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e5779998 DM |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
15 | */ | |
16 | ||
17 | #include <linux/init.h> | |
9966ddaf | 18 | #include <linux/slab.h> |
44dcbbb1 | 19 | #include <linux/bitrev.h> |
edcd3633 | 20 | #include <linux/ratelimit.h> |
e5779998 DM |
21 | #include <linux/usb.h> |
22 | #include <linux/usb/audio.h> | |
7e847894 | 23 | #include <linux/usb/audio-v2.h> |
e5779998 DM |
24 | |
25 | #include <sound/core.h> | |
26 | #include <sound/pcm.h> | |
27 | #include <sound/pcm_params.h> | |
28 | ||
29 | #include "usbaudio.h" | |
30 | #include "card.h" | |
31 | #include "quirks.h" | |
32 | #include "debug.h" | |
c731bc96 | 33 | #include "endpoint.h" |
e5779998 DM |
34 | #include "helper.h" |
35 | #include "pcm.h" | |
79f920fb | 36 | #include "clock.h" |
88a8516a | 37 | #include "power.h" |
e5779998 | 38 | |
edcd3633 DM |
39 | #define SUBSTREAM_FLAG_DATA_EP_STARTED 0 |
40 | #define SUBSTREAM_FLAG_SYNC_EP_STARTED 1 | |
41 | ||
294c4fb8 PLB |
42 | /* return the estimated delay based on USB frame counters */ |
43 | snd_pcm_uframes_t snd_usb_pcm_delay(struct snd_usb_substream *subs, | |
44 | unsigned int rate) | |
45 | { | |
46 | int current_frame_number; | |
47 | int frame_diff; | |
48 | int est_delay; | |
49 | ||
48779a0b TI |
50 | if (!subs->last_delay) |
51 | return 0; /* short path */ | |
52 | ||
294c4fb8 PLB |
53 | current_frame_number = usb_get_current_frame_number(subs->dev); |
54 | /* | |
55 | * HCD implementations use different widths, use lower 8 bits. | |
56 | * The delay will be managed up to 256ms, which is more than | |
57 | * enough | |
58 | */ | |
59 | frame_diff = (current_frame_number - subs->last_frame_number) & 0xff; | |
60 | ||
61 | /* Approximation based on number of samples per USB frame (ms), | |
62 | some truncation for 44.1 but the estimate is good enough */ | |
e4cc6153 PLB |
63 | est_delay = frame_diff * rate / 1000; |
64 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) | |
65 | est_delay = subs->last_delay - est_delay; | |
66 | else | |
67 | est_delay = subs->last_delay + est_delay; | |
68 | ||
294c4fb8 PLB |
69 | if (est_delay < 0) |
70 | est_delay = 0; | |
71 | return est_delay; | |
72 | } | |
73 | ||
e5779998 DM |
74 | /* |
75 | * return the current pcm pointer. just based on the hwptr_done value. | |
76 | */ | |
77 | static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream) | |
78 | { | |
e92be814 | 79 | struct snd_usb_substream *subs = substream->runtime->private_data; |
e5779998 DM |
80 | unsigned int hwptr_done; |
81 | ||
47ab1545 | 82 | if (atomic_read(&subs->stream->chip->shutdown)) |
978520b7 | 83 | return SNDRV_PCM_POS_XRUN; |
e5779998 DM |
84 | spin_lock(&subs->lock); |
85 | hwptr_done = subs->hwptr_done; | |
e4cc6153 | 86 | substream->runtime->delay = snd_usb_pcm_delay(subs, |
294c4fb8 | 87 | substream->runtime->rate); |
e5779998 DM |
88 | spin_unlock(&subs->lock); |
89 | return hwptr_done / (substream->runtime->frame_bits >> 3); | |
90 | } | |
91 | ||
92 | /* | |
93 | * find a matching audio format | |
94 | */ | |
61a70950 | 95 | static struct audioformat *find_format(struct snd_usb_substream *subs) |
e5779998 | 96 | { |
88766f04 | 97 | struct audioformat *fp; |
e5779998 DM |
98 | struct audioformat *found = NULL; |
99 | int cur_attr = 0, attr; | |
100 | ||
88766f04 | 101 | list_for_each_entry(fp, &subs->fmt_list, list) { |
74c34ca1 | 102 | if (!(fp->formats & pcm_format_to_bits(subs->pcm_format))) |
015eb0b0 | 103 | continue; |
61a70950 | 104 | if (fp->channels != subs->channels) |
e5779998 | 105 | continue; |
61a70950 DR |
106 | if (subs->cur_rate < fp->rate_min || |
107 | subs->cur_rate > fp->rate_max) | |
e5779998 DM |
108 | continue; |
109 | if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { | |
110 | unsigned int i; | |
111 | for (i = 0; i < fp->nr_rates; i++) | |
61a70950 | 112 | if (fp->rate_table[i] == subs->cur_rate) |
e5779998 DM |
113 | break; |
114 | if (i >= fp->nr_rates) | |
115 | continue; | |
116 | } | |
117 | attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
118 | if (! found) { | |
119 | found = fp; | |
120 | cur_attr = attr; | |
121 | continue; | |
122 | } | |
123 | /* avoid async out and adaptive in if the other method | |
124 | * supports the same format. | |
125 | * this is a workaround for the case like | |
126 | * M-audio audiophile USB. | |
127 | */ | |
128 | if (attr != cur_attr) { | |
129 | if ((attr == USB_ENDPOINT_SYNC_ASYNC && | |
130 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
131 | (attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
132 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) | |
133 | continue; | |
134 | if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC && | |
135 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
136 | (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
137 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { | |
138 | found = fp; | |
139 | cur_attr = attr; | |
140 | continue; | |
141 | } | |
142 | } | |
143 | /* find the format with the largest max. packet size */ | |
144 | if (fp->maxpacksize > found->maxpacksize) { | |
145 | found = fp; | |
146 | cur_attr = attr; | |
147 | } | |
148 | } | |
149 | return found; | |
150 | } | |
151 | ||
767d75ad DM |
152 | static int init_pitch_v1(struct snd_usb_audio *chip, int iface, |
153 | struct usb_host_interface *alts, | |
154 | struct audioformat *fmt) | |
155 | { | |
156 | struct usb_device *dev = chip->dev; | |
157 | unsigned int ep; | |
158 | unsigned char data[1]; | |
159 | int err; | |
160 | ||
447d6275 TI |
161 | if (get_iface_desc(alts)->bNumEndpoints < 1) |
162 | return -EINVAL; | |
767d75ad DM |
163 | ep = get_endpoint(alts, 0)->bEndpointAddress; |
164 | ||
767d75ad | 165 | data[0] = 1; |
f25ecf8f TI |
166 | err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, |
167 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, | |
168 | UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, | |
169 | data, sizeof(data)); | |
170 | if (err < 0) { | |
0ba41d91 TI |
171 | usb_audio_err(chip, "%d:%d: cannot set enable PITCH\n", |
172 | iface, ep); | |
767d75ad DM |
173 | return err; |
174 | } | |
175 | ||
176 | return 0; | |
177 | } | |
e5779998 | 178 | |
92c25611 DM |
179 | static int init_pitch_v2(struct snd_usb_audio *chip, int iface, |
180 | struct usb_host_interface *alts, | |
181 | struct audioformat *fmt) | |
182 | { | |
183 | struct usb_device *dev = chip->dev; | |
184 | unsigned char data[1]; | |
92c25611 DM |
185 | int err; |
186 | ||
92c25611 | 187 | data[0] = 1; |
f25ecf8f TI |
188 | err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR, |
189 | USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT, | |
190 | UAC2_EP_CS_PITCH << 8, 0, | |
191 | data, sizeof(data)); | |
192 | if (err < 0) { | |
0ba41d91 TI |
193 | usb_audio_err(chip, "%d:%d: cannot set enable PITCH (v2)\n", |
194 | iface, fmt->altsetting); | |
92c25611 DM |
195 | return err; |
196 | } | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
e5779998 | 201 | /* |
92c25611 | 202 | * initialize the pitch control and sample rate |
e5779998 | 203 | */ |
767d75ad | 204 | int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface, |
e5779998 DM |
205 | struct usb_host_interface *alts, |
206 | struct audioformat *fmt) | |
207 | { | |
92c25611 DM |
208 | /* if endpoint doesn't have pitch control, bail out */ |
209 | if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) | |
210 | return 0; | |
211 | ||
8f898e92 | 212 | switch (fmt->protocol) { |
767d75ad | 213 | case UAC_VERSION_1: |
a2acad82 | 214 | default: |
767d75ad DM |
215 | return init_pitch_v1(chip, iface, alts, fmt); |
216 | ||
217 | case UAC_VERSION_2: | |
92c25611 | 218 | return init_pitch_v2(chip, iface, alts, fmt); |
767d75ad | 219 | } |
767d75ad DM |
220 | } |
221 | ||
1d0f9530 | 222 | static int start_endpoints(struct snd_usb_substream *subs) |
edcd3633 DM |
223 | { |
224 | int err; | |
225 | ||
226 | if (!subs->data_endpoint) | |
227 | return -EINVAL; | |
228 | ||
229 | if (!test_and_set_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) { | |
230 | struct snd_usb_endpoint *ep = subs->data_endpoint; | |
231 | ||
0ba41d91 | 232 | dev_dbg(&subs->dev->dev, "Starting data EP @%p\n", ep); |
edcd3633 DM |
233 | |
234 | ep->data_subs = subs; | |
1d0f9530 | 235 | err = snd_usb_endpoint_start(ep); |
edcd3633 DM |
236 | if (err < 0) { |
237 | clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags); | |
238 | return err; | |
239 | } | |
240 | } | |
241 | ||
242 | if (subs->sync_endpoint && | |
243 | !test_and_set_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) { | |
244 | struct snd_usb_endpoint *ep = subs->sync_endpoint; | |
245 | ||
2e4a263c | 246 | if (subs->data_endpoint->iface != subs->sync_endpoint->iface || |
df23a246 | 247 | subs->data_endpoint->altsetting != subs->sync_endpoint->altsetting) { |
2e4a263c DM |
248 | err = usb_set_interface(subs->dev, |
249 | subs->sync_endpoint->iface, | |
df23a246 | 250 | subs->sync_endpoint->altsetting); |
2e4a263c | 251 | if (err < 0) { |
06613f54 | 252 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); |
0ba41d91 TI |
253 | dev_err(&subs->dev->dev, |
254 | "%d:%d: cannot set interface (%d)\n", | |
2e4a263c | 255 | subs->sync_endpoint->iface, |
df23a246 | 256 | subs->sync_endpoint->altsetting, err); |
2e4a263c DM |
257 | return -EIO; |
258 | } | |
259 | } | |
260 | ||
0ba41d91 | 261 | dev_dbg(&subs->dev->dev, "Starting sync EP @%p\n", ep); |
edcd3633 DM |
262 | |
263 | ep->sync_slave = subs->data_endpoint; | |
1d0f9530 | 264 | err = snd_usb_endpoint_start(ep); |
edcd3633 DM |
265 | if (err < 0) { |
266 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); | |
267 | return err; | |
268 | } | |
269 | } | |
270 | ||
271 | return 0; | |
272 | } | |
273 | ||
a9bb3626 | 274 | static void stop_endpoints(struct snd_usb_substream *subs, bool wait) |
edcd3633 DM |
275 | { |
276 | if (test_and_clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) | |
b2eb950d | 277 | snd_usb_endpoint_stop(subs->sync_endpoint); |
edcd3633 DM |
278 | |
279 | if (test_and_clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) | |
b2eb950d TI |
280 | snd_usb_endpoint_stop(subs->data_endpoint); |
281 | ||
282 | if (wait) { | |
283 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); | |
284 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
285 | } | |
edcd3633 DM |
286 | } |
287 | ||
ba7c2be1 CL |
288 | static int search_roland_implicit_fb(struct usb_device *dev, int ifnum, |
289 | unsigned int altsetting, | |
290 | struct usb_host_interface **alts, | |
291 | unsigned int *ep) | |
292 | { | |
293 | struct usb_interface *iface; | |
294 | struct usb_interface_descriptor *altsd; | |
295 | struct usb_endpoint_descriptor *epd; | |
296 | ||
297 | iface = usb_ifnum_to_if(dev, ifnum); | |
298 | if (!iface || iface->num_altsetting < altsetting + 1) | |
299 | return -ENOENT; | |
300 | *alts = &iface->altsetting[altsetting]; | |
301 | altsd = get_iface_desc(*alts); | |
302 | if (altsd->bAlternateSetting != altsetting || | |
303 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC || | |
304 | (altsd->bInterfaceSubClass != 2 && | |
305 | altsd->bInterfaceProtocol != 2 ) || | |
306 | altsd->bNumEndpoints < 1) | |
307 | return -ENOENT; | |
308 | epd = get_endpoint(*alts, 0); | |
309 | if (!usb_endpoint_is_isoc_in(epd) || | |
310 | (epd->bmAttributes & USB_ENDPOINT_USAGE_MASK) != | |
311 | USB_ENDPOINT_USAGE_IMPLICIT_FB) | |
312 | return -ENOENT; | |
313 | *ep = epd->bEndpointAddress; | |
314 | return 0; | |
315 | } | |
316 | ||
2bc16b9f MR |
317 | /* Setup an implicit feedback endpoint from a quirk. Returns 0 if no quirk |
318 | * applies. Returns 1 if a quirk was found. | |
319 | */ | |
a60945fd EZ |
320 | static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs, |
321 | struct usb_device *dev, | |
322 | struct usb_interface_descriptor *altsd, | |
323 | unsigned int attr) | |
e5779998 | 324 | { |
a60945fd | 325 | struct usb_host_interface *alts; |
e5779998 | 326 | struct usb_interface *iface; |
a60945fd | 327 | unsigned int ep; |
103e9625 | 328 | unsigned int ifnum; |
c75a8a7a | 329 | |
914273c7 EZ |
330 | /* Implicit feedback sync EPs consumers are always playback EPs */ |
331 | if (subs->direction != SNDRV_PCM_STREAM_PLAYBACK) | |
332 | return 0; | |
333 | ||
c75a8a7a | 334 | switch (subs->stream->chip->usb_id) { |
ca10a7eb | 335 | case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ |
e9a25e04 | 336 | case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ |
914273c7 | 337 | ep = 0x81; |
103e9625 AA |
338 | ifnum = 3; |
339 | goto add_sync_ep_from_ifnum; | |
c75a8a7a DM |
340 | case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */ |
341 | case USB_ID(0x0763, 0x2081): | |
914273c7 | 342 | ep = 0x81; |
103e9625 AA |
343 | ifnum = 2; |
344 | goto add_sync_ep_from_ifnum; | |
345 | case USB_ID(0x2466, 0x8003): /* Fractal Audio Axe-Fx II */ | |
17f08b0d | 346 | ep = 0x86; |
103e9625 AA |
347 | ifnum = 2; |
348 | goto add_sync_ep_from_ifnum; | |
91a8561d AA |
349 | case USB_ID(0x2466, 0x8010): /* Fractal Audio Axe-Fx III */ |
350 | ep = 0x81; | |
351 | ifnum = 2; | |
352 | goto add_sync_ep_from_ifnum; | |
103e9625 | 353 | case USB_ID(0x1397, 0x0002): /* Behringer UFX1204 */ |
5e35dc03 | 354 | ep = 0x81; |
103e9625 AA |
355 | ifnum = 1; |
356 | goto add_sync_ep_from_ifnum; | |
c75a8a7a | 357 | } |
103e9625 | 358 | |
914273c7 | 359 | if (attr == USB_ENDPOINT_SYNC_ASYNC && |
ba7c2be1 CL |
360 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && |
361 | altsd->bInterfaceProtocol == 2 && | |
362 | altsd->bNumEndpoints == 1 && | |
363 | USB_ID_VENDOR(subs->stream->chip->usb_id) == 0x0582 /* Roland */ && | |
364 | search_roland_implicit_fb(dev, altsd->bInterfaceNumber + 1, | |
365 | altsd->bAlternateSetting, | |
366 | &alts, &ep) >= 0) { | |
ba7c2be1 CL |
367 | goto add_sync_ep; |
368 | } | |
edcd3633 | 369 | |
a60945fd EZ |
370 | /* No quirk */ |
371 | return 0; | |
372 | ||
103e9625 AA |
373 | add_sync_ep_from_ifnum: |
374 | iface = usb_ifnum_to_if(dev, ifnum); | |
375 | ||
376 | if (!iface || iface->num_altsetting == 0) | |
377 | return -EINVAL; | |
378 | ||
379 | alts = &iface->altsetting[1]; | |
380 | ||
a60945fd EZ |
381 | add_sync_ep: |
382 | subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, | |
383 | alts, ep, !subs->direction, | |
88abb8ef | 384 | SND_USB_ENDPOINT_TYPE_DATA); |
a60945fd EZ |
385 | if (!subs->sync_endpoint) |
386 | return -EINVAL; | |
387 | ||
388 | subs->data_endpoint->sync_master = subs->sync_endpoint; | |
389 | ||
2bc16b9f | 390 | return 1; |
a60945fd EZ |
391 | } |
392 | ||
393 | static int set_sync_endpoint(struct snd_usb_substream *subs, | |
394 | struct audioformat *fmt, | |
395 | struct usb_device *dev, | |
396 | struct usb_host_interface *alts, | |
397 | struct usb_interface_descriptor *altsd) | |
398 | { | |
399 | int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; | |
400 | unsigned int ep, attr; | |
95fec883 | 401 | bool implicit_fb; |
a60945fd EZ |
402 | int err; |
403 | ||
404 | /* we need a sync pipe in async OUT or adaptive IN mode */ | |
405 | /* check the number of EP, since some devices have broken | |
406 | * descriptors which fool us. if it has only one EP, | |
407 | * assume it as adaptive-out or sync-in. | |
408 | */ | |
409 | attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
410 | ||
63018447 PLB |
411 | if ((is_playback && (attr != USB_ENDPOINT_SYNC_ASYNC)) || |
412 | (!is_playback && (attr != USB_ENDPOINT_SYNC_ADAPTIVE))) { | |
413 | ||
414 | /* | |
415 | * In these modes the notion of sync_endpoint is irrelevant. | |
416 | * Reset pointers to avoid using stale data from previously | |
417 | * used settings, e.g. when configuration and endpoints were | |
418 | * changed | |
419 | */ | |
420 | ||
421 | subs->sync_endpoint = NULL; | |
422 | subs->data_endpoint->sync_master = NULL; | |
423 | } | |
424 | ||
a60945fd EZ |
425 | err = set_sync_ep_implicit_fb_quirk(subs, dev, altsd, attr); |
426 | if (err < 0) | |
427 | return err; | |
428 | ||
2bc16b9f MR |
429 | /* endpoint set by quirk */ |
430 | if (err > 0) | |
431 | return 0; | |
432 | ||
f34d0650 EZ |
433 | if (altsd->bNumEndpoints < 2) |
434 | return 0; | |
c75a8a7a | 435 | |
395ae54b PLB |
436 | if ((is_playback && (attr == USB_ENDPOINT_SYNC_SYNC || |
437 | attr == USB_ENDPOINT_SYNC_ADAPTIVE)) || | |
f34d0650 EZ |
438 | (!is_playback && attr != USB_ENDPOINT_SYNC_ADAPTIVE)) |
439 | return 0; | |
edcd3633 | 440 | |
395ae54b PLB |
441 | /* |
442 | * In case of illegal SYNC_NONE for OUT endpoint, we keep going to see | |
443 | * if we don't find a sync endpoint, as on M-Audio Transit. In case of | |
444 | * error fall back to SYNC mode and don't create sync endpoint | |
445 | */ | |
446 | ||
f34d0650 EZ |
447 | /* check sync-pipe endpoint */ |
448 | /* ... and check descriptor size before accessing bSynchAddress | |
449 | because there is a version of the SB Audigy 2 NX firmware lacking | |
450 | the audio fields in the endpoint descriptors */ | |
451 | if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC || | |
452 | (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && | |
95fec883 | 453 | get_endpoint(alts, 1)->bSynchAddress != 0)) { |
0ba41d91 TI |
454 | dev_err(&dev->dev, |
455 | "%d:%d : invalid sync pipe. bmAttributes %02x, bLength %d, bSynchAddress %02x\n", | |
456 | fmt->iface, fmt->altsetting, | |
f34d0650 EZ |
457 | get_endpoint(alts, 1)->bmAttributes, |
458 | get_endpoint(alts, 1)->bLength, | |
459 | get_endpoint(alts, 1)->bSynchAddress); | |
395ae54b PLB |
460 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
461 | return 0; | |
f34d0650 EZ |
462 | return -EINVAL; |
463 | } | |
464 | ep = get_endpoint(alts, 1)->bEndpointAddress; | |
95fec883 | 465 | if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
f34d0650 EZ |
466 | ((is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || |
467 | (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { | |
0ba41d91 TI |
468 | dev_err(&dev->dev, |
469 | "%d:%d : invalid sync pipe. is_playback %d, ep %02x, bSynchAddress %02x\n", | |
470 | fmt->iface, fmt->altsetting, | |
f34d0650 | 471 | is_playback, ep, get_endpoint(alts, 0)->bSynchAddress); |
395ae54b PLB |
472 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
473 | return 0; | |
f34d0650 | 474 | return -EINVAL; |
edcd3633 | 475 | } |
e5779998 | 476 | |
f34d0650 EZ |
477 | implicit_fb = (get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_USAGE_MASK) |
478 | == USB_ENDPOINT_USAGE_IMPLICIT_FB; | |
479 | ||
480 | subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, | |
481 | alts, ep, !subs->direction, | |
482 | implicit_fb ? | |
483 | SND_USB_ENDPOINT_TYPE_DATA : | |
484 | SND_USB_ENDPOINT_TYPE_SYNC); | |
395ae54b PLB |
485 | if (!subs->sync_endpoint) { |
486 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) | |
487 | return 0; | |
f34d0650 | 488 | return -EINVAL; |
395ae54b | 489 | } |
f34d0650 EZ |
490 | |
491 | subs->data_endpoint->sync_master = subs->sync_endpoint; | |
492 | ||
71bb64c5 EZ |
493 | return 0; |
494 | } | |
495 | ||
496 | /* | |
497 | * find a matching format and set up the interface | |
498 | */ | |
499 | static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) | |
500 | { | |
501 | struct usb_device *dev = subs->dev; | |
502 | struct usb_host_interface *alts; | |
503 | struct usb_interface_descriptor *altsd; | |
504 | struct usb_interface *iface; | |
505 | int err; | |
506 | ||
507 | iface = usb_ifnum_to_if(dev, fmt->iface); | |
508 | if (WARN_ON(!iface)) | |
509 | return -EINVAL; | |
b099b969 | 510 | alts = usb_altnum_to_altsetting(iface, fmt->altsetting); |
71bb64c5 EZ |
511 | altsd = get_iface_desc(alts); |
512 | if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting)) | |
513 | return -EINVAL; | |
514 | ||
515 | if (fmt == subs->cur_audiofmt) | |
516 | return 0; | |
517 | ||
518 | /* close the old interface */ | |
519 | if (subs->interface >= 0 && subs->interface != fmt->iface) { | |
8a463225 TI |
520 | if (!subs->stream->chip->keep_iface) { |
521 | err = usb_set_interface(subs->dev, subs->interface, 0); | |
522 | if (err < 0) { | |
523 | dev_err(&dev->dev, | |
524 | "%d:%d: return to setting 0 failed (%d)\n", | |
525 | fmt->iface, fmt->altsetting, err); | |
526 | return -EIO; | |
527 | } | |
71bb64c5 EZ |
528 | } |
529 | subs->interface = -1; | |
530 | subs->altset_idx = 0; | |
531 | } | |
532 | ||
533 | /* set interface */ | |
b099b969 | 534 | if (iface->cur_altsetting != alts) { |
6874daad JK |
535 | err = snd_usb_select_mode_quirk(subs, fmt); |
536 | if (err < 0) | |
537 | return -EIO; | |
538 | ||
71bb64c5 EZ |
539 | err = usb_set_interface(dev, fmt->iface, fmt->altsetting); |
540 | if (err < 0) { | |
0ba41d91 TI |
541 | dev_err(&dev->dev, |
542 | "%d:%d: usb_set_interface failed (%d)\n", | |
543 | fmt->iface, fmt->altsetting, err); | |
71bb64c5 EZ |
544 | return -EIO; |
545 | } | |
0ba41d91 TI |
546 | dev_dbg(&dev->dev, "setting usb interface %d:%d\n", |
547 | fmt->iface, fmt->altsetting); | |
71bb64c5 EZ |
548 | snd_usb_set_interface_quirk(dev); |
549 | } | |
550 | ||
b099b969 TI |
551 | subs->interface = fmt->iface; |
552 | subs->altset_idx = fmt->altset_idx; | |
71bb64c5 EZ |
553 | subs->data_endpoint = snd_usb_add_endpoint(subs->stream->chip, |
554 | alts, fmt->endpoint, subs->direction, | |
555 | SND_USB_ENDPOINT_TYPE_DATA); | |
556 | ||
557 | if (!subs->data_endpoint) | |
558 | return -EINVAL; | |
559 | ||
560 | err = set_sync_endpoint(subs, fmt, dev, alts, altsd); | |
561 | if (err < 0) | |
562 | return err; | |
563 | ||
d133f2c2 EZ |
564 | err = snd_usb_init_pitch(subs->stream->chip, fmt->iface, alts, fmt); |
565 | if (err < 0) | |
e5779998 DM |
566 | return err; |
567 | ||
568 | subs->cur_audiofmt = fmt; | |
569 | ||
570 | snd_usb_set_format_quirk(subs, fmt); | |
571 | ||
e5779998 DM |
572 | return 0; |
573 | } | |
574 | ||
0d9741c0 EZ |
575 | /* |
576 | * Return the score of matching two audioformats. | |
577 | * Veto the audioformat if: | |
578 | * - It has no channels for some reason. | |
579 | * - Requested PCM format is not supported. | |
580 | * - Requested sample rate is not supported. | |
581 | */ | |
0ba41d91 TI |
582 | static int match_endpoint_audioformats(struct snd_usb_substream *subs, |
583 | struct audioformat *fp, | |
584 | struct audioformat *match, int rate, | |
585 | snd_pcm_format_t pcm_format) | |
0d9741c0 EZ |
586 | { |
587 | int i; | |
588 | int score = 0; | |
589 | ||
590 | if (fp->channels < 1) { | |
0ba41d91 TI |
591 | dev_dbg(&subs->dev->dev, |
592 | "%s: (fmt @%p) no channels\n", __func__, fp); | |
0d9741c0 EZ |
593 | return 0; |
594 | } | |
595 | ||
74c34ca1 | 596 | if (!(fp->formats & pcm_format_to_bits(pcm_format))) { |
0ba41d91 TI |
597 | dev_dbg(&subs->dev->dev, |
598 | "%s: (fmt @%p) no match for format %d\n", __func__, | |
0d9741c0 EZ |
599 | fp, pcm_format); |
600 | return 0; | |
601 | } | |
602 | ||
603 | for (i = 0; i < fp->nr_rates; i++) { | |
604 | if (fp->rate_table[i] == rate) { | |
605 | score++; | |
606 | break; | |
607 | } | |
608 | } | |
609 | if (!score) { | |
0ba41d91 TI |
610 | dev_dbg(&subs->dev->dev, |
611 | "%s: (fmt @%p) no match for rate %d\n", __func__, | |
0d9741c0 EZ |
612 | fp, rate); |
613 | return 0; | |
614 | } | |
615 | ||
616 | if (fp->channels == match->channels) | |
617 | score++; | |
618 | ||
0ba41d91 TI |
619 | dev_dbg(&subs->dev->dev, |
620 | "%s: (fmt @%p) score %d\n", __func__, fp, score); | |
0d9741c0 EZ |
621 | |
622 | return score; | |
623 | } | |
624 | ||
625 | /* | |
626 | * Configure the sync ep using the rate and pcm format of the data ep. | |
627 | */ | |
628 | static int configure_sync_endpoint(struct snd_usb_substream *subs) | |
629 | { | |
630 | int ret; | |
631 | struct audioformat *fp; | |
632 | struct audioformat *sync_fp = NULL; | |
633 | int cur_score = 0; | |
634 | int sync_period_bytes = subs->period_bytes; | |
635 | struct snd_usb_substream *sync_subs = | |
636 | &subs->stream->substream[subs->direction ^ 1]; | |
637 | ||
31be5425 TI |
638 | if (subs->sync_endpoint->type != SND_USB_ENDPOINT_TYPE_DATA || |
639 | !subs->stream) | |
640 | return snd_usb_endpoint_set_params(subs->sync_endpoint, | |
641 | subs->pcm_format, | |
642 | subs->channels, | |
643 | subs->period_bytes, | |
976b6c06 | 644 | 0, 0, |
31be5425 TI |
645 | subs->cur_rate, |
646 | subs->cur_audiofmt, | |
647 | NULL); | |
648 | ||
0d9741c0 EZ |
649 | /* Try to find the best matching audioformat. */ |
650 | list_for_each_entry(fp, &sync_subs->fmt_list, list) { | |
0ba41d91 TI |
651 | int score = match_endpoint_audioformats(subs, |
652 | fp, subs->cur_audiofmt, | |
0d9741c0 EZ |
653 | subs->cur_rate, subs->pcm_format); |
654 | ||
655 | if (score > cur_score) { | |
656 | sync_fp = fp; | |
657 | cur_score = score; | |
658 | } | |
659 | } | |
660 | ||
661 | if (unlikely(sync_fp == NULL)) { | |
0ba41d91 TI |
662 | dev_err(&subs->dev->dev, |
663 | "%s: no valid audioformat for sync ep %x found\n", | |
0d9741c0 EZ |
664 | __func__, sync_subs->ep_num); |
665 | return -EINVAL; | |
666 | } | |
667 | ||
668 | /* | |
669 | * Recalculate the period bytes if channel number differ between | |
670 | * data and sync ep audioformat. | |
671 | */ | |
672 | if (sync_fp->channels != subs->channels) { | |
673 | sync_period_bytes = (subs->period_bytes / subs->channels) * | |
674 | sync_fp->channels; | |
0ba41d91 TI |
675 | dev_dbg(&subs->dev->dev, |
676 | "%s: adjusted sync ep period bytes (%d -> %d)\n", | |
0d9741c0 EZ |
677 | __func__, subs->period_bytes, sync_period_bytes); |
678 | } | |
679 | ||
680 | ret = snd_usb_endpoint_set_params(subs->sync_endpoint, | |
681 | subs->pcm_format, | |
682 | sync_fp->channels, | |
683 | sync_period_bytes, | |
976b6c06 | 684 | 0, 0, |
0d9741c0 EZ |
685 | subs->cur_rate, |
686 | sync_fp, | |
687 | NULL); | |
688 | ||
689 | return ret; | |
690 | } | |
691 | ||
61a70950 DR |
692 | /* |
693 | * configure endpoint params | |
694 | * | |
695 | * called during initial setup and upon resume | |
696 | */ | |
697 | static int configure_endpoint(struct snd_usb_substream *subs) | |
698 | { | |
699 | int ret; | |
700 | ||
61a70950 | 701 | /* format changed */ |
b0db6063 | 702 | stop_endpoints(subs, true); |
61a70950 DR |
703 | ret = snd_usb_endpoint_set_params(subs->data_endpoint, |
704 | subs->pcm_format, | |
705 | subs->channels, | |
706 | subs->period_bytes, | |
976b6c06 AS |
707 | subs->period_frames, |
708 | subs->buffer_periods, | |
61a70950 DR |
709 | subs->cur_rate, |
710 | subs->cur_audiofmt, | |
711 | subs->sync_endpoint); | |
712 | if (ret < 0) | |
978520b7 | 713 | return ret; |
61a70950 DR |
714 | |
715 | if (subs->sync_endpoint) | |
0d9741c0 EZ |
716 | ret = configure_sync_endpoint(subs); |
717 | ||
61a70950 DR |
718 | return ret; |
719 | } | |
720 | ||
3f59aa11 JS |
721 | static int snd_usb_pcm_change_state(struct snd_usb_substream *subs, int state) |
722 | { | |
723 | int ret; | |
724 | ||
725 | if (!subs->str_pd) | |
726 | return 0; | |
727 | ||
728 | ret = snd_usb_power_domain_set(subs->stream->chip, subs->str_pd, state); | |
729 | if (ret < 0) { | |
730 | dev_err(&subs->dev->dev, | |
731 | "Cannot change Power Domain ID: %d to state: %d. Err: %d\n", | |
732 | subs->str_pd->pd_id, state, ret); | |
733 | return ret; | |
734 | } | |
735 | ||
736 | return 0; | |
737 | } | |
738 | ||
739 | int snd_usb_pcm_suspend(struct snd_usb_stream *as) | |
740 | { | |
741 | int ret; | |
742 | ||
743 | ret = snd_usb_pcm_change_state(&as->substream[0], UAC3_PD_STATE_D2); | |
744 | if (ret < 0) | |
745 | return ret; | |
746 | ||
747 | ret = snd_usb_pcm_change_state(&as->substream[1], UAC3_PD_STATE_D2); | |
748 | if (ret < 0) | |
749 | return ret; | |
750 | ||
751 | return 0; | |
752 | } | |
753 | ||
754 | int snd_usb_pcm_resume(struct snd_usb_stream *as) | |
755 | { | |
756 | int ret; | |
757 | ||
a0a4959e | 758 | ret = snd_usb_pcm_change_state(&as->substream[0], UAC3_PD_STATE_D1); |
3f59aa11 JS |
759 | if (ret < 0) |
760 | return ret; | |
761 | ||
a0a4959e | 762 | ret = snd_usb_pcm_change_state(&as->substream[1], UAC3_PD_STATE_D1); |
3f59aa11 JS |
763 | if (ret < 0) |
764 | return ret; | |
765 | ||
766 | return 0; | |
767 | } | |
768 | ||
e5779998 DM |
769 | /* |
770 | * hw_params callback | |
771 | * | |
772 | * allocate a buffer and set the given audio format. | |
773 | * | |
774 | * so far we use a physically linear buffer although packetize transfer | |
775 | * doesn't need a continuous area. | |
776 | * if sg buffer is supported on the later version of alsa, we'll follow | |
777 | * that. | |
778 | */ | |
779 | static int snd_usb_hw_params(struct snd_pcm_substream *substream, | |
780 | struct snd_pcm_hw_params *hw_params) | |
781 | { | |
782 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
783 | struct audioformat *fmt; | |
61a70950 | 784 | int ret; |
e5779998 | 785 | |
f274baa4 TI |
786 | if (snd_usb_use_vmalloc) |
787 | ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, | |
788 | params_buffer_bytes(hw_params)); | |
789 | else | |
790 | ret = snd_pcm_lib_malloc_pages(substream, | |
e5779998 DM |
791 | params_buffer_bytes(hw_params)); |
792 | if (ret < 0) | |
c89178f5 | 793 | return ret; |
e5779998 | 794 | |
61a70950 DR |
795 | subs->pcm_format = params_format(hw_params); |
796 | subs->period_bytes = params_period_bytes(hw_params); | |
976b6c06 AS |
797 | subs->period_frames = params_period_size(hw_params); |
798 | subs->buffer_periods = params_periods(hw_params); | |
61a70950 DR |
799 | subs->channels = params_channels(hw_params); |
800 | subs->cur_rate = params_rate(hw_params); | |
801 | ||
802 | fmt = find_format(subs); | |
e5779998 | 803 | if (!fmt) { |
0ba41d91 TI |
804 | dev_dbg(&subs->dev->dev, |
805 | "cannot set format: format = %#x, rate = %d, channels = %d\n", | |
61a70950 | 806 | subs->pcm_format, subs->cur_rate, subs->channels); |
c89178f5 | 807 | return -EINVAL; |
e5779998 DM |
808 | } |
809 | ||
47ab1545 TI |
810 | ret = snd_usb_lock_shutdown(subs->stream->chip); |
811 | if (ret < 0) | |
c89178f5 | 812 | return ret; |
a0a4959e JS |
813 | |
814 | ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D0); | |
815 | if (ret < 0) | |
816 | goto unlock; | |
817 | ||
47ab1545 | 818 | ret = set_format(subs, fmt); |
978520b7 | 819 | if (ret < 0) |
a0a4959e | 820 | goto unlock; |
e5779998 | 821 | |
61a70950 DR |
822 | subs->interface = fmt->iface; |
823 | subs->altset_idx = fmt->altset_idx; | |
384dc085 | 824 | subs->need_setup_ep = true; |
715a1705 | 825 | |
a0a4959e JS |
826 | unlock: |
827 | snd_usb_unlock_shutdown(subs->stream->chip); | |
828 | return ret; | |
e5779998 DM |
829 | } |
830 | ||
831 | /* | |
832 | * hw_free callback | |
833 | * | |
834 | * reset the audio format and release the buffer | |
835 | */ | |
836 | static int snd_usb_hw_free(struct snd_pcm_substream *substream) | |
837 | { | |
838 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
839 | ||
840 | subs->cur_audiofmt = NULL; | |
841 | subs->cur_rate = 0; | |
842 | subs->period_bytes = 0; | |
47ab1545 | 843 | if (!snd_usb_lock_shutdown(subs->stream->chip)) { |
a9bb3626 | 844 | stop_endpoints(subs, true); |
26de5d0a EZ |
845 | snd_usb_endpoint_deactivate(subs->sync_endpoint); |
846 | snd_usb_endpoint_deactivate(subs->data_endpoint); | |
47ab1545 | 847 | snd_usb_unlock_shutdown(subs->stream->chip); |
978520b7 | 848 | } |
f274baa4 TI |
849 | |
850 | if (snd_usb_use_vmalloc) | |
851 | return snd_pcm_lib_free_vmalloc_buffer(substream); | |
852 | else | |
853 | return snd_pcm_lib_free_pages(substream); | |
e5779998 DM |
854 | } |
855 | ||
856 | /* | |
857 | * prepare callback | |
858 | * | |
859 | * only a few subtle things... | |
860 | */ | |
861 | static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) | |
862 | { | |
863 | struct snd_pcm_runtime *runtime = substream->runtime; | |
864 | struct snd_usb_substream *subs = runtime->private_data; | |
61a70950 DR |
865 | struct usb_host_interface *alts; |
866 | struct usb_interface *iface; | |
867 | int ret; | |
e5779998 DM |
868 | |
869 | if (! subs->cur_audiofmt) { | |
0ba41d91 | 870 | dev_err(&subs->dev->dev, "no format is specified!\n"); |
e5779998 DM |
871 | return -ENXIO; |
872 | } | |
873 | ||
47ab1545 TI |
874 | ret = snd_usb_lock_shutdown(subs->stream->chip); |
875 | if (ret < 0) | |
876 | return ret; | |
978520b7 TI |
877 | if (snd_BUG_ON(!subs->data_endpoint)) { |
878 | ret = -EIO; | |
879 | goto unlock; | |
880 | } | |
edcd3633 | 881 | |
f58161ba TI |
882 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); |
883 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
884 | ||
a0a4959e JS |
885 | ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D0); |
886 | if (ret < 0) | |
887 | goto unlock; | |
888 | ||
61a70950 DR |
889 | ret = set_format(subs, subs->cur_audiofmt); |
890 | if (ret < 0) | |
978520b7 | 891 | goto unlock; |
61a70950 | 892 | |
384dc085 | 893 | if (subs->need_setup_ep) { |
1e2e3fe4 DG |
894 | |
895 | iface = usb_ifnum_to_if(subs->dev, subs->cur_audiofmt->iface); | |
896 | alts = &iface->altsetting[subs->cur_audiofmt->altset_idx]; | |
897 | ret = snd_usb_init_sample_rate(subs->stream->chip, | |
898 | subs->cur_audiofmt->iface, | |
899 | alts, | |
900 | subs->cur_audiofmt, | |
901 | subs->cur_rate); | |
902 | if (ret < 0) | |
903 | goto unlock; | |
904 | ||
384dc085 TI |
905 | ret = configure_endpoint(subs); |
906 | if (ret < 0) | |
978520b7 | 907 | goto unlock; |
384dc085 TI |
908 | subs->need_setup_ep = false; |
909 | } | |
61a70950 | 910 | |
e5779998 | 911 | /* some unit conversions in runtime */ |
edcd3633 DM |
912 | subs->data_endpoint->maxframesize = |
913 | bytes_to_frames(runtime, subs->data_endpoint->maxpacksize); | |
914 | subs->data_endpoint->curframesize = | |
915 | bytes_to_frames(runtime, subs->data_endpoint->curpacksize); | |
e5779998 DM |
916 | |
917 | /* reset the pointer */ | |
918 | subs->hwptr_done = 0; | |
919 | subs->transfer_done = 0; | |
294c4fb8 PLB |
920 | subs->last_delay = 0; |
921 | subs->last_frame_number = 0; | |
e5779998 DM |
922 | runtime->delay = 0; |
923 | ||
edcd3633 DM |
924 | /* for playback, submit the URBs now; otherwise, the first hwptr_done |
925 | * updates for all URBs would happen at the same time when starting */ | |
926 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) | |
1d0f9530 | 927 | ret = start_endpoints(subs); |
edcd3633 | 928 | |
978520b7 | 929 | unlock: |
47ab1545 | 930 | snd_usb_unlock_shutdown(subs->stream->chip); |
978520b7 | 931 | return ret; |
e5779998 DM |
932 | } |
933 | ||
aaffbf78 | 934 | static const struct snd_pcm_hardware snd_usb_hardware = |
e5779998 DM |
935 | { |
936 | .info = SNDRV_PCM_INFO_MMAP | | |
937 | SNDRV_PCM_INFO_MMAP_VALID | | |
938 | SNDRV_PCM_INFO_BATCH | | |
939 | SNDRV_PCM_INFO_INTERLEAVED | | |
940 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
941 | SNDRV_PCM_INFO_PAUSE, | |
942 | .buffer_bytes_max = 1024 * 1024, | |
943 | .period_bytes_min = 64, | |
944 | .period_bytes_max = 512 * 1024, | |
945 | .periods_min = 2, | |
946 | .periods_max = 1024, | |
947 | }; | |
948 | ||
949 | static int hw_check_valid_format(struct snd_usb_substream *subs, | |
950 | struct snd_pcm_hw_params *params, | |
951 | struct audioformat *fp) | |
952 | { | |
953 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
954 | struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
955 | struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
956 | struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
015eb0b0 | 957 | struct snd_mask check_fmts; |
e5779998 DM |
958 | unsigned int ptime; |
959 | ||
960 | /* check the format */ | |
015eb0b0 CL |
961 | snd_mask_none(&check_fmts); |
962 | check_fmts.bits[0] = (u32)fp->formats; | |
963 | check_fmts.bits[1] = (u32)(fp->formats >> 32); | |
964 | snd_mask_intersect(&check_fmts, fmts); | |
965 | if (snd_mask_empty(&check_fmts)) { | |
e5779998 DM |
966 | hwc_debug(" > check: no supported format %d\n", fp->format); |
967 | return 0; | |
968 | } | |
969 | /* check the channels */ | |
970 | if (fp->channels < ct->min || fp->channels > ct->max) { | |
971 | hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); | |
972 | return 0; | |
973 | } | |
974 | /* check the rate is within the range */ | |
975 | if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { | |
976 | hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); | |
977 | return 0; | |
978 | } | |
979 | if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { | |
980 | hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); | |
981 | return 0; | |
982 | } | |
983 | /* check whether the period time is >= the data packet interval */ | |
978520b7 | 984 | if (subs->speed != USB_SPEED_FULL) { |
e5779998 DM |
985 | ptime = 125 * (1 << fp->datainterval); |
986 | if (ptime > pt->max || (ptime == pt->max && pt->openmax)) { | |
987 | hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max); | |
988 | return 0; | |
989 | } | |
990 | } | |
991 | return 1; | |
992 | } | |
993 | ||
994 | static int hw_rule_rate(struct snd_pcm_hw_params *params, | |
995 | struct snd_pcm_hw_rule *rule) | |
996 | { | |
997 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 998 | struct audioformat *fp; |
e5779998 DM |
999 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
1000 | unsigned int rmin, rmax; | |
1001 | int changed; | |
1002 | ||
1003 | hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); | |
1004 | changed = 0; | |
1005 | rmin = rmax = 0; | |
88766f04 | 1006 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1007 | if (!hw_check_valid_format(subs, params, fp)) |
1008 | continue; | |
1009 | if (changed++) { | |
1010 | if (rmin > fp->rate_min) | |
1011 | rmin = fp->rate_min; | |
1012 | if (rmax < fp->rate_max) | |
1013 | rmax = fp->rate_max; | |
1014 | } else { | |
1015 | rmin = fp->rate_min; | |
1016 | rmax = fp->rate_max; | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | if (!changed) { | |
1021 | hwc_debug(" --> get empty\n"); | |
1022 | it->empty = 1; | |
1023 | return -EINVAL; | |
1024 | } | |
1025 | ||
1026 | changed = 0; | |
1027 | if (it->min < rmin) { | |
1028 | it->min = rmin; | |
1029 | it->openmin = 0; | |
1030 | changed = 1; | |
1031 | } | |
1032 | if (it->max > rmax) { | |
1033 | it->max = rmax; | |
1034 | it->openmax = 0; | |
1035 | changed = 1; | |
1036 | } | |
1037 | if (snd_interval_checkempty(it)) { | |
1038 | it->empty = 1; | |
1039 | return -EINVAL; | |
1040 | } | |
1041 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
1042 | return changed; | |
1043 | } | |
1044 | ||
1045 | ||
1046 | static int hw_rule_channels(struct snd_pcm_hw_params *params, | |
1047 | struct snd_pcm_hw_rule *rule) | |
1048 | { | |
1049 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 1050 | struct audioformat *fp; |
e5779998 DM |
1051 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
1052 | unsigned int rmin, rmax; | |
1053 | int changed; | |
1054 | ||
1055 | hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); | |
1056 | changed = 0; | |
1057 | rmin = rmax = 0; | |
88766f04 | 1058 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1059 | if (!hw_check_valid_format(subs, params, fp)) |
1060 | continue; | |
1061 | if (changed++) { | |
1062 | if (rmin > fp->channels) | |
1063 | rmin = fp->channels; | |
1064 | if (rmax < fp->channels) | |
1065 | rmax = fp->channels; | |
1066 | } else { | |
1067 | rmin = fp->channels; | |
1068 | rmax = fp->channels; | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | if (!changed) { | |
1073 | hwc_debug(" --> get empty\n"); | |
1074 | it->empty = 1; | |
1075 | return -EINVAL; | |
1076 | } | |
1077 | ||
1078 | changed = 0; | |
1079 | if (it->min < rmin) { | |
1080 | it->min = rmin; | |
1081 | it->openmin = 0; | |
1082 | changed = 1; | |
1083 | } | |
1084 | if (it->max > rmax) { | |
1085 | it->max = rmax; | |
1086 | it->openmax = 0; | |
1087 | changed = 1; | |
1088 | } | |
1089 | if (snd_interval_checkempty(it)) { | |
1090 | it->empty = 1; | |
1091 | return -EINVAL; | |
1092 | } | |
1093 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
1094 | return changed; | |
1095 | } | |
1096 | ||
1097 | static int hw_rule_format(struct snd_pcm_hw_params *params, | |
1098 | struct snd_pcm_hw_rule *rule) | |
1099 | { | |
1100 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 1101 | struct audioformat *fp; |
e5779998 DM |
1102 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
1103 | u64 fbits; | |
1104 | u32 oldbits[2]; | |
1105 | int changed; | |
1106 | ||
1107 | hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); | |
1108 | fbits = 0; | |
88766f04 | 1109 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1110 | if (!hw_check_valid_format(subs, params, fp)) |
1111 | continue; | |
015eb0b0 | 1112 | fbits |= fp->formats; |
e5779998 DM |
1113 | } |
1114 | ||
1115 | oldbits[0] = fmt->bits[0]; | |
1116 | oldbits[1] = fmt->bits[1]; | |
1117 | fmt->bits[0] &= (u32)fbits; | |
1118 | fmt->bits[1] &= (u32)(fbits >> 32); | |
1119 | if (!fmt->bits[0] && !fmt->bits[1]) { | |
1120 | hwc_debug(" --> get empty\n"); | |
1121 | return -EINVAL; | |
1122 | } | |
1123 | changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); | |
1124 | hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); | |
1125 | return changed; | |
1126 | } | |
1127 | ||
1128 | static int hw_rule_period_time(struct snd_pcm_hw_params *params, | |
1129 | struct snd_pcm_hw_rule *rule) | |
1130 | { | |
1131 | struct snd_usb_substream *subs = rule->private; | |
1132 | struct audioformat *fp; | |
1133 | struct snd_interval *it; | |
1134 | unsigned char min_datainterval; | |
1135 | unsigned int pmin; | |
1136 | int changed; | |
1137 | ||
1138 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
1139 | hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); | |
1140 | min_datainterval = 0xff; | |
1141 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
1142 | if (!hw_check_valid_format(subs, params, fp)) | |
1143 | continue; | |
1144 | min_datainterval = min(min_datainterval, fp->datainterval); | |
1145 | } | |
1146 | if (min_datainterval == 0xff) { | |
a7ce2e0d | 1147 | hwc_debug(" --> get empty\n"); |
e5779998 DM |
1148 | it->empty = 1; |
1149 | return -EINVAL; | |
1150 | } | |
1151 | pmin = 125 * (1 << min_datainterval); | |
1152 | changed = 0; | |
1153 | if (it->min < pmin) { | |
1154 | it->min = pmin; | |
1155 | it->openmin = 0; | |
1156 | changed = 1; | |
1157 | } | |
1158 | if (snd_interval_checkempty(it)) { | |
1159 | it->empty = 1; | |
1160 | return -EINVAL; | |
1161 | } | |
1162 | hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed); | |
1163 | return changed; | |
1164 | } | |
1165 | ||
1166 | /* | |
1167 | * If the device supports unusual bit rates, does the request meet these? | |
1168 | */ | |
1169 | static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, | |
1170 | struct snd_usb_substream *subs) | |
1171 | { | |
1172 | struct audioformat *fp; | |
0717d0f5 | 1173 | int *rate_list; |
e5779998 DM |
1174 | int count = 0, needs_knot = 0; |
1175 | int err; | |
1176 | ||
5cd5d7c4 CL |
1177 | kfree(subs->rate_list.list); |
1178 | subs->rate_list.list = NULL; | |
1179 | ||
e5779998 DM |
1180 | list_for_each_entry(fp, &subs->fmt_list, list) { |
1181 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) | |
1182 | return 0; | |
1183 | count += fp->nr_rates; | |
1184 | if (fp->rates & SNDRV_PCM_RATE_KNOT) | |
1185 | needs_knot = 1; | |
1186 | } | |
1187 | if (!needs_knot) | |
1188 | return 0; | |
1189 | ||
0717d0f5 | 1190 | subs->rate_list.list = rate_list = |
6da2ec56 | 1191 | kmalloc_array(count, sizeof(int), GFP_KERNEL); |
8a8d56b2 JJ |
1192 | if (!subs->rate_list.list) |
1193 | return -ENOMEM; | |
1194 | subs->rate_list.count = count; | |
e5779998 DM |
1195 | subs->rate_list.mask = 0; |
1196 | count = 0; | |
1197 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
1198 | int i; | |
1199 | for (i = 0; i < fp->nr_rates; i++) | |
0717d0f5 | 1200 | rate_list[count++] = fp->rate_table[i]; |
e5779998 DM |
1201 | } |
1202 | err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1203 | &subs->rate_list); | |
1204 | if (err < 0) | |
1205 | return err; | |
1206 | ||
1207 | return 0; | |
1208 | } | |
1209 | ||
1210 | ||
1211 | /* | |
1212 | * set up the runtime hardware information. | |
1213 | */ | |
1214 | ||
1215 | static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) | |
1216 | { | |
88766f04 | 1217 | struct audioformat *fp; |
e5779998 DM |
1218 | unsigned int pt, ptmin; |
1219 | int param_period_time_if_needed; | |
1220 | int err; | |
1221 | ||
1222 | runtime->hw.formats = subs->formats; | |
1223 | ||
1224 | runtime->hw.rate_min = 0x7fffffff; | |
1225 | runtime->hw.rate_max = 0; | |
1226 | runtime->hw.channels_min = 256; | |
1227 | runtime->hw.channels_max = 0; | |
1228 | runtime->hw.rates = 0; | |
1229 | ptmin = UINT_MAX; | |
1230 | /* check min/max rates and channels */ | |
88766f04 | 1231 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1232 | runtime->hw.rates |= fp->rates; |
1233 | if (runtime->hw.rate_min > fp->rate_min) | |
1234 | runtime->hw.rate_min = fp->rate_min; | |
1235 | if (runtime->hw.rate_max < fp->rate_max) | |
1236 | runtime->hw.rate_max = fp->rate_max; | |
1237 | if (runtime->hw.channels_min > fp->channels) | |
1238 | runtime->hw.channels_min = fp->channels; | |
1239 | if (runtime->hw.channels_max < fp->channels) | |
1240 | runtime->hw.channels_max = fp->channels; | |
1241 | if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) { | |
1242 | /* FIXME: there might be more than one audio formats... */ | |
1243 | runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = | |
1244 | fp->frame_size; | |
1245 | } | |
1246 | pt = 125 * (1 << fp->datainterval); | |
1247 | ptmin = min(ptmin, pt); | |
1248 | } | |
1249 | ||
1250 | param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME; | |
978520b7 | 1251 | if (subs->speed == USB_SPEED_FULL) |
e5779998 DM |
1252 | /* full speed devices have fixed data packet interval */ |
1253 | ptmin = 1000; | |
1254 | if (ptmin == 1000) | |
1255 | /* if period time doesn't go below 1 ms, no rules needed */ | |
1256 | param_period_time_if_needed = -1; | |
e92be814 TI |
1257 | |
1258 | err = snd_pcm_hw_constraint_minmax(runtime, | |
1259 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1260 | ptmin, UINT_MAX); | |
1261 | if (err < 0) | |
1262 | return err; | |
1263 | ||
1264 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1265 | hw_rule_rate, subs, | |
1266 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1267 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1268 | param_period_time_if_needed, | |
1269 | -1); | |
1270 | if (err < 0) | |
1271 | return err; | |
1272 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1273 | hw_rule_channels, subs, | |
1274 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1275 | SNDRV_PCM_HW_PARAM_RATE, | |
1276 | param_period_time_if_needed, | |
1277 | -1); | |
1278 | if (err < 0) | |
1279 | return err; | |
1280 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1281 | hw_rule_format, subs, | |
1282 | SNDRV_PCM_HW_PARAM_RATE, | |
1283 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1284 | param_period_time_if_needed, | |
1285 | -1); | |
1286 | if (err < 0) | |
1287 | return err; | |
e5779998 DM |
1288 | if (param_period_time_if_needed >= 0) { |
1289 | err = snd_pcm_hw_rule_add(runtime, 0, | |
1290 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1291 | hw_rule_period_time, subs, | |
1292 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1293 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1294 | SNDRV_PCM_HW_PARAM_RATE, | |
1295 | -1); | |
1296 | if (err < 0) | |
e92be814 | 1297 | return err; |
e5779998 | 1298 | } |
e92be814 TI |
1299 | err = snd_usb_pcm_check_knot(runtime, subs); |
1300 | if (err < 0) | |
1301 | return err; | |
88a8516a | 1302 | |
e92be814 | 1303 | return snd_usb_autoresume(subs->stream->chip); |
e5779998 DM |
1304 | } |
1305 | ||
6fddc797 | 1306 | static int snd_usb_pcm_open(struct snd_pcm_substream *substream) |
e5779998 | 1307 | { |
6fddc797 | 1308 | int direction = substream->stream; |
e5779998 DM |
1309 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1310 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1311 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1312 | ||
1313 | subs->interface = -1; | |
e11b4e0e | 1314 | subs->altset_idx = 0; |
e5779998 DM |
1315 | runtime->hw = snd_usb_hardware; |
1316 | runtime->private_data = subs; | |
1317 | subs->pcm_substream = substream; | |
88a8516a | 1318 | /* runtime PM is also done there */ |
d24f5061 DM |
1319 | |
1320 | /* initialize DSD/DOP context */ | |
1321 | subs->dsd_dop.byte_idx = 0; | |
1322 | subs->dsd_dop.channel = 0; | |
1323 | subs->dsd_dop.marker = 1; | |
1324 | ||
c89178f5 | 1325 | return setup_hw_info(runtime, subs); |
e5779998 DM |
1326 | } |
1327 | ||
6fddc797 | 1328 | static int snd_usb_pcm_close(struct snd_pcm_substream *substream) |
e5779998 | 1329 | { |
6fddc797 | 1330 | int direction = substream->stream; |
e5779998 DM |
1331 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1332 | struct snd_usb_substream *subs = &as->substream[direction]; | |
a0a4959e | 1333 | int ret; |
e5779998 | 1334 | |
b0db6063 | 1335 | stop_endpoints(subs, true); |
68e67f40 | 1336 | |
8a463225 TI |
1337 | if (!as->chip->keep_iface && |
1338 | subs->interface >= 0 && | |
47ab1545 | 1339 | !snd_usb_lock_shutdown(subs->stream->chip)) { |
68e67f40 DM |
1340 | usb_set_interface(subs->dev, subs->interface, 0); |
1341 | subs->interface = -1; | |
a0a4959e | 1342 | ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D1); |
47ab1545 | 1343 | snd_usb_unlock_shutdown(subs->stream->chip); |
a0a4959e JS |
1344 | if (ret < 0) |
1345 | return ret; | |
68e67f40 DM |
1346 | } |
1347 | ||
e5779998 | 1348 | subs->pcm_substream = NULL; |
88a8516a | 1349 | snd_usb_autosuspend(subs->stream->chip); |
edcd3633 | 1350 | |
68e67f40 | 1351 | return 0; |
edcd3633 DM |
1352 | } |
1353 | ||
1354 | /* Since a URB can handle only a single linear buffer, we must use double | |
1355 | * buffering when the data to be transferred overflows the buffer boundary. | |
1356 | * To avoid inconsistencies when updating hwptr_done, we use double buffering | |
1357 | * for all URBs. | |
1358 | */ | |
1359 | static void retire_capture_urb(struct snd_usb_substream *subs, | |
1360 | struct urb *urb) | |
1361 | { | |
1362 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1363 | unsigned int stride, frames, bytes, oldptr; | |
1364 | int i, period_elapsed = 0; | |
1365 | unsigned long flags; | |
1366 | unsigned char *cp; | |
e4cc6153 PLB |
1367 | int current_frame_number; |
1368 | ||
1369 | /* read frame number here, update pointer in critical section */ | |
1370 | current_frame_number = usb_get_current_frame_number(subs->dev); | |
edcd3633 DM |
1371 | |
1372 | stride = runtime->frame_bits >> 3; | |
1373 | ||
1374 | for (i = 0; i < urb->number_of_packets; i++) { | |
1539d4f8 | 1375 | cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset + subs->pkt_offset_adj; |
edcd3633 | 1376 | if (urb->iso_frame_desc[i].status && printk_ratelimit()) { |
0ba41d91 TI |
1377 | dev_dbg(&subs->dev->dev, "frame %d active: %d\n", |
1378 | i, urb->iso_frame_desc[i].status); | |
edcd3633 DM |
1379 | // continue; |
1380 | } | |
1381 | bytes = urb->iso_frame_desc[i].actual_length; | |
1382 | frames = bytes / stride; | |
1383 | if (!subs->txfr_quirk) | |
1384 | bytes = frames * stride; | |
1385 | if (bytes % (runtime->sample_bits >> 3) != 0) { | |
edcd3633 | 1386 | int oldbytes = bytes; |
edcd3633 | 1387 | bytes = frames * stride; |
377a879d | 1388 | dev_warn_ratelimited(&subs->dev->dev, |
0ba41d91 | 1389 | "Corrected urb data len. %d->%d\n", |
edcd3633 DM |
1390 | oldbytes, bytes); |
1391 | } | |
1392 | /* update the current pointer */ | |
1393 | spin_lock_irqsave(&subs->lock, flags); | |
1394 | oldptr = subs->hwptr_done; | |
1395 | subs->hwptr_done += bytes; | |
1396 | if (subs->hwptr_done >= runtime->buffer_size * stride) | |
1397 | subs->hwptr_done -= runtime->buffer_size * stride; | |
1398 | frames = (bytes + (oldptr % stride)) / stride; | |
1399 | subs->transfer_done += frames; | |
1400 | if (subs->transfer_done >= runtime->period_size) { | |
1401 | subs->transfer_done -= runtime->period_size; | |
1402 | period_elapsed = 1; | |
1403 | } | |
e4cc6153 PLB |
1404 | /* capture delay is by construction limited to one URB, |
1405 | * reset delays here | |
1406 | */ | |
1407 | runtime->delay = subs->last_delay = 0; | |
1408 | ||
1409 | /* realign last_frame_number */ | |
1410 | subs->last_frame_number = current_frame_number; | |
1411 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1412 | ||
edcd3633 DM |
1413 | spin_unlock_irqrestore(&subs->lock, flags); |
1414 | /* copy a data chunk */ | |
1415 | if (oldptr + bytes > runtime->buffer_size * stride) { | |
1416 | unsigned int bytes1 = | |
1417 | runtime->buffer_size * stride - oldptr; | |
1418 | memcpy(runtime->dma_area + oldptr, cp, bytes1); | |
1419 | memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1); | |
1420 | } else { | |
1421 | memcpy(runtime->dma_area + oldptr, cp, bytes); | |
1422 | } | |
1423 | } | |
1424 | ||
1425 | if (period_elapsed) | |
1426 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1427 | } | |
1428 | ||
d24f5061 DM |
1429 | static inline void fill_playback_urb_dsd_dop(struct snd_usb_substream *subs, |
1430 | struct urb *urb, unsigned int bytes) | |
1431 | { | |
1432 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1433 | unsigned int stride = runtime->frame_bits >> 3; | |
1434 | unsigned int dst_idx = 0; | |
1435 | unsigned int src_idx = subs->hwptr_done; | |
1436 | unsigned int wrap = runtime->buffer_size * stride; | |
1437 | u8 *dst = urb->transfer_buffer; | |
1438 | u8 *src = runtime->dma_area; | |
1439 | u8 marker[] = { 0x05, 0xfa }; | |
1440 | ||
1441 | /* | |
1442 | * The DSP DOP format defines a way to transport DSD samples over | |
1443 | * normal PCM data endpoints. It requires stuffing of marker bytes | |
1444 | * (0x05 and 0xfa, alternating per sample frame), and then expects | |
1445 | * 2 additional bytes of actual payload. The whole frame is stored | |
1446 | * LSB. | |
1447 | * | |
1448 | * Hence, for a stereo transport, the buffer layout looks like this, | |
1449 | * where L refers to left channel samples and R to right. | |
1450 | * | |
1451 | * L1 L2 0x05 R1 R2 0x05 L3 L4 0xfa R3 R4 0xfa | |
1452 | * L5 L6 0x05 R5 R6 0x05 L7 L8 0xfa R7 R8 0xfa | |
1453 | * ..... | |
1454 | * | |
1455 | */ | |
1456 | ||
1457 | while (bytes--) { | |
1458 | if (++subs->dsd_dop.byte_idx == 3) { | |
1459 | /* frame boundary? */ | |
1460 | dst[dst_idx++] = marker[subs->dsd_dop.marker]; | |
1461 | src_idx += 2; | |
1462 | subs->dsd_dop.byte_idx = 0; | |
1463 | ||
1464 | if (++subs->dsd_dop.channel % runtime->channels == 0) { | |
1465 | /* alternate the marker */ | |
1466 | subs->dsd_dop.marker++; | |
1467 | subs->dsd_dop.marker %= ARRAY_SIZE(marker); | |
1468 | subs->dsd_dop.channel = 0; | |
1469 | } | |
1470 | } else { | |
1471 | /* stuff the DSD payload */ | |
1472 | int idx = (src_idx + subs->dsd_dop.byte_idx - 1) % wrap; | |
44dcbbb1 DM |
1473 | |
1474 | if (subs->cur_audiofmt->dsd_bitrev) | |
1475 | dst[dst_idx++] = bitrev8(src[idx]); | |
1476 | else | |
1477 | dst[dst_idx++] = src[idx]; | |
1478 | ||
d24f5061 DM |
1479 | subs->hwptr_done++; |
1480 | } | |
1481 | } | |
4c4e4391 RW |
1482 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1483 | subs->hwptr_done -= runtime->buffer_size * stride; | |
d24f5061 DM |
1484 | } |
1485 | ||
b97a9369 RW |
1486 | static void copy_to_urb(struct snd_usb_substream *subs, struct urb *urb, |
1487 | int offset, int stride, unsigned int bytes) | |
07a40c2f RW |
1488 | { |
1489 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1490 | ||
1491 | if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { | |
1492 | /* err, the transferred area goes over buffer boundary. */ | |
1493 | unsigned int bytes1 = | |
1494 | runtime->buffer_size * stride - subs->hwptr_done; | |
b97a9369 | 1495 | memcpy(urb->transfer_buffer + offset, |
07a40c2f | 1496 | runtime->dma_area + subs->hwptr_done, bytes1); |
b97a9369 | 1497 | memcpy(urb->transfer_buffer + offset + bytes1, |
07a40c2f RW |
1498 | runtime->dma_area, bytes - bytes1); |
1499 | } else { | |
b97a9369 | 1500 | memcpy(urb->transfer_buffer + offset, |
07a40c2f RW |
1501 | runtime->dma_area + subs->hwptr_done, bytes); |
1502 | } | |
1503 | subs->hwptr_done += bytes; | |
4c4e4391 RW |
1504 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1505 | subs->hwptr_done -= runtime->buffer_size * stride; | |
07a40c2f RW |
1506 | } |
1507 | ||
e0570446 RW |
1508 | static unsigned int copy_to_urb_quirk(struct snd_usb_substream *subs, |
1509 | struct urb *urb, int stride, | |
1510 | unsigned int bytes) | |
1511 | { | |
1512 | __le32 packet_length; | |
1513 | int i; | |
1514 | ||
1515 | /* Put __le32 length descriptor at start of each packet. */ | |
1516 | for (i = 0; i < urb->number_of_packets; i++) { | |
1517 | unsigned int length = urb->iso_frame_desc[i].length; | |
1518 | unsigned int offset = urb->iso_frame_desc[i].offset; | |
1519 | ||
1520 | packet_length = cpu_to_le32(length); | |
1521 | offset += i * sizeof(packet_length); | |
1522 | urb->iso_frame_desc[i].offset = offset; | |
1523 | urb->iso_frame_desc[i].length += sizeof(packet_length); | |
1524 | memcpy(urb->transfer_buffer + offset, | |
1525 | &packet_length, sizeof(packet_length)); | |
1526 | copy_to_urb(subs, urb, offset + sizeof(packet_length), | |
1527 | stride, length); | |
1528 | } | |
1529 | /* Adjust transfer size accordingly. */ | |
1530 | bytes += urb->number_of_packets * sizeof(packet_length); | |
1531 | return bytes; | |
1532 | } | |
1533 | ||
edcd3633 DM |
1534 | static void prepare_playback_urb(struct snd_usb_substream *subs, |
1535 | struct urb *urb) | |
1536 | { | |
1537 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
245baf98 | 1538 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
edcd3633 DM |
1539 | struct snd_urb_ctx *ctx = urb->context; |
1540 | unsigned int counts, frames, bytes; | |
1541 | int i, stride, period_elapsed = 0; | |
1542 | unsigned long flags; | |
1543 | ||
1544 | stride = runtime->frame_bits >> 3; | |
1545 | ||
1546 | frames = 0; | |
1547 | urb->number_of_packets = 0; | |
1548 | spin_lock_irqsave(&subs->lock, flags); | |
976b6c06 | 1549 | subs->frame_limit += ep->max_urb_frames; |
edcd3633 | 1550 | for (i = 0; i < ctx->packets; i++) { |
245baf98 DM |
1551 | if (ctx->packet_size[i]) |
1552 | counts = ctx->packet_size[i]; | |
1553 | else | |
1554 | counts = snd_usb_endpoint_next_packet_size(ep); | |
1555 | ||
edcd3633 | 1556 | /* set up descriptor */ |
8a2a74d2 DM |
1557 | urb->iso_frame_desc[i].offset = frames * ep->stride; |
1558 | urb->iso_frame_desc[i].length = counts * ep->stride; | |
edcd3633 DM |
1559 | frames += counts; |
1560 | urb->number_of_packets++; | |
1561 | subs->transfer_done += counts; | |
1562 | if (subs->transfer_done >= runtime->period_size) { | |
1563 | subs->transfer_done -= runtime->period_size; | |
976b6c06 | 1564 | subs->frame_limit = 0; |
edcd3633 DM |
1565 | period_elapsed = 1; |
1566 | if (subs->fmt_type == UAC_FORMAT_TYPE_II) { | |
1567 | if (subs->transfer_done > 0) { | |
1568 | /* FIXME: fill-max mode is not | |
1569 | * supported yet */ | |
1570 | frames -= subs->transfer_done; | |
1571 | counts -= subs->transfer_done; | |
1572 | urb->iso_frame_desc[i].length = | |
8a2a74d2 | 1573 | counts * ep->stride; |
edcd3633 DM |
1574 | subs->transfer_done = 0; |
1575 | } | |
1576 | i++; | |
1577 | if (i < ctx->packets) { | |
1578 | /* add a transfer delimiter */ | |
1579 | urb->iso_frame_desc[i].offset = | |
8a2a74d2 | 1580 | frames * ep->stride; |
edcd3633 DM |
1581 | urb->iso_frame_desc[i].length = 0; |
1582 | urb->number_of_packets++; | |
1583 | } | |
1584 | break; | |
1585 | } | |
1586 | } | |
976b6c06 AS |
1587 | /* finish at the period boundary or after enough frames */ |
1588 | if ((period_elapsed || | |
1589 | subs->transfer_done >= subs->frame_limit) && | |
1590 | !snd_usb_endpoint_implicit_feedback_sink(ep)) | |
edcd3633 DM |
1591 | break; |
1592 | } | |
8a2a74d2 | 1593 | bytes = frames * ep->stride; |
d24f5061 DM |
1594 | |
1595 | if (unlikely(subs->pcm_format == SNDRV_PCM_FORMAT_DSD_U16_LE && | |
1596 | subs->cur_audiofmt->dsd_dop)) { | |
1597 | fill_playback_urb_dsd_dop(subs, urb, bytes); | |
44dcbbb1 DM |
1598 | } else if (unlikely(subs->pcm_format == SNDRV_PCM_FORMAT_DSD_U8 && |
1599 | subs->cur_audiofmt->dsd_bitrev)) { | |
1600 | /* bit-reverse the bytes */ | |
1601 | u8 *buf = urb->transfer_buffer; | |
1602 | for (i = 0; i < bytes; i++) { | |
1603 | int idx = (subs->hwptr_done + i) | |
1604 | % (runtime->buffer_size * stride); | |
1605 | buf[i] = bitrev8(runtime->dma_area[idx]); | |
1606 | } | |
1607 | ||
1608 | subs->hwptr_done += bytes; | |
4c4e4391 RW |
1609 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1610 | subs->hwptr_done -= runtime->buffer_size * stride; | |
edcd3633 | 1611 | } else { |
d24f5061 | 1612 | /* usual PCM */ |
e0570446 RW |
1613 | if (!subs->tx_length_quirk) |
1614 | copy_to_urb(subs, urb, 0, stride, bytes); | |
1615 | else | |
1616 | bytes = copy_to_urb_quirk(subs, urb, stride, bytes); | |
1617 | /* bytes is now amount of outgoing data */ | |
edcd3633 | 1618 | } |
d24f5061 | 1619 | |
fbcfbf5f DM |
1620 | /* update delay with exact number of samples queued */ |
1621 | runtime->delay = subs->last_delay; | |
edcd3633 | 1622 | runtime->delay += frames; |
fbcfbf5f DM |
1623 | subs->last_delay = runtime->delay; |
1624 | ||
1625 | /* realign last_frame_number */ | |
1626 | subs->last_frame_number = usb_get_current_frame_number(subs->dev); | |
1627 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1628 | ||
ea33d359 PLB |
1629 | if (subs->trigger_tstamp_pending_update) { |
1630 | /* this is the first actual URB submitted, | |
1631 | * update trigger timestamp to reflect actual start time | |
1632 | */ | |
1633 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); | |
1634 | subs->trigger_tstamp_pending_update = false; | |
1635 | } | |
1636 | ||
edcd3633 DM |
1637 | spin_unlock_irqrestore(&subs->lock, flags); |
1638 | urb->transfer_buffer_length = bytes; | |
1639 | if (period_elapsed) | |
1640 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1641 | } | |
1642 | ||
1643 | /* | |
1644 | * process after playback data complete | |
1645 | * - decrease the delay count again | |
1646 | */ | |
1647 | static void retire_playback_urb(struct snd_usb_substream *subs, | |
1648 | struct urb *urb) | |
1649 | { | |
1650 | unsigned long flags; | |
1651 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
8a2a74d2 DM |
1652 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
1653 | int processed = urb->transfer_buffer_length / ep->stride; | |
fbcfbf5f | 1654 | int est_delay; |
edcd3633 | 1655 | |
1213a205 TI |
1656 | /* ignore the delay accounting when procssed=0 is given, i.e. |
1657 | * silent payloads are procssed before handling the actual data | |
1658 | */ | |
1659 | if (!processed) | |
1660 | return; | |
1661 | ||
edcd3633 | 1662 | spin_lock_irqsave(&subs->lock, flags); |
48779a0b TI |
1663 | if (!subs->last_delay) |
1664 | goto out; /* short path */ | |
1665 | ||
fbcfbf5f DM |
1666 | est_delay = snd_usb_pcm_delay(subs, runtime->rate); |
1667 | /* update delay with exact number of samples played */ | |
1668 | if (processed > subs->last_delay) | |
1669 | subs->last_delay = 0; | |
edcd3633 | 1670 | else |
fbcfbf5f DM |
1671 | subs->last_delay -= processed; |
1672 | runtime->delay = subs->last_delay; | |
1673 | ||
1674 | /* | |
1675 | * Report when delay estimate is off by more than 2ms. | |
1676 | * The error should be lower than 2ms since the estimate relies | |
1677 | * on two reads of a counter updated every ms. | |
1678 | */ | |
b7a77235 SE |
1679 | if (abs(est_delay - subs->last_delay) * 1000 > runtime->rate * 2) |
1680 | dev_dbg_ratelimited(&subs->dev->dev, | |
0ba41d91 | 1681 | "delay: estimated %d, actual %d\n", |
fbcfbf5f DM |
1682 | est_delay, subs->last_delay); |
1683 | ||
48779a0b TI |
1684 | if (!subs->running) { |
1685 | /* update last_frame_number for delay counting here since | |
1686 | * prepare_playback_urb won't be called during pause | |
1687 | */ | |
1688 | subs->last_frame_number = | |
1689 | usb_get_current_frame_number(subs->dev) & 0xff; | |
1690 | } | |
1691 | ||
1692 | out: | |
edcd3633 | 1693 | spin_unlock_irqrestore(&subs->lock, flags); |
e5779998 DM |
1694 | } |
1695 | ||
edcd3633 DM |
1696 | static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, |
1697 | int cmd) | |
1698 | { | |
1699 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1700 | ||
1701 | switch (cmd) { | |
1702 | case SNDRV_PCM_TRIGGER_START: | |
ea33d359 | 1703 | subs->trigger_tstamp_pending_update = true; |
d5e77fca | 1704 | /* fall through */ |
edcd3633 DM |
1705 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
1706 | subs->data_endpoint->prepare_data_urb = prepare_playback_urb; | |
1707 | subs->data_endpoint->retire_data_urb = retire_playback_urb; | |
97f8d3b6 | 1708 | subs->running = 1; |
edcd3633 DM |
1709 | return 0; |
1710 | case SNDRV_PCM_TRIGGER_STOP: | |
a9bb3626 | 1711 | stop_endpoints(subs, false); |
97f8d3b6 | 1712 | subs->running = 0; |
edcd3633 DM |
1713 | return 0; |
1714 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1715 | subs->data_endpoint->prepare_data_urb = NULL; | |
48779a0b TI |
1716 | /* keep retire_data_urb for delay calculation */ |
1717 | subs->data_endpoint->retire_data_urb = retire_playback_urb; | |
97f8d3b6 | 1718 | subs->running = 0; |
edcd3633 DM |
1719 | return 0; |
1720 | } | |
1721 | ||
1722 | return -EINVAL; | |
1723 | } | |
1724 | ||
afe25967 DM |
1725 | static int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, |
1726 | int cmd) | |
edcd3633 DM |
1727 | { |
1728 | int err; | |
1729 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1730 | ||
1731 | switch (cmd) { | |
1732 | case SNDRV_PCM_TRIGGER_START: | |
1d0f9530 | 1733 | err = start_endpoints(subs); |
edcd3633 DM |
1734 | if (err < 0) |
1735 | return err; | |
1736 | ||
1737 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1738 | subs->running = 1; |
edcd3633 DM |
1739 | return 0; |
1740 | case SNDRV_PCM_TRIGGER_STOP: | |
a9bb3626 | 1741 | stop_endpoints(subs, false); |
97f8d3b6 | 1742 | subs->running = 0; |
edcd3633 DM |
1743 | return 0; |
1744 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1745 | subs->data_endpoint->retire_data_urb = NULL; | |
97f8d3b6 | 1746 | subs->running = 0; |
edcd3633 DM |
1747 | return 0; |
1748 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1749 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1750 | subs->running = 1; |
edcd3633 DM |
1751 | return 0; |
1752 | } | |
1753 | ||
1754 | return -EINVAL; | |
1755 | } | |
1756 | ||
31cb1fb4 | 1757 | static const struct snd_pcm_ops snd_usb_playback_ops = { |
6fddc797 TI |
1758 | .open = snd_usb_pcm_open, |
1759 | .close = snd_usb_pcm_close, | |
e5779998 DM |
1760 | .ioctl = snd_pcm_lib_ioctl, |
1761 | .hw_params = snd_usb_hw_params, | |
1762 | .hw_free = snd_usb_hw_free, | |
1763 | .prepare = snd_usb_pcm_prepare, | |
1764 | .trigger = snd_usb_substream_playback_trigger, | |
1765 | .pointer = snd_usb_pcm_pointer, | |
1766 | .page = snd_pcm_lib_get_vmalloc_page, | |
e5779998 DM |
1767 | }; |
1768 | ||
31cb1fb4 | 1769 | static const struct snd_pcm_ops snd_usb_capture_ops = { |
6fddc797 TI |
1770 | .open = snd_usb_pcm_open, |
1771 | .close = snd_usb_pcm_close, | |
e5779998 DM |
1772 | .ioctl = snd_pcm_lib_ioctl, |
1773 | .hw_params = snd_usb_hw_params, | |
1774 | .hw_free = snd_usb_hw_free, | |
1775 | .prepare = snd_usb_pcm_prepare, | |
1776 | .trigger = snd_usb_substream_capture_trigger, | |
1777 | .pointer = snd_usb_pcm_pointer, | |
1778 | .page = snd_pcm_lib_get_vmalloc_page, | |
e5779998 DM |
1779 | }; |
1780 | ||
f274baa4 TI |
1781 | static const struct snd_pcm_ops snd_usb_playback_dev_ops = { |
1782 | .open = snd_usb_pcm_open, | |
1783 | .close = snd_usb_pcm_close, | |
1784 | .ioctl = snd_pcm_lib_ioctl, | |
1785 | .hw_params = snd_usb_hw_params, | |
1786 | .hw_free = snd_usb_hw_free, | |
1787 | .prepare = snd_usb_pcm_prepare, | |
1788 | .trigger = snd_usb_substream_playback_trigger, | |
1789 | .pointer = snd_usb_pcm_pointer, | |
1790 | .page = snd_pcm_sgbuf_ops_page, | |
1791 | }; | |
1792 | ||
1793 | static const struct snd_pcm_ops snd_usb_capture_dev_ops = { | |
1794 | .open = snd_usb_pcm_open, | |
1795 | .close = snd_usb_pcm_close, | |
1796 | .ioctl = snd_pcm_lib_ioctl, | |
1797 | .hw_params = snd_usb_hw_params, | |
1798 | .hw_free = snd_usb_hw_free, | |
1799 | .prepare = snd_usb_pcm_prepare, | |
1800 | .trigger = snd_usb_substream_capture_trigger, | |
1801 | .pointer = snd_usb_pcm_pointer, | |
1802 | .page = snd_pcm_sgbuf_ops_page, | |
1803 | }; | |
1804 | ||
e5779998 DM |
1805 | void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream) |
1806 | { | |
f274baa4 TI |
1807 | const struct snd_pcm_ops *ops; |
1808 | ||
1809 | if (snd_usb_use_vmalloc) | |
1810 | ops = stream == SNDRV_PCM_STREAM_PLAYBACK ? | |
1811 | &snd_usb_playback_ops : &snd_usb_capture_ops; | |
1812 | else | |
1813 | ops = stream == SNDRV_PCM_STREAM_PLAYBACK ? | |
1814 | &snd_usb_playback_dev_ops : &snd_usb_capture_dev_ops; | |
1815 | snd_pcm_set_ops(pcm, stream, ops); | |
1816 | } | |
1817 | ||
1818 | void snd_usb_preallocate_buffer(struct snd_usb_substream *subs) | |
1819 | { | |
1820 | struct snd_pcm *pcm = subs->stream->pcm; | |
1821 | struct snd_pcm_substream *s = pcm->streams[subs->direction].substream; | |
1822 | struct device *dev = subs->dev->bus->controller; | |
1823 | ||
1824 | if (!snd_usb_use_vmalloc) | |
1825 | snd_pcm_lib_preallocate_pages(s, SNDRV_DMA_TYPE_DEV_SG, | |
1826 | dev, 64*1024, 512*1024); | |
e5779998 | 1827 | } |