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 | ||
ded255be TI |
166 | /** |
167 | * snd_hdac_device_set_chip_name - set/update the codec name | |
168 | * @codec: the HDAC device | |
169 | * @name: name string to set | |
170 | * | |
171 | * Returns 0 if the name is set or updated, or a negative error code. | |
172 | */ | |
173 | int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name) | |
174 | { | |
175 | char *newname; | |
176 | ||
177 | if (!name) | |
178 | return 0; | |
179 | newname = kstrdup(name, GFP_KERNEL); | |
180 | if (!newname) | |
181 | return -ENOMEM; | |
182 | kfree(codec->chip_name); | |
183 | codec->chip_name = newname; | |
184 | return 0; | |
185 | } | |
186 | EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name); | |
187 | ||
4f9e0c38 TI |
188 | /** |
189 | * snd_hdac_codec_modalias - give the module alias name | |
190 | * @codec: HDAC device | |
191 | * @buf: string buffer to store | |
192 | * @size: string buffer size | |
193 | * | |
194 | * Returns the size of string, like snprintf(), or a negative error code. | |
195 | */ | |
196 | int snd_hdac_codec_modalias(struct hdac_device *codec, char *buf, size_t size) | |
197 | { | |
198 | return snprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n", | |
199 | codec->vendor_id, codec->revision_id, codec->type); | |
200 | } | |
201 | EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias); | |
202 | ||
7639a06c TI |
203 | /** |
204 | * snd_hdac_make_cmd - compose a 32bit command word to be sent to the | |
205 | * HD-audio controller | |
206 | * @codec: the codec object | |
207 | * @nid: NID to encode | |
208 | * @verb: verb to encode | |
209 | * @parm: parameter to encode | |
210 | * | |
211 | * Return an encoded command verb or -1 for error. | |
212 | */ | |
213 | unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid, | |
214 | unsigned int verb, unsigned int parm) | |
215 | { | |
216 | u32 val, addr; | |
217 | ||
218 | addr = codec->addr; | |
219 | if ((addr & ~0xf) || (nid & ~0x7f) || | |
220 | (verb & ~0xfff) || (parm & ~0xffff)) { | |
221 | dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n", | |
222 | addr, nid, verb, parm); | |
223 | return -1; | |
224 | } | |
225 | ||
226 | val = addr << 28; | |
227 | val |= (u32)nid << 20; | |
228 | val |= verb << 8; | |
229 | val |= parm; | |
230 | return val; | |
231 | } | |
232 | EXPORT_SYMBOL_GPL(snd_hdac_make_cmd); | |
233 | ||
05852448 TI |
234 | /** |
235 | * snd_hdac_exec_verb - execute an encoded verb | |
236 | * @codec: the codec object | |
237 | * @cmd: encoded verb to execute | |
238 | * @flags: optional flags, pass zero for default | |
239 | * @res: the pointer to store the result, NULL if running async | |
240 | * | |
241 | * Returns zero if successful, or a negative error code. | |
242 | * | |
243 | * This calls the exec_verb op when set in hdac_codec. If not, | |
244 | * call the default snd_hdac_bus_exec_verb(). | |
245 | */ | |
246 | int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd, | |
247 | unsigned int flags, unsigned int *res) | |
248 | { | |
249 | if (codec->exec_verb) | |
250 | return codec->exec_verb(codec, cmd, flags, res); | |
251 | return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res); | |
252 | } | |
253 | EXPORT_SYMBOL_GPL(snd_hdac_exec_verb); | |
254 | ||
255 | ||
7639a06c TI |
256 | /** |
257 | * snd_hdac_read - execute a verb | |
258 | * @codec: the codec object | |
259 | * @nid: NID to execute a verb | |
260 | * @verb: verb to execute | |
261 | * @parm: parameter for a verb | |
262 | * @res: the pointer to store the result, NULL if running async | |
263 | * | |
264 | * Returns zero if successful, or a negative error code. | |
265 | */ | |
266 | int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, | |
267 | unsigned int verb, unsigned int parm, unsigned int *res) | |
268 | { | |
269 | unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm); | |
270 | ||
05852448 | 271 | return snd_hdac_exec_verb(codec, cmd, 0, res); |
7639a06c TI |
272 | } |
273 | EXPORT_SYMBOL_GPL(snd_hdac_read); | |
274 | ||
275 | /** | |
01ed3c06 | 276 | * _snd_hdac_read_parm - read a parmeter |
7639a06c | 277 | * |
01ed3c06 | 278 | * This function returns zero or an error unlike snd_hdac_read_parm(). |
7639a06c | 279 | */ |
01ed3c06 TI |
280 | int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm, |
281 | unsigned int *res) | |
7639a06c | 282 | { |
01ed3c06 | 283 | unsigned int cmd; |
7639a06c | 284 | |
01ed3c06 TI |
285 | cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm; |
286 | return snd_hdac_regmap_read_raw(codec, cmd, res); | |
7639a06c | 287 | } |
01ed3c06 | 288 | EXPORT_SYMBOL_GPL(_snd_hdac_read_parm); |
7639a06c | 289 | |
9ba17b4d TI |
290 | /** |
291 | * snd_hdac_read_parm_uncached - read a codec parameter without caching | |
7639a06c TI |
292 | * @codec: the codec object |
293 | * @nid: NID to read a parameter | |
294 | * @parm: parameter to read | |
295 | * | |
296 | * Returns -1 for error. If you need to distinguish the error more | |
297 | * strictly, use snd_hdac_read() directly. | |
298 | */ | |
9ba17b4d TI |
299 | int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid, |
300 | int parm) | |
7639a06c TI |
301 | { |
302 | int val; | |
303 | ||
9ba17b4d TI |
304 | if (codec->regmap) |
305 | regcache_cache_bypass(codec->regmap, true); | |
306 | val = snd_hdac_read_parm(codec, nid, parm); | |
307 | if (codec->regmap) | |
308 | regcache_cache_bypass(codec->regmap, false); | |
7639a06c TI |
309 | return val; |
310 | } | |
9ba17b4d TI |
311 | EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached); |
312 | ||
faa75f8a TI |
313 | /** |
314 | * snd_hdac_override_parm - override read-only parameters | |
315 | * @codec: the codec object | |
316 | * @nid: NID for the parameter | |
317 | * @parm: the parameter to change | |
318 | * @val: the parameter value to overwrite | |
319 | */ | |
320 | int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid, | |
321 | unsigned int parm, unsigned int val) | |
322 | { | |
323 | unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm; | |
324 | int err; | |
325 | ||
326 | if (!codec->regmap) | |
327 | return -EINVAL; | |
328 | ||
329 | codec->caps_overwriting = true; | |
330 | err = snd_hdac_regmap_write_raw(codec, verb, val); | |
331 | codec->caps_overwriting = false; | |
332 | return err; | |
333 | } | |
334 | EXPORT_SYMBOL_GPL(snd_hdac_override_parm); | |
7639a06c TI |
335 | |
336 | /** | |
337 | * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes | |
338 | * @codec: the codec object | |
339 | * @nid: NID to inspect | |
340 | * @start_id: the pointer to store the starting NID | |
341 | * | |
342 | * Returns the number of subtree nodes or zero if not found. | |
9ba17b4d | 343 | * This function reads parameters always without caching. |
7639a06c TI |
344 | */ |
345 | int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid, | |
346 | hda_nid_t *start_id) | |
347 | { | |
348 | unsigned int parm; | |
349 | ||
9ba17b4d | 350 | parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT); |
7639a06c TI |
351 | if (parm == -1) { |
352 | *start_id = 0; | |
353 | return 0; | |
354 | } | |
355 | *start_id = (parm >> 16) & 0x7fff; | |
356 | return (int)(parm & 0x7fff); | |
357 | } | |
358 | EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes); | |
359 | ||
360 | /* | |
361 | * look for an AFG and MFG nodes | |
362 | */ | |
363 | static void setup_fg_nodes(struct hdac_device *codec) | |
364 | { | |
365 | int i, total_nodes, function_id; | |
366 | hda_nid_t nid; | |
367 | ||
368 | total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid); | |
369 | for (i = 0; i < total_nodes; i++, nid++) { | |
370 | function_id = snd_hdac_read_parm(codec, nid, | |
371 | AC_PAR_FUNCTION_TYPE); | |
372 | switch (function_id & 0xff) { | |
373 | case AC_GRP_AUDIO_FUNCTION: | |
374 | codec->afg = nid; | |
375 | codec->afg_function_id = function_id & 0xff; | |
376 | codec->afg_unsol = (function_id >> 8) & 1; | |
377 | break; | |
378 | case AC_GRP_MODEM_FUNCTION: | |
379 | codec->mfg = nid; | |
380 | codec->mfg_function_id = function_id & 0xff; | |
381 | codec->mfg_unsol = (function_id >> 8) & 1; | |
382 | break; | |
383 | default: | |
384 | break; | |
385 | } | |
386 | } | |
387 | } | |
388 | ||
389 | /** | |
390 | * snd_hdac_refresh_widgets - Reset the widget start/end nodes | |
391 | * @codec: the codec object | |
392 | */ | |
393 | int snd_hdac_refresh_widgets(struct hdac_device *codec) | |
394 | { | |
395 | hda_nid_t start_nid; | |
396 | int nums; | |
397 | ||
398 | nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid); | |
399 | if (!start_nid || nums <= 0 || nums >= 0xff) { | |
400 | dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n", | |
401 | codec->afg); | |
402 | return -EINVAL; | |
403 | } | |
404 | ||
405 | codec->num_nodes = nums; | |
406 | codec->start_nid = start_nid; | |
407 | codec->end_nid = start_nid + nums; | |
408 | return 0; | |
409 | } | |
410 | EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets); | |
411 | ||
18dfd79d VK |
412 | /** |
413 | * snd_hdac_refresh_widget_sysfs - Reset the codec widgets and reinit the | |
414 | * codec sysfs | |
415 | * @codec: the codec object | |
416 | * | |
417 | * first we need to remove sysfs, then refresh widgets and lastly | |
418 | * recreate it | |
419 | */ | |
420 | int snd_hdac_refresh_widget_sysfs(struct hdac_device *codec) | |
421 | { | |
422 | int ret; | |
423 | ||
a92d5ee8 TI |
424 | if (device_is_registered(&codec->dev)) |
425 | hda_widget_sysfs_exit(codec); | |
18dfd79d VK |
426 | ret = snd_hdac_refresh_widgets(codec); |
427 | if (ret) { | |
428 | dev_err(&codec->dev, "failed to refresh widget: %d\n", ret); | |
429 | return ret; | |
430 | } | |
a92d5ee8 TI |
431 | if (device_is_registered(&codec->dev)) { |
432 | ret = hda_widget_sysfs_init(codec); | |
433 | if (ret) { | |
434 | dev_err(&codec->dev, "failed to init sysfs: %d\n", ret); | |
435 | return ret; | |
436 | } | |
18dfd79d | 437 | } |
18dfd79d VK |
438 | return ret; |
439 | } | |
440 | EXPORT_SYMBOL_GPL(snd_hdac_refresh_widget_sysfs); | |
441 | ||
7639a06c TI |
442 | /* return CONNLIST_LEN parameter of the given widget */ |
443 | static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid) | |
444 | { | |
445 | unsigned int wcaps = get_wcaps(codec, nid); | |
446 | unsigned int parm; | |
447 | ||
448 | if (!(wcaps & AC_WCAP_CONN_LIST) && | |
449 | get_wcaps_type(wcaps) != AC_WID_VOL_KNB) | |
450 | return 0; | |
451 | ||
452 | parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN); | |
453 | if (parm == -1) | |
454 | parm = 0; | |
455 | return parm; | |
456 | } | |
457 | ||
458 | /** | |
459 | * snd_hdac_get_connections - get a widget connection list | |
460 | * @codec: the codec object | |
461 | * @nid: NID | |
462 | * @conn_list: the array to store the results, can be NULL | |
463 | * @max_conns: the max size of the given array | |
464 | * | |
465 | * Returns the number of connected widgets, zero for no connection, or a | |
466 | * negative error code. When the number of elements don't fit with the | |
467 | * given array size, it returns -ENOSPC. | |
468 | * | |
469 | * When @conn_list is NULL, it just checks the number of connections. | |
470 | */ | |
471 | int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, | |
472 | hda_nid_t *conn_list, int max_conns) | |
473 | { | |
474 | unsigned int parm; | |
475 | int i, conn_len, conns, err; | |
476 | unsigned int shift, num_elems, mask; | |
477 | hda_nid_t prev_nid; | |
478 | int null_count = 0; | |
479 | ||
480 | parm = get_num_conns(codec, nid); | |
481 | if (!parm) | |
482 | return 0; | |
483 | ||
484 | if (parm & AC_CLIST_LONG) { | |
485 | /* long form */ | |
486 | shift = 16; | |
487 | num_elems = 2; | |
488 | } else { | |
489 | /* short form */ | |
490 | shift = 8; | |
491 | num_elems = 4; | |
492 | } | |
493 | conn_len = parm & AC_CLIST_LENGTH; | |
494 | mask = (1 << (shift-1)) - 1; | |
495 | ||
496 | if (!conn_len) | |
497 | return 0; /* no connection */ | |
498 | ||
499 | if (conn_len == 1) { | |
500 | /* single connection */ | |
501 | err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0, | |
502 | &parm); | |
503 | if (err < 0) | |
504 | return err; | |
505 | if (conn_list) | |
506 | conn_list[0] = parm & mask; | |
507 | return 1; | |
508 | } | |
509 | ||
510 | /* multi connection */ | |
511 | conns = 0; | |
512 | prev_nid = 0; | |
513 | for (i = 0; i < conn_len; i++) { | |
514 | int range_val; | |
515 | hda_nid_t val, n; | |
516 | ||
517 | if (i % num_elems == 0) { | |
518 | err = snd_hdac_read(codec, nid, | |
519 | AC_VERB_GET_CONNECT_LIST, i, | |
520 | &parm); | |
521 | if (err < 0) | |
522 | return -EIO; | |
523 | } | |
524 | range_val = !!(parm & (1 << (shift-1))); /* ranges */ | |
525 | val = parm & mask; | |
526 | if (val == 0 && null_count++) { /* no second chance */ | |
527 | dev_dbg(&codec->dev, | |
528 | "invalid CONNECT_LIST verb %x[%i]:%x\n", | |
529 | nid, i, parm); | |
530 | return 0; | |
531 | } | |
532 | parm >>= shift; | |
533 | if (range_val) { | |
534 | /* ranges between the previous and this one */ | |
535 | if (!prev_nid || prev_nid >= val) { | |
536 | dev_warn(&codec->dev, | |
537 | "invalid dep_range_val %x:%x\n", | |
538 | prev_nid, val); | |
539 | continue; | |
540 | } | |
541 | for (n = prev_nid + 1; n <= val; n++) { | |
542 | if (conn_list) { | |
543 | if (conns >= max_conns) | |
544 | return -ENOSPC; | |
545 | conn_list[conns] = n; | |
546 | } | |
547 | conns++; | |
548 | } | |
549 | } else { | |
550 | if (conn_list) { | |
551 | if (conns >= max_conns) | |
552 | return -ENOSPC; | |
553 | conn_list[conns] = val; | |
554 | } | |
555 | conns++; | |
556 | } | |
557 | prev_nid = val; | |
558 | } | |
559 | return conns; | |
560 | } | |
561 | EXPORT_SYMBOL_GPL(snd_hdac_get_connections); | |
562 | ||
563 | #ifdef CONFIG_PM | |
564 | /** | |
664c7155 | 565 | * snd_hdac_power_up - power up the codec |
7639a06c | 566 | * @codec: the codec object |
664c7155 TI |
567 | * |
568 | * This function calls the runtime PM helper to power up the given codec. | |
569 | * Unlike snd_hdac_power_up_pm(), you should call this only for the code | |
570 | * path that isn't included in PM path. Otherwise it gets stuck. | |
fbce23a0 TI |
571 | * |
572 | * Returns zero if successful, or a negative error code. | |
7639a06c | 573 | */ |
fbce23a0 | 574 | int snd_hdac_power_up(struct hdac_device *codec) |
7639a06c | 575 | { |
fbce23a0 | 576 | return pm_runtime_get_sync(&codec->dev); |
7639a06c TI |
577 | } |
578 | EXPORT_SYMBOL_GPL(snd_hdac_power_up); | |
579 | ||
580 | /** | |
664c7155 | 581 | * snd_hdac_power_down - power down the codec |
7639a06c | 582 | * @codec: the codec object |
fbce23a0 TI |
583 | * |
584 | * Returns zero if successful, or a negative error code. | |
7639a06c | 585 | */ |
fbce23a0 | 586 | int snd_hdac_power_down(struct hdac_device *codec) |
7639a06c TI |
587 | { |
588 | struct device *dev = &codec->dev; | |
589 | ||
7639a06c | 590 | pm_runtime_mark_last_busy(dev); |
fbce23a0 | 591 | return pm_runtime_put_autosuspend(dev); |
7639a06c TI |
592 | } |
593 | EXPORT_SYMBOL_GPL(snd_hdac_power_down); | |
c3aeda62 TI |
594 | |
595 | /** | |
596 | * snd_hdac_power_up_pm - power up the codec | |
597 | * @codec: the codec object | |
598 | * | |
599 | * This function can be called in a recursive code path like init code | |
600 | * which may be called by PM suspend/resume again. OTOH, if a power-up | |
601 | * call must wake up the sleeper (e.g. in a kctl callback), use | |
602 | * snd_hdac_power_up() instead. | |
fbce23a0 TI |
603 | * |
604 | * Returns zero if successful, or a negative error code. | |
c3aeda62 | 605 | */ |
fbce23a0 | 606 | int snd_hdac_power_up_pm(struct hdac_device *codec) |
c3aeda62 TI |
607 | { |
608 | if (!atomic_inc_not_zero(&codec->in_pm)) | |
fbce23a0 TI |
609 | return snd_hdac_power_up(codec); |
610 | return 0; | |
c3aeda62 TI |
611 | } |
612 | EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm); | |
613 | ||
fc4f000b TI |
614 | /* like snd_hdac_power_up_pm(), but only increment the pm count when |
615 | * already powered up. Returns -1 if not powered up, 1 if incremented | |
616 | * or 0 if unchanged. Only used in hdac_regmap.c | |
617 | */ | |
618 | int snd_hdac_keep_power_up(struct hdac_device *codec) | |
619 | { | |
620 | if (!atomic_inc_not_zero(&codec->in_pm)) { | |
621 | int ret = pm_runtime_get_if_in_use(&codec->dev); | |
622 | if (!ret) | |
623 | return -1; | |
624 | if (ret < 0) | |
625 | return 0; | |
626 | } | |
627 | return 1; | |
628 | } | |
629 | ||
c3aeda62 TI |
630 | /** |
631 | * snd_hdac_power_down_pm - power down the codec | |
632 | * @codec: the codec object | |
633 | * | |
634 | * Like snd_hdac_power_up_pm(), this function is used in a recursive | |
635 | * code path like init code which may be called by PM suspend/resume again. | |
fbce23a0 TI |
636 | * |
637 | * Returns zero if successful, or a negative error code. | |
c3aeda62 | 638 | */ |
fbce23a0 | 639 | int snd_hdac_power_down_pm(struct hdac_device *codec) |
c3aeda62 TI |
640 | { |
641 | if (atomic_dec_if_positive(&codec->in_pm) < 0) | |
fbce23a0 TI |
642 | return snd_hdac_power_down(codec); |
643 | return 0; | |
c3aeda62 TI |
644 | } |
645 | EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm); | |
7639a06c TI |
646 | #endif |
647 | ||
78dd5e21 TI |
648 | /** |
649 | * snd_hdac_link_power - Enable/disable the link power for a codec | |
650 | * @codec: the codec object | |
651 | * @bool: enable or disable the link power | |
a5e7e07c ML |
652 | */ |
653 | int snd_hdac_link_power(struct hdac_device *codec, bool enable) | |
654 | { | |
655 | if (!codec->link_power_control) | |
656 | return 0; | |
657 | ||
658 | if (codec->bus->ops->link_power) | |
659 | return codec->bus->ops->link_power(codec->bus, enable); | |
660 | else | |
661 | return -EINVAL; | |
662 | } | |
663 | EXPORT_SYMBOL_GPL(snd_hdac_link_power); | |
664 | ||
7639a06c TI |
665 | /* codec vendor labels */ |
666 | struct hda_vendor_id { | |
667 | unsigned int id; | |
668 | const char *name; | |
669 | }; | |
670 | ||
671 | static struct hda_vendor_id hda_vendor_ids[] = { | |
672 | { 0x1002, "ATI" }, | |
673 | { 0x1013, "Cirrus Logic" }, | |
674 | { 0x1057, "Motorola" }, | |
675 | { 0x1095, "Silicon Image" }, | |
676 | { 0x10de, "Nvidia" }, | |
677 | { 0x10ec, "Realtek" }, | |
678 | { 0x1102, "Creative" }, | |
679 | { 0x1106, "VIA" }, | |
680 | { 0x111d, "IDT" }, | |
681 | { 0x11c1, "LSI" }, | |
682 | { 0x11d4, "Analog Devices" }, | |
683 | { 0x13f6, "C-Media" }, | |
684 | { 0x14f1, "Conexant" }, | |
685 | { 0x17e8, "Chrontel" }, | |
686 | { 0x1854, "LG" }, | |
687 | { 0x1aec, "Wolfson Microelectronics" }, | |
688 | { 0x1af4, "QEMU" }, | |
689 | { 0x434d, "C-Media" }, | |
690 | { 0x8086, "Intel" }, | |
691 | { 0x8384, "SigmaTel" }, | |
692 | {} /* terminator */ | |
693 | }; | |
694 | ||
695 | /* store the codec vendor name */ | |
696 | static int get_codec_vendor_name(struct hdac_device *codec) | |
697 | { | |
698 | const struct hda_vendor_id *c; | |
699 | u16 vendor_id = codec->vendor_id >> 16; | |
700 | ||
701 | for (c = hda_vendor_ids; c->id; c++) { | |
702 | if (c->id == vendor_id) { | |
703 | codec->vendor_name = kstrdup(c->name, GFP_KERNEL); | |
704 | return codec->vendor_name ? 0 : -ENOMEM; | |
705 | } | |
706 | } | |
707 | ||
708 | codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id); | |
709 | return codec->vendor_name ? 0 : -ENOMEM; | |
710 | } | |
b7d023e1 TI |
711 | |
712 | /* | |
713 | * stream formats | |
714 | */ | |
715 | struct hda_rate_tbl { | |
716 | unsigned int hz; | |
717 | unsigned int alsa_bits; | |
718 | unsigned int hda_fmt; | |
719 | }; | |
720 | ||
721 | /* rate = base * mult / div */ | |
722 | #define HDA_RATE(base, mult, div) \ | |
723 | (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \ | |
724 | (((div) - 1) << AC_FMT_DIV_SHIFT)) | |
725 | ||
726 | static struct hda_rate_tbl rate_bits[] = { | |
727 | /* rate in Hz, ALSA rate bitmask, HDA format value */ | |
728 | ||
729 | /* autodetected value used in snd_hda_query_supported_pcm */ | |
730 | { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) }, | |
731 | { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) }, | |
732 | { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) }, | |
733 | { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) }, | |
734 | { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) }, | |
735 | { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) }, | |
736 | { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) }, | |
737 | { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) }, | |
738 | { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) }, | |
739 | { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) }, | |
740 | { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) }, | |
741 | #define AC_PAR_PCM_RATE_BITS 11 | |
742 | /* up to bits 10, 384kHZ isn't supported properly */ | |
743 | ||
744 | /* not autodetected value */ | |
745 | { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) }, | |
746 | ||
747 | { 0 } /* terminator */ | |
748 | }; | |
749 | ||
750 | /** | |
751 | * snd_hdac_calc_stream_format - calculate the format bitset | |
752 | * @rate: the sample rate | |
753 | * @channels: the number of channels | |
754 | * @format: the PCM format (SNDRV_PCM_FORMAT_XXX) | |
755 | * @maxbps: the max. bps | |
756 | * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant) | |
757 | * | |
758 | * Calculate the format bitset from the given rate, channels and th PCM format. | |
759 | * | |
760 | * Return zero if invalid. | |
761 | */ | |
762 | unsigned int snd_hdac_calc_stream_format(unsigned int rate, | |
763 | unsigned int channels, | |
764 | unsigned int format, | |
765 | unsigned int maxbps, | |
766 | unsigned short spdif_ctls) | |
767 | { | |
768 | int i; | |
769 | unsigned int val = 0; | |
770 | ||
771 | for (i = 0; rate_bits[i].hz; i++) | |
772 | if (rate_bits[i].hz == rate) { | |
773 | val = rate_bits[i].hda_fmt; | |
774 | break; | |
775 | } | |
776 | if (!rate_bits[i].hz) | |
777 | return 0; | |
778 | ||
779 | if (channels == 0 || channels > 8) | |
780 | return 0; | |
781 | val |= channels - 1; | |
782 | ||
783 | switch (snd_pcm_format_width(format)) { | |
784 | case 8: | |
785 | val |= AC_FMT_BITS_8; | |
786 | break; | |
787 | case 16: | |
788 | val |= AC_FMT_BITS_16; | |
789 | break; | |
790 | case 20: | |
791 | case 24: | |
792 | case 32: | |
793 | if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE) | |
794 | val |= AC_FMT_BITS_32; | |
795 | else if (maxbps >= 24) | |
796 | val |= AC_FMT_BITS_24; | |
797 | else | |
798 | val |= AC_FMT_BITS_20; | |
799 | break; | |
800 | default: | |
801 | return 0; | |
802 | } | |
803 | ||
804 | if (spdif_ctls & AC_DIG1_NONAUDIO) | |
805 | val |= AC_FMT_TYPE_NON_PCM; | |
806 | ||
807 | return val; | |
808 | } | |
809 | EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format); | |
810 | ||
811 | static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid) | |
812 | { | |
813 | unsigned int val = 0; | |
814 | ||
815 | if (nid != codec->afg && | |
816 | (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) | |
817 | val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM); | |
818 | if (!val || val == -1) | |
819 | val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM); | |
820 | if (!val || val == -1) | |
821 | return 0; | |
822 | return val; | |
823 | } | |
824 | ||
825 | static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid) | |
826 | { | |
827 | unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM); | |
828 | ||
829 | if (!streams || streams == -1) | |
830 | streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM); | |
831 | if (!streams || streams == -1) | |
832 | return 0; | |
833 | return streams; | |
834 | } | |
835 | ||
836 | /** | |
837 | * snd_hdac_query_supported_pcm - query the supported PCM rates and formats | |
838 | * @codec: the codec object | |
839 | * @nid: NID to query | |
840 | * @ratesp: the pointer to store the detected rate bitflags | |
841 | * @formatsp: the pointer to store the detected formats | |
842 | * @bpsp: the pointer to store the detected format widths | |
843 | * | |
844 | * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp | |
845 | * or @bsps argument is ignored. | |
846 | * | |
847 | * Returns 0 if successful, otherwise a negative error code. | |
848 | */ | |
849 | int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, | |
850 | u32 *ratesp, u64 *formatsp, unsigned int *bpsp) | |
851 | { | |
852 | unsigned int i, val, wcaps; | |
853 | ||
854 | wcaps = get_wcaps(codec, nid); | |
855 | val = query_pcm_param(codec, nid); | |
856 | ||
857 | if (ratesp) { | |
858 | u32 rates = 0; | |
859 | for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) { | |
860 | if (val & (1 << i)) | |
861 | rates |= rate_bits[i].alsa_bits; | |
862 | } | |
863 | if (rates == 0) { | |
864 | dev_err(&codec->dev, | |
865 | "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n", | |
866 | nid, val, | |
867 | (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0); | |
868 | return -EIO; | |
869 | } | |
870 | *ratesp = rates; | |
871 | } | |
872 | ||
873 | if (formatsp || bpsp) { | |
874 | u64 formats = 0; | |
875 | unsigned int streams, bps; | |
876 | ||
877 | streams = query_stream_param(codec, nid); | |
878 | if (!streams) | |
879 | return -EIO; | |
880 | ||
881 | bps = 0; | |
882 | if (streams & AC_SUPFMT_PCM) { | |
883 | if (val & AC_SUPPCM_BITS_8) { | |
884 | formats |= SNDRV_PCM_FMTBIT_U8; | |
885 | bps = 8; | |
886 | } | |
887 | if (val & AC_SUPPCM_BITS_16) { | |
888 | formats |= SNDRV_PCM_FMTBIT_S16_LE; | |
889 | bps = 16; | |
890 | } | |
891 | if (wcaps & AC_WCAP_DIGITAL) { | |
892 | if (val & AC_SUPPCM_BITS_32) | |
893 | formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE; | |
894 | if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24)) | |
895 | formats |= SNDRV_PCM_FMTBIT_S32_LE; | |
896 | if (val & AC_SUPPCM_BITS_24) | |
897 | bps = 24; | |
898 | else if (val & AC_SUPPCM_BITS_20) | |
899 | bps = 20; | |
900 | } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24| | |
901 | AC_SUPPCM_BITS_32)) { | |
902 | formats |= SNDRV_PCM_FMTBIT_S32_LE; | |
903 | if (val & AC_SUPPCM_BITS_32) | |
904 | bps = 32; | |
905 | else if (val & AC_SUPPCM_BITS_24) | |
906 | bps = 24; | |
907 | else if (val & AC_SUPPCM_BITS_20) | |
908 | bps = 20; | |
909 | } | |
910 | } | |
911 | #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */ | |
912 | if (streams & AC_SUPFMT_FLOAT32) { | |
913 | formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; | |
914 | if (!bps) | |
915 | bps = 32; | |
916 | } | |
917 | #endif | |
918 | if (streams == AC_SUPFMT_AC3) { | |
919 | /* should be exclusive */ | |
920 | /* temporary hack: we have still no proper support | |
921 | * for the direct AC3 stream... | |
922 | */ | |
923 | formats |= SNDRV_PCM_FMTBIT_U8; | |
924 | bps = 8; | |
925 | } | |
926 | if (formats == 0) { | |
927 | dev_err(&codec->dev, | |
928 | "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n", | |
929 | nid, val, | |
930 | (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0, | |
931 | streams); | |
932 | return -EIO; | |
933 | } | |
934 | if (formatsp) | |
935 | *formatsp = formats; | |
936 | if (bpsp) | |
937 | *bpsp = bps; | |
938 | } | |
939 | ||
940 | return 0; | |
941 | } | |
942 | EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm); | |
943 | ||
944 | /** | |
945 | * snd_hdac_is_supported_format - Check the validity of the format | |
946 | * @codec: the codec object | |
947 | * @nid: NID to check | |
948 | * @format: the HD-audio format value to check | |
949 | * | |
950 | * Check whether the given node supports the format value. | |
951 | * | |
952 | * Returns true if supported, false if not. | |
953 | */ | |
954 | bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, | |
955 | unsigned int format) | |
956 | { | |
957 | int i; | |
958 | unsigned int val = 0, rate, stream; | |
959 | ||
960 | val = query_pcm_param(codec, nid); | |
961 | if (!val) | |
962 | return false; | |
963 | ||
964 | rate = format & 0xff00; | |
965 | for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) | |
966 | if (rate_bits[i].hda_fmt == rate) { | |
967 | if (val & (1 << i)) | |
968 | break; | |
969 | return false; | |
970 | } | |
971 | if (i >= AC_PAR_PCM_RATE_BITS) | |
972 | return false; | |
973 | ||
974 | stream = query_stream_param(codec, nid); | |
975 | if (!stream) | |
976 | return false; | |
977 | ||
978 | if (stream & AC_SUPFMT_PCM) { | |
979 | switch (format & 0xf0) { | |
980 | case 0x00: | |
981 | if (!(val & AC_SUPPCM_BITS_8)) | |
982 | return false; | |
983 | break; | |
984 | case 0x10: | |
985 | if (!(val & AC_SUPPCM_BITS_16)) | |
986 | return false; | |
987 | break; | |
988 | case 0x20: | |
989 | if (!(val & AC_SUPPCM_BITS_20)) | |
990 | return false; | |
991 | break; | |
992 | case 0x30: | |
993 | if (!(val & AC_SUPPCM_BITS_24)) | |
994 | return false; | |
995 | break; | |
996 | case 0x40: | |
997 | if (!(val & AC_SUPPCM_BITS_32)) | |
998 | return false; | |
999 | break; | |
1000 | default: | |
1001 | return false; | |
1002 | } | |
1003 | } else { | |
1004 | /* FIXME: check for float32 and AC3? */ | |
1005 | } | |
1006 | ||
1007 | return true; | |
1008 | } | |
1009 | EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format); | |
1b5e6167 SP |
1010 | |
1011 | static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid, | |
1012 | int flags, unsigned int verb, unsigned int parm) | |
1013 | { | |
1014 | unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); | |
1015 | unsigned int res; | |
1016 | ||
1017 | if (snd_hdac_exec_verb(hdac, cmd, flags, &res)) | |
1018 | return -1; | |
1019 | ||
1020 | return res; | |
1021 | } | |
1022 | ||
1023 | static int codec_write(struct hdac_device *hdac, hda_nid_t nid, | |
1024 | int flags, unsigned int verb, unsigned int parm) | |
1025 | { | |
1026 | unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); | |
1027 | ||
1028 | return snd_hdac_exec_verb(hdac, cmd, flags, NULL); | |
1029 | } | |
1030 | ||
1031 | /** | |
1032 | * snd_hdac_codec_read - send a command and get the response | |
1033 | * @hdac: the HDAC device | |
1034 | * @nid: NID to send the command | |
1035 | * @flags: optional bit flags | |
1036 | * @verb: the verb to send | |
1037 | * @parm: the parameter for the verb | |
1038 | * | |
1039 | * Send a single command and read the corresponding response. | |
1040 | * | |
1041 | * Returns the obtained response value, or -1 for an error. | |
1042 | */ | |
1043 | int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, | |
1044 | int flags, unsigned int verb, unsigned int parm) | |
1045 | { | |
1046 | return codec_read(hdac, nid, flags, verb, parm); | |
1047 | } | |
1048 | EXPORT_SYMBOL_GPL(snd_hdac_codec_read); | |
1049 | ||
1050 | /** | |
1051 | * snd_hdac_codec_write - send a single command without waiting for response | |
1052 | * @hdac: the HDAC device | |
1053 | * @nid: NID to send the command | |
1054 | * @flags: optional bit flags | |
1055 | * @verb: the verb to send | |
1056 | * @parm: the parameter for the verb | |
1057 | * | |
1058 | * Send a single command without waiting for response. | |
1059 | * | |
1060 | * Returns 0 if successful, or a negative error code. | |
1061 | */ | |
1062 | int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, | |
1063 | int flags, unsigned int verb, unsigned int parm) | |
1064 | { | |
1065 | return codec_write(hdac, nid, flags, verb, parm); | |
1066 | } | |
1067 | EXPORT_SYMBOL_GPL(snd_hdac_codec_write); | |
1068 | ||
78dd5e21 TI |
1069 | /** |
1070 | * snd_hdac_check_power_state - check whether the actual power state matches | |
1b5e6167 SP |
1071 | * with the target state |
1072 | * | |
1073 | * @hdac: the HDAC device | |
1074 | * @nid: NID to send the command | |
1075 | * @target_state: target state to check for | |
1076 | * | |
1077 | * Return true if state matches, false if not | |
1078 | */ | |
1079 | bool snd_hdac_check_power_state(struct hdac_device *hdac, | |
1080 | hda_nid_t nid, unsigned int target_state) | |
1081 | { | |
1082 | unsigned int state = codec_read(hdac, nid, 0, | |
1083 | AC_VERB_GET_POWER_STATE, 0); | |
1084 | ||
1085 | if (state & AC_PWRST_ERROR) | |
1086 | return true; | |
1087 | state = (state >> 4) & 0x0f; | |
1088 | return (state == target_state); | |
1089 | } | |
1090 | EXPORT_SYMBOL_GPL(snd_hdac_check_power_state); |