1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Regmap support for HD-audio verbs |
4 | * |
5 | * A virtual register is translated to one or more hda verbs for write, |
6 | * vice versa for read. |
7 | * |
8 | * A few limitations: |
9 | * - Provided for not all verbs but only subset standard non-volatile verbs. |
10 | * - For reading, only AC_VERB_GET_* variants can be used. |
11 | * - For writing, mapped to the *corresponding* AC_VERB_SET_* variants, |
12 | * so can't handle asymmetric verbs for read and write |
13 | */ |
14 | |
15 | #include <linux/slab.h> |
16 | #include <linux/device.h> |
17 | #include <linux/regmap.h> |
18 | #include <linux/export.h> |
19 | #include <linux/pm.h> |
20 | #include <sound/core.h> |
21 | #include <sound/hdaudio.h> |
22 | #include <sound/hda_regmap.h> |
23 | #include "local.h" |
24 | |
25 | static int codec_pm_lock(struct hdac_device *codec) |
26 | { |
27 | return snd_hdac_keep_power_up(codec); |
28 | } |
29 | |
30 | static void codec_pm_unlock(struct hdac_device *codec, int lock) |
31 | { |
32 | if (lock == 1) |
33 | snd_hdac_power_down_pm(codec); |
34 | } |
35 | |
36 | #define get_verb(reg) (((reg) >> 8) & 0xfff) |
37 | |
38 | static bool hda_volatile_reg(struct device *dev, unsigned int reg) |
39 | { |
40 | struct hdac_device *codec = dev_to_hdac_dev(dev); |
41 | unsigned int verb = get_verb(reg); |
42 | |
43 | switch (verb) { |
44 | case AC_VERB_GET_PROC_COEF: |
45 | return !codec->cache_coef; |
46 | case AC_VERB_GET_COEF_INDEX: |
47 | case AC_VERB_GET_PROC_STATE: |
48 | case AC_VERB_GET_POWER_STATE: |
49 | case AC_VERB_GET_PIN_SENSE: |
50 | case AC_VERB_GET_HDMI_DIP_SIZE: |
51 | case AC_VERB_GET_HDMI_ELDD: |
52 | case AC_VERB_GET_HDMI_DIP_INDEX: |
53 | case AC_VERB_GET_HDMI_DIP_DATA: |
54 | case AC_VERB_GET_HDMI_DIP_XMIT: |
55 | case AC_VERB_GET_HDMI_CP_CTRL: |
56 | case AC_VERB_GET_HDMI_CHAN_SLOT: |
57 | case AC_VERB_GET_DEVICE_SEL: |
58 | case AC_VERB_GET_DEVICE_LIST: /* read-only volatile */ |
59 | return true; |
60 | } |
61 | |
62 | return false; |
63 | } |
64 | |
65 | static bool hda_writeable_reg(struct device *dev, unsigned int reg) |
66 | { |
67 | struct hdac_device *codec = dev_to_hdac_dev(dev); |
68 | unsigned int verb = get_verb(reg); |
69 | const unsigned int *v; |
70 | int i; |
71 | |
72 | snd_array_for_each(&codec->vendor_verbs, i, v) { |
73 | if (verb == *v) |
74 | return true; |
75 | } |
76 | |
77 | if (codec->caps_overwriting) |
78 | return true; |
79 | |
80 | switch (verb & 0xf00) { |
81 | case AC_VERB_GET_STREAM_FORMAT: |
82 | case AC_VERB_GET_AMP_GAIN_MUTE: |
83 | return true; |
84 | case AC_VERB_GET_PROC_COEF: |
85 | return codec->cache_coef; |
86 | case 0xf00: |
87 | break; |
88 | default: |
89 | return false; |
90 | } |
91 | |
92 | switch (verb) { |
93 | case AC_VERB_GET_CONNECT_SEL: |
94 | case AC_VERB_GET_SDI_SELECT: |
95 | case AC_VERB_GET_PIN_WIDGET_CONTROL: |
96 | case AC_VERB_GET_UNSOLICITED_RESPONSE: /* only as SET_UNSOLICITED_ENABLE */ |
97 | case AC_VERB_GET_BEEP_CONTROL: |
98 | case AC_VERB_GET_EAPD_BTLENABLE: |
99 | case AC_VERB_GET_DIGI_CONVERT_1: |
100 | case AC_VERB_GET_DIGI_CONVERT_2: /* only for beep control */ |
101 | case AC_VERB_GET_VOLUME_KNOB_CONTROL: |
102 | case AC_VERB_GET_GPIO_MASK: |
103 | case AC_VERB_GET_GPIO_DIRECTION: |
104 | case AC_VERB_GET_GPIO_DATA: /* not for volatile read */ |
105 | case AC_VERB_GET_GPIO_WAKE_MASK: |
106 | case AC_VERB_GET_GPIO_UNSOLICITED_RSP_MASK: |
107 | case AC_VERB_GET_GPIO_STICKY_MASK: |
108 | return true; |
109 | } |
110 | |
111 | return false; |
112 | } |
113 | |
114 | static bool hda_readable_reg(struct device *dev, unsigned int reg) |
115 | { |
116 | struct hdac_device *codec = dev_to_hdac_dev(dev); |
117 | unsigned int verb = get_verb(reg); |
118 | |
119 | if (codec->caps_overwriting) |
120 | return true; |
121 | |
122 | switch (verb) { |
123 | case AC_VERB_PARAMETERS: |
124 | case AC_VERB_GET_CONNECT_LIST: |
125 | case AC_VERB_GET_SUBSYSTEM_ID: |
126 | return true; |
127 | /* below are basically writable, but disabled for reducing unnecessary |
128 | * writes at sync |
129 | */ |
130 | case AC_VERB_GET_CONFIG_DEFAULT: /* usually just read */ |
131 | case AC_VERB_GET_CONV: /* managed in PCM code */ |
132 | case AC_VERB_GET_CVT_CHAN_COUNT: /* managed in HDMI CA code */ |
133 | return true; |
134 | } |
135 | |
136 | return hda_writeable_reg(dev, reg); |
137 | } |
138 | |
139 | /* |
140 | * Stereo amp pseudo register: |
141 | * for making easier to handle the stereo volume control, we provide a |
142 | * fake register to deal both left and right channels by a single |
143 | * (pseudo) register access. A verb consisting of SET_AMP_GAIN with |
144 | * *both* SET_LEFT and SET_RIGHT bits takes a 16bit value, the lower 8bit |
145 | * for the left and the upper 8bit for the right channel. |
146 | */ |
147 | static bool is_stereo_amp_verb(unsigned int reg) |
148 | { |
149 | if (((reg >> 8) & 0x700) != AC_VERB_SET_AMP_GAIN_MUTE) |
150 | return false; |
151 | return (reg & (AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT)) == |
152 | (AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT); |
153 | } |
154 | |
155 | /* read a pseudo stereo amp register (16bit left+right) */ |
156 | static int hda_reg_read_stereo_amp(struct hdac_device *codec, |
157 | unsigned int reg, unsigned int *val) |
158 | { |
159 | unsigned int left, right; |
160 | int err; |
161 | |
162 | reg &= ~(AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT); |
163 | err = snd_hdac_exec_verb(codec, cmd: reg | AC_AMP_GET_LEFT, flags: 0, res: &left); |
164 | if (err < 0) |
165 | return err; |
166 | err = snd_hdac_exec_verb(codec, cmd: reg | AC_AMP_GET_RIGHT, flags: 0, res: &right); |
167 | if (err < 0) |
168 | return err; |
169 | *val = left | (right << 8); |
170 | return 0; |
171 | } |
172 | |
173 | /* write a pseudo stereo amp register (16bit left+right) */ |
174 | static int hda_reg_write_stereo_amp(struct hdac_device *codec, |
175 | unsigned int reg, unsigned int val) |
176 | { |
177 | int err; |
178 | unsigned int verb, left, right; |
179 | |
180 | verb = AC_VERB_SET_AMP_GAIN_MUTE << 8; |
181 | if (reg & AC_AMP_GET_OUTPUT) |
182 | verb |= AC_AMP_SET_OUTPUT; |
183 | else |
184 | verb |= AC_AMP_SET_INPUT | ((reg & 0xf) << 8); |
185 | reg = (reg & ~0xfffff) | verb; |
186 | |
187 | left = val & 0xff; |
188 | right = (val >> 8) & 0xff; |
189 | if (left == right) { |
190 | reg |= AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT; |
191 | return snd_hdac_exec_verb(codec, cmd: reg | left, flags: 0, NULL); |
192 | } |
193 | |
194 | err = snd_hdac_exec_verb(codec, cmd: reg | AC_AMP_SET_LEFT | left, flags: 0, NULL); |
195 | if (err < 0) |
196 | return err; |
197 | err = snd_hdac_exec_verb(codec, cmd: reg | AC_AMP_SET_RIGHT | right, flags: 0, NULL); |
198 | if (err < 0) |
199 | return err; |
200 | return 0; |
201 | } |
202 | |
203 | /* read a pseudo coef register (16bit) */ |
204 | static int hda_reg_read_coef(struct hdac_device *codec, unsigned int reg, |
205 | unsigned int *val) |
206 | { |
207 | unsigned int verb; |
208 | int err; |
209 | |
210 | if (!codec->cache_coef) |
211 | return -EINVAL; |
212 | /* LSB 8bit = coef index */ |
213 | verb = (reg & ~0xfff00) | (AC_VERB_SET_COEF_INDEX << 8); |
214 | err = snd_hdac_exec_verb(codec, cmd: verb, flags: 0, NULL); |
215 | if (err < 0) |
216 | return err; |
217 | verb = (reg & ~0xfffff) | (AC_VERB_GET_COEF_INDEX << 8); |
218 | return snd_hdac_exec_verb(codec, cmd: verb, flags: 0, res: val); |
219 | } |
220 | |
221 | /* write a pseudo coef register (16bit) */ |
222 | static int hda_reg_write_coef(struct hdac_device *codec, unsigned int reg, |
223 | unsigned int val) |
224 | { |
225 | unsigned int verb; |
226 | int err; |
227 | |
228 | if (!codec->cache_coef) |
229 | return -EINVAL; |
230 | /* LSB 8bit = coef index */ |
231 | verb = (reg & ~0xfff00) | (AC_VERB_SET_COEF_INDEX << 8); |
232 | err = snd_hdac_exec_verb(codec, cmd: verb, flags: 0, NULL); |
233 | if (err < 0) |
234 | return err; |
235 | verb = (reg & ~0xfffff) | (AC_VERB_GET_COEF_INDEX << 8) | |
236 | (val & 0xffff); |
237 | return snd_hdac_exec_verb(codec, cmd: verb, flags: 0, NULL); |
238 | } |
239 | |
240 | static int hda_reg_read(void *context, unsigned int reg, unsigned int *val) |
241 | { |
242 | struct hdac_device *codec = context; |
243 | int verb = get_verb(reg); |
244 | int err; |
245 | int pm_lock = 0; |
246 | |
247 | if (verb != AC_VERB_GET_POWER_STATE) { |
248 | pm_lock = codec_pm_lock(codec); |
249 | if (pm_lock < 0) |
250 | return -EAGAIN; |
251 | } |
252 | reg |= (codec->addr << 28); |
253 | if (is_stereo_amp_verb(reg)) { |
254 | err = hda_reg_read_stereo_amp(codec, reg, val); |
255 | goto out; |
256 | } |
257 | if (verb == AC_VERB_GET_PROC_COEF) { |
258 | err = hda_reg_read_coef(codec, reg, val); |
259 | goto out; |
260 | } |
261 | if ((verb & 0x700) == AC_VERB_SET_AMP_GAIN_MUTE) |
262 | reg &= ~AC_AMP_FAKE_MUTE; |
263 | |
264 | err = snd_hdac_exec_verb(codec, cmd: reg, flags: 0, res: val); |
265 | if (err < 0) |
266 | goto out; |
267 | /* special handling for asymmetric reads */ |
268 | if (verb == AC_VERB_GET_POWER_STATE) { |
269 | if (*val & AC_PWRST_ERROR) |
270 | *val = -1; |
271 | else /* take only the actual state */ |
272 | *val = (*val >> 4) & 0x0f; |
273 | } |
274 | out: |
275 | codec_pm_unlock(codec, lock: pm_lock); |
276 | return err; |
277 | } |
278 | |
279 | static int hda_reg_write(void *context, unsigned int reg, unsigned int val) |
280 | { |
281 | struct hdac_device *codec = context; |
282 | unsigned int verb; |
283 | int i, bytes, err; |
284 | int pm_lock = 0; |
285 | |
286 | if (codec->caps_overwriting) |
287 | return 0; |
288 | |
289 | reg &= ~0x00080000U; /* drop GET bit */ |
290 | reg |= (codec->addr << 28); |
291 | verb = get_verb(reg); |
292 | |
293 | if (verb != AC_VERB_SET_POWER_STATE) { |
294 | pm_lock = codec_pm_lock(codec); |
295 | if (pm_lock < 0) |
296 | return codec->lazy_cache ? 0 : -EAGAIN; |
297 | } |
298 | |
299 | if (is_stereo_amp_verb(reg)) { |
300 | err = hda_reg_write_stereo_amp(codec, reg, val); |
301 | goto out; |
302 | } |
303 | |
304 | if (verb == AC_VERB_SET_PROC_COEF) { |
305 | err = hda_reg_write_coef(codec, reg, val); |
306 | goto out; |
307 | } |
308 | |
309 | switch (verb & 0xf00) { |
310 | case AC_VERB_SET_AMP_GAIN_MUTE: |
311 | if ((reg & AC_AMP_FAKE_MUTE) && (val & AC_AMP_MUTE)) |
312 | val = 0; |
313 | verb = AC_VERB_SET_AMP_GAIN_MUTE; |
314 | if (reg & AC_AMP_GET_LEFT) |
315 | verb |= AC_AMP_SET_LEFT >> 8; |
316 | else |
317 | verb |= AC_AMP_SET_RIGHT >> 8; |
318 | if (reg & AC_AMP_GET_OUTPUT) { |
319 | verb |= AC_AMP_SET_OUTPUT >> 8; |
320 | } else { |
321 | verb |= AC_AMP_SET_INPUT >> 8; |
322 | verb |= reg & 0xf; |
323 | } |
324 | break; |
325 | } |
326 | |
327 | switch (verb) { |
328 | case AC_VERB_SET_DIGI_CONVERT_1: |
329 | bytes = 2; |
330 | break; |
331 | case AC_VERB_SET_CONFIG_DEFAULT_BYTES_0: |
332 | bytes = 4; |
333 | break; |
334 | default: |
335 | bytes = 1; |
336 | break; |
337 | } |
338 | |
339 | for (i = 0; i < bytes; i++) { |
340 | reg &= ~0xfffff; |
341 | reg |= (verb + i) << 8 | ((val >> (8 * i)) & 0xff); |
342 | err = snd_hdac_exec_verb(codec, cmd: reg, flags: 0, NULL); |
343 | if (err < 0) |
344 | goto out; |
345 | } |
346 | |
347 | out: |
348 | codec_pm_unlock(codec, lock: pm_lock); |
349 | return err; |
350 | } |
351 | |
352 | static const struct regmap_config hda_regmap_cfg = { |
353 | .name = "hdaudio" , |
354 | .reg_bits = 32, |
355 | .val_bits = 32, |
356 | .max_register = 0xfffffff, |
357 | .writeable_reg = hda_writeable_reg, |
358 | .readable_reg = hda_readable_reg, |
359 | .volatile_reg = hda_volatile_reg, |
360 | .cache_type = REGCACHE_MAPLE, |
361 | .reg_read = hda_reg_read, |
362 | .reg_write = hda_reg_write, |
363 | .use_single_read = true, |
364 | .use_single_write = true, |
365 | .disable_locking = true, |
366 | }; |
367 | |
368 | /** |
369 | * snd_hdac_regmap_init - Initialize regmap for HDA register accesses |
370 | * @codec: the codec object |
371 | * |
372 | * Returns zero for success or a negative error code. |
373 | */ |
374 | int snd_hdac_regmap_init(struct hdac_device *codec) |
375 | { |
376 | struct regmap *regmap; |
377 | |
378 | regmap = regmap_init(&codec->dev, NULL, codec, &hda_regmap_cfg); |
379 | if (IS_ERR(ptr: regmap)) |
380 | return PTR_ERR(ptr: regmap); |
381 | codec->regmap = regmap; |
382 | snd_array_init(array: &codec->vendor_verbs, size: sizeof(unsigned int), align: 8); |
383 | return 0; |
384 | } |
385 | EXPORT_SYMBOL_GPL(snd_hdac_regmap_init); |
386 | |
387 | /** |
388 | * snd_hdac_regmap_exit - Release the regmap from HDA codec |
389 | * @codec: the codec object |
390 | */ |
391 | void snd_hdac_regmap_exit(struct hdac_device *codec) |
392 | { |
393 | if (codec->regmap) { |
394 | regmap_exit(map: codec->regmap); |
395 | codec->regmap = NULL; |
396 | snd_array_free(array: &codec->vendor_verbs); |
397 | } |
398 | } |
399 | EXPORT_SYMBOL_GPL(snd_hdac_regmap_exit); |
400 | |
401 | /** |
402 | * snd_hdac_regmap_add_vendor_verb - add a vendor-specific verb to regmap |
403 | * @codec: the codec object |
404 | * @verb: verb to allow accessing via regmap |
405 | * |
406 | * Returns zero for success or a negative error code. |
407 | */ |
408 | int snd_hdac_regmap_add_vendor_verb(struct hdac_device *codec, |
409 | unsigned int verb) |
410 | { |
411 | unsigned int *p = snd_array_new(array: &codec->vendor_verbs); |
412 | |
413 | if (!p) |
414 | return -ENOMEM; |
415 | *p = verb | 0x800; /* set GET bit */ |
416 | return 0; |
417 | } |
418 | EXPORT_SYMBOL_GPL(snd_hdac_regmap_add_vendor_verb); |
419 | |
420 | /* |
421 | * helper functions |
422 | */ |
423 | |
424 | /* write a pseudo-register value (w/o power sequence) */ |
425 | static int reg_raw_write(struct hdac_device *codec, unsigned int reg, |
426 | unsigned int val) |
427 | { |
428 | int err; |
429 | |
430 | mutex_lock(&codec->regmap_lock); |
431 | if (!codec->regmap) |
432 | err = hda_reg_write(context: codec, reg, val); |
433 | else |
434 | err = regmap_write(map: codec->regmap, reg, val); |
435 | mutex_unlock(lock: &codec->regmap_lock); |
436 | return err; |
437 | } |
438 | |
439 | /* a helper macro to call @func_call; retry with power-up if failed */ |
440 | #define CALL_RAW_FUNC(codec, func_call) \ |
441 | ({ \ |
442 | int _err = func_call; \ |
443 | if (_err == -EAGAIN) { \ |
444 | _err = snd_hdac_power_up_pm(codec); \ |
445 | if (_err >= 0) \ |
446 | _err = func_call; \ |
447 | snd_hdac_power_down_pm(codec); \ |
448 | } \ |
449 | _err;}) |
450 | |
451 | /** |
452 | * snd_hdac_regmap_write_raw - write a pseudo register with power mgmt |
453 | * @codec: the codec object |
454 | * @reg: pseudo register |
455 | * @val: value to write |
456 | * |
457 | * Returns zero if successful or a negative error code. |
458 | */ |
459 | int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg, |
460 | unsigned int val) |
461 | { |
462 | return CALL_RAW_FUNC(codec, reg_raw_write(codec, reg, val)); |
463 | } |
464 | EXPORT_SYMBOL_GPL(snd_hdac_regmap_write_raw); |
465 | |
466 | static int reg_raw_read(struct hdac_device *codec, unsigned int reg, |
467 | unsigned int *val, bool uncached) |
468 | { |
469 | int err; |
470 | |
471 | mutex_lock(&codec->regmap_lock); |
472 | if (uncached || !codec->regmap) |
473 | err = hda_reg_read(context: codec, reg, val); |
474 | else |
475 | err = regmap_read(map: codec->regmap, reg, val); |
476 | mutex_unlock(lock: &codec->regmap_lock); |
477 | return err; |
478 | } |
479 | |
480 | static int __snd_hdac_regmap_read_raw(struct hdac_device *codec, |
481 | unsigned int reg, unsigned int *val, |
482 | bool uncached) |
483 | { |
484 | return CALL_RAW_FUNC(codec, reg_raw_read(codec, reg, val, uncached)); |
485 | } |
486 | |
487 | /** |
488 | * snd_hdac_regmap_read_raw - read a pseudo register with power mgmt |
489 | * @codec: the codec object |
490 | * @reg: pseudo register |
491 | * @val: pointer to store the read value |
492 | * |
493 | * Returns zero if successful or a negative error code. |
494 | */ |
495 | int snd_hdac_regmap_read_raw(struct hdac_device *codec, unsigned int reg, |
496 | unsigned int *val) |
497 | { |
498 | return __snd_hdac_regmap_read_raw(codec, reg, val, uncached: false); |
499 | } |
500 | EXPORT_SYMBOL_GPL(snd_hdac_regmap_read_raw); |
501 | |
502 | /* Works like snd_hdac_regmap_read_raw(), but this doesn't read from the |
503 | * cache but always via hda verbs. |
504 | */ |
505 | int snd_hdac_regmap_read_raw_uncached(struct hdac_device *codec, |
506 | unsigned int reg, unsigned int *val) |
507 | { |
508 | return __snd_hdac_regmap_read_raw(codec, reg, val, uncached: true); |
509 | } |
510 | |
511 | static int reg_raw_update(struct hdac_device *codec, unsigned int reg, |
512 | unsigned int mask, unsigned int val) |
513 | { |
514 | unsigned int orig; |
515 | bool change; |
516 | int err; |
517 | |
518 | mutex_lock(&codec->regmap_lock); |
519 | if (codec->regmap) { |
520 | err = regmap_update_bits_check(map: codec->regmap, reg, mask, val, |
521 | change: &change); |
522 | if (!err) |
523 | err = change ? 1 : 0; |
524 | } else { |
525 | err = hda_reg_read(context: codec, reg, val: &orig); |
526 | if (!err) { |
527 | val &= mask; |
528 | val |= orig & ~mask; |
529 | if (val != orig) { |
530 | err = hda_reg_write(context: codec, reg, val); |
531 | if (!err) |
532 | err = 1; |
533 | } |
534 | } |
535 | } |
536 | mutex_unlock(lock: &codec->regmap_lock); |
537 | return err; |
538 | } |
539 | |
540 | /** |
541 | * snd_hdac_regmap_update_raw - update a pseudo register with power mgmt |
542 | * @codec: the codec object |
543 | * @reg: pseudo register |
544 | * @mask: bit mask to update |
545 | * @val: value to update |
546 | * |
547 | * Returns zero if successful or a negative error code. |
548 | */ |
549 | int snd_hdac_regmap_update_raw(struct hdac_device *codec, unsigned int reg, |
550 | unsigned int mask, unsigned int val) |
551 | { |
552 | return CALL_RAW_FUNC(codec, reg_raw_update(codec, reg, mask, val)); |
553 | } |
554 | EXPORT_SYMBOL_GPL(snd_hdac_regmap_update_raw); |
555 | |
556 | static int reg_raw_update_once(struct hdac_device *codec, unsigned int reg, |
557 | unsigned int mask, unsigned int val) |
558 | { |
559 | int err = 0; |
560 | |
561 | if (!codec->regmap) |
562 | return reg_raw_update(codec, reg, mask, val); |
563 | |
564 | mutex_lock(&codec->regmap_lock); |
565 | /* Discard any updates to already initialised registers. */ |
566 | if (!regcache_reg_cached(map: codec->regmap, reg)) |
567 | err = regmap_update_bits(map: codec->regmap, reg, mask, val); |
568 | mutex_unlock(lock: &codec->regmap_lock); |
569 | return err; |
570 | } |
571 | |
572 | /** |
573 | * snd_hdac_regmap_update_raw_once - initialize the register value only once |
574 | * @codec: the codec object |
575 | * @reg: pseudo register |
576 | * @mask: bit mask to update |
577 | * @val: value to update |
578 | * |
579 | * Performs the update of the register bits only once when the register |
580 | * hasn't been initialized yet. Used in HD-audio legacy driver. |
581 | * Returns zero if successful or a negative error code |
582 | */ |
583 | int snd_hdac_regmap_update_raw_once(struct hdac_device *codec, unsigned int reg, |
584 | unsigned int mask, unsigned int val) |
585 | { |
586 | return CALL_RAW_FUNC(codec, reg_raw_update_once(codec, reg, mask, val)); |
587 | } |
588 | EXPORT_SYMBOL_GPL(snd_hdac_regmap_update_raw_once); |
589 | |
590 | /** |
591 | * snd_hdac_regmap_sync - sync out the cached values for PM resume |
592 | * @codec: the codec object |
593 | */ |
594 | void snd_hdac_regmap_sync(struct hdac_device *codec) |
595 | { |
596 | mutex_lock(&codec->regmap_lock); |
597 | if (codec->regmap) |
598 | regcache_sync(map: codec->regmap); |
599 | mutex_unlock(lock: &codec->regmap_lock); |
600 | } |
601 | EXPORT_SYMBOL_GPL(snd_hdac_regmap_sync); |
602 | |