Commit | Line | Data |
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7639a06c TI |
1 | /* |
2 | * HD-audio codec core device | |
3 | */ | |
4 | ||
5 | #include <linux/init.h> | |
6 | #include <linux/device.h> | |
7 | #include <linux/slab.h> | |
8 | #include <linux/module.h> | |
9 | #include <linux/export.h> | |
10 | #include <linux/pm_runtime.h> | |
11 | #include <sound/hdaudio.h> | |
01ed3c06 | 12 | #include <sound/hda_regmap.h> |
7639a06c TI |
13 | #include "local.h" |
14 | ||
15 | static void setup_fg_nodes(struct hdac_device *codec); | |
16 | static int get_codec_vendor_name(struct hdac_device *codec); | |
17 | ||
18 | static void default_release(struct device *dev) | |
19 | { | |
20 | snd_hdac_device_exit(container_of(dev, struct hdac_device, dev)); | |
21 | } | |
22 | ||
23 | /** | |
24 | * snd_hdac_device_init - initialize the HD-audio codec base device | |
25 | * @codec: device to initialize | |
26 | * @bus: but to attach | |
27 | * @name: device name string | |
28 | * @addr: codec address | |
29 | * | |
30 | * Returns zero for success or a negative error code. | |
31 | * | |
32 | * This function increments the runtime PM counter and marks it active. | |
33 | * The caller needs to turn it off appropriately later. | |
34 | * | |
35 | * The caller needs to set the device's release op properly by itself. | |
36 | */ | |
37 | int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus, | |
38 | const char *name, unsigned int addr) | |
39 | { | |
40 | struct device *dev; | |
41 | hda_nid_t fg; | |
42 | int err; | |
43 | ||
44 | dev = &codec->dev; | |
45 | device_initialize(dev); | |
46 | dev->parent = bus->dev; | |
47 | dev->bus = &snd_hda_bus_type; | |
48 | dev->release = default_release; | |
3256be65 | 49 | dev->groups = hdac_dev_attr_groups; |
7639a06c TI |
50 | dev_set_name(dev, "%s", name); |
51 | device_enable_async_suspend(dev); | |
52 | ||
53 | codec->bus = bus; | |
54 | codec->addr = addr; | |
55 | codec->type = HDA_DEV_CORE; | |
56 | pm_runtime_set_active(&codec->dev); | |
57 | pm_runtime_get_noresume(&codec->dev); | |
58 | atomic_set(&codec->in_pm, 0); | |
59 | ||
60 | err = snd_hdac_bus_add_device(bus, codec); | |
61 | if (err < 0) | |
62 | goto error; | |
63 | ||
64 | /* fill parameters */ | |
65 | codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, | |
66 | AC_PAR_VENDOR_ID); | |
67 | if (codec->vendor_id == -1) { | |
68 | /* read again, hopefully the access method was corrected | |
69 | * in the last read... | |
70 | */ | |
71 | codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, | |
72 | AC_PAR_VENDOR_ID); | |
73 | } | |
74 | ||
75 | codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, | |
76 | AC_PAR_SUBSYSTEM_ID); | |
77 | codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, | |
78 | AC_PAR_REV_ID); | |
79 | ||
80 | setup_fg_nodes(codec); | |
81 | if (!codec->afg && !codec->mfg) { | |
82 | dev_err(dev, "no AFG or MFG node found\n"); | |
83 | err = -ENODEV; | |
84 | goto error; | |
85 | } | |
86 | ||
87 | fg = codec->afg ? codec->afg : codec->mfg; | |
88 | ||
89 | err = snd_hdac_refresh_widgets(codec); | |
90 | if (err < 0) | |
91 | goto error; | |
92 | ||
93 | codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE); | |
94 | /* reread ssid if not set by parameter */ | |
ffda568e | 95 | if (codec->subsystem_id == -1 || codec->subsystem_id == 0) |
7639a06c TI |
96 | snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0, |
97 | &codec->subsystem_id); | |
98 | ||
99 | err = get_codec_vendor_name(codec); | |
100 | if (err < 0) | |
101 | goto error; | |
102 | ||
103 | codec->chip_name = kasprintf(GFP_KERNEL, "ID %x", | |
104 | codec->vendor_id & 0xffff); | |
105 | if (!codec->chip_name) { | |
106 | err = -ENOMEM; | |
107 | goto error; | |
108 | } | |
109 | ||
110 | return 0; | |
111 | ||
112 | error: | |
7639a06c TI |
113 | put_device(&codec->dev); |
114 | return err; | |
115 | } | |
116 | EXPORT_SYMBOL_GPL(snd_hdac_device_init); | |
117 | ||
118 | /** | |
119 | * snd_hdac_device_exit - clean up the HD-audio codec base device | |
120 | * @codec: device to clean up | |
121 | */ | |
122 | void snd_hdac_device_exit(struct hdac_device *codec) | |
123 | { | |
c4c2533f | 124 | pm_runtime_put_noidle(&codec->dev); |
7639a06c TI |
125 | snd_hdac_bus_remove_device(codec->bus, codec); |
126 | kfree(codec->vendor_name); | |
127 | kfree(codec->chip_name); | |
128 | } | |
129 | EXPORT_SYMBOL_GPL(snd_hdac_device_exit); | |
130 | ||
3256be65 TI |
131 | /** |
132 | * snd_hdac_device_register - register the hd-audio codec base device | |
133 | * codec: the device to register | |
134 | */ | |
135 | int snd_hdac_device_register(struct hdac_device *codec) | |
136 | { | |
137 | int err; | |
138 | ||
139 | err = device_add(&codec->dev); | |
140 | if (err < 0) | |
141 | return err; | |
142 | err = hda_widget_sysfs_init(codec); | |
143 | if (err < 0) { | |
144 | device_del(&codec->dev); | |
145 | return err; | |
146 | } | |
147 | ||
148 | return 0; | |
149 | } | |
150 | EXPORT_SYMBOL_GPL(snd_hdac_device_register); | |
151 | ||
152 | /** | |
153 | * snd_hdac_device_unregister - unregister the hd-audio codec base device | |
154 | * codec: the device to unregister | |
155 | */ | |
156 | void snd_hdac_device_unregister(struct hdac_device *codec) | |
157 | { | |
158 | if (device_is_registered(&codec->dev)) { | |
159 | hda_widget_sysfs_exit(codec); | |
160 | device_del(&codec->dev); | |
161 | } | |
162 | } | |
163 | EXPORT_SYMBOL_GPL(snd_hdac_device_unregister); | |
164 | ||
7639a06c TI |
165 | /** |
166 | * snd_hdac_make_cmd - compose a 32bit command word to be sent to the | |
167 | * HD-audio controller | |
168 | * @codec: the codec object | |
169 | * @nid: NID to encode | |
170 | * @verb: verb to encode | |
171 | * @parm: parameter to encode | |
172 | * | |
173 | * Return an encoded command verb or -1 for error. | |
174 | */ | |
175 | unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid, | |
176 | unsigned int verb, unsigned int parm) | |
177 | { | |
178 | u32 val, addr; | |
179 | ||
180 | addr = codec->addr; | |
181 | if ((addr & ~0xf) || (nid & ~0x7f) || | |
182 | (verb & ~0xfff) || (parm & ~0xffff)) { | |
183 | dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n", | |
184 | addr, nid, verb, parm); | |
185 | return -1; | |
186 | } | |
187 | ||
188 | val = addr << 28; | |
189 | val |= (u32)nid << 20; | |
190 | val |= verb << 8; | |
191 | val |= parm; | |
192 | return val; | |
193 | } | |
194 | EXPORT_SYMBOL_GPL(snd_hdac_make_cmd); | |
195 | ||
05852448 TI |
196 | /** |
197 | * snd_hdac_exec_verb - execute an encoded verb | |
198 | * @codec: the codec object | |
199 | * @cmd: encoded verb to execute | |
200 | * @flags: optional flags, pass zero for default | |
201 | * @res: the pointer to store the result, NULL if running async | |
202 | * | |
203 | * Returns zero if successful, or a negative error code. | |
204 | * | |
205 | * This calls the exec_verb op when set in hdac_codec. If not, | |
206 | * call the default snd_hdac_bus_exec_verb(). | |
207 | */ | |
208 | int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd, | |
209 | unsigned int flags, unsigned int *res) | |
210 | { | |
211 | if (codec->exec_verb) | |
212 | return codec->exec_verb(codec, cmd, flags, res); | |
213 | return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res); | |
214 | } | |
215 | EXPORT_SYMBOL_GPL(snd_hdac_exec_verb); | |
216 | ||
217 | ||
7639a06c TI |
218 | /** |
219 | * snd_hdac_read - execute a verb | |
220 | * @codec: the codec object | |
221 | * @nid: NID to execute a verb | |
222 | * @verb: verb to execute | |
223 | * @parm: parameter for a verb | |
224 | * @res: the pointer to store the result, NULL if running async | |
225 | * | |
226 | * Returns zero if successful, or a negative error code. | |
227 | */ | |
228 | int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, | |
229 | unsigned int verb, unsigned int parm, unsigned int *res) | |
230 | { | |
231 | unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm); | |
232 | ||
05852448 | 233 | return snd_hdac_exec_verb(codec, cmd, 0, res); |
7639a06c TI |
234 | } |
235 | EXPORT_SYMBOL_GPL(snd_hdac_read); | |
236 | ||
237 | /** | |
01ed3c06 | 238 | * _snd_hdac_read_parm - read a parmeter |
7639a06c | 239 | * |
01ed3c06 | 240 | * This function returns zero or an error unlike snd_hdac_read_parm(). |
7639a06c | 241 | */ |
01ed3c06 TI |
242 | int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm, |
243 | unsigned int *res) | |
7639a06c | 244 | { |
01ed3c06 | 245 | unsigned int cmd; |
7639a06c | 246 | |
01ed3c06 TI |
247 | cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm; |
248 | return snd_hdac_regmap_read_raw(codec, cmd, res); | |
7639a06c | 249 | } |
01ed3c06 | 250 | EXPORT_SYMBOL_GPL(_snd_hdac_read_parm); |
7639a06c | 251 | |
9ba17b4d TI |
252 | /** |
253 | * snd_hdac_read_parm_uncached - read a codec parameter without caching | |
7639a06c TI |
254 | * @codec: the codec object |
255 | * @nid: NID to read a parameter | |
256 | * @parm: parameter to read | |
257 | * | |
258 | * Returns -1 for error. If you need to distinguish the error more | |
259 | * strictly, use snd_hdac_read() directly. | |
260 | */ | |
9ba17b4d TI |
261 | int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid, |
262 | int parm) | |
7639a06c TI |
263 | { |
264 | int val; | |
265 | ||
9ba17b4d TI |
266 | if (codec->regmap) |
267 | regcache_cache_bypass(codec->regmap, true); | |
268 | val = snd_hdac_read_parm(codec, nid, parm); | |
269 | if (codec->regmap) | |
270 | regcache_cache_bypass(codec->regmap, false); | |
7639a06c TI |
271 | return val; |
272 | } | |
9ba17b4d TI |
273 | EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached); |
274 | ||
faa75f8a TI |
275 | /** |
276 | * snd_hdac_override_parm - override read-only parameters | |
277 | * @codec: the codec object | |
278 | * @nid: NID for the parameter | |
279 | * @parm: the parameter to change | |
280 | * @val: the parameter value to overwrite | |
281 | */ | |
282 | int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid, | |
283 | unsigned int parm, unsigned int val) | |
284 | { | |
285 | unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm; | |
286 | int err; | |
287 | ||
288 | if (!codec->regmap) | |
289 | return -EINVAL; | |
290 | ||
291 | codec->caps_overwriting = true; | |
292 | err = snd_hdac_regmap_write_raw(codec, verb, val); | |
293 | codec->caps_overwriting = false; | |
294 | return err; | |
295 | } | |
296 | EXPORT_SYMBOL_GPL(snd_hdac_override_parm); | |
7639a06c TI |
297 | |
298 | /** | |
299 | * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes | |
300 | * @codec: the codec object | |
301 | * @nid: NID to inspect | |
302 | * @start_id: the pointer to store the starting NID | |
303 | * | |
304 | * Returns the number of subtree nodes or zero if not found. | |
9ba17b4d | 305 | * This function reads parameters always without caching. |
7639a06c TI |
306 | */ |
307 | int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid, | |
308 | hda_nid_t *start_id) | |
309 | { | |
310 | unsigned int parm; | |
311 | ||
9ba17b4d | 312 | parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT); |
7639a06c TI |
313 | if (parm == -1) { |
314 | *start_id = 0; | |
315 | return 0; | |
316 | } | |
317 | *start_id = (parm >> 16) & 0x7fff; | |
318 | return (int)(parm & 0x7fff); | |
319 | } | |
320 | EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes); | |
321 | ||
322 | /* | |
323 | * look for an AFG and MFG nodes | |
324 | */ | |
325 | static void setup_fg_nodes(struct hdac_device *codec) | |
326 | { | |
327 | int i, total_nodes, function_id; | |
328 | hda_nid_t nid; | |
329 | ||
330 | total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid); | |
331 | for (i = 0; i < total_nodes; i++, nid++) { | |
332 | function_id = snd_hdac_read_parm(codec, nid, | |
333 | AC_PAR_FUNCTION_TYPE); | |
334 | switch (function_id & 0xff) { | |
335 | case AC_GRP_AUDIO_FUNCTION: | |
336 | codec->afg = nid; | |
337 | codec->afg_function_id = function_id & 0xff; | |
338 | codec->afg_unsol = (function_id >> 8) & 1; | |
339 | break; | |
340 | case AC_GRP_MODEM_FUNCTION: | |
341 | codec->mfg = nid; | |
342 | codec->mfg_function_id = function_id & 0xff; | |
343 | codec->mfg_unsol = (function_id >> 8) & 1; | |
344 | break; | |
345 | default: | |
346 | break; | |
347 | } | |
348 | } | |
349 | } | |
350 | ||
351 | /** | |
352 | * snd_hdac_refresh_widgets - Reset the widget start/end nodes | |
353 | * @codec: the codec object | |
354 | */ | |
355 | int snd_hdac_refresh_widgets(struct hdac_device *codec) | |
356 | { | |
357 | hda_nid_t start_nid; | |
358 | int nums; | |
359 | ||
360 | nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid); | |
361 | if (!start_nid || nums <= 0 || nums >= 0xff) { | |
362 | dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n", | |
363 | codec->afg); | |
364 | return -EINVAL; | |
365 | } | |
366 | ||
367 | codec->num_nodes = nums; | |
368 | codec->start_nid = start_nid; | |
369 | codec->end_nid = start_nid + nums; | |
370 | return 0; | |
371 | } | |
372 | EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets); | |
373 | ||
374 | /* return CONNLIST_LEN parameter of the given widget */ | |
375 | static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid) | |
376 | { | |
377 | unsigned int wcaps = get_wcaps(codec, nid); | |
378 | unsigned int parm; | |
379 | ||
380 | if (!(wcaps & AC_WCAP_CONN_LIST) && | |
381 | get_wcaps_type(wcaps) != AC_WID_VOL_KNB) | |
382 | return 0; | |
383 | ||
384 | parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN); | |
385 | if (parm == -1) | |
386 | parm = 0; | |
387 | return parm; | |
388 | } | |
389 | ||
390 | /** | |
391 | * snd_hdac_get_connections - get a widget connection list | |
392 | * @codec: the codec object | |
393 | * @nid: NID | |
394 | * @conn_list: the array to store the results, can be NULL | |
395 | * @max_conns: the max size of the given array | |
396 | * | |
397 | * Returns the number of connected widgets, zero for no connection, or a | |
398 | * negative error code. When the number of elements don't fit with the | |
399 | * given array size, it returns -ENOSPC. | |
400 | * | |
401 | * When @conn_list is NULL, it just checks the number of connections. | |
402 | */ | |
403 | int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, | |
404 | hda_nid_t *conn_list, int max_conns) | |
405 | { | |
406 | unsigned int parm; | |
407 | int i, conn_len, conns, err; | |
408 | unsigned int shift, num_elems, mask; | |
409 | hda_nid_t prev_nid; | |
410 | int null_count = 0; | |
411 | ||
412 | parm = get_num_conns(codec, nid); | |
413 | if (!parm) | |
414 | return 0; | |
415 | ||
416 | if (parm & AC_CLIST_LONG) { | |
417 | /* long form */ | |
418 | shift = 16; | |
419 | num_elems = 2; | |
420 | } else { | |
421 | /* short form */ | |
422 | shift = 8; | |
423 | num_elems = 4; | |
424 | } | |
425 | conn_len = parm & AC_CLIST_LENGTH; | |
426 | mask = (1 << (shift-1)) - 1; | |
427 | ||
428 | if (!conn_len) | |
429 | return 0; /* no connection */ | |
430 | ||
431 | if (conn_len == 1) { | |
432 | /* single connection */ | |
433 | err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0, | |
434 | &parm); | |
435 | if (err < 0) | |
436 | return err; | |
437 | if (conn_list) | |
438 | conn_list[0] = parm & mask; | |
439 | return 1; | |
440 | } | |
441 | ||
442 | /* multi connection */ | |
443 | conns = 0; | |
444 | prev_nid = 0; | |
445 | for (i = 0; i < conn_len; i++) { | |
446 | int range_val; | |
447 | hda_nid_t val, n; | |
448 | ||
449 | if (i % num_elems == 0) { | |
450 | err = snd_hdac_read(codec, nid, | |
451 | AC_VERB_GET_CONNECT_LIST, i, | |
452 | &parm); | |
453 | if (err < 0) | |
454 | return -EIO; | |
455 | } | |
456 | range_val = !!(parm & (1 << (shift-1))); /* ranges */ | |
457 | val = parm & mask; | |
458 | if (val == 0 && null_count++) { /* no second chance */ | |
459 | dev_dbg(&codec->dev, | |
460 | "invalid CONNECT_LIST verb %x[%i]:%x\n", | |
461 | nid, i, parm); | |
462 | return 0; | |
463 | } | |
464 | parm >>= shift; | |
465 | if (range_val) { | |
466 | /* ranges between the previous and this one */ | |
467 | if (!prev_nid || prev_nid >= val) { | |
468 | dev_warn(&codec->dev, | |
469 | "invalid dep_range_val %x:%x\n", | |
470 | prev_nid, val); | |
471 | continue; | |
472 | } | |
473 | for (n = prev_nid + 1; n <= val; n++) { | |
474 | if (conn_list) { | |
475 | if (conns >= max_conns) | |
476 | return -ENOSPC; | |
477 | conn_list[conns] = n; | |
478 | } | |
479 | conns++; | |
480 | } | |
481 | } else { | |
482 | if (conn_list) { | |
483 | if (conns >= max_conns) | |
484 | return -ENOSPC; | |
485 | conn_list[conns] = val; | |
486 | } | |
487 | conns++; | |
488 | } | |
489 | prev_nid = val; | |
490 | } | |
491 | return conns; | |
492 | } | |
493 | EXPORT_SYMBOL_GPL(snd_hdac_get_connections); | |
494 | ||
495 | #ifdef CONFIG_PM | |
496 | /** | |
664c7155 | 497 | * snd_hdac_power_up - power up the codec |
7639a06c | 498 | * @codec: the codec object |
664c7155 TI |
499 | * |
500 | * This function calls the runtime PM helper to power up the given codec. | |
501 | * Unlike snd_hdac_power_up_pm(), you should call this only for the code | |
502 | * path that isn't included in PM path. Otherwise it gets stuck. | |
7639a06c TI |
503 | */ |
504 | void snd_hdac_power_up(struct hdac_device *codec) | |
505 | { | |
664c7155 | 506 | pm_runtime_get_sync(&codec->dev); |
7639a06c TI |
507 | } |
508 | EXPORT_SYMBOL_GPL(snd_hdac_power_up); | |
509 | ||
510 | /** | |
664c7155 | 511 | * snd_hdac_power_down - power down the codec |
7639a06c TI |
512 | * @codec: the codec object |
513 | */ | |
514 | void snd_hdac_power_down(struct hdac_device *codec) | |
515 | { | |
516 | struct device *dev = &codec->dev; | |
517 | ||
7639a06c TI |
518 | pm_runtime_mark_last_busy(dev); |
519 | pm_runtime_put_autosuspend(dev); | |
520 | } | |
521 | EXPORT_SYMBOL_GPL(snd_hdac_power_down); | |
c3aeda62 TI |
522 | |
523 | /** | |
524 | * snd_hdac_power_up_pm - power up the codec | |
525 | * @codec: the codec object | |
526 | * | |
527 | * This function can be called in a recursive code path like init code | |
528 | * which may be called by PM suspend/resume again. OTOH, if a power-up | |
529 | * call must wake up the sleeper (e.g. in a kctl callback), use | |
530 | * snd_hdac_power_up() instead. | |
531 | */ | |
532 | void snd_hdac_power_up_pm(struct hdac_device *codec) | |
533 | { | |
534 | if (!atomic_inc_not_zero(&codec->in_pm)) | |
535 | snd_hdac_power_up(codec); | |
536 | } | |
537 | EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm); | |
538 | ||
539 | /** | |
540 | * snd_hdac_power_down_pm - power down the codec | |
541 | * @codec: the codec object | |
542 | * | |
543 | * Like snd_hdac_power_up_pm(), this function is used in a recursive | |
544 | * code path like init code which may be called by PM suspend/resume again. | |
545 | */ | |
546 | void snd_hdac_power_down_pm(struct hdac_device *codec) | |
547 | { | |
548 | if (atomic_dec_if_positive(&codec->in_pm) < 0) | |
549 | snd_hdac_power_down(codec); | |
550 | } | |
551 | EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm); | |
7639a06c TI |
552 | #endif |
553 | ||
554 | /* codec vendor labels */ | |
555 | struct hda_vendor_id { | |
556 | unsigned int id; | |
557 | const char *name; | |
558 | }; | |
559 | ||
560 | static struct hda_vendor_id hda_vendor_ids[] = { | |
561 | { 0x1002, "ATI" }, | |
562 | { 0x1013, "Cirrus Logic" }, | |
563 | { 0x1057, "Motorola" }, | |
564 | { 0x1095, "Silicon Image" }, | |
565 | { 0x10de, "Nvidia" }, | |
566 | { 0x10ec, "Realtek" }, | |
567 | { 0x1102, "Creative" }, | |
568 | { 0x1106, "VIA" }, | |
569 | { 0x111d, "IDT" }, | |
570 | { 0x11c1, "LSI" }, | |
571 | { 0x11d4, "Analog Devices" }, | |
572 | { 0x13f6, "C-Media" }, | |
573 | { 0x14f1, "Conexant" }, | |
574 | { 0x17e8, "Chrontel" }, | |
575 | { 0x1854, "LG" }, | |
576 | { 0x1aec, "Wolfson Microelectronics" }, | |
577 | { 0x1af4, "QEMU" }, | |
578 | { 0x434d, "C-Media" }, | |
579 | { 0x8086, "Intel" }, | |
580 | { 0x8384, "SigmaTel" }, | |
581 | {} /* terminator */ | |
582 | }; | |
583 | ||
584 | /* store the codec vendor name */ | |
585 | static int get_codec_vendor_name(struct hdac_device *codec) | |
586 | { | |
587 | const struct hda_vendor_id *c; | |
588 | u16 vendor_id = codec->vendor_id >> 16; | |
589 | ||
590 | for (c = hda_vendor_ids; c->id; c++) { | |
591 | if (c->id == vendor_id) { | |
592 | codec->vendor_name = kstrdup(c->name, GFP_KERNEL); | |
593 | return codec->vendor_name ? 0 : -ENOMEM; | |
594 | } | |
595 | } | |
596 | ||
597 | codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id); | |
598 | return codec->vendor_name ? 0 : -ENOMEM; | |
599 | } |