1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // CS42L43 CODEC driver jack handling
4 //
5 // Copyright (C) 2022-2023 Cirrus Logic, Inc. and
6 // Cirrus Logic International Semiconductor Ltd.
7
8 #include <linux/build_bug.h>
9 #include <linux/completion.h>
10 #include <linux/delay.h>
11 #include <linux/errno.h>
12 #include <linux/irq.h>
13 #include <linux/jiffies.h>
14 #include <linux/mfd/cs42l43.h>
15 #include <linux/mfd/cs42l43-regs.h>
16 #include <linux/mutex.h>
17 #include <linux/pm_runtime.h>
18 #include <linux/property.h>
19 #include <linux/regmap.h>
20 #include <linux/time.h>
21 #include <linux/workqueue.h>
22 #include <sound/control.h>
23 #include <sound/jack.h>
24 #include <sound/pcm.h>
25 #include <sound/pcm_params.h>
26 #include <sound/soc-component.h>
27 #include <sound/soc-jack.h>
28 #include <sound/soc.h>
29
30 #include "cs42l43.h"
31
32 static const unsigned int cs42l43_accdet_us[] = {
33 20, 100, 1000, 10000, 50000, 75000, 100000, 200000,
34 };
35
36 static const unsigned int cs42l43_accdet_db_ms[] = {
37 0, 125, 250, 500, 750, 1000, 1250, 1500,
38 };
39
40 static const unsigned int cs42l43_accdet_ramp_ms[] = { 10, 40, 90, 170 };
41
42 static const unsigned int cs42l43_accdet_bias_sense[] = {
43 14, 24, 43, 52, 61, 71, 90, 99, 0,
44 };
45
cs42l43_find_index(struct cs42l43_codec * priv,const char * const prop,unsigned int defval,unsigned int * val,const unsigned int * values,const int nvalues)46 static int cs42l43_find_index(struct cs42l43_codec *priv, const char * const prop,
47 unsigned int defval, unsigned int *val,
48 const unsigned int *values, const int nvalues)
49 {
50 struct cs42l43 *cs42l43 = priv->core;
51 int i, ret;
52
53 ret = device_property_read_u32(cs42l43->dev, prop, &defval);
54 if (ret != -EINVAL && ret < 0) {
55 dev_err(priv->dev, "Property %s malformed: %d\n", prop, ret);
56 return ret;
57 }
58
59 if (val)
60 *val = defval;
61
62 for (i = 0; i < nvalues; i++)
63 if (defval == values[i])
64 return i;
65
66 dev_err(priv->dev, "Invalid value for property %s: %d\n", prop, defval);
67 return -EINVAL;
68 }
69
cs42l43_set_jack(struct snd_soc_component * component,struct snd_soc_jack * jack,void * d)70 int cs42l43_set_jack(struct snd_soc_component *component,
71 struct snd_soc_jack *jack, void *d)
72 {
73 struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
74 struct cs42l43 *cs42l43 = priv->core;
75 /* This tip sense invert is always set, HW wants an inverted signal */
76 unsigned int tip_deb = CS42L43_TIPSENSE_INV_MASK;
77 unsigned int hs2 = 0x2 << CS42L43_HSDET_MODE_SHIFT;
78 unsigned int autocontrol = 0, pdncntl = 0;
79 int ret;
80
81 dev_dbg(priv->dev, "Configure accessory detect\n");
82
83 ret = pm_runtime_resume_and_get(priv->dev);
84 if (ret) {
85 dev_err(priv->dev, "Failed to resume for jack config: %d\n", ret);
86 return ret;
87 }
88
89 mutex_lock(&priv->jack_lock);
90
91 priv->jack_hp = jack;
92
93 if (!jack)
94 goto done;
95
96 ret = device_property_count_u32(cs42l43->dev, "cirrus,buttons-ohms");
97 if (ret != -EINVAL) {
98 if (ret < 0) {
99 dev_err(priv->dev, "Property cirrus,buttons-ohms malformed: %d\n",
100 ret);
101 goto error;
102 }
103
104 if (ret > CS42L43_N_BUTTONS) {
105 ret = -EINVAL;
106 dev_err(priv->dev, "Property cirrus,buttons-ohms too many entries\n");
107 goto error;
108 }
109
110 ret = device_property_read_u32_array(cs42l43->dev, "cirrus,buttons-ohms",
111 priv->buttons, ret);
112 if (ret < 0) {
113 dev_err(priv->dev, "Property cirrus,button-ohms malformed: %d\n",
114 ret);
115 goto error;
116 }
117 } else {
118 priv->buttons[0] = 70;
119 priv->buttons[1] = 185;
120 priv->buttons[2] = 355;
121 priv->buttons[3] = 735;
122 }
123
124 ret = cs42l43_find_index(priv, "cirrus,detect-us", 50000, &priv->detect_us,
125 cs42l43_accdet_us, ARRAY_SIZE(cs42l43_accdet_us));
126 if (ret < 0)
127 goto error;
128
129 hs2 |= ret << CS42L43_AUTO_HSDET_TIME_SHIFT;
130
131 priv->bias_low = device_property_read_bool(cs42l43->dev, "cirrus,bias-low");
132
133 ret = cs42l43_find_index(priv, "cirrus,bias-ramp-ms", 170,
134 &priv->bias_ramp_ms, cs42l43_accdet_ramp_ms,
135 ARRAY_SIZE(cs42l43_accdet_ramp_ms));
136 if (ret < 0)
137 goto error;
138
139 hs2 |= ret << CS42L43_HSBIAS_RAMP_SHIFT;
140
141 ret = cs42l43_find_index(priv, "cirrus,bias-sense-microamp", 14,
142 &priv->bias_sense_ua, cs42l43_accdet_bias_sense,
143 ARRAY_SIZE(cs42l43_accdet_bias_sense));
144 if (ret < 0)
145 goto error;
146
147 if (priv->bias_sense_ua)
148 autocontrol |= ret << CS42L43_HSBIAS_SENSE_TRIP_SHIFT;
149
150 if (!device_property_read_bool(cs42l43->dev, "cirrus,button-automute"))
151 autocontrol |= CS42L43_S0_AUTO_ADCMUTE_DISABLE_MASK;
152
153 ret = device_property_read_u32(cs42l43->dev, "cirrus,tip-debounce-ms",
154 &priv->tip_debounce_ms);
155 if (ret < 0 && ret != -EINVAL) {
156 dev_err(priv->dev, "Property cirrus,tip-debounce-ms malformed: %d\n", ret);
157 goto error;
158 }
159
160 /* This tip sense invert is set normally, as TIPSENSE_INV already inverted */
161 if (device_property_read_bool(cs42l43->dev, "cirrus,tip-invert"))
162 autocontrol |= 0x1 << CS42L43_JACKDET_INV_SHIFT;
163
164 if (device_property_read_bool(cs42l43->dev, "cirrus,tip-disable-pullup"))
165 autocontrol |= 0x1 << CS42L43_JACKDET_MODE_SHIFT;
166 else
167 autocontrol |= 0x3 << CS42L43_JACKDET_MODE_SHIFT;
168
169 ret = cs42l43_find_index(priv, "cirrus,tip-fall-db-ms", 500,
170 &priv->tip_fall_db_ms, cs42l43_accdet_db_ms,
171 ARRAY_SIZE(cs42l43_accdet_db_ms));
172 if (ret < 0)
173 goto error;
174
175 tip_deb |= ret << CS42L43_TIPSENSE_FALLING_DB_TIME_SHIFT;
176
177 ret = cs42l43_find_index(priv, "cirrus,tip-rise-db-ms", 500,
178 &priv->tip_rise_db_ms, cs42l43_accdet_db_ms,
179 ARRAY_SIZE(cs42l43_accdet_db_ms));
180 if (ret < 0)
181 goto error;
182
183 tip_deb |= ret << CS42L43_TIPSENSE_RISING_DB_TIME_SHIFT;
184
185 if (device_property_read_bool(cs42l43->dev, "cirrus,use-ring-sense")) {
186 unsigned int ring_deb = 0;
187
188 priv->use_ring_sense = true;
189
190 /* HW wants an inverted signal, so invert the invert */
191 if (!device_property_read_bool(cs42l43->dev, "cirrus,ring-invert"))
192 ring_deb |= CS42L43_RINGSENSE_INV_MASK;
193
194 if (!device_property_read_bool(cs42l43->dev,
195 "cirrus,ring-disable-pullup"))
196 ring_deb |= CS42L43_RINGSENSE_PULLUP_PDNB_MASK;
197
198 ret = cs42l43_find_index(priv, "cirrus,ring-fall-db-ms", 500,
199 NULL, cs42l43_accdet_db_ms,
200 ARRAY_SIZE(cs42l43_accdet_db_ms));
201 if (ret < 0)
202 goto error;
203
204 ring_deb |= ret << CS42L43_RINGSENSE_FALLING_DB_TIME_SHIFT;
205
206 ret = cs42l43_find_index(priv, "cirrus,ring-rise-db-ms", 500,
207 NULL, cs42l43_accdet_db_ms,
208 ARRAY_SIZE(cs42l43_accdet_db_ms));
209 if (ret < 0)
210 goto error;
211
212 ring_deb |= ret << CS42L43_RINGSENSE_RISING_DB_TIME_SHIFT;
213 pdncntl |= CS42L43_RING_SENSE_EN_MASK;
214
215 regmap_update_bits(cs42l43->regmap, CS42L43_RINGSENSE_DEB_CTRL,
216 CS42L43_RINGSENSE_INV_MASK |
217 CS42L43_RINGSENSE_PULLUP_PDNB_MASK |
218 CS42L43_RINGSENSE_FALLING_DB_TIME_MASK |
219 CS42L43_RINGSENSE_RISING_DB_TIME_MASK,
220 ring_deb);
221 }
222
223 regmap_update_bits(cs42l43->regmap, CS42L43_TIPSENSE_DEB_CTRL,
224 CS42L43_TIPSENSE_INV_MASK |
225 CS42L43_TIPSENSE_FALLING_DB_TIME_MASK |
226 CS42L43_TIPSENSE_RISING_DB_TIME_MASK, tip_deb);
227 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
228 CS42L43_HSBIAS_RAMP_MASK | CS42L43_HSDET_MODE_MASK |
229 CS42L43_AUTO_HSDET_TIME_MASK, hs2);
230
231 done:
232 ret = 0;
233
234 regmap_update_bits(cs42l43->regmap, CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
235 CS42L43_JACKDET_MODE_MASK | CS42L43_S0_AUTO_ADCMUTE_DISABLE_MASK |
236 CS42L43_HSBIAS_SENSE_TRIP_MASK, autocontrol);
237 regmap_update_bits(cs42l43->regmap, CS42L43_PDNCNTL,
238 CS42L43_RING_SENSE_EN_MASK, pdncntl);
239
240 dev_dbg(priv->dev, "Successfully configured accessory detect\n");
241
242 error:
243 mutex_unlock(&priv->jack_lock);
244
245 pm_runtime_put_autosuspend(priv->dev);
246
247 return ret;
248 }
249
cs42l43_start_hs_bias(struct cs42l43_codec * priv,bool type_detect)250 static void cs42l43_start_hs_bias(struct cs42l43_codec *priv, bool type_detect)
251 {
252 struct cs42l43 *cs42l43 = priv->core;
253 unsigned int val = 0x3 << CS42L43_HSBIAS_MODE_SHIFT;
254
255 dev_dbg(priv->dev, "Start headset bias\n");
256
257 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
258 CS42L43_HS_CLAMP_DISABLE_MASK, CS42L43_HS_CLAMP_DISABLE_MASK);
259
260 if (!type_detect) {
261 if (priv->bias_low)
262 val = 0x2 << CS42L43_HSBIAS_MODE_SHIFT;
263
264 if (priv->bias_sense_ua)
265 regmap_update_bits(cs42l43->regmap,
266 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
267 CS42L43_HSBIAS_SENSE_EN_MASK |
268 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK,
269 CS42L43_HSBIAS_SENSE_EN_MASK |
270 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK);
271 }
272
273 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
274 CS42L43_HSBIAS_MODE_MASK, val);
275
276 msleep(priv->bias_ramp_ms);
277 }
278
cs42l43_stop_hs_bias(struct cs42l43_codec * priv)279 static void cs42l43_stop_hs_bias(struct cs42l43_codec *priv)
280 {
281 struct cs42l43 *cs42l43 = priv->core;
282
283 dev_dbg(priv->dev, "Stop headset bias\n");
284
285 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
286 CS42L43_HSBIAS_MODE_MASK, 0x1 << CS42L43_HSBIAS_MODE_SHIFT);
287
288 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
289 CS42L43_HS_CLAMP_DISABLE_MASK, 0);
290
291 if (priv->bias_sense_ua) {
292 regmap_update_bits(cs42l43->regmap,
293 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
294 CS42L43_HSBIAS_SENSE_EN_MASK |
295 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK, 0);
296 }
297 }
298
cs42l43_bias_detect_clamp(int irq,void * data)299 irqreturn_t cs42l43_bias_detect_clamp(int irq, void *data)
300 {
301 struct cs42l43_codec *priv = data;
302
303 queue_delayed_work(system_wq, &priv->bias_sense_timeout,
304 msecs_to_jiffies(1000));
305
306 return IRQ_HANDLED;
307 }
308
309 #define CS42L43_JACK_PRESENT 0x3
310 #define CS42L43_JACK_ABSENT 0x0
311
312 #define CS42L43_JACK_OPTICAL (SND_JACK_MECHANICAL | SND_JACK_AVOUT)
313 #define CS42L43_JACK_HEADPHONE (SND_JACK_MECHANICAL | SND_JACK_HEADPHONE)
314 #define CS42L43_JACK_HEADSET (SND_JACK_MECHANICAL | SND_JACK_HEADSET)
315 #define CS42L43_JACK_LINEOUT (SND_JACK_MECHANICAL | SND_JACK_LINEOUT)
316 #define CS42L43_JACK_LINEIN (SND_JACK_MECHANICAL | SND_JACK_LINEIN)
317 #define CS42L43_JACK_EXTENSION (SND_JACK_MECHANICAL)
318 #define CS42L43_JACK_BUTTONS (SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2 | \
319 SND_JACK_BTN_3 | SND_JACK_BTN_4 | SND_JACK_BTN_5)
320
cs42l43_jack_present(struct cs42l43_codec * priv)321 static inline bool cs42l43_jack_present(struct cs42l43_codec *priv)
322 {
323 struct cs42l43 *cs42l43 = priv->core;
324 unsigned int sts = 0;
325
326 regmap_read(cs42l43->regmap, CS42L43_TIP_RING_SENSE_INTERRUPT_STATUS, &sts);
327
328 sts = (sts >> CS42L43_TIPSENSE_PLUG_DB_STS_SHIFT) & CS42L43_JACK_PRESENT;
329
330 return sts == CS42L43_JACK_PRESENT;
331 }
332
cs42l43_start_button_detect(struct cs42l43_codec * priv)333 static void cs42l43_start_button_detect(struct cs42l43_codec *priv)
334 {
335 struct cs42l43 *cs42l43 = priv->core;
336 unsigned int val = 0x3 << CS42L43_BUTTON_DETECT_MODE_SHIFT;
337
338 dev_dbg(priv->dev, "Start button detect\n");
339
340 priv->button_detect_running = true;
341
342 if (priv->bias_low)
343 val = 0x1 << CS42L43_BUTTON_DETECT_MODE_SHIFT;
344
345 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
346 CS42L43_BUTTON_DETECT_MODE_MASK |
347 CS42L43_MIC_LVL_DET_DISABLE_MASK, val);
348 }
349
cs42l43_stop_button_detect(struct cs42l43_codec * priv)350 static void cs42l43_stop_button_detect(struct cs42l43_codec *priv)
351 {
352 struct cs42l43 *cs42l43 = priv->core;
353
354 dev_dbg(priv->dev, "Stop button detect\n");
355
356 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
357 CS42L43_BUTTON_DETECT_MODE_MASK |
358 CS42L43_MIC_LVL_DET_DISABLE_MASK,
359 CS42L43_MIC_LVL_DET_DISABLE_MASK);
360
361 priv->button_detect_running = false;
362 }
363
364 #define CS42L43_BUTTON_COMB_US 11000
365 #define CS42L43_BUTTON_COMB_MAX 512
366 #define CS42L43_BUTTON_ROUT 2210
367
cs42l43_button_press(int irq,void * data)368 irqreturn_t cs42l43_button_press(int irq, void *data)
369 {
370 struct cs42l43_codec *priv = data;
371 struct cs42l43 *cs42l43 = priv->core;
372 irqreturn_t iret = IRQ_NONE;
373 unsigned int buttons = 0;
374 unsigned int val = 0;
375 int i, ret;
376
377 ret = pm_runtime_resume_and_get(priv->dev);
378 if (ret) {
379 dev_err(priv->dev, "Failed to resume for button press: %d\n", ret);
380 return iret;
381 }
382
383 mutex_lock(&priv->jack_lock);
384
385 if (!priv->button_detect_running) {
386 dev_dbg(priv->dev, "Spurious button press IRQ\n");
387 goto error;
388 }
389
390 // Wait for 2 full cycles of comb filter to ensure good reading
391 usleep_range(2 * CS42L43_BUTTON_COMB_US, 2 * CS42L43_BUTTON_COMB_US + 50);
392
393 regmap_read(cs42l43->regmap, CS42L43_DETECT_STATUS_1, &val);
394
395 /* Bail if jack removed, the button is irrelevant and likely invalid */
396 if (!cs42l43_jack_present(priv)) {
397 dev_dbg(priv->dev, "Button ignored due to removal\n");
398 goto error;
399 }
400
401 if (val & CS42L43_HSBIAS_CLAMP_STS_MASK) {
402 dev_dbg(priv->dev, "Button ignored due to bias sense\n");
403 goto error;
404 }
405
406 val = (val & CS42L43_HSDET_DC_STS_MASK) >> CS42L43_HSDET_DC_STS_SHIFT;
407 val = ((CS42L43_BUTTON_COMB_MAX << 20) / (val + 1)) - (1 << 20);
408 if (val)
409 val = (CS42L43_BUTTON_ROUT << 20) / val;
410 else
411 val = UINT_MAX;
412
413 for (i = 0; i < CS42L43_N_BUTTONS; i++) {
414 if (val < priv->buttons[i]) {
415 buttons = SND_JACK_BTN_0 >> i;
416 dev_dbg(priv->dev, "Detected button %d at %d Ohms\n", i, val);
417 break;
418 }
419 }
420
421 if (!buttons)
422 dev_dbg(priv->dev, "Unrecognised button: %d Ohms\n", val);
423
424 snd_soc_jack_report(priv->jack_hp, buttons, CS42L43_JACK_BUTTONS);
425
426 iret = IRQ_HANDLED;
427
428 error:
429 mutex_unlock(&priv->jack_lock);
430
431 pm_runtime_put_autosuspend(priv->dev);
432
433 return iret;
434 }
435
cs42l43_button_release(int irq,void * data)436 irqreturn_t cs42l43_button_release(int irq, void *data)
437 {
438 struct cs42l43_codec *priv = data;
439 irqreturn_t iret = IRQ_NONE;
440 int ret;
441
442 ret = pm_runtime_resume_and_get(priv->dev);
443 if (ret) {
444 dev_err(priv->dev, "Failed to resume for button release: %d\n", ret);
445 return iret;
446 }
447
448 mutex_lock(&priv->jack_lock);
449
450 if (priv->button_detect_running) {
451 dev_dbg(priv->dev, "Button release IRQ\n");
452
453 snd_soc_jack_report(priv->jack_hp, 0, CS42L43_JACK_BUTTONS);
454
455 iret = IRQ_HANDLED;
456 } else {
457 dev_dbg(priv->dev, "Spurious button release IRQ\n");
458 }
459
460 mutex_unlock(&priv->jack_lock);
461
462 pm_runtime_put_autosuspend(priv->dev);
463
464 return iret;
465 }
466
cs42l43_bias_sense_timeout(struct work_struct * work)467 void cs42l43_bias_sense_timeout(struct work_struct *work)
468 {
469 struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
470 bias_sense_timeout.work);
471 struct cs42l43 *cs42l43 = priv->core;
472 int ret;
473
474 ret = pm_runtime_resume_and_get(priv->dev);
475 if (ret) {
476 dev_err(priv->dev, "Failed to resume for bias sense: %d\n", ret);
477 return;
478 }
479
480 mutex_lock(&priv->jack_lock);
481
482 if (cs42l43_jack_present(priv) && priv->button_detect_running) {
483 dev_dbg(priv->dev, "Bias sense timeout out, restore bias\n");
484
485 regmap_update_bits(cs42l43->regmap,
486 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
487 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK, 0);
488 regmap_update_bits(cs42l43->regmap,
489 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
490 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK,
491 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK);
492 }
493
494 mutex_unlock(&priv->jack_lock);
495
496 pm_runtime_put_autosuspend(priv->dev);
497 }
498
cs42l43_start_load_detect(struct cs42l43_codec * priv)499 static void cs42l43_start_load_detect(struct cs42l43_codec *priv)
500 {
501 struct cs42l43 *cs42l43 = priv->core;
502
503 dev_dbg(priv->dev, "Start load detect\n");
504
505 snd_soc_dapm_mutex_lock(snd_soc_component_get_dapm(priv->component));
506
507 priv->load_detect_running = true;
508
509 if (priv->hp_ena && !priv->hp_ilimited) {
510 unsigned long time_left;
511
512 reinit_completion(&priv->hp_shutdown);
513
514 regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN8,
515 CS42L43_HP_EN_MASK, 0);
516
517 time_left = wait_for_completion_timeout(&priv->hp_shutdown,
518 msecs_to_jiffies(CS42L43_HP_TIMEOUT_MS));
519 if (!time_left)
520 dev_err(priv->dev, "Load detect HP power down timed out\n");
521 }
522
523 regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN3,
524 CS42L43_ADC1_EN_MASK | CS42L43_ADC2_EN_MASK, 0);
525 regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG2, CS42L43_HP_HPF_EN_MASK, 0);
526 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
527 CS42L43_HSBIAS_MODE_MASK, 0);
528 regmap_update_bits(cs42l43->regmap, CS42L43_CTRL,
529 CS42L43_ADPTPWR_MODE_MASK, 0x4 << CS42L43_ADPTPWR_MODE_SHIFT);
530 regmap_update_bits(cs42l43->regmap, CS42L43_PGAVOL,
531 CS42L43_HP_DIG_VOL_RAMP_MASK | CS42L43_HP_ANA_VOL_RAMP_MASK, 0x6);
532 regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG1,
533 CS42L43_HP_MSTR_VOL_CTRL_EN_MASK, 0);
534
535 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
536 CS42L43_HS_CLAMP_DISABLE_MASK, CS42L43_HS_CLAMP_DISABLE_MASK);
537
538 regmap_update_bits(cs42l43->regmap, CS42L43_LOADDETENA,
539 CS42L43_HPLOAD_DET_EN_MASK,
540 CS42L43_HPLOAD_DET_EN_MASK);
541
542 snd_soc_dapm_mutex_unlock(snd_soc_component_get_dapm(priv->component));
543 }
544
cs42l43_stop_load_detect(struct cs42l43_codec * priv)545 static void cs42l43_stop_load_detect(struct cs42l43_codec *priv)
546 {
547 struct cs42l43 *cs42l43 = priv->core;
548
549 dev_dbg(priv->dev, "Stop load detect\n");
550
551 snd_soc_dapm_mutex_lock(snd_soc_component_get_dapm(priv->component));
552
553 regmap_update_bits(cs42l43->regmap, CS42L43_LOADDETENA,
554 CS42L43_HPLOAD_DET_EN_MASK, 0);
555 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
556 CS42L43_HS_CLAMP_DISABLE_MASK, 0);
557 regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG1,
558 CS42L43_HP_MSTR_VOL_CTRL_EN_MASK,
559 CS42L43_HP_MSTR_VOL_CTRL_EN_MASK);
560 regmap_update_bits(cs42l43->regmap, CS42L43_PGAVOL,
561 CS42L43_HP_DIG_VOL_RAMP_MASK | CS42L43_HP_ANA_VOL_RAMP_MASK,
562 0x4 << CS42L43_HP_DIG_VOL_RAMP_SHIFT);
563 regmap_update_bits(cs42l43->regmap, CS42L43_CTRL,
564 CS42L43_ADPTPWR_MODE_MASK, 0x7 << CS42L43_ADPTPWR_MODE_SHIFT);
565 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
566 CS42L43_HSBIAS_MODE_MASK, 0x1 << CS42L43_HSBIAS_MODE_SHIFT);
567 regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG2,
568 CS42L43_HP_HPF_EN_MASK, CS42L43_HP_HPF_EN_MASK);
569
570 regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN3,
571 CS42L43_ADC1_EN_MASK | CS42L43_ADC2_EN_MASK,
572 priv->adc_ena);
573
574 if (priv->hp_ena && !priv->hp_ilimited) {
575 unsigned long time_left;
576
577 reinit_completion(&priv->hp_startup);
578
579 regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN8,
580 CS42L43_HP_EN_MASK, priv->hp_ena);
581
582 time_left = wait_for_completion_timeout(&priv->hp_startup,
583 msecs_to_jiffies(CS42L43_HP_TIMEOUT_MS));
584 if (!time_left)
585 dev_err(priv->dev, "Load detect HP restore timed out\n");
586 }
587
588 priv->load_detect_running = false;
589
590 snd_soc_dapm_mutex_unlock(snd_soc_component_get_dapm(priv->component));
591 }
592
cs42l43_run_load_detect(struct cs42l43_codec * priv,bool mic)593 static int cs42l43_run_load_detect(struct cs42l43_codec *priv, bool mic)
594 {
595 struct cs42l43 *cs42l43 = priv->core;
596 unsigned int val = 0;
597 unsigned long time_left;
598
599 reinit_completion(&priv->load_detect);
600
601 cs42l43_start_load_detect(priv);
602 time_left = wait_for_completion_timeout(&priv->load_detect,
603 msecs_to_jiffies(CS42L43_LOAD_TIMEOUT_MS));
604 cs42l43_stop_load_detect(priv);
605
606 if (!time_left)
607 return -ETIMEDOUT;
608
609 regmap_read(cs42l43->regmap, CS42L43_LOADDETRESULTS, &val);
610
611 dev_dbg(priv->dev, "Headphone load detect: 0x%x\n", val);
612
613 /* Bail if jack removed, the load is irrelevant and likely invalid */
614 if (!cs42l43_jack_present(priv))
615 return -ENODEV;
616
617 if (mic) {
618 cs42l43_start_hs_bias(priv, false);
619 cs42l43_start_button_detect(priv);
620
621 return CS42L43_JACK_HEADSET;
622 }
623
624 switch (val & CS42L43_AMP3_RES_DET_MASK) {
625 case 0x0: // low impedance
626 case 0x1: // high impedance
627 return CS42L43_JACK_HEADPHONE;
628 case 0x2: // lineout
629 case 0x3: // Open circuit
630 return CS42L43_JACK_LINEOUT;
631 default:
632 return -EINVAL;
633 }
634 }
635
cs42l43_run_type_detect(struct cs42l43_codec * priv)636 static int cs42l43_run_type_detect(struct cs42l43_codec *priv)
637 {
638 struct cs42l43 *cs42l43 = priv->core;
639 int timeout_ms = ((2 * priv->detect_us) / USEC_PER_MSEC) + 200;
640 unsigned int type = 0xff;
641 unsigned long time_left;
642
643 reinit_completion(&priv->type_detect);
644
645 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL,
646 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_VAL_MASK,
647 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_VAL_MASK);
648
649 cs42l43_start_hs_bias(priv, true);
650 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
651 CS42L43_HSDET_MODE_MASK, 0x3 << CS42L43_HSDET_MODE_SHIFT);
652
653 time_left = wait_for_completion_timeout(&priv->type_detect,
654 msecs_to_jiffies(timeout_ms));
655
656 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
657 CS42L43_HSDET_MODE_MASK, 0x2 << CS42L43_HSDET_MODE_SHIFT);
658 cs42l43_stop_hs_bias(priv);
659
660 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL,
661 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_VAL_MASK, 0);
662
663 if (!time_left)
664 return -ETIMEDOUT;
665
666 regmap_read(cs42l43->regmap, CS42L43_HS_STAT, &type);
667
668 dev_dbg(priv->dev, "Type detect: 0x%x\n", type);
669
670 /* Bail if jack removed, the type is irrelevant and likely invalid */
671 if (!cs42l43_jack_present(priv))
672 return -ENODEV;
673
674 switch (type & CS42L43_HSDET_TYPE_STS_MASK) {
675 case 0x0: // CTIA
676 case 0x1: // OMTP
677 return cs42l43_run_load_detect(priv, true);
678 case 0x2: // 3-pole
679 return cs42l43_run_load_detect(priv, false);
680 case 0x3: // Open-circuit
681 return CS42L43_JACK_EXTENSION;
682 default:
683 return -EINVAL;
684 }
685 }
686
cs42l43_clear_jack(struct cs42l43_codec * priv)687 static void cs42l43_clear_jack(struct cs42l43_codec *priv)
688 {
689 struct cs42l43 *cs42l43 = priv->core;
690
691 cs42l43_stop_button_detect(priv);
692 cs42l43_stop_hs_bias(priv);
693
694 regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL1,
695 CS42L43_PGA_WIDESWING_MODE_EN_MASK, 0);
696 regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL2,
697 CS42L43_PGA_WIDESWING_MODE_EN_MASK, 0);
698 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CTRL,
699 CS42L43_JACK_STEREO_CONFIG_MASK, 0);
700 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL,
701 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
702 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK);
703 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
704 CS42L43_HSDET_MODE_MASK | CS42L43_HSDET_MANUAL_MODE_MASK,
705 0x2 << CS42L43_HSDET_MODE_SHIFT);
706
707 snd_soc_jack_report(priv->jack_hp, 0, 0xFFFF);
708 }
709
cs42l43_tip_sense_work(struct work_struct * work)710 void cs42l43_tip_sense_work(struct work_struct *work)
711 {
712 struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
713 tip_sense_work.work);
714 struct cs42l43 *cs42l43 = priv->core;
715 unsigned int sts = 0;
716 unsigned int tip, ring;
717 int ret, report;
718
719 ret = pm_runtime_resume_and_get(priv->dev);
720 if (ret) {
721 dev_err(priv->dev, "Failed to resume for tip work: %d\n", ret);
722 return;
723 }
724
725 mutex_lock(&priv->jack_lock);
726
727 regmap_read(cs42l43->regmap, CS42L43_TIP_RING_SENSE_INTERRUPT_STATUS, &sts);
728
729 dev_dbg(priv->dev, "Tip sense: 0x%x\n", sts);
730
731 tip = (sts >> CS42L43_TIPSENSE_PLUG_DB_STS_SHIFT) & CS42L43_JACK_PRESENT;
732 ring = (sts >> CS42L43_RINGSENSE_PLUG_DB_STS_SHIFT) & CS42L43_JACK_PRESENT;
733
734 if (tip == CS42L43_JACK_PRESENT) {
735 if (cs42l43->sdw && !priv->jack_present) {
736 priv->jack_present = true;
737 pm_runtime_get(priv->dev);
738 }
739
740 if (priv->use_ring_sense && ring == CS42L43_JACK_ABSENT) {
741 report = CS42L43_JACK_OPTICAL;
742 } else {
743 report = cs42l43_run_type_detect(priv);
744 if (report < 0) {
745 dev_err(priv->dev, "Jack detect failed: %d\n", report);
746 goto error;
747 }
748 }
749
750 snd_soc_jack_report(priv->jack_hp, report, report);
751 } else {
752 priv->jack_override = 0;
753
754 cs42l43_clear_jack(priv);
755
756 if (cs42l43->sdw && priv->jack_present) {
757 pm_runtime_put(priv->dev);
758 priv->jack_present = false;
759 }
760 }
761
762 error:
763 mutex_unlock(&priv->jack_lock);
764
765 priv->suspend_jack_debounce = false;
766
767 pm_runtime_put_autosuspend(priv->dev);
768 }
769
cs42l43_tip_sense(int irq,void * data)770 irqreturn_t cs42l43_tip_sense(int irq, void *data)
771 {
772 struct cs42l43_codec *priv = data;
773 unsigned int db_delay = priv->tip_debounce_ms;
774
775 cancel_delayed_work(&priv->bias_sense_timeout);
776 cancel_delayed_work(&priv->tip_sense_work);
777
778 // Ensure delay after suspend is long enough to avoid false detection
779 if (priv->suspend_jack_debounce)
780 db_delay += priv->tip_fall_db_ms + priv->tip_rise_db_ms;
781
782 queue_delayed_work(system_long_wq, &priv->tip_sense_work,
783 msecs_to_jiffies(db_delay));
784
785 return IRQ_HANDLED;
786 }
787
788 enum cs42l43_raw_jack {
789 CS42L43_JACK_RAW_CTIA = 0,
790 CS42L43_JACK_RAW_OMTP,
791 CS42L43_JACK_RAW_HEADPHONE,
792 CS42L43_JACK_RAW_LINE_OUT,
793 CS42L43_JACK_RAW_LINE_IN,
794 CS42L43_JACK_RAW_MICROPHONE,
795 CS42L43_JACK_RAW_OPTICAL,
796 };
797
798 #define CS42L43_JACK_3_POLE_SWITCHES ((0x2 << CS42L43_HSDET_MANUAL_MODE_SHIFT) | \
799 CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK | \
800 CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK | \
801 CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK | \
802 CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK | \
803 CS42L43_HSGND_HS3_SEL_MASK | \
804 CS42L43_HSGND_HS4_SEL_MASK)
805
806 static const struct cs42l43_jack_override_mode {
807 unsigned int hsdet_mode;
808 unsigned int mic_ctrl;
809 unsigned int clamp_ctrl;
810 int report;
811 } cs42l43_jack_override_modes[] = {
812 [CS42L43_JACK_RAW_CTIA] = {
813 .hsdet_mode = CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK |
814 CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK |
815 CS42L43_HSBIAS_OUT_HS4_SEL_MASK |
816 CS42L43_HSGND_HS3_SEL_MASK,
817 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
818 .report = CS42L43_JACK_HEADSET,
819 },
820 [CS42L43_JACK_RAW_OMTP] = {
821 .hsdet_mode = (0x1 << CS42L43_HSDET_MANUAL_MODE_SHIFT) |
822 CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK |
823 CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK |
824 CS42L43_HSBIAS_OUT_HS3_SEL_MASK |
825 CS42L43_HSGND_HS4_SEL_MASK,
826 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
827 .report = CS42L43_JACK_HEADSET,
828 },
829 [CS42L43_JACK_RAW_HEADPHONE] = {
830 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
831 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
832 .report = CS42L43_JACK_HEADPHONE,
833 },
834 [CS42L43_JACK_RAW_LINE_OUT] = {
835 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
836 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
837 .report = CS42L43_JACK_LINEOUT,
838 },
839 [CS42L43_JACK_RAW_LINE_IN] = {
840 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
841 .mic_ctrl = 0x2 << CS42L43_JACK_STEREO_CONFIG_SHIFT,
842 .report = CS42L43_JACK_LINEIN,
843 },
844 [CS42L43_JACK_RAW_MICROPHONE] = {
845 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
846 .mic_ctrl = (0x3 << CS42L43_JACK_STEREO_CONFIG_SHIFT) |
847 CS42L43_HS1_BIAS_EN_MASK | CS42L43_HS2_BIAS_EN_MASK,
848 .report = CS42L43_JACK_LINEIN,
849 },
850 [CS42L43_JACK_RAW_OPTICAL] = {
851 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
852 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
853 .report = CS42L43_JACK_OPTICAL,
854 },
855 };
856
857 static const char * const cs42l43_jack_text[] = {
858 "None", "CTIA", "OMTP", "Headphone", "Line-Out",
859 "Line-In", "Microphone", "Optical",
860 };
861
862 static_assert(ARRAY_SIZE(cs42l43_jack_override_modes) ==
863 ARRAY_SIZE(cs42l43_jack_text) - 1);
864
865 SOC_ENUM_SINGLE_VIRT_DECL(cs42l43_jack_enum, cs42l43_jack_text);
866
cs42l43_jack_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)867 int cs42l43_jack_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
868 {
869 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
870 struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
871
872 mutex_lock(&priv->jack_lock);
873 ucontrol->value.integer.value[0] = priv->jack_override;
874 mutex_unlock(&priv->jack_lock);
875
876 return 0;
877 }
878
cs42l43_jack_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)879 int cs42l43_jack_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
880 {
881 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
882 struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
883 struct cs42l43 *cs42l43 = priv->core;
884 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
885 unsigned int override = ucontrol->value.integer.value[0];
886
887 if (override >= e->items)
888 return -EINVAL;
889
890 mutex_lock(&priv->jack_lock);
891
892 if (!cs42l43_jack_present(priv)) {
893 mutex_unlock(&priv->jack_lock);
894 return -EBUSY;
895 }
896
897 if (override == priv->jack_override) {
898 mutex_unlock(&priv->jack_lock);
899 return 0;
900 }
901
902 priv->jack_override = override;
903
904 cs42l43_clear_jack(priv);
905
906 if (!override) {
907 queue_delayed_work(system_long_wq, &priv->tip_sense_work, 0);
908 } else {
909 override--;
910
911 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
912 CS42L43_HSDET_MODE_MASK |
913 CS42L43_HSDET_MANUAL_MODE_MASK |
914 CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK |
915 CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK |
916 CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK |
917 CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK |
918 CS42L43_HSBIAS_OUT_HS3_SEL_MASK |
919 CS42L43_HSBIAS_OUT_HS4_SEL_MASK |
920 CS42L43_HSGND_HS3_SEL_MASK |
921 CS42L43_HSGND_HS4_SEL_MASK,
922 cs42l43_jack_override_modes[override].hsdet_mode);
923 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CTRL,
924 CS42L43_HS2_BIAS_EN_MASK | CS42L43_HS1_BIAS_EN_MASK |
925 CS42L43_JACK_STEREO_CONFIG_MASK,
926 cs42l43_jack_override_modes[override].mic_ctrl);
927 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL,
928 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
929 cs42l43_jack_override_modes[override].clamp_ctrl);
930
931 switch (override) {
932 case CS42L43_JACK_RAW_CTIA:
933 case CS42L43_JACK_RAW_OMTP:
934 cs42l43_start_hs_bias(priv, false);
935 cs42l43_start_button_detect(priv);
936 break;
937 case CS42L43_JACK_RAW_LINE_IN:
938 regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL1,
939 CS42L43_PGA_WIDESWING_MODE_EN_MASK,
940 CS42L43_PGA_WIDESWING_MODE_EN_MASK);
941 regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL2,
942 CS42L43_PGA_WIDESWING_MODE_EN_MASK,
943 CS42L43_PGA_WIDESWING_MODE_EN_MASK);
944 break;
945 case CS42L43_JACK_RAW_MICROPHONE:
946 cs42l43_start_hs_bias(priv, false);
947 break;
948 default:
949 break;
950 }
951
952 snd_soc_jack_report(priv->jack_hp,
953 cs42l43_jack_override_modes[override].report,
954 cs42l43_jack_override_modes[override].report);
955 }
956
957 mutex_unlock(&priv->jack_lock);
958
959 return 1;
960 }
961