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 | ||
5ec85c19 | 10 | #define READY_TIMEOUT_MS 4000 |
eb7b3a05 TS |
11 | |
12 | /* | |
13 | * NOTE; | |
14 | * For BeBoB streams, Both of input and output CMP connection are important. | |
15 | * | |
16 | * For most devices, each CMP connection starts to transmit/receive a | |
17 | * corresponding stream. But for a few devices, both of CMP connection needs | |
18 | * to start transmitting stream. An example is 'M-Audio Firewire 410'. | |
19 | */ | |
20 | ||
21 | /* 128 is an arbitrary length but it seems to be enough */ | |
22 | #define FORMAT_MAXIMUM_LENGTH 128 | |
23 | ||
24 | const unsigned int snd_bebob_rate_table[SND_BEBOB_STRM_FMT_ENTRIES] = { | |
25 | [0] = 32000, | |
26 | [1] = 44100, | |
27 | [2] = 48000, | |
28 | [3] = 88200, | |
29 | [4] = 96000, | |
30 | [5] = 176400, | |
31 | [6] = 192000, | |
32 | }; | |
33 | ||
34 | /* | |
35 | * See: Table 51: Extended Stream Format Info ‘Sampling Frequency’ | |
36 | * in Additional AVC commands (Nov 2003, BridgeCo) | |
37 | */ | |
38 | static const unsigned int bridgeco_freq_table[] = { | |
39 | [0] = 0x02, | |
40 | [1] = 0x03, | |
41 | [2] = 0x04, | |
42 | [3] = 0x0a, | |
43 | [4] = 0x05, | |
44 | [5] = 0x06, | |
45 | [6] = 0x07, | |
46 | }; | |
47 | ||
07905298 LT |
48 | static int |
49 | get_formation_index(unsigned int rate, unsigned int *index) | |
eb7b3a05 TS |
50 | { |
51 | unsigned int i; | |
52 | ||
53 | for (i = 0; i < ARRAY_SIZE(snd_bebob_rate_table); i++) { | |
07905298 LT |
54 | if (snd_bebob_rate_table[i] == rate) { |
55 | *index = i; | |
56 | return 0; | |
57 | } | |
eb7b3a05 TS |
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 | ||
3e254b16 TS |
119 | int snd_bebob_stream_get_clock_src(struct snd_bebob *bebob, |
120 | enum snd_bebob_clock_type *src) | |
eb7b3a05 | 121 | { |
6b9866c8 | 122 | const 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; |
5a668812 | 125 | enum avc_bridgeco_plug_type type; |
eb7b3a05 TS |
126 | int err = 0; |
127 | ||
1fc9522a TS |
128 | /* 1.The device has its own operation to switch source of clock */ |
129 | if (clk_spec) { | |
130 | err = clk_spec->get(bebob, &id); | |
d1d0b6b6 | 131 | if (err < 0) { |
1fc9522a TS |
132 | dev_err(&bebob->unit->device, |
133 | "fail to get clock source: %d\n", err); | |
d1d0b6b6 CV |
134 | goto end; |
135 | } | |
136 | ||
137 | if (id >= clk_spec->num) { | |
138 | dev_err(&bebob->unit->device, | |
139 | "clock source %d out of range 0..%d\n", | |
140 | id, clk_spec->num - 1); | |
141 | err = -EIO; | |
142 | goto end; | |
143 | } | |
144 | ||
3e254b16 | 145 | *src = clk_spec->types[id]; |
1fc9522a TS |
146 | goto end; |
147 | } | |
148 | ||
eb7b3a05 | 149 | /* |
1fc9522a | 150 | * 2.The device don't support to switch source of clock then assumed |
eb7b3a05 TS |
151 | * to use internal clock always |
152 | */ | |
153 | if (bebob->sync_input_plug < 0) { | |
3e254b16 | 154 | *src = SND_BEBOB_CLOCK_TYPE_INTERNAL; |
eb7b3a05 TS |
155 | goto end; |
156 | } | |
157 | ||
158 | /* | |
1fc9522a | 159 | * 3.The device supports to switch source of clock by an usual way. |
eb7b3a05 TS |
160 | * Let's check input for 'Music Sub Unit Sync Input' plug. |
161 | */ | |
162 | avc_bridgeco_fill_msu_addr(addr, AVC_BRIDGECO_PLUG_DIR_IN, | |
163 | bebob->sync_input_plug); | |
164 | err = avc_bridgeco_get_plug_input(bebob->unit, addr, input); | |
165 | if (err < 0) { | |
166 | dev_err(&bebob->unit->device, | |
167 | "fail to get an input for MSU in plug %d: %d\n", | |
168 | bebob->sync_input_plug, err); | |
169 | goto end; | |
170 | } | |
171 | ||
172 | /* | |
173 | * If there are no input plugs, all of fields are 0xff. | |
174 | * Here check the first field. This field is used for direction. | |
175 | */ | |
176 | if (input[0] == 0xff) { | |
3e254b16 | 177 | *src = SND_BEBOB_CLOCK_TYPE_INTERNAL; |
eb7b3a05 TS |
178 | goto end; |
179 | } | |
180 | ||
5a668812 TS |
181 | /* The source from any output plugs is for one purpose only. */ |
182 | if (input[0] == AVC_BRIDGECO_PLUG_DIR_OUT) { | |
183 | /* | |
184 | * In BeBoB architecture, the source from music subunit may | |
185 | * bypass from oPCR[0]. This means that this source gives | |
186 | * synchronization to IEEE 1394 cycle start packet. | |
187 | */ | |
188 | if (input[1] == AVC_BRIDGECO_PLUG_MODE_SUBUNIT && | |
189 | input[2] == 0x0c) { | |
3e254b16 | 190 | *src = SND_BEBOB_CLOCK_TYPE_INTERNAL; |
5a668812 TS |
191 | goto end; |
192 | } | |
193 | /* The source from any input units is for several purposes. */ | |
194 | } else if (input[1] == AVC_BRIDGECO_PLUG_MODE_UNIT) { | |
195 | if (input[2] == AVC_BRIDGECO_PLUG_UNIT_ISOC) { | |
196 | if (input[3] == 0x00) { | |
197 | /* | |
198 | * This source comes from iPCR[0]. This means | |
199 | * that presentation timestamp calculated by | |
200 | * SYT series of the received packets. In | |
201 | * short, this driver is the master of | |
202 | * synchronization. | |
203 | */ | |
3e254b16 | 204 | *src = SND_BEBOB_CLOCK_TYPE_SYT; |
5a668812 TS |
205 | goto end; |
206 | } else { | |
207 | /* | |
208 | * This source comes from iPCR[1-29]. This | |
209 | * means that the synchronization stream is not | |
210 | * the Audio/MIDI compound stream. | |
211 | */ | |
3e254b16 | 212 | *src = SND_BEBOB_CLOCK_TYPE_EXTERNAL; |
5a668812 TS |
213 | goto end; |
214 | } | |
215 | } else if (input[2] == AVC_BRIDGECO_PLUG_UNIT_EXT) { | |
216 | /* Check type of this plug. */ | |
217 | avc_bridgeco_fill_unit_addr(addr, | |
218 | AVC_BRIDGECO_PLUG_DIR_IN, | |
219 | AVC_BRIDGECO_PLUG_UNIT_EXT, | |
220 | input[3]); | |
221 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, | |
222 | &type); | |
223 | if (err < 0) | |
224 | goto end; | |
225 | ||
226 | if (type == AVC_BRIDGECO_PLUG_TYPE_DIG) { | |
227 | /* | |
228 | * SPDIF/ADAT or sometimes (not always) word | |
229 | * clock. | |
230 | */ | |
3e254b16 | 231 | *src = SND_BEBOB_CLOCK_TYPE_EXTERNAL; |
5a668812 TS |
232 | goto end; |
233 | } else if (type == AVC_BRIDGECO_PLUG_TYPE_SYNC) { | |
234 | /* Often word clock. */ | |
3e254b16 | 235 | *src = SND_BEBOB_CLOCK_TYPE_EXTERNAL; |
5a668812 TS |
236 | goto end; |
237 | } else if (type == AVC_BRIDGECO_PLUG_TYPE_ADDITION) { | |
238 | /* | |
239 | * Not standard. | |
240 | * Mostly, additional internal clock. | |
241 | */ | |
3e254b16 | 242 | *src = SND_BEBOB_CLOCK_TYPE_INTERNAL; |
5a668812 TS |
243 | goto end; |
244 | } | |
245 | } | |
246 | } | |
247 | ||
248 | /* Not supported. */ | |
249 | err = -EIO; | |
eb7b3a05 TS |
250 | end: |
251 | return err; | |
252 | } | |
253 | ||
f2bbdbcb | 254 | static int map_data_channels(struct snd_bebob *bebob, struct amdtp_stream *s) |
eb7b3a05 TS |
255 | { |
256 | unsigned int sec, sections, ch, channels; | |
257 | unsigned int pcm, midi, location; | |
258 | unsigned int stm_pos, sec_loc, pos; | |
259 | u8 *buf, addr[AVC_BRIDGECO_ADDR_BYTES], type; | |
260 | enum avc_bridgeco_plug_dir dir; | |
261 | int err; | |
262 | ||
263 | /* | |
264 | * The length of return value of this command cannot be expected. Here | |
265 | * use the maximum length of FCP. | |
266 | */ | |
267 | buf = kzalloc(256, GFP_KERNEL); | |
268 | if (buf == NULL) | |
269 | return -ENOMEM; | |
270 | ||
271 | if (s == &bebob->tx_stream) | |
272 | dir = AVC_BRIDGECO_PLUG_DIR_OUT; | |
273 | else | |
274 | dir = AVC_BRIDGECO_PLUG_DIR_IN; | |
275 | ||
276 | avc_bridgeco_fill_unit_addr(addr, dir, AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
277 | err = avc_bridgeco_get_plug_ch_pos(bebob->unit, addr, buf, 256); | |
278 | if (err < 0) { | |
279 | dev_err(&bebob->unit->device, | |
280 | "fail to get channel position for isoc %s plug 0: %d\n", | |
281 | (dir == AVC_BRIDGECO_PLUG_DIR_IN) ? "in" : "out", | |
282 | err); | |
283 | goto end; | |
284 | } | |
285 | pos = 0; | |
286 | ||
287 | /* positions in I/O buffer */ | |
288 | pcm = 0; | |
289 | midi = 0; | |
290 | ||
291 | /* the number of sections in AMDTP packet */ | |
292 | sections = buf[pos++]; | |
293 | ||
294 | for (sec = 0; sec < sections; sec++) { | |
295 | /* type of this section */ | |
296 | avc_bridgeco_fill_unit_addr(addr, dir, | |
297 | AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
298 | err = avc_bridgeco_get_plug_section_type(bebob->unit, addr, | |
299 | sec, &type); | |
300 | if (err < 0) { | |
301 | dev_err(&bebob->unit->device, | |
302 | "fail to get section type for isoc %s plug 0: %d\n", | |
303 | (dir == AVC_BRIDGECO_PLUG_DIR_IN) ? "in" : | |
304 | "out", | |
305 | err); | |
306 | goto end; | |
307 | } | |
308 | /* NoType */ | |
309 | if (type == 0xff) { | |
310 | err = -ENOSYS; | |
311 | goto end; | |
312 | } | |
313 | ||
314 | /* the number of channels in this section */ | |
315 | channels = buf[pos++]; | |
316 | ||
317 | for (ch = 0; ch < channels; ch++) { | |
318 | /* position of this channel in AMDTP packet */ | |
319 | stm_pos = buf[pos++] - 1; | |
320 | /* location of this channel in this section */ | |
321 | sec_loc = buf[pos++] - 1; | |
322 | ||
9076c22d TS |
323 | /* |
324 | * Basically the number of location is within the | |
325 | * number of channels in this section. But some models | |
326 | * of M-Audio don't follow this. Its location for MIDI | |
327 | * is the position of MIDI channels in AMDTP packet. | |
328 | */ | |
329 | if (sec_loc >= channels) | |
330 | sec_loc = ch; | |
331 | ||
eb7b3a05 TS |
332 | switch (type) { |
333 | /* for MIDI conformant data channel */ | |
334 | case 0x0a: | |
335 | /* AMDTP_MAX_CHANNELS_FOR_MIDI is 1. */ | |
336 | if ((midi > 0) && (stm_pos != midi)) { | |
337 | err = -ENOSYS; | |
338 | goto end; | |
339 | } | |
f65be911 | 340 | amdtp_am824_set_midi_position(s, stm_pos); |
eb7b3a05 TS |
341 | midi = stm_pos; |
342 | break; | |
343 | /* for PCM data channel */ | |
344 | case 0x01: /* Headphone */ | |
345 | case 0x02: /* Microphone */ | |
346 | case 0x03: /* Line */ | |
347 | case 0x04: /* SPDIF */ | |
348 | case 0x05: /* ADAT */ | |
349 | case 0x06: /* TDIF */ | |
350 | case 0x07: /* MADI */ | |
351 | /* for undefined/changeable signal */ | |
352 | case 0x08: /* Analog */ | |
353 | case 0x09: /* Digital */ | |
354 | default: | |
355 | location = pcm + sec_loc; | |
49c7b3fc | 356 | if (location >= AM824_MAX_CHANNELS_FOR_PCM) { |
eb7b3a05 TS |
357 | err = -ENOSYS; |
358 | goto end; | |
359 | } | |
f65be911 TS |
360 | amdtp_am824_set_pcm_position(s, location, |
361 | stm_pos); | |
eb7b3a05 TS |
362 | break; |
363 | } | |
364 | } | |
365 | ||
366 | if (type != 0x0a) | |
367 | pcm += channels; | |
368 | else | |
369 | midi += channels; | |
370 | } | |
371 | end: | |
372 | kfree(buf); | |
373 | return err; | |
374 | } | |
375 | ||
eb7b3a05 TS |
376 | static int |
377 | check_connection_used_by_others(struct snd_bebob *bebob, struct amdtp_stream *s) | |
378 | { | |
379 | struct cmp_connection *conn; | |
380 | bool used; | |
381 | int err; | |
382 | ||
383 | if (s == &bebob->tx_stream) | |
384 | conn = &bebob->out_conn; | |
385 | else | |
386 | conn = &bebob->in_conn; | |
387 | ||
388 | err = cmp_connection_check_used(conn, &used); | |
389 | if ((err >= 0) && used && !amdtp_stream_running(s)) { | |
390 | dev_err(&bebob->unit->device, | |
391 | "Connection established by others: %cPCR[%d]\n", | |
392 | (conn->direction == CMP_OUTPUT) ? 'o' : 'i', | |
393 | conn->pcr_index); | |
394 | err = -EBUSY; | |
395 | } | |
396 | ||
397 | return err; | |
398 | } | |
399 | ||
d3eabe93 | 400 | static void break_both_connections(struct snd_bebob *bebob) |
eb7b3a05 TS |
401 | { |
402 | cmp_connection_break(&bebob->in_conn); | |
403 | cmp_connection_break(&bebob->out_conn); | |
404 | } | |
405 | ||
6c94f380 | 406 | static int start_stream(struct snd_bebob *bebob, struct amdtp_stream *stream) |
eb7b3a05 TS |
407 | { |
408 | struct cmp_connection *conn; | |
409 | int err = 0; | |
410 | ||
411 | if (stream == &bebob->rx_stream) | |
412 | conn = &bebob->in_conn; | |
413 | else | |
414 | conn = &bebob->out_conn; | |
415 | ||
6c94f380 | 416 | // channel mapping. |
3149ac48 TS |
417 | if (bebob->maudio_special_quirk == NULL) { |
418 | err = map_data_channels(bebob, stream); | |
419 | if (err < 0) | |
6c94f380 | 420 | return err; |
3149ac48 | 421 | } |
eb7b3a05 | 422 | |
6c94f380 TS |
423 | err = cmp_connection_establish(conn); |
424 | if (err < 0) | |
425 | return err; | |
426 | ||
427 | return amdtp_domain_add_stream(&bebob->domain, stream, | |
428 | conn->resources.channel, conn->speed); | |
eb7b3a05 TS |
429 | } |
430 | ||
33e41a5c | 431 | static int init_stream(struct snd_bebob *bebob, struct amdtp_stream *stream) |
eb7b3a05 | 432 | { |
93cd12d6 | 433 | unsigned int flags = CIP_BLOCKING; |
33e41a5c TS |
434 | enum amdtp_stream_direction dir_stream; |
435 | struct cmp_connection *conn; | |
436 | enum cmp_direction dir_conn; | |
eb7b3a05 TS |
437 | int err; |
438 | ||
33e41a5c TS |
439 | if (stream == &bebob->tx_stream) { |
440 | dir_stream = AMDTP_IN_STREAM; | |
441 | conn = &bebob->out_conn; | |
442 | dir_conn = CMP_OUTPUT; | |
443 | } else { | |
444 | dir_stream = AMDTP_OUT_STREAM; | |
445 | conn = &bebob->in_conn; | |
446 | dir_conn = CMP_INPUT; | |
447 | } | |
448 | ||
93cd12d6 TS |
449 | if (stream == &bebob->tx_stream) { |
450 | if (bebob->quirks & SND_BEBOB_QUIRK_WRONG_DBC) | |
451 | flags |= CIP_EMPTY_HAS_WRONG_DBC; | |
452 | } | |
453 | ||
33e41a5c | 454 | err = cmp_connection_init(conn, bebob->unit, dir_conn, 0); |
eb7b3a05 | 455 | if (err < 0) |
33e41a5c | 456 | return err; |
eb7b3a05 | 457 | |
93cd12d6 | 458 | err = amdtp_am824_init(stream, bebob->unit, dir_stream, flags); |
eb7b3a05 | 459 | if (err < 0) { |
33e41a5c TS |
460 | cmp_connection_destroy(conn); |
461 | return err; | |
eb7b3a05 | 462 | } |
14a37ac1 | 463 | |
33e41a5c TS |
464 | return 0; |
465 | } | |
466 | ||
467 | static void destroy_stream(struct snd_bebob *bebob, struct amdtp_stream *stream) | |
468 | { | |
469 | amdtp_stream_destroy(stream); | |
470 | ||
471 | if (stream == &bebob->tx_stream) | |
472 | cmp_connection_destroy(&bebob->out_conn); | |
473 | else | |
474 | cmp_connection_destroy(&bebob->in_conn); | |
475 | } | |
eb7b3a05 | 476 | |
33e41a5c TS |
477 | int snd_bebob_stream_init_duplex(struct snd_bebob *bebob) |
478 | { | |
479 | int err; | |
480 | ||
481 | err = init_stream(bebob, &bebob->tx_stream); | |
482 | if (err < 0) | |
483 | return err; | |
484 | ||
485 | err = init_stream(bebob, &bebob->rx_stream); | |
eb7b3a05 | 486 | if (err < 0) { |
33e41a5c TS |
487 | destroy_stream(bebob, &bebob->tx_stream); |
488 | return err; | |
eb7b3a05 | 489 | } |
33e41a5c | 490 | |
b0db4d51 TS |
491 | err = amdtp_domain_init(&bebob->domain); |
492 | if (err < 0) { | |
493 | destroy_stream(bebob, &bebob->tx_stream); | |
494 | destroy_stream(bebob, &bebob->rx_stream); | |
495 | } | |
496 | ||
497 | return err; | |
eb7b3a05 TS |
498 | } |
499 | ||
ac2888b9 TS |
500 | static int keep_resources(struct snd_bebob *bebob, struct amdtp_stream *stream, |
501 | unsigned int rate, unsigned int index) | |
eb7b3a05 | 502 | { |
d2b6f15b TS |
503 | unsigned int pcm_channels; |
504 | unsigned int midi_ports; | |
7bc93821 TS |
505 | struct cmp_connection *conn; |
506 | int err; | |
eb7b3a05 | 507 | |
7bc93821 | 508 | if (stream == &bebob->tx_stream) { |
d2b6f15b TS |
509 | pcm_channels = bebob->tx_stream_formations[index].pcm; |
510 | midi_ports = bebob->midi_input_ports; | |
7bc93821 TS |
511 | conn = &bebob->out_conn; |
512 | } else { | |
d2b6f15b TS |
513 | pcm_channels = bebob->rx_stream_formations[index].pcm; |
514 | midi_ports = bebob->midi_output_ports; | |
7bc93821 TS |
515 | conn = &bebob->in_conn; |
516 | } | |
517 | ||
d2b6f15b | 518 | err = amdtp_am824_set_parameters(stream, rate, pcm_channels, midi_ports, false); |
7bc93821 TS |
519 | if (err < 0) |
520 | return err; | |
eb7b3a05 | 521 | |
7bc93821 | 522 | return cmp_connection_reserve(conn, amdtp_stream_get_max_payload(stream)); |
ac2888b9 TS |
523 | } |
524 | ||
8737209f | 525 | int snd_bebob_stream_reserve_duplex(struct snd_bebob *bebob, unsigned int rate, |
1fde7a44 TS |
526 | unsigned int frames_per_period, |
527 | unsigned int frames_per_buffer) | |
ac2888b9 TS |
528 | { |
529 | unsigned int curr_rate; | |
530 | int err; | |
531 | ||
532 | // Considering JACK/FFADO streaming: | |
533 | // TODO: This can be removed hwdep functionality becomes popular. | |
c71283cb | 534 | err = check_connection_used_by_others(bebob, &bebob->rx_stream); |
eb7b3a05 | 535 | if (err < 0) |
ac2888b9 | 536 | return err; |
eb7b3a05 | 537 | |
ac2888b9 TS |
538 | err = bebob->spec->rate->get(bebob, &curr_rate); |
539 | if (err < 0) | |
540 | return err; | |
541 | if (rate == 0) | |
542 | rate = curr_rate; | |
543 | if (curr_rate != rate) { | |
b0db4d51 | 544 | amdtp_domain_stop(&bebob->domain); |
b6bc8123 | 545 | break_both_connections(bebob); |
7599e279 TS |
546 | |
547 | cmp_connection_release(&bebob->out_conn); | |
548 | cmp_connection_release(&bebob->in_conn); | |
ac2888b9 | 549 | } |
eb7b3a05 | 550 | |
ac2888b9 TS |
551 | if (bebob->substreams_counter == 0 || curr_rate != rate) { |
552 | unsigned int index; | |
553 | ||
554 | // NOTE: | |
555 | // If establishing connections at first, Yamaha GO46 | |
556 | // (and maybe Terratec X24) don't generate sound. | |
557 | // | |
558 | // For firmware customized by M-Audio, refer to next NOTE. | |
559 | err = bebob->spec->rate->set(bebob, rate); | |
560 | if (err < 0) { | |
561 | dev_err(&bebob->unit->device, | |
562 | "fail to set sampling rate: %d\n", | |
563 | err); | |
564 | return err; | |
565 | } | |
566 | ||
567 | err = get_formation_index(rate, &index); | |
568 | if (err < 0) | |
569 | return err; | |
570 | ||
571 | err = keep_resources(bebob, &bebob->tx_stream, rate, index); | |
572 | if (err < 0) | |
573 | return err; | |
574 | ||
575 | err = keep_resources(bebob, &bebob->rx_stream, rate, index); | |
7bc93821 TS |
576 | if (err < 0) { |
577 | cmp_connection_release(&bebob->out_conn); | |
ac2888b9 | 578 | return err; |
7bc93821 | 579 | } |
8737209f TS |
580 | |
581 | err = amdtp_domain_set_events_per_period(&bebob->domain, | |
1fde7a44 | 582 | frames_per_period, frames_per_buffer); |
8737209f TS |
583 | if (err < 0) { |
584 | cmp_connection_release(&bebob->out_conn); | |
585 | cmp_connection_release(&bebob->in_conn); | |
586 | return err; | |
587 | } | |
eb7b3a05 | 588 | } |
ac2888b9 TS |
589 | |
590 | return 0; | |
591 | } | |
592 | ||
593 | int snd_bebob_stream_start_duplex(struct snd_bebob *bebob) | |
594 | { | |
595 | int err; | |
596 | ||
597 | // Need no substreams. | |
598 | if (bebob->substreams_counter == 0) | |
599 | return -EIO; | |
600 | ||
601 | // packet queueing error or detecting discontinuity | |
602 | if (amdtp_streaming_error(&bebob->rx_stream) || | |
603 | amdtp_streaming_error(&bebob->tx_stream)) { | |
b0db4d51 | 604 | amdtp_domain_stop(&bebob->domain); |
eb7b3a05 TS |
605 | break_both_connections(bebob); |
606 | } | |
607 | ||
c71283cb | 608 | if (!amdtp_stream_running(&bebob->rx_stream)) { |
6c94f380 | 609 | enum snd_bebob_clock_type src; |
ac2888b9 | 610 | unsigned int curr_rate; |
26541cb1 | 611 | unsigned int tx_init_skip_cycles; |
ac2888b9 TS |
612 | |
613 | if (bebob->maudio_special_quirk) { | |
614 | err = bebob->spec->rate->get(bebob, &curr_rate); | |
615 | if (err < 0) | |
616 | return err; | |
eb7b3a05 TS |
617 | } |
618 | ||
6c94f380 | 619 | err = snd_bebob_stream_get_clock_src(bebob, &src); |
eb7b3a05 | 620 | if (err < 0) |
ac2888b9 | 621 | return err; |
eb7b3a05 | 622 | |
266807f9 | 623 | err = start_stream(bebob, &bebob->rx_stream); |
b0db4d51 TS |
624 | if (err < 0) |
625 | goto error; | |
626 | ||
266807f9 | 627 | err = start_stream(bebob, &bebob->tx_stream); |
b0db4d51 TS |
628 | if (err < 0) |
629 | goto error; | |
630 | ||
93cd12d6 | 631 | if (!(bebob->quirks & SND_BEBOB_QUIRK_INITIAL_DISCONTINUOUS_DBC)) |
5ec85c19 | 632 | tx_init_skip_cycles = 0; |
da5e8337 | 633 | else |
26541cb1 | 634 | tx_init_skip_cycles = 16000; |
5ec85c19 | 635 | |
1bd1b3be TS |
636 | // MEMO: Some devices start packet transmission long enough after establishment of |
637 | // CMP connection. In the early stage of packet streaming, any device transfers | |
638 | // NODATA packets. After several hundred cycles, it begins to multiplex event into | |
639 | // the packet with adequate value of syt field in CIP header. Some devices are | |
640 | // strictly to generate any discontinuity in the sequence of tx packet when they | |
641 | // receives inadequate sequence of value in syt field of CIP header. In the case, | |
642 | // the request to break CMP connection is often corrupted, then any transaction | |
643 | // results in unrecoverable error, sometimes generate bus-reset. | |
644 | err = amdtp_domain_start(&bebob->domain, tx_init_skip_cycles, true, false); | |
b0db4d51 | 645 | if (err < 0) |
ac2888b9 | 646 | goto error; |
eb7b3a05 | 647 | |
ac2888b9 TS |
648 | // NOTE: |
649 | // The firmware customized by M-Audio uses these commands to | |
650 | // start transmitting stream. This is not usual way. | |
651 | if (bebob->maudio_special_quirk) { | |
652 | err = bebob->spec->rate->set(bebob, curr_rate); | |
3149ac48 TS |
653 | if (err < 0) { |
654 | dev_err(&bebob->unit->device, | |
655 | "fail to ensure sampling rate: %d\n", | |
656 | err); | |
ac2888b9 | 657 | goto error; |
3149ac48 TS |
658 | } |
659 | } | |
660 | ||
26541cb1 TS |
661 | // Some devices postpone start of transmission mostly for 1 sec after receives |
662 | // packets firstly. | |
bdaedca7 | 663 | if (!amdtp_domain_wait_ready(&bebob->domain, READY_TIMEOUT_MS)) { |
eb7b3a05 | 664 | err = -ETIMEDOUT; |
ac2888b9 | 665 | goto error; |
eb7b3a05 TS |
666 | } |
667 | } | |
ac2888b9 TS |
668 | |
669 | return 0; | |
670 | error: | |
b0db4d51 | 671 | amdtp_domain_stop(&bebob->domain); |
ac2888b9 | 672 | break_both_connections(bebob); |
eb7b3a05 TS |
673 | return err; |
674 | } | |
675 | ||
676 | void snd_bebob_stream_stop_duplex(struct snd_bebob *bebob) | |
677 | { | |
4fd6c6c7 | 678 | if (bebob->substreams_counter == 0) { |
b0db4d51 | 679 | amdtp_domain_stop(&bebob->domain); |
8d1c2694 | 680 | break_both_connections(bebob); |
7bc93821 TS |
681 | |
682 | cmp_connection_release(&bebob->out_conn); | |
683 | cmp_connection_release(&bebob->in_conn); | |
eb7b3a05 | 684 | } |
eb7b3a05 TS |
685 | } |
686 | ||
d23c2cc4 TS |
687 | /* |
688 | * This function should be called before starting streams or after stopping | |
689 | * streams. | |
690 | */ | |
eb7b3a05 TS |
691 | void snd_bebob_stream_destroy_duplex(struct snd_bebob *bebob) |
692 | { | |
b0db4d51 TS |
693 | amdtp_domain_destroy(&bebob->domain); |
694 | ||
33e41a5c TS |
695 | destroy_stream(bebob, &bebob->tx_stream); |
696 | destroy_stream(bebob, &bebob->rx_stream); | |
eb7b3a05 TS |
697 | } |
698 | ||
699 | /* | |
700 | * See: Table 50: Extended Stream Format Info Format Hierarchy Level 2’ | |
701 | * in Additional AVC commands (Nov 2003, BridgeCo) | |
702 | * Also 'Clause 12 AM824 sequence adaption layers' in IEC 61883-6:2005 | |
703 | */ | |
704 | static int | |
705 | parse_stream_formation(u8 *buf, unsigned int len, | |
706 | struct snd_bebob_stream_formation *formation) | |
707 | { | |
708 | unsigned int i, e, channels, format; | |
709 | ||
710 | /* | |
711 | * this module can support a hierarchy combination that: | |
712 | * Root: Audio and Music (0x90) | |
713 | * Level 1: AM824 Compound (0x40) | |
714 | */ | |
715 | if ((buf[0] != 0x90) || (buf[1] != 0x40)) | |
716 | return -ENOSYS; | |
717 | ||
718 | /* check sampling rate */ | |
719 | for (i = 0; i < ARRAY_SIZE(bridgeco_freq_table); i++) { | |
720 | if (buf[2] == bridgeco_freq_table[i]) | |
721 | break; | |
722 | } | |
33a5f989 | 723 | if (i == ARRAY_SIZE(bridgeco_freq_table)) |
eb7b3a05 TS |
724 | return -ENOSYS; |
725 | ||
726 | /* Avoid double count by different entries for the same rate. */ | |
727 | memset(&formation[i], 0, sizeof(struct snd_bebob_stream_formation)); | |
728 | ||
729 | for (e = 0; e < buf[4]; e++) { | |
730 | channels = buf[5 + e * 2]; | |
731 | format = buf[6 + e * 2]; | |
732 | ||
733 | switch (format) { | |
51fa31d4 | 734 | /* IEC 60958 Conformant, currently handled as MBLA */ |
eb7b3a05 TS |
735 | case 0x00: |
736 | /* Multi bit linear audio */ | |
737 | case 0x06: /* Raw */ | |
738 | formation[i].pcm += channels; | |
739 | break; | |
740 | /* MIDI Conformant */ | |
741 | case 0x0d: | |
742 | formation[i].midi += channels; | |
743 | break; | |
744 | /* IEC 61937-3 to 7 */ | |
745 | case 0x01: | |
746 | case 0x02: | |
747 | case 0x03: | |
748 | case 0x04: | |
749 | case 0x05: | |
750 | /* Multi bit linear audio */ | |
751 | case 0x07: /* DVD-Audio */ | |
752 | case 0x0c: /* High Precision */ | |
753 | /* One Bit Audio */ | |
754 | case 0x08: /* (Plain) Raw */ | |
755 | case 0x09: /* (Plain) SACD */ | |
756 | case 0x0a: /* (Encoded) Raw */ | |
757 | case 0x0b: /* (Encoded) SACD */ | |
758 | /* Synchronization Stream (Stereo Raw audio) */ | |
759 | case 0x40: | |
760 | /* Don't care */ | |
761 | case 0xff: | |
762 | default: | |
763 | return -ENOSYS; /* not supported */ | |
764 | } | |
765 | } | |
766 | ||
49c7b3fc TS |
767 | if (formation[i].pcm > AM824_MAX_CHANNELS_FOR_PCM || |
768 | formation[i].midi > AM824_MAX_CHANNELS_FOR_MIDI) | |
eb7b3a05 TS |
769 | return -ENOSYS; |
770 | ||
771 | return 0; | |
772 | } | |
773 | ||
caa27151 TS |
774 | static int fill_stream_formations(struct snd_bebob *bebob, u8 addr[AVC_BRIDGECO_ADDR_BYTES], |
775 | enum avc_bridgeco_plug_dir plug_dir, unsigned int plug_id, | |
776 | struct snd_bebob_stream_formation *formations) | |
eb7b3a05 | 777 | { |
caa27151 | 778 | enum avc_bridgeco_plug_type plug_type; |
eb7b3a05 | 779 | u8 *buf; |
eb7b3a05 | 780 | unsigned int len, eid; |
eb7b3a05 TS |
781 | int err; |
782 | ||
caa27151 TS |
783 | avc_bridgeco_fill_unit_addr(addr, plug_dir, AVC_BRIDGECO_PLUG_UNIT_ISOC, plug_id); |
784 | ||
785 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &plug_type); | |
786 | if (err < 0) { | |
787 | dev_err(&bebob->unit->device, | |
788 | "Fail to get type for isoc %d plug 0: %d\n", plug_dir, err); | |
789 | return err; | |
790 | } else if (plug_type != AVC_BRIDGECO_PLUG_TYPE_ISOC) | |
791 | return -ENXIO; | |
792 | ||
eb7b3a05 TS |
793 | buf = kmalloc(FORMAT_MAXIMUM_LENGTH, GFP_KERNEL); |
794 | if (buf == NULL) | |
795 | return -ENOMEM; | |
796 | ||
caa27151 TS |
797 | for (eid = 0; eid < SND_BEBOB_STRM_FMT_ENTRIES; ++eid) { |
798 | avc_bridgeco_fill_unit_addr(addr, plug_dir, AVC_BRIDGECO_PLUG_UNIT_ISOC, plug_id); | |
eb7b3a05 | 799 | |
eb7b3a05 | 800 | len = FORMAT_MAXIMUM_LENGTH; |
caa27151 TS |
801 | err = avc_bridgeco_get_plug_strm_fmt(bebob->unit, addr, buf, &len, eid); |
802 | // No entries remained. | |
eb7b3a05 TS |
803 | if (err == -EINVAL && eid > 0) { |
804 | err = 0; | |
805 | break; | |
806 | } else if (err < 0) { | |
807 | dev_err(&bebob->unit->device, | |
caa27151 TS |
808 | "fail to get stream format %d for isoc %d plug %d:%d\n", |
809 | eid, plug_dir, plug_id, err); | |
eb7b3a05 TS |
810 | break; |
811 | } | |
812 | ||
813 | err = parse_stream_formation(buf, len, formations); | |
814 | if (err < 0) | |
815 | break; | |
816 | } | |
817 | ||
818 | kfree(buf); | |
819 | return err; | |
820 | } | |
821 | ||
5c6ea94f TS |
822 | static int detect_midi_ports(struct snd_bebob *bebob, |
823 | const struct snd_bebob_stream_formation *formats, | |
824 | u8 addr[AVC_BRIDGECO_ADDR_BYTES], enum avc_bridgeco_plug_dir plug_dir, | |
825 | unsigned int plug_count, unsigned int *midi_ports) | |
826 | { | |
827 | int i; | |
828 | int err = 0; | |
829 | ||
830 | *midi_ports = 0; | |
831 | ||
832 | /// Detect the number of available MIDI ports when packet has MIDI conformant data channel. | |
833 | for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; ++i) { | |
834 | if (formats[i].midi > 0) | |
835 | break; | |
836 | } | |
837 | if (i >= SND_BEBOB_STRM_FMT_ENTRIES) | |
838 | return 0; | |
839 | ||
840 | for (i = 0; i < plug_count; ++i) { | |
841 | enum avc_bridgeco_plug_type plug_type; | |
842 | unsigned int ch_count; | |
843 | ||
844 | avc_bridgeco_fill_unit_addr(addr, plug_dir, AVC_BRIDGECO_PLUG_UNIT_EXT, i); | |
845 | ||
846 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &plug_type); | |
847 | if (err < 0) { | |
848 | dev_err(&bebob->unit->device, | |
849 | "fail to get type for external %d plug %d: %d\n", | |
850 | plug_dir, i, err); | |
851 | break; | |
852 | } else if (plug_type != AVC_BRIDGECO_PLUG_TYPE_MIDI) { | |
853 | continue; | |
854 | } | |
855 | ||
856 | err = avc_bridgeco_get_plug_ch_count(bebob->unit, addr, &ch_count); | |
857 | if (err < 0) | |
858 | break; | |
6b6c17fe TS |
859 | // Yamaha GO44, GO46, Terratec Phase 24, Phase x24 reports 0 for the number of |
860 | // channels in external output plug 3 (MIDI type) even if it has a pair of physical | |
861 | // MIDI jacks. As a workaround, assume it as one. | |
862 | if (ch_count == 0) | |
863 | ch_count = 1; | |
5c6ea94f TS |
864 | *midi_ports += ch_count; |
865 | } | |
866 | ||
867 | return err; | |
868 | } | |
869 | ||
eb7b3a05 TS |
870 | static int |
871 | seek_msu_sync_input_plug(struct snd_bebob *bebob) | |
872 | { | |
873 | u8 plugs[AVC_PLUG_INFO_BUF_BYTES], addr[AVC_BRIDGECO_ADDR_BYTES]; | |
a6b598bf TS |
874 | unsigned int i; |
875 | enum avc_bridgeco_plug_type type; | |
eb7b3a05 TS |
876 | int err; |
877 | ||
878 | /* Get the number of Music Sub Unit for both direction. */ | |
879 | err = avc_general_get_plug_info(bebob->unit, 0x0c, 0x00, 0x00, plugs); | |
880 | if (err < 0) { | |
881 | dev_err(&bebob->unit->device, | |
882 | "fail to get info for MSU in/out plugs: %d\n", | |
883 | err); | |
884 | goto end; | |
885 | } | |
886 | ||
887 | /* seek destination plugs for 'MSU sync input' */ | |
888 | bebob->sync_input_plug = -1; | |
889 | for (i = 0; i < plugs[0]; i++) { | |
890 | avc_bridgeco_fill_msu_addr(addr, AVC_BRIDGECO_PLUG_DIR_IN, i); | |
891 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &type); | |
892 | if (err < 0) { | |
893 | dev_err(&bebob->unit->device, | |
894 | "fail to get type for MSU in plug %d: %d\n", | |
895 | i, err); | |
896 | goto end; | |
897 | } | |
898 | ||
899 | if (type == AVC_BRIDGECO_PLUG_TYPE_SYNC) { | |
900 | bebob->sync_input_plug = i; | |
901 | break; | |
902 | } | |
903 | } | |
904 | end: | |
905 | return err; | |
906 | } | |
907 | ||
908 | int snd_bebob_stream_discover(struct snd_bebob *bebob) | |
909 | { | |
6b9866c8 | 910 | const struct snd_bebob_clock_spec *clk_spec = bebob->spec->clock; |
eb7b3a05 | 911 | u8 plugs[AVC_PLUG_INFO_BUF_BYTES], addr[AVC_BRIDGECO_ADDR_BYTES]; |
eb7b3a05 TS |
912 | int err; |
913 | ||
914 | /* the number of plugs for isoc in/out, ext in/out */ | |
915 | err = avc_general_get_plug_info(bebob->unit, 0x1f, 0x07, 0x00, plugs); | |
916 | if (err < 0) { | |
917 | dev_err(&bebob->unit->device, | |
918 | "fail to get info for isoc/external in/out plugs: %d\n", | |
919 | err); | |
920 | goto end; | |
921 | } | |
922 | ||
923 | /* | |
924 | * This module supports at least one isoc input plug and one isoc | |
925 | * output plug. | |
926 | */ | |
927 | if ((plugs[0] == 0) || (plugs[1] == 0)) { | |
928 | err = -ENOSYS; | |
929 | goto end; | |
930 | } | |
931 | ||
caa27151 TS |
932 | err = fill_stream_formations(bebob, addr, AVC_BRIDGECO_PLUG_DIR_IN, 0, |
933 | bebob->rx_stream_formations); | |
eb7b3a05 TS |
934 | if (err < 0) |
935 | goto end; | |
936 | ||
caa27151 TS |
937 | err = fill_stream_formations(bebob, addr, AVC_BRIDGECO_PLUG_DIR_OUT, 0, |
938 | bebob->tx_stream_formations); | |
eb7b3a05 TS |
939 | if (err < 0) |
940 | goto end; | |
941 | ||
6b6c17fe | 942 | err = detect_midi_ports(bebob, bebob->tx_stream_formations, addr, AVC_BRIDGECO_PLUG_DIR_IN, |
5c6ea94f TS |
943 | plugs[2], &bebob->midi_input_ports); |
944 | if (err < 0) | |
945 | goto end; | |
eb7b3a05 | 946 | |
6b6c17fe | 947 | err = detect_midi_ports(bebob, bebob->rx_stream_formations, addr, AVC_BRIDGECO_PLUG_DIR_OUT, |
5c6ea94f TS |
948 | plugs[3], &bebob->midi_output_ports); |
949 | if (err < 0) | |
950 | goto end; | |
eb7b3a05 TS |
951 | |
952 | /* for check source of clock later */ | |
1fc9522a TS |
953 | if (!clk_spec) |
954 | err = seek_msu_sync_input_plug(bebob); | |
eb7b3a05 TS |
955 | end: |
956 | return err; | |
957 | } | |
618eabea TS |
958 | |
959 | void snd_bebob_stream_lock_changed(struct snd_bebob *bebob) | |
960 | { | |
961 | bebob->dev_lock_changed = true; | |
962 | wake_up(&bebob->hwdep_wait); | |
963 | } | |
964 | ||
965 | int snd_bebob_stream_lock_try(struct snd_bebob *bebob) | |
966 | { | |
967 | int err; | |
968 | ||
969 | spin_lock_irq(&bebob->lock); | |
970 | ||
971 | /* user land lock this */ | |
972 | if (bebob->dev_lock_count < 0) { | |
973 | err = -EBUSY; | |
974 | goto end; | |
975 | } | |
976 | ||
977 | /* this is the first time */ | |
978 | if (bebob->dev_lock_count++ == 0) | |
979 | snd_bebob_stream_lock_changed(bebob); | |
980 | err = 0; | |
981 | end: | |
982 | spin_unlock_irq(&bebob->lock); | |
983 | return err; | |
984 | } | |
985 | ||
986 | void snd_bebob_stream_lock_release(struct snd_bebob *bebob) | |
987 | { | |
988 | spin_lock_irq(&bebob->lock); | |
989 | ||
990 | if (WARN_ON(bebob->dev_lock_count <= 0)) | |
991 | goto end; | |
992 | if (--bebob->dev_lock_count == 0) | |
993 | snd_bebob_stream_lock_changed(bebob); | |
994 | end: | |
995 | spin_unlock_irq(&bebob->lock); | |
996 | } |