Commit | Line | Data |
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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 | ||
18 | static void setup_fg_nodes(struct hdac_device *codec); | |
19 | static int get_codec_vendor_name(struct hdac_device *codec); | |
20 | ||
21 | static 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 | */ | |
40 | int 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 | ||
64 | err = snd_hdac_bus_add_device(bus, codec); | |
65 | if (err < 0) | |
66 | goto error; | |
67 | ||
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 | ||
9780ded3 | 93 | err = snd_hdac_refresh_widgets(codec, false); |
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 | } | |
120 | EXPORT_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 | */ | |
126 | void 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 | } | |
133 | EXPORT_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 | */ | |
139 | int 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); |
3256be65 TI |
149 | if (err < 0) { |
150 | device_del(&codec->dev); | |
151 | return err; | |
152 | } | |
153 | ||
154 | return 0; | |
155 | } | |
156 | EXPORT_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 | */ | |
162 | void 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); |
3256be65 | 168 | device_del(&codec->dev); |
eb8d0eaa | 169 | snd_hdac_bus_remove_device(codec->bus, codec); |
3256be65 TI |
170 | } |
171 | } | |
172 | EXPORT_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 | */ | |
181 | int 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 | } | |
194 | EXPORT_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 | */ | |
204 | int 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 | } | |
209 | EXPORT_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 | */ | |
221 | unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid, | |
222 | unsigned int verb, unsigned int parm) | |
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 | } | |
240 | EXPORT_SYMBOL_GPL(snd_hdac_make_cmd); | |
241 | ||
05852448 TI |
242 | /** |
243 | * snd_hdac_exec_verb - execute an encoded verb | |
244 | * @codec: the codec object | |
245 | * @cmd: encoded verb to execute | |
246 | * @flags: optional flags, pass zero for default | |
247 | * @res: the pointer to store the result, NULL if running async | |
248 | * | |
249 | * Returns zero if successful, or a negative error code. | |
250 | * | |
251 | * This calls the exec_verb op when set in hdac_codec. If not, | |
252 | * call the default snd_hdac_bus_exec_verb(). | |
253 | */ | |
254 | int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd, | |
255 | unsigned int flags, unsigned int *res) | |
256 | { | |
257 | if (codec->exec_verb) | |
258 | return codec->exec_verb(codec, cmd, flags, res); | |
259 | return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res); | |
260 | } | |
261 | EXPORT_SYMBOL_GPL(snd_hdac_exec_verb); | |
262 | ||
263 | ||
7639a06c TI |
264 | /** |
265 | * snd_hdac_read - execute a verb | |
266 | * @codec: the codec object | |
267 | * @nid: NID to execute a verb | |
268 | * @verb: verb to execute | |
269 | * @parm: parameter for a verb | |
270 | * @res: the pointer to store the result, NULL if running async | |
271 | * | |
272 | * Returns zero if successful, or a negative error code. | |
273 | */ | |
274 | int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, | |
275 | unsigned int verb, unsigned int parm, unsigned int *res) | |
276 | { | |
277 | unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm); | |
278 | ||
05852448 | 279 | return snd_hdac_exec_verb(codec, cmd, 0, res); |
7639a06c TI |
280 | } |
281 | EXPORT_SYMBOL_GPL(snd_hdac_read); | |
282 | ||
283 | /** | |
01ed3c06 | 284 | * _snd_hdac_read_parm - read a parmeter |
7639a06c | 285 | * |
01ed3c06 | 286 | * This function returns zero or an error unlike snd_hdac_read_parm(). |
7639a06c | 287 | */ |
01ed3c06 TI |
288 | int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm, |
289 | unsigned int *res) | |
7639a06c | 290 | { |
01ed3c06 | 291 | unsigned int cmd; |
7639a06c | 292 | |
01ed3c06 TI |
293 | cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm; |
294 | return snd_hdac_regmap_read_raw(codec, cmd, res); | |
7639a06c | 295 | } |
01ed3c06 | 296 | EXPORT_SYMBOL_GPL(_snd_hdac_read_parm); |
7639a06c | 297 | |
9ba17b4d TI |
298 | /** |
299 | * snd_hdac_read_parm_uncached - read a codec parameter without caching | |
7639a06c TI |
300 | * @codec: the codec object |
301 | * @nid: NID to read a parameter | |
302 | * @parm: parameter to read | |
303 | * | |
304 | * Returns -1 for error. If you need to distinguish the error more | |
305 | * strictly, use snd_hdac_read() directly. | |
306 | */ | |
9ba17b4d TI |
307 | int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid, |
308 | int parm) | |
7639a06c | 309 | { |
3194ed49 | 310 | unsigned int cmd, val; |
7639a06c | 311 | |
3194ed49 TI |
312 | cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm; |
313 | if (snd_hdac_regmap_read_raw_uncached(codec, cmd, &val) < 0) | |
314 | return -1; | |
7639a06c TI |
315 | return val; |
316 | } | |
9ba17b4d TI |
317 | EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached); |
318 | ||
faa75f8a TI |
319 | /** |
320 | * snd_hdac_override_parm - override read-only parameters | |
321 | * @codec: the codec object | |
322 | * @nid: NID for the parameter | |
323 | * @parm: the parameter to change | |
324 | * @val: the parameter value to overwrite | |
325 | */ | |
326 | int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid, | |
327 | unsigned int parm, unsigned int val) | |
328 | { | |
329 | unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm; | |
330 | int err; | |
331 | ||
332 | if (!codec->regmap) | |
333 | return -EINVAL; | |
334 | ||
335 | codec->caps_overwriting = true; | |
336 | err = snd_hdac_regmap_write_raw(codec, verb, val); | |
337 | codec->caps_overwriting = false; | |
338 | return err; | |
339 | } | |
340 | EXPORT_SYMBOL_GPL(snd_hdac_override_parm); | |
7639a06c TI |
341 | |
342 | /** | |
343 | * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes | |
344 | * @codec: the codec object | |
345 | * @nid: NID to inspect | |
346 | * @start_id: the pointer to store the starting NID | |
347 | * | |
348 | * Returns the number of subtree nodes or zero if not found. | |
9ba17b4d | 349 | * This function reads parameters always without caching. |
7639a06c TI |
350 | */ |
351 | int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid, | |
352 | hda_nid_t *start_id) | |
353 | { | |
354 | unsigned int parm; | |
355 | ||
9ba17b4d | 356 | parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT); |
7639a06c TI |
357 | if (parm == -1) { |
358 | *start_id = 0; | |
359 | return 0; | |
360 | } | |
361 | *start_id = (parm >> 16) & 0x7fff; | |
362 | return (int)(parm & 0x7fff); | |
363 | } | |
364 | EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes); | |
365 | ||
366 | /* | |
367 | * look for an AFG and MFG nodes | |
368 | */ | |
369 | static void setup_fg_nodes(struct hdac_device *codec) | |
370 | { | |
371 | int i, total_nodes, function_id; | |
372 | hda_nid_t nid; | |
373 | ||
374 | total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid); | |
375 | for (i = 0; i < total_nodes; i++, nid++) { | |
376 | function_id = snd_hdac_read_parm(codec, nid, | |
377 | AC_PAR_FUNCTION_TYPE); | |
378 | switch (function_id & 0xff) { | |
379 | case AC_GRP_AUDIO_FUNCTION: | |
380 | codec->afg = nid; | |
381 | codec->afg_function_id = function_id & 0xff; | |
382 | codec->afg_unsol = (function_id >> 8) & 1; | |
383 | break; | |
384 | case AC_GRP_MODEM_FUNCTION: | |
385 | codec->mfg = nid; | |
386 | codec->mfg_function_id = function_id & 0xff; | |
387 | codec->mfg_unsol = (function_id >> 8) & 1; | |
388 | break; | |
389 | default: | |
390 | break; | |
391 | } | |
392 | } | |
393 | } | |
394 | ||
395 | /** | |
396 | * snd_hdac_refresh_widgets - Reset the widget start/end nodes | |
397 | * @codec: the codec object | |
9780ded3 | 398 | * @sysfs: re-initialize sysfs tree, too |
7639a06c | 399 | */ |
9780ded3 | 400 | int snd_hdac_refresh_widgets(struct hdac_device *codec, bool sysfs) |
7639a06c TI |
401 | { |
402 | hda_nid_t start_nid; | |
9780ded3 | 403 | int nums, err; |
7639a06c TI |
404 | |
405 | nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid); | |
406 | if (!start_nid || nums <= 0 || nums >= 0xff) { | |
407 | dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n", | |
408 | codec->afg); | |
409 | return -EINVAL; | |
410 | } | |
411 | ||
9780ded3 | 412 | if (sysfs) { |
ed180abb | 413 | mutex_lock(&codec->widget_lock); |
9780ded3 | 414 | err = hda_widget_sysfs_reinit(codec, start_nid, nums); |
ed180abb | 415 | mutex_unlock(&codec->widget_lock); |
9780ded3 TI |
416 | if (err < 0) |
417 | return err; | |
418 | } | |
419 | ||
7639a06c TI |
420 | codec->num_nodes = nums; |
421 | codec->start_nid = start_nid; | |
422 | codec->end_nid = start_nid + nums; | |
423 | return 0; | |
424 | } | |
425 | EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets); | |
426 | ||
427 | /* return CONNLIST_LEN parameter of the given widget */ | |
428 | static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid) | |
429 | { | |
430 | unsigned int wcaps = get_wcaps(codec, nid); | |
431 | unsigned int parm; | |
432 | ||
433 | if (!(wcaps & AC_WCAP_CONN_LIST) && | |
434 | get_wcaps_type(wcaps) != AC_WID_VOL_KNB) | |
435 | return 0; | |
436 | ||
437 | parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN); | |
438 | if (parm == -1) | |
439 | parm = 0; | |
440 | return parm; | |
441 | } | |
442 | ||
443 | /** | |
444 | * snd_hdac_get_connections - get a widget connection list | |
445 | * @codec: the codec object | |
446 | * @nid: NID | |
447 | * @conn_list: the array to store the results, can be NULL | |
448 | * @max_conns: the max size of the given array | |
449 | * | |
450 | * Returns the number of connected widgets, zero for no connection, or a | |
451 | * negative error code. When the number of elements don't fit with the | |
452 | * given array size, it returns -ENOSPC. | |
453 | * | |
454 | * When @conn_list is NULL, it just checks the number of connections. | |
455 | */ | |
456 | int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, | |
457 | hda_nid_t *conn_list, int max_conns) | |
458 | { | |
459 | unsigned int parm; | |
460 | int i, conn_len, conns, err; | |
461 | unsigned int shift, num_elems, mask; | |
462 | hda_nid_t prev_nid; | |
463 | int null_count = 0; | |
464 | ||
465 | parm = get_num_conns(codec, nid); | |
466 | if (!parm) | |
467 | return 0; | |
468 | ||
469 | if (parm & AC_CLIST_LONG) { | |
470 | /* long form */ | |
471 | shift = 16; | |
472 | num_elems = 2; | |
473 | } else { | |
474 | /* short form */ | |
475 | shift = 8; | |
476 | num_elems = 4; | |
477 | } | |
478 | conn_len = parm & AC_CLIST_LENGTH; | |
479 | mask = (1 << (shift-1)) - 1; | |
480 | ||
481 | if (!conn_len) | |
482 | return 0; /* no connection */ | |
483 | ||
484 | if (conn_len == 1) { | |
485 | /* single connection */ | |
486 | err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0, | |
487 | &parm); | |
488 | if (err < 0) | |
489 | return err; | |
490 | if (conn_list) | |
491 | conn_list[0] = parm & mask; | |
492 | return 1; | |
493 | } | |
494 | ||
495 | /* multi connection */ | |
496 | conns = 0; | |
497 | prev_nid = 0; | |
498 | for (i = 0; i < conn_len; i++) { | |
499 | int range_val; | |
500 | hda_nid_t val, n; | |
501 | ||
502 | if (i % num_elems == 0) { | |
503 | err = snd_hdac_read(codec, nid, | |
504 | AC_VERB_GET_CONNECT_LIST, i, | |
505 | &parm); | |
506 | if (err < 0) | |
507 | return -EIO; | |
508 | } | |
509 | range_val = !!(parm & (1 << (shift-1))); /* ranges */ | |
510 | val = parm & mask; | |
511 | if (val == 0 && null_count++) { /* no second chance */ | |
512 | dev_dbg(&codec->dev, | |
513 | "invalid CONNECT_LIST verb %x[%i]:%x\n", | |
514 | nid, i, parm); | |
515 | return 0; | |
516 | } | |
517 | parm >>= shift; | |
518 | if (range_val) { | |
519 | /* ranges between the previous and this one */ | |
520 | if (!prev_nid || prev_nid >= val) { | |
521 | dev_warn(&codec->dev, | |
522 | "invalid dep_range_val %x:%x\n", | |
523 | prev_nid, val); | |
524 | continue; | |
525 | } | |
526 | for (n = prev_nid + 1; n <= val; n++) { | |
527 | if (conn_list) { | |
528 | if (conns >= max_conns) | |
529 | return -ENOSPC; | |
530 | conn_list[conns] = n; | |
531 | } | |
532 | conns++; | |
533 | } | |
534 | } else { | |
535 | if (conn_list) { | |
536 | if (conns >= max_conns) | |
537 | return -ENOSPC; | |
538 | conn_list[conns] = val; | |
539 | } | |
540 | conns++; | |
541 | } | |
542 | prev_nid = val; | |
543 | } | |
544 | return conns; | |
545 | } | |
546 | EXPORT_SYMBOL_GPL(snd_hdac_get_connections); | |
547 | ||
548 | #ifdef CONFIG_PM | |
549 | /** | |
664c7155 | 550 | * snd_hdac_power_up - power up the codec |
7639a06c | 551 | * @codec: the codec object |
664c7155 TI |
552 | * |
553 | * This function calls the runtime PM helper to power up the given codec. | |
554 | * Unlike snd_hdac_power_up_pm(), you should call this only for the code | |
555 | * path that isn't included in PM path. Otherwise it gets stuck. | |
fbce23a0 TI |
556 | * |
557 | * Returns zero if successful, or a negative error code. | |
7639a06c | 558 | */ |
fbce23a0 | 559 | int snd_hdac_power_up(struct hdac_device *codec) |
7639a06c | 560 | { |
fbce23a0 | 561 | return pm_runtime_get_sync(&codec->dev); |
7639a06c TI |
562 | } |
563 | EXPORT_SYMBOL_GPL(snd_hdac_power_up); | |
564 | ||
565 | /** | |
664c7155 | 566 | * snd_hdac_power_down - power down the codec |
7639a06c | 567 | * @codec: the codec object |
fbce23a0 TI |
568 | * |
569 | * Returns zero if successful, or a negative error code. | |
7639a06c | 570 | */ |
fbce23a0 | 571 | int snd_hdac_power_down(struct hdac_device *codec) |
7639a06c TI |
572 | { |
573 | struct device *dev = &codec->dev; | |
574 | ||
7639a06c | 575 | pm_runtime_mark_last_busy(dev); |
fbce23a0 | 576 | return pm_runtime_put_autosuspend(dev); |
7639a06c TI |
577 | } |
578 | EXPORT_SYMBOL_GPL(snd_hdac_power_down); | |
c3aeda62 TI |
579 | |
580 | /** | |
581 | * snd_hdac_power_up_pm - power up the codec | |
582 | * @codec: the codec object | |
583 | * | |
584 | * This function can be called in a recursive code path like init code | |
585 | * which may be called by PM suspend/resume again. OTOH, if a power-up | |
586 | * call must wake up the sleeper (e.g. in a kctl callback), use | |
587 | * snd_hdac_power_up() instead. | |
fbce23a0 TI |
588 | * |
589 | * Returns zero if successful, or a negative error code. | |
c3aeda62 | 590 | */ |
fbce23a0 | 591 | int snd_hdac_power_up_pm(struct hdac_device *codec) |
c3aeda62 TI |
592 | { |
593 | if (!atomic_inc_not_zero(&codec->in_pm)) | |
fbce23a0 TI |
594 | return snd_hdac_power_up(codec); |
595 | return 0; | |
c3aeda62 TI |
596 | } |
597 | EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm); | |
598 | ||
fc4f000b TI |
599 | /* like snd_hdac_power_up_pm(), but only increment the pm count when |
600 | * already powered up. Returns -1 if not powered up, 1 if incremented | |
601 | * or 0 if unchanged. Only used in hdac_regmap.c | |
602 | */ | |
603 | int snd_hdac_keep_power_up(struct hdac_device *codec) | |
604 | { | |
605 | if (!atomic_inc_not_zero(&codec->in_pm)) { | |
606 | int ret = pm_runtime_get_if_in_use(&codec->dev); | |
607 | if (!ret) | |
608 | return -1; | |
609 | if (ret < 0) | |
610 | return 0; | |
611 | } | |
612 | return 1; | |
613 | } | |
614 | ||
c3aeda62 TI |
615 | /** |
616 | * snd_hdac_power_down_pm - power down the codec | |
617 | * @codec: the codec object | |
618 | * | |
619 | * Like snd_hdac_power_up_pm(), this function is used in a recursive | |
620 | * code path like init code which may be called by PM suspend/resume again. | |
fbce23a0 TI |
621 | * |
622 | * Returns zero if successful, or a negative error code. | |
c3aeda62 | 623 | */ |
fbce23a0 | 624 | int snd_hdac_power_down_pm(struct hdac_device *codec) |
c3aeda62 TI |
625 | { |
626 | if (atomic_dec_if_positive(&codec->in_pm) < 0) | |
fbce23a0 TI |
627 | return snd_hdac_power_down(codec); |
628 | return 0; | |
c3aeda62 TI |
629 | } |
630 | EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm); | |
7639a06c TI |
631 | #endif |
632 | ||
633 | /* codec vendor labels */ | |
634 | struct hda_vendor_id { | |
635 | unsigned int id; | |
636 | const char *name; | |
637 | }; | |
638 | ||
639 | static struct hda_vendor_id hda_vendor_ids[] = { | |
640 | { 0x1002, "ATI" }, | |
641 | { 0x1013, "Cirrus Logic" }, | |
642 | { 0x1057, "Motorola" }, | |
643 | { 0x1095, "Silicon Image" }, | |
644 | { 0x10de, "Nvidia" }, | |
645 | { 0x10ec, "Realtek" }, | |
646 | { 0x1102, "Creative" }, | |
647 | { 0x1106, "VIA" }, | |
648 | { 0x111d, "IDT" }, | |
649 | { 0x11c1, "LSI" }, | |
650 | { 0x11d4, "Analog Devices" }, | |
651 | { 0x13f6, "C-Media" }, | |
652 | { 0x14f1, "Conexant" }, | |
653 | { 0x17e8, "Chrontel" }, | |
654 | { 0x1854, "LG" }, | |
655 | { 0x1aec, "Wolfson Microelectronics" }, | |
656 | { 0x1af4, "QEMU" }, | |
657 | { 0x434d, "C-Media" }, | |
658 | { 0x8086, "Intel" }, | |
659 | { 0x8384, "SigmaTel" }, | |
660 | {} /* terminator */ | |
661 | }; | |
662 | ||
663 | /* store the codec vendor name */ | |
664 | static int get_codec_vendor_name(struct hdac_device *codec) | |
665 | { | |
666 | const struct hda_vendor_id *c; | |
667 | u16 vendor_id = codec->vendor_id >> 16; | |
668 | ||
669 | for (c = hda_vendor_ids; c->id; c++) { | |
670 | if (c->id == vendor_id) { | |
671 | codec->vendor_name = kstrdup(c->name, GFP_KERNEL); | |
672 | return codec->vendor_name ? 0 : -ENOMEM; | |
673 | } | |
674 | } | |
675 | ||
676 | codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id); | |
677 | return codec->vendor_name ? 0 : -ENOMEM; | |
678 | } | |
b7d023e1 TI |
679 | |
680 | /* | |
681 | * stream formats | |
682 | */ | |
683 | struct hda_rate_tbl { | |
684 | unsigned int hz; | |
685 | unsigned int alsa_bits; | |
686 | unsigned int hda_fmt; | |
687 | }; | |
688 | ||
689 | /* rate = base * mult / div */ | |
690 | #define HDA_RATE(base, mult, div) \ | |
691 | (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \ | |
692 | (((div) - 1) << AC_FMT_DIV_SHIFT)) | |
693 | ||
694 | static struct hda_rate_tbl rate_bits[] = { | |
695 | /* rate in Hz, ALSA rate bitmask, HDA format value */ | |
696 | ||
697 | /* autodetected value used in snd_hda_query_supported_pcm */ | |
698 | { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) }, | |
699 | { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) }, | |
700 | { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) }, | |
701 | { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) }, | |
702 | { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) }, | |
703 | { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) }, | |
704 | { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) }, | |
705 | { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) }, | |
706 | { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) }, | |
707 | { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) }, | |
708 | { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) }, | |
709 | #define AC_PAR_PCM_RATE_BITS 11 | |
710 | /* up to bits 10, 384kHZ isn't supported properly */ | |
711 | ||
712 | /* not autodetected value */ | |
713 | { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) }, | |
714 | ||
715 | { 0 } /* terminator */ | |
716 | }; | |
717 | ||
718 | /** | |
719 | * snd_hdac_calc_stream_format - calculate the format bitset | |
720 | * @rate: the sample rate | |
721 | * @channels: the number of channels | |
722 | * @format: the PCM format (SNDRV_PCM_FORMAT_XXX) | |
723 | * @maxbps: the max. bps | |
724 | * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant) | |
725 | * | |
726 | * Calculate the format bitset from the given rate, channels and th PCM format. | |
727 | * | |
728 | * Return zero if invalid. | |
729 | */ | |
730 | unsigned int snd_hdac_calc_stream_format(unsigned int rate, | |
731 | unsigned int channels, | |
a6ea5fe9 | 732 | snd_pcm_format_t format, |
b7d023e1 TI |
733 | unsigned int maxbps, |
734 | unsigned short spdif_ctls) | |
735 | { | |
736 | int i; | |
737 | unsigned int val = 0; | |
738 | ||
739 | for (i = 0; rate_bits[i].hz; i++) | |
740 | if (rate_bits[i].hz == rate) { | |
741 | val = rate_bits[i].hda_fmt; | |
742 | break; | |
743 | } | |
744 | if (!rate_bits[i].hz) | |
745 | return 0; | |
746 | ||
747 | if (channels == 0 || channels > 8) | |
748 | return 0; | |
749 | val |= channels - 1; | |
750 | ||
751 | switch (snd_pcm_format_width(format)) { | |
752 | case 8: | |
753 | val |= AC_FMT_BITS_8; | |
754 | break; | |
755 | case 16: | |
756 | val |= AC_FMT_BITS_16; | |
757 | break; | |
758 | case 20: | |
759 | case 24: | |
760 | case 32: | |
761 | if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE) | |
762 | val |= AC_FMT_BITS_32; | |
763 | else if (maxbps >= 24) | |
764 | val |= AC_FMT_BITS_24; | |
765 | else | |
766 | val |= AC_FMT_BITS_20; | |
767 | break; | |
768 | default: | |
769 | return 0; | |
770 | } | |
771 | ||
772 | if (spdif_ctls & AC_DIG1_NONAUDIO) | |
773 | val |= AC_FMT_TYPE_NON_PCM; | |
774 | ||
775 | return val; | |
776 | } | |
777 | EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format); | |
778 | ||
779 | static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid) | |
780 | { | |
781 | unsigned int val = 0; | |
782 | ||
783 | if (nid != codec->afg && | |
784 | (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) | |
785 | val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM); | |
786 | if (!val || val == -1) | |
787 | val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM); | |
788 | if (!val || val == -1) | |
789 | return 0; | |
790 | return val; | |
791 | } | |
792 | ||
793 | static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid) | |
794 | { | |
795 | unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM); | |
796 | ||
797 | if (!streams || streams == -1) | |
798 | streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM); | |
799 | if (!streams || streams == -1) | |
800 | return 0; | |
801 | return streams; | |
802 | } | |
803 | ||
804 | /** | |
805 | * snd_hdac_query_supported_pcm - query the supported PCM rates and formats | |
806 | * @codec: the codec object | |
807 | * @nid: NID to query | |
808 | * @ratesp: the pointer to store the detected rate bitflags | |
809 | * @formatsp: the pointer to store the detected formats | |
810 | * @bpsp: the pointer to store the detected format widths | |
811 | * | |
812 | * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp | |
813 | * or @bsps argument is ignored. | |
814 | * | |
815 | * Returns 0 if successful, otherwise a negative error code. | |
816 | */ | |
817 | int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, | |
818 | u32 *ratesp, u64 *formatsp, unsigned int *bpsp) | |
819 | { | |
820 | unsigned int i, val, wcaps; | |
821 | ||
822 | wcaps = get_wcaps(codec, nid); | |
823 | val = query_pcm_param(codec, nid); | |
824 | ||
825 | if (ratesp) { | |
826 | u32 rates = 0; | |
827 | for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) { | |
828 | if (val & (1 << i)) | |
829 | rates |= rate_bits[i].alsa_bits; | |
830 | } | |
831 | if (rates == 0) { | |
832 | dev_err(&codec->dev, | |
833 | "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n", | |
834 | nid, val, | |
835 | (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0); | |
836 | return -EIO; | |
837 | } | |
838 | *ratesp = rates; | |
839 | } | |
840 | ||
841 | if (formatsp || bpsp) { | |
842 | u64 formats = 0; | |
843 | unsigned int streams, bps; | |
844 | ||
845 | streams = query_stream_param(codec, nid); | |
846 | if (!streams) | |
847 | return -EIO; | |
848 | ||
849 | bps = 0; | |
850 | if (streams & AC_SUPFMT_PCM) { | |
851 | if (val & AC_SUPPCM_BITS_8) { | |
852 | formats |= SNDRV_PCM_FMTBIT_U8; | |
853 | bps = 8; | |
854 | } | |
855 | if (val & AC_SUPPCM_BITS_16) { | |
856 | formats |= SNDRV_PCM_FMTBIT_S16_LE; | |
857 | bps = 16; | |
858 | } | |
859 | if (wcaps & AC_WCAP_DIGITAL) { | |
860 | if (val & AC_SUPPCM_BITS_32) | |
861 | formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE; | |
862 | if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24)) | |
863 | formats |= SNDRV_PCM_FMTBIT_S32_LE; | |
864 | if (val & AC_SUPPCM_BITS_24) | |
865 | bps = 24; | |
866 | else if (val & AC_SUPPCM_BITS_20) | |
867 | bps = 20; | |
868 | } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24| | |
869 | AC_SUPPCM_BITS_32)) { | |
870 | formats |= SNDRV_PCM_FMTBIT_S32_LE; | |
871 | if (val & AC_SUPPCM_BITS_32) | |
872 | bps = 32; | |
873 | else if (val & AC_SUPPCM_BITS_24) | |
874 | bps = 24; | |
875 | else if (val & AC_SUPPCM_BITS_20) | |
876 | bps = 20; | |
877 | } | |
878 | } | |
879 | #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */ | |
880 | if (streams & AC_SUPFMT_FLOAT32) { | |
881 | formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; | |
882 | if (!bps) | |
883 | bps = 32; | |
884 | } | |
885 | #endif | |
886 | if (streams == AC_SUPFMT_AC3) { | |
887 | /* should be exclusive */ | |
888 | /* temporary hack: we have still no proper support | |
889 | * for the direct AC3 stream... | |
890 | */ | |
891 | formats |= SNDRV_PCM_FMTBIT_U8; | |
892 | bps = 8; | |
893 | } | |
894 | if (formats == 0) { | |
895 | dev_err(&codec->dev, | |
896 | "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n", | |
897 | nid, val, | |
898 | (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0, | |
899 | streams); | |
900 | return -EIO; | |
901 | } | |
902 | if (formatsp) | |
903 | *formatsp = formats; | |
904 | if (bpsp) | |
905 | *bpsp = bps; | |
906 | } | |
907 | ||
908 | return 0; | |
909 | } | |
910 | EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm); | |
911 | ||
912 | /** | |
913 | * snd_hdac_is_supported_format - Check the validity of the format | |
914 | * @codec: the codec object | |
915 | * @nid: NID to check | |
916 | * @format: the HD-audio format value to check | |
917 | * | |
918 | * Check whether the given node supports the format value. | |
919 | * | |
920 | * Returns true if supported, false if not. | |
921 | */ | |
922 | bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, | |
923 | unsigned int format) | |
924 | { | |
925 | int i; | |
926 | unsigned int val = 0, rate, stream; | |
927 | ||
928 | val = query_pcm_param(codec, nid); | |
929 | if (!val) | |
930 | return false; | |
931 | ||
932 | rate = format & 0xff00; | |
933 | for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) | |
934 | if (rate_bits[i].hda_fmt == rate) { | |
935 | if (val & (1 << i)) | |
936 | break; | |
937 | return false; | |
938 | } | |
939 | if (i >= AC_PAR_PCM_RATE_BITS) | |
940 | return false; | |
941 | ||
942 | stream = query_stream_param(codec, nid); | |
943 | if (!stream) | |
944 | return false; | |
945 | ||
946 | if (stream & AC_SUPFMT_PCM) { | |
947 | switch (format & 0xf0) { | |
948 | case 0x00: | |
949 | if (!(val & AC_SUPPCM_BITS_8)) | |
950 | return false; | |
951 | break; | |
952 | case 0x10: | |
953 | if (!(val & AC_SUPPCM_BITS_16)) | |
954 | return false; | |
955 | break; | |
956 | case 0x20: | |
957 | if (!(val & AC_SUPPCM_BITS_20)) | |
958 | return false; | |
959 | break; | |
960 | case 0x30: | |
961 | if (!(val & AC_SUPPCM_BITS_24)) | |
962 | return false; | |
963 | break; | |
964 | case 0x40: | |
965 | if (!(val & AC_SUPPCM_BITS_32)) | |
966 | return false; | |
967 | break; | |
968 | default: | |
969 | return false; | |
970 | } | |
971 | } else { | |
972 | /* FIXME: check for float32 and AC3? */ | |
973 | } | |
974 | ||
975 | return true; | |
976 | } | |
977 | EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format); | |
1b5e6167 SP |
978 | |
979 | static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid, | |
980 | int flags, unsigned int verb, unsigned int parm) | |
981 | { | |
982 | unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); | |
983 | unsigned int res; | |
984 | ||
985 | if (snd_hdac_exec_verb(hdac, cmd, flags, &res)) | |
986 | return -1; | |
987 | ||
988 | return res; | |
989 | } | |
990 | ||
991 | static int codec_write(struct hdac_device *hdac, hda_nid_t nid, | |
992 | int flags, unsigned int verb, unsigned int parm) | |
993 | { | |
994 | unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); | |
995 | ||
996 | return snd_hdac_exec_verb(hdac, cmd, flags, NULL); | |
997 | } | |
998 | ||
999 | /** | |
1000 | * snd_hdac_codec_read - send a command and get the response | |
1001 | * @hdac: the HDAC device | |
1002 | * @nid: NID to send the command | |
1003 | * @flags: optional bit flags | |
1004 | * @verb: the verb to send | |
1005 | * @parm: the parameter for the verb | |
1006 | * | |
1007 | * Send a single command and read the corresponding response. | |
1008 | * | |
1009 | * Returns the obtained response value, or -1 for an error. | |
1010 | */ | |
1011 | int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, | |
1012 | int flags, unsigned int verb, unsigned int parm) | |
1013 | { | |
1014 | return codec_read(hdac, nid, flags, verb, parm); | |
1015 | } | |
1016 | EXPORT_SYMBOL_GPL(snd_hdac_codec_read); | |
1017 | ||
1018 | /** | |
1019 | * snd_hdac_codec_write - send a single command without waiting for response | |
1020 | * @hdac: the HDAC device | |
1021 | * @nid: NID to send the command | |
1022 | * @flags: optional bit flags | |
1023 | * @verb: the verb to send | |
1024 | * @parm: the parameter for the verb | |
1025 | * | |
1026 | * Send a single command without waiting for response. | |
1027 | * | |
1028 | * Returns 0 if successful, or a negative error code. | |
1029 | */ | |
1030 | int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, | |
1031 | int flags, unsigned int verb, unsigned int parm) | |
1032 | { | |
1033 | return codec_write(hdac, nid, flags, verb, parm); | |
1034 | } | |
1035 | EXPORT_SYMBOL_GPL(snd_hdac_codec_write); | |
1036 | ||
78dd5e21 TI |
1037 | /** |
1038 | * snd_hdac_check_power_state - check whether the actual power state matches | |
1b5e6167 SP |
1039 | * with the target state |
1040 | * | |
1041 | * @hdac: the HDAC device | |
1042 | * @nid: NID to send the command | |
1043 | * @target_state: target state to check for | |
1044 | * | |
1045 | * Return true if state matches, false if not | |
1046 | */ | |
1047 | bool snd_hdac_check_power_state(struct hdac_device *hdac, | |
1048 | hda_nid_t nid, unsigned int target_state) | |
1049 | { | |
1050 | unsigned int state = codec_read(hdac, nid, 0, | |
1051 | AC_VERB_GET_POWER_STATE, 0); | |
1052 | ||
1053 | if (state & AC_PWRST_ERROR) | |
1054 | return true; | |
1055 | state = (state >> 4) & 0x0f; | |
1056 | return (state == target_state); | |
1057 | } | |
1058 | EXPORT_SYMBOL_GPL(snd_hdac_check_power_state); | |
09787492 AK |
1059 | /** |
1060 | * snd_hdac_sync_power_state - wait until actual power state matches | |
1061 | * with the target state | |
1062 | * | |
1063 | * @hdac: the HDAC device | |
1064 | * @nid: NID to send the command | |
1065 | * @target_state: target state to check for | |
1066 | * | |
1067 | * Return power state or PS_ERROR if codec rejects GET verb. | |
1068 | */ | |
1069 | unsigned int snd_hdac_sync_power_state(struct hdac_device *codec, | |
1070 | hda_nid_t nid, unsigned int power_state) | |
1071 | { | |
1072 | unsigned long end_time = jiffies + msecs_to_jiffies(500); | |
1073 | unsigned int state, actual_state, count; | |
1074 | ||
1075 | for (count = 0; count < 500; count++) { | |
1076 | state = snd_hdac_codec_read(codec, nid, 0, | |
1077 | AC_VERB_GET_POWER_STATE, 0); | |
1078 | if (state & AC_PWRST_ERROR) { | |
1079 | msleep(20); | |
1080 | break; | |
1081 | } | |
1082 | actual_state = (state >> 4) & 0x0f; | |
1083 | if (actual_state == power_state) | |
1084 | break; | |
1085 | if (time_after_eq(jiffies, end_time)) | |
1086 | break; | |
1087 | /* wait until the codec reachs to the target state */ | |
1088 | msleep(1); | |
1089 | } | |
1090 | return state; | |
1091 | } | |
1092 | EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state); |