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5
6#include <linux/init.h>
7#include <linux/delay.h>
8#include <linux/device.h>
9#include <linux/slab.h>
10#include <linux/module.h>
11#include <linux/export.h>
12#include <linux/pm_runtime.h>
13#include <sound/hdaudio.h>
14#include <sound/hda_regmap.h>
15#include <sound/pcm.h>
16#include "local.h"
17
18static void setup_fg_nodes(struct hdac_device *codec);
19static int get_codec_vendor_name(struct hdac_device *codec);
20
21static void default_release(struct device *dev)
22{
23 snd_hdac_device_exit(container_of(dev, struct hdac_device, dev));
24}
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus,
41 const char *name, unsigned int addr)
42{
43 struct device *dev;
44 hda_nid_t fg;
45 int err;
46
47 dev = &codec->dev;
48 device_initialize(dev);
49 dev->parent = bus->dev;
50 dev->bus = &snd_hda_bus_type;
51 dev->release = default_release;
52 dev->groups = hdac_dev_attr_groups;
53 dev_set_name(dev, "%s", name);
54 device_enable_async_suspend(dev);
55
56 codec->bus = bus;
57 codec->addr = addr;
58 codec->type = HDA_DEV_CORE;
59 mutex_init(&codec->widget_lock);
60 pm_runtime_set_active(&codec->dev);
61 pm_runtime_get_noresume(&codec->dev);
62 atomic_set(&codec->in_pm, 0);
63
64 err = snd_hdac_bus_add_device(bus, codec);
65 if (err < 0)
66 goto error;
67
68
69 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
70 AC_PAR_VENDOR_ID);
71 if (codec->vendor_id == -1) {
72
73
74
75 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
76 AC_PAR_VENDOR_ID);
77 }
78
79 codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
80 AC_PAR_SUBSYSTEM_ID);
81 codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
82 AC_PAR_REV_ID);
83
84 setup_fg_nodes(codec);
85 if (!codec->afg && !codec->mfg) {
86 dev_err(dev, "no AFG or MFG node found\n");
87 err = -ENODEV;
88 goto error;
89 }
90
91 fg = codec->afg ? codec->afg : codec->mfg;
92
93 err = snd_hdac_refresh_widgets(codec);
94 if (err < 0)
95 goto error;
96
97 codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE);
98
99 if (codec->subsystem_id == -1 || codec->subsystem_id == 0)
100 snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0,
101 &codec->subsystem_id);
102
103 err = get_codec_vendor_name(codec);
104 if (err < 0)
105 goto error;
106
107 codec->chip_name = kasprintf(GFP_KERNEL, "ID %x",
108 codec->vendor_id & 0xffff);
109 if (!codec->chip_name) {
110 err = -ENOMEM;
111 goto error;
112 }
113
114 return 0;
115
116 error:
117 put_device(&codec->dev);
118 return err;
119}
120EXPORT_SYMBOL_GPL(snd_hdac_device_init);
121
122
123
124
125
126void snd_hdac_device_exit(struct hdac_device *codec)
127{
128 pm_runtime_put_noidle(&codec->dev);
129 snd_hdac_bus_remove_device(codec->bus, codec);
130 kfree(codec->vendor_name);
131 kfree(codec->chip_name);
132}
133EXPORT_SYMBOL_GPL(snd_hdac_device_exit);
134
135
136
137
138
139int snd_hdac_device_register(struct hdac_device *codec)
140{
141 int err;
142
143 err = device_add(&codec->dev);
144 if (err < 0)
145 return err;
146 mutex_lock(&codec->widget_lock);
147 err = hda_widget_sysfs_init(codec);
148 mutex_unlock(&codec->widget_lock);
149 if (err < 0) {
150 device_del(&codec->dev);
151 return err;
152 }
153
154 return 0;
155}
156EXPORT_SYMBOL_GPL(snd_hdac_device_register);
157
158
159
160
161
162void snd_hdac_device_unregister(struct hdac_device *codec)
163{
164 if (device_is_registered(&codec->dev)) {
165 mutex_lock(&codec->widget_lock);
166 hda_widget_sysfs_exit(codec);
167 mutex_unlock(&codec->widget_lock);
168 device_del(&codec->dev);
169 snd_hdac_bus_remove_device(codec->bus, codec);
170 }
171}
172EXPORT_SYMBOL_GPL(snd_hdac_device_unregister);
173
174
175
176
177
178
179
180
181int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name)
182{
183 char *newname;
184
185 if (!name)
186 return 0;
187 newname = kstrdup(name, GFP_KERNEL);
188 if (!newname)
189 return -ENOMEM;
190 kfree(codec->chip_name);
191 codec->chip_name = newname;
192 return 0;
193}
194EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name);
195
196
197
198
199
200
201
202
203
204int snd_hdac_codec_modalias(struct hdac_device *codec, char *buf, size_t size)
205{
206 return snprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n",
207 codec->vendor_id, codec->revision_id, codec->type);
208}
209EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias);
210
211
212
213
214
215
216
217
218
219
220
221unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
222 unsigned int verb, unsigned int parm)
223{
224 u32 val, addr;
225
226 addr = codec->addr;
227 if ((addr & ~0xf) || (nid & ~0x7f) ||
228 (verb & ~0xfff) || (parm & ~0xffff)) {
229 dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n",
230 addr, nid, verb, parm);
231 return -1;
232 }
233
234 val = addr << 28;
235 val |= (u32)nid << 20;
236 val |= verb << 8;
237 val |= parm;
238 return val;
239}
240EXPORT_SYMBOL_GPL(snd_hdac_make_cmd);
241
242
243
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251
252
253
254int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
255 unsigned int flags, unsigned int *res)
256{
257 if (codec->exec_verb)
258 return codec->exec_verb(codec, cmd, flags, res);
259 return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res);
260}
261EXPORT_SYMBOL_GPL(snd_hdac_exec_verb);
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263
264
265
266
267
268
269
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271
272
273
274int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
275 unsigned int verb, unsigned int parm, unsigned int *res)
276{
277 unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm);
278
279 return snd_hdac_exec_verb(codec, cmd, 0, res);
280}
281EXPORT_SYMBOL_GPL(snd_hdac_read);
282
283
284
285
286
287
288int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
289 unsigned int *res)
290{
291 unsigned int cmd;
292
293 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
294 return snd_hdac_regmap_read_raw(codec, cmd, res);
295}
296EXPORT_SYMBOL_GPL(_snd_hdac_read_parm);
297
298
299
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301
302
303
304
305
306
307int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
308 int parm)
309{
310 unsigned int cmd, val;
311
312 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
313 if (snd_hdac_regmap_read_raw_uncached(codec, cmd, &val) < 0)
314 return -1;
315 return val;
316}
317EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached);
318
319
320
321
322
323
324
325
326int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
327 unsigned int parm, unsigned int val)
328{
329 unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm;
330 int err;
331
332 if (!codec->regmap)
333 return -EINVAL;
334
335 codec->caps_overwriting = true;
336 err = snd_hdac_regmap_write_raw(codec, verb, val);
337 codec->caps_overwriting = false;
338 return err;
339}
340EXPORT_SYMBOL_GPL(snd_hdac_override_parm);
341
342
343
344
345
346
347
348
349
350
351int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
352 hda_nid_t *start_id)
353{
354 unsigned int parm;
355
356 parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT);
357 if (parm == -1) {
358 *start_id = 0;
359 return 0;
360 }
361 *start_id = (parm >> 16) & 0x7fff;
362 return (int)(parm & 0x7fff);
363}
364EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes);
365
366
367
368
369static void setup_fg_nodes(struct hdac_device *codec)
370{
371 int i, total_nodes, function_id;
372 hda_nid_t nid;
373
374 total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
375 for (i = 0; i < total_nodes; i++, nid++) {
376 function_id = snd_hdac_read_parm(codec, nid,
377 AC_PAR_FUNCTION_TYPE);
378 switch (function_id & 0xff) {
379 case AC_GRP_AUDIO_FUNCTION:
380 codec->afg = nid;
381 codec->afg_function_id = function_id & 0xff;
382 codec->afg_unsol = (function_id >> 8) & 1;
383 break;
384 case AC_GRP_MODEM_FUNCTION:
385 codec->mfg = nid;
386 codec->mfg_function_id = function_id & 0xff;
387 codec->mfg_unsol = (function_id >> 8) & 1;
388 break;
389 default:
390 break;
391 }
392 }
393}
394
395
396
397
398
399int snd_hdac_refresh_widgets(struct hdac_device *codec)
400{
401 hda_nid_t start_nid;
402 int nums, err = 0;
403
404
405
406
407
408 mutex_lock(&codec->widget_lock);
409 nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid);
410 if (!start_nid || nums <= 0 || nums >= 0xff) {
411 dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n",
412 codec->afg);
413 err = -EINVAL;
414 goto unlock;
415 }
416
417 err = hda_widget_sysfs_reinit(codec, start_nid, nums);
418 if (err < 0)
419 goto unlock;
420
421 codec->num_nodes = nums;
422 codec->start_nid = start_nid;
423 codec->end_nid = start_nid + nums;
424unlock:
425 mutex_unlock(&codec->widget_lock);
426 return err;
427}
428EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets);
429
430
431static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid)
432{
433 unsigned int wcaps = get_wcaps(codec, nid);
434 unsigned int parm;
435
436 if (!(wcaps & AC_WCAP_CONN_LIST) &&
437 get_wcaps_type(wcaps) != AC_WID_VOL_KNB)
438 return 0;
439
440 parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN);
441 if (parm == -1)
442 parm = 0;
443 return parm;
444}
445
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457
458
459int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
460 hda_nid_t *conn_list, int max_conns)
461{
462 unsigned int parm;
463 int i, conn_len, conns, err;
464 unsigned int shift, num_elems, mask;
465 hda_nid_t prev_nid;
466 int null_count = 0;
467
468 parm = get_num_conns(codec, nid);
469 if (!parm)
470 return 0;
471
472 if (parm & AC_CLIST_LONG) {
473
474 shift = 16;
475 num_elems = 2;
476 } else {
477
478 shift = 8;
479 num_elems = 4;
480 }
481 conn_len = parm & AC_CLIST_LENGTH;
482 mask = (1 << (shift-1)) - 1;
483
484 if (!conn_len)
485 return 0;
486
487 if (conn_len == 1) {
488
489 err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0,
490 &parm);
491 if (err < 0)
492 return err;
493 if (conn_list)
494 conn_list[0] = parm & mask;
495 return 1;
496 }
497
498
499 conns = 0;
500 prev_nid = 0;
501 for (i = 0; i < conn_len; i++) {
502 int range_val;
503 hda_nid_t val, n;
504
505 if (i % num_elems == 0) {
506 err = snd_hdac_read(codec, nid,
507 AC_VERB_GET_CONNECT_LIST, i,
508 &parm);
509 if (err < 0)
510 return -EIO;
511 }
512 range_val = !!(parm & (1 << (shift-1)));
513 val = parm & mask;
514 if (val == 0 && null_count++) {
515 dev_dbg(&codec->dev,
516 "invalid CONNECT_LIST verb %x[%i]:%x\n",
517 nid, i, parm);
518 return 0;
519 }
520 parm >>= shift;
521 if (range_val) {
522
523 if (!prev_nid || prev_nid >= val) {
524 dev_warn(&codec->dev,
525 "invalid dep_range_val %x:%x\n",
526 prev_nid, val);
527 continue;
528 }
529 for (n = prev_nid + 1; n <= val; n++) {
530 if (conn_list) {
531 if (conns >= max_conns)
532 return -ENOSPC;
533 conn_list[conns] = n;
534 }
535 conns++;
536 }
537 } else {
538 if (conn_list) {
539 if (conns >= max_conns)
540 return -ENOSPC;
541 conn_list[conns] = val;
542 }
543 conns++;
544 }
545 prev_nid = val;
546 }
547 return conns;
548}
549EXPORT_SYMBOL_GPL(snd_hdac_get_connections);
550
551#ifdef CONFIG_PM
552
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561
562int snd_hdac_power_up(struct hdac_device *codec)
563{
564 return pm_runtime_get_sync(&codec->dev);
565}
566EXPORT_SYMBOL_GPL(snd_hdac_power_up);
567
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573
574int snd_hdac_power_down(struct hdac_device *codec)
575{
576 struct device *dev = &codec->dev;
577
578 pm_runtime_mark_last_busy(dev);
579 return pm_runtime_put_autosuspend(dev);
580}
581EXPORT_SYMBOL_GPL(snd_hdac_power_down);
582
583
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592
593
594int snd_hdac_power_up_pm(struct hdac_device *codec)
595{
596 if (!atomic_inc_not_zero(&codec->in_pm))
597 return snd_hdac_power_up(codec);
598 return 0;
599}
600EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm);
601
602
603
604
605
606int snd_hdac_keep_power_up(struct hdac_device *codec)
607{
608 if (!atomic_inc_not_zero(&codec->in_pm)) {
609 int ret = pm_runtime_get_if_in_use(&codec->dev);
610 if (!ret)
611 return -1;
612 if (ret < 0)
613 return 0;
614 }
615 return 1;
616}
617
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623
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625
626
627int snd_hdac_power_down_pm(struct hdac_device *codec)
628{
629 if (atomic_dec_if_positive(&codec->in_pm) < 0)
630 return snd_hdac_power_down(codec);
631 return 0;
632}
633EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm);
634#endif
635
636
637struct hda_vendor_id {
638 unsigned int id;
639 const char *name;
640};
641
642static struct hda_vendor_id hda_vendor_ids[] = {
643 { 0x1002, "ATI" },
644 { 0x1013, "Cirrus Logic" },
645 { 0x1057, "Motorola" },
646 { 0x1095, "Silicon Image" },
647 { 0x10de, "Nvidia" },
648 { 0x10ec, "Realtek" },
649 { 0x1102, "Creative" },
650 { 0x1106, "VIA" },
651 { 0x111d, "IDT" },
652 { 0x11c1, "LSI" },
653 { 0x11d4, "Analog Devices" },
654 { 0x13f6, "C-Media" },
655 { 0x14f1, "Conexant" },
656 { 0x17e8, "Chrontel" },
657 { 0x1854, "LG" },
658 { 0x1aec, "Wolfson Microelectronics" },
659 { 0x1af4, "QEMU" },
660 { 0x434d, "C-Media" },
661 { 0x8086, "Intel" },
662 { 0x8384, "SigmaTel" },
663 {}
664};
665
666
667static int get_codec_vendor_name(struct hdac_device *codec)
668{
669 const struct hda_vendor_id *c;
670 u16 vendor_id = codec->vendor_id >> 16;
671
672 for (c = hda_vendor_ids; c->id; c++) {
673 if (c->id == vendor_id) {
674 codec->vendor_name = kstrdup(c->name, GFP_KERNEL);
675 return codec->vendor_name ? 0 : -ENOMEM;
676 }
677 }
678
679 codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id);
680 return codec->vendor_name ? 0 : -ENOMEM;
681}
682
683
684
685
686struct hda_rate_tbl {
687 unsigned int hz;
688 unsigned int alsa_bits;
689 unsigned int hda_fmt;
690};
691
692
693#define HDA_RATE(base, mult, div) \
694 (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \
695 (((div) - 1) << AC_FMT_DIV_SHIFT))
696
697static struct hda_rate_tbl rate_bits[] = {
698
699
700
701 { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) },
702 { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) },
703 { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) },
704 { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) },
705 { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) },
706 { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) },
707 { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) },
708 { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) },
709 { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) },
710 { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) },
711 { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) },
712#define AC_PAR_PCM_RATE_BITS 11
713
714
715
716 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) },
717
718 { 0 }
719};
720
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731
732
733unsigned int snd_hdac_calc_stream_format(unsigned int rate,
734 unsigned int channels,
735 snd_pcm_format_t format,
736 unsigned int maxbps,
737 unsigned short spdif_ctls)
738{
739 int i;
740 unsigned int val = 0;
741
742 for (i = 0; rate_bits[i].hz; i++)
743 if (rate_bits[i].hz == rate) {
744 val = rate_bits[i].hda_fmt;
745 break;
746 }
747 if (!rate_bits[i].hz)
748 return 0;
749
750 if (channels == 0 || channels > 8)
751 return 0;
752 val |= channels - 1;
753
754 switch (snd_pcm_format_width(format)) {
755 case 8:
756 val |= AC_FMT_BITS_8;
757 break;
758 case 16:
759 val |= AC_FMT_BITS_16;
760 break;
761 case 20:
762 case 24:
763 case 32:
764 if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE)
765 val |= AC_FMT_BITS_32;
766 else if (maxbps >= 24)
767 val |= AC_FMT_BITS_24;
768 else
769 val |= AC_FMT_BITS_20;
770 break;
771 default:
772 return 0;
773 }
774
775 if (spdif_ctls & AC_DIG1_NONAUDIO)
776 val |= AC_FMT_TYPE_NON_PCM;
777
778 return val;
779}
780EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format);
781
782static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid)
783{
784 unsigned int val = 0;
785
786 if (nid != codec->afg &&
787 (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD))
788 val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM);
789 if (!val || val == -1)
790 val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM);
791 if (!val || val == -1)
792 return 0;
793 return val;
794}
795
796static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid)
797{
798 unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM);
799
800 if (!streams || streams == -1)
801 streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM);
802 if (!streams || streams == -1)
803 return 0;
804 return streams;
805}
806
807
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818
819
820int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
821 u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
822{
823 unsigned int i, val, wcaps;
824
825 wcaps = get_wcaps(codec, nid);
826 val = query_pcm_param(codec, nid);
827
828 if (ratesp) {
829 u32 rates = 0;
830 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) {
831 if (val & (1 << i))
832 rates |= rate_bits[i].alsa_bits;
833 }
834 if (rates == 0) {
835 dev_err(&codec->dev,
836 "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n",
837 nid, val,
838 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0);
839 return -EIO;
840 }
841 *ratesp = rates;
842 }
843
844 if (formatsp || bpsp) {
845 u64 formats = 0;
846 unsigned int streams, bps;
847
848 streams = query_stream_param(codec, nid);
849 if (!streams)
850 return -EIO;
851
852 bps = 0;
853 if (streams & AC_SUPFMT_PCM) {
854 if (val & AC_SUPPCM_BITS_8) {
855 formats |= SNDRV_PCM_FMTBIT_U8;
856 bps = 8;
857 }
858 if (val & AC_SUPPCM_BITS_16) {
859 formats |= SNDRV_PCM_FMTBIT_S16_LE;
860 bps = 16;
861 }
862 if (wcaps & AC_WCAP_DIGITAL) {
863 if (val & AC_SUPPCM_BITS_32)
864 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
865 if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
866 formats |= SNDRV_PCM_FMTBIT_S32_LE;
867 if (val & AC_SUPPCM_BITS_24)
868 bps = 24;
869 else if (val & AC_SUPPCM_BITS_20)
870 bps = 20;
871 } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|
872 AC_SUPPCM_BITS_32)) {
873 formats |= SNDRV_PCM_FMTBIT_S32_LE;
874 if (val & AC_SUPPCM_BITS_32)
875 bps = 32;
876 else if (val & AC_SUPPCM_BITS_24)
877 bps = 24;
878 else if (val & AC_SUPPCM_BITS_20)
879 bps = 20;
880 }
881 }
882#if 0
883 if (streams & AC_SUPFMT_FLOAT32) {
884 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
885 if (!bps)
886 bps = 32;
887 }
888#endif
889 if (streams == AC_SUPFMT_AC3) {
890
891
892
893
894 formats |= SNDRV_PCM_FMTBIT_U8;
895 bps = 8;
896 }
897 if (formats == 0) {
898 dev_err(&codec->dev,
899 "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n",
900 nid, val,
901 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0,
902 streams);
903 return -EIO;
904 }
905 if (formatsp)
906 *formatsp = formats;
907 if (bpsp)
908 *bpsp = bps;
909 }
910
911 return 0;
912}
913EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm);
914
915
916
917
918
919
920
921
922
923
924
925bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
926 unsigned int format)
927{
928 int i;
929 unsigned int val = 0, rate, stream;
930
931 val = query_pcm_param(codec, nid);
932 if (!val)
933 return false;
934
935 rate = format & 0xff00;
936 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++)
937 if (rate_bits[i].hda_fmt == rate) {
938 if (val & (1 << i))
939 break;
940 return false;
941 }
942 if (i >= AC_PAR_PCM_RATE_BITS)
943 return false;
944
945 stream = query_stream_param(codec, nid);
946 if (!stream)
947 return false;
948
949 if (stream & AC_SUPFMT_PCM) {
950 switch (format & 0xf0) {
951 case 0x00:
952 if (!(val & AC_SUPPCM_BITS_8))
953 return false;
954 break;
955 case 0x10:
956 if (!(val & AC_SUPPCM_BITS_16))
957 return false;
958 break;
959 case 0x20:
960 if (!(val & AC_SUPPCM_BITS_20))
961 return false;
962 break;
963 case 0x30:
964 if (!(val & AC_SUPPCM_BITS_24))
965 return false;
966 break;
967 case 0x40:
968 if (!(val & AC_SUPPCM_BITS_32))
969 return false;
970 break;
971 default:
972 return false;
973 }
974 } else {
975
976 }
977
978 return true;
979}
980EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format);
981
982static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid,
983 int flags, unsigned int verb, unsigned int parm)
984{
985 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
986 unsigned int res;
987
988 if (snd_hdac_exec_verb(hdac, cmd, flags, &res))
989 return -1;
990
991 return res;
992}
993
994static int codec_write(struct hdac_device *hdac, hda_nid_t nid,
995 int flags, unsigned int verb, unsigned int parm)
996{
997 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
998
999 return snd_hdac_exec_verb(hdac, cmd, flags, NULL);
1000}
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
1015 int flags, unsigned int verb, unsigned int parm)
1016{
1017 return codec_read(hdac, nid, flags, verb, parm);
1018}
1019EXPORT_SYMBOL_GPL(snd_hdac_codec_read);
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
1034 int flags, unsigned int verb, unsigned int parm)
1035{
1036 return codec_write(hdac, nid, flags, verb, parm);
1037}
1038EXPORT_SYMBOL_GPL(snd_hdac_codec_write);
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050bool snd_hdac_check_power_state(struct hdac_device *hdac,
1051 hda_nid_t nid, unsigned int target_state)
1052{
1053 unsigned int state = codec_read(hdac, nid, 0,
1054 AC_VERB_GET_POWER_STATE, 0);
1055
1056 if (state & AC_PWRST_ERROR)
1057 return true;
1058 state = (state >> 4) & 0x0f;
1059 return (state == target_state);
1060}
1061EXPORT_SYMBOL_GPL(snd_hdac_check_power_state);
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072unsigned int snd_hdac_sync_power_state(struct hdac_device *codec,
1073 hda_nid_t nid, unsigned int power_state)
1074{
1075 unsigned long end_time = jiffies + msecs_to_jiffies(500);
1076 unsigned int state, actual_state, count;
1077
1078 for (count = 0; count < 500; count++) {
1079 state = snd_hdac_codec_read(codec, nid, 0,
1080 AC_VERB_GET_POWER_STATE, 0);
1081 if (state & AC_PWRST_ERROR) {
1082 msleep(20);
1083 break;
1084 }
1085 actual_state = (state >> 4) & 0x0f;
1086 if (actual_state == power_state)
1087 break;
1088 if (time_after_eq(jiffies, end_time))
1089 break;
1090
1091 msleep(1);
1092 }
1093 return state;
1094}
1095EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state);
1096