~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/sound/pci/hda/hda_codec.c

Version: ~ [ linux-4.15-rc3 ] ~ [ linux-4.14.5 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.68 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.105 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.47 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.87 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.51 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.96 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.27.62 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 <linux/init.h>
 23 #include <linux/delay.h>
 24 #include <linux/slab.h>
 25 #include <linux/mutex.h>
 26 #include <linux/module.h>
 27 #include <linux/pm.h>
 28 #include <linux/pm_runtime.h>
 29 #include <sound/core.h>
 30 #include "hda_codec.h"
 31 #include <sound/asoundef.h>
 32 #include <sound/tlv.h>
 33 #include <sound/initval.h>
 34 #include <sound/jack.h>
 35 #include "hda_local.h"
 36 #include "hda_beep.h"
 37 #include "hda_jack.h"
 38 #include <sound/hda_hwdep.h>
 39 
 40 #ifdef CONFIG_PM
 41 #define codec_in_pm(codec)      atomic_read(&(codec)->core.in_pm)
 42 #define hda_codec_is_power_on(codec) \
 43         (!pm_runtime_suspended(hda_codec_dev(codec)))
 44 #else
 45 #define codec_in_pm(codec)      0
 46 #define hda_codec_is_power_on(codec)    1
 47 #endif
 48 
 49 #define codec_has_epss(codec) \
 50         ((codec)->core.power_caps & AC_PWRST_EPSS)
 51 #define codec_has_clkstop(codec) \
 52         ((codec)->core.power_caps & AC_PWRST_CLKSTOP)
 53 
 54 /*
 55  * Send and receive a verb - passed to exec_verb override for hdac_device
 56  */
 57 static int codec_exec_verb(struct hdac_device *dev, unsigned int cmd,
 58                            unsigned int flags, unsigned int *res)
 59 {
 60         struct hda_codec *codec = container_of(dev, struct hda_codec, core);
 61         struct hda_bus *bus = codec->bus;
 62         int err;
 63 
 64         if (cmd == ~0)
 65                 return -1;
 66 
 67  again:
 68         snd_hda_power_up_pm(codec);
 69         mutex_lock(&bus->core.cmd_mutex);
 70         if (flags & HDA_RW_NO_RESPONSE_FALLBACK)
 71                 bus->no_response_fallback = 1;
 72         err = snd_hdac_bus_exec_verb_unlocked(&bus->core, codec->core.addr,
 73                                               cmd, res);
 74         bus->no_response_fallback = 0;
 75         mutex_unlock(&bus->core.cmd_mutex);
 76         snd_hda_power_down_pm(codec);
 77         if (!codec_in_pm(codec) && res && err == -EAGAIN) {
 78                 if (bus->response_reset) {
 79                         codec_dbg(codec,
 80                                   "resetting BUS due to fatal communication error\n");
 81                         snd_hda_bus_reset(bus);
 82                 }
 83                 goto again;
 84         }
 85         /* clear reset-flag when the communication gets recovered */
 86         if (!err || codec_in_pm(codec))
 87                 bus->response_reset = 0;
 88         return err;
 89 }
 90 
 91 /**
 92  * snd_hda_sequence_write - sequence writes
 93  * @codec: the HDA codec
 94  * @seq: VERB array to send
 95  *
 96  * Send the commands sequentially from the given array.
 97  * The array must be terminated with NID=0.
 98  */
 99 void snd_hda_sequence_write(struct hda_codec *codec, const struct hda_verb *seq)
100 {
101         for (; seq->nid; seq++)
102                 snd_hda_codec_write(codec, seq->nid, 0, seq->verb, seq->param);
103 }
104 EXPORT_SYMBOL_GPL(snd_hda_sequence_write);
105 
106 /* connection list element */
107 struct hda_conn_list {
108         struct list_head list;
109         int len;
110         hda_nid_t nid;
111         hda_nid_t conns[0];
112 };
113 
114 /* look up the cached results */
115 static struct hda_conn_list *
116 lookup_conn_list(struct hda_codec *codec, hda_nid_t nid)
117 {
118         struct hda_conn_list *p;
119         list_for_each_entry(p, &codec->conn_list, list) {
120                 if (p->nid == nid)
121                         return p;
122         }
123         return NULL;
124 }
125 
126 static int add_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
127                          const hda_nid_t *list)
128 {
129         struct hda_conn_list *p;
130 
131         p = kmalloc(sizeof(*p) + len * sizeof(hda_nid_t), GFP_KERNEL);
132         if (!p)
133                 return -ENOMEM;
134         p->len = len;
135         p->nid = nid;
136         memcpy(p->conns, list, len * sizeof(hda_nid_t));
137         list_add(&p->list, &codec->conn_list);
138         return 0;
139 }
140 
141 static void remove_conn_list(struct hda_codec *codec)
142 {
143         while (!list_empty(&codec->conn_list)) {
144                 struct hda_conn_list *p;
145                 p = list_first_entry(&codec->conn_list, typeof(*p), list);
146                 list_del(&p->list);
147                 kfree(p);
148         }
149 }
150 
151 /* read the connection and add to the cache */
152 static int read_and_add_raw_conns(struct hda_codec *codec, hda_nid_t nid)
153 {
154         hda_nid_t list[32];
155         hda_nid_t *result = list;
156         int len;
157 
158         len = snd_hda_get_raw_connections(codec, nid, list, ARRAY_SIZE(list));
159         if (len == -ENOSPC) {
160                 len = snd_hda_get_num_raw_conns(codec, nid);
161                 result = kmalloc(sizeof(hda_nid_t) * len, GFP_KERNEL);
162                 if (!result)
163                         return -ENOMEM;
164                 len = snd_hda_get_raw_connections(codec, nid, result, len);
165         }
166         if (len >= 0)
167                 len = snd_hda_override_conn_list(codec, nid, len, result);
168         if (result != list)
169                 kfree(result);
170         return len;
171 }
172 
173 /**
174  * snd_hda_get_conn_list - get connection list
175  * @codec: the HDA codec
176  * @nid: NID to parse
177  * @listp: the pointer to store NID list
178  *
179  * Parses the connection list of the given widget and stores the pointer
180  * to the list of NIDs.
181  *
182  * Returns the number of connections, or a negative error code.
183  *
184  * Note that the returned pointer isn't protected against the list
185  * modification.  If snd_hda_override_conn_list() might be called
186  * concurrently, protect with a mutex appropriately.
187  */
188 int snd_hda_get_conn_list(struct hda_codec *codec, hda_nid_t nid,
189                           const hda_nid_t **listp)
190 {
191         bool added = false;
192 
193         for (;;) {
194                 int err;
195                 const struct hda_conn_list *p;
196 
197                 /* if the connection-list is already cached, read it */
198                 p = lookup_conn_list(codec, nid);
199                 if (p) {
200                         if (listp)
201                                 *listp = p->conns;
202                         return p->len;
203                 }
204                 if (snd_BUG_ON(added))
205                         return -EINVAL;
206 
207                 err = read_and_add_raw_conns(codec, nid);
208                 if (err < 0)
209                         return err;
210                 added = true;
211         }
212 }
213 EXPORT_SYMBOL_GPL(snd_hda_get_conn_list);
214 
215 /**
216  * snd_hda_get_connections - copy connection list
217  * @codec: the HDA codec
218  * @nid: NID to parse
219  * @conn_list: connection list array; when NULL, checks only the size
220  * @max_conns: max. number of connections to store
221  *
222  * Parses the connection list of the given widget and stores the list
223  * of NIDs.
224  *
225  * Returns the number of connections, or a negative error code.
226  */
227 int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
228                             hda_nid_t *conn_list, int max_conns)
229 {
230         const hda_nid_t *list;
231         int len = snd_hda_get_conn_list(codec, nid, &list);
232 
233         if (len > 0 && conn_list) {
234                 if (len > max_conns) {
235                         codec_err(codec, "Too many connections %d for NID 0x%x\n",
236                                    len, nid);
237                         return -EINVAL;
238                 }
239                 memcpy(conn_list, list, len * sizeof(hda_nid_t));
240         }
241 
242         return len;
243 }
244 EXPORT_SYMBOL_GPL(snd_hda_get_connections);
245 
246 /**
247  * snd_hda_override_conn_list - add/modify the connection-list to cache
248  * @codec: the HDA codec
249  * @nid: NID to parse
250  * @len: number of connection list entries
251  * @list: the list of connection entries
252  *
253  * Add or modify the given connection-list to the cache.  If the corresponding
254  * cache already exists, invalidate it and append a new one.
255  *
256  * Returns zero or a negative error code.
257  */
258 int snd_hda_override_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
259                                const hda_nid_t *list)
260 {
261         struct hda_conn_list *p;
262 
263         p = lookup_conn_list(codec, nid);
264         if (p) {
265                 list_del(&p->list);
266                 kfree(p);
267         }
268 
269         return add_conn_list(codec, nid, len, list);
270 }
271 EXPORT_SYMBOL_GPL(snd_hda_override_conn_list);
272 
273 /**
274  * snd_hda_get_conn_index - get the connection index of the given NID
275  * @codec: the HDA codec
276  * @mux: NID containing the list
277  * @nid: NID to select
278  * @recursive: 1 when searching NID recursively, otherwise 0
279  *
280  * Parses the connection list of the widget @mux and checks whether the
281  * widget @nid is present.  If it is, return the connection index.
282  * Otherwise it returns -1.
283  */
284 int snd_hda_get_conn_index(struct hda_codec *codec, hda_nid_t mux,
285                            hda_nid_t nid, int recursive)
286 {
287         const hda_nid_t *conn;
288         int i, nums;
289 
290         nums = snd_hda_get_conn_list(codec, mux, &conn);
291         for (i = 0; i < nums; i++)
292                 if (conn[i] == nid)
293                         return i;
294         if (!recursive)
295                 return -1;
296         if (recursive > 10) {
297                 codec_dbg(codec, "too deep connection for 0x%x\n", nid);
298                 return -1;
299         }
300         recursive++;
301         for (i = 0; i < nums; i++) {
302                 unsigned int type = get_wcaps_type(get_wcaps(codec, conn[i]));
303                 if (type == AC_WID_PIN || type == AC_WID_AUD_OUT)
304                         continue;
305                 if (snd_hda_get_conn_index(codec, conn[i], nid, recursive) >= 0)
306                         return i;
307         }
308         return -1;
309 }
310 EXPORT_SYMBOL_GPL(snd_hda_get_conn_index);
311 
312 /**
313  * snd_hda_get_num_devices - get DEVLIST_LEN parameter of the given widget
314  *  @codec: the HDA codec
315  *  @nid: NID of the pin to parse
316  *
317  * Get the device entry number on the given widget. This is a feature of
318  * DP MST audio. Each pin can have several device entries in it.
319  */
320 unsigned int snd_hda_get_num_devices(struct hda_codec *codec, hda_nid_t nid)
321 {
322         unsigned int wcaps = get_wcaps(codec, nid);
323         unsigned int parm;
324 
325         if (!codec->dp_mst || !(wcaps & AC_WCAP_DIGITAL) ||
326             get_wcaps_type(wcaps) != AC_WID_PIN)
327                 return 0;
328 
329         parm = snd_hdac_read_parm_uncached(&codec->core, nid, AC_PAR_DEVLIST_LEN);
330         if (parm == -1)
331                 parm = 0;
332         return parm & AC_DEV_LIST_LEN_MASK;
333 }
334 EXPORT_SYMBOL_GPL(snd_hda_get_num_devices);
335 
336 /**
337  * snd_hda_get_devices - copy device list without cache
338  * @codec: the HDA codec
339  * @nid: NID of the pin to parse
340  * @dev_list: device list array
341  * @max_devices: max. number of devices to store
342  *
343  * Copy the device list. This info is dynamic and so not cached.
344  * Currently called only from hda_proc.c, so not exported.
345  */
346 int snd_hda_get_devices(struct hda_codec *codec, hda_nid_t nid,
347                         u8 *dev_list, int max_devices)
348 {
349         unsigned int parm;
350         int i, dev_len, devices;
351 
352         parm = snd_hda_get_num_devices(codec, nid);
353         if (!parm)      /* not multi-stream capable */
354                 return 0;
355 
356         dev_len = parm + 1;
357         dev_len = dev_len < max_devices ? dev_len : max_devices;
358 
359         devices = 0;
360         while (devices < dev_len) {
361                 if (snd_hdac_read(&codec->core, nid,
362                                   AC_VERB_GET_DEVICE_LIST, devices, &parm))
363                         break; /* error */
364 
365                 for (i = 0; i < 8; i++) {
366                         dev_list[devices] = (u8)parm;
367                         parm >>= 4;
368                         devices++;
369                         if (devices >= dev_len)
370                                 break;
371                 }
372         }
373         return devices;
374 }
375 
376 /**
377  * snd_hda_get_dev_select - get device entry select on the pin
378  * @codec: the HDA codec
379  * @nid: NID of the pin to get device entry select
380  *
381  * Get the devcie entry select on the pin. Return the device entry
382  * id selected on the pin. Return 0 means the first device entry
383  * is selected or MST is not supported.
384  */
385 int snd_hda_get_dev_select(struct hda_codec *codec, hda_nid_t nid)
386 {
387         /* not support dp_mst will always return 0, using first dev_entry */
388         if (!codec->dp_mst)
389                 return 0;
390 
391         return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DEVICE_SEL, 0);
392 }
393 EXPORT_SYMBOL_GPL(snd_hda_get_dev_select);
394 
395 /**
396  * snd_hda_set_dev_select - set device entry select on the pin
397  * @codec: the HDA codec
398  * @nid: NID of the pin to set device entry select
399  * @dev_id: device entry id to be set
400  *
401  * Set the device entry select on the pin nid.
402  */
403 int snd_hda_set_dev_select(struct hda_codec *codec, hda_nid_t nid, int dev_id)
404 {
405         int ret, num_devices;
406 
407         /* not support dp_mst will always return 0, using first dev_entry */
408         if (!codec->dp_mst)
409                 return 0;
410 
411         /* AC_PAR_DEVLIST_LEN is 0 based. */
412         num_devices = snd_hda_get_num_devices(codec, nid) + 1;
413         /* If Device List Length is 0 (num_device = 1),
414          * the pin is not multi stream capable.
415          * Do nothing in this case.
416          */
417         if (num_devices == 1)
418                 return 0;
419 
420         /* Behavior of setting index being equal to or greater than
421          * Device List Length is not predictable
422          */
423         if (num_devices <= dev_id)
424                 return -EINVAL;
425 
426         ret = snd_hda_codec_write(codec, nid, 0,
427                         AC_VERB_SET_DEVICE_SEL, dev_id);
428 
429         return ret;
430 }
431 EXPORT_SYMBOL_GPL(snd_hda_set_dev_select);
432 
433 /*
434  * read widget caps for each widget and store in cache
435  */
436 static int read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node)
437 {
438         int i;
439         hda_nid_t nid;
440 
441         codec->wcaps = kmalloc(codec->core.num_nodes * 4, GFP_KERNEL);
442         if (!codec->wcaps)
443                 return -ENOMEM;
444         nid = codec->core.start_nid;
445         for (i = 0; i < codec->core.num_nodes; i++, nid++)
446                 codec->wcaps[i] = snd_hdac_read_parm_uncached(&codec->core,
447                                         nid, AC_PAR_AUDIO_WIDGET_CAP);
448         return 0;
449 }
450 
451 /* read all pin default configurations and save codec->init_pins */
452 static int read_pin_defaults(struct hda_codec *codec)
453 {
454         hda_nid_t nid;
455 
456         for_each_hda_codec_node(nid, codec) {
457                 struct hda_pincfg *pin;
458                 unsigned int wcaps = get_wcaps(codec, nid);
459                 unsigned int wid_type = get_wcaps_type(wcaps);
460                 if (wid_type != AC_WID_PIN)
461                         continue;
462                 pin = snd_array_new(&codec->init_pins);
463                 if (!pin)
464                         return -ENOMEM;
465                 pin->nid = nid;
466                 pin->cfg = snd_hda_codec_read(codec, nid, 0,
467                                               AC_VERB_GET_CONFIG_DEFAULT, 0);
468                 /*
469                  * all device entries are the same widget control so far
470                  * fixme: if any codec is different, need fix here
471                  */
472                 pin->ctrl = snd_hda_codec_read(codec, nid, 0,
473                                                AC_VERB_GET_PIN_WIDGET_CONTROL,
474                                                0);
475         }
476         return 0;
477 }
478 
479 /* look up the given pin config list and return the item matching with NID */
480 static struct hda_pincfg *look_up_pincfg(struct hda_codec *codec,
481                                          struct snd_array *array,
482                                          hda_nid_t nid)
483 {
484         int i;
485         for (i = 0; i < array->used; i++) {
486                 struct hda_pincfg *pin = snd_array_elem(array, i);
487                 if (pin->nid == nid)
488                         return pin;
489         }
490         return NULL;
491 }
492 
493 /* set the current pin config value for the given NID.
494  * the value is cached, and read via snd_hda_codec_get_pincfg()
495  */
496 int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
497                        hda_nid_t nid, unsigned int cfg)
498 {
499         struct hda_pincfg *pin;
500 
501         /* the check below may be invalid when pins are added by a fixup
502          * dynamically (e.g. via snd_hda_codec_update_widgets()), so disabled
503          * for now
504          */
505         /*
506         if (get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_PIN)
507                 return -EINVAL;
508         */
509 
510         pin = look_up_pincfg(codec, list, nid);
511         if (!pin) {
512                 pin = snd_array_new(list);
513                 if (!pin)
514                         return -ENOMEM;
515                 pin->nid = nid;
516         }
517         pin->cfg = cfg;
518         return 0;
519 }
520 
521 /**
522  * snd_hda_codec_set_pincfg - Override a pin default configuration
523  * @codec: the HDA codec
524  * @nid: NID to set the pin config
525  * @cfg: the pin default config value
526  *
527  * Override a pin default configuration value in the cache.
528  * This value can be read by snd_hda_codec_get_pincfg() in a higher
529  * priority than the real hardware value.
530  */
531 int snd_hda_codec_set_pincfg(struct hda_codec *codec,
532                              hda_nid_t nid, unsigned int cfg)
533 {
534         return snd_hda_add_pincfg(codec, &codec->driver_pins, nid, cfg);
535 }
536 EXPORT_SYMBOL_GPL(snd_hda_codec_set_pincfg);
537 
538 /**
539  * snd_hda_codec_get_pincfg - Obtain a pin-default configuration
540  * @codec: the HDA codec
541  * @nid: NID to get the pin config
542  *
543  * Get the current pin config value of the given pin NID.
544  * If the pincfg value is cached or overridden via sysfs or driver,
545  * returns the cached value.
546  */
547 unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid)
548 {
549         struct hda_pincfg *pin;
550 
551 #ifdef CONFIG_SND_HDA_RECONFIG
552         {
553                 unsigned int cfg = 0;
554                 mutex_lock(&codec->user_mutex);
555                 pin = look_up_pincfg(codec, &codec->user_pins, nid);
556                 if (pin)
557                         cfg = pin->cfg;
558                 mutex_unlock(&codec->user_mutex);
559                 if (cfg)
560                         return cfg;
561         }
562 #endif
563         pin = look_up_pincfg(codec, &codec->driver_pins, nid);
564         if (pin)
565                 return pin->cfg;
566         pin = look_up_pincfg(codec, &codec->init_pins, nid);
567         if (pin)
568                 return pin->cfg;
569         return 0;
570 }
571 EXPORT_SYMBOL_GPL(snd_hda_codec_get_pincfg);
572 
573 /**
574  * snd_hda_codec_set_pin_target - remember the current pinctl target value
575  * @codec: the HDA codec
576  * @nid: pin NID
577  * @val: assigned pinctl value
578  *
579  * This function stores the given value to a pinctl target value in the
580  * pincfg table.  This isn't always as same as the actually written value
581  * but can be referred at any time via snd_hda_codec_get_pin_target().
582  */
583 int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid,
584                                  unsigned int val)
585 {
586         struct hda_pincfg *pin;
587 
588         pin = look_up_pincfg(codec, &codec->init_pins, nid);
589         if (!pin)
590                 return -EINVAL;
591         pin->target = val;
592         return 0;
593 }
594 EXPORT_SYMBOL_GPL(snd_hda_codec_set_pin_target);
595 
596 /**
597  * snd_hda_codec_get_pin_target - return the current pinctl target value
598  * @codec: the HDA codec
599  * @nid: pin NID
600  */
601 int snd_hda_codec_get_pin_target(struct hda_codec *codec, hda_nid_t nid)
602 {
603         struct hda_pincfg *pin;
604 
605         pin = look_up_pincfg(codec, &codec->init_pins, nid);
606         if (!pin)
607                 return 0;
608         return pin->target;
609 }
610 EXPORT_SYMBOL_GPL(snd_hda_codec_get_pin_target);
611 
612 /**
613  * snd_hda_shutup_pins - Shut up all pins
614  * @codec: the HDA codec
615  *
616  * Clear all pin controls to shup up before suspend for avoiding click noise.
617  * The controls aren't cached so that they can be resumed properly.
618  */
619 void snd_hda_shutup_pins(struct hda_codec *codec)
620 {
621         int i;
622         /* don't shut up pins when unloading the driver; otherwise it breaks
623          * the default pin setup at the next load of the driver
624          */
625         if (codec->bus->shutdown)
626                 return;
627         for (i = 0; i < codec->init_pins.used; i++) {
628                 struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i);
629                 /* use read here for syncing after issuing each verb */
630                 snd_hda_codec_read(codec, pin->nid, 0,
631                                    AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
632         }
633         codec->pins_shutup = 1;
634 }
635 EXPORT_SYMBOL_GPL(snd_hda_shutup_pins);
636 
637 #ifdef CONFIG_PM
638 /* Restore the pin controls cleared previously via snd_hda_shutup_pins() */
639 static void restore_shutup_pins(struct hda_codec *codec)
640 {
641         int i;
642         if (!codec->pins_shutup)
643                 return;
644         if (codec->bus->shutdown)
645                 return;
646         for (i = 0; i < codec->init_pins.used; i++) {
647                 struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i);
648                 snd_hda_codec_write(codec, pin->nid, 0,
649                                     AC_VERB_SET_PIN_WIDGET_CONTROL,
650                                     pin->ctrl);
651         }
652         codec->pins_shutup = 0;
653 }
654 #endif
655 
656 static void hda_jackpoll_work(struct work_struct *work)
657 {
658         struct hda_codec *codec =
659                 container_of(work, struct hda_codec, jackpoll_work.work);
660 
661         snd_hda_jack_set_dirty_all(codec);
662         snd_hda_jack_poll_all(codec);
663 
664         if (!codec->jackpoll_interval)
665                 return;
666 
667         schedule_delayed_work(&codec->jackpoll_work,
668                               codec->jackpoll_interval);
669 }
670 
671 /* release all pincfg lists */
672 static void free_init_pincfgs(struct hda_codec *codec)
673 {
674         snd_array_free(&codec->driver_pins);
675 #ifdef CONFIG_SND_HDA_RECONFIG
676         snd_array_free(&codec->user_pins);
677 #endif
678         snd_array_free(&codec->init_pins);
679 }
680 
681 /*
682  * audio-converter setup caches
683  */
684 struct hda_cvt_setup {
685         hda_nid_t nid;
686         u8 stream_tag;
687         u8 channel_id;
688         u16 format_id;
689         unsigned char active;   /* cvt is currently used */
690         unsigned char dirty;    /* setups should be cleared */
691 };
692 
693 /* get or create a cache entry for the given audio converter NID */
694 static struct hda_cvt_setup *
695 get_hda_cvt_setup(struct hda_codec *codec, hda_nid_t nid)
696 {
697         struct hda_cvt_setup *p;
698         int i;
699 
700         for (i = 0; i < codec->cvt_setups.used; i++) {
701                 p = snd_array_elem(&codec->cvt_setups, i);
702                 if (p->nid == nid)
703                         return p;
704         }
705         p = snd_array_new(&codec->cvt_setups);
706         if (p)
707                 p->nid = nid;
708         return p;
709 }
710 
711 /*
712  * PCM device
713  */
714 static void release_pcm(struct kref *kref)
715 {
716         struct hda_pcm *pcm = container_of(kref, struct hda_pcm, kref);
717 
718         if (pcm->pcm)
719                 snd_device_free(pcm->codec->card, pcm->pcm);
720         clear_bit(pcm->device, pcm->codec->bus->pcm_dev_bits);
721         kfree(pcm->name);
722         kfree(pcm);
723 }
724 
725 void snd_hda_codec_pcm_put(struct hda_pcm *pcm)
726 {
727         kref_put(&pcm->kref, release_pcm);
728 }
729 EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_put);
730 
731 struct hda_pcm *snd_hda_codec_pcm_new(struct hda_codec *codec,
732                                       const char *fmt, ...)
733 {
734         struct hda_pcm *pcm;
735         va_list args;
736 
737         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
738         if (!pcm)
739                 return NULL;
740 
741         pcm->codec = codec;
742         kref_init(&pcm->kref);
743         va_start(args, fmt);
744         pcm->name = kvasprintf(GFP_KERNEL, fmt, args);
745         va_end(args);
746         if (!pcm->name) {
747                 kfree(pcm);
748                 return NULL;
749         }
750 
751         list_add_tail(&pcm->list, &codec->pcm_list_head);
752         return pcm;
753 }
754 EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_new);
755 
756 /*
757  * codec destructor
758  */
759 static void codec_release_pcms(struct hda_codec *codec)
760 {
761         struct hda_pcm *pcm, *n;
762 
763         list_for_each_entry_safe(pcm, n, &codec->pcm_list_head, list) {
764                 list_del_init(&pcm->list);
765                 if (pcm->pcm)
766                         snd_device_disconnect(codec->card, pcm->pcm);
767                 snd_hda_codec_pcm_put(pcm);
768         }
769 }
770 
771 void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec)
772 {
773         if (codec->registered) {
774                 /* pm_runtime_put() is called in snd_hdac_device_exit() */
775                 pm_runtime_get_noresume(hda_codec_dev(codec));
776                 pm_runtime_disable(hda_codec_dev(codec));
777                 codec->registered = 0;
778         }
779 
780         cancel_delayed_work_sync(&codec->jackpoll_work);
781         if (!codec->in_freeing)
782                 snd_hda_ctls_clear(codec);
783         codec_release_pcms(codec);
784         snd_hda_detach_beep_device(codec);
785         memset(&codec->patch_ops, 0, sizeof(codec->patch_ops));
786         snd_hda_jack_tbl_clear(codec);
787         codec->proc_widget_hook = NULL;
788         codec->spec = NULL;
789 
790         /* free only driver_pins so that init_pins + user_pins are restored */
791         snd_array_free(&codec->driver_pins);
792         snd_array_free(&codec->cvt_setups);
793         snd_array_free(&codec->spdif_out);
794         snd_array_free(&codec->verbs);
795         codec->preset = NULL;
796         codec->slave_dig_outs = NULL;
797         codec->spdif_status_reset = 0;
798         snd_array_free(&codec->mixers);
799         snd_array_free(&codec->nids);
800         remove_conn_list(codec);
801         snd_hdac_regmap_exit(&codec->core);
802 }
803 
804 static unsigned int hda_set_power_state(struct hda_codec *codec,
805                                 unsigned int power_state);
806 
807 /* also called from hda_bind.c */
808 void snd_hda_codec_register(struct hda_codec *codec)
809 {
810         if (codec->registered)
811                 return;
812         if (device_is_registered(hda_codec_dev(codec))) {
813                 snd_hda_register_beep_device(codec);
814                 snd_hdac_link_power(&codec->core, true);
815                 pm_runtime_enable(hda_codec_dev(codec));
816                 /* it was powered up in snd_hda_codec_new(), now all done */
817                 snd_hda_power_down(codec);
818                 codec->registered = 1;
819         }
820 }
821 
822 static int snd_hda_codec_dev_register(struct snd_device *device)
823 {
824         snd_hda_codec_register(device->device_data);
825         return 0;
826 }
827 
828 static int snd_hda_codec_dev_disconnect(struct snd_device *device)
829 {
830         struct hda_codec *codec = device->device_data;
831 
832         snd_hda_detach_beep_device(codec);
833         return 0;
834 }
835 
836 static int snd_hda_codec_dev_free(struct snd_device *device)
837 {
838         struct hda_codec *codec = device->device_data;
839 
840         codec->in_freeing = 1;
841         snd_hdac_device_unregister(&codec->core);
842         snd_hdac_link_power(&codec->core, false);
843         put_device(hda_codec_dev(codec));
844         return 0;
845 }
846 
847 static void snd_hda_codec_dev_release(struct device *dev)
848 {
849         struct hda_codec *codec = dev_to_hda_codec(dev);
850 
851         free_init_pincfgs(codec);
852         snd_hdac_device_exit(&codec->core);
853         snd_hda_sysfs_clear(codec);
854         kfree(codec->modelname);
855         kfree(codec->wcaps);
856         kfree(codec);
857 }
858 
859 /**
860  * snd_hda_codec_new - create a HDA codec
861  * @bus: the bus to assign
862  * @codec_addr: the codec address
863  * @codecp: the pointer to store the generated codec
864  *
865  * Returns 0 if successful, or a negative error code.
866  */
867 int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card,
868                       unsigned int codec_addr, struct hda_codec **codecp)
869 {
870         struct hda_codec *codec;
871         char component[31];
872         hda_nid_t fg;
873         int err;
874         static struct snd_device_ops dev_ops = {
875                 .dev_register = snd_hda_codec_dev_register,
876                 .dev_disconnect = snd_hda_codec_dev_disconnect,
877                 .dev_free = snd_hda_codec_dev_free,
878         };
879 
880         if (snd_BUG_ON(!bus))
881                 return -EINVAL;
882         if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
883                 return -EINVAL;
884 
885         codec = kzalloc(sizeof(*codec), GFP_KERNEL);
886         if (!codec)
887                 return -ENOMEM;
888 
889         sprintf(component, "hdaudioC%dD%d", card->number, codec_addr);
890         err = snd_hdac_device_init(&codec->core, &bus->core, component,
891                                    codec_addr);
892         if (err < 0) {
893                 kfree(codec);
894                 return err;
895         }
896 
897         codec->core.dev.release = snd_hda_codec_dev_release;
898         codec->core.type = HDA_DEV_LEGACY;
899         codec->core.exec_verb = codec_exec_verb;
900 
901         codec->bus = bus;
902         codec->card = card;
903         codec->addr = codec_addr;
904         mutex_init(&codec->spdif_mutex);
905         mutex_init(&codec->control_mutex);
906         snd_array_init(&codec->mixers, sizeof(struct hda_nid_item), 32);
907         snd_array_init(&codec->nids, sizeof(struct hda_nid_item), 32);
908         snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16);
909         snd_array_init(&codec->driver_pins, sizeof(struct hda_pincfg), 16);
910         snd_array_init(&codec->cvt_setups, sizeof(struct hda_cvt_setup), 8);
911         snd_array_init(&codec->spdif_out, sizeof(struct hda_spdif_out), 16);
912         snd_array_init(&codec->jacktbl, sizeof(struct hda_jack_tbl), 16);
913         snd_array_init(&codec->verbs, sizeof(struct hda_verb *), 8);
914         INIT_LIST_HEAD(&codec->conn_list);
915         INIT_LIST_HEAD(&codec->pcm_list_head);
916 
917         INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work);
918         codec->depop_delay = -1;
919         codec->fixup_id = HDA_FIXUP_ID_NOT_SET;
920 
921 #ifdef CONFIG_PM
922         codec->power_jiffies = jiffies;
923 #endif
924 
925         snd_hda_sysfs_init(codec);
926 
927         if (codec->bus->modelname) {
928                 codec->modelname = kstrdup(codec->bus->modelname, GFP_KERNEL);
929                 if (!codec->modelname) {
930                         err = -ENOMEM;
931                         goto error;
932                 }
933         }
934 
935         fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
936         err = read_widget_caps(codec, fg);
937         if (err < 0)
938                 goto error;
939         err = read_pin_defaults(codec);
940         if (err < 0)
941                 goto error;
942 
943         /* power-up all before initialization */
944         hda_set_power_state(codec, AC_PWRST_D0);
945 
946         snd_hda_codec_proc_new(codec);
947 
948         snd_hda_create_hwdep(codec);
949 
950         sprintf(component, "HDA:%08x,%08x,%08x", codec->core.vendor_id,
951                 codec->core.subsystem_id, codec->core.revision_id);
952         snd_component_add(card, component);
953 
954         err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops);
955         if (err < 0)
956                 goto error;
957 
958         if (codecp)
959                 *codecp = codec;
960         return 0;
961 
962  error:
963         put_device(hda_codec_dev(codec));
964         return err;
965 }
966 EXPORT_SYMBOL_GPL(snd_hda_codec_new);
967 
968 /**
969  * snd_hda_codec_update_widgets - Refresh widget caps and pin defaults
970  * @codec: the HDA codec
971  *
972  * Forcibly refresh the all widget caps and the init pin configurations of
973  * the given codec.
974  */
975 int snd_hda_codec_update_widgets(struct hda_codec *codec)
976 {
977         hda_nid_t fg;
978         int err;
979 
980         err = snd_hdac_refresh_widgets(&codec->core, true);
981         if (err < 0)
982                 return err;
983 
984         /* Assume the function group node does not change,
985          * only the widget nodes may change.
986          */
987         kfree(codec->wcaps);
988         fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
989         err = read_widget_caps(codec, fg);
990         if (err < 0)
991                 return err;
992 
993         snd_array_free(&codec->init_pins);
994         err = read_pin_defaults(codec);
995 
996         return err;
997 }
998 EXPORT_SYMBOL_GPL(snd_hda_codec_update_widgets);
999 
1000 /* update the stream-id if changed */
1001 static void update_pcm_stream_id(struct hda_codec *codec,
1002                                  struct hda_cvt_setup *p, hda_nid_t nid,
1003                                  u32 stream_tag, int channel_id)
1004 {
1005         unsigned int oldval, newval;
1006 
1007         if (p->stream_tag != stream_tag || p->channel_id != channel_id) {
1008                 oldval = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0);
1009                 newval = (stream_tag << 4) | channel_id;
1010                 if (oldval != newval)
1011                         snd_hda_codec_write(codec, nid, 0,
1012                                             AC_VERB_SET_CHANNEL_STREAMID,
1013                                             newval);
1014                 p->stream_tag = stream_tag;
1015                 p->channel_id = channel_id;
1016         }
1017 }
1018 
1019 /* update the format-id if changed */
1020 static void update_pcm_format(struct hda_codec *codec, struct hda_cvt_setup *p,
1021                               hda_nid_t nid, int format)
1022 {
1023         unsigned int oldval;
1024 
1025         if (p->format_id != format) {
1026                 oldval = snd_hda_codec_read(codec, nid, 0,
1027                                             AC_VERB_GET_STREAM_FORMAT, 0);
1028                 if (oldval != format) {
1029                         msleep(1);
1030                         snd_hda_codec_write(codec, nid, 0,
1031                                             AC_VERB_SET_STREAM_FORMAT,
1032                                             format);
1033                 }
1034                 p->format_id = format;
1035         }
1036 }
1037 
1038 /**
1039  * snd_hda_codec_setup_stream - set up the codec for streaming
1040  * @codec: the CODEC to set up
1041  * @nid: the NID to set up
1042  * @stream_tag: stream tag to pass, it's between 0x1 and 0xf.
1043  * @channel_id: channel id to pass, zero based.
1044  * @format: stream format.
1045  */
1046 void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid,
1047                                 u32 stream_tag,
1048                                 int channel_id, int format)
1049 {
1050         struct hda_codec *c;
1051         struct hda_cvt_setup *p;
1052         int type;
1053         int i;
1054 
1055         if (!nid)
1056                 return;
1057 
1058         codec_dbg(codec,
1059                   "hda_codec_setup_stream: NID=0x%x, stream=0x%x, channel=%d, format=0x%x\n",
1060                   nid, stream_tag, channel_id, format);
1061         p = get_hda_cvt_setup(codec, nid);
1062         if (!p)
1063                 return;
1064 
1065         if (codec->patch_ops.stream_pm)
1066                 codec->patch_ops.stream_pm(codec, nid, true);
1067         if (codec->pcm_format_first)
1068                 update_pcm_format(codec, p, nid, format);
1069         update_pcm_stream_id(codec, p, nid, stream_tag, channel_id);
1070         if (!codec->pcm_format_first)
1071                 update_pcm_format(codec, p, nid, format);
1072 
1073         p->active = 1;
1074         p->dirty = 0;
1075 
1076         /* make other inactive cvts with the same stream-tag dirty */
1077         type = get_wcaps_type(get_wcaps(codec, nid));
1078         list_for_each_codec(c, codec->bus) {
1079                 for (i = 0; i < c->cvt_setups.used; i++) {
1080                         p = snd_array_elem(&c->cvt_setups, i);
1081                         if (!p->active && p->stream_tag == stream_tag &&
1082                             get_wcaps_type(get_wcaps(c, p->nid)) == type)
1083                                 p->dirty = 1;
1084                 }
1085         }
1086 }
1087 EXPORT_SYMBOL_GPL(snd_hda_codec_setup_stream);
1088 
1089 static void really_cleanup_stream(struct hda_codec *codec,
1090                                   struct hda_cvt_setup *q);
1091 
1092 /**
1093  * __snd_hda_codec_cleanup_stream - clean up the codec for closing
1094  * @codec: the CODEC to clean up
1095  * @nid: the NID to clean up
1096  * @do_now: really clean up the stream instead of clearing the active flag
1097  */
1098 void __snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid,
1099                                     int do_now)
1100 {
1101         struct hda_cvt_setup *p;
1102 
1103         if (!nid)
1104                 return;
1105 
1106         if (codec->no_sticky_stream)
1107                 do_now = 1;
1108 
1109         codec_dbg(codec, "hda_codec_cleanup_stream: NID=0x%x\n", nid);
1110         p = get_hda_cvt_setup(codec, nid);
1111         if (p) {
1112                 /* here we just clear the active flag when do_now isn't set;
1113                  * actual clean-ups will be done later in
1114                  * purify_inactive_streams() called from snd_hda_codec_prpapre()
1115                  */
1116                 if (do_now)
1117                         really_cleanup_stream(codec, p);
1118                 else
1119                         p->active = 0;
1120         }
1121 }
1122 EXPORT_SYMBOL_GPL(__snd_hda_codec_cleanup_stream);
1123 
1124 static void really_cleanup_stream(struct hda_codec *codec,
1125                                   struct hda_cvt_setup *q)
1126 {
1127         hda_nid_t nid = q->nid;
1128         if (q->stream_tag || q->channel_id)
1129                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID, 0);
1130         if (q->format_id)
1131                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, 0
1132 );
1133         memset(q, 0, sizeof(*q));
1134         q->nid = nid;
1135         if (codec->patch_ops.stream_pm)
1136                 codec->patch_ops.stream_pm(codec, nid, false);
1137 }
1138 
1139 /* clean up the all conflicting obsolete streams */
1140 static void purify_inactive_streams(struct hda_codec *codec)
1141 {
1142         struct hda_codec *c;
1143         int i;
1144 
1145         list_for_each_codec(c, codec->bus) {
1146                 for (i = 0; i < c->cvt_setups.used; i++) {
1147                         struct hda_cvt_setup *p;
1148                         p = snd_array_elem(&c->cvt_setups, i);
1149                         if (p->dirty)
1150                                 really_cleanup_stream(c, p);
1151                 }
1152         }
1153 }
1154 
1155 #ifdef CONFIG_PM
1156 /* clean up all streams; called from suspend */
1157 static void hda_cleanup_all_streams(struct hda_codec *codec)
1158 {
1159         int i;
1160 
1161         for (i = 0; i < codec->cvt_setups.used; i++) {
1162                 struct hda_cvt_setup *p = snd_array_elem(&codec->cvt_setups, i);
1163                 if (p->stream_tag)
1164                         really_cleanup_stream(codec, p);
1165         }
1166 }
1167 #endif
1168 
1169 /*
1170  * amp access functions
1171  */
1172 
1173 /**
1174  * query_amp_caps - query AMP capabilities
1175  * @codec: the HD-auio codec
1176  * @nid: the NID to query
1177  * @direction: either #HDA_INPUT or #HDA_OUTPUT
1178  *
1179  * Query AMP capabilities for the given widget and direction.
1180  * Returns the obtained capability bits.
1181  *
1182  * When cap bits have been already read, this doesn't read again but
1183  * returns the cached value.
1184  */
1185 u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
1186 {
1187         if (!(get_wcaps(codec, nid) & AC_WCAP_AMP_OVRD))
1188                 nid = codec->core.afg;
1189         return snd_hda_param_read(codec, nid,
1190                                   direction == HDA_OUTPUT ?
1191                                   AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
1192 }
1193 EXPORT_SYMBOL_GPL(query_amp_caps);
1194 
1195 /**
1196  * snd_hda_check_amp_caps - query AMP capabilities
1197  * @codec: the HD-audio codec
1198  * @nid: the NID to query
1199  * @dir: either #HDA_INPUT or #HDA_OUTPUT
1200  * @bits: bit mask to check the result
1201  *
1202  * Check whether the widget has the given amp capability for the direction.
1203  */
1204 bool snd_hda_check_amp_caps(struct hda_codec *codec, hda_nid_t nid,
1205                            int dir, unsigned int bits)
1206 {
1207         if (!nid)
1208                 return false;
1209         if (get_wcaps(codec, nid) & (1 << (dir + 1)))
1210                 if (query_amp_caps(codec, nid, dir) & bits)
1211                         return true;
1212         return false;
1213 }
1214 EXPORT_SYMBOL_GPL(snd_hda_check_amp_caps);
1215 
1216 /**
1217  * snd_hda_override_amp_caps - Override the AMP capabilities
1218  * @codec: the CODEC to clean up
1219  * @nid: the NID to clean up
1220  * @dir: either #HDA_INPUT or #HDA_OUTPUT
1221  * @caps: the capability bits to set
1222  *
1223  * Override the cached AMP caps bits value by the given one.
1224  * This function is useful if the driver needs to adjust the AMP ranges,
1225  * e.g. limit to 0dB, etc.
1226  *
1227  * Returns zero if successful or a negative error code.
1228  */
1229 int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
1230                               unsigned int caps)
1231 {
1232         unsigned int parm;
1233 
1234         snd_hda_override_wcaps(codec, nid,
1235                                get_wcaps(codec, nid) | AC_WCAP_AMP_OVRD);
1236         parm = dir == HDA_OUTPUT ? AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP;
1237         return snd_hdac_override_parm(&codec->core, nid, parm, caps);
1238 }
1239 EXPORT_SYMBOL_GPL(snd_hda_override_amp_caps);
1240 
1241 /**
1242  * snd_hda_codec_amp_update - update the AMP mono value
1243  * @codec: HD-audio codec
1244  * @nid: NID to read the AMP value
1245  * @ch: channel to update (0 or 1)
1246  * @dir: #HDA_INPUT or #HDA_OUTPUT
1247  * @idx: the index value (only for input direction)
1248  * @mask: bit mask to set
1249  * @val: the bits value to set
1250  *
1251  * Update the AMP values for the given channel, direction and index.
1252  */
1253 int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid,
1254                              int ch, int dir, int idx, int mask, int val)
1255 {
1256         unsigned int cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
1257 
1258         /* enable fake mute if no h/w mute but min=mute */
1259         if ((query_amp_caps(codec, nid, dir) &
1260              (AC_AMPCAP_MUTE | AC_AMPCAP_MIN_MUTE)) == AC_AMPCAP_MIN_MUTE)
1261                 cmd |= AC_AMP_FAKE_MUTE;
1262         return snd_hdac_regmap_update_raw(&codec->core, cmd, mask, val);
1263 }
1264 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_update);
1265 
1266 /**
1267  * snd_hda_codec_amp_stereo - update the AMP stereo values
1268  * @codec: HD-audio codec
1269  * @nid: NID to read the AMP value
1270  * @direction: #HDA_INPUT or #HDA_OUTPUT
1271  * @idx: the index value (only for input direction)
1272  * @mask: bit mask to set
1273  * @val: the bits value to set
1274  *
1275  * Update the AMP values like snd_hda_codec_amp_update(), but for a
1276  * stereo widget with the same mask and value.
1277  */
1278 int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
1279                              int direction, int idx, int mask, int val)
1280 {
1281         int ch, ret = 0;
1282 
1283         if (snd_BUG_ON(mask & ~0xff))
1284                 mask &= 0xff;
1285         for (ch = 0; ch < 2; ch++)
1286                 ret |= snd_hda_codec_amp_update(codec, nid, ch, direction,
1287                                                 idx, mask, val);
1288         return ret;
1289 }
1290 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_stereo);
1291 
1292 /**
1293  * snd_hda_codec_amp_init - initialize the AMP value
1294  * @codec: the HDA codec
1295  * @nid: NID to read the AMP value
1296  * @ch: channel (left=0 or right=1)
1297  * @dir: #HDA_INPUT or #HDA_OUTPUT
1298  * @idx: the index value (only for input direction)
1299  * @mask: bit mask to set
1300  * @val: the bits value to set
1301  *
1302  * Works like snd_hda_codec_amp_update() but it writes the value only at
1303  * the first access.  If the amp was already initialized / updated beforehand,
1304  * this does nothing.
1305  */
1306 int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch,
1307                            int dir, int idx, int mask, int val)
1308 {
1309         int orig;
1310 
1311         if (!codec->core.regmap)
1312                 return -EINVAL;
1313         regcache_cache_only(codec->core.regmap, true);
1314         orig = snd_hda_codec_amp_read(codec, nid, ch, dir, idx);
1315         regcache_cache_only(codec->core.regmap, false);
1316         if (orig >= 0)
1317                 return 0;
1318         return snd_hda_codec_amp_update(codec, nid, ch, dir, idx, mask, val);
1319 }
1320 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_init);
1321 
1322 /**
1323  * snd_hda_codec_amp_init_stereo - initialize the stereo AMP value
1324  * @codec: the HDA codec
1325  * @nid: NID to read the AMP value
1326  * @dir: #HDA_INPUT or #HDA_OUTPUT
1327  * @idx: the index value (only for input direction)
1328  * @mask: bit mask to set
1329  * @val: the bits value to set
1330  *
1331  * Call snd_hda_codec_amp_init() for both stereo channels.
1332  */
1333 int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid,
1334                                   int dir, int idx, int mask, int val)
1335 {
1336         int ch, ret = 0;
1337 
1338         if (snd_BUG_ON(mask & ~0xff))
1339                 mask &= 0xff;
1340         for (ch = 0; ch < 2; ch++)
1341                 ret |= snd_hda_codec_amp_init(codec, nid, ch, dir,
1342                                               idx, mask, val);
1343         return ret;
1344 }
1345 EXPORT_SYMBOL_GPL(snd_hda_codec_amp_init_stereo);
1346 
1347 static u32 get_amp_max_value(struct hda_codec *codec, hda_nid_t nid, int dir,
1348                              unsigned int ofs)
1349 {
1350         u32 caps = query_amp_caps(codec, nid, dir);
1351         /* get num steps */
1352         caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
1353         if (ofs < caps)
1354                 caps -= ofs;
1355         return caps;
1356 }
1357 
1358 /**
1359  * snd_hda_mixer_amp_volume_info - Info callback for a standard AMP mixer
1360  * @kcontrol: referred ctl element
1361  * @uinfo: pointer to get/store the data
1362  *
1363  * The control element is supposed to have the private_value field
1364  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1365  */
1366 int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol,
1367                                   struct snd_ctl_elem_info *uinfo)
1368 {
1369         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1370         u16 nid = get_amp_nid(kcontrol);
1371         u8 chs = get_amp_channels(kcontrol);
1372         int dir = get_amp_direction(kcontrol);
1373         unsigned int ofs = get_amp_offset(kcontrol);
1374 
1375         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1376         uinfo->count = chs == 3 ? 2 : 1;
1377         uinfo->value.integer.min = 0;
1378         uinfo->value.integer.max = get_amp_max_value(codec, nid, dir, ofs);
1379         if (!uinfo->value.integer.max) {
1380                 codec_warn(codec,
1381                            "num_steps = 0 for NID=0x%x (ctl = %s)\n",
1382                            nid, kcontrol->id.name);
1383                 return -EINVAL;
1384         }
1385         return 0;
1386 }
1387 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_info);
1388 
1389 
1390 static inline unsigned int
1391 read_amp_value(struct hda_codec *codec, hda_nid_t nid,
1392                int ch, int dir, int idx, unsigned int ofs)
1393 {
1394         unsigned int val;
1395         val = snd_hda_codec_amp_read(codec, nid, ch, dir, idx);
1396         val &= HDA_AMP_VOLMASK;
1397         if (val >= ofs)
1398                 val -= ofs;
1399         else
1400                 val = 0;
1401         return val;
1402 }
1403 
1404 static inline int
1405 update_amp_value(struct hda_codec *codec, hda_nid_t nid,
1406                  int ch, int dir, int idx, unsigned int ofs,
1407                  unsigned int val)
1408 {
1409         unsigned int maxval;
1410 
1411         if (val > 0)
1412                 val += ofs;
1413         /* ofs = 0: raw max value */
1414         maxval = get_amp_max_value(codec, nid, dir, 0);
1415         if (val > maxval)
1416                 val = maxval;
1417         return snd_hda_codec_amp_update(codec, nid, ch, dir, idx,
1418                                         HDA_AMP_VOLMASK, val);
1419 }
1420 
1421 /**
1422  * snd_hda_mixer_amp_volume_get - Get callback for a standard AMP mixer volume
1423  * @kcontrol: ctl element
1424  * @ucontrol: pointer to get/store the data
1425  *
1426  * The control element is supposed to have the private_value field
1427  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1428  */
1429 int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol,
1430                                  struct snd_ctl_elem_value *ucontrol)
1431 {
1432         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1433         hda_nid_t nid = get_amp_nid(kcontrol);
1434         int chs = get_amp_channels(kcontrol);
1435         int dir = get_amp_direction(kcontrol);
1436         int idx = get_amp_index(kcontrol);
1437         unsigned int ofs = get_amp_offset(kcontrol);
1438         long *valp = ucontrol->value.integer.value;
1439 
1440         if (chs & 1)
1441                 *valp++ = read_amp_value(codec, nid, 0, dir, idx, ofs);
1442         if (chs & 2)
1443                 *valp = read_amp_value(codec, nid, 1, dir, idx, ofs);
1444         return 0;
1445 }
1446 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_get);
1447 
1448 /**
1449  * snd_hda_mixer_amp_volume_put - Put callback for a standard AMP mixer volume
1450  * @kcontrol: ctl element
1451  * @ucontrol: pointer to get/store the data
1452  *
1453  * The control element is supposed to have the private_value field
1454  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1455  */
1456 int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
1457                                  struct snd_ctl_elem_value *ucontrol)
1458 {
1459         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1460         hda_nid_t nid = get_amp_nid(kcontrol);
1461         int chs = get_amp_channels(kcontrol);
1462         int dir = get_amp_direction(kcontrol);
1463         int idx = get_amp_index(kcontrol);
1464         unsigned int ofs = get_amp_offset(kcontrol);
1465         long *valp = ucontrol->value.integer.value;
1466         int change = 0;
1467 
1468         if (chs & 1) {
1469                 change = update_amp_value(codec, nid, 0, dir, idx, ofs, *valp);
1470                 valp++;
1471         }
1472         if (chs & 2)
1473                 change |= update_amp_value(codec, nid, 1, dir, idx, ofs, *valp);
1474         return change;
1475 }
1476 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_put);
1477 
1478 /* inquiry the amp caps and convert to TLV */
1479 static void get_ctl_amp_tlv(struct snd_kcontrol *kcontrol, unsigned int *tlv)
1480 {
1481         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1482         hda_nid_t nid = get_amp_nid(kcontrol);
1483         int dir = get_amp_direction(kcontrol);
1484         unsigned int ofs = get_amp_offset(kcontrol);
1485         bool min_mute = get_amp_min_mute(kcontrol);
1486         u32 caps, val1, val2;
1487 
1488         caps = query_amp_caps(codec, nid, dir);
1489         val2 = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT;
1490         val2 = (val2 + 1) * 25;
1491         val1 = -((caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT);
1492         val1 += ofs;
1493         val1 = ((int)val1) * ((int)val2);
1494         if (min_mute || (caps & AC_AMPCAP_MIN_MUTE))
1495                 val2 |= TLV_DB_SCALE_MUTE;
1496         tlv[0] = SNDRV_CTL_TLVT_DB_SCALE;
1497         tlv[1] = 2 * sizeof(unsigned int);
1498         tlv[2] = val1;
1499         tlv[3] = val2;
1500 }
1501 
1502 /**
1503  * snd_hda_mixer_amp_tlv - TLV callback for a standard AMP mixer volume
1504  * @kcontrol: ctl element
1505  * @op_flag: operation flag
1506  * @size: byte size of input TLV
1507  * @_tlv: TLV data
1508  *
1509  * The control element is supposed to have the private_value field
1510  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
1511  */
1512 int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
1513                           unsigned int size, unsigned int __user *_tlv)
1514 {
1515         unsigned int tlv[4];
1516 
1517         if (size < 4 * sizeof(unsigned int))
1518                 return -ENOMEM;
1519         get_ctl_amp_tlv(kcontrol, tlv);
1520         if (copy_to_user(_tlv, tlv, sizeof(tlv)))
1521                 return -EFAULT;
1522         return 0;
1523 }
1524 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_tlv);
1525 
1526 /**
1527  * snd_hda_set_vmaster_tlv - Set TLV for a virtual master control
1528  * @codec: HD-audio codec
1529  * @nid: NID of a reference widget
1530  * @dir: #HDA_INPUT or #HDA_OUTPUT
1531  * @tlv: TLV data to be stored, at least 4 elements
1532  *
1533  * Set (static) TLV data for a virtual master volume using the AMP caps
1534  * obtained from the reference NID.
1535  * The volume range is recalculated as if the max volume is 0dB.
1536  */
1537 void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir,
1538                              unsigned int *tlv)
1539 {
1540         u32 caps;
1541         int nums, step;
1542 
1543         caps = query_amp_caps(codec, nid, dir);
1544         nums = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
1545         step = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT;
1546         step = (step + 1) * 25;
1547         tlv[0] = SNDRV_CTL_TLVT_DB_SCALE;
1548         tlv[1] = 2 * sizeof(unsigned int);
1549         tlv[2] = -nums * step;
1550         tlv[3] = step;
1551 }
1552 EXPORT_SYMBOL_GPL(snd_hda_set_vmaster_tlv);
1553 
1554 /* find a mixer control element with the given name */
1555 static struct snd_kcontrol *
1556 find_mixer_ctl(struct hda_codec *codec, const char *name, int dev, int idx)
1557 {
1558         struct snd_ctl_elem_id id;
1559         memset(&id, 0, sizeof(id));
1560         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1561         id.device = dev;
1562         id.index = idx;
1563         if (snd_BUG_ON(strlen(name) >= sizeof(id.name)))
1564                 return NULL;
1565         strcpy(id.name, name);
1566         return snd_ctl_find_id(codec->card, &id);
1567 }
1568 
1569 /**
1570  * snd_hda_find_mixer_ctl - Find a mixer control element with the given name
1571  * @codec: HD-audio codec
1572  * @name: ctl id name string
1573  *
1574  * Get the control element with the given id string and IFACE_MIXER.
1575  */
1576 struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
1577                                             const char *name)
1578 {
1579         return find_mixer_ctl(codec, name, 0, 0);
1580 }
1581 EXPORT_SYMBOL_GPL(snd_hda_find_mixer_ctl);
1582 
1583 static int find_empty_mixer_ctl_idx(struct hda_codec *codec, const char *name,
1584                                     int start_idx)
1585 {
1586         int i, idx;
1587         /* 16 ctlrs should be large enough */
1588         for (i = 0, idx = start_idx; i < 16; i++, idx++) {
1589                 if (!find_mixer_ctl(codec, name, 0, idx))
1590                         return idx;
1591         }
1592         return -EBUSY;
1593 }
1594 
1595 /**
1596  * snd_hda_ctl_add - Add a control element and assign to the codec
1597  * @codec: HD-audio codec
1598  * @nid: corresponding NID (optional)
1599  * @kctl: the control element to assign
1600  *
1601  * Add the given control element to an array inside the codec instance.
1602  * All control elements belonging to a codec are supposed to be added
1603  * by this function so that a proper clean-up works at the free or
1604  * reconfiguration time.
1605  *
1606  * If non-zero @nid is passed, the NID is assigned to the control element.
1607  * The assignment is shown in the codec proc file.
1608  *
1609  * snd_hda_ctl_add() checks the control subdev id field whether
1610  * #HDA_SUBDEV_NID_FLAG bit is set.  If set (and @nid is zero), the lower
1611  * bits value is taken as the NID to assign. The #HDA_NID_ITEM_AMP bit
1612  * specifies if kctl->private_value is a HDA amplifier value.
1613  */
1614 int snd_hda_ctl_add(struct hda_codec *codec, hda_nid_t nid,
1615                     struct snd_kcontrol *kctl)
1616 {
1617         int err;
1618         unsigned short flags = 0;
1619         struct hda_nid_item *item;
1620 
1621         if (kctl->id.subdevice & HDA_SUBDEV_AMP_FLAG) {
1622                 flags |= HDA_NID_ITEM_AMP;
1623                 if (nid == 0)
1624                         nid = get_amp_nid_(kctl->private_value);
1625         }
1626         if ((kctl->id.subdevice & HDA_SUBDEV_NID_FLAG) != 0 && nid == 0)
1627                 nid = kctl->id.subdevice & 0xffff;
1628         if (kctl->id.subdevice & (HDA_SUBDEV_NID_FLAG|HDA_SUBDEV_AMP_FLAG))
1629                 kctl->id.subdevice = 0;
1630         err = snd_ctl_add(codec->card, kctl);
1631         if (err < 0)
1632                 return err;
1633         item = snd_array_new(&codec->mixers);
1634         if (!item)
1635                 return -ENOMEM;
1636         item->kctl = kctl;
1637         item->nid = nid;
1638         item->flags = flags;
1639         return 0;
1640 }
1641 EXPORT_SYMBOL_GPL(snd_hda_ctl_add);
1642 
1643 /**
1644  * snd_hda_add_nid - Assign a NID to a control element
1645  * @codec: HD-audio codec
1646  * @nid: corresponding NID (optional)
1647  * @kctl: the control element to assign
1648  * @index: index to kctl
1649  *
1650  * Add the given control element to an array inside the codec instance.
1651  * This function is used when #snd_hda_ctl_add cannot be used for 1:1
1652  * NID:KCTL mapping - for example "Capture Source" selector.
1653  */
1654 int snd_hda_add_nid(struct hda_codec *codec, struct snd_kcontrol *kctl,
1655                     unsigned int index, hda_nid_t nid)
1656 {
1657         struct hda_nid_item *item;
1658 
1659         if (nid > 0) {
1660                 item = snd_array_new(&codec->nids);
1661                 if (!item)
1662                         return -ENOMEM;
1663                 item->kctl = kctl;
1664                 item->index = index;
1665                 item->nid = nid;
1666                 return 0;
1667         }
1668         codec_err(codec, "no NID for mapping control %s:%d:%d\n",
1669                   kctl->id.name, kctl->id.index, index);
1670         return -EINVAL;
1671 }
1672 EXPORT_SYMBOL_GPL(snd_hda_add_nid);
1673 
1674 /**
1675  * snd_hda_ctls_clear - Clear all controls assigned to the given codec
1676  * @codec: HD-audio codec
1677  */
1678 void snd_hda_ctls_clear(struct hda_codec *codec)
1679 {
1680         int i;
1681         struct hda_nid_item *items = codec->mixers.list;
1682         for (i = 0; i < codec->mixers.used; i++)
1683                 snd_ctl_remove(codec->card, items[i].kctl);
1684         snd_array_free(&codec->mixers);
1685         snd_array_free(&codec->nids);
1686 }
1687 
1688 /**
1689  * snd_hda_lock_devices - pseudo device locking
1690  * @bus: the BUS
1691  *
1692  * toggle card->shutdown to allow/disallow the device access (as a hack)
1693  */
1694 int snd_hda_lock_devices(struct hda_bus *bus)
1695 {
1696         struct snd_card *card = bus->card;
1697         struct hda_codec *codec;
1698 
1699         spin_lock(&card->files_lock);
1700         if (card->shutdown)
1701                 goto err_unlock;
1702         card->shutdown = 1;
1703         if (!list_empty(&card->ctl_files))
1704                 goto err_clear;
1705 
1706         list_for_each_codec(codec, bus) {
1707                 struct hda_pcm *cpcm;
1708                 list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
1709                         if (!cpcm->pcm)
1710                                 continue;
1711                         if (cpcm->pcm->streams[0].substream_opened ||
1712                             cpcm->pcm->streams[1].substream_opened)
1713                                 goto err_clear;
1714                 }
1715         }
1716         spin_unlock(&card->files_lock);
1717         return 0;
1718 
1719  err_clear:
1720         card->shutdown = 0;
1721  err_unlock:
1722         spin_unlock(&card->files_lock);
1723         return -EINVAL;
1724 }
1725 EXPORT_SYMBOL_GPL(snd_hda_lock_devices);
1726 
1727 /**
1728  * snd_hda_unlock_devices - pseudo device unlocking
1729  * @bus: the BUS
1730  */
1731 void snd_hda_unlock_devices(struct hda_bus *bus)
1732 {
1733         struct snd_card *card = bus->card;
1734 
1735         spin_lock(&card->files_lock);
1736         card->shutdown = 0;
1737         spin_unlock(&card->files_lock);
1738 }
1739 EXPORT_SYMBOL_GPL(snd_hda_unlock_devices);
1740 
1741 /**
1742  * snd_hda_codec_reset - Clear all objects assigned to the codec
1743  * @codec: HD-audio codec
1744  *
1745  * This frees the all PCM and control elements assigned to the codec, and
1746  * clears the caches and restores the pin default configurations.
1747  *
1748  * When a device is being used, it returns -EBSY.  If successfully freed,
1749  * returns zero.
1750  */
1751 int snd_hda_codec_reset(struct hda_codec *codec)
1752 {
1753         struct hda_bus *bus = codec->bus;
1754 
1755         if (snd_hda_lock_devices(bus) < 0)
1756                 return -EBUSY;
1757 
1758         /* OK, let it free */
1759         snd_hdac_device_unregister(&codec->core);
1760 
1761         /* allow device access again */
1762         snd_hda_unlock_devices(bus);
1763         return 0;
1764 }
1765 
1766 typedef int (*map_slave_func_t)(struct hda_codec *, void *, struct snd_kcontrol *);
1767 
1768 /* apply the function to all matching slave ctls in the mixer list */
1769 static int map_slaves(struct hda_codec *codec, const char * const *slaves,
1770                       const char *suffix, map_slave_func_t func, void *data) 
1771 {
1772         struct hda_nid_item *items;
1773         const char * const *s;
1774         int i, err;
1775 
1776         items = codec->mixers.list;
1777         for (i = 0; i < codec->mixers.used; i++) {
1778                 struct snd_kcontrol *sctl = items[i].kctl;
1779                 if (!sctl || sctl->id.iface != SNDRV_CTL_ELEM_IFACE_MIXER)
1780                         continue;
1781                 for (s = slaves; *s; s++) {
1782                         char tmpname[sizeof(sctl->id.name)];
1783                         const char *name = *s;
1784                         if (suffix) {
1785                                 snprintf(tmpname, sizeof(tmpname), "%s %s",
1786                                          name, suffix);
1787                                 name = tmpname;
1788                         }
1789                         if (!strcmp(sctl->id.name, name)) {
1790                                 err = func(codec, data, sctl);
1791                                 if (err)
1792                                         return err;
1793                                 break;
1794                         }
1795                 }
1796         }
1797         return 0;
1798 }
1799 
1800 static int check_slave_present(struct hda_codec *codec,
1801                                void *data, struct snd_kcontrol *sctl)
1802 {
1803         return 1;
1804 }
1805 
1806 /* call kctl->put with the given value(s) */
1807 static int put_kctl_with_value(struct snd_kcontrol *kctl, int val)
1808 {
1809         struct snd_ctl_elem_value *ucontrol;
1810         ucontrol = kzalloc(sizeof(*ucontrol), GFP_KERNEL);
1811         if (!ucontrol)
1812                 return -ENOMEM;
1813         ucontrol->value.integer.value[0] = val;
1814         ucontrol->value.integer.value[1] = val;
1815         kctl->put(kctl, ucontrol);
1816         kfree(ucontrol);
1817         return 0;
1818 }
1819 
1820 struct slave_init_arg {
1821         struct hda_codec *codec;
1822         int step;
1823 };
1824 
1825 /* initialize the slave volume with 0dB via snd_ctl_apply_vmaster_slaves() */
1826 static int init_slave_0dB(struct snd_kcontrol *slave,
1827                           struct snd_kcontrol *kctl,
1828                           void *_arg)
1829 {
1830         struct slave_init_arg *arg = _arg;
1831         int _tlv[4];
1832         const int *tlv = NULL;
1833         int step;
1834         int val;
1835 
1836         if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
1837                 if (kctl->tlv.c != snd_hda_mixer_amp_tlv) {
1838                         codec_err(arg->codec,
1839                                   "Unexpected TLV callback for slave %s:%d\n",
1840                                   kctl->id.name, kctl->id.index);
1841                         return 0; /* ignore */
1842                 }
1843                 get_ctl_amp_tlv(kctl, _tlv);
1844                 tlv = _tlv;
1845         } else if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_READ)
1846                 tlv = kctl->tlv.p;
1847 
1848         if (!tlv || tlv[0] != SNDRV_CTL_TLVT_DB_SCALE)
1849                 return 0;
1850 
1851         step = tlv[3];
1852         step &= ~TLV_DB_SCALE_MUTE;
1853         if (!step)
1854                 return 0;
1855         if (arg->step && arg->step != step) {
1856                 codec_err(arg->codec,
1857                           "Mismatching dB step for vmaster slave (%d!=%d)\n",
1858                           arg->step, step);
1859                 return 0;
1860         }
1861 
1862         arg->step = step;
1863         val = -tlv[2] / step;
1864         if (val > 0) {
1865                 put_kctl_with_value(slave, val);
1866                 return val;
1867         }
1868 
1869         return 0;
1870 }
1871 
1872 /* unmute the slave via snd_ctl_apply_vmaster_slaves() */
1873 static int init_slave_unmute(struct snd_kcontrol *slave,
1874                              struct snd_kcontrol *kctl,
1875                              void *_arg)
1876 {
1877         return put_kctl_with_value(slave, 1);
1878 }
1879 
1880 static int add_slave(struct hda_codec *codec,
1881                      void *data, struct snd_kcontrol *slave)
1882 {
1883         return snd_ctl_add_slave(data, slave);
1884 }
1885 
1886 /**
1887  * __snd_hda_add_vmaster - create a virtual master control and add slaves
1888  * @codec: HD-audio codec
1889  * @name: vmaster control name
1890  * @tlv: TLV data (optional)
1891  * @slaves: slave control names (optional)
1892  * @suffix: suffix string to each slave name (optional)
1893  * @init_slave_vol: initialize slaves to unmute/0dB
1894  * @ctl_ret: store the vmaster kcontrol in return
1895  *
1896  * Create a virtual master control with the given name.  The TLV data
1897  * must be either NULL or a valid data.
1898  *
1899  * @slaves is a NULL-terminated array of strings, each of which is a
1900  * slave control name.  All controls with these names are assigned to
1901  * the new virtual master control.
1902  *
1903  * This function returns zero if successful or a negative error code.
1904  */
1905 int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
1906                         unsigned int *tlv, const char * const *slaves,
1907                           const char *suffix, bool init_slave_vol,
1908                           struct snd_kcontrol **ctl_ret)
1909 {
1910         struct snd_kcontrol *kctl;
1911         int err;
1912 
1913         if (ctl_ret)
1914                 *ctl_ret = NULL;
1915 
1916         err = map_slaves(codec, slaves, suffix, check_slave_present, NULL);
1917         if (err != 1) {
1918                 codec_dbg(codec, "No slave found for %s\n", name);
1919                 return 0;
1920         }
1921         kctl = snd_ctl_make_virtual_master(name, tlv);
1922         if (!kctl)
1923                 return -ENOMEM;
1924         err = snd_hda_ctl_add(codec, 0, kctl);
1925         if (err < 0)
1926                 return err;
1927 
1928         err = map_slaves(codec, slaves, suffix, add_slave, kctl);
1929         if (err < 0)
1930                 return err;
1931 
1932         /* init with master mute & zero volume */
1933         put_kctl_with_value(kctl, 0);
1934         if (init_slave_vol) {
1935                 struct slave_init_arg arg = {
1936                         .codec = codec,
1937                         .step = 0,
1938                 };
1939                 snd_ctl_apply_vmaster_slaves(kctl,
1940                                              tlv ? init_slave_0dB : init_slave_unmute,
1941                                              &arg);
1942         }
1943 
1944         if (ctl_ret)
1945                 *ctl_ret = kctl;
1946         return 0;
1947 }
1948 EXPORT_SYMBOL_GPL(__snd_hda_add_vmaster);
1949 
1950 /*
1951  * mute-LED control using vmaster
1952  */
1953 static int vmaster_mute_mode_info(struct snd_kcontrol *kcontrol,
1954                                   struct snd_ctl_elem_info *uinfo)
1955 {
1956         static const char * const texts[] = {
1957                 "On", "Off", "Follow Master"
1958         };
1959 
1960         return snd_ctl_enum_info(uinfo, 1, 3, texts);
1961 }
1962 
1963 static int vmaster_mute_mode_get(struct snd_kcontrol *kcontrol,
1964                                  struct snd_ctl_elem_value *ucontrol)
1965 {
1966         struct hda_vmaster_mute_hook *hook = snd_kcontrol_chip(kcontrol);
1967         ucontrol->value.enumerated.item[0] = hook->mute_mode;
1968         return 0;
1969 }
1970 
1971 static int vmaster_mute_mode_put(struct snd_kcontrol *kcontrol,
1972                                  struct snd_ctl_elem_value *ucontrol)
1973 {
1974         struct hda_vmaster_mute_hook *hook = snd_kcontrol_chip(kcontrol);
1975         unsigned int old_mode = hook->mute_mode;
1976 
1977         hook->mute_mode = ucontrol->value.enumerated.item[0];
1978         if (hook->mute_mode > HDA_VMUTE_FOLLOW_MASTER)
1979                 hook->mute_mode = HDA_VMUTE_FOLLOW_MASTER;
1980         if (old_mode == hook->mute_mode)
1981                 return 0;
1982         snd_hda_sync_vmaster_hook(hook);
1983         return 1;
1984 }
1985 
1986 static const struct snd_kcontrol_new vmaster_mute_mode = {
1987         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1988         .name = "Mute-LED Mode",
1989         .info = vmaster_mute_mode_info,
1990         .get = vmaster_mute_mode_get,
1991         .put = vmaster_mute_mode_put,
1992 };
1993 
1994 /* meta hook to call each driver's vmaster hook */
1995 static void vmaster_hook(void *private_data, int enabled)
1996 {
1997         struct hda_vmaster_mute_hook *hook = private_data;
1998 
1999         if (hook->mute_mode != HDA_VMUTE_FOLLOW_MASTER)
2000                 enabled = hook->mute_mode;
2001         hook->hook(hook->codec, enabled);
2002 }
2003 
2004 /**
2005  * snd_hda_add_vmaster_hook - Add a vmaster hook for mute-LED
2006  * @codec: the HDA codec
2007  * @hook: the vmaster hook object
2008  * @expose_enum_ctl: flag to create an enum ctl
2009  *
2010  * Add a mute-LED hook with the given vmaster switch kctl.
2011  * When @expose_enum_ctl is set, "Mute-LED Mode" control is automatically
2012  * created and associated with the given hook.
2013  */
2014 int snd_hda_add_vmaster_hook(struct hda_codec *codec,
2015                              struct hda_vmaster_mute_hook *hook,
2016                              bool expose_enum_ctl)
2017 {
2018         struct snd_kcontrol *kctl;
2019 
2020         if (!hook->hook || !hook->sw_kctl)
2021                 return 0;
2022         hook->codec = codec;
2023         hook->mute_mode = HDA_VMUTE_FOLLOW_MASTER;
2024         snd_ctl_add_vmaster_hook(hook->sw_kctl, vmaster_hook, hook);
2025         if (!expose_enum_ctl)
2026                 return 0;
2027         kctl = snd_ctl_new1(&vmaster_mute_mode, hook);
2028         if (!kctl)
2029                 return -ENOMEM;
2030         return snd_hda_ctl_add(codec, 0, kctl);
2031 }
2032 EXPORT_SYMBOL_GPL(snd_hda_add_vmaster_hook);
2033 
2034 /**
2035  * snd_hda_sync_vmaster_hook - Sync vmaster hook
2036  * @hook: the vmaster hook
2037  *
2038  * Call the hook with the current value for synchronization.
2039  * Should be called in init callback.
2040  */
2041 void snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook *hook)
2042 {
2043         if (!hook->hook || !hook->codec)
2044                 return;
2045         /* don't call vmaster hook in the destructor since it might have
2046          * been already destroyed
2047          */
2048         if (hook->codec->bus->shutdown)
2049                 return;
2050         snd_ctl_sync_vmaster_hook(hook->sw_kctl);
2051 }
2052 EXPORT_SYMBOL_GPL(snd_hda_sync_vmaster_hook);
2053 
2054 
2055 /**
2056  * snd_hda_mixer_amp_switch_info - Info callback for a standard AMP mixer switch
2057  * @kcontrol: referred ctl element
2058  * @uinfo: pointer to get/store the data
2059  *
2060  * The control element is supposed to have the private_value field
2061  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2062  */
2063 int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol,
2064                                   struct snd_ctl_elem_info *uinfo)
2065 {
2066         int chs = get_amp_channels(kcontrol);
2067 
2068         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2069         uinfo->count = chs == 3 ? 2 : 1;
2070         uinfo->value.integer.min = 0;
2071         uinfo->value.integer.max = 1;
2072         return 0;
2073 }
2074 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_info);
2075 
2076 /**
2077  * snd_hda_mixer_amp_switch_get - Get callback for a standard AMP mixer switch
2078  * @kcontrol: ctl element
2079  * @ucontrol: pointer to get/store the data
2080  *
2081  * The control element is supposed to have the private_value field
2082  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2083  */
2084 int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol,
2085                                  struct snd_ctl_elem_value *ucontrol)
2086 {
2087         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2088         hda_nid_t nid = get_amp_nid(kcontrol);
2089         int chs = get_amp_channels(kcontrol);
2090         int dir = get_amp_direction(kcontrol);
2091         int idx = get_amp_index(kcontrol);
2092         long *valp = ucontrol->value.integer.value;
2093 
2094         if (chs & 1)
2095                 *valp++ = (snd_hda_codec_amp_read(codec, nid, 0, dir, idx) &
2096                            HDA_AMP_MUTE) ? 0 : 1;
2097         if (chs & 2)
2098                 *valp = (snd_hda_codec_amp_read(codec, nid, 1, dir, idx) &
2099                          HDA_AMP_MUTE) ? 0 : 1;
2100         return 0;
2101 }
2102 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_get);
2103 
2104 /**
2105  * snd_hda_mixer_amp_switch_put - Put callback for a standard AMP mixer switch
2106  * @kcontrol: ctl element
2107  * @ucontrol: pointer to get/store the data
2108  *
2109  * The control element is supposed to have the private_value field
2110  * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
2111  */
2112 int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
2113                                  struct snd_ctl_elem_value *ucontrol)
2114 {
2115         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2116         hda_nid_t nid = get_amp_nid(kcontrol);
2117         int chs = get_amp_channels(kcontrol);
2118         int dir = get_amp_direction(kcontrol);
2119         int idx = get_amp_index(kcontrol);
2120         long *valp = ucontrol->value.integer.value;
2121         int change = 0;
2122 
2123         if (chs & 1) {
2124                 change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
2125                                                   HDA_AMP_MUTE,
2126                                                   *valp ? 0 : HDA_AMP_MUTE);
2127                 valp++;
2128         }
2129         if (chs & 2)
2130                 change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
2131                                                    HDA_AMP_MUTE,
2132                                                    *valp ? 0 : HDA_AMP_MUTE);
2133         hda_call_check_power_status(codec, nid);
2134         return change;
2135 }
2136 EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_put);
2137 
2138 /*
2139  * SPDIF out controls
2140  */
2141 
2142 static int snd_hda_spdif_mask_info(struct snd_kcontrol *kcontrol,
2143                                    struct snd_ctl_elem_info *uinfo)
2144 {
2145         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2146         uinfo->count = 1;
2147         return 0;
2148 }
2149 
2150 static int snd_hda_spdif_cmask_get(struct snd_kcontrol *kcontrol,
2151                                    struct snd_ctl_elem_value *ucontrol)
2152 {
2153         ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
2154                                            IEC958_AES0_NONAUDIO |
2155                                            IEC958_AES0_CON_EMPHASIS_5015 |
2156                                            IEC958_AES0_CON_NOT_COPYRIGHT;
2157         ucontrol->value.iec958.status[1] = IEC958_AES1_CON_CATEGORY |
2158                                            IEC958_AES1_CON_ORIGINAL;
2159         return 0;
2160 }
2161 
2162 static int snd_hda_spdif_pmask_get(struct snd_kcontrol *kcontrol,
2163                                    struct snd_ctl_elem_value *ucontrol)
2164 {
2165         ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
2166                                            IEC958_AES0_NONAUDIO |
2167                                            IEC958_AES0_PRO_EMPHASIS_5015;
2168         return 0;
2169 }
2170 
2171 static int snd_hda_spdif_default_get(struct snd_kcontrol *kcontrol,
2172                                      struct snd_ctl_elem_value *ucontrol)
2173 {
2174         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2175         int idx = kcontrol->private_value;
2176         struct hda_spdif_out *spdif;
2177 
2178         mutex_lock(&codec->spdif_mutex);
2179         spdif = snd_array_elem(&codec->spdif_out, idx);
2180         ucontrol->value.iec958.status[0] = spdif->status & 0xff;
2181         ucontrol->value.iec958.status[1] = (spdif->status >> 8) & 0xff;
2182         ucontrol->value.iec958.status[2] = (spdif->status >> 16) & 0xff;
2183         ucontrol->value.iec958.status[3] = (spdif->status >> 24) & 0xff;
2184         mutex_unlock(&codec->spdif_mutex);
2185 
2186         return 0;
2187 }
2188 
2189 /* convert from SPDIF status bits to HDA SPDIF bits
2190  * bit 0 (DigEn) is always set zero (to be filled later)
2191  */
2192 static unsigned short convert_from_spdif_status(unsigned int sbits)
2193 {
2194         unsigned short val = 0;
2195 
2196         if (sbits & IEC958_AES0_PROFESSIONAL)
2197                 val |= AC_DIG1_PROFESSIONAL;
2198         if (sbits & IEC958_AES0_NONAUDIO)
2199                 val |= AC_DIG1_NONAUDIO;
2200         if (sbits & IEC958_AES0_PROFESSIONAL) {
2201                 if ((sbits & IEC958_AES0_PRO_EMPHASIS) ==
2202                     IEC958_AES0_PRO_EMPHASIS_5015)
2203                         val |= AC_DIG1_EMPHASIS;
2204         } else {
2205                 if ((sbits & IEC958_AES0_CON_EMPHASIS) ==
2206                     IEC958_AES0_CON_EMPHASIS_5015)
2207                         val |= AC_DIG1_EMPHASIS;
2208                 if (!(sbits & IEC958_AES0_CON_NOT_COPYRIGHT))
2209                         val |= AC_DIG1_COPYRIGHT;
2210                 if (sbits & (IEC958_AES1_CON_ORIGINAL << 8))
2211                         val |= AC_DIG1_LEVEL;
2212                 val |= sbits & (IEC958_AES1_CON_CATEGORY << 8);
2213         }
2214         return val;
2215 }
2216 
2217 /* convert to SPDIF status bits from HDA SPDIF bits
2218  */
2219 static unsigned int convert_to_spdif_status(unsigned short val)
2220 {
2221         unsigned int sbits = 0;
2222 
2223         if (val & AC_DIG1_NONAUDIO)
2224                 sbits |= IEC958_AES0_NONAUDIO;
2225         if (val & AC_DIG1_PROFESSIONAL)
2226                 sbits |= IEC958_AES0_PROFESSIONAL;
2227         if (sbits & IEC958_AES0_PROFESSIONAL) {
2228                 if (val & AC_DIG1_EMPHASIS)
2229                         sbits |= IEC958_AES0_PRO_EMPHASIS_5015;
2230         } else {
2231                 if (val & AC_DIG1_EMPHASIS)
2232                         sbits |= IEC958_AES0_CON_EMPHASIS_5015;
2233                 if (!(val & AC_DIG1_COPYRIGHT))
2234                         sbits |= IEC958_AES0_CON_NOT_COPYRIGHT;
2235                 if (val & AC_DIG1_LEVEL)
2236                         sbits |= (IEC958_AES1_CON_ORIGINAL << 8);
2237                 sbits |= val & (0x7f << 8);
2238         }
2239         return sbits;
2240 }
2241 
2242 /* set digital convert verbs both for the given NID and its slaves */
2243 static void set_dig_out(struct hda_codec *codec, hda_nid_t nid,
2244                         int mask, int val)
2245 {
2246         const hda_nid_t *d;
2247 
2248         snd_hdac_regmap_update(&codec->core, nid, AC_VERB_SET_DIGI_CONVERT_1,
2249                                mask, val);
2250         d = codec->slave_dig_outs;
2251         if (!d)
2252                 return;
2253         for (; *d; d++)
2254                 snd_hdac_regmap_update(&codec->core, *d,
2255                                        AC_VERB_SET_DIGI_CONVERT_1, mask, val);
2256 }
2257 
2258 static inline void set_dig_out_convert(struct hda_codec *codec, hda_nid_t nid,
2259                                        int dig1, int dig2)
2260 {
2261         unsigned int mask = 0;
2262         unsigned int val = 0;
2263 
2264         if (dig1 != -1) {
2265                 mask |= 0xff;
2266                 val = dig1;
2267         }
2268         if (dig2 != -1) {
2269                 mask |= 0xff00;
2270                 val |= dig2 << 8;
2271         }
2272         set_dig_out(codec, nid, mask, val);
2273 }
2274 
2275 static int snd_hda_spdif_default_put(struct snd_kcontrol *kcontrol,
2276                                      struct snd_ctl_elem_value *ucontrol)
2277 {
2278         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2279         int idx = kcontrol->private_value;
2280         struct hda_spdif_out *spdif;
2281         hda_nid_t nid;
2282         unsigned short val;
2283         int change;
2284 
2285         mutex_lock(&codec->spdif_mutex);
2286         spdif = snd_array_elem(&codec->spdif_out, idx);
2287         nid = spdif->nid;
2288         spdif->status = ucontrol->value.iec958.status[0] |
2289                 ((unsigned int)ucontrol->value.iec958.status[1] << 8) |
2290                 ((unsigned int)ucontrol->value.iec958.status[2] << 16) |
2291                 ((unsigned int)ucontrol->value.iec958.status[3] << 24);
2292         val = convert_from_spdif_status(spdif->status);
2293         val |= spdif->ctls & 1;
2294         change = spdif->ctls != val;
2295         spdif->ctls = val;
2296         if (change && nid != (u16)-1)
2297                 set_dig_out_convert(codec, nid, val & 0xff, (val >> 8) & 0xff);
2298         mutex_unlock(&codec->spdif_mutex);
2299         return change;
2300 }
2301 
2302 #define snd_hda_spdif_out_switch_info   snd_ctl_boolean_mono_info
2303 
2304 static int snd_hda_spdif_out_switch_get(struct snd_kcontrol *kcontrol,
2305                                         struct snd_ctl_elem_value *ucontrol)
2306 {
2307         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2308         int idx = kcontrol->private_value;
2309         struct hda_spdif_out *spdif;
2310 
2311         mutex_lock(&codec->spdif_mutex);
2312         spdif = snd_array_elem(&codec->spdif_out, idx);
2313         ucontrol->value.integer.value[0] = spdif->ctls & AC_DIG1_ENABLE;
2314         mutex_unlock(&codec->spdif_mutex);
2315         return 0;
2316 }
2317 
2318 static inline void set_spdif_ctls(struct hda_codec *codec, hda_nid_t nid,
2319                                   int dig1, int dig2)
2320 {
2321         set_dig_out_convert(codec, nid, dig1, dig2);
2322         /* unmute amp switch (if any) */
2323         if ((get_wcaps(codec, nid) & AC_WCAP_OUT_AMP) &&
2324             (dig1 & AC_DIG1_ENABLE))
2325                 snd_hda_codec_amp_stereo(codec, nid, HDA_OUTPUT, 0,
2326                                             HDA_AMP_MUTE, 0);
2327 }
2328 
2329 static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol,
2330                                         struct snd_ctl_elem_value *ucontrol)
2331 {
2332         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2333         int idx = kcontrol->private_value;
2334         struct hda_spdif_out *spdif;
2335         hda_nid_t nid;
2336         unsigned short val;
2337         int change;
2338 
2339         mutex_lock(&codec->spdif_mutex);
2340         spdif = snd_array_elem(&codec->spdif_out, idx);
2341         nid = spdif->nid;
2342         val = spdif->ctls & ~AC_DIG1_ENABLE;
2343         if (ucontrol->value.integer.value[0])
2344                 val |= AC_DIG1_ENABLE;
2345         change = spdif->ctls != val;
2346         spdif->ctls = val;
2347         if (change && nid != (u16)-1)
2348                 set_spdif_ctls(codec, nid, val & 0xff, -1);
2349         mutex_unlock(&codec->spdif_mutex);
2350         return change;
2351 }
2352 
2353 static struct snd_kcontrol_new dig_mixes[] = {
2354         {
2355                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
2356                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2357                 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK),
2358                 .info = snd_hda_spdif_mask_info,
2359                 .get = snd_hda_spdif_cmask_get,
2360         },
2361         {
2362                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
2363                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2364                 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PRO_MASK),
2365                 .info = snd_hda_spdif_mask_info,
2366                 .get = snd_hda_spdif_pmask_get,
2367         },
2368         {
2369                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2370                 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
2371                 .info = snd_hda_spdif_mask_info,
2372                 .get = snd_hda_spdif_default_get,
2373                 .put = snd_hda_spdif_default_put,
2374         },
2375         {
2376                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2377                 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
2378                 .info = snd_hda_spdif_out_switch_info,
2379                 .get = snd_hda_spdif_out_switch_get,
2380                 .put = snd_hda_spdif_out_switch_put,
2381         },
2382         { } /* end */
2383 };
2384 
2385 /**
2386  * snd_hda_create_dig_out_ctls - create Output SPDIF-related controls
2387  * @codec: the HDA codec
2388  * @associated_nid: NID that new ctls associated with
2389  * @cvt_nid: converter NID
2390  * @type: HDA_PCM_TYPE_*
2391  * Creates controls related with the digital output.
2392  * Called from each patch supporting the digital out.
2393  *
2394  * Returns 0 if successful, or a negative error code.
2395  */
2396 int snd_hda_create_dig_out_ctls(struct hda_codec *codec,
2397                                 hda_nid_t associated_nid,
2398                                 hda_nid_t cvt_nid,
2399                                 int type)
2400 {
2401         int err;
2402         struct snd_kcontrol *kctl;
2403         struct snd_kcontrol_new *dig_mix;
2404         int idx = 0;
2405         int val = 0;
2406         const int spdif_index = 16;
2407         struct hda_spdif_out *spdif;
2408         struct hda_bus *bus = codec->bus;
2409 
2410         if (bus->primary_dig_out_type == HDA_PCM_TYPE_HDMI &&
2411             type == HDA_PCM_TYPE_SPDIF) {
2412                 idx = spdif_index;
2413         } else if (bus->primary_dig_out_type == HDA_PCM_TYPE_SPDIF &&
2414                    type == HDA_PCM_TYPE_HDMI) {
2415                 /* suppose a single SPDIF device */
2416                 for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
2417                         kctl = find_mixer_ctl(codec, dig_mix->name, 0, 0);
2418                         if (!kctl)
2419                                 break;
2420                         kctl->id.index = spdif_index;
2421                 }
2422                 bus->primary_dig_out_type = HDA_PCM_TYPE_HDMI;
2423         }
2424         if (!bus->primary_dig_out_type)
2425                 bus->primary_dig_out_type = type;
2426 
2427         idx = find_empty_mixer_ctl_idx(codec, "IEC958 Playback Switch", idx);
2428         if (idx < 0) {
2429                 codec_err(codec, "too many IEC958 outputs\n");
2430                 return -EBUSY;
2431         }
2432         spdif = snd_array_new(&codec->spdif_out);
2433         if (!spdif)
2434                 return -ENOMEM;
2435         for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
2436                 kctl = snd_ctl_new1(dig_mix, codec);
2437                 if (!kctl)
2438                         return -ENOMEM;
2439                 kctl->id.index = idx;
2440                 kctl->private_value = codec->spdif_out.used - 1;
2441                 err = snd_hda_ctl_add(codec, associated_nid, kctl);
2442                 if (err < 0)
2443                         return err;
2444         }
2445         spdif->nid = cvt_nid;
2446         snd_hdac_regmap_read(&codec->core, cvt_nid,
2447                              AC_VERB_GET_DIGI_CONVERT_1, &val);
2448         spdif->ctls = val;
2449         spdif->status = convert_to_spdif_status(spdif->ctls);
2450         return 0;
2451 }
2452 EXPORT_SYMBOL_GPL(snd_hda_create_dig_out_ctls);
2453 
2454 /**
2455  * snd_hda_spdif_out_of_nid - get the hda_spdif_out entry from the given NID
2456  * @codec: the HDA codec
2457  * @nid: widget NID
2458  *
2459  * call within spdif_mutex lock
2460  */
2461 struct hda_spdif_out *snd_hda_spdif_out_of_nid(struct hda_codec *codec,
2462                                                hda_nid_t nid)
2463 {
2464         int i;
2465         for (i = 0; i < codec->spdif_out.used; i++) {
2466                 struct hda_spdif_out *spdif =
2467                                 snd_array_elem(&codec->spdif_out, i);
2468                 if (spdif->nid == nid)
2469                         return spdif;
2470         }
2471         return NULL;
2472 }
2473 EXPORT_SYMBOL_GPL(snd_hda_spdif_out_of_nid);
2474 
2475 /**
2476  * snd_hda_spdif_ctls_unassign - Unassign the given SPDIF ctl
2477  * @codec: the HDA codec
2478  * @idx: the SPDIF ctl index
2479  *
2480  * Unassign the widget from the given SPDIF control.
2481  */
2482 void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx)
2483 {
2484         struct hda_spdif_out *spdif;
2485 
2486         mutex_lock(&codec->spdif_mutex);
2487         spdif = snd_array_elem(&codec->spdif_out, idx);
2488         spdif->nid = (u16)-1;
2489         mutex_unlock(&codec->spdif_mutex);
2490 }
2491 EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_unassign);
2492 
2493 /**
2494  * snd_hda_spdif_ctls_assign - Assign the SPDIF controls to the given NID
2495  * @codec: the HDA codec
2496  * @idx: the SPDIF ctl idx
2497  * @nid: widget NID
2498  *
2499  * Assign the widget to the SPDIF control with the given index.
2500  */
2501 void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid)
2502 {
2503         struct hda_spdif_out *spdif;
2504         unsigned short val;
2505 
2506         mutex_lock(&codec->spdif_mutex);
2507         spdif = snd_array_elem(&codec->spdif_out, idx);
2508         if (spdif->nid != nid) {
2509                 spdif->nid = nid;
2510                 val = spdif->ctls;
2511                 set_spdif_ctls(codec, nid, val & 0xff, (val >> 8) & 0xff);
2512         }
2513         mutex_unlock(&codec->spdif_mutex);
2514 }
2515 EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_assign);
2516 
2517 /*
2518  * SPDIF sharing with analog output
2519  */
2520 static int spdif_share_sw_get(struct snd_kcontrol *kcontrol,
2521                               struct snd_ctl_elem_value *ucontrol)
2522 {
2523         struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol);
2524         ucontrol->value.integer.value[0] = mout->share_spdif;
2525         return 0;
2526 }
2527 
2528 static int spdif_share_sw_put(struct snd_kcontrol *kcontrol,
2529                               struct snd_ctl_elem_value *ucontrol)
2530 {
2531         struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol);
2532         mout->share_spdif = !!ucontrol->value.integer.value[0];
2533         return 0;
2534 }
2535 
2536 static const struct snd_kcontrol_new spdif_share_sw = {
2537         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2538         .name = "IEC958 Default PCM Playback Switch",
2539         .info = snd_ctl_boolean_mono_info,
2540         .get = spdif_share_sw_get,
2541         .put = spdif_share_sw_put,
2542 };
2543 
2544 /**
2545  * snd_hda_create_spdif_share_sw - create Default PCM switch
2546  * @codec: the HDA codec
2547  * @mout: multi-out instance
2548  */
2549 int snd_hda_create_spdif_share_sw(struct hda_codec *codec,
2550                                   struct hda_multi_out *mout)
2551 {
2552         struct snd_kcontrol *kctl;
2553 
2554         if (!mout->dig_out_nid)
2555                 return 0;
2556 
2557         kctl = snd_ctl_new1(&spdif_share_sw, mout);
2558         if (!kctl)
2559                 return -ENOMEM;
2560         /* ATTENTION: here mout is passed as private_data, instead of codec */
2561         return snd_hda_ctl_add(codec, mout->dig_out_nid, kctl);
2562 }
2563 EXPORT_SYMBOL_GPL(snd_hda_create_spdif_share_sw);
2564 
2565 /*
2566  * SPDIF input
2567  */
2568 
2569 #define snd_hda_spdif_in_switch_info    snd_hda_spdif_out_switch_info
2570 
2571 static int snd_hda_spdif_in_switch_get(struct snd_kcontrol *kcontrol,
2572                                        struct snd_ctl_elem_value *ucontrol)
2573 {
2574         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2575 
2576         ucontrol->value.integer.value[0] = codec->spdif_in_enable;
2577         return 0;
2578 }
2579 
2580 static int snd_hda_spdif_in_switch_put(struct snd_kcontrol *kcontrol,
2581                                        struct snd_ctl_elem_value *ucontrol)
2582 {
2583         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2584         hda_nid_t nid = kcontrol->private_value;
2585         unsigned int val = !!ucontrol->value.integer.value[0];
2586         int change;
2587 
2588         mutex_lock(&codec->spdif_mutex);
2589         change = codec->spdif_in_enable != val;
2590         if (change) {
2591                 codec->spdif_in_enable = val;
2592                 snd_hdac_regmap_write(&codec->core, nid,
2593                                       AC_VERB_SET_DIGI_CONVERT_1, val);
2594         }
2595         mutex_unlock(&codec->spdif_mutex);
2596         return change;
2597 }
2598 
2599 static int snd_hda_spdif_in_status_get(struct snd_kcontrol *kcontrol,
2600                                        struct snd_ctl_elem_value *ucontrol)
2601 {
2602         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
2603         hda_nid_t nid = kcontrol->private_value;
2604         unsigned int val;
2605         unsigned int sbits;
2606 
2607         snd_hdac_regmap_read(&codec->core, nid,
2608                              AC_VERB_GET_DIGI_CONVERT_1, &val);
2609         sbits = convert_to_spdif_status(val);
2610         ucontrol->value.iec958.status[0] = sbits;
2611         ucontrol->value.iec958.status[1] = sbits >> 8;
2612         ucontrol->value.iec958.status[2] = sbits >> 16;
2613         ucontrol->value.iec958.status[3] = sbits >> 24;
2614         return 0;
2615 }
2616 
2617 static struct snd_kcontrol_new dig_in_ctls[] = {
2618         {
2619                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2620                 .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, SWITCH),
2621                 .info = snd_hda_spdif_in_switch_info,
2622                 .get = snd_hda_spdif_in_switch_get,
2623                 .put = snd_hda_spdif_in_switch_put,
2624         },
2625         {
2626                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
2627                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2628                 .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
2629                 .info = snd_hda_spdif_mask_info,
2630                 .get = snd_hda_spdif_in_status_get,
2631         },
2632         { } /* end */
2633 };
2634 
2635 /**
2636  * snd_hda_create_spdif_in_ctls - create Input SPDIF-related controls
2637  * @codec: the HDA codec
2638  * @nid: audio in widget NID
2639  *
2640  * Creates controls related with the SPDIF input.
2641  * Called from each patch supporting the SPDIF in.
2642  *
2643  * Returns 0 if successful, or a negative error code.
2644  */
2645 int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid)
2646 {
2647         int err;
2648         struct snd_kcontrol *kctl;
2649         struct snd_kcontrol_new *dig_mix;
2650         int idx;
2651 
2652         idx = find_empty_mixer_ctl_idx(codec, "IEC958 Capture Switch", 0);
2653         if (idx < 0) {
2654                 codec_err(codec, "too many IEC958 inputs\n");
2655                 return -EBUSY;
2656         }
2657         for (dig_mix = dig_in_ctls; dig_mix->name; dig_mix++) {
2658                 kctl = snd_ctl_new1(dig_mix, codec);
2659                 if (!kctl)
2660                         return -ENOMEM;
2661                 kctl->private_value = nid;
2662                 err = snd_hda_ctl_add(codec, nid, kctl);
2663                 if (err < 0)
2664                         return err;
2665         }
2666         codec->spdif_in_enable =
2667                 snd_hda_codec_read(codec, nid, 0,
2668                                    AC_VERB_GET_DIGI_CONVERT_1, 0) &
2669                 AC_DIG1_ENABLE;
2670         return 0;
2671 }
2672 EXPORT_SYMBOL_GPL(snd_hda_create_spdif_in_ctls);
2673 
2674 /**
2675  * snd_hda_codec_set_power_to_all - Set the power state to all widgets
2676  * @codec: the HDA codec
2677  * @fg: function group (not used now)
2678  * @power_state: the power state to set (AC_PWRST_*)
2679  *
2680  * Set the given power state to all widgets that have the power control.
2681  * If the codec has power_filter set, it evaluates the power state and
2682  * filter out if it's unchanged as D3.
2683  */
2684 void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg,
2685                                     unsigned int power_state)
2686 {
2687         hda_nid_t nid;
2688 
2689         for_each_hda_codec_node(nid, codec) {
2690                 unsigned int wcaps = get_wcaps(codec, nid);
2691                 unsigned int state = power_state;
2692                 if (!(wcaps & AC_WCAP_POWER))
2693                         continue;
2694                 if (codec->power_filter) {
2695                         state = codec->power_filter(codec, nid, power_state);
2696                         if (state != power_state && power_state == AC_PWRST_D3)
2697                                 continue;
2698                 }
2699                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_POWER_STATE,
2700                                     state);
2701         }
2702 }
2703 EXPORT_SYMBOL_GPL(snd_hda_codec_set_power_to_all);
2704 
2705 /*
2706  * wait until the state is reached, returns the current state
2707  */
2708 static unsigned int hda_sync_power_state(struct hda_codec *codec,
2709                                          hda_nid_t fg,
2710                                          unsigned int power_state)
2711 {
2712         unsigned long end_time = jiffies + msecs_to_jiffies(500);
2713         unsigned int state, actual_state;
2714 
2715         for (;;) {
2716                 state = snd_hda_codec_read(codec, fg, 0,
2717                                            AC_VERB_GET_POWER_STATE, 0);
2718                 if (state & AC_PWRST_ERROR)
2719                         break;
2720                 actual_state = (state >> 4) & 0x0f;
2721                 if (actual_state == power_state)
2722                         break;
2723                 if (time_after_eq(jiffies, end_time))
2724                         break;
2725                 /* wait until the codec reachs to the target state */
2726                 msleep(1);
2727         }
2728         return state;
2729 }
2730 
2731 /**
2732  * snd_hda_codec_eapd_power_filter - A power filter callback for EAPD
2733  * @codec: the HDA codec
2734  * @nid: widget NID
2735  * @power_state: power state to evalue
2736  *
2737  * Don't power down the widget if it controls eapd and EAPD_BTLENABLE is set.
2738  * This can be used a codec power_filter callback.
2739  */
2740 unsigned int snd_hda_codec_eapd_power_filter(struct hda_codec *codec,
2741                                              hda_nid_t nid,
2742                                              unsigned int power_state)
2743 {
2744         if (nid == codec->core.afg || nid == codec->core.mfg)
2745                 return power_state;
2746         if (power_state == AC_PWRST_D3 &&
2747             get_wcaps_type(get_wcaps(codec, nid)) == AC_WID_PIN &&
2748             (snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_EAPD)) {
2749                 int eapd = snd_hda_codec_read(codec, nid, 0,
2750                                               AC_VERB_GET_EAPD_BTLENABLE, 0);
2751                 if (eapd & 0x02)
2752                         return AC_PWRST_D0;
2753         }
2754         return power_state;
2755 }
2756 EXPORT_SYMBOL_GPL(snd_hda_codec_eapd_power_filter);
2757 
2758 /*
2759  * set power state of the codec, and return the power state
2760  */
2761 static unsigned int hda_set_power_state(struct hda_codec *codec,
2762                                         unsigned int power_state)
2763 {
2764         hda_nid_t fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
2765         int count;
2766         unsigned int state;
2767         int flags = 0;
2768 
2769         /* this delay seems necessary to avoid click noise at power-down */
2770         if (power_state == AC_PWRST_D3) {
2771                 if (codec->depop_delay < 0)
2772                         msleep(codec_has_epss(codec) ? 10 : 100);
2773                 else if (codec->depop_delay > 0)
2774                         msleep(codec->depop_delay);
2775                 flags = HDA_RW_NO_RESPONSE_FALLBACK;
2776         }
2777 
2778         /* repeat power states setting at most 10 times*/
2779         for (count = 0; count < 10; count++) {
2780                 if (codec->patch_ops.set_power_state)
2781                         codec->patch_ops.set_power_state(codec, fg,
2782                                                          power_state);
2783                 else {
2784                         state = power_state;
2785                         if (codec->power_filter)
2786                                 state = codec->power_filter(codec, fg, state);
2787                         if (state == power_state || power_state != AC_PWRST_D3)
2788                                 snd_hda_codec_read(codec, fg, flags,
2789                                                    AC_VERB_SET_POWER_STATE,
2790                                                    state);
2791                         snd_hda_codec_set_power_to_all(codec, fg, power_state);
2792                 }
2793                 state = hda_sync_power_state(codec, fg, power_state);
2794                 if (!(state & AC_PWRST_ERROR))
2795                         break;
2796         }
2797 
2798         return state;
2799 }
2800 
2801 /* sync power states of all widgets;
2802  * this is called at the end of codec parsing
2803  */
2804 static void sync_power_up_states(struct hda_codec *codec)
2805 {
2806         hda_nid_t nid;
2807 
2808         /* don't care if no filter is used */
2809         if (!codec->power_filter)
2810                 return;
2811 
2812         for_each_hda_codec_node(nid, codec) {
2813                 unsigned int wcaps = get_wcaps(codec, nid);
2814                 unsigned int target;
2815                 if (!(wcaps & AC_WCAP_POWER))
2816                         continue;
2817                 target = codec->power_filter(codec, nid, AC_PWRST_D0);
2818                 if (target == AC_PWRST_D0)
2819                         continue;
2820                 if (!snd_hda_check_power_state(codec, nid, target))
2821                         snd_hda_codec_write(codec, nid, 0,
2822                                             AC_VERB_SET_POWER_STATE, target);
2823         }
2824 }
2825 
2826 #ifdef CONFIG_SND_HDA_RECONFIG
2827 /* execute additional init verbs */
2828 static void hda_exec_init_verbs(struct hda_codec *codec)
2829 {
2830         if (codec->init_verbs.list)
2831                 snd_hda_sequence_write(codec, codec->init_verbs.list);
2832 }
2833 #else
2834 static inline void hda_exec_init_verbs(struct hda_codec *codec) {}
2835 #endif
2836 
2837 #ifdef CONFIG_PM
2838 /* update the power on/off account with the current jiffies */
2839 static void update_power_acct(struct hda_codec *codec, bool on)
2840 {
2841         unsigned long delta = jiffies - codec->power_jiffies;
2842 
2843         if (on)
2844                 codec->power_on_acct += delta;
2845         else
2846                 codec->power_off_acct += delta;
2847         codec->power_jiffies += delta;
2848 }
2849 
2850 void snd_hda_update_power_acct(struct hda_codec *codec)
2851 {
2852         update_power_acct(codec, hda_codec_is_power_on(codec));
2853 }
2854 
2855 /*
2856  * call suspend and power-down; used both from PM and power-save
2857  * this function returns the power state in the end
2858  */
2859 static unsigned int hda_call_codec_suspend(struct hda_codec *codec)
2860 {
2861         unsigned int state;
2862 
2863         atomic_inc(&codec->core.in_pm);
2864 
2865         if (codec->patch_ops.suspend)
2866                 codec->patch_ops.suspend(codec);
2867         hda_cleanup_all_streams(codec);
2868         state = hda_set_power_state(codec, AC_PWRST_D3);
2869         update_power_acct(codec, true);
2870         atomic_dec(&codec->core.in_pm);
2871         return state;
2872 }
2873 
2874 /*
2875  * kick up codec; used both from PM and power-save
2876  */
2877 static void hda_call_codec_resume(struct hda_codec *codec)
2878 {
2879         atomic_inc(&codec->core.in_pm);
2880 
2881         if (codec->core.regmap)
2882                 regcache_mark_dirty(codec->core.regmap);
2883 
2884         codec->power_jiffies = jiffies;
2885 
2886         hda_set_power_state(codec, AC_PWRST_D0);
2887         restore_shutup_pins(codec);
2888         hda_exec_init_verbs(codec);
2889         snd_hda_jack_set_dirty_all(codec);
2890         if (codec->patch_ops.resume)
2891                 codec->patch_ops.resume(codec);
2892         else {
2893                 if (codec->patch_ops.init)
2894                         codec->patch_ops.init(codec);
2895                 if (codec->core.regmap)
2896                         regcache_sync(codec->core.regmap);
2897         }
2898 
2899         if (codec->jackpoll_interval)
2900                 hda_jackpoll_work(&codec->jackpoll_work.work);
2901         else
2902                 snd_hda_jack_report_sync(codec);
2903         atomic_dec(&codec->core.in_pm);
2904 }
2905 
2906 static int hda_codec_runtime_suspend(struct device *dev)
2907 {
2908         struct hda_codec *codec = dev_to_hda_codec(dev);
2909         struct hda_pcm *pcm;
2910         unsigned int state;
2911 
2912         cancel_delayed_work_sync(&codec->jackpoll_work);
2913         list_for_each_entry(pcm, &codec->pcm_list_head, list)
2914                 snd_pcm_suspend_all(pcm->pcm);
2915         state = hda_call_codec_suspend(codec);
2916         if (codec_has_clkstop(codec) && codec_has_epss(codec) &&
2917             (state & AC_PWRST_CLK_STOP_OK))
2918                 snd_hdac_codec_link_down(&codec->core);
2919         snd_hdac_link_power(&codec->core, false);
2920         return 0;
2921 }
2922 
2923 static int hda_codec_runtime_resume(struct device *dev)
2924 {
2925         struct hda_codec *codec = dev_to_hda_codec(dev);
2926 
2927         snd_hdac_link_power(&codec->core, true);
2928         snd_hdac_codec_link_up(&codec->core);
2929         hda_call_codec_resume(codec);
2930         pm_runtime_mark_last_busy(dev);
2931         return 0;
2932 }
2933 #endif /* CONFIG_PM */
2934 
2935 /* referred in hda_bind.c */
2936 const struct dev_pm_ops hda_codec_driver_pm = {
2937         SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
2938                                 pm_runtime_force_resume)
2939         SET_RUNTIME_PM_OPS(hda_codec_runtime_suspend, hda_codec_runtime_resume,
2940                            NULL)
2941 };
2942 
2943 /*
2944  * add standard channel maps if not specified
2945  */
2946 static int add_std_chmaps(struct hda_codec *codec)
2947 {
2948         struct hda_pcm *pcm;
2949         int str, err;
2950 
2951         list_for_each_entry(pcm, &codec->pcm_list_head, list) {
2952                 for (str = 0; str < 2; str++) {
2953                         struct hda_pcm_stream *hinfo = &pcm->stream[str];
2954                         struct snd_pcm_chmap *chmap;
2955                         const struct snd_pcm_chmap_elem *elem;
2956 
2957                         if (!pcm->pcm || pcm->own_chmap || !hinfo->substreams)
2958                                 continue;
2959                         elem = hinfo->chmap ? hinfo->chmap : snd_pcm_std_chmaps;
2960                         err = snd_pcm_add_chmap_ctls(pcm->pcm, str, elem,
2961                                                      hinfo->channels_max,
2962                                                      0, &chmap);
2963                         if (err < 0)
2964                                 return err;
2965                         chmap->channel_mask = SND_PCM_CHMAP_MASK_2468;
2966                 }
2967         }
2968         return 0;
2969 }
2970 
2971 /* default channel maps for 2.1 speakers;
2972  * since HD-audio supports only stereo, odd number channels are omitted
2973  */
2974 const struct snd_pcm_chmap_elem snd_pcm_2_1_chmaps[] = {
2975         { .channels = 2,
2976           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
2977         { .channels = 4,
2978           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR,
2979                    SNDRV_CHMAP_LFE, SNDRV_CHMAP_LFE } },
2980         { }
2981 };
2982 EXPORT_SYMBOL_GPL(snd_pcm_2_1_chmaps);
2983 
2984 int snd_hda_codec_build_controls(struct hda_codec *codec)
2985 {
2986         int err = 0;
2987         hda_exec_init_verbs(codec);
2988         /* continue to initialize... */
2989         if (codec->patch_ops.init)
2990                 err = codec->patch_ops.init(codec);
2991         if (!err && codec->patch_ops.build_controls)
2992                 err = codec->patch_ops.build_controls(codec);
2993         if (err < 0)
2994                 return err;
2995 
2996         /* we create chmaps here instead of build_pcms */
2997         err = add_std_chmaps(codec);
2998         if (err < 0)
2999                 return err;
3000 
3001         if (codec->jackpoll_interval)
3002                 hda_jackpoll_work(&codec->jackpoll_work.work);
3003         else
3004                 snd_hda_jack_report_sync(codec); /* call at the last init point */
3005         sync_power_up_states(codec);
3006         return 0;
3007 }
3008 
3009 /*
3010  * PCM stuff
3011  */
3012 static int hda_pcm_default_open_close(struct hda_pcm_stream *hinfo,
3013                                       struct hda_codec *codec,
3014                                       struct snd_pcm_substream *substream)
3015 {
3016         return 0;
3017 }
3018 
3019 static int hda_pcm_default_prepare(struct hda_pcm_stream *hinfo,
3020                                    struct hda_codec *codec,
3021                                    unsigned int stream_tag,
3022                                    unsigned int format,
3023                                    struct snd_pcm_substream *substream)
3024 {
3025         snd_hda_codec_setup_stream(codec, hinfo->nid, stream_tag, 0, format);
3026         return 0;
3027 }
3028 
3029 static int hda_pcm_default_cleanup(struct hda_pcm_stream *hinfo,
3030                                    struct hda_codec *codec,
3031                                    struct snd_pcm_substream *substream)
3032 {
3033         snd_hda_codec_cleanup_stream(codec, hinfo->nid);
3034         return 0;
3035 }
3036 
3037 static int set_pcm_default_values(struct hda_codec *codec,
3038                                   struct hda_pcm_stream *info)
3039 {
3040         int err;
3041 
3042         /* query support PCM information from the given NID */
3043         if (info->nid && (!info->rates || !info->formats)) {
3044                 err = snd_hda_query_supported_pcm(codec, info->nid,
3045                                 info->rates ? NULL : &info->rates,
3046                                 info->formats ? NULL : &info->formats,
3047                                 info->maxbps ? NULL : &info->maxbps);
3048                 if (err < 0)
3049                         return err;
3050         }
3051         if (info->ops.open == NULL)
3052                 info->ops.open = hda_pcm_default_open_close;
3053         if (info->ops.close == NULL)
3054                 info->ops.close = hda_pcm_default_open_close;
3055         if (info->ops.prepare == NULL) {
3056                 if (snd_BUG_ON(!info->nid))
3057                         return -EINVAL;
3058                 info->ops.prepare = hda_pcm_default_prepare;
3059         }
3060         if (info->ops.cleanup == NULL) {
3061                 if (snd_BUG_ON(!info->nid))
3062                         return -EINVAL;
3063                 info->ops.cleanup = hda_pcm_default_cleanup;
3064         }
3065         return 0;
3066 }
3067 
3068 /*
3069  * codec prepare/cleanup entries
3070  */
3071 /**
3072  * snd_hda_codec_prepare - Prepare a stream
3073  * @codec: the HDA codec
3074  * @hinfo: PCM information
3075  * @stream: stream tag to assign
3076  * @format: format id to assign
3077  * @substream: PCM substream to assign
3078  *
3079  * Calls the prepare callback set by the codec with the given arguments.
3080  * Clean up the inactive streams when successful.
3081  */
3082 int snd_hda_codec_prepare(struct hda_codec *codec,
3083                           struct hda_pcm_stream *hinfo,
3084                           unsigned int stream,
3085                           unsigned int format,
3086                           struct snd_pcm_substream *substream)
3087 {
3088         int ret;
3089         mutex_lock(&codec->bus->prepare_mutex);
3090         if (hinfo->ops.prepare)
3091                 ret = hinfo->ops.prepare(hinfo, codec, stream, format,
3092                                          substream);
3093         else
3094                 ret = -ENODEV;
3095         if (ret >= 0)
3096                 purify_inactive_streams(codec);
3097         mutex_unlock(&codec->bus->prepare_mutex);
3098         return ret;
3099 }
3100 EXPORT_SYMBOL_GPL(snd_hda_codec_prepare);
3101 
3102 /**
3103  * snd_hda_codec_cleanup - Prepare a stream
3104  * @codec: the HDA codec
3105  * @hinfo: PCM information
3106  * @substream: PCM substream
3107  *
3108  * Calls the cleanup callback set by the codec with the given arguments.
3109  */
3110 void snd_hda_codec_cleanup(struct hda_codec *codec,
3111                            struct hda_pcm_stream *hinfo,
3112                            struct snd_pcm_substream *substream)
3113 {
3114         mutex_lock(&codec->bus->prepare_mutex);
3115         if (hinfo->ops.cleanup)
3116                 hinfo->ops.cleanup(hinfo, codec, substream);
3117         mutex_unlock(&codec->bus->prepare_mutex);
3118 }
3119 EXPORT_SYMBOL_GPL(snd_hda_codec_cleanup);
3120 
3121 /* global */
3122 const char *snd_hda_pcm_type_name[HDA_PCM_NTYPES] = {
3123         "Audio", "SPDIF", "HDMI", "Modem"
3124 };
3125 
3126 /*
3127  * get the empty PCM device number to assign
3128  */
3129 static int get_empty_pcm_device(struct hda_bus *bus, unsigned int type)
3130 {
3131         /* audio device indices; not linear to keep compatibility */
3132         /* assigned to static slots up to dev#10; if more needed, assign
3133          * the later slot dynamically (when CONFIG_SND_DYNAMIC_MINORS=y)
3134          */
3135         static int audio_idx[HDA_PCM_NTYPES][5] = {
3136                 [HDA_PCM_TYPE_AUDIO] = { 0, 2, 4, 5, -1 },
3137                 [HDA_PCM_TYPE_SPDIF] = { 1, -1 },
3138                 [HDA_PCM_TYPE_HDMI]  = { 3, 7, 8, 9, -1 },
3139                 [HDA_PCM_TYPE_MODEM] = { 6, -1 },
3140         };
3141         int i;
3142 
3143         if (type >= HDA_PCM_NTYPES) {
3144                 dev_err(bus->card->dev, "Invalid PCM type %d\n", type);
3145                 return -EINVAL;
3146         }
3147 
3148         for (i = 0; audio_idx[type][i] >= 0; i++) {
3149 #ifndef CONFIG_SND_DYNAMIC_MINORS
3150                 if (audio_idx[type][i] >= 8)
3151                         break;
3152 #endif
3153                 if (!test_and_set_bit(audio_idx[type][i], bus->pcm_dev_bits))
3154                         return audio_idx[type][i];
3155         }
3156 
3157 #ifdef CONFIG_SND_DYNAMIC_MINORS
3158         /* non-fixed slots starting from 10 */
3159         for (i = 10; i < 32; i++) {
3160                 if (!test_and_set_bit(i, bus->pcm_dev_bits))
3161                         return i;
3162         }
3163 #endif
3164 
3165         dev_warn(bus->card->dev, "Too many %s devices\n",
3166                 snd_hda_pcm_type_name[type]);
3167 #ifndef CONFIG_SND_DYNAMIC_MINORS
3168         dev_warn(bus->card->dev,
3169                  "Consider building the kernel with CONFIG_SND_DYNAMIC_MINORS=y\n");
3170 #endif
3171         return -EAGAIN;
3172 }
3173 
3174 /* call build_pcms ops of the given codec and set up the default parameters */
3175 int snd_hda_codec_parse_pcms(struct hda_codec *codec)
3176 {
3177         struct hda_pcm *cpcm;
3178         int err;
3179 
3180         if (!list_empty(&codec->pcm_list_head))
3181                 return 0; /* already parsed */
3182 
3183         if (!codec->patch_ops.build_pcms)
3184                 return 0;
3185 
3186         err = codec->patch_ops.build_pcms(codec);
3187         if (err < 0) {
3188                 codec_err(codec, "cannot build PCMs for #%d (error %d)\n",
3189                           codec->core.addr, err);
3190                 return err;
3191         }
3192 
3193         list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
3194                 int stream;
3195 
3196                 for (stream = 0; stream < 2; stream++) {
3197                         struct hda_pcm_stream *info = &cpcm->stream[stream];
3198 
3199                         if (!info->substreams)
3200                                 continue;
3201                         err = set_pcm_default_values(codec, info);
3202                         if (err < 0) {
3203                                 codec_warn(codec,
3204                                            "fail to setup default for PCM %s\n",
3205                                            cpcm->name);
3206                                 return err;
3207                         }
3208                 }
3209         }
3210 
3211         return 0;
3212 }
3213 
3214 /* assign all PCMs of the given codec */
3215 int snd_hda_codec_build_pcms(struct hda_codec *codec)
3216 {
3217         struct hda_bus *bus = codec->bus;
3218         struct hda_pcm *cpcm;
3219         int dev, err;
3220 
3221         err = snd_hda_codec_parse_pcms(codec);
3222         if (err < 0)
3223                 return err;
3224 
3225         /* attach a new PCM streams */
3226         list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
3227                 if (cpcm->pcm)
3228                         continue; /* already attached */
3229                 if (!cpcm->stream[0].substreams && !cpcm->stream[1].substreams)
3230                         continue; /* no substreams assigned */
3231 
3232                 dev = get_empty_pcm_device(bus, cpcm->pcm_type);
3233                 if (dev < 0) {
3234                         cpcm->device = SNDRV_PCM_INVALID_DEVICE;
3235                         continue; /* no fatal error */
3236                 }
3237                 cpcm->device = dev;
3238                 err =  snd_hda_attach_pcm_stream(bus, codec, cpcm);
3239                 if (err < 0) {
3240                         codec_err(codec,
3241                                   "cannot attach PCM stream %d for codec #%d\n",
3242                                   dev, codec->core.addr);
3243                         continue; /* no fatal error */
3244                 }
3245         }
3246 
3247         return 0;
3248 }
3249 
3250 /**
3251  * snd_hda_add_new_ctls - create controls from the array
3252  * @codec: the HDA codec
3253  * @knew: the array of struct snd_kcontrol_new
3254  *
3255  * This helper function creates and add new controls in the given array.
3256  * The array must be terminated with an empty entry as terminator.
3257  *
3258  * Returns 0 if successful, or a negative error code.
3259  */
3260 int snd_hda_add_new_ctls(struct hda_codec *codec,
3261                          const struct snd_kcontrol_new *knew)
3262 {
3263         int err;
3264 
3265         for (; knew->name; knew++) {
3266                 struct snd_kcontrol *kctl;
3267                 int addr = 0, idx = 0;
3268                 if (knew->iface == -1)  /* skip this codec private value */
3269                         continue;
3270                 for (;;) {
3271                         kctl = snd_ctl_new1(knew, codec);
3272                         if (!kctl)
3273                                 return -ENOMEM;
3274                         if (addr > 0)
3275                                 kctl->id.device = addr;
3276                         if (idx > 0)
3277                                 kctl->id.index = idx;
3278                         err = snd_hda_ctl_add(codec, 0, kctl);
3279                         if (!err)
3280                                 break;
3281                         /* try first with another device index corresponding to
3282                          * the codec addr; if it still fails (or it's the
3283                          * primary codec), then try another control index
3284                          */
3285                         if (!addr && codec->core.addr)
3286                                 addr = codec->core.addr;
3287                         else if (!idx && !knew->index) {
3288                                 idx = find_empty_mixer_ctl_idx(codec,
3289                                                                knew->name, 0);
3290                                 if (idx <= 0)
3291                                         return err;
3292                         } else
3293                                 return err;
3294                 }
3295         }
3296         return 0;
3297 }
3298 EXPORT_SYMBOL_GPL(snd_hda_add_new_ctls);
3299 
3300 #ifdef CONFIG_PM
3301 static void codec_set_power_save(struct hda_codec *codec, int delay)
3302 {
3303         struct device *dev = hda_codec_dev(codec);
3304 
3305         if (delay == 0 && codec->auto_runtime_pm)
3306                 delay = 3000;
3307 
3308         if (delay > 0) {
3309                 pm_runtime_set_autosuspend_delay(dev, delay);
3310                 pm_runtime_use_autosuspend(dev);
3311                 pm_runtime_allow(dev);
3312                 if (!pm_runtime_suspended(dev))
3313                         pm_runtime_mark_last_busy(dev);
3314         } else {
3315                 pm_runtime_dont_use_autosuspend(dev);
3316                 pm_runtime_forbid(dev);
3317         }
3318 }
3319 
3320 /**
3321  * snd_hda_set_power_save - reprogram autosuspend for the given delay
3322  * @bus: HD-audio bus
3323  * @delay: autosuspend delay in msec, 0 = off
3324  *
3325  * Synchronize the runtime PM autosuspend state from the power_save option.
3326  */
3327 void snd_hda_set_power_save(struct hda_bus *bus, int delay)
3328 {
3329         struct hda_codec *c;
3330 
3331         list_for_each_codec(c, bus)
3332                 codec_set_power_save(c, delay);
3333 }
3334 EXPORT_SYMBOL_GPL(snd_hda_set_power_save);
3335 
3336 /**
3337  * snd_hda_check_amp_list_power - Check the amp list and update the power
3338  * @codec: HD-audio codec
3339  * @check: the object containing an AMP list and the status
3340  * @nid: NID to check / update
3341  *
3342  * Check whether the given NID is in the amp list.  If it's in the list,
3343  * check the current AMP status, and update the the power-status according
3344  * to the mute status.
3345  *
3346  * This function is supposed to be set or called from the check_power_status
3347  * patch ops.
3348  */
3349 int snd_hda_check_amp_list_power(struct hda_codec *codec,
3350                                  struct hda_loopback_check *check,
3351                                  hda_nid_t nid)
3352 {
3353         const struct hda_amp_list *p;
3354         int ch, v;
3355 
3356         if (!check->amplist)
3357                 return 0;
3358         for (p = check->amplist; p->nid; p++) {
3359                 if (p->nid == nid)
3360                         break;
3361         }
3362         if (!p->nid)
3363                 return 0; /* nothing changed */
3364 
3365         for (p = check->amplist; p->nid; p++) {
3366                 for (ch = 0; ch < 2; ch++) {
3367                         v = snd_hda_codec_amp_read(codec, p->nid, ch, p->dir,
3368                                                    p->idx);
3369                         if (!(v & HDA_AMP_MUTE) && v > 0) {
3370                                 if (!check->power_on) {
3371                                         check->power_on = 1;
3372                                         snd_hda_power_up_pm(codec);
3373                                 }
3374                                 return 1;
3375                         }
3376                 }
3377         }
3378         if (check->power_on) {
3379                 check->power_on = 0;
3380                 snd_hda_power_down_pm(codec);
3381         }
3382         return 0;
3383 }
3384 EXPORT_SYMBOL_GPL(snd_hda_check_amp_list_power);
3385 #endif
3386 
3387 /*
3388  * input MUX helper
3389  */
3390 
3391 /**
3392  * snd_hda_input_mux_info_info - Info callback helper for the input-mux enum
3393  * @imux: imux helper object
3394  * @uinfo: pointer to get/store the data
3395  */
3396 int snd_hda_input_mux_info(const struct hda_input_mux *imux,
3397                            struct snd_ctl_elem_info *uinfo)
3398 {
3399         unsigned int index;
3400 
3401         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
3402         uinfo->count = 1;
3403         uinfo->value.enumerated.items = imux->num_items;
3404         if (!imux->num_items)
3405                 return 0;
3406         index = uinfo->value.enumerated.item;
3407         if (index >= imux->num_items)
3408                 index = imux->num_items - 1;
3409         strcpy(uinfo->value.enumerated.name, imux->items[index].label);
3410         return 0;
3411 }
3412 EXPORT_SYMBOL_GPL(snd_hda_input_mux_info);
3413 
3414 /**
3415  * snd_hda_input_mux_info_put - Put callback helper for the input-mux enum
3416  * @codec: the HDA codec
3417  * @imux: imux helper object
3418  * @ucontrol: pointer to get/store the data
3419  * @nid: input mux NID
3420  * @cur_val: pointer to get/store the current imux value
3421  */
3422 int snd_hda_input_mux_put(struct hda_codec *codec,
3423                           const struct hda_input_mux *imux,
3424                           struct snd_ctl_elem_value *ucontrol,
3425                           hda_nid_t nid,
3426                           unsigned int *cur_val)
3427 {
3428         unsigned int idx;
3429 
3430         if (!imux->num_items)
3431                 return 0;
3432         idx = ucontrol->value.enumerated.item[0];
3433         if (idx >= imux->num_items)
3434                 idx = imux->num_items - 1;
3435         if (*cur_val == idx)
3436                 return 0;
3437         snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_CONNECT_SEL,
3438                                   imux->items[idx].index);
3439         *cur_val = idx;
3440         return 1;
3441 }
3442 EXPORT_SYMBOL_GPL(snd_hda_input_mux_put);
3443 
3444 
3445 /**
3446  * snd_hda_enum_helper_info - Helper for simple enum ctls
3447  * @kcontrol: ctl element
3448  * @uinfo: pointer to get/store the data
3449  * @num_items: number of enum items
3450  * @texts: enum item string array
3451  *
3452  * process kcontrol info callback of a simple string enum array
3453  * when @num_items is 0 or @texts is NULL, assume a boolean enum array
3454  */
3455 int snd_hda_enum_helper_info(struct snd_kcontrol *kcontrol,
3456                              struct snd_ctl_elem_info *uinfo,
3457                              int num_items, const char * const *texts)
3458 {
3459         static const char * const texts_default[] = {
3460                 "Disabled", "Enabled"
3461         };
3462 
3463         if (!texts || !num_items) {
3464                 num_items = 2;
3465                 texts = texts_default;
3466         }
3467 
3468         return snd_ctl_enum_info(uinfo, 1, num_items, texts);
3469 }
3470 EXPORT_SYMBOL_GPL(snd_hda_enum_helper_info);
3471 
3472 /*
3473  * Multi-channel / digital-out PCM helper functions
3474  */
3475 
3476 /* setup SPDIF output stream */
3477 static void setup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid,
3478                                  unsigned int stream_tag, unsigned int format)
3479 {
3480         struct hda_spdif_out *spdif;
3481         unsigned int curr_fmt;
3482         bool reset;
3483 
3484         spdif = snd_hda_spdif_out_of_nid(codec, nid);
3485         /* Add sanity check to pass klockwork check.
3486          * This should never happen.
3487          */
3488         if (WARN_ON(spdif == NULL))
3489                 return;
3490 
3491         curr_fmt = snd_hda_codec_read(codec, nid, 0,
3492                                       AC_VERB_GET_STREAM_FORMAT, 0);
3493         reset = codec->spdif_status_reset &&
3494                 (spdif->ctls & AC_DIG1_ENABLE) &&
3495                 curr_fmt != format;
3496 
3497         /* turn off SPDIF if needed; otherwise the IEC958 bits won't be
3498            updated */
3499         if (reset)
3500                 set_dig_out_convert(codec, nid,
3501                                     spdif->ctls & ~AC_DIG1_ENABLE & 0xff,
3502                                     -1);
3503         snd_hda_codec_setup_stream(codec, nid, stream_tag, 0, format);
3504         if (codec->slave_dig_outs) {
3505                 const hda_nid_t *d;
3506                 for (d = codec->slave_dig_outs; *d; d++)
3507                         snd_hda_codec_setup_stream(codec, *d, stream_tag, 0,
3508                                                    format);
3509         }
3510         /* turn on again (if needed) */
3511         if (reset)
3512                 set_dig_out_convert(codec, nid,
3513                                     spdif->ctls & 0xff, -1);
3514 }
3515 
3516 static void cleanup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid)
3517 {
3518         snd_hda_codec_cleanup_stream(codec, nid);
3519         if (codec->slave_dig_outs) {
3520                 const hda_nid_t *d;
3521                 for (d = codec->slave_dig_outs; *d; d++)
3522                         snd_hda_codec_cleanup_stream(codec, *d);
3523         }
3524 }
3525 
3526 /**
3527  * snd_hda_multi_out_dig_open - open the digital out in the exclusive mode
3528  * @codec: the HDA codec
3529  * @mout: hda_multi_out object
3530  */
3531 int snd_hda_multi_out_dig_open(struct hda_codec *codec,
3532                                struct hda_multi_out *mout)
3533 {
3534         mutex_lock(&codec->spdif_mutex);
3535         if (mout->dig_out_used == HDA_DIG_ANALOG_DUP)
3536                 /* already opened as analog dup; reset it once */
3537                 cleanup_dig_out_stream(codec, mout->dig_out_nid);
3538         mout->dig_out_used = HDA_DIG_EXCLUSIVE;
3539         mutex_unlock(&codec->spdif_mutex);
3540         return 0;
3541 }
3542 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_open);
3543 
3544 /**
3545  * snd_hda_multi_out_dig_prepare - prepare the digital out stream
3546  * @codec: the HDA codec
3547  * @mout: hda_multi_out object
3548  * @stream_tag: stream tag to assign
3549  * @format: format id to assign
3550  * @substream: PCM substream to assign
3551  */
3552 int snd_hda_multi_out_dig_prepare(struct hda_codec *codec,
3553                                   struct hda_multi_out *mout,
3554                                   unsigned int stream_tag,
3555                                   unsigned int format,
3556                                   struct snd_pcm_substream *substream)
3557 {
3558         mutex_lock(&codec->spdif_mutex);
3559         setup_dig_out_stream(codec, mout->dig_out_nid, stream_tag, format);
3560         mutex_unlock(&codec->spdif_mutex);
3561         return 0;
3562 }
3563 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_prepare);
3564 
3565 /**
3566  * snd_hda_multi_out_dig_cleanup - clean-up the digital out stream
3567  * @codec: the HDA codec
3568  * @mout: hda_multi_out object
3569  */
3570 int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec,
3571                                   struct hda_multi_out *mout)
3572 {
3573         mutex_lock(&codec->spdif_mutex);
3574         cleanup_dig_out_stream(codec, mout->dig_out_nid);
3575         mutex_unlock(&codec->spdif_mutex);
3576         return 0;
3577 }
3578 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_cleanup);
3579 
3580 /**
3581  * snd_hda_multi_out_dig_close - release the digital out stream
3582  * @codec: the HDA codec
3583  * @mout: hda_multi_out object
3584  */
3585 int snd_hda_multi_out_dig_close(struct hda_codec *codec,
3586                                 struct hda_multi_out *mout)
3587 {
3588         mutex_lock(&codec->spdif_mutex);
3589         mout->dig_out_used = 0;
3590         mutex_unlock(&codec->spdif_mutex);
3591         return 0;
3592 }
3593 EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_close);
3594 
3595 /**
3596  * snd_hda_multi_out_analog_open - open analog outputs
3597  * @codec: the HDA codec
3598  * @mout: hda_multi_out object
3599  * @substream: PCM substream to assign
3600  * @hinfo: PCM information to assign
3601  *
3602  * Open analog outputs and set up the hw-constraints.
3603  * If the digital outputs can be opened as slave, open the digital
3604  * outputs, too.
3605  */
3606 int snd_hda_multi_out_analog_open(struct hda_codec *codec,
3607                                   struct hda_multi_out *mout,
3608                                   struct snd_pcm_substream *substream,
3609                                   struct hda_pcm_stream *hinfo)
3610 {
3611         struct snd_pcm_runtime *runtime = substream->runtime;
3612         runtime->hw.channels_max = mout->max_channels;
3613         if (mout->dig_out_nid) {
3614                 if (!mout->analog_rates) {
3615                         mout->analog_rates = hinfo->rates;
3616                         mout->analog_formats = hinfo->formats;
3617                         mout->analog_maxbps = hinfo->maxbps;
3618                 } else {
3619                         runtime->hw.rates = mout->analog_rates;
3620                         runtime->hw.formats = mout->analog_formats;
3621                         hinfo->maxbps = mout->analog_maxbps;
3622                 }
3623                 if (!mout->spdif_rates) {
3624                         snd_hda_query_supported_pcm(codec, mout->dig_out_nid,
3625                                                     &mout->spdif_rates,
3626                                                     &mout->spdif_formats,
3627                                                     &mout->spdif_maxbps);
3628                 }
3629                 mutex_lock(&codec->spdif_mutex);
3630                 if (mout->share_spdif) {
3631                         if ((runtime->hw.rates & mout->spdif_rates) &&
3632                             (runtime->hw.formats & mout->spdif_formats)) {
3633                                 runtime->hw.rates &= mout->spdif_rates;
3634                                 runtime->hw.formats &= mout->spdif_formats;
3635                                 if (mout->spdif_maxbps < hinfo->maxbps)
3636                                         hinfo->maxbps = mout->spdif_maxbps;
3637                         } else {
3638                                 mout->share_spdif = 0;
3639                                 /* FIXME: need notify? */
3640                         }
3641                 }
3642                 mutex_unlock(&codec->spdif_mutex);
3643         }
3644         return snd_pcm_hw_constraint_step(substream->runtime, 0,
3645                                           SNDRV_PCM_HW_PARAM_CHANNELS, 2);
3646 }
3647 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_open);
3648 
3649 /**
3650  * snd_hda_multi_out_analog_prepare - Preapre the analog outputs.
3651  * @codec: the HDA codec
3652  * @mout: hda_multi_out object
3653  * @stream_tag: stream tag to assign
3654  * @format: format id to assign
3655  * @substream: PCM substream to assign
3656  *
3657  * Set up the i/o for analog out.
3658  * When the digital out is available, copy the front out to digital out, too.
3659  */
3660 int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
3661                                      struct hda_multi_out *mout,
3662                                      unsigned int stream_tag,
3663                                      unsigned int format,
3664                                      struct snd_pcm_substream *substream)
3665 {
3666         const hda_nid_t *nids = mout->dac_nids;
3667         int chs = substream->runtime->channels;
3668         struct hda_spdif_out *spdif;
3669         int i;
3670 
3671         mutex_lock(&codec->spdif_mutex);
3672         spdif = snd_hda_spdif_out_of_nid(codec, mout->dig_out_nid);
3673         if (mout->dig_out_nid && mout->share_spdif &&
3674             mout->dig_out_used != HDA_DIG_EXCLUSIVE) {
3675                 if (chs == 2 && spdif != NULL &&
3676                     snd_hda_is_supported_format(codec, mout->dig_out_nid,
3677                                                 format) &&
3678                     !(spdif->status & IEC958_AES0_NONAUDIO)) {
3679                         mout->dig_out_used = HDA_DIG_ANALOG_DUP;
3680                         setup_dig_out_stream(codec, mout->dig_out_nid,
3681                                              stream_tag, format);
3682                 } else {
3683                         mout->dig_out_used = 0;
3684                         cleanup_dig_out_stream(codec, mout->dig_out_nid);
3685                 }
3686         }
3687         mutex_unlock(&codec->spdif_mutex);
3688 
3689         /* front */
3690         snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag,
3691                                    0, format);
3692         if (!mout->no_share_stream &&
3693             mout->hp_nid && mout->hp_nid != nids[HDA_FRONT])
3694                 /* headphone out will just decode front left/right (stereo) */
3695                 snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag,
3696                                            0, format);
3697         /* extra outputs copied from front */
3698         for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++)
3699                 if (!mout->no_share_stream && mout->hp_out_nid[i])
3700                         snd_hda_codec_setup_stream(codec,
3701                                                    mout->hp_out_nid[i],
3702                                                    stream_tag, 0, format);
3703 
3704         /* surrounds */
3705         for (i = 1; i < mout->num_dacs; i++) {
3706                 if (chs >= (i + 1) * 2) /* independent out */
3707                         snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
3708                                                    i * 2, format);
3709                 else if (!mout->no_share_stream) /* copy front */
3710                         snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
3711                                                    0, format);
3712         }
3713 
3714         /* extra surrounds */
3715         for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++) {
3716                 int ch = 0;
3717                 if (!mout->extra_out_nid[i])
3718                         break;
3719                 if (chs >= (i + 1) * 2)
3720                         ch = i * 2;
3721                 else if (!mout->no_share_stream)
3722                         break;
3723                 snd_hda_codec_setup_stream(codec, mout->extra_out_nid[i],
3724                                            stream_tag, ch, format);
3725         }
3726 
3727         return 0;
3728 }
3729 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_prepare);
3730 
3731 /**
3732  * snd_hda_multi_out_analog_cleanup - clean up the setting for analog out
3733  * @codec: the HDA codec
3734  * @mout: hda_multi_out object
3735  */
3736 int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
3737                                      struct hda_multi_out *mout)
3738 {
3739         const hda_nid_t *nids = mout->dac_nids;
3740         int i;
3741 
3742         for (i = 0; i < mout->num_dacs; i++)
3743                 snd_hda_codec_cleanup_stream(codec, nids[i]);
3744         if (mout->hp_nid)
3745                 snd_hda_codec_cleanup_stream(codec, mout->hp_nid);
3746         for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++)
3747                 if (mout->hp_out_nid[i])
3748                         snd_hda_codec_cleanup_stream(codec,
3749                                                      mout->hp_out_nid[i]);
3750         for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++)
3751                 if (mout->extra_out_nid[i])
3752                         snd_hda_codec_cleanup_stream(codec,
3753                                                      mout->extra_out_nid[i]);
3754         mutex_lock(&codec->spdif_mutex);
3755         if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) {
3756                 cleanup_dig_out_stream(codec, mout->dig_out_nid);
3757                 mout->dig_out_used = 0;
3758         }
3759         mutex_unlock(&codec->spdif_mutex);
3760         return 0;
3761 }
3762 EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_cleanup);
3763 
3764 /**
3765  * snd_hda_get_default_vref - Get the default (mic) VREF pin bits
3766  * @codec: the HDA codec
3767  * @pin: referred pin NID
3768  *
3769  * Guess the suitable VREF pin bits to be set as the pin-control value.
3770  * Note: the function doesn't set the AC_PINCTL_IN_EN bit.
3771  */
3772 unsigned int snd_hda_get_default_vref(struct hda_codec *codec, hda_nid_t pin)
3773 {
3774         unsigned int pincap;
3775         unsigned int oldval;
3776         oldval = snd_hda_codec_read(codec, pin, 0,
3777                                     AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
3778         pincap = snd_hda_query_pin_caps(codec, pin);
3779         pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
3780         /* Exception: if the default pin setup is vref50, we give it priority */
3781         if ((pincap & AC_PINCAP_VREF_80) && oldval != PIN_VREF50)
3782                 return AC_PINCTL_VREF_80;
3783         else if (pincap & AC_PINCAP_VREF_50)
3784                 return AC_PINCTL_VREF_50;
3785         else if (pincap & AC_PINCAP_VREF_100)
3786                 return AC_PINCTL_VREF_100;
3787         else if (pincap & AC_PINCAP_VREF_GRD)
3788                 return AC_PINCTL_VREF_GRD;
3789         return AC_PINCTL_VREF_HIZ;
3790 }
3791 EXPORT_SYMBOL_GPL(snd_hda_get_default_vref);
3792 
3793 /**
3794  * snd_hda_correct_pin_ctl - correct the pin ctl value for matching with the pin cap
3795  * @codec: the HDA codec
3796  * @pin: referred pin NID
3797  * @val: pin ctl value to audit
3798  */
3799 unsigned int snd_hda_correct_pin_ctl(struct hda_codec *codec,
3800                                      hda_nid_t pin, unsigned int val)
3801 {
3802         static unsigned int cap_lists[][2] = {
3803                 { AC_PINCTL_VREF_100, AC_PINCAP_VREF_100 },
3804                 { AC_PINCTL_VREF_80, AC_PINCAP_VREF_80 },
3805                 { AC_PINCTL_VREF_50, AC_PINCAP_VREF_50 },
3806                 { AC_PINCTL_VREF_GRD, AC_PINCAP_VREF_GRD },
3807         };
3808         unsigned int cap;
3809 
3810         if (!val)
3811                 return 0;
3812         cap = snd_hda_query_pin_caps(codec, pin);
3813         if (!cap)
3814                 return val; /* don't know what to do... */
3815 
3816         if (val & AC_PINCTL_OUT_EN) {
3817                 if (!(cap & AC_PINCAP_OUT))
3818                         val &= ~(AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN);
3819                 else if ((val & AC_PINCTL_HP_EN) && !(cap & AC_PINCAP_HP_DRV))
3820                         val &= ~AC_PINCTL_HP_EN;
3821         }
3822 
3823         if (val & AC_PINCTL_IN_EN) {
3824                 if (!(cap & AC_PINCAP_IN))
3825                         val &= ~(AC_PINCTL_IN_EN | AC_PINCTL_VREFEN);
3826                 else {
3827                         unsigned int vcap, vref;
3828                         int i;
3829                         vcap = (cap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
3830                         vref = val & AC_PINCTL_VREFEN;
3831                         for (i = 0; i < ARRAY_SIZE(cap_lists); i++) {
3832                                 if (vref == cap_lists[i][0] &&
3833                                     !(vcap & cap_lists[i][1])) {
3834                                         if (i == ARRAY_SIZE(cap_lists) - 1)
3835                                                 vref = AC_PINCTL_VREF_HIZ;
3836                                         else
3837                                                 vref = cap_lists[i + 1][0];
3838                                 }
3839                         }
3840                         val &= ~AC_PINCTL_VREFEN;
3841                         val |= vref;
3842                 }
3843         }
3844 
3845         return val;
3846 }
3847 EXPORT_SYMBOL_GPL(snd_hda_correct_pin_ctl);
3848 
3849 /**
3850  * _snd_hda_pin_ctl - Helper to set pin ctl value
3851  * @codec: the HDA codec
3852  * @pin: referred pin NID
3853  * @val: pin control value to set
3854  * @cached: access over codec pinctl cache or direct write
3855  *
3856  * This function is a helper to set a pin ctl value more safely.
3857  * It corrects the pin ctl value via snd_hda_correct_pin_ctl(), stores the
3858  * value in pin target array via snd_hda_codec_set_pin_target(), then
3859  * actually writes the value via either snd_hda_codec_update_cache() or
3860  * snd_hda_codec_write() depending on @cached flag.
3861  */
3862 int _snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin,
3863                          unsigned int val, bool cached)
3864 {
3865         val = snd_hda_correct_pin_ctl(codec, pin, val);
3866         snd_hda_codec_set_pin_target(codec, pin, val);
3867         if (cached)
3868                 return snd_hda_codec_update_cache(codec, pin, 0,
3869                                 AC_VERB_SET_PIN_WIDGET_CONTROL, val);
3870         else
3871                 return snd_hda_codec_write(codec, pin, 0,
3872                                            AC_VERB_SET_PIN_WIDGET_CONTROL, val);
3873 }
3874 EXPORT_SYMBOL_GPL(_snd_hda_set_pin_ctl);
3875 
3876 /**
3877  * snd_hda_add_imux_item - Add an item to input_mux
3878  * @codec: the HDA codec
3879  * @imux: imux helper object
3880  * @label: the name of imux item to assign
3881  * @index: index number of imux item to assign
3882  * @type_idx: pointer to store the resultant label index
3883  *
3884  * When the same label is used already in the existing items, the number
3885  * suffix is appended to the label.  This label index number is stored
3886  * to type_idx when non-NULL pointer is given.
3887  */
3888 int snd_hda_add_imux_item(struct hda_codec *codec,
3889                           struct hda_input_mux *imux, const char *label,
3890                           int index, int *type_idx)
3891 {
3892         int i, label_idx = 0;
3893         if (imux->num_items >= HDA_MAX_NUM_INPUTS) {
3894                 codec_err(codec, "hda_codec: Too many imux items!\n");
3895                 return -EINVAL;
3896         }
3897         for (i = 0; i < imux->num_items; i++) {
3898                 if (!strncmp(label, imux->items[i].label, strlen(label)))
3899                         label_idx++;
3900         }
3901         if (type_idx)
3902                 *type_idx = label_idx;
3903         if (label_idx > 0)
3904                 snprintf(imux->items[imux->num_items].label,
3905                          sizeof(imux->items[imux->num_items].label),
3906                          "%s %d", label, label_idx);
3907         else
3908                 strlcpy(imux->items[imux->num_items].label, label,
3909                         sizeof(imux->items[imux->num_items].label));
3910         imux->items[imux->num_items].index = index;
3911         imux->num_items++;
3912         return 0;
3913 }
3914 EXPORT_SYMBOL_GPL(snd_hda_add_imux_item);
3915 
3916 /**
3917  * snd_hda_bus_reset_codecs - Reset the bus
3918  * @bus: HD-audio bus
3919  */
3920 void snd_hda_bus_reset_codecs(struct hda_bus *bus)
3921 {
3922         struct hda_codec *codec;
3923 
3924         list_for_each_codec(codec, bus) {
3925                 /* FIXME: maybe a better way needed for forced reset */
3926                 cancel_delayed_work_sync(&codec->jackpoll_work);
3927 #ifdef CONFIG_PM
3928                 if (hda_codec_is_power_on(codec)) {
3929                         hda_call_codec_suspend(codec);
3930                         hda_call_codec_resume(codec);
3931                 }
3932 #endif
3933         }
3934 }
3935 
3936 /**
3937  * snd_print_pcm_bits - Print the supported PCM fmt bits to the string buffer
3938  * @pcm: PCM caps bits
3939  * @buf: the string buffer to write
3940  * @buflen: the max buffer length
3941  *
3942  * used by hda_proc.c and hda_eld.c
3943  */
3944 void snd_print_pcm_bits(int pcm, char *buf, int buflen)
3945 {
3946         static unsigned int bits[] = { 8, 16, 20, 24, 32 };
3947         int i, j;
3948 
3949         for (i = 0, j = 0; i < ARRAY_SIZE(bits); i++)
3950                 if (pcm & (AC_SUPPCM_BITS_8 << i))
3951                         j += snprintf(buf + j, buflen - j,  " %d", bits[i]);
3952 
3953         buf[j] = '\0'; /* necessary when j == 0 */
3954 }
3955 EXPORT_SYMBOL_GPL(snd_print_pcm_bits);
3956 
3957 MODULE_DESCRIPTION("HDA codec core");
3958 MODULE_LICENSE("GPL");
3959 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp