Commit | Line | Data |
---|---|---|
da607e19 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
eb7b3a05 TS |
2 | /* |
3 | * bebob_stream.c - a part of driver for BeBoB based devices | |
4 | * | |
5 | * Copyright (c) 2013-2014 Takashi Sakamoto | |
eb7b3a05 TS |
6 | */ |
7 | ||
8 | #include "./bebob.h" | |
9 | ||
9a73195e | 10 | #define CALLBACK_TIMEOUT 2000 |
b6bc8123 | 11 | #define FW_ISO_RESOURCE_DELAY 1000 |
eb7b3a05 TS |
12 | |
13 | /* | |
14 | * NOTE; | |
15 | * For BeBoB streams, Both of input and output CMP connection are important. | |
16 | * | |
17 | * For most devices, each CMP connection starts to transmit/receive a | |
18 | * corresponding stream. But for a few devices, both of CMP connection needs | |
19 | * to start transmitting stream. An example is 'M-Audio Firewire 410'. | |
20 | */ | |
21 | ||
22 | /* 128 is an arbitrary length but it seems to be enough */ | |
23 | #define FORMAT_MAXIMUM_LENGTH 128 | |
24 | ||
25 | const unsigned int snd_bebob_rate_table[SND_BEBOB_STRM_FMT_ENTRIES] = { | |
26 | [0] = 32000, | |
27 | [1] = 44100, | |
28 | [2] = 48000, | |
29 | [3] = 88200, | |
30 | [4] = 96000, | |
31 | [5] = 176400, | |
32 | [6] = 192000, | |
33 | }; | |
34 | ||
35 | /* | |
36 | * See: Table 51: Extended Stream Format Info ‘Sampling Frequency’ | |
37 | * in Additional AVC commands (Nov 2003, BridgeCo) | |
38 | */ | |
39 | static const unsigned int bridgeco_freq_table[] = { | |
40 | [0] = 0x02, | |
41 | [1] = 0x03, | |
42 | [2] = 0x04, | |
43 | [3] = 0x0a, | |
44 | [4] = 0x05, | |
45 | [5] = 0x06, | |
46 | [6] = 0x07, | |
47 | }; | |
48 | ||
07905298 LT |
49 | static int |
50 | get_formation_index(unsigned int rate, unsigned int *index) | |
eb7b3a05 TS |
51 | { |
52 | unsigned int i; | |
53 | ||
54 | for (i = 0; i < ARRAY_SIZE(snd_bebob_rate_table); i++) { | |
07905298 LT |
55 | if (snd_bebob_rate_table[i] == rate) { |
56 | *index = i; | |
57 | return 0; | |
58 | } | |
eb7b3a05 TS |
59 | } |
60 | return -EINVAL; | |
61 | } | |
62 | ||
63 | int | |
64 | snd_bebob_stream_get_rate(struct snd_bebob *bebob, unsigned int *curr_rate) | |
65 | { | |
66 | unsigned int tx_rate, rx_rate, trials; | |
67 | int err; | |
68 | ||
69 | trials = 0; | |
70 | do { | |
71 | err = avc_general_get_sig_fmt(bebob->unit, &tx_rate, | |
72 | AVC_GENERAL_PLUG_DIR_OUT, 0); | |
73 | } while (err == -EAGAIN && ++trials < 3); | |
74 | if (err < 0) | |
75 | goto end; | |
76 | ||
77 | trials = 0; | |
78 | do { | |
79 | err = avc_general_get_sig_fmt(bebob->unit, &rx_rate, | |
80 | AVC_GENERAL_PLUG_DIR_IN, 0); | |
81 | } while (err == -EAGAIN && ++trials < 3); | |
82 | if (err < 0) | |
83 | goto end; | |
84 | ||
85 | *curr_rate = rx_rate; | |
86 | if (rx_rate == tx_rate) | |
87 | goto end; | |
88 | ||
89 | /* synchronize receive stream rate to transmit stream rate */ | |
90 | err = avc_general_set_sig_fmt(bebob->unit, rx_rate, | |
91 | AVC_GENERAL_PLUG_DIR_IN, 0); | |
92 | end: | |
93 | return err; | |
94 | } | |
95 | ||
96 | int | |
97 | snd_bebob_stream_set_rate(struct snd_bebob *bebob, unsigned int rate) | |
98 | { | |
99 | int err; | |
100 | ||
101 | err = avc_general_set_sig_fmt(bebob->unit, rate, | |
102 | AVC_GENERAL_PLUG_DIR_OUT, 0); | |
103 | if (err < 0) | |
104 | goto end; | |
105 | ||
106 | err = avc_general_set_sig_fmt(bebob->unit, rate, | |
107 | AVC_GENERAL_PLUG_DIR_IN, 0); | |
108 | if (err < 0) | |
109 | goto end; | |
110 | ||
111 | /* | |
112 | * Some devices need a bit time for transition. | |
113 | * 300msec is got by some experiments. | |
114 | */ | |
115 | msleep(300); | |
116 | end: | |
117 | return err; | |
118 | } | |
119 | ||
3e254b16 TS |
120 | int snd_bebob_stream_get_clock_src(struct snd_bebob *bebob, |
121 | enum snd_bebob_clock_type *src) | |
eb7b3a05 | 122 | { |
6b9866c8 | 123 | const struct snd_bebob_clock_spec *clk_spec = bebob->spec->clock; |
eb7b3a05 | 124 | u8 addr[AVC_BRIDGECO_ADDR_BYTES], input[7]; |
1fc9522a | 125 | unsigned int id; |
5a668812 | 126 | enum avc_bridgeco_plug_type type; |
eb7b3a05 TS |
127 | int err = 0; |
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 | ||
3e254b16 | 146 | *src = clk_spec->types[id]; |
1fc9522a TS |
147 | goto end; |
148 | } | |
149 | ||
eb7b3a05 | 150 | /* |
1fc9522a | 151 | * 2.The device don't support to switch source of clock then assumed |
eb7b3a05 TS |
152 | * to use internal clock always |
153 | */ | |
154 | if (bebob->sync_input_plug < 0) { | |
3e254b16 | 155 | *src = SND_BEBOB_CLOCK_TYPE_INTERNAL; |
eb7b3a05 TS |
156 | goto end; |
157 | } | |
158 | ||
159 | /* | |
1fc9522a | 160 | * 3.The device supports to switch source of clock by an usual way. |
eb7b3a05 TS |
161 | * Let's check input for 'Music Sub Unit Sync Input' plug. |
162 | */ | |
163 | avc_bridgeco_fill_msu_addr(addr, AVC_BRIDGECO_PLUG_DIR_IN, | |
164 | bebob->sync_input_plug); | |
165 | err = avc_bridgeco_get_plug_input(bebob->unit, addr, input); | |
166 | if (err < 0) { | |
167 | dev_err(&bebob->unit->device, | |
168 | "fail to get an input for MSU in plug %d: %d\n", | |
169 | bebob->sync_input_plug, err); | |
170 | goto end; | |
171 | } | |
172 | ||
173 | /* | |
174 | * If there are no input plugs, all of fields are 0xff. | |
175 | * Here check the first field. This field is used for direction. | |
176 | */ | |
177 | if (input[0] == 0xff) { | |
3e254b16 | 178 | *src = SND_BEBOB_CLOCK_TYPE_INTERNAL; |
eb7b3a05 TS |
179 | goto end; |
180 | } | |
181 | ||
5a668812 TS |
182 | /* The source from any output plugs is for one purpose only. */ |
183 | if (input[0] == AVC_BRIDGECO_PLUG_DIR_OUT) { | |
184 | /* | |
185 | * In BeBoB architecture, the source from music subunit may | |
186 | * bypass from oPCR[0]. This means that this source gives | |
187 | * synchronization to IEEE 1394 cycle start packet. | |
188 | */ | |
189 | if (input[1] == AVC_BRIDGECO_PLUG_MODE_SUBUNIT && | |
190 | input[2] == 0x0c) { | |
3e254b16 | 191 | *src = SND_BEBOB_CLOCK_TYPE_INTERNAL; |
5a668812 TS |
192 | goto end; |
193 | } | |
194 | /* The source from any input units is for several purposes. */ | |
195 | } else if (input[1] == AVC_BRIDGECO_PLUG_MODE_UNIT) { | |
196 | if (input[2] == AVC_BRIDGECO_PLUG_UNIT_ISOC) { | |
197 | if (input[3] == 0x00) { | |
198 | /* | |
199 | * This source comes from iPCR[0]. This means | |
200 | * that presentation timestamp calculated by | |
201 | * SYT series of the received packets. In | |
202 | * short, this driver is the master of | |
203 | * synchronization. | |
204 | */ | |
3e254b16 | 205 | *src = SND_BEBOB_CLOCK_TYPE_SYT; |
5a668812 TS |
206 | goto end; |
207 | } else { | |
208 | /* | |
209 | * This source comes from iPCR[1-29]. This | |
210 | * means that the synchronization stream is not | |
211 | * the Audio/MIDI compound stream. | |
212 | */ | |
3e254b16 | 213 | *src = SND_BEBOB_CLOCK_TYPE_EXTERNAL; |
5a668812 TS |
214 | goto end; |
215 | } | |
216 | } else if (input[2] == AVC_BRIDGECO_PLUG_UNIT_EXT) { | |
217 | /* Check type of this plug. */ | |
218 | avc_bridgeco_fill_unit_addr(addr, | |
219 | AVC_BRIDGECO_PLUG_DIR_IN, | |
220 | AVC_BRIDGECO_PLUG_UNIT_EXT, | |
221 | input[3]); | |
222 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, | |
223 | &type); | |
224 | if (err < 0) | |
225 | goto end; | |
226 | ||
227 | if (type == AVC_BRIDGECO_PLUG_TYPE_DIG) { | |
228 | /* | |
229 | * SPDIF/ADAT or sometimes (not always) word | |
230 | * clock. | |
231 | */ | |
3e254b16 | 232 | *src = SND_BEBOB_CLOCK_TYPE_EXTERNAL; |
5a668812 TS |
233 | goto end; |
234 | } else if (type == AVC_BRIDGECO_PLUG_TYPE_SYNC) { | |
235 | /* Often word clock. */ | |
3e254b16 | 236 | *src = SND_BEBOB_CLOCK_TYPE_EXTERNAL; |
5a668812 TS |
237 | goto end; |
238 | } else if (type == AVC_BRIDGECO_PLUG_TYPE_ADDITION) { | |
239 | /* | |
240 | * Not standard. | |
241 | * Mostly, additional internal clock. | |
242 | */ | |
3e254b16 | 243 | *src = SND_BEBOB_CLOCK_TYPE_INTERNAL; |
5a668812 TS |
244 | goto end; |
245 | } | |
246 | } | |
247 | } | |
248 | ||
249 | /* Not supported. */ | |
250 | err = -EIO; | |
eb7b3a05 TS |
251 | end: |
252 | return err; | |
253 | } | |
254 | ||
255 | static unsigned int | |
256 | map_data_channels(struct snd_bebob *bebob, struct amdtp_stream *s) | |
257 | { | |
258 | unsigned int sec, sections, ch, channels; | |
259 | unsigned int pcm, midi, location; | |
260 | unsigned int stm_pos, sec_loc, pos; | |
261 | u8 *buf, addr[AVC_BRIDGECO_ADDR_BYTES], type; | |
262 | enum avc_bridgeco_plug_dir dir; | |
263 | int err; | |
264 | ||
265 | /* | |
266 | * The length of return value of this command cannot be expected. Here | |
267 | * use the maximum length of FCP. | |
268 | */ | |
269 | buf = kzalloc(256, GFP_KERNEL); | |
270 | if (buf == NULL) | |
271 | return -ENOMEM; | |
272 | ||
273 | if (s == &bebob->tx_stream) | |
274 | dir = AVC_BRIDGECO_PLUG_DIR_OUT; | |
275 | else | |
276 | dir = AVC_BRIDGECO_PLUG_DIR_IN; | |
277 | ||
278 | avc_bridgeco_fill_unit_addr(addr, dir, AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
279 | err = avc_bridgeco_get_plug_ch_pos(bebob->unit, addr, buf, 256); | |
280 | if (err < 0) { | |
281 | dev_err(&bebob->unit->device, | |
282 | "fail to get channel position for isoc %s plug 0: %d\n", | |
283 | (dir == AVC_BRIDGECO_PLUG_DIR_IN) ? "in" : "out", | |
284 | err); | |
285 | goto end; | |
286 | } | |
287 | pos = 0; | |
288 | ||
289 | /* positions in I/O buffer */ | |
290 | pcm = 0; | |
291 | midi = 0; | |
292 | ||
293 | /* the number of sections in AMDTP packet */ | |
294 | sections = buf[pos++]; | |
295 | ||
296 | for (sec = 0; sec < sections; sec++) { | |
297 | /* type of this section */ | |
298 | avc_bridgeco_fill_unit_addr(addr, dir, | |
299 | AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
300 | err = avc_bridgeco_get_plug_section_type(bebob->unit, addr, | |
301 | sec, &type); | |
302 | if (err < 0) { | |
303 | dev_err(&bebob->unit->device, | |
304 | "fail to get section type for isoc %s plug 0: %d\n", | |
305 | (dir == AVC_BRIDGECO_PLUG_DIR_IN) ? "in" : | |
306 | "out", | |
307 | err); | |
308 | goto end; | |
309 | } | |
310 | /* NoType */ | |
311 | if (type == 0xff) { | |
312 | err = -ENOSYS; | |
313 | goto end; | |
314 | } | |
315 | ||
316 | /* the number of channels in this section */ | |
317 | channels = buf[pos++]; | |
318 | ||
319 | for (ch = 0; ch < channels; ch++) { | |
320 | /* position of this channel in AMDTP packet */ | |
321 | stm_pos = buf[pos++] - 1; | |
322 | /* location of this channel in this section */ | |
323 | sec_loc = buf[pos++] - 1; | |
324 | ||
9076c22d TS |
325 | /* |
326 | * Basically the number of location is within the | |
327 | * number of channels in this section. But some models | |
328 | * of M-Audio don't follow this. Its location for MIDI | |
329 | * is the position of MIDI channels in AMDTP packet. | |
330 | */ | |
331 | if (sec_loc >= channels) | |
332 | sec_loc = ch; | |
333 | ||
eb7b3a05 TS |
334 | switch (type) { |
335 | /* for MIDI conformant data channel */ | |
336 | case 0x0a: | |
337 | /* AMDTP_MAX_CHANNELS_FOR_MIDI is 1. */ | |
338 | if ((midi > 0) && (stm_pos != midi)) { | |
339 | err = -ENOSYS; | |
340 | goto end; | |
341 | } | |
f65be911 | 342 | amdtp_am824_set_midi_position(s, stm_pos); |
eb7b3a05 TS |
343 | midi = stm_pos; |
344 | break; | |
345 | /* for PCM data channel */ | |
346 | case 0x01: /* Headphone */ | |
347 | case 0x02: /* Microphone */ | |
348 | case 0x03: /* Line */ | |
349 | case 0x04: /* SPDIF */ | |
350 | case 0x05: /* ADAT */ | |
351 | case 0x06: /* TDIF */ | |
352 | case 0x07: /* MADI */ | |
353 | /* for undefined/changeable signal */ | |
354 | case 0x08: /* Analog */ | |
355 | case 0x09: /* Digital */ | |
356 | default: | |
357 | location = pcm + sec_loc; | |
49c7b3fc | 358 | if (location >= AM824_MAX_CHANNELS_FOR_PCM) { |
eb7b3a05 TS |
359 | err = -ENOSYS; |
360 | goto end; | |
361 | } | |
f65be911 TS |
362 | amdtp_am824_set_pcm_position(s, location, |
363 | stm_pos); | |
eb7b3a05 TS |
364 | break; |
365 | } | |
366 | } | |
367 | ||
368 | if (type != 0x0a) | |
369 | pcm += channels; | |
370 | else | |
371 | midi += channels; | |
372 | } | |
373 | end: | |
374 | kfree(buf); | |
375 | return err; | |
376 | } | |
377 | ||
eb7b3a05 TS |
378 | static int |
379 | check_connection_used_by_others(struct snd_bebob *bebob, struct amdtp_stream *s) | |
380 | { | |
381 | struct cmp_connection *conn; | |
382 | bool used; | |
383 | int err; | |
384 | ||
385 | if (s == &bebob->tx_stream) | |
386 | conn = &bebob->out_conn; | |
387 | else | |
388 | conn = &bebob->in_conn; | |
389 | ||
390 | err = cmp_connection_check_used(conn, &used); | |
391 | if ((err >= 0) && used && !amdtp_stream_running(s)) { | |
392 | dev_err(&bebob->unit->device, | |
393 | "Connection established by others: %cPCR[%d]\n", | |
394 | (conn->direction == CMP_OUTPUT) ? 'o' : 'i', | |
395 | conn->pcr_index); | |
396 | err = -EBUSY; | |
397 | } | |
398 | ||
399 | return err; | |
400 | } | |
401 | ||
ac2888b9 | 402 | static int make_both_connections(struct snd_bebob *bebob) |
eb7b3a05 | 403 | { |
ac2888b9 | 404 | int err = 0; |
b6bc8123 | 405 | |
7bc93821 | 406 | err = cmp_connection_establish(&bebob->out_conn); |
eb7b3a05 | 407 | if (err < 0) |
ac2888b9 TS |
408 | return err; |
409 | ||
7bc93821 | 410 | err = cmp_connection_establish(&bebob->in_conn); |
b6bc8123 | 411 | if (err < 0) { |
eb7b3a05 | 412 | cmp_connection_break(&bebob->out_conn); |
ac2888b9 | 413 | return err; |
b6bc8123 TS |
414 | } |
415 | ||
ac2888b9 | 416 | return 0; |
eb7b3a05 TS |
417 | } |
418 | ||
419 | static void | |
420 | break_both_connections(struct snd_bebob *bebob) | |
421 | { | |
422 | cmp_connection_break(&bebob->in_conn); | |
423 | cmp_connection_break(&bebob->out_conn); | |
b6bc8123 | 424 | |
3149ac48 TS |
425 | /* These models seems to be in transition state for a longer time. */ |
426 | if (bebob->maudio_special_quirk != NULL) | |
427 | msleep(200); | |
eb7b3a05 TS |
428 | } |
429 | ||
eb7b3a05 | 430 | static int |
ac2888b9 | 431 | start_stream(struct snd_bebob *bebob, struct amdtp_stream *stream) |
eb7b3a05 TS |
432 | { |
433 | struct cmp_connection *conn; | |
434 | int err = 0; | |
435 | ||
436 | if (stream == &bebob->rx_stream) | |
437 | conn = &bebob->in_conn; | |
438 | else | |
439 | conn = &bebob->out_conn; | |
440 | ||
441 | /* channel mapping */ | |
3149ac48 TS |
442 | if (bebob->maudio_special_quirk == NULL) { |
443 | err = map_data_channels(bebob, stream); | |
444 | if (err < 0) | |
445 | goto end; | |
446 | } | |
eb7b3a05 | 447 | |
b0db4d51 TS |
448 | // start amdtp stream. |
449 | err = amdtp_domain_add_stream(&bebob->domain, stream, | |
450 | conn->resources.channel, conn->speed); | |
eb7b3a05 TS |
451 | end: |
452 | return err; | |
453 | } | |
454 | ||
33e41a5c | 455 | static int init_stream(struct snd_bebob *bebob, struct amdtp_stream *stream) |
eb7b3a05 | 456 | { |
33e41a5c TS |
457 | enum amdtp_stream_direction dir_stream; |
458 | struct cmp_connection *conn; | |
459 | enum cmp_direction dir_conn; | |
eb7b3a05 TS |
460 | int err; |
461 | ||
33e41a5c TS |
462 | if (stream == &bebob->tx_stream) { |
463 | dir_stream = AMDTP_IN_STREAM; | |
464 | conn = &bebob->out_conn; | |
465 | dir_conn = CMP_OUTPUT; | |
466 | } else { | |
467 | dir_stream = AMDTP_OUT_STREAM; | |
468 | conn = &bebob->in_conn; | |
469 | dir_conn = CMP_INPUT; | |
470 | } | |
471 | ||
472 | err = cmp_connection_init(conn, bebob->unit, dir_conn, 0); | |
eb7b3a05 | 473 | if (err < 0) |
33e41a5c | 474 | return err; |
eb7b3a05 | 475 | |
33e41a5c | 476 | err = amdtp_am824_init(stream, bebob->unit, dir_stream, CIP_BLOCKING); |
eb7b3a05 | 477 | if (err < 0) { |
33e41a5c TS |
478 | cmp_connection_destroy(conn); |
479 | return err; | |
eb7b3a05 | 480 | } |
14a37ac1 | 481 | |
33e41a5c TS |
482 | if (stream == &bebob->tx_stream) { |
483 | // BeBoB v3 transfers packets with these qurks: | |
484 | // - In the beginning of streaming, the value of dbc is | |
485 | // incremented even if no data blocks are transferred. | |
486 | // - The value of dbc is reset suddenly. | |
487 | if (bebob->version > 2) | |
488 | bebob->tx_stream.flags |= CIP_EMPTY_HAS_WRONG_DBC | | |
489 | CIP_SKIP_DBC_ZERO_CHECK; | |
490 | ||
491 | // At high sampling rate, M-Audio special firmware transmits | |
492 | // empty packet with the value of dbc incremented by 8 but the | |
493 | // others are valid to IEC 61883-1. | |
494 | if (bebob->maudio_special_quirk) | |
495 | bebob->tx_stream.flags |= CIP_EMPTY_HAS_WRONG_DBC; | |
496 | } | |
c4d860a0 | 497 | |
33e41a5c TS |
498 | return 0; |
499 | } | |
500 | ||
501 | static void destroy_stream(struct snd_bebob *bebob, struct amdtp_stream *stream) | |
502 | { | |
503 | amdtp_stream_destroy(stream); | |
504 | ||
505 | if (stream == &bebob->tx_stream) | |
506 | cmp_connection_destroy(&bebob->out_conn); | |
507 | else | |
508 | cmp_connection_destroy(&bebob->in_conn); | |
509 | } | |
eb7b3a05 | 510 | |
33e41a5c TS |
511 | int snd_bebob_stream_init_duplex(struct snd_bebob *bebob) |
512 | { | |
513 | int err; | |
514 | ||
515 | err = init_stream(bebob, &bebob->tx_stream); | |
516 | if (err < 0) | |
517 | return err; | |
518 | ||
519 | err = init_stream(bebob, &bebob->rx_stream); | |
eb7b3a05 | 520 | if (err < 0) { |
33e41a5c TS |
521 | destroy_stream(bebob, &bebob->tx_stream); |
522 | return err; | |
eb7b3a05 | 523 | } |
33e41a5c | 524 | |
b0db4d51 TS |
525 | err = amdtp_domain_init(&bebob->domain); |
526 | if (err < 0) { | |
527 | destroy_stream(bebob, &bebob->tx_stream); | |
528 | destroy_stream(bebob, &bebob->rx_stream); | |
529 | } | |
530 | ||
531 | return err; | |
eb7b3a05 TS |
532 | } |
533 | ||
ac2888b9 TS |
534 | static int keep_resources(struct snd_bebob *bebob, struct amdtp_stream *stream, |
535 | unsigned int rate, unsigned int index) | |
eb7b3a05 | 536 | { |
ac2888b9 | 537 | struct snd_bebob_stream_formation *formation; |
7bc93821 TS |
538 | struct cmp_connection *conn; |
539 | int err; | |
eb7b3a05 | 540 | |
7bc93821 | 541 | if (stream == &bebob->tx_stream) { |
ac2888b9 | 542 | formation = bebob->tx_stream_formations + index; |
7bc93821 TS |
543 | conn = &bebob->out_conn; |
544 | } else { | |
ac2888b9 | 545 | formation = bebob->rx_stream_formations + index; |
7bc93821 TS |
546 | conn = &bebob->in_conn; |
547 | } | |
548 | ||
549 | err = amdtp_am824_set_parameters(stream, rate, formation->pcm, | |
550 | formation->midi, false); | |
551 | if (err < 0) | |
552 | return err; | |
eb7b3a05 | 553 | |
7bc93821 | 554 | return cmp_connection_reserve(conn, amdtp_stream_get_max_payload(stream)); |
ac2888b9 TS |
555 | } |
556 | ||
557 | int snd_bebob_stream_reserve_duplex(struct snd_bebob *bebob, unsigned int rate) | |
558 | { | |
559 | unsigned int curr_rate; | |
560 | int err; | |
561 | ||
562 | // Considering JACK/FFADO streaming: | |
563 | // TODO: This can be removed hwdep functionality becomes popular. | |
c71283cb | 564 | err = check_connection_used_by_others(bebob, &bebob->rx_stream); |
eb7b3a05 | 565 | if (err < 0) |
ac2888b9 | 566 | return err; |
eb7b3a05 | 567 | |
ac2888b9 TS |
568 | err = bebob->spec->rate->get(bebob, &curr_rate); |
569 | if (err < 0) | |
570 | return err; | |
571 | if (rate == 0) | |
572 | rate = curr_rate; | |
573 | if (curr_rate != rate) { | |
b0db4d51 | 574 | amdtp_domain_stop(&bebob->domain); |
b6bc8123 | 575 | break_both_connections(bebob); |
7599e279 TS |
576 | |
577 | cmp_connection_release(&bebob->out_conn); | |
578 | cmp_connection_release(&bebob->in_conn); | |
ac2888b9 | 579 | } |
eb7b3a05 | 580 | |
ac2888b9 TS |
581 | if (bebob->substreams_counter == 0 || curr_rate != rate) { |
582 | unsigned int index; | |
583 | ||
584 | // NOTE: | |
585 | // If establishing connections at first, Yamaha GO46 | |
586 | // (and maybe Terratec X24) don't generate sound. | |
587 | // | |
588 | // For firmware customized by M-Audio, refer to next NOTE. | |
589 | err = bebob->spec->rate->set(bebob, rate); | |
590 | if (err < 0) { | |
591 | dev_err(&bebob->unit->device, | |
592 | "fail to set sampling rate: %d\n", | |
593 | err); | |
594 | return err; | |
595 | } | |
596 | ||
597 | err = get_formation_index(rate, &index); | |
598 | if (err < 0) | |
599 | return err; | |
600 | ||
601 | err = keep_resources(bebob, &bebob->tx_stream, rate, index); | |
602 | if (err < 0) | |
603 | return err; | |
604 | ||
605 | err = keep_resources(bebob, &bebob->rx_stream, rate, index); | |
7bc93821 TS |
606 | if (err < 0) { |
607 | cmp_connection_release(&bebob->out_conn); | |
ac2888b9 | 608 | return err; |
7bc93821 | 609 | } |
eb7b3a05 | 610 | } |
ac2888b9 TS |
611 | |
612 | return 0; | |
613 | } | |
614 | ||
615 | int snd_bebob_stream_start_duplex(struct snd_bebob *bebob) | |
616 | { | |
617 | int err; | |
618 | ||
619 | // Need no substreams. | |
620 | if (bebob->substreams_counter == 0) | |
621 | return -EIO; | |
622 | ||
623 | // packet queueing error or detecting discontinuity | |
624 | if (amdtp_streaming_error(&bebob->rx_stream) || | |
625 | amdtp_streaming_error(&bebob->tx_stream)) { | |
b0db4d51 | 626 | amdtp_domain_stop(&bebob->domain); |
eb7b3a05 TS |
627 | break_both_connections(bebob); |
628 | } | |
629 | ||
c71283cb | 630 | if (!amdtp_stream_running(&bebob->rx_stream)) { |
ac2888b9 TS |
631 | unsigned int curr_rate; |
632 | ||
633 | if (bebob->maudio_special_quirk) { | |
634 | err = bebob->spec->rate->get(bebob, &curr_rate); | |
635 | if (err < 0) | |
636 | return err; | |
eb7b3a05 TS |
637 | } |
638 | ||
ac2888b9 | 639 | err = make_both_connections(bebob); |
eb7b3a05 | 640 | if (err < 0) |
ac2888b9 | 641 | return err; |
eb7b3a05 | 642 | |
ac2888b9 | 643 | err = start_stream(bebob, &bebob->rx_stream); |
b0db4d51 TS |
644 | if (err < 0) |
645 | goto error; | |
646 | ||
647 | err = start_stream(bebob, &bebob->tx_stream); | |
648 | if (err < 0) | |
649 | goto error; | |
650 | ||
651 | err = amdtp_domain_start(&bebob->domain); | |
652 | if (err < 0) | |
ac2888b9 | 653 | goto error; |
eb7b3a05 | 654 | |
ac2888b9 TS |
655 | // NOTE: |
656 | // The firmware customized by M-Audio uses these commands to | |
657 | // start transmitting stream. This is not usual way. | |
658 | if (bebob->maudio_special_quirk) { | |
659 | err = bebob->spec->rate->set(bebob, curr_rate); | |
3149ac48 TS |
660 | if (err < 0) { |
661 | dev_err(&bebob->unit->device, | |
662 | "fail to ensure sampling rate: %d\n", | |
663 | err); | |
ac2888b9 | 664 | goto error; |
3149ac48 TS |
665 | } |
666 | } | |
667 | ||
c71283cb | 668 | if (!amdtp_stream_wait_callback(&bebob->rx_stream, |
b0db4d51 TS |
669 | CALLBACK_TIMEOUT) || |
670 | !amdtp_stream_wait_callback(&bebob->tx_stream, | |
c71283cb | 671 | CALLBACK_TIMEOUT)) { |
eb7b3a05 | 672 | err = -ETIMEDOUT; |
ac2888b9 | 673 | goto error; |
eb7b3a05 TS |
674 | } |
675 | } | |
ac2888b9 TS |
676 | |
677 | return 0; | |
678 | error: | |
b0db4d51 | 679 | amdtp_domain_stop(&bebob->domain); |
ac2888b9 | 680 | break_both_connections(bebob); |
eb7b3a05 TS |
681 | return err; |
682 | } | |
683 | ||
684 | void snd_bebob_stream_stop_duplex(struct snd_bebob *bebob) | |
685 | { | |
4fd6c6c7 | 686 | if (bebob->substreams_counter == 0) { |
b0db4d51 | 687 | amdtp_domain_stop(&bebob->domain); |
8d1c2694 | 688 | break_both_connections(bebob); |
7bc93821 TS |
689 | |
690 | cmp_connection_release(&bebob->out_conn); | |
691 | cmp_connection_release(&bebob->in_conn); | |
eb7b3a05 | 692 | } |
eb7b3a05 TS |
693 | } |
694 | ||
d23c2cc4 TS |
695 | /* |
696 | * This function should be called before starting streams or after stopping | |
697 | * streams. | |
698 | */ | |
eb7b3a05 TS |
699 | void snd_bebob_stream_destroy_duplex(struct snd_bebob *bebob) |
700 | { | |
b0db4d51 TS |
701 | amdtp_domain_destroy(&bebob->domain); |
702 | ||
33e41a5c TS |
703 | destroy_stream(bebob, &bebob->tx_stream); |
704 | destroy_stream(bebob, &bebob->rx_stream); | |
eb7b3a05 TS |
705 | } |
706 | ||
707 | /* | |
708 | * See: Table 50: Extended Stream Format Info Format Hierarchy Level 2’ | |
709 | * in Additional AVC commands (Nov 2003, BridgeCo) | |
710 | * Also 'Clause 12 AM824 sequence adaption layers' in IEC 61883-6:2005 | |
711 | */ | |
712 | static int | |
713 | parse_stream_formation(u8 *buf, unsigned int len, | |
714 | struct snd_bebob_stream_formation *formation) | |
715 | { | |
716 | unsigned int i, e, channels, format; | |
717 | ||
718 | /* | |
719 | * this module can support a hierarchy combination that: | |
720 | * Root: Audio and Music (0x90) | |
721 | * Level 1: AM824 Compound (0x40) | |
722 | */ | |
723 | if ((buf[0] != 0x90) || (buf[1] != 0x40)) | |
724 | return -ENOSYS; | |
725 | ||
726 | /* check sampling rate */ | |
727 | for (i = 0; i < ARRAY_SIZE(bridgeco_freq_table); i++) { | |
728 | if (buf[2] == bridgeco_freq_table[i]) | |
729 | break; | |
730 | } | |
33a5f989 | 731 | if (i == ARRAY_SIZE(bridgeco_freq_table)) |
eb7b3a05 TS |
732 | return -ENOSYS; |
733 | ||
734 | /* Avoid double count by different entries for the same rate. */ | |
735 | memset(&formation[i], 0, sizeof(struct snd_bebob_stream_formation)); | |
736 | ||
737 | for (e = 0; e < buf[4]; e++) { | |
738 | channels = buf[5 + e * 2]; | |
739 | format = buf[6 + e * 2]; | |
740 | ||
741 | switch (format) { | |
51fa31d4 | 742 | /* IEC 60958 Conformant, currently handled as MBLA */ |
eb7b3a05 TS |
743 | case 0x00: |
744 | /* Multi bit linear audio */ | |
745 | case 0x06: /* Raw */ | |
746 | formation[i].pcm += channels; | |
747 | break; | |
748 | /* MIDI Conformant */ | |
749 | case 0x0d: | |
750 | formation[i].midi += channels; | |
751 | break; | |
752 | /* IEC 61937-3 to 7 */ | |
753 | case 0x01: | |
754 | case 0x02: | |
755 | case 0x03: | |
756 | case 0x04: | |
757 | case 0x05: | |
758 | /* Multi bit linear audio */ | |
759 | case 0x07: /* DVD-Audio */ | |
760 | case 0x0c: /* High Precision */ | |
761 | /* One Bit Audio */ | |
762 | case 0x08: /* (Plain) Raw */ | |
763 | case 0x09: /* (Plain) SACD */ | |
764 | case 0x0a: /* (Encoded) Raw */ | |
765 | case 0x0b: /* (Encoded) SACD */ | |
766 | /* Synchronization Stream (Stereo Raw audio) */ | |
767 | case 0x40: | |
768 | /* Don't care */ | |
769 | case 0xff: | |
770 | default: | |
771 | return -ENOSYS; /* not supported */ | |
772 | } | |
773 | } | |
774 | ||
49c7b3fc TS |
775 | if (formation[i].pcm > AM824_MAX_CHANNELS_FOR_PCM || |
776 | formation[i].midi > AM824_MAX_CHANNELS_FOR_MIDI) | |
eb7b3a05 TS |
777 | return -ENOSYS; |
778 | ||
779 | return 0; | |
780 | } | |
781 | ||
782 | static int | |
783 | fill_stream_formations(struct snd_bebob *bebob, enum avc_bridgeco_plug_dir dir, | |
784 | unsigned short pid) | |
785 | { | |
786 | u8 *buf; | |
787 | struct snd_bebob_stream_formation *formations; | |
788 | unsigned int len, eid; | |
789 | u8 addr[AVC_BRIDGECO_ADDR_BYTES]; | |
790 | int err; | |
791 | ||
792 | buf = kmalloc(FORMAT_MAXIMUM_LENGTH, GFP_KERNEL); | |
793 | if (buf == NULL) | |
794 | return -ENOMEM; | |
795 | ||
796 | if (dir == AVC_BRIDGECO_PLUG_DIR_IN) | |
797 | formations = bebob->rx_stream_formations; | |
798 | else | |
799 | formations = bebob->tx_stream_formations; | |
800 | ||
801 | for (eid = 0; eid < SND_BEBOB_STRM_FMT_ENTRIES; eid++) { | |
802 | len = FORMAT_MAXIMUM_LENGTH; | |
803 | avc_bridgeco_fill_unit_addr(addr, dir, | |
804 | AVC_BRIDGECO_PLUG_UNIT_ISOC, pid); | |
805 | err = avc_bridgeco_get_plug_strm_fmt(bebob->unit, addr, buf, | |
806 | &len, eid); | |
807 | /* No entries remained. */ | |
808 | if (err == -EINVAL && eid > 0) { | |
809 | err = 0; | |
810 | break; | |
811 | } else if (err < 0) { | |
812 | dev_err(&bebob->unit->device, | |
813 | "fail to get stream format %d for isoc %s plug %d:%d\n", | |
814 | eid, | |
815 | (dir == AVC_BRIDGECO_PLUG_DIR_IN) ? "in" : | |
816 | "out", | |
817 | pid, err); | |
818 | break; | |
819 | } | |
820 | ||
821 | err = parse_stream_formation(buf, len, formations); | |
822 | if (err < 0) | |
823 | break; | |
824 | } | |
825 | ||
826 | kfree(buf); | |
827 | return err; | |
828 | } | |
829 | ||
830 | static int | |
831 | seek_msu_sync_input_plug(struct snd_bebob *bebob) | |
832 | { | |
833 | u8 plugs[AVC_PLUG_INFO_BUF_BYTES], addr[AVC_BRIDGECO_ADDR_BYTES]; | |
a6b598bf TS |
834 | unsigned int i; |
835 | enum avc_bridgeco_plug_type type; | |
eb7b3a05 TS |
836 | int err; |
837 | ||
838 | /* Get the number of Music Sub Unit for both direction. */ | |
839 | err = avc_general_get_plug_info(bebob->unit, 0x0c, 0x00, 0x00, plugs); | |
840 | if (err < 0) { | |
841 | dev_err(&bebob->unit->device, | |
842 | "fail to get info for MSU in/out plugs: %d\n", | |
843 | err); | |
844 | goto end; | |
845 | } | |
846 | ||
847 | /* seek destination plugs for 'MSU sync input' */ | |
848 | bebob->sync_input_plug = -1; | |
849 | for (i = 0; i < plugs[0]; i++) { | |
850 | avc_bridgeco_fill_msu_addr(addr, AVC_BRIDGECO_PLUG_DIR_IN, i); | |
851 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &type); | |
852 | if (err < 0) { | |
853 | dev_err(&bebob->unit->device, | |
854 | "fail to get type for MSU in plug %d: %d\n", | |
855 | i, err); | |
856 | goto end; | |
857 | } | |
858 | ||
859 | if (type == AVC_BRIDGECO_PLUG_TYPE_SYNC) { | |
860 | bebob->sync_input_plug = i; | |
861 | break; | |
862 | } | |
863 | } | |
864 | end: | |
865 | return err; | |
866 | } | |
867 | ||
868 | int snd_bebob_stream_discover(struct snd_bebob *bebob) | |
869 | { | |
6b9866c8 | 870 | const struct snd_bebob_clock_spec *clk_spec = bebob->spec->clock; |
eb7b3a05 TS |
871 | u8 plugs[AVC_PLUG_INFO_BUF_BYTES], addr[AVC_BRIDGECO_ADDR_BYTES]; |
872 | enum avc_bridgeco_plug_type type; | |
873 | unsigned int i; | |
874 | int err; | |
875 | ||
876 | /* the number of plugs for isoc in/out, ext in/out */ | |
877 | err = avc_general_get_plug_info(bebob->unit, 0x1f, 0x07, 0x00, plugs); | |
878 | if (err < 0) { | |
879 | dev_err(&bebob->unit->device, | |
880 | "fail to get info for isoc/external in/out plugs: %d\n", | |
881 | err); | |
882 | goto end; | |
883 | } | |
884 | ||
885 | /* | |
886 | * This module supports at least one isoc input plug and one isoc | |
887 | * output plug. | |
888 | */ | |
889 | if ((plugs[0] == 0) || (plugs[1] == 0)) { | |
890 | err = -ENOSYS; | |
891 | goto end; | |
892 | } | |
893 | ||
894 | avc_bridgeco_fill_unit_addr(addr, AVC_BRIDGECO_PLUG_DIR_IN, | |
895 | AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
896 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &type); | |
897 | if (err < 0) { | |
898 | dev_err(&bebob->unit->device, | |
899 | "fail to get type for isoc in plug 0: %d\n", err); | |
900 | goto end; | |
901 | } else if (type != AVC_BRIDGECO_PLUG_TYPE_ISOC) { | |
902 | err = -ENOSYS; | |
903 | goto end; | |
904 | } | |
905 | err = fill_stream_formations(bebob, AVC_BRIDGECO_PLUG_DIR_IN, 0); | |
906 | if (err < 0) | |
907 | goto end; | |
908 | ||
909 | avc_bridgeco_fill_unit_addr(addr, AVC_BRIDGECO_PLUG_DIR_OUT, | |
910 | AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
911 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &type); | |
912 | if (err < 0) { | |
913 | dev_err(&bebob->unit->device, | |
914 | "fail to get type for isoc out plug 0: %d\n", err); | |
915 | goto end; | |
916 | } else if (type != AVC_BRIDGECO_PLUG_TYPE_ISOC) { | |
917 | err = -ENOSYS; | |
918 | goto end; | |
919 | } | |
920 | err = fill_stream_formations(bebob, AVC_BRIDGECO_PLUG_DIR_OUT, 0); | |
921 | if (err < 0) | |
922 | goto end; | |
923 | ||
924 | /* count external input plugs for MIDI */ | |
925 | bebob->midi_input_ports = 0; | |
926 | for (i = 0; i < plugs[2]; i++) { | |
927 | avc_bridgeco_fill_unit_addr(addr, AVC_BRIDGECO_PLUG_DIR_IN, | |
928 | AVC_BRIDGECO_PLUG_UNIT_EXT, i); | |
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 external in plug %d: %d\n", | |
933 | i, err); | |
934 | goto end; | |
935 | } else if (type == AVC_BRIDGECO_PLUG_TYPE_MIDI) { | |
936 | bebob->midi_input_ports++; | |
937 | } | |
938 | } | |
939 | ||
940 | /* count external output plugs for MIDI */ | |
941 | bebob->midi_output_ports = 0; | |
942 | for (i = 0; i < plugs[3]; i++) { | |
943 | avc_bridgeco_fill_unit_addr(addr, AVC_BRIDGECO_PLUG_DIR_OUT, | |
944 | AVC_BRIDGECO_PLUG_UNIT_EXT, i); | |
945 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &type); | |
946 | if (err < 0) { | |
947 | dev_err(&bebob->unit->device, | |
948 | "fail to get type for external out plug %d: %d\n", | |
949 | i, err); | |
950 | goto end; | |
951 | } else if (type == AVC_BRIDGECO_PLUG_TYPE_MIDI) { | |
952 | bebob->midi_output_ports++; | |
953 | } | |
954 | } | |
955 | ||
956 | /* for check source of clock later */ | |
1fc9522a TS |
957 | if (!clk_spec) |
958 | err = seek_msu_sync_input_plug(bebob); | |
eb7b3a05 TS |
959 | end: |
960 | return err; | |
961 | } | |
618eabea TS |
962 | |
963 | void snd_bebob_stream_lock_changed(struct snd_bebob *bebob) | |
964 | { | |
965 | bebob->dev_lock_changed = true; | |
966 | wake_up(&bebob->hwdep_wait); | |
967 | } | |
968 | ||
969 | int snd_bebob_stream_lock_try(struct snd_bebob *bebob) | |
970 | { | |
971 | int err; | |
972 | ||
973 | spin_lock_irq(&bebob->lock); | |
974 | ||
975 | /* user land lock this */ | |
976 | if (bebob->dev_lock_count < 0) { | |
977 | err = -EBUSY; | |
978 | goto end; | |
979 | } | |
980 | ||
981 | /* this is the first time */ | |
982 | if (bebob->dev_lock_count++ == 0) | |
983 | snd_bebob_stream_lock_changed(bebob); | |
984 | err = 0; | |
985 | end: | |
986 | spin_unlock_irq(&bebob->lock); | |
987 | return err; | |
988 | } | |
989 | ||
990 | void snd_bebob_stream_lock_release(struct snd_bebob *bebob) | |
991 | { | |
992 | spin_lock_irq(&bebob->lock); | |
993 | ||
994 | if (WARN_ON(bebob->dev_lock_count <= 0)) | |
995 | goto end; | |
996 | if (--bebob->dev_lock_count == 0) | |
997 | snd_bebob_stream_lock_changed(bebob); | |
998 | end: | |
999 | spin_unlock_irq(&bebob->lock); | |
1000 | } |