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 | 31 | /* return the estimated delay based on USB frame counters */ |
cdebd553 | 32 | static snd_pcm_uframes_t snd_usb_pcm_delay(struct snd_usb_substream *subs, |
e8a8f09c | 33 | struct snd_pcm_runtime *runtime) |
294c4fb8 | 34 | { |
e8a8f09c TI |
35 | unsigned int current_frame_number; |
36 | unsigned int frame_diff; | |
294c4fb8 | 37 | int est_delay; |
e8a8f09c | 38 | int queued; |
294c4fb8 | 39 | |
e8a8f09c TI |
40 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) { |
41 | queued = bytes_to_frames(runtime, subs->inflight_bytes); | |
42 | if (!queued) | |
43 | return 0; | |
44 | } else if (!subs->running) { | |
45 | return 0; | |
46 | } | |
48779a0b | 47 | |
294c4fb8 PLB |
48 | current_frame_number = usb_get_current_frame_number(subs->dev); |
49 | /* | |
50 | * HCD implementations use different widths, use lower 8 bits. | |
51 | * The delay will be managed up to 256ms, which is more than | |
52 | * enough | |
53 | */ | |
54 | frame_diff = (current_frame_number - subs->last_frame_number) & 0xff; | |
55 | ||
56 | /* Approximation based on number of samples per USB frame (ms), | |
57 | some truncation for 44.1 but the estimate is good enough */ | |
e8a8f09c TI |
58 | est_delay = frame_diff * runtime->rate / 1000; |
59 | ||
60 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) { | |
61 | est_delay = queued - est_delay; | |
62 | if (est_delay < 0) | |
63 | est_delay = 0; | |
64 | } | |
e4cc6153 | 65 | |
294c4fb8 PLB |
66 | return est_delay; |
67 | } | |
68 | ||
e5779998 DM |
69 | /* |
70 | * return the current pcm pointer. just based on the hwptr_done value. | |
71 | */ | |
72 | static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream) | |
73 | { | |
e8a8f09c TI |
74 | struct snd_pcm_runtime *runtime = substream->runtime; |
75 | struct snd_usb_substream *subs = runtime->private_data; | |
e5779998 DM |
76 | unsigned int hwptr_done; |
77 | ||
47ab1545 | 78 | if (atomic_read(&subs->stream->chip->shutdown)) |
978520b7 | 79 | return SNDRV_PCM_POS_XRUN; |
e5779998 DM |
80 | spin_lock(&subs->lock); |
81 | hwptr_done = subs->hwptr_done; | |
e8a8f09c | 82 | runtime->delay = snd_usb_pcm_delay(subs, runtime); |
e5779998 | 83 | spin_unlock(&subs->lock); |
e8a8f09c | 84 | return bytes_to_frames(runtime, hwptr_done); |
e5779998 DM |
85 | } |
86 | ||
87 | /* | |
88 | * find a matching audio format | |
89 | */ | |
cab941b7 | 90 | static const struct audioformat * |
bf6313a0 TI |
91 | find_format(struct list_head *fmt_list_head, snd_pcm_format_t format, |
92 | unsigned int rate, unsigned int channels, bool strict_match, | |
93 | struct snd_usb_substream *subs) | |
e5779998 | 94 | { |
cab941b7 TI |
95 | const struct audioformat *fp; |
96 | const struct audioformat *found = NULL; | |
e5779998 DM |
97 | int cur_attr = 0, attr; |
98 | ||
5a6c3e11 | 99 | list_for_each_entry(fp, fmt_list_head, list) { |
bf6313a0 TI |
100 | if (strict_match) { |
101 | if (!(fp->formats & pcm_format_to_bits(format))) | |
102 | continue; | |
103 | if (fp->channels != channels) | |
104 | continue; | |
105 | } | |
5a6c3e11 | 106 | if (rate < fp->rate_min || rate > fp->rate_max) |
e5779998 | 107 | continue; |
5a6c3e11 | 108 | if (!(fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { |
e5779998 DM |
109 | unsigned int i; |
110 | for (i = 0; i < fp->nr_rates; i++) | |
5a6c3e11 | 111 | if (fp->rate_table[i] == rate) |
e5779998 DM |
112 | break; |
113 | if (i >= fp->nr_rates) | |
114 | continue; | |
115 | } | |
116 | attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE; | |
5a6c3e11 | 117 | if (!found) { |
e5779998 DM |
118 | found = fp; |
119 | cur_attr = attr; | |
120 | continue; | |
121 | } | |
122 | /* avoid async out and adaptive in if the other method | |
123 | * supports the same format. | |
124 | * this is a workaround for the case like | |
125 | * M-audio audiophile USB. | |
126 | */ | |
5a6c3e11 | 127 | if (subs && attr != cur_attr) { |
e5779998 DM |
128 | if ((attr == USB_ENDPOINT_SYNC_ASYNC && |
129 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
130 | (attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
131 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) | |
132 | continue; | |
133 | if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC && | |
134 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
135 | (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE && | |
136 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { | |
137 | found = fp; | |
138 | cur_attr = attr; | |
139 | continue; | |
140 | } | |
141 | } | |
142 | /* find the format with the largest max. packet size */ | |
143 | if (fp->maxpacksize > found->maxpacksize) { | |
144 | found = fp; | |
145 | cur_attr = attr; | |
146 | } | |
147 | } | |
148 | return found; | |
149 | } | |
150 | ||
cab941b7 | 151 | static const struct audioformat * |
bf6313a0 TI |
152 | find_substream_format(struct snd_usb_substream *subs, |
153 | const struct snd_pcm_hw_params *params) | |
5a6c3e11 | 154 | { |
bf6313a0 TI |
155 | return find_format(&subs->fmt_list, params_format(params), |
156 | params_rate(params), params_channels(params), | |
157 | true, subs); | |
5a6c3e11 TI |
158 | } |
159 | ||
bf6313a0 | 160 | static int init_pitch_v1(struct snd_usb_audio *chip, int ep) |
767d75ad DM |
161 | { |
162 | struct usb_device *dev = chip->dev; | |
767d75ad DM |
163 | unsigned char data[1]; |
164 | int err; | |
165 | ||
767d75ad | 166 | data[0] = 1; |
f25ecf8f TI |
167 | 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, | |
170 | data, sizeof(data)); | |
bf6313a0 | 171 | return err; |
767d75ad | 172 | } |
e5779998 | 173 | |
bf6313a0 | 174 | static int init_pitch_v2(struct snd_usb_audio *chip, int ep) |
92c25611 DM |
175 | { |
176 | struct usb_device *dev = chip->dev; | |
177 | unsigned char data[1]; | |
92c25611 DM |
178 | int err; |
179 | ||
92c25611 | 180 | data[0] = 1; |
f25ecf8f TI |
181 | err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR, |
182 | USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT, | |
183 | UAC2_EP_CS_PITCH << 8, 0, | |
184 | data, sizeof(data)); | |
bf6313a0 | 185 | return err; |
92c25611 DM |
186 | } |
187 | ||
e5779998 | 188 | /* |
92c25611 | 189 | * initialize the pitch control and sample rate |
e5779998 | 190 | */ |
73037c8d | 191 | int snd_usb_init_pitch(struct snd_usb_audio *chip, |
cab941b7 | 192 | const struct audioformat *fmt) |
e5779998 | 193 | { |
bf6313a0 TI |
194 | int err; |
195 | ||
92c25611 DM |
196 | /* if endpoint doesn't have pitch control, bail out */ |
197 | if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) | |
198 | return 0; | |
199 | ||
bf6313a0 TI |
200 | usb_audio_dbg(chip, "enable PITCH for EP 0x%x\n", fmt->endpoint); |
201 | ||
8f898e92 | 202 | switch (fmt->protocol) { |
767d75ad | 203 | case UAC_VERSION_1: |
bf6313a0 TI |
204 | err = init_pitch_v1(chip, fmt->endpoint); |
205 | break; | |
206 | case UAC_VERSION_2: | |
207 | err = init_pitch_v2(chip, fmt->endpoint); | |
208 | break; | |
a2acad82 | 209 | default: |
bf6313a0 TI |
210 | return 0; |
211 | } | |
767d75ad | 212 | |
bf6313a0 TI |
213 | if (err < 0) { |
214 | usb_audio_err(chip, "failed to enable PITCH for EP 0x%x\n", | |
215 | fmt->endpoint); | |
216 | return err; | |
767d75ad | 217 | } |
bf6313a0 TI |
218 | |
219 | return 0; | |
767d75ad DM |
220 | } |
221 | ||
813a17ca | 222 | static bool stop_endpoints(struct snd_usb_substream *subs, bool keep_pending) |
57234bc1 | 223 | { |
bf6313a0 TI |
224 | bool stopped = 0; |
225 | ||
57234bc1 | 226 | if (test_and_clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) { |
813a17ca | 227 | snd_usb_endpoint_stop(subs->sync_endpoint, keep_pending); |
bf6313a0 | 228 | stopped = true; |
57234bc1 | 229 | } |
bf6313a0 | 230 | if (test_and_clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) { |
813a17ca | 231 | snd_usb_endpoint_stop(subs->data_endpoint, keep_pending); |
bf6313a0 TI |
232 | stopped = true; |
233 | } | |
234 | return stopped; | |
57234bc1 TI |
235 | } |
236 | ||
1d0f9530 | 237 | static int start_endpoints(struct snd_usb_substream *subs) |
edcd3633 DM |
238 | { |
239 | int err; | |
240 | ||
241 | if (!subs->data_endpoint) | |
242 | return -EINVAL; | |
243 | ||
244 | if (!test_and_set_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags)) { | |
bf6313a0 | 245 | err = snd_usb_endpoint_start(subs->data_endpoint); |
edcd3633 DM |
246 | if (err < 0) { |
247 | clear_bit(SUBSTREAM_FLAG_DATA_EP_STARTED, &subs->flags); | |
57234bc1 | 248 | goto error; |
edcd3633 DM |
249 | } |
250 | } | |
251 | ||
252 | if (subs->sync_endpoint && | |
253 | !test_and_set_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags)) { | |
bf6313a0 | 254 | err = snd_usb_endpoint_start(subs->sync_endpoint); |
edcd3633 DM |
255 | if (err < 0) { |
256 | clear_bit(SUBSTREAM_FLAG_SYNC_EP_STARTED, &subs->flags); | |
57234bc1 | 257 | goto error; |
edcd3633 DM |
258 | } |
259 | } | |
260 | ||
261 | return 0; | |
57234bc1 TI |
262 | |
263 | error: | |
813a17ca | 264 | stop_endpoints(subs, false); |
57234bc1 | 265 | return err; |
edcd3633 DM |
266 | } |
267 | ||
dc5eafe7 TI |
268 | static void sync_pending_stops(struct snd_usb_substream *subs) |
269 | { | |
270 | snd_usb_endpoint_sync_pending_stop(subs->sync_endpoint); | |
271 | snd_usb_endpoint_sync_pending_stop(subs->data_endpoint); | |
272 | } | |
273 | ||
dc5eafe7 TI |
274 | /* PCM sync_stop callback */ |
275 | static int snd_usb_pcm_sync_stop(struct snd_pcm_substream *substream) | |
276 | { | |
277 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
278 | ||
257d2d7e | 279 | sync_pending_stops(subs); |
dc5eafe7 | 280 | return 0; |
edcd3633 DM |
281 | } |
282 | ||
9fddc15e | 283 | /* Set up sync endpoint */ |
f6581c0e TI |
284 | int snd_usb_audioformat_set_sync_ep(struct snd_usb_audio *chip, |
285 | struct audioformat *fmt) | |
a60945fd | 286 | { |
f6581c0e | 287 | struct usb_device *dev = chip->dev; |
f6581c0e TI |
288 | struct usb_host_interface *alts; |
289 | struct usb_interface_descriptor *altsd; | |
290 | unsigned int ep, attr, sync_attr; | |
291 | bool is_playback; | |
a60945fd EZ |
292 | int err; |
293 | ||
e42a09bc | 294 | alts = snd_usb_get_host_interface(chip, fmt->iface, fmt->altsetting); |
f6581c0e | 295 | if (!alts) |
2bc16b9f | 296 | return 0; |
f6581c0e TI |
297 | altsd = get_iface_desc(alts); |
298 | ||
9fddc15e TI |
299 | err = snd_usb_parse_implicit_fb_quirk(chip, fmt, alts); |
300 | if (err > 0) | |
301 | return 0; /* matched */ | |
302 | ||
303 | /* | |
304 | * Generic sync EP handling | |
305 | */ | |
2bc16b9f | 306 | |
f34d0650 EZ |
307 | if (altsd->bNumEndpoints < 2) |
308 | return 0; | |
c75a8a7a | 309 | |
9fddc15e | 310 | is_playback = !(get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN); |
f6581c0e | 311 | attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; |
395ae54b PLB |
312 | if ((is_playback && (attr == USB_ENDPOINT_SYNC_SYNC || |
313 | attr == USB_ENDPOINT_SYNC_ADAPTIVE)) || | |
f34d0650 EZ |
314 | (!is_playback && attr != USB_ENDPOINT_SYNC_ADAPTIVE)) |
315 | return 0; | |
edcd3633 | 316 | |
f6581c0e TI |
317 | sync_attr = get_endpoint(alts, 1)->bmAttributes; |
318 | ||
395ae54b PLB |
319 | /* |
320 | * In case of illegal SYNC_NONE for OUT endpoint, we keep going to see | |
321 | * if we don't find a sync endpoint, as on M-Audio Transit. In case of | |
322 | * error fall back to SYNC mode and don't create sync endpoint | |
323 | */ | |
324 | ||
f34d0650 EZ |
325 | /* check sync-pipe endpoint */ |
326 | /* ... and check descriptor size before accessing bSynchAddress | |
327 | because there is a version of the SB Audigy 2 NX firmware lacking | |
328 | the audio fields in the endpoint descriptors */ | |
f6581c0e | 329 | if ((sync_attr & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC || |
f34d0650 | 330 | (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
95fec883 | 331 | get_endpoint(alts, 1)->bSynchAddress != 0)) { |
0ba41d91 TI |
332 | dev_err(&dev->dev, |
333 | "%d:%d : invalid sync pipe. bmAttributes %02x, bLength %d, bSynchAddress %02x\n", | |
334 | fmt->iface, fmt->altsetting, | |
f34d0650 EZ |
335 | get_endpoint(alts, 1)->bmAttributes, |
336 | get_endpoint(alts, 1)->bLength, | |
337 | get_endpoint(alts, 1)->bSynchAddress); | |
395ae54b PLB |
338 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
339 | return 0; | |
f34d0650 EZ |
340 | return -EINVAL; |
341 | } | |
342 | ep = get_endpoint(alts, 1)->bEndpointAddress; | |
95fec883 | 343 | if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
1b34121d | 344 | get_endpoint(alts, 0)->bSynchAddress != 0 && |
f34d0650 EZ |
345 | ((is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || |
346 | (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { | |
0ba41d91 TI |
347 | dev_err(&dev->dev, |
348 | "%d:%d : invalid sync pipe. is_playback %d, ep %02x, bSynchAddress %02x\n", | |
349 | fmt->iface, fmt->altsetting, | |
f34d0650 | 350 | is_playback, ep, get_endpoint(alts, 0)->bSynchAddress); |
395ae54b PLB |
351 | if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) |
352 | return 0; | |
f34d0650 | 353 | return -EINVAL; |
edcd3633 | 354 | } |
e5779998 | 355 | |
f6581c0e TI |
356 | fmt->sync_ep = ep; |
357 | fmt->sync_iface = altsd->bInterfaceNumber; | |
358 | fmt->sync_altsetting = altsd->bAlternateSetting; | |
bf6313a0 | 359 | fmt->sync_ep_idx = 1; |
f6581c0e TI |
360 | if ((sync_attr & USB_ENDPOINT_USAGE_MASK) == USB_ENDPOINT_USAGE_IMPLICIT_FB) |
361 | fmt->implicit_fb = 1; | |
362 | ||
363 | dev_dbg(&dev->dev, "%d:%d: found sync_ep=0x%x, iface=%d, alt=%d, implicit_fb=%d\n", | |
364 | fmt->iface, fmt->altsetting, fmt->sync_ep, fmt->sync_iface, | |
365 | fmt->sync_altsetting, fmt->implicit_fb); | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
3f59aa11 JS |
370 | static int snd_usb_pcm_change_state(struct snd_usb_substream *subs, int state) |
371 | { | |
372 | int ret; | |
373 | ||
374 | if (!subs->str_pd) | |
375 | return 0; | |
376 | ||
377 | ret = snd_usb_power_domain_set(subs->stream->chip, subs->str_pd, state); | |
378 | if (ret < 0) { | |
379 | dev_err(&subs->dev->dev, | |
380 | "Cannot change Power Domain ID: %d to state: %d. Err: %d\n", | |
381 | subs->str_pd->pd_id, state, ret); | |
382 | return ret; | |
383 | } | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
388 | int snd_usb_pcm_suspend(struct snd_usb_stream *as) | |
389 | { | |
390 | int ret; | |
391 | ||
392 | ret = snd_usb_pcm_change_state(&as->substream[0], UAC3_PD_STATE_D2); | |
393 | if (ret < 0) | |
394 | return ret; | |
395 | ||
396 | ret = snd_usb_pcm_change_state(&as->substream[1], UAC3_PD_STATE_D2); | |
397 | if (ret < 0) | |
398 | return ret; | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | int snd_usb_pcm_resume(struct snd_usb_stream *as) | |
404 | { | |
405 | int ret; | |
406 | ||
a0a4959e | 407 | ret = snd_usb_pcm_change_state(&as->substream[0], UAC3_PD_STATE_D1); |
3f59aa11 JS |
408 | if (ret < 0) |
409 | return ret; | |
410 | ||
a0a4959e | 411 | ret = snd_usb_pcm_change_state(&as->substream[1], UAC3_PD_STATE_D1); |
3f59aa11 JS |
412 | if (ret < 0) |
413 | return ret; | |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
bf6313a0 TI |
418 | static void close_endpoints(struct snd_usb_audio *chip, |
419 | struct snd_usb_substream *subs) | |
420 | { | |
421 | if (subs->data_endpoint) { | |
422 | snd_usb_endpoint_set_sync(chip, subs->data_endpoint, NULL); | |
423 | snd_usb_endpoint_close(chip, subs->data_endpoint); | |
424 | subs->data_endpoint = NULL; | |
425 | } | |
426 | ||
427 | if (subs->sync_endpoint) { | |
428 | snd_usb_endpoint_close(chip, subs->sync_endpoint); | |
429 | subs->sync_endpoint = NULL; | |
430 | } | |
431 | } | |
432 | ||
433 | static int configure_endpoints(struct snd_usb_audio *chip, | |
434 | struct snd_usb_substream *subs) | |
435 | { | |
436 | int err; | |
437 | ||
438 | if (subs->data_endpoint->need_setup) { | |
439 | /* stop any running stream beforehand */ | |
813a17ca | 440 | if (stop_endpoints(subs, false)) |
bf6313a0 TI |
441 | sync_pending_stops(subs); |
442 | err = snd_usb_endpoint_configure(chip, subs->data_endpoint); | |
443 | if (err < 0) | |
444 | return err; | |
445 | snd_usb_set_format_quirk(subs, subs->cur_audiofmt); | |
446 | } | |
447 | ||
448 | if (subs->sync_endpoint) { | |
449 | err = snd_usb_endpoint_configure(chip, subs->sync_endpoint); | |
450 | if (err < 0) | |
451 | return err; | |
452 | } | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
e5779998 DM |
457 | /* |
458 | * hw_params callback | |
459 | * | |
460 | * allocate a buffer and set the given audio format. | |
461 | * | |
462 | * so far we use a physically linear buffer although packetize transfer | |
463 | * doesn't need a continuous area. | |
464 | * if sg buffer is supported on the later version of alsa, we'll follow | |
465 | * that. | |
466 | */ | |
467 | static int snd_usb_hw_params(struct snd_pcm_substream *substream, | |
468 | struct snd_pcm_hw_params *hw_params) | |
469 | { | |
470 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
bf6313a0 | 471 | struct snd_usb_audio *chip = subs->stream->chip; |
cab941b7 TI |
472 | const struct audioformat *fmt; |
473 | const struct audioformat *sync_fmt; | |
61a70950 | 474 | int ret; |
e5779998 | 475 | |
66354f18 SK |
476 | ret = snd_media_start_pipeline(subs); |
477 | if (ret) | |
478 | return ret; | |
479 | ||
bf6313a0 | 480 | fmt = find_substream_format(subs, hw_params); |
e5779998 | 481 | if (!fmt) { |
bf6313a0 TI |
482 | usb_audio_dbg(chip, |
483 | "cannot find format: format=%s, rate=%d, channels=%d\n", | |
484 | snd_pcm_format_name(params_format(hw_params)), | |
485 | params_rate(hw_params), params_channels(hw_params)); | |
66354f18 SK |
486 | ret = -EINVAL; |
487 | goto stop_pipeline; | |
e5779998 DM |
488 | } |
489 | ||
9fddc15e TI |
490 | if (fmt->implicit_fb) { |
491 | sync_fmt = snd_usb_find_implicit_fb_sync_format(chip, fmt, | |
492 | hw_params, | |
493 | !substream->stream); | |
bf6313a0 TI |
494 | if (!sync_fmt) { |
495 | usb_audio_dbg(chip, | |
496 | "cannot find sync format: ep=0x%x, iface=%d:%d, format=%s, rate=%d, channels=%d\n", | |
497 | fmt->sync_ep, fmt->sync_iface, | |
498 | fmt->sync_altsetting, | |
499 | snd_pcm_format_name(params_format(hw_params)), | |
500 | params_rate(hw_params), params_channels(hw_params)); | |
501 | ret = -EINVAL; | |
502 | goto stop_pipeline; | |
503 | } | |
504 | } else { | |
505 | sync_fmt = fmt; | |
506 | } | |
507 | ||
508 | ret = snd_usb_lock_shutdown(chip); | |
47ab1545 | 509 | if (ret < 0) |
66354f18 | 510 | goto stop_pipeline; |
a0a4959e JS |
511 | |
512 | ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D0); | |
513 | if (ret < 0) | |
514 | goto unlock; | |
515 | ||
bf6313a0 TI |
516 | if (subs->data_endpoint) { |
517 | if (snd_usb_endpoint_compatible(chip, subs->data_endpoint, | |
518 | fmt, hw_params)) | |
519 | goto unlock; | |
520 | close_endpoints(chip, subs); | |
521 | } | |
522 | ||
523 | subs->data_endpoint = snd_usb_endpoint_open(chip, fmt, hw_params, false); | |
524 | if (!subs->data_endpoint) { | |
525 | ret = -EINVAL; | |
526 | goto unlock; | |
527 | } | |
528 | ||
529 | if (fmt->sync_ep) { | |
530 | subs->sync_endpoint = snd_usb_endpoint_open(chip, sync_fmt, | |
531 | hw_params, | |
532 | fmt == sync_fmt); | |
533 | if (!subs->sync_endpoint) { | |
534 | ret = -EINVAL; | |
535 | goto unlock; | |
536 | } | |
537 | ||
538 | snd_usb_endpoint_set_sync(chip, subs->data_endpoint, | |
539 | subs->sync_endpoint); | |
540 | } | |
541 | ||
6aa719d1 | 542 | mutex_lock(&chip->mutex); |
bf6313a0 | 543 | subs->cur_audiofmt = fmt; |
6aa719d1 | 544 | mutex_unlock(&chip->mutex); |
bf6313a0 TI |
545 | |
546 | ret = configure_endpoints(chip, subs); | |
bf6313a0 | 547 | |
a0a4959e | 548 | unlock: |
66354f18 | 549 | if (ret < 0) |
bf6313a0 | 550 | close_endpoints(chip, subs); |
66354f18 | 551 | |
bf6313a0 | 552 | snd_usb_unlock_shutdown(chip); |
66354f18 | 553 | stop_pipeline: |
bf6313a0 TI |
554 | if (ret < 0) |
555 | snd_media_stop_pipeline(subs); | |
556 | ||
a0a4959e | 557 | return ret; |
e5779998 DM |
558 | } |
559 | ||
560 | /* | |
561 | * hw_free callback | |
562 | * | |
563 | * reset the audio format and release the buffer | |
564 | */ | |
565 | static int snd_usb_hw_free(struct snd_pcm_substream *substream) | |
566 | { | |
567 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
5a6c3e11 | 568 | struct snd_usb_audio *chip = subs->stream->chip; |
e5779998 | 569 | |
66354f18 | 570 | snd_media_stop_pipeline(subs); |
6aa719d1 | 571 | mutex_lock(&chip->mutex); |
e5779998 | 572 | subs->cur_audiofmt = NULL; |
6aa719d1 | 573 | mutex_unlock(&chip->mutex); |
5a6c3e11 | 574 | if (!snd_usb_lock_shutdown(chip)) { |
813a17ca | 575 | if (stop_endpoints(subs, false)) |
bf6313a0 TI |
576 | sync_pending_stops(subs); |
577 | close_endpoints(chip, subs); | |
5a6c3e11 | 578 | snd_usb_unlock_shutdown(chip); |
978520b7 | 579 | } |
f274baa4 | 580 | |
6dd9486c | 581 | return 0; |
e5779998 DM |
582 | } |
583 | ||
9c9a3b9d | 584 | /* check whether early start is needed for playback stream */ |
e581f1ce TI |
585 | static int lowlatency_playback_available(struct snd_pcm_runtime *runtime, |
586 | struct snd_usb_substream *subs) | |
9c9a3b9d TI |
587 | { |
588 | struct snd_usb_audio *chip = subs->stream->chip; | |
589 | ||
590 | if (subs->direction == SNDRV_PCM_STREAM_CAPTURE) | |
591 | return false; | |
592 | /* disabled via module option? */ | |
593 | if (!chip->lowlatency) | |
594 | return false; | |
e581f1ce TI |
595 | /* free-wheeling mode? (e.g. dmix) */ |
596 | if (runtime->stop_threshold > runtime->buffer_size) | |
597 | return false; | |
bceee753 TI |
598 | /* implicit feedback mode has own operation mode */ |
599 | if (snd_usb_endpoint_implicit_feedback_sink(subs->data_endpoint)) | |
600 | return false; | |
9c9a3b9d TI |
601 | return true; |
602 | } | |
603 | ||
e5779998 DM |
604 | /* |
605 | * prepare callback | |
606 | * | |
607 | * only a few subtle things... | |
608 | */ | |
609 | static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) | |
610 | { | |
611 | struct snd_pcm_runtime *runtime = substream->runtime; | |
612 | struct snd_usb_substream *subs = runtime->private_data; | |
bf6313a0 | 613 | struct snd_usb_audio *chip = subs->stream->chip; |
61a70950 | 614 | int ret; |
e5779998 | 615 | |
bf6313a0 | 616 | ret = snd_usb_lock_shutdown(chip); |
47ab1545 TI |
617 | if (ret < 0) |
618 | return ret; | |
978520b7 TI |
619 | if (snd_BUG_ON(!subs->data_endpoint)) { |
620 | ret = -EIO; | |
621 | goto unlock; | |
622 | } | |
edcd3633 | 623 | |
bf6313a0 | 624 | ret = configure_endpoints(chip, subs); |
61a70950 | 625 | if (ret < 0) |
978520b7 | 626 | goto unlock; |
61a70950 | 627 | |
e5779998 | 628 | /* reset the pointer */ |
d303c5d3 | 629 | subs->buffer_bytes = frames_to_bytes(runtime, runtime->buffer_size); |
e8a8f09c | 630 | subs->inflight_bytes = 0; |
e5779998 DM |
631 | subs->hwptr_done = 0; |
632 | subs->transfer_done = 0; | |
294c4fb8 | 633 | subs->last_frame_number = 0; |
307cc9ba | 634 | subs->period_elapsed_pending = 0; |
e5779998 DM |
635 | runtime->delay = 0; |
636 | ||
e581f1ce | 637 | subs->lowlatency_playback = lowlatency_playback_available(runtime, subs); |
9c9a3b9d | 638 | if (!subs->lowlatency_playback) |
4267c5a8 TI |
639 | ret = start_endpoints(subs); |
640 | ||
978520b7 | 641 | unlock: |
bf6313a0 | 642 | snd_usb_unlock_shutdown(chip); |
978520b7 | 643 | return ret; |
e5779998 DM |
644 | } |
645 | ||
7ec827b9 TI |
646 | /* |
647 | * h/w constraints | |
648 | */ | |
649 | ||
650 | #ifdef HW_CONST_DEBUG | |
651 | #define hwc_debug(fmt, args...) pr_debug(fmt, ##args) | |
652 | #else | |
653 | #define hwc_debug(fmt, args...) do { } while(0) | |
654 | #endif | |
655 | ||
aaffbf78 | 656 | static const struct snd_pcm_hardware snd_usb_hardware = |
e5779998 DM |
657 | { |
658 | .info = SNDRV_PCM_INFO_MMAP | | |
659 | SNDRV_PCM_INFO_MMAP_VALID | | |
660 | SNDRV_PCM_INFO_BATCH | | |
661 | SNDRV_PCM_INFO_INTERLEAVED | | |
662 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
663 | SNDRV_PCM_INFO_PAUSE, | |
bf6313a0 TI |
664 | .channels_min = 1, |
665 | .channels_max = 256, | |
e5779998 DM |
666 | .buffer_bytes_max = 1024 * 1024, |
667 | .period_bytes_min = 64, | |
668 | .period_bytes_max = 512 * 1024, | |
669 | .periods_min = 2, | |
670 | .periods_max = 1024, | |
671 | }; | |
672 | ||
673 | static int hw_check_valid_format(struct snd_usb_substream *subs, | |
674 | struct snd_pcm_hw_params *params, | |
cab941b7 | 675 | const struct audioformat *fp) |
e5779998 DM |
676 | { |
677 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
678 | struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
679 | struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
680 | struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
015eb0b0 | 681 | struct snd_mask check_fmts; |
e5779998 DM |
682 | unsigned int ptime; |
683 | ||
684 | /* check the format */ | |
015eb0b0 CL |
685 | snd_mask_none(&check_fmts); |
686 | check_fmts.bits[0] = (u32)fp->formats; | |
687 | check_fmts.bits[1] = (u32)(fp->formats >> 32); | |
688 | snd_mask_intersect(&check_fmts, fmts); | |
689 | if (snd_mask_empty(&check_fmts)) { | |
e4ea77f8 | 690 | hwc_debug(" > check: no supported format 0x%llx\n", fp->formats); |
e5779998 DM |
691 | return 0; |
692 | } | |
693 | /* check the channels */ | |
694 | if (fp->channels < ct->min || fp->channels > ct->max) { | |
695 | hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); | |
696 | return 0; | |
697 | } | |
698 | /* check the rate is within the range */ | |
699 | if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { | |
700 | hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); | |
701 | return 0; | |
702 | } | |
703 | if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { | |
704 | hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); | |
705 | return 0; | |
706 | } | |
707 | /* check whether the period time is >= the data packet interval */ | |
978520b7 | 708 | if (subs->speed != USB_SPEED_FULL) { |
e5779998 DM |
709 | ptime = 125 * (1 << fp->datainterval); |
710 | if (ptime > pt->max || (ptime == pt->max && pt->openmax)) { | |
711 | hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max); | |
712 | return 0; | |
713 | } | |
714 | } | |
715 | return 1; | |
716 | } | |
717 | ||
7726dce1 TI |
718 | static int apply_hw_params_minmax(struct snd_interval *it, unsigned int rmin, |
719 | unsigned int rmax) | |
720 | { | |
721 | int changed; | |
722 | ||
723 | if (rmin > rmax) { | |
724 | hwc_debug(" --> get empty\n"); | |
725 | it->empty = 1; | |
726 | return -EINVAL; | |
727 | } | |
728 | ||
729 | changed = 0; | |
730 | if (it->min < rmin) { | |
731 | it->min = rmin; | |
732 | it->openmin = 0; | |
733 | changed = 1; | |
734 | } | |
735 | if (it->max > rmax) { | |
736 | it->max = rmax; | |
737 | it->openmax = 0; | |
738 | changed = 1; | |
739 | } | |
740 | if (snd_interval_checkempty(it)) { | |
741 | it->empty = 1; | |
742 | return -EINVAL; | |
743 | } | |
744 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
745 | return changed; | |
746 | } | |
747 | ||
e5779998 DM |
748 | static int hw_rule_rate(struct snd_pcm_hw_params *params, |
749 | struct snd_pcm_hw_rule *rule) | |
750 | { | |
751 | struct snd_usb_substream *subs = rule->private; | |
4e7cf1fb | 752 | struct snd_usb_audio *chip = subs->stream->chip; |
cab941b7 | 753 | const struct audioformat *fp; |
e5779998 | 754 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
bc4e94aa | 755 | unsigned int rmin, rmax, r; |
bc4e94aa | 756 | int i; |
e5779998 DM |
757 | |
758 | hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); | |
bc4e94aa TI |
759 | rmin = UINT_MAX; |
760 | rmax = 0; | |
88766f04 | 761 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
762 | if (!hw_check_valid_format(subs, params, fp)) |
763 | continue; | |
4e7cf1fb TI |
764 | r = snd_usb_endpoint_get_clock_rate(chip, fp->clock); |
765 | if (r > 0) { | |
766 | if (!snd_interval_test(it, r)) | |
767 | continue; | |
768 | rmin = min(rmin, r); | |
769 | rmax = max(rmax, r); | |
770 | continue; | |
771 | } | |
bc4e94aa TI |
772 | if (fp->rate_table && fp->nr_rates) { |
773 | for (i = 0; i < fp->nr_rates; i++) { | |
774 | r = fp->rate_table[i]; | |
775 | if (!snd_interval_test(it, r)) | |
776 | continue; | |
777 | rmin = min(rmin, r); | |
778 | rmax = max(rmax, r); | |
779 | } | |
e5779998 | 780 | } else { |
bc4e94aa TI |
781 | rmin = min(rmin, fp->rate_min); |
782 | rmax = max(rmax, fp->rate_max); | |
e5779998 DM |
783 | } |
784 | } | |
785 | ||
7726dce1 | 786 | return apply_hw_params_minmax(it, rmin, rmax); |
e5779998 DM |
787 | } |
788 | ||
789 | ||
790 | static int hw_rule_channels(struct snd_pcm_hw_params *params, | |
791 | struct snd_pcm_hw_rule *rule) | |
792 | { | |
793 | struct snd_usb_substream *subs = rule->private; | |
cab941b7 | 794 | const struct audioformat *fp; |
e5779998 DM |
795 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
796 | unsigned int rmin, rmax; | |
e5779998 DM |
797 | |
798 | hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); | |
7726dce1 TI |
799 | rmin = UINT_MAX; |
800 | rmax = 0; | |
88766f04 | 801 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
802 | if (!hw_check_valid_format(subs, params, fp)) |
803 | continue; | |
7726dce1 TI |
804 | rmin = min(rmin, fp->channels); |
805 | rmax = max(rmax, fp->channels); | |
e5779998 DM |
806 | } |
807 | ||
7726dce1 | 808 | return apply_hw_params_minmax(it, rmin, rmax); |
e5779998 DM |
809 | } |
810 | ||
e4ea77f8 | 811 | static int apply_hw_params_format_bits(struct snd_mask *fmt, u64 fbits) |
e5779998 | 812 | { |
e5779998 DM |
813 | u32 oldbits[2]; |
814 | int changed; | |
815 | ||
e5779998 DM |
816 | oldbits[0] = fmt->bits[0]; |
817 | oldbits[1] = fmt->bits[1]; | |
818 | fmt->bits[0] &= (u32)fbits; | |
819 | fmt->bits[1] &= (u32)(fbits >> 32); | |
820 | if (!fmt->bits[0] && !fmt->bits[1]) { | |
821 | hwc_debug(" --> get empty\n"); | |
822 | return -EINVAL; | |
823 | } | |
824 | changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); | |
825 | hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); | |
826 | return changed; | |
827 | } | |
828 | ||
e4ea77f8 TI |
829 | static int hw_rule_format(struct snd_pcm_hw_params *params, |
830 | struct snd_pcm_hw_rule *rule) | |
831 | { | |
832 | struct snd_usb_substream *subs = rule->private; | |
833 | const struct audioformat *fp; | |
834 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
835 | u64 fbits; | |
836 | ||
837 | hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); | |
838 | fbits = 0; | |
839 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
840 | if (!hw_check_valid_format(subs, params, fp)) | |
841 | continue; | |
842 | fbits |= fp->formats; | |
843 | } | |
844 | return apply_hw_params_format_bits(fmt, fbits); | |
845 | } | |
846 | ||
e5779998 DM |
847 | static int hw_rule_period_time(struct snd_pcm_hw_params *params, |
848 | struct snd_pcm_hw_rule *rule) | |
849 | { | |
850 | struct snd_usb_substream *subs = rule->private; | |
cab941b7 | 851 | const struct audioformat *fp; |
e5779998 DM |
852 | struct snd_interval *it; |
853 | unsigned char min_datainterval; | |
854 | unsigned int pmin; | |
e5779998 DM |
855 | |
856 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); | |
857 | hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); | |
858 | min_datainterval = 0xff; | |
859 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
860 | if (!hw_check_valid_format(subs, params, fp)) | |
861 | continue; | |
862 | min_datainterval = min(min_datainterval, fp->datainterval); | |
863 | } | |
864 | if (min_datainterval == 0xff) { | |
a7ce2e0d | 865 | hwc_debug(" --> get empty\n"); |
e5779998 DM |
866 | it->empty = 1; |
867 | return -EINVAL; | |
868 | } | |
869 | pmin = 125 * (1 << min_datainterval); | |
7726dce1 TI |
870 | |
871 | return apply_hw_params_minmax(it, pmin, UINT_MAX); | |
e5779998 DM |
872 | } |
873 | ||
e4ea77f8 TI |
874 | /* get the EP or the sync EP for implicit fb when it's already set up */ |
875 | static const struct snd_usb_endpoint * | |
876 | get_sync_ep_from_substream(struct snd_usb_substream *subs) | |
5a6c3e11 TI |
877 | { |
878 | struct snd_usb_audio *chip = subs->stream->chip; | |
cab941b7 | 879 | const struct audioformat *fp; |
e4ea77f8 | 880 | const struct snd_usb_endpoint *ep; |
5a6c3e11 | 881 | |
5a6c3e11 | 882 | list_for_each_entry(fp, &subs->fmt_list, list) { |
54cb3190 | 883 | ep = snd_usb_get_endpoint(chip, fp->endpoint); |
5f5e6a3e TI |
884 | if (ep && ep->cur_audiofmt) { |
885 | /* if EP is already opened solely for this substream, | |
886 | * we still allow us to change the parameter; otherwise | |
887 | * this substream has to follow the existing parameter | |
888 | */ | |
889 | if (ep->cur_audiofmt != subs->cur_audiofmt || ep->opened > 1) | |
890 | return ep; | |
891 | } | |
5a6c3e11 TI |
892 | if (!fp->implicit_fb) |
893 | continue; | |
894 | /* for the implicit fb, check the sync ep as well */ | |
54cb3190 | 895 | ep = snd_usb_get_endpoint(chip, fp->sync_ep); |
5f5e6a3e | 896 | if (ep && ep->cur_audiofmt) |
e4ea77f8 | 897 | return ep; |
5a6c3e11 | 898 | } |
e4ea77f8 TI |
899 | return NULL; |
900 | } | |
901 | ||
902 | /* additional hw constraints for implicit feedback mode */ | |
903 | static int hw_rule_format_implicit_fb(struct snd_pcm_hw_params *params, | |
904 | struct snd_pcm_hw_rule *rule) | |
905 | { | |
906 | struct snd_usb_substream *subs = rule->private; | |
907 | const struct snd_usb_endpoint *ep; | |
908 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
5a6c3e11 | 909 | |
e4ea77f8 TI |
910 | ep = get_sync_ep_from_substream(subs); |
911 | if (!ep) | |
5a6c3e11 | 912 | return 0; |
5a6c3e11 | 913 | |
e4ea77f8 TI |
914 | hwc_debug("applying %s\n", __func__); |
915 | return apply_hw_params_format_bits(fmt, pcm_format_to_bits(ep->cur_format)); | |
916 | } | |
5a6c3e11 | 917 | |
e4ea77f8 TI |
918 | static int hw_rule_rate_implicit_fb(struct snd_pcm_hw_params *params, |
919 | struct snd_pcm_hw_rule *rule) | |
920 | { | |
921 | struct snd_usb_substream *subs = rule->private; | |
922 | const struct snd_usb_endpoint *ep; | |
923 | struct snd_interval *it; | |
bf6313a0 | 924 | |
e4ea77f8 TI |
925 | ep = get_sync_ep_from_substream(subs); |
926 | if (!ep) | |
927 | return 0; | |
5a6c3e11 | 928 | |
e4ea77f8 TI |
929 | hwc_debug("applying %s\n", __func__); |
930 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
931 | return apply_hw_params_minmax(it, ep->cur_rate, ep->cur_rate); | |
932 | } | |
933 | ||
934 | static int hw_rule_period_size_implicit_fb(struct snd_pcm_hw_params *params, | |
935 | struct snd_pcm_hw_rule *rule) | |
936 | { | |
937 | struct snd_usb_substream *subs = rule->private; | |
938 | const struct snd_usb_endpoint *ep; | |
939 | struct snd_interval *it; | |
5a6c3e11 | 940 | |
e4ea77f8 TI |
941 | ep = get_sync_ep_from_substream(subs); |
942 | if (!ep) | |
943 | return 0; | |
944 | ||
945 | hwc_debug("applying %s\n", __func__); | |
946 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); | |
947 | return apply_hw_params_minmax(it, ep->cur_period_frames, | |
948 | ep->cur_period_frames); | |
949 | } | |
950 | ||
951 | static int hw_rule_periods_implicit_fb(struct snd_pcm_hw_params *params, | |
952 | struct snd_pcm_hw_rule *rule) | |
953 | { | |
954 | struct snd_usb_substream *subs = rule->private; | |
955 | const struct snd_usb_endpoint *ep; | |
956 | struct snd_interval *it; | |
957 | ||
958 | ep = get_sync_ep_from_substream(subs); | |
959 | if (!ep) | |
960 | return 0; | |
961 | ||
962 | hwc_debug("applying %s\n", __func__); | |
963 | it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIODS); | |
964 | return apply_hw_params_minmax(it, ep->cur_buffer_periods, | |
965 | ep->cur_buffer_periods); | |
5a6c3e11 | 966 | } |
e5779998 DM |
967 | |
968 | /* | |
969 | * set up the runtime hardware information. | |
970 | */ | |
971 | ||
972 | static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) | |
973 | { | |
cab941b7 | 974 | const struct audioformat *fp; |
e5779998 | 975 | unsigned int pt, ptmin; |
5a6c3e11 | 976 | int param_period_time_if_needed = -1; |
e5779998 DM |
977 | int err; |
978 | ||
979 | runtime->hw.formats = subs->formats; | |
980 | ||
981 | runtime->hw.rate_min = 0x7fffffff; | |
982 | runtime->hw.rate_max = 0; | |
983 | runtime->hw.channels_min = 256; | |
984 | runtime->hw.channels_max = 0; | |
985 | runtime->hw.rates = 0; | |
986 | ptmin = UINT_MAX; | |
987 | /* check min/max rates and channels */ | |
88766f04 | 988 | list_for_each_entry(fp, &subs->fmt_list, list) { |
e5779998 DM |
989 | runtime->hw.rates |= fp->rates; |
990 | if (runtime->hw.rate_min > fp->rate_min) | |
991 | runtime->hw.rate_min = fp->rate_min; | |
992 | if (runtime->hw.rate_max < fp->rate_max) | |
993 | runtime->hw.rate_max = fp->rate_max; | |
994 | if (runtime->hw.channels_min > fp->channels) | |
995 | runtime->hw.channels_min = fp->channels; | |
996 | if (runtime->hw.channels_max < fp->channels) | |
997 | runtime->hw.channels_max = fp->channels; | |
998 | if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) { | |
999 | /* FIXME: there might be more than one audio formats... */ | |
1000 | runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = | |
1001 | fp->frame_size; | |
1002 | } | |
1003 | pt = 125 * (1 << fp->datainterval); | |
1004 | ptmin = min(ptmin, pt); | |
1005 | } | |
1006 | ||
1007 | param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME; | |
978520b7 | 1008 | if (subs->speed == USB_SPEED_FULL) |
e5779998 DM |
1009 | /* full speed devices have fixed data packet interval */ |
1010 | ptmin = 1000; | |
1011 | if (ptmin == 1000) | |
1012 | /* if period time doesn't go below 1 ms, no rules needed */ | |
1013 | param_period_time_if_needed = -1; | |
e92be814 TI |
1014 | |
1015 | err = snd_pcm_hw_constraint_minmax(runtime, | |
1016 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1017 | ptmin, UINT_MAX); | |
1018 | if (err < 0) | |
1019 | return err; | |
1020 | ||
1021 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1022 | hw_rule_rate, subs, | |
506c203c | 1023 | SNDRV_PCM_HW_PARAM_RATE, |
e92be814 TI |
1024 | SNDRV_PCM_HW_PARAM_FORMAT, |
1025 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1026 | param_period_time_if_needed, | |
1027 | -1); | |
1028 | if (err < 0) | |
1029 | return err; | |
5a6c3e11 | 1030 | |
e92be814 TI |
1031 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, |
1032 | hw_rule_channels, subs, | |
506c203c | 1033 | SNDRV_PCM_HW_PARAM_CHANNELS, |
e92be814 TI |
1034 | SNDRV_PCM_HW_PARAM_FORMAT, |
1035 | SNDRV_PCM_HW_PARAM_RATE, | |
1036 | param_period_time_if_needed, | |
1037 | -1); | |
1038 | if (err < 0) | |
1039 | return err; | |
1040 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1041 | hw_rule_format, subs, | |
506c203c | 1042 | SNDRV_PCM_HW_PARAM_FORMAT, |
e92be814 TI |
1043 | SNDRV_PCM_HW_PARAM_RATE, |
1044 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1045 | param_period_time_if_needed, | |
1046 | -1); | |
1047 | if (err < 0) | |
1048 | return err; | |
e5779998 DM |
1049 | if (param_period_time_if_needed >= 0) { |
1050 | err = snd_pcm_hw_rule_add(runtime, 0, | |
1051 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1052 | hw_rule_period_time, subs, | |
1053 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1054 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1055 | SNDRV_PCM_HW_PARAM_RATE, | |
1056 | -1); | |
1057 | if (err < 0) | |
e92be814 | 1058 | return err; |
e5779998 | 1059 | } |
88a8516a | 1060 | |
e4ea77f8 TI |
1061 | /* additional hw constraints for implicit fb */ |
1062 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1063 | hw_rule_format_implicit_fb, subs, | |
1064 | SNDRV_PCM_HW_PARAM_FORMAT, -1); | |
1065 | if (err < 0) | |
1066 | return err; | |
1067 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1068 | hw_rule_rate_implicit_fb, subs, | |
1069 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1070 | if (err < 0) | |
1071 | return err; | |
1072 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1073 | hw_rule_period_size_implicit_fb, subs, | |
1074 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1075 | if (err < 0) | |
1076 | return err; | |
1077 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1078 | hw_rule_periods_implicit_fb, subs, | |
1079 | SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1080 | if (err < 0) | |
1081 | return err; | |
1082 | ||
59d7f5f6 TI |
1083 | list_for_each_entry(fp, &subs->fmt_list, list) { |
1084 | if (fp->implicit_fb) { | |
1085 | runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; | |
1086 | break; | |
1087 | } | |
1088 | } | |
1089 | ||
1865211d | 1090 | return 0; |
e5779998 DM |
1091 | } |
1092 | ||
6fddc797 | 1093 | static int snd_usb_pcm_open(struct snd_pcm_substream *substream) |
e5779998 | 1094 | { |
6fddc797 | 1095 | int direction = substream->stream; |
e5779998 DM |
1096 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1097 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1098 | struct snd_usb_substream *subs = &as->substream[direction]; | |
66354f18 | 1099 | int ret; |
e5779998 | 1100 | |
e5779998 | 1101 | runtime->hw = snd_usb_hardware; |
d5f871f8 TI |
1102 | /* need an explicit sync to catch applptr update in low-latency mode */ |
1103 | if (direction == SNDRV_PCM_STREAM_PLAYBACK && | |
1104 | as->chip->lowlatency) | |
1105 | runtime->hw.info |= SNDRV_PCM_INFO_EXPLICIT_SYNC; | |
e5779998 DM |
1106 | runtime->private_data = subs; |
1107 | subs->pcm_substream = substream; | |
88a8516a | 1108 | /* runtime PM is also done there */ |
d24f5061 DM |
1109 | |
1110 | /* initialize DSD/DOP context */ | |
1111 | subs->dsd_dop.byte_idx = 0; | |
1112 | subs->dsd_dop.channel = 0; | |
1113 | subs->dsd_dop.marker = 1; | |
1114 | ||
66354f18 | 1115 | ret = setup_hw_info(runtime, subs); |
1865211d TI |
1116 | if (ret < 0) |
1117 | return ret; | |
1118 | ret = snd_usb_autoresume(subs->stream->chip); | |
1119 | if (ret < 0) | |
1120 | return ret; | |
1121 | ret = snd_media_stream_init(subs, as->pcm, direction); | |
1122 | if (ret < 0) | |
1123 | snd_usb_autosuspend(subs->stream->chip); | |
66354f18 | 1124 | return ret; |
e5779998 DM |
1125 | } |
1126 | ||
6fddc797 | 1127 | static int snd_usb_pcm_close(struct snd_pcm_substream *substream) |
e5779998 | 1128 | { |
6fddc797 | 1129 | int direction = substream->stream; |
e5779998 DM |
1130 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1131 | struct snd_usb_substream *subs = &as->substream[direction]; | |
a0a4959e | 1132 | int ret; |
e5779998 | 1133 | |
66354f18 | 1134 | snd_media_stop_pipeline(subs); |
68e67f40 | 1135 | |
bf6313a0 | 1136 | if (!snd_usb_lock_shutdown(subs->stream->chip)) { |
a0a4959e | 1137 | ret = snd_usb_pcm_change_state(subs, UAC3_PD_STATE_D1); |
47ab1545 | 1138 | snd_usb_unlock_shutdown(subs->stream->chip); |
a0a4959e JS |
1139 | if (ret < 0) |
1140 | return ret; | |
68e67f40 DM |
1141 | } |
1142 | ||
e5779998 | 1143 | subs->pcm_substream = NULL; |
88a8516a | 1144 | snd_usb_autosuspend(subs->stream->chip); |
edcd3633 | 1145 | |
68e67f40 | 1146 | return 0; |
edcd3633 DM |
1147 | } |
1148 | ||
1149 | /* Since a URB can handle only a single linear buffer, we must use double | |
1150 | * buffering when the data to be transferred overflows the buffer boundary. | |
1151 | * To avoid inconsistencies when updating hwptr_done, we use double buffering | |
1152 | * for all URBs. | |
1153 | */ | |
1154 | static void retire_capture_urb(struct snd_usb_substream *subs, | |
1155 | struct urb *urb) | |
1156 | { | |
1157 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1158 | unsigned int stride, frames, bytes, oldptr; | |
1159 | int i, period_elapsed = 0; | |
1160 | unsigned long flags; | |
1161 | unsigned char *cp; | |
e4cc6153 PLB |
1162 | int current_frame_number; |
1163 | ||
1164 | /* read frame number here, update pointer in critical section */ | |
1165 | current_frame_number = usb_get_current_frame_number(subs->dev); | |
edcd3633 DM |
1166 | |
1167 | stride = runtime->frame_bits >> 3; | |
1168 | ||
1169 | for (i = 0; i < urb->number_of_packets; i++) { | |
1539d4f8 | 1170 | cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset + subs->pkt_offset_adj; |
edcd3633 | 1171 | if (urb->iso_frame_desc[i].status && printk_ratelimit()) { |
0ba41d91 TI |
1172 | dev_dbg(&subs->dev->dev, "frame %d active: %d\n", |
1173 | i, urb->iso_frame_desc[i].status); | |
edcd3633 DM |
1174 | // continue; |
1175 | } | |
1176 | bytes = urb->iso_frame_desc[i].actual_length; | |
1b7ecc24 HM |
1177 | if (subs->stream_offset_adj > 0) { |
1178 | unsigned int adj = min(subs->stream_offset_adj, bytes); | |
1179 | cp += adj; | |
1180 | bytes -= adj; | |
1181 | subs->stream_offset_adj -= adj; | |
1182 | } | |
edcd3633 DM |
1183 | frames = bytes / stride; |
1184 | if (!subs->txfr_quirk) | |
1185 | bytes = frames * stride; | |
1186 | if (bytes % (runtime->sample_bits >> 3) != 0) { | |
edcd3633 | 1187 | int oldbytes = bytes; |
edcd3633 | 1188 | bytes = frames * stride; |
377a879d | 1189 | dev_warn_ratelimited(&subs->dev->dev, |
0ba41d91 | 1190 | "Corrected urb data len. %d->%d\n", |
edcd3633 DM |
1191 | oldbytes, bytes); |
1192 | } | |
1193 | /* update the current pointer */ | |
1194 | spin_lock_irqsave(&subs->lock, flags); | |
1195 | oldptr = subs->hwptr_done; | |
1196 | subs->hwptr_done += bytes; | |
d303c5d3 TI |
1197 | if (subs->hwptr_done >= subs->buffer_bytes) |
1198 | subs->hwptr_done -= subs->buffer_bytes; | |
edcd3633 DM |
1199 | frames = (bytes + (oldptr % stride)) / stride; |
1200 | subs->transfer_done += frames; | |
1201 | if (subs->transfer_done >= runtime->period_size) { | |
1202 | subs->transfer_done -= runtime->period_size; | |
1203 | period_elapsed = 1; | |
1204 | } | |
e4cc6153 PLB |
1205 | |
1206 | /* realign last_frame_number */ | |
1207 | subs->last_frame_number = current_frame_number; | |
e4cc6153 | 1208 | |
edcd3633 DM |
1209 | spin_unlock_irqrestore(&subs->lock, flags); |
1210 | /* copy a data chunk */ | |
d303c5d3 TI |
1211 | if (oldptr + bytes > subs->buffer_bytes) { |
1212 | unsigned int bytes1 = subs->buffer_bytes - oldptr; | |
1213 | ||
edcd3633 DM |
1214 | memcpy(runtime->dma_area + oldptr, cp, bytes1); |
1215 | memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1); | |
1216 | } else { | |
1217 | memcpy(runtime->dma_area + oldptr, cp, bytes); | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | if (period_elapsed) | |
1222 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1223 | } | |
1224 | ||
e8a8f09c TI |
1225 | static void urb_ctx_queue_advance(struct snd_usb_substream *subs, |
1226 | struct urb *urb, unsigned int bytes) | |
1227 | { | |
1228 | struct snd_urb_ctx *ctx = urb->context; | |
1229 | ||
1230 | ctx->queued += bytes; | |
1231 | subs->inflight_bytes += bytes; | |
1232 | subs->hwptr_done += bytes; | |
1233 | if (subs->hwptr_done >= subs->buffer_bytes) | |
1234 | subs->hwptr_done -= subs->buffer_bytes; | |
1235 | } | |
1236 | ||
d24f5061 DM |
1237 | static inline void fill_playback_urb_dsd_dop(struct snd_usb_substream *subs, |
1238 | struct urb *urb, unsigned int bytes) | |
1239 | { | |
1240 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
d24f5061 DM |
1241 | unsigned int dst_idx = 0; |
1242 | unsigned int src_idx = subs->hwptr_done; | |
d303c5d3 | 1243 | unsigned int wrap = subs->buffer_bytes; |
d24f5061 DM |
1244 | u8 *dst = urb->transfer_buffer; |
1245 | u8 *src = runtime->dma_area; | |
1246 | u8 marker[] = { 0x05, 0xfa }; | |
e8a8f09c | 1247 | unsigned int queued = 0; |
d24f5061 DM |
1248 | |
1249 | /* | |
1250 | * The DSP DOP format defines a way to transport DSD samples over | |
1251 | * normal PCM data endpoints. It requires stuffing of marker bytes | |
1252 | * (0x05 and 0xfa, alternating per sample frame), and then expects | |
1253 | * 2 additional bytes of actual payload. The whole frame is stored | |
1254 | * LSB. | |
1255 | * | |
1256 | * Hence, for a stereo transport, the buffer layout looks like this, | |
1257 | * where L refers to left channel samples and R to right. | |
1258 | * | |
1259 | * L1 L2 0x05 R1 R2 0x05 L3 L4 0xfa R3 R4 0xfa | |
1260 | * L5 L6 0x05 R5 R6 0x05 L7 L8 0xfa R7 R8 0xfa | |
1261 | * ..... | |
1262 | * | |
1263 | */ | |
1264 | ||
1265 | while (bytes--) { | |
1266 | if (++subs->dsd_dop.byte_idx == 3) { | |
1267 | /* frame boundary? */ | |
1268 | dst[dst_idx++] = marker[subs->dsd_dop.marker]; | |
1269 | src_idx += 2; | |
1270 | subs->dsd_dop.byte_idx = 0; | |
1271 | ||
1272 | if (++subs->dsd_dop.channel % runtime->channels == 0) { | |
1273 | /* alternate the marker */ | |
1274 | subs->dsd_dop.marker++; | |
1275 | subs->dsd_dop.marker %= ARRAY_SIZE(marker); | |
1276 | subs->dsd_dop.channel = 0; | |
1277 | } | |
1278 | } else { | |
1279 | /* stuff the DSD payload */ | |
1280 | int idx = (src_idx + subs->dsd_dop.byte_idx - 1) % wrap; | |
44dcbbb1 DM |
1281 | |
1282 | if (subs->cur_audiofmt->dsd_bitrev) | |
1283 | dst[dst_idx++] = bitrev8(src[idx]); | |
1284 | else | |
1285 | dst[dst_idx++] = src[idx]; | |
e8a8f09c | 1286 | queued++; |
d24f5061 DM |
1287 | } |
1288 | } | |
e8a8f09c TI |
1289 | |
1290 | urb_ctx_queue_advance(subs, urb, queued); | |
d24f5061 DM |
1291 | } |
1292 | ||
4f083917 TI |
1293 | /* copy bit-reversed bytes onto transfer buffer */ |
1294 | static void fill_playback_urb_dsd_bitrev(struct snd_usb_substream *subs, | |
1295 | struct urb *urb, unsigned int bytes) | |
1296 | { | |
1297 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1298 | const u8 *src = runtime->dma_area; | |
1299 | u8 *buf = urb->transfer_buffer; | |
1300 | int i, ofs = subs->hwptr_done; | |
1301 | ||
1302 | for (i = 0; i < bytes; i++) { | |
1303 | *buf++ = bitrev8(src[ofs]); | |
1304 | if (++ofs >= subs->buffer_bytes) | |
1305 | ofs = 0; | |
1306 | } | |
1307 | ||
1308 | urb_ctx_queue_advance(subs, urb, bytes); | |
1309 | } | |
1310 | ||
b97a9369 RW |
1311 | static void copy_to_urb(struct snd_usb_substream *subs, struct urb *urb, |
1312 | int offset, int stride, unsigned int bytes) | |
07a40c2f RW |
1313 | { |
1314 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
1315 | ||
d303c5d3 | 1316 | if (subs->hwptr_done + bytes > subs->buffer_bytes) { |
07a40c2f | 1317 | /* err, the transferred area goes over buffer boundary. */ |
d303c5d3 TI |
1318 | unsigned int bytes1 = subs->buffer_bytes - subs->hwptr_done; |
1319 | ||
b97a9369 | 1320 | memcpy(urb->transfer_buffer + offset, |
07a40c2f | 1321 | runtime->dma_area + subs->hwptr_done, bytes1); |
b97a9369 | 1322 | memcpy(urb->transfer_buffer + offset + bytes1, |
07a40c2f RW |
1323 | runtime->dma_area, bytes - bytes1); |
1324 | } else { | |
b97a9369 | 1325 | memcpy(urb->transfer_buffer + offset, |
07a40c2f RW |
1326 | runtime->dma_area + subs->hwptr_done, bytes); |
1327 | } | |
e8a8f09c TI |
1328 | |
1329 | urb_ctx_queue_advance(subs, urb, bytes); | |
07a40c2f RW |
1330 | } |
1331 | ||
e0570446 RW |
1332 | static unsigned int copy_to_urb_quirk(struct snd_usb_substream *subs, |
1333 | struct urb *urb, int stride, | |
1334 | unsigned int bytes) | |
1335 | { | |
1336 | __le32 packet_length; | |
1337 | int i; | |
1338 | ||
1339 | /* Put __le32 length descriptor at start of each packet. */ | |
1340 | for (i = 0; i < urb->number_of_packets; i++) { | |
1341 | unsigned int length = urb->iso_frame_desc[i].length; | |
1342 | unsigned int offset = urb->iso_frame_desc[i].offset; | |
1343 | ||
1344 | packet_length = cpu_to_le32(length); | |
1345 | offset += i * sizeof(packet_length); | |
1346 | urb->iso_frame_desc[i].offset = offset; | |
1347 | urb->iso_frame_desc[i].length += sizeof(packet_length); | |
1348 | memcpy(urb->transfer_buffer + offset, | |
1349 | &packet_length, sizeof(packet_length)); | |
1350 | copy_to_urb(subs, urb, offset + sizeof(packet_length), | |
1351 | stride, length); | |
1352 | } | |
1353 | /* Adjust transfer size accordingly. */ | |
1354 | bytes += urb->number_of_packets * sizeof(packet_length); | |
1355 | return bytes; | |
1356 | } | |
1357 | ||
d5f871f8 TI |
1358 | static int prepare_playback_urb(struct snd_usb_substream *subs, |
1359 | struct urb *urb, | |
1360 | bool in_stream_lock) | |
edcd3633 DM |
1361 | { |
1362 | struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; | |
245baf98 | 1363 | struct snd_usb_endpoint *ep = subs->data_endpoint; |
edcd3633 | 1364 | struct snd_urb_ctx *ctx = urb->context; |
d5f871f8 TI |
1365 | unsigned int frames, bytes; |
1366 | int counts; | |
1367 | unsigned int transfer_done, frame_limit, avail = 0; | |
edcd3633 DM |
1368 | int i, stride, period_elapsed = 0; |
1369 | unsigned long flags; | |
d5f871f8 | 1370 | int err = 0; |
edcd3633 | 1371 | |
d303c5d3 | 1372 | stride = ep->stride; |
edcd3633 DM |
1373 | |
1374 | frames = 0; | |
e8a8f09c | 1375 | ctx->queued = 0; |
edcd3633 | 1376 | urb->number_of_packets = 0; |
d5f871f8 | 1377 | |
edcd3633 | 1378 | spin_lock_irqsave(&subs->lock, flags); |
d5f871f8 TI |
1379 | frame_limit = subs->frame_limit + ep->max_urb_frames; |
1380 | transfer_done = subs->transfer_done; | |
1381 | ||
1382 | if (subs->lowlatency_playback && | |
1383 | runtime->status->state != SNDRV_PCM_STATE_DRAINING) { | |
1384 | unsigned int hwptr = subs->hwptr_done / stride; | |
1385 | ||
1386 | /* calculate the byte offset-in-buffer of the appl_ptr */ | |
1387 | avail = (runtime->control->appl_ptr - runtime->hw_ptr_base) | |
1388 | % runtime->buffer_size; | |
1389 | if (avail <= hwptr) | |
1390 | avail += runtime->buffer_size; | |
1391 | avail -= hwptr; | |
1392 | } | |
1393 | ||
edcd3633 | 1394 | for (i = 0; i < ctx->packets; i++) { |
d5f871f8 TI |
1395 | counts = snd_usb_endpoint_next_packet_size(ep, ctx, i, avail); |
1396 | if (counts < 0) | |
1397 | break; | |
edcd3633 | 1398 | /* set up descriptor */ |
d303c5d3 TI |
1399 | urb->iso_frame_desc[i].offset = frames * stride; |
1400 | urb->iso_frame_desc[i].length = counts * stride; | |
edcd3633 | 1401 | frames += counts; |
d5f871f8 | 1402 | avail -= counts; |
edcd3633 | 1403 | urb->number_of_packets++; |
d5f871f8 TI |
1404 | transfer_done += counts; |
1405 | if (transfer_done >= runtime->period_size) { | |
1406 | transfer_done -= runtime->period_size; | |
1407 | frame_limit = 0; | |
edcd3633 DM |
1408 | period_elapsed = 1; |
1409 | if (subs->fmt_type == UAC_FORMAT_TYPE_II) { | |
d5f871f8 | 1410 | if (transfer_done > 0) { |
edcd3633 DM |
1411 | /* FIXME: fill-max mode is not |
1412 | * supported yet */ | |
d5f871f8 TI |
1413 | frames -= transfer_done; |
1414 | counts -= transfer_done; | |
edcd3633 | 1415 | urb->iso_frame_desc[i].length = |
d303c5d3 | 1416 | counts * stride; |
d5f871f8 | 1417 | transfer_done = 0; |
edcd3633 DM |
1418 | } |
1419 | i++; | |
1420 | if (i < ctx->packets) { | |
1421 | /* add a transfer delimiter */ | |
1422 | urb->iso_frame_desc[i].offset = | |
d303c5d3 | 1423 | frames * stride; |
edcd3633 DM |
1424 | urb->iso_frame_desc[i].length = 0; |
1425 | urb->number_of_packets++; | |
1426 | } | |
1427 | break; | |
1428 | } | |
1429 | } | |
976b6c06 | 1430 | /* finish at the period boundary or after enough frames */ |
d5f871f8 | 1431 | if ((period_elapsed || transfer_done >= frame_limit) && |
976b6c06 | 1432 | !snd_usb_endpoint_implicit_feedback_sink(ep)) |
edcd3633 DM |
1433 | break; |
1434 | } | |
d24f5061 | 1435 | |
d5f871f8 TI |
1436 | if (!frames) { |
1437 | err = -EAGAIN; | |
1438 | goto unlock; | |
1439 | } | |
1440 | ||
1441 | bytes = frames * stride; | |
1442 | subs->transfer_done = transfer_done; | |
1443 | subs->frame_limit = frame_limit; | |
6aa719d1 | 1444 | if (unlikely(ep->cur_format == SNDRV_PCM_FORMAT_DSD_U16_LE && |
d24f5061 DM |
1445 | subs->cur_audiofmt->dsd_dop)) { |
1446 | fill_playback_urb_dsd_dop(subs, urb, bytes); | |
6aa719d1 | 1447 | } else if (unlikely(ep->cur_format == SNDRV_PCM_FORMAT_DSD_U8 && |
44dcbbb1 | 1448 | subs->cur_audiofmt->dsd_bitrev)) { |
4f083917 | 1449 | fill_playback_urb_dsd_bitrev(subs, urb, bytes); |
edcd3633 | 1450 | } else { |
d24f5061 | 1451 | /* usual PCM */ |
e0570446 RW |
1452 | if (!subs->tx_length_quirk) |
1453 | copy_to_urb(subs, urb, 0, stride, bytes); | |
1454 | else | |
1455 | bytes = copy_to_urb_quirk(subs, urb, stride, bytes); | |
1456 | /* bytes is now amount of outgoing data */ | |
edcd3633 | 1457 | } |
d24f5061 | 1458 | |
fbcfbf5f | 1459 | subs->last_frame_number = usb_get_current_frame_number(subs->dev); |
fbcfbf5f | 1460 | |
ea33d359 PLB |
1461 | if (subs->trigger_tstamp_pending_update) { |
1462 | /* this is the first actual URB submitted, | |
1463 | * update trigger timestamp to reflect actual start time | |
1464 | */ | |
1465 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); | |
1466 | subs->trigger_tstamp_pending_update = false; | |
1467 | } | |
1468 | ||
9c9a3b9d | 1469 | if (period_elapsed && !subs->running && subs->lowlatency_playback) { |
307cc9ba TI |
1470 | subs->period_elapsed_pending = 1; |
1471 | period_elapsed = 0; | |
1472 | } | |
d5f871f8 TI |
1473 | |
1474 | unlock: | |
edcd3633 | 1475 | spin_unlock_irqrestore(&subs->lock, flags); |
d5f871f8 TI |
1476 | if (err < 0) |
1477 | return err; | |
edcd3633 | 1478 | urb->transfer_buffer_length = bytes; |
d5f871f8 TI |
1479 | if (period_elapsed) { |
1480 | if (in_stream_lock) | |
1481 | snd_pcm_period_elapsed_under_stream_lock(subs->pcm_substream); | |
1482 | else | |
1483 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1484 | } | |
1485 | return 0; | |
edcd3633 DM |
1486 | } |
1487 | ||
1488 | /* | |
1489 | * process after playback data complete | |
1490 | * - decrease the delay count again | |
1491 | */ | |
1492 | static void retire_playback_urb(struct snd_usb_substream *subs, | |
1493 | struct urb *urb) | |
1494 | { | |
1495 | unsigned long flags; | |
e8a8f09c | 1496 | struct snd_urb_ctx *ctx = urb->context; |
307cc9ba | 1497 | bool period_elapsed = false; |
1213a205 | 1498 | |
edcd3633 | 1499 | spin_lock_irqsave(&subs->lock, flags); |
e8a8f09c TI |
1500 | if (ctx->queued) { |
1501 | if (subs->inflight_bytes >= ctx->queued) | |
1502 | subs->inflight_bytes -= ctx->queued; | |
1503 | else | |
1504 | subs->inflight_bytes = 0; | |
48779a0b TI |
1505 | } |
1506 | ||
e8a8f09c | 1507 | subs->last_frame_number = usb_get_current_frame_number(subs->dev); |
307cc9ba TI |
1508 | if (subs->running) { |
1509 | period_elapsed = subs->period_elapsed_pending; | |
1510 | subs->period_elapsed_pending = 0; | |
1511 | } | |
edcd3633 | 1512 | spin_unlock_irqrestore(&subs->lock, flags); |
307cc9ba TI |
1513 | if (period_elapsed) |
1514 | snd_pcm_period_elapsed(subs->pcm_substream); | |
e5779998 DM |
1515 | } |
1516 | ||
d5f871f8 TI |
1517 | /* PCM ack callback for the playback stream; |
1518 | * this plays a role only when the stream is running in low-latency mode. | |
1519 | */ | |
1520 | static int snd_usb_pcm_playback_ack(struct snd_pcm_substream *substream) | |
1521 | { | |
1522 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1523 | struct snd_usb_endpoint *ep; | |
1524 | ||
1525 | if (!subs->lowlatency_playback || !subs->running) | |
1526 | return 0; | |
1527 | ep = subs->data_endpoint; | |
1528 | if (!ep) | |
1529 | return 0; | |
1530 | /* When no more in-flight URBs available, try to process the pending | |
1531 | * outputs here | |
1532 | */ | |
1533 | if (!ep->active_mask) | |
1534 | snd_usb_queue_pending_output_urbs(ep, true); | |
1535 | return 0; | |
1536 | } | |
1537 | ||
edcd3633 DM |
1538 | static int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, |
1539 | int cmd) | |
1540 | { | |
1541 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
307cc9ba | 1542 | int err; |
edcd3633 DM |
1543 | |
1544 | switch (cmd) { | |
1545 | case SNDRV_PCM_TRIGGER_START: | |
ea33d359 | 1546 | subs->trigger_tstamp_pending_update = true; |
c0dbbdad | 1547 | fallthrough; |
edcd3633 | 1548 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
96e221f3 TI |
1549 | snd_usb_endpoint_set_callback(subs->data_endpoint, |
1550 | prepare_playback_urb, | |
1551 | retire_playback_urb, | |
1552 | subs); | |
9c9a3b9d | 1553 | if (subs->lowlatency_playback && |
4267c5a8 | 1554 | cmd == SNDRV_PCM_TRIGGER_START) { |
307cc9ba TI |
1555 | err = start_endpoints(subs); |
1556 | if (err < 0) { | |
1557 | snd_usb_endpoint_set_callback(subs->data_endpoint, | |
1558 | NULL, NULL, NULL); | |
1559 | return err; | |
1560 | } | |
1561 | } | |
97f8d3b6 | 1562 | subs->running = 1; |
bf6313a0 TI |
1563 | dev_dbg(&subs->dev->dev, "%d:%d Start Playback PCM\n", |
1564 | subs->cur_audiofmt->iface, | |
1565 | subs->cur_audiofmt->altsetting); | |
edcd3633 | 1566 | return 0; |
75c16b51 | 1567 | case SNDRV_PCM_TRIGGER_SUSPEND: |
edcd3633 | 1568 | case SNDRV_PCM_TRIGGER_STOP: |
813a17ca | 1569 | stop_endpoints(subs, substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING); |
96e221f3 TI |
1570 | snd_usb_endpoint_set_callback(subs->data_endpoint, |
1571 | NULL, NULL, NULL); | |
97f8d3b6 | 1572 | subs->running = 0; |
bf6313a0 TI |
1573 | dev_dbg(&subs->dev->dev, "%d:%d Stop Playback PCM\n", |
1574 | subs->cur_audiofmt->iface, | |
1575 | subs->cur_audiofmt->altsetting); | |
edcd3633 DM |
1576 | return 0; |
1577 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
48779a0b | 1578 | /* keep retire_data_urb for delay calculation */ |
96e221f3 TI |
1579 | snd_usb_endpoint_set_callback(subs->data_endpoint, |
1580 | NULL, | |
1581 | retire_playback_urb, | |
1582 | subs); | |
97f8d3b6 | 1583 | subs->running = 0; |
bf6313a0 TI |
1584 | dev_dbg(&subs->dev->dev, "%d:%d Pause Playback PCM\n", |
1585 | subs->cur_audiofmt->iface, | |
1586 | subs->cur_audiofmt->altsetting); | |
edcd3633 DM |
1587 | return 0; |
1588 | } | |
1589 | ||
1590 | return -EINVAL; | |
1591 | } | |
1592 | ||
afe25967 DM |
1593 | static int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, |
1594 | int cmd) | |
edcd3633 DM |
1595 | { |
1596 | int err; | |
1597 | struct snd_usb_substream *subs = substream->runtime->private_data; | |
1598 | ||
1599 | switch (cmd) { | |
1600 | case SNDRV_PCM_TRIGGER_START: | |
1d0f9530 | 1601 | err = start_endpoints(subs); |
edcd3633 DM |
1602 | if (err < 0) |
1603 | return err; | |
96e221f3 TI |
1604 | fallthrough; |
1605 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
1606 | snd_usb_endpoint_set_callback(subs->data_endpoint, | |
1607 | NULL, retire_capture_urb, | |
1608 | subs); | |
e8a8f09c | 1609 | subs->last_frame_number = usb_get_current_frame_number(subs->dev); |
97f8d3b6 | 1610 | subs->running = 1; |
bf6313a0 TI |
1611 | dev_dbg(&subs->dev->dev, "%d:%d Start Capture PCM\n", |
1612 | subs->cur_audiofmt->iface, | |
1613 | subs->cur_audiofmt->altsetting); | |
edcd3633 | 1614 | return 0; |
75c16b51 | 1615 | case SNDRV_PCM_TRIGGER_SUSPEND: |
edcd3633 | 1616 | case SNDRV_PCM_TRIGGER_STOP: |
813a17ca | 1617 | stop_endpoints(subs, false); |
96e221f3 | 1618 | fallthrough; |
edcd3633 | 1619 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
96e221f3 TI |
1620 | snd_usb_endpoint_set_callback(subs->data_endpoint, |
1621 | NULL, NULL, NULL); | |
97f8d3b6 | 1622 | subs->running = 0; |
bf6313a0 TI |
1623 | dev_dbg(&subs->dev->dev, "%d:%d Stop Capture PCM\n", |
1624 | subs->cur_audiofmt->iface, | |
1625 | subs->cur_audiofmt->altsetting); | |
edcd3633 | 1626 | return 0; |
edcd3633 DM |
1627 | } |
1628 | ||
1629 | return -EINVAL; | |
1630 | } | |
1631 | ||
31cb1fb4 | 1632 | static const struct snd_pcm_ops snd_usb_playback_ops = { |
6fddc797 TI |
1633 | .open = snd_usb_pcm_open, |
1634 | .close = snd_usb_pcm_close, | |
e5779998 DM |
1635 | .hw_params = snd_usb_hw_params, |
1636 | .hw_free = snd_usb_hw_free, | |
1637 | .prepare = snd_usb_pcm_prepare, | |
1638 | .trigger = snd_usb_substream_playback_trigger, | |
dc5eafe7 | 1639 | .sync_stop = snd_usb_pcm_sync_stop, |
e5779998 | 1640 | .pointer = snd_usb_pcm_pointer, |
d5f871f8 | 1641 | .ack = snd_usb_pcm_playback_ack, |
e5779998 DM |
1642 | }; |
1643 | ||
31cb1fb4 | 1644 | static const struct snd_pcm_ops snd_usb_capture_ops = { |
6fddc797 TI |
1645 | .open = snd_usb_pcm_open, |
1646 | .close = snd_usb_pcm_close, | |
e5779998 DM |
1647 | .hw_params = snd_usb_hw_params, |
1648 | .hw_free = snd_usb_hw_free, | |
1649 | .prepare = snd_usb_pcm_prepare, | |
1650 | .trigger = snd_usb_substream_capture_trigger, | |
dc5eafe7 | 1651 | .sync_stop = snd_usb_pcm_sync_stop, |
e5779998 | 1652 | .pointer = snd_usb_pcm_pointer, |
f274baa4 TI |
1653 | }; |
1654 | ||
e5779998 DM |
1655 | void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream) |
1656 | { | |
f274baa4 TI |
1657 | const struct snd_pcm_ops *ops; |
1658 | ||
b315997d | 1659 | ops = stream == SNDRV_PCM_STREAM_PLAYBACK ? |
f274baa4 | 1660 | &snd_usb_playback_ops : &snd_usb_capture_ops; |
f274baa4 TI |
1661 | snd_pcm_set_ops(pcm, stream, ops); |
1662 | } | |
1663 | ||
1664 | void snd_usb_preallocate_buffer(struct snd_usb_substream *subs) | |
1665 | { | |
1666 | struct snd_pcm *pcm = subs->stream->pcm; | |
1667 | struct snd_pcm_substream *s = pcm->streams[subs->direction].substream; | |
fb3c293b | 1668 | struct device *dev = subs->dev->bus->sysdev; |
f274baa4 | 1669 | |
b315997d | 1670 | if (snd_usb_use_vmalloc) |
6dd9486c TI |
1671 | snd_pcm_set_managed_buffer(s, SNDRV_DMA_TYPE_VMALLOC, |
1672 | NULL, 0, 0); | |
b315997d | 1673 | else |
6dd9486c TI |
1674 | snd_pcm_set_managed_buffer(s, SNDRV_DMA_TYPE_DEV_SG, |
1675 | dev, 64*1024, 512*1024); | |
e5779998 | 1676 | } |