1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // rt700.c -- rt700 ALSA SoC audio driver
4 //
5 // Copyright(c) 2019 Realtek Semiconductor Corp.
6 //
7 //
8
9 #include <linux/module.h>
10 #include <linux/moduleparam.h>
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/delay.h>
14 #include <linux/pm_runtime.h>
15 #include <linux/pm.h>
16 #include <linux/soundwire/sdw.h>
17 #include <linux/regmap.h>
18 #include <linux/slab.h>
19 #include <sound/core.h>
20 #include <sound/pcm.h>
21 #include <sound/pcm_params.h>
22 #include <sound/sdw.h>
23 #include <sound/soc.h>
24 #include <sound/soc-dapm.h>
25 #include <sound/initval.h>
26 #include <sound/tlv.h>
27 #include <sound/hda_verbs.h>
28 #include <sound/jack.h>
29
30 #include "rt700.h"
31
32 static int rt700_index_write(struct regmap *regmap,
33 unsigned int reg, unsigned int value)
34 {
35 int ret;
36 unsigned int addr = (RT700_PRIV_INDEX_W_H << 8) | reg;
37
38 ret = regmap_write(regmap, addr, value);
39 if (ret < 0)
40 pr_err("%s: Failed to set private value: %06x <= %04x ret=%d\n",
41 __func__, addr, value, ret);
42
43 return ret;
44 }
45
46 static int rt700_index_read(struct regmap *regmap,
47 unsigned int reg, unsigned int *value)
48 {
49 int ret;
50 unsigned int addr = (RT700_PRIV_INDEX_W_H << 8) | reg;
51
52 *value = 0;
53 ret = regmap_read(regmap, addr, value);
54 if (ret < 0)
55 pr_err("%s: Failed to get private value: %06x => %04x ret=%d\n",
56 __func__, addr, *value, ret);
57
58 return ret;
59 }
60
61 static unsigned int rt700_button_detect(struct rt700_priv *rt700)
62 {
63 unsigned int btn_type = 0, val80, val81;
64 int ret;
65
66 ret = rt700_index_read(rt700->regmap, RT700_IRQ_FLAG_TABLE1, &val80);
67 if (ret < 0)
68 goto read_error;
69 ret = rt700_index_read(rt700->regmap, RT700_IRQ_FLAG_TABLE2, &val81);
70 if (ret < 0)
71 goto read_error;
72
73 val80 &= 0x0381;
74 val81 &= 0xff00;
75
76 switch (val80) {
77 case 0x0200:
78 case 0x0100:
79 case 0x0080:
80 btn_type |= SND_JACK_BTN_0;
81 break;
82 case 0x0001:
83 btn_type |= SND_JACK_BTN_3;
84 break;
85 }
86 switch (val81) {
87 case 0x8000:
88 case 0x4000:
89 case 0x2000:
90 btn_type |= SND_JACK_BTN_1;
91 break;
92 case 0x1000:
93 case 0x0800:
94 case 0x0400:
95 btn_type |= SND_JACK_BTN_2;
96 break;
97 case 0x0200:
98 case 0x0100:
99 btn_type |= SND_JACK_BTN_3;
100 break;
101 }
102 read_error:
103 return btn_type;
104 }
105
106 static int rt700_headset_detect(struct rt700_priv *rt700)
107 {
108 unsigned int buf, loop = 0;
109 int ret;
110 unsigned int jack_status = 0, reg;
111
112 ret = rt700_index_read(rt700->regmap,
113 RT700_COMBO_JACK_AUTO_CTL2, &buf);
114 if (ret < 0)
115 goto io_error;
116
117 while (loop < 500 &&
118 (buf & RT700_COMBOJACK_AUTO_DET_STATUS) == 0) {
119 loop++;
120
121 usleep_range(9000, 10000);
122 ret = rt700_index_read(rt700->regmap,
123 RT700_COMBO_JACK_AUTO_CTL2, &buf);
124 if (ret < 0)
125 goto io_error;
126
127 reg = RT700_VERB_GET_PIN_SENSE | RT700_HP_OUT;
128 ret = regmap_read(rt700->regmap, reg, &jack_status);
129 if ((jack_status & (1 << 31)) == 0)
130 goto remove_error;
131 }
132
133 if (loop >= 500)
134 goto to_error;
135
136 if (buf & RT700_COMBOJACK_AUTO_DET_TRS)
137 rt700->jack_type = SND_JACK_HEADPHONE;
138 else if ((buf & RT700_COMBOJACK_AUTO_DET_CTIA) ||
139 (buf & RT700_COMBOJACK_AUTO_DET_OMTP))
140 rt700->jack_type = SND_JACK_HEADSET;
141
142 return 0;
143
144 to_error:
145 ret = -ETIMEDOUT;
146 pr_err_ratelimited("Time-out error in %s\n", __func__);
147 return ret;
148 io_error:
149 pr_err_ratelimited("IO error in %s, ret %d\n", __func__, ret);
150 return ret;
151 remove_error:
152 pr_err_ratelimited("Jack removal in %s\n", __func__);
153 return -ENODEV;
154 }
155
156 static void rt700_jack_detect_handler(struct work_struct *work)
157 {
158 struct rt700_priv *rt700 =
159 container_of(work, struct rt700_priv, jack_detect_work.work);
160 int btn_type = 0, ret;
161 unsigned int jack_status = 0, reg;
162
163 if (!rt700->hs_jack)
164 return;
165
166 if (!snd_soc_card_is_instantiated(rt700->component->card))
167 return;
168
169 reg = RT700_VERB_GET_PIN_SENSE | RT700_HP_OUT;
170 ret = regmap_read(rt700->regmap, reg, &jack_status);
171 if (ret < 0)
172 goto io_error;
173
174 /* pin attached */
175 if (jack_status & (1 << 31)) {
176 /* jack in */
177 if (rt700->jack_type == 0) {
178 ret = rt700_headset_detect(rt700);
179 if (ret < 0)
180 return;
181 if (rt700->jack_type == SND_JACK_HEADSET)
182 btn_type = rt700_button_detect(rt700);
183 } else if (rt700->jack_type == SND_JACK_HEADSET) {
184 /* jack is already in, report button event */
185 btn_type = rt700_button_detect(rt700);
186 }
187 } else {
188 /* jack out */
189 rt700->jack_type = 0;
190 }
191
192 dev_dbg(&rt700->slave->dev,
193 "in %s, jack_type=0x%x\n", __func__, rt700->jack_type);
194 dev_dbg(&rt700->slave->dev,
195 "in %s, btn_type=0x%x\n", __func__, btn_type);
196
197 snd_soc_jack_report(rt700->hs_jack, rt700->jack_type | btn_type,
198 SND_JACK_HEADSET |
199 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
200 SND_JACK_BTN_2 | SND_JACK_BTN_3);
201
202 if (btn_type) {
203 /* button released */
204 snd_soc_jack_report(rt700->hs_jack, rt700->jack_type,
205 SND_JACK_HEADSET |
206 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
207 SND_JACK_BTN_2 | SND_JACK_BTN_3);
208
209 mod_delayed_work(system_power_efficient_wq,
210 &rt700->jack_btn_check_work, msecs_to_jiffies(200));
211 }
212
213 return;
214
215 io_error:
216 pr_err_ratelimited("IO error in %s, ret %d\n", __func__, ret);
217 }
218
219 static void rt700_btn_check_handler(struct work_struct *work)
220 {
221 struct rt700_priv *rt700 = container_of(work, struct rt700_priv,
222 jack_btn_check_work.work);
223 int btn_type = 0, ret;
224 unsigned int jack_status = 0, reg;
225
226 reg = RT700_VERB_GET_PIN_SENSE | RT700_HP_OUT;
227 ret = regmap_read(rt700->regmap, reg, &jack_status);
228 if (ret < 0)
229 goto io_error;
230
231 /* pin attached */
232 if (jack_status & (1 << 31)) {
233 if (rt700->jack_type == SND_JACK_HEADSET) {
234 /* jack is already in, report button event */
235 btn_type = rt700_button_detect(rt700);
236 }
237 } else {
238 rt700->jack_type = 0;
239 }
240
241 /* cbj comparator */
242 ret = rt700_index_read(rt700->regmap, RT700_COMBO_JACK_AUTO_CTL2, ®);
243 if (ret < 0)
244 goto io_error;
245
246 if ((reg & 0xf0) == 0xf0)
247 btn_type = 0;
248
249 dev_dbg(&rt700->slave->dev,
250 "%s, btn_type=0x%x\n", __func__, btn_type);
251 snd_soc_jack_report(rt700->hs_jack, rt700->jack_type | btn_type,
252 SND_JACK_HEADSET |
253 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
254 SND_JACK_BTN_2 | SND_JACK_BTN_3);
255
256 if (btn_type) {
257 /* button released */
258 snd_soc_jack_report(rt700->hs_jack, rt700->jack_type,
259 SND_JACK_HEADSET |
260 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
261 SND_JACK_BTN_2 | SND_JACK_BTN_3);
262
263 mod_delayed_work(system_power_efficient_wq,
264 &rt700->jack_btn_check_work, msecs_to_jiffies(200));
265 }
266
267 return;
268
269 io_error:
270 pr_err_ratelimited("IO error in %s, ret %d\n", __func__, ret);
271 }
272
273 static void rt700_jack_init(struct rt700_priv *rt700)
274 {
275 struct snd_soc_dapm_context *dapm =
276 snd_soc_component_get_dapm(rt700->component);
277
278 /* power on */
279 if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
280 regmap_write(rt700->regmap,
281 RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D0);
282
283 if (rt700->hs_jack) {
284 /* Enable Jack Detection */
285 regmap_write(rt700->regmap,
286 RT700_SET_MIC2_UNSOLICITED_ENABLE, 0x82);
287 regmap_write(rt700->regmap,
288 RT700_SET_HP_UNSOLICITED_ENABLE, 0x81);
289 regmap_write(rt700->regmap,
290 RT700_SET_INLINE_UNSOLICITED_ENABLE, 0x83);
291 rt700_index_write(rt700->regmap, 0x10, 0x2420);
292 rt700_index_write(rt700->regmap, 0x19, 0x2e11);
293
294 dev_dbg(&rt700->slave->dev, "in %s enable\n", __func__);
295
296 mod_delayed_work(system_power_efficient_wq,
297 &rt700->jack_detect_work, msecs_to_jiffies(250));
298 } else {
299 regmap_write(rt700->regmap,
300 RT700_SET_MIC2_UNSOLICITED_ENABLE, 0x00);
301 regmap_write(rt700->regmap,
302 RT700_SET_HP_UNSOLICITED_ENABLE, 0x00);
303 regmap_write(rt700->regmap,
304 RT700_SET_INLINE_UNSOLICITED_ENABLE, 0x00);
305
306 dev_dbg(&rt700->slave->dev, "in %s disable\n", __func__);
307 }
308
309 /* power off */
310 if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
311 regmap_write(rt700->regmap,
312 RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D3);
313 }
314
315 static int rt700_set_jack_detect(struct snd_soc_component *component,
316 struct snd_soc_jack *hs_jack, void *data)
317 {
318 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
319 int ret;
320
321 rt700->hs_jack = hs_jack;
322
323 /* we can only resume if the device was initialized at least once */
324 if (!rt700->first_hw_init)
325 return 0;
326
327 ret = pm_runtime_resume_and_get(component->dev);
328 if (ret < 0) {
329 if (ret != -EACCES) {
330 dev_err(component->dev, "%s: failed to resume %d\n", __func__, ret);
331 return ret;
332 }
333
334 /* pm_runtime not enabled yet */
335 dev_dbg(component->dev, "%s: skipping jack init for now\n", __func__);
336 return 0;
337 }
338
339 rt700_jack_init(rt700);
340
341 pm_runtime_mark_last_busy(component->dev);
342 pm_runtime_put_autosuspend(component->dev);
343
344 return 0;
345 }
346
347 static void rt700_get_gain(struct rt700_priv *rt700, unsigned int addr_h,
348 unsigned int addr_l, unsigned int val_h,
349 unsigned int *r_val, unsigned int *l_val)
350 {
351 /* R Channel */
352 *r_val = (val_h << 8);
353 regmap_read(rt700->regmap, addr_l, r_val);
354
355 /* L Channel */
356 val_h |= 0x20;
357 *l_val = (val_h << 8);
358 regmap_read(rt700->regmap, addr_h, l_val);
359 }
360
361 /* For Verb-Set Amplifier Gain (Verb ID = 3h) */
362 static int rt700_set_amp_gain_put(struct snd_kcontrol *kcontrol,
363 struct snd_ctl_elem_value *ucontrol)
364 {
365 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
366 struct snd_soc_dapm_context *dapm =
367 snd_soc_component_get_dapm(component);
368 struct soc_mixer_control *mc =
369 (struct soc_mixer_control *)kcontrol->private_value;
370 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
371 unsigned int addr_h, addr_l, val_h, val_ll, val_lr;
372 unsigned int read_ll, read_rl;
373 int i;
374
375 /* Can't use update bit function, so read the original value first */
376 addr_h = mc->reg;
377 addr_l = mc->rreg;
378 if (mc->shift == RT700_DIR_OUT_SFT) /* output */
379 val_h = 0x80;
380 else /* input */
381 val_h = 0x0;
382
383 rt700_get_gain(rt700, addr_h, addr_l, val_h, &read_rl, &read_ll);
384
385 /* L Channel */
386 if (mc->invert) {
387 /* for mute */
388 val_ll = (mc->max - ucontrol->value.integer.value[0]) << 7;
389 /* keep gain */
390 read_ll = read_ll & 0x7f;
391 val_ll |= read_ll;
392 } else {
393 /* for gain */
394 val_ll = ((ucontrol->value.integer.value[0]) & 0x7f);
395 if (val_ll > mc->max)
396 val_ll = mc->max;
397 /* keep mute status */
398 read_ll = read_ll & 0x80;
399 val_ll |= read_ll;
400 }
401
402 if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
403 regmap_write(rt700->regmap,
404 RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D0);
405
406 /* R Channel */
407 if (mc->invert) {
408 /* for mute */
409 val_lr = (mc->max - ucontrol->value.integer.value[1]) << 7;
410 /* keep gain */
411 read_rl = read_rl & 0x7f;
412 val_lr |= read_rl;
413 } else {
414 /* for gain */
415 val_lr = ((ucontrol->value.integer.value[1]) & 0x7f);
416 if (val_lr > mc->max)
417 val_lr = mc->max;
418 /* keep mute status */
419 read_rl = read_rl & 0x80;
420 val_lr |= read_rl;
421 }
422
423 for (i = 0; i < 3; i++) { /* retry 3 times at most */
424 if (val_ll == val_lr) {
425 /* Set both L/R channels at the same time */
426 val_h = (1 << mc->shift) | (3 << 4);
427 regmap_write(rt700->regmap,
428 addr_h, (val_h << 8 | val_ll));
429 regmap_write(rt700->regmap,
430 addr_l, (val_h << 8 | val_ll));
431 } else {
432 /* Lch*/
433 val_h = (1 << mc->shift) | (1 << 5);
434 regmap_write(rt700->regmap,
435 addr_h, (val_h << 8 | val_ll));
436
437 /* Rch */
438 val_h = (1 << mc->shift) | (1 << 4);
439 regmap_write(rt700->regmap,
440 addr_l, (val_h << 8 | val_lr));
441 }
442 /* check result */
443 if (mc->shift == RT700_DIR_OUT_SFT) /* output */
444 val_h = 0x80;
445 else /* input */
446 val_h = 0x0;
447
448 rt700_get_gain(rt700, addr_h, addr_l, val_h,
449 &read_rl, &read_ll);
450 if (read_rl == val_lr && read_ll == val_ll)
451 break;
452 }
453
454 if (dapm->bias_level <= SND_SOC_BIAS_STANDBY)
455 regmap_write(rt700->regmap,
456 RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D3);
457 return 0;
458 }
459
460 static int rt700_set_amp_gain_get(struct snd_kcontrol *kcontrol,
461 struct snd_ctl_elem_value *ucontrol)
462 {
463 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
464 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
465 struct soc_mixer_control *mc =
466 (struct soc_mixer_control *)kcontrol->private_value;
467 unsigned int addr_h, addr_l, val_h;
468 unsigned int read_ll, read_rl;
469
470 addr_h = mc->reg;
471 addr_l = mc->rreg;
472 if (mc->shift == RT700_DIR_OUT_SFT) /* output */
473 val_h = 0x80;
474 else /* input */
475 val_h = 0x0;
476
477 rt700_get_gain(rt700, addr_h, addr_l, val_h, &read_rl, &read_ll);
478
479 if (mc->invert) {
480 /* for mute status */
481 read_ll = !((read_ll & 0x80) >> RT700_MUTE_SFT);
482 read_rl = !((read_rl & 0x80) >> RT700_MUTE_SFT);
483 } else {
484 /* for gain */
485 read_ll = read_ll & 0x7f;
486 read_rl = read_rl & 0x7f;
487 }
488 ucontrol->value.integer.value[0] = read_ll;
489 ucontrol->value.integer.value[1] = read_rl;
490
491 return 0;
492 }
493
494 static const DECLARE_TLV_DB_SCALE(out_vol_tlv, -6525, 75, 0);
495 static const DECLARE_TLV_DB_SCALE(in_vol_tlv, -1725, 75, 0);
496 static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, 0, 1000, 0);
497
498 static const struct snd_kcontrol_new rt700_snd_controls[] = {
499 SOC_DOUBLE_R_EXT_TLV("DAC Front Playback Volume",
500 RT700_SET_GAIN_DAC1_H, RT700_SET_GAIN_DAC1_L,
501 RT700_DIR_OUT_SFT, 0x57, 0,
502 rt700_set_amp_gain_get, rt700_set_amp_gain_put, out_vol_tlv),
503 SOC_DOUBLE_R_EXT("ADC 08 Capture Switch",
504 RT700_SET_GAIN_ADC2_H, RT700_SET_GAIN_ADC2_L,
505 RT700_DIR_IN_SFT, 1, 1,
506 rt700_set_amp_gain_get, rt700_set_amp_gain_put),
507 SOC_DOUBLE_R_EXT("ADC 09 Capture Switch",
508 RT700_SET_GAIN_ADC1_H, RT700_SET_GAIN_ADC1_L,
509 RT700_DIR_IN_SFT, 1, 1,
510 rt700_set_amp_gain_get, rt700_set_amp_gain_put),
511 SOC_DOUBLE_R_EXT_TLV("ADC 08 Capture Volume",
512 RT700_SET_GAIN_ADC2_H, RT700_SET_GAIN_ADC2_L,
513 RT700_DIR_IN_SFT, 0x3f, 0,
514 rt700_set_amp_gain_get, rt700_set_amp_gain_put, in_vol_tlv),
515 SOC_DOUBLE_R_EXT_TLV("ADC 09 Capture Volume",
516 RT700_SET_GAIN_ADC1_H, RT700_SET_GAIN_ADC1_L,
517 RT700_DIR_IN_SFT, 0x3f, 0,
518 rt700_set_amp_gain_get, rt700_set_amp_gain_put, in_vol_tlv),
519 SOC_DOUBLE_R_EXT_TLV("AMIC Volume",
520 RT700_SET_GAIN_AMIC_H, RT700_SET_GAIN_AMIC_L,
521 RT700_DIR_IN_SFT, 3, 0,
522 rt700_set_amp_gain_get, rt700_set_amp_gain_put, mic_vol_tlv),
523 };
524
525 static int rt700_mux_get(struct snd_kcontrol *kcontrol,
526 struct snd_ctl_elem_value *ucontrol)
527 {
528 struct snd_soc_component *component =
529 snd_soc_dapm_kcontrol_component(kcontrol);
530 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
531 unsigned int reg, val = 0, nid;
532 int ret;
533
534 if (strstr(ucontrol->id.name, "HPO Mux"))
535 nid = RT700_HP_OUT;
536 else if (strstr(ucontrol->id.name, "ADC 22 Mux"))
537 nid = RT700_MIXER_IN1;
538 else if (strstr(ucontrol->id.name, "ADC 23 Mux"))
539 nid = RT700_MIXER_IN2;
540 else
541 return -EINVAL;
542
543 /* vid = 0xf01 */
544 reg = RT700_VERB_SET_CONNECT_SEL | nid;
545 ret = regmap_read(rt700->regmap, reg, &val);
546 if (ret < 0)
547 return ret;
548
549 ucontrol->value.enumerated.item[0] = val;
550
551 return 0;
552 }
553
554 static int rt700_mux_put(struct snd_kcontrol *kcontrol,
555 struct snd_ctl_elem_value *ucontrol)
556 {
557 struct snd_soc_component *component =
558 snd_soc_dapm_kcontrol_component(kcontrol);
559 struct snd_soc_dapm_context *dapm =
560 snd_soc_dapm_kcontrol_dapm(kcontrol);
561 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
562 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
563 unsigned int *item = ucontrol->value.enumerated.item;
564 unsigned int val, val2 = 0, change, reg, nid;
565 int ret;
566
567 if (item[0] >= e->items)
568 return -EINVAL;
569
570 if (strstr(ucontrol->id.name, "HPO Mux"))
571 nid = RT700_HP_OUT;
572 else if (strstr(ucontrol->id.name, "ADC 22 Mux"))
573 nid = RT700_MIXER_IN1;
574 else if (strstr(ucontrol->id.name, "ADC 23 Mux"))
575 nid = RT700_MIXER_IN2;
576 else
577 return -EINVAL;
578
579 /* Verb ID = 0x701h */
580 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
581
582 reg = RT700_VERB_SET_CONNECT_SEL | nid;
583 ret = regmap_read(rt700->regmap, reg, &val2);
584 if (ret < 0)
585 return ret;
586
587 if (val == val2)
588 change = 0;
589 else
590 change = 1;
591
592 if (change) {
593 reg = RT700_VERB_SET_CONNECT_SEL | nid;
594 regmap_write(rt700->regmap, reg, val);
595 }
596
597 snd_soc_dapm_mux_update_power(dapm, kcontrol,
598 item[0], e, NULL);
599
600 return change;
601 }
602
603 static const char * const adc_mux_text[] = {
604 "MIC2",
605 "LINE1",
606 "LINE2",
607 "DMIC",
608 };
609
610 static SOC_ENUM_SINGLE_DECL(
611 rt700_adc22_enum, SND_SOC_NOPM, 0, adc_mux_text);
612
613 static SOC_ENUM_SINGLE_DECL(
614 rt700_adc23_enum, SND_SOC_NOPM, 0, adc_mux_text);
615
616 static const struct snd_kcontrol_new rt700_adc22_mux =
617 SOC_DAPM_ENUM_EXT("ADC 22 Mux", rt700_adc22_enum,
618 rt700_mux_get, rt700_mux_put);
619
620 static const struct snd_kcontrol_new rt700_adc23_mux =
621 SOC_DAPM_ENUM_EXT("ADC 23 Mux", rt700_adc23_enum,
622 rt700_mux_get, rt700_mux_put);
623
624 static const char * const out_mux_text[] = {
625 "Front",
626 "Surround",
627 };
628
629 static SOC_ENUM_SINGLE_DECL(
630 rt700_hp_enum, SND_SOC_NOPM, 0, out_mux_text);
631
632 static const struct snd_kcontrol_new rt700_hp_mux =
633 SOC_DAPM_ENUM_EXT("HP Mux", rt700_hp_enum,
634 rt700_mux_get, rt700_mux_put);
635
636 static int rt700_dac_front_event(struct snd_soc_dapm_widget *w,
637 struct snd_kcontrol *kcontrol, int event)
638 {
639 struct snd_soc_component *component =
640 snd_soc_dapm_to_component(w->dapm);
641 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
642
643 switch (event) {
644 case SND_SOC_DAPM_POST_PMU:
645 regmap_write(rt700->regmap,
646 RT700_SET_STREAMID_DAC1, 0x10);
647 break;
648 case SND_SOC_DAPM_PRE_PMD:
649 regmap_write(rt700->regmap,
650 RT700_SET_STREAMID_DAC1, 0x00);
651 break;
652 }
653 return 0;
654 }
655
656 static int rt700_dac_surround_event(struct snd_soc_dapm_widget *w,
657 struct snd_kcontrol *kcontrol, int event)
658 {
659 struct snd_soc_component *component =
660 snd_soc_dapm_to_component(w->dapm);
661 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
662
663 switch (event) {
664 case SND_SOC_DAPM_POST_PMU:
665 regmap_write(rt700->regmap,
666 RT700_SET_STREAMID_DAC2, 0x10);
667 break;
668 case SND_SOC_DAPM_PRE_PMD:
669 regmap_write(rt700->regmap,
670 RT700_SET_STREAMID_DAC2, 0x00);
671 break;
672 }
673 return 0;
674 }
675
676 static int rt700_adc_09_event(struct snd_soc_dapm_widget *w,
677 struct snd_kcontrol *kcontrol, int event)
678 {
679 struct snd_soc_component *component =
680 snd_soc_dapm_to_component(w->dapm);
681 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
682
683 switch (event) {
684 case SND_SOC_DAPM_POST_PMU:
685 regmap_write(rt700->regmap,
686 RT700_SET_STREAMID_ADC1, 0x10);
687 break;
688 case SND_SOC_DAPM_PRE_PMD:
689 regmap_write(rt700->regmap,
690 RT700_SET_STREAMID_ADC1, 0x00);
691 break;
692 }
693 return 0;
694 }
695
696 static int rt700_adc_08_event(struct snd_soc_dapm_widget *w,
697 struct snd_kcontrol *kcontrol, int event)
698 {
699 struct snd_soc_component *component =
700 snd_soc_dapm_to_component(w->dapm);
701 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
702
703 switch (event) {
704 case SND_SOC_DAPM_POST_PMU:
705 regmap_write(rt700->regmap,
706 RT700_SET_STREAMID_ADC2, 0x10);
707 break;
708 case SND_SOC_DAPM_PRE_PMD:
709 regmap_write(rt700->regmap,
710 RT700_SET_STREAMID_ADC2, 0x00);
711 break;
712 }
713 return 0;
714 }
715
716 static int rt700_hpo_mux_event(struct snd_soc_dapm_widget *w,
717 struct snd_kcontrol *kcontrol, int event)
718 {
719 struct snd_soc_component *component =
720 snd_soc_dapm_to_component(w->dapm);
721 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
722 unsigned int val_h = (1 << RT700_DIR_OUT_SFT) | (0x3 << 4);
723 unsigned int val_l;
724
725 switch (event) {
726 case SND_SOC_DAPM_POST_PMU:
727 val_l = 0x00;
728 regmap_write(rt700->regmap,
729 RT700_SET_GAIN_HP_H, (val_h << 8 | val_l));
730 break;
731 case SND_SOC_DAPM_PRE_PMD:
732 val_l = (1 << RT700_MUTE_SFT);
733 regmap_write(rt700->regmap,
734 RT700_SET_GAIN_HP_H, (val_h << 8 | val_l));
735 usleep_range(50000, 55000);
736 break;
737 }
738 return 0;
739 }
740
741 static int rt700_spk_pga_event(struct snd_soc_dapm_widget *w,
742 struct snd_kcontrol *kcontrol, int event)
743 {
744 struct snd_soc_component *component =
745 snd_soc_dapm_to_component(w->dapm);
746 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
747 unsigned int val_h = (1 << RT700_DIR_OUT_SFT) | (0x3 << 4);
748 unsigned int val_l;
749
750 switch (event) {
751 case SND_SOC_DAPM_POST_PMU:
752 val_l = 0x00;
753 regmap_write(rt700->regmap,
754 RT700_SET_GAIN_SPK_H, (val_h << 8 | val_l));
755 break;
756 case SND_SOC_DAPM_PRE_PMD:
757 val_l = (1 << RT700_MUTE_SFT);
758 regmap_write(rt700->regmap,
759 RT700_SET_GAIN_SPK_H, (val_h << 8 | val_l));
760 break;
761 }
762 return 0;
763 }
764
765 static const struct snd_soc_dapm_widget rt700_dapm_widgets[] = {
766 SND_SOC_DAPM_OUTPUT("HP"),
767 SND_SOC_DAPM_OUTPUT("SPK"),
768 SND_SOC_DAPM_INPUT("DMIC1"),
769 SND_SOC_DAPM_INPUT("DMIC2"),
770 SND_SOC_DAPM_INPUT("MIC2"),
771 SND_SOC_DAPM_INPUT("LINE1"),
772 SND_SOC_DAPM_INPUT("LINE2"),
773 SND_SOC_DAPM_DAC_E("DAC Front", NULL, SND_SOC_NOPM, 0, 0,
774 rt700_dac_front_event,
775 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
776 SND_SOC_DAPM_DAC_E("DAC Surround", NULL, SND_SOC_NOPM, 0, 0,
777 rt700_dac_surround_event,
778 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
779 SND_SOC_DAPM_MUX_E("HPO Mux", SND_SOC_NOPM, 0, 0, &rt700_hp_mux,
780 rt700_hpo_mux_event,
781 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
782 SND_SOC_DAPM_PGA_E("SPK PGA", SND_SOC_NOPM, 0, 0, NULL, 0,
783 rt700_spk_pga_event,
784 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
785 SND_SOC_DAPM_ADC_E("ADC 09", NULL, SND_SOC_NOPM, 0, 0,
786 rt700_adc_09_event,
787 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
788 SND_SOC_DAPM_ADC_E("ADC 08", NULL, SND_SOC_NOPM, 0, 0,
789 rt700_adc_08_event,
790 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
791 SND_SOC_DAPM_MUX("ADC 22 Mux", SND_SOC_NOPM, 0, 0,
792 &rt700_adc22_mux),
793 SND_SOC_DAPM_MUX("ADC 23 Mux", SND_SOC_NOPM, 0, 0,
794 &rt700_adc23_mux),
795 SND_SOC_DAPM_AIF_IN("DP1RX", "DP1 Playback", 0, SND_SOC_NOPM, 0, 0),
796 SND_SOC_DAPM_AIF_IN("DP3RX", "DP3 Playback", 0, SND_SOC_NOPM, 0, 0),
797 SND_SOC_DAPM_AIF_OUT("DP2TX", "DP2 Capture", 0, SND_SOC_NOPM, 0, 0),
798 SND_SOC_DAPM_AIF_OUT("DP4TX", "DP4 Capture", 0, SND_SOC_NOPM, 0, 0),
799 };
800
801 static const struct snd_soc_dapm_route rt700_audio_map[] = {
802 {"DAC Front", NULL, "DP1RX"},
803 {"DAC Surround", NULL, "DP3RX"},
804 {"DP2TX", NULL, "ADC 09"},
805 {"DP4TX", NULL, "ADC 08"},
806 {"ADC 09", NULL, "ADC 22 Mux"},
807 {"ADC 08", NULL, "ADC 23 Mux"},
808 {"ADC 22 Mux", "DMIC", "DMIC1"},
809 {"ADC 22 Mux", "LINE1", "LINE1"},
810 {"ADC 22 Mux", "LINE2", "LINE2"},
811 {"ADC 22 Mux", "MIC2", "MIC2"},
812 {"ADC 23 Mux", "DMIC", "DMIC2"},
813 {"ADC 23 Mux", "LINE1", "LINE1"},
814 {"ADC 23 Mux", "LINE2", "LINE2"},
815 {"ADC 23 Mux", "MIC2", "MIC2"},
816 {"HPO Mux", "Front", "DAC Front"},
817 {"HPO Mux", "Surround", "DAC Surround"},
818 {"HP", NULL, "HPO Mux"},
819 {"SPK PGA", NULL, "DAC Front"},
820 {"SPK", NULL, "SPK PGA"},
821 };
822
823 static int rt700_probe(struct snd_soc_component *component)
824 {
825 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
826 int ret;
827
828 rt700->component = component;
829
830 if (!rt700->first_hw_init)
831 return 0;
832
833 ret = pm_runtime_resume(component->dev);
834 if (ret < 0 && ret != -EACCES)
835 return ret;
836
837 return 0;
838 }
839
840 static int rt700_set_bias_level(struct snd_soc_component *component,
841 enum snd_soc_bias_level level)
842 {
843 struct snd_soc_dapm_context *dapm =
844 snd_soc_component_get_dapm(component);
845 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
846
847 switch (level) {
848 case SND_SOC_BIAS_PREPARE:
849 if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
850 regmap_write(rt700->regmap,
851 RT700_SET_AUDIO_POWER_STATE,
852 AC_PWRST_D0);
853 }
854 break;
855
856 case SND_SOC_BIAS_STANDBY:
857 regmap_write(rt700->regmap,
858 RT700_SET_AUDIO_POWER_STATE,
859 AC_PWRST_D3);
860 break;
861
862 default:
863 break;
864 }
865 dapm->bias_level = level;
866 return 0;
867 }
868
869 static const struct snd_soc_component_driver soc_codec_dev_rt700 = {
870 .probe = rt700_probe,
871 .set_bias_level = rt700_set_bias_level,
872 .controls = rt700_snd_controls,
873 .num_controls = ARRAY_SIZE(rt700_snd_controls),
874 .dapm_widgets = rt700_dapm_widgets,
875 .num_dapm_widgets = ARRAY_SIZE(rt700_dapm_widgets),
876 .dapm_routes = rt700_audio_map,
877 .num_dapm_routes = ARRAY_SIZE(rt700_audio_map),
878 .set_jack = rt700_set_jack_detect,
879 .endianness = 1,
880 };
881
882 static int rt700_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream,
883 int direction)
884 {
885 snd_soc_dai_dma_data_set(dai, direction, sdw_stream);
886
887 return 0;
888 }
889
890 static void rt700_shutdown(struct snd_pcm_substream *substream,
891 struct snd_soc_dai *dai)
892 {
893 snd_soc_dai_set_dma_data(dai, substream, NULL);
894 }
895
896 static int rt700_pcm_hw_params(struct snd_pcm_substream *substream,
897 struct snd_pcm_hw_params *params,
898 struct snd_soc_dai *dai)
899 {
900 struct snd_soc_component *component = dai->component;
901 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
902 struct sdw_stream_config stream_config = {0};
903 struct sdw_port_config port_config = {0};
904 struct sdw_stream_runtime *sdw_stream;
905 int retval;
906 unsigned int val = 0;
907
908 dev_dbg(dai->dev, "%s %s", __func__, dai->name);
909 sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
910
911 if (!sdw_stream)
912 return -EINVAL;
913
914 if (!rt700->slave)
915 return -EINVAL;
916
917 /* SoundWire specific configuration */
918 snd_sdw_params_to_config(substream, params, &stream_config, &port_config);
919
920 /* This code assumes port 1 for playback and port 2 for capture */
921 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
922 port_config.num = 1;
923 else
924 port_config.num = 2;
925
926 switch (dai->id) {
927 case RT700_AIF1:
928 break;
929 case RT700_AIF2:
930 port_config.num += 2;
931 break;
932 default:
933 dev_err(component->dev, "%s: Invalid DAI id %d\n", __func__, dai->id);
934 return -EINVAL;
935 }
936
937 retval = sdw_stream_add_slave(rt700->slave, &stream_config,
938 &port_config, 1, sdw_stream);
939 if (retval) {
940 dev_err(dai->dev, "%s: Unable to configure port\n", __func__);
941 return retval;
942 }
943
944 if (params_channels(params) <= 16) {
945 /* bit 3:0 Number of Channel */
946 val |= (params_channels(params) - 1);
947 } else {
948 dev_err(component->dev, "%s: Unsupported channels %d\n",
949 __func__, params_channels(params));
950 return -EINVAL;
951 }
952
953 switch (params_width(params)) {
954 /* bit 6:4 Bits per Sample */
955 case 8:
956 break;
957 case 16:
958 val |= (0x1 << 4);
959 break;
960 case 20:
961 val |= (0x2 << 4);
962 break;
963 case 24:
964 val |= (0x3 << 4);
965 break;
966 case 32:
967 val |= (0x4 << 4);
968 break;
969 default:
970 return -EINVAL;
971 }
972
973 /* 48Khz */
974 regmap_write(rt700->regmap, RT700_DAC_FORMAT_H, val);
975 regmap_write(rt700->regmap, RT700_ADC_FORMAT_H, val);
976
977 return retval;
978 }
979
980 static int rt700_pcm_hw_free(struct snd_pcm_substream *substream,
981 struct snd_soc_dai *dai)
982 {
983 struct snd_soc_component *component = dai->component;
984 struct rt700_priv *rt700 = snd_soc_component_get_drvdata(component);
985 struct sdw_stream_runtime *sdw_stream =
986 snd_soc_dai_get_dma_data(dai, substream);
987
988 if (!rt700->slave)
989 return -EINVAL;
990
991 sdw_stream_remove_slave(rt700->slave, sdw_stream);
992 return 0;
993 }
994
995 #define RT700_STEREO_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
996 #define RT700_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
997 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
998
999 static const struct snd_soc_dai_ops rt700_ops = {
1000 .hw_params = rt700_pcm_hw_params,
1001 .hw_free = rt700_pcm_hw_free,
1002 .set_stream = rt700_set_sdw_stream,
1003 .shutdown = rt700_shutdown,
1004 };
1005
1006 static struct snd_soc_dai_driver rt700_dai[] = {
1007 {
1008 .name = "rt700-aif1",
1009 .id = RT700_AIF1,
1010 .playback = {
1011 .stream_name = "DP1 Playback",
1012 .channels_min = 1,
1013 .channels_max = 2,
1014 .rates = RT700_STEREO_RATES,
1015 .formats = RT700_FORMATS,
1016 },
1017 .capture = {
1018 .stream_name = "DP2 Capture",
1019 .channels_min = 1,
1020 .channels_max = 2,
1021 .rates = RT700_STEREO_RATES,
1022 .formats = RT700_FORMATS,
1023 },
1024 .ops = &rt700_ops,
1025 },
1026 {
1027 .name = "rt700-aif2",
1028 .id = RT700_AIF2,
1029 .playback = {
1030 .stream_name = "DP3 Playback",
1031 .channels_min = 1,
1032 .channels_max = 2,
1033 .rates = RT700_STEREO_RATES,
1034 .formats = RT700_FORMATS,
1035 },
1036 .capture = {
1037 .stream_name = "DP4 Capture",
1038 .channels_min = 1,
1039 .channels_max = 2,
1040 .rates = RT700_STEREO_RATES,
1041 .formats = RT700_FORMATS,
1042 },
1043 .ops = &rt700_ops,
1044 },
1045 };
1046
1047 /* Bus clock frequency */
1048 #define RT700_CLK_FREQ_9600000HZ 9600000
1049 #define RT700_CLK_FREQ_12000000HZ 12000000
1050 #define RT700_CLK_FREQ_6000000HZ 6000000
1051 #define RT700_CLK_FREQ_4800000HZ 4800000
1052 #define RT700_CLK_FREQ_2400000HZ 2400000
1053 #define RT700_CLK_FREQ_12288000HZ 12288000
1054
1055 int rt700_clock_config(struct device *dev)
1056 {
1057 struct rt700_priv *rt700 = dev_get_drvdata(dev);
1058 unsigned int clk_freq, value;
1059
1060 clk_freq = (rt700->params.curr_dr_freq >> 1);
1061
1062 switch (clk_freq) {
1063 case RT700_CLK_FREQ_12000000HZ:
1064 value = 0x0;
1065 break;
1066 case RT700_CLK_FREQ_6000000HZ:
1067 value = 0x1;
1068 break;
1069 case RT700_CLK_FREQ_9600000HZ:
1070 value = 0x2;
1071 break;
1072 case RT700_CLK_FREQ_4800000HZ:
1073 value = 0x3;
1074 break;
1075 case RT700_CLK_FREQ_2400000HZ:
1076 value = 0x4;
1077 break;
1078 case RT700_CLK_FREQ_12288000HZ:
1079 value = 0x5;
1080 break;
1081 default:
1082 return -EINVAL;
1083 }
1084
1085 regmap_write(rt700->regmap, 0xe0, value);
1086 regmap_write(rt700->regmap, 0xf0, value);
1087
1088 dev_dbg(dev, "%s complete, clk_freq=%d\n", __func__, clk_freq);
1089
1090 return 0;
1091 }
1092
1093 int rt700_init(struct device *dev, struct regmap *sdw_regmap,
1094 struct regmap *regmap, struct sdw_slave *slave)
1095
1096 {
1097 struct rt700_priv *rt700;
1098 int ret;
1099
1100 rt700 = devm_kzalloc(dev, sizeof(*rt700), GFP_KERNEL);
1101 if (!rt700)
1102 return -ENOMEM;
1103
1104 dev_set_drvdata(dev, rt700);
1105 rt700->slave = slave;
1106 rt700->sdw_regmap = sdw_regmap;
1107 rt700->regmap = regmap;
1108
1109 regcache_cache_only(rt700->regmap, true);
1110
1111 mutex_init(&rt700->disable_irq_lock);
1112
1113 INIT_DELAYED_WORK(&rt700->jack_detect_work,
1114 rt700_jack_detect_handler);
1115 INIT_DELAYED_WORK(&rt700->jack_btn_check_work,
1116 rt700_btn_check_handler);
1117
1118 /*
1119 * Mark hw_init to false
1120 * HW init will be performed when device reports present
1121 */
1122 rt700->hw_init = false;
1123 rt700->first_hw_init = false;
1124
1125 ret = devm_snd_soc_register_component(dev,
1126 &soc_codec_dev_rt700,
1127 rt700_dai,
1128 ARRAY_SIZE(rt700_dai));
1129 if (ret < 0)
1130 return ret;
1131
1132 /* set autosuspend parameters */
1133 pm_runtime_set_autosuspend_delay(dev, 3000);
1134 pm_runtime_use_autosuspend(dev);
1135
1136 /* make sure the device does not suspend immediately */
1137 pm_runtime_mark_last_busy(dev);
1138
1139 pm_runtime_enable(dev);
1140
1141 /* important note: the device is NOT tagged as 'active' and will remain
1142 * 'suspended' until the hardware is enumerated/initialized. This is required
1143 * to make sure the ASoC framework use of pm_runtime_get_sync() does not silently
1144 * fail with -EACCESS because of race conditions between card creation and enumeration
1145 */
1146 dev_dbg(&slave->dev, "%s\n", __func__);
1147
1148 return 0;
1149 }
1150
1151 int rt700_io_init(struct device *dev, struct sdw_slave *slave)
1152 {
1153 struct rt700_priv *rt700 = dev_get_drvdata(dev);
1154
1155 rt700->disable_irq = false;
1156
1157 if (rt700->hw_init)
1158 return 0;
1159
1160 regcache_cache_only(rt700->regmap, false);
1161 if (rt700->first_hw_init)
1162 regcache_cache_bypass(rt700->regmap, true);
1163
1164 /*
1165 * PM runtime is only enabled when a Slave reports as Attached
1166 */
1167 if (!rt700->first_hw_init)
1168 /* PM runtime status is marked as 'active' only when a Slave reports as Attached */
1169 pm_runtime_set_active(&slave->dev);
1170
1171 pm_runtime_get_noresume(&slave->dev);
1172
1173 /* reset */
1174 regmap_write(rt700->regmap, 0xff01, 0x0000);
1175 regmap_write(rt700->regmap, 0x7520, 0x001a);
1176 regmap_write(rt700->regmap, 0x7420, 0xc003);
1177
1178 /* power on */
1179 regmap_write(rt700->regmap, RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D0);
1180 /* Set Pin Widget */
1181 regmap_write(rt700->regmap, RT700_SET_PIN_HP, 0x40);
1182 regmap_write(rt700->regmap, RT700_SET_PIN_SPK, 0x40);
1183 regmap_write(rt700->regmap, RT700_SET_EAPD_SPK, RT700_EAPD_HIGH);
1184 regmap_write(rt700->regmap, RT700_SET_PIN_DMIC1, 0x20);
1185 regmap_write(rt700->regmap, RT700_SET_PIN_DMIC2, 0x20);
1186 regmap_write(rt700->regmap, RT700_SET_PIN_MIC2, 0x20);
1187
1188 /* Set Configuration Default */
1189 regmap_write(rt700->regmap, 0x4f12, 0x91);
1190 regmap_write(rt700->regmap, 0x4e12, 0xd6);
1191 regmap_write(rt700->regmap, 0x4d12, 0x11);
1192 regmap_write(rt700->regmap, 0x4c12, 0x20);
1193 regmap_write(rt700->regmap, 0x4f13, 0x91);
1194 regmap_write(rt700->regmap, 0x4e13, 0xd6);
1195 regmap_write(rt700->regmap, 0x4d13, 0x11);
1196 regmap_write(rt700->regmap, 0x4c13, 0x21);
1197
1198 regmap_write(rt700->regmap, 0x4f19, 0x02);
1199 regmap_write(rt700->regmap, 0x4e19, 0xa1);
1200 regmap_write(rt700->regmap, 0x4d19, 0x90);
1201 regmap_write(rt700->regmap, 0x4c19, 0x80);
1202
1203 /* Enable Line2 */
1204 regmap_write(rt700->regmap, 0x371b, 0x40);
1205 regmap_write(rt700->regmap, 0x731b, 0xb0);
1206 regmap_write(rt700->regmap, 0x839b, 0x00);
1207
1208 /* Set index */
1209 rt700_index_write(rt700->regmap, 0x4a, 0x201b);
1210 rt700_index_write(rt700->regmap, 0x45, 0x5089);
1211 rt700_index_write(rt700->regmap, 0x6b, 0x5064);
1212 rt700_index_write(rt700->regmap, 0x48, 0xd249);
1213
1214 /* Finish Initial Settings, set power to D3 */
1215 regmap_write(rt700->regmap, RT700_SET_AUDIO_POWER_STATE, AC_PWRST_D3);
1216
1217 /*
1218 * if set_jack callback occurred early than io_init,
1219 * we set up the jack detection function now
1220 */
1221 if (rt700->hs_jack)
1222 rt700_jack_init(rt700);
1223
1224 if (rt700->first_hw_init) {
1225 regcache_cache_bypass(rt700->regmap, false);
1226 regcache_mark_dirty(rt700->regmap);
1227 } else
1228 rt700->first_hw_init = true;
1229
1230 /* Mark Slave initialization complete */
1231 rt700->hw_init = true;
1232
1233 pm_runtime_mark_last_busy(&slave->dev);
1234 pm_runtime_put_autosuspend(&slave->dev);
1235
1236 dev_dbg(&slave->dev, "%s hw_init complete\n", __func__);
1237
1238 return 0;
1239 }
1240
1241 MODULE_DESCRIPTION("ASoC RT700 driver SDW");
1242 MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
1243 MODULE_LICENSE("GPL v2");
1244
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