Commit | Line | Data |
---|---|---|
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" | |
c731bc96 | 20 | #include "endpoint.h" |
e5779998 DM |
21 | #include "helper.h" |
22 | #include "pcm.h" | |
79f920fb | 23 | #include "clock.h" |
88a8516a | 24 | #include "power.h" |
66354f18 | 25 | #include "media.h" |
9fddc15e | 26 | #include "implicit.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 | */ | |
cab941b7 | 84 | static const struct audioformat * |
bf6313a0 TI |
85 | find_format(struct list_head *fmt_list_head, snd_pcm_format_t format, |
86 | unsigned int rate, unsigned int channels, bool strict_match, | |
87 | struct snd_usb_substream *subs) | |
e5779998 | 88 | { |
cab941b7 TI |
89 | const struct audioformat *fp; |
90 | const struct audioformat *found = NULL; | |
e5779998 DM |
91 | int cur_attr = 0, attr; |
92 | ||
5a6c3e11 | 93 | list_for_each_entry(fp, fmt_list_head, list) { |
bf6313a0 TI |
94 | if (strict_match) { |
95 | if (!(fp->formats & pcm_format_to_bits(format))) | |
96 | continue; | |
97 | if (fp->channels != channels) | |
98 | continue; | |
99 | } | |
5a6c3e11 | 100 | if (rate < fp->rate_min || rate > fp->rate_max) |
e5779998 | 101 | continue; |
5a6c3e11 | 102 | if (!(fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { |
e5779998 DM |
103 | unsigned int i; |
104 | for (i = 0; i < fp->nr_rates; i++) | |
5a6c3e11 | 105 | if (fp->rate_table[i] == rate) |
e5779998 DM |
106 | break; |
107 | if (i >= fp->nr_rates) | |
108 | continue; | |
109 | } | |
110 | attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
5a6c3e11 | 111 | if (!found) { |
e5779998 DM |
112 | found = fp; |
113 | cur_attr = attr; | |
114 | continue; | |
115 | } | |
116 | /* avoid async out and adaptive in if the other method | |
117 | * supports the same format. | |
118 | * this is a workaround for the case like | |
119 | * M-audio audiophile USB. | |
120 | */ | |
5a6c3e11 | 121 | if (subs && attr != cur_attr) { |
e5779998 DM |
122 | if ((attr == USB_ENDPOINT_SYNC_ASYNC && |
123 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
124 | (attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
125 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) | |
126 | continue; | |
127 | if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC && | |
128 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
129 | (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
130 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { | |
131 | found = fp; | |
132 | cur_attr = attr; | |
133 | continue; | |
134 | } | |
135 | } | |
136 | /* find the format with the largest max. packet size */ | |
137 | if (fp->maxpacksize > found->maxpacksize) { | |
138 | found = fp; | |
139 | cur_attr = attr; | |
140 | } | |
141 | } | |
142 | return found; | |
143 | } | |
144 | ||
cab941b7 | 145 | static const struct audioformat * |
bf6313a0 TI |
146 | find_substream_format(struct snd_usb_substream *subs, |
147 | const struct snd_pcm_hw_params *params) | |
5a6c3e11 | 148 | { |
bf6313a0 TI |
149 | return find_format(&subs->fmt_list, params_format(params), |
150 | params_rate(params), params_channels(params), | |
151 | true, subs); | |
5a6c3e11 TI |
152 | } |
153 | ||
bf6313a0 | 154 | static int init_pitch_v1(struct snd_usb_audio *chip, int ep) |
767d75ad DM |
155 | { |
156 | struct usb_device *dev = chip->dev; | |
767d75ad DM |
157 | unsigned char data[1]; |
158 | int err; | |
159 | ||
767d75ad | 160 | data[0] = 1; |
f25ecf8f TI |
161 | err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, |
162 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, | |
163 | UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, | |
164 | data, sizeof(data)); | |
bf6313a0 | 165 | return err; |
767d75ad | 166 | } |
e5779998 | 167 | |
bf6313a0 | 168 | static int init_pitch_v2(struct snd_usb_audio *chip, int ep) |
92c25611 DM |
169 | { |
170 | struct usb_device *dev = chip->dev; | |
171 | unsigned char data[1]; | |
92c25611 DM |
172 | int err; |
173 | ||
92c25611 | 174 | data[0] = 1; |
f25ecf8f TI |
175 | err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR, |
176 | USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT, | |
177 | UAC2_EP_CS_PITCH << 8, 0, | |
178 | data, sizeof(data)); | |
bf6313a0 | 179 | return err; |
92c25611 DM |
180 | } |
181 | ||
e5779998 | 182 | /* |
92c25611 | 183 | * initialize the pitch control and sample rate |
e5779998 | 184 | */ |
73037c8d | 185 | int snd_usb_init_pitch(struct snd_usb_audio *chip, |
cab941b7 | 186 | const struct audioformat *fmt) |
e5779998 | 187 | { |
bf6313a0 TI |
188 | int err; |
189 | ||
92c25611 DM |
190 | /* if endpoint doesn't have pitch control, bail out */ |
191 | if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) | |
192 | return 0; | |
193 | ||
bf6313a0 TI |
194 | usb_audio_dbg(chip, "enable PITCH for EP 0x%x\n", fmt->endpoint); |
195 | ||
8f898e92 | 196 | switch (fmt->protocol) { |
767d75ad | 197 | case UAC_VERSION_1: |
bf6313a0 TI |
198 | err = init_pitch_v1(chip, fmt->endpoint); |
199 | break; | |
200 | case UAC_VERSION_2: | |
201 | err = init_pitch_v2(chip, fmt->endpoint); | |
202 | break; | |
a2acad82 | 203 | default: |
bf6313a0 TI |
204 | return 0; |
205 | } | |
767d75ad | 206 | |
bf6313a0 TI |
207 | if (err < 0) { |
208 | usb_audio_err(chip, "failed to enable PITCH for EP 0x%x\n", | |
209 | fmt->endpoint); | |
210 | return err; | |
767d75ad | 211 | } |
bf6313a0 TI |
212 | |
213 | return 0; | |
767d75ad DM |
214 | } |
215 | ||
bf6313a0 | 216 | static bool stop_endpoints(struct snd_usb_substream *subs) |
57234bc1 | 217 | { |
bf6313a0 TI |
218 | bool stopped = 0; |
219 | ||
57234bc1 TI |
220 | if (test_and_clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) { |
221 | snd_usb_endpoint_stop(subs->sync_endpoint); | |
bf6313a0 | 222 | stopped = true; |
57234bc1 | 223 | } |
bf6313a0 | 224 | if (test_and_clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) { |
57234bc1 | 225 | snd_usb_endpoint_stop(subs->data_endpoint); |
bf6313a0 TI |
226 | stopped = true; |
227 | } | |
228 | return stopped; | |
57234bc1 TI |
229 | } |
230 | ||
1d0f9530 | 231 | static int start_endpoints(struct snd_usb_substream *subs) |
edcd3633 DM |
232 | { |
233 | int err; | |
234 | ||
235 | if (!subs->data_endpoint) | |
236 | return -EINVAL; | |
237 | ||
238 | if (!test_and_set_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) { | |
bf6313a0 | 239 | err = snd_usb_endpoint_start(subs->data_endpoint); |
edcd3633 DM |
240 | if (err < 0) { |
241 | clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags); | |
57234bc1 | 242 | goto error; |
edcd3633 DM |
243 | } |
244 | } | |
245 | ||
246 | if (subs->sync_endpoint && | |
247 | !test_and_set_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) { | |
bf6313a0 | 248 | err = snd_usb_endpoint_start(subs->sync_endpoint); |
edcd3633 DM |
249 | if (err < 0) { |
250 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); | |
57234bc1 | 251 | goto error; |
edcd3633 DM |
252 | } |
253 | } | |
254 | ||
255 | return 0; | |
57234bc1 TI |
256 | |
257 | error: | |
258 | stop_endpoints(subs); | |
259 | return err; | |
edcd3633 DM |
260 | } |
261 | ||
dc5eafe7 TI |
262 | static void sync_pending_stops(struct snd_usb_substream *subs) |
263 | { | |
264 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); | |
265 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
266 | } | |
267 | ||
dc5eafe7 TI |
268 | /* PCM sync_stop callback */ |
269 | static int snd_usb_pcm_sync_stop(struct snd_pcm_substream *substream) | |
270 | { | |
271 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
272 | ||
273 | if (!snd_usb_lock_shutdown(subs->stream->chip)) { | |
274 | sync_pending_stops(subs); | |
275 | snd_usb_unlock_shutdown(subs->stream->chip); | |
b2eb950d | 276 | } |
dc5eafe7 | 277 | return 0; |
edcd3633 DM |
278 | } |
279 | ||
9fddc15e | 280 | /* Set up sync endpoint */ |
f6581c0e TI |
281 | int snd_usb_audioformat_set_sync_ep(struct snd_usb_audio *chip, |
282 | struct audioformat *fmt) | |
a60945fd | 283 | { |
f6581c0e | 284 | struct usb_device *dev = chip->dev; |
f6581c0e TI |
285 | struct usb_host_interface *alts; |
286 | struct usb_interface_descriptor *altsd; | |
287 | unsigned int ep, attr, sync_attr; | |
288 | bool is_playback; | |
a60945fd EZ |
289 | int err; |
290 | ||
e42a09bc | 291 | alts = snd_usb_get_host_interface(chip, fmt->iface, fmt->altsetting); |
f6581c0e | 292 | if (!alts) |
2bc16b9f | 293 | return 0; |
f6581c0e TI |
294 | altsd = get_iface_desc(alts); |
295 | ||
9fddc15e TI |
296 | err = snd_usb_parse_implicit_fb_quirk(chip, fmt, alts); |
297 | if (err > 0) | |
298 | return 0; /* matched */ | |
299 | ||
300 | /* | |
301 | * Generic sync EP handling | |
302 | */ | |
2bc16b9f | 303 | |
f34d0650 EZ |
304 | if (altsd->bNumEndpoints < 2) |
305 | return 0; | |
c75a8a7a | 306 | |
9fddc15e | 307 | is_playback = !(get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN); |
f6581c0e | 308 | attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; |
395ae54b PLB |
309 | if ((is_playback && (attr == USB_ENDPOINT_SYNC_SYNC || |
310 | attr == USB_ENDPOINT_SYNC_ADAPTIVE)) || | |
f34d0650 EZ |
311 | (!is_playback && attr != USB_ENDPOINT_SYNC_ADAPTIVE)) |
312 | return 0; | |
edcd3633 | 313 | |
f6581c0e TI |
314 | sync_attr = get_endpoint(alts, 1)->bmAttributes; |
315 | ||
395ae54b PLB |
316 | /* |
317 | * In case of illegal SYNC_NONE for OUT endpoint, we keep going to see | |
318 | * if we don't find a sync endpoint, as on M-Audio Transit. In case of | |
319 | * error fall back to SYNC mode and don't create sync endpoint | |
320 | */ | |
321 | ||
f34d0650 EZ |
322 | /* check sync-pipe endpoint */ |
323 | /* ... and check descriptor size before accessing bSynchAddress | |
324 | because there is a version of the SB Audigy 2 NX firmware lacking | |
325 | the audio fields in the endpoint descriptors */ | |
f6581c0e | 326 | if ((sync_attr & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC || |
f34d0650 | 327 | (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
95fec883 | 328 | get_endpoint(alts, 1)->bSynchAddress != 0)) { |
0ba41d91 TI |
329 | dev_err(&dev->dev, |
330 | "%d:%d : invalid sync pipe. bmAttributes %02x, bLength %d, bSynchAddress %02x\n", | |
331 | fmt->iface, fmt->altsetting, | |
f34d0650 EZ |
332 | get_endpoint(alts, 1)->bmAttributes, |
333 | get_endpoint(alts, 1)->bLength, | |
334 | get_endpoint(alts, 1)->bSynchAddress); | |
395ae54b PLB |
335 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
336 | return 0; | |
f34d0650 EZ |
337 | return -EINVAL; |
338 | } | |
339 | ep = get_endpoint(alts, 1)->bEndpointAddress; | |
95fec883 | 340 | if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
1b34121d | 341 | get_endpoint(alts, 0)->bSynchAddress != 0 && |
f34d0650 EZ |
342 | ((is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || |
343 | (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { | |
0ba41d91 TI |
344 | dev_err(&dev->dev, |
345 | "%d:%d : invalid sync pipe. is_playback %d, ep %02x, bSynchAddress %02x\n", | |
346 | fmt->iface, fmt->altsetting, | |
f34d0650 | 347 | is_playback, ep, get_endpoint(alts, 0)->bSynchAddress); |
395ae54b PLB |
348 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
349 | return 0; | |
f34d0650 | 350 | return -EINVAL; |
edcd3633 | 351 | } |
e5779998 | 352 | |
f6581c0e TI |
353 | fmt->sync_ep = ep; |
354 | fmt->sync_iface = altsd->bInterfaceNumber; | |
355 | fmt->sync_altsetting = altsd->bAlternateSetting; | |
bf6313a0 | 356 | fmt->sync_ep_idx = 1; |
f6581c0e TI |
357 | if ((sync_attr & USB_ENDPOINT_USAGE_MASK) == USB_ENDPOINT_USAGE_IMPLICIT_FB) |
358 | fmt->implicit_fb = 1; | |
359 | ||
360 | dev_dbg(&dev->dev, "%d:%d: found sync_ep=0x%x, iface=%d, alt=%d, implicit_fb=%d\n", | |
361 | fmt->iface, fmt->altsetting, fmt->sync_ep, fmt->sync_iface, | |
362 | fmt->sync_altsetting, fmt->implicit_fb); | |
363 | ||
364 | return 0; | |
365 | } | |
366 | ||
3f59aa11 JS |
367 | static int snd_usb_pcm_change_state(struct snd_usb_substream *subs, int state) |
368 | { | |
369 | int ret; | |
370 | ||
371 | if (!subs->str_pd) | |
372 | return 0; | |
373 | ||
374 | ret = snd_usb_power_domain_set(subs->stream->chip, subs->str_pd, state); | |
375 | if (ret < 0) { | |
376 | dev_err(&subs->dev->dev, | |
377 | "Cannot change Power Domain ID: %d to state: %d. Err: %d\n", | |
378 | subs->str_pd->pd_id, state, ret); | |
379 | return ret; | |
380 | } | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
385 | int snd_usb_pcm_suspend(struct snd_usb_stream *as) | |
386 | { | |
387 | int ret; | |
388 | ||
389 | ret = snd_usb_pcm_change_state(&as->substream[0], UAC3_PD_STATE_D2); | |
390 | if (ret < 0) | |
391 | return ret; | |
392 | ||
393 | ret = snd_usb_pcm_change_state(&as->substream[1], UAC3_PD_STATE_D2); | |
394 | if (ret < 0) | |
395 | return ret; | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
400 | int snd_usb_pcm_resume(struct snd_usb_stream *as) | |
401 | { | |
402 | int ret; | |
403 | ||
a0a4959e | 404 | ret = snd_usb_pcm_change_state(&as->substream[0], UAC3_PD_STATE_D1); |
3f59aa11 JS |
405 | if (ret < 0) |
406 | return ret; | |
407 | ||
a0a4959e | 408 | ret = snd_usb_pcm_change_state(&as->substream[1], UAC3_PD_STATE_D1); |
3f59aa11 JS |
409 | if (ret < 0) |
410 | return ret; | |
411 | ||
412 | return 0; | |
413 | } | |
414 | ||
bf6313a0 TI |
415 | static void close_endpoints(struct snd_usb_audio *chip, |
416 | struct snd_usb_substream *subs) | |
417 | { | |
418 | if (subs->data_endpoint) { | |
419 | snd_usb_endpoint_set_sync(chip, subs->data_endpoint, NULL); | |
420 | snd_usb_endpoint_close(chip, subs->data_endpoint); | |
421 | subs->data_endpoint = NULL; | |
422 | } | |
423 | ||
424 | if (subs->sync_endpoint) { | |
425 | snd_usb_endpoint_close(chip, subs->sync_endpoint); | |
426 | subs->sync_endpoint = NULL; | |
427 | } | |
428 | } | |
429 | ||
430 | static int configure_endpoints(struct snd_usb_audio *chip, | |
431 | struct snd_usb_substream *subs) | |
432 | { | |
433 | int err; | |
434 | ||
435 | if (subs->data_endpoint->need_setup) { | |
436 | /* stop any running stream beforehand */ | |
437 | if (stop_endpoints(subs)) | |
438 | sync_pending_stops(subs); | |
439 | err = snd_usb_endpoint_configure(chip, subs->data_endpoint); | |
440 | if (err < 0) | |
441 | return err; | |
442 | snd_usb_set_format_quirk(subs, subs->cur_audiofmt); | |
443 | } | |
444 | ||
445 | if (subs->sync_endpoint) { | |
446 | err = snd_usb_endpoint_configure(chip, subs->sync_endpoint); | |
447 | if (err < 0) | |
448 | return err; | |
449 | } | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
e5779998 DM |
454 | /* |
455 | * hw_params callback | |
456 | * | |
457 | * allocate a buffer and set the given audio format. | |
458 | * | |
459 | * so far we use a physically linear buffer although packetize transfer | |
460 | * doesn't need a continuous area. | |
461 | * if sg buffer is supported on the later version of alsa, we'll follow | |
462 | * that. | |
463 | */ | |
464 | static int snd_usb_hw_params(struct snd_pcm_substream *substream, | |
465 | struct snd_pcm_hw_params *hw_params) | |
466 | { | |
467 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
bf6313a0 | 468 | struct snd_usb_audio *chip = subs->stream->chip; |
cab941b7 TI |
469 | const struct audioformat *fmt; |
470 | const struct audioformat *sync_fmt; | |
61a70950 | 471 | int ret; |
e5779998 | 472 | |
66354f18 SK |
473 | ret = snd_media_start_pipeline(subs); |
474 | if (ret) | |
475 | return ret; | |
476 | ||
bf6313a0 | 477 | fmt = find_substream_format(subs, hw_params); |
e5779998 | 478 | if (!fmt) { |
bf6313a0 TI |
479 | usb_audio_dbg(chip, |
480 | "cannot find format: format=%s, rate=%d, channels=%d\n", | |
481 | snd_pcm_format_name(params_format(hw_params)), | |
482 | params_rate(hw_params), params_channels(hw_params)); | |
66354f18 SK |
483 | ret = -EINVAL; |
484 | goto stop_pipeline; | |
e5779998 DM |
485 | } |
486 | ||
9fddc15e TI |
487 | if (fmt->implicit_fb) { |
488 | sync_fmt = snd_usb_find_implicit_fb_sync_format(chip, fmt, | |
489 | hw_params, | |
490 | !substream->stream); | |
bf6313a0 TI |
491 | if (!sync_fmt) { |
492 | usb_audio_dbg(chip, | |
493 | "cannot find sync format: ep=0x%x, iface=%d:%d, format=%s, rate=%d, channels=%d\n", | |
494 | fmt->sync_ep, fmt->sync_iface, | |
495 | fmt->sync_altsetting, | |
496 | snd_pcm_format_name(params_format(hw_params)), | |
497 | params_rate(hw_params), params_channels(hw_params)); | |
498 | ret = -EINVAL; | |
499 | goto stop_pipeline; | |
500 | } | |
501 | } else { | |
502 | sync_fmt = fmt; | |
503 | } | |
504 | ||
505 | ret = snd_usb_lock_shutdown(chip); | |
47ab1545 | 506 | if (ret < 0) |
66354f18 | 507 | goto stop_pipeline; |
a0a4959e JS |
508 | |
509 | ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D0); | |
510 | if (ret < 0) | |
511 | goto unlock; | |
512 | ||
bf6313a0 TI |
513 | if (subs->data_endpoint) { |
514 | if (snd_usb_endpoint_compatible(chip, subs->data_endpoint, | |
515 | fmt, hw_params)) | |
516 | goto unlock; | |
517 | close_endpoints(chip, subs); | |
518 | } | |
519 | ||
520 | subs->data_endpoint = snd_usb_endpoint_open(chip, fmt, hw_params, false); | |
521 | if (!subs->data_endpoint) { | |
522 | ret = -EINVAL; | |
523 | goto unlock; | |
524 | } | |
525 | ||
526 | if (fmt->sync_ep) { | |
527 | subs->sync_endpoint = snd_usb_endpoint_open(chip, sync_fmt, | |
528 | hw_params, | |
529 | fmt == sync_fmt); | |
530 | if (!subs->sync_endpoint) { | |
531 | ret = -EINVAL; | |
532 | goto unlock; | |
533 | } | |
534 | ||
535 | snd_usb_endpoint_set_sync(chip, subs->data_endpoint, | |
536 | subs->sync_endpoint); | |
537 | } | |
538 | ||
6aa719d1 | 539 | mutex_lock(&chip->mutex); |
bf6313a0 | 540 | subs->cur_audiofmt = fmt; |
6aa719d1 | 541 | mutex_unlock(&chip->mutex); |
bf6313a0 TI |
542 | |
543 | ret = configure_endpoints(chip, subs); | |
bf6313a0 | 544 | |
a0a4959e | 545 | unlock: |
66354f18 | 546 | if (ret < 0) |
bf6313a0 | 547 | close_endpoints(chip, subs); |
66354f18 | 548 | |
bf6313a0 | 549 | snd_usb_unlock_shutdown(chip); |
66354f18 | 550 | stop_pipeline: |
bf6313a0 TI |
551 | if (ret < 0) |
552 | snd_media_stop_pipeline(subs); | |
553 | ||
a0a4959e | 554 | return ret; |
e5779998 DM |
555 | } |
556 | ||
557 | /* | |
558 | * hw_free callback | |
559 | * | |
560 | * reset the audio format and release the buffer | |
561 | */ | |
562 | static int snd_usb_hw_free(struct snd_pcm_substream *substream) | |
563 | { | |
564 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
5a6c3e11 | 565 | struct snd_usb_audio *chip = subs->stream->chip; |
e5779998 | 566 | |
66354f18 | 567 | snd_media_stop_pipeline(subs); |
6aa719d1 | 568 | mutex_lock(&chip->mutex); |
e5779998 | 569 | subs->cur_audiofmt = NULL; |
6aa719d1 | 570 | mutex_unlock(&chip->mutex); |
5a6c3e11 | 571 | if (!snd_usb_lock_shutdown(chip)) { |
bf6313a0 TI |
572 | if (stop_endpoints(subs)) |
573 | sync_pending_stops(subs); | |
574 | close_endpoints(chip, subs); | |
5a6c3e11 | 575 | snd_usb_unlock_shutdown(chip); |
978520b7 | 576 | } |
f274baa4 | 577 | |
6dd9486c | 578 | return 0; |
e5779998 DM |
579 | } |
580 | ||
581 | /* | |
582 | * prepare callback | |
583 | * | |
584 | * only a few subtle things... | |
585 | */ | |
586 | static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) | |
587 | { | |
588 | struct snd_pcm_runtime *runtime = substream->runtime; | |
589 | struct snd_usb_substream *subs = runtime->private_data; | |
bf6313a0 | 590 | struct snd_usb_audio *chip = subs->stream->chip; |
61a70950 | 591 | int ret; |
e5779998 | 592 | |
bf6313a0 | 593 | ret = snd_usb_lock_shutdown(chip); |
47ab1545 TI |
594 | if (ret < 0) |
595 | return ret; | |
978520b7 TI |
596 | if (snd_BUG_ON(!subs->data_endpoint)) { |
597 | ret = -EIO; | |
598 | goto unlock; | |
599 | } | |
edcd3633 | 600 | |
bf6313a0 | 601 | ret = configure_endpoints(chip, subs); |
61a70950 | 602 | if (ret < 0) |
978520b7 | 603 | goto unlock; |
61a70950 | 604 | |
e5779998 DM |
605 | /* reset the pointer */ |
606 | subs->hwptr_done = 0; | |
607 | subs->transfer_done = 0; | |
294c4fb8 PLB |
608 | subs->last_delay = 0; |
609 | subs->last_frame_number = 0; | |
e5779998 DM |
610 | runtime->delay = 0; |
611 | ||
edcd3633 DM |
612 | /* for playback, submit the URBs now; otherwise, the first hwptr_done |
613 | * updates for all URBs would happen at the same time when starting */ | |
614 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) | |
1d0f9530 | 615 | ret = start_endpoints(subs); |
edcd3633 | 616 | |
978520b7 | 617 | unlock: |
bf6313a0 | 618 | snd_usb_unlock_shutdown(chip); |
978520b7 | 619 | return ret; |
e5779998 DM |
620 | } |
621 | ||
7ec827b9 TI |
622 | /* |
623 | * h/w constraints | |
624 | */ | |
625 | ||
626 | #ifdef HW_CONST_DEBUG | |
627 | #define hwc_debug(fmt, args...) pr_debug(fmt, ##args) | |
628 | #else | |
629 | #define hwc_debug(fmt, args...) do { } while(0) | |
630 | #endif | |
631 | ||
aaffbf78 | 632 | static const struct snd_pcm_hardware snd_usb_hardware = |
e5779998 DM |
633 | { |
634 | .info = SNDRV_PCM_INFO_MMAP | | |
635 | SNDRV_PCM_INFO_MMAP_VALID | | |
636 | SNDRV_PCM_INFO_BATCH | | |
637 | SNDRV_PCM_INFO_INTERLEAVED | | |
638 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
639 | SNDRV_PCM_INFO_PAUSE, | |
bf6313a0 TI |
640 | .channels_min = 1, |
641 | .channels_max = 256, | |
e5779998 DM |
642 | .buffer_bytes_max = 1024 * 1024, |
643 | .period_bytes_min = 64, | |
644 | .period_bytes_max = 512 * 1024, | |
645 | .periods_min = 2, | |
646 | .periods_max = 1024, | |
647 | }; | |
648 | ||
649 | static int hw_check_valid_format(struct snd_usb_substream *subs, | |
650 | struct snd_pcm_hw_params *params, | |
cab941b7 | 651 | const struct audioformat *fp) |
e5779998 DM |
652 | { |
653 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
654 | struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
655 | struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
656 | struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
015eb0b0 | 657 | struct snd_mask check_fmts; |
e5779998 DM |
658 | unsigned int ptime; |
659 | ||
660 | /* check the format */ | |
015eb0b0 CL |
661 | snd_mask_none(&check_fmts); |
662 | check_fmts.bits[0] = (u32)fp->formats; | |
663 | check_fmts.bits[1] = (u32)(fp->formats >> 32); | |
664 | snd_mask_intersect(&check_fmts, fmts); | |
665 | if (snd_mask_empty(&check_fmts)) { | |
e4ea77f8 | 666 | hwc_debug(" > check: no supported format 0x%llx\n", fp->formats); |
e5779998 DM |
667 | return 0; |
668 | } | |
669 | /* check the channels */ | |
670 | if (fp->channels < ct->min || fp->channels > ct->max) { | |
671 | hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); | |
672 | return 0; | |
673 | } | |
674 | /* check the rate is within the range */ | |
675 | if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { | |
676 | hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); | |
677 | return 0; | |
678 | } | |
679 | if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { | |
680 | hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); | |
681 | return 0; | |
682 | } | |
683 | /* check whether the period time is >= the data packet interval */ | |
978520b7 | 684 | if (subs->speed != USB_SPEED_FULL) { |
e5779998 DM |
685 | ptime = 125 * (1 << fp->datainterval); |
686 | if (ptime > pt->max || (ptime == pt->max && pt->openmax)) { | |
687 | hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max); | |
688 | return 0; | |
689 | } | |
690 | } | |
691 | return 1; | |
692 | } | |
693 | ||
7726dce1 TI |
694 | static int apply_hw_params_minmax(struct snd_interval *it, unsigned int rmin, |
695 | unsigned int rmax) | |
696 | { | |
697 | int changed; | |
698 | ||
699 | if (rmin > rmax) { | |
700 | hwc_debug(" --> get empty\n"); | |
701 | it->empty = 1; | |
702 | return -EINVAL; | |
703 | } | |
704 | ||
705 | changed = 0; | |
706 | if (it->min < rmin) { | |
707 | it->min = rmin; | |
708 | it->openmin = 0; | |
709 | changed = 1; | |
710 | } | |
711 | if (it->max > rmax) { | |
712 | it->max = rmax; | |
713 | it->openmax = 0; | |
714 | changed = 1; | |
715 | } | |
716 | if (snd_interval_checkempty(it)) { | |
717 | it->empty = 1; | |
718 | return -EINVAL; | |
719 | } | |
720 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
721 | return changed; | |
722 | } | |
723 | ||
e5779998 DM |
724 | static int hw_rule_rate(struct snd_pcm_hw_params *params, |
725 | struct snd_pcm_hw_rule *rule) | |
726 | { | |
727 | struct snd_usb_substream *subs = rule->private; | |
cab941b7 | 728 | const struct audioformat *fp; |
e5779998 | 729 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
bc4e94aa | 730 | unsigned int rmin, rmax, r; |
bc4e94aa | 731 | int i; |
e5779998 DM |
732 | |
733 | hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); | |
bc4e94aa TI |
734 | rmin = UINT_MAX; |
735 | rmax = 0; | |
88766f04 | 736 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
737 | if (!hw_check_valid_format(subs, params, fp)) |
738 | continue; | |
bc4e94aa TI |
739 | if (fp->rate_table && fp->nr_rates) { |
740 | for (i = 0; i < fp->nr_rates; i++) { | |
741 | r = fp->rate_table[i]; | |
742 | if (!snd_interval_test(it, r)) | |
743 | continue; | |
744 | rmin = min(rmin, r); | |
745 | rmax = max(rmax, r); | |
746 | } | |
e5779998 | 747 | } else { |
bc4e94aa TI |
748 | rmin = min(rmin, fp->rate_min); |
749 | rmax = max(rmax, fp->rate_max); | |
e5779998 DM |
750 | } |
751 | } | |
752 | ||
7726dce1 | 753 | return apply_hw_params_minmax(it, rmin, rmax); |
e5779998 DM |
754 | } |
755 | ||
756 | ||
757 | static int hw_rule_channels(struct snd_pcm_hw_params *params, | |
758 | struct snd_pcm_hw_rule *rule) | |
759 | { | |
760 | struct snd_usb_substream *subs = rule->private; | |
cab941b7 | 761 | const struct audioformat *fp; |
e5779998 DM |
762 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
763 | unsigned int rmin, rmax; | |
e5779998 DM |
764 | |
765 | hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); | |
7726dce1 TI |
766 | rmin = UINT_MAX; |
767 | rmax = 0; | |
88766f04 | 768 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
769 | if (!hw_check_valid_format(subs, params, fp)) |
770 | continue; | |
7726dce1 TI |
771 | rmin = min(rmin, fp->channels); |
772 | rmax = max(rmax, fp->channels); | |
e5779998 DM |
773 | } |
774 | ||
7726dce1 | 775 | return apply_hw_params_minmax(it, rmin, rmax); |
e5779998 DM |
776 | } |
777 | ||
e4ea77f8 | 778 | static int apply_hw_params_format_bits(struct snd_mask *fmt, u64 fbits) |
e5779998 | 779 | { |
e5779998 DM |
780 | u32 oldbits[2]; |
781 | int changed; | |
782 | ||
e5779998 DM |
783 | oldbits[0] = fmt->bits[0]; |
784 | oldbits[1] = fmt->bits[1]; | |
785 | fmt->bits[0] &= (u32)fbits; | |
786 | fmt->bits[1] &= (u32)(fbits >> 32); | |
787 | if (!fmt->bits[0] && !fmt->bits[1]) { | |
788 | hwc_debug(" --> get empty\n"); | |
789 | return -EINVAL; | |
790 | } | |
791 | changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); | |
792 | hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); | |
793 | return changed; | |
794 | } | |
795 | ||
e4ea77f8 TI |
796 | static int hw_rule_format(struct snd_pcm_hw_params *params, |
797 | struct snd_pcm_hw_rule *rule) | |
798 | { | |
799 | struct snd_usb_substream *subs = rule->private; | |
800 | const struct audioformat *fp; | |
801 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
802 | u64 fbits; | |
803 | ||
804 | hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); | |
805 | fbits = 0; | |
806 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
807 | if (!hw_check_valid_format(subs, params, fp)) | |
808 | continue; | |
809 | fbits |= fp->formats; | |
810 | } | |
811 | return apply_hw_params_format_bits(fmt, fbits); | |
812 | } | |
813 | ||
e5779998 DM |
814 | static int hw_rule_period_time(struct snd_pcm_hw_params *params, |
815 | struct snd_pcm_hw_rule *rule) | |
816 | { | |
817 | struct snd_usb_substream *subs = rule->private; | |
cab941b7 | 818 | const struct audioformat *fp; |
e5779998 DM |
819 | struct snd_interval *it; |
820 | unsigned char min_datainterval; | |
821 | unsigned int pmin; | |
e5779998 DM |
822 | |
823 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
824 | hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); | |
825 | min_datainterval = 0xff; | |
826 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
827 | if (!hw_check_valid_format(subs, params, fp)) | |
828 | continue; | |
829 | min_datainterval = min(min_datainterval, fp->datainterval); | |
830 | } | |
831 | if (min_datainterval == 0xff) { | |
a7ce2e0d | 832 | hwc_debug(" --> get empty\n"); |
e5779998 DM |
833 | it->empty = 1; |
834 | return -EINVAL; | |
835 | } | |
836 | pmin = 125 * (1 << min_datainterval); | |
7726dce1 TI |
837 | |
838 | return apply_hw_params_minmax(it, pmin, UINT_MAX); | |
e5779998 DM |
839 | } |
840 | ||
e4ea77f8 TI |
841 | /* get the EP or the sync EP for implicit fb when it's already set up */ |
842 | static const struct snd_usb_endpoint * | |
843 | get_sync_ep_from_substream(struct snd_usb_substream *subs) | |
5a6c3e11 TI |
844 | { |
845 | struct snd_usb_audio *chip = subs->stream->chip; | |
cab941b7 | 846 | const struct audioformat *fp; |
e4ea77f8 | 847 | const struct snd_usb_endpoint *ep; |
5a6c3e11 | 848 | |
5a6c3e11 | 849 | list_for_each_entry(fp, &subs->fmt_list, list) { |
54cb3190 | 850 | ep = snd_usb_get_endpoint(chip, fp->endpoint); |
5a6c3e11 | 851 | if (ep && ep->cur_rate) |
e4ea77f8 | 852 | return ep; |
5a6c3e11 TI |
853 | if (!fp->implicit_fb) |
854 | continue; | |
855 | /* for the implicit fb, check the sync ep as well */ | |
54cb3190 | 856 | ep = snd_usb_get_endpoint(chip, fp->sync_ep); |
5a6c3e11 | 857 | if (ep && ep->cur_rate) |
e4ea77f8 | 858 | return ep; |
5a6c3e11 | 859 | } |
e4ea77f8 TI |
860 | return NULL; |
861 | } | |
862 | ||
863 | /* additional hw constraints for implicit feedback mode */ | |
864 | static int hw_rule_format_implicit_fb(struct snd_pcm_hw_params *params, | |
865 | struct snd_pcm_hw_rule *rule) | |
866 | { | |
867 | struct snd_usb_substream *subs = rule->private; | |
868 | const struct snd_usb_endpoint *ep; | |
869 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
5a6c3e11 | 870 | |
e4ea77f8 TI |
871 | ep = get_sync_ep_from_substream(subs); |
872 | if (!ep) | |
5a6c3e11 | 873 | return 0; |
5a6c3e11 | 874 | |
e4ea77f8 TI |
875 | hwc_debug("applying %s\n", __func__); |
876 | return apply_hw_params_format_bits(fmt, pcm_format_to_bits(ep->cur_format)); | |
877 | } | |
5a6c3e11 | 878 | |
e4ea77f8 TI |
879 | static int hw_rule_rate_implicit_fb(struct snd_pcm_hw_params *params, |
880 | struct snd_pcm_hw_rule *rule) | |
881 | { | |
882 | struct snd_usb_substream *subs = rule->private; | |
883 | const struct snd_usb_endpoint *ep; | |
884 | struct snd_interval *it; | |
bf6313a0 | 885 | |
e4ea77f8 TI |
886 | ep = get_sync_ep_from_substream(subs); |
887 | if (!ep) | |
888 | return 0; | |
5a6c3e11 | 889 | |
e4ea77f8 TI |
890 | hwc_debug("applying %s\n", __func__); |
891 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
892 | return apply_hw_params_minmax(it, ep->cur_rate, ep->cur_rate); | |
893 | } | |
894 | ||
895 | static int hw_rule_period_size_implicit_fb(struct snd_pcm_hw_params *params, | |
896 | struct snd_pcm_hw_rule *rule) | |
897 | { | |
898 | struct snd_usb_substream *subs = rule->private; | |
899 | const struct snd_usb_endpoint *ep; | |
900 | struct snd_interval *it; | |
5a6c3e11 | 901 | |
e4ea77f8 TI |
902 | ep = get_sync_ep_from_substream(subs); |
903 | if (!ep) | |
904 | return 0; | |
905 | ||
906 | hwc_debug("applying %s\n", __func__); | |
907 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); | |
908 | return apply_hw_params_minmax(it, ep->cur_period_frames, | |
909 | ep->cur_period_frames); | |
910 | } | |
911 | ||
912 | static int hw_rule_periods_implicit_fb(struct snd_pcm_hw_params *params, | |
913 | struct snd_pcm_hw_rule *rule) | |
914 | { | |
915 | struct snd_usb_substream *subs = rule->private; | |
916 | const struct snd_usb_endpoint *ep; | |
917 | struct snd_interval *it; | |
918 | ||
919 | ep = get_sync_ep_from_substream(subs); | |
920 | if (!ep) | |
921 | return 0; | |
922 | ||
923 | hwc_debug("applying %s\n", __func__); | |
924 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIODS); | |
925 | return apply_hw_params_minmax(it, ep->cur_buffer_periods, | |
926 | ep->cur_buffer_periods); | |
5a6c3e11 | 927 | } |
e5779998 DM |
928 | |
929 | /* | |
930 | * set up the runtime hardware information. | |
931 | */ | |
932 | ||
933 | static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) | |
934 | { | |
cab941b7 | 935 | const struct audioformat *fp; |
e5779998 | 936 | unsigned int pt, ptmin; |
5a6c3e11 | 937 | int param_period_time_if_needed = -1; |
e5779998 DM |
938 | int err; |
939 | ||
940 | runtime->hw.formats = subs->formats; | |
941 | ||
942 | runtime->hw.rate_min = 0x7fffffff; | |
943 | runtime->hw.rate_max = 0; | |
944 | runtime->hw.channels_min = 256; | |
945 | runtime->hw.channels_max = 0; | |
946 | runtime->hw.rates = 0; | |
947 | ptmin = UINT_MAX; | |
948 | /* check min/max rates and channels */ | |
88766f04 | 949 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
950 | runtime->hw.rates |= fp->rates; |
951 | if (runtime->hw.rate_min > fp->rate_min) | |
952 | runtime->hw.rate_min = fp->rate_min; | |
953 | if (runtime->hw.rate_max < fp->rate_max) | |
954 | runtime->hw.rate_max = fp->rate_max; | |
955 | if (runtime->hw.channels_min > fp->channels) | |
956 | runtime->hw.channels_min = fp->channels; | |
957 | if (runtime->hw.channels_max < fp->channels) | |
958 | runtime->hw.channels_max = fp->channels; | |
959 | if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) { | |
960 | /* FIXME: there might be more than one audio formats... */ | |
961 | runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = | |
962 | fp->frame_size; | |
963 | } | |
964 | pt = 125 * (1 << fp->datainterval); | |
965 | ptmin = min(ptmin, pt); | |
966 | } | |
967 | ||
968 | param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME; | |
978520b7 | 969 | if (subs->speed == USB_SPEED_FULL) |
e5779998 DM |
970 | /* full speed devices have fixed data packet interval */ |
971 | ptmin = 1000; | |
972 | if (ptmin == 1000) | |
973 | /* if period time doesn't go below 1 ms, no rules needed */ | |
974 | param_period_time_if_needed = -1; | |
e92be814 TI |
975 | |
976 | err = snd_pcm_hw_constraint_minmax(runtime, | |
977 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
978 | ptmin, UINT_MAX); | |
979 | if (err < 0) | |
980 | return err; | |
981 | ||
982 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
983 | hw_rule_rate, subs, | |
506c203c | 984 | SNDRV_PCM_HW_PARAM_RATE, |
e92be814 TI |
985 | SNDRV_PCM_HW_PARAM_FORMAT, |
986 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
987 | param_period_time_if_needed, | |
988 | -1); | |
989 | if (err < 0) | |
990 | return err; | |
5a6c3e11 | 991 | |
e92be814 TI |
992 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, |
993 | hw_rule_channels, subs, | |
506c203c | 994 | SNDRV_PCM_HW_PARAM_CHANNELS, |
e92be814 TI |
995 | SNDRV_PCM_HW_PARAM_FORMAT, |
996 | SNDRV_PCM_HW_PARAM_RATE, | |
997 | param_period_time_if_needed, | |
998 | -1); | |
999 | if (err < 0) | |
1000 | return err; | |
1001 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1002 | hw_rule_format, subs, | |
506c203c | 1003 | SNDRV_PCM_HW_PARAM_FORMAT, |
e92be814 TI |
1004 | SNDRV_PCM_HW_PARAM_RATE, |
1005 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1006 | param_period_time_if_needed, | |
1007 | -1); | |
1008 | if (err < 0) | |
1009 | return err; | |
e5779998 DM |
1010 | if (param_period_time_if_needed >= 0) { |
1011 | err = snd_pcm_hw_rule_add(runtime, 0, | |
1012 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1013 | hw_rule_period_time, subs, | |
1014 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1015 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1016 | SNDRV_PCM_HW_PARAM_RATE, | |
1017 | -1); | |
1018 | if (err < 0) | |
e92be814 | 1019 | return err; |
e5779998 | 1020 | } |
88a8516a | 1021 | |
e4ea77f8 TI |
1022 | /* additional hw constraints for implicit fb */ |
1023 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1024 | hw_rule_format_implicit_fb, subs, | |
1025 | SNDRV_PCM_HW_PARAM_FORMAT, -1); | |
1026 | if (err < 0) | |
1027 | return err; | |
1028 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1029 | hw_rule_rate_implicit_fb, subs, | |
1030 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1031 | if (err < 0) | |
1032 | return err; | |
1033 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1034 | hw_rule_period_size_implicit_fb, subs, | |
1035 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1036 | if (err < 0) | |
1037 | return err; | |
1038 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1039 | hw_rule_periods_implicit_fb, subs, | |
1040 | SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1041 | if (err < 0) | |
1042 | return err; | |
1043 | ||
1865211d | 1044 | return 0; |
e5779998 DM |
1045 | } |
1046 | ||
6fddc797 | 1047 | static int snd_usb_pcm_open(struct snd_pcm_substream *substream) |
e5779998 | 1048 | { |
6fddc797 | 1049 | int direction = substream->stream; |
e5779998 DM |
1050 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1051 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1052 | struct snd_usb_substream *subs = &as->substream[direction]; | |
66354f18 | 1053 | int ret; |
e5779998 | 1054 | |
e5779998 DM |
1055 | runtime->hw = snd_usb_hardware; |
1056 | runtime->private_data = subs; | |
1057 | subs->pcm_substream = substream; | |
88a8516a | 1058 | /* runtime PM is also done there */ |
d24f5061 DM |
1059 | |
1060 | /* initialize DSD/DOP context */ | |
1061 | subs->dsd_dop.byte_idx = 0; | |
1062 | subs->dsd_dop.channel = 0; | |
1063 | subs->dsd_dop.marker = 1; | |
1064 | ||
66354f18 | 1065 | ret = setup_hw_info(runtime, subs); |
1865211d TI |
1066 | if (ret < 0) |
1067 | return ret; | |
1068 | ret = snd_usb_autoresume(subs->stream->chip); | |
1069 | if (ret < 0) | |
1070 | return ret; | |
1071 | ret = snd_media_stream_init(subs, as->pcm, direction); | |
1072 | if (ret < 0) | |
1073 | snd_usb_autosuspend(subs->stream->chip); | |
66354f18 | 1074 | return ret; |
e5779998 DM |
1075 | } |
1076 | ||
6fddc797 | 1077 | static int snd_usb_pcm_close(struct snd_pcm_substream *substream) |
e5779998 | 1078 | { |
6fddc797 | 1079 | int direction = substream->stream; |
e5779998 DM |
1080 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1081 | struct snd_usb_substream *subs = &as->substream[direction]; | |
a0a4959e | 1082 | int ret; |
e5779998 | 1083 | |
66354f18 | 1084 | snd_media_stop_pipeline(subs); |
68e67f40 | 1085 | |
bf6313a0 | 1086 | if (!snd_usb_lock_shutdown(subs->stream->chip)) { |
a0a4959e | 1087 | ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D1); |
47ab1545 | 1088 | snd_usb_unlock_shutdown(subs->stream->chip); |
a0a4959e JS |
1089 | if (ret < 0) |
1090 | return ret; | |
68e67f40 DM |
1091 | } |
1092 | ||
e5779998 | 1093 | subs->pcm_substream = NULL; |
88a8516a | 1094 | snd_usb_autosuspend(subs->stream->chip); |
edcd3633 | 1095 | |
68e67f40 | 1096 | return 0; |
edcd3633 DM |
1097 | } |
1098 | ||
1099 | /* Since a URB can handle only a single linear buffer, we must use double | |
1100 | * buffering when the data to be transferred overflows the buffer boundary. | |
1101 | * To avoid inconsistencies when updating hwptr_done, we use double buffering | |
1102 | * for all URBs. | |
1103 | */ | |
1104 | static void retire_capture_urb(struct snd_usb_substream *subs, | |
1105 | struct urb *urb) | |
1106 | { | |
1107 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1108 | unsigned int stride, frames, bytes, oldptr; | |
1109 | int i, period_elapsed = 0; | |
1110 | unsigned long flags; | |
1111 | unsigned char *cp; | |
e4cc6153 PLB |
1112 | int current_frame_number; |
1113 | ||
1114 | /* read frame number here, update pointer in critical section */ | |
1115 | current_frame_number = usb_get_current_frame_number(subs->dev); | |
edcd3633 DM |
1116 | |
1117 | stride = runtime->frame_bits >> 3; | |
1118 | ||
1119 | for (i = 0; i < urb->number_of_packets; i++) { | |
1539d4f8 | 1120 | cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset + subs->pkt_offset_adj; |
edcd3633 | 1121 | if (urb->iso_frame_desc[i].status && printk_ratelimit()) { |
0ba41d91 TI |
1122 | dev_dbg(&subs->dev->dev, "frame %d active: %d\n", |
1123 | i, urb->iso_frame_desc[i].status); | |
edcd3633 DM |
1124 | // continue; |
1125 | } | |
1126 | bytes = urb->iso_frame_desc[i].actual_length; | |
1b7ecc24 HM |
1127 | if (subs->stream_offset_adj > 0) { |
1128 | unsigned int adj = min(subs->stream_offset_adj, bytes); | |
1129 | cp += adj; | |
1130 | bytes -= adj; | |
1131 | subs->stream_offset_adj -= adj; | |
1132 | } | |
edcd3633 DM |
1133 | frames = bytes / stride; |
1134 | if (!subs->txfr_quirk) | |
1135 | bytes = frames * stride; | |
1136 | if (bytes % (runtime->sample_bits >> 3) != 0) { | |
edcd3633 | 1137 | int oldbytes = bytes; |
edcd3633 | 1138 | bytes = frames * stride; |
377a879d | 1139 | dev_warn_ratelimited(&subs->dev->dev, |
0ba41d91 | 1140 | "Corrected urb data len. %d->%d\n", |
edcd3633 DM |
1141 | oldbytes, bytes); |
1142 | } | |
1143 | /* update the current pointer */ | |
1144 | spin_lock_irqsave(&subs->lock, flags); | |
1145 | oldptr = subs->hwptr_done; | |
1146 | subs->hwptr_done += bytes; | |
1147 | if (subs->hwptr_done >= runtime->buffer_size * stride) | |
1148 | subs->hwptr_done -= runtime->buffer_size * stride; | |
1149 | frames = (bytes + (oldptr % stride)) / stride; | |
1150 | subs->transfer_done += frames; | |
1151 | if (subs->transfer_done >= runtime->period_size) { | |
1152 | subs->transfer_done -= runtime->period_size; | |
1153 | period_elapsed = 1; | |
1154 | } | |
e4cc6153 PLB |
1155 | /* capture delay is by construction limited to one URB, |
1156 | * reset delays here | |
1157 | */ | |
1158 | runtime->delay = subs->last_delay = 0; | |
1159 | ||
1160 | /* realign last_frame_number */ | |
1161 | subs->last_frame_number = current_frame_number; | |
1162 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1163 | ||
edcd3633 DM |
1164 | spin_unlock_irqrestore(&subs->lock, flags); |
1165 | /* copy a data chunk */ | |
1166 | if (oldptr + bytes > runtime->buffer_size * stride) { | |
1167 | unsigned int bytes1 = | |
1168 | runtime->buffer_size * stride - oldptr; | |
1169 | memcpy(runtime->dma_area + oldptr, cp, bytes1); | |
1170 | memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1); | |
1171 | } else { | |
1172 | memcpy(runtime->dma_area + oldptr, cp, bytes); | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | if (period_elapsed) | |
1177 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1178 | } | |
1179 | ||
d24f5061 DM |
1180 | static inline void fill_playback_urb_dsd_dop(struct snd_usb_substream *subs, |
1181 | struct urb *urb, unsigned int bytes) | |
1182 | { | |
1183 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1184 | unsigned int stride = runtime->frame_bits >> 3; | |
1185 | unsigned int dst_idx = 0; | |
1186 | unsigned int src_idx = subs->hwptr_done; | |
1187 | unsigned int wrap = runtime->buffer_size * stride; | |
1188 | u8 *dst = urb->transfer_buffer; | |
1189 | u8 *src = runtime->dma_area; | |
1190 | u8 marker[] = { 0x05, 0xfa }; | |
1191 | ||
1192 | /* | |
1193 | * The DSP DOP format defines a way to transport DSD samples over | |
1194 | * normal PCM data endpoints. It requires stuffing of marker bytes | |
1195 | * (0x05 and 0xfa, alternating per sample frame), and then expects | |
1196 | * 2 additional bytes of actual payload. The whole frame is stored | |
1197 | * LSB. | |
1198 | * | |
1199 | * Hence, for a stereo transport, the buffer layout looks like this, | |
1200 | * where L refers to left channel samples and R to right. | |
1201 | * | |
1202 | * L1 L2 0x05 R1 R2 0x05 L3 L4 0xfa R3 R4 0xfa | |
1203 | * L5 L6 0x05 R5 R6 0x05 L7 L8 0xfa R7 R8 0xfa | |
1204 | * ..... | |
1205 | * | |
1206 | */ | |
1207 | ||
1208 | while (bytes--) { | |
1209 | if (++subs->dsd_dop.byte_idx == 3) { | |
1210 | /* frame boundary? */ | |
1211 | dst[dst_idx++] = marker[subs->dsd_dop.marker]; | |
1212 | src_idx += 2; | |
1213 | subs->dsd_dop.byte_idx = 0; | |
1214 | ||
1215 | if (++subs->dsd_dop.channel % runtime->channels == 0) { | |
1216 | /* alternate the marker */ | |
1217 | subs->dsd_dop.marker++; | |
1218 | subs->dsd_dop.marker %= ARRAY_SIZE(marker); | |
1219 | subs->dsd_dop.channel = 0; | |
1220 | } | |
1221 | } else { | |
1222 | /* stuff the DSD payload */ | |
1223 | int idx = (src_idx + subs->dsd_dop.byte_idx - 1) % wrap; | |
44dcbbb1 DM |
1224 | |
1225 | if (subs->cur_audiofmt->dsd_bitrev) | |
1226 | dst[dst_idx++] = bitrev8(src[idx]); | |
1227 | else | |
1228 | dst[dst_idx++] = src[idx]; | |
1229 | ||
d24f5061 DM |
1230 | subs->hwptr_done++; |
1231 | } | |
1232 | } | |
4c4e4391 RW |
1233 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1234 | subs->hwptr_done -= runtime->buffer_size * stride; | |
d24f5061 DM |
1235 | } |
1236 | ||
b97a9369 RW |
1237 | static void copy_to_urb(struct snd_usb_substream *subs, struct urb *urb, |
1238 | int offset, int stride, unsigned int bytes) | |
07a40c2f RW |
1239 | { |
1240 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1241 | ||
1242 | if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { | |
1243 | /* err, the transferred area goes over buffer boundary. */ | |
1244 | unsigned int bytes1 = | |
1245 | runtime->buffer_size * stride - subs->hwptr_done; | |
b97a9369 | 1246 | memcpy(urb->transfer_buffer + offset, |
07a40c2f | 1247 | runtime->dma_area + subs->hwptr_done, bytes1); |
b97a9369 | 1248 | memcpy(urb->transfer_buffer + offset + bytes1, |
07a40c2f RW |
1249 | runtime->dma_area, bytes - bytes1); |
1250 | } else { | |
b97a9369 | 1251 | memcpy(urb->transfer_buffer + offset, |
07a40c2f RW |
1252 | runtime->dma_area + subs->hwptr_done, bytes); |
1253 | } | |
1254 | subs->hwptr_done += bytes; | |
4c4e4391 RW |
1255 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1256 | subs->hwptr_done -= runtime->buffer_size * stride; | |
07a40c2f RW |
1257 | } |
1258 | ||
e0570446 RW |
1259 | static unsigned int copy_to_urb_quirk(struct snd_usb_substream *subs, |
1260 | struct urb *urb, int stride, | |
1261 | unsigned int bytes) | |
1262 | { | |
1263 | __le32 packet_length; | |
1264 | int i; | |
1265 | ||
1266 | /* Put __le32 length descriptor at start of each packet. */ | |
1267 | for (i = 0; i < urb->number_of_packets; i++) { | |
1268 | unsigned int length = urb->iso_frame_desc[i].length; | |
1269 | unsigned int offset = urb->iso_frame_desc[i].offset; | |
1270 | ||
1271 | packet_length = cpu_to_le32(length); | |
1272 | offset += i * sizeof(packet_length); | |
1273 | urb->iso_frame_desc[i].offset = offset; | |
1274 | urb->iso_frame_desc[i].length += sizeof(packet_length); | |
1275 | memcpy(urb->transfer_buffer + offset, | |
1276 | &packet_length, sizeof(packet_length)); | |
1277 | copy_to_urb(subs, urb, offset + sizeof(packet_length), | |
1278 | stride, length); | |
1279 | } | |
1280 | /* Adjust transfer size accordingly. */ | |
1281 | bytes += urb->number_of_packets * sizeof(packet_length); | |
1282 | return bytes; | |
1283 | } | |
1284 | ||
edcd3633 DM |
1285 | static void prepare_playback_urb(struct snd_usb_substream *subs, |
1286 | struct urb *urb) | |
1287 | { | |
1288 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
245baf98 | 1289 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
edcd3633 DM |
1290 | struct snd_urb_ctx *ctx = urb->context; |
1291 | unsigned int counts, frames, bytes; | |
1292 | int i, stride, period_elapsed = 0; | |
1293 | unsigned long flags; | |
1294 | ||
1295 | stride = runtime->frame_bits >> 3; | |
1296 | ||
1297 | frames = 0; | |
1298 | urb->number_of_packets = 0; | |
1299 | spin_lock_irqsave(&subs->lock, flags); | |
976b6c06 | 1300 | subs->frame_limit += ep->max_urb_frames; |
edcd3633 | 1301 | for (i = 0; i < ctx->packets; i++) { |
3d58760f | 1302 | counts = snd_usb_endpoint_next_packet_size(ep, ctx, i); |
edcd3633 | 1303 | /* set up descriptor */ |
8a2a74d2 DM |
1304 | urb->iso_frame_desc[i].offset = frames * ep->stride; |
1305 | urb->iso_frame_desc[i].length = counts * ep->stride; | |
edcd3633 DM |
1306 | frames += counts; |
1307 | urb->number_of_packets++; | |
1308 | subs->transfer_done += counts; | |
1309 | if (subs->transfer_done >= runtime->period_size) { | |
1310 | subs->transfer_done -= runtime->period_size; | |
976b6c06 | 1311 | subs->frame_limit = 0; |
edcd3633 DM |
1312 | period_elapsed = 1; |
1313 | if (subs->fmt_type == UAC_FORMAT_TYPE_II) { | |
1314 | if (subs->transfer_done > 0) { | |
1315 | /* FIXME: fill-max mode is not | |
1316 | * supported yet */ | |
1317 | frames -= subs->transfer_done; | |
1318 | counts -= subs->transfer_done; | |
1319 | urb->iso_frame_desc[i].length = | |
8a2a74d2 | 1320 | counts * ep->stride; |
edcd3633 DM |
1321 | subs->transfer_done = 0; |
1322 | } | |
1323 | i++; | |
1324 | if (i < ctx->packets) { | |
1325 | /* add a transfer delimiter */ | |
1326 | urb->iso_frame_desc[i].offset = | |
8a2a74d2 | 1327 | frames * ep->stride; |
edcd3633 DM |
1328 | urb->iso_frame_desc[i].length = 0; |
1329 | urb->number_of_packets++; | |
1330 | } | |
1331 | break; | |
1332 | } | |
1333 | } | |
976b6c06 AS |
1334 | /* finish at the period boundary or after enough frames */ |
1335 | if ((period_elapsed || | |
1336 | subs->transfer_done >= subs->frame_limit) && | |
1337 | !snd_usb_endpoint_implicit_feedback_sink(ep)) | |
edcd3633 DM |
1338 | break; |
1339 | } | |
8a2a74d2 | 1340 | bytes = frames * ep->stride; |
d24f5061 | 1341 | |
6aa719d1 | 1342 | if (unlikely(ep->cur_format == SNDRV_PCM_FORMAT_DSD_U16_LE && |
d24f5061 DM |
1343 | subs->cur_audiofmt->dsd_dop)) { |
1344 | fill_playback_urb_dsd_dop(subs, urb, bytes); | |
6aa719d1 | 1345 | } else if (unlikely(ep->cur_format == SNDRV_PCM_FORMAT_DSD_U8 && |
44dcbbb1 DM |
1346 | subs->cur_audiofmt->dsd_bitrev)) { |
1347 | /* bit-reverse the bytes */ | |
1348 | u8 *buf = urb->transfer_buffer; | |
1349 | for (i = 0; i < bytes; i++) { | |
1350 | int idx = (subs->hwptr_done + i) | |
1351 | % (runtime->buffer_size * stride); | |
1352 | buf[i] = bitrev8(runtime->dma_area[idx]); | |
1353 | } | |
1354 | ||
1355 | subs->hwptr_done += bytes; | |
4c4e4391 RW |
1356 | if (subs->hwptr_done >= runtime->buffer_size * stride) |
1357 | subs->hwptr_done -= runtime->buffer_size * stride; | |
edcd3633 | 1358 | } else { |
d24f5061 | 1359 | /* usual PCM */ |
e0570446 RW |
1360 | if (!subs->tx_length_quirk) |
1361 | copy_to_urb(subs, urb, 0, stride, bytes); | |
1362 | else | |
1363 | bytes = copy_to_urb_quirk(subs, urb, stride, bytes); | |
1364 | /* bytes is now amount of outgoing data */ | |
edcd3633 | 1365 | } |
d24f5061 | 1366 | |
fbcfbf5f DM |
1367 | /* update delay with exact number of samples queued */ |
1368 | runtime->delay = subs->last_delay; | |
edcd3633 | 1369 | runtime->delay += frames; |
fbcfbf5f DM |
1370 | subs->last_delay = runtime->delay; |
1371 | ||
1372 | /* realign last_frame_number */ | |
1373 | subs->last_frame_number = usb_get_current_frame_number(subs->dev); | |
1374 | subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ | |
1375 | ||
ea33d359 PLB |
1376 | if (subs->trigger_tstamp_pending_update) { |
1377 | /* this is the first actual URB submitted, | |
1378 | * update trigger timestamp to reflect actual start time | |
1379 | */ | |
1380 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); | |
1381 | subs->trigger_tstamp_pending_update = false; | |
1382 | } | |
1383 | ||
edcd3633 DM |
1384 | spin_unlock_irqrestore(&subs->lock, flags); |
1385 | urb->transfer_buffer_length = bytes; | |
1386 | if (period_elapsed) | |
1387 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1388 | } | |
1389 | ||
1390 | /* | |
1391 | * process after playback data complete | |
1392 | * - decrease the delay count again | |
1393 | */ | |
1394 | static void retire_playback_urb(struct snd_usb_substream *subs, | |
1395 | struct urb *urb) | |
1396 | { | |
1397 | unsigned long flags; | |
1398 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
8a2a74d2 DM |
1399 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
1400 | int processed = urb->transfer_buffer_length / ep->stride; | |
fbcfbf5f | 1401 | int est_delay; |
edcd3633 | 1402 | |
5ff40e6d AT |
1403 | /* ignore the delay accounting when processed=0 is given, i.e. |
1404 | * silent payloads are processed before handling the actual data | |
1213a205 TI |
1405 | */ |
1406 | if (!processed) | |
1407 | return; | |
1408 | ||
edcd3633 | 1409 | spin_lock_irqsave(&subs->lock, flags); |
48779a0b TI |
1410 | if (!subs->last_delay) |
1411 | goto out; /* short path */ | |
1412 | ||
fbcfbf5f DM |
1413 | est_delay = snd_usb_pcm_delay(subs, runtime->rate); |
1414 | /* update delay with exact number of samples played */ | |
1415 | if (processed > subs->last_delay) | |
1416 | subs->last_delay = 0; | |
edcd3633 | 1417 | else |
fbcfbf5f DM |
1418 | subs->last_delay -= processed; |
1419 | runtime->delay = subs->last_delay; | |
1420 | ||
1421 | /* | |
1422 | * Report when delay estimate is off by more than 2ms. | |
1423 | * The error should be lower than 2ms since the estimate relies | |
1424 | * on two reads of a counter updated every ms. | |
1425 | */ | |
b7a77235 SE |
1426 | if (abs(est_delay - subs->last_delay) * 1000 > runtime->rate * 2) |
1427 | dev_dbg_ratelimited(&subs->dev->dev, | |
0ba41d91 | 1428 | "delay: estimated %d, actual %d\n", |
fbcfbf5f DM |
1429 | est_delay, subs->last_delay); |
1430 | ||
48779a0b TI |
1431 | if (!subs->running) { |
1432 | /* update last_frame_number for delay counting here since | |
1433 | * prepare_playback_urb won't be called during pause | |
1434 | */ | |
1435 | subs->last_frame_number = | |
1436 | usb_get_current_frame_number(subs->dev) & 0xff; | |
1437 | } | |
1438 | ||
1439 | out: | |
edcd3633 | 1440 | spin_unlock_irqrestore(&subs->lock, flags); |
e5779998 DM |
1441 | } |
1442 | ||
edcd3633 DM |
1443 | static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, |
1444 | int cmd) | |
1445 | { | |
1446 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1447 | ||
1448 | switch (cmd) { | |
1449 | case SNDRV_PCM_TRIGGER_START: | |
ea33d359 | 1450 | subs->trigger_tstamp_pending_update = true; |
c0dbbdad | 1451 | fallthrough; |
edcd3633 | 1452 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
96e221f3 TI |
1453 | snd_usb_endpoint_set_callback(subs->data_endpoint, |
1454 | prepare_playback_urb, | |
1455 | retire_playback_urb, | |
1456 | subs); | |
97f8d3b6 | 1457 | subs->running = 1; |
bf6313a0 TI |
1458 | dev_dbg(&subs->dev->dev, "%d:%d Start Playback PCM\n", |
1459 | subs->cur_audiofmt->iface, | |
1460 | subs->cur_audiofmt->altsetting); | |
edcd3633 | 1461 | return 0; |
75c16b51 | 1462 | case SNDRV_PCM_TRIGGER_SUSPEND: |
edcd3633 | 1463 | case SNDRV_PCM_TRIGGER_STOP: |
dc5eafe7 | 1464 | stop_endpoints(subs); |
96e221f3 TI |
1465 | snd_usb_endpoint_set_callback(subs->data_endpoint, |
1466 | NULL, NULL, NULL); | |
97f8d3b6 | 1467 | subs->running = 0; |
bf6313a0 TI |
1468 | dev_dbg(&subs->dev->dev, "%d:%d Stop Playback PCM\n", |
1469 | subs->cur_audiofmt->iface, | |
1470 | subs->cur_audiofmt->altsetting); | |
edcd3633 DM |
1471 | return 0; |
1472 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
48779a0b | 1473 | /* keep retire_data_urb for delay calculation */ |
96e221f3 TI |
1474 | snd_usb_endpoint_set_callback(subs->data_endpoint, |
1475 | NULL, | |
1476 | retire_playback_urb, | |
1477 | subs); | |
97f8d3b6 | 1478 | subs->running = 0; |
bf6313a0 TI |
1479 | dev_dbg(&subs->dev->dev, "%d:%d Pause Playback PCM\n", |
1480 | subs->cur_audiofmt->iface, | |
1481 | subs->cur_audiofmt->altsetting); | |
edcd3633 DM |
1482 | return 0; |
1483 | } | |
1484 | ||
1485 | return -EINVAL; | |
1486 | } | |
1487 | ||
afe25967 DM |
1488 | static int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, |
1489 | int cmd) | |
edcd3633 DM |
1490 | { |
1491 | int err; | |
1492 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1493 | ||
1494 | switch (cmd) { | |
1495 | case SNDRV_PCM_TRIGGER_START: | |
1d0f9530 | 1496 | err = start_endpoints(subs); |
edcd3633 DM |
1497 | if (err < 0) |
1498 | return err; | |
96e221f3 TI |
1499 | fallthrough; |
1500 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1501 | snd_usb_endpoint_set_callback(subs->data_endpoint, | |
1502 | NULL, retire_capture_urb, | |
1503 | subs); | |
97f8d3b6 | 1504 | subs->running = 1; |
bf6313a0 TI |
1505 | dev_dbg(&subs->dev->dev, "%d:%d Start Capture PCM\n", |
1506 | subs->cur_audiofmt->iface, | |
1507 | subs->cur_audiofmt->altsetting); | |
edcd3633 | 1508 | return 0; |
75c16b51 | 1509 | case SNDRV_PCM_TRIGGER_SUSPEND: |
edcd3633 | 1510 | case SNDRV_PCM_TRIGGER_STOP: |
dc5eafe7 | 1511 | stop_endpoints(subs); |
96e221f3 | 1512 | fallthrough; |
edcd3633 | 1513 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
96e221f3 TI |
1514 | snd_usb_endpoint_set_callback(subs->data_endpoint, |
1515 | NULL, NULL, NULL); | |
97f8d3b6 | 1516 | subs->running = 0; |
bf6313a0 TI |
1517 | dev_dbg(&subs->dev->dev, "%d:%d Stop Capture PCM\n", |
1518 | subs->cur_audiofmt->iface, | |
1519 | subs->cur_audiofmt->altsetting); | |
edcd3633 | 1520 | return 0; |
edcd3633 DM |
1521 | } |
1522 | ||
1523 | return -EINVAL; | |
1524 | } | |
1525 | ||
31cb1fb4 | 1526 | static const struct snd_pcm_ops snd_usb_playback_ops = { |
6fddc797 TI |
1527 | .open = snd_usb_pcm_open, |
1528 | .close = snd_usb_pcm_close, | |
e5779998 DM |
1529 | .hw_params = snd_usb_hw_params, |
1530 | .hw_free = snd_usb_hw_free, | |
1531 | .prepare = snd_usb_pcm_prepare, | |
1532 | .trigger = snd_usb_substream_playback_trigger, | |
dc5eafe7 | 1533 | .sync_stop = snd_usb_pcm_sync_stop, |
e5779998 | 1534 | .pointer = snd_usb_pcm_pointer, |
e5779998 DM |
1535 | }; |
1536 | ||
31cb1fb4 | 1537 | static const struct snd_pcm_ops snd_usb_capture_ops = { |
6fddc797 TI |
1538 | .open = snd_usb_pcm_open, |
1539 | .close = snd_usb_pcm_close, | |
e5779998 DM |
1540 | .hw_params = snd_usb_hw_params, |
1541 | .hw_free = snd_usb_hw_free, | |
1542 | .prepare = snd_usb_pcm_prepare, | |
1543 | .trigger = snd_usb_substream_capture_trigger, | |
dc5eafe7 | 1544 | .sync_stop = snd_usb_pcm_sync_stop, |
e5779998 | 1545 | .pointer = snd_usb_pcm_pointer, |
f274baa4 TI |
1546 | }; |
1547 | ||
e5779998 DM |
1548 | void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream) |
1549 | { | |
f274baa4 TI |
1550 | const struct snd_pcm_ops *ops; |
1551 | ||
b315997d | 1552 | ops = stream == SNDRV_PCM_STREAM_PLAYBACK ? |
f274baa4 | 1553 | &snd_usb_playback_ops : &snd_usb_capture_ops; |
f274baa4 TI |
1554 | snd_pcm_set_ops(pcm, stream, ops); |
1555 | } | |
1556 | ||
1557 | void snd_usb_preallocate_buffer(struct snd_usb_substream *subs) | |
1558 | { | |
1559 | struct snd_pcm *pcm = subs->stream->pcm; | |
1560 | struct snd_pcm_substream *s = pcm->streams[subs->direction].substream; | |
1561 | struct device *dev = subs->dev->bus->controller; | |
1562 | ||
b315997d | 1563 | if (snd_usb_use_vmalloc) |
6dd9486c TI |
1564 | snd_pcm_set_managed_buffer(s, SNDRV_DMA_TYPE_VMALLOC, |
1565 | NULL, 0, 0); | |
b315997d | 1566 | else |
6dd9486c TI |
1567 | snd_pcm_set_managed_buffer(s, SNDRV_DMA_TYPE_DEV_SG, |
1568 | dev, 64*1024, 512*1024); | |
e5779998 | 1569 | } |