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 | ||
da5e8337 | 10 | #define CALLBACK_TIMEOUT 2500 |
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 | ||
f2bbdbcb | 255 | static int map_data_channels(struct snd_bebob *bebob, struct amdtp_stream *s) |
eb7b3a05 TS |
256 | { |
257 | unsigned int sec, sections, ch, channels; | |
258 | unsigned int pcm, midi, location; | |
259 | unsigned int stm_pos, sec_loc, pos; | |
260 | u8 *buf, addr[AVC_BRIDGECO_ADDR_BYTES], type; | |
261 | enum avc_bridgeco_plug_dir dir; | |
262 | int err; | |
263 | ||
264 | /* | |
265 | * The length of return value of this command cannot be expected. Here | |
266 | * use the maximum length of FCP. | |
267 | */ | |
268 | buf = kzalloc(256, GFP_KERNEL); | |
269 | if (buf == NULL) | |
270 | return -ENOMEM; | |
271 | ||
272 | if (s == &bebob->tx_stream) | |
273 | dir = AVC_BRIDGECO_PLUG_DIR_OUT; | |
274 | else | |
275 | dir = AVC_BRIDGECO_PLUG_DIR_IN; | |
276 | ||
277 | avc_bridgeco_fill_unit_addr(addr, dir, AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
278 | err = avc_bridgeco_get_plug_ch_pos(bebob->unit, addr, buf, 256); | |
279 | if (err < 0) { | |
280 | dev_err(&bebob->unit->device, | |
281 | "fail to get channel position for isoc %s plug 0: %d\n", | |
282 | (dir == AVC_BRIDGECO_PLUG_DIR_IN) ? "in" : "out", | |
283 | err); | |
284 | goto end; | |
285 | } | |
286 | pos = 0; | |
287 | ||
288 | /* positions in I/O buffer */ | |
289 | pcm = 0; | |
290 | midi = 0; | |
291 | ||
292 | /* the number of sections in AMDTP packet */ | |
293 | sections = buf[pos++]; | |
294 | ||
295 | for (sec = 0; sec < sections; sec++) { | |
296 | /* type of this section */ | |
297 | avc_bridgeco_fill_unit_addr(addr, dir, | |
298 | AVC_BRIDGECO_PLUG_UNIT_ISOC, 0); | |
299 | err = avc_bridgeco_get_plug_section_type(bebob->unit, addr, | |
300 | sec, &type); | |
301 | if (err < 0) { | |
302 | dev_err(&bebob->unit->device, | |
303 | "fail to get section type for isoc %s plug 0: %d\n", | |
304 | (dir == AVC_BRIDGECO_PLUG_DIR_IN) ? "in" : | |
305 | "out", | |
306 | err); | |
307 | goto end; | |
308 | } | |
309 | /* NoType */ | |
310 | if (type == 0xff) { | |
311 | err = -ENOSYS; | |
312 | goto end; | |
313 | } | |
314 | ||
315 | /* the number of channels in this section */ | |
316 | channels = buf[pos++]; | |
317 | ||
318 | for (ch = 0; ch < channels; ch++) { | |
319 | /* position of this channel in AMDTP packet */ | |
320 | stm_pos = buf[pos++] - 1; | |
321 | /* location of this channel in this section */ | |
322 | sec_loc = buf[pos++] - 1; | |
323 | ||
9076c22d TS |
324 | /* |
325 | * Basically the number of location is within the | |
326 | * number of channels in this section. But some models | |
327 | * of M-Audio don't follow this. Its location for MIDI | |
328 | * is the position of MIDI channels in AMDTP packet. | |
329 | */ | |
330 | if (sec_loc >= channels) | |
331 | sec_loc = ch; | |
332 | ||
eb7b3a05 TS |
333 | switch (type) { |
334 | /* for MIDI conformant data channel */ | |
335 | case 0x0a: | |
336 | /* AMDTP_MAX_CHANNELS_FOR_MIDI is 1. */ | |
337 | if ((midi > 0) && (stm_pos != midi)) { | |
338 | err = -ENOSYS; | |
339 | goto end; | |
340 | } | |
f65be911 | 341 | amdtp_am824_set_midi_position(s, stm_pos); |
eb7b3a05 TS |
342 | midi = stm_pos; |
343 | break; | |
344 | /* for PCM data channel */ | |
345 | case 0x01: /* Headphone */ | |
346 | case 0x02: /* Microphone */ | |
347 | case 0x03: /* Line */ | |
348 | case 0x04: /* SPDIF */ | |
349 | case 0x05: /* ADAT */ | |
350 | case 0x06: /* TDIF */ | |
351 | case 0x07: /* MADI */ | |
352 | /* for undefined/changeable signal */ | |
353 | case 0x08: /* Analog */ | |
354 | case 0x09: /* Digital */ | |
355 | default: | |
356 | location = pcm + sec_loc; | |
49c7b3fc | 357 | if (location >= AM824_MAX_CHANNELS_FOR_PCM) { |
eb7b3a05 TS |
358 | err = -ENOSYS; |
359 | goto end; | |
360 | } | |
f65be911 TS |
361 | amdtp_am824_set_pcm_position(s, location, |
362 | stm_pos); | |
eb7b3a05 TS |
363 | break; |
364 | } | |
365 | } | |
366 | ||
367 | if (type != 0x0a) | |
368 | pcm += channels; | |
369 | else | |
370 | midi += channels; | |
371 | } | |
372 | end: | |
373 | kfree(buf); | |
374 | return err; | |
375 | } | |
376 | ||
eb7b3a05 TS |
377 | static int |
378 | check_connection_used_by_others(struct snd_bebob *bebob, struct amdtp_stream *s) | |
379 | { | |
380 | struct cmp_connection *conn; | |
381 | bool used; | |
382 | int err; | |
383 | ||
384 | if (s == &bebob->tx_stream) | |
385 | conn = &bebob->out_conn; | |
386 | else | |
387 | conn = &bebob->in_conn; | |
388 | ||
389 | err = cmp_connection_check_used(conn, &used); | |
390 | if ((err >= 0) && used && !amdtp_stream_running(s)) { | |
391 | dev_err(&bebob->unit->device, | |
392 | "Connection established by others: %cPCR[%d]\n", | |
393 | (conn->direction == CMP_OUTPUT) ? 'o' : 'i', | |
394 | conn->pcr_index); | |
395 | err = -EBUSY; | |
396 | } | |
397 | ||
398 | return err; | |
399 | } | |
400 | ||
d3eabe93 | 401 | static void break_both_connections(struct snd_bebob *bebob) |
eb7b3a05 TS |
402 | { |
403 | cmp_connection_break(&bebob->in_conn); | |
404 | cmp_connection_break(&bebob->out_conn); | |
b6bc8123 | 405 | |
d3eabe93 TS |
406 | // These models seem to be in transition state for a longer time. When |
407 | // accessing in the state, any transactions is corrupted. In the worst | |
408 | // case, the device is going to reboot. | |
409 | if (bebob->version < 2) | |
410 | msleep(600); | |
eb7b3a05 TS |
411 | } |
412 | ||
6c94f380 | 413 | static int start_stream(struct snd_bebob *bebob, struct amdtp_stream *stream) |
eb7b3a05 TS |
414 | { |
415 | struct cmp_connection *conn; | |
416 | int err = 0; | |
417 | ||
418 | if (stream == &bebob->rx_stream) | |
419 | conn = &bebob->in_conn; | |
420 | else | |
421 | conn = &bebob->out_conn; | |
422 | ||
6c94f380 | 423 | // channel mapping. |
3149ac48 TS |
424 | if (bebob->maudio_special_quirk == NULL) { |
425 | err = map_data_channels(bebob, stream); | |
426 | if (err < 0) | |
6c94f380 | 427 | return err; |
3149ac48 | 428 | } |
eb7b3a05 | 429 | |
6c94f380 TS |
430 | err = cmp_connection_establish(conn); |
431 | if (err < 0) | |
432 | return err; | |
433 | ||
434 | return amdtp_domain_add_stream(&bebob->domain, stream, | |
435 | conn->resources.channel, conn->speed); | |
eb7b3a05 TS |
436 | } |
437 | ||
33e41a5c | 438 | static int init_stream(struct snd_bebob *bebob, struct amdtp_stream *stream) |
eb7b3a05 | 439 | { |
33e41a5c TS |
440 | enum amdtp_stream_direction dir_stream; |
441 | struct cmp_connection *conn; | |
442 | enum cmp_direction dir_conn; | |
eb7b3a05 TS |
443 | int err; |
444 | ||
33e41a5c TS |
445 | if (stream == &bebob->tx_stream) { |
446 | dir_stream = AMDTP_IN_STREAM; | |
447 | conn = &bebob->out_conn; | |
448 | dir_conn = CMP_OUTPUT; | |
449 | } else { | |
450 | dir_stream = AMDTP_OUT_STREAM; | |
451 | conn = &bebob->in_conn; | |
452 | dir_conn = CMP_INPUT; | |
453 | } | |
454 | ||
455 | err = cmp_connection_init(conn, bebob->unit, dir_conn, 0); | |
eb7b3a05 | 456 | if (err < 0) |
33e41a5c | 457 | return err; |
eb7b3a05 | 458 | |
33e41a5c | 459 | err = amdtp_am824_init(stream, bebob->unit, dir_stream, CIP_BLOCKING); |
eb7b3a05 | 460 | if (err < 0) { |
33e41a5c TS |
461 | cmp_connection_destroy(conn); |
462 | return err; | |
eb7b3a05 | 463 | } |
14a37ac1 | 464 | |
33e41a5c TS |
465 | if (stream == &bebob->tx_stream) { |
466 | // BeBoB v3 transfers packets with these qurks: | |
467 | // - In the beginning of streaming, the value of dbc is | |
468 | // incremented even if no data blocks are transferred. | |
469 | // - The value of dbc is reset suddenly. | |
470 | if (bebob->version > 2) | |
471 | bebob->tx_stream.flags |= CIP_EMPTY_HAS_WRONG_DBC | | |
472 | CIP_SKIP_DBC_ZERO_CHECK; | |
473 | ||
474 | // At high sampling rate, M-Audio special firmware transmits | |
475 | // empty packet with the value of dbc incremented by 8 but the | |
476 | // others are valid to IEC 61883-1. | |
477 | if (bebob->maudio_special_quirk) | |
478 | bebob->tx_stream.flags |= CIP_EMPTY_HAS_WRONG_DBC; | |
479 | } | |
c4d860a0 | 480 | |
33e41a5c TS |
481 | return 0; |
482 | } | |
483 | ||
484 | static void destroy_stream(struct snd_bebob *bebob, struct amdtp_stream *stream) | |
485 | { | |
486 | amdtp_stream_destroy(stream); | |
487 | ||
488 | if (stream == &bebob->tx_stream) | |
489 | cmp_connection_destroy(&bebob->out_conn); | |
490 | else | |
491 | cmp_connection_destroy(&bebob->in_conn); | |
492 | } | |
eb7b3a05 | 493 | |
33e41a5c TS |
494 | int snd_bebob_stream_init_duplex(struct snd_bebob *bebob) |
495 | { | |
496 | int err; | |
497 | ||
498 | err = init_stream(bebob, &bebob->tx_stream); | |
499 | if (err < 0) | |
500 | return err; | |
501 | ||
502 | err = init_stream(bebob, &bebob->rx_stream); | |
eb7b3a05 | 503 | if (err < 0) { |
33e41a5c TS |
504 | destroy_stream(bebob, &bebob->tx_stream); |
505 | return err; | |
eb7b3a05 | 506 | } |
33e41a5c | 507 | |
b0db4d51 TS |
508 | err = amdtp_domain_init(&bebob->domain); |
509 | if (err < 0) { | |
510 | destroy_stream(bebob, &bebob->tx_stream); | |
511 | destroy_stream(bebob, &bebob->rx_stream); | |
512 | } | |
513 | ||
514 | return err; | |
eb7b3a05 TS |
515 | } |
516 | ||
ac2888b9 TS |
517 | static int keep_resources(struct snd_bebob *bebob, struct amdtp_stream *stream, |
518 | unsigned int rate, unsigned int index) | |
eb7b3a05 | 519 | { |
d2b6f15b TS |
520 | unsigned int pcm_channels; |
521 | unsigned int midi_ports; | |
7bc93821 TS |
522 | struct cmp_connection *conn; |
523 | int err; | |
eb7b3a05 | 524 | |
7bc93821 | 525 | if (stream == &bebob->tx_stream) { |
d2b6f15b TS |
526 | pcm_channels = bebob->tx_stream_formations[index].pcm; |
527 | midi_ports = bebob->midi_input_ports; | |
7bc93821 TS |
528 | conn = &bebob->out_conn; |
529 | } else { | |
d2b6f15b TS |
530 | pcm_channels = bebob->rx_stream_formations[index].pcm; |
531 | midi_ports = bebob->midi_output_ports; | |
7bc93821 TS |
532 | conn = &bebob->in_conn; |
533 | } | |
534 | ||
d2b6f15b | 535 | err = amdtp_am824_set_parameters(stream, rate, pcm_channels, midi_ports, false); |
7bc93821 TS |
536 | if (err < 0) |
537 | return err; | |
eb7b3a05 | 538 | |
7bc93821 | 539 | return cmp_connection_reserve(conn, amdtp_stream_get_max_payload(stream)); |
ac2888b9 TS |
540 | } |
541 | ||
8737209f | 542 | int snd_bebob_stream_reserve_duplex(struct snd_bebob *bebob, unsigned int rate, |
1fde7a44 TS |
543 | unsigned int frames_per_period, |
544 | unsigned int frames_per_buffer) | |
ac2888b9 TS |
545 | { |
546 | unsigned int curr_rate; | |
547 | int err; | |
548 | ||
549 | // Considering JACK/FFADO streaming: | |
550 | // TODO: This can be removed hwdep functionality becomes popular. | |
c71283cb | 551 | err = check_connection_used_by_others(bebob, &bebob->rx_stream); |
eb7b3a05 | 552 | if (err < 0) |
ac2888b9 | 553 | return err; |
eb7b3a05 | 554 | |
ac2888b9 TS |
555 | err = bebob->spec->rate->get(bebob, &curr_rate); |
556 | if (err < 0) | |
557 | return err; | |
558 | if (rate == 0) | |
559 | rate = curr_rate; | |
560 | if (curr_rate != rate) { | |
b0db4d51 | 561 | amdtp_domain_stop(&bebob->domain); |
b6bc8123 | 562 | break_both_connections(bebob); |
7599e279 TS |
563 | |
564 | cmp_connection_release(&bebob->out_conn); | |
565 | cmp_connection_release(&bebob->in_conn); | |
ac2888b9 | 566 | } |
eb7b3a05 | 567 | |
ac2888b9 TS |
568 | if (bebob->substreams_counter == 0 || curr_rate != rate) { |
569 | unsigned int index; | |
570 | ||
571 | // NOTE: | |
572 | // If establishing connections at first, Yamaha GO46 | |
573 | // (and maybe Terratec X24) don't generate sound. | |
574 | // | |
575 | // For firmware customized by M-Audio, refer to next NOTE. | |
576 | err = bebob->spec->rate->set(bebob, rate); | |
577 | if (err < 0) { | |
578 | dev_err(&bebob->unit->device, | |
579 | "fail to set sampling rate: %d\n", | |
580 | err); | |
581 | return err; | |
582 | } | |
583 | ||
584 | err = get_formation_index(rate, &index); | |
585 | if (err < 0) | |
586 | return err; | |
587 | ||
588 | err = keep_resources(bebob, &bebob->tx_stream, rate, index); | |
589 | if (err < 0) | |
590 | return err; | |
591 | ||
592 | err = keep_resources(bebob, &bebob->rx_stream, rate, index); | |
7bc93821 TS |
593 | if (err < 0) { |
594 | cmp_connection_release(&bebob->out_conn); | |
ac2888b9 | 595 | return err; |
7bc93821 | 596 | } |
8737209f TS |
597 | |
598 | err = amdtp_domain_set_events_per_period(&bebob->domain, | |
1fde7a44 | 599 | frames_per_period, frames_per_buffer); |
8737209f TS |
600 | if (err < 0) { |
601 | cmp_connection_release(&bebob->out_conn); | |
602 | cmp_connection_release(&bebob->in_conn); | |
603 | return err; | |
604 | } | |
eb7b3a05 | 605 | } |
ac2888b9 TS |
606 | |
607 | return 0; | |
608 | } | |
609 | ||
610 | int snd_bebob_stream_start_duplex(struct snd_bebob *bebob) | |
611 | { | |
612 | int err; | |
613 | ||
614 | // Need no substreams. | |
615 | if (bebob->substreams_counter == 0) | |
616 | return -EIO; | |
617 | ||
618 | // packet queueing error or detecting discontinuity | |
619 | if (amdtp_streaming_error(&bebob->rx_stream) || | |
620 | amdtp_streaming_error(&bebob->tx_stream)) { | |
b0db4d51 | 621 | amdtp_domain_stop(&bebob->domain); |
eb7b3a05 TS |
622 | break_both_connections(bebob); |
623 | } | |
624 | ||
c71283cb | 625 | if (!amdtp_stream_running(&bebob->rx_stream)) { |
6c94f380 TS |
626 | enum snd_bebob_clock_type src; |
627 | struct amdtp_stream *master, *slave; | |
ac2888b9 | 628 | unsigned int curr_rate; |
da5e8337 | 629 | unsigned int ir_delay_cycle; |
ac2888b9 TS |
630 | |
631 | if (bebob->maudio_special_quirk) { | |
632 | err = bebob->spec->rate->get(bebob, &curr_rate); | |
633 | if (err < 0) | |
634 | return err; | |
eb7b3a05 TS |
635 | } |
636 | ||
6c94f380 | 637 | err = snd_bebob_stream_get_clock_src(bebob, &src); |
eb7b3a05 | 638 | if (err < 0) |
ac2888b9 | 639 | return err; |
eb7b3a05 | 640 | |
6c94f380 TS |
641 | if (src != SND_BEBOB_CLOCK_TYPE_SYT) { |
642 | master = &bebob->tx_stream; | |
643 | slave = &bebob->rx_stream; | |
644 | } else { | |
645 | master = &bebob->rx_stream; | |
646 | slave = &bebob->tx_stream; | |
647 | } | |
648 | ||
649 | err = start_stream(bebob, master); | |
b0db4d51 TS |
650 | if (err < 0) |
651 | goto error; | |
652 | ||
6c94f380 | 653 | err = start_stream(bebob, slave); |
b0db4d51 TS |
654 | if (err < 0) |
655 | goto error; | |
656 | ||
acfedcbe TS |
657 | // The device postpones start of transmission mostly for 1 sec |
658 | // after receives packets firstly. For safe, IR context starts | |
da5e8337 TS |
659 | // 0.4 sec (=3200 cycles) later to version 1 or 2 firmware, |
660 | // 2.0 sec (=16000 cycles) for version 3 firmware. This is | |
661 | // within 2.5 sec (=CALLBACK_TIMEOUT). | |
acfedcbe TS |
662 | // Furthermore, some devices transfer isoc packets with |
663 | // discontinuous counter in the beginning of packet streaming. | |
664 | // The delay has an effect to avoid detection of this | |
665 | // discontinuity. | |
da5e8337 TS |
666 | if (bebob->version < 2) |
667 | ir_delay_cycle = 3200; | |
668 | else | |
669 | ir_delay_cycle = 16000; | |
670 | err = amdtp_domain_start(&bebob->domain, ir_delay_cycle); | |
b0db4d51 | 671 | if (err < 0) |
ac2888b9 | 672 | goto error; |
eb7b3a05 | 673 | |
ac2888b9 TS |
674 | // NOTE: |
675 | // The firmware customized by M-Audio uses these commands to | |
676 | // start transmitting stream. This is not usual way. | |
677 | if (bebob->maudio_special_quirk) { | |
678 | err = bebob->spec->rate->set(bebob, curr_rate); | |
3149ac48 TS |
679 | if (err < 0) { |
680 | dev_err(&bebob->unit->device, | |
681 | "fail to ensure sampling rate: %d\n", | |
682 | err); | |
ac2888b9 | 683 | goto error; |
3149ac48 TS |
684 | } |
685 | } | |
686 | ||
c71283cb | 687 | if (!amdtp_stream_wait_callback(&bebob->rx_stream, |
b0db4d51 TS |
688 | CALLBACK_TIMEOUT) || |
689 | !amdtp_stream_wait_callback(&bebob->tx_stream, | |
c71283cb | 690 | CALLBACK_TIMEOUT)) { |
eb7b3a05 | 691 | err = -ETIMEDOUT; |
ac2888b9 | 692 | goto error; |
eb7b3a05 TS |
693 | } |
694 | } | |
ac2888b9 TS |
695 | |
696 | return 0; | |
697 | error: | |
b0db4d51 | 698 | amdtp_domain_stop(&bebob->domain); |
ac2888b9 | 699 | break_both_connections(bebob); |
eb7b3a05 TS |
700 | return err; |
701 | } | |
702 | ||
703 | void snd_bebob_stream_stop_duplex(struct snd_bebob *bebob) | |
704 | { | |
4fd6c6c7 | 705 | if (bebob->substreams_counter == 0) { |
b0db4d51 | 706 | amdtp_domain_stop(&bebob->domain); |
8d1c2694 | 707 | break_both_connections(bebob); |
7bc93821 TS |
708 | |
709 | cmp_connection_release(&bebob->out_conn); | |
710 | cmp_connection_release(&bebob->in_conn); | |
eb7b3a05 | 711 | } |
eb7b3a05 TS |
712 | } |
713 | ||
d23c2cc4 TS |
714 | /* |
715 | * This function should be called before starting streams or after stopping | |
716 | * streams. | |
717 | */ | |
eb7b3a05 TS |
718 | void snd_bebob_stream_destroy_duplex(struct snd_bebob *bebob) |
719 | { | |
b0db4d51 TS |
720 | amdtp_domain_destroy(&bebob->domain); |
721 | ||
33e41a5c TS |
722 | destroy_stream(bebob, &bebob->tx_stream); |
723 | destroy_stream(bebob, &bebob->rx_stream); | |
eb7b3a05 TS |
724 | } |
725 | ||
726 | /* | |
727 | * See: Table 50: Extended Stream Format Info Format Hierarchy Level 2’ | |
728 | * in Additional AVC commands (Nov 2003, BridgeCo) | |
729 | * Also 'Clause 12 AM824 sequence adaption layers' in IEC 61883-6:2005 | |
730 | */ | |
731 | static int | |
732 | parse_stream_formation(u8 *buf, unsigned int len, | |
733 | struct snd_bebob_stream_formation *formation) | |
734 | { | |
735 | unsigned int i, e, channels, format; | |
736 | ||
737 | /* | |
738 | * this module can support a hierarchy combination that: | |
739 | * Root: Audio and Music (0x90) | |
740 | * Level 1: AM824 Compound (0x40) | |
741 | */ | |
742 | if ((buf[0] != 0x90) || (buf[1] != 0x40)) | |
743 | return -ENOSYS; | |
744 | ||
745 | /* check sampling rate */ | |
746 | for (i = 0; i < ARRAY_SIZE(bridgeco_freq_table); i++) { | |
747 | if (buf[2] == bridgeco_freq_table[i]) | |
748 | break; | |
749 | } | |
33a5f989 | 750 | if (i == ARRAY_SIZE(bridgeco_freq_table)) |
eb7b3a05 TS |
751 | return -ENOSYS; |
752 | ||
753 | /* Avoid double count by different entries for the same rate. */ | |
754 | memset(&formation[i], 0, sizeof(struct snd_bebob_stream_formation)); | |
755 | ||
756 | for (e = 0; e < buf[4]; e++) { | |
757 | channels = buf[5 + e * 2]; | |
758 | format = buf[6 + e * 2]; | |
759 | ||
760 | switch (format) { | |
51fa31d4 | 761 | /* IEC 60958 Conformant, currently handled as MBLA */ |
eb7b3a05 TS |
762 | case 0x00: |
763 | /* Multi bit linear audio */ | |
764 | case 0x06: /* Raw */ | |
765 | formation[i].pcm += channels; | |
766 | break; | |
767 | /* MIDI Conformant */ | |
768 | case 0x0d: | |
769 | formation[i].midi += channels; | |
770 | break; | |
771 | /* IEC 61937-3 to 7 */ | |
772 | case 0x01: | |
773 | case 0x02: | |
774 | case 0x03: | |
775 | case 0x04: | |
776 | case 0x05: | |
777 | /* Multi bit linear audio */ | |
778 | case 0x07: /* DVD-Audio */ | |
779 | case 0x0c: /* High Precision */ | |
780 | /* One Bit Audio */ | |
781 | case 0x08: /* (Plain) Raw */ | |
782 | case 0x09: /* (Plain) SACD */ | |
783 | case 0x0a: /* (Encoded) Raw */ | |
784 | case 0x0b: /* (Encoded) SACD */ | |
785 | /* Synchronization Stream (Stereo Raw audio) */ | |
786 | case 0x40: | |
787 | /* Don't care */ | |
788 | case 0xff: | |
789 | default: | |
790 | return -ENOSYS; /* not supported */ | |
791 | } | |
792 | } | |
793 | ||
49c7b3fc TS |
794 | if (formation[i].pcm > AM824_MAX_CHANNELS_FOR_PCM || |
795 | formation[i].midi > AM824_MAX_CHANNELS_FOR_MIDI) | |
eb7b3a05 TS |
796 | return -ENOSYS; |
797 | ||
798 | return 0; | |
799 | } | |
800 | ||
caa27151 TS |
801 | static int fill_stream_formations(struct snd_bebob *bebob, u8 addr[AVC_BRIDGECO_ADDR_BYTES], |
802 | enum avc_bridgeco_plug_dir plug_dir, unsigned int plug_id, | |
803 | struct snd_bebob_stream_formation *formations) | |
eb7b3a05 | 804 | { |
caa27151 | 805 | enum avc_bridgeco_plug_type plug_type; |
eb7b3a05 | 806 | u8 *buf; |
eb7b3a05 | 807 | unsigned int len, eid; |
eb7b3a05 TS |
808 | int err; |
809 | ||
caa27151 TS |
810 | avc_bridgeco_fill_unit_addr(addr, plug_dir, AVC_BRIDGECO_PLUG_UNIT_ISOC, plug_id); |
811 | ||
812 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &plug_type); | |
813 | if (err < 0) { | |
814 | dev_err(&bebob->unit->device, | |
815 | "Fail to get type for isoc %d plug 0: %d\n", plug_dir, err); | |
816 | return err; | |
817 | } else if (plug_type != AVC_BRIDGECO_PLUG_TYPE_ISOC) | |
818 | return -ENXIO; | |
819 | ||
eb7b3a05 TS |
820 | buf = kmalloc(FORMAT_MAXIMUM_LENGTH, GFP_KERNEL); |
821 | if (buf == NULL) | |
822 | return -ENOMEM; | |
823 | ||
caa27151 TS |
824 | for (eid = 0; eid < SND_BEBOB_STRM_FMT_ENTRIES; ++eid) { |
825 | avc_bridgeco_fill_unit_addr(addr, plug_dir, AVC_BRIDGECO_PLUG_UNIT_ISOC, plug_id); | |
eb7b3a05 | 826 | |
eb7b3a05 | 827 | len = FORMAT_MAXIMUM_LENGTH; |
caa27151 TS |
828 | err = avc_bridgeco_get_plug_strm_fmt(bebob->unit, addr, buf, &len, eid); |
829 | // No entries remained. | |
eb7b3a05 TS |
830 | if (err == -EINVAL && eid > 0) { |
831 | err = 0; | |
832 | break; | |
833 | } else if (err < 0) { | |
834 | dev_err(&bebob->unit->device, | |
caa27151 TS |
835 | "fail to get stream format %d for isoc %d plug %d:%d\n", |
836 | eid, plug_dir, plug_id, err); | |
eb7b3a05 TS |
837 | break; |
838 | } | |
839 | ||
840 | err = parse_stream_formation(buf, len, formations); | |
841 | if (err < 0) | |
842 | break; | |
843 | } | |
844 | ||
845 | kfree(buf); | |
846 | return err; | |
847 | } | |
848 | ||
5c6ea94f TS |
849 | static int detect_midi_ports(struct snd_bebob *bebob, |
850 | const struct snd_bebob_stream_formation *formats, | |
851 | u8 addr[AVC_BRIDGECO_ADDR_BYTES], enum avc_bridgeco_plug_dir plug_dir, | |
852 | unsigned int plug_count, unsigned int *midi_ports) | |
853 | { | |
854 | int i; | |
855 | int err = 0; | |
856 | ||
857 | *midi_ports = 0; | |
858 | ||
859 | /// Detect the number of available MIDI ports when packet has MIDI conformant data channel. | |
860 | for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; ++i) { | |
861 | if (formats[i].midi > 0) | |
862 | break; | |
863 | } | |
864 | if (i >= SND_BEBOB_STRM_FMT_ENTRIES) | |
865 | return 0; | |
866 | ||
867 | for (i = 0; i < plug_count; ++i) { | |
868 | enum avc_bridgeco_plug_type plug_type; | |
869 | unsigned int ch_count; | |
870 | ||
871 | avc_bridgeco_fill_unit_addr(addr, plug_dir, AVC_BRIDGECO_PLUG_UNIT_EXT, i); | |
872 | ||
873 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &plug_type); | |
874 | if (err < 0) { | |
875 | dev_err(&bebob->unit->device, | |
876 | "fail to get type for external %d plug %d: %d\n", | |
877 | plug_dir, i, err); | |
878 | break; | |
879 | } else if (plug_type != AVC_BRIDGECO_PLUG_TYPE_MIDI) { | |
880 | continue; | |
881 | } | |
882 | ||
883 | err = avc_bridgeco_get_plug_ch_count(bebob->unit, addr, &ch_count); | |
884 | if (err < 0) | |
885 | break; | |
886 | *midi_ports += ch_count; | |
887 | } | |
888 | ||
889 | return err; | |
890 | } | |
891 | ||
eb7b3a05 TS |
892 | static int |
893 | seek_msu_sync_input_plug(struct snd_bebob *bebob) | |
894 | { | |
895 | u8 plugs[AVC_PLUG_INFO_BUF_BYTES], addr[AVC_BRIDGECO_ADDR_BYTES]; | |
a6b598bf TS |
896 | unsigned int i; |
897 | enum avc_bridgeco_plug_type type; | |
eb7b3a05 TS |
898 | int err; |
899 | ||
900 | /* Get the number of Music Sub Unit for both direction. */ | |
901 | err = avc_general_get_plug_info(bebob->unit, 0x0c, 0x00, 0x00, plugs); | |
902 | if (err < 0) { | |
903 | dev_err(&bebob->unit->device, | |
904 | "fail to get info for MSU in/out plugs: %d\n", | |
905 | err); | |
906 | goto end; | |
907 | } | |
908 | ||
909 | /* seek destination plugs for 'MSU sync input' */ | |
910 | bebob->sync_input_plug = -1; | |
911 | for (i = 0; i < plugs[0]; i++) { | |
912 | avc_bridgeco_fill_msu_addr(addr, AVC_BRIDGECO_PLUG_DIR_IN, i); | |
913 | err = avc_bridgeco_get_plug_type(bebob->unit, addr, &type); | |
914 | if (err < 0) { | |
915 | dev_err(&bebob->unit->device, | |
916 | "fail to get type for MSU in plug %d: %d\n", | |
917 | i, err); | |
918 | goto end; | |
919 | } | |
920 | ||
921 | if (type == AVC_BRIDGECO_PLUG_TYPE_SYNC) { | |
922 | bebob->sync_input_plug = i; | |
923 | break; | |
924 | } | |
925 | } | |
926 | end: | |
927 | return err; | |
928 | } | |
929 | ||
930 | int snd_bebob_stream_discover(struct snd_bebob *bebob) | |
931 | { | |
6b9866c8 | 932 | const struct snd_bebob_clock_spec *clk_spec = bebob->spec->clock; |
eb7b3a05 | 933 | u8 plugs[AVC_PLUG_INFO_BUF_BYTES], addr[AVC_BRIDGECO_ADDR_BYTES]; |
eb7b3a05 TS |
934 | int err; |
935 | ||
936 | /* the number of plugs for isoc in/out, ext in/out */ | |
937 | err = avc_general_get_plug_info(bebob->unit, 0x1f, 0x07, 0x00, plugs); | |
938 | if (err < 0) { | |
939 | dev_err(&bebob->unit->device, | |
940 | "fail to get info for isoc/external in/out plugs: %d\n", | |
941 | err); | |
942 | goto end; | |
943 | } | |
944 | ||
945 | /* | |
946 | * This module supports at least one isoc input plug and one isoc | |
947 | * output plug. | |
948 | */ | |
949 | if ((plugs[0] == 0) || (plugs[1] == 0)) { | |
950 | err = -ENOSYS; | |
951 | goto end; | |
952 | } | |
953 | ||
caa27151 TS |
954 | err = fill_stream_formations(bebob, addr, AVC_BRIDGECO_PLUG_DIR_IN, 0, |
955 | bebob->rx_stream_formations); | |
eb7b3a05 TS |
956 | if (err < 0) |
957 | goto end; | |
958 | ||
caa27151 TS |
959 | err = fill_stream_formations(bebob, addr, AVC_BRIDGECO_PLUG_DIR_OUT, 0, |
960 | bebob->tx_stream_formations); | |
eb7b3a05 TS |
961 | if (err < 0) |
962 | goto end; | |
963 | ||
5c6ea94f TS |
964 | err = detect_midi_ports(bebob, bebob->rx_stream_formations, addr, AVC_BRIDGECO_PLUG_DIR_IN, |
965 | plugs[2], &bebob->midi_input_ports); | |
966 | if (err < 0) | |
967 | goto end; | |
eb7b3a05 | 968 | |
5c6ea94f TS |
969 | err = detect_midi_ports(bebob, bebob->tx_stream_formations, addr, AVC_BRIDGECO_PLUG_DIR_OUT, |
970 | plugs[3], &bebob->midi_output_ports); | |
971 | if (err < 0) | |
972 | goto end; | |
eb7b3a05 TS |
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 | } |