1 | /* $NetBSD: pad.c,v 1.26 2016/10/15 07:08:06 nat Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2007 Jared D. McNeill <jmcneill@invisible.ca> |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
17 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
18 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
19 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
26 | * POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
28 | |
29 | #include <sys/cdefs.h> |
30 | __KERNEL_RCSID(0, "$NetBSD: pad.c,v 1.26 2016/10/15 07:08:06 nat Exp $" ); |
31 | |
32 | #include <sys/types.h> |
33 | #include <sys/param.h> |
34 | #include <sys/conf.h> |
35 | #include <sys/buf.h> |
36 | #include <sys/kmem.h> |
37 | #include <sys/kernel.h> |
38 | #include <sys/device.h> |
39 | #include <sys/proc.h> |
40 | #include <sys/condvar.h> |
41 | #include <sys/select.h> |
42 | #include <sys/audioio.h> |
43 | #include <sys/vnode.h> |
44 | #include <sys/module.h> |
45 | #include <sys/atomic.h> |
46 | #include <sys/time.h> |
47 | |
48 | #include <dev/audio_if.h> |
49 | #include <dev/audiovar.h> |
50 | #include <dev/auconv.h> |
51 | #include <dev/auvolconv.h> |
52 | |
53 | #include <dev/pad/padvar.h> |
54 | |
55 | #define PADUNIT(x) minor(x) |
56 | |
57 | extern struct cfdriver pad_cd; |
58 | |
59 | typedef struct pad_block { |
60 | uint8_t *pb_ptr; |
61 | int pb_len; |
62 | } pad_block_t; |
63 | |
64 | enum { |
65 | PAD_OUTPUT_CLASS, |
66 | PAD_INPUT_CLASS, |
67 | PAD_OUTPUT_MASTER_VOLUME, |
68 | PAD_INPUT_DAC_VOLUME, |
69 | PAD_ENUM_LAST, |
70 | }; |
71 | |
72 | static int pad_match(device_t, cfdata_t, void *); |
73 | static void pad_attach(device_t, device_t, void *); |
74 | static int pad_detach(device_t, int); |
75 | static void pad_childdet(device_t, device_t); |
76 | |
77 | static int pad_audio_open(void *, int); |
78 | static int pad_query_encoding(void *, struct audio_encoding *); |
79 | static int pad_set_params(void *, int, int, |
80 | audio_params_t *, audio_params_t *, |
81 | stream_filter_list_t *, stream_filter_list_t *); |
82 | static int pad_start_output(void *, void *, int, |
83 | void (*)(void *), void *); |
84 | static int pad_start_input(void *, void *, int, |
85 | void (*)(void *), void *); |
86 | static int pad_halt_output(void *); |
87 | static int pad_halt_input(void *); |
88 | static int pad_getdev(void *, struct audio_device *); |
89 | static int pad_set_port(void *, mixer_ctrl_t *); |
90 | static int pad_get_port(void *, mixer_ctrl_t *); |
91 | static int pad_query_devinfo(void *, mixer_devinfo_t *); |
92 | static int pad_get_props(void *); |
93 | static int pad_round_blocksize(void *, int, int, const audio_params_t *); |
94 | static void pad_get_locks(void *, kmutex_t **, kmutex_t **); |
95 | |
96 | static stream_filter_t *pad_swvol_filter_le(struct audio_softc *, |
97 | const audio_params_t *, const audio_params_t *); |
98 | static stream_filter_t *pad_swvol_filter_be(struct audio_softc *, |
99 | const audio_params_t *, const audio_params_t *); |
100 | static void pad_swvol_dtor(stream_filter_t *); |
101 | |
102 | static const struct audio_hw_if pad_hw_if = { |
103 | .open = pad_audio_open, |
104 | .query_encoding = pad_query_encoding, |
105 | .set_params = pad_set_params, |
106 | .start_output = pad_start_output, |
107 | .start_input = pad_start_input, |
108 | .halt_output = pad_halt_output, |
109 | .halt_input = pad_halt_input, |
110 | .getdev = pad_getdev, |
111 | .set_port = pad_set_port, |
112 | .get_port = pad_get_port, |
113 | .query_devinfo = pad_query_devinfo, |
114 | .get_props = pad_get_props, |
115 | .round_blocksize = pad_round_blocksize, |
116 | .get_locks = pad_get_locks, |
117 | }; |
118 | |
119 | #define PAD_NFORMATS 1 |
120 | static const struct audio_format pad_formats[PAD_NFORMATS] = { |
121 | { NULL, AUMODE_PLAY|AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16, |
122 | 2, AUFMT_STEREO, 1, { 44100 } }, |
123 | }; |
124 | |
125 | extern void padattach(int); |
126 | |
127 | static int pad_add_block(pad_softc_t *, uint8_t *, int); |
128 | static int pad_get_block(pad_softc_t *, pad_block_t *, int); |
129 | |
130 | dev_type_open(pad_open); |
131 | dev_type_close(pad_close); |
132 | dev_type_read(pad_read); |
133 | |
134 | const struct cdevsw pad_cdevsw = { |
135 | .d_open = pad_open, |
136 | .d_close = pad_close, |
137 | .d_read = pad_read, |
138 | .d_write = nowrite, |
139 | .d_ioctl = noioctl, |
140 | .d_stop = nostop, |
141 | .d_tty = notty, |
142 | .d_poll = nopoll, |
143 | .d_mmap = nommap, |
144 | .d_kqfilter = nokqfilter, |
145 | .d_discard = nodiscard, |
146 | .d_flag = D_OTHER | D_MPSAFE, |
147 | }; |
148 | |
149 | CFATTACH_DECL2_NEW(pad, sizeof(pad_softc_t), pad_match, pad_attach, pad_detach, |
150 | NULL, NULL, pad_childdet); |
151 | |
152 | void |
153 | padattach(int n) |
154 | { |
155 | int i, err; |
156 | cfdata_t cf; |
157 | |
158 | aprint_debug("pad: requested %d units\n" , n); |
159 | |
160 | err = config_cfattach_attach(pad_cd.cd_name, &pad_ca); |
161 | if (err) { |
162 | aprint_error("%s: couldn't register cfattach: %d\n" , |
163 | pad_cd.cd_name, err); |
164 | config_cfdriver_detach(&pad_cd); |
165 | return; |
166 | } |
167 | |
168 | for (i = 0; i < n; i++) { |
169 | cf = kmem_alloc(sizeof(struct cfdata), KM_SLEEP); |
170 | if (cf == NULL) { |
171 | aprint_error("%s: couldn't allocate cfdata\n" , |
172 | pad_cd.cd_name); |
173 | continue; |
174 | } |
175 | cf->cf_name = pad_cd.cd_name; |
176 | cf->cf_atname = pad_cd.cd_name; |
177 | cf->cf_unit = i; |
178 | cf->cf_fstate = FSTATE_STAR; |
179 | |
180 | (void)config_attach_pseudo(cf); |
181 | } |
182 | |
183 | return; |
184 | } |
185 | |
186 | static int |
187 | pad_add_block(pad_softc_t *sc, uint8_t *blk, int blksize) |
188 | { |
189 | int l; |
190 | |
191 | if (sc->sc_open == 0) |
192 | return EIO; |
193 | |
194 | KASSERT(mutex_owned(&sc->sc_lock)); |
195 | |
196 | if (sc->sc_buflen + blksize > PAD_BUFSIZE) |
197 | return ENOBUFS; |
198 | |
199 | if (sc->sc_wpos + blksize <= PAD_BUFSIZE) |
200 | memcpy(sc->sc_audiobuf + sc->sc_wpos, blk, blksize); |
201 | else { |
202 | l = PAD_BUFSIZE - sc->sc_wpos; |
203 | memcpy(sc->sc_audiobuf + sc->sc_wpos, blk, l); |
204 | memcpy(sc->sc_audiobuf, blk + l, blksize - l); |
205 | } |
206 | |
207 | sc->sc_wpos += blksize; |
208 | if (sc->sc_wpos > PAD_BUFSIZE) |
209 | sc->sc_wpos -= PAD_BUFSIZE; |
210 | |
211 | sc->sc_buflen += blksize; |
212 | |
213 | return 0; |
214 | } |
215 | |
216 | static int |
217 | pad_get_block(pad_softc_t *sc, pad_block_t *pb, int blksize) |
218 | { |
219 | int l; |
220 | |
221 | KASSERT(mutex_owned(&sc->sc_lock)); |
222 | KASSERT(pb != NULL); |
223 | |
224 | if (sc->sc_buflen < blksize) |
225 | return ERESTART; |
226 | |
227 | pb->pb_ptr = (sc->sc_audiobuf + sc->sc_rpos); |
228 | if (sc->sc_rpos + blksize < PAD_BUFSIZE) { |
229 | pb->pb_len = blksize; |
230 | sc->sc_rpos += blksize; |
231 | } else { |
232 | l = PAD_BUFSIZE - sc->sc_rpos; |
233 | pb->pb_len = l; |
234 | sc->sc_rpos = 0; |
235 | } |
236 | sc->sc_buflen -= pb->pb_len; |
237 | |
238 | return 0; |
239 | } |
240 | |
241 | static int |
242 | pad_match(device_t parent, cfdata_t data, void *opaque) |
243 | { |
244 | |
245 | return 1; |
246 | } |
247 | |
248 | static void |
249 | pad_childdet(device_t self, device_t child) |
250 | { |
251 | pad_softc_t *sc = device_private(self); |
252 | |
253 | sc->sc_audiodev = NULL; |
254 | } |
255 | |
256 | static void |
257 | pad_attach(device_t parent, device_t self, void *opaque) |
258 | { |
259 | pad_softc_t *sc = device_private(self); |
260 | |
261 | aprint_normal_dev(self, "outputs: 44100Hz, 16-bit, stereo\n" ); |
262 | |
263 | sc->sc_dev = self; |
264 | sc->sc_open = 0; |
265 | if (auconv_create_encodings(pad_formats, PAD_NFORMATS, |
266 | &sc->sc_encodings) != 0) { |
267 | aprint_error_dev(self, "couldn't create encodings\n" ); |
268 | return; |
269 | } |
270 | |
271 | cv_init(&sc->sc_condvar, device_xname(self)); |
272 | mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); |
273 | mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_NONE); |
274 | |
275 | sc->sc_swvol = 255; |
276 | sc->sc_buflen = 0; |
277 | sc->sc_rpos = sc->sc_wpos = 0; |
278 | sc->sc_audiodev = (void *)audio_attach_mi(&pad_hw_if, sc, sc->sc_dev); |
279 | |
280 | if (!pmf_device_register(self, NULL, NULL)) |
281 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
282 | |
283 | return; |
284 | } |
285 | |
286 | static int |
287 | pad_detach(device_t self, int flags) |
288 | { |
289 | pad_softc_t *sc = device_private(self); |
290 | int cmaj, mn, rc; |
291 | |
292 | cmaj = cdevsw_lookup_major(&pad_cdevsw); |
293 | mn = device_unit(self); |
294 | vdevgone(cmaj, mn, mn, VCHR); |
295 | |
296 | if ((rc = config_detach_children(self, flags)) != 0) |
297 | return rc; |
298 | |
299 | pmf_device_deregister(self); |
300 | |
301 | mutex_destroy(&sc->sc_lock); |
302 | mutex_destroy(&sc->sc_intr_lock); |
303 | cv_destroy(&sc->sc_condvar); |
304 | |
305 | auconv_delete_encodings(sc->sc_encodings); |
306 | |
307 | return 0; |
308 | } |
309 | |
310 | int |
311 | pad_open(dev_t dev, int flags, int fmt, struct lwp *l) |
312 | { |
313 | pad_softc_t *sc; |
314 | |
315 | sc = device_lookup_private(&pad_cd, PADUNIT(dev)); |
316 | if (sc == NULL) |
317 | return ENXIO; |
318 | |
319 | if (atomic_swap_uint(&sc->sc_open, 1) != 0) { |
320 | return EBUSY; |
321 | } |
322 | |
323 | getmicrotime(&sc->sc_last); |
324 | sc->sc_bytes_count = 0; |
325 | |
326 | return 0; |
327 | } |
328 | |
329 | int |
330 | pad_close(dev_t dev, int flags, int fmt, struct lwp *l) |
331 | { |
332 | pad_softc_t *sc; |
333 | |
334 | sc = device_lookup_private(&pad_cd, PADUNIT(dev)); |
335 | if (sc == NULL) |
336 | return ENXIO; |
337 | |
338 | KASSERT(sc->sc_open > 0); |
339 | sc->sc_open = 0; |
340 | |
341 | return 0; |
342 | } |
343 | |
344 | #define PAD_BYTES_PER_SEC (44100 * sizeof(int16_t) * 2) |
345 | #define TIMENEXTREAD (20 * 1000) |
346 | #define BYTESTOSLEEP ((PAD_BYTES_PER_SEC / (1000000 / TIMENEXTREAD)) + PAD_BLKSIZE) |
347 | |
348 | int |
349 | pad_read(dev_t dev, struct uio *uio, int flags) |
350 | { |
351 | struct timeval now; |
352 | uint64_t nowusec, lastusec; |
353 | pad_softc_t *sc; |
354 | pad_block_t pb; |
355 | void (*intr)(void *); |
356 | void *intrarg; |
357 | int err, wait_ticks; |
358 | |
359 | sc = device_lookup_private(&pad_cd, PADUNIT(dev)); |
360 | if (sc == NULL) |
361 | return ENXIO; |
362 | |
363 | err = 0; |
364 | |
365 | mutex_enter(&sc->sc_lock); |
366 | intr = sc->sc_intr; |
367 | intrarg = sc->sc_intrarg; |
368 | |
369 | while (uio->uio_resid > 0 && !err) { |
370 | getmicrotime(&now); |
371 | nowusec = (now.tv_sec * 1000000) + now.tv_usec; |
372 | lastusec = (sc->sc_last.tv_sec * 1000000) + |
373 | sc->sc_last.tv_usec; |
374 | if (lastusec + TIMENEXTREAD > nowusec && |
375 | sc->sc_bytes_count >= BYTESTOSLEEP) { |
376 | wait_ticks = (hz * ((lastusec + TIMENEXTREAD) - |
377 | nowusec)) / 1000000; |
378 | if (wait_ticks > 0) { |
379 | kpause("padwait" , TRUE, wait_ticks, |
380 | &sc->sc_lock); |
381 | } |
382 | |
383 | sc->sc_bytes_count -= BYTESTOSLEEP; |
384 | getmicrotime(&sc->sc_last); |
385 | } else if (sc->sc_bytes_count >= BYTESTOSLEEP) { |
386 | sc->sc_bytes_count -= BYTESTOSLEEP; |
387 | getmicrotime(&sc->sc_last); |
388 | } else if (lastusec + TIMENEXTREAD <= nowusec) |
389 | getmicrotime(&sc->sc_last); |
390 | |
391 | err = pad_get_block(sc, &pb, min(uio->uio_resid, PAD_BLKSIZE)); |
392 | if (!err) { |
393 | sc->sc_bytes_count += pb.pb_len; |
394 | |
395 | mutex_exit(&sc->sc_lock); |
396 | err = uiomove(pb.pb_ptr, pb.pb_len, uio); |
397 | mutex_enter(&sc->sc_lock); |
398 | continue; |
399 | } |
400 | |
401 | if (intr) { |
402 | mutex_enter(&sc->sc_intr_lock); |
403 | kpreempt_disable(); |
404 | (*intr)(intrarg); |
405 | kpreempt_enable(); |
406 | mutex_exit(&sc->sc_intr_lock); |
407 | intr = sc->sc_intr; |
408 | intrarg = sc->sc_intrarg; |
409 | err = 0; |
410 | continue; |
411 | } |
412 | err = cv_wait_sig(&sc->sc_condvar, &sc->sc_lock); |
413 | if (err != 0) |
414 | break; |
415 | |
416 | intr = sc->sc_intr; |
417 | intrarg = sc->sc_intrarg; |
418 | } |
419 | mutex_exit(&sc->sc_lock); |
420 | |
421 | return err; |
422 | } |
423 | |
424 | static int |
425 | pad_audio_open(void *opaque, int flags) |
426 | { |
427 | pad_softc_t *sc; |
428 | sc = opaque; |
429 | |
430 | if (sc->sc_open == 0) |
431 | return EIO; |
432 | |
433 | getmicrotime(&sc->sc_last); |
434 | return 0; |
435 | } |
436 | |
437 | static int |
438 | pad_query_encoding(void *opaque, struct audio_encoding *ae) |
439 | { |
440 | pad_softc_t *sc; |
441 | |
442 | sc = (pad_softc_t *)opaque; |
443 | |
444 | KASSERT(mutex_owned(&sc->sc_lock)); |
445 | |
446 | return auconv_query_encoding(sc->sc_encodings, ae); |
447 | } |
448 | |
449 | static int |
450 | pad_set_params(void *opaque, int setmode, int usemode, |
451 | audio_params_t *play, audio_params_t *rec, |
452 | stream_filter_list_t *pfil, stream_filter_list_t *rfil) |
453 | { |
454 | pad_softc_t *sc __diagused; |
455 | |
456 | sc = (pad_softc_t *)opaque; |
457 | |
458 | KASSERT(mutex_owned(&sc->sc_lock)); |
459 | |
460 | if (auconv_set_converter(pad_formats, PAD_NFORMATS, AUMODE_PLAY, |
461 | play, true, pfil) < 0) |
462 | return EINVAL; |
463 | if (auconv_set_converter(pad_formats, PAD_NFORMATS, AUMODE_RECORD, |
464 | rec, true, rfil) < 0) |
465 | return EINVAL; |
466 | |
467 | if (pfil->req_size > 0) |
468 | play = &pfil->filters[0].param; |
469 | switch (play->encoding) { |
470 | case AUDIO_ENCODING_SLINEAR_LE: |
471 | if (play->precision == 16 && play->validbits == 16) |
472 | pfil->prepend(pfil, pad_swvol_filter_le, play); |
473 | break; |
474 | case AUDIO_ENCODING_SLINEAR_BE: |
475 | if (play->precision == 16 && play->validbits == 16) |
476 | pfil->prepend(pfil, pad_swvol_filter_be, play); |
477 | break; |
478 | default: |
479 | break; |
480 | } |
481 | |
482 | return 0; |
483 | } |
484 | |
485 | static int |
486 | pad_start_output(void *opaque, void *block, int blksize, |
487 | void (*intr)(void *), void *intrarg) |
488 | { |
489 | pad_softc_t *sc; |
490 | int err; |
491 | |
492 | sc = (pad_softc_t *)opaque; |
493 | |
494 | KASSERT(mutex_owned(&sc->sc_lock)); |
495 | if (!sc->sc_open) |
496 | return EIO; |
497 | |
498 | sc->sc_intr = intr; |
499 | sc->sc_intrarg = intrarg; |
500 | sc->sc_blksize = blksize; |
501 | |
502 | err = pad_add_block(sc, block, blksize); |
503 | |
504 | cv_broadcast(&sc->sc_condvar); |
505 | |
506 | return err; |
507 | } |
508 | |
509 | static int |
510 | pad_start_input(void *opaque, void *block, int blksize, |
511 | void (*intr)(void *), void *intrarg) |
512 | { |
513 | pad_softc_t *sc __diagused; |
514 | |
515 | sc = (pad_softc_t *)opaque; |
516 | |
517 | KASSERT(mutex_owned(&sc->sc_lock)); |
518 | |
519 | return EOPNOTSUPP; |
520 | } |
521 | |
522 | static int |
523 | pad_halt_output(void *opaque) |
524 | { |
525 | pad_softc_t *sc; |
526 | |
527 | sc = (pad_softc_t *)opaque; |
528 | |
529 | KASSERT(mutex_owned(&sc->sc_lock)); |
530 | |
531 | sc->sc_intr = NULL; |
532 | sc->sc_intrarg = NULL; |
533 | sc->sc_buflen = 0; |
534 | sc->sc_rpos = sc->sc_wpos = 0; |
535 | |
536 | return 0; |
537 | } |
538 | |
539 | static int |
540 | pad_halt_input(void *opaque) |
541 | { |
542 | pad_softc_t *sc __diagused; |
543 | |
544 | sc = (pad_softc_t *)opaque; |
545 | |
546 | KASSERT(mutex_owned(&sc->sc_lock)); |
547 | |
548 | return 0; |
549 | } |
550 | |
551 | static int |
552 | pad_getdev(void *opaque, struct audio_device *ret) |
553 | { |
554 | strlcpy(ret->name, "Virtual Audio" , sizeof(ret->name)); |
555 | strlcpy(ret->version, osrelease, sizeof(ret->version)); |
556 | strlcpy(ret->config, "pad" , sizeof(ret->config)); |
557 | |
558 | return 0; |
559 | } |
560 | |
561 | static int |
562 | pad_set_port(void *opaque, mixer_ctrl_t *mc) |
563 | { |
564 | pad_softc_t *sc; |
565 | |
566 | sc = (pad_softc_t *)opaque; |
567 | |
568 | KASSERT(mutex_owned(&sc->sc_lock)); |
569 | |
570 | switch (mc->dev) { |
571 | case PAD_OUTPUT_MASTER_VOLUME: |
572 | case PAD_INPUT_DAC_VOLUME: |
573 | sc->sc_swvol = mc->un.value.level[AUDIO_MIXER_LEVEL_MONO]; |
574 | return 0; |
575 | } |
576 | |
577 | return ENXIO; |
578 | } |
579 | |
580 | static int |
581 | pad_get_port(void *opaque, mixer_ctrl_t *mc) |
582 | { |
583 | pad_softc_t *sc; |
584 | |
585 | sc = (pad_softc_t *)opaque; |
586 | |
587 | KASSERT(mutex_owned(&sc->sc_lock)); |
588 | |
589 | switch (mc->dev) { |
590 | case PAD_OUTPUT_MASTER_VOLUME: |
591 | case PAD_INPUT_DAC_VOLUME: |
592 | mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] = sc->sc_swvol; |
593 | return 0; |
594 | } |
595 | |
596 | return ENXIO; |
597 | } |
598 | |
599 | static int |
600 | pad_query_devinfo(void *opaque, mixer_devinfo_t *di) |
601 | { |
602 | pad_softc_t *sc __diagused; |
603 | |
604 | sc = (pad_softc_t *)opaque; |
605 | |
606 | KASSERT(mutex_owned(&sc->sc_lock)); |
607 | |
608 | switch (di->index) { |
609 | case PAD_OUTPUT_CLASS: |
610 | di->mixer_class = PAD_OUTPUT_CLASS; |
611 | strcpy(di->label.name, AudioCoutputs); |
612 | di->type = AUDIO_MIXER_CLASS; |
613 | di->next = di->prev = AUDIO_MIXER_LAST; |
614 | return 0; |
615 | case PAD_INPUT_CLASS: |
616 | di->mixer_class = PAD_INPUT_CLASS; |
617 | strcpy(di->label.name, AudioCinputs); |
618 | di->type = AUDIO_MIXER_CLASS; |
619 | di->next = di->prev = AUDIO_MIXER_LAST; |
620 | return 0; |
621 | case PAD_OUTPUT_MASTER_VOLUME: |
622 | di->mixer_class = PAD_OUTPUT_CLASS; |
623 | strcpy(di->label.name, AudioNmaster); |
624 | di->type = AUDIO_MIXER_VALUE; |
625 | di->next = di->prev = AUDIO_MIXER_LAST; |
626 | di->un.v.num_channels = 1; |
627 | strcpy(di->un.v.units.name, AudioNvolume); |
628 | return 0; |
629 | case PAD_INPUT_DAC_VOLUME: |
630 | di->mixer_class = PAD_INPUT_CLASS; |
631 | strcpy(di->label.name, AudioNdac); |
632 | di->type = AUDIO_MIXER_VALUE; |
633 | di->next = di->prev = AUDIO_MIXER_LAST; |
634 | di->un.v.num_channels = 1; |
635 | strcpy(di->un.v.units.name, AudioNvolume); |
636 | return 0; |
637 | } |
638 | |
639 | return ENXIO; |
640 | } |
641 | |
642 | static int |
643 | pad_get_props(void *opaque) |
644 | { |
645 | pad_softc_t *sc __diagused; |
646 | |
647 | sc = (pad_softc_t *)opaque; |
648 | |
649 | KASSERT(mutex_owned(&sc->sc_lock)); |
650 | |
651 | return 0; |
652 | } |
653 | |
654 | static int |
655 | pad_round_blocksize(void *opaque, int blksize, int mode, |
656 | const audio_params_t *p) |
657 | { |
658 | pad_softc_t *sc __diagused; |
659 | |
660 | sc = (pad_softc_t *)opaque; |
661 | KASSERT(mutex_owned(&sc->sc_lock)); |
662 | |
663 | return PAD_BLKSIZE; |
664 | } |
665 | |
666 | static void |
667 | pad_get_locks(void *opaque, kmutex_t **intr, kmutex_t **thread) |
668 | { |
669 | pad_softc_t *sc; |
670 | |
671 | sc = (pad_softc_t *)opaque; |
672 | |
673 | *intr = &sc->sc_intr_lock; |
674 | *thread = &sc->sc_lock; |
675 | } |
676 | |
677 | static stream_filter_t * |
678 | pad_swvol_filter_le(struct audio_softc *asc, |
679 | const audio_params_t *from, const audio_params_t *to) |
680 | { |
681 | auvolconv_filter_t *this; |
682 | device_t dev = audio_get_device(asc); |
683 | struct pad_softc *sc = device_private(dev); |
684 | |
685 | this = kmem_alloc(sizeof(auvolconv_filter_t), KM_SLEEP); |
686 | this->base.base.fetch_to = auvolconv_slinear16_le_fetch_to; |
687 | this->base.dtor = pad_swvol_dtor; |
688 | this->base.set_fetcher = stream_filter_set_fetcher; |
689 | this->base.set_inputbuffer = stream_filter_set_inputbuffer; |
690 | this->vol = &sc->sc_swvol; |
691 | |
692 | return (stream_filter_t *)this; |
693 | } |
694 | |
695 | static stream_filter_t * |
696 | pad_swvol_filter_be(struct audio_softc *asc, |
697 | const audio_params_t *from, const audio_params_t *to) |
698 | { |
699 | auvolconv_filter_t *this; |
700 | device_t dev = audio_get_device(asc); |
701 | struct pad_softc *sc = device_private(dev); |
702 | |
703 | this = kmem_alloc(sizeof(auvolconv_filter_t), KM_SLEEP); |
704 | this->base.base.fetch_to = auvolconv_slinear16_be_fetch_to; |
705 | this->base.dtor = pad_swvol_dtor; |
706 | this->base.set_fetcher = stream_filter_set_fetcher; |
707 | this->base.set_inputbuffer = stream_filter_set_inputbuffer; |
708 | this->vol = &sc->sc_swvol; |
709 | |
710 | return (stream_filter_t *)this; |
711 | } |
712 | |
713 | static void |
714 | pad_swvol_dtor(stream_filter_t *this) |
715 | { |
716 | if (this) |
717 | kmem_free(this, sizeof(auvolconv_filter_t)); |
718 | } |
719 | |
720 | #ifdef _MODULE |
721 | |
722 | MODULE(MODULE_CLASS_DRIVER, pad, NULL); |
723 | |
724 | static const struct cfiattrdata audiobuscf_iattrdata = { |
725 | "audiobus" , 0, { { NULL, NULL, 0 }, } |
726 | }; |
727 | static const struct cfiattrdata * const pad_attrs[] = { |
728 | &audiobuscf_iattrdata, NULL |
729 | }; |
730 | |
731 | CFDRIVER_DECL(pad, DV_DULL, pad_attrs); |
732 | extern struct cfattach pad_ca; |
733 | static int padloc[] = { -1, -1 }; |
734 | |
735 | static struct cfdata pad_cfdata[] = { |
736 | { |
737 | .cf_name = "pad" , |
738 | .cf_atname = "pad" , |
739 | .cf_unit = 0, |
740 | .cf_fstate = FSTATE_STAR, |
741 | .cf_loc = padloc, |
742 | .cf_flags = 0, |
743 | .cf_pspec = NULL, |
744 | }, |
745 | { NULL, NULL, 0, 0, NULL, 0, NULL } |
746 | }; |
747 | |
748 | static int |
749 | pad_modcmd(modcmd_t cmd, void *arg) |
750 | { |
751 | devmajor_t cmajor = NODEVMAJOR, bmajor = NODEVMAJOR; |
752 | int error; |
753 | |
754 | switch (cmd) { |
755 | case MODULE_CMD_INIT: |
756 | error = config_cfdriver_attach(&pad_cd); |
757 | if (error) { |
758 | return error; |
759 | } |
760 | |
761 | error = config_cfattach_attach(pad_cd.cd_name, &pad_ca); |
762 | if (error) { |
763 | config_cfdriver_detach(&pad_cd); |
764 | aprint_error("%s: unable to register cfattach\n" , |
765 | pad_cd.cd_name); |
766 | |
767 | return error; |
768 | } |
769 | |
770 | error = config_cfdata_attach(pad_cfdata, 1); |
771 | if (error) { |
772 | config_cfattach_detach(pad_cd.cd_name, &pad_ca); |
773 | config_cfdriver_detach(&pad_cd); |
774 | aprint_error("%s: unable to register cfdata\n" , |
775 | pad_cd.cd_name); |
776 | |
777 | return error; |
778 | } |
779 | |
780 | error = devsw_attach(pad_cd.cd_name, NULL, &bmajor, |
781 | &pad_cdevsw, &cmajor); |
782 | if (error) { |
783 | error = config_cfdata_detach(pad_cfdata); |
784 | if (error) { |
785 | return error; |
786 | } |
787 | config_cfattach_detach(pad_cd.cd_name, &pad_ca); |
788 | config_cfdriver_detach(&pad_cd); |
789 | aprint_error("%s: unable to register devsw\n" , |
790 | pad_cd.cd_name); |
791 | |
792 | return error; |
793 | } |
794 | |
795 | (void)config_attach_pseudo(pad_cfdata); |
796 | |
797 | return 0; |
798 | case MODULE_CMD_FINI: |
799 | error = config_cfdata_detach(pad_cfdata); |
800 | if (error) { |
801 | return error; |
802 | } |
803 | |
804 | config_cfattach_detach(pad_cd.cd_name, &pad_ca); |
805 | config_cfdriver_detach(&pad_cd); |
806 | devsw_detach(NULL, &pad_cdevsw); |
807 | |
808 | return 0; |
809 | default: |
810 | return ENOTTY; |
811 | } |
812 | } |
813 | |
814 | #endif |
815 | |