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/delay.h>
10 #include <linux/errno.h>
11 #include <linux/irq.h>
12 #include <linux/jiffies.h>
13 #include <linux/mfd/cs42l43.h>
14 #include <linux/mfd/cs42l43-regs.h>
15 #include <linux/pm_runtime.h>
16 #include <linux/property.h>
17 #include <sound/control.h>
18 #include <sound/jack.h>
19 #include <sound/pcm.h>
20 #include <sound/pcm_params.h>
21 #include <sound/soc-component.h>
22 #include <sound/soc.h>
23
24 #include "cs42l43.h"
25
26 static const unsigned int cs42l43_accdet_us[] = {
27 20, 100, 1000, 10000, 50000, 75000, 100000, 200000
28 };
29
30 static const unsigned int cs42l43_accdet_db_ms[] = {
31 0, 125, 250, 500, 750, 1000, 1250, 1500
32 };
33
34 static const unsigned int cs42l43_accdet_ramp_ms[] = { 10, 40, 90, 170 };
35
36 static const unsigned int cs42l43_accdet_bias_sense[] = {
37 14, 24, 43, 52, 61, 71, 90, 99, 0,
38 };
39
cs42l43_find_index(struct cs42l43_codec * priv,const char * const prop,unsigned int defval,unsigned int * val,const unsigned int * values,const int nvalues)40 static int cs42l43_find_index(struct cs42l43_codec *priv, const char * const prop,
41 unsigned int defval, unsigned int *val,
42 const unsigned int *values, const int nvalues)
43 {
44 struct cs42l43 *cs42l43 = priv->core;
45 int i, ret;
46
47 ret = device_property_read_u32(cs42l43->dev, prop, &defval);
48 if (ret != -EINVAL && ret < 0) {
49 dev_err(priv->dev, "Property %s malformed: %d\n", prop, ret);
50 return ret;
51 }
52
53 if (val)
54 *val = defval;
55
56 for (i = 0; i < nvalues; i++)
57 if (defval == values[i])
58 return i;
59
60 dev_err(priv->dev, "Invalid value for property %s: %d\n", prop, defval);
61 return -EINVAL;
62 }
63
cs42l43_set_jack(struct snd_soc_component * component,struct snd_soc_jack * jack,void * d)64 int cs42l43_set_jack(struct snd_soc_component *component,
65 struct snd_soc_jack *jack, void *d)
66 {
67 struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
68 struct cs42l43 *cs42l43 = priv->core;
69 /* This tip sense invert is always set, HW wants an inverted signal */
70 unsigned int tip_deb = CS42L43_TIPSENSE_INV_MASK;
71 unsigned int hs2 = 0x2 << CS42L43_HSDET_MODE_SHIFT;
72 unsigned int autocontrol = 0, pdncntl = 0;
73 int ret;
74
75 dev_dbg(priv->dev, "Configure accessory detect\n");
76
77 ret = pm_runtime_resume_and_get(priv->dev);
78 if (ret) {
79 dev_err(priv->dev, "Failed to resume for jack config: %d\n", ret);
80 return ret;
81 }
82
83 mutex_lock(&priv->jack_lock);
84
85 priv->jack_hp = jack;
86
87 if (!jack)
88 goto done;
89
90 ret = device_property_count_u32(cs42l43->dev, "cirrus,buttons-ohms");
91 if (ret != -EINVAL) {
92 if (ret < 0) {
93 dev_err(priv->dev, "Property cirrus,buttons-ohms malformed: %d\n",
94 ret);
95 goto error;
96 }
97
98 if (ret > CS42L43_N_BUTTONS) {
99 ret = -EINVAL;
100 dev_err(priv->dev, "Property cirrus,buttons-ohms too many entries\n");
101 goto error;
102 }
103
104 device_property_read_u32_array(cs42l43->dev, "cirrus,buttons-ohms",
105 priv->buttons, ret);
106 } else {
107 priv->buttons[0] = 70;
108 priv->buttons[1] = 185;
109 priv->buttons[2] = 355;
110 priv->buttons[3] = 735;
111 }
112
113 ret = cs42l43_find_index(priv, "cirrus,detect-us", 10000, &priv->detect_us,
114 cs42l43_accdet_us, ARRAY_SIZE(cs42l43_accdet_us));
115 if (ret < 0)
116 goto error;
117
118 hs2 |= ret << CS42L43_AUTO_HSDET_TIME_SHIFT;
119
120 priv->bias_low = device_property_read_bool(cs42l43->dev, "cirrus,bias-low");
121
122 ret = cs42l43_find_index(priv, "cirrus,bias-ramp-ms", 170,
123 &priv->bias_ramp_ms, cs42l43_accdet_ramp_ms,
124 ARRAY_SIZE(cs42l43_accdet_ramp_ms));
125 if (ret < 0)
126 goto error;
127
128 hs2 |= ret << CS42L43_HSBIAS_RAMP_SHIFT;
129
130 ret = cs42l43_find_index(priv, "cirrus,bias-sense-microamp", 0,
131 &priv->bias_sense_ua, cs42l43_accdet_bias_sense,
132 ARRAY_SIZE(cs42l43_accdet_bias_sense));
133 if (ret < 0)
134 goto error;
135
136 if (priv->bias_sense_ua)
137 autocontrol |= ret << CS42L43_HSBIAS_SENSE_TRIP_SHIFT;
138
139 if (!device_property_read_bool(cs42l43->dev, "cirrus,button-automute"))
140 autocontrol |= CS42L43_S0_AUTO_ADCMUTE_DISABLE_MASK;
141
142 ret = device_property_read_u32(cs42l43->dev, "cirrus,tip-debounce-ms",
143 &priv->tip_debounce_ms);
144 if (ret < 0 && ret != -EINVAL) {
145 dev_err(priv->dev, "Property cirrus,tip-debounce-ms malformed: %d\n", ret);
146 goto error;
147 }
148
149 /* This tip sense invert is set normally, as TIPSENSE_INV already inverted */
150 if (device_property_read_bool(cs42l43->dev, "cirrus,tip-invert"))
151 autocontrol |= 0x1 << CS42L43_JACKDET_INV_SHIFT;
152
153 if (device_property_read_bool(cs42l43->dev, "cirrus,tip-disable-pullup"))
154 autocontrol |= 0x1 << CS42L43_JACKDET_MODE_SHIFT;
155 else
156 autocontrol |= 0x3 << CS42L43_JACKDET_MODE_SHIFT;
157
158 ret = cs42l43_find_index(priv, "cirrus,tip-fall-db-ms", 500,
159 NULL, cs42l43_accdet_db_ms,
160 ARRAY_SIZE(cs42l43_accdet_db_ms));
161 if (ret < 0)
162 goto error;
163
164 tip_deb |= ret << CS42L43_TIPSENSE_FALLING_DB_TIME_SHIFT;
165
166 ret = cs42l43_find_index(priv, "cirrus,tip-rise-db-ms", 500,
167 NULL, cs42l43_accdet_db_ms,
168 ARRAY_SIZE(cs42l43_accdet_db_ms));
169 if (ret < 0)
170 goto error;
171
172 tip_deb |= ret << CS42L43_TIPSENSE_RISING_DB_TIME_SHIFT;
173
174 if (device_property_read_bool(cs42l43->dev, "cirrus,use-ring-sense")) {
175 unsigned int ring_deb = 0;
176
177 priv->use_ring_sense = true;
178
179 /* HW wants an inverted signal, so invert the invert */
180 if (!device_property_read_bool(cs42l43->dev, "cirrus,ring-invert"))
181 ring_deb |= CS42L43_RINGSENSE_INV_MASK;
182
183 if (!device_property_read_bool(cs42l43->dev,
184 "cirrus,ring-disable-pullup"))
185 ring_deb |= CS42L43_RINGSENSE_PULLUP_PDNB_MASK;
186
187 ret = cs42l43_find_index(priv, "cirrus,ring-fall-db-ms", 500,
188 NULL, cs42l43_accdet_db_ms,
189 ARRAY_SIZE(cs42l43_accdet_db_ms));
190 if (ret < 0)
191 goto error;
192
193 ring_deb |= ret << CS42L43_RINGSENSE_FALLING_DB_TIME_SHIFT;
194
195 ret = cs42l43_find_index(priv, "cirrus,ring-rise-db-ms", 500,
196 NULL, cs42l43_accdet_db_ms,
197 ARRAY_SIZE(cs42l43_accdet_db_ms));
198 if (ret < 0)
199 goto error;
200
201 ring_deb |= ret << CS42L43_RINGSENSE_RISING_DB_TIME_SHIFT;
202 pdncntl |= CS42L43_RING_SENSE_EN_MASK;
203
204 regmap_update_bits(cs42l43->regmap, CS42L43_RINGSENSE_DEB_CTRL,
205 CS42L43_RINGSENSE_INV_MASK |
206 CS42L43_RINGSENSE_PULLUP_PDNB_MASK |
207 CS42L43_RINGSENSE_FALLING_DB_TIME_MASK |
208 CS42L43_RINGSENSE_RISING_DB_TIME_MASK,
209 ring_deb);
210 }
211
212 regmap_update_bits(cs42l43->regmap, CS42L43_TIPSENSE_DEB_CTRL,
213 CS42L43_TIPSENSE_INV_MASK |
214 CS42L43_TIPSENSE_FALLING_DB_TIME_MASK |
215 CS42L43_TIPSENSE_RISING_DB_TIME_MASK, tip_deb);
216 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
217 CS42L43_HSBIAS_RAMP_MASK | CS42L43_HSDET_MODE_MASK |
218 CS42L43_AUTO_HSDET_TIME_MASK, hs2);
219
220 done:
221 ret = 0;
222
223 regmap_update_bits(cs42l43->regmap, CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
224 CS42L43_JACKDET_MODE_MASK | CS42L43_S0_AUTO_ADCMUTE_DISABLE_MASK |
225 CS42L43_HSBIAS_SENSE_TRIP_MASK, autocontrol);
226 regmap_update_bits(cs42l43->regmap, CS42L43_PDNCNTL,
227 CS42L43_RING_SENSE_EN_MASK, pdncntl);
228
229 dev_dbg(priv->dev, "Successfully configured accessory detect\n");
230
231 error:
232 mutex_unlock(&priv->jack_lock);
233
234 pm_runtime_mark_last_busy(priv->dev);
235 pm_runtime_put_autosuspend(priv->dev);
236
237 return ret;
238 }
239
cs42l43_start_hs_bias(struct cs42l43_codec * priv,bool force_high)240 static void cs42l43_start_hs_bias(struct cs42l43_codec *priv, bool force_high)
241 {
242 struct cs42l43 *cs42l43 = priv->core;
243 unsigned int val = 0x3 << CS42L43_HSBIAS_MODE_SHIFT;
244
245 dev_dbg(priv->dev, "Start headset bias\n");
246
247 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
248 CS42L43_HS_CLAMP_DISABLE_MASK, CS42L43_HS_CLAMP_DISABLE_MASK);
249
250 if (!force_high && priv->bias_low)
251 val = 0x2 << CS42L43_HSBIAS_MODE_SHIFT;
252
253 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
254 CS42L43_HSBIAS_MODE_MASK, val);
255
256 msleep(priv->bias_ramp_ms);
257 }
258
cs42l43_stop_hs_bias(struct cs42l43_codec * priv)259 static void cs42l43_stop_hs_bias(struct cs42l43_codec *priv)
260 {
261 struct cs42l43 *cs42l43 = priv->core;
262
263 dev_dbg(priv->dev, "Stop headset bias\n");
264
265 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
266 CS42L43_HSBIAS_MODE_MASK, 0x1 << CS42L43_HSBIAS_MODE_SHIFT);
267
268 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
269 CS42L43_HS_CLAMP_DISABLE_MASK, 0);
270 }
271
cs42l43_bias_detect_clamp(int irq,void * data)272 irqreturn_t cs42l43_bias_detect_clamp(int irq, void *data)
273 {
274 struct cs42l43_codec *priv = data;
275
276 queue_delayed_work(system_wq, &priv->bias_sense_timeout,
277 msecs_to_jiffies(250));
278
279 return IRQ_HANDLED;
280 }
281
282 #define CS42L43_JACK_PRESENT 0x3
283 #define CS42L43_JACK_ABSENT 0x0
284
285 #define CS42L43_JACK_OPTICAL (SND_JACK_MECHANICAL | SND_JACK_AVOUT)
286 #define CS42L43_JACK_HEADPHONE (SND_JACK_MECHANICAL | SND_JACK_HEADPHONE)
287 #define CS42L43_JACK_HEADSET (SND_JACK_MECHANICAL | SND_JACK_HEADSET)
288 #define CS42L43_JACK_LINEOUT (SND_JACK_MECHANICAL | SND_JACK_LINEOUT)
289 #define CS42L43_JACK_LINEIN (SND_JACK_MECHANICAL | SND_JACK_LINEIN)
290 #define CS42L43_JACK_EXTENSION (SND_JACK_MECHANICAL)
291 #define CS42L43_JACK_BUTTONS (SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2 | \
292 SND_JACK_BTN_3 | SND_JACK_BTN_4 | SND_JACK_BTN_5)
293
cs42l43_jack_present(struct cs42l43_codec * priv)294 static inline bool cs42l43_jack_present(struct cs42l43_codec *priv)
295 {
296 struct cs42l43 *cs42l43 = priv->core;
297 unsigned int sts = 0;
298
299 regmap_read(cs42l43->regmap, CS42L43_TIP_RING_SENSE_INTERRUPT_STATUS, &sts);
300
301 sts = (sts >> CS42L43_TIPSENSE_PLUG_DB_STS_SHIFT) & CS42L43_JACK_PRESENT;
302
303 return sts == CS42L43_JACK_PRESENT;
304 }
305
cs42l43_start_button_detect(struct cs42l43_codec * priv)306 static void cs42l43_start_button_detect(struct cs42l43_codec *priv)
307 {
308 struct cs42l43 *cs42l43 = priv->core;
309 unsigned int val = 0x3 << CS42L43_BUTTON_DETECT_MODE_SHIFT;
310
311 dev_dbg(priv->dev, "Start button detect\n");
312
313 priv->button_detect_running = true;
314
315 if (priv->bias_low)
316 val = 0x1 << CS42L43_BUTTON_DETECT_MODE_SHIFT;
317
318 regmap_update_bits(cs42l43->regmap, CS42L43_MIC_DETECT_CONTROL_1,
319 CS42L43_BUTTON_DETECT_MODE_MASK |
320 CS42L43_MIC_LVL_DET_DISABLE_MASK, val);
321
322 if (priv->bias_sense_ua) {
323 regmap_update_bits(cs42l43->regmap,
324 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
325 CS42L43_HSBIAS_SENSE_EN_MASK |
326 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK,
327 CS42L43_HSBIAS_SENSE_EN_MASK |
328 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK);
329 }
330 }
331
cs42l43_stop_button_detect(struct cs42l43_codec * priv)332 static void cs42l43_stop_button_detect(struct cs42l43_codec *priv)
333 {
334 struct cs42l43 *cs42l43 = priv->core;
335
336 dev_dbg(priv->dev, "Stop button detect\n");
337
338 if (priv->bias_sense_ua) {
339 regmap_update_bits(cs42l43->regmap,
340 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
341 CS42L43_HSBIAS_SENSE_EN_MASK |
342 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK, 0);
343 }
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,
348 CS42L43_MIC_LVL_DET_DISABLE_MASK);
349
350 priv->button_detect_running = false;
351 }
352
353 #define CS42L43_BUTTON_COMB_MAX 512
354 #define CS42L43_BUTTON_ROUT 2210
355
cs42l43_button_press_work(struct work_struct * work)356 void cs42l43_button_press_work(struct work_struct *work)
357 {
358 struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
359 button_press_work.work);
360 struct cs42l43 *cs42l43 = priv->core;
361 unsigned int buttons = 0;
362 unsigned int val = 0;
363 int i, ret;
364
365 ret = pm_runtime_resume_and_get(priv->dev);
366 if (ret) {
367 dev_err(priv->dev, "Failed to resume for button press: %d\n", ret);
368 return;
369 }
370
371 mutex_lock(&priv->jack_lock);
372
373 if (!priv->button_detect_running) {
374 dev_dbg(priv->dev, "Spurious button press IRQ\n");
375 goto error;
376 }
377
378 regmap_read(cs42l43->regmap, CS42L43_DETECT_STATUS_1, &val);
379
380 /* Bail if jack removed, the button is irrelevant and likely invalid */
381 if (!cs42l43_jack_present(priv)) {
382 dev_dbg(priv->dev, "Button ignored due to removal\n");
383 goto error;
384 }
385
386 if (val & CS42L43_HSBIAS_CLAMP_STS_MASK) {
387 dev_dbg(priv->dev, "Button ignored due to bias sense\n");
388 goto error;
389 }
390
391 val = (val & CS42L43_HSDET_DC_STS_MASK) >> CS42L43_HSDET_DC_STS_SHIFT;
392 val = ((CS42L43_BUTTON_COMB_MAX << 20) / (val + 1)) - (1 << 20);
393 if (val)
394 val = (CS42L43_BUTTON_ROUT << 20) / val;
395 else
396 val = UINT_MAX;
397
398 for (i = 0; i < CS42L43_N_BUTTONS; i++) {
399 if (val < priv->buttons[i]) {
400 buttons = SND_JACK_BTN_0 >> i;
401 dev_dbg(priv->dev, "Detected button %d at %d Ohms\n", i, val);
402 break;
403 }
404 }
405
406 if (!buttons)
407 dev_dbg(priv->dev, "Unrecognised button: %d Ohms\n", val);
408
409 snd_soc_jack_report(priv->jack_hp, buttons, CS42L43_JACK_BUTTONS);
410
411 error:
412 mutex_unlock(&priv->jack_lock);
413
414 pm_runtime_mark_last_busy(priv->dev);
415 pm_runtime_put_autosuspend(priv->dev);
416 }
417
cs42l43_button_press(int irq,void * data)418 irqreturn_t cs42l43_button_press(int irq, void *data)
419 {
420 struct cs42l43_codec *priv = data;
421
422 // Wait for 2 full cycles of comb filter to ensure good reading
423 queue_delayed_work(system_wq, &priv->button_press_work,
424 msecs_to_jiffies(10));
425
426 return IRQ_HANDLED;
427 }
428
cs42l43_button_release_work(struct work_struct * work)429 void cs42l43_button_release_work(struct work_struct *work)
430 {
431 struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
432 button_release_work);
433 int ret;
434
435 ret = pm_runtime_resume_and_get(priv->dev);
436 if (ret) {
437 dev_err(priv->dev, "Failed to resume for button release: %d\n", ret);
438 return;
439 }
440
441 mutex_lock(&priv->jack_lock);
442
443 if (priv->button_detect_running) {
444 dev_dbg(priv->dev, "Button release IRQ\n");
445
446 snd_soc_jack_report(priv->jack_hp, 0, CS42L43_JACK_BUTTONS);
447 } else {
448 dev_dbg(priv->dev, "Spurious button release IRQ\n");
449 }
450
451 mutex_unlock(&priv->jack_lock);
452
453 pm_runtime_mark_last_busy(priv->dev);
454 pm_runtime_put_autosuspend(priv->dev);
455 }
456
cs42l43_button_release(int irq,void * data)457 irqreturn_t cs42l43_button_release(int irq, void *data)
458 {
459 struct cs42l43_codec *priv = data;
460
461 queue_work(system_wq, &priv->button_release_work);
462
463 return IRQ_HANDLED;
464 }
465
cs42l43_bias_sense_timeout(struct work_struct * work)466 void cs42l43_bias_sense_timeout(struct work_struct *work)
467 {
468 struct cs42l43_codec *priv = container_of(work, struct cs42l43_codec,
469 bias_sense_timeout.work);
470 struct cs42l43 *cs42l43 = priv->core;
471 int ret;
472
473 ret = pm_runtime_resume_and_get(priv->dev);
474 if (ret) {
475 dev_err(priv->dev, "Failed to resume for bias sense: %d\n", ret);
476 return;
477 }
478
479 mutex_lock(&priv->jack_lock);
480
481 if (cs42l43_jack_present(priv) && priv->button_detect_running) {
482 dev_dbg(priv->dev, "Bias sense timeout out, restore bias\n");
483
484 regmap_update_bits(cs42l43->regmap,
485 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
486 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK, 0);
487 regmap_update_bits(cs42l43->regmap,
488 CS42L43_HS_BIAS_SENSE_AND_CLAMP_AUTOCONTROL,
489 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK,
490 CS42L43_AUTO_HSBIAS_CLAMP_EN_MASK);
491 }
492
493 mutex_unlock(&priv->jack_lock);
494
495 pm_runtime_mark_last_busy(priv->dev);
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) {
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) {
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) / 1000) + 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 pm_runtime_mark_last_busy(priv->dev);
766 pm_runtime_put_autosuspend(priv->dev);
767 }
768
cs42l43_tip_sense(int irq,void * data)769 irqreturn_t cs42l43_tip_sense(int irq, void *data)
770 {
771 struct cs42l43_codec *priv = data;
772
773 cancel_delayed_work(&priv->bias_sense_timeout);
774 cancel_delayed_work(&priv->tip_sense_work);
775 cancel_delayed_work(&priv->button_press_work);
776 cancel_work(&priv->button_release_work);
777
778 queue_delayed_work(system_long_wq, &priv->tip_sense_work,
779 msecs_to_jiffies(priv->tip_debounce_ms));
780
781 return IRQ_HANDLED;
782 }
783
784 enum cs42l43_raw_jack {
785 CS42L43_JACK_RAW_CTIA = 0,
786 CS42L43_JACK_RAW_OMTP,
787 CS42L43_JACK_RAW_HEADPHONE,
788 CS42L43_JACK_RAW_LINE_OUT,
789 CS42L43_JACK_RAW_LINE_IN,
790 CS42L43_JACK_RAW_MICROPHONE,
791 CS42L43_JACK_RAW_OPTICAL,
792 };
793
794 #define CS42L43_JACK_3_POLE_SWITCHES ((0x2 << CS42L43_HSDET_MANUAL_MODE_SHIFT) | \
795 CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK | \
796 CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK | \
797 CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK | \
798 CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK | \
799 CS42L43_HSGND_HS3_SEL_MASK | \
800 CS42L43_HSGND_HS4_SEL_MASK)
801
802 static const struct cs42l43_jack_override_mode {
803 unsigned int hsdet_mode;
804 unsigned int mic_ctrl;
805 unsigned int clamp_ctrl;
806 int report;
807 } cs42l43_jack_override_modes[] = {
808 [CS42L43_JACK_RAW_CTIA] = {
809 .hsdet_mode = CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK |
810 CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK |
811 CS42L43_HSBIAS_OUT_HS4_SEL_MASK |
812 CS42L43_HSGND_HS3_SEL_MASK,
813 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
814 .report = CS42L43_JACK_HEADSET,
815 },
816 [CS42L43_JACK_RAW_OMTP] = {
817 .hsdet_mode = (0x1 << CS42L43_HSDET_MANUAL_MODE_SHIFT) |
818 CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK |
819 CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK |
820 CS42L43_HSBIAS_OUT_HS3_SEL_MASK |
821 CS42L43_HSGND_HS4_SEL_MASK,
822 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
823 .report = CS42L43_JACK_HEADSET,
824 },
825 [CS42L43_JACK_RAW_HEADPHONE] = {
826 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
827 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
828 .report = CS42L43_JACK_HEADPHONE,
829 },
830 [CS42L43_JACK_RAW_LINE_OUT] = {
831 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
832 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
833 .report = CS42L43_JACK_LINEOUT,
834 },
835 [CS42L43_JACK_RAW_LINE_IN] = {
836 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
837 .mic_ctrl = 0x2 << CS42L43_JACK_STEREO_CONFIG_SHIFT,
838 .report = CS42L43_JACK_LINEIN,
839 },
840 [CS42L43_JACK_RAW_MICROPHONE] = {
841 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
842 .mic_ctrl = (0x3 << CS42L43_JACK_STEREO_CONFIG_SHIFT) |
843 CS42L43_HS1_BIAS_EN_MASK | CS42L43_HS2_BIAS_EN_MASK,
844 .report = CS42L43_JACK_LINEIN,
845 },
846 [CS42L43_JACK_RAW_OPTICAL] = {
847 .hsdet_mode = CS42L43_JACK_3_POLE_SWITCHES,
848 .clamp_ctrl = CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
849 .report = CS42L43_JACK_OPTICAL,
850 },
851 };
852
853 static const char * const cs42l43_jack_text[] = {
854 "None", "CTIA", "OMTP", "Headphone", "Line-Out",
855 "Line-In", "Microphone", "Optical",
856 };
857
858 SOC_ENUM_SINGLE_VIRT_DECL(cs42l43_jack_enum, cs42l43_jack_text);
859
cs42l43_jack_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)860 int cs42l43_jack_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
861 {
862 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
863 struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
864
865 mutex_lock(&priv->jack_lock);
866 ucontrol->value.integer.value[0] = priv->jack_override;
867 mutex_unlock(&priv->jack_lock);
868
869 return 0;
870 }
871
cs42l43_jack_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)872 int cs42l43_jack_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
873 {
874 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
875 struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
876 struct cs42l43 *cs42l43 = priv->core;
877 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
878 unsigned int override = ucontrol->value.integer.value[0];
879
880 BUILD_BUG_ON(ARRAY_SIZE(cs42l43_jack_override_modes) !=
881 ARRAY_SIZE(cs42l43_jack_text) - 1);
882
883 if (override >= e->items)
884 return -EINVAL;
885
886 mutex_lock(&priv->jack_lock);
887
888 if (!cs42l43_jack_present(priv)) {
889 mutex_unlock(&priv->jack_lock);
890 return -EBUSY;
891 }
892
893 if (override == priv->jack_override) {
894 mutex_unlock(&priv->jack_lock);
895 return 0;
896 }
897
898 priv->jack_override = override;
899
900 cs42l43_clear_jack(priv);
901
902 if (!override) {
903 queue_delayed_work(system_long_wq, &priv->tip_sense_work, 0);
904 } else {
905 override--;
906
907 regmap_update_bits(cs42l43->regmap, CS42L43_HS2,
908 CS42L43_HSDET_MODE_MASK |
909 CS42L43_HSDET_MANUAL_MODE_MASK |
910 CS42L43_AMP3_4_GNDREF_HS3_SEL_MASK |
911 CS42L43_AMP3_4_GNDREF_HS4_SEL_MASK |
912 CS42L43_HSBIAS_GNDREF_HS3_SEL_MASK |
913 CS42L43_HSBIAS_GNDREF_HS4_SEL_MASK |
914 CS42L43_HSBIAS_OUT_HS3_SEL_MASK |
915 CS42L43_HSBIAS_OUT_HS4_SEL_MASK |
916 CS42L43_HSGND_HS3_SEL_MASK |
917 CS42L43_HSGND_HS4_SEL_MASK,
918 cs42l43_jack_override_modes[override].hsdet_mode);
919 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CTRL,
920 CS42L43_HS2_BIAS_EN_MASK | CS42L43_HS1_BIAS_EN_MASK |
921 CS42L43_JACK_STEREO_CONFIG_MASK,
922 cs42l43_jack_override_modes[override].mic_ctrl);
923 regmap_update_bits(cs42l43->regmap, CS42L43_STEREO_MIC_CLAMP_CTRL,
924 CS42L43_SMIC_HPAMP_CLAMP_DIS_FRC_MASK,
925 cs42l43_jack_override_modes[override].clamp_ctrl);
926
927 switch (override) {
928 case CS42L43_JACK_RAW_CTIA:
929 case CS42L43_JACK_RAW_OMTP:
930 cs42l43_start_hs_bias(priv, false);
931 cs42l43_start_button_detect(priv);
932 break;
933 case CS42L43_JACK_RAW_LINE_IN:
934 regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL1,
935 CS42L43_PGA_WIDESWING_MODE_EN_MASK,
936 CS42L43_PGA_WIDESWING_MODE_EN_MASK);
937 regmap_update_bits(cs42l43->regmap, CS42L43_ADC_B_CTRL2,
938 CS42L43_PGA_WIDESWING_MODE_EN_MASK,
939 CS42L43_PGA_WIDESWING_MODE_EN_MASK);
940 break;
941 case CS42L43_JACK_RAW_MICROPHONE:
942 cs42l43_start_hs_bias(priv, false);
943 break;
944 default:
945 break;
946 }
947
948 snd_soc_jack_report(priv->jack_hp,
949 cs42l43_jack_override_modes[override].report,
950 cs42l43_jack_override_modes[override].report);
951 }
952
953 mutex_unlock(&priv->jack_lock);
954
955 return 1;
956 }
957