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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * extcon-arizona.c - Extcon driver Wolfson Arizona devices
4 *
5 * Copyright (C) 2012-2014 Wolfson Microelectronics plc
6 */
7
8#include <linux/kernel.h>
9#include <linux/module.h>
10#include <linux/slab.h>
11#include <linux/interrupt.h>
12#include <linux/err.h>
13#include <linux/gpio/consumer.h>
14#include <linux/gpio.h>
15#include <linux/input.h>
16#include <linux/pm_runtime.h>
17#include <linux/property.h>
18#include <linux/regulator/consumer.h>
19
20#include <sound/jack.h>
21#include <sound/soc.h>
22
23#include <linux/mfd/arizona/core.h>
24#include <linux/mfd/arizona/pdata.h>
25#include <linux/mfd/arizona/registers.h>
26#include <dt-bindings/mfd/arizona.h>
27
28#include "arizona.h"
29
30#define ARIZONA_MAX_MICD_RANGE 8
31
32/*
33 * The hardware supports 8 ranges / buttons, but the snd-jack interface
34 * only supports 6 buttons (button 0-5).
35 */
36#define ARIZONA_MAX_MICD_BUTTONS 6
37
38#define ARIZONA_MICD_CLAMP_MODE_JDL 0x4
39#define ARIZONA_MICD_CLAMP_MODE_JDH 0x5
40#define ARIZONA_MICD_CLAMP_MODE_JDL_GP5H 0x9
41#define ARIZONA_MICD_CLAMP_MODE_JDH_GP5H 0xb
42
43#define ARIZONA_TST_CAP_DEFAULT 0x3
44#define ARIZONA_TST_CAP_CLAMP 0x1
45
46#define ARIZONA_HPDET_MAX 10000
47
48#define HPDET_DEBOUNCE 500
49#define DEFAULT_MICD_TIMEOUT 2000
50
51#define ARIZONA_HPDET_WAIT_COUNT 15
52#define ARIZONA_HPDET_WAIT_DELAY_MS 20
53
54#define QUICK_HEADPHONE_MAX_OHM 3
55#define MICROPHONE_MIN_OHM 1257
56#define MICROPHONE_MAX_OHM 30000
57
58#define MICD_DBTIME_TWO_READINGS 2
59#define MICD_DBTIME_FOUR_READINGS 4
60
61#define MICD_LVL_1_TO_7 (ARIZONA_MICD_LVL_1 | ARIZONA_MICD_LVL_2 | \
62 ARIZONA_MICD_LVL_3 | ARIZONA_MICD_LVL_4 | \
63 ARIZONA_MICD_LVL_5 | ARIZONA_MICD_LVL_6 | \
64 ARIZONA_MICD_LVL_7)
65
66#define MICD_LVL_0_TO_7 (ARIZONA_MICD_LVL_0 | MICD_LVL_1_TO_7)
67
68#define MICD_LVL_0_TO_8 (MICD_LVL_0_TO_7 | ARIZONA_MICD_LVL_8)
69
70static const struct arizona_micd_config micd_default_modes[] = {
71 { ARIZONA_ACCDET_SRC, 1, 0 },
72 { 0, 2, 1 },
73};
74
75static const struct arizona_micd_range micd_default_ranges[] = {
76 { .max = 11, .key = BTN_0 },
77 { .max = 28, .key = BTN_1 },
78 { .max = 54, .key = BTN_2 },
79 { .max = 100, .key = BTN_3 },
80 { .max = 186, .key = BTN_4 },
81 { .max = 430, .key = BTN_5 },
82};
83
84/* The number of levels in arizona_micd_levels valid for button thresholds */
85#define ARIZONA_NUM_MICD_BUTTON_LEVELS 64
86
87static const int arizona_micd_levels[] = {
88 3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46,
89 49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100,
90 105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245,
91 270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071,
92 1257, 30000,
93};
94
95static void arizona_start_hpdet_acc_id(struct arizona_priv *info);
96
97static void arizona_extcon_hp_clamp(struct arizona_priv *info,
98 bool clamp)
99{
100 struct arizona *arizona = info->arizona;
101 unsigned int mask = 0, val = 0;
102 unsigned int cap_sel = 0;
103 int ret;
104
105 switch (arizona->type) {
106 case WM8998:
107 case WM1814:
108 mask = 0;
109 break;
110 case WM5110:
111 case WM8280:
112 mask = ARIZONA_HP1L_SHRTO | ARIZONA_HP1L_FLWR |
113 ARIZONA_HP1L_SHRTI;
114 if (clamp) {
115 val = ARIZONA_HP1L_SHRTO;
116 cap_sel = ARIZONA_TST_CAP_CLAMP;
117 } else {
118 val = ARIZONA_HP1L_FLWR | ARIZONA_HP1L_SHRTI;
119 cap_sel = ARIZONA_TST_CAP_DEFAULT;
120 }
121
122 ret = regmap_update_bits(arizona->regmap,
123 ARIZONA_HP_TEST_CTRL_1,
124 ARIZONA_HP1_TST_CAP_SEL_MASK,
125 cap_sel);
126 if (ret)
127 dev_warn(arizona->dev, "Failed to set TST_CAP_SEL: %d\n", ret);
128 break;
129 default:
130 mask = ARIZONA_RMV_SHRT_HP1L;
131 if (clamp)
132 val = ARIZONA_RMV_SHRT_HP1L;
133 break;
134 }
135
136 snd_soc_dapm_mutex_lock(arizona->dapm);
137
138 arizona->hpdet_clamp = clamp;
139
140 /* Keep the HP output stages disabled while doing the clamp */
141 if (clamp) {
142 ret = regmap_update_bits(arizona->regmap,
143 ARIZONA_OUTPUT_ENABLES_1,
144 ARIZONA_OUT1L_ENA |
145 ARIZONA_OUT1R_ENA, 0);
146 if (ret)
147 dev_warn(arizona->dev, "Failed to disable headphone outputs: %d\n", ret);
148 }
149
150 if (mask) {
151 ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1L,
152 mask, val);
153 if (ret)
154 dev_warn(arizona->dev, "Failed to do clamp: %d\n", ret);
155
156 ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1R,
157 mask, val);
158 if (ret)
159 dev_warn(arizona->dev, "Failed to do clamp: %d\n", ret);
160 }
161
162 /* Restore the desired state while not doing the clamp */
163 if (!clamp) {
164 ret = regmap_update_bits(arizona->regmap,
165 ARIZONA_OUTPUT_ENABLES_1,
166 ARIZONA_OUT1L_ENA |
167 ARIZONA_OUT1R_ENA, arizona->hp_ena);
168 if (ret)
169 dev_warn(arizona->dev, "Failed to restore headphone outputs: %d\n", ret);
170 }
171
172 snd_soc_dapm_mutex_unlock(arizona->dapm);
173}
174
175static void arizona_extcon_set_mode(struct arizona_priv *info, int mode)
176{
177 struct arizona *arizona = info->arizona;
178
179 mode %= info->micd_num_modes;
180
181 gpiod_set_value_cansleep(info->micd_pol_gpio,
182 info->micd_modes[mode].gpio);
183
184 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
185 ARIZONA_MICD_BIAS_SRC_MASK,
186 info->micd_modes[mode].bias <<
187 ARIZONA_MICD_BIAS_SRC_SHIFT);
188 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
189 ARIZONA_ACCDET_SRC, info->micd_modes[mode].src);
190
191 info->micd_mode = mode;
192
193 dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode);
194}
195
196static const char *arizona_extcon_get_micbias(struct arizona_priv *info)
197{
198 switch (info->micd_modes[0].bias) {
199 case 1:
200 return "MICBIAS1";
201 case 2:
202 return "MICBIAS2";
203 case 3:
204 return "MICBIAS3";
205 default:
206 return "MICVDD";
207 }
208}
209
210static void arizona_extcon_pulse_micbias(struct arizona_priv *info)
211{
212 struct arizona *arizona = info->arizona;
213 const char *widget = arizona_extcon_get_micbias(info);
214 struct snd_soc_dapm_context *dapm = arizona->dapm;
215 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
216 int ret;
217
218 ret = snd_soc_component_force_enable_pin(component, widget);
219 if (ret)
220 dev_warn(arizona->dev, "Failed to enable %s: %d\n", widget, ret);
221
222 snd_soc_dapm_sync(dapm);
223
224 if (!arizona->pdata.micd_force_micbias) {
225 ret = snd_soc_component_disable_pin(component, widget);
226 if (ret)
227 dev_warn(arizona->dev, "Failed to disable %s: %d\n", widget, ret);
228
229 snd_soc_dapm_sync(dapm);
230 }
231}
232
233static void arizona_start_mic(struct arizona_priv *info)
234{
235 struct arizona *arizona = info->arizona;
236 bool change;
237 int ret;
238 unsigned int mode;
239
240 /* Microphone detection can't use idle mode */
241 pm_runtime_get_sync(arizona->dev);
242
243 if (info->detecting) {
244 ret = regulator_allow_bypass(info->micvdd, false);
245 if (ret)
246 dev_err(arizona->dev, "Failed to regulate MICVDD: %d\n", ret);
247 }
248
249 ret = regulator_enable(info->micvdd);
250 if (ret)
251 dev_err(arizona->dev, "Failed to enable MICVDD: %d\n", ret);
252
253 if (info->micd_reva) {
254 const struct reg_sequence reva[] = {
255 { 0x80, 0x3 },
256 { 0x294, 0x0 },
257 { 0x80, 0x0 },
258 };
259
260 regmap_multi_reg_write(arizona->regmap, reva, ARRAY_SIZE(reva));
261 }
262
263 if (info->detecting && arizona->pdata.micd_software_compare)
264 mode = ARIZONA_ACCDET_MODE_ADC;
265 else
266 mode = ARIZONA_ACCDET_MODE_MIC;
267
268 regmap_update_bits(arizona->regmap,
269 ARIZONA_ACCESSORY_DETECT_MODE_1,
270 ARIZONA_ACCDET_MODE_MASK, mode);
271
272 arizona_extcon_pulse_micbias(info);
273
274 ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
275 ARIZONA_MICD_ENA, ARIZONA_MICD_ENA,
276 &change);
277 if (ret < 0) {
278 dev_err(arizona->dev, "Failed to enable micd: %d\n", ret);
279 } else if (!change) {
280 regulator_disable(info->micvdd);
281 pm_runtime_put_autosuspend(arizona->dev);
282 }
283}
284
285static void arizona_stop_mic(struct arizona_priv *info)
286{
287 struct arizona *arizona = info->arizona;
288 const char *widget = arizona_extcon_get_micbias(info);
289 struct snd_soc_dapm_context *dapm = arizona->dapm;
290 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
291 bool change = false;
292 int ret;
293
294 ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
295 ARIZONA_MICD_ENA, 0,
296 &change);
297 if (ret < 0)
298 dev_err(arizona->dev, "Failed to disable micd: %d\n", ret);
299
300 ret = snd_soc_component_disable_pin(component, widget);
301 if (ret)
302 dev_warn(arizona->dev, "Failed to disable %s: %d\n", widget, ret);
303
304 snd_soc_dapm_sync(dapm);
305
306 if (info->micd_reva) {
307 const struct reg_sequence reva[] = {
308 { 0x80, 0x3 },
309 { 0x294, 0x2 },
310 { 0x80, 0x0 },
311 };
312
313 regmap_multi_reg_write(arizona->regmap, reva, ARRAY_SIZE(reva));
314 }
315
316 ret = regulator_allow_bypass(info->micvdd, true);
317 if (ret)
318 dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n", ret);
319
320 if (change) {
321 regulator_disable(info->micvdd);
322 pm_runtime_mark_last_busy(arizona->dev);
323 pm_runtime_put_autosuspend(arizona->dev);
324 }
325}
326
327static struct {
328 unsigned int threshold;
329 unsigned int factor_a;
330 unsigned int factor_b;
331} arizona_hpdet_b_ranges[] = {
332 { 100, 5528, 362464 },
333 { 169, 11084, 6186851 },
334 { 169, 11065, 65460395 },
335};
336
337#define ARIZONA_HPDET_B_RANGE_MAX 0x3fb
338
339static struct {
340 int min;
341 int max;
342} arizona_hpdet_c_ranges[] = {
343 { 0, 30 },
344 { 8, 100 },
345 { 100, 1000 },
346 { 1000, 10000 },
347};
348
349static int arizona_hpdet_read(struct arizona_priv *info)
350{
351 struct arizona *arizona = info->arizona;
352 unsigned int val, range;
353 int ret;
354
355 ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2, &val);
356 if (ret) {
357 dev_err(arizona->dev, "Failed to read HPDET status: %d\n", ret);
358 return ret;
359 }
360
361 switch (info->hpdet_ip_version) {
362 case 0:
363 if (!(val & ARIZONA_HP_DONE)) {
364 dev_err(arizona->dev, "HPDET did not complete: %x\n", val);
365 return -EAGAIN;
366 }
367
368 val &= ARIZONA_HP_LVL_MASK;
369 break;
370
371 case 1:
372 if (!(val & ARIZONA_HP_DONE_B)) {
373 dev_err(arizona->dev, "HPDET did not complete: %x\n", val);
374 return -EAGAIN;
375 }
376
377 ret = regmap_read(arizona->regmap, ARIZONA_HP_DACVAL, &val);
378 if (ret) {
379 dev_err(arizona->dev, "Failed to read HP value: %d\n", ret);
380 return -EAGAIN;
381 }
382
383 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
384 &range);
385 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
386 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
387
388 if (range < ARRAY_SIZE(arizona_hpdet_b_ranges) - 1 &&
389 (val < arizona_hpdet_b_ranges[range].threshold ||
390 val >= ARIZONA_HPDET_B_RANGE_MAX)) {
391 range++;
392 dev_dbg(arizona->dev, "Moving to HPDET range %d\n", range);
393 regmap_update_bits(arizona->regmap,
394 ARIZONA_HEADPHONE_DETECT_1,
395 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
396 range <<
397 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
398 return -EAGAIN;
399 }
400
401 /* If we go out of range report top of range */
402 if (val < arizona_hpdet_b_ranges[range].threshold ||
403 val >= ARIZONA_HPDET_B_RANGE_MAX) {
404 dev_dbg(arizona->dev, "Measurement out of range\n");
405 return ARIZONA_HPDET_MAX;
406 }
407
408 dev_dbg(arizona->dev, "HPDET read %d in range %d\n", val, range);
409
410 val = arizona_hpdet_b_ranges[range].factor_b
411 / ((val * 100) -
412 arizona_hpdet_b_ranges[range].factor_a);
413 break;
414
415 case 2:
416 if (!(val & ARIZONA_HP_DONE_B)) {
417 dev_err(arizona->dev, "HPDET did not complete: %x\n", val);
418 return -EAGAIN;
419 }
420
421 val &= ARIZONA_HP_LVL_B_MASK;
422 /* Convert to ohms, the value is in 0.5 ohm increments */
423 val /= 2;
424
425 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
426 &range);
427 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
428 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
429
430 /* Skip up a range, or report? */
431 if (range < ARRAY_SIZE(arizona_hpdet_c_ranges) - 1 &&
432 (val >= arizona_hpdet_c_ranges[range].max)) {
433 range++;
434 dev_dbg(arizona->dev, "Moving to HPDET range %d-%d\n",
435 arizona_hpdet_c_ranges[range].min,
436 arizona_hpdet_c_ranges[range].max);
437 regmap_update_bits(arizona->regmap,
438 ARIZONA_HEADPHONE_DETECT_1,
439 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
440 range <<
441 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
442 return -EAGAIN;
443 }
444
445 if (range && (val < arizona_hpdet_c_ranges[range].min)) {
446 dev_dbg(arizona->dev, "Reporting range boundary %d\n",
447 arizona_hpdet_c_ranges[range].min);
448 val = arizona_hpdet_c_ranges[range].min;
449 }
450 break;
451
452 default:
453 dev_warn(arizona->dev, "Unknown HPDET IP revision %d\n", info->hpdet_ip_version);
454 return -EINVAL;
455 }
456
457 dev_dbg(arizona->dev, "HP impedance %d ohms\n", val);
458 return val;
459}
460
461static int arizona_hpdet_do_id(struct arizona_priv *info, int *reading,
462 bool *mic)
463{
464 struct arizona *arizona = info->arizona;
465 int id_gpio = arizona->pdata.hpdet_id_gpio;
466
467 if (!arizona->pdata.hpdet_acc_id)
468 return 0;
469
470 /*
471 * If we're using HPDET for accessory identification we need
472 * to take multiple measurements, step through them in sequence.
473 */
474 info->hpdet_res[info->num_hpdet_res++] = *reading;
475
476 /* Only check the mic directly if we didn't already ID it */
477 if (id_gpio && info->num_hpdet_res == 1) {
478 dev_dbg(arizona->dev, "Measuring mic\n");
479
480 regmap_update_bits(arizona->regmap,
481 ARIZONA_ACCESSORY_DETECT_MODE_1,
482 ARIZONA_ACCDET_MODE_MASK |
483 ARIZONA_ACCDET_SRC,
484 ARIZONA_ACCDET_MODE_HPR |
485 info->micd_modes[0].src);
486
487 gpio_set_value_cansleep(id_gpio, 1);
488
489 regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
490 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
491 return -EAGAIN;
492 }
493
494 /* OK, got both. Now, compare... */
495 dev_dbg(arizona->dev, "HPDET measured %d %d\n",
496 info->hpdet_res[0], info->hpdet_res[1]);
497
498 /* Take the headphone impedance for the main report */
499 *reading = info->hpdet_res[0];
500
501 /* Sometimes we get false readings due to slow insert */
502 if (*reading >= ARIZONA_HPDET_MAX && !info->hpdet_retried) {
503 dev_dbg(arizona->dev, "Retrying high impedance\n");
504 info->num_hpdet_res = 0;
505 info->hpdet_retried = true;
506 arizona_start_hpdet_acc_id(info);
507 pm_runtime_put(arizona->dev);
508 return -EAGAIN;
509 }
510
511 /*
512 * If we measure the mic as high impedance
513 */
514 if (!id_gpio || info->hpdet_res[1] > 50) {
515 dev_dbg(arizona->dev, "Detected mic\n");
516 *mic = true;
517 info->detecting = true;
518 } else {
519 dev_dbg(arizona->dev, "Detected headphone\n");
520 }
521
522 /* Make sure everything is reset back to the real polarity */
523 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
524 ARIZONA_ACCDET_SRC, info->micd_modes[0].src);
525
526 return 0;
527}
528
529static irqreturn_t arizona_hpdet_irq(int irq, void *data)
530{
531 struct arizona_priv *info = data;
532 struct arizona *arizona = info->arizona;
533 int id_gpio = arizona->pdata.hpdet_id_gpio;
534 int ret, reading, state, report;
535 bool mic = false;
536
537 mutex_lock(&info->lock);
538
539 /* If we got a spurious IRQ for some reason then ignore it */
540 if (!info->hpdet_active) {
541 dev_warn(arizona->dev, "Spurious HPDET IRQ\n");
542 mutex_unlock(&info->lock);
543 return IRQ_NONE;
544 }
545
546 /* If the cable was removed while measuring ignore the result */
547 state = info->jack->status & SND_JACK_MECHANICAL;
548 if (!state) {
549 dev_dbg(arizona->dev, "Ignoring HPDET for removed cable\n");
550 goto done;
551 }
552
553 ret = arizona_hpdet_read(info);
554 if (ret == -EAGAIN)
555 goto out;
556 else if (ret < 0)
557 goto done;
558 reading = ret;
559
560 /* Reset back to starting range */
561 regmap_update_bits(arizona->regmap,
562 ARIZONA_HEADPHONE_DETECT_1,
563 ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
564 0);
565
566 ret = arizona_hpdet_do_id(info, &reading, &mic);
567 if (ret == -EAGAIN)
568 goto out;
569 else if (ret < 0)
570 goto done;
571
572 /* Report high impedence cables as line outputs */
573 if (reading >= 5000)
574 report = SND_JACK_LINEOUT;
575 else
576 report = SND_JACK_HEADPHONE;
577
578 snd_soc_jack_report(info->jack, report, SND_JACK_LINEOUT | SND_JACK_HEADPHONE);
579
580done:
581 /* Reset back to starting range */
582 regmap_update_bits(arizona->regmap,
583 ARIZONA_HEADPHONE_DETECT_1,
584 ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
585 0);
586
587 arizona_extcon_hp_clamp(info, false);
588
589 if (id_gpio)
590 gpio_set_value_cansleep(id_gpio, 0);
591
592 /* If we have a mic then reenable MICDET */
593 if (state && (mic || info->mic))
594 arizona_start_mic(info);
595
596 if (info->hpdet_active) {
597 pm_runtime_put_autosuspend(arizona->dev);
598 info->hpdet_active = false;
599 }
600
601 /* Do not set hp_det done when the cable has been unplugged */
602 if (state)
603 info->hpdet_done = true;
604
605out:
606 mutex_unlock(&info->lock);
607
608 return IRQ_HANDLED;
609}
610
611static void arizona_identify_headphone(struct arizona_priv *info)
612{
613 struct arizona *arizona = info->arizona;
614 int ret;
615
616 if (info->hpdet_done)
617 return;
618
619 dev_dbg(arizona->dev, "Starting HPDET\n");
620
621 /* Make sure we keep the device enabled during the measurement */
622 pm_runtime_get_sync(arizona->dev);
623
624 info->hpdet_active = true;
625
626 arizona_stop_mic(info);
627
628 arizona_extcon_hp_clamp(info, true);
629
630 ret = regmap_update_bits(arizona->regmap,
631 ARIZONA_ACCESSORY_DETECT_MODE_1,
632 ARIZONA_ACCDET_MODE_MASK,
633 arizona->pdata.hpdet_channel);
634 if (ret != 0) {
635 dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
636 goto err;
637 }
638
639 ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
640 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
641 if (ret) {
642 dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n", ret);
643 goto err;
644 }
645
646 return;
647
648err:
649 arizona_extcon_hp_clamp(info, false);
650 pm_runtime_put_autosuspend(arizona->dev);
651
652 /* Just report headphone */
653 snd_soc_jack_report(info->jack, SND_JACK_HEADPHONE,
654 SND_JACK_LINEOUT | SND_JACK_HEADPHONE);
655
656 if (info->mic)
657 arizona_start_mic(info);
658
659 info->hpdet_active = false;
660}
661
662static void arizona_start_hpdet_acc_id(struct arizona_priv *info)
663{
664 struct arizona *arizona = info->arizona;
665 int hp_reading = 32;
666 bool mic;
667 int ret;
668
669 dev_dbg(arizona->dev, "Starting identification via HPDET\n");
670
671 /* Make sure we keep the device enabled during the measurement */
672 pm_runtime_get_sync(arizona->dev);
673
674 info->hpdet_active = true;
675
676 arizona_extcon_hp_clamp(info, true);
677
678 ret = regmap_update_bits(arizona->regmap,
679 ARIZONA_ACCESSORY_DETECT_MODE_1,
680 ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
681 info->micd_modes[0].src |
682 arizona->pdata.hpdet_channel);
683 if (ret != 0) {
684 dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
685 goto err;
686 }
687
688 if (arizona->pdata.hpdet_acc_id_line) {
689 ret = regmap_update_bits(arizona->regmap,
690 ARIZONA_HEADPHONE_DETECT_1,
691 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
692 if (ret) {
693 dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n", ret);
694 goto err;
695 }
696 } else {
697 arizona_hpdet_do_id(info, &hp_reading, &mic);
698 }
699
700 return;
701
702err:
703 /* Just report headphone */
704 snd_soc_jack_report(info->jack, SND_JACK_HEADPHONE,
705 SND_JACK_LINEOUT | SND_JACK_HEADPHONE);
706
707 info->hpdet_active = false;
708}
709
710static void arizona_micd_timeout_work(struct work_struct *work)
711{
712 struct arizona_priv *info = container_of(work,
713 struct arizona_priv,
714 micd_timeout_work.work);
715
716 mutex_lock(&info->lock);
717
718 dev_dbg(info->arizona->dev, "MICD timed out, reporting HP\n");
719
720 info->detecting = false;
721
722 arizona_identify_headphone(info);
723
724 mutex_unlock(&info->lock);
725}
726
727static int arizona_micd_adc_read(struct arizona_priv *info)
728{
729 struct arizona *arizona = info->arizona;
730 unsigned int val;
731 int ret;
732
733 /* Must disable MICD before we read the ADCVAL */
734 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
735 ARIZONA_MICD_ENA, 0);
736
737 ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_4, &val);
738 if (ret) {
739 dev_err(arizona->dev, "Failed to read MICDET_ADCVAL: %d\n", ret);
740 return ret;
741 }
742
743 dev_dbg(arizona->dev, "MICDET_ADCVAL: %x\n", val);
744
745 val &= ARIZONA_MICDET_ADCVAL_MASK;
746 if (val < ARRAY_SIZE(arizona_micd_levels))
747 val = arizona_micd_levels[val];
748 else
749 val = INT_MAX;
750
751 if (val <= QUICK_HEADPHONE_MAX_OHM)
752 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_0;
753 else if (val <= MICROPHONE_MIN_OHM)
754 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_1;
755 else if (val <= MICROPHONE_MAX_OHM)
756 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_8;
757 else
758 val = ARIZONA_MICD_LVL_8;
759
760 return val;
761}
762
763static int arizona_micd_read(struct arizona_priv *info)
764{
765 struct arizona *arizona = info->arizona;
766 unsigned int val = 0;
767 int ret, i;
768
769 for (i = 0; i < 10 && !(val & MICD_LVL_0_TO_8); i++) {
770 ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
771 if (ret) {
772 dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret);
773 return ret;
774 }
775
776 dev_dbg(arizona->dev, "MICDET: %x\n", val);
777
778 if (!(val & ARIZONA_MICD_VALID)) {
779 dev_warn(arizona->dev, "Microphone detection state invalid\n");
780 return -EINVAL;
781 }
782 }
783
784 if (i == 10 && !(val & MICD_LVL_0_TO_8)) {
785 dev_err(arizona->dev, "Failed to get valid MICDET value\n");
786 return -EINVAL;
787 }
788
789 return val;
790}
791
792static int arizona_micdet_reading(void *priv)
793{
794 struct arizona_priv *info = priv;
795 struct arizona *arizona = info->arizona;
796 int ret, val;
797
798 if (info->detecting && arizona->pdata.micd_software_compare)
799 ret = arizona_micd_adc_read(info);
800 else
801 ret = arizona_micd_read(info);
802 if (ret < 0)
803 return ret;
804
805 val = ret;
806
807 /* Due to jack detect this should never happen */
808 if (!(val & ARIZONA_MICD_STS)) {
809 dev_warn(arizona->dev, "Detected open circuit\n");
810 info->mic = false;
811 info->detecting = false;
812 arizona_identify_headphone(info);
813 return 0;
814 }
815
816 /* If we got a high impedence we should have a headset, report it. */
817 if (val & ARIZONA_MICD_LVL_8) {
818 info->mic = true;
819 info->detecting = false;
820
821 arizona_identify_headphone(info);
822
823 snd_soc_jack_report(info->jack, SND_JACK_MICROPHONE, SND_JACK_MICROPHONE);
824
825 /* Don't need to regulate for button detection */
826 ret = regulator_allow_bypass(info->micvdd, true);
827 if (ret)
828 dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n", ret);
829
830 return 0;
831 }
832
833 /* If we detected a lower impedence during initial startup
834 * then we probably have the wrong polarity, flip it. Don't
835 * do this for the lowest impedences to speed up detection of
836 * plain headphones. If both polarities report a low
837 * impedence then give up and report headphones.
838 */
839 if (val & MICD_LVL_1_TO_7) {
840 if (info->jack_flips >= info->micd_num_modes * 10) {
841 dev_dbg(arizona->dev, "Detected HP/line\n");
842
843 info->detecting = false;
844
845 arizona_identify_headphone(info);
846 } else {
847 info->micd_mode++;
848 if (info->micd_mode == info->micd_num_modes)
849 info->micd_mode = 0;
850 arizona_extcon_set_mode(info, info->micd_mode);
851
852 info->jack_flips++;
853
854 if (arizona->pdata.micd_software_compare)
855 regmap_update_bits(arizona->regmap,
856 ARIZONA_MIC_DETECT_1,
857 ARIZONA_MICD_ENA,
858 ARIZONA_MICD_ENA);
859
860 queue_delayed_work(system_power_efficient_wq,
861 &info->micd_timeout_work,
862 msecs_to_jiffies(arizona->pdata.micd_timeout));
863 }
864
865 return 0;
866 }
867
868 /*
869 * If we're still detecting and we detect a short then we've
870 * got a headphone.
871 */
872 dev_dbg(arizona->dev, "Headphone detected\n");
873 info->detecting = false;
874
875 arizona_identify_headphone(info);
876
877 return 0;
878}
879
880static int arizona_button_reading(void *priv)
881{
882 struct arizona_priv *info = priv;
883 struct arizona *arizona = info->arizona;
884 int val, key, lvl;
885
886 val = arizona_micd_read(info);
887 if (val < 0)
888 return val;
889
890 /*
891 * If we're still detecting and we detect a short then we've
892 * got a headphone. Otherwise it's a button press.
893 */
894 if (val & MICD_LVL_0_TO_7) {
895 if (info->mic) {
896 dev_dbg(arizona->dev, "Mic button detected\n");
897
898 lvl = val & ARIZONA_MICD_LVL_MASK;
899 lvl >>= ARIZONA_MICD_LVL_SHIFT;
900
901 if (lvl && ffs(lvl) - 1 < info->num_micd_ranges) {
902 key = ffs(lvl) - 1;
903 snd_soc_jack_report(info->jack,
904 SND_JACK_BTN_0 >> key,
905 info->micd_button_mask);
906 } else {
907 dev_err(arizona->dev, "Button out of range\n");
908 }
909 } else {
910 dev_warn(arizona->dev, "Button with no mic: %x\n", val);
911 }
912 } else {
913 dev_dbg(arizona->dev, "Mic button released\n");
914 snd_soc_jack_report(info->jack, 0, info->micd_button_mask);
915 arizona_extcon_pulse_micbias(info);
916 }
917
918 return 0;
919}
920
921static void arizona_micd_detect(struct work_struct *work)
922{
923 struct arizona_priv *info = container_of(work,
924 struct arizona_priv,
925 micd_detect_work.work);
926 struct arizona *arizona = info->arizona;
927
928 cancel_delayed_work_sync(&info->micd_timeout_work);
929
930 mutex_lock(&info->lock);
931
932 /* If the cable was removed while measuring ignore the result */
933 if (!(info->jack->status & SND_JACK_MECHANICAL)) {
934 dev_dbg(arizona->dev, "Ignoring MICDET for removed cable\n");
935 mutex_unlock(&info->lock);
936 return;
937 }
938
939 if (info->detecting)
940 arizona_micdet_reading(info);
941 else
942 arizona_button_reading(info);
943
944 pm_runtime_mark_last_busy(arizona->dev);
945 mutex_unlock(&info->lock);
946}
947
948static irqreturn_t arizona_micdet(int irq, void *data)
949{
950 struct arizona_priv *info = data;
951 struct arizona *arizona = info->arizona;
952 int debounce = arizona->pdata.micd_detect_debounce;
953
954 cancel_delayed_work_sync(&info->micd_detect_work);
955 cancel_delayed_work_sync(&info->micd_timeout_work);
956
957 mutex_lock(&info->lock);
958 if (!info->detecting)
959 debounce = 0;
960 mutex_unlock(&info->lock);
961
962 if (debounce)
963 queue_delayed_work(system_power_efficient_wq,
964 &info->micd_detect_work,
965 msecs_to_jiffies(debounce));
966 else
967 arizona_micd_detect(&info->micd_detect_work.work);
968
969 return IRQ_HANDLED;
970}
971
972static void arizona_hpdet_work(struct work_struct *work)
973{
974 struct arizona_priv *info = container_of(work,
975 struct arizona_priv,
976 hpdet_work.work);
977
978 mutex_lock(&info->lock);
979 arizona_start_hpdet_acc_id(info);
980 mutex_unlock(&info->lock);
981}
982
983static int arizona_hpdet_wait(struct arizona_priv *info)
984{
985 struct arizona *arizona = info->arizona;
986 unsigned int val;
987 int i, ret;
988
989 for (i = 0; i < ARIZONA_HPDET_WAIT_COUNT; i++) {
990 ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2,
991 &val);
992 if (ret) {
993 dev_err(arizona->dev, "Failed to read HPDET state: %d\n", ret);
994 return ret;
995 }
996
997 switch (info->hpdet_ip_version) {
998 case 0:
999 if (val & ARIZONA_HP_DONE)
1000 return 0;
1001 break;
1002 default:
1003 if (val & ARIZONA_HP_DONE_B)
1004 return 0;
1005 break;
1006 }
1007
1008 msleep(ARIZONA_HPDET_WAIT_DELAY_MS);
1009 }
1010
1011 dev_warn(arizona->dev, "HPDET did not appear to complete\n");
1012
1013 return -ETIMEDOUT;
1014}
1015
1016static irqreturn_t arizona_jackdet(int irq, void *data)
1017{
1018 struct arizona_priv *info = data;
1019 struct arizona *arizona = info->arizona;
1020 unsigned int val, present, mask;
1021 bool cancelled_hp, cancelled_mic;
1022 int ret, i;
1023
1024 cancelled_hp = cancel_delayed_work_sync(&info->hpdet_work);
1025 cancelled_mic = cancel_delayed_work_sync(&info->micd_timeout_work);
1026
1027 pm_runtime_get_sync(arizona->dev);
1028
1029 mutex_lock(&info->lock);
1030
1031 if (info->micd_clamp) {
1032 mask = ARIZONA_MICD_CLAMP_STS;
1033 present = 0;
1034 } else {
1035 mask = ARIZONA_JD1_STS;
1036 if (arizona->pdata.jd_invert)
1037 present = 0;
1038 else
1039 present = ARIZONA_JD1_STS;
1040 }
1041
1042 ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
1043 if (ret) {
1044 dev_err(arizona->dev, "Failed to read jackdet status: %d\n", ret);
1045 mutex_unlock(&info->lock);
1046 pm_runtime_put_autosuspend(arizona->dev);
1047 return IRQ_NONE;
1048 }
1049
1050 val &= mask;
1051 if (val == info->last_jackdet) {
1052 dev_dbg(arizona->dev, "Suppressing duplicate JACKDET\n");
1053 if (cancelled_hp)
1054 queue_delayed_work(system_power_efficient_wq,
1055 &info->hpdet_work,
1056 msecs_to_jiffies(HPDET_DEBOUNCE));
1057
1058 if (cancelled_mic) {
1059 int micd_timeout = arizona->pdata.micd_timeout;
1060
1061 queue_delayed_work(system_power_efficient_wq,
1062 &info->micd_timeout_work,
1063 msecs_to_jiffies(micd_timeout));
1064 }
1065
1066 goto out;
1067 }
1068 info->last_jackdet = val;
1069
1070 if (info->last_jackdet == present) {
1071 dev_dbg(arizona->dev, "Detected jack\n");
1072 snd_soc_jack_report(info->jack, SND_JACK_MECHANICAL, SND_JACK_MECHANICAL);
1073
1074 info->detecting = true;
1075 info->mic = false;
1076 info->jack_flips = 0;
1077
1078 if (!arizona->pdata.hpdet_acc_id) {
1079 arizona_start_mic(info);
1080 } else {
1081 queue_delayed_work(system_power_efficient_wq,
1082 &info->hpdet_work,
1083 msecs_to_jiffies(HPDET_DEBOUNCE));
1084 }
1085
1086 if (info->micd_clamp || !arizona->pdata.jd_invert)
1087 regmap_update_bits(arizona->regmap,
1088 ARIZONA_JACK_DETECT_DEBOUNCE,
1089 ARIZONA_MICD_CLAMP_DB |
1090 ARIZONA_JD1_DB, 0);
1091 } else {
1092 dev_dbg(arizona->dev, "Detected jack removal\n");
1093
1094 arizona_stop_mic(info);
1095
1096 info->num_hpdet_res = 0;
1097 for (i = 0; i < ARRAY_SIZE(info->hpdet_res); i++)
1098 info->hpdet_res[i] = 0;
1099 info->mic = false;
1100 info->hpdet_done = false;
1101 info->hpdet_retried = false;
1102
1103 snd_soc_jack_report(info->jack, 0, ARIZONA_JACK_MASK | info->micd_button_mask);
1104
1105 /*
1106 * If the jack was removed during a headphone detection we
1107 * need to wait for the headphone detection to finish, as
1108 * it can not be aborted. We don't want to be able to start
1109 * a new headphone detection from a fresh insert until this
1110 * one is finished.
1111 */
1112 arizona_hpdet_wait(info);
1113
1114 regmap_update_bits(arizona->regmap,
1115 ARIZONA_JACK_DETECT_DEBOUNCE,
1116 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB,
1117 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB);
1118 }
1119
1120out:
1121 /* Clear trig_sts to make sure DCVDD is not forced up */
1122 regmap_write(arizona->regmap, ARIZONA_AOD_WKUP_AND_TRIG,
1123 ARIZONA_MICD_CLAMP_FALL_TRIG_STS |
1124 ARIZONA_MICD_CLAMP_RISE_TRIG_STS |
1125 ARIZONA_JD1_FALL_TRIG_STS |
1126 ARIZONA_JD1_RISE_TRIG_STS);
1127
1128 mutex_unlock(&info->lock);
1129
1130 pm_runtime_mark_last_busy(arizona->dev);
1131 pm_runtime_put_autosuspend(arizona->dev);
1132
1133 return IRQ_HANDLED;
1134}
1135
1136/* Map a level onto a slot in the register bank */
1137static void arizona_micd_set_level(struct arizona *arizona, int index,
1138 unsigned int level)
1139{
1140 int reg;
1141 unsigned int mask;
1142
1143 reg = ARIZONA_MIC_DETECT_LEVEL_4 - (index / 2);
1144
1145 if (!(index % 2)) {
1146 mask = 0x3f00;
1147 level <<= 8;
1148 } else {
1149 mask = 0x3f;
1150 }
1151
1152 /* Program the level itself */
1153 regmap_update_bits(arizona->regmap, reg, mask, level);
1154}
1155
1156static int arizona_extcon_get_micd_configs(struct device *dev,
1157 struct arizona *arizona)
1158{
1159 const char * const prop = "wlf,micd-configs";
1160 const int entries_per_config = 3;
1161 struct arizona_micd_config *micd_configs;
1162 int nconfs, ret;
1163 int i, j;
1164 u32 *vals;
1165
1166 nconfs = device_property_count_u32(arizona->dev, prop);
1167 if (nconfs <= 0)
1168 return 0;
1169
1170 vals = kcalloc(nconfs, sizeof(u32), GFP_KERNEL);
1171 if (!vals)
1172 return -ENOMEM;
1173
1174 ret = device_property_read_u32_array(arizona->dev, prop, vals, nconfs);
1175 if (ret < 0)
1176 goto out;
1177
1178 nconfs /= entries_per_config;
1179 micd_configs = devm_kcalloc(dev, nconfs, sizeof(*micd_configs),
1180 GFP_KERNEL);
1181 if (!micd_configs) {
1182 ret = -ENOMEM;
1183 goto out;
1184 }
1185
1186 for (i = 0, j = 0; i < nconfs; ++i) {
1187 micd_configs[i].src = vals[j++] ? ARIZONA_ACCDET_SRC : 0;
1188 micd_configs[i].bias = vals[j++];
1189 micd_configs[i].gpio = vals[j++];
1190 }
1191
1192 arizona->pdata.micd_configs = micd_configs;
1193 arizona->pdata.num_micd_configs = nconfs;
1194
1195out:
1196 kfree(vals);
1197 return ret;
1198}
1199
1200static int arizona_extcon_device_get_pdata(struct device *dev,
1201 struct arizona *arizona)
1202{
1203 struct arizona_pdata *pdata = &arizona->pdata;
1204 unsigned int val = ARIZONA_ACCDET_MODE_HPL;
1205 int ret;
1206
1207 device_property_read_u32(arizona->dev, "wlf,hpdet-channel", &val);
1208 switch (val) {
1209 case ARIZONA_ACCDET_MODE_HPL:
1210 case ARIZONA_ACCDET_MODE_HPR:
1211 pdata->hpdet_channel = val;
1212 break;
1213 default:
1214 dev_err(arizona->dev, "Wrong wlf,hpdet-channel DT value %d\n", val);
1215 pdata->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
1216 }
1217
1218 device_property_read_u32(arizona->dev, "wlf,micd-detect-debounce",
1219 &pdata->micd_detect_debounce);
1220
1221 device_property_read_u32(arizona->dev, "wlf,micd-bias-start-time",
1222 &pdata->micd_bias_start_time);
1223
1224 device_property_read_u32(arizona->dev, "wlf,micd-rate",
1225 &pdata->micd_rate);
1226
1227 device_property_read_u32(arizona->dev, "wlf,micd-dbtime",
1228 &pdata->micd_dbtime);
1229
1230 device_property_read_u32(arizona->dev, "wlf,micd-timeout-ms",
1231 &pdata->micd_timeout);
1232
1233 pdata->micd_force_micbias = device_property_read_bool(arizona->dev,
1234 "wlf,micd-force-micbias");
1235
1236 pdata->micd_software_compare = device_property_read_bool(arizona->dev,
1237 "wlf,micd-software-compare");
1238
1239 pdata->jd_invert = device_property_read_bool(arizona->dev,
1240 "wlf,jd-invert");
1241
1242 device_property_read_u32(arizona->dev, "wlf,gpsw", &pdata->gpsw);
1243
1244 pdata->jd_gpio5 = device_property_read_bool(arizona->dev,
1245 "wlf,use-jd2");
1246 pdata->jd_gpio5_nopull = device_property_read_bool(arizona->dev,
1247 "wlf,use-jd2-nopull");
1248
1249 ret = arizona_extcon_get_micd_configs(dev, arizona);
1250 if (ret < 0)
1251 dev_err(arizona->dev, "Failed to read micd configs: %d\n", ret);
1252
1253 return 0;
1254}
1255
1256int arizona_jack_codec_dev_probe(struct arizona_priv *info, struct device *dev)
1257{
1258 struct arizona *arizona = info->arizona;
1259 struct arizona_pdata *pdata = &arizona->pdata;
1260 int ret, mode;
1261
1262 if (!dev_get_platdata(arizona->dev))
1263 arizona_extcon_device_get_pdata(dev, arizona);
1264
1265 info->micvdd = devm_regulator_get(dev, "MICVDD");
1266 if (IS_ERR(info->micvdd))
1267 return dev_err_probe(arizona->dev, PTR_ERR(info->micvdd), "getting MICVDD\n");
1268
1269 mutex_init(&info->lock);
1270 info->last_jackdet = ~(ARIZONA_MICD_CLAMP_STS | ARIZONA_JD1_STS);
1271 INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work);
1272 INIT_DELAYED_WORK(&info->micd_detect_work, arizona_micd_detect);
1273 INIT_DELAYED_WORK(&info->micd_timeout_work, arizona_micd_timeout_work);
1274
1275 switch (arizona->type) {
1276 case WM5102:
1277 switch (arizona->rev) {
1278 case 0:
1279 info->micd_reva = true;
1280 break;
1281 default:
1282 info->micd_clamp = true;
1283 info->hpdet_ip_version = 1;
1284 break;
1285 }
1286 break;
1287 case WM5110:
1288 case WM8280:
1289 switch (arizona->rev) {
1290 case 0 ... 2:
1291 break;
1292 default:
1293 info->micd_clamp = true;
1294 info->hpdet_ip_version = 2;
1295 break;
1296 }
1297 break;
1298 case WM8998:
1299 case WM1814:
1300 info->micd_clamp = true;
1301 info->hpdet_ip_version = 2;
1302 break;
1303 default:
1304 break;
1305 }
1306
1307 if (!pdata->micd_timeout)
1308 pdata->micd_timeout = DEFAULT_MICD_TIMEOUT;
1309
1310 if (pdata->num_micd_configs) {
1311 info->micd_modes = pdata->micd_configs;
1312 info->micd_num_modes = pdata->num_micd_configs;
1313 } else {
1314 info->micd_modes = micd_default_modes;
1315 info->micd_num_modes = ARRAY_SIZE(micd_default_modes);
1316 }
1317
1318 if (arizona->pdata.gpsw > 0)
1319 regmap_update_bits(arizona->regmap, ARIZONA_GP_SWITCH_1,
1320 ARIZONA_SW1_MODE_MASK, arizona->pdata.gpsw);
1321
1322 if (pdata->micd_pol_gpio > 0) {
1323 if (info->micd_modes[0].gpio)
1324 mode = GPIOF_OUT_INIT_HIGH;
1325 else
1326 mode = GPIOF_OUT_INIT_LOW;
1327
1328 ret = devm_gpio_request_one(dev, pdata->micd_pol_gpio,
1329 mode, "MICD polarity");
1330 if (ret != 0) {
1331 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
1332 pdata->micd_pol_gpio, ret);
1333 return ret;
1334 }
1335
1336 info->micd_pol_gpio = gpio_to_desc(pdata->micd_pol_gpio);
1337 } else {
1338 if (info->micd_modes[0].gpio)
1339 mode = GPIOD_OUT_HIGH;
1340 else
1341 mode = GPIOD_OUT_LOW;
1342
1343 /* We can't use devm here because we need to do the get
1344 * against the MFD device, as that is where the of_node
1345 * will reside, but if we devm against that the GPIO
1346 * will not be freed if the extcon driver is unloaded.
1347 */
1348 info->micd_pol_gpio = gpiod_get_optional(arizona->dev,
1349 "wlf,micd-pol",
1350 mode);
1351 if (IS_ERR(info->micd_pol_gpio)) {
1352 ret = PTR_ERR(info->micd_pol_gpio);
1353 dev_err_probe(arizona->dev, ret, "getting microphone polarity GPIO\n");
1354 return ret;
1355 }
1356 }
1357
1358 if (arizona->pdata.hpdet_id_gpio > 0) {
1359 ret = devm_gpio_request_one(dev, arizona->pdata.hpdet_id_gpio,
1360 GPIOF_OUT_INIT_LOW,
1361 "HPDET");
1362 if (ret != 0) {
1363 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
1364 arizona->pdata.hpdet_id_gpio, ret);
1365 gpiod_put(info->micd_pol_gpio);
1366 return ret;
1367 }
1368 }
1369
1370 return 0;
1371}
1372EXPORT_SYMBOL_GPL(arizona_jack_codec_dev_probe);
1373
1374int arizona_jack_codec_dev_remove(struct arizona_priv *info)
1375{
1376 gpiod_put(info->micd_pol_gpio);
1377 return 0;
1378}
1379EXPORT_SYMBOL_GPL(arizona_jack_codec_dev_remove);
1380
1381static int arizona_jack_enable_jack_detect(struct arizona_priv *info,
1382 struct snd_soc_jack *jack)
1383{
1384 struct arizona *arizona = info->arizona;
1385 struct arizona_pdata *pdata = &arizona->pdata;
1386 unsigned int val;
1387 unsigned int clamp_mode;
1388 int jack_irq_fall, jack_irq_rise;
1389 int ret, i, j;
1390
1391 if (arizona->pdata.micd_bias_start_time)
1392 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1393 ARIZONA_MICD_BIAS_STARTTIME_MASK,
1394 arizona->pdata.micd_bias_start_time
1395 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT);
1396
1397 if (arizona->pdata.micd_rate)
1398 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1399 ARIZONA_MICD_RATE_MASK,
1400 arizona->pdata.micd_rate
1401 << ARIZONA_MICD_RATE_SHIFT);
1402
1403 switch (arizona->pdata.micd_dbtime) {
1404 case MICD_DBTIME_FOUR_READINGS:
1405 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1406 ARIZONA_MICD_DBTIME_MASK,
1407 ARIZONA_MICD_DBTIME);
1408 break;
1409 case MICD_DBTIME_TWO_READINGS:
1410 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1411 ARIZONA_MICD_DBTIME_MASK, 0);
1412 break;
1413 default:
1414 break;
1415 }
1416
1417 BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) <
1418 ARIZONA_NUM_MICD_BUTTON_LEVELS);
1419
1420 if (arizona->pdata.num_micd_ranges) {
1421 info->micd_ranges = pdata->micd_ranges;
1422 info->num_micd_ranges = pdata->num_micd_ranges;
1423 } else {
1424 info->micd_ranges = micd_default_ranges;
1425 info->num_micd_ranges = ARRAY_SIZE(micd_default_ranges);
1426 }
1427
1428 if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_BUTTONS) {
1429 dev_err(arizona->dev, "Too many MICD ranges: %d > %d\n",
1430 arizona->pdata.num_micd_ranges, ARIZONA_MAX_MICD_BUTTONS);
1431 return -EINVAL;
1432 }
1433
1434 if (info->num_micd_ranges > 1) {
1435 for (i = 1; i < info->num_micd_ranges; i++) {
1436 if (info->micd_ranges[i - 1].max >
1437 info->micd_ranges[i].max) {
1438 dev_err(arizona->dev, "MICD ranges must be sorted\n");
1439 return -EINVAL;
1440 }
1441 }
1442 }
1443
1444 /* Disable all buttons by default */
1445 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
1446 ARIZONA_MICD_LVL_SEL_MASK, 0x81);
1447
1448 /* Set up all the buttons the user specified */
1449 for (i = 0; i < info->num_micd_ranges; i++) {
1450 for (j = 0; j < ARIZONA_NUM_MICD_BUTTON_LEVELS; j++)
1451 if (arizona_micd_levels[j] >= info->micd_ranges[i].max)
1452 break;
1453
1454 if (j == ARIZONA_NUM_MICD_BUTTON_LEVELS) {
1455 dev_err(arizona->dev, "Unsupported MICD level %d\n",
1456 info->micd_ranges[i].max);
1457 return -EINVAL;
1458 }
1459
1460 dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n",
1461 arizona_micd_levels[j], i);
1462
1463 arizona_micd_set_level(arizona, i, j);
1464
1465 /* SND_JACK_BTN_# masks start with the most significant bit */
1466 info->micd_button_mask |= SND_JACK_BTN_0 >> i;
1467 snd_jack_set_key(jack->jack, SND_JACK_BTN_0 >> i,
1468 info->micd_ranges[i].key);
1469
1470 /* Enable reporting of that range */
1471 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
1472 1 << i, 1 << i);
1473 }
1474
1475 /* Set all the remaining keys to a maximum */
1476 for (; i < ARIZONA_MAX_MICD_RANGE; i++)
1477 arizona_micd_set_level(arizona, i, 0x3f);
1478
1479 /*
1480 * If we have a clamp use it, activating in conjunction with
1481 * GPIO5 if that is connected for jack detect operation.
1482 */
1483 if (info->micd_clamp) {
1484 if (arizona->pdata.jd_gpio5) {
1485 /* Put the GPIO into input mode with optional pull */
1486 val = 0xc101;
1487 if (arizona->pdata.jd_gpio5_nopull)
1488 val &= ~ARIZONA_GPN_PU;
1489
1490 regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL,
1491 val);
1492
1493 if (arizona->pdata.jd_invert)
1494 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH_GP5H;
1495 else
1496 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL_GP5H;
1497 } else {
1498 if (arizona->pdata.jd_invert)
1499 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH;
1500 else
1501 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL;
1502 }
1503
1504 regmap_update_bits(arizona->regmap,
1505 ARIZONA_MICD_CLAMP_CONTROL,
1506 ARIZONA_MICD_CLAMP_MODE_MASK, clamp_mode);
1507
1508 regmap_update_bits(arizona->regmap,
1509 ARIZONA_JACK_DETECT_DEBOUNCE,
1510 ARIZONA_MICD_CLAMP_DB,
1511 ARIZONA_MICD_CLAMP_DB);
1512 }
1513
1514 arizona_extcon_set_mode(info, 0);
1515
1516 info->jack = jack;
1517
1518 pm_runtime_get_sync(arizona->dev);
1519
1520 if (info->micd_clamp) {
1521 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
1522 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
1523 } else {
1524 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
1525 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
1526 }
1527
1528 ret = arizona_request_irq(arizona, jack_irq_rise,
1529 "JACKDET rise", arizona_jackdet, info);
1530 if (ret != 0) {
1531 dev_err(arizona->dev, "Failed to get JACKDET rise IRQ: %d\n", ret);
1532 goto err_pm;
1533 }
1534
1535 ret = arizona_set_irq_wake(arizona, jack_irq_rise, 1);
1536 if (ret != 0) {
1537 dev_err(arizona->dev, "Failed to set JD rise IRQ wake: %d\n", ret);
1538 goto err_rise;
1539 }
1540
1541 ret = arizona_request_irq(arizona, jack_irq_fall,
1542 "JACKDET fall", arizona_jackdet, info);
1543 if (ret != 0) {
1544 dev_err(arizona->dev, "Failed to get JD fall IRQ: %d\n", ret);
1545 goto err_rise_wake;
1546 }
1547
1548 ret = arizona_set_irq_wake(arizona, jack_irq_fall, 1);
1549 if (ret != 0) {
1550 dev_err(arizona->dev, "Failed to set JD fall IRQ wake: %d\n", ret);
1551 goto err_fall;
1552 }
1553
1554 ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET,
1555 "MICDET", arizona_micdet, info);
1556 if (ret != 0) {
1557 dev_err(arizona->dev, "Failed to get MICDET IRQ: %d\n", ret);
1558 goto err_fall_wake;
1559 }
1560
1561 ret = arizona_request_irq(arizona, ARIZONA_IRQ_HPDET,
1562 "HPDET", arizona_hpdet_irq, info);
1563 if (ret != 0) {
1564 dev_err(arizona->dev, "Failed to get HPDET IRQ: %d\n", ret);
1565 goto err_micdet;
1566 }
1567
1568 arizona_clk32k_enable(arizona);
1569 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE,
1570 ARIZONA_JD1_DB, ARIZONA_JD1_DB);
1571 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1572 ARIZONA_JD1_ENA, ARIZONA_JD1_ENA);
1573
1574 ret = regulator_allow_bypass(info->micvdd, true);
1575 if (ret != 0)
1576 dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n", ret);
1577
1578 pm_runtime_put(arizona->dev);
1579
1580 return 0;
1581
1582err_micdet:
1583 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
1584err_fall_wake:
1585 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1586err_fall:
1587 arizona_free_irq(arizona, jack_irq_fall, info);
1588err_rise_wake:
1589 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1590err_rise:
1591 arizona_free_irq(arizona, jack_irq_rise, info);
1592err_pm:
1593 pm_runtime_put(arizona->dev);
1594 info->jack = NULL;
1595 return ret;
1596}
1597
1598static int arizona_jack_disable_jack_detect(struct arizona_priv *info)
1599{
1600 struct arizona *arizona = info->arizona;
1601 int jack_irq_rise, jack_irq_fall;
1602 bool change;
1603 int ret;
1604
1605 if (!info->jack)
1606 return 0;
1607
1608 if (info->micd_clamp) {
1609 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
1610 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
1611 } else {
1612 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
1613 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
1614 }
1615
1616 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1617 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1618 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
1619 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
1620 arizona_free_irq(arizona, jack_irq_rise, info);
1621 arizona_free_irq(arizona, jack_irq_fall, info);
1622 cancel_delayed_work_sync(&info->hpdet_work);
1623 cancel_delayed_work_sync(&info->micd_detect_work);
1624 cancel_delayed_work_sync(&info->micd_timeout_work);
1625
1626 ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
1627 ARIZONA_MICD_ENA, 0,
1628 &change);
1629 if (ret < 0) {
1630 dev_err(arizona->dev, "Failed to disable micd on remove: %d\n", ret);
1631 } else if (change) {
1632 regulator_disable(info->micvdd);
1633 pm_runtime_put(arizona->dev);
1634 }
1635
1636 regmap_update_bits(arizona->regmap,
1637 ARIZONA_MICD_CLAMP_CONTROL,
1638 ARIZONA_MICD_CLAMP_MODE_MASK, 0);
1639 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1640 ARIZONA_JD1_ENA, 0);
1641 arizona_clk32k_disable(arizona);
1642 info->jack = NULL;
1643
1644 return 0;
1645}
1646
1647int arizona_jack_set_jack(struct snd_soc_component *component,
1648 struct snd_soc_jack *jack, void *data)
1649{
1650 struct arizona_priv *info = snd_soc_component_get_drvdata(component);
1651
1652 if (jack)
1653 return arizona_jack_enable_jack_detect(info, jack);
1654 else
1655 return arizona_jack_disable_jack_detect(info);
1656}
1657EXPORT_SYMBOL_GPL(arizona_jack_set_jack);