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Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
e5779998 | 2 | /* |
e5779998 DM |
3 | */ |
4 | ||
5 | #include <linux/init.h> | |
9966ddaf | 6 | #include <linux/slab.h> |
44dcbbb1 | 7 | #include <linux/bitrev.h> |
edcd3633 | 8 | #include <linux/ratelimit.h> |
e5779998 DM |
9 | #include <linux/usb.h> |
10 | #include <linux/usb/audio.h> | |
7e847894 | 11 | #include <linux/usb/audio-v2.h> |
e5779998 DM |
12 | |
13 | #include <sound/core.h> | |
14 | #include <sound/pcm.h> | |
15 | #include <sound/pcm_params.h> | |
16 | ||
17 | #include "usbaudio.h" | |
18 | #include "card.h" | |
19 | #include "quirks.h" | |
20 | #include "debug.h" | |
c731bc96 | 21 | #include "endpoint.h" |
e5779998 DM |
22 | #include "helper.h" |
23 | #include "pcm.h" | |
79f920fb | 24 | #include "clock.h" |
88a8516a | 25 | #include "power.h" |
66354f18 | 26 | #include "media.h" |
e5779998 | 27 | |
edcd3633 DM |
28 | #define SUBSTREAM_FLAG_DATA_EP_STARTED 0 |
29 | #define SUBSTREAM_FLAG_SYNC_EP_STARTED 1 | |
30 | ||
294c4fb8 PLB |
31 | /* return the estimated delay based on USB frame counters */ |
32 | snd_pcm_uframes_t snd_usb_pcm_delay(struct snd_usb_substream *subs, | |
33 | unsigned int rate) | |
34 | { | |
35 | int current_frame_number; | |
36 | int frame_diff; | |
37 | int est_delay; | |
38 | ||
48779a0b TI |
39 | if (!subs->last_delay) |
40 | return 0; /* short path */ | |
41 | ||
294c4fb8 PLB |
42 | current_frame_number = usb_get_current_frame_number(subs->dev); |
43 | /* | |
44 | * HCD implementations use different widths, use lower 8 bits. | |
45 | * The delay will be managed up to 256ms, which is more than | |
46 | * enough | |
47 | */ | |
48 | frame_diff = (current_frame_number - subs->last_frame_number) & 0xff; | |
49 | ||
50 | /* Approximation based on number of samples per USB frame (ms), | |
51 | some truncation for 44.1 but the estimate is good enough */ | |
e4cc6153 PLB |
52 | est_delay = frame_diff * rate / 1000; |
53 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) | |
54 | est_delay = subs->last_delay - est_delay; | |
55 | else | |
56 | est_delay = subs->last_delay + est_delay; | |
57 | ||
294c4fb8 PLB |
58 | if (est_delay < 0) |
59 | est_delay = 0; | |
60 | return est_delay; | |
61 | } | |
62 | ||
e5779998 DM |
63 | /* |
64 | * return the current pcm pointer. just based on the hwptr_done value. | |
65 | */ | |
66 | static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream) | |
67 | { | |
e92be814 | 68 | struct snd_usb_substream *subs = substream->runtime->private_data; |
e5779998 DM |
69 | unsigned int hwptr_done; |
70 | ||
47ab1545 | 71 | if (atomic_read(&subs->stream->chip->shutdown)) |
978520b7 | 72 | return SNDRV_PCM_POS_XRUN; |
e5779998 DM |
73 | spin_lock(&subs->lock); |
74 | hwptr_done = subs->hwptr_done; | |
e4cc6153 | 75 | substream->runtime->delay = snd_usb_pcm_delay(subs, |
294c4fb8 | 76 | substream->runtime->rate); |
e5779998 DM |
77 | spin_unlock(&subs->lock); |
78 | return hwptr_done / (substream->runtime->frame_bits >> 3); | |
79 | } | |
80 | ||
81 | /* | |
82 | * find a matching audio format | |
83 | */ | |
61a70950 | 84 | static struct audioformat *find_format(struct snd_usb_substream *subs) |
e5779998 | 85 | { |
88766f04 | 86 | struct audioformat *fp; |
e5779998 DM |
87 | struct audioformat *found = NULL; |
88 | int cur_attr = 0, attr; | |
89 | ||
88766f04 | 90 | list_for_each_entry(fp, &subs->fmt_list, list) { |
74c34ca1 | 91 | if (!(fp->formats & pcm_format_to_bits(subs->pcm_format))) |
015eb0b0 | 92 | continue; |
61a70950 | 93 | if (fp->channels != subs->channels) |
e5779998 | 94 | continue; |
61a70950 DR |
95 | if (subs->cur_rate < fp->rate_min || |
96 | subs->cur_rate > fp->rate_max) | |
e5779998 DM |
97 | continue; |
98 | if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { | |
99 | unsigned int i; | |
100 | for (i = 0; i < fp->nr_rates; i++) | |
61a70950 | 101 | if (fp->rate_table[i] == subs->cur_rate) |
e5779998 DM |
102 | break; |
103 | if (i >= fp->nr_rates) | |
104 | continue; | |
105 | } | |
106 | attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
107 | if (! found) { | |
108 | found = fp; | |
109 | cur_attr = attr; | |
110 | continue; | |
111 | } | |
112 | /* avoid async out and adaptive in if the other method | |
113 | * supports the same format. | |
114 | * this is a workaround for the case like | |
115 | * M-audio audiophile USB. | |
116 | */ | |
117 | if (attr != cur_attr) { | |
118 | if ((attr == USB_ENDPOINT_SYNC_ASYNC && | |
119 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
120 | (attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
121 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) | |
122 | continue; | |
123 | if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC && | |
124 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
125 | (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
126 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { | |
127 | found = fp; | |
128 | cur_attr = attr; | |
129 | continue; | |
130 | } | |
131 | } | |
132 | /* find the format with the largest max. packet size */ | |
133 | if (fp->maxpacksize > found->maxpacksize) { | |
134 | found = fp; | |
135 | cur_attr = attr; | |
136 | } | |
137 | } | |
138 | return found; | |
139 | } | |
140 | ||
767d75ad DM |
141 | static int init_pitch_v1(struct snd_usb_audio *chip, int iface, |
142 | struct usb_host_interface *alts, | |
143 | struct audioformat *fmt) | |
144 | { | |
145 | struct usb_device *dev = chip->dev; | |
146 | unsigned int ep; | |
147 | unsigned char data[1]; | |
148 | int err; | |
149 | ||
447d6275 TI |
150 | if (get_iface_desc(alts)->bNumEndpoints < 1) |
151 | return -EINVAL; | |
767d75ad DM |
152 | ep = get_endpoint(alts, 0)->bEndpointAddress; |
153 | ||
767d75ad | 154 | data[0] = 1; |
f25ecf8f TI |
155 | err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, |
156 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, | |
157 | UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, | |
158 | data, sizeof(data)); | |
159 | if (err < 0) { | |
0ba41d91 TI |
160 | usb_audio_err(chip, "%d:%d: cannot set enable PITCH\n", |
161 | iface, ep); | |
767d75ad DM |
162 | return err; |
163 | } | |
164 | ||
165 | return 0; | |
166 | } | |
e5779998 | 167 | |
92c25611 DM |
168 | static int init_pitch_v2(struct snd_usb_audio *chip, int iface, |
169 | struct usb_host_interface *alts, | |
170 | struct audioformat *fmt) | |
171 | { | |
172 | struct usb_device *dev = chip->dev; | |
173 | unsigned char data[1]; | |
92c25611 DM |
174 | int err; |
175 | ||
92c25611 | 176 | data[0] = 1; |
f25ecf8f TI |
177 | err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR, |
178 | USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT, | |
179 | UAC2_EP_CS_PITCH << 8, 0, | |
180 | data, sizeof(data)); | |
181 | if (err < 0) { | |
0ba41d91 TI |
182 | usb_audio_err(chip, "%d:%d: cannot set enable PITCH (v2)\n", |
183 | iface, fmt->altsetting); | |
92c25611 DM |
184 | return err; |
185 | } | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
e5779998 | 190 | /* |
92c25611 | 191 | * initialize the pitch control and sample rate |
e5779998 | 192 | */ |
767d75ad | 193 | int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface, |
e5779998 DM |
194 | struct usb_host_interface *alts, |
195 | struct audioformat *fmt) | |
196 | { | |
92c25611 DM |
197 | /* if endpoint doesn't have pitch control, bail out */ |
198 | if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) | |
199 | return 0; | |
200 | ||
8f898e92 | 201 | switch (fmt->protocol) { |
767d75ad | 202 | case UAC_VERSION_1: |
a2acad82 | 203 | default: |
767d75ad DM |
204 | return init_pitch_v1(chip, iface, alts, fmt); |
205 | ||
206 | case UAC_VERSION_2: | |
92c25611 | 207 | return init_pitch_v2(chip, iface, alts, fmt); |
767d75ad | 208 | } |
767d75ad DM |
209 | } |
210 | ||
1d0f9530 | 211 | static int start_endpoints(struct snd_usb_substream *subs) |
edcd3633 DM |
212 | { |
213 | int err; | |
214 | ||
215 | if (!subs->data_endpoint) | |
216 | return -EINVAL; | |
217 | ||
218 | if (!test_and_set_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) { | |
219 | struct snd_usb_endpoint *ep = subs->data_endpoint; | |
220 | ||
0ba41d91 | 221 | dev_dbg(&subs->dev->dev, "Starting data EP @%p\n", ep); |
edcd3633 DM |
222 | |
223 | ep->data_subs = subs; | |
1d0f9530 | 224 | err = snd_usb_endpoint_start(ep); |
edcd3633 DM |
225 | if (err < 0) { |
226 | clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags); | |
227 | return err; | |
228 | } | |
229 | } | |
230 | ||
231 | if (subs->sync_endpoint && | |
232 | !test_and_set_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) { | |
233 | struct snd_usb_endpoint *ep = subs->sync_endpoint; | |
234 | ||
2e4a263c | 235 | if (subs->data_endpoint->iface != subs->sync_endpoint->iface || |
df23a246 | 236 | subs->data_endpoint->altsetting != subs->sync_endpoint->altsetting) { |
2e4a263c DM |
237 | err = usb_set_interface(subs->dev, |
238 | subs->sync_endpoint->iface, | |
df23a246 | 239 | subs->sync_endpoint->altsetting); |
2e4a263c | 240 | if (err < 0) { |
06613f54 | 241 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); |
0ba41d91 TI |
242 | dev_err(&subs->dev->dev, |
243 | "%d:%d: cannot set interface (%d)\n", | |
2e4a263c | 244 | subs->sync_endpoint->iface, |
df23a246 | 245 | subs->sync_endpoint->altsetting, err); |
2e4a263c DM |
246 | return -EIO; |
247 | } | |
248 | } | |
249 | ||
0ba41d91 | 250 | dev_dbg(&subs->dev->dev, "Starting sync EP @%p\n", ep); |
edcd3633 DM |
251 | |
252 | ep->sync_slave = subs->data_endpoint; | |
1d0f9530 | 253 | err = snd_usb_endpoint_start(ep); |
edcd3633 DM |
254 | if (err < 0) { |
255 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); | |
256 | return err; | |
257 | } | |
258 | } | |
259 | ||
260 | return 0; | |
261 | } | |
262 | ||
dc5eafe7 TI |
263 | static void sync_pending_stops(struct snd_usb_substream *subs) |
264 | { | |
265 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); | |
266 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
267 | } | |
268 | ||
269 | static void stop_endpoints(struct snd_usb_substream *subs) | |
edcd3633 DM |
270 | { |
271 | if (test_and_clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) | |
b2eb950d | 272 | snd_usb_endpoint_stop(subs->sync_endpoint); |
edcd3633 DM |
273 | |
274 | if (test_and_clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) | |
b2eb950d | 275 | snd_usb_endpoint_stop(subs->data_endpoint); |
dc5eafe7 | 276 | } |
b2eb950d | 277 | |
dc5eafe7 TI |
278 | /* PCM sync_stop callback */ |
279 | static int snd_usb_pcm_sync_stop(struct snd_pcm_substream *substream) | |
280 | { | |
281 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
282 | ||
283 | if (!snd_usb_lock_shutdown(subs->stream->chip)) { | |
284 | sync_pending_stops(subs); | |
285 | snd_usb_unlock_shutdown(subs->stream->chip); | |
b2eb950d | 286 | } |
dc5eafe7 | 287 | return 0; |
edcd3633 DM |
288 | } |
289 | ||
ba7c2be1 CL |
290 | static int search_roland_implicit_fb(struct usb_device *dev, int ifnum, |
291 | unsigned int altsetting, | |
292 | struct usb_host_interface **alts, | |
293 | unsigned int *ep) | |
294 | { | |
295 | struct usb_interface *iface; | |
296 | struct usb_interface_descriptor *altsd; | |
297 | struct usb_endpoint_descriptor *epd; | |
298 | ||
299 | iface = usb_ifnum_to_if(dev, ifnum); | |
300 | if (!iface || iface->num_altsetting < altsetting + 1) | |
301 | return -ENOENT; | |
302 | *alts = &iface->altsetting[altsetting]; | |
303 | altsd = get_iface_desc(*alts); | |
304 | if (altsd->bAlternateSetting != altsetting || | |
305 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC || | |
306 | (altsd->bInterfaceSubClass != 2 && | |
307 | altsd->bInterfaceProtocol != 2 ) || | |
308 | altsd->bNumEndpoints < 1) | |
309 | return -ENOENT; | |
310 | epd = get_endpoint(*alts, 0); | |
311 | if (!usb_endpoint_is_isoc_in(epd) || | |
312 | (epd->bmAttributes & USB_ENDPOINT_USAGE_MASK) != | |
313 | USB_ENDPOINT_USAGE_IMPLICIT_FB) | |
314 | return -ENOENT; | |
315 | *ep = epd->bEndpointAddress; | |
316 | return 0; | |
317 | } | |
318 | ||
2bc16b9f MR |
319 | /* Setup an implicit feedback endpoint from a quirk. Returns 0 if no quirk |
320 | * applies. Returns 1 if a quirk was found. | |
321 | */ | |
a60945fd EZ |
322 | static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs, |
323 | struct usb_device *dev, | |
324 | struct usb_interface_descriptor *altsd, | |
325 | unsigned int attr) | |
e5779998 | 326 | { |
a60945fd | 327 | struct usb_host_interface *alts; |
e5779998 | 328 | struct usb_interface *iface; |
a60945fd | 329 | unsigned int ep; |
103e9625 | 330 | unsigned int ifnum; |
c75a8a7a | 331 | |
914273c7 EZ |
332 | /* Implicit feedback sync EPs consumers are always playback EPs */ |
333 | if (subs->direction != SNDRV_PCM_STREAM_PLAYBACK) | |
334 | return 0; | |
335 | ||
c75a8a7a | 336 | switch (subs->stream->chip->usb_id) { |
ca10a7eb | 337 | case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ |
e9a25e04 | 338 | case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ |
914273c7 | 339 | ep = 0x81; |
103e9625 AA |
340 | ifnum = 3; |
341 | goto add_sync_ep_from_ifnum; | |
c75a8a7a DM |
342 | case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */ |
343 | case USB_ID(0x0763, 0x2081): | |
914273c7 | 344 | ep = 0x81; |
103e9625 AA |
345 | ifnum = 2; |
346 | goto add_sync_ep_from_ifnum; | |
347 | case USB_ID(0x2466, 0x8003): /* Fractal Audio Axe-Fx II */ | |
17f08b0d | 348 | ep = 0x86; |
103e9625 AA |
349 | ifnum = 2; |
350 | goto add_sync_ep_from_ifnum; | |
91a8561d AA |
351 | case USB_ID(0x2466, 0x8010): /* Fractal Audio Axe-Fx III */ |
352 | ep = 0x81; | |
353 | ifnum = 2; | |
354 | goto add_sync_ep_from_ifnum; | |
1a15718b | 355 | case USB_ID(0x1397, 0x0001): /* Behringer UFX1604 */ |
103e9625 | 356 | case USB_ID(0x1397, 0x0002): /* Behringer UFX1204 */ |
5e35dc03 | 357 | ep = 0x81; |
103e9625 AA |
358 | ifnum = 1; |
359 | goto add_sync_ep_from_ifnum; | |
2edb84e3 AT |
360 | case USB_ID(0x07fd, 0x0004): /* MOTU MicroBook II/IIc */ |
361 | /* MicroBook IIc */ | |
362 | if (altsd->bInterfaceClass == USB_CLASS_AUDIO) | |
363 | return 0; | |
364 | ||
365 | /* MicroBook II */ | |
a634090a MR |
366 | ep = 0x84; |
367 | ifnum = 0; | |
368 | goto add_sync_ep_from_ifnum; | |
c2491779 | 369 | case USB_ID(0x07fd, 0x0008): /* MOTU M Series */ |
3da87ec6 | 370 | case USB_ID(0x31e9, 0x0001): /* Solid State Logic SSL2 */ |
e7585db1 | 371 | case USB_ID(0x31e9, 0x0002): /* Solid State Logic SSL2+ */ |
b6a1e78b | 372 | case USB_ID(0x0d9a, 0x00df): /* RTX6001 */ |
c2491779 AT |
373 | ep = 0x81; |
374 | ifnum = 2; | |
375 | goto add_sync_ep_from_ifnum; | |
7fccfecf DP |
376 | case USB_ID(0x2b73, 0x000a): /* Pioneer DJ DJM-900NXS2 */ |
377 | ep = 0x82; | |
378 | ifnum = 0; | |
379 | goto add_sync_ep_from_ifnum; | |
7571b6a1 SS |
380 | case USB_ID(0x0582, 0x01d8): /* BOSS Katana */ |
381 | /* BOSS Katana amplifiers do not need quirks */ | |
382 | return 0; | |
c75a8a7a | 383 | } |
103e9625 | 384 | |
914273c7 | 385 | if (attr == USB_ENDPOINT_SYNC_ASYNC && |
ba7c2be1 CL |
386 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && |
387 | altsd->bInterfaceProtocol == 2 && | |
388 | altsd->bNumEndpoints == 1 && | |
389 | USB_ID_VENDOR(subs->stream->chip->usb_id) == 0x0582 /* Roland */ && | |
390 | search_roland_implicit_fb(dev, altsd->bInterfaceNumber + 1, | |
391 | altsd->bAlternateSetting, | |
392 | &alts, &ep) >= 0) { | |
ba7c2be1 CL |
393 | goto add_sync_ep; |
394 | } | |
edcd3633 | 395 | |
a60945fd EZ |
396 | /* No quirk */ |
397 | return 0; | |
398 | ||
103e9625 AA |
399 | add_sync_ep_from_ifnum: |
400 | iface = usb_ifnum_to_if(dev, ifnum); | |
401 | ||
5d1b7122 | 402 | if (!iface || iface->num_altsetting < 2) |
103e9625 AA |
403 | return -EINVAL; |
404 | ||
405 | alts = &iface->altsetting[1]; | |
406 | ||
a60945fd EZ |
407 | add_sync_ep: |
408 | subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, | |
409 | alts, ep, !subs->direction, | |
88abb8ef | 410 | SND_USB_ENDPOINT_TYPE_DATA); |
a60945fd EZ |
411 | if (!subs->sync_endpoint) |
412 | return -EINVAL; | |
413 | ||
10ce77e4 EB |
414 | subs->sync_endpoint->is_implicit_feedback = 1; |
415 | ||
a60945fd EZ |
416 | subs->data_endpoint->sync_master = subs->sync_endpoint; |
417 | ||
2bc16b9f | 418 | return 1; |
a60945fd EZ |
419 | } |
420 | ||
421 | static int set_sync_endpoint(struct snd_usb_substream *subs, | |
422 | struct audioformat *fmt, | |
423 | struct usb_device *dev, | |
424 | struct usb_host_interface *alts, | |
425 | struct usb_interface_descriptor *altsd) | |
426 | { | |
427 | int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; | |
428 | unsigned int ep, attr; | |
95fec883 | 429 | bool implicit_fb; |
a60945fd EZ |
430 | int err; |
431 | ||
432 | /* we need a sync pipe in async OUT or adaptive IN mode */ | |
433 | /* check the number of EP, since some devices have broken | |
434 | * descriptors which fool us. if it has only one EP, | |
435 | * assume it as adaptive-out or sync-in. | |
436 | */ | |
437 | attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
438 | ||
63018447 PLB |
439 | if ((is_playback && (attr != USB_ENDPOINT_SYNC_ASYNC)) || |
440 | (!is_playback && (attr != USB_ENDPOINT_SYNC_ADAPTIVE))) { | |
441 | ||
442 | /* | |
443 | * In these modes the notion of sync_endpoint is irrelevant. | |
444 | * Reset pointers to avoid using stale data from previously | |
445 | * used settings, e.g. when configuration and endpoints were | |
446 | * changed | |
447 | */ | |
448 | ||
449 | subs->sync_endpoint = NULL; | |
450 | subs->data_endpoint->sync_master = NULL; | |
451 | } | |
452 | ||
a60945fd EZ |
453 | err = set_sync_ep_implicit_fb_quirk(subs, dev, altsd, attr); |
454 | if (err < 0) | |
455 | return err; | |
456 | ||
2bc16b9f MR |
457 | /* endpoint set by quirk */ |
458 | if (err > 0) | |
459 | return 0; | |
460 | ||
f34d0650 EZ |
461 | if (altsd->bNumEndpoints < 2) |
462 | return 0; | |
c75a8a7a | 463 | |
395ae54b PLB |
464 | if ((is_playback && (attr == USB_ENDPOINT_SYNC_SYNC || |
465 | attr == USB_ENDPOINT_SYNC_ADAPTIVE)) || | |
f34d0650 EZ |
466 | (!is_playback && attr != USB_ENDPOINT_SYNC_ADAPTIVE)) |
467 | return 0; | |
edcd3633 | 468 | |
395ae54b PLB |
469 | /* |
470 | * In case of illegal SYNC_NONE for OUT endpoint, we keep going to see | |
471 | * if we don't find a sync endpoint, as on M-Audio Transit. In case of | |
472 | * error fall back to SYNC mode and don't create sync endpoint | |
473 | */ | |
474 | ||
f34d0650 EZ |
475 | /* check sync-pipe endpoint */ |
476 | /* ... and check descriptor size before accessing bSynchAddress | |
477 | because there is a version of the SB Audigy 2 NX firmware lacking | |
478 | the audio fields in the endpoint descriptors */ | |
479 | if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC || | |
480 | (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && | |
95fec883 | 481 | get_endpoint(alts, 1)->bSynchAddress != 0)) { |
0ba41d91 TI |
482 | dev_err(&dev->dev, |
483 | "%d:%d : invalid sync pipe. bmAttributes %02x, bLength %d, bSynchAddress %02x\n", | |
484 | fmt->iface, fmt->altsetting, | |
f34d0650 EZ |
485 | get_endpoint(alts, 1)->bmAttributes, |
486 | get_endpoint(alts, 1)->bLength, | |
487 | get_endpoint(alts, 1)->bSynchAddress); | |
395ae54b PLB |
488 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
489 | return 0; | |
f34d0650 EZ |
490 | return -EINVAL; |
491 | } | |
492 | ep = get_endpoint(alts, 1)->bEndpointAddress; | |
95fec883 | 493 | if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
1b34121d | 494 | get_endpoint(alts, 0)->bSynchAddress != 0 && |
f34d0650 EZ |
495 | ((is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || |
496 | (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { | |
0ba41d91 TI |
497 | dev_err(&dev->dev, |
498 | "%d:%d : invalid sync pipe. is_playback %d, ep %02x, bSynchAddress %02x\n", | |
499 | fmt->iface, fmt->altsetting, | |
f34d0650 | 500 | is_playback, ep, get_endpoint(alts, 0)->bSynchAddress); |
395ae54b PLB |
501 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
502 | return 0; | |
f34d0650 | 503 | return -EINVAL; |
edcd3633 | 504 | } |
e5779998 | 505 | |
f34d0650 EZ |
506 | implicit_fb = (get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_USAGE_MASK) |
507 | == USB_ENDPOINT_USAGE_IMPLICIT_FB; | |
508 | ||
509 | subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, | |
510 | alts, ep, !subs->direction, | |
511 | implicit_fb ? | |
512 | SND_USB_ENDPOINT_TYPE_DATA : | |
513 | SND_USB_ENDPOINT_TYPE_SYNC); | |
10ce77e4 | 514 | |
395ae54b PLB |
515 | if (!subs->sync_endpoint) { |
516 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) | |
517 | return 0; | |
f34d0650 | 518 | return -EINVAL; |
395ae54b | 519 | } |
f34d0650 | 520 | |
10ce77e4 EB |
521 | subs->sync_endpoint->is_implicit_feedback = implicit_fb; |
522 | ||
f34d0650 EZ |
523 | subs->data_endpoint->sync_master = subs->sync_endpoint; |
524 | ||
71bb64c5 EZ |
525 | return 0; |
526 | } | |
527 | ||
528 | /* | |
529 | * find a matching format and set up the interface | |
530 | */ | |
531 | static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) | |
532 | { | |
533 | struct usb_device *dev = subs->dev; | |
534 | struct usb_host_interface *alts; | |
535 | struct usb_interface_descriptor *altsd; | |
536 | struct usb_interface *iface; | |
537 | int err; | |
538 | ||
539 | iface = usb_ifnum_to_if(dev, fmt->iface); | |
540 | if (WARN_ON(!iface)) | |
541 | return -EINVAL; | |
b099b969 | 542 | alts = usb_altnum_to_altsetting(iface, fmt->altsetting); |
0141254b | 543 | if (WARN_ON(!alts)) |
71bb64c5 | 544 | return -EINVAL; |
0141254b | 545 | altsd = get_iface_desc(alts); |
71bb64c5 | 546 | |
92adc96f | 547 | if (fmt == subs->cur_audiofmt && !subs->need_setup_fmt) |
71bb64c5 EZ |
548 | return 0; |
549 | ||
550 | /* close the old interface */ | |
92adc96f | 551 | if (subs->interface >= 0 && (subs->interface != fmt->iface || subs->need_setup_fmt)) { |
8a463225 TI |
552 | if (!subs->stream->chip->keep_iface) { |
553 | err = usb_set_interface(subs->dev, subs->interface, 0); | |
554 | if (err < 0) { | |
555 | dev_err(&dev->dev, | |
556 | "%d:%d: return to setting 0 failed (%d)\n", | |
557 | fmt->iface, fmt->altsetting, err); | |
558 | return -EIO; | |
559 | } | |
71bb64c5 EZ |
560 | } |
561 | subs->interface = -1; | |
562 | subs->altset_idx = 0; | |
563 | } | |
564 | ||
92adc96f HW |
565 | if (subs->need_setup_fmt) |
566 | subs->need_setup_fmt = false; | |
567 | ||
71bb64c5 | 568 | /* set interface */ |
b099b969 | 569 | if (iface->cur_altsetting != alts) { |
6874daad JK |
570 | err = snd_usb_select_mode_quirk(subs, fmt); |
571 | if (err < 0) | |
572 | return -EIO; | |
573 | ||
71bb64c5 EZ |
574 | err = usb_set_interface(dev, fmt->iface, fmt->altsetting); |
575 | if (err < 0) { | |
0ba41d91 TI |
576 | dev_err(&dev->dev, |
577 | "%d:%d: usb_set_interface failed (%d)\n", | |
578 | fmt->iface, fmt->altsetting, err); | |
71bb64c5 EZ |
579 | return -EIO; |
580 | } | |
0ba41d91 TI |
581 | dev_dbg(&dev->dev, "setting usb interface %d:%d\n", |
582 | fmt->iface, fmt->altsetting); | |
71bb64c5 EZ |
583 | snd_usb_set_interface_quirk(dev); |
584 | } | |
585 | ||
b099b969 TI |
586 | subs->interface = fmt->iface; |
587 | subs->altset_idx = fmt->altset_idx; | |
71bb64c5 EZ |
588 | subs->data_endpoint = snd_usb_add_endpoint(subs->stream->chip, |
589 | alts, fmt->endpoint, subs->direction, | |
590 | SND_USB_ENDPOINT_TYPE_DATA); | |
591 | ||
592 | if (!subs->data_endpoint) | |
593 | return -EINVAL; | |
594 | ||
595 | err = set_sync_endpoint(subs, fmt, dev, alts, altsd); | |
596 | if (err < 0) | |
597 | return err; | |
598 | ||
d133f2c2 EZ |
599 | err = snd_usb_init_pitch(subs->stream->chip, fmt->iface, alts, fmt); |
600 | if (err < 0) | |
e5779998 DM |
601 | return err; |
602 | ||
603 | subs->cur_audiofmt = fmt; | |
604 | ||
605 | snd_usb_set_format_quirk(subs, fmt); | |
606 | ||
e5779998 DM |
607 | return 0; |
608 | } | |
609 | ||
0d9741c0 EZ |
610 | /* |
611 | * Return the score of matching two audioformats. | |
612 | * Veto the audioformat if: | |
613 | * - It has no channels for some reason. | |
614 | * - Requested PCM format is not supported. | |
615 | * - Requested sample rate is not supported. | |
616 | */ | |
0ba41d91 TI |
617 | static int match_endpoint_audioformats(struct snd_usb_substream *subs, |
618 | struct audioformat *fp, | |
619 | struct audioformat *match, int rate, | |
620 | snd_pcm_format_t pcm_format) | |
0d9741c0 EZ |
621 | { |
622 | int i; | |
623 | int score = 0; | |
624 | ||
625 | if (fp->channels < 1) { | |
0ba41d91 TI |
626 | dev_dbg(&subs->dev->dev, |
627 | "%s: (fmt @%p) no channels\n", __func__, fp); | |
0d9741c0 EZ |
628 | return 0; |
629 | } | |
630 | ||
74c34ca1 | 631 | if (!(fp->formats & pcm_format_to_bits(pcm_format))) { |
0ba41d91 TI |
632 | dev_dbg(&subs->dev->dev, |
633 | "%s: (fmt @%p) no match for format %d\n", __func__, | |
0d9741c0 EZ |
634 | fp, pcm_format); |
635 | return 0; | |
636 | } | |
637 | ||
638 | for (i = 0; i < fp->nr_rates; i++) { | |
639 | if (fp->rate_table[i] == rate) { | |
640 | score++; | |
641 | break; | |
642 | } | |
643 | } | |
644 | if (!score) { | |
0ba41d91 TI |
645 | dev_dbg(&subs->dev->dev, |
646 | "%s: (fmt @%p) no match for rate %d\n", __func__, | |
0d9741c0 EZ |
647 | fp, rate); |
648 | return 0; | |
649 | } | |
650 | ||
651 | if (fp->channels == match->channels) | |
652 | score++; | |
653 | ||
0ba41d91 TI |
654 | dev_dbg(&subs->dev->dev, |
655 | "%s: (fmt @%p) score %d\n", __func__, fp, score); | |
0d9741c0 EZ |
656 | |
657 | return score; | |
658 | } | |
659 | ||
660 | /* | |
661 | * Configure the sync ep using the rate and pcm format of the data ep. | |
662 | */ | |
663 | static int configure_sync_endpoint(struct snd_usb_substream *subs) | |
664 | { | |
665 | int ret; | |
666 | struct audioformat *fp; | |
667 | struct audioformat *sync_fp = NULL; | |
668 | int cur_score = 0; | |
669 | int sync_period_bytes = subs->period_bytes; | |
670 | struct snd_usb_substream *sync_subs = | |
671 | &subs->stream->substream[subs->direction ^ 1]; | |
672 | ||
31be5425 TI |
673 | if (subs->sync_endpoint->type != SND_USB_ENDPOINT_TYPE_DATA || |
674 | !subs->stream) | |
675 | return snd_usb_endpoint_set_params(subs->sync_endpoint, | |
676 | subs->pcm_format, | |
677 | subs->channels, | |
678 | subs->period_bytes, | |
976b6c06 | 679 | 0, 0, |
31be5425 TI |
680 | subs->cur_rate, |
681 | subs->cur_audiofmt, | |
682 | NULL); | |
683 | ||
0d9741c0 EZ |
684 | /* Try to find the best matching audioformat. */ |
685 | list_for_each_entry(fp, &sync_subs->fmt_list, list) { | |
0ba41d91 TI |
686 | int score = match_endpoint_audioformats(subs, |
687 | fp, subs->cur_audiofmt, | |
0d9741c0 EZ |
688 | subs->cur_rate, subs->pcm_format); |
689 | ||
690 | if (score > cur_score) { | |
691 | sync_fp = fp; | |
692 | cur_score = score; | |
693 | } | |
694 | } | |
695 | ||
696 | if (unlikely(sync_fp == NULL)) { | |
0ba41d91 TI |
697 | dev_err(&subs->dev->dev, |
698 | "%s: no valid audioformat for sync ep %x found\n", | |
0d9741c0 EZ |
699 | __func__, sync_subs->ep_num); |
700 | return -EINVAL; | |
701 | } | |
702 | ||
703 | /* | |
704 | * Recalculate the period bytes if channel number differ between | |
705 | * data and sync ep audioformat. | |
706 | */ | |
707 | if (sync_fp->channels != subs->channels) { | |
708 | sync_period_bytes = (subs->period_bytes / subs->channels) * | |
709 | sync_fp->channels; | |
0ba41d91 TI |
710 | dev_dbg(&subs->dev->dev, |
711 | "%s: adjusted sync ep period bytes (%d -> %d)\n", | |
0d9741c0 EZ |
712 | __func__, subs->period_bytes, sync_period_bytes); |
713 | } | |
714 | ||
715 | ret = snd_usb_endpoint_set_params(subs->sync_endpoint, | |
716 | subs->pcm_format, | |
717 | sync_fp->channels, | |
718 | sync_period_bytes, | |
976b6c06 | 719 | 0, 0, |
0d9741c0 EZ |
720 | subs->cur_rate, |
721 | sync_fp, | |
722 | NULL); | |
723 | ||
724 | return ret; | |
725 | } | |
726 | ||
61a70950 DR |
727 | /* |
728 | * configure endpoint params | |
729 | * | |
730 | * called during initial setup and upon resume | |
731 | */ | |
732 | static int configure_endpoint(struct snd_usb_substream *subs) | |
733 | { | |
734 | int ret; | |
735 | ||
61a70950 | 736 | /* format changed */ |
dc5eafe7 TI |
737 | stop_endpoints(subs); |
738 | sync_pending_stops(subs); | |
61a70950 DR |
739 | ret = snd_usb_endpoint_set_params(subs->data_endpoint, |
740 | subs->pcm_format, | |
741 | subs->channels, | |
742 | subs->period_bytes, | |
976b6c06 AS |
743 | subs->period_frames, |
744 | subs->buffer_periods, | |
61a70950 DR |
745 | subs->cur_rate, |
746 | subs->cur_audiofmt, | |
747 | subs->sync_endpoint); | |
748 | if (ret < 0) | |
978520b7 | 749 | return ret; |
61a70950 DR |
750 | |
751 | if (subs->sync_endpoint) | |
0d9741c0 EZ |
752 | ret = configure_sync_endpoint(subs); |
753 | ||
61a70950 DR |
754 | return ret; |
755 | } | |
756 | ||
3f59aa11 JS |
757 | static int snd_usb_pcm_change_state(struct snd_usb_substream *subs, int state) |
758 | { | |
759 | int ret; | |
760 | ||
761 | if (!subs->str_pd) | |
762 | return 0; | |
763 | ||
764 | ret = snd_usb_power_domain_set(subs->stream->chip, subs->str_pd, state); | |
765 | if (ret < 0) { | |
766 | dev_err(&subs->dev->dev, | |
767 | "Cannot change Power Domain ID: %d to state: %d. Err: %d\n", | |
768 | subs->str_pd->pd_id, state, ret); | |
769 | return ret; | |
770 | } | |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
775 | int snd_usb_pcm_suspend(struct snd_usb_stream *as) | |
776 | { | |
777 | int ret; | |
778 | ||
779 | ret = snd_usb_pcm_change_state(&as->substream[0], UAC3_PD_STATE_D2); | |
780 | if (ret < 0) | |
781 | return ret; | |
782 | ||
783 | ret = snd_usb_pcm_change_state(&as->substream[1], UAC3_PD_STATE_D2); | |
784 | if (ret < 0) | |
785 | return ret; | |
786 | ||
787 | return 0; | |
788 | } | |
789 | ||
790 | int snd_usb_pcm_resume(struct snd_usb_stream *as) | |
791 | { | |
792 | int ret; | |
793 | ||
a0a4959e | 794 | ret = snd_usb_pcm_change_state(&as->substream[0], UAC3_PD_STATE_D1); |
3f59aa11 JS |
795 | if (ret < 0) |
796 | return ret; | |
797 | ||
a0a4959e | 798 | ret = snd_usb_pcm_change_state(&as->substream[1], UAC3_PD_STATE_D1); |
3f59aa11 JS |
799 | if (ret < 0) |
800 | return ret; | |
801 | ||
802 | return 0; | |
803 | } | |
804 | ||
e5779998 DM |
805 | /* |
806 | * hw_params callback | |
807 | * | |
808 | * allocate a buffer and set the given audio format. | |
809 | * | |
810 | * so far we use a physically linear buffer although packetize transfer | |
811 | * doesn't need a continuous area. | |
812 | * if sg buffer is supported on the later version of alsa, we'll follow | |
813 | * that. | |
814 | */ | |
815 | static int snd_usb_hw_params(struct snd_pcm_substream *substream, | |
816 | struct snd_pcm_hw_params *hw_params) | |
817 | { | |
818 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
819 | struct audioformat *fmt; | |
61a70950 | 820 | int ret; |
e5779998 | 821 | |
66354f18 SK |
822 | ret = snd_media_start_pipeline(subs); |
823 | if (ret) | |
824 | return ret; | |
825 | ||
61a70950 DR |
826 | subs->pcm_format = params_format(hw_params); |
827 | subs->period_bytes = params_period_bytes(hw_params); | |
976b6c06 AS |
828 | subs->period_frames = params_period_size(hw_params); |
829 | subs->buffer_periods = params_periods(hw_params); | |
61a70950 DR |
830 | subs->channels = params_channels(hw_params); |
831 | subs->cur_rate = params_rate(hw_params); | |
832 | ||
833 | fmt = find_format(subs); | |
e5779998 | 834 | if (!fmt) { |
0ba41d91 TI |
835 | dev_dbg(&subs->dev->dev, |
836 | "cannot set format: format = %#x, rate = %d, channels = %d\n", | |
61a70950 | 837 | subs->pcm_format, subs->cur_rate, subs->channels); |
66354f18 SK |
838 | ret = -EINVAL; |
839 | goto stop_pipeline; | |
e5779998 DM |
840 | } |
841 | ||
47ab1545 TI |
842 | ret = snd_usb_lock_shutdown(subs->stream->chip); |
843 | if (ret < 0) | |
66354f18 | 844 | goto stop_pipeline; |
a0a4959e JS |
845 | |
846 | ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D0); | |
847 | if (ret < 0) | |
848 | goto unlock; | |
849 | ||
47ab1545 | 850 | ret = set_format(subs, fmt); |
978520b7 | 851 | if (ret < 0) |
a0a4959e | 852 | goto unlock; |
e5779998 | 853 | |
61a70950 DR |
854 | subs->interface = fmt->iface; |
855 | subs->altset_idx = fmt->altset_idx; | |
384dc085 | 856 | subs->need_setup_ep = true; |
715a1705 | 857 | |
a0a4959e JS |
858 | unlock: |
859 | snd_usb_unlock_shutdown(subs->stream->chip); | |
66354f18 SK |
860 | if (ret < 0) |
861 | goto stop_pipeline; | |
862 | return ret; | |
863 | ||
864 | stop_pipeline: | |
865 | snd_media_stop_pipeline(subs); | |
a0a4959e | 866 | return ret; |
e5779998 DM |
867 | } |
868 | ||
869 | /* | |
870 | * hw_free callback | |
871 | * | |
872 | * reset the audio format and release the buffer | |
873 | */ | |
874 | static int snd_usb_hw_free(struct snd_pcm_substream *substream) | |
875 | { | |
876 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
877 | ||
66354f18 | 878 | snd_media_stop_pipeline(subs); |
e5779998 DM |
879 | subs->cur_audiofmt = NULL; |
880 | subs->cur_rate = 0; | |
881 | subs->period_bytes = 0; | |
47ab1545 | 882 | if (!snd_usb_lock_shutdown(subs->stream->chip)) { |
dc5eafe7 TI |
883 | stop_endpoints(subs); |
884 | sync_pending_stops(subs); | |
26de5d0a EZ |
885 | snd_usb_endpoint_deactivate(subs->sync_endpoint); |
886 | snd_usb_endpoint_deactivate(subs->data_endpoint); | |
47ab1545 | 887 | snd_usb_unlock_shutdown(subs->stream->chip); |
978520b7 | 888 | } |
f274baa4 | 889 | |
6dd9486c | 890 | return 0; |
e5779998 DM |
891 | } |
892 | ||
893 | /* | |
894 | * prepare callback | |
895 | * | |
896 | * only a few subtle things... | |
897 | */ | |
898 | static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) | |
899 | { | |
900 | struct snd_pcm_runtime *runtime = substream->runtime; | |
901 | struct snd_usb_substream *subs = runtime->private_data; | |
61a70950 DR |
902 | struct usb_host_interface *alts; |
903 | struct usb_interface *iface; | |
904 | int ret; | |
e5779998 DM |
905 | |
906 | if (! subs->cur_audiofmt) { | |
0ba41d91 | 907 | dev_err(&subs->dev->dev, "no format is specified!\n"); |
e5779998 DM |
908 | return -ENXIO; |
909 | } | |
910 | ||
47ab1545 TI |
911 | ret = snd_usb_lock_shutdown(subs->stream->chip); |
912 | if (ret < 0) | |
913 | return ret; | |
978520b7 TI |
914 | if (snd_BUG_ON(!subs->data_endpoint)) { |
915 | ret = -EIO; | |
916 | goto unlock; | |
917 | } | |
edcd3633 | 918 | |
a0a4959e JS |
919 | ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D0); |
920 | if (ret < 0) | |
921 | goto unlock; | |
922 | ||
61a70950 DR |
923 | ret = set_format(subs, subs->cur_audiofmt); |
924 | if (ret < 0) | |
978520b7 | 925 | goto unlock; |
61a70950 | 926 | |
384dc085 | 927 | if (subs->need_setup_ep) { |
1e2e3fe4 DG |
928 | |
929 | iface = usb_ifnum_to_if(subs->dev, subs->cur_audiofmt->iface); | |
930 | alts = &iface->altsetting[subs->cur_audiofmt->altset_idx]; | |
931 | ret = snd_usb_init_sample_rate(subs->stream->chip, | |
932 | subs->cur_audiofmt->iface, | |
933 | alts, | |
934 | subs->cur_audiofmt, | |
935 | subs->cur_rate); | |
936 | if (ret < 0) | |
937 | goto unlock; | |
938 | ||
384dc085 TI |
939 | ret = configure_endpoint(subs); |
940 | if (ret < 0) | |
978520b7 | 941 | goto unlock; |
384dc085 TI |
942 | subs->need_setup_ep = false; |
943 | } | |
61a70950 | 944 | |
e5779998 | 945 | /* some unit conversions in runtime */ |
edcd3633 DM |
946 | subs->data_endpoint->maxframesize = |
947 | bytes_to_frames(runtime, subs->data_endpoint->maxpacksize); | |
948 | subs->data_endpoint->curframesize = | |
949 | bytes_to_frames(runtime, subs->data_endpoint->curpacksize); | |
e5779998 DM |
950 | |
951 | /* reset the pointer */ | |
952 | subs->hwptr_done = 0; | |
953 | subs->transfer_done = 0; | |
294c4fb8 PLB |
954 | subs->last_delay = 0; |
955 | subs->last_frame_number = 0; | |
e5779998 DM |
956 | runtime->delay = 0; |
957 | ||
edcd3633 DM |
958 | /* for playback, submit the URBs now; otherwise, the first hwptr_done |
959 | * updates for all URBs would happen at the same time when starting */ | |
960 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) | |
1d0f9530 | 961 | ret = start_endpoints(subs); |
edcd3633 | 962 | |
978520b7 | 963 | unlock: |
47ab1545 | 964 | snd_usb_unlock_shutdown(subs->stream->chip); |
978520b7 | 965 | return ret; |
e5779998 DM |
966 | } |
967 | ||
aaffbf78 | 968 | static const struct snd_pcm_hardware snd_usb_hardware = |
e5779998 DM |
969 | { |
970 | .info = SNDRV_PCM_INFO_MMAP | | |
971 | SNDRV_PCM_INFO_MMAP_VALID | | |
972 | SNDRV_PCM_INFO_BATCH | | |
973 | SNDRV_PCM_INFO_INTERLEAVED | | |
974 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
975 | SNDRV_PCM_INFO_PAUSE, | |
976 | .buffer_bytes_max = 1024 * 1024, | |
977 | .period_bytes_min = 64, | |
978 | .period_bytes_max = 512 * 1024, | |
979 | .periods_min = 2, | |
980 | .periods_max = 1024, | |
981 | }; | |
982 | ||
983 | static int hw_check_valid_format(struct snd_usb_substream *subs, | |
984 | struct snd_pcm_hw_params *params, | |
985 | struct audioformat *fp) | |
986 | { | |
987 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
988 | struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
989 | struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
990 | struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
015eb0b0 | 991 | struct snd_mask check_fmts; |
e5779998 DM |
992 | unsigned int ptime; |
993 | ||
994 | /* check the format */ | |
015eb0b0 CL |
995 | snd_mask_none(&check_fmts); |
996 | check_fmts.bits[0] = (u32)fp->formats; | |
997 | check_fmts.bits[1] = (u32)(fp->formats >> 32); | |
998 | snd_mask_intersect(&check_fmts, fmts); | |
999 | if (snd_mask_empty(&check_fmts)) { | |
e5779998 DM |
1000 | hwc_debug(" > check: no supported format %d\n", fp->format); |
1001 | return 0; | |
1002 | } | |
1003 | /* check the channels */ | |
1004 | if (fp->channels < ct->min || fp->channels > ct->max) { | |
1005 | hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); | |
1006 | return 0; | |
1007 | } | |
1008 | /* check the rate is within the range */ | |
1009 | if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { | |
1010 | hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); | |
1011 | return 0; | |
1012 | } | |
1013 | if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { | |
1014 | hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); | |
1015 | return 0; | |
1016 | } | |
1017 | /* check whether the period time is >= the data packet interval */ | |
978520b7 | 1018 | if (subs->speed != USB_SPEED_FULL) { |
e5779998 DM |
1019 | ptime = 125 * (1 << fp->datainterval); |
1020 | if (ptime > pt->max || (ptime == pt->max && pt->openmax)) { | |
1021 | hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max); | |
1022 | return 0; | |
1023 | } | |
1024 | } | |
1025 | return 1; | |
1026 | } | |
1027 | ||
1028 | static int hw_rule_rate(struct snd_pcm_hw_params *params, | |
1029 | struct snd_pcm_hw_rule *rule) | |
1030 | { | |
1031 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 1032 | struct audioformat *fp; |
e5779998 DM |
1033 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
1034 | unsigned int rmin, rmax; | |
1035 | int changed; | |
1036 | ||
1037 | hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); | |
1038 | changed = 0; | |
1039 | rmin = rmax = 0; | |
88766f04 | 1040 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1041 | if (!hw_check_valid_format(subs, params, fp)) |
1042 | continue; | |
1043 | if (changed++) { | |
1044 | if (rmin > fp->rate_min) | |
1045 | rmin = fp->rate_min; | |
1046 | if (rmax < fp->rate_max) | |
1047 | rmax = fp->rate_max; | |
1048 | } else { | |
1049 | rmin = fp->rate_min; | |
1050 | rmax = fp->rate_max; | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | if (!changed) { | |
1055 | hwc_debug(" --> get empty\n"); | |
1056 | it->empty = 1; | |
1057 | return -EINVAL; | |
1058 | } | |
1059 | ||
1060 | changed = 0; | |
1061 | if (it->min < rmin) { | |
1062 | it->min = rmin; | |
1063 | it->openmin = 0; | |
1064 | changed = 1; | |
1065 | } | |
1066 | if (it->max > rmax) { | |
1067 | it->max = rmax; | |
1068 | it->openmax = 0; | |
1069 | changed = 1; | |
1070 | } | |
1071 | if (snd_interval_checkempty(it)) { | |
1072 | it->empty = 1; | |
1073 | return -EINVAL; | |
1074 | } | |
1075 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
1076 | return changed; | |
1077 | } | |
1078 | ||
1079 | ||
1080 | static int hw_rule_channels(struct snd_pcm_hw_params *params, | |
1081 | struct snd_pcm_hw_rule *rule) | |
1082 | { | |
1083 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 1084 | struct audioformat *fp; |
e5779998 DM |
1085 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
1086 | unsigned int rmin, rmax; | |
1087 | int changed; | |
1088 | ||
1089 | hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); | |
1090 | changed = 0; | |
1091 | rmin = rmax = 0; | |
88766f04 | 1092 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1093 | if (!hw_check_valid_format(subs, params, fp)) |
1094 | continue; | |
1095 | if (changed++) { | |
1096 | if (rmin > fp->channels) | |
1097 | rmin = fp->channels; | |
1098 | if (rmax < fp->channels) | |
1099 | rmax = fp->channels; | |
1100 | } else { | |
1101 | rmin = fp->channels; | |
1102 | rmax = fp->channels; | |
1103 | } | |
1104 | } | |
1105 | ||
1106 | if (!changed) { | |
1107 | hwc_debug(" --> get empty\n"); | |
1108 | it->empty = 1; | |
1109 | return -EINVAL; | |
1110 | } | |
1111 | ||
1112 | changed = 0; | |
1113 | if (it->min < rmin) { | |
1114 | it->min = rmin; | |
1115 | it->openmin = 0; | |
1116 | changed = 1; | |
1117 | } | |
1118 | if (it->max > rmax) { | |
1119 | it->max = rmax; | |
1120 | it->openmax = 0; | |
1121 | changed = 1; | |
1122 | } | |
1123 | if (snd_interval_checkempty(it)) { | |
1124 | it->empty = 1; | |
1125 | return -EINVAL; | |
1126 | } | |
1127 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
1128 | return changed; | |
1129 | } | |
1130 | ||
1131 | static int hw_rule_format(struct snd_pcm_hw_params *params, | |
1132 | struct snd_pcm_hw_rule *rule) | |
1133 | { | |
1134 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 1135 | struct audioformat *fp; |
e5779998 DM |
1136 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
1137 | u64 fbits; | |
1138 | u32 oldbits[2]; | |
1139 | int changed; | |
1140 | ||
1141 | hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); | |
1142 | fbits = 0; | |
88766f04 | 1143 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1144 | if (!hw_check_valid_format(subs, params, fp)) |
1145 | continue; | |
015eb0b0 | 1146 | fbits |= fp->formats; |
e5779998 DM |
1147 | } |
1148 | ||
1149 | oldbits[0] = fmt->bits[0]; | |
1150 | oldbits[1] = fmt->bits[1]; | |
1151 | fmt->bits[0] &= (u32)fbits; | |
1152 | fmt->bits[1] &= (u32)(fbits >> 32); | |
1153 | if (!fmt->bits[0] && !fmt->bits[1]) { | |
1154 | hwc_debug(" --> get empty\n"); | |
1155 | return -EINVAL; | |
1156 | } | |
1157 | changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); | |
1158 | hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); | |
1159 | return changed; | |
1160 | } | |
1161 | ||
1162 | static int hw_rule_period_time(struct snd_pcm_hw_params *params, | |
1163 | struct snd_pcm_hw_rule *rule) | |
1164 | { | |
1165 | struct snd_usb_substream *subs = rule->private; | |
1166 | struct audioformat *fp; | |
1167 | struct snd_interval *it; | |
1168 | unsigned char min_datainterval; | |
1169 | unsigned int pmin; | |
1170 | int changed; | |
1171 | ||
1172 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
1173 | hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); | |
1174 | min_datainterval = 0xff; | |
1175 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
1176 | if (!hw_check_valid_format(subs, params, fp)) | |
1177 | continue; | |
1178 | min_datainterval = min(min_datainterval, fp->datainterval); | |
1179 | } | |
1180 | if (min_datainterval == 0xff) { | |
a7ce2e0d | 1181 | hwc_debug(" --> get empty\n"); |
e5779998 DM |
1182 | it->empty = 1; |
1183 | return -EINVAL; | |
1184 | } | |
1185 | pmin = 125 * (1 << min_datainterval); | |
1186 | changed = 0; | |
1187 | if (it->min < pmin) { | |
1188 | it->min = pmin; | |
1189 | it->openmin = 0; | |
1190 | changed = 1; | |
1191 | } | |
1192 | if (snd_interval_checkempty(it)) { | |
1193 | it->empty = 1; | |
1194 | return -EINVAL; | |
1195 | } | |
1196 | hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed); | |
1197 | return changed; | |
1198 | } | |
1199 | ||
1200 | /* | |
1201 | * If the device supports unusual bit rates, does the request meet these? | |
1202 | */ | |
1203 | static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, | |
1204 | struct snd_usb_substream *subs) | |
1205 | { | |
1206 | struct audioformat *fp; | |
0717d0f5 | 1207 | int *rate_list; |
e5779998 DM |
1208 | int count = 0, needs_knot = 0; |
1209 | int err; | |
1210 | ||
5cd5d7c4 CL |
1211 | kfree(subs->rate_list.list); |
1212 | subs->rate_list.list = NULL; | |
1213 | ||
e5779998 DM |
1214 | list_for_each_entry(fp, &subs->fmt_list, list) { |
1215 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) | |
1216 | return 0; | |
1217 | count += fp->nr_rates; | |
1218 | if (fp->rates & SNDRV_PCM_RATE_KNOT) | |
1219 | needs_knot = 1; | |
1220 | } | |
1221 | if (!needs_knot) | |
1222 | return 0; | |
1223 | ||
0717d0f5 | 1224 | subs->rate_list.list = rate_list = |
6da2ec56 | 1225 | kmalloc_array(count, sizeof(int), GFP_KERNEL); |
8a8d56b2 JJ |
1226 | if (!subs->rate_list.list) |
1227 | return -ENOMEM; | |
1228 | subs->rate_list.count = count; | |
e5779998 DM |
1229 | subs->rate_list.mask = 0; |
1230 | count = 0; | |
1231 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
1232 | int i; | |
1233 | for (i = 0; i < fp->nr_rates; i++) | |
0717d0f5 | 1234 | rate_list[count++] = fp->rate_table[i]; |
e5779998 DM |
1235 | } |
1236 | err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1237 | &subs->rate_list); | |
1238 | if (err < 0) | |
1239 | return err; | |
1240 | ||
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | ||
1245 | /* | |
1246 | * set up the runtime hardware information. | |
1247 | */ | |
1248 | ||
1249 | static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) | |
1250 | { | |
88766f04 | 1251 | struct audioformat *fp; |
e5779998 DM |
1252 | unsigned int pt, ptmin; |
1253 | int param_period_time_if_needed; | |
1254 | int err; | |
1255 | ||
1256 | runtime->hw.formats = subs->formats; | |
1257 | ||
1258 | runtime->hw.rate_min = 0x7fffffff; | |
1259 | runtime->hw.rate_max = 0; | |
1260 | runtime->hw.channels_min = 256; | |
1261 | runtime->hw.channels_max = 0; | |
1262 | runtime->hw.rates = 0; | |
1263 | ptmin = UINT_MAX; | |
1264 | /* check min/max rates and channels */ | |
88766f04 | 1265 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1266 | runtime->hw.rates |= fp->rates; |
1267 | if (runtime->hw.rate_min > fp->rate_min) | |
1268 | runtime->hw.rate_min = fp->rate_min; | |
1269 | if (runtime->hw.rate_max < fp->rate_max) | |
1270 | runtime->hw.rate_max = fp->rate_max; | |
1271 | if (runtime->hw.channels_min > fp->channels) | |
1272 | runtime->hw.channels_min = fp->channels; | |
1273 | if (runtime->hw.channels_max < fp->channels) | |
1274 | runtime->hw.channels_max = fp->channels; | |
1275 | if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) { | |
1276 | /* FIXME: there might be more than one audio formats... */ | |
1277 | runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = | |
1278 | fp->frame_size; | |
1279 | } | |
1280 | pt = 125 * (1 << fp->datainterval); | |
1281 | ptmin = min(ptmin, pt); | |
1282 | } | |
1283 | ||
1284 | param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME; | |
978520b7 | 1285 | if (subs->speed == USB_SPEED_FULL) |
e5779998 DM |
1286 | /* full speed devices have fixed data packet interval */ |
1287 | ptmin = 1000; | |
1288 | if (ptmin == 1000) | |
1289 | /* if period time doesn't go below 1 ms, no rules needed */ | |
1290 | param_period_time_if_needed = -1; | |
e92be814 TI |
1291 | |
1292 | err = snd_pcm_hw_constraint_minmax(runtime, | |
1293 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1294 | ptmin, UINT_MAX); | |
1295 | if (err < 0) | |
1296 | return err; | |
1297 | ||
1298 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1299 | hw_rule_rate, subs, | |
1300 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1301 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1302 | param_period_time_if_needed, | |
1303 | -1); | |
1304 | if (err < 0) | |
1305 | return err; | |
1306 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1307 | hw_rule_channels, subs, | |
1308 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1309 | SNDRV_PCM_HW_PARAM_RATE, | |
1310 | param_period_time_if_needed, | |
1311 | -1); | |
1312 | if (err < 0) | |
1313 | return err; | |
1314 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1315 | hw_rule_format, subs, | |
1316 | SNDRV_PCM_HW_PARAM_RATE, | |
1317 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1318 | param_period_time_if_needed, | |
1319 | -1); | |
1320 | if (err < 0) | |
1321 | return err; | |
e5779998 DM |
1322 | if (param_period_time_if_needed >= 0) { |
1323 | err = snd_pcm_hw_rule_add(runtime, 0, | |
1324 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1325 | hw_rule_period_time, subs, | |
1326 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1327 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1328 | SNDRV_PCM_HW_PARAM_RATE, | |
1329 | -1); | |
1330 | if (err < 0) | |
e92be814 | 1331 | return err; |
e5779998 | 1332 | } |
e92be814 TI |
1333 | err = snd_usb_pcm_check_knot(runtime, subs); |
1334 | if (err < 0) | |
1335 | return err; | |
88a8516a | 1336 | |
e92be814 | 1337 | return snd_usb_autoresume(subs->stream->chip); |
e5779998 DM |
1338 | } |
1339 | ||
6fddc797 | 1340 | static int snd_usb_pcm_open(struct snd_pcm_substream *substream) |
e5779998 | 1341 | { |
6fddc797 | 1342 | int direction = substream->stream; |
e5779998 DM |
1343 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1344 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1345 | struct snd_usb_substream *subs = &as->substream[direction]; | |
66354f18 | 1346 | int ret; |
e5779998 DM |
1347 | |
1348 | subs->interface = -1; | |
e11b4e0e | 1349 | subs->altset_idx = 0; |
e5779998 DM |
1350 | runtime->hw = snd_usb_hardware; |
1351 | runtime->private_data = subs; | |
1352 | subs->pcm_substream = substream; | |
88a8516a | 1353 | /* runtime PM is also done there */ |
d24f5061 DM |
1354 | |
1355 | /* initialize DSD/DOP context */ | |
1356 | subs->dsd_dop.byte_idx = 0; | |
1357 | subs->dsd_dop.channel = 0; | |
1358 | subs->dsd_dop.marker = 1; | |
1359 | ||
66354f18 SK |
1360 | ret = setup_hw_info(runtime, subs); |
1361 | if (ret == 0) { | |
1362 | ret = snd_media_stream_init(subs, as->pcm, direction); | |
1363 | if (ret) | |
1364 | snd_usb_autosuspend(subs->stream->chip); | |
1365 | } | |
1366 | return ret; | |
e5779998 DM |
1367 | } |
1368 | ||
6fddc797 | 1369 | static int snd_usb_pcm_close(struct snd_pcm_substream *substream) |
e5779998 | 1370 | { |
6fddc797 | 1371 | int direction = substream->stream; |
e5779998 DM |
1372 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1373 | struct snd_usb_substream *subs = &as->substream[direction]; | |
a0a4959e | 1374 | int ret; |
e5779998 | 1375 | |
66354f18 | 1376 | snd_media_stop_pipeline(subs); |
68e67f40 | 1377 | |
8a463225 TI |
1378 | if (!as->chip->keep_iface && |
1379 | subs->interface >= 0 && | |
47ab1545 | 1380 | !snd_usb_lock_shutdown(subs->stream->chip)) { |
68e67f40 DM |
1381 | usb_set_interface(subs->dev, subs->interface, 0); |
1382 | subs->interface = -1; | |
a0a4959e | 1383 | ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D1); |
47ab1545 | 1384 | snd_usb_unlock_shutdown(subs->stream->chip); |
a0a4959e JS |
1385 | if (ret < 0) |
1386 | return ret; | |
68e67f40 DM |
1387 | } |
1388 | ||
e5779998 | 1389 | subs->pcm_substream = NULL; |
88a8516a | 1390 | snd_usb_autosuspend(subs->stream->chip); |
edcd3633 | 1391 | |
68e67f40 | 1392 | return 0; |
edcd3633 DM |
1393 | } |
1394 | ||
1395 | /* Since a URB can handle only a single linear buffer, we must use double | |
1396 | * buffering when the data to be transferred overflows the buffer boundary. | |
1397 | * To avoid inconsistencies when updating hwptr_done, we use double buffering | |
1398 | * for all URBs. | |
1399 | */ | |
1400 | static void retire_capture_urb(struct snd_usb_substream *subs, | |
1401 | struct urb *urb) | |
1402 | { | |
1403 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1404 | unsigned int stride, frames, bytes, oldptr; | |
1405 | int i, period_elapsed = 0; | |
1406 | unsigned long flags; | |
1407 | unsigned char *cp; | |
e4cc6153 PLB |
1408 | int current_frame_number; |
1409 | ||
1410 | /* read frame number here, update pointer in critical section */ | |
1411 | current_frame_number = usb_get_current_frame_number(subs->dev); | |
edcd3633 DM |
1412 | |
1413 | stride = runtime->frame_bits >> 3; | |
1414 | ||
1415 | for (i = 0; i < urb->number_of_packets; i++) { | |
1539d4f8 | 1416 | cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset + subs->pkt_offset_adj; |
edcd3633 | 1417 | if (urb->iso_frame_desc[i].status && printk_ratelimit()) { |
0ba41d91 TI |
1418 | dev_dbg(&subs->dev->dev, "frame %d active: %d\n", |
1419 | i, urb->iso_frame_desc[i].status); | |
edcd3633 DM |
1420 | // continue; |
1421 | } | |
1422 | bytes = urb->iso_frame_desc[i].actual_length; | |
1423 | frames = bytes / stride; | |
1424 | if (!subs->txfr_quirk) | |
1425 | bytes = frames * stride; | |
1426 | if (bytes % (runtime->sample_bits >> 3) != 0) { | |
edcd3633 | 1427 | int oldbytes = bytes; |
edcd3633 | 1428 | bytes = frames * stride; |
377a879d | 1429 | dev_warn_ratelimited(&subs->dev->dev, |
0ba41d91 | 1430 | "Corrected urb data len. %d->%d\n", |
edcd3633 DM |
1431 | oldbytes, bytes); |
1432 | } | |
1433 | /* update the current pointer */ | |
1434 | spin_lock_irqsave(&subs->lock, flags); | |
1435 | oldptr = subs->hwptr_done; | |
1436 | subs->hwptr_done += bytes; | |
1437 | if (subs->hwptr_done >= runtime->buffer_size * stride) | |
1438 | subs->hwptr_done -= runtime->buffer_size * stride; | |
1439 | frames = (bytes + (oldptr % stride)) / stride; | |
1440 | subs->transfer_done += frames; | |
1441 | if (subs->transfer_done >= runtime->period_size) { | |
1442 | subs->transfer_done -= runtime->period_size; | |
1443 | period_elapsed = 1; | |
1444 | } | |
e4cc6153 PLB |
1445 | /* capture delay is by construction limited to one URB, |
1446 | * reset delays here | |
1447 | */ | |
1448 | runtime->delay = subs->last_delay = 0; | |
1449 | ||
1450 | /* realign last_frame_number */ | |
1451 | subs->last_frame_number = current_frame_number; | |
1452 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1453 | ||
edcd3633 DM |
1454 | spin_unlock_irqrestore(&subs->lock, flags); |
1455 | /* copy a data chunk */ | |
1456 | if (oldptr + bytes > runtime->buffer_size * stride) { | |
1457 | unsigned int bytes1 = | |
1458 | runtime->buffer_size * stride - oldptr; | |
1459 | memcpy(runtime->dma_area + oldptr, cp, bytes1); | |
1460 | memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1); | |
1461 | } else { | |
1462 | memcpy(runtime->dma_area + oldptr, cp, bytes); | |
1463 | } | |
1464 | } | |
1465 | ||
1466 | if (period_elapsed) | |
1467 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1468 | } | |
1469 | ||
d24f5061 DM |
1470 | static inline void fill_playback_urb_dsd_dop(struct snd_usb_substream *subs, |
1471 | struct urb *urb, unsigned int bytes) | |
1472 | { | |
1473 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1474 | unsigned int stride = runtime->frame_bits >> 3; | |
1475 | unsigned int dst_idx = 0; | |
1476 | unsigned int src_idx = subs->hwptr_done; | |
1477 | unsigned int wrap = runtime->buffer_size * stride; | |
1478 | u8 *dst = urb->transfer_buffer; | |
1479 | u8 *src = runtime->dma_area; | |
1480 | u8 marker[] = { 0x05, 0xfa }; | |
1481 | ||
1482 | /* | |
1483 | * The DSP DOP format defines a way to transport DSD samples over | |
1484 | * normal PCM data endpoints. It requires stuffing of marker bytes | |
1485 | * (0x05 and 0xfa, alternating per sample frame), and then expects | |
1486 | * 2 additional bytes of actual payload. The whole frame is stored | |
1487 | * LSB. | |
1488 | * | |
1489 | * Hence, for a stereo transport, the buffer layout looks like this, | |
1490 | * where L refers to left channel samples and R to right. | |
1491 | * | |
1492 | * L1 L2 0x05 R1 R2 0x05 L3 L4 0xfa R3 R4 0xfa | |
1493 | * L5 L6 0x05 R5 R6 0x05 L7 L8 0xfa R7 R8 0xfa | |
1494 | * ..... | |
1495 | * | |
1496 | */ | |
1497 | ||
1498 | while (bytes--) { | |
1499 | if (++subs->dsd_dop.byte_idx == 3) { | |
1500 | /* frame boundary? */ | |
1501 | dst[dst_idx++] = marker[subs->dsd_dop.marker]; | |
1502 | src_idx += 2; | |
1503 | subs->dsd_dop.byte_idx = 0; | |
1504 | ||
1505 | if (++subs->dsd_dop.channel % runtime->channels == 0) { | |
1506 | /* alternate the marker */ | |
1507 | subs->dsd_dop.marker++; | |
1508 | subs->dsd_dop.marker %= ARRAY_SIZE(marker); | |
1509 | subs->dsd_dop.channel = 0; | |
1510 | } | |
1511 | } else { | |
1512 | /* stuff the DSD payload */ | |
1513 | int idx = (src_idx + subs->dsd_dop.byte_idx - 1) % wrap; | |
44dcbbb1 DM |
1514 | |
1515 | if (subs->cur_audiofmt->dsd_bitrev) | |
1516 | dst[dst_idx++] = bitrev8(src[idx]); | |
1517 | else | |
1518 | dst[dst_idx++] = src[idx]; | |
1519 | ||
d24f5061 DM |
1520 | subs->hwptr_done++; |
1521 | } | |
1522 | } | |
4c4e4391 RW |
1523 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1524 | subs->hwptr_done -= runtime->buffer_size * stride; | |
d24f5061 DM |
1525 | } |
1526 | ||
b97a9369 RW |
1527 | static void copy_to_urb(struct snd_usb_substream *subs, struct urb *urb, |
1528 | int offset, int stride, unsigned int bytes) | |
07a40c2f RW |
1529 | { |
1530 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1531 | ||
1532 | if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { | |
1533 | /* err, the transferred area goes over buffer boundary. */ | |
1534 | unsigned int bytes1 = | |
1535 | runtime->buffer_size * stride - subs->hwptr_done; | |
b97a9369 | 1536 | memcpy(urb->transfer_buffer + offset, |
07a40c2f | 1537 | runtime->dma_area + subs->hwptr_done, bytes1); |
b97a9369 | 1538 | memcpy(urb->transfer_buffer + offset + bytes1, |
07a40c2f RW |
1539 | runtime->dma_area, bytes - bytes1); |
1540 | } else { | |
b97a9369 | 1541 | memcpy(urb->transfer_buffer + offset, |
07a40c2f RW |
1542 | runtime->dma_area + subs->hwptr_done, bytes); |
1543 | } | |
1544 | subs->hwptr_done += bytes; | |
4c4e4391 RW |
1545 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1546 | subs->hwptr_done -= runtime->buffer_size * stride; | |
07a40c2f RW |
1547 | } |
1548 | ||
e0570446 RW |
1549 | static unsigned int copy_to_urb_quirk(struct snd_usb_substream *subs, |
1550 | struct urb *urb, int stride, | |
1551 | unsigned int bytes) | |
1552 | { | |
1553 | __le32 packet_length; | |
1554 | int i; | |
1555 | ||
1556 | /* Put __le32 length descriptor at start of each packet. */ | |
1557 | for (i = 0; i < urb->number_of_packets; i++) { | |
1558 | unsigned int length = urb->iso_frame_desc[i].length; | |
1559 | unsigned int offset = urb->iso_frame_desc[i].offset; | |
1560 | ||
1561 | packet_length = cpu_to_le32(length); | |
1562 | offset += i * sizeof(packet_length); | |
1563 | urb->iso_frame_desc[i].offset = offset; | |
1564 | urb->iso_frame_desc[i].length += sizeof(packet_length); | |
1565 | memcpy(urb->transfer_buffer + offset, | |
1566 | &packet_length, sizeof(packet_length)); | |
1567 | copy_to_urb(subs, urb, offset + sizeof(packet_length), | |
1568 | stride, length); | |
1569 | } | |
1570 | /* Adjust transfer size accordingly. */ | |
1571 | bytes += urb->number_of_packets * sizeof(packet_length); | |
1572 | return bytes; | |
1573 | } | |
1574 | ||
edcd3633 DM |
1575 | static void prepare_playback_urb(struct snd_usb_substream *subs, |
1576 | struct urb *urb) | |
1577 | { | |
1578 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
245baf98 | 1579 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
edcd3633 DM |
1580 | struct snd_urb_ctx *ctx = urb->context; |
1581 | unsigned int counts, frames, bytes; | |
1582 | int i, stride, period_elapsed = 0; | |
1583 | unsigned long flags; | |
1584 | ||
1585 | stride = runtime->frame_bits >> 3; | |
1586 | ||
1587 | frames = 0; | |
1588 | urb->number_of_packets = 0; | |
1589 | spin_lock_irqsave(&subs->lock, flags); | |
976b6c06 | 1590 | subs->frame_limit += ep->max_urb_frames; |
edcd3633 | 1591 | for (i = 0; i < ctx->packets; i++) { |
245baf98 DM |
1592 | if (ctx->packet_size[i]) |
1593 | counts = ctx->packet_size[i]; | |
f0bd62b6 AT |
1594 | else if (ep->sync_master) |
1595 | counts = snd_usb_endpoint_slave_next_packet_size(ep); | |
245baf98 DM |
1596 | else |
1597 | counts = snd_usb_endpoint_next_packet_size(ep); | |
1598 | ||
edcd3633 | 1599 | /* set up descriptor */ |
8a2a74d2 DM |
1600 | urb->iso_frame_desc[i].offset = frames * ep->stride; |
1601 | urb->iso_frame_desc[i].length = counts * ep->stride; | |
edcd3633 DM |
1602 | frames += counts; |
1603 | urb->number_of_packets++; | |
1604 | subs->transfer_done += counts; | |
1605 | if (subs->transfer_done >= runtime->period_size) { | |
1606 | subs->transfer_done -= runtime->period_size; | |
976b6c06 | 1607 | subs->frame_limit = 0; |
edcd3633 DM |
1608 | period_elapsed = 1; |
1609 | if (subs->fmt_type == UAC_FORMAT_TYPE_II) { | |
1610 | if (subs->transfer_done > 0) { | |
1611 | /* FIXME: fill-max mode is not | |
1612 | * supported yet */ | |
1613 | frames -= subs->transfer_done; | |
1614 | counts -= subs->transfer_done; | |
1615 | urb->iso_frame_desc[i].length = | |
8a2a74d2 | 1616 | counts * ep->stride; |
edcd3633 DM |
1617 | subs->transfer_done = 0; |
1618 | } | |
1619 | i++; | |
1620 | if (i < ctx->packets) { | |
1621 | /* add a transfer delimiter */ | |
1622 | urb->iso_frame_desc[i].offset = | |
8a2a74d2 | 1623 | frames * ep->stride; |
edcd3633 DM |
1624 | urb->iso_frame_desc[i].length = 0; |
1625 | urb->number_of_packets++; | |
1626 | } | |
1627 | break; | |
1628 | } | |
1629 | } | |
976b6c06 AS |
1630 | /* finish at the period boundary or after enough frames */ |
1631 | if ((period_elapsed || | |
1632 | subs->transfer_done >= subs->frame_limit) && | |
1633 | !snd_usb_endpoint_implicit_feedback_sink(ep)) | |
edcd3633 DM |
1634 | break; |
1635 | } | |
8a2a74d2 | 1636 | bytes = frames * ep->stride; |
d24f5061 DM |
1637 | |
1638 | if (unlikely(subs->pcm_format == SNDRV_PCM_FORMAT_DSD_U16_LE && | |
1639 | subs->cur_audiofmt->dsd_dop)) { | |
1640 | fill_playback_urb_dsd_dop(subs, urb, bytes); | |
44dcbbb1 DM |
1641 | } else if (unlikely(subs->pcm_format == SNDRV_PCM_FORMAT_DSD_U8 && |
1642 | subs->cur_audiofmt->dsd_bitrev)) { | |
1643 | /* bit-reverse the bytes */ | |
1644 | u8 *buf = urb->transfer_buffer; | |
1645 | for (i = 0; i < bytes; i++) { | |
1646 | int idx = (subs->hwptr_done + i) | |
1647 | % (runtime->buffer_size * stride); | |
1648 | buf[i] = bitrev8(runtime->dma_area[idx]); | |
1649 | } | |
1650 | ||
1651 | subs->hwptr_done += bytes; | |
4c4e4391 RW |
1652 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1653 | subs->hwptr_done -= runtime->buffer_size * stride; | |
edcd3633 | 1654 | } else { |
d24f5061 | 1655 | /* usual PCM */ |
e0570446 RW |
1656 | if (!subs->tx_length_quirk) |
1657 | copy_to_urb(subs, urb, 0, stride, bytes); | |
1658 | else | |
1659 | bytes = copy_to_urb_quirk(subs, urb, stride, bytes); | |
1660 | /* bytes is now amount of outgoing data */ | |
edcd3633 | 1661 | } |
d24f5061 | 1662 | |
fbcfbf5f DM |
1663 | /* update delay with exact number of samples queued */ |
1664 | runtime->delay = subs->last_delay; | |
edcd3633 | 1665 | runtime->delay += frames; |
fbcfbf5f DM |
1666 | subs->last_delay = runtime->delay; |
1667 | ||
1668 | /* realign last_frame_number */ | |
1669 | subs->last_frame_number = usb_get_current_frame_number(subs->dev); | |
1670 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1671 | ||
ea33d359 PLB |
1672 | if (subs->trigger_tstamp_pending_update) { |
1673 | /* this is the first actual URB submitted, | |
1674 | * update trigger timestamp to reflect actual start time | |
1675 | */ | |
1676 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); | |
1677 | subs->trigger_tstamp_pending_update = false; | |
1678 | } | |
1679 | ||
edcd3633 DM |
1680 | spin_unlock_irqrestore(&subs->lock, flags); |
1681 | urb->transfer_buffer_length = bytes; | |
1682 | if (period_elapsed) | |
1683 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1684 | } | |
1685 | ||
1686 | /* | |
1687 | * process after playback data complete | |
1688 | * - decrease the delay count again | |
1689 | */ | |
1690 | static void retire_playback_urb(struct snd_usb_substream *subs, | |
1691 | struct urb *urb) | |
1692 | { | |
1693 | unsigned long flags; | |
1694 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
8a2a74d2 DM |
1695 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
1696 | int processed = urb->transfer_buffer_length / ep->stride; | |
fbcfbf5f | 1697 | int est_delay; |
edcd3633 | 1698 | |
1213a205 TI |
1699 | /* ignore the delay accounting when procssed=0 is given, i.e. |
1700 | * silent payloads are procssed before handling the actual data | |
1701 | */ | |
1702 | if (!processed) | |
1703 | return; | |
1704 | ||
edcd3633 | 1705 | spin_lock_irqsave(&subs->lock, flags); |
48779a0b TI |
1706 | if (!subs->last_delay) |
1707 | goto out; /* short path */ | |
1708 | ||
fbcfbf5f DM |
1709 | est_delay = snd_usb_pcm_delay(subs, runtime->rate); |
1710 | /* update delay with exact number of samples played */ | |
1711 | if (processed > subs->last_delay) | |
1712 | subs->last_delay = 0; | |
edcd3633 | 1713 | else |
fbcfbf5f DM |
1714 | subs->last_delay -= processed; |
1715 | runtime->delay = subs->last_delay; | |
1716 | ||
1717 | /* | |
1718 | * Report when delay estimate is off by more than 2ms. | |
1719 | * The error should be lower than 2ms since the estimate relies | |
1720 | * on two reads of a counter updated every ms. | |
1721 | */ | |
b7a77235 SE |
1722 | if (abs(est_delay - subs->last_delay) * 1000 > runtime->rate * 2) |
1723 | dev_dbg_ratelimited(&subs->dev->dev, | |
0ba41d91 | 1724 | "delay: estimated %d, actual %d\n", |
fbcfbf5f DM |
1725 | est_delay, subs->last_delay); |
1726 | ||
48779a0b TI |
1727 | if (!subs->running) { |
1728 | /* update last_frame_number for delay counting here since | |
1729 | * prepare_playback_urb won't be called during pause | |
1730 | */ | |
1731 | subs->last_frame_number = | |
1732 | usb_get_current_frame_number(subs->dev) & 0xff; | |
1733 | } | |
1734 | ||
1735 | out: | |
edcd3633 | 1736 | spin_unlock_irqrestore(&subs->lock, flags); |
e5779998 DM |
1737 | } |
1738 | ||
edcd3633 DM |
1739 | static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, |
1740 | int cmd) | |
1741 | { | |
1742 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1743 | ||
1744 | switch (cmd) { | |
1745 | case SNDRV_PCM_TRIGGER_START: | |
ea33d359 | 1746 | subs->trigger_tstamp_pending_update = true; |
d5e77fca | 1747 | /* fall through */ |
edcd3633 DM |
1748 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
1749 | subs->data_endpoint->prepare_data_urb = prepare_playback_urb; | |
1750 | subs->data_endpoint->retire_data_urb = retire_playback_urb; | |
97f8d3b6 | 1751 | subs->running = 1; |
edcd3633 DM |
1752 | return 0; |
1753 | case SNDRV_PCM_TRIGGER_STOP: | |
dc5eafe7 | 1754 | stop_endpoints(subs); |
97f8d3b6 | 1755 | subs->running = 0; |
edcd3633 DM |
1756 | return 0; |
1757 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1758 | subs->data_endpoint->prepare_data_urb = NULL; | |
48779a0b TI |
1759 | /* keep retire_data_urb for delay calculation */ |
1760 | subs->data_endpoint->retire_data_urb = retire_playback_urb; | |
97f8d3b6 | 1761 | subs->running = 0; |
edcd3633 | 1762 | return 0; |
92adc96f HW |
1763 | case SNDRV_PCM_TRIGGER_SUSPEND: |
1764 | if (subs->stream->chip->setup_fmt_after_resume_quirk) { | |
a032ff0e | 1765 | stop_endpoints(subs); |
92adc96f HW |
1766 | subs->need_setup_fmt = true; |
1767 | return 0; | |
1768 | } | |
1769 | break; | |
edcd3633 DM |
1770 | } |
1771 | ||
1772 | return -EINVAL; | |
1773 | } | |
1774 | ||
afe25967 DM |
1775 | static int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, |
1776 | int cmd) | |
edcd3633 DM |
1777 | { |
1778 | int err; | |
1779 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1780 | ||
1781 | switch (cmd) { | |
1782 | case SNDRV_PCM_TRIGGER_START: | |
1d0f9530 | 1783 | err = start_endpoints(subs); |
edcd3633 DM |
1784 | if (err < 0) |
1785 | return err; | |
1786 | ||
1787 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1788 | subs->running = 1; |
edcd3633 DM |
1789 | return 0; |
1790 | case SNDRV_PCM_TRIGGER_STOP: | |
dc5eafe7 | 1791 | stop_endpoints(subs); |
ff58bbc7 | 1792 | subs->data_endpoint->retire_data_urb = NULL; |
97f8d3b6 | 1793 | subs->running = 0; |
edcd3633 DM |
1794 | return 0; |
1795 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1796 | subs->data_endpoint->retire_data_urb = NULL; | |
97f8d3b6 | 1797 | subs->running = 0; |
edcd3633 DM |
1798 | return 0; |
1799 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1800 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1801 | subs->running = 1; |
edcd3633 | 1802 | return 0; |
92adc96f HW |
1803 | case SNDRV_PCM_TRIGGER_SUSPEND: |
1804 | if (subs->stream->chip->setup_fmt_after_resume_quirk) { | |
a032ff0e | 1805 | stop_endpoints(subs); |
92adc96f HW |
1806 | subs->need_setup_fmt = true; |
1807 | return 0; | |
1808 | } | |
1809 | break; | |
edcd3633 DM |
1810 | } |
1811 | ||
1812 | return -EINVAL; | |
1813 | } | |
1814 | ||
31cb1fb4 | 1815 | static const struct snd_pcm_ops snd_usb_playback_ops = { |
6fddc797 TI |
1816 | .open = snd_usb_pcm_open, |
1817 | .close = snd_usb_pcm_close, | |
e5779998 DM |
1818 | .hw_params = snd_usb_hw_params, |
1819 | .hw_free = snd_usb_hw_free, | |
1820 | .prepare = snd_usb_pcm_prepare, | |
1821 | .trigger = snd_usb_substream_playback_trigger, | |
dc5eafe7 | 1822 | .sync_stop = snd_usb_pcm_sync_stop, |
e5779998 | 1823 | .pointer = snd_usb_pcm_pointer, |
e5779998 DM |
1824 | }; |
1825 | ||
31cb1fb4 | 1826 | static const struct snd_pcm_ops snd_usb_capture_ops = { |
6fddc797 TI |
1827 | .open = snd_usb_pcm_open, |
1828 | .close = snd_usb_pcm_close, | |
e5779998 DM |
1829 | .hw_params = snd_usb_hw_params, |
1830 | .hw_free = snd_usb_hw_free, | |
1831 | .prepare = snd_usb_pcm_prepare, | |
1832 | .trigger = snd_usb_substream_capture_trigger, | |
dc5eafe7 | 1833 | .sync_stop = snd_usb_pcm_sync_stop, |
e5779998 | 1834 | .pointer = snd_usb_pcm_pointer, |
f274baa4 TI |
1835 | }; |
1836 | ||
e5779998 DM |
1837 | void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream) |
1838 | { | |
f274baa4 TI |
1839 | const struct snd_pcm_ops *ops; |
1840 | ||
b315997d | 1841 | ops = stream == SNDRV_PCM_STREAM_PLAYBACK ? |
f274baa4 | 1842 | &snd_usb_playback_ops : &snd_usb_capture_ops; |
f274baa4 TI |
1843 | snd_pcm_set_ops(pcm, stream, ops); |
1844 | } | |
1845 | ||
1846 | void snd_usb_preallocate_buffer(struct snd_usb_substream *subs) | |
1847 | { | |
1848 | struct snd_pcm *pcm = subs->stream->pcm; | |
1849 | struct snd_pcm_substream *s = pcm->streams[subs->direction].substream; | |
1850 | struct device *dev = subs->dev->bus->controller; | |
1851 | ||
b315997d | 1852 | if (snd_usb_use_vmalloc) |
6dd9486c TI |
1853 | snd_pcm_set_managed_buffer(s, SNDRV_DMA_TYPE_VMALLOC, |
1854 | NULL, 0, 0); | |
b315997d | 1855 | else |
6dd9486c TI |
1856 | snd_pcm_set_managed_buffer(s, SNDRV_DMA_TYPE_DEV_SG, |
1857 | dev, 64*1024, 512*1024); | |
e5779998 | 1858 | } |