-
Notifications
You must be signed in to change notification settings - Fork 102
/
hda_codec.c
4045 lines (3642 loc) · 108 KB
/
hda_codec.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Universal Interface for Intel High Definition Audio Codec
*
* Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
*/
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <sound/core.h>
#include <sound/hda_codec.h>
#include <sound/asoundef.h>
#include <sound/tlv.h>
#include <sound/initval.h>
#include <sound/jack.h>
#include "hda_local.h"
#include "hda_beep.h"
#include "hda_jack.h"
#include <sound/hda_hwdep.h>
#include <sound/hda_component.h>
#define codec_in_pm(codec) snd_hdac_is_in_pm(&codec->core)
#define hda_codec_is_power_on(codec) snd_hdac_is_power_on(&codec->core)
#define codec_has_epss(codec) \
((codec)->core.power_caps & AC_PWRST_EPSS)
#define codec_has_clkstop(codec) \
((codec)->core.power_caps & AC_PWRST_CLKSTOP)
/*
* Send and receive a verb - passed to exec_verb override for hdac_device
*/
static int codec_exec_verb(struct hdac_device *dev, unsigned int cmd,
unsigned int flags, unsigned int *res)
{
struct hda_codec *codec = container_of(dev, struct hda_codec, core);
struct hda_bus *bus = codec->bus;
int err;
if (cmd == ~0)
return -1;
again:
snd_hda_power_up_pm(codec);
mutex_lock(&bus->core.cmd_mutex);
if (flags & HDA_RW_NO_RESPONSE_FALLBACK)
bus->no_response_fallback = 1;
err = snd_hdac_bus_exec_verb_unlocked(&bus->core, codec->core.addr,
cmd, res);
bus->no_response_fallback = 0;
mutex_unlock(&bus->core.cmd_mutex);
snd_hda_power_down_pm(codec);
if (!codec_in_pm(codec) && res && err == -EAGAIN) {
if (bus->response_reset) {
codec_dbg(codec,
"resetting BUS due to fatal communication error\n");
snd_hda_bus_reset(bus);
}
goto again;
}
/* clear reset-flag when the communication gets recovered */
if (!err || codec_in_pm(codec))
bus->response_reset = 0;
return err;
}
/**
* snd_hda_sequence_write - sequence writes
* @codec: the HDA codec
* @seq: VERB array to send
*
* Send the commands sequentially from the given array.
* The array must be terminated with NID=0.
*/
void snd_hda_sequence_write(struct hda_codec *codec, const struct hda_verb *seq)
{
for (; seq->nid; seq++)
snd_hda_codec_write(codec, seq->nid, 0, seq->verb, seq->param);
}
EXPORT_SYMBOL_GPL(snd_hda_sequence_write);
/* connection list element */
struct hda_conn_list {
struct list_head list;
int len;
hda_nid_t nid;
hda_nid_t conns[0];
};
/* look up the cached results */
static struct hda_conn_list *
lookup_conn_list(struct hda_codec *codec, hda_nid_t nid)
{
struct hda_conn_list *p;
list_for_each_entry(p, &codec->conn_list, list) {
if (p->nid == nid)
return p;
}
return NULL;
}
static int add_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
const hda_nid_t *list)
{
struct hda_conn_list *p;
p = kmalloc(struct_size(p, conns, len), GFP_KERNEL);
if (!p)
return -ENOMEM;
p->len = len;
p->nid = nid;
memcpy(p->conns, list, len * sizeof(hda_nid_t));
list_add(&p->list, &codec->conn_list);
return 0;
}
static void remove_conn_list(struct hda_codec *codec)
{
while (!list_empty(&codec->conn_list)) {
struct hda_conn_list *p;
p = list_first_entry(&codec->conn_list, typeof(*p), list);
list_del(&p->list);
kfree(p);
}
}
/* read the connection and add to the cache */
static int read_and_add_raw_conns(struct hda_codec *codec, hda_nid_t nid)
{
hda_nid_t list[32];
hda_nid_t *result = list;
int len;
len = snd_hda_get_raw_connections(codec, nid, list, ARRAY_SIZE(list));
if (len == -ENOSPC) {
len = snd_hda_get_num_raw_conns(codec, nid);
result = kmalloc_array(len, sizeof(hda_nid_t), GFP_KERNEL);
if (!result)
return -ENOMEM;
len = snd_hda_get_raw_connections(codec, nid, result, len);
}
if (len >= 0)
len = snd_hda_override_conn_list(codec, nid, len, result);
if (result != list)
kfree(result);
return len;
}
/**
* snd_hda_get_conn_list - get connection list
* @codec: the HDA codec
* @nid: NID to parse
* @listp: the pointer to store NID list
*
* Parses the connection list of the given widget and stores the pointer
* to the list of NIDs.
*
* Returns the number of connections, or a negative error code.
*
* Note that the returned pointer isn't protected against the list
* modification. If snd_hda_override_conn_list() might be called
* concurrently, protect with a mutex appropriately.
*/
int snd_hda_get_conn_list(struct hda_codec *codec, hda_nid_t nid,
const hda_nid_t **listp)
{
bool added = false;
for (;;) {
int err;
const struct hda_conn_list *p;
/* if the connection-list is already cached, read it */
p = lookup_conn_list(codec, nid);
if (p) {
if (listp)
*listp = p->conns;
return p->len;
}
if (snd_BUG_ON(added))
return -EINVAL;
err = read_and_add_raw_conns(codec, nid);
if (err < 0)
return err;
added = true;
}
}
EXPORT_SYMBOL_GPL(snd_hda_get_conn_list);
/**
* snd_hda_get_connections - copy connection list
* @codec: the HDA codec
* @nid: NID to parse
* @conn_list: connection list array; when NULL, checks only the size
* @max_conns: max. number of connections to store
*
* Parses the connection list of the given widget and stores the list
* of NIDs.
*
* Returns the number of connections, or a negative error code.
*/
int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
hda_nid_t *conn_list, int max_conns)
{
const hda_nid_t *list;
int len = snd_hda_get_conn_list(codec, nid, &list);
if (len > 0 && conn_list) {
if (len > max_conns) {
codec_err(codec, "Too many connections %d for NID 0x%x\n",
len, nid);
return -EINVAL;
}
memcpy(conn_list, list, len * sizeof(hda_nid_t));
}
return len;
}
EXPORT_SYMBOL_GPL(snd_hda_get_connections);
/**
* snd_hda_override_conn_list - add/modify the connection-list to cache
* @codec: the HDA codec
* @nid: NID to parse
* @len: number of connection list entries
* @list: the list of connection entries
*
* Add or modify the given connection-list to the cache. If the corresponding
* cache already exists, invalidate it and append a new one.
*
* Returns zero or a negative error code.
*/
int snd_hda_override_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
const hda_nid_t *list)
{
struct hda_conn_list *p;
p = lookup_conn_list(codec, nid);
if (p) {
list_del(&p->list);
kfree(p);
}
return add_conn_list(codec, nid, len, list);
}
EXPORT_SYMBOL_GPL(snd_hda_override_conn_list);
/**
* snd_hda_get_conn_index - get the connection index of the given NID
* @codec: the HDA codec
* @mux: NID containing the list
* @nid: NID to select
* @recursive: 1 when searching NID recursively, otherwise 0
*
* Parses the connection list of the widget @mux and checks whether the
* widget @nid is present. If it is, return the connection index.
* Otherwise it returns -1.
*/
int snd_hda_get_conn_index(struct hda_codec *codec, hda_nid_t mux,
hda_nid_t nid, int recursive)
{
const hda_nid_t *conn;
int i, nums;
nums = snd_hda_get_conn_list(codec, mux, &conn);
for (i = 0; i < nums; i++)
if (conn[i] == nid)
return i;
if (!recursive)
return -1;
if (recursive > 10) {
codec_dbg(codec, "too deep connection for 0x%x\n", nid);
return -1;
}
recursive++;
for (i = 0; i < nums; i++) {
unsigned int type = get_wcaps_type(get_wcaps(codec, conn[i]));
if (type == AC_WID_PIN || type == AC_WID_AUD_OUT)
continue;
if (snd_hda_get_conn_index(codec, conn[i], nid, recursive) >= 0)
return i;
}
return -1;
}
EXPORT_SYMBOL_GPL(snd_hda_get_conn_index);
/**
* snd_hda_get_num_devices - get DEVLIST_LEN parameter of the given widget
* @codec: the HDA codec
* @nid: NID of the pin to parse
*
* Get the device entry number on the given widget. This is a feature of
* DP MST audio. Each pin can have several device entries in it.
*/
unsigned int snd_hda_get_num_devices(struct hda_codec *codec, hda_nid_t nid)
{
unsigned int wcaps = get_wcaps(codec, nid);
unsigned int parm;
if (!codec->dp_mst || !(wcaps & AC_WCAP_DIGITAL) ||
get_wcaps_type(wcaps) != AC_WID_PIN)
return 0;
parm = snd_hdac_read_parm_uncached(&codec->core, nid, AC_PAR_DEVLIST_LEN);
if (parm == -1)
parm = 0;
return parm & AC_DEV_LIST_LEN_MASK;
}
EXPORT_SYMBOL_GPL(snd_hda_get_num_devices);
/**
* snd_hda_get_devices - copy device list without cache
* @codec: the HDA codec
* @nid: NID of the pin to parse
* @dev_list: device list array
* @max_devices: max. number of devices to store
*
* Copy the device list. This info is dynamic and so not cached.
* Currently called only from hda_proc.c, so not exported.
*/
int snd_hda_get_devices(struct hda_codec *codec, hda_nid_t nid,
u8 *dev_list, int max_devices)
{
unsigned int parm;
int i, dev_len, devices;
parm = snd_hda_get_num_devices(codec, nid);
if (!parm) /* not multi-stream capable */
return 0;
dev_len = parm + 1;
dev_len = dev_len < max_devices ? dev_len : max_devices;
devices = 0;
while (devices < dev_len) {
if (snd_hdac_read(&codec->core, nid,
AC_VERB_GET_DEVICE_LIST, devices, &parm))
break; /* error */
for (i = 0; i < 8; i++) {
dev_list[devices] = (u8)parm;
parm >>= 4;
devices++;
if (devices >= dev_len)
break;
}
}
return devices;
}
/**
* snd_hda_get_dev_select - get device entry select on the pin
* @codec: the HDA codec
* @nid: NID of the pin to get device entry select
*
* Get the devcie entry select on the pin. Return the device entry
* id selected on the pin. Return 0 means the first device entry
* is selected or MST is not supported.
*/
int snd_hda_get_dev_select(struct hda_codec *codec, hda_nid_t nid)
{
/* not support dp_mst will always return 0, using first dev_entry */
if (!codec->dp_mst)
return 0;
return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DEVICE_SEL, 0);
}
EXPORT_SYMBOL_GPL(snd_hda_get_dev_select);
/**
* snd_hda_set_dev_select - set device entry select on the pin
* @codec: the HDA codec
* @nid: NID of the pin to set device entry select
* @dev_id: device entry id to be set
*
* Set the device entry select on the pin nid.
*/
int snd_hda_set_dev_select(struct hda_codec *codec, hda_nid_t nid, int dev_id)
{
int ret, num_devices;
/* not support dp_mst will always return 0, using first dev_entry */
if (!codec->dp_mst)
return 0;
/* AC_PAR_DEVLIST_LEN is 0 based. */
num_devices = snd_hda_get_num_devices(codec, nid) + 1;
/* If Device List Length is 0 (num_device = 1),
* the pin is not multi stream capable.
* Do nothing in this case.
*/
if (num_devices == 1)
return 0;
/* Behavior of setting index being equal to or greater than
* Device List Length is not predictable
*/
if (num_devices <= dev_id)
return -EINVAL;
ret = snd_hda_codec_write(codec, nid, 0,
AC_VERB_SET_DEVICE_SEL, dev_id);
return ret;
}
EXPORT_SYMBOL_GPL(snd_hda_set_dev_select);
/*
* read widget caps for each widget and store in cache
*/
static int read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node)
{
int i;
hda_nid_t nid;
codec->wcaps = kmalloc_array(codec->core.num_nodes, 4, GFP_KERNEL);
if (!codec->wcaps)
return -ENOMEM;
nid = codec->core.start_nid;
for (i = 0; i < codec->core.num_nodes; i++, nid++)
codec->wcaps[i] = snd_hdac_read_parm_uncached(&codec->core,
nid, AC_PAR_AUDIO_WIDGET_CAP);
return 0;
}
/* read all pin default configurations and save codec->init_pins */
static int read_pin_defaults(struct hda_codec *codec)
{
hda_nid_t nid;
for_each_hda_codec_node(nid, codec) {
struct hda_pincfg *pin;
unsigned int wcaps = get_wcaps(codec, nid);
unsigned int wid_type = get_wcaps_type(wcaps);
if (wid_type != AC_WID_PIN)
continue;
pin = snd_array_new(&codec->init_pins);
if (!pin)
return -ENOMEM;
pin->nid = nid;
pin->cfg = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_CONFIG_DEFAULT, 0);
/*
* all device entries are the same widget control so far
* fixme: if any codec is different, need fix here
*/
pin->ctrl = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_PIN_WIDGET_CONTROL,
0);
}
return 0;
}
/* look up the given pin config list and return the item matching with NID */
static struct hda_pincfg *look_up_pincfg(struct hda_codec *codec,
struct snd_array *array,
hda_nid_t nid)
{
struct hda_pincfg *pin;
int i;
snd_array_for_each(array, i, pin) {
if (pin->nid == nid)
return pin;
}
return NULL;
}
/* set the current pin config value for the given NID.
* the value is cached, and read via snd_hda_codec_get_pincfg()
*/
int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
hda_nid_t nid, unsigned int cfg)
{
struct hda_pincfg *pin;
/* the check below may be invalid when pins are added by a fixup
* dynamically (e.g. via snd_hda_codec_update_widgets()), so disabled
* for now
*/
/*
if (get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_PIN)
return -EINVAL;
*/
pin = look_up_pincfg(codec, list, nid);
if (!pin) {
pin = snd_array_new(list);
if (!pin)
return -ENOMEM;
pin->nid = nid;
}
pin->cfg = cfg;
return 0;
}
/**
* snd_hda_codec_set_pincfg - Override a pin default configuration
* @codec: the HDA codec
* @nid: NID to set the pin config
* @cfg: the pin default config value
*
* Override a pin default configuration value in the cache.
* This value can be read by snd_hda_codec_get_pincfg() in a higher
* priority than the real hardware value.
*/
int snd_hda_codec_set_pincfg(struct hda_codec *codec,
hda_nid_t nid, unsigned int cfg)
{
return snd_hda_add_pincfg(codec, &codec->driver_pins, nid, cfg);
}
EXPORT_SYMBOL_GPL(snd_hda_codec_set_pincfg);
/**
* snd_hda_codec_get_pincfg - Obtain a pin-default configuration
* @codec: the HDA codec
* @nid: NID to get the pin config
*
* Get the current pin config value of the given pin NID.
* If the pincfg value is cached or overridden via sysfs or driver,
* returns the cached value.
*/
unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid)
{
struct hda_pincfg *pin;
#ifdef CONFIG_SND_HDA_RECONFIG
{
unsigned int cfg = 0;
mutex_lock(&codec->user_mutex);
pin = look_up_pincfg(codec, &codec->user_pins, nid);
if (pin)
cfg = pin->cfg;
mutex_unlock(&codec->user_mutex);
if (cfg)
return cfg;
}
#endif
pin = look_up_pincfg(codec, &codec->driver_pins, nid);
if (pin)
return pin->cfg;
pin = look_up_pincfg(codec, &codec->init_pins, nid);
if (pin)
return pin->cfg;
return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_get_pincfg);
/**
* snd_hda_codec_set_pin_target - remember the current pinctl target value
* @codec: the HDA codec
* @nid: pin NID
* @val: assigned pinctl value
*
* This function stores the given value to a pinctl target value in the
* pincfg table. This isn't always as same as the actually written value
* but can be referred at any time via snd_hda_codec_get_pin_target().
*/
int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid,
unsigned int val)
{
struct hda_pincfg *pin;
pin = look_up_pincfg(codec, &codec->init_pins, nid);
if (!pin)
return -EINVAL;
pin->target = val;
return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_set_pin_target);
/**
* snd_hda_codec_get_pin_target - return the current pinctl target value
* @codec: the HDA codec
* @nid: pin NID
*/
int snd_hda_codec_get_pin_target(struct hda_codec *codec, hda_nid_t nid)
{
struct hda_pincfg *pin;
pin = look_up_pincfg(codec, &codec->init_pins, nid);
if (!pin)
return 0;
return pin->target;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_get_pin_target);
/**
* snd_hda_shutup_pins - Shut up all pins
* @codec: the HDA codec
*
* Clear all pin controls to shup up before suspend for avoiding click noise.
* The controls aren't cached so that they can be resumed properly.
*/
void snd_hda_shutup_pins(struct hda_codec *codec)
{
const struct hda_pincfg *pin;
int i;
/* don't shut up pins when unloading the driver; otherwise it breaks
* the default pin setup at the next load of the driver
*/
if (codec->bus->shutdown)
return;
snd_array_for_each(&codec->init_pins, i, pin) {
/* use read here for syncing after issuing each verb */
snd_hda_codec_read(codec, pin->nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
}
codec->pins_shutup = 1;
}
EXPORT_SYMBOL_GPL(snd_hda_shutup_pins);
#ifdef CONFIG_PM
/* Restore the pin controls cleared previously via snd_hda_shutup_pins() */
static void restore_shutup_pins(struct hda_codec *codec)
{
const struct hda_pincfg *pin;
int i;
if (!codec->pins_shutup)
return;
if (codec->bus->shutdown)
return;
snd_array_for_each(&codec->init_pins, i, pin) {
snd_hda_codec_write(codec, pin->nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL,
pin->ctrl);
}
codec->pins_shutup = 0;
}
#endif
static void hda_jackpoll_work(struct work_struct *work)
{
struct hda_codec *codec =
container_of(work, struct hda_codec, jackpoll_work.work);
/* for non-polling trigger: we need nothing if already powered on */
if (!codec->jackpoll_interval && snd_hdac_is_power_on(&codec->core))
return;
/* the power-up/down sequence triggers the runtime resume */
snd_hda_power_up_pm(codec);
/* update jacks manually if polling is required, too */
if (codec->jackpoll_interval) {
snd_hda_jack_set_dirty_all(codec);
snd_hda_jack_poll_all(codec);
}
snd_hda_power_down_pm(codec);
if (!codec->jackpoll_interval)
return;
schedule_delayed_work(&codec->jackpoll_work,
codec->jackpoll_interval);
}
/* release all pincfg lists */
static void free_init_pincfgs(struct hda_codec *codec)
{
snd_array_free(&codec->driver_pins);
#ifdef CONFIG_SND_HDA_RECONFIG
snd_array_free(&codec->user_pins);
#endif
snd_array_free(&codec->init_pins);
}
/*
* audio-converter setup caches
*/
struct hda_cvt_setup {
hda_nid_t nid;
u8 stream_tag;
u8 channel_id;
u16 format_id;
unsigned char active; /* cvt is currently used */
unsigned char dirty; /* setups should be cleared */
};
/* get or create a cache entry for the given audio converter NID */
static struct hda_cvt_setup *
get_hda_cvt_setup(struct hda_codec *codec, hda_nid_t nid)
{
struct hda_cvt_setup *p;
int i;
snd_array_for_each(&codec->cvt_setups, i, p) {
if (p->nid == nid)
return p;
}
p = snd_array_new(&codec->cvt_setups);
if (p)
p->nid = nid;
return p;
}
/*
* PCM device
*/
static void release_pcm(struct kref *kref)
{
struct hda_pcm *pcm = container_of(kref, struct hda_pcm, kref);
if (pcm->pcm)
snd_device_free(pcm->codec->card, pcm->pcm);
clear_bit(pcm->device, pcm->codec->bus->pcm_dev_bits);
kfree(pcm->name);
kfree(pcm);
}
void snd_hda_codec_pcm_put(struct hda_pcm *pcm)
{
kref_put(&pcm->kref, release_pcm);
}
EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_put);
struct hda_pcm *snd_hda_codec_pcm_new(struct hda_codec *codec,
const char *fmt, ...)
{
struct hda_pcm *pcm;
va_list args;
pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
if (!pcm)
return NULL;
pcm->codec = codec;
kref_init(&pcm->kref);
va_start(args, fmt);
pcm->name = kvasprintf(GFP_KERNEL, fmt, args);
va_end(args);
if (!pcm->name) {
kfree(pcm);
return NULL;
}
list_add_tail(&pcm->list, &codec->pcm_list_head);
return pcm;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_new);
/*
* codec destructor
*/
static void codec_release_pcms(struct hda_codec *codec)
{
struct hda_pcm *pcm, *n;
list_for_each_entry_safe(pcm, n, &codec->pcm_list_head, list) {
list_del_init(&pcm->list);
if (pcm->pcm)
snd_device_disconnect(codec->card, pcm->pcm);
snd_hda_codec_pcm_put(pcm);
}
}
void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec)
{
if (codec->registered) {
/* pm_runtime_put() is called in snd_hdac_device_exit() */
pm_runtime_get_noresume(hda_codec_dev(codec));
pm_runtime_disable(hda_codec_dev(codec));
codec->registered = 0;
}
cancel_delayed_work_sync(&codec->jackpoll_work);
if (!codec->in_freeing)
snd_hda_ctls_clear(codec);
codec_release_pcms(codec);
snd_hda_detach_beep_device(codec);
memset(&codec->patch_ops, 0, sizeof(codec->patch_ops));
snd_hda_jack_tbl_clear(codec);
codec->proc_widget_hook = NULL;
codec->spec = NULL;
/* free only driver_pins so that init_pins + user_pins are restored */
snd_array_free(&codec->driver_pins);
snd_array_free(&codec->cvt_setups);
snd_array_free(&codec->spdif_out);
snd_array_free(&codec->verbs);
codec->preset = NULL;
codec->slave_dig_outs = NULL;
codec->spdif_status_reset = 0;
snd_array_free(&codec->mixers);
snd_array_free(&codec->nids);
remove_conn_list(codec);
snd_hdac_regmap_exit(&codec->core);
}
static unsigned int hda_set_power_state(struct hda_codec *codec,
unsigned int power_state);
/* enable/disable display power per codec */
static void codec_display_power(struct hda_codec *codec, bool enable)
{
if (codec->display_power_control)
snd_hdac_display_power(&codec->bus->core, codec->addr, enable);
}
/* also called from hda_bind.c */
void snd_hda_codec_register(struct hda_codec *codec)
{
if (codec->registered)
return;
if (device_is_registered(hda_codec_dev(codec))) {
codec_display_power(codec, true);
pm_runtime_enable(hda_codec_dev(codec));
/* it was powered up in snd_hda_codec_new(), now all done */
snd_hda_power_down(codec);
codec->registered = 1;
}
}
static int snd_hda_codec_dev_register(struct snd_device *device)
{
snd_hda_codec_register(device->device_data);
return 0;
}
static int snd_hda_codec_dev_free(struct snd_device *device)
{
struct hda_codec *codec = device->device_data;
codec->in_freeing = 1;
/*
* snd_hda_codec_device_new() is used by legacy HDA and ASoC driver.
* We can't unregister ASoC device since it will be unregistered in
* snd_hdac_ext_bus_device_remove().
*/
if (codec->core.type == HDA_DEV_LEGACY)
snd_hdac_device_unregister(&codec->core);
codec_display_power(codec, false);
/*
* In the case of ASoC HD-audio bus, the device refcount is released in
* snd_hdac_ext_bus_device_remove() explicitly.
*/
if (codec->core.type == HDA_DEV_LEGACY)
put_device(hda_codec_dev(codec));
return 0;
}
static void snd_hda_codec_dev_release(struct device *dev)
{
struct hda_codec *codec = dev_to_hda_codec(dev);
free_init_pincfgs(codec);
snd_hdac_device_exit(&codec->core);
snd_hda_sysfs_clear(codec);
kfree(codec->modelname);
kfree(codec->wcaps);
/*
* In the case of ASoC HD-audio, hda_codec is device managed.
* It will be freed when the ASoC device is removed.
*/
if (codec->core.type == HDA_DEV_LEGACY)
kfree(codec);
}
#define DEV_NAME_LEN 31
static int snd_hda_codec_device_init(struct hda_bus *bus, struct snd_card *card,
unsigned int codec_addr, struct hda_codec **codecp)
{
char name[DEV_NAME_LEN];
struct hda_codec *codec;
int err;
dev_dbg(card->dev, "%s: entry\n", __func__);
if (snd_BUG_ON(!bus))
return -EINVAL;
if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
return -EINVAL;
codec = kzalloc(sizeof(*codec), GFP_KERNEL);
if (!codec)
return -ENOMEM;
sprintf(name, "hdaudioC%dD%d", card->number, codec_addr);
err = snd_hdac_device_init(&codec->core, &bus->core, name, codec_addr);
if (err < 0) {
kfree(codec);
return err;
}
codec->core.type = HDA_DEV_LEGACY;
*codecp = codec;
return err;
}
/**
* snd_hda_codec_new - create a HDA codec
* @bus: the bus to assign
* @codec_addr: the codec address
* @codecp: the pointer to store the generated codec
*
* Returns 0 if successful, or a negative error code.
*/
int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
unsigned int codec_addr, struct hda_codec **codecp)
{
int ret;
ret = snd_hda_codec_device_init(bus, card, codec_addr, codecp);
if (ret < 0)
return ret;
return snd_hda_codec_device_new(bus, card, codec_addr, *codecp);
}
EXPORT_SYMBOL_GPL(snd_hda_codec_new);
int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card,
unsigned int codec_addr, struct hda_codec *codec)
{
char component[31];
hda_nid_t fg;
int err;
static struct snd_device_ops dev_ops = {
.dev_register = snd_hda_codec_dev_register,
.dev_free = snd_hda_codec_dev_free,
};
dev_dbg(card->dev, "%s: entry\n", __func__);
if (snd_BUG_ON(!bus))
return -EINVAL;
if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
return -EINVAL;
codec->core.dev.release = snd_hda_codec_dev_release;
codec->core.exec_verb = codec_exec_verb;
codec->bus = bus;
codec->card = card;
codec->addr = codec_addr;
mutex_init(&codec->spdif_mutex);
mutex_init(&codec->control_mutex);
snd_array_init(&codec->mixers, sizeof(struct hda_nid_item), 32);
snd_array_init(&codec->nids, sizeof(struct hda_nid_item), 32);
snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16);
snd_array_init(&codec->driver_pins, sizeof(struct hda_pincfg), 16);
snd_array_init(&codec->cvt_setups, sizeof(struct hda_cvt_setup), 8);
snd_array_init(&codec->spdif_out, sizeof(struct hda_spdif_out), 16);
snd_array_init(&codec->jacktbl, sizeof(struct hda_jack_tbl), 16);
snd_array_init(&codec->verbs, sizeof(struct hda_verb *), 8);
INIT_LIST_HEAD(&codec->conn_list);
INIT_LIST_HEAD(&codec->pcm_list_head);
INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work);
codec->depop_delay = -1;
codec->fixup_id = HDA_FIXUP_ID_NOT_SET;
#ifdef CONFIG_PM
codec->power_jiffies = jiffies;
#endif
snd_hda_sysfs_init(codec);
if (codec->bus->modelname) {
codec->modelname = kstrdup(codec->bus->modelname, GFP_KERNEL);
if (!codec->modelname) {
err = -ENOMEM;
goto error;
}
}
fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
err = read_widget_caps(codec, fg);
if (err < 0)
goto error;
err = read_pin_defaults(codec);
if (err < 0)
goto error;
/* power-up all before initialization */
hda_set_power_state(codec, AC_PWRST_D0);
codec->core.dev.power.power_state = PMSG_ON;
snd_hda_codec_proc_new(codec);
snd_hda_create_hwdep(codec);
sprintf(component, "HDA:%08x,%08x,%08x", codec->core.vendor_id,
codec->core.subsystem_id, codec->core.revision_id);
snd_component_add(card, component);
err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops);
if (err < 0)
goto error;