[ALSA] hda-codec - Code clean up
[linux-2.6.git] / sound / pci / hda / hda_codec.c
1 /*
2  * Universal Interface for Intel High Definition Audio Codec
3  *
4  * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
5  *
6  *
7  *  This driver is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; either version 2 of the License, or
10  *  (at your option) any later version.
11  *
12  *  This driver is distributed in the hope that it will be useful,
13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *  GNU General Public License for more details.
16  *
17  *  You should have received a copy of the GNU General Public License
18  *  along with this program; if not, write to the Free Software
19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  */
21
22 #include <sound/driver.h>
23 #include <linux/init.h>
24 #include <linux/delay.h>
25 #include <linux/slab.h>
26 #include <linux/pci.h>
27 #include <linux/moduleparam.h>
28 #include <sound/core.h>
29 #include "hda_codec.h"
30 #include <sound/asoundef.h>
31 #include <sound/initval.h>
32 #include "hda_local.h"
33
34
35 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
36 MODULE_DESCRIPTION("Universal interface for High Definition Audio Codec");
37 MODULE_LICENSE("GPL");
38
39
40 /*
41  * vendor / preset table
42  */
43
44 struct hda_vendor_id {
45         unsigned int id;
46         const char *name;
47 };
48
49 /* codec vendor labels */
50 static struct hda_vendor_id hda_vendor_ids[] = {
51         { 0x10ec, "Realtek" },
52         { 0x11d4, "Analog Devices" },
53         { 0x13f6, "C-Media" },
54         { 0x434d, "C-Media" },
55         { 0x8384, "SigmaTel" },
56         {} /* terminator */
57 };
58
59 /* codec presets */
60 #include "hda_patch.h"
61
62
63 /**
64  * snd_hda_codec_read - send a command and get the response
65  * @codec: the HDA codec
66  * @nid: NID to send the command
67  * @direct: direct flag
68  * @verb: the verb to send
69  * @parm: the parameter for the verb
70  *
71  * Send a single command and read the corresponding response.
72  *
73  * Returns the obtained response value, or -1 for an error.
74  */
75 unsigned int snd_hda_codec_read(struct hda_codec *codec, hda_nid_t nid, int direct,
76                                 unsigned int verb, unsigned int parm)
77 {
78         unsigned int res;
79         down(&codec->bus->cmd_mutex);
80         if (! codec->bus->ops.command(codec, nid, direct, verb, parm))
81                 res = codec->bus->ops.get_response(codec);
82         else
83                 res = (unsigned int)-1;
84         up(&codec->bus->cmd_mutex);
85         return res;
86 }
87
88 /**
89  * snd_hda_codec_write - send a single command without waiting for response
90  * @codec: the HDA codec
91  * @nid: NID to send the command
92  * @direct: direct flag
93  * @verb: the verb to send
94  * @parm: the parameter for the verb
95  *
96  * Send a single command without waiting for response.
97  *
98  * Returns 0 if successful, or a negative error code.
99  */
100 int snd_hda_codec_write(struct hda_codec *codec, hda_nid_t nid, int direct,
101                          unsigned int verb, unsigned int parm)
102 {
103         int err;
104         down(&codec->bus->cmd_mutex);
105         err = codec->bus->ops.command(codec, nid, direct, verb, parm);
106         up(&codec->bus->cmd_mutex);
107         return err;
108 }
109
110 /**
111  * snd_hda_sequence_write - sequence writes
112  * @codec: the HDA codec
113  * @seq: VERB array to send
114  *
115  * Send the commands sequentially from the given array.
116  * The array must be terminated with NID=0.
117  */
118 void snd_hda_sequence_write(struct hda_codec *codec, const struct hda_verb *seq)
119 {
120         for (; seq->nid; seq++)
121                 snd_hda_codec_write(codec, seq->nid, 0, seq->verb, seq->param);
122 }
123
124 /**
125  * snd_hda_get_sub_nodes - get the range of sub nodes
126  * @codec: the HDA codec
127  * @nid: NID to parse
128  * @start_id: the pointer to store the start NID
129  *
130  * Parse the NID and store the start NID of its sub-nodes.
131  * Returns the number of sub-nodes.
132  */
133 int snd_hda_get_sub_nodes(struct hda_codec *codec, hda_nid_t nid, hda_nid_t *start_id)
134 {
135         unsigned int parm;
136
137         parm = snd_hda_param_read(codec, nid, AC_PAR_NODE_COUNT);
138         *start_id = (parm >> 16) & 0x7fff;
139         return (int)(parm & 0x7fff);
140 }
141
142 /**
143  * snd_hda_get_connections - get connection list
144  * @codec: the HDA codec
145  * @nid: NID to parse
146  * @conn_list: connection list array
147  * @max_conns: max. number of connections to store
148  *
149  * Parses the connection list of the given widget and stores the list
150  * of NIDs.
151  *
152  * Returns the number of connections, or a negative error code.
153  */
154 int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
155                             hda_nid_t *conn_list, int max_conns)
156 {
157         unsigned int parm;
158         int i, j, conn_len, num_tupples, conns;
159         unsigned int shift, num_elems, mask;
160
161         snd_assert(conn_list && max_conns > 0, return -EINVAL);
162
163         parm = snd_hda_param_read(codec, nid, AC_PAR_CONNLIST_LEN);
164         if (parm & AC_CLIST_LONG) {
165                 /* long form */
166                 shift = 16;
167                 num_elems = 2;
168         } else {
169                 /* short form */
170                 shift = 8;
171                 num_elems = 4;
172         }
173         conn_len = parm & AC_CLIST_LENGTH;
174         num_tupples = num_elems / 2;
175         mask = (1 << (shift-1)) - 1;
176
177         if (! conn_len)
178                 return 0; /* no connection */
179
180         if (conn_len == 1) {
181                 /* single connection */
182                 parm = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONNECT_LIST, 0);
183                 conn_list[0] = parm & mask;
184                 return 1;
185         }
186
187         /* multi connection */
188         conns = 0;
189         for (i = 0; i < conn_len; i += num_elems) {
190                 parm = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONNECT_LIST, i);
191                 for (j = 0; j < num_tupples; j++) {
192                         int range_val;
193                         hda_nid_t val1, val2, n;
194                         range_val = parm & (1 << (shift-1)); /* ranges */
195                         val1 = parm & mask;
196                         parm >>= shift;
197                         val2 = parm & mask;
198                         parm >>= shift;
199                         if (range_val) {
200                                 /* ranges between val1 and val2 */
201                                 if (val1 > val2) {
202                                         snd_printk(KERN_WARNING "hda_codec: invalid dep_range_val %x:%x\n", val1, val2);
203                                         continue;
204                                 }
205                                 for (n = val1; n <= val2; n++) {
206                                         if (conns >= max_conns)
207                                                 return -EINVAL;
208                                         conn_list[conns++] = n;
209                                 }
210                         } else {
211                                 if (! val1)
212                                         break;
213                                 if (conns >= max_conns)
214                                         return -EINVAL;
215                                 conn_list[conns++] = val1;
216                                 if (! val2)
217                                         break;
218                                 if (conns >= max_conns)
219                                         return -EINVAL;
220                                 conn_list[conns++] = val2;
221                         }
222                 }
223         }
224         return conns;
225 }
226
227
228 /**
229  * snd_hda_queue_unsol_event - add an unsolicited event to queue
230  * @bus: the BUS
231  * @res: unsolicited event (lower 32bit of RIRB entry)
232  * @res_ex: codec addr and flags (upper 32bit or RIRB entry)
233  *
234  * Adds the given event to the queue.  The events are processed in
235  * the workqueue asynchronously.  Call this function in the interrupt
236  * hanlder when RIRB receives an unsolicited event.
237  *
238  * Returns 0 if successful, or a negative error code.
239  */
240 int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex)
241 {
242         struct hda_bus_unsolicited *unsol;
243         unsigned int wp;
244
245         if ((unsol = bus->unsol) == NULL)
246                 return 0;
247
248         wp = (unsol->wp + 1) % HDA_UNSOL_QUEUE_SIZE;
249         unsol->wp = wp;
250
251         wp <<= 1;
252         unsol->queue[wp] = res;
253         unsol->queue[wp + 1] = res_ex;
254
255         queue_work(unsol->workq, &unsol->work);
256
257         return 0;
258 }
259
260 /*
261  * process queueud unsolicited events
262  */
263 static void process_unsol_events(void *data)
264 {
265         struct hda_bus *bus = data;
266         struct hda_bus_unsolicited *unsol = bus->unsol;
267         struct hda_codec *codec;
268         unsigned int rp, caddr, res;
269
270         while (unsol->rp != unsol->wp) {
271                 rp = (unsol->rp + 1) % HDA_UNSOL_QUEUE_SIZE;
272                 unsol->rp = rp;
273                 rp <<= 1;
274                 res = unsol->queue[rp];
275                 caddr = unsol->queue[rp + 1];
276                 if (! (caddr & (1 << 4))) /* no unsolicited event? */
277                         continue;
278                 codec = bus->caddr_tbl[caddr & 0x0f];
279                 if (codec && codec->patch_ops.unsol_event)
280                         codec->patch_ops.unsol_event(codec, res);
281         }
282 }
283
284 /*
285  * initialize unsolicited queue
286  */
287 static int init_unsol_queue(struct hda_bus *bus)
288 {
289         struct hda_bus_unsolicited *unsol;
290
291         unsol = kcalloc(1, sizeof(*unsol), GFP_KERNEL);
292         if (! unsol) {
293                 snd_printk(KERN_ERR "hda_codec: can't allocate unsolicited queue\n");
294                 return -ENOMEM;
295         }
296         unsol->workq = create_workqueue("hda_codec");
297         if (! unsol->workq) {
298                 snd_printk(KERN_ERR "hda_codec: can't create workqueue\n");
299                 kfree(unsol);
300                 return -ENOMEM;
301         }
302         INIT_WORK(&unsol->work, process_unsol_events, bus);
303         bus->unsol = unsol;
304         return 0;
305 }
306
307 /*
308  * destructor
309  */
310 static void snd_hda_codec_free(struct hda_codec *codec);
311
312 static int snd_hda_bus_free(struct hda_bus *bus)
313 {
314         struct list_head *p, *n;
315
316         if (! bus)
317                 return 0;
318         if (bus->unsol) {
319                 destroy_workqueue(bus->unsol->workq);
320                 kfree(bus->unsol);
321         }
322         list_for_each_safe(p, n, &bus->codec_list) {
323                 struct hda_codec *codec = list_entry(p, struct hda_codec, list);
324                 snd_hda_codec_free(codec);
325         }
326         if (bus->ops.private_free)
327                 bus->ops.private_free(bus);
328         kfree(bus);
329         return 0;
330 }
331
332 static int snd_hda_bus_dev_free(snd_device_t *device)
333 {
334         struct hda_bus *bus = device->device_data;
335         return snd_hda_bus_free(bus);
336 }
337
338 /**
339  * snd_hda_bus_new - create a HDA bus
340  * @card: the card entry
341  * @temp: the template for hda_bus information
342  * @busp: the pointer to store the created bus instance
343  *
344  * Returns 0 if successful, or a negative error code.
345  */
346 int snd_hda_bus_new(snd_card_t *card, const struct hda_bus_template *temp,
347                     struct hda_bus **busp)
348 {
349         struct hda_bus *bus;
350         int err;
351         static snd_device_ops_t dev_ops = {
352                 .dev_free = snd_hda_bus_dev_free,
353         };
354
355         snd_assert(temp, return -EINVAL);
356         snd_assert(temp->ops.command && temp->ops.get_response, return -EINVAL);
357
358         if (busp)
359                 *busp = NULL;
360
361         bus = kcalloc(1, sizeof(*bus), GFP_KERNEL);
362         if (bus == NULL) {
363                 snd_printk(KERN_ERR "can't allocate struct hda_bus\n");
364                 return -ENOMEM;
365         }
366
367         bus->card = card;
368         bus->private_data = temp->private_data;
369         bus->pci = temp->pci;
370         bus->modelname = temp->modelname;
371         bus->ops = temp->ops;
372
373         init_MUTEX(&bus->cmd_mutex);
374         INIT_LIST_HEAD(&bus->codec_list);
375
376         init_unsol_queue(bus);
377
378         if ((err = snd_device_new(card, SNDRV_DEV_BUS, bus, &dev_ops)) < 0) {
379                 snd_hda_bus_free(bus);
380                 return err;
381         }
382         if (busp)
383                 *busp = bus;
384         return 0;
385 }
386
387
388 /*
389  * find a matching codec preset
390  */
391 static const struct hda_codec_preset *find_codec_preset(struct hda_codec *codec)
392 {
393         const struct hda_codec_preset **tbl, *preset;
394
395         for (tbl = hda_preset_tables; *tbl; tbl++) {
396                 for (preset = *tbl; preset->id; preset++) {
397                         u32 mask = preset->mask;
398                         if (! mask)
399                                 mask = ~0;
400                         if (preset->id == (codec->vendor_id & mask))
401                                 return preset;
402                 }
403         }
404         return NULL;
405 }
406
407 /*
408  * snd_hda_get_codec_name - store the codec name
409  */
410 void snd_hda_get_codec_name(struct hda_codec *codec,
411                             char *name, int namelen)
412 {
413         const struct hda_vendor_id *c;
414         const char *vendor = NULL;
415         u16 vendor_id = codec->vendor_id >> 16;
416         char tmp[16];
417
418         for (c = hda_vendor_ids; c->id; c++) {
419                 if (c->id == vendor_id) {
420                         vendor = c->name;
421                         break;
422                 }
423         }
424         if (! vendor) {
425                 sprintf(tmp, "Generic %04x", vendor_id);
426                 vendor = tmp;
427         }
428         if (codec->preset && codec->preset->name)
429                 snprintf(name, namelen, "%s %s", vendor, codec->preset->name);
430         else
431                 snprintf(name, namelen, "%s ID %x", vendor, codec->vendor_id & 0xffff);
432 }
433
434 /*
435  * look for an AFG and MFG nodes
436  */
437 static void setup_fg_nodes(struct hda_codec *codec)
438 {
439         int i, total_nodes;
440         hda_nid_t nid;
441
442         total_nodes = snd_hda_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
443         for (i = 0; i < total_nodes; i++, nid++) {
444                 switch((snd_hda_param_read(codec, nid, AC_PAR_FUNCTION_TYPE) & 0xff)) {
445                 case AC_GRP_AUDIO_FUNCTION:
446                         codec->afg = nid;
447                         break;
448                 case AC_GRP_MODEM_FUNCTION:
449                         codec->mfg = nid;
450                         break;
451                 default:
452                         break;
453                 }
454         }
455 }
456
457 /*
458  * codec destructor
459  */
460 static void snd_hda_codec_free(struct hda_codec *codec)
461 {
462         if (! codec)
463                 return;
464         list_del(&codec->list);
465         codec->bus->caddr_tbl[codec->addr] = NULL;
466         if (codec->patch_ops.free)
467                 codec->patch_ops.free(codec);
468         kfree(codec);
469 }
470
471 static void init_amp_hash(struct hda_codec *codec);
472
473 /**
474  * snd_hda_codec_new - create a HDA codec
475  * @bus: the bus to assign
476  * @codec_addr: the codec address
477  * @codecp: the pointer to store the generated codec
478  *
479  * Returns 0 if successful, or a negative error code.
480  */
481 int snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
482                       struct hda_codec **codecp)
483 {
484         struct hda_codec *codec;
485         char component[13];
486         int err;
487
488         snd_assert(bus, return -EINVAL);
489         snd_assert(codec_addr <= HDA_MAX_CODEC_ADDRESS, return -EINVAL);
490
491         if (bus->caddr_tbl[codec_addr]) {
492                 snd_printk(KERN_ERR "hda_codec: address 0x%x is already occupied\n", codec_addr);
493                 return -EBUSY;
494         }
495
496         codec = kcalloc(1, sizeof(*codec), GFP_KERNEL);
497         if (codec == NULL) {
498                 snd_printk(KERN_ERR "can't allocate struct hda_codec\n");
499                 return -ENOMEM;
500         }
501
502         codec->bus = bus;
503         codec->addr = codec_addr;
504         init_MUTEX(&codec->spdif_mutex);
505         init_amp_hash(codec);
506
507         list_add_tail(&codec->list, &bus->codec_list);
508         bus->caddr_tbl[codec_addr] = codec;
509
510         codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT, AC_PAR_VENDOR_ID);
511         codec->subsystem_id = snd_hda_param_read(codec, AC_NODE_ROOT, AC_PAR_SUBSYSTEM_ID);
512         codec->revision_id = snd_hda_param_read(codec, AC_NODE_ROOT, AC_PAR_REV_ID);
513
514         setup_fg_nodes(codec);
515         if (! codec->afg && ! codec->mfg) {
516                 snd_printdd("hda_codec: no AFG or MFG node found\n");
517                 snd_hda_codec_free(codec);
518                 return -ENODEV;
519         }
520
521         codec->preset = find_codec_preset(codec);
522         if (! *bus->card->mixername)
523                 snd_hda_get_codec_name(codec, bus->card->mixername,
524                                        sizeof(bus->card->mixername));
525
526         if (codec->preset && codec->preset->patch)
527                 err = codec->preset->patch(codec);
528         else
529                 err = snd_hda_parse_generic_codec(codec);
530         if (err < 0) {
531                 snd_hda_codec_free(codec);
532                 return err;
533         }
534
535         snd_hda_codec_proc_new(codec);
536
537         sprintf(component, "HDA:%08x", codec->vendor_id);
538         snd_component_add(codec->bus->card, component);
539
540         if (codecp)
541                 *codecp = codec;
542         return 0;
543 }
544
545 /**
546  * snd_hda_codec_setup_stream - set up the codec for streaming
547  * @codec: the CODEC to set up
548  * @nid: the NID to set up
549  * @stream_tag: stream tag to pass, it's between 0x1 and 0xf.
550  * @channel_id: channel id to pass, zero based.
551  * @format: stream format.
552  */
553 void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid, u32 stream_tag,
554                                 int channel_id, int format)
555 {
556         if (! nid)
557                 return;
558
559         snd_printdd("hda_codec_setup_stream: NID=0x%x, stream=0x%x, channel=%d, format=0x%x\n",
560                     nid, stream_tag, channel_id, format);
561         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID,
562                             (stream_tag << 4) | channel_id);
563         msleep(1);
564         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, format);
565 }
566
567
568 /*
569  * amp access functions
570  */
571
572 /* FIXME: more better hash key? */
573 #define HDA_HASH_KEY(nid,dir,idx) (u32)((nid) + ((idx) << 16) + ((dir) << 24))
574 #define INFO_AMP_CAPS   (1<<0)
575 #define INFO_AMP_VOL(ch)        (1 << (1 + (ch)))
576
577 /* initialize the hash table */
578 static void init_amp_hash(struct hda_codec *codec)
579 {
580         memset(codec->amp_hash, 0xff, sizeof(codec->amp_hash));
581         codec->num_amp_entries = 0;
582 }
583
584 /* query the hash.  allocate an entry if not found. */
585 static struct hda_amp_info *get_alloc_amp_hash(struct hda_codec *codec, u32 key)
586 {
587         u16 idx = key % (u16)ARRAY_SIZE(codec->amp_hash);
588         u16 cur = codec->amp_hash[idx];
589         struct hda_amp_info *info;
590
591         while (cur != 0xffff) {
592                 info = &codec->amp_info[cur];
593                 if (info->key == key)
594                         return info;
595                 cur = info->next;
596         }
597
598         /* add a new hash entry */
599         if (codec->num_amp_entries >= ARRAY_SIZE(codec->amp_info)) {
600                 snd_printk(KERN_ERR "hda_codec: Tooooo many amps!\n");
601                 return NULL;
602         }
603         cur = codec->num_amp_entries++;
604         info = &codec->amp_info[cur];
605         info->key = key;
606         info->status = 0; /* not initialized yet */
607         info->next = codec->amp_hash[idx];
608         codec->amp_hash[idx] = cur;
609
610         return info;
611 }
612
613 /*
614  * query AMP capabilities for the given widget and direction
615  */
616 static u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
617 {
618         struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, 0));
619
620         if (! info)
621                 return 0;
622         if (! (info->status & INFO_AMP_CAPS)) {
623                 if (!(snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP) & AC_WCAP_AMP_OVRD))
624                         nid = codec->afg;
625                 info->amp_caps = snd_hda_param_read(codec, nid, direction == HDA_OUTPUT ?
626                                                     AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
627                 info->status |= INFO_AMP_CAPS;
628         }
629         return info->amp_caps;
630 }
631
632 /*
633  * read the current volume to info
634  * if the cache exists, read the cache value.
635  */
636 static unsigned int get_vol_mute(struct hda_codec *codec, struct hda_amp_info *info,
637                          hda_nid_t nid, int ch, int direction, int index)
638 {
639         u32 val, parm;
640
641         if (info->status & INFO_AMP_VOL(ch))
642                 return info->vol[ch];
643
644         parm = ch ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT;
645         parm |= direction == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT;
646         parm |= index;
647         val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_AMP_GAIN_MUTE, parm);
648         info->vol[ch] = val & 0xff;
649         info->status |= INFO_AMP_VOL(ch);
650         return info->vol[ch];
651 }
652
653 /*
654  * write the current volume in info to the h/w and update the cache
655  */
656 static void put_vol_mute(struct hda_codec *codec, struct hda_amp_info *info,
657                          hda_nid_t nid, int ch, int direction, int index, int val)
658 {
659         u32 parm;
660
661         parm = ch ? AC_AMP_SET_RIGHT : AC_AMP_SET_LEFT;
662         parm |= direction == HDA_OUTPUT ? AC_AMP_SET_OUTPUT : AC_AMP_SET_INPUT;
663         parm |= index << AC_AMP_SET_INDEX_SHIFT;
664         parm |= val;
665         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, parm);
666         info->vol[ch] = val;
667 }
668
669 /*
670  * read AMP value.  The volume is between 0 to 0x7f, 0x80 = mute bit.
671  */
672 static int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch, int direction, int index)
673 {
674         struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, index));
675         if (! info)
676                 return 0;
677         return get_vol_mute(codec, info, nid, ch, direction, index);
678 }
679
680 /*
681  * update the AMP value, mask = bit mask to set, val = the value
682  */
683 static int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch, int direction, int idx, int mask, int val)
684 {
685         struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, idx));
686
687         if (! info)
688                 return 0;
689         val &= mask;
690         val |= get_vol_mute(codec, info, nid, ch, direction, idx) & ~mask;
691         if (info->vol[ch] == val && ! codec->in_resume)
692                 return 0;
693         put_vol_mute(codec, info, nid, ch, direction, idx, val);
694         return 1;
695 }
696
697
698 /*
699  * AMP control callbacks
700  */
701 /* retrieve parameters from private_value */
702 #define get_amp_nid(kc)         ((kc)->private_value & 0xffff)
703 #define get_amp_channels(kc)    (((kc)->private_value >> 16) & 0x3)
704 #define get_amp_direction(kc)   (((kc)->private_value >> 18) & 0x1)
705 #define get_amp_index(kc)       (((kc)->private_value >> 19) & 0xf)
706
707 /* volume */
708 int snd_hda_mixer_amp_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
709 {
710         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
711         u16 nid = get_amp_nid(kcontrol);
712         u8 chs = get_amp_channels(kcontrol);
713         int dir = get_amp_direction(kcontrol);
714         u32 caps;
715
716         caps = query_amp_caps(codec, nid, dir);
717         caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT; /* num steps */
718         if (! caps) {
719                 printk(KERN_WARNING "hda_codec: num_steps = 0 for NID=0x%x\n", nid);
720                 return -EINVAL;
721         }
722         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
723         uinfo->count = chs == 3 ? 2 : 1;
724         uinfo->value.integer.min = 0;
725         uinfo->value.integer.max = caps;
726         return 0;
727 }
728
729 int snd_hda_mixer_amp_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
730 {
731         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
732         hda_nid_t nid = get_amp_nid(kcontrol);
733         int chs = get_amp_channels(kcontrol);
734         int dir = get_amp_direction(kcontrol);
735         int idx = get_amp_index(kcontrol);
736         long *valp = ucontrol->value.integer.value;
737
738         if (chs & 1)
739                 *valp++ = snd_hda_codec_amp_read(codec, nid, 0, dir, idx) & 0x7f;
740         if (chs & 2)
741                 *valp = snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x7f;
742         return 0;
743 }
744
745 int snd_hda_mixer_amp_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
746 {
747         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
748         hda_nid_t nid = get_amp_nid(kcontrol);
749         int chs = get_amp_channels(kcontrol);
750         int dir = get_amp_direction(kcontrol);
751         int idx = get_amp_index(kcontrol);
752         long *valp = ucontrol->value.integer.value;
753         int change = 0;
754
755         if (chs & 1) {
756                 change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
757                                                   0x7f, *valp);
758                 valp++;
759         }
760         if (chs & 2)
761                 change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
762                                                    0x7f, *valp);
763         return change;
764 }
765
766 /* switch */
767 int snd_hda_mixer_amp_switch_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
768 {
769         int chs = get_amp_channels(kcontrol);
770
771         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
772         uinfo->count = chs == 3 ? 2 : 1;
773         uinfo->value.integer.min = 0;
774         uinfo->value.integer.max = 1;
775         return 0;
776 }
777
778 int snd_hda_mixer_amp_switch_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
779 {
780         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
781         hda_nid_t nid = get_amp_nid(kcontrol);
782         int chs = get_amp_channels(kcontrol);
783         int dir = get_amp_direction(kcontrol);
784         int idx = get_amp_index(kcontrol);
785         long *valp = ucontrol->value.integer.value;
786
787         if (chs & 1)
788                 *valp++ = (snd_hda_codec_amp_read(codec, nid, 0, dir, idx) & 0x80) ? 0 : 1;
789         if (chs & 2)
790                 *valp = (snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x80) ? 0 : 1;
791         return 0;
792 }
793
794 int snd_hda_mixer_amp_switch_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
795 {
796         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
797         hda_nid_t nid = get_amp_nid(kcontrol);
798         int chs = get_amp_channels(kcontrol);
799         int dir = get_amp_direction(kcontrol);
800         int idx = get_amp_index(kcontrol);
801         long *valp = ucontrol->value.integer.value;
802         int change = 0;
803
804         if (chs & 1) {
805                 change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
806                                                   0x80, *valp ? 0 : 0x80);
807                 valp++;
808         }
809         if (chs & 2)
810                 change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
811                                                    0x80, *valp ? 0 : 0x80);
812         
813         return change;
814 }
815
816 /*
817  * SPDIF out controls
818  */
819
820 static int snd_hda_spdif_mask_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
821 {
822         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
823         uinfo->count = 1;
824         return 0;
825 }
826
827 static int snd_hda_spdif_cmask_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
828 {
829         ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
830                                            IEC958_AES0_NONAUDIO |
831                                            IEC958_AES0_CON_EMPHASIS_5015 |
832                                            IEC958_AES0_CON_NOT_COPYRIGHT;
833         ucontrol->value.iec958.status[1] = IEC958_AES1_CON_CATEGORY |
834                                            IEC958_AES1_CON_ORIGINAL;
835         return 0;
836 }
837
838 static int snd_hda_spdif_pmask_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
839 {
840         ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
841                                            IEC958_AES0_NONAUDIO |
842                                            IEC958_AES0_PRO_EMPHASIS_5015;
843         return 0;
844 }
845
846 static int snd_hda_spdif_default_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
847 {
848         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
849
850         ucontrol->value.iec958.status[0] = codec->spdif_status & 0xff;
851         ucontrol->value.iec958.status[1] = (codec->spdif_status >> 8) & 0xff;
852         ucontrol->value.iec958.status[2] = (codec->spdif_status >> 16) & 0xff;
853         ucontrol->value.iec958.status[3] = (codec->spdif_status >> 24) & 0xff;
854
855         return 0;
856 }
857
858 /* convert from SPDIF status bits to HDA SPDIF bits
859  * bit 0 (DigEn) is always set zero (to be filled later)
860  */
861 static unsigned short convert_from_spdif_status(unsigned int sbits)
862 {
863         unsigned short val = 0;
864
865         if (sbits & IEC958_AES0_PROFESSIONAL)
866                 val |= 1 << 6;
867         if (sbits & IEC958_AES0_NONAUDIO)
868                 val |= 1 << 5;
869         if (sbits & IEC958_AES0_PROFESSIONAL) {
870                 if ((sbits & IEC958_AES0_PRO_EMPHASIS) == IEC958_AES0_PRO_EMPHASIS_5015)
871                         val |= 1 << 3;
872         } else {
873                 if ((sbits & IEC958_AES0_CON_EMPHASIS) == IEC958_AES0_CON_EMPHASIS_5015)
874                         val |= 1 << 3;
875                 if (! (sbits & IEC958_AES0_CON_NOT_COPYRIGHT))
876                         val |= 1 << 4;
877                 if (sbits & (IEC958_AES1_CON_ORIGINAL << 8))
878                         val |= 1 << 7;
879                 val |= sbits & (IEC958_AES1_CON_CATEGORY << 8);
880         }
881         return val;
882 }
883
884 /* convert to SPDIF status bits from HDA SPDIF bits
885  */
886 static unsigned int convert_to_spdif_status(unsigned short val)
887 {
888         unsigned int sbits = 0;
889
890         if (val & (1 << 5))
891                 sbits |= IEC958_AES0_NONAUDIO;
892         if (val & (1 << 6))
893                 sbits |= IEC958_AES0_PROFESSIONAL;
894         if (sbits & IEC958_AES0_PROFESSIONAL) {
895                 if (sbits & (1 << 3))
896                         sbits |= IEC958_AES0_PRO_EMPHASIS_5015;
897         } else {
898                 if (val & (1 << 3))
899                         sbits |= IEC958_AES0_CON_EMPHASIS_5015;
900                 if (! (val & (1 << 4)))
901                         sbits |= IEC958_AES0_CON_NOT_COPYRIGHT;
902                 if (val & (1 << 7))
903                         sbits |= (IEC958_AES1_CON_ORIGINAL << 8);
904                 sbits |= val & (0x7f << 8);
905         }
906         return sbits;
907 }
908
909 static int snd_hda_spdif_default_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
910 {
911         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
912         hda_nid_t nid = kcontrol->private_value;
913         unsigned short val;
914         int change;
915
916         down(&codec->spdif_mutex);
917         codec->spdif_status = ucontrol->value.iec958.status[0] |
918                 ((unsigned int)ucontrol->value.iec958.status[1] << 8) |
919                 ((unsigned int)ucontrol->value.iec958.status[2] << 16) |
920                 ((unsigned int)ucontrol->value.iec958.status[3] << 24);
921         val = convert_from_spdif_status(codec->spdif_status);
922         val |= codec->spdif_ctls & 1;
923         change = codec->spdif_ctls != val;
924         codec->spdif_ctls = val;
925
926         if (change || codec->in_resume) {
927                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1, val & 0xff);
928                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_2, val >> 8);
929         }
930
931         up(&codec->spdif_mutex);
932         return change;
933 }
934
935 static int snd_hda_spdif_out_switch_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
936 {
937         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
938         uinfo->count = 1;
939         uinfo->value.integer.min = 0;
940         uinfo->value.integer.max = 1;
941         return 0;
942 }
943
944 static int snd_hda_spdif_out_switch_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
945 {
946         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
947
948         ucontrol->value.integer.value[0] = codec->spdif_ctls & 1;
949         return 0;
950 }
951
952 static int snd_hda_spdif_out_switch_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
953 {
954         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
955         hda_nid_t nid = kcontrol->private_value;
956         unsigned short val;
957         int change;
958
959         down(&codec->spdif_mutex);
960         val = codec->spdif_ctls & ~1;
961         if (ucontrol->value.integer.value[0])
962                 val |= 1;
963         change = codec->spdif_ctls != val;
964         if (change || codec->in_resume) {
965                 codec->spdif_ctls = val;
966                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1, val & 0xff);
967                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE,
968                                     AC_AMP_SET_RIGHT | AC_AMP_SET_LEFT |
969                                     AC_AMP_SET_OUTPUT | ((val & 1) ? 0 : 0x80));
970         }
971         up(&codec->spdif_mutex);
972         return change;
973 }
974
975 static snd_kcontrol_new_t dig_mixes[] = {
976         {
977                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
978                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
979                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
980                 .info = snd_hda_spdif_mask_info,
981                 .get = snd_hda_spdif_cmask_get,
982         },
983         {
984                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
985                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
986                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
987                 .info = snd_hda_spdif_mask_info,
988                 .get = snd_hda_spdif_pmask_get,
989         },
990         {
991                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
992                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
993                 .info = snd_hda_spdif_mask_info,
994                 .get = snd_hda_spdif_default_get,
995                 .put = snd_hda_spdif_default_put,
996         },
997         {
998                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
999                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH),
1000                 .info = snd_hda_spdif_out_switch_info,
1001                 .get = snd_hda_spdif_out_switch_get,
1002                 .put = snd_hda_spdif_out_switch_put,
1003         },
1004         { } /* end */
1005 };
1006
1007 /**
1008  * snd_hda_create_spdif_out_ctls - create Output SPDIF-related controls
1009  * @codec: the HDA codec
1010  * @nid: audio out widget NID
1011  *
1012  * Creates controls related with the SPDIF output.
1013  * Called from each patch supporting the SPDIF out.
1014  *
1015  * Returns 0 if successful, or a negative error code.
1016  */
1017 int snd_hda_create_spdif_out_ctls(struct hda_codec *codec, hda_nid_t nid)
1018 {
1019         int err;
1020         snd_kcontrol_t *kctl;
1021         snd_kcontrol_new_t *dig_mix;
1022
1023         for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
1024                 kctl = snd_ctl_new1(dig_mix, codec);
1025                 kctl->private_value = nid;
1026                 if ((err = snd_ctl_add(codec->bus->card, kctl)) < 0)
1027                         return err;
1028         }
1029         codec->spdif_ctls = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT, 0);
1030         codec->spdif_status = convert_to_spdif_status(codec->spdif_ctls);
1031         return 0;
1032 }
1033
1034 /*
1035  * SPDIF input
1036  */
1037
1038 #define snd_hda_spdif_in_switch_info    snd_hda_spdif_out_switch_info
1039
1040 static int snd_hda_spdif_in_switch_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1041 {
1042         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1043
1044         ucontrol->value.integer.value[0] = codec->spdif_in_enable;
1045         return 0;
1046 }
1047
1048 static int snd_hda_spdif_in_switch_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1049 {
1050         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1051         hda_nid_t nid = kcontrol->private_value;
1052         unsigned int val = !!ucontrol->value.integer.value[0];
1053         int change;
1054
1055         down(&codec->spdif_mutex);
1056         change = codec->spdif_in_enable != val;
1057         if (change || codec->in_resume) {
1058                 codec->spdif_in_enable = val;
1059                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1, val);
1060         }
1061         up(&codec->spdif_mutex);
1062         return change;
1063 }
1064
1065 static int snd_hda_spdif_in_status_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1066 {
1067         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1068         hda_nid_t nid = kcontrol->private_value;
1069         unsigned short val;
1070         unsigned int sbits;
1071
1072         val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT, 0);
1073         sbits = convert_to_spdif_status(val);
1074         ucontrol->value.iec958.status[0] = sbits;
1075         ucontrol->value.iec958.status[1] = sbits >> 8;
1076         ucontrol->value.iec958.status[2] = sbits >> 16;
1077         ucontrol->value.iec958.status[3] = sbits >> 24;
1078         return 0;
1079 }
1080
1081 static snd_kcontrol_new_t dig_in_ctls[] = {
1082         {
1083                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1084                 .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH),
1085                 .info = snd_hda_spdif_in_switch_info,
1086                 .get = snd_hda_spdif_in_switch_get,
1087                 .put = snd_hda_spdif_in_switch_put,
1088         },
1089         {
1090                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1091                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1092                 .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
1093                 .info = snd_hda_spdif_mask_info,
1094                 .get = snd_hda_spdif_in_status_get,
1095         },
1096         { } /* end */
1097 };
1098
1099 /**
1100  * snd_hda_create_spdif_in_ctls - create Input SPDIF-related controls
1101  * @codec: the HDA codec
1102  * @nid: audio in widget NID
1103  *
1104  * Creates controls related with the SPDIF input.
1105  * Called from each patch supporting the SPDIF in.
1106  *
1107  * Returns 0 if successful, or a negative error code.
1108  */
1109 int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid)
1110 {
1111         int err;
1112         snd_kcontrol_t *kctl;
1113         snd_kcontrol_new_t *dig_mix;
1114
1115         for (dig_mix = dig_in_ctls; dig_mix->name; dig_mix++) {
1116                 kctl = snd_ctl_new1(dig_mix, codec);
1117                 kctl->private_value = nid;
1118                 if ((err = snd_ctl_add(codec->bus->card, kctl)) < 0)
1119                         return err;
1120         }
1121         codec->spdif_in_enable = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT, 0) & 1;
1122         return 0;
1123 }
1124
1125
1126 /**
1127  * snd_hda_build_controls - build mixer controls
1128  * @bus: the BUS
1129  *
1130  * Creates mixer controls for each codec included in the bus.
1131  *
1132  * Returns 0 if successful, otherwise a negative error code.
1133  */
1134 int snd_hda_build_controls(struct hda_bus *bus)
1135 {
1136         struct list_head *p;
1137
1138         /* build controls */
1139         list_for_each(p, &bus->codec_list) {
1140                 struct hda_codec *codec = list_entry(p, struct hda_codec, list);
1141                 int err;
1142                 if (! codec->patch_ops.build_controls)
1143                         continue;
1144                 err = codec->patch_ops.build_controls(codec);
1145                 if (err < 0)
1146                         return err;
1147         }
1148
1149         /* initialize */
1150         list_for_each(p, &bus->codec_list) {
1151                 struct hda_codec *codec = list_entry(p, struct hda_codec, list);
1152                 int err;
1153                 if (! codec->patch_ops.init)
1154                         continue;
1155                 err = codec->patch_ops.init(codec);
1156                 if (err < 0)
1157                         return err;
1158         }
1159         return 0;
1160 }
1161
1162
1163 /*
1164  * stream formats
1165  */
1166 struct hda_rate_tbl {
1167         unsigned int hz;
1168         unsigned int alsa_bits;
1169         unsigned int hda_fmt;
1170 };
1171
1172 static struct hda_rate_tbl rate_bits[] = {
1173         /* rate in Hz, ALSA rate bitmask, HDA format value */
1174
1175         /* autodetected value used in snd_hda_query_supported_pcm */
1176         { 8000, SNDRV_PCM_RATE_8000, 0x0500 }, /* 1/6 x 48 */
1177         { 11025, SNDRV_PCM_RATE_11025, 0x4300 }, /* 1/4 x 44 */
1178         { 16000, SNDRV_PCM_RATE_16000, 0x0200 }, /* 1/3 x 48 */
1179         { 22050, SNDRV_PCM_RATE_22050, 0x4100 }, /* 1/2 x 44 */
1180         { 32000, SNDRV_PCM_RATE_32000, 0x0a00 }, /* 2/3 x 48 */
1181         { 44100, SNDRV_PCM_RATE_44100, 0x4000 }, /* 44 */
1182         { 48000, SNDRV_PCM_RATE_48000, 0x0000 }, /* 48 */
1183         { 88200, SNDRV_PCM_RATE_88200, 0x4800 }, /* 2 x 44 */
1184         { 96000, SNDRV_PCM_RATE_96000, 0x0800 }, /* 2 x 48 */
1185         { 176400, SNDRV_PCM_RATE_176400, 0x5800 },/* 4 x 44 */
1186         { 192000, SNDRV_PCM_RATE_192000, 0x1800 }, /* 4 x 48 */
1187
1188         /* not autodetected value */
1189         { 9600, SNDRV_PCM_RATE_KNOT, 0x0400 }, /* 1/5 x 48 */
1190
1191         { 0 } /* terminator */
1192 };
1193
1194 /**
1195  * snd_hda_calc_stream_format - calculate format bitset
1196  * @rate: the sample rate
1197  * @channels: the number of channels
1198  * @format: the PCM format (SNDRV_PCM_FORMAT_XXX)
1199  * @maxbps: the max. bps
1200  *
1201  * Calculate the format bitset from the given rate, channels and th PCM format.
1202  *
1203  * Return zero if invalid.
1204  */
1205 unsigned int snd_hda_calc_stream_format(unsigned int rate,
1206                                         unsigned int channels,
1207                                         unsigned int format,
1208                                         unsigned int maxbps)
1209 {
1210         int i;
1211         unsigned int val = 0;
1212
1213         for (i = 0; rate_bits[i].hz; i++)
1214                 if (rate_bits[i].hz == rate) {
1215                         val = rate_bits[i].hda_fmt;
1216                         break;
1217                 }
1218         if (! rate_bits[i].hz) {
1219                 snd_printdd("invalid rate %d\n", rate);
1220                 return 0;
1221         }
1222
1223         if (channels == 0 || channels > 8) {
1224                 snd_printdd("invalid channels %d\n", channels);
1225                 return 0;
1226         }
1227         val |= channels - 1;
1228
1229         switch (snd_pcm_format_width(format)) {
1230         case 8:  val |= 0x00; break;
1231         case 16: val |= 0x10; break;
1232         case 20:
1233         case 24:
1234         case 32:
1235                 if (maxbps >= 32)
1236                         val |= 0x40;
1237                 else if (maxbps >= 24)
1238                         val |= 0x30;
1239                 else
1240                         val |= 0x20;
1241                 break;
1242         default:
1243                 snd_printdd("invalid format width %d\n", snd_pcm_format_width(format));
1244                 return 0;
1245         }
1246
1247         return val;
1248 }
1249
1250 /**
1251  * snd_hda_query_supported_pcm - query the supported PCM rates and formats
1252  * @codec: the HDA codec
1253  * @nid: NID to query
1254  * @ratesp: the pointer to store the detected rate bitflags
1255  * @formatsp: the pointer to store the detected formats
1256  * @bpsp: the pointer to store the detected format widths
1257  *
1258  * Queries the supported PCM rates and formats.  The NULL @ratesp, @formatsp
1259  * or @bsps argument is ignored.
1260  *
1261  * Returns 0 if successful, otherwise a negative error code.
1262  */
1263 int snd_hda_query_supported_pcm(struct hda_codec *codec, hda_nid_t nid,
1264                                 u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
1265 {
1266         int i;
1267         unsigned int val, streams;
1268
1269         val = 0;
1270         if (nid != codec->afg &&
1271             snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP) & AC_WCAP_FORMAT_OVRD) {
1272                 val = snd_hda_param_read(codec, nid, AC_PAR_PCM);
1273                 if (val == -1)
1274                         return -EIO;
1275         }
1276         if (! val)
1277                 val = snd_hda_param_read(codec, codec->afg, AC_PAR_PCM);
1278
1279         if (ratesp) {
1280                 u32 rates = 0;
1281                 for (i = 0; rate_bits[i].hz; i++) {
1282                         if (val & (1 << i))
1283                                 rates |= rate_bits[i].alsa_bits;
1284                 }
1285                 *ratesp = rates;
1286         }
1287
1288         if (formatsp || bpsp) {
1289                 u64 formats = 0;
1290                 unsigned int bps;
1291                 unsigned int wcaps;
1292
1293                 wcaps = snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP);
1294                 streams = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
1295                 if (streams == -1)
1296                         return -EIO;
1297                 if (! streams) {
1298                         streams = snd_hda_param_read(codec, codec->afg, AC_PAR_STREAM);
1299                         if (streams == -1)
1300                                 return -EIO;
1301                 }
1302
1303                 bps = 0;
1304                 if (streams & AC_SUPFMT_PCM) {
1305                         if (val & AC_SUPPCM_BITS_8) {
1306                                 formats |= SNDRV_PCM_FMTBIT_U8;
1307                                 bps = 8;
1308                         }
1309                         if (val & AC_SUPPCM_BITS_16) {
1310                                 formats |= SNDRV_PCM_FMTBIT_S16_LE;
1311                                 bps = 16;
1312                         }
1313                         if (wcaps & AC_WCAP_DIGITAL) {
1314                                 if (val & AC_SUPPCM_BITS_32)
1315                                         formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
1316                                 if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
1317                                         formats |= SNDRV_PCM_FMTBIT_S32_LE;
1318                                 if (val & AC_SUPPCM_BITS_24)
1319                                         bps = 24;
1320                                 else if (val & AC_SUPPCM_BITS_20)
1321                                         bps = 20;
1322                         } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|AC_SUPPCM_BITS_32)) {
1323                                 formats |= SNDRV_PCM_FMTBIT_S32_LE;
1324                                 if (val & AC_SUPPCM_BITS_32)
1325                                         bps = 32;
1326                                 else if (val & AC_SUPPCM_BITS_20)
1327                                         bps = 20;
1328                                 else if (val & AC_SUPPCM_BITS_24)
1329                                         bps = 24;
1330                         }
1331                 }
1332                 else if (streams == AC_SUPFMT_FLOAT32) { /* should be exclusive */
1333                         formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
1334                         bps = 32;
1335                 } else if (streams == AC_SUPFMT_AC3) { /* should be exclusive */
1336                         /* temporary hack: we have still no proper support
1337                          * for the direct AC3 stream...
1338                          */
1339                         formats |= SNDRV_PCM_FMTBIT_U8;
1340                         bps = 8;
1341                 }
1342                 if (formatsp)
1343                         *formatsp = formats;
1344                 if (bpsp)
1345                         *bpsp = bps;
1346         }
1347
1348         return 0;
1349 }
1350
1351 /**
1352  * snd_hda_is_supported_format - check whether the given node supports the format val
1353  *
1354  * Returns 1 if supported, 0 if not.
1355  */
1356 int snd_hda_is_supported_format(struct hda_codec *codec, hda_nid_t nid,
1357                                 unsigned int format)
1358 {
1359         int i;
1360         unsigned int val = 0, rate, stream;
1361
1362         if (nid != codec->afg &&
1363             snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP) & AC_WCAP_FORMAT_OVRD) {
1364                 val = snd_hda_param_read(codec, nid, AC_PAR_PCM);
1365                 if (val == -1)
1366                         return 0;
1367         }
1368         if (! val) {
1369                 val = snd_hda_param_read(codec, codec->afg, AC_PAR_PCM);
1370                 if (val == -1)
1371                         return 0;
1372         }
1373
1374         rate = format & 0xff00;
1375         for (i = 0; rate_bits[i].hz; i++)
1376                 if (rate_bits[i].hda_fmt == rate) {
1377                         if (val & (1 << i))
1378                                 break;
1379                         return 0;
1380                 }
1381         if (! rate_bits[i].hz)
1382                 return 0;
1383
1384         stream = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
1385         if (stream == -1)
1386                 return 0;
1387         if (! stream && nid != codec->afg)
1388                 stream = snd_hda_param_read(codec, codec->afg, AC_PAR_STREAM);
1389         if (! stream || stream == -1)
1390                 return 0;
1391
1392         if (stream & AC_SUPFMT_PCM) {
1393                 switch (format & 0xf0) {
1394                 case 0x00:
1395                         if (! (val & AC_SUPPCM_BITS_8))
1396                                 return 0;
1397                         break;
1398                 case 0x10:
1399                         if (! (val & AC_SUPPCM_BITS_16))
1400                                 return 0;
1401                         break;
1402                 case 0x20:
1403                         if (! (val & AC_SUPPCM_BITS_20))
1404                                 return 0;
1405                         break;
1406                 case 0x30:
1407                         if (! (val & AC_SUPPCM_BITS_24))
1408                                 return 0;
1409                         break;
1410                 case 0x40:
1411                         if (! (val & AC_SUPPCM_BITS_32))
1412                                 return 0;
1413                         break;
1414                 default:
1415                         return 0;
1416                 }
1417         } else {
1418                 /* FIXME: check for float32 and AC3? */
1419         }
1420
1421         return 1;
1422 }
1423
1424 /*
1425  * PCM stuff
1426  */
1427 static int hda_pcm_default_open_close(struct hda_pcm_stream *hinfo,
1428                                       struct hda_codec *codec,
1429                                       snd_pcm_substream_t *substream)
1430 {
1431         return 0;
1432 }
1433
1434 static int hda_pcm_default_prepare(struct hda_pcm_stream *hinfo,
1435                                    struct hda_codec *codec,
1436                                    unsigned int stream_tag,
1437                                    unsigned int format,
1438                                    snd_pcm_substream_t *substream)
1439 {
1440         snd_hda_codec_setup_stream(codec, hinfo->nid, stream_tag, 0, format);
1441         return 0;
1442 }
1443
1444 static int hda_pcm_default_cleanup(struct hda_pcm_stream *hinfo,
1445                                    struct hda_codec *codec,
1446                                    snd_pcm_substream_t *substream)
1447 {
1448         snd_hda_codec_setup_stream(codec, hinfo->nid, 0, 0, 0);
1449         return 0;
1450 }
1451
1452 static int set_pcm_default_values(struct hda_codec *codec, struct hda_pcm_stream *info)
1453 {
1454         if (info->nid) {
1455                 /* query support PCM information from the given NID */
1456                 if (! info->rates || ! info->formats)
1457                         snd_hda_query_supported_pcm(codec, info->nid,
1458                                                     info->rates ? NULL : &info->rates,
1459                                                     info->formats ? NULL : &info->formats,
1460                                                     info->maxbps ? NULL : &info->maxbps);
1461         }
1462         if (info->ops.open == NULL)
1463                 info->ops.open = hda_pcm_default_open_close;
1464         if (info->ops.close == NULL)
1465                 info->ops.close = hda_pcm_default_open_close;
1466         if (info->ops.prepare == NULL) {
1467                 snd_assert(info->nid, return -EINVAL);
1468                 info->ops.prepare = hda_pcm_default_prepare;
1469         }
1470         if (info->ops.cleanup == NULL) {
1471                 snd_assert(info->nid, return -EINVAL);
1472                 info->ops.cleanup = hda_pcm_default_cleanup;
1473         }
1474         return 0;
1475 }
1476
1477 /**
1478  * snd_hda_build_pcms - build PCM information
1479  * @bus: the BUS
1480  *
1481  * Create PCM information for each codec included in the bus.
1482  *
1483  * The build_pcms codec patch is requested to set up codec->num_pcms and
1484  * codec->pcm_info properly.  The array is referred by the top-level driver
1485  * to create its PCM instances.
1486  * The allocated codec->pcm_info should be released in codec->patch_ops.free
1487  * callback.
1488  *
1489  * At least, substreams, channels_min and channels_max must be filled for
1490  * each stream.  substreams = 0 indicates that the stream doesn't exist.
1491  * When rates and/or formats are zero, the supported values are queried
1492  * from the given nid.  The nid is used also by the default ops.prepare
1493  * and ops.cleanup callbacks.
1494  *
1495  * The driver needs to call ops.open in its open callback.  Similarly,
1496  * ops.close is supposed to be called in the close callback.
1497  * ops.prepare should be called in the prepare or hw_params callback
1498  * with the proper parameters for set up.
1499  * ops.cleanup should be called in hw_free for clean up of streams.
1500  *
1501  * This function returns 0 if successfull, or a negative error code.
1502  */
1503 int snd_hda_build_pcms(struct hda_bus *bus)
1504 {
1505         struct list_head *p;
1506
1507         list_for_each(p, &bus->codec_list) {
1508                 struct hda_codec *codec = list_entry(p, struct hda_codec, list);
1509                 unsigned int pcm, s;
1510                 int err;
1511                 if (! codec->patch_ops.build_pcms)
1512                         continue;
1513                 err = codec->patch_ops.build_pcms(codec);
1514                 if (err < 0)
1515                         return err;
1516                 for (pcm = 0; pcm < codec->num_pcms; pcm++) {
1517                         for (s = 0; s < 2; s++) {
1518                                 struct hda_pcm_stream *info;
1519                                 info = &codec->pcm_info[pcm].stream[s];
1520                                 if (! info->substreams)
1521                                         continue;
1522                                 err = set_pcm_default_values(codec, info);
1523                                 if (err < 0)
1524                                         return err;
1525                         }
1526                 }
1527         }
1528         return 0;
1529 }
1530
1531
1532 /**
1533  * snd_hda_check_board_config - compare the current codec with the config table
1534  * @codec: the HDA codec
1535  * @tbl: configuration table, terminated by null entries
1536  *
1537  * Compares the modelname or PCI subsystem id of the current codec with the
1538  * given configuration table.  If a matching entry is found, returns its
1539  * config value (supposed to be 0 or positive).
1540  *
1541  * If no entries are matching, the function returns a negative value.
1542  */
1543 int snd_hda_check_board_config(struct hda_codec *codec, const struct hda_board_config *tbl)
1544 {
1545         const struct hda_board_config *c;
1546
1547         if (codec->bus->modelname) {
1548                 for (c = tbl; c->modelname || c->pci_subvendor; c++) {
1549                         if (c->modelname &&
1550                             ! strcmp(codec->bus->modelname, c->modelname)) {
1551                                 snd_printd(KERN_INFO "hda_codec: model '%s' is selected\n", c->modelname);
1552                                 return c->config;
1553                         }
1554                 }
1555         }
1556
1557         if (codec->bus->pci) {
1558                 u16 subsystem_vendor, subsystem_device;
1559                 pci_read_config_word(codec->bus->pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
1560                 pci_read_config_word(codec->bus->pci, PCI_SUBSYSTEM_ID, &subsystem_device);
1561                 for (c = tbl; c->modelname || c->pci_subvendor; c++) {
1562                         if (c->pci_subvendor == subsystem_vendor &&
1563                             (! c->pci_subdevice /* all match */||
1564                              (c->pci_subdevice == subsystem_device))) {
1565                                 snd_printdd(KERN_INFO "hda_codec: PCI %x:%x, codec config %d is selected\n",
1566                                             subsystem_vendor, subsystem_device, c->config);
1567                                 return c->config;
1568                         }
1569                 }
1570         }
1571         return -1;
1572 }
1573
1574 /**
1575  * snd_hda_add_new_ctls - create controls from the array
1576  * @codec: the HDA codec
1577  * @knew: the array of snd_kcontrol_new_t
1578  *
1579  * This helper function creates and add new controls in the given array.
1580  * The array must be terminated with an empty entry as terminator.
1581  *
1582  * Returns 0 if successful, or a negative error code.
1583  */
1584 int snd_hda_add_new_ctls(struct hda_codec *codec, snd_kcontrol_new_t *knew)
1585 {
1586         int err;
1587
1588         for (; knew->name; knew++) {
1589                 err = snd_ctl_add(codec->bus->card, snd_ctl_new1(knew, codec));
1590                 if (err < 0)
1591                         return err;
1592         }
1593         return 0;
1594 }
1595
1596
1597 /*
1598  * input MUX helper
1599  */
1600 int snd_hda_input_mux_info(const struct hda_input_mux *imux, snd_ctl_elem_info_t *uinfo)
1601 {
1602         unsigned int index;
1603
1604         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1605         uinfo->count = 1;
1606         uinfo->value.enumerated.items = imux->num_items;
1607         index = uinfo->value.enumerated.item;
1608         if (index >= imux->num_items)
1609                 index = imux->num_items - 1;
1610         strcpy(uinfo->value.enumerated.name, imux->items[index].label);
1611         return 0;
1612 }
1613
1614 int snd_hda_input_mux_put(struct hda_codec *codec, const struct hda_input_mux *imux,
1615                           snd_ctl_elem_value_t *ucontrol, hda_nid_t nid,
1616                           unsigned int *cur_val)
1617 {
1618         unsigned int idx;
1619
1620         idx = ucontrol->value.enumerated.item[0];
1621         if (idx >= imux->num_items)
1622                 idx = imux->num_items - 1;
1623         if (*cur_val == idx && ! codec->in_resume)
1624                 return 0;
1625         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CONNECT_SEL,
1626                             imux->items[idx].index);
1627         *cur_val = idx;
1628         return 1;
1629 }
1630
1631
1632 /*
1633  * Multi-channel / digital-out PCM helper functions
1634  */
1635
1636 /*
1637  * open the digital out in the exclusive mode
1638  */
1639 int snd_hda_multi_out_dig_open(struct hda_codec *codec, struct hda_multi_out *mout)
1640 {
1641         down(&codec->spdif_mutex);
1642         if (mout->dig_out_used) {
1643                 up(&codec->spdif_mutex);
1644                 return -EBUSY; /* already being used */
1645         }
1646         mout->dig_out_used = HDA_DIG_EXCLUSIVE;
1647         up(&codec->spdif_mutex);
1648         return 0;
1649 }
1650
1651 /*
1652  * release the digital out
1653  */
1654 int snd_hda_multi_out_dig_close(struct hda_codec *codec, struct hda_multi_out *mout)
1655 {
1656         down(&codec->spdif_mutex);
1657         mout->dig_out_used = 0;
1658         up(&codec->spdif_mutex);
1659         return 0;
1660 }
1661
1662 /*
1663  * set up more restrictions for analog out
1664  */
1665 int snd_hda_multi_out_analog_open(struct hda_codec *codec, struct hda_multi_out *mout,
1666                                   snd_pcm_substream_t *substream)
1667 {
1668         substream->runtime->hw.channels_max = mout->max_channels;
1669         return snd_pcm_hw_constraint_step(substream->runtime, 0,
1670                                           SNDRV_PCM_HW_PARAM_CHANNELS, 2);
1671 }
1672
1673 /*
1674  * set up the i/o for analog out
1675  * when the digital out is available, copy the front out to digital out, too.
1676  */
1677 int snd_hda_multi_out_analog_prepare(struct hda_codec *codec, struct hda_multi_out *mout,
1678                                      unsigned int stream_tag,
1679                                      unsigned int format,
1680                                      snd_pcm_substream_t *substream)
1681 {
1682         hda_nid_t *nids = mout->dac_nids;
1683         int chs = substream->runtime->channels;
1684         int i;
1685
1686         down(&codec->spdif_mutex);
1687         if (mout->dig_out_nid && mout->dig_out_used != HDA_DIG_EXCLUSIVE) {
1688                 if (chs == 2 &&
1689                     snd_hda_is_supported_format(codec, mout->dig_out_nid, format) &&
1690                     ! (codec->spdif_status & IEC958_AES0_NONAUDIO)) {
1691                         mout->dig_out_used = HDA_DIG_ANALOG_DUP;
1692                         /* setup digital receiver */
1693                         snd_hda_codec_setup_stream(codec, mout->dig_out_nid,
1694                                                    stream_tag, 0, format);
1695                 } else {
1696                         mout->dig_out_used = 0;
1697                         snd_hda_codec_setup_stream(codec, mout->dig_out_nid, 0, 0, 0);
1698                 }
1699         }
1700         up(&codec->spdif_mutex);
1701
1702         /* front */
1703         snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag, 0, format);
1704         if (mout->hp_nid)
1705                 /* headphone out will just decode front left/right (stereo) */
1706                 snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag, 0, format);
1707         /* surrounds */
1708         for (i = 1; i < mout->num_dacs; i++) {
1709                 if (chs >= (i + 1) * 2) /* independent out */
1710                         snd_hda_codec_setup_stream(codec, nids[i], stream_tag, i * 2,
1711                                                    format);
1712                 else /* copy front */
1713                         snd_hda_codec_setup_stream(codec, nids[i], stream_tag, 0,
1714                                                    format);
1715         }
1716         return 0;
1717 }
1718
1719 /*
1720  * clean up the setting for analog out
1721  */
1722 int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec, struct hda_multi_out *mout)
1723 {
1724         hda_nid_t *nids = mout->dac_nids;
1725         int i;
1726
1727         for (i = 0; i < mout->num_dacs; i++)
1728                 snd_hda_codec_setup_stream(codec, nids[i], 0, 0, 0);
1729         if (mout->hp_nid)
1730                 snd_hda_codec_setup_stream(codec, mout->hp_nid, 0, 0, 0);
1731         down(&codec->spdif_mutex);
1732         if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) {
1733                 snd_hda_codec_setup_stream(codec, mout->dig_out_nid, 0, 0, 0);
1734                 mout->dig_out_used = 0;
1735         }
1736         up(&codec->spdif_mutex);
1737         return 0;
1738 }
1739
1740 /*
1741  * Helper for automatic ping configuration
1742  */
1743 /* parse all pin widgets and store the useful pin nids to cfg */
1744 int snd_hda_parse_pin_def_config(struct hda_codec *codec, struct auto_pin_cfg *cfg)
1745 {
1746         hda_nid_t nid, nid_start;
1747         int i, j, nodes;
1748         short seq, sequences[4], assoc_line_out;
1749
1750         memset(cfg, 0, sizeof(*cfg));
1751
1752         memset(sequences, 0, sizeof(sequences));
1753         assoc_line_out = 0;
1754
1755         nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid_start);
1756         for (nid = nid_start; nid < nodes + nid_start; nid++) {
1757                 unsigned int wid_caps = snd_hda_param_read(codec, nid,
1758                                                            AC_PAR_AUDIO_WIDGET_CAP);
1759                 unsigned int wid_type = (wid_caps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
1760                 unsigned int def_conf;
1761                 short assoc, loc;
1762
1763                 /* read all default configuration for pin complex */
1764                 if (wid_type != AC_WID_PIN)
1765                         continue;
1766                 def_conf = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
1767                 if (get_defcfg_connect(def_conf) == AC_JACK_PORT_NONE)
1768                         continue;
1769                 loc = get_defcfg_location(def_conf);
1770                 switch (get_defcfg_device(def_conf)) {
1771                 case AC_JACK_LINE_OUT:
1772                 case AC_JACK_SPEAKER:
1773                         seq = get_defcfg_sequence(def_conf);
1774                         assoc = get_defcfg_association(def_conf);
1775                         if (! assoc)
1776                                 continue;
1777                         if (! assoc_line_out)
1778                                 assoc_line_out = assoc;
1779                         else if (assoc_line_out != assoc)
1780                                 continue;
1781                         if (cfg->line_outs >= ARRAY_SIZE(cfg->line_out_pins))
1782                                 continue;
1783                         cfg->line_out_pins[cfg->line_outs] = nid;
1784                         sequences[cfg->line_outs] = seq;
1785                         cfg->line_outs++;
1786                         break;
1787                 case AC_JACK_HP_OUT:
1788                         cfg->hp_pin = nid;
1789                         break;
1790                 case AC_JACK_MIC_IN:
1791                         if (loc == AC_JACK_LOC_FRONT)
1792                                 cfg->input_pins[AUTO_PIN_FRONT_MIC] = nid;
1793                         else
1794                                 cfg->input_pins[AUTO_PIN_MIC] = nid;
1795                         break;
1796                 case AC_JACK_LINE_IN:
1797                         if (loc == AC_JACK_LOC_FRONT)
1798                                 cfg->input_pins[AUTO_PIN_FRONT_LINE] = nid;
1799                         else
1800                                 cfg->input_pins[AUTO_PIN_LINE] = nid;
1801                         break;
1802                 case AC_JACK_CD:
1803                         cfg->input_pins[AUTO_PIN_CD] = nid;
1804                         break;
1805                 case AC_JACK_AUX:
1806                         cfg->input_pins[AUTO_PIN_AUX] = nid;
1807                         break;
1808                 case AC_JACK_SPDIF_OUT:
1809                         cfg->dig_out_pin = nid;
1810                         break;
1811                 case AC_JACK_SPDIF_IN:
1812                         cfg->dig_in_pin = nid;
1813                         break;
1814                 }
1815         }
1816
1817         /* sort by sequence */
1818         for (i = 0; i < cfg->line_outs; i++)
1819                 for (j = i + 1; j < cfg->line_outs; j++)
1820                         if (sequences[i] > sequences[j]) {
1821                                 seq = sequences[i];
1822                                 sequences[i] = sequences[j];
1823                                 sequences[j] = seq;
1824                                 nid = cfg->line_out_pins[i];
1825                                 cfg->line_out_pins[i] = cfg->line_out_pins[j];
1826                                 cfg->line_out_pins[j] = nid;
1827                         }
1828
1829         /* Reorder the surround channels
1830          * ALSA sequence is front/surr/clfe/side
1831          * HDA sequence is:
1832          *    4-ch: front/surr  =>  OK as it is
1833          *    6-ch: front/clfe/surr
1834          *    8-ch: front/clfe/side/surr
1835          */
1836         switch (cfg->line_outs) {
1837         case 3:
1838                 nid = cfg->line_out_pins[1];
1839                 cfg->line_out_pins[1] = cfg->line_out_pins[2];
1840                 cfg->line_out_pins[2] = nid;
1841                 break;
1842         case 4:
1843                 nid = cfg->line_out_pins[1];
1844                 cfg->line_out_pins[1] = cfg->line_out_pins[3];
1845                 cfg->line_out_pins[3] = cfg->line_out_pins[2];
1846                 cfg->line_out_pins[2] = nid;
1847                 break;
1848         }
1849
1850         return 0;
1851 }
1852
1853 #ifdef CONFIG_PM
1854 /*
1855  * power management
1856  */
1857
1858 /**
1859  * snd_hda_suspend - suspend the codecs
1860  * @bus: the HDA bus
1861  * @state: suspsend state
1862  *
1863  * Returns 0 if successful.
1864  */
1865 int snd_hda_suspend(struct hda_bus *bus, pm_message_t state)
1866 {
1867         struct list_head *p;
1868
1869         /* FIXME: should handle power widget capabilities */
1870         list_for_each(p, &bus->codec_list) {
1871                 struct hda_codec *codec = list_entry(p, struct hda_codec, list);
1872                 if (codec->patch_ops.suspend)
1873                         codec->patch_ops.suspend(codec, state);
1874         }
1875         return 0;
1876 }
1877
1878 /**
1879  * snd_hda_resume - resume the codecs
1880  * @bus: the HDA bus
1881  * @state: resume state
1882  *
1883  * Returns 0 if successful.
1884  */
1885 int snd_hda_resume(struct hda_bus *bus)
1886 {
1887         struct list_head *p;
1888
1889         list_for_each(p, &bus->codec_list) {
1890                 struct hda_codec *codec = list_entry(p, struct hda_codec, list);
1891                 if (codec->patch_ops.resume)
1892                         codec->patch_ops.resume(codec);
1893         }
1894         return 0;
1895 }
1896
1897 /**
1898  * snd_hda_resume_ctls - resume controls in the new control list
1899  * @codec: the HDA codec
1900  * @knew: the array of snd_kcontrol_new_t
1901  *
1902  * This function resumes the mixer controls in the snd_kcontrol_new_t array,
1903  * originally for snd_hda_add_new_ctls().
1904  * The array must be terminated with an empty entry as terminator.
1905  */
1906 int snd_hda_resume_ctls(struct hda_codec *codec, snd_kcontrol_new_t *knew)
1907 {
1908         snd_ctl_elem_value_t *val;
1909
1910         val = kmalloc(sizeof(*val), GFP_KERNEL);
1911         if (! val)
1912                 return -ENOMEM;
1913         codec->in_resume = 1;
1914         for (; knew->name; knew++) {
1915                 int i, count;
1916                 count = knew->count ? knew->count : 1;
1917                 for (i = 0; i < count; i++) {
1918                         memset(val, 0, sizeof(*val));
1919                         val->id.iface = knew->iface;
1920                         val->id.device = knew->device;
1921                         val->id.subdevice = knew->subdevice;
1922                         strcpy(val->id.name, knew->name);
1923                         val->id.index = knew->index ? knew->index : i;
1924                         /* Assume that get callback reads only from cache,
1925                          * not accessing to the real hardware
1926                          */
1927                         if (snd_ctl_elem_read(codec->bus->card, val) < 0)
1928                                 continue;
1929                         snd_ctl_elem_write(codec->bus->card, NULL, val);
1930                 }
1931         }
1932         codec->in_resume = 0;
1933         kfree(val);
1934         return 0;
1935 }
1936
1937 /**
1938  * snd_hda_resume_spdif_out - resume the digital out
1939  * @codec: the HDA codec
1940  */
1941 int snd_hda_resume_spdif_out(struct hda_codec *codec)
1942 {
1943         return snd_hda_resume_ctls(codec, dig_mixes);
1944 }
1945
1946 /**
1947  * snd_hda_resume_spdif_in - resume the digital in
1948  * @codec: the HDA codec
1949  */
1950 int snd_hda_resume_spdif_in(struct hda_codec *codec)
1951 {
1952         return snd_hda_resume_ctls(codec, dig_in_ctls);
1953 }
1954 #endif
1955
1956 /*
1957  * symbols exported for controller modules
1958  */
1959 EXPORT_SYMBOL(snd_hda_codec_read);
1960 EXPORT_SYMBOL(snd_hda_codec_write);
1961 EXPORT_SYMBOL(snd_hda_sequence_write);
1962 EXPORT_SYMBOL(snd_hda_get_sub_nodes);
1963 EXPORT_SYMBOL(snd_hda_queue_unsol_event);
1964 EXPORT_SYMBOL(snd_hda_bus_new);
1965 EXPORT_SYMBOL(snd_hda_codec_new);
1966 EXPORT_SYMBOL(snd_hda_codec_setup_stream);
1967 EXPORT_SYMBOL(snd_hda_calc_stream_format);
1968 EXPORT_SYMBOL(snd_hda_build_pcms);
1969 EXPORT_SYMBOL(snd_hda_build_controls);
1970 #ifdef CONFIG_PM
1971 EXPORT_SYMBOL(snd_hda_suspend);
1972 EXPORT_SYMBOL(snd_hda_resume);
1973 #endif
1974
1975 /*
1976  *  INIT part
1977  */
1978
1979 static int __init alsa_hda_init(void)
1980 {
1981         return 0;
1982 }
1983
1984 static void __exit alsa_hda_exit(void)
1985 {
1986 }
1987
1988 module_init(alsa_hda_init)
1989 module_exit(alsa_hda_exit)