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Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
[linux-2.6-block.git] / sound / hda / hdac_device.c
CommitLineData
457c8996 1// SPDX-License-Identifier: GPL-2.0-only
7639a06c
TI		 2/*
3 * HD-audio codec core device
4 */
5
6#include <linux/init.h>
09787492 7#include <linux/delay.h>
7639a06c
TI		 8#include <linux/device.h>
9#include <linux/slab.h>
10#include <linux/module.h>
11#include <linux/export.h>
12#include <linux/pm_runtime.h>
13#include <sound/hdaudio.h>
01ed3c06 14#include <sound/hda_regmap.h>
b7d023e1 15#include <sound/pcm.h>
7639a06c
TI		 16#include "local.h"
17
18static void setup_fg_nodes(struct hdac_device *codec);
19static int get_codec_vendor_name(struct hdac_device *codec);
20
21static void default_release(struct device *dev)
22{
23 snd_hdac_device_exit(container_of(dev, struct hdac_device, dev));
24}
25
26/**
27 * snd_hdac_device_init - initialize the HD-audio codec base device
28 * @codec: device to initialize
29 * @bus: but to attach
30 * @name: device name string
31 * @addr: codec address
32 *
33 * Returns zero for success or a negative error code.
34 *
35 * This function increments the runtime PM counter and marks it active.
36 * The caller needs to turn it off appropriately later.
37 *
38 * The caller needs to set the device's release op properly by itself.
39 */
40int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus,
41 const char *name, unsigned int addr)
42{
43 struct device *dev;
44 hda_nid_t fg;
45 int err;
46
47 dev = &codec->dev;
48 device_initialize(dev);
49 dev->parent = bus->dev;
50 dev->bus = &snd_hda_bus_type;
51 dev->release = default_release;
3256be65 52 dev->groups = hdac_dev_attr_groups;
7639a06c
TI		 53 dev_set_name(dev, "%s", name);
54 device_enable_async_suspend(dev);
55
56 codec->bus = bus;
57 codec->addr = addr;
58 codec->type = HDA_DEV_CORE;
ed180abb 59 mutex_init(&codec->widget_lock);
7639a06c
TI		 60 pm_runtime_set_active(&codec->dev);
61 pm_runtime_get_noresume(&codec->dev);
62 atomic_set(&codec->in_pm, 0);
63
246bb4aa
TI		 64 err = snd_hdac_bus_add_device(bus, codec);
65 if (err < 0)
66 goto error;
67
7639a06c
TI		 68 /* fill parameters */
69 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
70 AC_PAR_VENDOR_ID);
71 if (codec->vendor_id == -1) {
72 /* read again, hopefully the access method was corrected
73 * in the last read...
74 */
75 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
76 AC_PAR_VENDOR_ID);
77 }
78
79 codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
80 AC_PAR_SUBSYSTEM_ID);
81 codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
82 AC_PAR_REV_ID);
83
84 setup_fg_nodes(codec);
85 if (!codec->afg && !codec->mfg) {
86 dev_err(dev, "no AFG or MFG node found\n");
87 err = -ENODEV;
88 goto error;
89 }
90
91 fg = codec->afg ? codec->afg : codec->mfg;
92
774a075a 93 err = snd_hdac_refresh_widgets(codec);
7639a06c
TI		 94 if (err < 0)
95 goto error;
96
97 codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE);
98 /* reread ssid if not set by parameter */
ffda568e 99 if (codec->subsystem_id == -1 || codec->subsystem_id == 0)
7639a06c
TI		 100 snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0,
101 &codec->subsystem_id);
102
103 err = get_codec_vendor_name(codec);
104 if (err < 0)
105 goto error;
106
107 codec->chip_name = kasprintf(GFP_KERNEL, "ID %x",
108 codec->vendor_id & 0xffff);
109 if (!codec->chip_name) {
110 err = -ENOMEM;
111 goto error;
112 }
113
114 return 0;
115
116 error:
7639a06c
TI		 117 put_device(&codec->dev);
118 return err;
119}
120EXPORT_SYMBOL_GPL(snd_hdac_device_init);
121
122/**
123 * snd_hdac_device_exit - clean up the HD-audio codec base device
124 * @codec: device to clean up
125 */
126void snd_hdac_device_exit(struct hdac_device *codec)
127{
c4c2533f 128 pm_runtime_put_noidle(&codec->dev);
7639a06c
TI		 129 snd_hdac_bus_remove_device(codec->bus, codec);
130 kfree(codec->vendor_name);
131 kfree(codec->chip_name);
132}
133EXPORT_SYMBOL_GPL(snd_hdac_device_exit);
134
3256be65
TI		 135/**
136 * snd_hdac_device_register - register the hd-audio codec base device
137 * codec: the device to register
138 */
139int snd_hdac_device_register(struct hdac_device *codec)
140{
141 int err;
142
143 err = device_add(&codec->dev);
144 if (err < 0)
145 return err;
ed180abb 146 mutex_lock(&codec->widget_lock);
3256be65 147 err = hda_widget_sysfs_init(codec);
ed180abb 148 mutex_unlock(&codec->widget_lock);
246bb4aa
TI		 149 if (err < 0) {
150 device_del(&codec->dev);
151 return err;
152 }
3256be65
TI		 153
154 return 0;
155}
156EXPORT_SYMBOL_GPL(snd_hdac_device_register);
157
158/**
159 * snd_hdac_device_unregister - unregister the hd-audio codec base device
160 * codec: the device to unregister
161 */
162void snd_hdac_device_unregister(struct hdac_device *codec)
163{
164 if (device_is_registered(&codec->dev)) {
ed180abb 165 mutex_lock(&codec->widget_lock);
3256be65 166 hda_widget_sysfs_exit(codec);
ed180abb 167 mutex_unlock(&codec->widget_lock);
ee5f85d9 168 device_del(&codec->dev);
246bb4aa 169 snd_hdac_bus_remove_device(codec->bus, codec);
3256be65
TI		 170 }
171}
172EXPORT_SYMBOL_GPL(snd_hdac_device_unregister);
173
ded255be
TI		 174/**
175 * snd_hdac_device_set_chip_name - set/update the codec name
176 * @codec: the HDAC device
177 * @name: name string to set
178 *
179 * Returns 0 if the name is set or updated, or a negative error code.
180 */
181int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name)
182{
183 char *newname;
184
185 if (!name)
186 return 0;
187 newname = kstrdup(name, GFP_KERNEL);
188 if (!newname)
189 return -ENOMEM;
190 kfree(codec->chip_name);
191 codec->chip_name = newname;
192 return 0;
193}
194EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name);
195
4f9e0c38
TI		 196/**
197 * snd_hdac_codec_modalias - give the module alias name
198 * @codec: HDAC device
199 * @buf: string buffer to store
200 * @size: string buffer size
201 *
202 * Returns the size of string, like snprintf(), or a negative error code.
203 */
204int snd_hdac_codec_modalias(struct hdac_device *codec, char *buf, size_t size)
205{
206 return snprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n",
207 codec->vendor_id, codec->revision_id, codec->type);
208}
209EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias);
210
7639a06c
TI		 211/**
212 * snd_hdac_make_cmd - compose a 32bit command word to be sent to the
213 * HD-audio controller
214 * @codec: the codec object
215 * @nid: NID to encode
216 * @verb: verb to encode
217 * @parm: parameter to encode
218 *
219 * Return an encoded command verb or -1 for error.
220 */
ddf7cb83
TI		 221static unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
222 unsigned int verb, unsigned int parm)
7639a06c
TI		 223{
224 u32 val, addr;
225
226 addr = codec->addr;
227 if ((addr & ~0xf) || (nid & ~0x7f) ||
228 (verb & ~0xfff) || (parm & ~0xffff)) {
229 dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n",
230 addr, nid, verb, parm);
231 return -1;
232 }
233
234 val = addr << 28;
235 val |= (u32)nid << 20;
236 val |= verb << 8;
237 val |= parm;
238 return val;
239}
7639a06c 240
05852448
TI		 241/**
242 * snd_hdac_exec_verb - execute an encoded verb
243 * @codec: the codec object
244 * @cmd: encoded verb to execute
245 * @flags: optional flags, pass zero for default
246 * @res: the pointer to store the result, NULL if running async
247 *
248 * Returns zero if successful, or a negative error code.
249 *
250 * This calls the exec_verb op when set in hdac_codec. If not,
251 * call the default snd_hdac_bus_exec_verb().
252 */
253int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
254 unsigned int flags, unsigned int *res)
255{
256 if (codec->exec_verb)
257 return codec->exec_verb(codec, cmd, flags, res);
258 return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res);
259}
05852448
TI		 260
261
7639a06c
TI		 262/**
263 * snd_hdac_read - execute a verb
264 * @codec: the codec object
265 * @nid: NID to execute a verb
266 * @verb: verb to execute
267 * @parm: parameter for a verb
268 * @res: the pointer to store the result, NULL if running async
269 *
270 * Returns zero if successful, or a negative error code.
271 */
272int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
273 unsigned int verb, unsigned int parm, unsigned int *res)
274{
275 unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm);
276
05852448 277 return snd_hdac_exec_verb(codec, cmd, 0, res);
7639a06c
TI		 278}
279EXPORT_SYMBOL_GPL(snd_hdac_read);
280
281/**
01ed3c06 282 * _snd_hdac_read_parm - read a parmeter
7639a06c 283 *
01ed3c06 284 * This function returns zero or an error unlike snd_hdac_read_parm().
7639a06c 285 */
01ed3c06
TI		 286int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
287 unsigned int *res)
7639a06c 288{
01ed3c06 289 unsigned int cmd;
7639a06c 290
01ed3c06
TI		 291 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
292 return snd_hdac_regmap_read_raw(codec, cmd, res);
7639a06c 293}
01ed3c06 294EXPORT_SYMBOL_GPL(_snd_hdac_read_parm);
7639a06c 295
9ba17b4d
TI		 296/**
297 * snd_hdac_read_parm_uncached - read a codec parameter without caching
7639a06c
TI		 298 * @codec: the codec object
299 * @nid: NID to read a parameter
300 * @parm: parameter to read
301 *
302 * Returns -1 for error. If you need to distinguish the error more
303 * strictly, use snd_hdac_read() directly.
304 */
9ba17b4d
TI		 305int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
306 int parm)
7639a06c 307{
3194ed49 308 unsigned int cmd, val;
7639a06c 309
3194ed49
TI		 310 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
311 if (snd_hdac_regmap_read_raw_uncached(codec, cmd, &val) < 0)
312 return -1;
7639a06c
TI		 313 return val;
314}
9ba17b4d
TI		 315EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached);
316
faa75f8a
TI		 317/**
318 * snd_hdac_override_parm - override read-only parameters
319 * @codec: the codec object
320 * @nid: NID for the parameter
321 * @parm: the parameter to change
322 * @val: the parameter value to overwrite
323 */
324int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
325 unsigned int parm, unsigned int val)
326{
327 unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm;
328 int err;
329
330 if (!codec->regmap)
331 return -EINVAL;
332
333 codec->caps_overwriting = true;
334 err = snd_hdac_regmap_write_raw(codec, verb, val);
335 codec->caps_overwriting = false;
336 return err;
337}
338EXPORT_SYMBOL_GPL(snd_hdac_override_parm);
7639a06c
TI		 339
340/**
341 * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes
342 * @codec: the codec object
343 * @nid: NID to inspect
344 * @start_id: the pointer to store the starting NID
345 *
346 * Returns the number of subtree nodes or zero if not found.
9ba17b4d 347 * This function reads parameters always without caching.
7639a06c
TI		 348 */
349int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
350 hda_nid_t *start_id)
351{
352 unsigned int parm;
353
9ba17b4d 354 parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT);
7639a06c
TI		 355 if (parm == -1) {
356 *start_id = 0;
357 return 0;
358 }
359 *start_id = (parm >> 16) & 0x7fff;
360 return (int)(parm & 0x7fff);
361}
362EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes);
363
364/*
365 * look for an AFG and MFG nodes
366 */
367static void setup_fg_nodes(struct hdac_device *codec)
368{
369 int i, total_nodes, function_id;
370 hda_nid_t nid;
371
372 total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
373 for (i = 0; i < total_nodes; i++, nid++) {
374 function_id = snd_hdac_read_parm(codec, nid,
375 AC_PAR_FUNCTION_TYPE);
376 switch (function_id & 0xff) {
377 case AC_GRP_AUDIO_FUNCTION:
378 codec->afg = nid;
379 codec->afg_function_id = function_id & 0xff;
380 codec->afg_unsol = (function_id >> 8) & 1;
381 break;
382 case AC_GRP_MODEM_FUNCTION:
383 codec->mfg = nid;
384 codec->mfg_function_id = function_id & 0xff;
385 codec->mfg_unsol = (function_id >> 8) & 1;
386 break;
387 default:
388 break;
389 }
390 }
391}
392
393/**
394 * snd_hdac_refresh_widgets - Reset the widget start/end nodes
395 * @codec: the codec object
396 */
774a075a 397int snd_hdac_refresh_widgets(struct hdac_device *codec)
7639a06c
TI		 398{
399 hda_nid_t start_nid;
98482377 400 int nums, err = 0;
7639a06c 401
98482377
EG		 402 /*
403 * Serialize against multiple threads trying to update the sysfs
404 * widgets array.
405 */
406 mutex_lock(&codec->widget_lock);
7639a06c
TI		 407 nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid);
408 if (!start_nid || nums <= 0 || nums >= 0xff) {
409 dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n",
410 codec->afg);
98482377
EG		 411 err = -EINVAL;
412 goto unlock;
7639a06c
TI		 413 }
414
774a075a
TI		 415 err = hda_widget_sysfs_reinit(codec, start_nid, nums);
416 if (err < 0)
417 goto unlock;
9780ded3 418
7639a06c
TI		 419 codec->num_nodes = nums;
420 codec->start_nid = start_nid;
421 codec->end_nid = start_nid + nums;
98482377
EG		 422unlock:
423 mutex_unlock(&codec->widget_lock);
424 return err;
7639a06c
TI		 425}
426EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets);
427
428/* return CONNLIST_LEN parameter of the given widget */
429static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid)
430{
431 unsigned int wcaps = get_wcaps(codec, nid);
432 unsigned int parm;
433
434 if (!(wcaps & AC_WCAP_CONN_LIST) &&
435 get_wcaps_type(wcaps) != AC_WID_VOL_KNB)
436 return 0;
437
438 parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN);
439 if (parm == -1)
440 parm = 0;
441 return parm;
442}
443
444/**
445 * snd_hdac_get_connections - get a widget connection list
446 * @codec: the codec object
447 * @nid: NID
448 * @conn_list: the array to store the results, can be NULL
449 * @max_conns: the max size of the given array
450 *
451 * Returns the number of connected widgets, zero for no connection, or a
452 * negative error code. When the number of elements don't fit with the
453 * given array size, it returns -ENOSPC.
454 *
455 * When @conn_list is NULL, it just checks the number of connections.
456 */
457int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
458 hda_nid_t *conn_list, int max_conns)
459{
460 unsigned int parm;
461 int i, conn_len, conns, err;
462 unsigned int shift, num_elems, mask;
463 hda_nid_t prev_nid;
464 int null_count = 0;
465
466 parm = get_num_conns(codec, nid);
467 if (!parm)
468 return 0;
469
470 if (parm & AC_CLIST_LONG) {
471 /* long form */
472 shift = 16;
473 num_elems = 2;
474 } else {
475 /* short form */
476 shift = 8;
477 num_elems = 4;
478 }
479 conn_len = parm & AC_CLIST_LENGTH;
480 mask = (1 << (shift-1)) - 1;
481
482 if (!conn_len)
483 return 0; /* no connection */
484
485 if (conn_len == 1) {
486 /* single connection */
487 err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0,
488 &parm);
489 if (err < 0)
490 return err;
491 if (conn_list)
492 conn_list[0] = parm & mask;
493 return 1;
494 }
495
496 /* multi connection */
497 conns = 0;
498 prev_nid = 0;
499 for (i = 0; i < conn_len; i++) {
500 int range_val;
501 hda_nid_t val, n;
502
503 if (i % num_elems == 0) {
504 err = snd_hdac_read(codec, nid,
505 AC_VERB_GET_CONNECT_LIST, i,
506 &parm);
507 if (err < 0)
508 return -EIO;
509 }
510 range_val = !!(parm & (1 << (shift-1))); /* ranges */
511 val = parm & mask;
512 if (val == 0 && null_count++) { /* no second chance */
513 dev_dbg(&codec->dev,
514 "invalid CONNECT_LIST verb %x[%i]:%x\n",
515 nid, i, parm);
516 return 0;
517 }
518 parm >>= shift;
519 if (range_val) {
520 /* ranges between the previous and this one */
521 if (!prev_nid || prev_nid >= val) {
522 dev_warn(&codec->dev,
523 "invalid dep_range_val %x:%x\n",
524 prev_nid, val);
525 continue;
526 }
527 for (n = prev_nid + 1; n <= val; n++) {
528 if (conn_list) {
529 if (conns >= max_conns)
530 return -ENOSPC;
531 conn_list[conns] = n;
532 }
533 conns++;
534 }
535 } else {
536 if (conn_list) {
537 if (conns >= max_conns)
538 return -ENOSPC;
539 conn_list[conns] = val;
540 }
541 conns++;
542 }
543 prev_nid = val;
544 }
545 return conns;
546}
547EXPORT_SYMBOL_GPL(snd_hdac_get_connections);
548
549#ifdef CONFIG_PM
550/**
664c7155 551 * snd_hdac_power_up - power up the codec
7639a06c 552 * @codec: the codec object
664c7155
TI		 553 *
554 * This function calls the runtime PM helper to power up the given codec.
555 * Unlike snd_hdac_power_up_pm(), you should call this only for the code
556 * path that isn't included in PM path. Otherwise it gets stuck.
fbce23a0
TI		 557 *
558 * Returns zero if successful, or a negative error code.
7639a06c 559 */
fbce23a0 560int snd_hdac_power_up(struct hdac_device *codec)
7639a06c 561{
fbce23a0 562 return pm_runtime_get_sync(&codec->dev);
7639a06c
TI		 563}
564EXPORT_SYMBOL_GPL(snd_hdac_power_up);
565
566/**
664c7155 567 * snd_hdac_power_down - power down the codec
7639a06c 568 * @codec: the codec object
fbce23a0
TI		 569 *
570 * Returns zero if successful, or a negative error code.
7639a06c 571 */
fbce23a0 572int snd_hdac_power_down(struct hdac_device *codec)
7639a06c
TI		 573{
574 struct device *dev = &codec->dev;
575
7639a06c 576 pm_runtime_mark_last_busy(dev);
fbce23a0 577 return pm_runtime_put_autosuspend(dev);
7639a06c
TI		 578}
579EXPORT_SYMBOL_GPL(snd_hdac_power_down);
c3aeda62
TI		 580
581/**
582 * snd_hdac_power_up_pm - power up the codec
583 * @codec: the codec object
584 *
585 * This function can be called in a recursive code path like init code
586 * which may be called by PM suspend/resume again. OTOH, if a power-up
587 * call must wake up the sleeper (e.g. in a kctl callback), use
588 * snd_hdac_power_up() instead.
fbce23a0
TI		 589 *
590 * Returns zero if successful, or a negative error code.
c3aeda62 591 */
fbce23a0 592int snd_hdac_power_up_pm(struct hdac_device *codec)
c3aeda62
TI		 593{
594 if (!atomic_inc_not_zero(&codec->in_pm))
fbce23a0
TI		 595 return snd_hdac_power_up(codec);
596 return 0;
c3aeda62
TI		 597}
598EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm);
599
fc4f000b
TI		 600/* like snd_hdac_power_up_pm(), but only increment the pm count when
601 * already powered up. Returns -1 if not powered up, 1 if incremented
602 * or 0 if unchanged. Only used in hdac_regmap.c
603 */
604int snd_hdac_keep_power_up(struct hdac_device *codec)
605{
606 if (!atomic_inc_not_zero(&codec->in_pm)) {
607 int ret = pm_runtime_get_if_in_use(&codec->dev);
608 if (!ret)
609 return -1;
610 if (ret < 0)
611 return 0;
612 }
613 return 1;
614}
615
c3aeda62
TI		 616/**
617 * snd_hdac_power_down_pm - power down the codec
618 * @codec: the codec object
619 *
620 * Like snd_hdac_power_up_pm(), this function is used in a recursive
621 * code path like init code which may be called by PM suspend/resume again.
fbce23a0
TI		 622 *
623 * Returns zero if successful, or a negative error code.
c3aeda62 624 */
fbce23a0 625int snd_hdac_power_down_pm(struct hdac_device *codec)
c3aeda62
TI		 626{
627 if (atomic_dec_if_positive(&codec->in_pm) < 0)
fbce23a0
TI		 628 return snd_hdac_power_down(codec);
629 return 0;
c3aeda62
TI		 630}
631EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm);
7639a06c
TI		 632#endif
633
634/* codec vendor labels */
635struct hda_vendor_id {
636 unsigned int id;
637 const char *name;
638};
639
640static struct hda_vendor_id hda_vendor_ids[] = {
641 { 0x1002, "ATI" },
642 { 0x1013, "Cirrus Logic" },
643 { 0x1057, "Motorola" },
644 { 0x1095, "Silicon Image" },
645 { 0x10de, "Nvidia" },
646 { 0x10ec, "Realtek" },
647 { 0x1102, "Creative" },
648 { 0x1106, "VIA" },
649 { 0x111d, "IDT" },
650 { 0x11c1, "LSI" },
651 { 0x11d4, "Analog Devices" },
652 { 0x13f6, "C-Media" },
653 { 0x14f1, "Conexant" },
654 { 0x17e8, "Chrontel" },
655 { 0x1854, "LG" },
656 { 0x1aec, "Wolfson Microelectronics" },
657 { 0x1af4, "QEMU" },
658 { 0x434d, "C-Media" },
659 { 0x8086, "Intel" },
660 { 0x8384, "SigmaTel" },
661 {} /* terminator */
662};
663
664/* store the codec vendor name */
665static int get_codec_vendor_name(struct hdac_device *codec)
666{
667 const struct hda_vendor_id *c;
668 u16 vendor_id = codec->vendor_id >> 16;
669
670 for (c = hda_vendor_ids; c->id; c++) {
671 if (c->id == vendor_id) {
672 codec->vendor_name = kstrdup(c->name, GFP_KERNEL);
673 return codec->vendor_name ? 0 : -ENOMEM;
674 }
675 }
676
677 codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id);
678 return codec->vendor_name ? 0 : -ENOMEM;
679}
b7d023e1
TI		 680
681/*
682 * stream formats
683 */
684struct hda_rate_tbl {
685 unsigned int hz;
686 unsigned int alsa_bits;
687 unsigned int hda_fmt;
688};
689
690/* rate = base * mult / div */
691#define HDA_RATE(base, mult, div) \
692 (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \
693 (((div) - 1) << AC_FMT_DIV_SHIFT))
694
695static struct hda_rate_tbl rate_bits[] = {
696 /* rate in Hz, ALSA rate bitmask, HDA format value */
697
698 /* autodetected value used in snd_hda_query_supported_pcm */
699 { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) },
700 { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) },
701 { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) },
702 { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) },
703 { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) },
704 { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) },
705 { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) },
706 { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) },
707 { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) },
708 { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) },
709 { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) },
710#define AC_PAR_PCM_RATE_BITS 11
711 /* up to bits 10, 384kHZ isn't supported properly */
712
713 /* not autodetected value */
714 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) },
715
716 { 0 } /* terminator */
717};
718
719/**
720 * snd_hdac_calc_stream_format - calculate the format bitset
721 * @rate: the sample rate
722 * @channels: the number of channels
723 * @format: the PCM format (SNDRV_PCM_FORMAT_XXX)
724 * @maxbps: the max. bps
725 * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant)
726 *
727 * Calculate the format bitset from the given rate, channels and th PCM format.
728 *
729 * Return zero if invalid.
730 */
731unsigned int snd_hdac_calc_stream_format(unsigned int rate,
732 unsigned int channels,
a6ea5fe9 733 snd_pcm_format_t format,
b7d023e1
TI		 734 unsigned int maxbps,
735 unsigned short spdif_ctls)
736{
737 int i;
738 unsigned int val = 0;
739
740 for (i = 0; rate_bits[i].hz; i++)
741 if (rate_bits[i].hz == rate) {
742 val = rate_bits[i].hda_fmt;
743 break;
744 }
745 if (!rate_bits[i].hz)
746 return 0;
747
748 if (channels == 0 || channels > 8)
749 return 0;
750 val |= channels - 1;
751
752 switch (snd_pcm_format_width(format)) {
753 case 8:
754 val |= AC_FMT_BITS_8;
755 break;
756 case 16:
757 val |= AC_FMT_BITS_16;
758 break;
759 case 20:
760 case 24:
761 case 32:
762 if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE)
763 val |= AC_FMT_BITS_32;
764 else if (maxbps >= 24)
765 val |= AC_FMT_BITS_24;
766 else
767 val |= AC_FMT_BITS_20;
768 break;
769 default:
770 return 0;
771 }
772
773 if (spdif_ctls & AC_DIG1_NONAUDIO)
774 val |= AC_FMT_TYPE_NON_PCM;
775
776 return val;
777}
778EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format);
779
780static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid)
781{
782 unsigned int val = 0;
783
784 if (nid != codec->afg &&
785 (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD))
786 val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM);
787 if (!val || val == -1)
788 val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM);
789 if (!val || val == -1)
790 return 0;
791 return val;
792}
793
794static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid)
795{
796 unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM);
797
798 if (!streams || streams == -1)
799 streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM);
800 if (!streams || streams == -1)
801 return 0;
802 return streams;
803}
804
805/**
806 * snd_hdac_query_supported_pcm - query the supported PCM rates and formats
807 * @codec: the codec object
808 * @nid: NID to query
809 * @ratesp: the pointer to store the detected rate bitflags
810 * @formatsp: the pointer to store the detected formats
811 * @bpsp: the pointer to store the detected format widths
812 *
813 * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp
814 * or @bsps argument is ignored.
815 *
816 * Returns 0 if successful, otherwise a negative error code.
817 */
818int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
819 u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
820{
821 unsigned int i, val, wcaps;
822
823 wcaps = get_wcaps(codec, nid);
824 val = query_pcm_param(codec, nid);
825
826 if (ratesp) {
827 u32 rates = 0;
828 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) {
829 if (val & (1 << i))
830 rates |= rate_bits[i].alsa_bits;
831 }
832 if (rates == 0) {
833 dev_err(&codec->dev,
834 "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n",
835 nid, val,
836 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0);
837 return -EIO;
838 }
839 *ratesp = rates;
840 }
841
842 if (formatsp || bpsp) {
843 u64 formats = 0;
844 unsigned int streams, bps;
845
846 streams = query_stream_param(codec, nid);
847 if (!streams)
848 return -EIO;
849
850 bps = 0;
851 if (streams & AC_SUPFMT_PCM) {
852 if (val & AC_SUPPCM_BITS_8) {
853 formats |= SNDRV_PCM_FMTBIT_U8;
854 bps = 8;
855 }
856 if (val & AC_SUPPCM_BITS_16) {
857 formats |= SNDRV_PCM_FMTBIT_S16_LE;
858 bps = 16;
859 }
860 if (wcaps & AC_WCAP_DIGITAL) {
861 if (val & AC_SUPPCM_BITS_32)
862 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
863 if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
864 formats |= SNDRV_PCM_FMTBIT_S32_LE;
865 if (val & AC_SUPPCM_BITS_24)
866 bps = 24;
867 else if (val & AC_SUPPCM_BITS_20)
868 bps = 20;
869 } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|
870 AC_SUPPCM_BITS_32)) {
871 formats |= SNDRV_PCM_FMTBIT_S32_LE;
872 if (val & AC_SUPPCM_BITS_32)
873 bps = 32;
874 else if (val & AC_SUPPCM_BITS_24)
875 bps = 24;
876 else if (val & AC_SUPPCM_BITS_20)
877 bps = 20;
878 }
879 }
880#if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */
881 if (streams & AC_SUPFMT_FLOAT32) {
882 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
883 if (!bps)
884 bps = 32;
885 }
886#endif
887 if (streams == AC_SUPFMT_AC3) {
888 /* should be exclusive */
889 /* temporary hack: we have still no proper support
890 * for the direct AC3 stream...
891 */
892 formats |= SNDRV_PCM_FMTBIT_U8;
893 bps = 8;
894 }
895 if (formats == 0) {
896 dev_err(&codec->dev,
897 "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n",
898 nid, val,
899 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0,
900 streams);
901 return -EIO;
902 }
903 if (formatsp)
904 *formatsp = formats;
905 if (bpsp)
906 *bpsp = bps;
907 }
908
909 return 0;
910}
911EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm);
912
913/**
914 * snd_hdac_is_supported_format - Check the validity of the format
915 * @codec: the codec object
916 * @nid: NID to check
917 * @format: the HD-audio format value to check
918 *
919 * Check whether the given node supports the format value.
920 *
921 * Returns true if supported, false if not.
922 */
923bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
924 unsigned int format)
925{
926 int i;
927 unsigned int val = 0, rate, stream;
928
929 val = query_pcm_param(codec, nid);
930 if (!val)
931 return false;
932
933 rate = format & 0xff00;
934 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++)
935 if (rate_bits[i].hda_fmt == rate) {
936 if (val & (1 << i))
937 break;
938 return false;
939 }
940 if (i >= AC_PAR_PCM_RATE_BITS)
941 return false;
942
943 stream = query_stream_param(codec, nid);
944 if (!stream)
945 return false;
946
947 if (stream & AC_SUPFMT_PCM) {
948 switch (format & 0xf0) {
949 case 0x00:
950 if (!(val & AC_SUPPCM_BITS_8))
951 return false;
952 break;
953 case 0x10:
954 if (!(val & AC_SUPPCM_BITS_16))
955 return false;
956 break;
957 case 0x20:
958 if (!(val & AC_SUPPCM_BITS_20))
959 return false;
960 break;
961 case 0x30:
962 if (!(val & AC_SUPPCM_BITS_24))
963 return false;
964 break;
965 case 0x40:
966 if (!(val & AC_SUPPCM_BITS_32))
967 return false;
968 break;
969 default:
970 return false;
971 }
972 } else {
973 /* FIXME: check for float32 and AC3? */
974 }
975
976 return true;
977}
978EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format);
1b5e6167
SP		 979
980static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid,
981 int flags, unsigned int verb, unsigned int parm)
982{
983 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
984 unsigned int res;
985
986 if (snd_hdac_exec_verb(hdac, cmd, flags, &res))
987 return -1;
988
989 return res;
990}
991
992static int codec_write(struct hdac_device *hdac, hda_nid_t nid,
993 int flags, unsigned int verb, unsigned int parm)
994{
995 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
996
997 return snd_hdac_exec_verb(hdac, cmd, flags, NULL);
998}
999
1000/**
1001 * snd_hdac_codec_read - send a command and get the response
1002 * @hdac: the HDAC device
1003 * @nid: NID to send the command
1004 * @flags: optional bit flags
1005 * @verb: the verb to send
1006 * @parm: the parameter for the verb
1007 *
1008 * Send a single command and read the corresponding response.
1009 *
1010 * Returns the obtained response value, or -1 for an error.
1011 */
1012int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
1013 int flags, unsigned int verb, unsigned int parm)
1014{
1015 return codec_read(hdac, nid, flags, verb, parm);
1016}
1017EXPORT_SYMBOL_GPL(snd_hdac_codec_read);
1018
1019/**
1020 * snd_hdac_codec_write - send a single command without waiting for response
1021 * @hdac: the HDAC device
1022 * @nid: NID to send the command
1023 * @flags: optional bit flags
1024 * @verb: the verb to send
1025 * @parm: the parameter for the verb
1026 *
1027 * Send a single command without waiting for response.
1028 *
1029 * Returns 0 if successful, or a negative error code.
1030 */
1031int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
1032 int flags, unsigned int verb, unsigned int parm)
1033{
1034 return codec_write(hdac, nid, flags, verb, parm);
1035}
1036EXPORT_SYMBOL_GPL(snd_hdac_codec_write);
1037
78dd5e21
TI		 1038/**
1039 * snd_hdac_check_power_state - check whether the actual power state matches
1b5e6167
SP		 1040 * with the target state
1041 *
1042 * @hdac: the HDAC device
1043 * @nid: NID to send the command
1044 * @target_state: target state to check for
1045 *
1046 * Return true if state matches, false if not
1047 */
1048bool snd_hdac_check_power_state(struct hdac_device *hdac,
1049 hda_nid_t nid, unsigned int target_state)
1050{
1051 unsigned int state = codec_read(hdac, nid, 0,
1052 AC_VERB_GET_POWER_STATE, 0);
1053
1054 if (state & AC_PWRST_ERROR)
1055 return true;
1056 state = (state >> 4) & 0x0f;
1057 return (state == target_state);
1058}
1059EXPORT_SYMBOL_GPL(snd_hdac_check_power_state);
09787492
AK		 1060/**
1061 * snd_hdac_sync_power_state - wait until actual power state matches
1062 * with the target state
1063 *
1064 * @hdac: the HDAC device
1065 * @nid: NID to send the command
1066 * @target_state: target state to check for
1067 *
1068 * Return power state or PS_ERROR if codec rejects GET verb.
1069 */
1070unsigned int snd_hdac_sync_power_state(struct hdac_device *codec,
1071 hda_nid_t nid, unsigned int power_state)
1072{
1073 unsigned long end_time = jiffies + msecs_to_jiffies(500);
1074 unsigned int state, actual_state, count;
1075
1076 for (count = 0; count < 500; count++) {
1077 state = snd_hdac_codec_read(codec, nid, 0,
1078 AC_VERB_GET_POWER_STATE, 0);
1079 if (state & AC_PWRST_ERROR) {
1080 msleep(20);
1081 break;
1082 }
1083 actual_state = (state >> 4) & 0x0f;
1084 if (actual_state == power_state)
1085 break;
1086 if (time_after_eq(jiffies, end_time))
1087 break;
1088 /* wait until the codec reachs to the target state */
1089 msleep(1);
1090 }
1091 return state;
1092}
1093EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state);
Linux 6.x block layer and io_uring tree(s)