Commit | Line | Data |
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e5779998 DM |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
15 | */ | |
16 | ||
17 | #include <linux/init.h> | |
9966ddaf | 18 | #include <linux/slab.h> |
44dcbbb1 | 19 | #include <linux/bitrev.h> |
edcd3633 | 20 | #include <linux/ratelimit.h> |
e5779998 DM |
21 | #include <linux/usb.h> |
22 | #include <linux/usb/audio.h> | |
7e847894 | 23 | #include <linux/usb/audio-v2.h> |
e5779998 DM |
24 | |
25 | #include <sound/core.h> | |
26 | #include <sound/pcm.h> | |
27 | #include <sound/pcm_params.h> | |
28 | ||
29 | #include "usbaudio.h" | |
30 | #include "card.h" | |
31 | #include "quirks.h" | |
32 | #include "debug.h" | |
c731bc96 | 33 | #include "endpoint.h" |
e5779998 DM |
34 | #include "helper.h" |
35 | #include "pcm.h" | |
79f920fb | 36 | #include "clock.h" |
88a8516a | 37 | #include "power.h" |
e5779998 | 38 | |
edcd3633 DM |
39 | #define SUBSTREAM_FLAG_DATA_EP_STARTED 0 |
40 | #define SUBSTREAM_FLAG_SYNC_EP_STARTED 1 | |
41 | ||
294c4fb8 PLB |
42 | /* return the estimated delay based on USB frame counters */ |
43 | snd_pcm_uframes_t snd_usb_pcm_delay(struct snd_usb_substream *subs, | |
44 | unsigned int rate) | |
45 | { | |
46 | int current_frame_number; | |
47 | int frame_diff; | |
48 | int est_delay; | |
49 | ||
48779a0b TI |
50 | if (!subs->last_delay) |
51 | return 0; /* short path */ | |
52 | ||
294c4fb8 PLB |
53 | current_frame_number = usb_get_current_frame_number(subs->dev); |
54 | /* | |
55 | * HCD implementations use different widths, use lower 8 bits. | |
56 | * The delay will be managed up to 256ms, which is more than | |
57 | * enough | |
58 | */ | |
59 | frame_diff = (current_frame_number - subs->last_frame_number) & 0xff; | |
60 | ||
61 | /* Approximation based on number of samples per USB frame (ms), | |
62 | some truncation for 44.1 but the estimate is good enough */ | |
e4cc6153 PLB |
63 | est_delay = frame_diff * rate / 1000; |
64 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) | |
65 | est_delay = subs->last_delay - est_delay; | |
66 | else | |
67 | est_delay = subs->last_delay + est_delay; | |
68 | ||
294c4fb8 PLB |
69 | if (est_delay < 0) |
70 | est_delay = 0; | |
71 | return est_delay; | |
72 | } | |
73 | ||
e5779998 DM |
74 | /* |
75 | * return the current pcm pointer. just based on the hwptr_done value. | |
76 | */ | |
77 | static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream) | |
78 | { | |
79 | struct snd_usb_substream *subs; | |
80 | unsigned int hwptr_done; | |
81 | ||
82 | subs = (struct snd_usb_substream *)substream->runtime->private_data; | |
47ab1545 | 83 | if (atomic_read(&subs->stream->chip->shutdown)) |
978520b7 | 84 | return SNDRV_PCM_POS_XRUN; |
e5779998 DM |
85 | spin_lock(&subs->lock); |
86 | hwptr_done = subs->hwptr_done; | |
e4cc6153 | 87 | substream->runtime->delay = snd_usb_pcm_delay(subs, |
294c4fb8 | 88 | substream->runtime->rate); |
e5779998 DM |
89 | spin_unlock(&subs->lock); |
90 | return hwptr_done / (substream->runtime->frame_bits >> 3); | |
91 | } | |
92 | ||
93 | /* | |
94 | * find a matching audio format | |
95 | */ | |
61a70950 | 96 | static struct audioformat *find_format(struct snd_usb_substream *subs) |
e5779998 | 97 | { |
88766f04 | 98 | struct audioformat *fp; |
e5779998 DM |
99 | struct audioformat *found = NULL; |
100 | int cur_attr = 0, attr; | |
101 | ||
88766f04 | 102 | list_for_each_entry(fp, &subs->fmt_list, list) { |
74c34ca1 | 103 | if (!(fp->formats & pcm_format_to_bits(subs->pcm_format))) |
015eb0b0 | 104 | continue; |
61a70950 | 105 | if (fp->channels != subs->channels) |
e5779998 | 106 | continue; |
61a70950 DR |
107 | if (subs->cur_rate < fp->rate_min || |
108 | subs->cur_rate > fp->rate_max) | |
e5779998 DM |
109 | continue; |
110 | if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { | |
111 | unsigned int i; | |
112 | for (i = 0; i < fp->nr_rates; i++) | |
61a70950 | 113 | if (fp->rate_table[i] == subs->cur_rate) |
e5779998 DM |
114 | break; |
115 | if (i >= fp->nr_rates) | |
116 | continue; | |
117 | } | |
118 | attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
119 | if (! found) { | |
120 | found = fp; | |
121 | cur_attr = attr; | |
122 | continue; | |
123 | } | |
124 | /* avoid async out and adaptive in if the other method | |
125 | * supports the same format. | |
126 | * this is a workaround for the case like | |
127 | * M-audio audiophile USB. | |
128 | */ | |
129 | if (attr != cur_attr) { | |
130 | if ((attr == USB_ENDPOINT_SYNC_ASYNC && | |
131 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
132 | (attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
133 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) | |
134 | continue; | |
135 | if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC && | |
136 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
137 | (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
138 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { | |
139 | found = fp; | |
140 | cur_attr = attr; | |
141 | continue; | |
142 | } | |
143 | } | |
144 | /* find the format with the largest max. packet size */ | |
145 | if (fp->maxpacksize > found->maxpacksize) { | |
146 | found = fp; | |
147 | cur_attr = attr; | |
148 | } | |
149 | } | |
150 | return found; | |
151 | } | |
152 | ||
767d75ad DM |
153 | static int init_pitch_v1(struct snd_usb_audio *chip, int iface, |
154 | struct usb_host_interface *alts, | |
155 | struct audioformat *fmt) | |
156 | { | |
157 | struct usb_device *dev = chip->dev; | |
158 | unsigned int ep; | |
159 | unsigned char data[1]; | |
160 | int err; | |
161 | ||
447d6275 TI |
162 | if (get_iface_desc(alts)->bNumEndpoints < 1) |
163 | return -EINVAL; | |
767d75ad DM |
164 | ep = get_endpoint(alts, 0)->bEndpointAddress; |
165 | ||
767d75ad DM |
166 | data[0] = 1; |
167 | if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, | |
168 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, | |
169 | UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, | |
17d900c4 | 170 | data, sizeof(data))) < 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 DM |
187 | data[0] = 1; |
188 | if ((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, | |
17d900c4 | 191 | data, sizeof(data))) < 0) { |
0ba41d91 TI |
192 | usb_audio_err(chip, "%d:%d: cannot set enable PITCH (v2)\n", |
193 | iface, fmt->altsetting); | |
92c25611 DM |
194 | return err; |
195 | } | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
e5779998 | 200 | /* |
92c25611 | 201 | * initialize the pitch control and sample rate |
e5779998 | 202 | */ |
767d75ad | 203 | int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface, |
e5779998 DM |
204 | struct usb_host_interface *alts, |
205 | struct audioformat *fmt) | |
206 | { | |
92c25611 DM |
207 | /* if endpoint doesn't have pitch control, bail out */ |
208 | if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) | |
209 | return 0; | |
210 | ||
8f898e92 | 211 | switch (fmt->protocol) { |
767d75ad | 212 | case UAC_VERSION_1: |
a2acad82 | 213 | default: |
767d75ad DM |
214 | return init_pitch_v1(chip, iface, alts, fmt); |
215 | ||
216 | case UAC_VERSION_2: | |
92c25611 | 217 | return init_pitch_v2(chip, iface, alts, fmt); |
767d75ad | 218 | } |
767d75ad DM |
219 | } |
220 | ||
1d0f9530 | 221 | static int start_endpoints(struct snd_usb_substream *subs) |
edcd3633 DM |
222 | { |
223 | int err; | |
224 | ||
225 | if (!subs->data_endpoint) | |
226 | return -EINVAL; | |
227 | ||
228 | if (!test_and_set_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) { | |
229 | struct snd_usb_endpoint *ep = subs->data_endpoint; | |
230 | ||
0ba41d91 | 231 | dev_dbg(&subs->dev->dev, "Starting data EP @%p\n", ep); |
edcd3633 DM |
232 | |
233 | ep->data_subs = subs; | |
1d0f9530 | 234 | err = snd_usb_endpoint_start(ep); |
edcd3633 DM |
235 | if (err < 0) { |
236 | clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags); | |
237 | return err; | |
238 | } | |
239 | } | |
240 | ||
241 | if (subs->sync_endpoint && | |
242 | !test_and_set_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) { | |
243 | struct snd_usb_endpoint *ep = subs->sync_endpoint; | |
244 | ||
2e4a263c | 245 | if (subs->data_endpoint->iface != subs->sync_endpoint->iface || |
df23a246 | 246 | subs->data_endpoint->altsetting != subs->sync_endpoint->altsetting) { |
2e4a263c DM |
247 | err = usb_set_interface(subs->dev, |
248 | subs->sync_endpoint->iface, | |
df23a246 | 249 | subs->sync_endpoint->altsetting); |
2e4a263c | 250 | if (err < 0) { |
06613f54 | 251 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); |
0ba41d91 TI |
252 | dev_err(&subs->dev->dev, |
253 | "%d:%d: cannot set interface (%d)\n", | |
2e4a263c | 254 | subs->sync_endpoint->iface, |
df23a246 | 255 | subs->sync_endpoint->altsetting, err); |
2e4a263c DM |
256 | return -EIO; |
257 | } | |
258 | } | |
259 | ||
0ba41d91 | 260 | dev_dbg(&subs->dev->dev, "Starting sync EP @%p\n", ep); |
edcd3633 DM |
261 | |
262 | ep->sync_slave = subs->data_endpoint; | |
1d0f9530 | 263 | err = snd_usb_endpoint_start(ep); |
edcd3633 DM |
264 | if (err < 0) { |
265 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); | |
266 | return err; | |
267 | } | |
268 | } | |
269 | ||
270 | return 0; | |
271 | } | |
272 | ||
a9bb3626 | 273 | static void stop_endpoints(struct snd_usb_substream *subs, bool wait) |
edcd3633 DM |
274 | { |
275 | if (test_and_clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) | |
b2eb950d | 276 | snd_usb_endpoint_stop(subs->sync_endpoint); |
edcd3633 DM |
277 | |
278 | if (test_and_clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) | |
b2eb950d TI |
279 | snd_usb_endpoint_stop(subs->data_endpoint); |
280 | ||
281 | if (wait) { | |
282 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); | |
283 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
284 | } | |
edcd3633 DM |
285 | } |
286 | ||
ba7c2be1 CL |
287 | static int search_roland_implicit_fb(struct usb_device *dev, int ifnum, |
288 | unsigned int altsetting, | |
289 | struct usb_host_interface **alts, | |
290 | unsigned int *ep) | |
291 | { | |
292 | struct usb_interface *iface; | |
293 | struct usb_interface_descriptor *altsd; | |
294 | struct usb_endpoint_descriptor *epd; | |
295 | ||
296 | iface = usb_ifnum_to_if(dev, ifnum); | |
297 | if (!iface || iface->num_altsetting < altsetting + 1) | |
298 | return -ENOENT; | |
299 | *alts = &iface->altsetting[altsetting]; | |
300 | altsd = get_iface_desc(*alts); | |
301 | if (altsd->bAlternateSetting != altsetting || | |
302 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC || | |
303 | (altsd->bInterfaceSubClass != 2 && | |
304 | altsd->bInterfaceProtocol != 2 ) || | |
305 | altsd->bNumEndpoints < 1) | |
306 | return -ENOENT; | |
307 | epd = get_endpoint(*alts, 0); | |
308 | if (!usb_endpoint_is_isoc_in(epd) || | |
309 | (epd->bmAttributes & USB_ENDPOINT_USAGE_MASK) != | |
310 | USB_ENDPOINT_USAGE_IMPLICIT_FB) | |
311 | return -ENOENT; | |
312 | *ep = epd->bEndpointAddress; | |
313 | return 0; | |
314 | } | |
315 | ||
a60945fd EZ |
316 | static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs, |
317 | struct usb_device *dev, | |
318 | struct usb_interface_descriptor *altsd, | |
319 | unsigned int attr) | |
e5779998 | 320 | { |
a60945fd | 321 | struct usb_host_interface *alts; |
e5779998 | 322 | struct usb_interface *iface; |
a60945fd | 323 | unsigned int ep; |
103e9625 | 324 | unsigned int ifnum; |
c75a8a7a | 325 | |
914273c7 EZ |
326 | /* Implicit feedback sync EPs consumers are always playback EPs */ |
327 | if (subs->direction != SNDRV_PCM_STREAM_PLAYBACK) | |
328 | return 0; | |
329 | ||
c75a8a7a | 330 | switch (subs->stream->chip->usb_id) { |
ca10a7eb | 331 | case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ |
e9a25e04 | 332 | case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ |
914273c7 | 333 | ep = 0x81; |
103e9625 AA |
334 | ifnum = 3; |
335 | goto add_sync_ep_from_ifnum; | |
c75a8a7a DM |
336 | case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */ |
337 | case USB_ID(0x0763, 0x2081): | |
914273c7 | 338 | ep = 0x81; |
103e9625 AA |
339 | ifnum = 2; |
340 | goto add_sync_ep_from_ifnum; | |
341 | case USB_ID(0x2466, 0x8003): /* Fractal Audio Axe-Fx II */ | |
17f08b0d | 342 | ep = 0x86; |
103e9625 AA |
343 | ifnum = 2; |
344 | goto add_sync_ep_from_ifnum; | |
91a8561d AA |
345 | case USB_ID(0x2466, 0x8010): /* Fractal Audio Axe-Fx III */ |
346 | ep = 0x81; | |
347 | ifnum = 2; | |
348 | goto add_sync_ep_from_ifnum; | |
103e9625 | 349 | case USB_ID(0x1397, 0x0002): /* Behringer UFX1204 */ |
5e35dc03 | 350 | ep = 0x81; |
103e9625 AA |
351 | ifnum = 1; |
352 | goto add_sync_ep_from_ifnum; | |
c75a8a7a | 353 | } |
103e9625 | 354 | |
914273c7 | 355 | if (attr == USB_ENDPOINT_SYNC_ASYNC && |
ba7c2be1 CL |
356 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && |
357 | altsd->bInterfaceProtocol == 2 && | |
358 | altsd->bNumEndpoints == 1 && | |
359 | USB_ID_VENDOR(subs->stream->chip->usb_id) == 0x0582 /* Roland */ && | |
360 | search_roland_implicit_fb(dev, altsd->bInterfaceNumber + 1, | |
361 | altsd->bAlternateSetting, | |
362 | &alts, &ep) >= 0) { | |
ba7c2be1 CL |
363 | goto add_sync_ep; |
364 | } | |
edcd3633 | 365 | |
a60945fd EZ |
366 | /* No quirk */ |
367 | return 0; | |
368 | ||
103e9625 AA |
369 | add_sync_ep_from_ifnum: |
370 | iface = usb_ifnum_to_if(dev, ifnum); | |
371 | ||
372 | if (!iface || iface->num_altsetting == 0) | |
373 | return -EINVAL; | |
374 | ||
375 | alts = &iface->altsetting[1]; | |
376 | ||
a60945fd EZ |
377 | add_sync_ep: |
378 | subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, | |
379 | alts, ep, !subs->direction, | |
88abb8ef | 380 | SND_USB_ENDPOINT_TYPE_DATA); |
a60945fd EZ |
381 | if (!subs->sync_endpoint) |
382 | return -EINVAL; | |
383 | ||
384 | subs->data_endpoint->sync_master = subs->sync_endpoint; | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
389 | static int set_sync_endpoint(struct snd_usb_substream *subs, | |
390 | struct audioformat *fmt, | |
391 | struct usb_device *dev, | |
392 | struct usb_host_interface *alts, | |
393 | struct usb_interface_descriptor *altsd) | |
394 | { | |
395 | int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; | |
396 | unsigned int ep, attr; | |
95fec883 | 397 | bool implicit_fb; |
a60945fd EZ |
398 | int err; |
399 | ||
400 | /* we need a sync pipe in async OUT or adaptive IN mode */ | |
401 | /* check the number of EP, since some devices have broken | |
402 | * descriptors which fool us. if it has only one EP, | |
403 | * assume it as adaptive-out or sync-in. | |
404 | */ | |
405 | attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
406 | ||
63018447 PLB |
407 | if ((is_playback && (attr != USB_ENDPOINT_SYNC_ASYNC)) || |
408 | (!is_playback && (attr != USB_ENDPOINT_SYNC_ADAPTIVE))) { | |
409 | ||
410 | /* | |
411 | * In these modes the notion of sync_endpoint is irrelevant. | |
412 | * Reset pointers to avoid using stale data from previously | |
413 | * used settings, e.g. when configuration and endpoints were | |
414 | * changed | |
415 | */ | |
416 | ||
417 | subs->sync_endpoint = NULL; | |
418 | subs->data_endpoint->sync_master = NULL; | |
419 | } | |
420 | ||
a60945fd EZ |
421 | err = set_sync_ep_implicit_fb_quirk(subs, dev, altsd, attr); |
422 | if (err < 0) | |
423 | return err; | |
424 | ||
f34d0650 EZ |
425 | if (altsd->bNumEndpoints < 2) |
426 | return 0; | |
c75a8a7a | 427 | |
395ae54b PLB |
428 | if ((is_playback && (attr == USB_ENDPOINT_SYNC_SYNC || |
429 | attr == USB_ENDPOINT_SYNC_ADAPTIVE)) || | |
f34d0650 EZ |
430 | (!is_playback && attr != USB_ENDPOINT_SYNC_ADAPTIVE)) |
431 | return 0; | |
edcd3633 | 432 | |
395ae54b PLB |
433 | /* |
434 | * In case of illegal SYNC_NONE for OUT endpoint, we keep going to see | |
435 | * if we don't find a sync endpoint, as on M-Audio Transit. In case of | |
436 | * error fall back to SYNC mode and don't create sync endpoint | |
437 | */ | |
438 | ||
f34d0650 EZ |
439 | /* check sync-pipe endpoint */ |
440 | /* ... and check descriptor size before accessing bSynchAddress | |
441 | because there is a version of the SB Audigy 2 NX firmware lacking | |
442 | the audio fields in the endpoint descriptors */ | |
443 | if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC || | |
444 | (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && | |
95fec883 | 445 | get_endpoint(alts, 1)->bSynchAddress != 0)) { |
0ba41d91 TI |
446 | dev_err(&dev->dev, |
447 | "%d:%d : invalid sync pipe. bmAttributes %02x, bLength %d, bSynchAddress %02x\n", | |
448 | fmt->iface, fmt->altsetting, | |
f34d0650 EZ |
449 | get_endpoint(alts, 1)->bmAttributes, |
450 | get_endpoint(alts, 1)->bLength, | |
451 | get_endpoint(alts, 1)->bSynchAddress); | |
395ae54b PLB |
452 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
453 | return 0; | |
f34d0650 EZ |
454 | return -EINVAL; |
455 | } | |
456 | ep = get_endpoint(alts, 1)->bEndpointAddress; | |
95fec883 | 457 | if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
f34d0650 EZ |
458 | ((is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || |
459 | (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { | |
0ba41d91 TI |
460 | dev_err(&dev->dev, |
461 | "%d:%d : invalid sync pipe. is_playback %d, ep %02x, bSynchAddress %02x\n", | |
462 | fmt->iface, fmt->altsetting, | |
f34d0650 | 463 | is_playback, ep, get_endpoint(alts, 0)->bSynchAddress); |
395ae54b PLB |
464 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
465 | return 0; | |
f34d0650 | 466 | return -EINVAL; |
edcd3633 | 467 | } |
e5779998 | 468 | |
f34d0650 EZ |
469 | implicit_fb = (get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_USAGE_MASK) |
470 | == USB_ENDPOINT_USAGE_IMPLICIT_FB; | |
471 | ||
472 | subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, | |
473 | alts, ep, !subs->direction, | |
474 | implicit_fb ? | |
475 | SND_USB_ENDPOINT_TYPE_DATA : | |
476 | SND_USB_ENDPOINT_TYPE_SYNC); | |
395ae54b PLB |
477 | if (!subs->sync_endpoint) { |
478 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) | |
479 | return 0; | |
f34d0650 | 480 | return -EINVAL; |
395ae54b | 481 | } |
f34d0650 EZ |
482 | |
483 | subs->data_endpoint->sync_master = subs->sync_endpoint; | |
484 | ||
71bb64c5 EZ |
485 | return 0; |
486 | } | |
487 | ||
488 | /* | |
489 | * find a matching format and set up the interface | |
490 | */ | |
491 | static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) | |
492 | { | |
493 | struct usb_device *dev = subs->dev; | |
494 | struct usb_host_interface *alts; | |
495 | struct usb_interface_descriptor *altsd; | |
496 | struct usb_interface *iface; | |
497 | int err; | |
498 | ||
499 | iface = usb_ifnum_to_if(dev, fmt->iface); | |
500 | if (WARN_ON(!iface)) | |
501 | return -EINVAL; | |
b099b969 | 502 | alts = usb_altnum_to_altsetting(iface, fmt->altsetting); |
71bb64c5 EZ |
503 | altsd = get_iface_desc(alts); |
504 | if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting)) | |
505 | return -EINVAL; | |
506 | ||
507 | if (fmt == subs->cur_audiofmt) | |
508 | return 0; | |
509 | ||
510 | /* close the old interface */ | |
511 | if (subs->interface >= 0 && subs->interface != fmt->iface) { | |
8a463225 TI |
512 | if (!subs->stream->chip->keep_iface) { |
513 | err = usb_set_interface(subs->dev, subs->interface, 0); | |
514 | if (err < 0) { | |
515 | dev_err(&dev->dev, | |
516 | "%d:%d: return to setting 0 failed (%d)\n", | |
517 | fmt->iface, fmt->altsetting, err); | |
518 | return -EIO; | |
519 | } | |
71bb64c5 EZ |
520 | } |
521 | subs->interface = -1; | |
522 | subs->altset_idx = 0; | |
523 | } | |
524 | ||
525 | /* set interface */ | |
b099b969 | 526 | if (iface->cur_altsetting != alts) { |
6874daad JK |
527 | err = snd_usb_select_mode_quirk(subs, fmt); |
528 | if (err < 0) | |
529 | return -EIO; | |
530 | ||
71bb64c5 EZ |
531 | err = usb_set_interface(dev, fmt->iface, fmt->altsetting); |
532 | if (err < 0) { | |
0ba41d91 TI |
533 | dev_err(&dev->dev, |
534 | "%d:%d: usb_set_interface failed (%d)\n", | |
535 | fmt->iface, fmt->altsetting, err); | |
71bb64c5 EZ |
536 | return -EIO; |
537 | } | |
0ba41d91 TI |
538 | dev_dbg(&dev->dev, "setting usb interface %d:%d\n", |
539 | fmt->iface, fmt->altsetting); | |
71bb64c5 EZ |
540 | snd_usb_set_interface_quirk(dev); |
541 | } | |
542 | ||
b099b969 TI |
543 | subs->interface = fmt->iface; |
544 | subs->altset_idx = fmt->altset_idx; | |
71bb64c5 EZ |
545 | subs->data_endpoint = snd_usb_add_endpoint(subs->stream->chip, |
546 | alts, fmt->endpoint, subs->direction, | |
547 | SND_USB_ENDPOINT_TYPE_DATA); | |
548 | ||
549 | if (!subs->data_endpoint) | |
550 | return -EINVAL; | |
551 | ||
552 | err = set_sync_endpoint(subs, fmt, dev, alts, altsd); | |
553 | if (err < 0) | |
554 | return err; | |
555 | ||
d133f2c2 EZ |
556 | err = snd_usb_init_pitch(subs->stream->chip, fmt->iface, alts, fmt); |
557 | if (err < 0) | |
e5779998 DM |
558 | return err; |
559 | ||
560 | subs->cur_audiofmt = fmt; | |
561 | ||
562 | snd_usb_set_format_quirk(subs, fmt); | |
563 | ||
e5779998 DM |
564 | return 0; |
565 | } | |
566 | ||
0d9741c0 EZ |
567 | /* |
568 | * Return the score of matching two audioformats. | |
569 | * Veto the audioformat if: | |
570 | * - It has no channels for some reason. | |
571 | * - Requested PCM format is not supported. | |
572 | * - Requested sample rate is not supported. | |
573 | */ | |
0ba41d91 TI |
574 | static int match_endpoint_audioformats(struct snd_usb_substream *subs, |
575 | struct audioformat *fp, | |
576 | struct audioformat *match, int rate, | |
577 | snd_pcm_format_t pcm_format) | |
0d9741c0 EZ |
578 | { |
579 | int i; | |
580 | int score = 0; | |
581 | ||
582 | if (fp->channels < 1) { | |
0ba41d91 TI |
583 | dev_dbg(&subs->dev->dev, |
584 | "%s: (fmt @%p) no channels\n", __func__, fp); | |
0d9741c0 EZ |
585 | return 0; |
586 | } | |
587 | ||
74c34ca1 | 588 | if (!(fp->formats & pcm_format_to_bits(pcm_format))) { |
0ba41d91 TI |
589 | dev_dbg(&subs->dev->dev, |
590 | "%s: (fmt @%p) no match for format %d\n", __func__, | |
0d9741c0 EZ |
591 | fp, pcm_format); |
592 | return 0; | |
593 | } | |
594 | ||
595 | for (i = 0; i < fp->nr_rates; i++) { | |
596 | if (fp->rate_table[i] == rate) { | |
597 | score++; | |
598 | break; | |
599 | } | |
600 | } | |
601 | if (!score) { | |
0ba41d91 TI |
602 | dev_dbg(&subs->dev->dev, |
603 | "%s: (fmt @%p) no match for rate %d\n", __func__, | |
0d9741c0 EZ |
604 | fp, rate); |
605 | return 0; | |
606 | } | |
607 | ||
608 | if (fp->channels == match->channels) | |
609 | score++; | |
610 | ||
0ba41d91 TI |
611 | dev_dbg(&subs->dev->dev, |
612 | "%s: (fmt @%p) score %d\n", __func__, fp, score); | |
0d9741c0 EZ |
613 | |
614 | return score; | |
615 | } | |
616 | ||
617 | /* | |
618 | * Configure the sync ep using the rate and pcm format of the data ep. | |
619 | */ | |
620 | static int configure_sync_endpoint(struct snd_usb_substream *subs) | |
621 | { | |
622 | int ret; | |
623 | struct audioformat *fp; | |
624 | struct audioformat *sync_fp = NULL; | |
625 | int cur_score = 0; | |
626 | int sync_period_bytes = subs->period_bytes; | |
627 | struct snd_usb_substream *sync_subs = | |
628 | &subs->stream->substream[subs->direction ^ 1]; | |
629 | ||
31be5425 TI |
630 | if (subs->sync_endpoint->type != SND_USB_ENDPOINT_TYPE_DATA || |
631 | !subs->stream) | |
632 | return snd_usb_endpoint_set_params(subs->sync_endpoint, | |
633 | subs->pcm_format, | |
634 | subs->channels, | |
635 | subs->period_bytes, | |
976b6c06 | 636 | 0, 0, |
31be5425 TI |
637 | subs->cur_rate, |
638 | subs->cur_audiofmt, | |
639 | NULL); | |
640 | ||
0d9741c0 EZ |
641 | /* Try to find the best matching audioformat. */ |
642 | list_for_each_entry(fp, &sync_subs->fmt_list, list) { | |
0ba41d91 TI |
643 | int score = match_endpoint_audioformats(subs, |
644 | fp, subs->cur_audiofmt, | |
0d9741c0 EZ |
645 | subs->cur_rate, subs->pcm_format); |
646 | ||
647 | if (score > cur_score) { | |
648 | sync_fp = fp; | |
649 | cur_score = score; | |
650 | } | |
651 | } | |
652 | ||
653 | if (unlikely(sync_fp == NULL)) { | |
0ba41d91 TI |
654 | dev_err(&subs->dev->dev, |
655 | "%s: no valid audioformat for sync ep %x found\n", | |
0d9741c0 EZ |
656 | __func__, sync_subs->ep_num); |
657 | return -EINVAL; | |
658 | } | |
659 | ||
660 | /* | |
661 | * Recalculate the period bytes if channel number differ between | |
662 | * data and sync ep audioformat. | |
663 | */ | |
664 | if (sync_fp->channels != subs->channels) { | |
665 | sync_period_bytes = (subs->period_bytes / subs->channels) * | |
666 | sync_fp->channels; | |
0ba41d91 TI |
667 | dev_dbg(&subs->dev->dev, |
668 | "%s: adjusted sync ep period bytes (%d -> %d)\n", | |
0d9741c0 EZ |
669 | __func__, subs->period_bytes, sync_period_bytes); |
670 | } | |
671 | ||
672 | ret = snd_usb_endpoint_set_params(subs->sync_endpoint, | |
673 | subs->pcm_format, | |
674 | sync_fp->channels, | |
675 | sync_period_bytes, | |
976b6c06 | 676 | 0, 0, |
0d9741c0 EZ |
677 | subs->cur_rate, |
678 | sync_fp, | |
679 | NULL); | |
680 | ||
681 | return ret; | |
682 | } | |
683 | ||
61a70950 DR |
684 | /* |
685 | * configure endpoint params | |
686 | * | |
687 | * called during initial setup and upon resume | |
688 | */ | |
689 | static int configure_endpoint(struct snd_usb_substream *subs) | |
690 | { | |
691 | int ret; | |
692 | ||
61a70950 | 693 | /* format changed */ |
b0db6063 | 694 | stop_endpoints(subs, true); |
61a70950 DR |
695 | ret = snd_usb_endpoint_set_params(subs->data_endpoint, |
696 | subs->pcm_format, | |
697 | subs->channels, | |
698 | subs->period_bytes, | |
976b6c06 AS |
699 | subs->period_frames, |
700 | subs->buffer_periods, | |
61a70950 DR |
701 | subs->cur_rate, |
702 | subs->cur_audiofmt, | |
703 | subs->sync_endpoint); | |
704 | if (ret < 0) | |
978520b7 | 705 | return ret; |
61a70950 DR |
706 | |
707 | if (subs->sync_endpoint) | |
0d9741c0 EZ |
708 | ret = configure_sync_endpoint(subs); |
709 | ||
61a70950 DR |
710 | return ret; |
711 | } | |
712 | ||
e5779998 DM |
713 | /* |
714 | * hw_params callback | |
715 | * | |
716 | * allocate a buffer and set the given audio format. | |
717 | * | |
718 | * so far we use a physically linear buffer although packetize transfer | |
719 | * doesn't need a continuous area. | |
720 | * if sg buffer is supported on the later version of alsa, we'll follow | |
721 | * that. | |
722 | */ | |
723 | static int snd_usb_hw_params(struct snd_pcm_substream *substream, | |
724 | struct snd_pcm_hw_params *hw_params) | |
725 | { | |
726 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
727 | struct audioformat *fmt; | |
61a70950 | 728 | int ret; |
e5779998 DM |
729 | |
730 | ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, | |
731 | params_buffer_bytes(hw_params)); | |
732 | if (ret < 0) | |
c89178f5 | 733 | return ret; |
e5779998 | 734 | |
61a70950 DR |
735 | subs->pcm_format = params_format(hw_params); |
736 | subs->period_bytes = params_period_bytes(hw_params); | |
976b6c06 AS |
737 | subs->period_frames = params_period_size(hw_params); |
738 | subs->buffer_periods = params_periods(hw_params); | |
61a70950 DR |
739 | subs->channels = params_channels(hw_params); |
740 | subs->cur_rate = params_rate(hw_params); | |
741 | ||
742 | fmt = find_format(subs); | |
e5779998 | 743 | if (!fmt) { |
0ba41d91 TI |
744 | dev_dbg(&subs->dev->dev, |
745 | "cannot set format: format = %#x, rate = %d, channels = %d\n", | |
61a70950 | 746 | subs->pcm_format, subs->cur_rate, subs->channels); |
c89178f5 | 747 | return -EINVAL; |
e5779998 DM |
748 | } |
749 | ||
47ab1545 TI |
750 | ret = snd_usb_lock_shutdown(subs->stream->chip); |
751 | if (ret < 0) | |
c89178f5 | 752 | return ret; |
47ab1545 TI |
753 | ret = set_format(subs, fmt); |
754 | snd_usb_unlock_shutdown(subs->stream->chip); | |
978520b7 | 755 | if (ret < 0) |
c89178f5 | 756 | return ret; |
e5779998 | 757 | |
61a70950 DR |
758 | subs->interface = fmt->iface; |
759 | subs->altset_idx = fmt->altset_idx; | |
384dc085 | 760 | subs->need_setup_ep = true; |
715a1705 | 761 | |
61a70950 | 762 | return 0; |
e5779998 DM |
763 | } |
764 | ||
765 | /* | |
766 | * hw_free callback | |
767 | * | |
768 | * reset the audio format and release the buffer | |
769 | */ | |
770 | static int snd_usb_hw_free(struct snd_pcm_substream *substream) | |
771 | { | |
772 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
773 | ||
774 | subs->cur_audiofmt = NULL; | |
775 | subs->cur_rate = 0; | |
776 | subs->period_bytes = 0; | |
47ab1545 | 777 | if (!snd_usb_lock_shutdown(subs->stream->chip)) { |
a9bb3626 | 778 | stop_endpoints(subs, true); |
26de5d0a EZ |
779 | snd_usb_endpoint_deactivate(subs->sync_endpoint); |
780 | snd_usb_endpoint_deactivate(subs->data_endpoint); | |
47ab1545 | 781 | snd_usb_unlock_shutdown(subs->stream->chip); |
978520b7 | 782 | } |
e5779998 DM |
783 | return snd_pcm_lib_free_vmalloc_buffer(substream); |
784 | } | |
785 | ||
786 | /* | |
787 | * prepare callback | |
788 | * | |
789 | * only a few subtle things... | |
790 | */ | |
791 | static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) | |
792 | { | |
793 | struct snd_pcm_runtime *runtime = substream->runtime; | |
794 | struct snd_usb_substream *subs = runtime->private_data; | |
61a70950 DR |
795 | struct usb_host_interface *alts; |
796 | struct usb_interface *iface; | |
797 | int ret; | |
e5779998 DM |
798 | |
799 | if (! subs->cur_audiofmt) { | |
0ba41d91 | 800 | dev_err(&subs->dev->dev, "no format is specified!\n"); |
e5779998 DM |
801 | return -ENXIO; |
802 | } | |
803 | ||
47ab1545 TI |
804 | ret = snd_usb_lock_shutdown(subs->stream->chip); |
805 | if (ret < 0) | |
806 | return ret; | |
978520b7 TI |
807 | if (snd_BUG_ON(!subs->data_endpoint)) { |
808 | ret = -EIO; | |
809 | goto unlock; | |
810 | } | |
edcd3633 | 811 | |
f58161ba TI |
812 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); |
813 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
814 | ||
61a70950 DR |
815 | ret = set_format(subs, subs->cur_audiofmt); |
816 | if (ret < 0) | |
978520b7 | 817 | goto unlock; |
61a70950 | 818 | |
384dc085 | 819 | if (subs->need_setup_ep) { |
1e2e3fe4 DG |
820 | |
821 | iface = usb_ifnum_to_if(subs->dev, subs->cur_audiofmt->iface); | |
822 | alts = &iface->altsetting[subs->cur_audiofmt->altset_idx]; | |
823 | ret = snd_usb_init_sample_rate(subs->stream->chip, | |
824 | subs->cur_audiofmt->iface, | |
825 | alts, | |
826 | subs->cur_audiofmt, | |
827 | subs->cur_rate); | |
828 | if (ret < 0) | |
829 | goto unlock; | |
830 | ||
384dc085 TI |
831 | ret = configure_endpoint(subs); |
832 | if (ret < 0) | |
978520b7 | 833 | goto unlock; |
384dc085 TI |
834 | subs->need_setup_ep = false; |
835 | } | |
61a70950 | 836 | |
e5779998 | 837 | /* some unit conversions in runtime */ |
edcd3633 DM |
838 | subs->data_endpoint->maxframesize = |
839 | bytes_to_frames(runtime, subs->data_endpoint->maxpacksize); | |
840 | subs->data_endpoint->curframesize = | |
841 | bytes_to_frames(runtime, subs->data_endpoint->curpacksize); | |
e5779998 DM |
842 | |
843 | /* reset the pointer */ | |
844 | subs->hwptr_done = 0; | |
845 | subs->transfer_done = 0; | |
294c4fb8 PLB |
846 | subs->last_delay = 0; |
847 | subs->last_frame_number = 0; | |
e5779998 DM |
848 | runtime->delay = 0; |
849 | ||
edcd3633 DM |
850 | /* for playback, submit the URBs now; otherwise, the first hwptr_done |
851 | * updates for all URBs would happen at the same time when starting */ | |
852 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) | |
1d0f9530 | 853 | ret = start_endpoints(subs); |
edcd3633 | 854 | |
978520b7 | 855 | unlock: |
47ab1545 | 856 | snd_usb_unlock_shutdown(subs->stream->chip); |
978520b7 | 857 | return ret; |
e5779998 DM |
858 | } |
859 | ||
aaffbf78 | 860 | static const struct snd_pcm_hardware snd_usb_hardware = |
e5779998 DM |
861 | { |
862 | .info = SNDRV_PCM_INFO_MMAP | | |
863 | SNDRV_PCM_INFO_MMAP_VALID | | |
864 | SNDRV_PCM_INFO_BATCH | | |
865 | SNDRV_PCM_INFO_INTERLEAVED | | |
866 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
867 | SNDRV_PCM_INFO_PAUSE, | |
868 | .buffer_bytes_max = 1024 * 1024, | |
869 | .period_bytes_min = 64, | |
870 | .period_bytes_max = 512 * 1024, | |
871 | .periods_min = 2, | |
872 | .periods_max = 1024, | |
873 | }; | |
874 | ||
875 | static int hw_check_valid_format(struct snd_usb_substream *subs, | |
876 | struct snd_pcm_hw_params *params, | |
877 | struct audioformat *fp) | |
878 | { | |
879 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
880 | struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
881 | struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
882 | struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
015eb0b0 | 883 | struct snd_mask check_fmts; |
e5779998 DM |
884 | unsigned int ptime; |
885 | ||
886 | /* check the format */ | |
015eb0b0 CL |
887 | snd_mask_none(&check_fmts); |
888 | check_fmts.bits[0] = (u32)fp->formats; | |
889 | check_fmts.bits[1] = (u32)(fp->formats >> 32); | |
890 | snd_mask_intersect(&check_fmts, fmts); | |
891 | if (snd_mask_empty(&check_fmts)) { | |
e5779998 DM |
892 | hwc_debug(" > check: no supported format %d\n", fp->format); |
893 | return 0; | |
894 | } | |
895 | /* check the channels */ | |
896 | if (fp->channels < ct->min || fp->channels > ct->max) { | |
897 | hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); | |
898 | return 0; | |
899 | } | |
900 | /* check the rate is within the range */ | |
901 | if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { | |
902 | hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); | |
903 | return 0; | |
904 | } | |
905 | if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { | |
906 | hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); | |
907 | return 0; | |
908 | } | |
909 | /* check whether the period time is >= the data packet interval */ | |
978520b7 | 910 | if (subs->speed != USB_SPEED_FULL) { |
e5779998 DM |
911 | ptime = 125 * (1 << fp->datainterval); |
912 | if (ptime > pt->max || (ptime == pt->max && pt->openmax)) { | |
913 | hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max); | |
914 | return 0; | |
915 | } | |
916 | } | |
917 | return 1; | |
918 | } | |
919 | ||
920 | static int hw_rule_rate(struct snd_pcm_hw_params *params, | |
921 | struct snd_pcm_hw_rule *rule) | |
922 | { | |
923 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 924 | struct audioformat *fp; |
e5779998 DM |
925 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
926 | unsigned int rmin, rmax; | |
927 | int changed; | |
928 | ||
929 | hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); | |
930 | changed = 0; | |
931 | rmin = rmax = 0; | |
88766f04 | 932 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
933 | if (!hw_check_valid_format(subs, params, fp)) |
934 | continue; | |
935 | if (changed++) { | |
936 | if (rmin > fp->rate_min) | |
937 | rmin = fp->rate_min; | |
938 | if (rmax < fp->rate_max) | |
939 | rmax = fp->rate_max; | |
940 | } else { | |
941 | rmin = fp->rate_min; | |
942 | rmax = fp->rate_max; | |
943 | } | |
944 | } | |
945 | ||
946 | if (!changed) { | |
947 | hwc_debug(" --> get empty\n"); | |
948 | it->empty = 1; | |
949 | return -EINVAL; | |
950 | } | |
951 | ||
952 | changed = 0; | |
953 | if (it->min < rmin) { | |
954 | it->min = rmin; | |
955 | it->openmin = 0; | |
956 | changed = 1; | |
957 | } | |
958 | if (it->max > rmax) { | |
959 | it->max = rmax; | |
960 | it->openmax = 0; | |
961 | changed = 1; | |
962 | } | |
963 | if (snd_interval_checkempty(it)) { | |
964 | it->empty = 1; | |
965 | return -EINVAL; | |
966 | } | |
967 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
968 | return changed; | |
969 | } | |
970 | ||
971 | ||
972 | static int hw_rule_channels(struct snd_pcm_hw_params *params, | |
973 | struct snd_pcm_hw_rule *rule) | |
974 | { | |
975 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 976 | struct audioformat *fp; |
e5779998 DM |
977 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
978 | unsigned int rmin, rmax; | |
979 | int changed; | |
980 | ||
981 | hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); | |
982 | changed = 0; | |
983 | rmin = rmax = 0; | |
88766f04 | 984 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
985 | if (!hw_check_valid_format(subs, params, fp)) |
986 | continue; | |
987 | if (changed++) { | |
988 | if (rmin > fp->channels) | |
989 | rmin = fp->channels; | |
990 | if (rmax < fp->channels) | |
991 | rmax = fp->channels; | |
992 | } else { | |
993 | rmin = fp->channels; | |
994 | rmax = fp->channels; | |
995 | } | |
996 | } | |
997 | ||
998 | if (!changed) { | |
999 | hwc_debug(" --> get empty\n"); | |
1000 | it->empty = 1; | |
1001 | return -EINVAL; | |
1002 | } | |
1003 | ||
1004 | changed = 0; | |
1005 | if (it->min < rmin) { | |
1006 | it->min = rmin; | |
1007 | it->openmin = 0; | |
1008 | changed = 1; | |
1009 | } | |
1010 | if (it->max > rmax) { | |
1011 | it->max = rmax; | |
1012 | it->openmax = 0; | |
1013 | changed = 1; | |
1014 | } | |
1015 | if (snd_interval_checkempty(it)) { | |
1016 | it->empty = 1; | |
1017 | return -EINVAL; | |
1018 | } | |
1019 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
1020 | return changed; | |
1021 | } | |
1022 | ||
1023 | static int hw_rule_format(struct snd_pcm_hw_params *params, | |
1024 | struct snd_pcm_hw_rule *rule) | |
1025 | { | |
1026 | struct snd_usb_substream *subs = rule->private; | |
88766f04 | 1027 | struct audioformat *fp; |
e5779998 DM |
1028 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
1029 | u64 fbits; | |
1030 | u32 oldbits[2]; | |
1031 | int changed; | |
1032 | ||
1033 | hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); | |
1034 | fbits = 0; | |
88766f04 | 1035 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1036 | if (!hw_check_valid_format(subs, params, fp)) |
1037 | continue; | |
015eb0b0 | 1038 | fbits |= fp->formats; |
e5779998 DM |
1039 | } |
1040 | ||
1041 | oldbits[0] = fmt->bits[0]; | |
1042 | oldbits[1] = fmt->bits[1]; | |
1043 | fmt->bits[0] &= (u32)fbits; | |
1044 | fmt->bits[1] &= (u32)(fbits >> 32); | |
1045 | if (!fmt->bits[0] && !fmt->bits[1]) { | |
1046 | hwc_debug(" --> get empty\n"); | |
1047 | return -EINVAL; | |
1048 | } | |
1049 | changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); | |
1050 | hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); | |
1051 | return changed; | |
1052 | } | |
1053 | ||
1054 | static int hw_rule_period_time(struct snd_pcm_hw_params *params, | |
1055 | struct snd_pcm_hw_rule *rule) | |
1056 | { | |
1057 | struct snd_usb_substream *subs = rule->private; | |
1058 | struct audioformat *fp; | |
1059 | struct snd_interval *it; | |
1060 | unsigned char min_datainterval; | |
1061 | unsigned int pmin; | |
1062 | int changed; | |
1063 | ||
1064 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
1065 | hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); | |
1066 | min_datainterval = 0xff; | |
1067 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
1068 | if (!hw_check_valid_format(subs, params, fp)) | |
1069 | continue; | |
1070 | min_datainterval = min(min_datainterval, fp->datainterval); | |
1071 | } | |
1072 | if (min_datainterval == 0xff) { | |
a7ce2e0d | 1073 | hwc_debug(" --> get empty\n"); |
e5779998 DM |
1074 | it->empty = 1; |
1075 | return -EINVAL; | |
1076 | } | |
1077 | pmin = 125 * (1 << min_datainterval); | |
1078 | changed = 0; | |
1079 | if (it->min < pmin) { | |
1080 | it->min = pmin; | |
1081 | it->openmin = 0; | |
1082 | changed = 1; | |
1083 | } | |
1084 | if (snd_interval_checkempty(it)) { | |
1085 | it->empty = 1; | |
1086 | return -EINVAL; | |
1087 | } | |
1088 | hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed); | |
1089 | return changed; | |
1090 | } | |
1091 | ||
1092 | /* | |
1093 | * If the device supports unusual bit rates, does the request meet these? | |
1094 | */ | |
1095 | static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, | |
1096 | struct snd_usb_substream *subs) | |
1097 | { | |
1098 | struct audioformat *fp; | |
0717d0f5 | 1099 | int *rate_list; |
e5779998 DM |
1100 | int count = 0, needs_knot = 0; |
1101 | int err; | |
1102 | ||
5cd5d7c4 CL |
1103 | kfree(subs->rate_list.list); |
1104 | subs->rate_list.list = NULL; | |
1105 | ||
e5779998 DM |
1106 | list_for_each_entry(fp, &subs->fmt_list, list) { |
1107 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) | |
1108 | return 0; | |
1109 | count += fp->nr_rates; | |
1110 | if (fp->rates & SNDRV_PCM_RATE_KNOT) | |
1111 | needs_knot = 1; | |
1112 | } | |
1113 | if (!needs_knot) | |
1114 | return 0; | |
1115 | ||
0717d0f5 TI |
1116 | subs->rate_list.list = rate_list = |
1117 | kmalloc(sizeof(int) * count, GFP_KERNEL); | |
8a8d56b2 JJ |
1118 | if (!subs->rate_list.list) |
1119 | return -ENOMEM; | |
1120 | subs->rate_list.count = count; | |
e5779998 DM |
1121 | subs->rate_list.mask = 0; |
1122 | count = 0; | |
1123 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
1124 | int i; | |
1125 | for (i = 0; i < fp->nr_rates; i++) | |
0717d0f5 | 1126 | rate_list[count++] = fp->rate_table[i]; |
e5779998 DM |
1127 | } |
1128 | err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1129 | &subs->rate_list); | |
1130 | if (err < 0) | |
1131 | return err; | |
1132 | ||
1133 | return 0; | |
1134 | } | |
1135 | ||
1136 | ||
1137 | /* | |
1138 | * set up the runtime hardware information. | |
1139 | */ | |
1140 | ||
1141 | static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) | |
1142 | { | |
88766f04 | 1143 | struct audioformat *fp; |
e5779998 DM |
1144 | unsigned int pt, ptmin; |
1145 | int param_period_time_if_needed; | |
1146 | int err; | |
1147 | ||
1148 | runtime->hw.formats = subs->formats; | |
1149 | ||
1150 | runtime->hw.rate_min = 0x7fffffff; | |
1151 | runtime->hw.rate_max = 0; | |
1152 | runtime->hw.channels_min = 256; | |
1153 | runtime->hw.channels_max = 0; | |
1154 | runtime->hw.rates = 0; | |
1155 | ptmin = UINT_MAX; | |
1156 | /* check min/max rates and channels */ | |
88766f04 | 1157 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
1158 | runtime->hw.rates |= fp->rates; |
1159 | if (runtime->hw.rate_min > fp->rate_min) | |
1160 | runtime->hw.rate_min = fp->rate_min; | |
1161 | if (runtime->hw.rate_max < fp->rate_max) | |
1162 | runtime->hw.rate_max = fp->rate_max; | |
1163 | if (runtime->hw.channels_min > fp->channels) | |
1164 | runtime->hw.channels_min = fp->channels; | |
1165 | if (runtime->hw.channels_max < fp->channels) | |
1166 | runtime->hw.channels_max = fp->channels; | |
1167 | if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) { | |
1168 | /* FIXME: there might be more than one audio formats... */ | |
1169 | runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = | |
1170 | fp->frame_size; | |
1171 | } | |
1172 | pt = 125 * (1 << fp->datainterval); | |
1173 | ptmin = min(ptmin, pt); | |
1174 | } | |
88a8516a ON |
1175 | err = snd_usb_autoresume(subs->stream->chip); |
1176 | if (err < 0) | |
1177 | return err; | |
e5779998 DM |
1178 | |
1179 | param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME; | |
978520b7 | 1180 | if (subs->speed == USB_SPEED_FULL) |
e5779998 DM |
1181 | /* full speed devices have fixed data packet interval */ |
1182 | ptmin = 1000; | |
1183 | if (ptmin == 1000) | |
1184 | /* if period time doesn't go below 1 ms, no rules needed */ | |
1185 | param_period_time_if_needed = -1; | |
1186 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1187 | ptmin, UINT_MAX); | |
1188 | ||
1189 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1190 | hw_rule_rate, subs, | |
1191 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1192 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1193 | param_period_time_if_needed, | |
1194 | -1)) < 0) | |
88a8516a | 1195 | goto rep_err; |
e5779998 DM |
1196 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, |
1197 | hw_rule_channels, subs, | |
1198 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1199 | SNDRV_PCM_HW_PARAM_RATE, | |
1200 | param_period_time_if_needed, | |
1201 | -1)) < 0) | |
88a8516a | 1202 | goto rep_err; |
e5779998 DM |
1203 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, |
1204 | hw_rule_format, subs, | |
1205 | SNDRV_PCM_HW_PARAM_RATE, | |
1206 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1207 | param_period_time_if_needed, | |
1208 | -1)) < 0) | |
88a8516a | 1209 | goto rep_err; |
e5779998 DM |
1210 | if (param_period_time_if_needed >= 0) { |
1211 | err = snd_pcm_hw_rule_add(runtime, 0, | |
1212 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1213 | hw_rule_period_time, subs, | |
1214 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1215 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1216 | SNDRV_PCM_HW_PARAM_RATE, | |
1217 | -1); | |
1218 | if (err < 0) | |
88a8516a | 1219 | goto rep_err; |
e5779998 DM |
1220 | } |
1221 | if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0) | |
88a8516a | 1222 | goto rep_err; |
e5779998 | 1223 | return 0; |
88a8516a ON |
1224 | |
1225 | rep_err: | |
1226 | snd_usb_autosuspend(subs->stream->chip); | |
1227 | return err; | |
e5779998 DM |
1228 | } |
1229 | ||
1230 | static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction) | |
1231 | { | |
1232 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); | |
1233 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1234 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1235 | ||
1236 | subs->interface = -1; | |
e11b4e0e | 1237 | subs->altset_idx = 0; |
e5779998 DM |
1238 | runtime->hw = snd_usb_hardware; |
1239 | runtime->private_data = subs; | |
1240 | subs->pcm_substream = substream; | |
88a8516a | 1241 | /* runtime PM is also done there */ |
d24f5061 DM |
1242 | |
1243 | /* initialize DSD/DOP context */ | |
1244 | subs->dsd_dop.byte_idx = 0; | |
1245 | subs->dsd_dop.channel = 0; | |
1246 | subs->dsd_dop.marker = 1; | |
1247 | ||
c89178f5 | 1248 | return setup_hw_info(runtime, subs); |
e5779998 DM |
1249 | } |
1250 | ||
1251 | static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction) | |
1252 | { | |
1253 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); | |
1254 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1255 | ||
b0db6063 | 1256 | stop_endpoints(subs, true); |
68e67f40 | 1257 | |
8a463225 TI |
1258 | if (!as->chip->keep_iface && |
1259 | subs->interface >= 0 && | |
47ab1545 | 1260 | !snd_usb_lock_shutdown(subs->stream->chip)) { |
68e67f40 DM |
1261 | usb_set_interface(subs->dev, subs->interface, 0); |
1262 | subs->interface = -1; | |
47ab1545 | 1263 | snd_usb_unlock_shutdown(subs->stream->chip); |
68e67f40 DM |
1264 | } |
1265 | ||
e5779998 | 1266 | subs->pcm_substream = NULL; |
88a8516a | 1267 | snd_usb_autosuspend(subs->stream->chip); |
edcd3633 | 1268 | |
68e67f40 | 1269 | return 0; |
edcd3633 DM |
1270 | } |
1271 | ||
1272 | /* Since a URB can handle only a single linear buffer, we must use double | |
1273 | * buffering when the data to be transferred overflows the buffer boundary. | |
1274 | * To avoid inconsistencies when updating hwptr_done, we use double buffering | |
1275 | * for all URBs. | |
1276 | */ | |
1277 | static void retire_capture_urb(struct snd_usb_substream *subs, | |
1278 | struct urb *urb) | |
1279 | { | |
1280 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1281 | unsigned int stride, frames, bytes, oldptr; | |
1282 | int i, period_elapsed = 0; | |
1283 | unsigned long flags; | |
1284 | unsigned char *cp; | |
e4cc6153 PLB |
1285 | int current_frame_number; |
1286 | ||
1287 | /* read frame number here, update pointer in critical section */ | |
1288 | current_frame_number = usb_get_current_frame_number(subs->dev); | |
edcd3633 DM |
1289 | |
1290 | stride = runtime->frame_bits >> 3; | |
1291 | ||
1292 | for (i = 0; i < urb->number_of_packets; i++) { | |
1539d4f8 | 1293 | cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset + subs->pkt_offset_adj; |
edcd3633 | 1294 | if (urb->iso_frame_desc[i].status && printk_ratelimit()) { |
0ba41d91 TI |
1295 | dev_dbg(&subs->dev->dev, "frame %d active: %d\n", |
1296 | i, urb->iso_frame_desc[i].status); | |
edcd3633 DM |
1297 | // continue; |
1298 | } | |
1299 | bytes = urb->iso_frame_desc[i].actual_length; | |
1300 | frames = bytes / stride; | |
1301 | if (!subs->txfr_quirk) | |
1302 | bytes = frames * stride; | |
1303 | if (bytes % (runtime->sample_bits >> 3) != 0) { | |
edcd3633 | 1304 | int oldbytes = bytes; |
edcd3633 | 1305 | bytes = frames * stride; |
0ba41d91 TI |
1306 | dev_warn(&subs->dev->dev, |
1307 | "Corrected urb data len. %d->%d\n", | |
edcd3633 DM |
1308 | oldbytes, bytes); |
1309 | } | |
1310 | /* update the current pointer */ | |
1311 | spin_lock_irqsave(&subs->lock, flags); | |
1312 | oldptr = subs->hwptr_done; | |
1313 | subs->hwptr_done += bytes; | |
1314 | if (subs->hwptr_done >= runtime->buffer_size * stride) | |
1315 | subs->hwptr_done -= runtime->buffer_size * stride; | |
1316 | frames = (bytes + (oldptr % stride)) / stride; | |
1317 | subs->transfer_done += frames; | |
1318 | if (subs->transfer_done >= runtime->period_size) { | |
1319 | subs->transfer_done -= runtime->period_size; | |
1320 | period_elapsed = 1; | |
1321 | } | |
e4cc6153 PLB |
1322 | /* capture delay is by construction limited to one URB, |
1323 | * reset delays here | |
1324 | */ | |
1325 | runtime->delay = subs->last_delay = 0; | |
1326 | ||
1327 | /* realign last_frame_number */ | |
1328 | subs->last_frame_number = current_frame_number; | |
1329 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1330 | ||
edcd3633 DM |
1331 | spin_unlock_irqrestore(&subs->lock, flags); |
1332 | /* copy a data chunk */ | |
1333 | if (oldptr + bytes > runtime->buffer_size * stride) { | |
1334 | unsigned int bytes1 = | |
1335 | runtime->buffer_size * stride - oldptr; | |
1336 | memcpy(runtime->dma_area + oldptr, cp, bytes1); | |
1337 | memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1); | |
1338 | } else { | |
1339 | memcpy(runtime->dma_area + oldptr, cp, bytes); | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | if (period_elapsed) | |
1344 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1345 | } | |
1346 | ||
d24f5061 DM |
1347 | static inline void fill_playback_urb_dsd_dop(struct snd_usb_substream *subs, |
1348 | struct urb *urb, unsigned int bytes) | |
1349 | { | |
1350 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1351 | unsigned int stride = runtime->frame_bits >> 3; | |
1352 | unsigned int dst_idx = 0; | |
1353 | unsigned int src_idx = subs->hwptr_done; | |
1354 | unsigned int wrap = runtime->buffer_size * stride; | |
1355 | u8 *dst = urb->transfer_buffer; | |
1356 | u8 *src = runtime->dma_area; | |
1357 | u8 marker[] = { 0x05, 0xfa }; | |
1358 | ||
1359 | /* | |
1360 | * The DSP DOP format defines a way to transport DSD samples over | |
1361 | * normal PCM data endpoints. It requires stuffing of marker bytes | |
1362 | * (0x05 and 0xfa, alternating per sample frame), and then expects | |
1363 | * 2 additional bytes of actual payload. The whole frame is stored | |
1364 | * LSB. | |
1365 | * | |
1366 | * Hence, for a stereo transport, the buffer layout looks like this, | |
1367 | * where L refers to left channel samples and R to right. | |
1368 | * | |
1369 | * L1 L2 0x05 R1 R2 0x05 L3 L4 0xfa R3 R4 0xfa | |
1370 | * L5 L6 0x05 R5 R6 0x05 L7 L8 0xfa R7 R8 0xfa | |
1371 | * ..... | |
1372 | * | |
1373 | */ | |
1374 | ||
1375 | while (bytes--) { | |
1376 | if (++subs->dsd_dop.byte_idx == 3) { | |
1377 | /* frame boundary? */ | |
1378 | dst[dst_idx++] = marker[subs->dsd_dop.marker]; | |
1379 | src_idx += 2; | |
1380 | subs->dsd_dop.byte_idx = 0; | |
1381 | ||
1382 | if (++subs->dsd_dop.channel % runtime->channels == 0) { | |
1383 | /* alternate the marker */ | |
1384 | subs->dsd_dop.marker++; | |
1385 | subs->dsd_dop.marker %= ARRAY_SIZE(marker); | |
1386 | subs->dsd_dop.channel = 0; | |
1387 | } | |
1388 | } else { | |
1389 | /* stuff the DSD payload */ | |
1390 | int idx = (src_idx + subs->dsd_dop.byte_idx - 1) % wrap; | |
44dcbbb1 DM |
1391 | |
1392 | if (subs->cur_audiofmt->dsd_bitrev) | |
1393 | dst[dst_idx++] = bitrev8(src[idx]); | |
1394 | else | |
1395 | dst[dst_idx++] = src[idx]; | |
1396 | ||
d24f5061 DM |
1397 | subs->hwptr_done++; |
1398 | } | |
1399 | } | |
4c4e4391 RW |
1400 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1401 | subs->hwptr_done -= runtime->buffer_size * stride; | |
d24f5061 DM |
1402 | } |
1403 | ||
b97a9369 RW |
1404 | static void copy_to_urb(struct snd_usb_substream *subs, struct urb *urb, |
1405 | int offset, int stride, unsigned int bytes) | |
07a40c2f RW |
1406 | { |
1407 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1408 | ||
1409 | if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { | |
1410 | /* err, the transferred area goes over buffer boundary. */ | |
1411 | unsigned int bytes1 = | |
1412 | runtime->buffer_size * stride - subs->hwptr_done; | |
b97a9369 | 1413 | memcpy(urb->transfer_buffer + offset, |
07a40c2f | 1414 | runtime->dma_area + subs->hwptr_done, bytes1); |
b97a9369 | 1415 | memcpy(urb->transfer_buffer + offset + bytes1, |
07a40c2f RW |
1416 | runtime->dma_area, bytes - bytes1); |
1417 | } else { | |
b97a9369 | 1418 | memcpy(urb->transfer_buffer + offset, |
07a40c2f RW |
1419 | runtime->dma_area + subs->hwptr_done, bytes); |
1420 | } | |
1421 | subs->hwptr_done += bytes; | |
4c4e4391 RW |
1422 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1423 | subs->hwptr_done -= runtime->buffer_size * stride; | |
07a40c2f RW |
1424 | } |
1425 | ||
e0570446 RW |
1426 | static unsigned int copy_to_urb_quirk(struct snd_usb_substream *subs, |
1427 | struct urb *urb, int stride, | |
1428 | unsigned int bytes) | |
1429 | { | |
1430 | __le32 packet_length; | |
1431 | int i; | |
1432 | ||
1433 | /* Put __le32 length descriptor at start of each packet. */ | |
1434 | for (i = 0; i < urb->number_of_packets; i++) { | |
1435 | unsigned int length = urb->iso_frame_desc[i].length; | |
1436 | unsigned int offset = urb->iso_frame_desc[i].offset; | |
1437 | ||
1438 | packet_length = cpu_to_le32(length); | |
1439 | offset += i * sizeof(packet_length); | |
1440 | urb->iso_frame_desc[i].offset = offset; | |
1441 | urb->iso_frame_desc[i].length += sizeof(packet_length); | |
1442 | memcpy(urb->transfer_buffer + offset, | |
1443 | &packet_length, sizeof(packet_length)); | |
1444 | copy_to_urb(subs, urb, offset + sizeof(packet_length), | |
1445 | stride, length); | |
1446 | } | |
1447 | /* Adjust transfer size accordingly. */ | |
1448 | bytes += urb->number_of_packets * sizeof(packet_length); | |
1449 | return bytes; | |
1450 | } | |
1451 | ||
edcd3633 DM |
1452 | static void prepare_playback_urb(struct snd_usb_substream *subs, |
1453 | struct urb *urb) | |
1454 | { | |
1455 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
245baf98 | 1456 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
edcd3633 DM |
1457 | struct snd_urb_ctx *ctx = urb->context; |
1458 | unsigned int counts, frames, bytes; | |
1459 | int i, stride, period_elapsed = 0; | |
1460 | unsigned long flags; | |
1461 | ||
1462 | stride = runtime->frame_bits >> 3; | |
1463 | ||
1464 | frames = 0; | |
1465 | urb->number_of_packets = 0; | |
1466 | spin_lock_irqsave(&subs->lock, flags); | |
976b6c06 | 1467 | subs->frame_limit += ep->max_urb_frames; |
edcd3633 | 1468 | for (i = 0; i < ctx->packets; i++) { |
245baf98 DM |
1469 | if (ctx->packet_size[i]) |
1470 | counts = ctx->packet_size[i]; | |
1471 | else | |
1472 | counts = snd_usb_endpoint_next_packet_size(ep); | |
1473 | ||
edcd3633 | 1474 | /* set up descriptor */ |
8a2a74d2 DM |
1475 | urb->iso_frame_desc[i].offset = frames * ep->stride; |
1476 | urb->iso_frame_desc[i].length = counts * ep->stride; | |
edcd3633 DM |
1477 | frames += counts; |
1478 | urb->number_of_packets++; | |
1479 | subs->transfer_done += counts; | |
1480 | if (subs->transfer_done >= runtime->period_size) { | |
1481 | subs->transfer_done -= runtime->period_size; | |
976b6c06 | 1482 | subs->frame_limit = 0; |
edcd3633 DM |
1483 | period_elapsed = 1; |
1484 | if (subs->fmt_type == UAC_FORMAT_TYPE_II) { | |
1485 | if (subs->transfer_done > 0) { | |
1486 | /* FIXME: fill-max mode is not | |
1487 | * supported yet */ | |
1488 | frames -= subs->transfer_done; | |
1489 | counts -= subs->transfer_done; | |
1490 | urb->iso_frame_desc[i].length = | |
8a2a74d2 | 1491 | counts * ep->stride; |
edcd3633 DM |
1492 | subs->transfer_done = 0; |
1493 | } | |
1494 | i++; | |
1495 | if (i < ctx->packets) { | |
1496 | /* add a transfer delimiter */ | |
1497 | urb->iso_frame_desc[i].offset = | |
8a2a74d2 | 1498 | frames * ep->stride; |
edcd3633 DM |
1499 | urb->iso_frame_desc[i].length = 0; |
1500 | urb->number_of_packets++; | |
1501 | } | |
1502 | break; | |
1503 | } | |
1504 | } | |
976b6c06 AS |
1505 | /* finish at the period boundary or after enough frames */ |
1506 | if ((period_elapsed || | |
1507 | subs->transfer_done >= subs->frame_limit) && | |
1508 | !snd_usb_endpoint_implicit_feedback_sink(ep)) | |
edcd3633 DM |
1509 | break; |
1510 | } | |
8a2a74d2 | 1511 | bytes = frames * ep->stride; |
d24f5061 DM |
1512 | |
1513 | if (unlikely(subs->pcm_format == SNDRV_PCM_FORMAT_DSD_U16_LE && | |
1514 | subs->cur_audiofmt->dsd_dop)) { | |
1515 | fill_playback_urb_dsd_dop(subs, urb, bytes); | |
44dcbbb1 DM |
1516 | } else if (unlikely(subs->pcm_format == SNDRV_PCM_FORMAT_DSD_U8 && |
1517 | subs->cur_audiofmt->dsd_bitrev)) { | |
1518 | /* bit-reverse the bytes */ | |
1519 | u8 *buf = urb->transfer_buffer; | |
1520 | for (i = 0; i < bytes; i++) { | |
1521 | int idx = (subs->hwptr_done + i) | |
1522 | % (runtime->buffer_size * stride); | |
1523 | buf[i] = bitrev8(runtime->dma_area[idx]); | |
1524 | } | |
1525 | ||
1526 | subs->hwptr_done += bytes; | |
4c4e4391 RW |
1527 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1528 | subs->hwptr_done -= runtime->buffer_size * stride; | |
edcd3633 | 1529 | } else { |
d24f5061 | 1530 | /* usual PCM */ |
e0570446 RW |
1531 | if (!subs->tx_length_quirk) |
1532 | copy_to_urb(subs, urb, 0, stride, bytes); | |
1533 | else | |
1534 | bytes = copy_to_urb_quirk(subs, urb, stride, bytes); | |
1535 | /* bytes is now amount of outgoing data */ | |
edcd3633 | 1536 | } |
d24f5061 | 1537 | |
fbcfbf5f DM |
1538 | /* update delay with exact number of samples queued */ |
1539 | runtime->delay = subs->last_delay; | |
edcd3633 | 1540 | runtime->delay += frames; |
fbcfbf5f DM |
1541 | subs->last_delay = runtime->delay; |
1542 | ||
1543 | /* realign last_frame_number */ | |
1544 | subs->last_frame_number = usb_get_current_frame_number(subs->dev); | |
1545 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1546 | ||
ea33d359 PLB |
1547 | if (subs->trigger_tstamp_pending_update) { |
1548 | /* this is the first actual URB submitted, | |
1549 | * update trigger timestamp to reflect actual start time | |
1550 | */ | |
1551 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); | |
1552 | subs->trigger_tstamp_pending_update = false; | |
1553 | } | |
1554 | ||
edcd3633 DM |
1555 | spin_unlock_irqrestore(&subs->lock, flags); |
1556 | urb->transfer_buffer_length = bytes; | |
1557 | if (period_elapsed) | |
1558 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1559 | } | |
1560 | ||
1561 | /* | |
1562 | * process after playback data complete | |
1563 | * - decrease the delay count again | |
1564 | */ | |
1565 | static void retire_playback_urb(struct snd_usb_substream *subs, | |
1566 | struct urb *urb) | |
1567 | { | |
1568 | unsigned long flags; | |
1569 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
8a2a74d2 DM |
1570 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
1571 | int processed = urb->transfer_buffer_length / ep->stride; | |
fbcfbf5f | 1572 | int est_delay; |
edcd3633 | 1573 | |
1213a205 TI |
1574 | /* ignore the delay accounting when procssed=0 is given, i.e. |
1575 | * silent payloads are procssed before handling the actual data | |
1576 | */ | |
1577 | if (!processed) | |
1578 | return; | |
1579 | ||
edcd3633 | 1580 | spin_lock_irqsave(&subs->lock, flags); |
48779a0b TI |
1581 | if (!subs->last_delay) |
1582 | goto out; /* short path */ | |
1583 | ||
fbcfbf5f DM |
1584 | est_delay = snd_usb_pcm_delay(subs, runtime->rate); |
1585 | /* update delay with exact number of samples played */ | |
1586 | if (processed > subs->last_delay) | |
1587 | subs->last_delay = 0; | |
edcd3633 | 1588 | else |
fbcfbf5f DM |
1589 | subs->last_delay -= processed; |
1590 | runtime->delay = subs->last_delay; | |
1591 | ||
1592 | /* | |
1593 | * Report when delay estimate is off by more than 2ms. | |
1594 | * The error should be lower than 2ms since the estimate relies | |
1595 | * on two reads of a counter updated every ms. | |
1596 | */ | |
b7a77235 SE |
1597 | if (abs(est_delay - subs->last_delay) * 1000 > runtime->rate * 2) |
1598 | dev_dbg_ratelimited(&subs->dev->dev, | |
0ba41d91 | 1599 | "delay: estimated %d, actual %d\n", |
fbcfbf5f DM |
1600 | est_delay, subs->last_delay); |
1601 | ||
48779a0b TI |
1602 | if (!subs->running) { |
1603 | /* update last_frame_number for delay counting here since | |
1604 | * prepare_playback_urb won't be called during pause | |
1605 | */ | |
1606 | subs->last_frame_number = | |
1607 | usb_get_current_frame_number(subs->dev) & 0xff; | |
1608 | } | |
1609 | ||
1610 | out: | |
edcd3633 | 1611 | spin_unlock_irqrestore(&subs->lock, flags); |
e5779998 DM |
1612 | } |
1613 | ||
1614 | static int snd_usb_playback_open(struct snd_pcm_substream *substream) | |
1615 | { | |
1616 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK); | |
1617 | } | |
1618 | ||
1619 | static int snd_usb_playback_close(struct snd_pcm_substream *substream) | |
1620 | { | |
1621 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK); | |
1622 | } | |
1623 | ||
1624 | static int snd_usb_capture_open(struct snd_pcm_substream *substream) | |
1625 | { | |
1626 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE); | |
1627 | } | |
1628 | ||
1629 | static int snd_usb_capture_close(struct snd_pcm_substream *substream) | |
1630 | { | |
1631 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE); | |
1632 | } | |
1633 | ||
edcd3633 DM |
1634 | static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, |
1635 | int cmd) | |
1636 | { | |
1637 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1638 | ||
1639 | switch (cmd) { | |
1640 | case SNDRV_PCM_TRIGGER_START: | |
ea33d359 | 1641 | subs->trigger_tstamp_pending_update = true; |
edcd3633 DM |
1642 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
1643 | subs->data_endpoint->prepare_data_urb = prepare_playback_urb; | |
1644 | subs->data_endpoint->retire_data_urb = retire_playback_urb; | |
97f8d3b6 | 1645 | subs->running = 1; |
edcd3633 DM |
1646 | return 0; |
1647 | case SNDRV_PCM_TRIGGER_STOP: | |
a9bb3626 | 1648 | stop_endpoints(subs, false); |
97f8d3b6 | 1649 | subs->running = 0; |
edcd3633 DM |
1650 | return 0; |
1651 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1652 | subs->data_endpoint->prepare_data_urb = NULL; | |
48779a0b TI |
1653 | /* keep retire_data_urb for delay calculation */ |
1654 | subs->data_endpoint->retire_data_urb = retire_playback_urb; | |
97f8d3b6 | 1655 | subs->running = 0; |
edcd3633 DM |
1656 | return 0; |
1657 | } | |
1658 | ||
1659 | return -EINVAL; | |
1660 | } | |
1661 | ||
afe25967 DM |
1662 | static int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, |
1663 | int cmd) | |
edcd3633 DM |
1664 | { |
1665 | int err; | |
1666 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1667 | ||
1668 | switch (cmd) { | |
1669 | case SNDRV_PCM_TRIGGER_START: | |
1d0f9530 | 1670 | err = start_endpoints(subs); |
edcd3633 DM |
1671 | if (err < 0) |
1672 | return err; | |
1673 | ||
1674 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1675 | subs->running = 1; |
edcd3633 DM |
1676 | return 0; |
1677 | case SNDRV_PCM_TRIGGER_STOP: | |
a9bb3626 | 1678 | stop_endpoints(subs, false); |
97f8d3b6 | 1679 | subs->running = 0; |
edcd3633 DM |
1680 | return 0; |
1681 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
1682 | subs->data_endpoint->retire_data_urb = NULL; | |
97f8d3b6 | 1683 | subs->running = 0; |
edcd3633 DM |
1684 | return 0; |
1685 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1686 | subs->data_endpoint->retire_data_urb = retire_capture_urb; | |
97f8d3b6 | 1687 | subs->running = 1; |
edcd3633 DM |
1688 | return 0; |
1689 | } | |
1690 | ||
1691 | return -EINVAL; | |
1692 | } | |
1693 | ||
31cb1fb4 | 1694 | static const struct snd_pcm_ops snd_usb_playback_ops = { |
e5779998 DM |
1695 | .open = snd_usb_playback_open, |
1696 | .close = snd_usb_playback_close, | |
1697 | .ioctl = snd_pcm_lib_ioctl, | |
1698 | .hw_params = snd_usb_hw_params, | |
1699 | .hw_free = snd_usb_hw_free, | |
1700 | .prepare = snd_usb_pcm_prepare, | |
1701 | .trigger = snd_usb_substream_playback_trigger, | |
1702 | .pointer = snd_usb_pcm_pointer, | |
1703 | .page = snd_pcm_lib_get_vmalloc_page, | |
1704 | .mmap = snd_pcm_lib_mmap_vmalloc, | |
1705 | }; | |
1706 | ||
31cb1fb4 | 1707 | static const struct snd_pcm_ops snd_usb_capture_ops = { |
e5779998 DM |
1708 | .open = snd_usb_capture_open, |
1709 | .close = snd_usb_capture_close, | |
1710 | .ioctl = snd_pcm_lib_ioctl, | |
1711 | .hw_params = snd_usb_hw_params, | |
1712 | .hw_free = snd_usb_hw_free, | |
1713 | .prepare = snd_usb_pcm_prepare, | |
1714 | .trigger = snd_usb_substream_capture_trigger, | |
1715 | .pointer = snd_usb_pcm_pointer, | |
1716 | .page = snd_pcm_lib_get_vmalloc_page, | |
1717 | .mmap = snd_pcm_lib_mmap_vmalloc, | |
1718 | }; | |
1719 | ||
1720 | void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream) | |
1721 | { | |
1722 | snd_pcm_set_ops(pcm, stream, | |
1723 | stream == SNDRV_PCM_STREAM_PLAYBACK ? | |
1724 | &snd_usb_playback_ops : &snd_usb_capture_ops); | |
1725 | } |