Commit | Line | Data |
---|---|---|
eb7b3a05 TS |
1 | /* |
2 | * bebob_stream.c - a part of driver for BeBoB based devices | |
3 | * | |
4 | * Copyright (c) 2013-2014 Takashi Sakamoto | |
5 | * | |
6 | * Licensed under the terms of the GNU General Public License, version 2. | |
7 | */ | |
8 | ||
9 | #include "./bebob.h" | |
10 | ||
11 | #define CALLBACK_TIMEOUT 1000 | |
b6bc8123 | 12 | #define FW_ISO_RESOURCE_DELAY 1000 |
eb7b3a05 TS |
13 | |
14 | /* | |
15 | * NOTE; | |
16 | * For BeBoB streams, Both of input and output CMP connection are important. | |
17 | * | |
18 | * For most devices, each CMP connection starts to transmit/receive a | |
19 | * corresponding stream. But for a few devices, both of CMP connection needs | |
20 | * to start transmitting stream. An example is 'M-Audio Firewire 410'. | |
21 | */ | |
22 | ||
23 | /* 128 is an arbitrary length but it seems to be enough */ | |
24 | #define FORMAT_MAXIMUM_LENGTH 128 | |
25 | ||
26 | const unsigned int snd_bebob_rate_table[SND_BEBOB_STRM_FMT_ENTRIES] = { | |
27 | [0] = 32000, | |
28 | [1] = 44100, | |
29 | [2] = 48000, | |
30 | [3] = 88200, | |
31 | [4] = 96000, | |
32 | [5] = 176400, | |
33 | [6] = 192000, | |
34 | }; | |
35 | ||
36 | /* | |
37 | * See: Table 51: Extended Stream Format Info ‘Sampling Frequency’ | |
38 | * in Additional AVC commands (Nov 2003, BridgeCo) | |
39 | */ | |
40 | static const unsigned int bridgeco_freq_table[] = { | |
41 | [0] = 0x02, | |
42 | [1] = 0x03, | |
43 | [2] = 0x04, | |
44 | [3] = 0x0a, | |
45 | [4] = 0x05, | |
46 | [5] = 0x06, | |
47 | [6] = 0x07, | |
48 | }; | |
49 | ||
50 | static unsigned int | |
51 | get_formation_index(unsigned int rate) | |
52 | { | |
53 | unsigned int i; | |
54 | ||
55 | for (i = 0; i < ARRAY_SIZE(snd_bebob_rate_table); i++) { | |
56 | if (snd_bebob_rate_table[i] == rate) | |
57 | return i; | |
58 | } | |
59 | return -EINVAL; | |
60 | } | |
61 | ||
62 | int | |
63 | snd_bebob_stream_get_rate(struct snd_bebob *bebob, unsigned int *curr_rate) | |
64 | { | |
65 | unsigned int tx_rate, rx_rate, trials; | |
66 | int err; | |
67 | ||
68 | trials = 0; | |
69 | do { | |
70 | err = avc_general_get_sig_fmt(bebob->unit, &tx_rate, | |
71 | AVC_GENERAL_PLUG_DIR_OUT, 0); | |
72 | } while (err == -EAGAIN && ++trials < 3); | |
73 | if (err < 0) | |
74 | goto end; | |
75 | ||
76 | trials = 0; | |
77 | do { | |
78 | err = avc_general_get_sig_fmt(bebob->unit, &rx_rate, | |
79 | AVC_GENERAL_PLUG_DIR_IN, 0); | |
80 | } while (err == -EAGAIN && ++trials < 3); | |
81 | if (err < 0) | |
82 | goto end; | |
83 | ||
84 | *curr_rate = rx_rate; | |
85 | if (rx_rate == tx_rate) | |
86 | goto end; | |
87 | ||
88 | /* synchronize receive stream rate to transmit stream rate */ | |
89 | err = avc_general_set_sig_fmt(bebob->unit, rx_rate, | |
90 | AVC_GENERAL_PLUG_DIR_IN, 0); | |
91 | end: | |
92 | return err; | |
93 | } | |
94 | ||
95 | int | |
96 | snd_bebob_stream_set_rate(struct snd_bebob *bebob, unsigned int rate) | |
97 | { | |
98 | int err; | |
99 | ||
100 | err = avc_general_set_sig_fmt(bebob->unit, rate, | |
101 | AVC_GENERAL_PLUG_DIR_OUT, 0); | |
102 | if (err < 0) | |
103 | goto end; | |
104 | ||
105 | err = avc_general_set_sig_fmt(bebob->unit, rate, | |
106 | AVC_GENERAL_PLUG_DIR_IN, 0); | |
107 | if (err < 0) | |
108 | goto end; | |
109 | ||
110 | /* | |
111 | * Some devices need a bit time for transition. | |
112 | * 300msec is got by some experiments. | |
113 | */ | |
114 | msleep(300); | |
115 | end: | |
116 | return err; | |
117 | } | |
118 | ||
119 | int | |
120 | snd_bebob_stream_check_internal_clock(struct snd_bebob *bebob, bool *internal) | |
121 | { | |
1fc9522a | 122 | struct snd_bebob_clock_spec *clk_spec = bebob->spec->clock; |
eb7b3a05 | 123 | u8 addr[AVC_BRIDGECO_ADDR_BYTES], input[7]; |
1fc9522a | 124 | unsigned int id; |
eb7b3a05 TS |
125 | int err = 0; |
126 | ||
127 | *internal = false; | |
128 | ||
1fc9522a TS |
129 | /* 1.The device has its own operation to switch source of clock */ |
130 | if (clk_spec) { | |
131 | err = clk_spec->get(bebob, &id); | |
d1d0b6b6 | 132 | if (err < 0) { |
1fc9522a TS |
133 | dev_err(&bebob->unit->device, |
134 | "fail to get clock source: %d\n", err); | |
d1d0b6b6 CV |
135 | goto end; |
136 | } | |
137 | ||
138 | if (id >= clk_spec->num) { | |
139 | dev_err(&bebob->unit->device, | |
140 | "clock source %d out of range 0..%d\n", | |
141 | id, clk_spec->num - 1); | |
142 | err = -EIO; | |
143 | goto end; | |
144 | } | |
145 | ||
146 | if (strncmp(clk_spec->labels[id], SND_BEBOB_CLOCK_INTERNAL, | |
147 | strlen(SND_BEBOB_CLOCK_INTERNAL)) == 0) | |
1fc9522a | 148 | *internal = true; |
d1d0b6b6 | 149 | |
1fc9522a TS |
150 | goto end; |
151 | } | |
152 | ||
eb7b3a05 | 153 | /* |
1fc9522a | 154 | * 2.The device don't support to switch source of clock then assumed |
eb7b3a05 TS |
155 | * to use internal clock always |
156 | */ | |
157 | if (bebob->sync_input_plug < 0) { | |
158 | *internal = true; | |
159 | goto end; | |
160 | } | |
161 | ||
162 | /* | |
1fc9522a | 163 | * 3.The device supports to switch source of clock by an usual way. |
eb7b3a05 TS |
164 | * Let's check input for 'Music Sub Unit Sync Input' plug. |
165 | */ | |
166 | avc_bridgeco_fill_msu_addr(addr, AVC_BRIDGECO_PLUG_DIR_IN, | |
167 | bebob->sync_input_plug); | |
168 | err = avc_bridgeco_get_plug_input(bebob->unit, addr, input); | |
169 | if (err < 0) { | |
170 | dev_err(&bebob->unit->device, | |
171 | "fail to get an input for MSU in plug %d: %d\n", | |
172 | bebob->sync_input_plug, err); | |
173 | goto end; | |
174 | } | |
175 | ||
176 | /* | |
177 | * If there are no input plugs, all of fields are 0xff. | |
178 | * Here check the first field. This field is used for direction. | |
179 | */ | |
180 | if (input[0] == 0xff) { | |
181 | *internal = true; | |
182 | goto end; | |
183 | } | |
184 | ||
185 | /* | |
186 | * If source of clock is internal CSR, Music Sub Unit Sync Input is | |
187 | * a destination of Music Sub Unit Sync Output. | |
188 | */ | |
189 | *internal = ((input[0] == AVC_BRIDGECO_PLUG_DIR_OUT) && | |
190 | (input[1] == AVC_BRIDGECO_PLUG_MODE_SUBUNIT) && | |
191 | (input[2] == 0x0c) && | |
192 | (input[3] == 0x00)); | |
193 | end: | |
194 | return err; | |
195 | } | |
196 | ||
197 | static unsigned int | |
198 | map_data_channels(struct snd_bebob *bebob, struct amdtp_stream *s) | |
199 | { | |
200 | unsigned int sec, sections, ch, channels; | |
201 | unsigned int pcm, midi, location; | |
202 | unsigned int stm_pos, sec_loc, pos; | |
203 | u8 *buf, addr[AVC_BRIDGECO_ADDR_BYTES], type; | |
204 | enum avc_bridgeco_plug_dir dir; | |
205 | int err; | |
206 | ||
207 | /* | |
208 | * The length of return value of this command cannot be expected. Here | |
209 | * use the maximum length of FCP. | |
210 | */ | |
211 | buf = kzalloc(256, GFP_KERNEL); | |
212 | if (buf == NULL) | |
213 | return -ENOMEM; | |
214 | ||
215 | if (s == &bebob->tx_stream) | |
216 | dir = AVC_BRIDGECO_PLUG_DIR_OUT; | |
217 | else | |
218 | dir = AVC_BRIDGECO_PLUG_DIR_IN; | |
219 | ||
220 | avc_bridgeco_fill_unit_addr(addr, dir, AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
221 | err = avc_bridgeco_get_plug_ch_pos(bebob->unit, addr, buf, 256); | |
222 | if (err < 0) { | |
223 | dev_err(&bebob->unit->device, | |
224 | "fail to get channel position for isoc %s plug 0: %d\n", | |
225 | (dir == AVC_BRIDGECO_PLUG_DIR_IN) ? "in" : "out", | |
226 | err); | |
227 | goto end; | |
228 | } | |
229 | pos = 0; | |
230 | ||
231 | /* positions in I/O buffer */ | |
232 | pcm = 0; | |
233 | midi = 0; | |
234 | ||
235 | /* the number of sections in AMDTP packet */ | |
236 | sections = buf[pos++]; | |
237 | ||
238 | for (sec = 0; sec < sections; sec++) { | |
239 | /* type of this section */ | |
240 | avc_bridgeco_fill_unit_addr(addr, dir, | |
241 | AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
242 | err = avc_bridgeco_get_plug_section_type(bebob->unit, addr, | |
243 | sec, &type); | |
244 | if (err < 0) { | |
245 | dev_err(&bebob->unit->device, | |
246 | "fail to get section type for isoc %s plug 0: %d\n", | |
247 | (dir == AVC_BRIDGECO_PLUG_DIR_IN) ? "in" : | |
248 | "out", | |
249 | err); | |
250 | goto end; | |
251 | } | |
252 | /* NoType */ | |
253 | if (type == 0xff) { | |
254 | err = -ENOSYS; | |
255 | goto end; | |
256 | } | |
257 | ||
258 | /* the number of channels in this section */ | |
259 | channels = buf[pos++]; | |
260 | ||
261 | for (ch = 0; ch < channels; ch++) { | |
262 | /* position of this channel in AMDTP packet */ | |
263 | stm_pos = buf[pos++] - 1; | |
264 | /* location of this channel in this section */ | |
265 | sec_loc = buf[pos++] - 1; | |
266 | ||
9076c22d TS |
267 | /* |
268 | * Basically the number of location is within the | |
269 | * number of channels in this section. But some models | |
270 | * of M-Audio don't follow this. Its location for MIDI | |
271 | * is the position of MIDI channels in AMDTP packet. | |
272 | */ | |
273 | if (sec_loc >= channels) | |
274 | sec_loc = ch; | |
275 | ||
eb7b3a05 TS |
276 | switch (type) { |
277 | /* for MIDI conformant data channel */ | |
278 | case 0x0a: | |
279 | /* AMDTP_MAX_CHANNELS_FOR_MIDI is 1. */ | |
280 | if ((midi > 0) && (stm_pos != midi)) { | |
281 | err = -ENOSYS; | |
282 | goto end; | |
283 | } | |
284 | s->midi_position = stm_pos; | |
285 | midi = stm_pos; | |
286 | break; | |
287 | /* for PCM data channel */ | |
288 | case 0x01: /* Headphone */ | |
289 | case 0x02: /* Microphone */ | |
290 | case 0x03: /* Line */ | |
291 | case 0x04: /* SPDIF */ | |
292 | case 0x05: /* ADAT */ | |
293 | case 0x06: /* TDIF */ | |
294 | case 0x07: /* MADI */ | |
295 | /* for undefined/changeable signal */ | |
296 | case 0x08: /* Analog */ | |
297 | case 0x09: /* Digital */ | |
298 | default: | |
299 | location = pcm + sec_loc; | |
300 | if (location >= AMDTP_MAX_CHANNELS_FOR_PCM) { | |
301 | err = -ENOSYS; | |
302 | goto end; | |
303 | } | |
304 | s->pcm_positions[location] = stm_pos; | |
305 | break; | |
306 | } | |
307 | } | |
308 | ||
309 | if (type != 0x0a) | |
310 | pcm += channels; | |
311 | else | |
312 | midi += channels; | |
313 | } | |
314 | end: | |
315 | kfree(buf); | |
316 | return err; | |
317 | } | |
318 | ||
319 | static int | |
320 | init_both_connections(struct snd_bebob *bebob) | |
321 | { | |
322 | int err; | |
323 | ||
324 | err = cmp_connection_init(&bebob->in_conn, | |
325 | bebob->unit, CMP_INPUT, 0); | |
326 | if (err < 0) | |
327 | goto end; | |
328 | ||
329 | err = cmp_connection_init(&bebob->out_conn, | |
330 | bebob->unit, CMP_OUTPUT, 0); | |
331 | if (err < 0) | |
332 | cmp_connection_destroy(&bebob->in_conn); | |
333 | end: | |
334 | return err; | |
335 | } | |
336 | ||
337 | static int | |
338 | check_connection_used_by_others(struct snd_bebob *bebob, struct amdtp_stream *s) | |
339 | { | |
340 | struct cmp_connection *conn; | |
341 | bool used; | |
342 | int err; | |
343 | ||
344 | if (s == &bebob->tx_stream) | |
345 | conn = &bebob->out_conn; | |
346 | else | |
347 | conn = &bebob->in_conn; | |
348 | ||
349 | err = cmp_connection_check_used(conn, &used); | |
350 | if ((err >= 0) && used && !amdtp_stream_running(s)) { | |
351 | dev_err(&bebob->unit->device, | |
352 | "Connection established by others: %cPCR[%d]\n", | |
353 | (conn->direction == CMP_OUTPUT) ? 'o' : 'i', | |
354 | conn->pcr_index); | |
355 | err = -EBUSY; | |
356 | } | |
357 | ||
358 | return err; | |
359 | } | |
360 | ||
361 | static int | |
362 | make_both_connections(struct snd_bebob *bebob, unsigned int rate) | |
363 | { | |
b6bc8123 TS |
364 | int index, pcm_channels, midi_channels, err = 0; |
365 | ||
366 | if (bebob->connected) | |
367 | goto end; | |
eb7b3a05 TS |
368 | |
369 | /* confirm params for both streams */ | |
370 | index = get_formation_index(rate); | |
371 | pcm_channels = bebob->tx_stream_formations[index].pcm; | |
372 | midi_channels = bebob->tx_stream_formations[index].midi; | |
373 | amdtp_stream_set_parameters(&bebob->tx_stream, | |
374 | rate, pcm_channels, midi_channels * 8); | |
375 | pcm_channels = bebob->rx_stream_formations[index].pcm; | |
376 | midi_channels = bebob->rx_stream_formations[index].midi; | |
377 | amdtp_stream_set_parameters(&bebob->rx_stream, | |
378 | rate, pcm_channels, midi_channels * 8); | |
379 | ||
380 | /* establish connections for both streams */ | |
381 | err = cmp_connection_establish(&bebob->out_conn, | |
382 | amdtp_stream_get_max_payload(&bebob->tx_stream)); | |
383 | if (err < 0) | |
384 | goto end; | |
385 | err = cmp_connection_establish(&bebob->in_conn, | |
386 | amdtp_stream_get_max_payload(&bebob->rx_stream)); | |
b6bc8123 | 387 | if (err < 0) { |
eb7b3a05 | 388 | cmp_connection_break(&bebob->out_conn); |
b6bc8123 TS |
389 | goto end; |
390 | } | |
391 | ||
392 | bebob->connected = true; | |
eb7b3a05 TS |
393 | end: |
394 | return err; | |
395 | } | |
396 | ||
397 | static void | |
398 | break_both_connections(struct snd_bebob *bebob) | |
399 | { | |
400 | cmp_connection_break(&bebob->in_conn); | |
401 | cmp_connection_break(&bebob->out_conn); | |
b6bc8123 TS |
402 | |
403 | bebob->connected = false; | |
3149ac48 TS |
404 | |
405 | /* These models seems to be in transition state for a longer time. */ | |
406 | if (bebob->maudio_special_quirk != NULL) | |
407 | msleep(200); | |
eb7b3a05 TS |
408 | } |
409 | ||
410 | static void | |
411 | destroy_both_connections(struct snd_bebob *bebob) | |
412 | { | |
eb7b3a05 TS |
413 | cmp_connection_destroy(&bebob->in_conn); |
414 | cmp_connection_destroy(&bebob->out_conn); | |
415 | } | |
416 | ||
417 | static int | |
418 | get_sync_mode(struct snd_bebob *bebob, enum cip_flags *sync_mode) | |
419 | { | |
420 | /* currently this module doesn't support SYT-Match mode */ | |
421 | *sync_mode = CIP_SYNC_TO_DEVICE; | |
422 | return 0; | |
423 | } | |
424 | ||
425 | static int | |
426 | start_stream(struct snd_bebob *bebob, struct amdtp_stream *stream, | |
427 | unsigned int rate) | |
428 | { | |
429 | struct cmp_connection *conn; | |
430 | int err = 0; | |
431 | ||
432 | if (stream == &bebob->rx_stream) | |
433 | conn = &bebob->in_conn; | |
434 | else | |
435 | conn = &bebob->out_conn; | |
436 | ||
437 | /* channel mapping */ | |
3149ac48 TS |
438 | if (bebob->maudio_special_quirk == NULL) { |
439 | err = map_data_channels(bebob, stream); | |
440 | if (err < 0) | |
441 | goto end; | |
442 | } | |
eb7b3a05 TS |
443 | |
444 | /* start amdtp stream */ | |
445 | err = amdtp_stream_start(stream, | |
446 | conn->resources.channel, | |
447 | conn->speed); | |
448 | end: | |
449 | return err; | |
450 | } | |
451 | ||
452 | int snd_bebob_stream_init_duplex(struct snd_bebob *bebob) | |
453 | { | |
454 | int err; | |
455 | ||
456 | err = init_both_connections(bebob); | |
457 | if (err < 0) | |
458 | goto end; | |
459 | ||
460 | err = amdtp_stream_init(&bebob->tx_stream, bebob->unit, | |
461 | AMDTP_IN_STREAM, CIP_BLOCKING); | |
462 | if (err < 0) { | |
463 | amdtp_stream_destroy(&bebob->tx_stream); | |
464 | destroy_both_connections(bebob); | |
465 | goto end; | |
466 | } | |
b6bc8123 TS |
467 | /* See comments in next function */ |
468 | init_completion(&bebob->bus_reset); | |
469 | bebob->tx_stream.flags |= CIP_SKIP_INIT_DBC_CHECK; | |
9d59124c TS |
470 | /* |
471 | * At high sampling rate, M-Audio special firmware transmits empty | |
472 | * packet with the value of dbc incremented by 8 but the others are | |
473 | * valid to IEC 61883-1. | |
474 | */ | |
475 | if (bebob->maudio_special_quirk) | |
476 | bebob->tx_stream.flags |= CIP_EMPTY_HAS_WRONG_DBC; | |
eb7b3a05 TS |
477 | |
478 | err = amdtp_stream_init(&bebob->rx_stream, bebob->unit, | |
479 | AMDTP_OUT_STREAM, CIP_BLOCKING); | |
480 | if (err < 0) { | |
481 | amdtp_stream_destroy(&bebob->tx_stream); | |
482 | amdtp_stream_destroy(&bebob->rx_stream); | |
483 | destroy_both_connections(bebob); | |
484 | } | |
485 | end: | |
486 | return err; | |
487 | } | |
488 | ||
4a286d55 | 489 | int snd_bebob_stream_start_duplex(struct snd_bebob *bebob, unsigned int rate) |
eb7b3a05 | 490 | { |
1fc9522a | 491 | struct snd_bebob_rate_spec *rate_spec = bebob->spec->rate; |
eb7b3a05 TS |
492 | struct amdtp_stream *master, *slave; |
493 | atomic_t *slave_substreams; | |
494 | enum cip_flags sync_mode; | |
495 | unsigned int curr_rate; | |
b6bc8123 | 496 | bool updated = false; |
eb7b3a05 TS |
497 | int err = 0; |
498 | ||
b6bc8123 TS |
499 | /* |
500 | * Normal BeBoB firmware has a quirk at bus reset to transmits packets | |
501 | * with discontinuous value in dbc field. | |
502 | * | |
503 | * This 'struct completion' is used to call .update() at first to update | |
504 | * connections/streams. Next following codes handle streaming error. | |
505 | */ | |
506 | if (amdtp_streaming_error(&bebob->tx_stream)) { | |
507 | if (completion_done(&bebob->bus_reset)) | |
508 | reinit_completion(&bebob->bus_reset); | |
509 | ||
510 | updated = (wait_for_completion_interruptible_timeout( | |
511 | &bebob->bus_reset, | |
512 | msecs_to_jiffies(FW_ISO_RESOURCE_DELAY)) > 0); | |
513 | } | |
514 | ||
eb7b3a05 TS |
515 | mutex_lock(&bebob->mutex); |
516 | ||
517 | /* Need no substreams */ | |
518 | if (atomic_read(&bebob->playback_substreams) == 0 && | |
519 | atomic_read(&bebob->capture_substreams) == 0) | |
520 | goto end; | |
521 | ||
522 | err = get_sync_mode(bebob, &sync_mode); | |
523 | if (err < 0) | |
524 | goto end; | |
525 | if (sync_mode == CIP_SYNC_TO_DEVICE) { | |
526 | master = &bebob->tx_stream; | |
527 | slave = &bebob->rx_stream; | |
528 | slave_substreams = &bebob->playback_substreams; | |
529 | } else { | |
530 | master = &bebob->rx_stream; | |
531 | slave = &bebob->tx_stream; | |
532 | slave_substreams = &bebob->capture_substreams; | |
533 | } | |
534 | ||
535 | /* | |
536 | * Considering JACK/FFADO streaming: | |
537 | * TODO: This can be removed hwdep functionality becomes popular. | |
538 | */ | |
539 | err = check_connection_used_by_others(bebob, master); | |
540 | if (err < 0) | |
541 | goto end; | |
542 | ||
b6bc8123 TS |
543 | /* |
544 | * packet queueing error or detecting discontinuity | |
545 | * | |
546 | * At bus reset, connections should not be broken here. So streams need | |
547 | * to be re-started. This is a reason to use SKIP_INIT_DBC_CHECK flag. | |
548 | */ | |
549 | if (amdtp_streaming_error(master)) | |
eb7b3a05 | 550 | amdtp_stream_stop(master); |
eb7b3a05 TS |
551 | if (amdtp_streaming_error(slave)) |
552 | amdtp_stream_stop(slave); | |
b6bc8123 TS |
553 | if (!updated && |
554 | !amdtp_stream_running(master) && !amdtp_stream_running(slave)) | |
555 | break_both_connections(bebob); | |
eb7b3a05 TS |
556 | |
557 | /* stop streams if rate is different */ | |
1fc9522a | 558 | err = rate_spec->get(bebob, &curr_rate); |
eb7b3a05 TS |
559 | if (err < 0) { |
560 | dev_err(&bebob->unit->device, | |
561 | "fail to get sampling rate: %d\n", err); | |
562 | goto end; | |
563 | } | |
564 | if (rate == 0) | |
565 | rate = curr_rate; | |
566 | if (rate != curr_rate) { | |
567 | amdtp_stream_stop(master); | |
568 | amdtp_stream_stop(slave); | |
569 | break_both_connections(bebob); | |
570 | } | |
571 | ||
572 | /* master should be always running */ | |
573 | if (!amdtp_stream_running(master)) { | |
574 | amdtp_stream_set_sync(sync_mode, master, slave); | |
575 | bebob->master = master; | |
576 | ||
577 | /* | |
578 | * NOTE: | |
579 | * If establishing connections at first, Yamaha GO46 | |
580 | * (and maybe Terratec X24) don't generate sound. | |
3149ac48 TS |
581 | * |
582 | * For firmware customized by M-Audio, refer to next NOTE. | |
eb7b3a05 | 583 | */ |
3149ac48 TS |
584 | if (bebob->maudio_special_quirk == NULL) { |
585 | err = rate_spec->set(bebob, rate); | |
586 | if (err < 0) { | |
587 | dev_err(&bebob->unit->device, | |
588 | "fail to set sampling rate: %d\n", | |
589 | err); | |
590 | goto end; | |
591 | } | |
eb7b3a05 TS |
592 | } |
593 | ||
594 | err = make_both_connections(bebob, rate); | |
595 | if (err < 0) | |
596 | goto end; | |
597 | ||
598 | err = start_stream(bebob, master, rate); | |
599 | if (err < 0) { | |
600 | dev_err(&bebob->unit->device, | |
601 | "fail to run AMDTP master stream:%d\n", err); | |
602 | break_both_connections(bebob); | |
603 | goto end; | |
604 | } | |
605 | ||
3149ac48 TS |
606 | /* |
607 | * NOTE: | |
608 | * The firmware customized by M-Audio uses these commands to | |
609 | * start transmitting stream. This is not usual way. | |
610 | */ | |
611 | if (bebob->maudio_special_quirk != NULL) { | |
612 | err = rate_spec->set(bebob, rate); | |
613 | if (err < 0) { | |
614 | dev_err(&bebob->unit->device, | |
615 | "fail to ensure sampling rate: %d\n", | |
616 | err); | |
617 | amdtp_stream_stop(master); | |
618 | break_both_connections(bebob); | |
619 | goto end; | |
620 | } | |
621 | } | |
622 | ||
eb7b3a05 TS |
623 | /* wait first callback */ |
624 | if (!amdtp_stream_wait_callback(master, CALLBACK_TIMEOUT)) { | |
625 | amdtp_stream_stop(master); | |
626 | break_both_connections(bebob); | |
627 | err = -ETIMEDOUT; | |
628 | goto end; | |
629 | } | |
630 | } | |
631 | ||
632 | /* start slave if needed */ | |
633 | if (atomic_read(slave_substreams) > 0 && !amdtp_stream_running(slave)) { | |
634 | err = start_stream(bebob, slave, rate); | |
635 | if (err < 0) { | |
636 | dev_err(&bebob->unit->device, | |
637 | "fail to run AMDTP slave stream:%d\n", err); | |
638 | amdtp_stream_stop(master); | |
639 | break_both_connections(bebob); | |
640 | goto end; | |
641 | } | |
642 | ||
643 | /* wait first callback */ | |
644 | if (!amdtp_stream_wait_callback(slave, CALLBACK_TIMEOUT)) { | |
645 | amdtp_stream_stop(slave); | |
646 | amdtp_stream_stop(master); | |
647 | break_both_connections(bebob); | |
648 | err = -ETIMEDOUT; | |
649 | } | |
650 | } | |
651 | end: | |
652 | mutex_unlock(&bebob->mutex); | |
653 | return err; | |
654 | } | |
655 | ||
656 | void snd_bebob_stream_stop_duplex(struct snd_bebob *bebob) | |
657 | { | |
658 | struct amdtp_stream *master, *slave; | |
659 | atomic_t *master_substreams, *slave_substreams; | |
660 | ||
eb7b3a05 TS |
661 | if (bebob->master == &bebob->rx_stream) { |
662 | slave = &bebob->tx_stream; | |
663 | master = &bebob->rx_stream; | |
664 | slave_substreams = &bebob->capture_substreams; | |
665 | master_substreams = &bebob->playback_substreams; | |
666 | } else { | |
667 | slave = &bebob->rx_stream; | |
668 | master = &bebob->tx_stream; | |
669 | slave_substreams = &bebob->playback_substreams; | |
670 | master_substreams = &bebob->capture_substreams; | |
671 | } | |
672 | ||
c6e5e741 TS |
673 | mutex_lock(&bebob->mutex); |
674 | ||
eb7b3a05 TS |
675 | if (atomic_read(slave_substreams) == 0) { |
676 | amdtp_stream_pcm_abort(slave); | |
677 | amdtp_stream_stop(slave); | |
678 | ||
679 | if (atomic_read(master_substreams) == 0) { | |
680 | amdtp_stream_pcm_abort(master); | |
681 | amdtp_stream_stop(master); | |
682 | break_both_connections(bebob); | |
683 | } | |
684 | } | |
685 | ||
686 | mutex_unlock(&bebob->mutex); | |
687 | } | |
688 | ||
689 | void snd_bebob_stream_update_duplex(struct snd_bebob *bebob) | |
690 | { | |
691 | /* vs. XRUN recovery due to discontinuity at bus reset */ | |
692 | mutex_lock(&bebob->mutex); | |
693 | ||
694 | if ((cmp_connection_update(&bebob->in_conn) < 0) || | |
695 | (cmp_connection_update(&bebob->out_conn) < 0)) { | |
696 | amdtp_stream_pcm_abort(&bebob->rx_stream); | |
697 | amdtp_stream_pcm_abort(&bebob->tx_stream); | |
698 | amdtp_stream_stop(&bebob->rx_stream); | |
699 | amdtp_stream_stop(&bebob->tx_stream); | |
700 | break_both_connections(bebob); | |
701 | } else { | |
702 | amdtp_stream_update(&bebob->rx_stream); | |
703 | amdtp_stream_update(&bebob->tx_stream); | |
704 | } | |
705 | ||
b6bc8123 TS |
706 | /* wake up stream_start_duplex() */ |
707 | if (!completion_done(&bebob->bus_reset)) | |
708 | complete_all(&bebob->bus_reset); | |
709 | ||
eb7b3a05 TS |
710 | mutex_unlock(&bebob->mutex); |
711 | } | |
712 | ||
d23c2cc4 TS |
713 | /* |
714 | * This function should be called before starting streams or after stopping | |
715 | * streams. | |
716 | */ | |
eb7b3a05 TS |
717 | void snd_bebob_stream_destroy_duplex(struct snd_bebob *bebob) |
718 | { | |
eb7b3a05 TS |
719 | amdtp_stream_destroy(&bebob->rx_stream); |
720 | amdtp_stream_destroy(&bebob->tx_stream); | |
721 | ||
722 | destroy_both_connections(bebob); | |
eb7b3a05 TS |
723 | } |
724 | ||
725 | /* | |
726 | * See: Table 50: Extended Stream Format Info Format Hierarchy Level 2’ | |
727 | * in Additional AVC commands (Nov 2003, BridgeCo) | |
728 | * Also 'Clause 12 AM824 sequence adaption layers' in IEC 61883-6:2005 | |
729 | */ | |
730 | static int | |
731 | parse_stream_formation(u8 *buf, unsigned int len, | |
732 | struct snd_bebob_stream_formation *formation) | |
733 | { | |
734 | unsigned int i, e, channels, format; | |
735 | ||
736 | /* | |
737 | * this module can support a hierarchy combination that: | |
738 | * Root: Audio and Music (0x90) | |
739 | * Level 1: AM824 Compound (0x40) | |
740 | */ | |
741 | if ((buf[0] != 0x90) || (buf[1] != 0x40)) | |
742 | return -ENOSYS; | |
743 | ||
744 | /* check sampling rate */ | |
745 | for (i = 0; i < ARRAY_SIZE(bridgeco_freq_table); i++) { | |
746 | if (buf[2] == bridgeco_freq_table[i]) | |
747 | break; | |
748 | } | |
33a5f989 | 749 | if (i == ARRAY_SIZE(bridgeco_freq_table)) |
eb7b3a05 TS |
750 | return -ENOSYS; |
751 | ||
752 | /* Avoid double count by different entries for the same rate. */ | |
753 | memset(&formation[i], 0, sizeof(struct snd_bebob_stream_formation)); | |
754 | ||
755 | for (e = 0; e < buf[4]; e++) { | |
756 | channels = buf[5 + e * 2]; | |
757 | format = buf[6 + e * 2]; | |
758 | ||
759 | switch (format) { | |
51fa31d4 | 760 | /* IEC 60958 Conformant, currently handled as MBLA */ |
eb7b3a05 TS |
761 | case 0x00: |
762 | /* Multi bit linear audio */ | |
763 | case 0x06: /* Raw */ | |
764 | formation[i].pcm += channels; | |
765 | break; | |
766 | /* MIDI Conformant */ | |
767 | case 0x0d: | |
768 | formation[i].midi += channels; | |
769 | break; | |
770 | /* IEC 61937-3 to 7 */ | |
771 | case 0x01: | |
772 | case 0x02: | |
773 | case 0x03: | |
774 | case 0x04: | |
775 | case 0x05: | |
776 | /* Multi bit linear audio */ | |
777 | case 0x07: /* DVD-Audio */ | |
778 | case 0x0c: /* High Precision */ | |
779 | /* One Bit Audio */ | |
780 | case 0x08: /* (Plain) Raw */ | |
781 | case 0x09: /* (Plain) SACD */ | |
782 | case 0x0a: /* (Encoded) Raw */ | |
783 | case 0x0b: /* (Encoded) SACD */ | |
784 | /* Synchronization Stream (Stereo Raw audio) */ | |
785 | case 0x40: | |
786 | /* Don't care */ | |
787 | case 0xff: | |
788 | default: | |
789 | return -ENOSYS; /* not supported */ | |
790 | } | |
791 | } | |
792 | ||
793 | if (formation[i].pcm > AMDTP_MAX_CHANNELS_FOR_PCM || | |
794 | formation[i].midi > AMDTP_MAX_CHANNELS_FOR_MIDI) | |
795 | return -ENOSYS; | |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
800 | static int | |
801 | fill_stream_formations(struct snd_bebob *bebob, enum avc_bridgeco_plug_dir dir, | |
802 | unsigned short pid) | |
803 | { | |
804 | u8 *buf; | |
805 | struct snd_bebob_stream_formation *formations; | |
806 | unsigned int len, eid; | |
807 | u8 addr[AVC_BRIDGECO_ADDR_BYTES]; | |
808 | int err; | |
809 | ||
810 | buf = kmalloc(FORMAT_MAXIMUM_LENGTH, GFP_KERNEL); | |
811 | if (buf == NULL) | |
812 | return -ENOMEM; | |
813 | ||
814 | if (dir == AVC_BRIDGECO_PLUG_DIR_IN) | |
815 | formations = bebob->rx_stream_formations; | |
816 | else | |
817 | formations = bebob->tx_stream_formations; | |
818 | ||
819 | for (eid = 0; eid < SND_BEBOB_STRM_FMT_ENTRIES; eid++) { | |
820 | len = FORMAT_MAXIMUM_LENGTH; | |
821 | avc_bridgeco_fill_unit_addr(addr, dir, | |
822 | AVC_BRIDGECO_PLUG_UNIT_ISOC, pid); | |
823 | err = avc_bridgeco_get_plug_strm_fmt(bebob->unit, addr, buf, | |
824 | &len, eid); | |
825 | /* No entries remained. */ | |
826 | if (err == -EINVAL && eid > 0) { | |
827 | err = 0; | |
828 | break; | |
829 | } else if (err < 0) { | |
830 | dev_err(&bebob->unit->device, | |
831 | "fail to get stream format %d for isoc %s plug %d:%d\n", | |
832 | eid, | |
833 | (dir == AVC_BRIDGECO_PLUG_DIR_IN) ? "in" : | |
834 | "out", | |
835 | pid, err); | |
836 | break; | |
837 | } | |
838 | ||
839 | err = parse_stream_formation(buf, len, formations); | |
840 | if (err < 0) | |
841 | break; | |
842 | } | |
843 | ||
844 | kfree(buf); | |
845 | return err; | |
846 | } | |
847 | ||
848 | static int | |
849 | seek_msu_sync_input_plug(struct snd_bebob *bebob) | |
850 | { | |
851 | u8 plugs[AVC_PLUG_INFO_BUF_BYTES], addr[AVC_BRIDGECO_ADDR_BYTES]; | |
a6b598bf TS |
852 | unsigned int i; |
853 | enum avc_bridgeco_plug_type type; | |
eb7b3a05 TS |
854 | int err; |
855 | ||
856 | /* Get the number of Music Sub Unit for both direction. */ | |
857 | err = avc_general_get_plug_info(bebob->unit, 0x0c, 0x00, 0x00, plugs); | |
858 | if (err < 0) { | |
859 | dev_err(&bebob->unit->device, | |
860 | "fail to get info for MSU in/out plugs: %d\n", | |
861 | err); | |
862 | goto end; | |
863 | } | |
864 | ||
865 | /* seek destination plugs for 'MSU sync input' */ | |
866 | bebob->sync_input_plug = -1; | |
867 | for (i = 0; i < plugs[0]; i++) { | |
868 | avc_bridgeco_fill_msu_addr(addr, AVC_BRIDGECO_PLUG_DIR_IN, i); | |
869 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &type); | |
870 | if (err < 0) { | |
871 | dev_err(&bebob->unit->device, | |
872 | "fail to get type for MSU in plug %d: %d\n", | |
873 | i, err); | |
874 | goto end; | |
875 | } | |
876 | ||
877 | if (type == AVC_BRIDGECO_PLUG_TYPE_SYNC) { | |
878 | bebob->sync_input_plug = i; | |
879 | break; | |
880 | } | |
881 | } | |
882 | end: | |
883 | return err; | |
884 | } | |
885 | ||
886 | int snd_bebob_stream_discover(struct snd_bebob *bebob) | |
887 | { | |
1fc9522a | 888 | struct snd_bebob_clock_spec *clk_spec = bebob->spec->clock; |
eb7b3a05 TS |
889 | u8 plugs[AVC_PLUG_INFO_BUF_BYTES], addr[AVC_BRIDGECO_ADDR_BYTES]; |
890 | enum avc_bridgeco_plug_type type; | |
891 | unsigned int i; | |
892 | int err; | |
893 | ||
894 | /* the number of plugs for isoc in/out, ext in/out */ | |
895 | err = avc_general_get_plug_info(bebob->unit, 0x1f, 0x07, 0x00, plugs); | |
896 | if (err < 0) { | |
897 | dev_err(&bebob->unit->device, | |
898 | "fail to get info for isoc/external in/out plugs: %d\n", | |
899 | err); | |
900 | goto end; | |
901 | } | |
902 | ||
903 | /* | |
904 | * This module supports at least one isoc input plug and one isoc | |
905 | * output plug. | |
906 | */ | |
907 | if ((plugs[0] == 0) || (plugs[1] == 0)) { | |
908 | err = -ENOSYS; | |
909 | goto end; | |
910 | } | |
911 | ||
912 | avc_bridgeco_fill_unit_addr(addr, AVC_BRIDGECO_PLUG_DIR_IN, | |
913 | AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
914 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &type); | |
915 | if (err < 0) { | |
916 | dev_err(&bebob->unit->device, | |
917 | "fail to get type for isoc in plug 0: %d\n", err); | |
918 | goto end; | |
919 | } else if (type != AVC_BRIDGECO_PLUG_TYPE_ISOC) { | |
920 | err = -ENOSYS; | |
921 | goto end; | |
922 | } | |
923 | err = fill_stream_formations(bebob, AVC_BRIDGECO_PLUG_DIR_IN, 0); | |
924 | if (err < 0) | |
925 | goto end; | |
926 | ||
927 | avc_bridgeco_fill_unit_addr(addr, AVC_BRIDGECO_PLUG_DIR_OUT, | |
928 | AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
929 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &type); | |
930 | if (err < 0) { | |
931 | dev_err(&bebob->unit->device, | |
932 | "fail to get type for isoc out plug 0: %d\n", err); | |
933 | goto end; | |
934 | } else if (type != AVC_BRIDGECO_PLUG_TYPE_ISOC) { | |
935 | err = -ENOSYS; | |
936 | goto end; | |
937 | } | |
938 | err = fill_stream_formations(bebob, AVC_BRIDGECO_PLUG_DIR_OUT, 0); | |
939 | if (err < 0) | |
940 | goto end; | |
941 | ||
942 | /* count external input plugs for MIDI */ | |
943 | bebob->midi_input_ports = 0; | |
944 | for (i = 0; i < plugs[2]; i++) { | |
945 | avc_bridgeco_fill_unit_addr(addr, AVC_BRIDGECO_PLUG_DIR_IN, | |
946 | AVC_BRIDGECO_PLUG_UNIT_EXT, i); | |
947 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &type); | |
948 | if (err < 0) { | |
949 | dev_err(&bebob->unit->device, | |
950 | "fail to get type for external in plug %d: %d\n", | |
951 | i, err); | |
952 | goto end; | |
953 | } else if (type == AVC_BRIDGECO_PLUG_TYPE_MIDI) { | |
954 | bebob->midi_input_ports++; | |
955 | } | |
956 | } | |
957 | ||
958 | /* count external output plugs for MIDI */ | |
959 | bebob->midi_output_ports = 0; | |
960 | for (i = 0; i < plugs[3]; i++) { | |
961 | avc_bridgeco_fill_unit_addr(addr, AVC_BRIDGECO_PLUG_DIR_OUT, | |
962 | AVC_BRIDGECO_PLUG_UNIT_EXT, i); | |
963 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &type); | |
964 | if (err < 0) { | |
965 | dev_err(&bebob->unit->device, | |
966 | "fail to get type for external out plug %d: %d\n", | |
967 | i, err); | |
968 | goto end; | |
969 | } else if (type == AVC_BRIDGECO_PLUG_TYPE_MIDI) { | |
970 | bebob->midi_output_ports++; | |
971 | } | |
972 | } | |
973 | ||
974 | /* for check source of clock later */ | |
1fc9522a TS |
975 | if (!clk_spec) |
976 | err = seek_msu_sync_input_plug(bebob); | |
eb7b3a05 TS |
977 | end: |
978 | return err; | |
979 | } | |
618eabea TS |
980 | |
981 | void snd_bebob_stream_lock_changed(struct snd_bebob *bebob) | |
982 | { | |
983 | bebob->dev_lock_changed = true; | |
984 | wake_up(&bebob->hwdep_wait); | |
985 | } | |
986 | ||
987 | int snd_bebob_stream_lock_try(struct snd_bebob *bebob) | |
988 | { | |
989 | int err; | |
990 | ||
991 | spin_lock_irq(&bebob->lock); | |
992 | ||
993 | /* user land lock this */ | |
994 | if (bebob->dev_lock_count < 0) { | |
995 | err = -EBUSY; | |
996 | goto end; | |
997 | } | |
998 | ||
999 | /* this is the first time */ | |
1000 | if (bebob->dev_lock_count++ == 0) | |
1001 | snd_bebob_stream_lock_changed(bebob); | |
1002 | err = 0; | |
1003 | end: | |
1004 | spin_unlock_irq(&bebob->lock); | |
1005 | return err; | |
1006 | } | |
1007 | ||
1008 | void snd_bebob_stream_lock_release(struct snd_bebob *bebob) | |
1009 | { | |
1010 | spin_lock_irq(&bebob->lock); | |
1011 | ||
1012 | if (WARN_ON(bebob->dev_lock_count <= 0)) | |
1013 | goto end; | |
1014 | if (--bebob->dev_lock_count == 0) | |
1015 | snd_bebob_stream_lock_changed(bebob); | |
1016 | end: | |
1017 | spin_unlock_irq(&bebob->lock); | |
1018 | } |