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> |
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; | |
47ab1545 | 83 | if (atomic_read(&subs->stream->chip->shutdown)) |
978520b7 | 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) { |
0ba41d91 TI |
169 | usb_audio_err(chip, "%d:%d: cannot set enable PITCH\n", |
170 | iface, ep); | |
767d75ad DM |
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) { |
0ba41d91 TI |
190 | usb_audio_err(chip, "%d:%d: cannot set enable PITCH (v2)\n", |
191 | iface, fmt->altsetting); | |
92c25611 DM |
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 | { | |
92c25611 DM |
205 | /* if endpoint doesn't have pitch control, bail out */ |
206 | if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) | |
207 | return 0; | |
208 | ||
8f898e92 | 209 | switch (fmt->protocol) { |
767d75ad | 210 | case UAC_VERSION_1: |
a2acad82 | 211 | default: |
767d75ad DM |
212 | return init_pitch_v1(chip, iface, alts, fmt); |
213 | ||
214 | case UAC_VERSION_2: | |
92c25611 | 215 | return init_pitch_v2(chip, iface, alts, fmt); |
767d75ad | 216 | } |
767d75ad DM |
217 | } |
218 | ||
a9bb3626 | 219 | static int start_endpoints(struct snd_usb_substream *subs, bool can_sleep) |
edcd3633 DM |
220 | { |
221 | int err; | |
222 | ||
223 | if (!subs->data_endpoint) | |
224 | return -EINVAL; | |
225 | ||
226 | if (!test_and_set_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) { | |
227 | struct snd_usb_endpoint *ep = subs->data_endpoint; | |
228 | ||
0ba41d91 | 229 | dev_dbg(&subs->dev->dev, "Starting data EP @%p\n", ep); |
edcd3633 DM |
230 | |
231 | ep->data_subs = subs; | |
015618b9 | 232 | err = snd_usb_endpoint_start(ep, can_sleep); |
edcd3633 DM |
233 | if (err < 0) { |
234 | clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags); | |
235 | return err; | |
236 | } | |
237 | } | |
238 | ||
239 | if (subs->sync_endpoint && | |
240 | !test_and_set_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) { | |
241 | struct snd_usb_endpoint *ep = subs->sync_endpoint; | |
242 | ||
2e4a263c | 243 | if (subs->data_endpoint->iface != subs->sync_endpoint->iface || |
df23a246 | 244 | subs->data_endpoint->altsetting != subs->sync_endpoint->altsetting) { |
2e4a263c DM |
245 | err = usb_set_interface(subs->dev, |
246 | subs->sync_endpoint->iface, | |
df23a246 | 247 | subs->sync_endpoint->altsetting); |
2e4a263c | 248 | if (err < 0) { |
06613f54 | 249 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); |
0ba41d91 TI |
250 | dev_err(&subs->dev->dev, |
251 | "%d:%d: cannot set interface (%d)\n", | |
2e4a263c | 252 | subs->sync_endpoint->iface, |
df23a246 | 253 | subs->sync_endpoint->altsetting, err); |
2e4a263c DM |
254 | return -EIO; |
255 | } | |
256 | } | |
257 | ||
0ba41d91 | 258 | dev_dbg(&subs->dev->dev, "Starting sync EP @%p\n", ep); |
edcd3633 DM |
259 | |
260 | ep->sync_slave = subs->data_endpoint; | |
015618b9 | 261 | err = snd_usb_endpoint_start(ep, can_sleep); |
edcd3633 DM |
262 | if (err < 0) { |
263 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); | |
264 | return err; | |
265 | } | |
266 | } | |
267 | ||
268 | return 0; | |
269 | } | |
270 | ||
a9bb3626 | 271 | static void stop_endpoints(struct snd_usb_substream *subs, bool wait) |
edcd3633 DM |
272 | { |
273 | if (test_and_clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) | |
b2eb950d | 274 | snd_usb_endpoint_stop(subs->sync_endpoint); |
edcd3633 DM |
275 | |
276 | if (test_and_clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) | |
b2eb950d TI |
277 | snd_usb_endpoint_stop(subs->data_endpoint); |
278 | ||
279 | if (wait) { | |
280 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); | |
281 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
282 | } | |
edcd3633 DM |
283 | } |
284 | ||
ba7c2be1 CL |
285 | static int search_roland_implicit_fb(struct usb_device *dev, int ifnum, |
286 | unsigned int altsetting, | |
287 | struct usb_host_interface **alts, | |
288 | unsigned int *ep) | |
289 | { | |
290 | struct usb_interface *iface; | |
291 | struct usb_interface_descriptor *altsd; | |
292 | struct usb_endpoint_descriptor *epd; | |
293 | ||
294 | iface = usb_ifnum_to_if(dev, ifnum); | |
295 | if (!iface || iface->num_altsetting < altsetting + 1) | |
296 | return -ENOENT; | |
297 | *alts = &iface->altsetting[altsetting]; | |
298 | altsd = get_iface_desc(*alts); | |
299 | if (altsd->bAlternateSetting != altsetting || | |
300 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC || | |
301 | (altsd->bInterfaceSubClass != 2 && | |
302 | altsd->bInterfaceProtocol != 2 ) || | |
303 | altsd->bNumEndpoints < 1) | |
304 | return -ENOENT; | |
305 | epd = get_endpoint(*alts, 0); | |
306 | if (!usb_endpoint_is_isoc_in(epd) || | |
307 | (epd->bmAttributes & USB_ENDPOINT_USAGE_MASK) != | |
308 | USB_ENDPOINT_USAGE_IMPLICIT_FB) | |
309 | return -ENOENT; | |
310 | *ep = epd->bEndpointAddress; | |
311 | return 0; | |
312 | } | |
313 | ||
a60945fd EZ |
314 | static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs, |
315 | struct usb_device *dev, | |
316 | struct usb_interface_descriptor *altsd, | |
317 | unsigned int attr) | |
e5779998 | 318 | { |
a60945fd | 319 | struct usb_host_interface *alts; |
e5779998 | 320 | struct usb_interface *iface; |
a60945fd | 321 | unsigned int ep; |
c75a8a7a | 322 | |
914273c7 EZ |
323 | /* Implicit feedback sync EPs consumers are always playback EPs */ |
324 | if (subs->direction != SNDRV_PCM_STREAM_PLAYBACK) | |
325 | return 0; | |
326 | ||
c75a8a7a | 327 | switch (subs->stream->chip->usb_id) { |
ca10a7eb | 328 | case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ |
e9a25e04 | 329 | case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ |
914273c7 EZ |
330 | ep = 0x81; |
331 | iface = usb_ifnum_to_if(dev, 3); | |
ca10a7eb | 332 | |
914273c7 EZ |
333 | if (!iface || iface->num_altsetting == 0) |
334 | return -EINVAL; | |
ca10a7eb | 335 | |
914273c7 EZ |
336 | alts = &iface->altsetting[1]; |
337 | goto add_sync_ep; | |
ca10a7eb | 338 | break; |
c75a8a7a DM |
339 | case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */ |
340 | case USB_ID(0x0763, 0x2081): | |
914273c7 EZ |
341 | ep = 0x81; |
342 | iface = usb_ifnum_to_if(dev, 2); | |
c75a8a7a | 343 | |
914273c7 EZ |
344 | if (!iface || iface->num_altsetting == 0) |
345 | return -EINVAL; | |
c75a8a7a | 346 | |
914273c7 EZ |
347 | alts = &iface->altsetting[1]; |
348 | goto add_sync_ep; | |
c75a8a7a | 349 | } |
914273c7 | 350 | if (attr == USB_ENDPOINT_SYNC_ASYNC && |
ba7c2be1 CL |
351 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && |
352 | altsd->bInterfaceProtocol == 2 && | |
353 | altsd->bNumEndpoints == 1 && | |
354 | USB_ID_VENDOR(subs->stream->chip->usb_id) == 0x0582 /* Roland */ && | |
355 | search_roland_implicit_fb(dev, altsd->bInterfaceNumber + 1, | |
356 | altsd->bAlternateSetting, | |
357 | &alts, &ep) >= 0) { | |
ba7c2be1 CL |
358 | goto add_sync_ep; |
359 | } | |
edcd3633 | 360 | |
a60945fd EZ |
361 | /* No quirk */ |
362 | return 0; | |
363 | ||
364 | add_sync_ep: | |
365 | subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, | |
366 | alts, ep, !subs->direction, | |
88abb8ef | 367 | SND_USB_ENDPOINT_TYPE_DATA); |
a60945fd EZ |
368 | if (!subs->sync_endpoint) |
369 | return -EINVAL; | |
370 | ||
371 | subs->data_endpoint->sync_master = subs->sync_endpoint; | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static int set_sync_endpoint(struct snd_usb_substream *subs, | |
377 | struct audioformat *fmt, | |
378 | struct usb_device *dev, | |
379 | struct usb_host_interface *alts, | |
380 | struct usb_interface_descriptor *altsd) | |
381 | { | |
382 | int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; | |
383 | unsigned int ep, attr; | |
95fec883 | 384 | bool implicit_fb; |
a60945fd EZ |
385 | int err; |
386 | ||
387 | /* we need a sync pipe in async OUT or adaptive IN mode */ | |
388 | /* check the number of EP, since some devices have broken | |
389 | * descriptors which fool us. if it has only one EP, | |
390 | * assume it as adaptive-out or sync-in. | |
391 | */ | |
392 | attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
393 | ||
63018447 PLB |
394 | if ((is_playback && (attr != USB_ENDPOINT_SYNC_ASYNC)) || |
395 | (!is_playback && (attr != USB_ENDPOINT_SYNC_ADAPTIVE))) { | |
396 | ||
397 | /* | |
398 | * In these modes the notion of sync_endpoint is irrelevant. | |
399 | * Reset pointers to avoid using stale data from previously | |
400 | * used settings, e.g. when configuration and endpoints were | |
401 | * changed | |
402 | */ | |
403 | ||
404 | subs->sync_endpoint = NULL; | |
405 | subs->data_endpoint->sync_master = NULL; | |
406 | } | |
407 | ||
a60945fd EZ |
408 | err = set_sync_ep_implicit_fb_quirk(subs, dev, altsd, attr); |
409 | if (err < 0) | |
410 | return err; | |
411 | ||
f34d0650 EZ |
412 | if (altsd->bNumEndpoints < 2) |
413 | return 0; | |
c75a8a7a | 414 | |
395ae54b PLB |
415 | if ((is_playback && (attr == USB_ENDPOINT_SYNC_SYNC || |
416 | attr == USB_ENDPOINT_SYNC_ADAPTIVE)) || | |
f34d0650 EZ |
417 | (!is_playback && attr != USB_ENDPOINT_SYNC_ADAPTIVE)) |
418 | return 0; | |
edcd3633 | 419 | |
395ae54b PLB |
420 | /* |
421 | * In case of illegal SYNC_NONE for OUT endpoint, we keep going to see | |
422 | * if we don't find a sync endpoint, as on M-Audio Transit. In case of | |
423 | * error fall back to SYNC mode and don't create sync endpoint | |
424 | */ | |
425 | ||
f34d0650 EZ |
426 | /* check sync-pipe endpoint */ |
427 | /* ... and check descriptor size before accessing bSynchAddress | |
428 | because there is a version of the SB Audigy 2 NX firmware lacking | |
429 | the audio fields in the endpoint descriptors */ | |
430 | if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC || | |
431 | (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && | |
95fec883 | 432 | get_endpoint(alts, 1)->bSynchAddress != 0)) { |
0ba41d91 TI |
433 | dev_err(&dev->dev, |
434 | "%d:%d : invalid sync pipe. bmAttributes %02x, bLength %d, bSynchAddress %02x\n", | |
435 | fmt->iface, fmt->altsetting, | |
f34d0650 EZ |
436 | get_endpoint(alts, 1)->bmAttributes, |
437 | get_endpoint(alts, 1)->bLength, | |
438 | get_endpoint(alts, 1)->bSynchAddress); | |
395ae54b PLB |
439 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
440 | return 0; | |
f34d0650 EZ |
441 | return -EINVAL; |
442 | } | |
443 | ep = get_endpoint(alts, 1)->bEndpointAddress; | |
95fec883 | 444 | if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
f34d0650 EZ |
445 | ((is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || |
446 | (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { | |
0ba41d91 TI |
447 | dev_err(&dev->dev, |
448 | "%d:%d : invalid sync pipe. is_playback %d, ep %02x, bSynchAddress %02x\n", | |
449 | fmt->iface, fmt->altsetting, | |
f34d0650 | 450 | is_playback, ep, get_endpoint(alts, 0)->bSynchAddress); |
395ae54b PLB |
451 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
452 | return 0; | |
f34d0650 | 453 | return -EINVAL; |
edcd3633 | 454 | } |
e5779998 | 455 | |
f34d0650 EZ |
456 | implicit_fb = (get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_USAGE_MASK) |
457 | == USB_ENDPOINT_USAGE_IMPLICIT_FB; | |
458 | ||
459 | subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, | |
460 | alts, ep, !subs->direction, | |
461 | implicit_fb ? | |
462 | SND_USB_ENDPOINT_TYPE_DATA : | |
463 | SND_USB_ENDPOINT_TYPE_SYNC); | |
395ae54b PLB |
464 | if (!subs->sync_endpoint) { |
465 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) | |
466 | return 0; | |
f34d0650 | 467 | return -EINVAL; |
395ae54b | 468 | } |
f34d0650 EZ |
469 | |
470 | subs->data_endpoint->sync_master = subs->sync_endpoint; | |
471 | ||
71bb64c5 EZ |
472 | return 0; |
473 | } | |
474 | ||
475 | /* | |
476 | * find a matching format and set up the interface | |
477 | */ | |
478 | static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) | |
479 | { | |
480 | struct usb_device *dev = subs->dev; | |
481 | struct usb_host_interface *alts; | |
482 | struct usb_interface_descriptor *altsd; | |
483 | struct usb_interface *iface; | |
484 | int err; | |
485 | ||
486 | iface = usb_ifnum_to_if(dev, fmt->iface); | |
487 | if (WARN_ON(!iface)) | |
488 | return -EINVAL; | |
489 | alts = &iface->altsetting[fmt->altset_idx]; | |
490 | altsd = get_iface_desc(alts); | |
491 | if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting)) | |
492 | return -EINVAL; | |
493 | ||
494 | if (fmt == subs->cur_audiofmt) | |
495 | return 0; | |
496 | ||
497 | /* close the old interface */ | |
498 | if (subs->interface >= 0 && subs->interface != fmt->iface) { | |
499 | err = usb_set_interface(subs->dev, subs->interface, 0); | |
500 | if (err < 0) { | |
0ba41d91 TI |
501 | dev_err(&dev->dev, |
502 | "%d:%d: return to setting 0 failed (%d)\n", | |
503 | fmt->iface, fmt->altsetting, err); | |
71bb64c5 EZ |
504 | return -EIO; |
505 | } | |
506 | subs->interface = -1; | |
507 | subs->altset_idx = 0; | |
508 | } | |
509 | ||
510 | /* set interface */ | |
511 | if (subs->interface != fmt->iface || | |
512 | subs->altset_idx != fmt->altset_idx) { | |
6874daad JK |
513 | |
514 | err = snd_usb_select_mode_quirk(subs, fmt); | |
515 | if (err < 0) | |
516 | return -EIO; | |
517 | ||
71bb64c5 EZ |
518 | err = usb_set_interface(dev, fmt->iface, fmt->altsetting); |
519 | if (err < 0) { | |
0ba41d91 TI |
520 | dev_err(&dev->dev, |
521 | "%d:%d: usb_set_interface failed (%d)\n", | |
522 | fmt->iface, fmt->altsetting, err); | |
71bb64c5 EZ |
523 | return -EIO; |
524 | } | |
0ba41d91 TI |
525 | dev_dbg(&dev->dev, "setting usb interface %d:%d\n", |
526 | fmt->iface, fmt->altsetting); | |
71bb64c5 EZ |
527 | subs->interface = fmt->iface; |
528 | subs->altset_idx = fmt->altset_idx; | |
529 | ||
530 | snd_usb_set_interface_quirk(dev); | |
531 | } | |
532 | ||
533 | subs->data_endpoint = snd_usb_add_endpoint(subs->stream->chip, | |
534 | alts, fmt->endpoint, subs->direction, | |
535 | SND_USB_ENDPOINT_TYPE_DATA); | |
536 | ||
537 | if (!subs->data_endpoint) | |
538 | return -EINVAL; | |
539 | ||
540 | err = set_sync_endpoint(subs, fmt, dev, alts, altsd); | |
541 | if (err < 0) | |
542 | return err; | |
543 | ||
d133f2c2 EZ |
544 | err = snd_usb_init_pitch(subs->stream->chip, fmt->iface, alts, fmt); |
545 | if (err < 0) | |
e5779998 DM |
546 | return err; |
547 | ||
548 | subs->cur_audiofmt = fmt; | |
549 | ||
550 | snd_usb_set_format_quirk(subs, fmt); | |
551 | ||
e5779998 DM |
552 | return 0; |
553 | } | |
554 | ||
0d9741c0 EZ |
555 | /* |
556 | * Return the score of matching two audioformats. | |
557 | * Veto the audioformat if: | |
558 | * - It has no channels for some reason. | |
559 | * - Requested PCM format is not supported. | |
560 | * - Requested sample rate is not supported. | |
561 | */ | |
0ba41d91 TI |
562 | static int match_endpoint_audioformats(struct snd_usb_substream *subs, |
563 | struct audioformat *fp, | |
564 | struct audioformat *match, int rate, | |
565 | snd_pcm_format_t pcm_format) | |
0d9741c0 EZ |
566 | { |
567 | int i; | |
568 | int score = 0; | |
569 | ||
570 | if (fp->channels < 1) { | |
0ba41d91 TI |
571 | dev_dbg(&subs->dev->dev, |
572 | "%s: (fmt @%p) no channels\n", __func__, fp); | |
0d9741c0 EZ |
573 | return 0; |
574 | } | |
575 | ||
74c34ca1 | 576 | if (!(fp->formats & pcm_format_to_bits(pcm_format))) { |
0ba41d91 TI |
577 | dev_dbg(&subs->dev->dev, |
578 | "%s: (fmt @%p) no match for format %d\n", __func__, | |
0d9741c0 EZ |
579 | fp, pcm_format); |
580 | return 0; | |
581 | } | |
582 | ||
583 | for (i = 0; i < fp->nr_rates; i++) { | |
584 | if (fp->rate_table[i] == rate) { | |
585 | score++; | |
586 | break; | |
587 | } | |
588 | } | |
589 | if (!score) { | |
0ba41d91 TI |
590 | dev_dbg(&subs->dev->dev, |
591 | "%s: (fmt @%p) no match for rate %d\n", __func__, | |
0d9741c0 EZ |
592 | fp, rate); |
593 | return 0; | |
594 | } | |
595 | ||
596 | if (fp->channels == match->channels) | |
597 | score++; | |
598 | ||
0ba41d91 TI |
599 | dev_dbg(&subs->dev->dev, |
600 | "%s: (fmt @%p) score %d\n", __func__, fp, score); | |
0d9741c0 EZ |
601 | |
602 | return score; | |
603 | } | |
604 | ||
605 | /* | |
606 | * Configure the sync ep using the rate and pcm format of the data ep. | |
607 | */ | |
608 | static int configure_sync_endpoint(struct snd_usb_substream *subs) | |
609 | { | |
610 | int ret; | |
611 | struct audioformat *fp; | |
612 | struct audioformat *sync_fp = NULL; | |
613 | int cur_score = 0; | |
614 | int sync_period_bytes = subs->period_bytes; | |
615 | struct snd_usb_substream *sync_subs = | |
616 | &subs->stream->substream[subs->direction ^ 1]; | |
617 | ||
31be5425 TI |
618 | if (subs->sync_endpoint->type != SND_USB_ENDPOINT_TYPE_DATA || |
619 | !subs->stream) | |
620 | return snd_usb_endpoint_set_params(subs->sync_endpoint, | |
621 | subs->pcm_format, | |
622 | subs->channels, | |
623 | subs->period_bytes, | |
976b6c06 | 624 | 0, 0, |
31be5425 TI |
625 | subs->cur_rate, |
626 | subs->cur_audiofmt, | |
627 | NULL); | |
628 | ||
0d9741c0 EZ |
629 | /* Try to find the best matching audioformat. */ |
630 | list_for_each_entry(fp, &sync_subs->fmt_list, list) { | |
0ba41d91 TI |
631 | int score = match_endpoint_audioformats(subs, |
632 | fp, subs->cur_audiofmt, | |
0d9741c0 EZ |
633 | subs->cur_rate, subs->pcm_format); |
634 | ||
635 | if (score > cur_score) { | |
636 | sync_fp = fp; | |
637 | cur_score = score; | |
638 | } | |
639 | } | |
640 | ||
641 | if (unlikely(sync_fp == NULL)) { | |
0ba41d91 TI |
642 | dev_err(&subs->dev->dev, |
643 | "%s: no valid audioformat for sync ep %x found\n", | |
0d9741c0 EZ |
644 | __func__, sync_subs->ep_num); |
645 | return -EINVAL; | |
646 | } | |
647 | ||
648 | /* | |
649 | * Recalculate the period bytes if channel number differ between | |
650 | * data and sync ep audioformat. | |
651 | */ | |
652 | if (sync_fp->channels != subs->channels) { | |
653 | sync_period_bytes = (subs->period_bytes / subs->channels) * | |
654 | sync_fp->channels; | |
0ba41d91 TI |
655 | dev_dbg(&subs->dev->dev, |
656 | "%s: adjusted sync ep period bytes (%d -> %d)\n", | |
0d9741c0 EZ |
657 | __func__, subs->period_bytes, sync_period_bytes); |
658 | } | |
659 | ||
660 | ret = snd_usb_endpoint_set_params(subs->sync_endpoint, | |
661 | subs->pcm_format, | |
662 | sync_fp->channels, | |
663 | sync_period_bytes, | |
976b6c06 | 664 | 0, 0, |
0d9741c0 EZ |
665 | subs->cur_rate, |
666 | sync_fp, | |
667 | NULL); | |
668 | ||
669 | return ret; | |
670 | } | |
671 | ||
61a70950 DR |
672 | /* |
673 | * configure endpoint params | |
674 | * | |
675 | * called during initial setup and upon resume | |
676 | */ | |
677 | static int configure_endpoint(struct snd_usb_substream *subs) | |
678 | { | |
679 | int ret; | |
680 | ||
61a70950 | 681 | /* format changed */ |
b0db6063 | 682 | stop_endpoints(subs, true); |
61a70950 DR |
683 | ret = snd_usb_endpoint_set_params(subs->data_endpoint, |
684 | subs->pcm_format, | |
685 | subs->channels, | |
686 | subs->period_bytes, | |
976b6c06 AS |
687 | subs->period_frames, |
688 | subs->buffer_periods, | |
61a70950 DR |
689 | subs->cur_rate, |
690 | subs->cur_audiofmt, | |
691 | subs->sync_endpoint); | |
692 | if (ret < 0) | |
978520b7 | 693 | return ret; |
61a70950 DR |
694 | |
695 | if (subs->sync_endpoint) | |
0d9741c0 EZ |
696 | ret = configure_sync_endpoint(subs); |
697 | ||
61a70950 DR |
698 | return ret; |
699 | } | |
700 | ||
e5779998 DM |
701 | /* |
702 | * hw_params callback | |
703 | * | |
704 | * allocate a buffer and set the given audio format. | |
705 | * | |
706 | * so far we use a physically linear buffer although packetize transfer | |
707 | * doesn't need a continuous area. | |
708 | * if sg buffer is supported on the later version of alsa, we'll follow | |
709 | * that. | |
710 | */ | |
711 | static int snd_usb_hw_params(struct snd_pcm_substream *substream, | |
712 | struct snd_pcm_hw_params *hw_params) | |
713 | { | |
714 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
715 | struct audioformat *fmt; | |
61a70950 | 716 | int ret; |
e5779998 DM |
717 | |
718 | ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, | |
719 | params_buffer_bytes(hw_params)); | |
720 | if (ret < 0) | |
721 | return ret; | |
722 | ||
61a70950 DR |
723 | subs->pcm_format = params_format(hw_params); |
724 | subs->period_bytes = params_period_bytes(hw_params); | |
976b6c06 AS |
725 | subs->period_frames = params_period_size(hw_params); |
726 | subs->buffer_periods = params_periods(hw_params); | |
61a70950 DR |
727 | subs->channels = params_channels(hw_params); |
728 | subs->cur_rate = params_rate(hw_params); | |
729 | ||
730 | fmt = find_format(subs); | |
e5779998 | 731 | if (!fmt) { |
0ba41d91 TI |
732 | dev_dbg(&subs->dev->dev, |
733 | "cannot set format: format = %#x, rate = %d, channels = %d\n", | |
61a70950 | 734 | subs->pcm_format, subs->cur_rate, subs->channels); |
e5779998 DM |
735 | return -EINVAL; |
736 | } | |
737 | ||
47ab1545 TI |
738 | ret = snd_usb_lock_shutdown(subs->stream->chip); |
739 | if (ret < 0) | |
740 | return ret; | |
741 | ret = set_format(subs, fmt); | |
742 | snd_usb_unlock_shutdown(subs->stream->chip); | |
978520b7 | 743 | if (ret < 0) |
e5779998 DM |
744 | return ret; |
745 | ||
61a70950 DR |
746 | subs->interface = fmt->iface; |
747 | subs->altset_idx = fmt->altset_idx; | |
384dc085 | 748 | subs->need_setup_ep = true; |
715a1705 | 749 | |
61a70950 | 750 | return 0; |
e5779998 DM |
751 | } |
752 | ||
753 | /* | |
754 | * hw_free callback | |
755 | * | |
756 | * reset the audio format and release the buffer | |
757 | */ | |
758 | static int snd_usb_hw_free(struct snd_pcm_substream *substream) | |
759 | { | |
760 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
761 | ||
762 | subs->cur_audiofmt = NULL; | |
763 | subs->cur_rate = 0; | |
764 | subs->period_bytes = 0; | |
47ab1545 | 765 | if (!snd_usb_lock_shutdown(subs->stream->chip)) { |
a9bb3626 | 766 | stop_endpoints(subs, true); |
26de5d0a EZ |
767 | snd_usb_endpoint_deactivate(subs->sync_endpoint); |
768 | snd_usb_endpoint_deactivate(subs->data_endpoint); | |
47ab1545 | 769 | snd_usb_unlock_shutdown(subs->stream->chip); |
978520b7 | 770 | } |
e5779998 DM |
771 | return snd_pcm_lib_free_vmalloc_buffer(substream); |
772 | } | |
773 | ||
774 | /* | |
775 | * prepare callback | |
776 | * | |
777 | * only a few subtle things... | |
778 | */ | |
779 | static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) | |
780 | { | |
781 | struct snd_pcm_runtime *runtime = substream->runtime; | |
782 | struct snd_usb_substream *subs = runtime->private_data; | |
61a70950 DR |
783 | struct usb_host_interface *alts; |
784 | struct usb_interface *iface; | |
785 | int ret; | |
e5779998 DM |
786 | |
787 | if (! subs->cur_audiofmt) { | |
0ba41d91 | 788 | dev_err(&subs->dev->dev, "no format is specified!\n"); |
e5779998 DM |
789 | return -ENXIO; |
790 | } | |
791 | ||
47ab1545 TI |
792 | ret = snd_usb_lock_shutdown(subs->stream->chip); |
793 | if (ret < 0) | |
794 | return ret; | |
978520b7 TI |
795 | if (snd_BUG_ON(!subs->data_endpoint)) { |
796 | ret = -EIO; | |
797 | goto unlock; | |
798 | } | |
edcd3633 | 799 | |
f58161ba TI |
800 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); |
801 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
802 | ||
61a70950 DR |
803 | ret = set_format(subs, subs->cur_audiofmt); |
804 | if (ret < 0) | |
978520b7 | 805 | goto unlock; |
61a70950 DR |
806 | |
807 | iface = usb_ifnum_to_if(subs->dev, subs->cur_audiofmt->iface); | |
808 | alts = &iface->altsetting[subs->cur_audiofmt->altset_idx]; | |
809 | ret = snd_usb_init_sample_rate(subs->stream->chip, | |
810 | subs->cur_audiofmt->iface, | |
811 | alts, | |
812 | subs->cur_audiofmt, | |
813 | subs->cur_rate); | |
814 | if (ret < 0) | |
978520b7 | 815 | goto unlock; |
61a70950 | 816 | |
384dc085 TI |
817 | if (subs->need_setup_ep) { |
818 | ret = configure_endpoint(subs); | |
819 | if (ret < 0) | |
978520b7 | 820 | goto unlock; |
384dc085 TI |
821 | subs->need_setup_ep = false; |
822 | } | |
61a70950 | 823 | |
e5779998 | 824 | /* some unit conversions in runtime */ |
edcd3633 DM |
825 | subs->data_endpoint->maxframesize = |
826 | bytes_to_frames(runtime, subs->data_endpoint->maxpacksize); | |
827 | subs->data_endpoint->curframesize = | |
828 | bytes_to_frames(runtime, subs->data_endpoint->curpacksize); | |
e5779998 DM |
829 | |
830 | /* reset the pointer */ | |
831 | subs->hwptr_done = 0; | |
832 | subs->transfer_done = 0; | |
294c4fb8 PLB |
833 | subs->last_delay = 0; |
834 | subs->last_frame_number = 0; | |
e5779998 DM |
835 | runtime->delay = 0; |
836 | ||
edcd3633 DM |
837 | /* for playback, submit the URBs now; otherwise, the first hwptr_done |
838 | * updates for all URBs would happen at the same time when starting */ | |
839 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) | |
a9bb3626 | 840 | ret = start_endpoints(subs, true); |
edcd3633 | 841 | |
978520b7 | 842 | unlock: |
47ab1545 | 843 | snd_usb_unlock_shutdown(subs->stream->chip); |
978520b7 | 844 | return ret; |
e5779998 DM |
845 | } |
846 | ||
847 | static struct snd_pcm_hardware snd_usb_hardware = | |
848 | { | |
849 | .info = SNDRV_PCM_INFO_MMAP | | |
850 | SNDRV_PCM_INFO_MMAP_VALID | | |
851 | SNDRV_PCM_INFO_BATCH | | |
852 | SNDRV_PCM_INFO_INTERLEAVED | | |
853 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
854 | SNDRV_PCM_INFO_PAUSE, | |
855 | .buffer_bytes_max = 1024 * 1024, | |
856 | .period_bytes_min = 64, | |
857 | .period_bytes_max = 512 * 1024, | |
858 | .periods_min = 2, | |
859 | .periods_max = 1024, | |
860 | }; | |
861 | ||
862 | static int hw_check_valid_format(struct snd_usb_substream *subs, | |
863 | struct snd_pcm_hw_params *params, | |
864 | struct audioformat *fp) | |
865 | { | |
866 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
867 | struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
868 | struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
869 | struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
015eb0b0 | 870 | struct snd_mask check_fmts; |
e5779998 DM |
871 | unsigned int ptime; |
872 | ||
873 | /* check the format */ | |
015eb0b0 CL |
874 | snd_mask_none(&check_fmts); |
875 | check_fmts.bits[0] = (u32)fp->formats; | |
876 | check_fmts.bits[1] = (u32)(fp->formats >> 32); | |
877 | snd_mask_intersect(&check_fmts, fmts); | |
878 | if (snd_mask_empty(&check_fmts)) { | |
e5779998 DM |
879 | hwc_debug(" > check: no supported format %d\n", fp->format); |
880 | return 0; | |
881 | } | |
882 | /* check the channels */ | |
883 | if (fp->channels < ct->min || fp->channels > ct->max) { | |
884 | hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); | |
885 | return 0; | |
886 | } | |
887 | /* check the rate is within the range */ | |
888 | if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { | |
889 | hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); | |
890 | return 0; | |
891 | } | |
892 | if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { | |
893 | hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); | |
894 | return 0; | |
895 | } | |
896 | /* check whether the period time is >= the data packet interval */ | |
978520b7 | 897 | if (subs->speed != USB_SPEED_FULL) { |
e5779998 DM |
898 | ptime = 125 * (1 << fp->datainterval); |
899 | if (ptime > pt->max || (ptime == pt->max && pt->openmax)) { | |
900 | hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max); | |
901 | return 0; | |
902 | } | |
903 | } | |
904 | return 1; | |
905 | } | |
906 | ||
907 | static int hw_rule_rate(struct snd_pcm_hw_params *params, | |
908 | struct snd_pcm_hw_rule *rule) | |
909 | { | |
910 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 911 | struct audioformat *fp; |
e5779998 DM |
912 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
913 | unsigned int rmin, rmax; | |
914 | int changed; | |
915 | ||
916 | hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); | |
917 | changed = 0; | |
918 | rmin = rmax = 0; | |
88766f04 | 919 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
920 | if (!hw_check_valid_format(subs, params, fp)) |
921 | continue; | |
922 | if (changed++) { | |
923 | if (rmin > fp->rate_min) | |
924 | rmin = fp->rate_min; | |
925 | if (rmax < fp->rate_max) | |
926 | rmax = fp->rate_max; | |
927 | } else { | |
928 | rmin = fp->rate_min; | |
929 | rmax = fp->rate_max; | |
930 | } | |
931 | } | |
932 | ||
933 | if (!changed) { | |
934 | hwc_debug(" --> get empty\n"); | |
935 | it->empty = 1; | |
936 | return -EINVAL; | |
937 | } | |
938 | ||
939 | changed = 0; | |
940 | if (it->min < rmin) { | |
941 | it->min = rmin; | |
942 | it->openmin = 0; | |
943 | changed = 1; | |
944 | } | |
945 | if (it->max > rmax) { | |
946 | it->max = rmax; | |
947 | it->openmax = 0; | |
948 | changed = 1; | |
949 | } | |
950 | if (snd_interval_checkempty(it)) { | |
951 | it->empty = 1; | |
952 | return -EINVAL; | |
953 | } | |
954 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
955 | return changed; | |
956 | } | |
957 | ||
958 | ||
959 | static int hw_rule_channels(struct snd_pcm_hw_params *params, | |
960 | struct snd_pcm_hw_rule *rule) | |
961 | { | |
962 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 963 | struct audioformat *fp; |
e5779998 DM |
964 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
965 | unsigned int rmin, rmax; | |
966 | int changed; | |
967 | ||
968 | hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); | |
969 | changed = 0; | |
970 | rmin = rmax = 0; | |
88766f04 | 971 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
972 | if (!hw_check_valid_format(subs, params, fp)) |
973 | continue; | |
974 | if (changed++) { | |
975 | if (rmin > fp->channels) | |
976 | rmin = fp->channels; | |
977 | if (rmax < fp->channels) | |
978 | rmax = fp->channels; | |
979 | } else { | |
980 | rmin = fp->channels; | |
981 | rmax = fp->channels; | |
982 | } | |
983 | } | |
984 | ||
985 | if (!changed) { | |
986 | hwc_debug(" --> get empty\n"); | |
987 | it->empty = 1; | |
988 | return -EINVAL; | |
989 | } | |
990 | ||
991 | changed = 0; | |
992 | if (it->min < rmin) { | |
993 | it->min = rmin; | |
994 | it->openmin = 0; | |
995 | changed = 1; | |
996 | } | |
997 | if (it->max > rmax) { | |
998 | it->max = rmax; | |
999 | it->openmax = 0; | |
1000 | changed = 1; | |
1001 | } | |
1002 | if (snd_interval_checkempty(it)) { | |
1003 | it->empty = 1; | |
1004 | return -EINVAL; | |
1005 | } | |
1006 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
1007 | return changed; | |
1008 | } | |
1009 | ||
1010 | static int hw_rule_format(struct snd_pcm_hw_params *params, | |
1011 | struct snd_pcm_hw_rule *rule) | |
1012 | { | |
1013 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 1014 | struct audioformat *fp; |
e5779998 DM |
1015 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
1016 | u64 fbits; | |
1017 | u32 oldbits[2]; | |
1018 | int changed; | |
1019 | ||
1020 | hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); | |
1021 | fbits = 0; | |
88766f04 | 1022 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1023 | if (!hw_check_valid_format(subs, params, fp)) |
1024 | continue; | |
015eb0b0 | 1025 | fbits |= fp->formats; |
e5779998 DM |
1026 | } |
1027 | ||
1028 | oldbits[0] = fmt->bits[0]; | |
1029 | oldbits[1] = fmt->bits[1]; | |
1030 | fmt->bits[0] &= (u32)fbits; | |
1031 | fmt->bits[1] &= (u32)(fbits >> 32); | |
1032 | if (!fmt->bits[0] && !fmt->bits[1]) { | |
1033 | hwc_debug(" --> get empty\n"); | |
1034 | return -EINVAL; | |
1035 | } | |
1036 | changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); | |
1037 | hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); | |
1038 | return changed; | |
1039 | } | |
1040 | ||
1041 | static int hw_rule_period_time(struct snd_pcm_hw_params *params, | |
1042 | struct snd_pcm_hw_rule *rule) | |
1043 | { | |
1044 | struct snd_usb_substream *subs = rule->private; | |
1045 | struct audioformat *fp; | |
1046 | struct snd_interval *it; | |
1047 | unsigned char min_datainterval; | |
1048 | unsigned int pmin; | |
1049 | int changed; | |
1050 | ||
1051 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
1052 | hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); | |
1053 | min_datainterval = 0xff; | |
1054 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
1055 | if (!hw_check_valid_format(subs, params, fp)) | |
1056 | continue; | |
1057 | min_datainterval = min(min_datainterval, fp->datainterval); | |
1058 | } | |
1059 | if (min_datainterval == 0xff) { | |
a7ce2e0d | 1060 | hwc_debug(" --> get empty\n"); |
e5779998 DM |
1061 | it->empty = 1; |
1062 | return -EINVAL; | |
1063 | } | |
1064 | pmin = 125 * (1 << min_datainterval); | |
1065 | changed = 0; | |
1066 | if (it->min < pmin) { | |
1067 | it->min = pmin; | |
1068 | it->openmin = 0; | |
1069 | changed = 1; | |
1070 | } | |
1071 | if (snd_interval_checkempty(it)) { | |
1072 | it->empty = 1; | |
1073 | return -EINVAL; | |
1074 | } | |
1075 | hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed); | |
1076 | return changed; | |
1077 | } | |
1078 | ||
1079 | /* | |
1080 | * If the device supports unusual bit rates, does the request meet these? | |
1081 | */ | |
1082 | static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, | |
1083 | struct snd_usb_substream *subs) | |
1084 | { | |
1085 | struct audioformat *fp; | |
0717d0f5 | 1086 | int *rate_list; |
e5779998 DM |
1087 | int count = 0, needs_knot = 0; |
1088 | int err; | |
1089 | ||
5cd5d7c4 CL |
1090 | kfree(subs->rate_list.list); |
1091 | subs->rate_list.list = NULL; | |
1092 | ||
e5779998 DM |
1093 | list_for_each_entry(fp, &subs->fmt_list, list) { |
1094 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) | |
1095 | return 0; | |
1096 | count += fp->nr_rates; | |
1097 | if (fp->rates & SNDRV_PCM_RATE_KNOT) | |
1098 | needs_knot = 1; | |
1099 | } | |
1100 | if (!needs_knot) | |
1101 | return 0; | |
1102 | ||
0717d0f5 TI |
1103 | subs->rate_list.list = rate_list = |
1104 | kmalloc(sizeof(int) * count, GFP_KERNEL); | |
8a8d56b2 JJ |
1105 | if (!subs->rate_list.list) |
1106 | return -ENOMEM; | |
1107 | subs->rate_list.count = count; | |
e5779998 DM |
1108 | subs->rate_list.mask = 0; |
1109 | count = 0; | |
1110 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
1111 | int i; | |
1112 | for (i = 0; i < fp->nr_rates; i++) | |
0717d0f5 | 1113 | rate_list[count++] = fp->rate_table[i]; |
e5779998 DM |
1114 | } |
1115 | err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1116 | &subs->rate_list); | |
1117 | if (err < 0) | |
1118 | return err; | |
1119 | ||
1120 | return 0; | |
1121 | } | |
1122 | ||
1123 | ||
1124 | /* | |
1125 | * set up the runtime hardware information. | |
1126 | */ | |
1127 | ||
1128 | static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) | |
1129 | { | |
88766f04 | 1130 | struct audioformat *fp; |
e5779998 DM |
1131 | unsigned int pt, ptmin; |
1132 | int param_period_time_if_needed; | |
1133 | int err; | |
1134 | ||
1135 | runtime->hw.formats = subs->formats; | |
1136 | ||
1137 | runtime->hw.rate_min = 0x7fffffff; | |
1138 | runtime->hw.rate_max = 0; | |
1139 | runtime->hw.channels_min = 256; | |
1140 | runtime->hw.channels_max = 0; | |
1141 | runtime->hw.rates = 0; | |
1142 | ptmin = UINT_MAX; | |
1143 | /* check min/max rates and channels */ | |
88766f04 | 1144 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1145 | runtime->hw.rates |= fp->rates; |
1146 | if (runtime->hw.rate_min > fp->rate_min) | |
1147 | runtime->hw.rate_min = fp->rate_min; | |
1148 | if (runtime->hw.rate_max < fp->rate_max) | |
1149 | runtime->hw.rate_max = fp->rate_max; | |
1150 | if (runtime->hw.channels_min > fp->channels) | |
1151 | runtime->hw.channels_min = fp->channels; | |
1152 | if (runtime->hw.channels_max < fp->channels) | |
1153 | runtime->hw.channels_max = fp->channels; | |
1154 | if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) { | |
1155 | /* FIXME: there might be more than one audio formats... */ | |
1156 | runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = | |
1157 | fp->frame_size; | |
1158 | } | |
1159 | pt = 125 * (1 << fp->datainterval); | |
1160 | ptmin = min(ptmin, pt); | |
1161 | } | |
88a8516a ON |
1162 | err = snd_usb_autoresume(subs->stream->chip); |
1163 | if (err < 0) | |
1164 | return err; | |
e5779998 DM |
1165 | |
1166 | param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME; | |
978520b7 | 1167 | if (subs->speed == USB_SPEED_FULL) |
e5779998 DM |
1168 | /* full speed devices have fixed data packet interval */ |
1169 | ptmin = 1000; | |
1170 | if (ptmin == 1000) | |
1171 | /* if period time doesn't go below 1 ms, no rules needed */ | |
1172 | param_period_time_if_needed = -1; | |
1173 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1174 | ptmin, UINT_MAX); | |
1175 | ||
1176 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1177 | hw_rule_rate, subs, | |
1178 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1179 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1180 | param_period_time_if_needed, | |
1181 | -1)) < 0) | |
88a8516a | 1182 | goto rep_err; |
e5779998 DM |
1183 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, |
1184 | hw_rule_channels, subs, | |
1185 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1186 | SNDRV_PCM_HW_PARAM_RATE, | |
1187 | param_period_time_if_needed, | |
1188 | -1)) < 0) | |
88a8516a | 1189 | goto rep_err; |
e5779998 DM |
1190 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, |
1191 | hw_rule_format, subs, | |
1192 | SNDRV_PCM_HW_PARAM_RATE, | |
1193 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1194 | param_period_time_if_needed, | |
1195 | -1)) < 0) | |
88a8516a | 1196 | goto rep_err; |
e5779998 DM |
1197 | if (param_period_time_if_needed >= 0) { |
1198 | err = snd_pcm_hw_rule_add(runtime, 0, | |
1199 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1200 | hw_rule_period_time, subs, | |
1201 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1202 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1203 | SNDRV_PCM_HW_PARAM_RATE, | |
1204 | -1); | |
1205 | if (err < 0) | |
88a8516a | 1206 | goto rep_err; |
e5779998 DM |
1207 | } |
1208 | if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0) | |
88a8516a | 1209 | goto rep_err; |
e5779998 | 1210 | return 0; |
88a8516a ON |
1211 | |
1212 | rep_err: | |
1213 | snd_usb_autosuspend(subs->stream->chip); | |
1214 | return err; | |
e5779998 DM |
1215 | } |
1216 | ||
1217 | static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction) | |
1218 | { | |
1219 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); | |
1220 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1221 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1222 | ||
1223 | subs->interface = -1; | |
e11b4e0e | 1224 | subs->altset_idx = 0; |
e5779998 DM |
1225 | runtime->hw = snd_usb_hardware; |
1226 | runtime->private_data = subs; | |
1227 | subs->pcm_substream = substream; | |
88a8516a | 1228 | /* runtime PM is also done there */ |
d24f5061 DM |
1229 | |
1230 | /* initialize DSD/DOP context */ | |
1231 | subs->dsd_dop.byte_idx = 0; | |
1232 | subs->dsd_dop.channel = 0; | |
1233 | subs->dsd_dop.marker = 1; | |
1234 | ||
e5779998 DM |
1235 | return setup_hw_info(runtime, subs); |
1236 | } | |
1237 | ||
1238 | static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction) | |
1239 | { | |
1240 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); | |
1241 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1242 | ||
b0db6063 | 1243 | stop_endpoints(subs, true); |
68e67f40 | 1244 | |
47ab1545 TI |
1245 | if (subs->interface >= 0 && |
1246 | !snd_usb_lock_shutdown(subs->stream->chip)) { | |
68e67f40 DM |
1247 | usb_set_interface(subs->dev, subs->interface, 0); |
1248 | subs->interface = -1; | |
47ab1545 | 1249 | snd_usb_unlock_shutdown(subs->stream->chip); |
68e67f40 DM |
1250 | } |
1251 | ||
e5779998 | 1252 | subs->pcm_substream = NULL; |
88a8516a | 1253 | snd_usb_autosuspend(subs->stream->chip); |
edcd3633 | 1254 | |
68e67f40 | 1255 | return 0; |
edcd3633 DM |
1256 | } |
1257 | ||
1258 | /* Since a URB can handle only a single linear buffer, we must use double | |
1259 | * buffering when the data to be transferred overflows the buffer boundary. | |
1260 | * To avoid inconsistencies when updating hwptr_done, we use double buffering | |
1261 | * for all URBs. | |
1262 | */ | |
1263 | static void retire_capture_urb(struct snd_usb_substream *subs, | |
1264 | struct urb *urb) | |
1265 | { | |
1266 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1267 | unsigned int stride, frames, bytes, oldptr; | |
1268 | int i, period_elapsed = 0; | |
1269 | unsigned long flags; | |
1270 | unsigned char *cp; | |
e4cc6153 PLB |
1271 | int current_frame_number; |
1272 | ||
1273 | /* read frame number here, update pointer in critical section */ | |
1274 | current_frame_number = usb_get_current_frame_number(subs->dev); | |
edcd3633 DM |
1275 | |
1276 | stride = runtime->frame_bits >> 3; | |
1277 | ||
1278 | for (i = 0; i < urb->number_of_packets; i++) { | |
1539d4f8 | 1279 | cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset + subs->pkt_offset_adj; |
edcd3633 | 1280 | if (urb->iso_frame_desc[i].status && printk_ratelimit()) { |
0ba41d91 TI |
1281 | dev_dbg(&subs->dev->dev, "frame %d active: %d\n", |
1282 | i, urb->iso_frame_desc[i].status); | |
edcd3633 DM |
1283 | // continue; |
1284 | } | |
1285 | bytes = urb->iso_frame_desc[i].actual_length; | |
1286 | frames = bytes / stride; | |
1287 | if (!subs->txfr_quirk) | |
1288 | bytes = frames * stride; | |
1289 | if (bytes % (runtime->sample_bits >> 3) != 0) { | |
edcd3633 | 1290 | int oldbytes = bytes; |
edcd3633 | 1291 | bytes = frames * stride; |
0ba41d91 TI |
1292 | dev_warn(&subs->dev->dev, |
1293 | "Corrected urb data len. %d->%d\n", | |
edcd3633 DM |
1294 | oldbytes, bytes); |
1295 | } | |
1296 | /* update the current pointer */ | |
1297 | spin_lock_irqsave(&subs->lock, flags); | |
1298 | oldptr = subs->hwptr_done; | |
1299 | subs->hwptr_done += bytes; | |
1300 | if (subs->hwptr_done >= runtime->buffer_size * stride) | |
1301 | subs->hwptr_done -= runtime->buffer_size * stride; | |
1302 | frames = (bytes + (oldptr % stride)) / stride; | |
1303 | subs->transfer_done += frames; | |
1304 | if (subs->transfer_done >= runtime->period_size) { | |
1305 | subs->transfer_done -= runtime->period_size; | |
1306 | period_elapsed = 1; | |
1307 | } | |
e4cc6153 PLB |
1308 | /* capture delay is by construction limited to one URB, |
1309 | * reset delays here | |
1310 | */ | |
1311 | runtime->delay = subs->last_delay = 0; | |
1312 | ||
1313 | /* realign last_frame_number */ | |
1314 | subs->last_frame_number = current_frame_number; | |
1315 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1316 | ||
edcd3633 DM |
1317 | spin_unlock_irqrestore(&subs->lock, flags); |
1318 | /* copy a data chunk */ | |
1319 | if (oldptr + bytes > runtime->buffer_size * stride) { | |
1320 | unsigned int bytes1 = | |
1321 | runtime->buffer_size * stride - oldptr; | |
1322 | memcpy(runtime->dma_area + oldptr, cp, bytes1); | |
1323 | memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1); | |
1324 | } else { | |
1325 | memcpy(runtime->dma_area + oldptr, cp, bytes); | |
1326 | } | |
1327 | } | |
1328 | ||
1329 | if (period_elapsed) | |
1330 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1331 | } | |
1332 | ||
d24f5061 DM |
1333 | static inline void fill_playback_urb_dsd_dop(struct snd_usb_substream *subs, |
1334 | struct urb *urb, unsigned int bytes) | |
1335 | { | |
1336 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1337 | unsigned int stride = runtime->frame_bits >> 3; | |
1338 | unsigned int dst_idx = 0; | |
1339 | unsigned int src_idx = subs->hwptr_done; | |
1340 | unsigned int wrap = runtime->buffer_size * stride; | |
1341 | u8 *dst = urb->transfer_buffer; | |
1342 | u8 *src = runtime->dma_area; | |
1343 | u8 marker[] = { 0x05, 0xfa }; | |
1344 | ||
1345 | /* | |
1346 | * The DSP DOP format defines a way to transport DSD samples over | |
1347 | * normal PCM data endpoints. It requires stuffing of marker bytes | |
1348 | * (0x05 and 0xfa, alternating per sample frame), and then expects | |
1349 | * 2 additional bytes of actual payload. The whole frame is stored | |
1350 | * LSB. | |
1351 | * | |
1352 | * Hence, for a stereo transport, the buffer layout looks like this, | |
1353 | * where L refers to left channel samples and R to right. | |
1354 | * | |
1355 | * L1 L2 0x05 R1 R2 0x05 L3 L4 0xfa R3 R4 0xfa | |
1356 | * L5 L6 0x05 R5 R6 0x05 L7 L8 0xfa R7 R8 0xfa | |
1357 | * ..... | |
1358 | * | |
1359 | */ | |
1360 | ||
1361 | while (bytes--) { | |
1362 | if (++subs->dsd_dop.byte_idx == 3) { | |
1363 | /* frame boundary? */ | |
1364 | dst[dst_idx++] = marker[subs->dsd_dop.marker]; | |
1365 | src_idx += 2; | |
1366 | subs->dsd_dop.byte_idx = 0; | |
1367 | ||
1368 | if (++subs->dsd_dop.channel % runtime->channels == 0) { | |
1369 | /* alternate the marker */ | |
1370 | subs->dsd_dop.marker++; | |
1371 | subs->dsd_dop.marker %= ARRAY_SIZE(marker); | |
1372 | subs->dsd_dop.channel = 0; | |
1373 | } | |
1374 | } else { | |
1375 | /* stuff the DSD payload */ | |
1376 | int idx = (src_idx + subs->dsd_dop.byte_idx - 1) % wrap; | |
44dcbbb1 DM |
1377 | |
1378 | if (subs->cur_audiofmt->dsd_bitrev) | |
1379 | dst[dst_idx++] = bitrev8(src[idx]); | |
1380 | else | |
1381 | dst[dst_idx++] = src[idx]; | |
1382 | ||
d24f5061 DM |
1383 | subs->hwptr_done++; |
1384 | } | |
1385 | } | |
4c4e4391 RW |
1386 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1387 | subs->hwptr_done -= runtime->buffer_size * stride; | |
d24f5061 DM |
1388 | } |
1389 | ||
b97a9369 RW |
1390 | static void copy_to_urb(struct snd_usb_substream *subs, struct urb *urb, |
1391 | int offset, int stride, unsigned int bytes) | |
07a40c2f RW |
1392 | { |
1393 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1394 | ||
1395 | if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { | |
1396 | /* err, the transferred area goes over buffer boundary. */ | |
1397 | unsigned int bytes1 = | |
1398 | runtime->buffer_size * stride - subs->hwptr_done; | |
b97a9369 | 1399 | memcpy(urb->transfer_buffer + offset, |
07a40c2f | 1400 | runtime->dma_area + subs->hwptr_done, bytes1); |
b97a9369 | 1401 | memcpy(urb->transfer_buffer + offset + bytes1, |
07a40c2f RW |
1402 | runtime->dma_area, bytes - bytes1); |
1403 | } else { | |
b97a9369 | 1404 | memcpy(urb->transfer_buffer + offset, |
07a40c2f RW |
1405 | runtime->dma_area + subs->hwptr_done, bytes); |
1406 | } | |
1407 | subs->hwptr_done += bytes; | |
4c4e4391 RW |
1408 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1409 | subs->hwptr_done -= runtime->buffer_size * stride; | |
07a40c2f RW |
1410 | } |
1411 | ||
edcd3633 DM |
1412 | static void prepare_playback_urb(struct snd_usb_substream *subs, |
1413 | struct urb *urb) | |
1414 | { | |
1415 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
245baf98 | 1416 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
edcd3633 DM |
1417 | struct snd_urb_ctx *ctx = urb->context; |
1418 | unsigned int counts, frames, bytes; | |
1419 | int i, stride, period_elapsed = 0; | |
1420 | unsigned long flags; | |
1421 | ||
1422 | stride = runtime->frame_bits >> 3; | |
1423 | ||
1424 | frames = 0; | |
1425 | urb->number_of_packets = 0; | |
1426 | spin_lock_irqsave(&subs->lock, flags); | |
976b6c06 | 1427 | subs->frame_limit += ep->max_urb_frames; |
edcd3633 | 1428 | for (i = 0; i < ctx->packets; i++) { |
245baf98 DM |
1429 | if (ctx->packet_size[i]) |
1430 | counts = ctx->packet_size[i]; | |
1431 | else | |
1432 | counts = snd_usb_endpoint_next_packet_size(ep); | |
1433 | ||
edcd3633 | 1434 | /* set up descriptor */ |
8a2a74d2 DM |
1435 | urb->iso_frame_desc[i].offset = frames * ep->stride; |
1436 | urb->iso_frame_desc[i].length = counts * ep->stride; | |
edcd3633 DM |
1437 | frames += counts; |
1438 | urb->number_of_packets++; | |
1439 | subs->transfer_done += counts; | |
1440 | if (subs->transfer_done >= runtime->period_size) { | |
1441 | subs->transfer_done -= runtime->period_size; | |
976b6c06 | 1442 | subs->frame_limit = 0; |
edcd3633 DM |
1443 | period_elapsed = 1; |
1444 | if (subs->fmt_type == UAC_FORMAT_TYPE_II) { | |
1445 | if (subs->transfer_done > 0) { | |
1446 | /* FIXME: fill-max mode is not | |
1447 | * supported yet */ | |
1448 | frames -= subs->transfer_done; | |
1449 | counts -= subs->transfer_done; | |
1450 | urb->iso_frame_desc[i].length = | |
8a2a74d2 | 1451 | counts * ep->stride; |
edcd3633 DM |
1452 | subs->transfer_done = 0; |
1453 | } | |
1454 | i++; | |
1455 | if (i < ctx->packets) { | |
1456 | /* add a transfer delimiter */ | |
1457 | urb->iso_frame_desc[i].offset = | |
8a2a74d2 | 1458 | frames * ep->stride; |
edcd3633 DM |
1459 | urb->iso_frame_desc[i].length = 0; |
1460 | urb->number_of_packets++; | |
1461 | } | |
1462 | break; | |
1463 | } | |
1464 | } | |
976b6c06 AS |
1465 | /* finish at the period boundary or after enough frames */ |
1466 | if ((period_elapsed || | |
1467 | subs->transfer_done >= subs->frame_limit) && | |
1468 | !snd_usb_endpoint_implicit_feedback_sink(ep)) | |
edcd3633 DM |
1469 | break; |
1470 | } | |
8a2a74d2 | 1471 | bytes = frames * ep->stride; |
d24f5061 DM |
1472 | |
1473 | if (unlikely(subs->pcm_format == SNDRV_PCM_FORMAT_DSD_U16_LE && | |
1474 | subs->cur_audiofmt->dsd_dop)) { | |
1475 | fill_playback_urb_dsd_dop(subs, urb, bytes); | |
44dcbbb1 DM |
1476 | } else if (unlikely(subs->pcm_format == SNDRV_PCM_FORMAT_DSD_U8 && |
1477 | subs->cur_audiofmt->dsd_bitrev)) { | |
1478 | /* bit-reverse the bytes */ | |
1479 | u8 *buf = urb->transfer_buffer; | |
1480 | for (i = 0; i < bytes; i++) { | |
1481 | int idx = (subs->hwptr_done + i) | |
1482 | % (runtime->buffer_size * stride); | |
1483 | buf[i] = bitrev8(runtime->dma_area[idx]); | |
1484 | } | |
1485 | ||
1486 | subs->hwptr_done += bytes; | |
4c4e4391 RW |
1487 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1488 | subs->hwptr_done -= runtime->buffer_size * stride; | |
edcd3633 | 1489 | } else { |
d24f5061 | 1490 | /* usual PCM */ |
b97a9369 | 1491 | copy_to_urb(subs, urb, 0, stride, bytes); |
edcd3633 | 1492 | } |
d24f5061 | 1493 | |
fbcfbf5f DM |
1494 | /* update delay with exact number of samples queued */ |
1495 | runtime->delay = subs->last_delay; | |
edcd3633 | 1496 | runtime->delay += frames; |
fbcfbf5f DM |
1497 | subs->last_delay = runtime->delay; |
1498 | ||
1499 | /* realign last_frame_number */ | |
1500 | subs->last_frame_number = usb_get_current_frame_number(subs->dev); | |
1501 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1502 | ||
ea33d359 PLB |
1503 | if (subs->trigger_tstamp_pending_update) { |
1504 | /* this is the first actual URB submitted, | |
1505 | * update trigger timestamp to reflect actual start time | |
1506 | */ | |
1507 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); | |
1508 | subs->trigger_tstamp_pending_update = false; | |
1509 | } | |
1510 | ||
edcd3633 DM |
1511 | spin_unlock_irqrestore(&subs->lock, flags); |
1512 | urb->transfer_buffer_length = bytes; | |
1513 | if (period_elapsed) | |
1514 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1515 | } | |
1516 | ||
1517 | /* | |
1518 | * process after playback data complete | |
1519 | * - decrease the delay count again | |
1520 | */ | |
1521 | static void retire_playback_urb(struct snd_usb_substream *subs, | |
1522 | struct urb *urb) | |
1523 | { | |
1524 | unsigned long flags; | |
1525 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
8a2a74d2 DM |
1526 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
1527 | int processed = urb->transfer_buffer_length / ep->stride; | |
fbcfbf5f | 1528 | int est_delay; |
edcd3633 | 1529 | |
1213a205 TI |
1530 | /* ignore the delay accounting when procssed=0 is given, i.e. |
1531 | * silent payloads are procssed before handling the actual data | |
1532 | */ | |
1533 | if (!processed) | |
1534 | return; | |
1535 | ||
edcd3633 | 1536 | spin_lock_irqsave(&subs->lock, flags); |
48779a0b TI |
1537 | if (!subs->last_delay) |
1538 | goto out; /* short path */ | |
1539 | ||
fbcfbf5f DM |
1540 | est_delay = snd_usb_pcm_delay(subs, runtime->rate); |
1541 | /* update delay with exact number of samples played */ | |
1542 | if (processed > subs->last_delay) | |
1543 | subs->last_delay = 0; | |
edcd3633 | 1544 | else |
fbcfbf5f DM |
1545 | subs->last_delay -= processed; |
1546 | runtime->delay = subs->last_delay; | |
1547 | ||
1548 | /* | |
1549 | * Report when delay estimate is off by more than 2ms. | |
1550 | * The error should be lower than 2ms since the estimate relies | |
1551 | * on two reads of a counter updated every ms. | |
1552 | */ | |
b7a77235 SE |
1553 | if (abs(est_delay - subs->last_delay) * 1000 > runtime->rate * 2) |
1554 | dev_dbg_ratelimited(&subs->dev->dev, | |
0ba41d91 | 1555 | "delay: estimated %d, actual %d\n", |
fbcfbf5f DM |
1556 | est_delay, subs->last_delay); |
1557 | ||
48779a0b TI |
1558 | if (!subs->running) { |
1559 | /* update last_frame_number for delay counting here since | |
1560 | * prepare_playback_urb won't be called during pause | |
1561 | */ | |
1562 | subs->last_frame_number = | |
1563 | usb_get_current_frame_number(subs->dev) & 0xff; | |
1564 | } | |
1565 | ||
1566 | out: | |
edcd3633 | 1567 | spin_unlock_irqrestore(&subs->lock, flags); |
e5779998 DM |
1568 | } |
1569 | ||
1570 | static int snd_usb_playback_open(struct snd_pcm_substream *substream) | |
1571 | { | |
1572 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK); | |
1573 | } | |
1574 | ||
1575 | static int snd_usb_playback_close(struct snd_pcm_substream *substream) | |
1576 | { | |
1577 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK); | |
1578 | } | |
1579 | ||
1580 | static int snd_usb_capture_open(struct snd_pcm_substream *substream) | |
1581 | { | |
1582 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE); | |
1583 | } | |
1584 | ||
1585 | static int snd_usb_capture_close(struct snd_pcm_substream *substream) | |
1586 | { | |
1587 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE); | |
1588 | } | |
1589 | ||
edcd3633 DM |
1590 | static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, |
1591 | int cmd) | |
1592 | { | |
1593 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1594 | ||
1595 | switch (cmd) { | |
1596 | case SNDRV_PCM_TRIGGER_START: | |
ea33d359 | 1597 | subs->trigger_tstamp_pending_update = true; |
edcd3633 DM |
1598 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
1599 | subs->data_endpoint->prepare_data_urb = prepare_playback_urb; | |
1600 | subs->data_endpoint->retire_data_urb = retire_playback_urb; | |
97f8d3b6 | 1601 | subs->running = 1; |
edcd3633 DM |
1602 | return 0; |
1603 | case SNDRV_PCM_TRIGGER_STOP: | |
a9bb3626 | 1604 | stop_endpoints(subs, false); |
97f8d3b6 | 1605 | subs->running = 0; |
edcd3633 DM |
1606 | return 0; |
1607 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1608 | subs->data_endpoint->prepare_data_urb = NULL; | |
48779a0b TI |
1609 | /* keep retire_data_urb for delay calculation */ |
1610 | subs->data_endpoint->retire_data_urb = retire_playback_urb; | |
97f8d3b6 | 1611 | subs->running = 0; |
edcd3633 DM |
1612 | return 0; |
1613 | } | |
1614 | ||
1615 | return -EINVAL; | |
1616 | } | |
1617 | ||
afe25967 DM |
1618 | static int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, |
1619 | int cmd) | |
edcd3633 DM |
1620 | { |
1621 | int err; | |
1622 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1623 | ||
1624 | switch (cmd) { | |
1625 | case SNDRV_PCM_TRIGGER_START: | |
a9bb3626 | 1626 | err = start_endpoints(subs, false); |
edcd3633 DM |
1627 | if (err < 0) |
1628 | return err; | |
1629 | ||
1630 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1631 | subs->running = 1; |
edcd3633 DM |
1632 | return 0; |
1633 | case SNDRV_PCM_TRIGGER_STOP: | |
a9bb3626 | 1634 | stop_endpoints(subs, false); |
97f8d3b6 | 1635 | subs->running = 0; |
edcd3633 DM |
1636 | return 0; |
1637 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1638 | subs->data_endpoint->retire_data_urb = NULL; | |
97f8d3b6 | 1639 | subs->running = 0; |
edcd3633 DM |
1640 | return 0; |
1641 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1642 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1643 | subs->running = 1; |
edcd3633 DM |
1644 | return 0; |
1645 | } | |
1646 | ||
1647 | return -EINVAL; | |
1648 | } | |
1649 | ||
e5779998 DM |
1650 | static struct snd_pcm_ops snd_usb_playback_ops = { |
1651 | .open = snd_usb_playback_open, | |
1652 | .close = snd_usb_playback_close, | |
1653 | .ioctl = snd_pcm_lib_ioctl, | |
1654 | .hw_params = snd_usb_hw_params, | |
1655 | .hw_free = snd_usb_hw_free, | |
1656 | .prepare = snd_usb_pcm_prepare, | |
1657 | .trigger = snd_usb_substream_playback_trigger, | |
1658 | .pointer = snd_usb_pcm_pointer, | |
1659 | .page = snd_pcm_lib_get_vmalloc_page, | |
1660 | .mmap = snd_pcm_lib_mmap_vmalloc, | |
1661 | }; | |
1662 | ||
1663 | static struct snd_pcm_ops snd_usb_capture_ops = { | |
1664 | .open = snd_usb_capture_open, | |
1665 | .close = snd_usb_capture_close, | |
1666 | .ioctl = snd_pcm_lib_ioctl, | |
1667 | .hw_params = snd_usb_hw_params, | |
1668 | .hw_free = snd_usb_hw_free, | |
1669 | .prepare = snd_usb_pcm_prepare, | |
1670 | .trigger = snd_usb_substream_capture_trigger, | |
1671 | .pointer = snd_usb_pcm_pointer, | |
1672 | .page = snd_pcm_lib_get_vmalloc_page, | |
1673 | .mmap = snd_pcm_lib_mmap_vmalloc, | |
1674 | }; | |
1675 | ||
1676 | void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream) | |
1677 | { | |
1678 | snd_pcm_set_ops(pcm, stream, | |
1679 | stream == SNDRV_PCM_STREAM_PLAYBACK ? | |
1680 | &snd_usb_playback_ops : &snd_usb_capture_ops); | |
1681 | } |