Commit | Line | Data |
---|---|---|
da607e19 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
e2786ca6 TS |
2 | /* |
3 | * oxfw_stream.c - a part of driver for OXFW970/971 based devices | |
4 | * | |
5 | * Copyright (c) 2014 Takashi Sakamoto | |
e2786ca6 TS |
6 | */ |
7 | ||
8 | #include "oxfw.h" | |
f3699e2c | 9 | #include <linux/delay.h> |
e2786ca6 | 10 | |
5cd1d3f4 | 11 | #define AVC_GENERIC_FRAME_MAXIMUM_BYTES 512 |
f3699e2c | 12 | #define CALLBACK_TIMEOUT 200 |
5cd1d3f4 TS |
13 | |
14 | /* | |
15 | * According to datasheet of Oxford Semiconductor: | |
16 | * OXFW970: 32.0/44.1/48.0/96.0 Khz, 8 audio channels I/O | |
17 | * OXFW971: 32.0/44.1/48.0/88.2/96.0/192.0 kHz, 16 audio channels I/O, MIDI I/O | |
18 | */ | |
19 | static const unsigned int oxfw_rate_table[] = { | |
20 | [0] = 32000, | |
21 | [1] = 44100, | |
22 | [2] = 48000, | |
23 | [3] = 88200, | |
24 | [4] = 96000, | |
25 | [5] = 192000, | |
26 | }; | |
27 | ||
28 | /* | |
29 | * See Table 5.7 – Sampling frequency for Multi-bit Audio | |
30 | * in AV/C Stream Format Information Specification 1.1 (Apr 2005, 1394TA) | |
31 | */ | |
32 | static const unsigned int avc_stream_rate_table[] = { | |
33 | [0] = 0x02, | |
34 | [1] = 0x03, | |
35 | [2] = 0x04, | |
36 | [3] = 0x0a, | |
37 | [4] = 0x05, | |
38 | [5] = 0x07, | |
39 | }; | |
40 | ||
b0ac0009 TS |
41 | static int set_rate(struct snd_oxfw *oxfw, unsigned int rate) |
42 | { | |
43 | int err; | |
44 | ||
45 | err = avc_general_set_sig_fmt(oxfw->unit, rate, | |
46 | AVC_GENERAL_PLUG_DIR_IN, 0); | |
47 | if (err < 0) | |
48 | goto end; | |
49 | ||
50 | if (oxfw->has_output) | |
51 | err = avc_general_set_sig_fmt(oxfw->unit, rate, | |
52 | AVC_GENERAL_PLUG_DIR_OUT, 0); | |
53 | end: | |
54 | return err; | |
55 | } | |
56 | ||
f3699e2c TS |
57 | static int set_stream_format(struct snd_oxfw *oxfw, struct amdtp_stream *s, |
58 | unsigned int rate, unsigned int pcm_channels) | |
59 | { | |
60 | u8 **formats; | |
61 | struct snd_oxfw_stream_formation formation; | |
62 | enum avc_general_plug_dir dir; | |
5580ba7b DC |
63 | unsigned int len; |
64 | int i, err; | |
f3699e2c | 65 | |
b0ac0009 TS |
66 | if (s == &oxfw->tx_stream) { |
67 | formats = oxfw->tx_stream_formats; | |
68 | dir = AVC_GENERAL_PLUG_DIR_OUT; | |
69 | } else { | |
70 | formats = oxfw->rx_stream_formats; | |
71 | dir = AVC_GENERAL_PLUG_DIR_IN; | |
72 | } | |
f3699e2c TS |
73 | |
74 | /* Seek stream format for requirements. */ | |
75 | for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { | |
76 | err = snd_oxfw_stream_parse_format(formats[i], &formation); | |
77 | if (err < 0) | |
78 | return err; | |
79 | ||
80 | if ((formation.rate == rate) && (formation.pcm == pcm_channels)) | |
81 | break; | |
82 | } | |
83 | if (i == SND_OXFW_STREAM_FORMAT_ENTRIES) | |
84 | return -EINVAL; | |
85 | ||
86 | /* If assumed, just change rate. */ | |
87 | if (oxfw->assumed) | |
b0ac0009 | 88 | return set_rate(oxfw, rate); |
f3699e2c TS |
89 | |
90 | /* Calculate format length. */ | |
91 | len = 5 + formats[i][4] * 2; | |
92 | ||
93 | err = avc_stream_set_format(oxfw->unit, dir, 0, formats[i], len); | |
94 | if (err < 0) | |
95 | return err; | |
96 | ||
97 | /* Some requests just after changing format causes freezing. */ | |
98 | msleep(100); | |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
521b2e11 | 103 | static int start_stream(struct snd_oxfw *oxfw, struct amdtp_stream *stream) |
e2786ca6 | 104 | { |
f3699e2c | 105 | struct cmp_connection *conn; |
f3699e2c | 106 | int err; |
e2786ca6 | 107 | |
0356ce3a | 108 | if (stream == &oxfw->rx_stream) |
b0ac0009 | 109 | conn = &oxfw->in_conn; |
0356ce3a | 110 | else |
b0ac0009 | 111 | conn = &oxfw->out_conn; |
e2786ca6 | 112 | |
7bc93821 | 113 | err = cmp_connection_establish(conn); |
e2786ca6 | 114 | if (err < 0) |
e34244dd | 115 | return err; |
e2786ca6 | 116 | |
ac5d7786 TS |
117 | err = amdtp_domain_add_stream(&oxfw->domain, stream, |
118 | conn->resources.channel, conn->speed); | |
f3699e2c TS |
119 | if (err < 0) { |
120 | cmp_connection_break(conn); | |
e34244dd | 121 | return err; |
f3699e2c TS |
122 | } |
123 | ||
e34244dd | 124 | return 0; |
f3699e2c TS |
125 | } |
126 | ||
b0ac0009 TS |
127 | static int check_connection_used_by_others(struct snd_oxfw *oxfw, |
128 | struct amdtp_stream *stream) | |
f3699e2c | 129 | { |
b0ac0009 TS |
130 | struct cmp_connection *conn; |
131 | bool used; | |
132 | int err; | |
133 | ||
134 | if (stream == &oxfw->tx_stream) | |
135 | conn = &oxfw->out_conn; | |
136 | else | |
137 | conn = &oxfw->in_conn; | |
138 | ||
139 | err = cmp_connection_check_used(conn, &used); | |
140 | if ((err >= 0) && used && !amdtp_stream_running(stream)) { | |
141 | dev_err(&oxfw->unit->device, | |
142 | "Connection established by others: %cPCR[%d]\n", | |
143 | (conn->direction == CMP_OUTPUT) ? 'o' : 'i', | |
144 | conn->pcr_index); | |
145 | err = -EBUSY; | |
146 | } | |
147 | ||
148 | return err; | |
149 | } | |
150 | ||
779f0dba | 151 | static int init_stream(struct snd_oxfw *oxfw, struct amdtp_stream *stream) |
b0ac0009 TS |
152 | { |
153 | struct cmp_connection *conn; | |
154 | enum cmp_direction c_dir; | |
155 | enum amdtp_stream_direction s_dir; | |
156 | int err; | |
157 | ||
158 | if (stream == &oxfw->tx_stream) { | |
159 | conn = &oxfw->out_conn; | |
160 | c_dir = CMP_OUTPUT; | |
161 | s_dir = AMDTP_IN_STREAM; | |
162 | } else { | |
163 | conn = &oxfw->in_conn; | |
164 | c_dir = CMP_INPUT; | |
165 | s_dir = AMDTP_OUT_STREAM; | |
166 | } | |
167 | ||
168 | err = cmp_connection_init(conn, oxfw->unit, c_dir, 0); | |
169 | if (err < 0) | |
779f0dba | 170 | return err; |
b0ac0009 | 171 | |
5955815e | 172 | err = amdtp_am824_init(stream, oxfw->unit, s_dir, CIP_NONBLOCKING); |
b0ac0009 | 173 | if (err < 0) { |
b0ac0009 | 174 | cmp_connection_destroy(conn); |
779f0dba | 175 | return err; |
b0ac0009 TS |
176 | } |
177 | ||
a2064710 TS |
178 | /* |
179 | * OXFW starts to transmit packets with non-zero dbc. | |
180 | * OXFW postpone transferring packets till handling any asynchronous | |
181 | * packets. As a result, next isochronous packet includes more data | |
182 | * blocks than IEC 61883-6 defines. | |
183 | */ | |
13f3a46d | 184 | if (stream == &oxfw->tx_stream) { |
62f00e40 | 185 | oxfw->tx_stream.flags |= CIP_JUMBO_PAYLOAD; |
13f3a46d TS |
186 | if (oxfw->wrong_dbs) |
187 | oxfw->tx_stream.flags |= CIP_WRONG_DBS; | |
188 | } | |
779f0dba TS |
189 | |
190 | return 0; | |
b0ac0009 TS |
191 | } |
192 | ||
0356ce3a TS |
193 | static int keep_resources(struct snd_oxfw *oxfw, struct amdtp_stream *stream) |
194 | { | |
195 | enum avc_general_plug_dir dir; | |
196 | u8 **formats; | |
197 | struct snd_oxfw_stream_formation formation; | |
7bc93821 | 198 | struct cmp_connection *conn; |
0356ce3a TS |
199 | int i; |
200 | int err; | |
201 | ||
202 | if (stream == &oxfw->rx_stream) { | |
203 | dir = AVC_GENERAL_PLUG_DIR_IN; | |
204 | formats = oxfw->rx_stream_formats; | |
7bc93821 | 205 | conn = &oxfw->in_conn; |
0356ce3a TS |
206 | } else { |
207 | dir = AVC_GENERAL_PLUG_DIR_OUT; | |
208 | formats = oxfw->tx_stream_formats; | |
7bc93821 | 209 | conn = &oxfw->out_conn; |
0356ce3a TS |
210 | } |
211 | ||
212 | err = snd_oxfw_stream_get_current_formation(oxfw, dir, &formation); | |
213 | if (err < 0) | |
214 | return err; | |
215 | ||
216 | for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { | |
217 | struct snd_oxfw_stream_formation fmt; | |
218 | ||
219 | if (formats[i] == NULL) | |
220 | break; | |
221 | ||
222 | err = snd_oxfw_stream_parse_format(formats[i], &fmt); | |
223 | if (err < 0) | |
224 | return err; | |
225 | ||
226 | if (fmt.rate == formation.rate && fmt.pcm == formation.pcm && | |
227 | fmt.midi == formation.midi) | |
228 | break; | |
229 | } | |
230 | if (i == SND_OXFW_STREAM_FORMAT_ENTRIES) | |
231 | return -EINVAL; | |
232 | ||
233 | // The stream should have one pcm channels at least. | |
234 | if (formation.pcm == 0) | |
235 | return -EINVAL; | |
236 | ||
7bc93821 | 237 | err = amdtp_am824_set_parameters(stream, formation.rate, formation.pcm, |
0356ce3a | 238 | formation.midi * 8, false); |
7bc93821 TS |
239 | if (err < 0) |
240 | return err; | |
241 | ||
242 | return cmp_connection_reserve(conn, amdtp_stream_get_max_payload(stream)); | |
0356ce3a TS |
243 | } |
244 | ||
4f380d00 TS |
245 | int snd_oxfw_stream_reserve_duplex(struct snd_oxfw *oxfw, |
246 | struct amdtp_stream *stream, | |
247 | unsigned int rate, unsigned int pcm_channels) | |
b0ac0009 | 248 | { |
f3699e2c | 249 | struct snd_oxfw_stream_formation formation; |
b0ac0009 | 250 | enum avc_general_plug_dir dir; |
4f380d00 | 251 | int err; |
b0ac0009 | 252 | |
20358d44 TS |
253 | // Considering JACK/FFADO streaming: |
254 | // TODO: This can be removed hwdep functionality becomes popular. | |
255 | err = check_connection_used_by_others(oxfw, &oxfw->rx_stream); | |
256 | if (err < 0) | |
257 | return err; | |
258 | if (oxfw->has_output) { | |
259 | err = check_connection_used_by_others(oxfw, &oxfw->tx_stream); | |
260 | if (err < 0) | |
261 | return err; | |
b0ac0009 TS |
262 | } |
263 | ||
20358d44 TS |
264 | if (stream == &oxfw->tx_stream) |
265 | dir = AVC_GENERAL_PLUG_DIR_OUT; | |
266 | else | |
267 | dir = AVC_GENERAL_PLUG_DIR_IN; | |
b0ac0009 | 268 | |
b0ac0009 | 269 | err = snd_oxfw_stream_get_current_formation(oxfw, dir, &formation); |
e2786ca6 | 270 | if (err < 0) |
20358d44 | 271 | return err; |
4f380d00 | 272 | if (rate == 0) { |
05588d34 | 273 | rate = formation.rate; |
05588d34 | 274 | pcm_channels = formation.pcm; |
4f380d00 TS |
275 | } |
276 | if (formation.rate != rate || formation.pcm != pcm_channels) { | |
ac5d7786 TS |
277 | amdtp_domain_stop(&oxfw->domain); |
278 | ||
e34244dd | 279 | cmp_connection_break(&oxfw->in_conn); |
3f2ce83d | 280 | cmp_connection_release(&oxfw->in_conn); |
e34244dd TS |
281 | |
282 | if (oxfw->has_output) { | |
e34244dd | 283 | cmp_connection_break(&oxfw->out_conn); |
3f2ce83d | 284 | cmp_connection_release(&oxfw->out_conn); |
e34244dd | 285 | } |
4f380d00 | 286 | } |
f3699e2c | 287 | |
4f380d00 TS |
288 | if (oxfw->substreams_count == 0 || |
289 | formation.rate != rate || formation.pcm != pcm_channels) { | |
b0ac0009 | 290 | err = set_stream_format(oxfw, stream, rate, pcm_channels); |
f3699e2c TS |
291 | if (err < 0) { |
292 | dev_err(&oxfw->unit->device, | |
293 | "fail to set stream format: %d\n", err); | |
20358d44 | 294 | return err; |
f3699e2c | 295 | } |
0356ce3a TS |
296 | |
297 | err = keep_resources(oxfw, &oxfw->rx_stream); | |
298 | if (err < 0) | |
299 | return err; | |
300 | ||
301 | if (oxfw->has_output) { | |
302 | err = keep_resources(oxfw, &oxfw->tx_stream); | |
7bc93821 TS |
303 | if (err < 0) { |
304 | cmp_connection_release(&oxfw->in_conn); | |
0356ce3a | 305 | return err; |
7bc93821 | 306 | } |
0356ce3a | 307 | } |
20358d44 | 308 | } |
b0ac0009 | 309 | |
4f380d00 TS |
310 | return 0; |
311 | } | |
312 | ||
313 | int snd_oxfw_stream_start_duplex(struct snd_oxfw *oxfw) | |
314 | { | |
315 | int err; | |
316 | ||
317 | if (oxfw->substreams_count == 0) | |
318 | return -EIO; | |
319 | ||
320 | if (amdtp_streaming_error(&oxfw->rx_stream) || | |
321 | amdtp_streaming_error(&oxfw->tx_stream)) { | |
ac5d7786 | 322 | amdtp_domain_stop(&oxfw->domain); |
4f380d00 | 323 | |
ac5d7786 TS |
324 | cmp_connection_break(&oxfw->in_conn); |
325 | if (oxfw->has_output) | |
4f380d00 | 326 | cmp_connection_break(&oxfw->out_conn); |
4f380d00 TS |
327 | } |
328 | ||
20358d44 TS |
329 | if (!amdtp_stream_running(&oxfw->rx_stream)) { |
330 | err = start_stream(oxfw, &oxfw->rx_stream); | |
331 | if (err < 0) { | |
332 | dev_err(&oxfw->unit->device, | |
ac5d7786 | 333 | "fail to prepare rx stream: %d\n", err); |
20358d44 TS |
334 | goto error; |
335 | } | |
20358d44 | 336 | |
ac5d7786 TS |
337 | if (oxfw->has_output && |
338 | !amdtp_stream_running(&oxfw->tx_stream)) { | |
20358d44 | 339 | err = start_stream(oxfw, &oxfw->tx_stream); |
b0ac0009 TS |
340 | if (err < 0) { |
341 | dev_err(&oxfw->unit->device, | |
ac5d7786 | 342 | "fail to prepare tx stream: %d\n", err); |
20358d44 | 343 | goto error; |
b0ac0009 TS |
344 | } |
345 | } | |
ac5d7786 TS |
346 | |
347 | err = amdtp_domain_start(&oxfw->domain); | |
348 | if (err < 0) | |
349 | goto error; | |
350 | ||
351 | // Wait first packet. | |
352 | if (!amdtp_stream_wait_callback(&oxfw->rx_stream, | |
ac5d7786 TS |
353 | CALLBACK_TIMEOUT)) { |
354 | err = -ETIMEDOUT; | |
355 | goto error; | |
356 | } | |
357 | ||
4c098dab TS |
358 | if (oxfw->has_output) { |
359 | if (!amdtp_stream_wait_callback(&oxfw->tx_stream, | |
360 | CALLBACK_TIMEOUT)) { | |
361 | err = -ETIMEDOUT; | |
362 | goto error; | |
363 | } | |
364 | } | |
f3699e2c TS |
365 | } |
366 | ||
20358d44 TS |
367 | return 0; |
368 | error: | |
ac5d7786 TS |
369 | amdtp_domain_stop(&oxfw->domain); |
370 | ||
20358d44 | 371 | cmp_connection_break(&oxfw->in_conn); |
ac5d7786 | 372 | if (oxfw->has_output) |
20358d44 | 373 | cmp_connection_break(&oxfw->out_conn); |
ac5d7786 | 374 | |
e2786ca6 TS |
375 | return err; |
376 | } | |
377 | ||
779f0dba | 378 | void snd_oxfw_stream_stop_duplex(struct snd_oxfw *oxfw) |
e2786ca6 | 379 | { |
4a0a0472 | 380 | if (oxfw->substreams_count == 0) { |
ac5d7786 TS |
381 | amdtp_domain_stop(&oxfw->domain); |
382 | ||
e34244dd | 383 | cmp_connection_break(&oxfw->in_conn); |
7bc93821 | 384 | cmp_connection_release(&oxfw->in_conn); |
b0ac0009 | 385 | |
e34244dd | 386 | if (oxfw->has_output) { |
e34244dd | 387 | cmp_connection_break(&oxfw->out_conn); |
7bc93821 | 388 | cmp_connection_release(&oxfw->out_conn); |
e34244dd | 389 | } |
20358d44 | 390 | } |
e2786ca6 TS |
391 | } |
392 | ||
779f0dba | 393 | static void destroy_stream(struct snd_oxfw *oxfw, struct amdtp_stream *stream) |
e2786ca6 | 394 | { |
b0ac0009 TS |
395 | struct cmp_connection *conn; |
396 | ||
397 | if (stream == &oxfw->tx_stream) | |
398 | conn = &oxfw->out_conn; | |
399 | else | |
400 | conn = &oxfw->in_conn; | |
e2786ca6 | 401 | |
b0ac0009 TS |
402 | amdtp_stream_destroy(stream); |
403 | cmp_connection_destroy(conn); | |
e2786ca6 TS |
404 | } |
405 | ||
779f0dba TS |
406 | int snd_oxfw_stream_init_duplex(struct snd_oxfw *oxfw) |
407 | { | |
408 | int err; | |
409 | ||
410 | err = init_stream(oxfw, &oxfw->rx_stream); | |
411 | if (err < 0) | |
412 | return err; | |
413 | ||
414 | if (oxfw->has_output) { | |
415 | err = init_stream(oxfw, &oxfw->tx_stream); | |
416 | if (err < 0) { | |
417 | destroy_stream(oxfw, &oxfw->rx_stream); | |
418 | return err; | |
419 | } | |
420 | } | |
421 | ||
ac5d7786 TS |
422 | err = amdtp_domain_init(&oxfw->domain); |
423 | if (err < 0) { | |
424 | destroy_stream(oxfw, &oxfw->rx_stream); | |
425 | if (oxfw->has_output) | |
426 | destroy_stream(oxfw, &oxfw->tx_stream); | |
427 | } | |
428 | ||
429 | return err; | |
779f0dba TS |
430 | } |
431 | ||
432 | // This function should be called before starting the stream or after stopping | |
433 | // the streams. | |
434 | void snd_oxfw_stream_destroy_duplex(struct snd_oxfw *oxfw) | |
435 | { | |
ac5d7786 TS |
436 | amdtp_domain_destroy(&oxfw->domain); |
437 | ||
779f0dba TS |
438 | destroy_stream(oxfw, &oxfw->rx_stream); |
439 | ||
440 | if (oxfw->has_output) | |
441 | destroy_stream(oxfw, &oxfw->tx_stream); | |
442 | } | |
443 | ||
444 | void snd_oxfw_stream_update_duplex(struct snd_oxfw *oxfw) | |
e2786ca6 | 445 | { |
ac5d7786 TS |
446 | amdtp_domain_stop(&oxfw->domain); |
447 | ||
e34244dd | 448 | cmp_connection_break(&oxfw->in_conn); |
b0ac0009 | 449 | |
e34244dd TS |
450 | amdtp_stream_pcm_abort(&oxfw->rx_stream); |
451 | ||
452 | if (oxfw->has_output) { | |
e34244dd TS |
453 | cmp_connection_break(&oxfw->out_conn); |
454 | ||
455 | amdtp_stream_pcm_abort(&oxfw->tx_stream); | |
456 | } | |
e2786ca6 | 457 | } |
5cd1d3f4 | 458 | |
3c96101f TS |
459 | int snd_oxfw_stream_get_current_formation(struct snd_oxfw *oxfw, |
460 | enum avc_general_plug_dir dir, | |
461 | struct snd_oxfw_stream_formation *formation) | |
462 | { | |
463 | u8 *format; | |
464 | unsigned int len; | |
465 | int err; | |
466 | ||
467 | len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; | |
468 | format = kmalloc(len, GFP_KERNEL); | |
469 | if (format == NULL) | |
470 | return -ENOMEM; | |
471 | ||
472 | err = avc_stream_get_format_single(oxfw->unit, dir, 0, format, &len); | |
473 | if (err < 0) | |
474 | goto end; | |
475 | if (len < 3) { | |
476 | err = -EIO; | |
477 | goto end; | |
478 | } | |
479 | ||
480 | err = snd_oxfw_stream_parse_format(format, formation); | |
481 | end: | |
482 | kfree(format); | |
483 | return err; | |
484 | } | |
485 | ||
5cd1d3f4 TS |
486 | /* |
487 | * See Table 6.16 - AM824 Stream Format | |
488 | * Figure 6.19 - format_information field for AM824 Compound | |
489 | * in AV/C Stream Format Information Specification 1.1 (Apr 2005, 1394TA) | |
490 | * Also 'Clause 12 AM824 sequence adaption layers' in IEC 61883-6:2005 | |
491 | */ | |
492 | int snd_oxfw_stream_parse_format(u8 *format, | |
493 | struct snd_oxfw_stream_formation *formation) | |
494 | { | |
495 | unsigned int i, e, channels, type; | |
496 | ||
497 | memset(formation, 0, sizeof(struct snd_oxfw_stream_formation)); | |
498 | ||
499 | /* | |
500 | * this module can support a hierarchy combination that: | |
501 | * Root: Audio and Music (0x90) | |
502 | * Level 1: AM824 Compound (0x40) | |
503 | */ | |
504 | if ((format[0] != 0x90) || (format[1] != 0x40)) | |
505 | return -ENOSYS; | |
506 | ||
507 | /* check the sampling rate */ | |
508 | for (i = 0; i < ARRAY_SIZE(avc_stream_rate_table); i++) { | |
509 | if (format[2] == avc_stream_rate_table[i]) | |
510 | break; | |
511 | } | |
512 | if (i == ARRAY_SIZE(avc_stream_rate_table)) | |
513 | return -ENOSYS; | |
514 | ||
515 | formation->rate = oxfw_rate_table[i]; | |
516 | ||
517 | for (e = 0; e < format[4]; e++) { | |
518 | channels = format[5 + e * 2]; | |
519 | type = format[6 + e * 2]; | |
520 | ||
521 | switch (type) { | |
522 | /* IEC 60958 Conformant, currently handled as MBLA */ | |
523 | case 0x00: | |
524 | /* Multi Bit Linear Audio (Raw) */ | |
525 | case 0x06: | |
526 | formation->pcm += channels; | |
527 | break; | |
528 | /* MIDI Conformant */ | |
529 | case 0x0d: | |
530 | formation->midi = channels; | |
531 | break; | |
532 | /* IEC 61937-3 to 7 */ | |
533 | case 0x01: | |
534 | case 0x02: | |
535 | case 0x03: | |
536 | case 0x04: | |
537 | case 0x05: | |
538 | /* Multi Bit Linear Audio */ | |
539 | case 0x07: /* DVD-Audio */ | |
540 | case 0x0c: /* High Precision */ | |
541 | /* One Bit Audio */ | |
542 | case 0x08: /* (Plain) Raw */ | |
543 | case 0x09: /* (Plain) SACD */ | |
544 | case 0x0a: /* (Encoded) Raw */ | |
545 | case 0x0b: /* (Encoded) SACD */ | |
546 | /* SMPTE Time-Code conformant */ | |
547 | case 0x0e: | |
548 | /* Sample Count */ | |
549 | case 0x0f: | |
550 | /* Anciliary Data */ | |
551 | case 0x10: | |
552 | /* Synchronization Stream (Stereo Raw audio) */ | |
553 | case 0x40: | |
554 | /* Don't care */ | |
555 | case 0xff: | |
556 | default: | |
557 | return -ENOSYS; /* not supported */ | |
558 | } | |
559 | } | |
560 | ||
49c7b3fc TS |
561 | if (formation->pcm > AM824_MAX_CHANNELS_FOR_PCM || |
562 | formation->midi > AM824_MAX_CHANNELS_FOR_MIDI) | |
5cd1d3f4 TS |
563 | return -ENOSYS; |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | static int | |
569 | assume_stream_formats(struct snd_oxfw *oxfw, enum avc_general_plug_dir dir, | |
570 | unsigned int pid, u8 *buf, unsigned int *len, | |
571 | u8 **formats) | |
572 | { | |
573 | struct snd_oxfw_stream_formation formation; | |
574 | unsigned int i, eid; | |
575 | int err; | |
576 | ||
577 | /* get format at current sampling rate */ | |
578 | err = avc_stream_get_format_single(oxfw->unit, dir, pid, buf, len); | |
579 | if (err < 0) { | |
580 | dev_err(&oxfw->unit->device, | |
581 | "fail to get current stream format for isoc %s plug %d:%d\n", | |
582 | (dir == AVC_GENERAL_PLUG_DIR_IN) ? "in" : "out", | |
583 | pid, err); | |
584 | goto end; | |
585 | } | |
586 | ||
587 | /* parse and set stream format */ | |
588 | eid = 0; | |
589 | err = snd_oxfw_stream_parse_format(buf, &formation); | |
590 | if (err < 0) | |
591 | goto end; | |
592 | ||
cd3b7116 TS |
593 | formats[eid] = devm_kmemdup(&oxfw->card->card_dev, buf, *len, |
594 | GFP_KERNEL); | |
595 | if (!formats[eid]) { | |
5cd1d3f4 TS |
596 | err = -ENOMEM; |
597 | goto end; | |
598 | } | |
5cd1d3f4 TS |
599 | |
600 | /* apply the format for each available sampling rate */ | |
601 | for (i = 0; i < ARRAY_SIZE(oxfw_rate_table); i++) { | |
602 | if (formation.rate == oxfw_rate_table[i]) | |
603 | continue; | |
604 | ||
605 | err = avc_general_inquiry_sig_fmt(oxfw->unit, | |
606 | oxfw_rate_table[i], | |
607 | dir, pid); | |
608 | if (err < 0) | |
609 | continue; | |
610 | ||
611 | eid++; | |
cd3b7116 TS |
612 | formats[eid] = devm_kmemdup(&oxfw->card->card_dev, buf, *len, |
613 | GFP_KERNEL); | |
5cd1d3f4 TS |
614 | if (formats[eid] == NULL) { |
615 | err = -ENOMEM; | |
616 | goto end; | |
617 | } | |
5cd1d3f4 TS |
618 | formats[eid][2] = avc_stream_rate_table[i]; |
619 | } | |
620 | ||
621 | err = 0; | |
622 | oxfw->assumed = true; | |
623 | end: | |
624 | return err; | |
625 | } | |
626 | ||
627 | static int fill_stream_formats(struct snd_oxfw *oxfw, | |
628 | enum avc_general_plug_dir dir, | |
629 | unsigned short pid) | |
630 | { | |
631 | u8 *buf, **formats; | |
632 | unsigned int len, eid = 0; | |
633 | struct snd_oxfw_stream_formation dummy; | |
634 | int err; | |
635 | ||
636 | buf = kmalloc(AVC_GENERIC_FRAME_MAXIMUM_BYTES, GFP_KERNEL); | |
637 | if (buf == NULL) | |
638 | return -ENOMEM; | |
639 | ||
b0ac0009 TS |
640 | if (dir == AVC_GENERAL_PLUG_DIR_OUT) |
641 | formats = oxfw->tx_stream_formats; | |
642 | else | |
643 | formats = oxfw->rx_stream_formats; | |
5cd1d3f4 TS |
644 | |
645 | /* get first entry */ | |
646 | len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; | |
647 | err = avc_stream_get_format_list(oxfw->unit, dir, 0, buf, &len, 0); | |
648 | if (err == -ENOSYS) { | |
649 | /* LIST subfunction is not implemented */ | |
650 | len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; | |
651 | err = assume_stream_formats(oxfw, dir, pid, buf, &len, | |
652 | formats); | |
653 | goto end; | |
654 | } else if (err < 0) { | |
655 | dev_err(&oxfw->unit->device, | |
656 | "fail to get stream format %d for isoc %s plug %d:%d\n", | |
657 | eid, (dir == AVC_GENERAL_PLUG_DIR_IN) ? "in" : "out", | |
658 | pid, err); | |
659 | goto end; | |
660 | } | |
661 | ||
662 | /* LIST subfunction is implemented */ | |
663 | while (eid < SND_OXFW_STREAM_FORMAT_ENTRIES) { | |
664 | /* The format is too short. */ | |
665 | if (len < 3) { | |
666 | err = -EIO; | |
667 | break; | |
668 | } | |
669 | ||
670 | /* parse and set stream format */ | |
671 | err = snd_oxfw_stream_parse_format(buf, &dummy); | |
672 | if (err < 0) | |
673 | break; | |
674 | ||
cd3b7116 TS |
675 | formats[eid] = devm_kmemdup(&oxfw->card->card_dev, buf, len, |
676 | GFP_KERNEL); | |
677 | if (!formats[eid]) { | |
5cd1d3f4 TS |
678 | err = -ENOMEM; |
679 | break; | |
680 | } | |
5cd1d3f4 TS |
681 | |
682 | /* get next entry */ | |
683 | len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; | |
684 | err = avc_stream_get_format_list(oxfw->unit, dir, 0, | |
685 | buf, &len, ++eid); | |
686 | /* No entries remained. */ | |
687 | if (err == -EINVAL) { | |
688 | err = 0; | |
689 | break; | |
690 | } else if (err < 0) { | |
691 | dev_err(&oxfw->unit->device, | |
692 | "fail to get stream format %d for isoc %s plug %d:%d\n", | |
693 | eid, (dir == AVC_GENERAL_PLUG_DIR_IN) ? "in" : | |
694 | "out", | |
695 | pid, err); | |
696 | break; | |
697 | } | |
698 | } | |
699 | end: | |
700 | kfree(buf); | |
701 | return err; | |
702 | } | |
703 | ||
704 | int snd_oxfw_stream_discover(struct snd_oxfw *oxfw) | |
705 | { | |
706 | u8 plugs[AVC_PLUG_INFO_BUF_BYTES]; | |
32056041 TS |
707 | struct snd_oxfw_stream_formation formation; |
708 | u8 *format; | |
709 | unsigned int i; | |
5cd1d3f4 TS |
710 | int err; |
711 | ||
712 | /* the number of plugs for isoc in/out, ext in/out */ | |
713 | err = avc_general_get_plug_info(oxfw->unit, 0x1f, 0x07, 0x00, plugs); | |
714 | if (err < 0) { | |
715 | dev_err(&oxfw->unit->device, | |
716 | "fail to get info for isoc/external in/out plugs: %d\n", | |
717 | err); | |
718 | goto end; | |
b0ac0009 | 719 | } else if ((plugs[0] == 0) && (plugs[1] == 0)) { |
5cd1d3f4 TS |
720 | err = -ENOSYS; |
721 | goto end; | |
722 | } | |
723 | ||
b0ac0009 TS |
724 | /* use oPCR[0] if exists */ |
725 | if (plugs[1] > 0) { | |
726 | err = fill_stream_formats(oxfw, AVC_GENERAL_PLUG_DIR_OUT, 0); | |
727 | if (err < 0) | |
728 | goto end; | |
32056041 TS |
729 | |
730 | for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { | |
731 | format = oxfw->tx_stream_formats[i]; | |
732 | if (format == NULL) | |
733 | continue; | |
734 | err = snd_oxfw_stream_parse_format(format, &formation); | |
735 | if (err < 0) | |
736 | continue; | |
737 | ||
738 | /* Add one MIDI port. */ | |
739 | if (formation.midi > 0) | |
740 | oxfw->midi_input_ports = 1; | |
741 | } | |
742 | ||
b0ac0009 TS |
743 | oxfw->has_output = true; |
744 | } | |
745 | ||
5cd1d3f4 | 746 | /* use iPCR[0] if exists */ |
32056041 | 747 | if (plugs[0] > 0) { |
5cd1d3f4 | 748 | err = fill_stream_formats(oxfw, AVC_GENERAL_PLUG_DIR_IN, 0); |
32056041 TS |
749 | if (err < 0) |
750 | goto end; | |
751 | ||
752 | for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { | |
753 | format = oxfw->rx_stream_formats[i]; | |
754 | if (format == NULL) | |
755 | continue; | |
756 | err = snd_oxfw_stream_parse_format(format, &formation); | |
757 | if (err < 0) | |
758 | continue; | |
759 | ||
760 | /* Add one MIDI port. */ | |
761 | if (formation.midi > 0) | |
762 | oxfw->midi_output_ports = 1; | |
763 | } | |
764 | } | |
5cd1d3f4 TS |
765 | end: |
766 | return err; | |
767 | } | |
8985f4ac TS |
768 | |
769 | void snd_oxfw_stream_lock_changed(struct snd_oxfw *oxfw) | |
770 | { | |
771 | oxfw->dev_lock_changed = true; | |
772 | wake_up(&oxfw->hwdep_wait); | |
773 | } | |
774 | ||
775 | int snd_oxfw_stream_lock_try(struct snd_oxfw *oxfw) | |
776 | { | |
777 | int err; | |
778 | ||
779 | spin_lock_irq(&oxfw->lock); | |
780 | ||
781 | /* user land lock this */ | |
782 | if (oxfw->dev_lock_count < 0) { | |
783 | err = -EBUSY; | |
784 | goto end; | |
785 | } | |
786 | ||
787 | /* this is the first time */ | |
788 | if (oxfw->dev_lock_count++ == 0) | |
789 | snd_oxfw_stream_lock_changed(oxfw); | |
790 | err = 0; | |
791 | end: | |
792 | spin_unlock_irq(&oxfw->lock); | |
793 | return err; | |
794 | } | |
795 | ||
796 | void snd_oxfw_stream_lock_release(struct snd_oxfw *oxfw) | |
797 | { | |
798 | spin_lock_irq(&oxfw->lock); | |
799 | ||
800 | if (WARN_ON(oxfw->dev_lock_count <= 0)) | |
801 | goto end; | |
802 | if (--oxfw->dev_lock_count == 0) | |
803 | snd_oxfw_stream_lock_changed(oxfw); | |
804 | end: | |
805 | spin_unlock_irq(&oxfw->lock); | |
806 | } |