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_mark_last_busy(priv->dev);
246 pm_runtime_put_autosuspend(priv->dev);
247
248 return ret;
249 }
250
cs42l43_start_hs_bias(struct cs42l43_codec * priv,bool type_detect)251 static void cs42l43_start_hs_bias(struct cs42l43_codec *priv, bool type_detect)
252 {
253 struct cs42l43 *cs42l43 = priv->core;
254 unsigned int val = 0x3 << CS42L43_HSBIAS_MODE_SHIFT;
255
256 dev_dbg(priv->dev, "Start headset bias\n");
257
258 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
259 CS42L43_HS_CLAMP_DISABLE_MASK, CS42L43_HS_CLAMP_DISABLE_MASK);
260
261 if (!type_detect) {
262 if (priv->bias_low)
263 val = 0x2 << CS42L43_HSBIAS_MODE_SHIFT;
264
265 if (priv->bias_sense_ua)
266 regmap_update_bits(cs42l43->regmap,
267 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
268 CS42L43_HSBIAS_SENSE_EN_MASK |
269 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK,
270 CS42L43_HSBIAS_SENSE_EN_MASK |
271 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK);
272 }
273
274 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
275 CS42L43_HSBIAS_MODE_MASK, val);
276
277 msleep(priv->bias_ramp_ms);
278 }
279
cs42l43_stop_hs_bias(struct cs42l43_codec * priv)280 static void cs42l43_stop_hs_bias(struct cs42l43_codec *priv)
281 {
282 struct cs42l43 *cs42l43 = priv->core;
283
284 dev_dbg(priv->dev, "Stop headset bias\n");
285
286 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
287 CS42L43_HSBIAS_MODE_MASK, 0x1 << CS42L43_HSBIAS_MODE_SHIFT);
288
289 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
290 CS42L43_HS_CLAMP_DISABLE_MASK, 0);
291
292 if (priv->bias_sense_ua) {
293 regmap_update_bits(cs42l43->regmap,
294 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
295 CS42L43_HSBIAS_SENSE_EN_MASK |
296 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK, 0);
297 }
298 }
299
cs42l43_bias_detect_clamp(int irq,void * data)300 irqreturn_t cs42l43_bias_detect_clamp(int irq, void *data)
301 {
302 struct cs42l43_codec *priv = data;
303
304 queue_delayed_work(system_wq, &priv->bias_sense_timeout,
305 msecs_to_jiffies(1000));
306
307 return IRQ_HANDLED;
308 }
309
310 #define CS42L43_JACK_PRESENT 0x3
311 #define CS42L43_JACK_ABSENT 0x0
312
313 #define CS42L43_JACK_OPTICAL (SND_JACK_MECHANICAL | SND_JACK_AVOUT)
314 #define CS42L43_JACK_HEADPHONE (SND_JACK_MECHANICAL | SND_JACK_HEADPHONE)
315 #define CS42L43_JACK_HEADSET (SND_JACK_MECHANICAL | SND_JACK_HEADSET)
316 #define CS42L43_JACK_LINEOUT (SND_JACK_MECHANICAL | SND_JACK_LINEOUT)
317 #define CS42L43_JACK_LINEIN (SND_JACK_MECHANICAL | SND_JACK_LINEIN)
318 #define CS42L43_JACK_EXTENSION (SND_JACK_MECHANICAL)
319 #define CS42L43_JACK_BUTTONS (SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2 | \
320 SND_JACK_BTN_3 | SND_JACK_BTN_4 | SND_JACK_BTN_5)
321
cs42l43_jack_present(struct cs42l43_codec * priv)322 static inline bool cs42l43_jack_present(struct cs42l43_codec *priv)
323 {
324 struct cs42l43 *cs42l43 = priv->core;
325 unsigned int sts = 0;
326
327 regmap_read(cs42l43->regmap, CS42L43_TIP_RING_SENSE_INTERRUPT_STATUS, &sts);
328
329 sts = (sts >> CS42L43_TIPSENSE_PLUG_DB_STS_SHIFT) & CS42L43_JACK_PRESENT;
330
331 return sts == CS42L43_JACK_PRESENT;
332 }
333
cs42l43_start_button_detect(struct cs42l43_codec * priv)334 static void cs42l43_start_button_detect(struct cs42l43_codec *priv)
335 {
336 struct cs42l43 *cs42l43 = priv->core;
337 unsigned int val = 0x3 << CS42L43_BUTTON_DETECT_MODE_SHIFT;
338
339 dev_dbg(priv->dev, "Start button detect\n");
340
341 priv->button_detect_running = true;
342
343 if (priv->bias_low)
344 val = 0x1 << CS42L43_BUTTON_DETECT_MODE_SHIFT;
345
346 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
347 CS42L43_BUTTON_DETECT_MODE_MASK |
348 CS42L43_MIC_LVL_DET_DISABLE_MASK, val);
349 }
350
cs42l43_stop_button_detect(struct cs42l43_codec * priv)351 static void cs42l43_stop_button_detect(struct cs42l43_codec *priv)
352 {
353 struct cs42l43 *cs42l43 = priv->core;
354
355 dev_dbg(priv->dev, "Stop button detect\n");
356
357 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
358 CS42L43_BUTTON_DETECT_MODE_MASK |
359 CS42L43_MIC_LVL_DET_DISABLE_MASK,
360 CS42L43_MIC_LVL_DET_DISABLE_MASK);
361
362 priv->button_detect_running = false;
363 }
364
365 #define CS42L43_BUTTON_COMB_MAX 512
366 #define CS42L43_BUTTON_ROUT 2210
367
cs42l43_button_press_work(struct work_struct * work)368 void cs42l43_button_press_work(struct work_struct *work)
369 {
370 struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
371 button_press_work.work);
372 struct cs42l43 *cs42l43 = priv->core;
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;
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 regmap_read(cs42l43->regmap, CS42L43_DETECT_STATUS_1, &val);
391
392 /* Bail if jack removed, the button is irrelevant and likely invalid */
393 if (!cs42l43_jack_present(priv)) {
394 dev_dbg(priv->dev, "Button ignored due to removal\n");
395 goto error;
396 }
397
398 if (val & CS42L43_HSBIAS_CLAMP_STS_MASK) {
399 dev_dbg(priv->dev, "Button ignored due to bias sense\n");
400 goto error;
401 }
402
403 val = (val & CS42L43_HSDET_DC_STS_MASK) >> CS42L43_HSDET_DC_STS_SHIFT;
404 val = ((CS42L43_BUTTON_COMB_MAX << 20) / (val + 1)) - (1 << 20);
405 if (val)
406 val = (CS42L43_BUTTON_ROUT << 20) / val;
407 else
408 val = UINT_MAX;
409
410 for (i = 0; i < CS42L43_N_BUTTONS; i++) {
411 if (val < priv->buttons[i]) {
412 buttons = SND_JACK_BTN_0 >> i;
413 dev_dbg(priv->dev, "Detected button %d at %d Ohms\n", i, val);
414 break;
415 }
416 }
417
418 if (!buttons)
419 dev_dbg(priv->dev, "Unrecognised button: %d Ohms\n", val);
420
421 snd_soc_jack_report(priv->jack_hp, buttons, CS42L43_JACK_BUTTONS);
422
423 error:
424 mutex_unlock(&priv->jack_lock);
425
426 pm_runtime_mark_last_busy(priv->dev);
427 pm_runtime_put_autosuspend(priv->dev);
428 }
429
cs42l43_button_press(int irq,void * data)430 irqreturn_t cs42l43_button_press(int irq, void *data)
431 {
432 struct cs42l43_codec *priv = data;
433
434 // Wait for 2 full cycles of comb filter to ensure good reading
435 queue_delayed_work(system_wq, &priv->button_press_work,
436 msecs_to_jiffies(20));
437
438 return IRQ_HANDLED;
439 }
440
cs42l43_button_release_work(struct work_struct * work)441 void cs42l43_button_release_work(struct work_struct *work)
442 {
443 struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
444 button_release_work);
445 int ret;
446
447 ret = pm_runtime_resume_and_get(priv->dev);
448 if (ret) {
449 dev_err(priv->dev, "Failed to resume for button release: %d\n", ret);
450 return;
451 }
452
453 mutex_lock(&priv->jack_lock);
454
455 if (priv->button_detect_running) {
456 dev_dbg(priv->dev, "Button release IRQ\n");
457
458 snd_soc_jack_report(priv->jack_hp, 0, CS42L43_JACK_BUTTONS);
459 } else {
460 dev_dbg(priv->dev, "Spurious button release IRQ\n");
461 }
462
463 mutex_unlock(&priv->jack_lock);
464
465 pm_runtime_mark_last_busy(priv->dev);
466 pm_runtime_put_autosuspend(priv->dev);
467 }
468
cs42l43_button_release(int irq,void * data)469 irqreturn_t cs42l43_button_release(int irq, void *data)
470 {
471 struct cs42l43_codec *priv = data;
472
473 queue_work(system_wq, &priv->button_release_work);
474
475 return IRQ_HANDLED;
476 }
477
cs42l43_bias_sense_timeout(struct work_struct * work)478 void cs42l43_bias_sense_timeout(struct work_struct *work)
479 {
480 struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
481 bias_sense_timeout.work);
482 struct cs42l43 *cs42l43 = priv->core;
483 int ret;
484
485 ret = pm_runtime_resume_and_get(priv->dev);
486 if (ret) {
487 dev_err(priv->dev, "Failed to resume for bias sense: %d\n", ret);
488 return;
489 }
490
491 mutex_lock(&priv->jack_lock);
492
493 if (cs42l43_jack_present(priv) && priv->button_detect_running) {
494 dev_dbg(priv->dev, "Bias sense timeout out, restore bias\n");
495
496 regmap_update_bits(cs42l43->regmap,
497 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
498 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK, 0);
499 regmap_update_bits(cs42l43->regmap,
500 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
501 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK,
502 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK);
503 }
504
505 mutex_unlock(&priv->jack_lock);
506
507 pm_runtime_mark_last_busy(priv->dev);
508 pm_runtime_put_autosuspend(priv->dev);
509 }
510
cs42l43_start_load_detect(struct cs42l43_codec * priv)511 static void cs42l43_start_load_detect(struct cs42l43_codec *priv)
512 {
513 struct cs42l43 *cs42l43 = priv->core;
514
515 dev_dbg(priv->dev, "Start load detect\n");
516
517 snd_soc_dapm_mutex_lock(snd_soc_component_get_dapm(priv->component));
518
519 priv->load_detect_running = true;
520
521 if (priv->hp_ena && !priv->hp_ilimited) {
522 unsigned long time_left;
523
524 reinit_completion(&priv->hp_shutdown);
525
526 regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN8,
527 CS42L43_HP_EN_MASK, 0);
528
529 time_left = wait_for_completion_timeout(&priv->hp_shutdown,
530 msecs_to_jiffies(CS42L43_HP_TIMEOUT_MS));
531 if (!time_left)
532 dev_err(priv->dev, "Load detect HP power down timed out\n");
533 }
534
535 regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN3,
536 CS42L43_ADC1_EN_MASK | CS42L43_ADC2_EN_MASK, 0);
537 regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG2, CS42L43_HP_HPF_EN_MASK, 0);
538 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
539 CS42L43_HSBIAS_MODE_MASK, 0);
540 regmap_update_bits(cs42l43->regmap, CS42L43_CTRL,
541 CS42L43_ADPTPWR_MODE_MASK, 0x4 << CS42L43_ADPTPWR_MODE_SHIFT);
542 regmap_update_bits(cs42l43->regmap, CS42L43_PGAVOL,
543 CS42L43_HP_DIG_VOL_RAMP_MASK | CS42L43_HP_ANA_VOL_RAMP_MASK, 0x6);
544 regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG1,
545 CS42L43_HP_MSTR_VOL_CTRL_EN_MASK, 0);
546
547 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
548 CS42L43_HS_CLAMP_DISABLE_MASK, CS42L43_HS_CLAMP_DISABLE_MASK);
549
550 regmap_update_bits(cs42l43->regmap, CS42L43_LOADDETENA,
551 CS42L43_HPLOAD_DET_EN_MASK,
552 CS42L43_HPLOAD_DET_EN_MASK);
553
554 snd_soc_dapm_mutex_unlock(snd_soc_component_get_dapm(priv->component));
555 }
556
cs42l43_stop_load_detect(struct cs42l43_codec * priv)557 static void cs42l43_stop_load_detect(struct cs42l43_codec *priv)
558 {
559 struct cs42l43 *cs42l43 = priv->core;
560
561 dev_dbg(priv->dev, "Stop load detect\n");
562
563 snd_soc_dapm_mutex_lock(snd_soc_component_get_dapm(priv->component));
564
565 regmap_update_bits(cs42l43->regmap, CS42L43_LOADDETENA,
566 CS42L43_HPLOAD_DET_EN_MASK, 0);
567 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
568 CS42L43_HS_CLAMP_DISABLE_MASK, 0);
569 regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG1,
570 CS42L43_HP_MSTR_VOL_CTRL_EN_MASK,
571 CS42L43_HP_MSTR_VOL_CTRL_EN_MASK);
572 regmap_update_bits(cs42l43->regmap, CS42L43_PGAVOL,
573 CS42L43_HP_DIG_VOL_RAMP_MASK | CS42L43_HP_ANA_VOL_RAMP_MASK,
574 0x4 << CS42L43_HP_DIG_VOL_RAMP_SHIFT);
575 regmap_update_bits(cs42l43->regmap, CS42L43_CTRL,
576 CS42L43_ADPTPWR_MODE_MASK, 0x7 << CS42L43_ADPTPWR_MODE_SHIFT);
577 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
578 CS42L43_HSBIAS_MODE_MASK, 0x1 << CS42L43_HSBIAS_MODE_SHIFT);
579 regmap_update_bits(cs42l43->regmap, CS42L43_DACCNFG2,
580 CS42L43_HP_HPF_EN_MASK, CS42L43_HP_HPF_EN_MASK);
581
582 regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN3,
583 CS42L43_ADC1_EN_MASK | CS42L43_ADC2_EN_MASK,
584 priv->adc_ena);
585
586 if (priv->hp_ena && !priv->hp_ilimited) {
587 unsigned long time_left;
588
589 reinit_completion(&priv->hp_startup);
590
591 regmap_update_bits(cs42l43->regmap, CS42L43_BLOCK_EN8,
592 CS42L43_HP_EN_MASK, priv->hp_ena);
593
594 time_left = wait_for_completion_timeout(&priv->hp_startup,
595 msecs_to_jiffies(CS42L43_HP_TIMEOUT_MS));
596 if (!time_left)
597 dev_err(priv->dev, "Load detect HP restore timed out\n");
598 }
599
600 priv->load_detect_running = false;
601
602 snd_soc_dapm_mutex_unlock(snd_soc_component_get_dapm(priv->component));
603 }
604
cs42l43_run_load_detect(struct cs42l43_codec * priv,bool mic)605 static int cs42l43_run_load_detect(struct cs42l43_codec *priv, bool mic)
606 {
607 struct cs42l43 *cs42l43 = priv->core;
608 unsigned int val = 0;
609 unsigned long time_left;
610
611 reinit_completion(&priv->load_detect);
612
613 cs42l43_start_load_detect(priv);
614 time_left = wait_for_completion_timeout(&priv->load_detect,
615 msecs_to_jiffies(CS42L43_LOAD_TIMEOUT_MS));
616 cs42l43_stop_load_detect(priv);
617
618 if (!time_left)
619 return -ETIMEDOUT;
620
621 regmap_read(cs42l43->regmap, CS42L43_LOADDETRESULTS, &val);
622
623 dev_dbg(priv->dev, "Headphone load detect: 0x%x\n", val);
624
625 /* Bail if jack removed, the load is irrelevant and likely invalid */
626 if (!cs42l43_jack_present(priv))
627 return -ENODEV;
628
629 if (mic) {
630 cs42l43_start_hs_bias(priv, false);
631 cs42l43_start_button_detect(priv);
632
633 return CS42L43_JACK_HEADSET;
634 }
635
636 switch (val & CS42L43_AMP3_RES_DET_MASK) {
637 case 0x0: // low impedance
638 case 0x1: // high impedance
639 return CS42L43_JACK_HEADPHONE;
640 case 0x2: // lineout
641 case 0x3: // Open circuit
642 return CS42L43_JACK_LINEOUT;
643 default:
644 return -EINVAL;
645 }
646 }
647
cs42l43_run_type_detect(struct cs42l43_codec * priv)648 static int cs42l43_run_type_detect(struct cs42l43_codec *priv)
649 {
650 struct cs42l43 *cs42l43 = priv->core;
651 int timeout_ms = ((2 * priv->detect_us) / USEC_PER_MSEC) + 200;
652 unsigned int type = 0xff;
653 unsigned long time_left;
654
655 reinit_completion(&priv->type_detect);
656
657 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL,
658 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_VAL_MASK,
659 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_VAL_MASK);
660
661 cs42l43_start_hs_bias(priv, true);
662 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
663 CS42L43_HSDET_MODE_MASK, 0x3 << CS42L43_HSDET_MODE_SHIFT);
664
665 time_left = wait_for_completion_timeout(&priv->type_detect,
666 msecs_to_jiffies(timeout_ms));
667
668 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
669 CS42L43_HSDET_MODE_MASK, 0x2 << CS42L43_HSDET_MODE_SHIFT);
670 cs42l43_stop_hs_bias(priv);
671
672 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL,
673 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_VAL_MASK, 0);
674
675 if (!time_left)
676 return -ETIMEDOUT;
677
678 regmap_read(cs42l43->regmap, CS42L43_HS_STAT, &type);
679
680 dev_dbg(priv->dev, "Type detect: 0x%x\n", type);
681
682 /* Bail if jack removed, the type is irrelevant and likely invalid */
683 if (!cs42l43_jack_present(priv))
684 return -ENODEV;
685
686 switch (type & CS42L43_HSDET_TYPE_STS_MASK) {
687 case 0x0: // CTIA
688 case 0x1: // OMTP
689 return cs42l43_run_load_detect(priv, true);
690 case 0x2: // 3-pole
691 return cs42l43_run_load_detect(priv, false);
692 case 0x3: // Open-circuit
693 return CS42L43_JACK_EXTENSION;
694 default:
695 return -EINVAL;
696 }
697 }
698
cs42l43_clear_jack(struct cs42l43_codec * priv)699 static void cs42l43_clear_jack(struct cs42l43_codec *priv)
700 {
701 struct cs42l43 *cs42l43 = priv->core;
702
703 cs42l43_stop_button_detect(priv);
704 cs42l43_stop_hs_bias(priv);
705
706 regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL1,
707 CS42L43_PGA_WIDESWING_MODE_EN_MASK, 0);
708 regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL2,
709 CS42L43_PGA_WIDESWING_MODE_EN_MASK, 0);
710 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CTRL,
711 CS42L43_JACK_STEREO_CONFIG_MASK, 0);
712 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL,
713 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
714 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK);
715 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
716 CS42L43_HSDET_MODE_MASK | CS42L43_HSDET_MANUAL_MODE_MASK,
717 0x2 << CS42L43_HSDET_MODE_SHIFT);
718
719 snd_soc_jack_report(priv->jack_hp, 0, 0xFFFF);
720 }
721
cs42l43_tip_sense_work(struct work_struct * work)722 void cs42l43_tip_sense_work(struct work_struct *work)
723 {
724 struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
725 tip_sense_work.work);
726 struct cs42l43 *cs42l43 = priv->core;
727 unsigned int sts = 0;
728 unsigned int tip, ring;
729 int ret, report;
730
731 ret = pm_runtime_resume_and_get(priv->dev);
732 if (ret) {
733 dev_err(priv->dev, "Failed to resume for tip work: %d\n", ret);
734 return;
735 }
736
737 mutex_lock(&priv->jack_lock);
738
739 regmap_read(cs42l43->regmap, CS42L43_TIP_RING_SENSE_INTERRUPT_STATUS, &sts);
740
741 dev_dbg(priv->dev, "Tip sense: 0x%x\n", sts);
742
743 tip = (sts >> CS42L43_TIPSENSE_PLUG_DB_STS_SHIFT) & CS42L43_JACK_PRESENT;
744 ring = (sts >> CS42L43_RINGSENSE_PLUG_DB_STS_SHIFT) & CS42L43_JACK_PRESENT;
745
746 if (tip == CS42L43_JACK_PRESENT) {
747 if (cs42l43->sdw && !priv->jack_present) {
748 priv->jack_present = true;
749 pm_runtime_get(priv->dev);
750 }
751
752 if (priv->use_ring_sense && ring == CS42L43_JACK_ABSENT) {
753 report = CS42L43_JACK_OPTICAL;
754 } else {
755 report = cs42l43_run_type_detect(priv);
756 if (report < 0) {
757 dev_err(priv->dev, "Jack detect failed: %d\n", report);
758 goto error;
759 }
760 }
761
762 snd_soc_jack_report(priv->jack_hp, report, report);
763 } else {
764 priv->jack_override = 0;
765
766 cs42l43_clear_jack(priv);
767
768 if (cs42l43->sdw && priv->jack_present) {
769 pm_runtime_put(priv->dev);
770 priv->jack_present = false;
771 }
772 }
773
774 error:
775 mutex_unlock(&priv->jack_lock);
776
777 priv->suspend_jack_debounce = false;
778
779 pm_runtime_mark_last_busy(priv->dev);
780 pm_runtime_put_autosuspend(priv->dev);
781 }
782
cs42l43_tip_sense(int irq,void * data)783 irqreturn_t cs42l43_tip_sense(int irq, void *data)
784 {
785 struct cs42l43_codec *priv = data;
786 unsigned int db_delay = priv->tip_debounce_ms;
787
788 cancel_delayed_work(&priv->bias_sense_timeout);
789 cancel_delayed_work(&priv->tip_sense_work);
790 cancel_delayed_work(&priv->button_press_work);
791 cancel_work(&priv->button_release_work);
792
793 // Ensure delay after suspend is long enough to avoid false detection
794 if (priv->suspend_jack_debounce)
795 db_delay += priv->tip_fall_db_ms + priv->tip_rise_db_ms;
796
797 queue_delayed_work(system_long_wq, &priv->tip_sense_work,
798 msecs_to_jiffies(db_delay));
799
800 return IRQ_HANDLED;
801 }
802
803 enum cs42l43_raw_jack {
804 CS42L43_JACK_RAW_CTIA = 0,
805 CS42L43_JACK_RAW_OMTP,
806 CS42L43_JACK_RAW_HEADPHONE,
807 CS42L43_JACK_RAW_LINE_OUT,
808 CS42L43_JACK_RAW_LINE_IN,
809 CS42L43_JACK_RAW_MICROPHONE,
810 CS42L43_JACK_RAW_OPTICAL,
811 };
812
813 #define CS42L43_JACK_3_POLE_SWITCHES ((0x2 << CS42L43_HSDET_MANUAL_MODE_SHIFT) | \
814 CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK | \
815 CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK | \
816 CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK | \
817 CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK | \
818 CS42L43_HSGND_HS3_SEL_MASK | \
819 CS42L43_HSGND_HS4_SEL_MASK)
820
821 static const struct cs42l43_jack_override_mode {
822 unsigned int hsdet_mode;
823 unsigned int mic_ctrl;
824 unsigned int clamp_ctrl;
825 int report;
826 } cs42l43_jack_override_modes[] = {
827 [CS42L43_JACK_RAW_CTIA] = {
828 .hsdet_mode = CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK |
829 CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK |
830 CS42L43_HSBIAS_OUT_HS4_SEL_MASK |
831 CS42L43_HSGND_HS3_SEL_MASK,
832 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
833 .report = CS42L43_JACK_HEADSET,
834 },
835 [CS42L43_JACK_RAW_OMTP] = {
836 .hsdet_mode = (0x1 << CS42L43_HSDET_MANUAL_MODE_SHIFT) |
837 CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK |
838 CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK |
839 CS42L43_HSBIAS_OUT_HS3_SEL_MASK |
840 CS42L43_HSGND_HS4_SEL_MASK,
841 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
842 .report = CS42L43_JACK_HEADSET,
843 },
844 [CS42L43_JACK_RAW_HEADPHONE] = {
845 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
846 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
847 .report = CS42L43_JACK_HEADPHONE,
848 },
849 [CS42L43_JACK_RAW_LINE_OUT] = {
850 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
851 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
852 .report = CS42L43_JACK_LINEOUT,
853 },
854 [CS42L43_JACK_RAW_LINE_IN] = {
855 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
856 .mic_ctrl = 0x2 << CS42L43_JACK_STEREO_CONFIG_SHIFT,
857 .report = CS42L43_JACK_LINEIN,
858 },
859 [CS42L43_JACK_RAW_MICROPHONE] = {
860 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
861 .mic_ctrl = (0x3 << CS42L43_JACK_STEREO_CONFIG_SHIFT) |
862 CS42L43_HS1_BIAS_EN_MASK | CS42L43_HS2_BIAS_EN_MASK,
863 .report = CS42L43_JACK_LINEIN,
864 },
865 [CS42L43_JACK_RAW_OPTICAL] = {
866 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
867 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
868 .report = CS42L43_JACK_OPTICAL,
869 },
870 };
871
872 static const char * const cs42l43_jack_text[] = {
873 "None", "CTIA", "OMTP", "Headphone", "Line-Out",
874 "Line-In", "Microphone", "Optical",
875 };
876
877 static_assert(ARRAY_SIZE(cs42l43_jack_override_modes) ==
878 ARRAY_SIZE(cs42l43_jack_text) - 1);
879
880 SOC_ENUM_SINGLE_VIRT_DECL(cs42l43_jack_enum, cs42l43_jack_text);
881
cs42l43_jack_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)882 int cs42l43_jack_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
883 {
884 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
885 struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
886
887 mutex_lock(&priv->jack_lock);
888 ucontrol->value.integer.value[0] = priv->jack_override;
889 mutex_unlock(&priv->jack_lock);
890
891 return 0;
892 }
893
cs42l43_jack_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)894 int cs42l43_jack_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
895 {
896 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
897 struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
898 struct cs42l43 *cs42l43 = priv->core;
899 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
900 unsigned int override = ucontrol->value.integer.value[0];
901
902 if (override >= e->items)
903 return -EINVAL;
904
905 mutex_lock(&priv->jack_lock);
906
907 if (!cs42l43_jack_present(priv)) {
908 mutex_unlock(&priv->jack_lock);
909 return -EBUSY;
910 }
911
912 if (override == priv->jack_override) {
913 mutex_unlock(&priv->jack_lock);
914 return 0;
915 }
916
917 priv->jack_override = override;
918
919 cs42l43_clear_jack(priv);
920
921 if (!override) {
922 queue_delayed_work(system_long_wq, &priv->tip_sense_work, 0);
923 } else {
924 override--;
925
926 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
927 CS42L43_HSDET_MODE_MASK |
928 CS42L43_HSDET_MANUAL_MODE_MASK |
929 CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK |
930 CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK |
931 CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK |
932 CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK |
933 CS42L43_HSBIAS_OUT_HS3_SEL_MASK |
934 CS42L43_HSBIAS_OUT_HS4_SEL_MASK |
935 CS42L43_HSGND_HS3_SEL_MASK |
936 CS42L43_HSGND_HS4_SEL_MASK,
937 cs42l43_jack_override_modes[override].hsdet_mode);
938 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CTRL,
939 CS42L43_HS2_BIAS_EN_MASK | CS42L43_HS1_BIAS_EN_MASK |
940 CS42L43_JACK_STEREO_CONFIG_MASK,
941 cs42l43_jack_override_modes[override].mic_ctrl);
942 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL,
943 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
944 cs42l43_jack_override_modes[override].clamp_ctrl);
945
946 switch (override) {
947 case CS42L43_JACK_RAW_CTIA:
948 case CS42L43_JACK_RAW_OMTP:
949 cs42l43_start_hs_bias(priv, false);
950 cs42l43_start_button_detect(priv);
951 break;
952 case CS42L43_JACK_RAW_LINE_IN:
953 regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL1,
954 CS42L43_PGA_WIDESWING_MODE_EN_MASK,
955 CS42L43_PGA_WIDESWING_MODE_EN_MASK);
956 regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL2,
957 CS42L43_PGA_WIDESWING_MODE_EN_MASK,
958 CS42L43_PGA_WIDESWING_MODE_EN_MASK);
959 break;
960 case CS42L43_JACK_RAW_MICROPHONE:
961 cs42l43_start_hs_bias(priv, false);
962 break;
963 default:
964 break;
965 }
966
967 snd_soc_jack_report(priv->jack_hp,
968 cs42l43_jack_override_modes[override].report,
969 cs42l43_jack_override_modes[override].report);
970 }
971
972 mutex_unlock(&priv->jack_lock);
973
974 return 1;
975 }
976