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> |
b7d023e1 | 13 | #include <sound/pcm.h> |
7639a06c TI |
14 | #include "local.h" |
15 | ||
16 | static void setup_fg_nodes(struct hdac_device *codec); | |
17 | static int get_codec_vendor_name(struct hdac_device *codec); | |
18 | ||
19 | static void default_release(struct device *dev) | |
20 | { | |
21 | snd_hdac_device_exit(container_of(dev, struct hdac_device, dev)); | |
22 | } | |
23 | ||
24 | /** | |
25 | * snd_hdac_device_init - initialize the HD-audio codec base device | |
26 | * @codec: device to initialize | |
27 | * @bus: but to attach | |
28 | * @name: device name string | |
29 | * @addr: codec address | |
30 | * | |
31 | * Returns zero for success or a negative error code. | |
32 | * | |
33 | * This function increments the runtime PM counter and marks it active. | |
34 | * The caller needs to turn it off appropriately later. | |
35 | * | |
36 | * The caller needs to set the device's release op properly by itself. | |
37 | */ | |
38 | int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus, | |
39 | const char *name, unsigned int addr) | |
40 | { | |
41 | struct device *dev; | |
42 | hda_nid_t fg; | |
43 | int err; | |
44 | ||
45 | dev = &codec->dev; | |
46 | device_initialize(dev); | |
47 | dev->parent = bus->dev; | |
48 | dev->bus = &snd_hda_bus_type; | |
49 | dev->release = default_release; | |
3256be65 | 50 | dev->groups = hdac_dev_attr_groups; |
7639a06c TI |
51 | dev_set_name(dev, "%s", name); |
52 | device_enable_async_suspend(dev); | |
53 | ||
54 | codec->bus = bus; | |
55 | codec->addr = addr; | |
56 | codec->type = HDA_DEV_CORE; | |
57 | pm_runtime_set_active(&codec->dev); | |
58 | pm_runtime_get_noresume(&codec->dev); | |
59 | atomic_set(&codec->in_pm, 0); | |
60 | ||
61 | err = snd_hdac_bus_add_device(bus, codec); | |
62 | if (err < 0) | |
63 | goto error; | |
64 | ||
65 | /* fill parameters */ | |
66 | codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, | |
67 | AC_PAR_VENDOR_ID); | |
68 | if (codec->vendor_id == -1) { | |
69 | /* read again, hopefully the access method was corrected | |
70 | * in the last read... | |
71 | */ | |
72 | codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, | |
73 | AC_PAR_VENDOR_ID); | |
74 | } | |
75 | ||
76 | codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, | |
77 | AC_PAR_SUBSYSTEM_ID); | |
78 | codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, | |
79 | AC_PAR_REV_ID); | |
80 | ||
81 | setup_fg_nodes(codec); | |
82 | if (!codec->afg && !codec->mfg) { | |
83 | dev_err(dev, "no AFG or MFG node found\n"); | |
84 | err = -ENODEV; | |
85 | goto error; | |
86 | } | |
87 | ||
88 | fg = codec->afg ? codec->afg : codec->mfg; | |
89 | ||
90 | err = snd_hdac_refresh_widgets(codec); | |
91 | if (err < 0) | |
92 | goto error; | |
93 | ||
94 | codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE); | |
95 | /* reread ssid if not set by parameter */ | |
ffda568e | 96 | if (codec->subsystem_id == -1 || codec->subsystem_id == 0) |
7639a06c TI |
97 | snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0, |
98 | &codec->subsystem_id); | |
99 | ||
100 | err = get_codec_vendor_name(codec); | |
101 | if (err < 0) | |
102 | goto error; | |
103 | ||
104 | codec->chip_name = kasprintf(GFP_KERNEL, "ID %x", | |
105 | codec->vendor_id & 0xffff); | |
106 | if (!codec->chip_name) { | |
107 | err = -ENOMEM; | |
108 | goto error; | |
109 | } | |
110 | ||
111 | return 0; | |
112 | ||
113 | error: | |
7639a06c TI |
114 | put_device(&codec->dev); |
115 | return err; | |
116 | } | |
117 | EXPORT_SYMBOL_GPL(snd_hdac_device_init); | |
118 | ||
119 | /** | |
120 | * snd_hdac_device_exit - clean up the HD-audio codec base device | |
121 | * @codec: device to clean up | |
122 | */ | |
123 | void snd_hdac_device_exit(struct hdac_device *codec) | |
124 | { | |
c4c2533f | 125 | pm_runtime_put_noidle(&codec->dev); |
7639a06c TI |
126 | snd_hdac_bus_remove_device(codec->bus, codec); |
127 | kfree(codec->vendor_name); | |
128 | kfree(codec->chip_name); | |
129 | } | |
130 | EXPORT_SYMBOL_GPL(snd_hdac_device_exit); | |
131 | ||
3256be65 TI |
132 | /** |
133 | * snd_hdac_device_register - register the hd-audio codec base device | |
134 | * codec: the device to register | |
135 | */ | |
136 | int snd_hdac_device_register(struct hdac_device *codec) | |
137 | { | |
138 | int err; | |
139 | ||
140 | err = device_add(&codec->dev); | |
141 | if (err < 0) | |
142 | return err; | |
143 | err = hda_widget_sysfs_init(codec); | |
144 | if (err < 0) { | |
145 | device_del(&codec->dev); | |
146 | return err; | |
147 | } | |
148 | ||
149 | return 0; | |
150 | } | |
151 | EXPORT_SYMBOL_GPL(snd_hdac_device_register); | |
152 | ||
153 | /** | |
154 | * snd_hdac_device_unregister - unregister the hd-audio codec base device | |
155 | * codec: the device to unregister | |
156 | */ | |
157 | void snd_hdac_device_unregister(struct hdac_device *codec) | |
158 | { | |
159 | if (device_is_registered(&codec->dev)) { | |
160 | hda_widget_sysfs_exit(codec); | |
161 | device_del(&codec->dev); | |
162 | } | |
163 | } | |
164 | EXPORT_SYMBOL_GPL(snd_hdac_device_unregister); | |
165 | ||
7639a06c TI |
166 | /** |
167 | * snd_hdac_make_cmd - compose a 32bit command word to be sent to the | |
168 | * HD-audio controller | |
169 | * @codec: the codec object | |
170 | * @nid: NID to encode | |
171 | * @verb: verb to encode | |
172 | * @parm: parameter to encode | |
173 | * | |
174 | * Return an encoded command verb or -1 for error. | |
175 | */ | |
176 | unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid, | |
177 | unsigned int verb, unsigned int parm) | |
178 | { | |
179 | u32 val, addr; | |
180 | ||
181 | addr = codec->addr; | |
182 | if ((addr & ~0xf) || (nid & ~0x7f) || | |
183 | (verb & ~0xfff) || (parm & ~0xffff)) { | |
184 | dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n", | |
185 | addr, nid, verb, parm); | |
186 | return -1; | |
187 | } | |
188 | ||
189 | val = addr << 28; | |
190 | val |= (u32)nid << 20; | |
191 | val |= verb << 8; | |
192 | val |= parm; | |
193 | return val; | |
194 | } | |
195 | EXPORT_SYMBOL_GPL(snd_hdac_make_cmd); | |
196 | ||
05852448 TI |
197 | /** |
198 | * snd_hdac_exec_verb - execute an encoded verb | |
199 | * @codec: the codec object | |
200 | * @cmd: encoded verb to execute | |
201 | * @flags: optional flags, pass zero for default | |
202 | * @res: the pointer to store the result, NULL if running async | |
203 | * | |
204 | * Returns zero if successful, or a negative error code. | |
205 | * | |
206 | * This calls the exec_verb op when set in hdac_codec. If not, | |
207 | * call the default snd_hdac_bus_exec_verb(). | |
208 | */ | |
209 | int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd, | |
210 | unsigned int flags, unsigned int *res) | |
211 | { | |
212 | if (codec->exec_verb) | |
213 | return codec->exec_verb(codec, cmd, flags, res); | |
214 | return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res); | |
215 | } | |
216 | EXPORT_SYMBOL_GPL(snd_hdac_exec_verb); | |
217 | ||
218 | ||
7639a06c TI |
219 | /** |
220 | * snd_hdac_read - execute a verb | |
221 | * @codec: the codec object | |
222 | * @nid: NID to execute a verb | |
223 | * @verb: verb to execute | |
224 | * @parm: parameter for a verb | |
225 | * @res: the pointer to store the result, NULL if running async | |
226 | * | |
227 | * Returns zero if successful, or a negative error code. | |
228 | */ | |
229 | int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, | |
230 | unsigned int verb, unsigned int parm, unsigned int *res) | |
231 | { | |
232 | unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm); | |
233 | ||
05852448 | 234 | return snd_hdac_exec_verb(codec, cmd, 0, res); |
7639a06c TI |
235 | } |
236 | EXPORT_SYMBOL_GPL(snd_hdac_read); | |
237 | ||
238 | /** | |
01ed3c06 | 239 | * _snd_hdac_read_parm - read a parmeter |
7639a06c | 240 | * |
01ed3c06 | 241 | * This function returns zero or an error unlike snd_hdac_read_parm(). |
7639a06c | 242 | */ |
01ed3c06 TI |
243 | int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm, |
244 | unsigned int *res) | |
7639a06c | 245 | { |
01ed3c06 | 246 | unsigned int cmd; |
7639a06c | 247 | |
01ed3c06 TI |
248 | cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm; |
249 | return snd_hdac_regmap_read_raw(codec, cmd, res); | |
7639a06c | 250 | } |
01ed3c06 | 251 | EXPORT_SYMBOL_GPL(_snd_hdac_read_parm); |
7639a06c | 252 | |
9ba17b4d TI |
253 | /** |
254 | * snd_hdac_read_parm_uncached - read a codec parameter without caching | |
7639a06c TI |
255 | * @codec: the codec object |
256 | * @nid: NID to read a parameter | |
257 | * @parm: parameter to read | |
258 | * | |
259 | * Returns -1 for error. If you need to distinguish the error more | |
260 | * strictly, use snd_hdac_read() directly. | |
261 | */ | |
9ba17b4d TI |
262 | int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid, |
263 | int parm) | |
7639a06c TI |
264 | { |
265 | int val; | |
266 | ||
9ba17b4d TI |
267 | if (codec->regmap) |
268 | regcache_cache_bypass(codec->regmap, true); | |
269 | val = snd_hdac_read_parm(codec, nid, parm); | |
270 | if (codec->regmap) | |
271 | regcache_cache_bypass(codec->regmap, false); | |
7639a06c TI |
272 | return val; |
273 | } | |
9ba17b4d TI |
274 | EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached); |
275 | ||
faa75f8a TI |
276 | /** |
277 | * snd_hdac_override_parm - override read-only parameters | |
278 | * @codec: the codec object | |
279 | * @nid: NID for the parameter | |
280 | * @parm: the parameter to change | |
281 | * @val: the parameter value to overwrite | |
282 | */ | |
283 | int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid, | |
284 | unsigned int parm, unsigned int val) | |
285 | { | |
286 | unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm; | |
287 | int err; | |
288 | ||
289 | if (!codec->regmap) | |
290 | return -EINVAL; | |
291 | ||
292 | codec->caps_overwriting = true; | |
293 | err = snd_hdac_regmap_write_raw(codec, verb, val); | |
294 | codec->caps_overwriting = false; | |
295 | return err; | |
296 | } | |
297 | EXPORT_SYMBOL_GPL(snd_hdac_override_parm); | |
7639a06c TI |
298 | |
299 | /** | |
300 | * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes | |
301 | * @codec: the codec object | |
302 | * @nid: NID to inspect | |
303 | * @start_id: the pointer to store the starting NID | |
304 | * | |
305 | * Returns the number of subtree nodes or zero if not found. | |
9ba17b4d | 306 | * This function reads parameters always without caching. |
7639a06c TI |
307 | */ |
308 | int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid, | |
309 | hda_nid_t *start_id) | |
310 | { | |
311 | unsigned int parm; | |
312 | ||
9ba17b4d | 313 | parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT); |
7639a06c TI |
314 | if (parm == -1) { |
315 | *start_id = 0; | |
316 | return 0; | |
317 | } | |
318 | *start_id = (parm >> 16) & 0x7fff; | |
319 | return (int)(parm & 0x7fff); | |
320 | } | |
321 | EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes); | |
322 | ||
323 | /* | |
324 | * look for an AFG and MFG nodes | |
325 | */ | |
326 | static void setup_fg_nodes(struct hdac_device *codec) | |
327 | { | |
328 | int i, total_nodes, function_id; | |
329 | hda_nid_t nid; | |
330 | ||
331 | total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid); | |
332 | for (i = 0; i < total_nodes; i++, nid++) { | |
333 | function_id = snd_hdac_read_parm(codec, nid, | |
334 | AC_PAR_FUNCTION_TYPE); | |
335 | switch (function_id & 0xff) { | |
336 | case AC_GRP_AUDIO_FUNCTION: | |
337 | codec->afg = nid; | |
338 | codec->afg_function_id = function_id & 0xff; | |
339 | codec->afg_unsol = (function_id >> 8) & 1; | |
340 | break; | |
341 | case AC_GRP_MODEM_FUNCTION: | |
342 | codec->mfg = nid; | |
343 | codec->mfg_function_id = function_id & 0xff; | |
344 | codec->mfg_unsol = (function_id >> 8) & 1; | |
345 | break; | |
346 | default: | |
347 | break; | |
348 | } | |
349 | } | |
350 | } | |
351 | ||
352 | /** | |
353 | * snd_hdac_refresh_widgets - Reset the widget start/end nodes | |
354 | * @codec: the codec object | |
355 | */ | |
356 | int snd_hdac_refresh_widgets(struct hdac_device *codec) | |
357 | { | |
358 | hda_nid_t start_nid; | |
359 | int nums; | |
360 | ||
361 | nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid); | |
362 | if (!start_nid || nums <= 0 || nums >= 0xff) { | |
363 | dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n", | |
364 | codec->afg); | |
365 | return -EINVAL; | |
366 | } | |
367 | ||
368 | codec->num_nodes = nums; | |
369 | codec->start_nid = start_nid; | |
370 | codec->end_nid = start_nid + nums; | |
371 | return 0; | |
372 | } | |
373 | EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets); | |
374 | ||
18dfd79d VK |
375 | /** |
376 | * snd_hdac_refresh_widget_sysfs - Reset the codec widgets and reinit the | |
377 | * codec sysfs | |
378 | * @codec: the codec object | |
379 | * | |
380 | * first we need to remove sysfs, then refresh widgets and lastly | |
381 | * recreate it | |
382 | */ | |
383 | int snd_hdac_refresh_widget_sysfs(struct hdac_device *codec) | |
384 | { | |
385 | int ret; | |
386 | ||
387 | hda_widget_sysfs_exit(codec); | |
388 | ret = snd_hdac_refresh_widgets(codec); | |
389 | if (ret) { | |
390 | dev_err(&codec->dev, "failed to refresh widget: %d\n", ret); | |
391 | return ret; | |
392 | } | |
393 | ret = hda_widget_sysfs_init(codec); | |
394 | if (ret) { | |
395 | dev_err(&codec->dev, "failed to init sysfs: %d\n", ret); | |
396 | return ret; | |
397 | } | |
398 | ||
399 | return ret; | |
400 | } | |
401 | EXPORT_SYMBOL_GPL(snd_hdac_refresh_widget_sysfs); | |
402 | ||
7639a06c TI |
403 | /* return CONNLIST_LEN parameter of the given widget */ |
404 | static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid) | |
405 | { | |
406 | unsigned int wcaps = get_wcaps(codec, nid); | |
407 | unsigned int parm; | |
408 | ||
409 | if (!(wcaps & AC_WCAP_CONN_LIST) && | |
410 | get_wcaps_type(wcaps) != AC_WID_VOL_KNB) | |
411 | return 0; | |
412 | ||
413 | parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN); | |
414 | if (parm == -1) | |
415 | parm = 0; | |
416 | return parm; | |
417 | } | |
418 | ||
419 | /** | |
420 | * snd_hdac_get_connections - get a widget connection list | |
421 | * @codec: the codec object | |
422 | * @nid: NID | |
423 | * @conn_list: the array to store the results, can be NULL | |
424 | * @max_conns: the max size of the given array | |
425 | * | |
426 | * Returns the number of connected widgets, zero for no connection, or a | |
427 | * negative error code. When the number of elements don't fit with the | |
428 | * given array size, it returns -ENOSPC. | |
429 | * | |
430 | * When @conn_list is NULL, it just checks the number of connections. | |
431 | */ | |
432 | int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, | |
433 | hda_nid_t *conn_list, int max_conns) | |
434 | { | |
435 | unsigned int parm; | |
436 | int i, conn_len, conns, err; | |
437 | unsigned int shift, num_elems, mask; | |
438 | hda_nid_t prev_nid; | |
439 | int null_count = 0; | |
440 | ||
441 | parm = get_num_conns(codec, nid); | |
442 | if (!parm) | |
443 | return 0; | |
444 | ||
445 | if (parm & AC_CLIST_LONG) { | |
446 | /* long form */ | |
447 | shift = 16; | |
448 | num_elems = 2; | |
449 | } else { | |
450 | /* short form */ | |
451 | shift = 8; | |
452 | num_elems = 4; | |
453 | } | |
454 | conn_len = parm & AC_CLIST_LENGTH; | |
455 | mask = (1 << (shift-1)) - 1; | |
456 | ||
457 | if (!conn_len) | |
458 | return 0; /* no connection */ | |
459 | ||
460 | if (conn_len == 1) { | |
461 | /* single connection */ | |
462 | err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0, | |
463 | &parm); | |
464 | if (err < 0) | |
465 | return err; | |
466 | if (conn_list) | |
467 | conn_list[0] = parm & mask; | |
468 | return 1; | |
469 | } | |
470 | ||
471 | /* multi connection */ | |
472 | conns = 0; | |
473 | prev_nid = 0; | |
474 | for (i = 0; i < conn_len; i++) { | |
475 | int range_val; | |
476 | hda_nid_t val, n; | |
477 | ||
478 | if (i % num_elems == 0) { | |
479 | err = snd_hdac_read(codec, nid, | |
480 | AC_VERB_GET_CONNECT_LIST, i, | |
481 | &parm); | |
482 | if (err < 0) | |
483 | return -EIO; | |
484 | } | |
485 | range_val = !!(parm & (1 << (shift-1))); /* ranges */ | |
486 | val = parm & mask; | |
487 | if (val == 0 && null_count++) { /* no second chance */ | |
488 | dev_dbg(&codec->dev, | |
489 | "invalid CONNECT_LIST verb %x[%i]:%x\n", | |
490 | nid, i, parm); | |
491 | return 0; | |
492 | } | |
493 | parm >>= shift; | |
494 | if (range_val) { | |
495 | /* ranges between the previous and this one */ | |
496 | if (!prev_nid || prev_nid >= val) { | |
497 | dev_warn(&codec->dev, | |
498 | "invalid dep_range_val %x:%x\n", | |
499 | prev_nid, val); | |
500 | continue; | |
501 | } | |
502 | for (n = prev_nid + 1; n <= val; n++) { | |
503 | if (conn_list) { | |
504 | if (conns >= max_conns) | |
505 | return -ENOSPC; | |
506 | conn_list[conns] = n; | |
507 | } | |
508 | conns++; | |
509 | } | |
510 | } else { | |
511 | if (conn_list) { | |
512 | if (conns >= max_conns) | |
513 | return -ENOSPC; | |
514 | conn_list[conns] = val; | |
515 | } | |
516 | conns++; | |
517 | } | |
518 | prev_nid = val; | |
519 | } | |
520 | return conns; | |
521 | } | |
522 | EXPORT_SYMBOL_GPL(snd_hdac_get_connections); | |
523 | ||
524 | #ifdef CONFIG_PM | |
525 | /** | |
664c7155 | 526 | * snd_hdac_power_up - power up the codec |
7639a06c | 527 | * @codec: the codec object |
664c7155 TI |
528 | * |
529 | * This function calls the runtime PM helper to power up the given codec. | |
530 | * Unlike snd_hdac_power_up_pm(), you should call this only for the code | |
531 | * path that isn't included in PM path. Otherwise it gets stuck. | |
fbce23a0 TI |
532 | * |
533 | * Returns zero if successful, or a negative error code. | |
7639a06c | 534 | */ |
fbce23a0 | 535 | int snd_hdac_power_up(struct hdac_device *codec) |
7639a06c | 536 | { |
fbce23a0 | 537 | return pm_runtime_get_sync(&codec->dev); |
7639a06c TI |
538 | } |
539 | EXPORT_SYMBOL_GPL(snd_hdac_power_up); | |
540 | ||
541 | /** | |
664c7155 | 542 | * snd_hdac_power_down - power down the codec |
7639a06c | 543 | * @codec: the codec object |
fbce23a0 TI |
544 | * |
545 | * Returns zero if successful, or a negative error code. | |
7639a06c | 546 | */ |
fbce23a0 | 547 | int snd_hdac_power_down(struct hdac_device *codec) |
7639a06c TI |
548 | { |
549 | struct device *dev = &codec->dev; | |
550 | ||
7639a06c | 551 | pm_runtime_mark_last_busy(dev); |
fbce23a0 | 552 | return pm_runtime_put_autosuspend(dev); |
7639a06c TI |
553 | } |
554 | EXPORT_SYMBOL_GPL(snd_hdac_power_down); | |
c3aeda62 TI |
555 | |
556 | /** | |
557 | * snd_hdac_power_up_pm - power up the codec | |
558 | * @codec: the codec object | |
559 | * | |
560 | * This function can be called in a recursive code path like init code | |
561 | * which may be called by PM suspend/resume again. OTOH, if a power-up | |
562 | * call must wake up the sleeper (e.g. in a kctl callback), use | |
563 | * snd_hdac_power_up() instead. | |
fbce23a0 TI |
564 | * |
565 | * Returns zero if successful, or a negative error code. | |
c3aeda62 | 566 | */ |
fbce23a0 | 567 | int snd_hdac_power_up_pm(struct hdac_device *codec) |
c3aeda62 TI |
568 | { |
569 | if (!atomic_inc_not_zero(&codec->in_pm)) | |
fbce23a0 TI |
570 | return snd_hdac_power_up(codec); |
571 | return 0; | |
c3aeda62 TI |
572 | } |
573 | EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm); | |
574 | ||
575 | /** | |
576 | * snd_hdac_power_down_pm - power down the codec | |
577 | * @codec: the codec object | |
578 | * | |
579 | * Like snd_hdac_power_up_pm(), this function is used in a recursive | |
580 | * code path like init code which may be called by PM suspend/resume again. | |
fbce23a0 TI |
581 | * |
582 | * Returns zero if successful, or a negative error code. | |
c3aeda62 | 583 | */ |
fbce23a0 | 584 | int snd_hdac_power_down_pm(struct hdac_device *codec) |
c3aeda62 TI |
585 | { |
586 | if (atomic_dec_if_positive(&codec->in_pm) < 0) | |
fbce23a0 TI |
587 | return snd_hdac_power_down(codec); |
588 | return 0; | |
c3aeda62 TI |
589 | } |
590 | EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm); | |
7639a06c TI |
591 | #endif |
592 | ||
a5e7e07c ML |
593 | /* |
594 | * Enable/disable the link power for a codec. | |
595 | */ | |
596 | int snd_hdac_link_power(struct hdac_device *codec, bool enable) | |
597 | { | |
598 | if (!codec->link_power_control) | |
599 | return 0; | |
600 | ||
601 | if (codec->bus->ops->link_power) | |
602 | return codec->bus->ops->link_power(codec->bus, enable); | |
603 | else | |
604 | return -EINVAL; | |
605 | } | |
606 | EXPORT_SYMBOL_GPL(snd_hdac_link_power); | |
607 | ||
7639a06c TI |
608 | /* codec vendor labels */ |
609 | struct hda_vendor_id { | |
610 | unsigned int id; | |
611 | const char *name; | |
612 | }; | |
613 | ||
614 | static struct hda_vendor_id hda_vendor_ids[] = { | |
615 | { 0x1002, "ATI" }, | |
616 | { 0x1013, "Cirrus Logic" }, | |
617 | { 0x1057, "Motorola" }, | |
618 | { 0x1095, "Silicon Image" }, | |
619 | { 0x10de, "Nvidia" }, | |
620 | { 0x10ec, "Realtek" }, | |
621 | { 0x1102, "Creative" }, | |
622 | { 0x1106, "VIA" }, | |
623 | { 0x111d, "IDT" }, | |
624 | { 0x11c1, "LSI" }, | |
625 | { 0x11d4, "Analog Devices" }, | |
626 | { 0x13f6, "C-Media" }, | |
627 | { 0x14f1, "Conexant" }, | |
628 | { 0x17e8, "Chrontel" }, | |
629 | { 0x1854, "LG" }, | |
630 | { 0x1aec, "Wolfson Microelectronics" }, | |
631 | { 0x1af4, "QEMU" }, | |
632 | { 0x434d, "C-Media" }, | |
633 | { 0x8086, "Intel" }, | |
634 | { 0x8384, "SigmaTel" }, | |
635 | {} /* terminator */ | |
636 | }; | |
637 | ||
638 | /* store the codec vendor name */ | |
639 | static int get_codec_vendor_name(struct hdac_device *codec) | |
640 | { | |
641 | const struct hda_vendor_id *c; | |
642 | u16 vendor_id = codec->vendor_id >> 16; | |
643 | ||
644 | for (c = hda_vendor_ids; c->id; c++) { | |
645 | if (c->id == vendor_id) { | |
646 | codec->vendor_name = kstrdup(c->name, GFP_KERNEL); | |
647 | return codec->vendor_name ? 0 : -ENOMEM; | |
648 | } | |
649 | } | |
650 | ||
651 | codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id); | |
652 | return codec->vendor_name ? 0 : -ENOMEM; | |
653 | } | |
b7d023e1 TI |
654 | |
655 | /* | |
656 | * stream formats | |
657 | */ | |
658 | struct hda_rate_tbl { | |
659 | unsigned int hz; | |
660 | unsigned int alsa_bits; | |
661 | unsigned int hda_fmt; | |
662 | }; | |
663 | ||
664 | /* rate = base * mult / div */ | |
665 | #define HDA_RATE(base, mult, div) \ | |
666 | (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \ | |
667 | (((div) - 1) << AC_FMT_DIV_SHIFT)) | |
668 | ||
669 | static struct hda_rate_tbl rate_bits[] = { | |
670 | /* rate in Hz, ALSA rate bitmask, HDA format value */ | |
671 | ||
672 | /* autodetected value used in snd_hda_query_supported_pcm */ | |
673 | { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) }, | |
674 | { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) }, | |
675 | { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) }, | |
676 | { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) }, | |
677 | { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) }, | |
678 | { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) }, | |
679 | { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) }, | |
680 | { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) }, | |
681 | { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) }, | |
682 | { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) }, | |
683 | { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) }, | |
684 | #define AC_PAR_PCM_RATE_BITS 11 | |
685 | /* up to bits 10, 384kHZ isn't supported properly */ | |
686 | ||
687 | /* not autodetected value */ | |
688 | { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) }, | |
689 | ||
690 | { 0 } /* terminator */ | |
691 | }; | |
692 | ||
693 | /** | |
694 | * snd_hdac_calc_stream_format - calculate the format bitset | |
695 | * @rate: the sample rate | |
696 | * @channels: the number of channels | |
697 | * @format: the PCM format (SNDRV_PCM_FORMAT_XXX) | |
698 | * @maxbps: the max. bps | |
699 | * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant) | |
700 | * | |
701 | * Calculate the format bitset from the given rate, channels and th PCM format. | |
702 | * | |
703 | * Return zero if invalid. | |
704 | */ | |
705 | unsigned int snd_hdac_calc_stream_format(unsigned int rate, | |
706 | unsigned int channels, | |
707 | unsigned int format, | |
708 | unsigned int maxbps, | |
709 | unsigned short spdif_ctls) | |
710 | { | |
711 | int i; | |
712 | unsigned int val = 0; | |
713 | ||
714 | for (i = 0; rate_bits[i].hz; i++) | |
715 | if (rate_bits[i].hz == rate) { | |
716 | val = rate_bits[i].hda_fmt; | |
717 | break; | |
718 | } | |
719 | if (!rate_bits[i].hz) | |
720 | return 0; | |
721 | ||
722 | if (channels == 0 || channels > 8) | |
723 | return 0; | |
724 | val |= channels - 1; | |
725 | ||
726 | switch (snd_pcm_format_width(format)) { | |
727 | case 8: | |
728 | val |= AC_FMT_BITS_8; | |
729 | break; | |
730 | case 16: | |
731 | val |= AC_FMT_BITS_16; | |
732 | break; | |
733 | case 20: | |
734 | case 24: | |
735 | case 32: | |
736 | if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE) | |
737 | val |= AC_FMT_BITS_32; | |
738 | else if (maxbps >= 24) | |
739 | val |= AC_FMT_BITS_24; | |
740 | else | |
741 | val |= AC_FMT_BITS_20; | |
742 | break; | |
743 | default: | |
744 | return 0; | |
745 | } | |
746 | ||
747 | if (spdif_ctls & AC_DIG1_NONAUDIO) | |
748 | val |= AC_FMT_TYPE_NON_PCM; | |
749 | ||
750 | return val; | |
751 | } | |
752 | EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format); | |
753 | ||
754 | static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid) | |
755 | { | |
756 | unsigned int val = 0; | |
757 | ||
758 | if (nid != codec->afg && | |
759 | (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) | |
760 | val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM); | |
761 | if (!val || val == -1) | |
762 | val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM); | |
763 | if (!val || val == -1) | |
764 | return 0; | |
765 | return val; | |
766 | } | |
767 | ||
768 | static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid) | |
769 | { | |
770 | unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM); | |
771 | ||
772 | if (!streams || streams == -1) | |
773 | streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM); | |
774 | if (!streams || streams == -1) | |
775 | return 0; | |
776 | return streams; | |
777 | } | |
778 | ||
779 | /** | |
780 | * snd_hdac_query_supported_pcm - query the supported PCM rates and formats | |
781 | * @codec: the codec object | |
782 | * @nid: NID to query | |
783 | * @ratesp: the pointer to store the detected rate bitflags | |
784 | * @formatsp: the pointer to store the detected formats | |
785 | * @bpsp: the pointer to store the detected format widths | |
786 | * | |
787 | * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp | |
788 | * or @bsps argument is ignored. | |
789 | * | |
790 | * Returns 0 if successful, otherwise a negative error code. | |
791 | */ | |
792 | int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, | |
793 | u32 *ratesp, u64 *formatsp, unsigned int *bpsp) | |
794 | { | |
795 | unsigned int i, val, wcaps; | |
796 | ||
797 | wcaps = get_wcaps(codec, nid); | |
798 | val = query_pcm_param(codec, nid); | |
799 | ||
800 | if (ratesp) { | |
801 | u32 rates = 0; | |
802 | for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) { | |
803 | if (val & (1 << i)) | |
804 | rates |= rate_bits[i].alsa_bits; | |
805 | } | |
806 | if (rates == 0) { | |
807 | dev_err(&codec->dev, | |
808 | "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n", | |
809 | nid, val, | |
810 | (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0); | |
811 | return -EIO; | |
812 | } | |
813 | *ratesp = rates; | |
814 | } | |
815 | ||
816 | if (formatsp || bpsp) { | |
817 | u64 formats = 0; | |
818 | unsigned int streams, bps; | |
819 | ||
820 | streams = query_stream_param(codec, nid); | |
821 | if (!streams) | |
822 | return -EIO; | |
823 | ||
824 | bps = 0; | |
825 | if (streams & AC_SUPFMT_PCM) { | |
826 | if (val & AC_SUPPCM_BITS_8) { | |
827 | formats |= SNDRV_PCM_FMTBIT_U8; | |
828 | bps = 8; | |
829 | } | |
830 | if (val & AC_SUPPCM_BITS_16) { | |
831 | formats |= SNDRV_PCM_FMTBIT_S16_LE; | |
832 | bps = 16; | |
833 | } | |
834 | if (wcaps & AC_WCAP_DIGITAL) { | |
835 | if (val & AC_SUPPCM_BITS_32) | |
836 | formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE; | |
837 | if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24)) | |
838 | formats |= SNDRV_PCM_FMTBIT_S32_LE; | |
839 | if (val & AC_SUPPCM_BITS_24) | |
840 | bps = 24; | |
841 | else if (val & AC_SUPPCM_BITS_20) | |
842 | bps = 20; | |
843 | } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24| | |
844 | AC_SUPPCM_BITS_32)) { | |
845 | formats |= SNDRV_PCM_FMTBIT_S32_LE; | |
846 | if (val & AC_SUPPCM_BITS_32) | |
847 | bps = 32; | |
848 | else if (val & AC_SUPPCM_BITS_24) | |
849 | bps = 24; | |
850 | else if (val & AC_SUPPCM_BITS_20) | |
851 | bps = 20; | |
852 | } | |
853 | } | |
854 | #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */ | |
855 | if (streams & AC_SUPFMT_FLOAT32) { | |
856 | formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; | |
857 | if (!bps) | |
858 | bps = 32; | |
859 | } | |
860 | #endif | |
861 | if (streams == AC_SUPFMT_AC3) { | |
862 | /* should be exclusive */ | |
863 | /* temporary hack: we have still no proper support | |
864 | * for the direct AC3 stream... | |
865 | */ | |
866 | formats |= SNDRV_PCM_FMTBIT_U8; | |
867 | bps = 8; | |
868 | } | |
869 | if (formats == 0) { | |
870 | dev_err(&codec->dev, | |
871 | "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n", | |
872 | nid, val, | |
873 | (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0, | |
874 | streams); | |
875 | return -EIO; | |
876 | } | |
877 | if (formatsp) | |
878 | *formatsp = formats; | |
879 | if (bpsp) | |
880 | *bpsp = bps; | |
881 | } | |
882 | ||
883 | return 0; | |
884 | } | |
885 | EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm); | |
886 | ||
887 | /** | |
888 | * snd_hdac_is_supported_format - Check the validity of the format | |
889 | * @codec: the codec object | |
890 | * @nid: NID to check | |
891 | * @format: the HD-audio format value to check | |
892 | * | |
893 | * Check whether the given node supports the format value. | |
894 | * | |
895 | * Returns true if supported, false if not. | |
896 | */ | |
897 | bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, | |
898 | unsigned int format) | |
899 | { | |
900 | int i; | |
901 | unsigned int val = 0, rate, stream; | |
902 | ||
903 | val = query_pcm_param(codec, nid); | |
904 | if (!val) | |
905 | return false; | |
906 | ||
907 | rate = format & 0xff00; | |
908 | for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) | |
909 | if (rate_bits[i].hda_fmt == rate) { | |
910 | if (val & (1 << i)) | |
911 | break; | |
912 | return false; | |
913 | } | |
914 | if (i >= AC_PAR_PCM_RATE_BITS) | |
915 | return false; | |
916 | ||
917 | stream = query_stream_param(codec, nid); | |
918 | if (!stream) | |
919 | return false; | |
920 | ||
921 | if (stream & AC_SUPFMT_PCM) { | |
922 | switch (format & 0xf0) { | |
923 | case 0x00: | |
924 | if (!(val & AC_SUPPCM_BITS_8)) | |
925 | return false; | |
926 | break; | |
927 | case 0x10: | |
928 | if (!(val & AC_SUPPCM_BITS_16)) | |
929 | return false; | |
930 | break; | |
931 | case 0x20: | |
932 | if (!(val & AC_SUPPCM_BITS_20)) | |
933 | return false; | |
934 | break; | |
935 | case 0x30: | |
936 | if (!(val & AC_SUPPCM_BITS_24)) | |
937 | return false; | |
938 | break; | |
939 | case 0x40: | |
940 | if (!(val & AC_SUPPCM_BITS_32)) | |
941 | return false; | |
942 | break; | |
943 | default: | |
944 | return false; | |
945 | } | |
946 | } else { | |
947 | /* FIXME: check for float32 and AC3? */ | |
948 | } | |
949 | ||
950 | return true; | |
951 | } | |
952 | EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format); |