAddress); | |
e5779998 DM |
387 | return -EINVAL; |
388 | } | |
389 | ep = get_endpoint(alts, 1)->bEndpointAddress; | |
7fb75db1 DM |
390 | if (!implicit_fb && |
391 | get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && | |
e5779998 | 392 | (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || |
7fb75db1 DM |
393 | (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { |
394 | snd_printk(KERN_ERR "%d:%d:%d : invalid sync pipe. is_playback %d, ep %02x, bSynchAddress %02x\n", | |
395 | dev->devnum, fmt->iface, fmt->altsetting, | |
396 | is_playback, ep, get_endpoint(alts, 0)->bSynchAddress); | |
e5779998 DM |
397 | return -EINVAL; |
398 | } | |
c75a8a7a DM |
399 | |
400 | implicit_fb = (get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_USAGE_MASK) | |
401 | == USB_ENDPOINT_USAGE_IMPLICIT_FB; | |
402 | ||
edcd3633 DM |
403 | add_sync_ep: |
404 | subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, | |
405 | alts, ep, !subs->direction, | |
c75a8a7a DM |
406 | implicit_fb ? |
407 | SND_USB_ENDPOINT_TYPE_DATA : | |
408 | SND_USB_ENDPOINT_TYPE_SYNC); | |
edcd3633 DM |
409 | if (!subs->sync_endpoint) |
410 | return -EINVAL; | |
411 | ||
412 | subs->data_endpoint->sync_master = subs->sync_endpoint; | |
413 | } | |
e5779998 | 414 | |
9e9b5946 | 415 | if ((err = snd_usb_init_pitch(subs->stream->chip, fmt->iface, alts, fmt)) < 0) |
e5779998 DM |
416 | return err; |
417 | ||
418 | subs->cur_audiofmt = fmt; | |
419 | ||
420 | snd_usb_set_format_quirk(subs, fmt); | |
421 | ||
422 | #if 0 | |
423 | printk(KERN_DEBUG | |
424 | "setting done: format = %d, rate = %d..%d, channels = %d\n", | |
425 | fmt->format, fmt->rate_min, fmt->rate_max, fmt->channels); | |
426 | printk(KERN_DEBUG | |
427 | " datapipe = 0x%0x, syncpipe = 0x%0x\n", | |
428 | subs->datapipe, subs->syncpipe); | |
429 | #endif | |
430 | ||
431 | return 0; | |
432 | } | |
433 | ||
61a70950 DR |
434 | /* |
435 | * configure endpoint params | |
436 | * | |
437 | * called during initial setup and upon resume | |
438 | */ | |
439 | static int configure_endpoint(struct snd_usb_substream *subs) | |
440 | { | |
441 | int ret; | |
442 | ||
61a70950 | 443 | /* format changed */ |
a9bb3626 | 444 | stop_endpoints(subs, false); |
61a70950 DR |
445 | ret = snd_usb_endpoint_set_params(subs->data_endpoint, |
446 | subs->pcm_format, | |
447 | subs->channels, | |
448 | subs->period_bytes, | |
449 | subs->cur_rate, | |
450 | subs->cur_audiofmt, | |
451 | subs->sync_endpoint); | |
452 | if (ret < 0) | |
978520b7 | 453 | return ret; |
61a70950 DR |
454 | |
455 | if (subs->sync_endpoint) | |
456 | ret = snd_usb_endpoint_set_params(subs->data_endpoint, | |
457 | subs->pcm_format, | |
458 | subs->channels, | |
459 | subs->period_bytes, | |
460 | subs->cur_rate, | |
461 | subs->cur_audiofmt, | |
462 | NULL); | |
61a70950 DR |
463 | return ret; |
464 | } | |
465 | ||
e5779998 DM |
466 | /* |
467 | * hw_params callback | |
468 | * | |
469 | * allocate a buffer and set the given audio format. | |
470 | * | |
471 | * so far we use a physically linear buffer although packetize transfer | |
472 | * doesn't need a continuous area. | |
473 | * if sg buffer is supported on the later version of alsa, we'll follow | |
474 | * that. | |
475 | */ | |
476 | static int snd_usb_hw_params(struct snd_pcm_substream *substream, | |
477 | struct snd_pcm_hw_params *hw_params) | |
478 | { | |
479 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
480 | struct audioformat *fmt; | |
61a70950 | 481 | int ret; |
e5779998 DM |
482 | |
483 | ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, | |
484 | params_buffer_bytes(hw_params)); | |
485 | if (ret < 0) | |
486 | return ret; | |
487 | ||
61a70950 DR |
488 | subs->pcm_format = params_format(hw_params); |
489 | subs->period_bytes = params_period_bytes(hw_params); | |
490 | subs->channels = params_channels(hw_params); | |
491 | subs->cur_rate = params_rate(hw_params); | |
492 | ||
493 | fmt = find_format(subs); | |
e5779998 DM |
494 | if (!fmt) { |
495 | snd_printd(KERN_DEBUG "cannot set format: format = %#x, rate = %d, channels = %d\n", | |
61a70950 | 496 | subs->pcm_format, subs->cur_rate, subs->channels); |
e5779998 DM |
497 | return -EINVAL; |
498 | } | |
499 | ||
34f3c89f | 500 | down_read(&subs->stream->chip->shutdown_rwsem); |
978520b7 TI |
501 | if (subs->stream->chip->shutdown) |
502 | ret = -ENODEV; | |
503 | else | |
504 | ret = set_format(subs, fmt); | |
34f3c89f | 505 | up_read(&subs->stream->chip->shutdown_rwsem); |
978520b7 | 506 | if (ret < 0) |
e5779998 DM |
507 | return ret; |
508 | ||
61a70950 DR |
509 | subs->interface = fmt->iface; |
510 | subs->altset_idx = fmt->altset_idx; | |
384dc085 | 511 | subs->need_setup_ep = true; |
715a1705 | 512 | |
61a70950 | 513 | return 0; |
e5779998 DM |
514 | } |
515 | ||
516 | /* | |
517 | * hw_free callback | |
518 | * | |
519 | * reset the audio format and release the buffer | |
520 | */ | |
521 | static int snd_usb_hw_free(struct snd_pcm_substream *substream) | |
522 | { | |
523 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
524 | ||
525 | subs->cur_audiofmt = NULL; | |
526 | subs->cur_rate = 0; | |
527 | subs->period_bytes = 0; | |
34f3c89f | 528 | down_read(&subs->stream->chip->shutdown_rwsem); |
978520b7 | 529 | if (!subs->stream->chip->shutdown) { |
a9bb3626 | 530 | stop_endpoints(subs, true); |
978520b7 TI |
531 | deactivate_endpoints(subs); |
532 | } | |
34f3c89f | 533 | up_read(&subs->stream->chip->shutdown_rwsem); |
e5779998 DM |
534 | return snd_pcm_lib_free_vmalloc_buffer(substream); |
535 | } | |
536 | ||
537 | /* | |
538 | * prepare callback | |
539 | * | |
540 | * only a few subtle things... | |
541 | */ | |
542 | static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) | |
543 | { | |
544 | struct snd_pcm_runtime *runtime = substream->runtime; | |
545 | struct snd_usb_substream *subs = runtime->private_data; | |
61a70950 DR |
546 | struct usb_host_interface *alts; |
547 | struct usb_interface *iface; | |
548 | int ret; | |
e5779998 DM |
549 | |
550 | if (! subs->cur_audiofmt) { | |
551 | snd_printk(KERN_ERR "usbaudio: no format is specified!\n"); | |
552 | return -ENXIO; | |
553 | } | |
554 | ||
34f3c89f | 555 | down_read(&subs->stream->chip->shutdown_rwsem); |
978520b7 TI |
556 | if (subs->stream->chip->shutdown) { |
557 | ret = -ENODEV; | |
558 | goto unlock; | |
559 | } | |
560 | if (snd_BUG_ON(!subs->data_endpoint)) { | |
561 | ret = -EIO; | |
562 | goto unlock; | |
563 | } | |
edcd3633 | 564 | |
f58161ba TI |
565 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); |
566 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
567 | ||
61a70950 DR |
568 | ret = set_format(subs, subs->cur_audiofmt); |
569 | if (ret < 0) | |
978520b7 | 570 | goto unlock; |
61a70950 DR |
571 | |
572 | iface = usb_ifnum_to_if(subs->dev, subs->cur_audiofmt->iface); | |
573 | alts = &iface->altsetting[subs->cur_audiofmt->altset_idx]; | |
574 | ret = snd_usb_init_sample_rate(subs->stream->chip, | |
575 | subs->cur_audiofmt->iface, | |
576 | alts, | |
577 | subs->cur_audiofmt, | |
578 | subs->cur_rate); | |
579 | if (ret < 0) | |
978520b7 | 580 | goto unlock; |
61a70950 | 581 | |
384dc085 TI |
582 | if (subs->need_setup_ep) { |
583 | ret = configure_endpoint(subs); | |
584 | if (ret < 0) | |
978520b7 | 585 | goto unlock; |
384dc085 TI |
586 | subs->need_setup_ep = false; |
587 | } | |
61a70950 | 588 | |
e5779998 | 589 | /* some unit conversions in runtime */ |
edcd3633 DM |
590 | subs->data_endpoint->maxframesize = |
591 | bytes_to_frames(runtime, subs->data_endpoint->maxpacksize); | |
592 | subs->data_endpoint->curframesize = | |
593 | bytes_to_frames(runtime, subs->data_endpoint->curpacksize); | |
e5779998 DM |
594 | |
595 | /* reset the pointer */ | |
596 | subs->hwptr_done = 0; | |
597 | subs->transfer_done = 0; | |
294c4fb8 PLB |
598 | subs->last_delay = 0; |
599 | subs->last_frame_number = 0; | |
e5779998 DM |
600 | runtime->delay = 0; |
601 | ||
edcd3633 DM |
602 | /* for playback, submit the URBs now; otherwise, the first hwptr_done |
603 | * updates for all URBs would happen at the same time when starting */ | |
604 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) | |
a9bb3626 | 605 | ret = start_endpoints(subs, true); |
edcd3633 | 606 | |
978520b7 | 607 | unlock: |
34f3c89f | 608 | up_read(&subs->stream->chip->shutdown_rwsem); |
978520b7 | 609 | return ret; |
e5779998 DM |
610 | } |
611 | ||
612 | static struct snd_pcm_hardware snd_usb_hardware = | |
613 | { | |
614 | .info = SNDRV_PCM_INFO_MMAP | | |
615 | SNDRV_PCM_INFO_MMAP_VALID | | |
616 | SNDRV_PCM_INFO_BATCH | | |
617 | SNDRV_PCM_INFO_INTERLEAVED | | |
618 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
619 | SNDRV_PCM_INFO_PAUSE, | |
620 | .buffer_bytes_max = 1024 * 1024, | |
621 | .period_bytes_min = 64, | |
622 | .period_bytes_max = 512 * 1024, | |
623 | .periods_min = 2, | |
624 | .periods_max = 1024, | |
625 | }; | |
626 | ||
627 | static int hw_check_valid_format(struct snd_usb_substream *subs, | |
628 | struct snd_pcm_hw_params *params, | |
629 | struct audioformat *fp) | |
630 | { | |
631 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
632 | struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
633 | struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
634 | struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
015eb0b0 | 635 | struct snd_mask check_fmts; |
e5779998 DM |
636 | unsigned int ptime; |
637 | ||
638 | /* check the format */ | |
015eb0b0 CL |
639 | snd_mask_none(&check_fmts); |
640 | check_fmts.bits[0] = (u32)fp->formats; | |
641 | check_fmts.bits[1] = (u32)(fp->formats >> 32); | |
642 | snd_mask_intersect(&check_fmts, fmts); | |
643 | if (snd_mask_empty(&check_fmts)) { | |
e5779998 DM |
644 | hwc_debug(" > check: no supported format %d\n", fp->format); |
645 | return 0; | |
646 | } | |
647 | /* check the channels */ | |
648 | if (fp->channels < ct->min || fp->channels > ct->max) { | |
649 | hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); | |
650 | return 0; | |
651 | } | |
652 | /* check the rate is within the range */ | |
653 | if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { | |
654 | hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); | |
655 | return 0; | |
656 | } | |
657 | if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { | |
658 | hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); | |
659 | return 0; | |
660 | } | |
661 | /* check whether the period time is >= the data packet interval */ | |
978520b7 | 662 | if (subs->speed != USB_SPEED_FULL) { |
e5779998 DM |
663 | ptime = 125 * (1 << fp->datainterval); |
664 | if (ptime > pt->max || (ptime == pt->max && pt->openmax)) { | |
665 | hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max); | |
666 | return 0; | |
667 | } | |
668 | } | |
669 | return 1; | |
670 | } | |
671 | ||
672 | static int hw_rule_rate(struct snd_pcm_hw_params *params, | |
673 | struct snd_pcm_hw_rule *rule) | |
674 | { | |
675 | struct snd_usb_substream *subs = rule->private; | |
676 | struct list_head *p; | |
677 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
678 | unsigned int rmin, rmax; | |
679 | int changed; | |
680 | ||
681 | hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); | |
682 | changed = 0; | |
683 | rmin = rmax = 0; | |
684 | list_for_each(p, &subs->fmt_list) { | |
685 | struct audioformat *fp; | |
686 | fp = list_entry(p, struct audioformat, list); | |
687 | if (!hw_check_valid_format(subs, params, fp)) | |
688 | continue; | |
689 | if (changed++) { | |
690 | if (rmin > fp->rate_min) | |
691 | rmin = fp->rate_min; | |
692 | if (rmax < fp->rate_max) | |
693 | rmax = fp->rate_max; | |
694 | } else { | |
695 | rmin = fp->rate_min; | |
696 | rmax = fp->rate_max; | |
697 | } | |
698 | } | |
699 | ||
700 | if (!changed) { | |
701 | hwc_debug(" --> get empty\n"); | |
702 | it->empty = 1; | |
703 | return -EINVAL; | |
704 | } | |
705 | ||
706 | changed = 0; | |
707 | if (it->min < rmin) { | |
708 | it->min = rmin; | |
709 | it->openmin = 0; | |
710 | changed = 1; | |
711 | } | |
712 | if (it->max > rmax) { | |
713 | it->max = rmax; | |
714 | it->openmax = 0; | |
715 | changed = 1; | |
716 | } | |
717 | if (snd_interval_checkempty(it)) { | |
718 | it->empty = 1; | |
719 | return -EINVAL; | |
720 | } | |
721 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
722 | return changed; | |
723 | } | |
724 | ||
725 | ||
726 | static int hw_rule_channels(struct snd_pcm_hw_params *params, | |
727 | struct snd_pcm_hw_rule *rule) | |
728 | { | |
729 | struct snd_usb_substream *subs = rule->private; | |
730 | struct list_head *p; | |
731 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
732 | unsigned int rmin, rmax; | |
733 | int changed; | |
734 | ||
735 | hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); | |
736 | changed = 0; | |
737 | rmin = rmax = 0; | |
738 | list_for_each(p, &subs->fmt_list) { | |
739 | struct audioformat *fp; | |
740 | fp = list_entry(p, struct audioformat, list); | |
741 | if (!hw_check_valid_format(subs, params, fp)) | |
742 | continue; | |
743 | if (changed++) { | |
744 | if (rmin > fp->channels) | |
745 | rmin = fp->channels; | |
746 | if (rmax < fp->channels) | |
747 | rmax = fp->channels; | |
748 | } else { | |
749 | rmin = fp->channels; | |
750 | rmax = fp->channels; | |
751 | } | |
752 | } | |
753 | ||
754 | if (!changed) { | |
755 | hwc_debug(" --> get empty\n"); | |
756 | it->empty = 1; | |
757 | return -EINVAL; | |
758 | } | |
759 | ||
760 | changed = 0; | |
761 | if (it->min < rmin) { | |
762 | it->min = rmin; | |
763 | it->openmin = 0; | |
764 | changed = 1; | |
765 | } | |
766 | if (it->max > rmax) { | |
767 | it->max = rmax; | |
768 | it->openmax = 0; | |
769 | changed = 1; | |
770 | } | |
771 | if (snd_interval_checkempty(it)) { | |
772 | it->empty = 1; | |
773 | return -EINVAL; | |
774 | } | |
775 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
776 | return changed; | |
777 | } | |
778 | ||
779 | static int hw_rule_format(struct snd_pcm_hw_params *params, | |
780 | struct snd_pcm_hw_rule *rule) | |
781 | { | |
782 | struct snd_usb_substream *subs = rule->private; | |
783 | struct list_head *p; | |
784 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
785 | u64 fbits; | |
786 | u32 oldbits[2]; | |
787 | int changed; | |
788 | ||
789 | hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); | |
790 | fbits = 0; | |
791 | list_for_each(p, &subs->fmt_list) { | |
792 | struct audioformat *fp; | |
793 | fp = list_entry(p, struct audioformat, list); | |
794 | if (!hw_check_valid_format(subs, params, fp)) | |
795 | continue; | |
015eb0b0 | 796 | fbits |= fp->formats; |
e5779998 DM |
797 | } |
798 | ||
799 | oldbits[0] = fmt->bits[0]; | |
800 | oldbits[1] = fmt->bits[1]; | |
801 | fmt->bits[0] &= (u32)fbits; | |
802 | fmt->bits[1] &= (u32)(fbits >> 32); | |
803 | if (!fmt->bits[0] && !fmt->bits[1]) { | |
804 | hwc_debug(" --> get empty\n"); | |
805 | return -EINVAL; | |
806 | } | |
807 | changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); | |
808 | hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); | |
809 | return changed; | |
810 | } | |
811 | ||
812 | static int hw_rule_period_time(struct snd_pcm_hw_params *params, | |
813 | struct snd_pcm_hw_rule *rule) | |
814 | { | |
815 | struct snd_usb_substream *subs = rule->private; | |
816 | struct audioformat *fp; | |
817 | struct snd_interval *it; | |
818 | unsigned char min_datainterval; | |
819 | unsigned int pmin; | |
820 | int changed; | |
821 | ||
822 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
823 | hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); | |
824 | min_datainterval = 0xff; | |
825 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
826 | if (!hw_check_valid_format(subs, params, fp)) | |
827 | continue; | |
828 | min_datainterval = min(min_datainterval, fp->datainterval); | |
829 | } | |
830 | if (min_datainterval == 0xff) { | |
a7ce2e0d | 831 | hwc_debug(" --> get empty\n"); |
e5779998 DM |
832 | it->empty = 1; |
833 | return -EINVAL; | |
834 | } | |
835 | pmin = 125 * (1 << min_datainterval); | |
836 | changed = 0; | |
837 | if (it->min < pmin) { | |
838 | it->min = pmin; | |
839 | it->openmin = 0; | |
840 | changed = 1; | |
841 | } | |
842 | if (snd_interval_checkempty(it)) { | |
843 | it->empty = 1; | |
844 | return -EINVAL; | |
845 | } | |
846 | hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed); | |
847 | return changed; | |
848 | } | |
849 | ||
850 | /* | |
851 | * If the device supports unusual bit rates, does the request meet these? | |
852 | */ | |
853 | static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, | |
854 | struct snd_usb_substream *subs) | |
855 | { | |
856 | struct audioformat *fp; | |
0717d0f5 | 857 | int *rate_list; |
e5779998 DM |
858 | int count = 0, needs_knot = 0; |
859 | int err; | |
860 | ||
5cd5d7c4 CL |
861 | kfree(subs->rate_list.list); |
862 | subs->rate_list.list = NULL; | |
863 | ||
e5779998 DM |
864 | list_for_each_entry(fp, &subs->fmt_list, list) { |
865 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) | |
866 | return 0; | |
867 | count += fp->nr_rates; | |
868 | if (fp->rates & SNDRV_PCM_RATE_KNOT) | |
869 | needs_knot = 1; | |
870 | } | |
871 | if (!needs_knot) | |
872 | return 0; | |
873 | ||
0717d0f5 TI |
874 | subs->rate_list.list = rate_list = |
875 | kmalloc(sizeof(int) * count, GFP_KERNEL); | |
8a8d56b2 JJ |
876 | if (!subs->rate_list.list) |
877 | return -ENOMEM; | |
878 | subs->rate_list.count = count; | |
e5779998 DM |
879 | subs->rate_list.mask = 0; |
880 | count = 0; | |
881 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
882 | int i; | |
883 | for (i = 0; i < fp->nr_rates; i++) | |
0717d0f5 | 884 | rate_list[count++] = fp->rate_table[i]; |
e5779998 DM |
885 | } |
886 | err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
887 | &subs->rate_list); | |
888 | if (err < 0) | |
889 | return err; | |
890 | ||
891 | return 0; | |
892 | } | |
893 | ||
894 | ||
895 | /* | |
896 | * set up the runtime hardware information. | |
897 | */ | |
898 | ||
899 | static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) | |
900 | { | |
901 | struct list_head *p; | |
902 | unsigned int pt, ptmin; | |
903 | int param_period_time_if_needed; | |
904 | int err; | |
905 | ||
906 | runtime->hw.formats = subs->formats; | |
907 | ||
908 | runtime->hw.rate_min = 0x7fffffff; | |
909 | runtime->hw.rate_max = 0; | |
910 | runtime->hw.channels_min = 256; | |
911 | runtime->hw.channels_max = 0; | |
912 | runtime->hw.rates = 0; | |
913 | ptmin = UINT_MAX; | |
914 | /* check min/max rates and channels */ | |
915 | list_for_each(p, &subs->fmt_list) { | |
916 | struct audioformat *fp; | |
917 | fp = list_entry(p, struct audioformat, list); | |
918 | runtime->hw.rates |= fp->rates; | |
919 | if (runtime->hw.rate_min > fp->rate_min) | |
920 | runtime->hw.rate_min = fp->rate_min; | |
921 | if (runtime->hw.rate_max < fp->rate_max) | |
922 | runtime->hw.rate_max = fp->rate_max; | |
923 | if (runtime->hw.channels_min > fp->channels) | |
924 | runtime->hw.channels_min = fp->channels; | |
925 | if (runtime->hw.channels_max < fp->channels) | |
926 | runtime->hw.channels_max = fp->channels; | |
927 | if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) { | |
928 | /* FIXME: there might be more than one audio formats... */ | |
929 | runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = | |
930 | fp->frame_size; | |
931 | } | |
932 | pt = 125 * (1 << fp->datainterval); | |
933 | ptmin = min(ptmin, pt); | |
934 | } | |
88a8516a ON |
935 | err = snd_usb_autoresume(subs->stream->chip); |
936 | if (err < 0) | |
937 | return err; | |
e5779998 DM |
938 | |
939 | param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME; | |
978520b7 | 940 | if (subs->speed == USB_SPEED_FULL) |
e5779998 DM |
941 | /* full speed devices have fixed data packet interval */ |
942 | ptmin = 1000; | |
943 | if (ptmin == 1000) | |
944 | /* if period time doesn't go below 1 ms, no rules needed */ | |
945 | param_period_time_if_needed = -1; | |
946 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
947 | ptmin, UINT_MAX); | |
948 | ||
949 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
950 | hw_rule_rate, subs, | |
951 | SNDRV_PCM_HW_PARAM_FORMAT, | |
952 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
953 | param_period_time_if_needed, | |
954 | -1)) < 0) | |
88a8516a | 955 | goto rep_err; |
e5779998 DM |
956 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, |
957 | hw_rule_channels, subs, | |
958 | SNDRV_PCM_HW_PARAM_FORMAT, | |
959 | SNDRV_PCM_HW_PARAM_RATE, | |
960 | param_period_time_if_needed, | |
961 | -1)) < 0) | |
88a8516a | 962 | goto rep_err; |
e5779998 DM |
963 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, |
964 | hw_rule_format, subs, | |
965 | SNDRV_PCM_HW_PARAM_RATE, | |
966 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
967 | param_period_time_if_needed, | |
968 | -1)) < 0) | |
88a8516a | 969 | goto rep_err; |
e5779998 DM |
970 | if (param_period_time_if_needed >= 0) { |
971 | err = snd_pcm_hw_rule_add(runtime, 0, | |
972 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
973 | hw_rule_period_time, subs, | |
974 | SNDRV_PCM_HW_PARAM_FORMAT, | |
975 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
976 | SNDRV_PCM_HW_PARAM_RATE, | |
977 | -1); | |
978 | if (err < 0) | |
88a8516a | 979 | goto rep_err; |
e5779998 DM |
980 | } |
981 | if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0) | |
88a8516a | 982 | goto rep_err; |
e5779998 | 983 | return 0; |
88a8516a ON |
984 | |
985 | rep_err: | |
986 | snd_usb_autosuspend(subs->stream->chip); | |
987 | return err; | |
e5779998 DM |
988 | } |
989 | ||
990 | static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction) | |
991 | { | |
992 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); | |
993 | struct snd_pcm_runtime *runtime = substream->runtime; | |
994 | struct snd_usb_substream *subs = &as->substream[direction]; | |
995 | ||
996 | subs->interface = -1; | |
e11b4e0e | 997 | subs->altset_idx = 0; |
e5779998 DM |
998 | runtime->hw = snd_usb_hardware; |
999 | runtime->private_data = subs; | |
1000 | subs->pcm_substream = substream; | |
88a8516a | 1001 | /* runtime PM is also done there */ |
e5779998 DM |
1002 | return setup_hw_info(runtime, subs); |
1003 | } | |
1004 | ||
1005 | static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction) | |
1006 | { | |
1007 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); | |
1008 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1009 | ||
a9bb3626 | 1010 | stop_endpoints(subs, false); |
68e67f40 DM |
1011 | |
1012 | if (!as->chip->shutdown && subs->interface >= 0) { | |
1013 | usb_set_interface(subs->dev, subs->interface, 0); | |
1014 | subs->interface = -1; | |
1015 | } | |
1016 | ||
e5779998 | 1017 | subs->pcm_substream = NULL; |
88a8516a | 1018 | snd_usb_autosuspend(subs->stream->chip); |
edcd3633 | 1019 | |
68e67f40 | 1020 | return 0; |
edcd3633 DM |
1021 | } |
1022 | ||
1023 | /* Since a URB can handle only a single linear buffer, we must use double | |
1024 | * buffering when the data to be transferred overflows the buffer boundary. | |
1025 | * To avoid inconsistencies when updating hwptr_done, we use double buffering | |
1026 | * for all URBs. | |
1027 | */ | |
1028 | static void retire_capture_urb(struct snd_usb_substream *subs, | |
1029 | struct urb *urb) | |
1030 | { | |
1031 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1032 | unsigned int stride, frames, bytes, oldptr; | |
1033 | int i, period_elapsed = 0; | |
1034 | unsigned long flags; | |
1035 | unsigned char *cp; | |
1036 | ||
1037 | stride = runtime->frame_bits >> 3; | |
1038 | ||
1039 | for (i = 0; i < urb->number_of_packets; i++) { | |
1040 | cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
1041 | if (urb->iso_frame_desc[i].status && printk_ratelimit()) { | |
1042 | snd_printdd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status); | |
1043 | // continue; | |
1044 | } | |
1045 | bytes = urb->iso_frame_desc[i].actual_length; | |
1046 | frames = bytes / stride; | |
1047 | if (!subs->txfr_quirk) | |
1048 | bytes = frames * stride; | |
1049 | if (bytes % (runtime->sample_bits >> 3) != 0) { | |
1050 | #ifdef CONFIG_SND_DEBUG_VERBOSE | |
1051 | int oldbytes = bytes; | |
1052 | #endif | |
1053 | bytes = frames * stride; | |
1054 | snd_printdd(KERN_ERR "Corrected urb data len. %d->%d\n", | |
1055 | oldbytes, bytes); | |
1056 | } | |
1057 | /* update the current pointer */ | |
1058 | spin_lock_irqsave(&subs->lock, flags); | |
1059 | oldptr = subs->hwptr_done; | |
1060 | subs->hwptr_done += bytes; | |
1061 | if (subs->hwptr_done >= runtime->buffer_size * stride) | |
1062 | subs->hwptr_done -= runtime->buffer_size * stride; | |
1063 | frames = (bytes + (oldptr % stride)) / stride; | |
1064 | subs->transfer_done += frames; | |
1065 | if (subs->transfer_done >= runtime->period_size) { | |
1066 | subs->transfer_done -= runtime->period_size; | |
1067 | period_elapsed = 1; | |
1068 | } | |
1069 | spin_unlock_irqrestore(&subs->lock, flags); | |
1070 | /* copy a data chunk */ | |
1071 | if (oldptr + bytes > runtime->buffer_size * stride) { | |
1072 | unsigned int bytes1 = | |
1073 | runtime->buffer_size * stride - oldptr; | |
1074 | memcpy(runtime->dma_area + oldptr, cp, bytes1); | |
1075 | memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1); | |
1076 | } else { | |
1077 | memcpy(runtime->dma_area + oldptr, cp, bytes); | |
1078 | } | |
1079 | } | |
1080 | ||
1081 | if (period_elapsed) | |
1082 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1083 | } | |
1084 | ||
1085 | static void prepare_playback_urb(struct snd_usb_substream *subs, | |
1086 | struct urb *urb) | |
1087 | { | |
1088 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
245baf98 | 1089 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
edcd3633 DM |
1090 | struct snd_urb_ctx *ctx = urb->context; |
1091 | unsigned int counts, frames, bytes; | |
1092 | int i, stride, period_elapsed = 0; | |
1093 | unsigned long flags; | |
1094 | ||
1095 | stride = runtime->frame_bits >> 3; | |
1096 | ||
1097 | frames = 0; | |
1098 | urb->number_of_packets = 0; | |
1099 | spin_lock_irqsave(&subs->lock, flags); | |
1100 | for (i = 0; i < ctx->packets; i++) { | |
245baf98 DM |
1101 | if (ctx->packet_size[i]) |
1102 | counts = ctx->packet_size[i]; | |
1103 | else | |
1104 | counts = snd_usb_endpoint_next_packet_size(ep); | |
1105 | ||
edcd3633 DM |
1106 | /* set up descriptor */ |
1107 | urb->iso_frame_desc[i].offset = frames * stride; | |
1108 | urb->iso_frame_desc[i].length = counts * stride; | |
1109 | frames += counts; | |
1110 | urb->number_of_packets++; | |
1111 | subs->transfer_done += counts; | |
1112 | if (subs->transfer_done >= runtime->period_size) { | |
1113 | subs->transfer_done -= runtime->period_size; | |
1114 | period_elapsed = 1; | |
1115 | if (subs->fmt_type == UAC_FORMAT_TYPE_II) { | |
1116 | if (subs->transfer_done > 0) { | |
1117 | /* FIXME: fill-max mode is not | |
1118 | * supported yet */ | |
1119 | frames -= subs->transfer_done; | |
1120 | counts -= subs->transfer_done; | |
1121 | urb->iso_frame_desc[i].length = | |
1122 | counts * stride; | |
1123 | subs->transfer_done = 0; | |
1124 | } | |
1125 | i++; | |
1126 | if (i < ctx->packets) { | |
1127 | /* add a transfer delimiter */ | |
1128 | urb->iso_frame_desc[i].offset = | |
1129 | frames * stride; | |
1130 | urb->iso_frame_desc[i].length = 0; | |
1131 | urb->number_of_packets++; | |
1132 | } | |
1133 | break; | |
1134 | } | |
1135 | } | |
1136 | if (period_elapsed && | |
1137 | !snd_usb_endpoint_implict_feedback_sink(subs->data_endpoint)) /* finish at the period boundary */ | |
1138 | break; | |
1139 | } | |
1140 | bytes = frames * stride; | |
1141 | if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { | |
1142 | /* err, the transferred area goes over buffer boundary. */ | |
1143 | unsigned int bytes1 = | |
1144 | runtime->buffer_size * stride - subs->hwptr_done; | |
1145 | memcpy(urb->transfer_buffer, | |
1146 | runtime->dma_area + subs->hwptr_done, bytes1); | |
1147 | memcpy(urb->transfer_buffer + bytes1, | |
1148 | runtime->dma_area, bytes - bytes1); | |
1149 | } else { | |
1150 | memcpy(urb->transfer_buffer, | |
1151 | runtime->dma_area + subs->hwptr_done, bytes); | |
1152 | } | |
1153 | subs->hwptr_done += bytes; | |
1154 | if (subs->hwptr_done >= runtime->buffer_size * stride) | |
1155 | subs->hwptr_done -= runtime->buffer_size * stride; | |
fbcfbf5f DM |
1156 | |
1157 | /* update delay with exact number of samples queued */ | |
1158 | runtime->delay = subs->last_delay; | |
edcd3633 | 1159 | runtime->delay += frames; |
fbcfbf5f DM |
1160 | subs->last_delay = runtime->delay; |
1161 | ||
1162 | /* realign last_frame_number */ | |
1163 | subs->last_frame_number = usb_get_current_frame_number(subs->dev); | |
1164 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1165 | ||
edcd3633 DM |
1166 | spin_unlock_irqrestore(&subs->lock, flags); |
1167 | urb->transfer_buffer_length = bytes; | |
1168 | if (period_elapsed) | |
1169 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1170 | } | |
1171 | ||
1172 | /* | |
1173 | * process after playback data complete | |
1174 | * - decrease the delay count again | |
1175 | */ | |
1176 | static void retire_playback_urb(struct snd_usb_substream *subs, | |
1177 | struct urb *urb) | |
1178 | { | |
1179 | unsigned long flags; | |
1180 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1181 | int stride = runtime->frame_bits >> 3; | |
1182 | int processed = urb->transfer_buffer_length / stride; | |
fbcfbf5f | 1183 | int est_delay; |
edcd3633 | 1184 | |
1213a205 TI |
1185 | /* ignore the delay accounting when procssed=0 is given, i.e. |
1186 | * silent payloads are procssed before handling the actual data | |
1187 | */ | |
1188 | if (!processed) | |
1189 | return; | |
1190 | ||
edcd3633 | 1191 | spin_lock_irqsave(&subs->lock, flags); |
fbcfbf5f DM |
1192 | est_delay = snd_usb_pcm_delay(subs, runtime->rate); |
1193 | /* update delay with exact number of samples played */ | |
1194 | if (processed > subs->last_delay) | |
1195 | subs->last_delay = 0; | |
edcd3633 | 1196 | else |
fbcfbf5f DM |
1197 | subs->last_delay -= processed; |
1198 | runtime->delay = subs->last_delay; | |
1199 | ||
1200 | /* | |
1201 | * Report when delay estimate is off by more than 2ms. | |
1202 | * The error should be lower than 2ms since the estimate relies | |
1203 | * on two reads of a counter updated every ms. | |
1204 | */ | |
1205 | if (abs(est_delay - subs->last_delay) * 1000 > runtime->rate * 2) | |
1206 | snd_printk(KERN_DEBUG "delay: estimated %d, actual %d\n", | |
1207 | est_delay, subs->last_delay); | |
1208 | ||
edcd3633 | 1209 | spin_unlock_irqrestore(&subs->lock, flags); |
e5779998 DM |
1210 | } |
1211 | ||
1212 | static int snd_usb_playback_open(struct snd_pcm_substream *substream) | |
1213 | { | |
1214 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK); | |
1215 | } | |
1216 | ||
1217 | static int snd_usb_playback_close(struct snd_pcm_substream *substream) | |
1218 | { | |
1219 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK); | |
1220 | } | |
1221 | ||
1222 | static int snd_usb_capture_open(struct snd_pcm_substream *substream) | |
1223 | { | |
1224 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE); | |
1225 | } | |
1226 | ||
1227 | static int snd_usb_capture_close(struct snd_pcm_substream *substream) | |
1228 | { | |
1229 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE); | |
1230 | } | |
1231 | ||
edcd3633 DM |
1232 | static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, |
1233 | int cmd) | |
1234 | { | |
1235 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1236 | ||
1237 | switch (cmd) { | |
1238 | case SNDRV_PCM_TRIGGER_START: | |
1239 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1240 | subs->data_endpoint->prepare_data_urb = prepare_playback_urb; | |
1241 | subs->data_endpoint->retire_data_urb = retire_playback_urb; | |
97f8d3b6 | 1242 | subs->running = 1; |
edcd3633 DM |
1243 | return 0; |
1244 | case SNDRV_PCM_TRIGGER_STOP: | |
a9bb3626 | 1245 | stop_endpoints(subs, false); |
97f8d3b6 | 1246 | subs->running = 0; |
edcd3633 DM |
1247 | return 0; |
1248 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1249 | subs->data_endpoint->prepare_data_urb = NULL; | |
1250 | subs->data_endpoint->retire_data_urb = NULL; | |
97f8d3b6 | 1251 | subs->running = 0; |
edcd3633 DM |
1252 | return 0; |
1253 | } | |
1254 | ||
1255 | return -EINVAL; | |
1256 | } | |
1257 | ||
afe25967 DM |
1258 | static int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, |
1259 | int cmd) | |
edcd3633 DM |
1260 | { |
1261 | int err; | |
1262 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1263 | ||
1264 | switch (cmd) { | |
1265 | case SNDRV_PCM_TRIGGER_START: | |
a9bb3626 | 1266 | err = start_endpoints(subs, false); |
edcd3633 DM |
1267 | if (err < 0) |
1268 | return err; | |
1269 | ||
1270 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1271 | subs->running = 1; |
edcd3633 DM |
1272 | return 0; |
1273 | case SNDRV_PCM_TRIGGER_STOP: | |
a9bb3626 | 1274 | stop_endpoints(subs, false); |
97f8d3b6 | 1275 | subs->running = 0; |
edcd3633 DM |
1276 | return 0; |
1277 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1278 | subs->data_endpoint->retire_data_urb = NULL; | |
97f8d3b6 | 1279 | subs->running = 0; |
edcd3633 DM |
1280 | return 0; |
1281 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1282 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1283 | subs->running = 1; |
edcd3633 DM |
1284 | return 0; |
1285 | } | |
1286 | ||
1287 | return -EINVAL; | |
1288 | } | |
1289 | ||
e5779998 DM |
1290 | static struct snd_pcm_ops snd_usb_playback_ops = { |
1291 | .open = snd_usb_playback_open, | |
1292 | .close = snd_usb_playback_close, | |
1293 | .ioctl = snd_pcm_lib_ioctl, | |
1294 | .hw_params = snd_usb_hw_params, | |
1295 | .hw_free = snd_usb_hw_free, | |
1296 | .prepare = snd_usb_pcm_prepare, | |
1297 | .trigger = snd_usb_substream_playback_trigger, | |
1298 | .pointer = snd_usb_pcm_pointer, | |
1299 | .page = snd_pcm_lib_get_vmalloc_page, | |
1300 | .mmap = snd_pcm_lib_mmap_vmalloc, | |
1301 | }; | |
1302 | ||
1303 | static struct snd_pcm_ops snd_usb_capture_ops = { | |
1304 | .open = snd_usb_capture_open, | |
1305 | .close = snd_usb_capture_close, | |
1306 | .ioctl = snd_pcm_lib_ioctl, | |
1307 | .hw_params = snd_usb_hw_params, | |
1308 | .hw_free = snd_usb_hw_free, | |
1309 | .prepare = snd_usb_pcm_prepare, | |
1310 | .trigger = snd_usb_substream_capture_trigger, | |
1311 | .pointer = snd_usb_pcm_pointer, | |
1312 | .page = snd_pcm_lib_get_vmalloc_page, | |
1313 | .mmap = snd_pcm_lib_mmap_vmalloc, | |
1314 | }; | |
1315 | ||
1316 | void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream) | |
1317 | { | |
1318 | snd_pcm_set_ops(pcm, stream, | |
1319 | stream == SNDRV_PCM_STREAM_PLAYBACK ? | |
1320 | &snd_usb_playback_ops : &snd_usb_capture_ops); | |
1321 | } |