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, | |
1d6a722c TS |
247 | unsigned int rate, unsigned int pcm_channels, |
248 | unsigned int frames_per_period) | |
b0ac0009 | 249 | { |
f3699e2c | 250 | struct snd_oxfw_stream_formation formation; |
b0ac0009 | 251 | enum avc_general_plug_dir dir; |
4f380d00 | 252 | int err; |
b0ac0009 | 253 | |
20358d44 TS |
254 | // Considering JACK/FFADO streaming: |
255 | // TODO: This can be removed hwdep functionality becomes popular. | |
256 | err = check_connection_used_by_others(oxfw, &oxfw->rx_stream); | |
257 | if (err < 0) | |
258 | return err; | |
259 | if (oxfw->has_output) { | |
260 | err = check_connection_used_by_others(oxfw, &oxfw->tx_stream); | |
261 | if (err < 0) | |
262 | return err; | |
b0ac0009 TS |
263 | } |
264 | ||
20358d44 TS |
265 | if (stream == &oxfw->tx_stream) |
266 | dir = AVC_GENERAL_PLUG_DIR_OUT; | |
267 | else | |
268 | dir = AVC_GENERAL_PLUG_DIR_IN; | |
b0ac0009 | 269 | |
b0ac0009 | 270 | err = snd_oxfw_stream_get_current_formation(oxfw, dir, &formation); |
e2786ca6 | 271 | if (err < 0) |
20358d44 | 272 | return err; |
4f380d00 | 273 | if (rate == 0) { |
05588d34 | 274 | rate = formation.rate; |
05588d34 | 275 | pcm_channels = formation.pcm; |
4f380d00 TS |
276 | } |
277 | if (formation.rate != rate || formation.pcm != pcm_channels) { | |
ac5d7786 TS |
278 | amdtp_domain_stop(&oxfw->domain); |
279 | ||
e34244dd | 280 | cmp_connection_break(&oxfw->in_conn); |
3f2ce83d | 281 | cmp_connection_release(&oxfw->in_conn); |
e34244dd TS |
282 | |
283 | if (oxfw->has_output) { | |
e34244dd | 284 | cmp_connection_break(&oxfw->out_conn); |
3f2ce83d | 285 | cmp_connection_release(&oxfw->out_conn); |
e34244dd | 286 | } |
4f380d00 | 287 | } |
f3699e2c | 288 | |
4f380d00 TS |
289 | if (oxfw->substreams_count == 0 || |
290 | formation.rate != rate || formation.pcm != pcm_channels) { | |
b0ac0009 | 291 | err = set_stream_format(oxfw, stream, rate, pcm_channels); |
f3699e2c TS |
292 | if (err < 0) { |
293 | dev_err(&oxfw->unit->device, | |
294 | "fail to set stream format: %d\n", err); | |
20358d44 | 295 | return err; |
f3699e2c | 296 | } |
0356ce3a TS |
297 | |
298 | err = keep_resources(oxfw, &oxfw->rx_stream); | |
299 | if (err < 0) | |
300 | return err; | |
301 | ||
302 | if (oxfw->has_output) { | |
303 | err = keep_resources(oxfw, &oxfw->tx_stream); | |
7bc93821 TS |
304 | if (err < 0) { |
305 | cmp_connection_release(&oxfw->in_conn); | |
0356ce3a | 306 | return err; |
7bc93821 | 307 | } |
0356ce3a | 308 | } |
1d6a722c TS |
309 | |
310 | err = amdtp_domain_set_events_per_period(&oxfw->domain, | |
a0e02331 | 311 | frames_per_period, 0); |
1d6a722c TS |
312 | if (err < 0) { |
313 | cmp_connection_release(&oxfw->in_conn); | |
314 | if (oxfw->has_output) | |
315 | cmp_connection_release(&oxfw->out_conn); | |
316 | return err; | |
317 | } | |
20358d44 | 318 | } |
b0ac0009 | 319 | |
4f380d00 TS |
320 | return 0; |
321 | } | |
322 | ||
323 | int snd_oxfw_stream_start_duplex(struct snd_oxfw *oxfw) | |
324 | { | |
325 | int err; | |
326 | ||
327 | if (oxfw->substreams_count == 0) | |
328 | return -EIO; | |
329 | ||
330 | if (amdtp_streaming_error(&oxfw->rx_stream) || | |
331 | amdtp_streaming_error(&oxfw->tx_stream)) { | |
ac5d7786 | 332 | amdtp_domain_stop(&oxfw->domain); |
4f380d00 | 333 | |
ac5d7786 TS |
334 | cmp_connection_break(&oxfw->in_conn); |
335 | if (oxfw->has_output) | |
4f380d00 | 336 | cmp_connection_break(&oxfw->out_conn); |
4f380d00 TS |
337 | } |
338 | ||
20358d44 TS |
339 | if (!amdtp_stream_running(&oxfw->rx_stream)) { |
340 | err = start_stream(oxfw, &oxfw->rx_stream); | |
341 | if (err < 0) { | |
342 | dev_err(&oxfw->unit->device, | |
ac5d7786 | 343 | "fail to prepare rx stream: %d\n", err); |
20358d44 TS |
344 | goto error; |
345 | } | |
20358d44 | 346 | |
ac5d7786 TS |
347 | if (oxfw->has_output && |
348 | !amdtp_stream_running(&oxfw->tx_stream)) { | |
20358d44 | 349 | err = start_stream(oxfw, &oxfw->tx_stream); |
b0ac0009 TS |
350 | if (err < 0) { |
351 | dev_err(&oxfw->unit->device, | |
ac5d7786 | 352 | "fail to prepare tx stream: %d\n", err); |
20358d44 | 353 | goto error; |
b0ac0009 TS |
354 | } |
355 | } | |
ac5d7786 TS |
356 | |
357 | err = amdtp_domain_start(&oxfw->domain); | |
358 | if (err < 0) | |
359 | goto error; | |
360 | ||
361 | // Wait first packet. | |
362 | if (!amdtp_stream_wait_callback(&oxfw->rx_stream, | |
ac5d7786 TS |
363 | CALLBACK_TIMEOUT)) { |
364 | err = -ETIMEDOUT; | |
365 | goto error; | |
366 | } | |
367 | ||
4c098dab TS |
368 | if (oxfw->has_output) { |
369 | if (!amdtp_stream_wait_callback(&oxfw->tx_stream, | |
370 | CALLBACK_TIMEOUT)) { | |
371 | err = -ETIMEDOUT; | |
372 | goto error; | |
373 | } | |
374 | } | |
f3699e2c TS |
375 | } |
376 | ||
20358d44 TS |
377 | return 0; |
378 | error: | |
ac5d7786 TS |
379 | amdtp_domain_stop(&oxfw->domain); |
380 | ||
20358d44 | 381 | cmp_connection_break(&oxfw->in_conn); |
ac5d7786 | 382 | if (oxfw->has_output) |
20358d44 | 383 | cmp_connection_break(&oxfw->out_conn); |
ac5d7786 | 384 | |
e2786ca6 TS |
385 | return err; |
386 | } | |
387 | ||
779f0dba | 388 | void snd_oxfw_stream_stop_duplex(struct snd_oxfw *oxfw) |
e2786ca6 | 389 | { |
4a0a0472 | 390 | if (oxfw->substreams_count == 0) { |
ac5d7786 TS |
391 | amdtp_domain_stop(&oxfw->domain); |
392 | ||
e34244dd | 393 | cmp_connection_break(&oxfw->in_conn); |
7bc93821 | 394 | cmp_connection_release(&oxfw->in_conn); |
b0ac0009 | 395 | |
e34244dd | 396 | if (oxfw->has_output) { |
e34244dd | 397 | cmp_connection_break(&oxfw->out_conn); |
7bc93821 | 398 | cmp_connection_release(&oxfw->out_conn); |
e34244dd | 399 | } |
20358d44 | 400 | } |
e2786ca6 TS |
401 | } |
402 | ||
779f0dba | 403 | static void destroy_stream(struct snd_oxfw *oxfw, struct amdtp_stream *stream) |
e2786ca6 | 404 | { |
b0ac0009 TS |
405 | struct cmp_connection *conn; |
406 | ||
407 | if (stream == &oxfw->tx_stream) | |
408 | conn = &oxfw->out_conn; | |
409 | else | |
410 | conn = &oxfw->in_conn; | |
e2786ca6 | 411 | |
b0ac0009 TS |
412 | amdtp_stream_destroy(stream); |
413 | cmp_connection_destroy(conn); | |
e2786ca6 TS |
414 | } |
415 | ||
779f0dba TS |
416 | int snd_oxfw_stream_init_duplex(struct snd_oxfw *oxfw) |
417 | { | |
418 | int err; | |
419 | ||
420 | err = init_stream(oxfw, &oxfw->rx_stream); | |
421 | if (err < 0) | |
422 | return err; | |
423 | ||
424 | if (oxfw->has_output) { | |
425 | err = init_stream(oxfw, &oxfw->tx_stream); | |
426 | if (err < 0) { | |
427 | destroy_stream(oxfw, &oxfw->rx_stream); | |
428 | return err; | |
429 | } | |
430 | } | |
431 | ||
ac5d7786 TS |
432 | err = amdtp_domain_init(&oxfw->domain); |
433 | if (err < 0) { | |
434 | destroy_stream(oxfw, &oxfw->rx_stream); | |
435 | if (oxfw->has_output) | |
436 | destroy_stream(oxfw, &oxfw->tx_stream); | |
437 | } | |
438 | ||
439 | return err; | |
779f0dba TS |
440 | } |
441 | ||
442 | // This function should be called before starting the stream or after stopping | |
443 | // the streams. | |
444 | void snd_oxfw_stream_destroy_duplex(struct snd_oxfw *oxfw) | |
445 | { | |
ac5d7786 TS |
446 | amdtp_domain_destroy(&oxfw->domain); |
447 | ||
779f0dba TS |
448 | destroy_stream(oxfw, &oxfw->rx_stream); |
449 | ||
450 | if (oxfw->has_output) | |
451 | destroy_stream(oxfw, &oxfw->tx_stream); | |
452 | } | |
453 | ||
454 | void snd_oxfw_stream_update_duplex(struct snd_oxfw *oxfw) | |
e2786ca6 | 455 | { |
ac5d7786 TS |
456 | amdtp_domain_stop(&oxfw->domain); |
457 | ||
e34244dd | 458 | cmp_connection_break(&oxfw->in_conn); |
b0ac0009 | 459 | |
e34244dd TS |
460 | amdtp_stream_pcm_abort(&oxfw->rx_stream); |
461 | ||
462 | if (oxfw->has_output) { | |
e34244dd TS |
463 | cmp_connection_break(&oxfw->out_conn); |
464 | ||
465 | amdtp_stream_pcm_abort(&oxfw->tx_stream); | |
466 | } | |
e2786ca6 | 467 | } |
5cd1d3f4 | 468 | |
3c96101f TS |
469 | int snd_oxfw_stream_get_current_formation(struct snd_oxfw *oxfw, |
470 | enum avc_general_plug_dir dir, | |
471 | struct snd_oxfw_stream_formation *formation) | |
472 | { | |
473 | u8 *format; | |
474 | unsigned int len; | |
475 | int err; | |
476 | ||
477 | len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; | |
478 | format = kmalloc(len, GFP_KERNEL); | |
479 | if (format == NULL) | |
480 | return -ENOMEM; | |
481 | ||
482 | err = avc_stream_get_format_single(oxfw->unit, dir, 0, format, &len); | |
483 | if (err < 0) | |
484 | goto end; | |
485 | if (len < 3) { | |
486 | err = -EIO; | |
487 | goto end; | |
488 | } | |
489 | ||
490 | err = snd_oxfw_stream_parse_format(format, formation); | |
491 | end: | |
492 | kfree(format); | |
493 | return err; | |
494 | } | |
495 | ||
5cd1d3f4 TS |
496 | /* |
497 | * See Table 6.16 - AM824 Stream Format | |
498 | * Figure 6.19 - format_information field for AM824 Compound | |
499 | * in AV/C Stream Format Information Specification 1.1 (Apr 2005, 1394TA) | |
500 | * Also 'Clause 12 AM824 sequence adaption layers' in IEC 61883-6:2005 | |
501 | */ | |
502 | int snd_oxfw_stream_parse_format(u8 *format, | |
503 | struct snd_oxfw_stream_formation *formation) | |
504 | { | |
505 | unsigned int i, e, channels, type; | |
506 | ||
507 | memset(formation, 0, sizeof(struct snd_oxfw_stream_formation)); | |
508 | ||
509 | /* | |
510 | * this module can support a hierarchy combination that: | |
511 | * Root: Audio and Music (0x90) | |
512 | * Level 1: AM824 Compound (0x40) | |
513 | */ | |
514 | if ((format[0] != 0x90) || (format[1] != 0x40)) | |
515 | return -ENOSYS; | |
516 | ||
517 | /* check the sampling rate */ | |
518 | for (i = 0; i < ARRAY_SIZE(avc_stream_rate_table); i++) { | |
519 | if (format[2] == avc_stream_rate_table[i]) | |
520 | break; | |
521 | } | |
522 | if (i == ARRAY_SIZE(avc_stream_rate_table)) | |
523 | return -ENOSYS; | |
524 | ||
525 | formation->rate = oxfw_rate_table[i]; | |
526 | ||
527 | for (e = 0; e < format[4]; e++) { | |
528 | channels = format[5 + e * 2]; | |
529 | type = format[6 + e * 2]; | |
530 | ||
531 | switch (type) { | |
532 | /* IEC 60958 Conformant, currently handled as MBLA */ | |
533 | case 0x00: | |
534 | /* Multi Bit Linear Audio (Raw) */ | |
535 | case 0x06: | |
536 | formation->pcm += channels; | |
537 | break; | |
538 | /* MIDI Conformant */ | |
539 | case 0x0d: | |
540 | formation->midi = channels; | |
541 | break; | |
542 | /* IEC 61937-3 to 7 */ | |
543 | case 0x01: | |
544 | case 0x02: | |
545 | case 0x03: | |
546 | case 0x04: | |
547 | case 0x05: | |
548 | /* Multi Bit Linear Audio */ | |
549 | case 0x07: /* DVD-Audio */ | |
550 | case 0x0c: /* High Precision */ | |
551 | /* One Bit Audio */ | |
552 | case 0x08: /* (Plain) Raw */ | |
553 | case 0x09: /* (Plain) SACD */ | |
554 | case 0x0a: /* (Encoded) Raw */ | |
555 | case 0x0b: /* (Encoded) SACD */ | |
556 | /* SMPTE Time-Code conformant */ | |
557 | case 0x0e: | |
558 | /* Sample Count */ | |
559 | case 0x0f: | |
560 | /* Anciliary Data */ | |
561 | case 0x10: | |
562 | /* Synchronization Stream (Stereo Raw audio) */ | |
563 | case 0x40: | |
564 | /* Don't care */ | |
565 | case 0xff: | |
566 | default: | |
567 | return -ENOSYS; /* not supported */ | |
568 | } | |
569 | } | |
570 | ||
49c7b3fc TS |
571 | if (formation->pcm > AM824_MAX_CHANNELS_FOR_PCM || |
572 | formation->midi > AM824_MAX_CHANNELS_FOR_MIDI) | |
5cd1d3f4 TS |
573 | return -ENOSYS; |
574 | ||
575 | return 0; | |
576 | } | |
577 | ||
578 | static int | |
579 | assume_stream_formats(struct snd_oxfw *oxfw, enum avc_general_plug_dir dir, | |
580 | unsigned int pid, u8 *buf, unsigned int *len, | |
581 | u8 **formats) | |
582 | { | |
583 | struct snd_oxfw_stream_formation formation; | |
584 | unsigned int i, eid; | |
585 | int err; | |
586 | ||
587 | /* get format at current sampling rate */ | |
588 | err = avc_stream_get_format_single(oxfw->unit, dir, pid, buf, len); | |
589 | if (err < 0) { | |
590 | dev_err(&oxfw->unit->device, | |
591 | "fail to get current stream format for isoc %s plug %d:%d\n", | |
592 | (dir == AVC_GENERAL_PLUG_DIR_IN) ? "in" : "out", | |
593 | pid, err); | |
594 | goto end; | |
595 | } | |
596 | ||
597 | /* parse and set stream format */ | |
598 | eid = 0; | |
599 | err = snd_oxfw_stream_parse_format(buf, &formation); | |
600 | if (err < 0) | |
601 | goto end; | |
602 | ||
cd3b7116 TS |
603 | formats[eid] = devm_kmemdup(&oxfw->card->card_dev, buf, *len, |
604 | GFP_KERNEL); | |
605 | if (!formats[eid]) { | |
5cd1d3f4 TS |
606 | err = -ENOMEM; |
607 | goto end; | |
608 | } | |
5cd1d3f4 TS |
609 | |
610 | /* apply the format for each available sampling rate */ | |
611 | for (i = 0; i < ARRAY_SIZE(oxfw_rate_table); i++) { | |
612 | if (formation.rate == oxfw_rate_table[i]) | |
613 | continue; | |
614 | ||
615 | err = avc_general_inquiry_sig_fmt(oxfw->unit, | |
616 | oxfw_rate_table[i], | |
617 | dir, pid); | |
618 | if (err < 0) | |
619 | continue; | |
620 | ||
621 | eid++; | |
cd3b7116 TS |
622 | formats[eid] = devm_kmemdup(&oxfw->card->card_dev, buf, *len, |
623 | GFP_KERNEL); | |
5cd1d3f4 TS |
624 | if (formats[eid] == NULL) { |
625 | err = -ENOMEM; | |
626 | goto end; | |
627 | } | |
5cd1d3f4 TS |
628 | formats[eid][2] = avc_stream_rate_table[i]; |
629 | } | |
630 | ||
631 | err = 0; | |
632 | oxfw->assumed = true; | |
633 | end: | |
634 | return err; | |
635 | } | |
636 | ||
637 | static int fill_stream_formats(struct snd_oxfw *oxfw, | |
638 | enum avc_general_plug_dir dir, | |
639 | unsigned short pid) | |
640 | { | |
641 | u8 *buf, **formats; | |
642 | unsigned int len, eid = 0; | |
643 | struct snd_oxfw_stream_formation dummy; | |
644 | int err; | |
645 | ||
646 | buf = kmalloc(AVC_GENERIC_FRAME_MAXIMUM_BYTES, GFP_KERNEL); | |
647 | if (buf == NULL) | |
648 | return -ENOMEM; | |
649 | ||
b0ac0009 TS |
650 | if (dir == AVC_GENERAL_PLUG_DIR_OUT) |
651 | formats = oxfw->tx_stream_formats; | |
652 | else | |
653 | formats = oxfw->rx_stream_formats; | |
5cd1d3f4 TS |
654 | |
655 | /* get first entry */ | |
656 | len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; | |
657 | err = avc_stream_get_format_list(oxfw->unit, dir, 0, buf, &len, 0); | |
658 | if (err == -ENOSYS) { | |
659 | /* LIST subfunction is not implemented */ | |
660 | len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; | |
661 | err = assume_stream_formats(oxfw, dir, pid, buf, &len, | |
662 | formats); | |
663 | goto end; | |
664 | } else if (err < 0) { | |
665 | dev_err(&oxfw->unit->device, | |
666 | "fail to get stream format %d for isoc %s plug %d:%d\n", | |
667 | eid, (dir == AVC_GENERAL_PLUG_DIR_IN) ? "in" : "out", | |
668 | pid, err); | |
669 | goto end; | |
670 | } | |
671 | ||
672 | /* LIST subfunction is implemented */ | |
673 | while (eid < SND_OXFW_STREAM_FORMAT_ENTRIES) { | |
674 | /* The format is too short. */ | |
675 | if (len < 3) { | |
676 | err = -EIO; | |
677 | break; | |
678 | } | |
679 | ||
680 | /* parse and set stream format */ | |
681 | err = snd_oxfw_stream_parse_format(buf, &dummy); | |
682 | if (err < 0) | |
683 | break; | |
684 | ||
cd3b7116 TS |
685 | formats[eid] = devm_kmemdup(&oxfw->card->card_dev, buf, len, |
686 | GFP_KERNEL); | |
687 | if (!formats[eid]) { | |
5cd1d3f4 TS |
688 | err = -ENOMEM; |
689 | break; | |
690 | } | |
5cd1d3f4 TS |
691 | |
692 | /* get next entry */ | |
693 | len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; | |
694 | err = avc_stream_get_format_list(oxfw->unit, dir, 0, | |
695 | buf, &len, ++eid); | |
696 | /* No entries remained. */ | |
697 | if (err == -EINVAL) { | |
698 | err = 0; | |
699 | break; | |
700 | } else if (err < 0) { | |
701 | dev_err(&oxfw->unit->device, | |
702 | "fail to get stream format %d for isoc %s plug %d:%d\n", | |
703 | eid, (dir == AVC_GENERAL_PLUG_DIR_IN) ? "in" : | |
704 | "out", | |
705 | pid, err); | |
706 | break; | |
707 | } | |
708 | } | |
709 | end: | |
710 | kfree(buf); | |
711 | return err; | |
712 | } | |
713 | ||
714 | int snd_oxfw_stream_discover(struct snd_oxfw *oxfw) | |
715 | { | |
716 | u8 plugs[AVC_PLUG_INFO_BUF_BYTES]; | |
32056041 TS |
717 | struct snd_oxfw_stream_formation formation; |
718 | u8 *format; | |
719 | unsigned int i; | |
5cd1d3f4 TS |
720 | int err; |
721 | ||
722 | /* the number of plugs for isoc in/out, ext in/out */ | |
723 | err = avc_general_get_plug_info(oxfw->unit, 0x1f, 0x07, 0x00, plugs); | |
724 | if (err < 0) { | |
725 | dev_err(&oxfw->unit->device, | |
726 | "fail to get info for isoc/external in/out plugs: %d\n", | |
727 | err); | |
728 | goto end; | |
b0ac0009 | 729 | } else if ((plugs[0] == 0) && (plugs[1] == 0)) { |
5cd1d3f4 TS |
730 | err = -ENOSYS; |
731 | goto end; | |
732 | } | |
733 | ||
b0ac0009 TS |
734 | /* use oPCR[0] if exists */ |
735 | if (plugs[1] > 0) { | |
736 | err = fill_stream_formats(oxfw, AVC_GENERAL_PLUG_DIR_OUT, 0); | |
737 | if (err < 0) | |
738 | goto end; | |
32056041 TS |
739 | |
740 | for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { | |
741 | format = oxfw->tx_stream_formats[i]; | |
742 | if (format == NULL) | |
743 | continue; | |
744 | err = snd_oxfw_stream_parse_format(format, &formation); | |
745 | if (err < 0) | |
746 | continue; | |
747 | ||
748 | /* Add one MIDI port. */ | |
749 | if (formation.midi > 0) | |
750 | oxfw->midi_input_ports = 1; | |
751 | } | |
752 | ||
b0ac0009 TS |
753 | oxfw->has_output = true; |
754 | } | |
755 | ||
5cd1d3f4 | 756 | /* use iPCR[0] if exists */ |
32056041 | 757 | if (plugs[0] > 0) { |
5cd1d3f4 | 758 | err = fill_stream_formats(oxfw, AVC_GENERAL_PLUG_DIR_IN, 0); |
32056041 TS |
759 | if (err < 0) |
760 | goto end; | |
761 | ||
762 | for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { | |
763 | format = oxfw->rx_stream_formats[i]; | |
764 | if (format == NULL) | |
765 | continue; | |
766 | err = snd_oxfw_stream_parse_format(format, &formation); | |
767 | if (err < 0) | |
768 | continue; | |
769 | ||
770 | /* Add one MIDI port. */ | |
771 | if (formation.midi > 0) | |
772 | oxfw->midi_output_ports = 1; | |
773 | } | |
774 | } | |
5cd1d3f4 TS |
775 | end: |
776 | return err; | |
777 | } | |
8985f4ac TS |
778 | |
779 | void snd_oxfw_stream_lock_changed(struct snd_oxfw *oxfw) | |
780 | { | |
781 | oxfw->dev_lock_changed = true; | |
782 | wake_up(&oxfw->hwdep_wait); | |
783 | } | |
784 | ||
785 | int snd_oxfw_stream_lock_try(struct snd_oxfw *oxfw) | |
786 | { | |
787 | int err; | |
788 | ||
789 | spin_lock_irq(&oxfw->lock); | |
790 | ||
791 | /* user land lock this */ | |
792 | if (oxfw->dev_lock_count < 0) { | |
793 | err = -EBUSY; | |
794 | goto end; | |
795 | } | |
796 | ||
797 | /* this is the first time */ | |
798 | if (oxfw->dev_lock_count++ == 0) | |
799 | snd_oxfw_stream_lock_changed(oxfw); | |
800 | err = 0; | |
801 | end: | |
802 | spin_unlock_irq(&oxfw->lock); | |
803 | return err; | |
804 | } | |
805 | ||
806 | void snd_oxfw_stream_lock_release(struct snd_oxfw *oxfw) | |
807 | { | |
808 | spin_lock_irq(&oxfw->lock); | |
809 | ||
810 | if (WARN_ON(oxfw->dev_lock_count <= 0)) | |
811 | goto end; | |
812 | if (--oxfw->dev_lock_count == 0) | |
813 | snd_oxfw_stream_lock_changed(oxfw); | |
814 | end: | |
815 | spin_unlock_irq(&oxfw->lock); | |
816 | } |