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1/*
2 * extcon-arizona.c - Extcon driver Wolfson Arizona devices
3 *
4 * Copyright (C) 2012-2014 Wolfson Microelectronics plc
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16
17#include <linux/kernel.h>
18#include <linux/module.h>
19#include <linux/i2c.h>
20#include <linux/slab.h>
21#include <linux/interrupt.h>
22#include <linux/err.h>
23#include <linux/gpio/consumer.h>
24#include <linux/gpio.h>
25#include <linux/input.h>
26#include <linux/platform_device.h>
27#include <linux/pm_runtime.h>
28#include <linux/property.h>
29#include <linux/regulator/consumer.h>
30#include <linux/extcon.h>
31
32#include <sound/soc.h>
33
34#include <linux/mfd/arizona/core.h>
35#include <linux/mfd/arizona/pdata.h>
36#include <linux/mfd/arizona/registers.h>
37#include <dt-bindings/mfd/arizona.h>
38
39#define ARIZONA_MAX_MICD_RANGE 8
40
41#define ARIZONA_MICD_CLAMP_MODE_JDL 0x4
42#define ARIZONA_MICD_CLAMP_MODE_JDH 0x5
43#define ARIZONA_MICD_CLAMP_MODE_JDL_GP5H 0x9
44#define ARIZONA_MICD_CLAMP_MODE_JDH_GP5H 0xb
45
46#define ARIZONA_TST_CAP_DEFAULT 0x3
47#define ARIZONA_TST_CAP_CLAMP 0x1
48
49#define ARIZONA_HPDET_MAX 10000
50
51#define HPDET_DEBOUNCE 500
52#define DEFAULT_MICD_TIMEOUT 2000
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
70struct arizona_extcon_info {
71 struct device *dev;
72 struct arizona *arizona;
73 struct mutex lock;
74 struct regulator *micvdd;
75 struct input_dev *input;
76
77 u16 last_jackdet;
78
79 int micd_mode;
80 const struct arizona_micd_config *micd_modes;
81 int micd_num_modes;
82
83 const struct arizona_micd_range *micd_ranges;
84 int num_micd_ranges;
85
86 int micd_timeout;
87
88 bool micd_reva;
89 bool micd_clamp;
90
91 struct delayed_work hpdet_work;
92 struct delayed_work micd_detect_work;
93 struct delayed_work micd_timeout_work;
94
95 bool hpdet_active;
96 bool hpdet_done;
97 bool hpdet_retried;
98
99 int num_hpdet_res;
100 unsigned int hpdet_res[3];
101
102 bool mic;
103 bool detecting;
104 int jack_flips;
105
106 int hpdet_ip_version;
107
108 struct extcon_dev *edev;
109
110 struct gpio_desc *micd_pol_gpio;
111};
112
113static const struct arizona_micd_config micd_default_modes[] = {
114 { ARIZONA_ACCDET_SRC, 1, 0 },
115 { 0, 2, 1 },
116};
117
118static const struct arizona_micd_range micd_default_ranges[] = {
119 { .max = 11, .key = BTN_0 },
120 { .max = 28, .key = BTN_1 },
121 { .max = 54, .key = BTN_2 },
122 { .max = 100, .key = BTN_3 },
123 { .max = 186, .key = BTN_4 },
124 { .max = 430, .key = BTN_5 },
125};
126
127/* The number of levels in arizona_micd_levels valid for button thresholds */
128#define ARIZONA_NUM_MICD_BUTTON_LEVELS 64
129
130static const int arizona_micd_levels[] = {
131 3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46,
132 49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100,
133 105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245,
134 270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071,
135 1257, 30000,
136};
137
138static const unsigned int arizona_cable[] = {
139 EXTCON_MECHANICAL,
140 EXTCON_JACK_MICROPHONE,
141 EXTCON_JACK_HEADPHONE,
142 EXTCON_JACK_LINE_OUT,
143 EXTCON_NONE,
144};
145
146static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info);
147
148static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
149 bool clamp)
150{
151 struct arizona *arizona = info->arizona;
152 unsigned int mask = 0, val = 0;
153 unsigned int cap_sel = 0;
154 int ret;
155
156 switch (arizona->type) {
157 case WM8998:
158 case WM1814:
159 mask = 0;
160 break;
161 case WM5110:
162 case WM8280:
163 mask = ARIZONA_HP1L_SHRTO | ARIZONA_HP1L_FLWR |
164 ARIZONA_HP1L_SHRTI;
165 if (clamp) {
166 val = ARIZONA_HP1L_SHRTO;
167 cap_sel = ARIZONA_TST_CAP_CLAMP;
168 } else {
169 val = ARIZONA_HP1L_FLWR | ARIZONA_HP1L_SHRTI;
170 cap_sel = ARIZONA_TST_CAP_DEFAULT;
171 }
172
173 ret = regmap_update_bits(arizona->regmap,
174 ARIZONA_HP_TEST_CTRL_1,
175 ARIZONA_HP1_TST_CAP_SEL_MASK,
176 cap_sel);
177 if (ret != 0)
178 dev_warn(arizona->dev,
179 "Failed to set TST_CAP_SEL: %d\n", ret);
180 break;
181 default:
182 mask = ARIZONA_RMV_SHRT_HP1L;
183 if (clamp)
184 val = ARIZONA_RMV_SHRT_HP1L;
185 break;
186 }
187
188 snd_soc_dapm_mutex_lock(arizona->dapm);
189
190 arizona->hpdet_clamp = clamp;
191
192 /* Keep the HP output stages disabled while doing the clamp */
193 if (clamp) {
194 ret = regmap_update_bits(arizona->regmap,
195 ARIZONA_OUTPUT_ENABLES_1,
196 ARIZONA_OUT1L_ENA |
197 ARIZONA_OUT1R_ENA, 0);
198 if (ret != 0)
199 dev_warn(arizona->dev,
200 "Failed to disable headphone outputs: %d\n",
201 ret);
202 }
203
204 if (mask) {
205 ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1L,
206 mask, val);
207 if (ret != 0)
208 dev_warn(arizona->dev, "Failed to do clamp: %d\n",
209 ret);
210
211 ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1R,
212 mask, val);
213 if (ret != 0)
214 dev_warn(arizona->dev, "Failed to do clamp: %d\n",
215 ret);
216 }
217
218 /* Restore the desired state while not doing the clamp */
219 if (!clamp) {
220 ret = regmap_update_bits(arizona->regmap,
221 ARIZONA_OUTPUT_ENABLES_1,
222 ARIZONA_OUT1L_ENA |
223 ARIZONA_OUT1R_ENA, arizona->hp_ena);
224 if (ret != 0)
225 dev_warn(arizona->dev,
226 "Failed to restore headphone outputs: %d\n",
227 ret);
228 }
229
230 snd_soc_dapm_mutex_unlock(arizona->dapm);
231}
232
233static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
234{
235 struct arizona *arizona = info->arizona;
236
237 mode %= info->micd_num_modes;
238
239 if (arizona->pdata.micd_pol_gpio > 0)
240 gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
241 info->micd_modes[mode].gpio);
242 else
243 gpiod_set_value_cansleep(info->micd_pol_gpio,
244 info->micd_modes[mode].gpio);
245
246 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
247 ARIZONA_MICD_BIAS_SRC_MASK,
248 info->micd_modes[mode].bias <<
249 ARIZONA_MICD_BIAS_SRC_SHIFT);
250 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
251 ARIZONA_ACCDET_SRC, info->micd_modes[mode].src);
252
253 info->micd_mode = mode;
254
255 dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode);
256}
257
258static const char *arizona_extcon_get_micbias(struct arizona_extcon_info *info)
259{
260 switch (info->micd_modes[0].bias) {
261 case 1:
262 return "MICBIAS1";
263 case 2:
264 return "MICBIAS2";
265 case 3:
266 return "MICBIAS3";
267 default:
268 return "MICVDD";
269 }
270}
271
272static void arizona_extcon_pulse_micbias(struct arizona_extcon_info *info)
273{
274 struct arizona *arizona = info->arizona;
275 const char *widget = arizona_extcon_get_micbias(info);
276 struct snd_soc_dapm_context *dapm = arizona->dapm;
277 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
278 int ret;
279
280 ret = snd_soc_component_force_enable_pin(component, widget);
281 if (ret != 0)
282 dev_warn(arizona->dev, "Failed to enable %s: %d\n",
283 widget, ret);
284
285 snd_soc_dapm_sync(dapm);
286
287 if (!arizona->pdata.micd_force_micbias) {
288 ret = snd_soc_component_disable_pin(component, widget);
289 if (ret != 0)
290 dev_warn(arizona->dev, "Failed to disable %s: %d\n",
291 widget, ret);
292
293 snd_soc_dapm_sync(dapm);
294 }
295}
296
297static void arizona_start_mic(struct arizona_extcon_info *info)
298{
299 struct arizona *arizona = info->arizona;
300 bool change;
301 int ret;
302 unsigned int mode;
303
304 /* Microphone detection can't use idle mode */
305 pm_runtime_get(info->dev);
306
307 if (info->detecting) {
308 ret = regulator_allow_bypass(info->micvdd, false);
309 if (ret != 0) {
310 dev_err(arizona->dev,
311 "Failed to regulate MICVDD: %d\n",
312 ret);
313 }
314 }
315
316 ret = regulator_enable(info->micvdd);
317 if (ret != 0) {
318 dev_err(arizona->dev, "Failed to enable MICVDD: %d\n",
319 ret);
320 }
321
322 if (info->micd_reva) {
323 regmap_write(arizona->regmap, 0x80, 0x3);
324 regmap_write(arizona->regmap, 0x294, 0);
325 regmap_write(arizona->regmap, 0x80, 0x0);
326 }
327
328 if (info->detecting && arizona->pdata.micd_software_compare)
329 mode = ARIZONA_ACCDET_MODE_ADC;
330 else
331 mode = ARIZONA_ACCDET_MODE_MIC;
332
333 regmap_update_bits(arizona->regmap,
334 ARIZONA_ACCESSORY_DETECT_MODE_1,
335 ARIZONA_ACCDET_MODE_MASK, mode);
336
337 arizona_extcon_pulse_micbias(info);
338
339 regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
340 ARIZONA_MICD_ENA, ARIZONA_MICD_ENA,
341 &change);
342 if (!change) {
343 regulator_disable(info->micvdd);
344 pm_runtime_put_autosuspend(info->dev);
345 }
346}
347
348static void arizona_stop_mic(struct arizona_extcon_info *info)
349{
350 struct arizona *arizona = info->arizona;
351 const char *widget = arizona_extcon_get_micbias(info);
352 struct snd_soc_dapm_context *dapm = arizona->dapm;
353 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
354 bool change;
355 int ret;
356
357 regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
358 ARIZONA_MICD_ENA, 0,
359 &change);
360
361 ret = snd_soc_component_disable_pin(component, widget);
362 if (ret != 0)
363 dev_warn(arizona->dev,
364 "Failed to disable %s: %d\n",
365 widget, ret);
366
367 snd_soc_dapm_sync(dapm);
368
369 if (info->micd_reva) {
370 regmap_write(arizona->regmap, 0x80, 0x3);
371 regmap_write(arizona->regmap, 0x294, 2);
372 regmap_write(arizona->regmap, 0x80, 0x0);
373 }
374
375 ret = regulator_allow_bypass(info->micvdd, true);
376 if (ret != 0) {
377 dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
378 ret);
379 }
380
381 if (change) {
382 regulator_disable(info->micvdd);
383 pm_runtime_mark_last_busy(info->dev);
384 pm_runtime_put_autosuspend(info->dev);
385 }
386}
387
388static struct {
389 unsigned int threshold;
390 unsigned int factor_a;
391 unsigned int factor_b;
392} arizona_hpdet_b_ranges[] = {
393 { 100, 5528, 362464 },
394 { 169, 11084, 6186851 },
395 { 169, 11065, 65460395 },
396};
397
398#define ARIZONA_HPDET_B_RANGE_MAX 0x3fb
399
400static struct {
401 int min;
402 int max;
403} arizona_hpdet_c_ranges[] = {
404 { 0, 30 },
405 { 8, 100 },
406 { 100, 1000 },
407 { 1000, 10000 },
408};
409
410static int arizona_hpdet_read(struct arizona_extcon_info *info)
411{
412 struct arizona *arizona = info->arizona;
413 unsigned int val, range;
414 int ret;
415
416 ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2, &val);
417 if (ret != 0) {
418 dev_err(arizona->dev, "Failed to read HPDET status: %d\n",
419 ret);
420 return ret;
421 }
422
423 switch (info->hpdet_ip_version) {
424 case 0:
425 if (!(val & ARIZONA_HP_DONE)) {
426 dev_err(arizona->dev, "HPDET did not complete: %x\n",
427 val);
428 return -EAGAIN;
429 }
430
431 val &= ARIZONA_HP_LVL_MASK;
432 break;
433
434 case 1:
435 if (!(val & ARIZONA_HP_DONE_B)) {
436 dev_err(arizona->dev, "HPDET did not complete: %x\n",
437 val);
438 return -EAGAIN;
439 }
440
441 ret = regmap_read(arizona->regmap, ARIZONA_HP_DACVAL, &val);
442 if (ret != 0) {
443 dev_err(arizona->dev, "Failed to read HP value: %d\n",
444 ret);
445 return -EAGAIN;
446 }
447
448 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
449 &range);
450 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
451 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
452
453 if (range < ARRAY_SIZE(arizona_hpdet_b_ranges) - 1 &&
454 (val < arizona_hpdet_b_ranges[range].threshold ||
455 val >= ARIZONA_HPDET_B_RANGE_MAX)) {
456 range++;
457 dev_dbg(arizona->dev, "Moving to HPDET range %d\n",
458 range);
459 regmap_update_bits(arizona->regmap,
460 ARIZONA_HEADPHONE_DETECT_1,
461 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
462 range <<
463 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
464 return -EAGAIN;
465 }
466
467 /* If we go out of range report top of range */
468 if (val < arizona_hpdet_b_ranges[range].threshold ||
469 val >= ARIZONA_HPDET_B_RANGE_MAX) {
470 dev_dbg(arizona->dev, "Measurement out of range\n");
471 return ARIZONA_HPDET_MAX;
472 }
473
474 dev_dbg(arizona->dev, "HPDET read %d in range %d\n",
475 val, range);
476
477 val = arizona_hpdet_b_ranges[range].factor_b
478 / ((val * 100) -
479 arizona_hpdet_b_ranges[range].factor_a);
480 break;
481
482 case 2:
483 if (!(val & ARIZONA_HP_DONE_B)) {
484 dev_err(arizona->dev, "HPDET did not complete: %x\n",
485 val);
486 return -EAGAIN;
487 }
488
489 val &= ARIZONA_HP_LVL_B_MASK;
490 /* Convert to ohms, the value is in 0.5 ohm increments */
491 val /= 2;
492
493 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
494 &range);
495 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
496 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
497
498 /* Skip up a range, or report? */
499 if (range < ARRAY_SIZE(arizona_hpdet_c_ranges) - 1 &&
500 (val >= arizona_hpdet_c_ranges[range].max)) {
501 range++;
502 dev_dbg(arizona->dev, "Moving to HPDET range %d-%d\n",
503 arizona_hpdet_c_ranges[range].min,
504 arizona_hpdet_c_ranges[range].max);
505 regmap_update_bits(arizona->regmap,
506 ARIZONA_HEADPHONE_DETECT_1,
507 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
508 range <<
509 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
510 return -EAGAIN;
511 }
512
513 if (range && (val < arizona_hpdet_c_ranges[range].min)) {
514 dev_dbg(arizona->dev, "Reporting range boundary %d\n",
515 arizona_hpdet_c_ranges[range].min);
516 val = arizona_hpdet_c_ranges[range].min;
517 }
518 break;
519
520 default:
521 dev_warn(arizona->dev, "Unknown HPDET IP revision %d\n",
522 info->hpdet_ip_version);
523 return -EINVAL;
524 }
525
526 dev_dbg(arizona->dev, "HP impedance %d ohms\n", val);
527 return val;
528}
529
530static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading,
531 bool *mic)
532{
533 struct arizona *arizona = info->arizona;
534 int id_gpio = arizona->pdata.hpdet_id_gpio;
535
536 /*
537 * If we're using HPDET for accessory identification we need
538 * to take multiple measurements, step through them in sequence.
539 */
540 if (arizona->pdata.hpdet_acc_id) {
541 info->hpdet_res[info->num_hpdet_res++] = *reading;
542
543 /* Only check the mic directly if we didn't already ID it */
544 if (id_gpio && info->num_hpdet_res == 1) {
545 dev_dbg(arizona->dev, "Measuring mic\n");
546
547 regmap_update_bits(arizona->regmap,
548 ARIZONA_ACCESSORY_DETECT_MODE_1,
549 ARIZONA_ACCDET_MODE_MASK |
550 ARIZONA_ACCDET_SRC,
551 ARIZONA_ACCDET_MODE_HPR |
552 info->micd_modes[0].src);
553
554 gpio_set_value_cansleep(id_gpio, 1);
555
556 regmap_update_bits(arizona->regmap,
557 ARIZONA_HEADPHONE_DETECT_1,
558 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
559 return -EAGAIN;
560 }
561
562 /* OK, got both. Now, compare... */
563 dev_dbg(arizona->dev, "HPDET measured %d %d\n",
564 info->hpdet_res[0], info->hpdet_res[1]);
565
566 /* Take the headphone impedance for the main report */
567 *reading = info->hpdet_res[0];
568
569 /* Sometimes we get false readings due to slow insert */
570 if (*reading >= ARIZONA_HPDET_MAX && !info->hpdet_retried) {
571 dev_dbg(arizona->dev, "Retrying high impedance\n");
572 info->num_hpdet_res = 0;
573 info->hpdet_retried = true;
574 arizona_start_hpdet_acc_id(info);
575 pm_runtime_put(info->dev);
576 return -EAGAIN;
577 }
578
579 /*
580 * If we measure the mic as high impedance
581 */
582 if (!id_gpio || info->hpdet_res[1] > 50) {
583 dev_dbg(arizona->dev, "Detected mic\n");
584 *mic = true;
585 info->detecting = true;
586 } else {
587 dev_dbg(arizona->dev, "Detected headphone\n");
588 }
589
590 /* Make sure everything is reset back to the real polarity */
591 regmap_update_bits(arizona->regmap,
592 ARIZONA_ACCESSORY_DETECT_MODE_1,
593 ARIZONA_ACCDET_SRC,
594 info->micd_modes[0].src);
595 }
596
597 return 0;
598}
599
600static irqreturn_t arizona_hpdet_irq(int irq, void *data)
601{
602 struct arizona_extcon_info *info = data;
603 struct arizona *arizona = info->arizona;
604 int id_gpio = arizona->pdata.hpdet_id_gpio;
605 unsigned int report = EXTCON_JACK_HEADPHONE;
606 int ret, reading;
607 bool mic = false;
608
609 mutex_lock(&info->lock);
610
611 /* If we got a spurious IRQ for some reason then ignore it */
612 if (!info->hpdet_active) {
613 dev_warn(arizona->dev, "Spurious HPDET IRQ\n");
614 mutex_unlock(&info->lock);
615 return IRQ_NONE;
616 }
617
618 /* If the cable was removed while measuring ignore the result */
619 ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
620 if (ret < 0) {
621 dev_err(arizona->dev, "Failed to check cable state: %d\n",
622 ret);
623 goto out;
624 } else if (!ret) {
625 dev_dbg(arizona->dev, "Ignoring HPDET for removed cable\n");
626 goto done;
627 }
628
629 ret = arizona_hpdet_read(info);
630 if (ret == -EAGAIN)
631 goto out;
632 else if (ret < 0)
633 goto done;
634 reading = ret;
635
636 /* Reset back to starting range */
637 regmap_update_bits(arizona->regmap,
638 ARIZONA_HEADPHONE_DETECT_1,
639 ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
640 0);
641
642 ret = arizona_hpdet_do_id(info, &reading, &mic);
643 if (ret == -EAGAIN)
644 goto out;
645 else if (ret < 0)
646 goto done;
647
648 /* Report high impedence cables as line outputs */
649 if (reading >= 5000)
650 report = EXTCON_JACK_LINE_OUT;
651 else
652 report = EXTCON_JACK_HEADPHONE;
653
654 ret = extcon_set_state_sync(info->edev, report, true);
655 if (ret != 0)
656 dev_err(arizona->dev, "Failed to report HP/line: %d\n",
657 ret);
658
659done:
660 /* Reset back to starting range */
661 regmap_update_bits(arizona->regmap,
662 ARIZONA_HEADPHONE_DETECT_1,
663 ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
664 0);
665
666 arizona_extcon_hp_clamp(info, false);
667
668 if (id_gpio)
669 gpio_set_value_cansleep(id_gpio, 0);
670
671 /* Revert back to MICDET mode */
672 regmap_update_bits(arizona->regmap,
673 ARIZONA_ACCESSORY_DETECT_MODE_1,
674 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
675
676 /* If we have a mic then reenable MICDET */
677 if (mic || info->mic)
678 arizona_start_mic(info);
679
680 if (info->hpdet_active) {
681 pm_runtime_put_autosuspend(info->dev);
682 info->hpdet_active = false;
683 }
684
685 info->hpdet_done = true;
686
687out:
688 mutex_unlock(&info->lock);
689
690 return IRQ_HANDLED;
691}
692
693static void arizona_identify_headphone(struct arizona_extcon_info *info)
694{
695 struct arizona *arizona = info->arizona;
696 int ret;
697
698 if (info->hpdet_done)
699 return;
700
701 dev_dbg(arizona->dev, "Starting HPDET\n");
702
703 /* Make sure we keep the device enabled during the measurement */
704 pm_runtime_get(info->dev);
705
706 info->hpdet_active = true;
707
708 if (info->mic)
709 arizona_stop_mic(info);
710
711 arizona_extcon_hp_clamp(info, true);
712
713 ret = regmap_update_bits(arizona->regmap,
714 ARIZONA_ACCESSORY_DETECT_MODE_1,
715 ARIZONA_ACCDET_MODE_MASK,
716 arizona->pdata.hpdet_channel);
717 if (ret != 0) {
718 dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
719 goto err;
720 }
721
722 ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
723 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
724 if (ret != 0) {
725 dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n",
726 ret);
727 goto err;
728 }
729
730 return;
731
732err:
733 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
734 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
735
736 /* Just report headphone */
737 ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
738 if (ret != 0)
739 dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
740
741 if (info->mic)
742 arizona_start_mic(info);
743
744 info->hpdet_active = false;
745}
746
747static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
748{
749 struct arizona *arizona = info->arizona;
750 int hp_reading = 32;
751 bool mic;
752 int ret;
753
754 dev_dbg(arizona->dev, "Starting identification via HPDET\n");
755
756 /* Make sure we keep the device enabled during the measurement */
757 pm_runtime_get_sync(info->dev);
758
759 info->hpdet_active = true;
760
761 arizona_extcon_hp_clamp(info, true);
762
763 ret = regmap_update_bits(arizona->regmap,
764 ARIZONA_ACCESSORY_DETECT_MODE_1,
765 ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
766 info->micd_modes[0].src |
767 arizona->pdata.hpdet_channel);
768 if (ret != 0) {
769 dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
770 goto err;
771 }
772
773 if (arizona->pdata.hpdet_acc_id_line) {
774 ret = regmap_update_bits(arizona->regmap,
775 ARIZONA_HEADPHONE_DETECT_1,
776 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
777 if (ret != 0) {
778 dev_err(arizona->dev,
779 "Can't start HPDETL measurement: %d\n",
780 ret);
781 goto err;
782 }
783 } else {
784 arizona_hpdet_do_id(info, &hp_reading, &mic);
785 }
786
787 return;
788
789err:
790 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
791 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
792
793 /* Just report headphone */
794 ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
795 if (ret != 0)
796 dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
797
798 info->hpdet_active = false;
799}
800
801static void arizona_micd_timeout_work(struct work_struct *work)
802{
803 struct arizona_extcon_info *info = container_of(work,
804 struct arizona_extcon_info,
805 micd_timeout_work.work);
806
807 mutex_lock(&info->lock);
808
809 dev_dbg(info->arizona->dev, "MICD timed out, reporting HP\n");
810
811 info->detecting = false;
812
813 arizona_identify_headphone(info);
814
815 arizona_stop_mic(info);
816
817 mutex_unlock(&info->lock);
818}
819
820static void arizona_micd_detect(struct work_struct *work)
821{
822 struct arizona_extcon_info *info = container_of(work,
823 struct arizona_extcon_info,
824 micd_detect_work.work);
825 struct arizona *arizona = info->arizona;
826 unsigned int val = 0, lvl;
827 int ret, i, key;
828
829 cancel_delayed_work_sync(&info->micd_timeout_work);
830
831 mutex_lock(&info->lock);
832
833 /* If the cable was removed while measuring ignore the result */
834 ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
835 if (ret < 0) {
836 dev_err(arizona->dev, "Failed to check cable state: %d\n",
837 ret);
838 mutex_unlock(&info->lock);
839 return;
840 } else if (!ret) {
841 dev_dbg(arizona->dev, "Ignoring MICDET for removed cable\n");
842 mutex_unlock(&info->lock);
843 return;
844 }
845
846 if (info->detecting && arizona->pdata.micd_software_compare) {
847 /* Must disable MICD before we read the ADCVAL */
848 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
849 ARIZONA_MICD_ENA, 0);
850 ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_4, &val);
851 if (ret != 0) {
852 dev_err(arizona->dev,
853 "Failed to read MICDET_ADCVAL: %d\n",
854 ret);
855 mutex_unlock(&info->lock);
856 return;
857 }
858
859 dev_dbg(arizona->dev, "MICDET_ADCVAL: %x\n", val);
860
861 val &= ARIZONA_MICDET_ADCVAL_MASK;
862 if (val < ARRAY_SIZE(arizona_micd_levels))
863 val = arizona_micd_levels[val];
864 else
865 val = INT_MAX;
866
867 if (val <= QUICK_HEADPHONE_MAX_OHM)
868 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_0;
869 else if (val <= MICROPHONE_MIN_OHM)
870 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_1;
871 else if (val <= MICROPHONE_MAX_OHM)
872 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_8;
873 else
874 val = ARIZONA_MICD_LVL_8;
875 }
876
877 for (i = 0; i < 10 && !(val & MICD_LVL_0_TO_8); i++) {
878 ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
879 if (ret != 0) {
880 dev_err(arizona->dev,
881 "Failed to read MICDET: %d\n", ret);
882 mutex_unlock(&info->lock);
883 return;
884 }
885
886 dev_dbg(arizona->dev, "MICDET: %x\n", val);
887
888 if (!(val & ARIZONA_MICD_VALID)) {
889 dev_warn(arizona->dev,
890 "Microphone detection state invalid\n");
891 mutex_unlock(&info->lock);
892 return;
893 }
894 }
895
896 if (i == 10 && !(val & MICD_LVL_0_TO_8)) {
897 dev_err(arizona->dev, "Failed to get valid MICDET value\n");
898 mutex_unlock(&info->lock);
899 return;
900 }
901
902 /* Due to jack detect this should never happen */
903 if (!(val & ARIZONA_MICD_STS)) {
904 dev_warn(arizona->dev, "Detected open circuit\n");
905 info->mic = false;
906 arizona_stop_mic(info);
907 info->detecting = false;
908 arizona_identify_headphone(info);
909 goto handled;
910 }
911
912 /* If we got a high impedence we should have a headset, report it. */
913 if (info->detecting && (val & ARIZONA_MICD_LVL_8)) {
914 info->mic = true;
915 info->detecting = false;
916
917 arizona_identify_headphone(info);
918
919 ret = extcon_set_state_sync(info->edev,
920 EXTCON_JACK_MICROPHONE, true);
921 if (ret != 0)
922 dev_err(arizona->dev, "Headset report failed: %d\n",
923 ret);
924
925 /* Don't need to regulate for button detection */
926 ret = regulator_allow_bypass(info->micvdd, true);
927 if (ret != 0) {
928 dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
929 ret);
930 }
931
932 goto handled;
933 }
934
935 /* If we detected a lower impedence during initial startup
936 * then we probably have the wrong polarity, flip it. Don't
937 * do this for the lowest impedences to speed up detection of
938 * plain headphones. If both polarities report a low
939 * impedence then give up and report headphones.
940 */
941 if (info->detecting && (val & MICD_LVL_1_TO_7)) {
942 if (info->jack_flips >= info->micd_num_modes * 10) {
943 dev_dbg(arizona->dev, "Detected HP/line\n");
944
945 info->detecting = false;
946
947 arizona_identify_headphone(info);
948
949 arizona_stop_mic(info);
950 } else {
951 info->micd_mode++;
952 if (info->micd_mode == info->micd_num_modes)
953 info->micd_mode = 0;
954 arizona_extcon_set_mode(info, info->micd_mode);
955
956 info->jack_flips++;
957 }
958
959 goto handled;
960 }
961
962 /*
963 * If we're still detecting and we detect a short then we've
964 * got a headphone. Otherwise it's a button press.
965 */
966 if (val & MICD_LVL_0_TO_7) {
967 if (info->mic) {
968 dev_dbg(arizona->dev, "Mic button detected\n");
969
970 lvl = val & ARIZONA_MICD_LVL_MASK;
971 lvl >>= ARIZONA_MICD_LVL_SHIFT;
972
973 for (i = 0; i < info->num_micd_ranges; i++)
974 input_report_key(info->input,
975 info->micd_ranges[i].key, 0);
976
977 WARN_ON(!lvl);
978 WARN_ON(ffs(lvl) - 1 >= info->num_micd_ranges);
979 if (lvl && ffs(lvl) - 1 < info->num_micd_ranges) {
980 key = info->micd_ranges[ffs(lvl) - 1].key;
981 input_report_key(info->input, key, 1);
982 input_sync(info->input);
983 }
984
985 } else if (info->detecting) {
986 dev_dbg(arizona->dev, "Headphone detected\n");
987 info->detecting = false;
988 arizona_stop_mic(info);
989
990 arizona_identify_headphone(info);
991 } else {
992 dev_warn(arizona->dev, "Button with no mic: %x\n",
993 val);
994 }
995 } else {
996 dev_dbg(arizona->dev, "Mic button released\n");
997 for (i = 0; i < info->num_micd_ranges; i++)
998 input_report_key(info->input,
999 info->micd_ranges[i].key, 0);
1000 input_sync(info->input);
1001 arizona_extcon_pulse_micbias(info);
1002 }
1003
1004handled:
1005 if (info->detecting) {
1006 if (arizona->pdata.micd_software_compare)
1007 regmap_update_bits(arizona->regmap,
1008 ARIZONA_MIC_DETECT_1,
1009 ARIZONA_MICD_ENA,
1010 ARIZONA_MICD_ENA);
1011
1012 queue_delayed_work(system_power_efficient_wq,
1013 &info->micd_timeout_work,
1014 msecs_to_jiffies(info->micd_timeout));
1015 }
1016
1017 pm_runtime_mark_last_busy(info->dev);
1018 mutex_unlock(&info->lock);
1019}
1020
1021static irqreturn_t arizona_micdet(int irq, void *data)
1022{
1023 struct arizona_extcon_info *info = data;
1024 struct arizona *arizona = info->arizona;
1025 int debounce = arizona->pdata.micd_detect_debounce;
1026
1027 cancel_delayed_work_sync(&info->micd_detect_work);
1028 cancel_delayed_work_sync(&info->micd_timeout_work);
1029
1030 mutex_lock(&info->lock);
1031 if (!info->detecting)
1032 debounce = 0;
1033 mutex_unlock(&info->lock);
1034
1035 if (debounce)
1036 queue_delayed_work(system_power_efficient_wq,
1037 &info->micd_detect_work,
1038 msecs_to_jiffies(debounce));
1039 else
1040 arizona_micd_detect(&info->micd_detect_work.work);
1041
1042 return IRQ_HANDLED;
1043}
1044
1045static void arizona_hpdet_work(struct work_struct *work)
1046{
1047 struct arizona_extcon_info *info = container_of(work,
1048 struct arizona_extcon_info,
1049 hpdet_work.work);
1050
1051 mutex_lock(&info->lock);
1052 arizona_start_hpdet_acc_id(info);
1053 mutex_unlock(&info->lock);
1054}
1055
1056static irqreturn_t arizona_jackdet(int irq, void *data)
1057{
1058 struct arizona_extcon_info *info = data;
1059 struct arizona *arizona = info->arizona;
1060 unsigned int val, present, mask;
1061 bool cancelled_hp, cancelled_mic;
1062 int ret, i;
1063
1064 cancelled_hp = cancel_delayed_work_sync(&info->hpdet_work);
1065 cancelled_mic = cancel_delayed_work_sync(&info->micd_timeout_work);
1066
1067 pm_runtime_get_sync(info->dev);
1068
1069 mutex_lock(&info->lock);
1070
1071 if (info->micd_clamp) {
1072 mask = ARIZONA_MICD_CLAMP_STS;
1073 present = 0;
1074 } else {
1075 mask = ARIZONA_JD1_STS;
1076 if (arizona->pdata.jd_invert)
1077 present = 0;
1078 else
1079 present = ARIZONA_JD1_STS;
1080 }
1081
1082 ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
1083 if (ret != 0) {
1084 dev_err(arizona->dev, "Failed to read jackdet status: %d\n",
1085 ret);
1086 mutex_unlock(&info->lock);
1087 pm_runtime_put_autosuspend(info->dev);
1088 return IRQ_NONE;
1089 }
1090
1091 val &= mask;
1092 if (val == info->last_jackdet) {
1093 dev_dbg(arizona->dev, "Suppressing duplicate JACKDET\n");
1094 if (cancelled_hp)
1095 queue_delayed_work(system_power_efficient_wq,
1096 &info->hpdet_work,
1097 msecs_to_jiffies(HPDET_DEBOUNCE));
1098
1099 if (cancelled_mic) {
1100 int micd_timeout = info->micd_timeout;
1101
1102 queue_delayed_work(system_power_efficient_wq,
1103 &info->micd_timeout_work,
1104 msecs_to_jiffies(micd_timeout));
1105 }
1106
1107 goto out;
1108 }
1109 info->last_jackdet = val;
1110
1111 if (info->last_jackdet == present) {
1112 dev_dbg(arizona->dev, "Detected jack\n");
1113 ret = extcon_set_state_sync(info->edev,
1114 EXTCON_MECHANICAL, true);
1115
1116 if (ret != 0)
1117 dev_err(arizona->dev, "Mechanical report failed: %d\n",
1118 ret);
1119
1120 if (!arizona->pdata.hpdet_acc_id) {
1121 info->detecting = true;
1122 info->mic = false;
1123 info->jack_flips = 0;
1124
1125 arizona_start_mic(info);
1126 } else {
1127 queue_delayed_work(system_power_efficient_wq,
1128 &info->hpdet_work,
1129 msecs_to_jiffies(HPDET_DEBOUNCE));
1130 }
1131
1132 if (info->micd_clamp || !arizona->pdata.jd_invert)
1133 regmap_update_bits(arizona->regmap,
1134 ARIZONA_JACK_DETECT_DEBOUNCE,
1135 ARIZONA_MICD_CLAMP_DB |
1136 ARIZONA_JD1_DB, 0);
1137 } else {
1138 dev_dbg(arizona->dev, "Detected jack removal\n");
1139
1140 arizona_stop_mic(info);
1141
1142 info->num_hpdet_res = 0;
1143 for (i = 0; i < ARRAY_SIZE(info->hpdet_res); i++)
1144 info->hpdet_res[i] = 0;
1145 info->mic = false;
1146 info->hpdet_done = false;
1147 info->hpdet_retried = false;
1148
1149 for (i = 0; i < info->num_micd_ranges; i++)
1150 input_report_key(info->input,
1151 info->micd_ranges[i].key, 0);
1152 input_sync(info->input);
1153
1154 for (i = 0; i < ARRAY_SIZE(arizona_cable) - 1; i++) {
1155 ret = extcon_set_state_sync(info->edev,
1156 arizona_cable[i], false);
1157 if (ret != 0)
1158 dev_err(arizona->dev,
1159 "Removal report failed: %d\n", ret);
1160 }
1161
1162 regmap_update_bits(arizona->regmap,
1163 ARIZONA_JACK_DETECT_DEBOUNCE,
1164 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB,
1165 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB);
1166 }
1167
1168 if (arizona->pdata.micd_timeout)
1169 info->micd_timeout = arizona->pdata.micd_timeout;
1170 else
1171 info->micd_timeout = DEFAULT_MICD_TIMEOUT;
1172
1173out:
1174 /* Clear trig_sts to make sure DCVDD is not forced up */
1175 regmap_write(arizona->regmap, ARIZONA_AOD_WKUP_AND_TRIG,
1176 ARIZONA_MICD_CLAMP_FALL_TRIG_STS |
1177 ARIZONA_MICD_CLAMP_RISE_TRIG_STS |
1178 ARIZONA_JD1_FALL_TRIG_STS |
1179 ARIZONA_JD1_RISE_TRIG_STS);
1180
1181 mutex_unlock(&info->lock);
1182
1183 pm_runtime_mark_last_busy(info->dev);
1184 pm_runtime_put_autosuspend(info->dev);
1185
1186 return IRQ_HANDLED;
1187}
1188
1189/* Map a level onto a slot in the register bank */
1190static void arizona_micd_set_level(struct arizona *arizona, int index,
1191 unsigned int level)
1192{
1193 int reg;
1194 unsigned int mask;
1195
1196 reg = ARIZONA_MIC_DETECT_LEVEL_4 - (index / 2);
1197
1198 if (!(index % 2)) {
1199 mask = 0x3f00;
1200 level <<= 8;
1201 } else {
1202 mask = 0x3f;
1203 }
1204
1205 /* Program the level itself */
1206 regmap_update_bits(arizona->regmap, reg, mask, level);
1207}
1208
1209static int arizona_extcon_get_micd_configs(struct device *dev,
1210 struct arizona *arizona)
1211{
1212 const char * const prop = "wlf,micd-configs";
1213 const int entries_per_config = 3;
1214 struct arizona_micd_config *micd_configs;
1215 int nconfs, ret;
1216 int i, j;
1217 u32 *vals;
1218
1219 nconfs = device_property_read_u32_array(arizona->dev, prop, NULL, 0);
1220 if (nconfs <= 0)
1221 return 0;
1222
1223 vals = kcalloc(nconfs, sizeof(u32), GFP_KERNEL);
1224 if (!vals)
1225 return -ENOMEM;
1226
1227 ret = device_property_read_u32_array(arizona->dev, prop, vals, nconfs);
1228 if (ret < 0)
1229 goto out;
1230
1231 nconfs /= entries_per_config;
1232
1233 micd_configs = devm_kzalloc(dev,
1234 nconfs * sizeof(struct arizona_micd_range),
1235 GFP_KERNEL);
1236 if (!micd_configs) {
1237 ret = -ENOMEM;
1238 goto out;
1239 }
1240
1241 for (i = 0, j = 0; i < nconfs; ++i) {
1242 micd_configs[i].src = vals[j++] ? ARIZONA_ACCDET_SRC : 0;
1243 micd_configs[i].bias = vals[j++];
1244 micd_configs[i].gpio = vals[j++];
1245 }
1246
1247 arizona->pdata.micd_configs = micd_configs;
1248 arizona->pdata.num_micd_configs = nconfs;
1249
1250out:
1251 kfree(vals);
1252 return ret;
1253}
1254
1255static int arizona_extcon_device_get_pdata(struct device *dev,
1256 struct arizona *arizona)
1257{
1258 struct arizona_pdata *pdata = &arizona->pdata;
1259 unsigned int val = ARIZONA_ACCDET_MODE_HPL;
1260 int ret;
1261
1262 device_property_read_u32(arizona->dev, "wlf,hpdet-channel", &val);
1263 switch (val) {
1264 case ARIZONA_ACCDET_MODE_HPL:
1265 case ARIZONA_ACCDET_MODE_HPR:
1266 pdata->hpdet_channel = val;
1267 break;
1268 default:
1269 dev_err(arizona->dev,
1270 "Wrong wlf,hpdet-channel DT value %d\n", val);
1271 pdata->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
1272 }
1273
1274 device_property_read_u32(arizona->dev, "wlf,micd-detect-debounce",
1275 &pdata->micd_detect_debounce);
1276
1277 device_property_read_u32(arizona->dev, "wlf,micd-bias-start-time",
1278 &pdata->micd_bias_start_time);
1279
1280 device_property_read_u32(arizona->dev, "wlf,micd-rate",
1281 &pdata->micd_rate);
1282
1283 device_property_read_u32(arizona->dev, "wlf,micd-dbtime",
1284 &pdata->micd_dbtime);
1285
1286 device_property_read_u32(arizona->dev, "wlf,micd-timeout-ms",
1287 &pdata->micd_timeout);
1288
1289 pdata->micd_force_micbias = device_property_read_bool(arizona->dev,
1290 "wlf,micd-force-micbias");
1291
1292 pdata->micd_software_compare = device_property_read_bool(arizona->dev,
1293 "wlf,micd-software-compare");
1294
1295 pdata->jd_invert = device_property_read_bool(arizona->dev,
1296 "wlf,jd-invert");
1297
1298 device_property_read_u32(arizona->dev, "wlf,gpsw", &pdata->gpsw);
1299
1300 pdata->jd_gpio5 = device_property_read_bool(arizona->dev,
1301 "wlf,use-jd2");
1302 pdata->jd_gpio5_nopull = device_property_read_bool(arizona->dev,
1303 "wlf,use-jd2-nopull");
1304
1305 ret = arizona_extcon_get_micd_configs(dev, arizona);
1306 if (ret < 0)
1307 dev_err(arizona->dev, "Failed to read micd configs: %d\n", ret);
1308
1309 return 0;
1310}
1311
1312static int arizona_extcon_probe(struct platform_device *pdev)
1313{
1314 struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
1315 struct arizona_pdata *pdata = &arizona->pdata;
1316 struct arizona_extcon_info *info;
1317 unsigned int val;
1318 unsigned int clamp_mode;
1319 int jack_irq_fall, jack_irq_rise;
1320 int ret, mode, i, j;
1321
1322 if (!arizona->dapm || !arizona->dapm->card)
1323 return -EPROBE_DEFER;
1324
1325 info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
1326 if (!info)
1327 return -ENOMEM;
1328
1329 if (!dev_get_platdata(arizona->dev))
1330 arizona_extcon_device_get_pdata(&pdev->dev, arizona);
1331
1332 info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
1333 if (IS_ERR(info->micvdd)) {
1334 ret = PTR_ERR(info->micvdd);
1335 dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
1336 return ret;
1337 }
1338
1339 mutex_init(&info->lock);
1340 info->arizona = arizona;
1341 info->dev = &pdev->dev;
1342 info->last_jackdet = ~(ARIZONA_MICD_CLAMP_STS | ARIZONA_JD1_STS);
1343 INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work);
1344 INIT_DELAYED_WORK(&info->micd_detect_work, arizona_micd_detect);
1345 INIT_DELAYED_WORK(&info->micd_timeout_work, arizona_micd_timeout_work);
1346 platform_set_drvdata(pdev, info);
1347
1348 switch (arizona->type) {
1349 case WM5102:
1350 switch (arizona->rev) {
1351 case 0:
1352 info->micd_reva = true;
1353 break;
1354 default:
1355 info->micd_clamp = true;
1356 info->hpdet_ip_version = 1;
1357 break;
1358 }
1359 break;
1360 case WM5110:
1361 case WM8280:
1362 switch (arizona->rev) {
1363 case 0 ... 2:
1364 break;
1365 default:
1366 info->micd_clamp = true;
1367 info->hpdet_ip_version = 2;
1368 break;
1369 }
1370 break;
1371 case WM8998:
1372 case WM1814:
1373 info->micd_clamp = true;
1374 info->hpdet_ip_version = 2;
1375 break;
1376 default:
1377 break;
1378 }
1379
1380 info->edev = devm_extcon_dev_allocate(&pdev->dev, arizona_cable);
1381 if (IS_ERR(info->edev)) {
1382 dev_err(&pdev->dev, "failed to allocate extcon device\n");
1383 return -ENOMEM;
1384 }
1385
1386 ret = devm_extcon_dev_register(&pdev->dev, info->edev);
1387 if (ret < 0) {
1388 dev_err(arizona->dev, "extcon_dev_register() failed: %d\n",
1389 ret);
1390 return ret;
1391 }
1392
1393 info->input = devm_input_allocate_device(&pdev->dev);
1394 if (!info->input) {
1395 dev_err(arizona->dev, "Can't allocate input dev\n");
1396 ret = -ENOMEM;
1397 goto err_register;
1398 }
1399
1400 info->input->name = "Headset";
1401 info->input->phys = "arizona/extcon";
1402
1403 if (pdata->num_micd_configs) {
1404 info->micd_modes = pdata->micd_configs;
1405 info->micd_num_modes = pdata->num_micd_configs;
1406 } else {
1407 info->micd_modes = micd_default_modes;
1408 info->micd_num_modes = ARRAY_SIZE(micd_default_modes);
1409 }
1410
1411 if (arizona->pdata.gpsw > 0)
1412 regmap_update_bits(arizona->regmap, ARIZONA_GP_SWITCH_1,
1413 ARIZONA_SW1_MODE_MASK, arizona->pdata.gpsw);
1414
1415 if (arizona->pdata.micd_pol_gpio > 0) {
1416 if (info->micd_modes[0].gpio)
1417 mode = GPIOF_OUT_INIT_HIGH;
1418 else
1419 mode = GPIOF_OUT_INIT_LOW;
1420
1421 ret = devm_gpio_request_one(&pdev->dev,
1422 arizona->pdata.micd_pol_gpio,
1423 mode,
1424 "MICD polarity");
1425 if (ret != 0) {
1426 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
1427 arizona->pdata.micd_pol_gpio, ret);
1428 goto err_register;
1429 }
1430 } else {
1431 if (info->micd_modes[0].gpio)
1432 mode = GPIOD_OUT_HIGH;
1433 else
1434 mode = GPIOD_OUT_LOW;
1435
1436 /* We can't use devm here because we need to do the get
1437 * against the MFD device, as that is where the of_node
1438 * will reside, but if we devm against that the GPIO
1439 * will not be freed if the extcon driver is unloaded.
1440 */
1441 info->micd_pol_gpio = gpiod_get_optional(arizona->dev,
1442 "wlf,micd-pol",
1443 GPIOD_OUT_LOW);
1444 if (IS_ERR(info->micd_pol_gpio)) {
1445 ret = PTR_ERR(info->micd_pol_gpio);
1446 dev_err(arizona->dev,
1447 "Failed to get microphone polarity GPIO: %d\n",
1448 ret);
1449 goto err_register;
1450 }
1451 }
1452
1453 if (arizona->pdata.hpdet_id_gpio > 0) {
1454 ret = devm_gpio_request_one(&pdev->dev,
1455 arizona->pdata.hpdet_id_gpio,
1456 GPIOF_OUT_INIT_LOW,
1457 "HPDET");
1458 if (ret != 0) {
1459 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
1460 arizona->pdata.hpdet_id_gpio, ret);
1461 goto err_gpio;
1462 }
1463 }
1464
1465 if (arizona->pdata.micd_bias_start_time)
1466 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1467 ARIZONA_MICD_BIAS_STARTTIME_MASK,
1468 arizona->pdata.micd_bias_start_time
1469 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT);
1470
1471 if (arizona->pdata.micd_rate)
1472 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1473 ARIZONA_MICD_RATE_MASK,
1474 arizona->pdata.micd_rate
1475 << ARIZONA_MICD_RATE_SHIFT);
1476
1477 switch (arizona->pdata.micd_dbtime) {
1478 case MICD_DBTIME_FOUR_READINGS:
1479 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1480 ARIZONA_MICD_DBTIME_MASK,
1481 ARIZONA_MICD_DBTIME);
1482 break;
1483 case MICD_DBTIME_TWO_READINGS:
1484 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1485 ARIZONA_MICD_DBTIME_MASK, 0);
1486 break;
1487 default:
1488 break;
1489 }
1490
1491 BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) <
1492 ARIZONA_NUM_MICD_BUTTON_LEVELS);
1493
1494 if (arizona->pdata.num_micd_ranges) {
1495 info->micd_ranges = pdata->micd_ranges;
1496 info->num_micd_ranges = pdata->num_micd_ranges;
1497 } else {
1498 info->micd_ranges = micd_default_ranges;
1499 info->num_micd_ranges = ARRAY_SIZE(micd_default_ranges);
1500 }
1501
1502 if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_RANGE) {
1503 dev_err(arizona->dev, "Too many MICD ranges: %d\n",
1504 arizona->pdata.num_micd_ranges);
1505 }
1506
1507 if (info->num_micd_ranges > 1) {
1508 for (i = 1; i < info->num_micd_ranges; i++) {
1509 if (info->micd_ranges[i - 1].max >
1510 info->micd_ranges[i].max) {
1511 dev_err(arizona->dev,
1512 "MICD ranges must be sorted\n");
1513 ret = -EINVAL;
1514 goto err_gpio;
1515 }
1516 }
1517 }
1518
1519 /* Disable all buttons by default */
1520 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
1521 ARIZONA_MICD_LVL_SEL_MASK, 0x81);
1522
1523 /* Set up all the buttons the user specified */
1524 for (i = 0; i < info->num_micd_ranges; i++) {
1525 for (j = 0; j < ARIZONA_NUM_MICD_BUTTON_LEVELS; j++)
1526 if (arizona_micd_levels[j] >= info->micd_ranges[i].max)
1527 break;
1528
1529 if (j == ARIZONA_NUM_MICD_BUTTON_LEVELS) {
1530 dev_err(arizona->dev, "Unsupported MICD level %d\n",
1531 info->micd_ranges[i].max);
1532 ret = -EINVAL;
1533 goto err_gpio;
1534 }
1535
1536 dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n",
1537 arizona_micd_levels[j], i);
1538
1539 arizona_micd_set_level(arizona, i, j);
1540 input_set_capability(info->input, EV_KEY,
1541 info->micd_ranges[i].key);
1542
1543 /* Enable reporting of that range */
1544 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
1545 1 << i, 1 << i);
1546 }
1547
1548 /* Set all the remaining keys to a maximum */
1549 for (; i < ARIZONA_MAX_MICD_RANGE; i++)
1550 arizona_micd_set_level(arizona, i, 0x3f);
1551
1552 /*
1553 * If we have a clamp use it, activating in conjunction with
1554 * GPIO5 if that is connected for jack detect operation.
1555 */
1556 if (info->micd_clamp) {
1557 if (arizona->pdata.jd_gpio5) {
1558 /* Put the GPIO into input mode with optional pull */
1559 val = 0xc101;
1560 if (arizona->pdata.jd_gpio5_nopull)
1561 val &= ~ARIZONA_GPN_PU;
1562
1563 regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL,
1564 val);
1565
1566 if (arizona->pdata.jd_invert)
1567 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH_GP5H;
1568 else
1569 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL_GP5H;
1570 } else {
1571 if (arizona->pdata.jd_invert)
1572 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH;
1573 else
1574 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL;
1575 }
1576
1577 regmap_update_bits(arizona->regmap,
1578 ARIZONA_MICD_CLAMP_CONTROL,
1579 ARIZONA_MICD_CLAMP_MODE_MASK, clamp_mode);
1580
1581 regmap_update_bits(arizona->regmap,
1582 ARIZONA_JACK_DETECT_DEBOUNCE,
1583 ARIZONA_MICD_CLAMP_DB,
1584 ARIZONA_MICD_CLAMP_DB);
1585 }
1586
1587 arizona_extcon_set_mode(info, 0);
1588
1589 pm_runtime_enable(&pdev->dev);
1590 pm_runtime_idle(&pdev->dev);
1591 pm_runtime_get_sync(&pdev->dev);
1592
1593 if (info->micd_clamp) {
1594 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
1595 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
1596 } else {
1597 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
1598 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
1599 }
1600
1601 ret = arizona_request_irq(arizona, jack_irq_rise,
1602 "JACKDET rise", arizona_jackdet, info);
1603 if (ret != 0) {
1604 dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
1605 ret);
1606 goto err_gpio;
1607 }
1608
1609 ret = arizona_set_irq_wake(arizona, jack_irq_rise, 1);
1610 if (ret != 0) {
1611 dev_err(&pdev->dev, "Failed to set JD rise IRQ wake: %d\n",
1612 ret);
1613 goto err_rise;
1614 }
1615
1616 ret = arizona_request_irq(arizona, jack_irq_fall,
1617 "JACKDET fall", arizona_jackdet, info);
1618 if (ret != 0) {
1619 dev_err(&pdev->dev, "Failed to get JD fall IRQ: %d\n", ret);
1620 goto err_rise_wake;
1621 }
1622
1623 ret = arizona_set_irq_wake(arizona, jack_irq_fall, 1);
1624 if (ret != 0) {
1625 dev_err(&pdev->dev, "Failed to set JD fall IRQ wake: %d\n",
1626 ret);
1627 goto err_fall;
1628 }
1629
1630 ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET,
1631 "MICDET", arizona_micdet, info);
1632 if (ret != 0) {
1633 dev_err(&pdev->dev, "Failed to get MICDET IRQ: %d\n", ret);
1634 goto err_fall_wake;
1635 }
1636
1637 ret = arizona_request_irq(arizona, ARIZONA_IRQ_HPDET,
1638 "HPDET", arizona_hpdet_irq, info);
1639 if (ret != 0) {
1640 dev_err(&pdev->dev, "Failed to get HPDET IRQ: %d\n", ret);
1641 goto err_micdet;
1642 }
1643
1644 arizona_clk32k_enable(arizona);
1645 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE,
1646 ARIZONA_JD1_DB, ARIZONA_JD1_DB);
1647 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1648 ARIZONA_JD1_ENA, ARIZONA_JD1_ENA);
1649
1650 ret = regulator_allow_bypass(info->micvdd, true);
1651 if (ret != 0)
1652 dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n",
1653 ret);
1654
1655 pm_runtime_put(&pdev->dev);
1656
1657 ret = input_register_device(info->input);
1658 if (ret) {
1659 dev_err(&pdev->dev, "Can't register input device: %d\n", ret);
1660 goto err_hpdet;
1661 }
1662
1663 return 0;
1664
1665err_hpdet:
1666 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
1667err_micdet:
1668 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
1669err_fall_wake:
1670 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1671err_fall:
1672 arizona_free_irq(arizona, jack_irq_fall, info);
1673err_rise_wake:
1674 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1675err_rise:
1676 arizona_free_irq(arizona, jack_irq_rise, info);
1677err_gpio:
1678 gpiod_put(info->micd_pol_gpio);
1679err_register:
1680 pm_runtime_disable(&pdev->dev);
1681 return ret;
1682}
1683
1684static int arizona_extcon_remove(struct platform_device *pdev)
1685{
1686 struct arizona_extcon_info *info = platform_get_drvdata(pdev);
1687 struct arizona *arizona = info->arizona;
1688 int jack_irq_rise, jack_irq_fall;
1689
1690 gpiod_put(info->micd_pol_gpio);
1691
1692 pm_runtime_disable(&pdev->dev);
1693
1694 regmap_update_bits(arizona->regmap,
1695 ARIZONA_MICD_CLAMP_CONTROL,
1696 ARIZONA_MICD_CLAMP_MODE_MASK, 0);
1697
1698 if (info->micd_clamp) {
1699 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
1700 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
1701 } else {
1702 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
1703 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
1704 }
1705
1706 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1707 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1708 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
1709 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
1710 arizona_free_irq(arizona, jack_irq_rise, info);
1711 arizona_free_irq(arizona, jack_irq_fall, info);
1712 cancel_delayed_work_sync(&info->hpdet_work);
1713 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1714 ARIZONA_JD1_ENA, 0);
1715 arizona_clk32k_disable(arizona);
1716
1717 return 0;
1718}
1719
1720static struct platform_driver arizona_extcon_driver = {
1721 .driver = {
1722 .name = "arizona-extcon",
1723 },
1724 .probe = arizona_extcon_probe,
1725 .remove = arizona_extcon_remove,
1726};
1727
1728module_platform_driver(arizona_extcon_driver);
1729
1730MODULE_DESCRIPTION("Arizona Extcon driver");
1731MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1732MODULE_LICENSE("GPL");
1733MODULE_ALIAS("platform:extcon-arizona");