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extcon: arizona: Support additional configuration of microphone detection
[mirror_ubuntu-artful-kernel.git] / drivers / extcon / extcon-arizona.c
CommitLineData
f2c32a88
MB		 1/*
2 * extcon-arizona.c - Extcon driver Wolfson Arizona devices
3 *
4 * Copyright (C) 2012 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.h>
34efe4dc 24#include <linux/input.h>
f2c32a88
MB		 25#include <linux/platform_device.h>
26#include <linux/pm_runtime.h>
27#include <linux/regulator/consumer.h>
28#include <linux/extcon.h>
29
30#include <linux/mfd/arizona/core.h>
31#include <linux/mfd/arizona/pdata.h>
32#include <linux/mfd/arizona/registers.h>
33
34efe4dc
MB		 34#define ARIZONA_NUM_BUTTONS 6
35
4f340333
MB		 36#define ARIZONA_ACCDET_MODE_MIC 0
37#define ARIZONA_ACCDET_MODE_HPL 1
38#define ARIZONA_ACCDET_MODE_HPR 2
39
f2c32a88
MB		 40struct arizona_extcon_info {
41 struct device *dev;
42 struct arizona *arizona;
43 struct mutex lock;
44 struct regulator *micvdd;
34efe4dc 45 struct input_dev *input;
f2c32a88
MB		 46
47 int micd_mode;
48 const struct arizona_micd_config *micd_modes;
49 int micd_num_modes;
50
51 bool micd_reva;
dab63eb2 52 bool micd_clamp;
f2c32a88 53
4f340333
MB		 54 bool hpdet_active;
55
dd235eea 56 int num_hpdet_res;
1eda6aa7 57 unsigned int hpdet_res[3];
dd235eea 58
f2c32a88
MB		 59 bool mic;
60 bool detecting;
61 int jack_flips;
62
4f340333
MB		 63 int hpdet_ip;
64
f2c32a88
MB		 65 struct extcon_dev edev;
66};
67
68static const struct arizona_micd_config micd_default_modes[] = {
f2c32a88 69 { 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 },
dd235eea 70 { ARIZONA_ACCDET_SRC, 1 << ARIZONA_MICD_BIAS_SRC_SHIFT, 0 },
f2c32a88
MB		 71};
72
34efe4dc
MB		 73static struct {
74 u16 status;
75 int report;
76} arizona_lvl_to_key[ARIZONA_NUM_BUTTONS] = {
77 { 0x1, BTN_0 },
78 { 0x2, BTN_1 },
79 { 0x4, BTN_2 },
80 { 0x8, BTN_3 },
81 { 0x10, BTN_4 },
82 { 0x20, BTN_5 },
83};
84
325c6423
MB		 85#define ARIZONA_CABLE_MECHANICAL 0
86#define ARIZONA_CABLE_MICROPHONE 1
87#define ARIZONA_CABLE_HEADPHONE 2
4f340333 88#define ARIZONA_CABLE_LINEOUT 3
f2c32a88
MB		 89
90static const char *arizona_cable[] = {
325c6423
MB		 91 "Mechanical",
92 "Microphone",
93 "Headphone",
4f340333 94 "Line-out",
f2c32a88
MB		 95 NULL,
96};
97
f2c32a88
MB		 98static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
99{
100 struct arizona *arizona = info->arizona;
101
cd74f7b3
MB		 102 if (arizona->pdata.micd_pol_gpio > 0)
103 gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
104 info->micd_modes[mode].gpio);
f2c32a88
MB		 105 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
106 ARIZONA_MICD_BIAS_SRC_MASK,
107 info->micd_modes[mode].bias);
108 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
109 ARIZONA_ACCDET_SRC, info->micd_modes[mode].src);
110
111 info->micd_mode = mode;
112
113 dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode);
114}
115
9b1270c7
MB		 116static void arizona_start_mic(struct arizona_extcon_info *info)
117{
118 struct arizona *arizona = info->arizona;
119 bool change;
120 int ret;
121
9b1270c7
MB		 122 /* Microphone detection can't use idle mode */
123 pm_runtime_get(info->dev);
124
125 ret = regulator_enable(info->micvdd);
126 if (ret != 0) {
127 dev_err(arizona->dev, "Failed to enable MICVDD: %d\n",
128 ret);
129 }
130
131 if (info->micd_reva) {
132 regmap_write(arizona->regmap, 0x80, 0x3);
133 regmap_write(arizona->regmap, 0x294, 0);
134 regmap_write(arizona->regmap, 0x80, 0x0);
135 }
136
137 regmap_update_bits(arizona->regmap,
138 ARIZONA_ACCESSORY_DETECT_MODE_1,
139 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
140
141 regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
142 ARIZONA_MICD_ENA, ARIZONA_MICD_ENA,
143 &change);
144 if (!change) {
145 regulator_disable(info->micvdd);
146 pm_runtime_put_autosuspend(info->dev);
147 }
148}
149
150static void arizona_stop_mic(struct arizona_extcon_info *info)
151{
152 struct arizona *arizona = info->arizona;
153 bool change;
154
155 regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
156 ARIZONA_MICD_ENA, 0,
157 &change);
158
159 if (info->micd_reva) {
160 regmap_write(arizona->regmap, 0x80, 0x3);
161 regmap_write(arizona->regmap, 0x294, 2);
162 regmap_write(arizona->regmap, 0x80, 0x0);
163 }
164
165 if (change) {
166 regulator_disable(info->micvdd);
167 pm_runtime_mark_last_busy(info->dev);
168 pm_runtime_put_autosuspend(info->dev);
169 }
170}
171
4f340333
MB		 172static struct {
173 unsigned int factor_a;
174 unsigned int factor_b;
175} arizona_hpdet_b_ranges[] = {
176 { 5528, 362464 },
177 { 11084, 6186851 },
178 { 11065, 65460395 },
179};
180
181static struct {
182 int min;
183 int max;
184} arizona_hpdet_c_ranges[] = {
185 { 0, 30 },
186 { 8, 100 },
187 { 100, 1000 },
188 { 1000, 10000 },
189};
190
191static int arizona_hpdet_read(struct arizona_extcon_info *info)
192{
193 struct arizona *arizona = info->arizona;
194 unsigned int val, range;
195 int ret;
196
197 ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2, &val);
198 if (ret != 0) {
199 dev_err(arizona->dev, "Failed to read HPDET status: %d\n",
200 ret);
201 return ret;
202 }
203
204 switch (info->hpdet_ip) {
205 case 0:
206 if (!(val & ARIZONA_HP_DONE)) {
207 dev_err(arizona->dev, "HPDET did not complete: %x\n",
208 val);
e6dd8cf2 209 return -EAGAIN;
4f340333
MB		 210 }
211
212 val &= ARIZONA_HP_LVL_MASK;
213 break;
214
215 case 1:
216 if (!(val & ARIZONA_HP_DONE_B)) {
217 dev_err(arizona->dev, "HPDET did not complete: %x\n",
218 val);
e6dd8cf2 219 return -EAGAIN;
4f340333
MB		 220 }
221
222 ret = regmap_read(arizona->regmap, ARIZONA_HP_DACVAL, &val);
223 if (ret != 0) {
224 dev_err(arizona->dev, "Failed to read HP value: %d\n",
225 ret);
e6dd8cf2 226 return -EAGAIN;
4f340333
MB		 227 }
228
229 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
230 &range);
231 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
232 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
233
234 if (range < ARRAY_SIZE(arizona_hpdet_b_ranges) - 1 &&
235 (val < 100 || val > 0x3fb)) {
236 range++;
237 dev_dbg(arizona->dev, "Moving to HPDET range %d\n",
238 range);
239 regmap_update_bits(arizona->regmap,
240 ARIZONA_HEADPHONE_DETECT_1,
241 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
242 range <<
243 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
244 return -EAGAIN;
245 }
246
247 /* If we go out of range report top of range */
248 if (val < 100 || val > 0x3fb) {
249 dev_dbg(arizona->dev, "Measurement out of range\n");
250 return 10000;
251 }
252
253 dev_dbg(arizona->dev, "HPDET read %d in range %d\n",
254 val, range);
255
256 val = arizona_hpdet_b_ranges[range].factor_b
257 / ((val * 100) -
258 arizona_hpdet_b_ranges[range].factor_a);
259 break;
260
261 default:
262 dev_warn(arizona->dev, "Unknown HPDET IP revision %d\n",
263 info->hpdet_ip);
264 case 2:
265 if (!(val & ARIZONA_HP_DONE_B)) {
266 dev_err(arizona->dev, "HPDET did not complete: %x\n",
267 val);
e6dd8cf2 268 return -EAGAIN;
4f340333
MB		 269 }
270
271 val &= ARIZONA_HP_LVL_B_MASK;
272
273 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
274 &range);
275 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
276 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
277
278 /* Skip up or down a range? */
279 if (range && (val < arizona_hpdet_c_ranges[range].min)) {
280 range--;
281 dev_dbg(arizona->dev, "Moving to HPDET range %d-%d\n",
282 arizona_hpdet_c_ranges[range].min,
283 arizona_hpdet_c_ranges[range].max);
284 regmap_update_bits(arizona->regmap,
285 ARIZONA_HEADPHONE_DETECT_1,
286 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
287 range <<
288 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
289 return -EAGAIN;
290 }
291
292 if (range < ARRAY_SIZE(arizona_hpdet_c_ranges) - 1 &&
293 (val >= arizona_hpdet_c_ranges[range].max)) {
294 range++;
295 dev_dbg(arizona->dev, "Moving to HPDET range %d-%d\n",
296 arizona_hpdet_c_ranges[range].min,
297 arizona_hpdet_c_ranges[range].max);
298 regmap_update_bits(arizona->regmap,
299 ARIZONA_HEADPHONE_DETECT_1,
300 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
301 range <<
302 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
303 return -EAGAIN;
304 }
305 }
306
307 dev_dbg(arizona->dev, "HP impedance %d ohms\n", val);
308 return val;
309}
310
dd235eea
MB		 311static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading)
312{
313 struct arizona *arizona = info->arizona;
1eda6aa7 314 int id_gpio = arizona->pdata.hpdet_id_gpio;
dd235eea
MB		 315 int ret;
316
317 /*
318 * If we're using HPDET for accessory identification we need
319 * to take multiple measurements, step through them in sequence.
320 */
321 if (arizona->pdata.hpdet_acc_id) {
322 info->hpdet_res[info->num_hpdet_res++] = *reading;
323
324 /*
325 * If the impedence is too high don't measure the
326 * second ground.
327 */
328 if (info->num_hpdet_res == 1 && *reading >= 45) {
329 dev_dbg(arizona->dev, "Skipping ground flip\n");
330 info->hpdet_res[info->num_hpdet_res++] = *reading;
331 }
332
333 if (info->num_hpdet_res == 1) {
334 dev_dbg(arizona->dev, "Flipping ground\n");
335
336 regmap_update_bits(arizona->regmap,
337 ARIZONA_ACCESSORY_DETECT_MODE_1,
338 ARIZONA_ACCDET_SRC,
339 ~info->micd_modes[0].src);
1eda6aa7 340
dd235eea
MB		 341 regmap_update_bits(arizona->regmap,
342 ARIZONA_HEADPHONE_DETECT_1,
1eda6aa7
MB		 343 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
344 return -EAGAIN;
345 }
346
347 /* Only check the mic directly if we didn't already ID it */
348 if (id_gpio && info->num_hpdet_res == 2 &&
349 !((info->hpdet_res[0] > info->hpdet_res[1] * 2))) {
350 dev_dbg(arizona->dev, "Measuring mic\n");
351
352 regmap_update_bits(arizona->regmap,
353 ARIZONA_ACCESSORY_DETECT_MODE_1,
354 ARIZONA_ACCDET_MODE_MASK |
355 ARIZONA_ACCDET_SRC,
356 ARIZONA_ACCDET_MODE_HPR |
357 info->micd_modes[0].src);
358
359 gpio_set_value_cansleep(id_gpio, 1);
360
dd235eea
MB		 361 regmap_update_bits(arizona->regmap,
362 ARIZONA_HEADPHONE_DETECT_1,
363 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
364 return -EAGAIN;
365 }
366
367 /* OK, got both. Now, compare... */
1eda6aa7
MB		 368 dev_dbg(arizona->dev, "HPDET measured %d %d %d\n",
369 info->hpdet_res[0], info->hpdet_res[1],
370 info->hpdet_res[2]);
dd235eea 371
1eda6aa7
MB		 372 /*
373 * Either the two grounds measure differently or we
374 * measure the mic as high impedance.
375 */
376 if ((info->hpdet_res[0] > info->hpdet_res[1] * 2) ||
377 (id_gpio && info->hpdet_res[2] > 10)) {
dd235eea
MB		 378 dev_dbg(arizona->dev, "Detected mic\n");
379 info->mic = true;
380 ret = extcon_set_cable_state_(&info->edev,
381 ARIZONA_CABLE_MICROPHONE,
382 true);
383 if (ret != 0) {
384 dev_err(arizona->dev,
385 "Failed to report mic: %d\n", ret);
386 }
387
388 /* Take the headphone impedance for the main report */
389 *reading = info->hpdet_res[1];
390 } else {
391 dev_dbg(arizona->dev, "Detected headphone\n");
392 }
393
394 /* Make sure everything is reset back to the real polarity */
395 regmap_update_bits(arizona->regmap,
396 ARIZONA_ACCESSORY_DETECT_MODE_1,
397 ARIZONA_ACCDET_SRC,
398 info->micd_modes[0].src);
399 }
400
401 return 0;
402}
403
4f340333
MB		 404static irqreturn_t arizona_hpdet_irq(int irq, void *data)
405{
406 struct arizona_extcon_info *info = data;
407 struct arizona *arizona = info->arizona;
1eda6aa7 408 int id_gpio = arizona->pdata.hpdet_id_gpio;
4f340333 409 int report = ARIZONA_CABLE_HEADPHONE;
dd235eea 410 int ret, reading;
4f340333
MB		 411
412 mutex_lock(&info->lock);
413
414 /* If we got a spurious IRQ for some reason then ignore it */
415 if (!info->hpdet_active) {
416 dev_warn(arizona->dev, "Spurious HPDET IRQ\n");
417 mutex_unlock(&info->lock);
418 return IRQ_NONE;
419 }
420
421 /* If the cable was removed while measuring ignore the result */
422 ret = extcon_get_cable_state_(&info->edev, ARIZONA_CABLE_MECHANICAL);
423 if (ret < 0) {
424 dev_err(arizona->dev, "Failed to check cable state: %d\n",
425 ret);
426 goto out;
427 } else if (!ret) {
428 dev_dbg(arizona->dev, "Ignoring HPDET for removed cable\n");
429 goto done;
430 }
431
432 ret = arizona_hpdet_read(info);
433 if (ret == -EAGAIN) {
434 goto out;
435 } else if (ret < 0) {
436 goto done;
437 }
dd235eea 438 reading = ret;
4f340333
MB		 439
440 /* Reset back to starting range */
441 regmap_update_bits(arizona->regmap,
442 ARIZONA_HEADPHONE_DETECT_1,
dd235eea
MB		 443 ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
444 0);
445
446 ret = arizona_hpdet_do_id(info, &reading);
447 if (ret == -EAGAIN) {
448 goto out;
449 } else if (ret < 0) {
450 goto done;
451 }
4f340333
MB		 452
453 /* Report high impedence cables as line outputs */
dd235eea 454 if (reading >= 5000)
4f340333
MB		 455 report = ARIZONA_CABLE_LINEOUT;
456 else
457 report = ARIZONA_CABLE_HEADPHONE;
458
459 ret = extcon_set_cable_state_(&info->edev, report, true);
460 if (ret != 0)
461 dev_err(arizona->dev, "Failed to report HP/line: %d\n",
462 ret);
463
464 ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0);
465 if (ret != 0)
466 dev_warn(arizona->dev, "Failed to undo magic: %d\n", ret);
467
468 ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0);
469 if (ret != 0)
470 dev_warn(arizona->dev, "Failed to undo magic: %d\n", ret);
471
472done:
1eda6aa7
MB		 473 if (id_gpio)
474 gpio_set_value_cansleep(id_gpio, 0);
4f340333
MB		 475
476 /* Revert back to MICDET mode */
477 regmap_update_bits(arizona->regmap,
478 ARIZONA_ACCESSORY_DETECT_MODE_1,
479 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
480
481 /* If we have a mic then reenable MICDET */
482 if (info->mic)
483 arizona_start_mic(info);
484
485 if (info->hpdet_active) {
486 pm_runtime_put_autosuspend(info->dev);
487 info->hpdet_active = false;
488 }
489
490out:
491 mutex_unlock(&info->lock);
492
493 return IRQ_HANDLED;
494}
495
496static void arizona_identify_headphone(struct arizona_extcon_info *info)
497{
498 struct arizona *arizona = info->arizona;
499 int ret;
500
501 dev_dbg(arizona->dev, "Starting HPDET\n");
502
503 /* Make sure we keep the device enabled during the measurement */
504 pm_runtime_get(info->dev);
505
506 info->hpdet_active = true;
507
508 if (info->mic)
509 arizona_stop_mic(info);
510
511 ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0x4000);
512 if (ret != 0)
513 dev_warn(arizona->dev, "Failed to do magic: %d\n", ret);
514
515 ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0x4000);
516 if (ret != 0)
517 dev_warn(arizona->dev, "Failed to do magic: %d\n", ret);
518
519 ret = regmap_update_bits(arizona->regmap,
520 ARIZONA_ACCESSORY_DETECT_MODE_1,
521 ARIZONA_ACCDET_MODE_MASK,
522 ARIZONA_ACCDET_MODE_HPL);
523 if (ret != 0) {
524 dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
525 goto err;
526 }
527
528 ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
529 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
530 if (ret != 0) {
531 dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n",
532 ret);
533 goto err;
534 }
535
536 return;
537
538err:
539 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
540 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
541
542 /* Just report headphone */
543 ret = extcon_update_state(&info->edev,
544 1 << ARIZONA_CABLE_HEADPHONE,
545 1 << ARIZONA_CABLE_HEADPHONE);
546 if (ret != 0)
547 dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
548
549 if (info->mic)
550 arizona_start_mic(info);
551
552 info->hpdet_active = false;
553}
dd235eea
MB		 554
555static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
556{
557 struct arizona *arizona = info->arizona;
558 int ret;
559
560 dev_dbg(arizona->dev, "Starting identification via HPDET\n");
561
562 /* Make sure we keep the device enabled during the measurement */
563 pm_runtime_get(info->dev);
564
565 info->hpdet_active = true;
566
567 ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0x4000);
568 if (ret != 0)
569 dev_warn(arizona->dev, "Failed to do magic: %d\n", ret);
570
571 ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0x4000);
572 if (ret != 0)
573 dev_warn(arizona->dev, "Failed to do magic: %d\n", ret);
574
575 ret = regmap_update_bits(arizona->regmap,
576 ARIZONA_ACCESSORY_DETECT_MODE_1,
577 ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
578 info->micd_modes[0].src |
579 ARIZONA_ACCDET_MODE_HPL);
580 if (ret != 0) {
581 dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
582 goto err;
583 }
584
585 ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
586 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
587 if (ret != 0) {
588 dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n",
589 ret);
590 goto err;
4f340333
MB		 591 }
592
dd235eea
MB		 593 return;
594
595err:
596 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
597 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
598
599 /* Just report headphone */
600 ret = extcon_update_state(&info->edev,
601 1 << ARIZONA_CABLE_HEADPHONE,
602 1 << ARIZONA_CABLE_HEADPHONE);
603 if (ret != 0)
604 dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
605
4f340333
MB		 606 info->hpdet_active = false;
607}
608
f2c32a88
MB		 609static irqreturn_t arizona_micdet(int irq, void *data)
610{
611 struct arizona_extcon_info *info = data;
612 struct arizona *arizona = info->arizona;
34efe4dc
MB		 613 unsigned int val, lvl;
614 int ret, i;
f2c32a88
MB		 615
616 mutex_lock(&info->lock);
617
618 ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
619 if (ret != 0) {
620 dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret);
be31cc0b 621 mutex_unlock(&info->lock);
f2c32a88
MB		 622 return IRQ_NONE;
623 }
624
625 dev_dbg(arizona->dev, "MICDET: %x\n", val);
626
627 if (!(val & ARIZONA_MICD_VALID)) {
628 dev_warn(arizona->dev, "Microphone detection state invalid\n");
629 mutex_unlock(&info->lock);
630 return IRQ_NONE;
631 }
632
633 /* Due to jack detect this should never happen */
634 if (!(val & ARIZONA_MICD_STS)) {
635 dev_warn(arizona->dev, "Detected open circuit\n");
636 info->detecting = false;
637 goto handled;
638 }
639
640 /* If we got a high impedence we should have a headset, report it. */
641 if (info->detecting && (val & 0x400)) {
4f340333
MB		 642 arizona_identify_headphone(info);
643
325c6423 644 ret = extcon_update_state(&info->edev,
4f340333
MB		 645 1 << ARIZONA_CABLE_MICROPHONE,
646 1 << ARIZONA_CABLE_MICROPHONE);
f2c32a88
MB		 647
648 if (ret != 0)
649 dev_err(arizona->dev, "Headset report failed: %d\n",
650 ret);
651
652 info->mic = true;
653 info->detecting = false;
654 goto handled;
655 }
656
657 /* If we detected a lower impedence during initial startup
658 * then we probably have the wrong polarity, flip it. Don't
659 * do this for the lowest impedences to speed up detection of
660 * plain headphones. If both polarities report a low
661 * impedence then give up and report headphones.
662 */
663 if (info->detecting && (val & 0x3f8)) {
664 info->jack_flips++;
665
666 if (info->jack_flips >= info->micd_num_modes) {
4f340333
MB		 667 dev_dbg(arizona->dev, "Detected HP/line\n");
668 arizona_identify_headphone(info);
669
f2c32a88 670 info->detecting = false;
9ef2224d 671
4f340333 672 arizona_stop_mic(info);
f2c32a88
MB		 673 } else {
674 info->micd_mode++;
675 if (info->micd_mode == info->micd_num_modes)
676 info->micd_mode = 0;
677 arizona_extcon_set_mode(info, info->micd_mode);
678
679 info->jack_flips++;
680 }
681
682 goto handled;
683 }
684
685 /*
686 * If we're still detecting and we detect a short then we've
34efe4dc 687 * got a headphone. Otherwise it's a button press.
f2c32a88
MB		 688 */
689 if (val & 0x3fc) {
690 if (info->mic) {
691 dev_dbg(arizona->dev, "Mic button detected\n");
692
34efe4dc
MB		 693 lvl = val & ARIZONA_MICD_LVL_MASK;
694 lvl >>= ARIZONA_MICD_LVL_SHIFT;
695
696 for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
697 if (lvl & arizona_lvl_to_key[i].status)
698 input_report_key(info->input,
699 arizona_lvl_to_key[i].report,
700 1);
701 input_sync(info->input);
702
f2c32a88
MB		 703 } else if (info->detecting) {
704 dev_dbg(arizona->dev, "Headphone detected\n");
705 info->detecting = false;
706 arizona_stop_mic(info);
707
4f340333 708 arizona_identify_headphone(info);
f2c32a88
MB		 709 } else {
710 dev_warn(arizona->dev, "Button with no mic: %x\n",
711 val);
712 }
713 } else {
714 dev_dbg(arizona->dev, "Mic button released\n");
34efe4dc
MB		 715 for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
716 input_report_key(info->input,
717 arizona_lvl_to_key[i].report, 0);
718 input_sync(info->input);
f2c32a88
MB		 719 }
720
721handled:
722 pm_runtime_mark_last_busy(info->dev);
723 mutex_unlock(&info->lock);
724
725 return IRQ_HANDLED;
726}
727
728static irqreturn_t arizona_jackdet(int irq, void *data)
729{
730 struct arizona_extcon_info *info = data;
731 struct arizona *arizona = info->arizona;
92a49871 732 unsigned int val, present, mask;
34efe4dc 733 int ret, i;
f2c32a88
MB		 734
735 pm_runtime_get_sync(info->dev);
736
737 mutex_lock(&info->lock);
738
92a49871
MB		 739 if (arizona->pdata.jd_gpio5) {
740 mask = ARIZONA_MICD_CLAMP_STS;
741 present = 0;
742 } else {
743 mask = ARIZONA_JD1_STS;
744 present = ARIZONA_JD1_STS;
745 }
746
f2c32a88
MB		 747 ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
748 if (ret != 0) {
749 dev_err(arizona->dev, "Failed to read jackdet status: %d\n",
750 ret);
751 mutex_unlock(&info->lock);
752 pm_runtime_put_autosuspend(info->dev);
753 return IRQ_NONE;
754 }
755
92a49871 756 if ((val & mask) == present) {
f2c32a88 757 dev_dbg(arizona->dev, "Detected jack\n");
325c6423
MB		 758 ret = extcon_set_cable_state_(&info->edev,
759 ARIZONA_CABLE_MECHANICAL, true);
f2c32a88
MB		 760
761 if (ret != 0)
762 dev_err(arizona->dev, "Mechanical report failed: %d\n",
763 ret);
764
dd235eea
MB		 765 if (!arizona->pdata.hpdet_acc_id) {
766 info->detecting = true;
767 info->mic = false;
768 info->jack_flips = 0;
769
770 arizona_start_mic(info);
771 } else {
772 arizona_start_hpdet_acc_id(info);
773 }
4e616877
MB		 774
775 regmap_update_bits(arizona->regmap,
776 ARIZONA_JACK_DETECT_DEBOUNCE,
777 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB, 0);
f2c32a88
MB		 778 } else {
779 dev_dbg(arizona->dev, "Detected jack removal\n");
780
781 arizona_stop_mic(info);
782
dd235eea
MB		 783 info->num_hpdet_res = 0;
784 for (i = 0; i < ARRAY_SIZE(info->hpdet_res); i++)
785 info->hpdet_res[i] = 0;
786 info->mic = false;
92a49871 787
34efe4dc
MB		 788 for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
789 input_report_key(info->input,
790 arizona_lvl_to_key[i].report, 0);
791 input_sync(info->input);
792
f2c32a88
MB		 793 ret = extcon_update_state(&info->edev, 0xffffffff, 0);
794 if (ret != 0)
795 dev_err(arizona->dev, "Removal report failed: %d\n",
796 ret);
4e616877
MB		 797
798 regmap_update_bits(arizona->regmap,
799 ARIZONA_JACK_DETECT_DEBOUNCE,
800 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB,
801 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB);
f2c32a88
MB		 802 }
803
804 mutex_unlock(&info->lock);
805
806 pm_runtime_mark_last_busy(info->dev);
807 pm_runtime_put_autosuspend(info->dev);
808
809 return IRQ_HANDLED;
810}
811
44f34fd4 812static int arizona_extcon_probe(struct platform_device *pdev)
f2c32a88
MB		 813{
814 struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
815 struct arizona_pdata *pdata;
816 struct arizona_extcon_info *info;
92a49871 817 int jack_irq_fall, jack_irq_rise;
34efe4dc 818 int ret, mode, i;
f2c32a88
MB		 819
820 pdata = dev_get_platdata(arizona->dev);
821
822 info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
823 if (!info) {
8e5f5018 824 dev_err(&pdev->dev, "Failed to allocate memory\n");
f2c32a88
MB		 825 ret = -ENOMEM;
826 goto err;
827 }
828
829 info->micvdd = devm_regulator_get(arizona->dev, "MICVDD");
830 if (IS_ERR(info->micvdd)) {
831 ret = PTR_ERR(info->micvdd);
832 dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
833 goto err;
834 }
835
836 mutex_init(&info->lock);
837 info->arizona = arizona;
838 info->dev = &pdev->dev;
f2c32a88
MB		 839 platform_set_drvdata(pdev, info);
840
841 switch (arizona->type) {
842 case WM5102:
843 switch (arizona->rev) {
844 case 0:
845 info->micd_reva = true;
846 break;
847 default:
dab63eb2 848 info->micd_clamp = true;
4f340333 849 info->hpdet_ip = 1;
f2c32a88
MB		 850 break;
851 }
852 break;
853 default:
854 break;
855 }
856
857 info->edev.name = "Headset Jack";
858 info->edev.supported_cable = arizona_cable;
f2c32a88
MB		 859
860 ret = extcon_dev_register(&info->edev, arizona->dev);
861 if (ret < 0) {
8e5f5018 862 dev_err(arizona->dev, "extcon_dev_register() failed: %d\n",
f2c32a88
MB		 863 ret);
864 goto err;
865 }
866
867 if (pdata->num_micd_configs) {
868 info->micd_modes = pdata->micd_configs;
869 info->micd_num_modes = pdata->num_micd_configs;
870 } else {
871 info->micd_modes = micd_default_modes;
872 info->micd_num_modes = ARRAY_SIZE(micd_default_modes);
873 }
874
875 if (arizona->pdata.micd_pol_gpio > 0) {
876 if (info->micd_modes[0].gpio)
877 mode = GPIOF_OUT_INIT_HIGH;
878 else
879 mode = GPIOF_OUT_INIT_LOW;
880
881 ret = devm_gpio_request_one(&pdev->dev,
882 arizona->pdata.micd_pol_gpio,
883 mode,
884 "MICD polarity");
885 if (ret != 0) {
886 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
887 arizona->pdata.micd_pol_gpio, ret);
888 goto err_register;
889 }
890 }
891
1eda6aa7
MB		 892 if (arizona->pdata.hpdet_id_gpio > 0) {
893 ret = devm_gpio_request_one(&pdev->dev,
894 arizona->pdata.hpdet_id_gpio,
895 GPIOF_OUT_INIT_LOW,
896 "HPDET");
897 if (ret != 0) {
898 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
899 arizona->pdata.hpdet_id_gpio, ret);
900 goto err_register;
901 }
902 }
903
b17e5462
MB		 904 if (arizona->pdata.micd_bias_start_time)
905 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
906 ARIZONA_MICD_BIAS_STARTTIME_MASK,
907 arizona->pdata.micd_bias_start_time
908 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT);
909
2e033db5
MB		 910 if (arizona->pdata.micd_rate)
911 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
912 ARIZONA_MICD_RATE_MASK,
913 arizona->pdata.micd_rate
914 << ARIZONA_MICD_RATE_SHIFT);
915
916 if (arizona->pdata.micd_dbtime)
917 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
918 ARIZONA_MICD_DBTIME_MASK,
919 arizona->pdata.micd_dbtime
920 << ARIZONA_MICD_DBTIME_SHIFT);
921
dab63eb2 922 /*
92a49871
MB		 923 * If we have a clamp use it, activating in conjunction with
924 * GPIO5 if that is connected for jack detect operation.
dab63eb2
MB		 925 */
926 if (info->micd_clamp) {
92a49871
MB		 927 if (arizona->pdata.jd_gpio5) {
928 /* Put the GPIO into input mode */
929 regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL,
930 0xc101);
931
932 regmap_update_bits(arizona->regmap,
933 ARIZONA_MICD_CLAMP_CONTROL,
934 ARIZONA_MICD_CLAMP_MODE_MASK, 0x9);
935 } else {
936 regmap_update_bits(arizona->regmap,
937 ARIZONA_MICD_CLAMP_CONTROL,
938 ARIZONA_MICD_CLAMP_MODE_MASK, 0x4);
939 }
940
dab63eb2
MB		 941 regmap_update_bits(arizona->regmap,
942 ARIZONA_JACK_DETECT_DEBOUNCE,
943 ARIZONA_MICD_CLAMP_DB,
944 ARIZONA_MICD_CLAMP_DB);
945 }
946
f2c32a88
MB		 947 arizona_extcon_set_mode(info, 0);
948
3d44ea1c 949 info->input = devm_input_allocate_device(&pdev->dev);
34efe4dc
MB		 950 if (!info->input) {
951 dev_err(arizona->dev, "Can't allocate input dev\n");
952 ret = -ENOMEM;
953 goto err_register;
954 }
955
956 for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
957 input_set_capability(info->input, EV_KEY,
958 arizona_lvl_to_key[i].report);
959 info->input->name = "Headset";
960 info->input->phys = "arizona/extcon";
961 info->input->dev.parent = &pdev->dev;
962
f2c32a88
MB		 963 pm_runtime_enable(&pdev->dev);
964 pm_runtime_idle(&pdev->dev);
965 pm_runtime_get_sync(&pdev->dev);
966
92a49871
MB		 967 if (arizona->pdata.jd_gpio5) {
968 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
969 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
970 } else {
971 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
972 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
973 }
974
975 ret = arizona_request_irq(arizona, jack_irq_rise,
f2c32a88
MB		 976 "JACKDET rise", arizona_jackdet, info);
977 if (ret != 0) {
978 dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
979 ret);
34efe4dc 980 goto err_input;
f2c32a88
MB		 981 }
982
92a49871 983 ret = arizona_set_irq_wake(arizona, jack_irq_rise, 1);
f2c32a88
MB		 984 if (ret != 0) {
985 dev_err(&pdev->dev, "Failed to set JD rise IRQ wake: %d\n",
986 ret);
987 goto err_rise;
988 }
989
92a49871 990 ret = arizona_request_irq(arizona, jack_irq_fall,
f2c32a88
MB		 991 "JACKDET fall", arizona_jackdet, info);
992 if (ret != 0) {
993 dev_err(&pdev->dev, "Failed to get JD fall IRQ: %d\n", ret);
994 goto err_rise_wake;
995 }
996
92a49871 997 ret = arizona_set_irq_wake(arizona, jack_irq_fall, 1);
f2c32a88
MB		 998 if (ret != 0) {
999 dev_err(&pdev->dev, "Failed to set JD fall IRQ wake: %d\n",
1000 ret);
1001 goto err_fall;
1002 }
1003
1004 ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET,
1005 "MICDET", arizona_micdet, info);
1006 if (ret != 0) {
1007 dev_err(&pdev->dev, "Failed to get MICDET IRQ: %d\n", ret);
1008 goto err_fall_wake;
1009 }
1010
4f340333
MB		 1011 ret = arizona_request_irq(arizona, ARIZONA_IRQ_HPDET,
1012 "HPDET", arizona_hpdet_irq, info);
1013 if (ret != 0) {
1014 dev_err(&pdev->dev, "Failed to get HPDET IRQ: %d\n", ret);
1015 goto err_micdet;
1016 }
1017
f2c32a88
MB		 1018 arizona_clk32k_enable(arizona);
1019 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE,
1020 ARIZONA_JD1_DB, ARIZONA_JD1_DB);
1021 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1022 ARIZONA_JD1_ENA, ARIZONA_JD1_ENA);
1023
b8575a11
MB		 1024 ret = regulator_allow_bypass(info->micvdd, true);
1025 if (ret != 0)
1026 dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n",
1027 ret);
1028
f2c32a88
MB		 1029 pm_runtime_put(&pdev->dev);
1030
34efe4dc
MB		 1031 ret = input_register_device(info->input);
1032 if (ret) {
1033 dev_err(&pdev->dev, "Can't register input device: %d\n", ret);
4f340333 1034 goto err_hpdet;
34efe4dc
MB		 1035 }
1036
f2c32a88
MB		 1037 return 0;
1038
4f340333
MB		 1039err_hpdet:
1040 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
80732cc1
MB		 1041err_micdet:
1042 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
f2c32a88 1043err_fall_wake:
92a49871 1044 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
f2c32a88 1045err_fall:
92a49871 1046 arizona_free_irq(arizona, jack_irq_fall, info);
f2c32a88 1047err_rise_wake:
92a49871 1048 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
f2c32a88 1049err_rise:
92a49871 1050 arizona_free_irq(arizona, jack_irq_rise, info);
34efe4dc 1051err_input:
f2c32a88
MB		 1052err_register:
1053 pm_runtime_disable(&pdev->dev);
1054 extcon_dev_unregister(&info->edev);
1055err:
1056 return ret;
1057}
1058
93ed0327 1059static int arizona_extcon_remove(struct platform_device *pdev)
f2c32a88
MB		 1060{
1061 struct arizona_extcon_info *info = platform_get_drvdata(pdev);
1062 struct arizona *arizona = info->arizona;
92a49871 1063 int jack_irq_rise, jack_irq_fall;
f2c32a88
MB		 1064
1065 pm_runtime_disable(&pdev->dev);
1066
dab63eb2
MB		 1067 regmap_update_bits(arizona->regmap,
1068 ARIZONA_MICD_CLAMP_CONTROL,
1069 ARIZONA_MICD_CLAMP_MODE_MASK, 0);
1070
92a49871
MB		 1071 if (arizona->pdata.jd_gpio5) {
1072 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
1073 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
1074 } else {
1075 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
1076 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
1077 }
1078
1079 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1080 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1081 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
f2c32a88 1082 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
92a49871
MB		 1083 arizona_free_irq(arizona, jack_irq_rise, info);
1084 arizona_free_irq(arizona, jack_irq_fall, info);
f2c32a88
MB		 1085 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1086 ARIZONA_JD1_ENA, 0);
1087 arizona_clk32k_disable(arizona);
1088 extcon_dev_unregister(&info->edev);
1089
1090 return 0;
1091}
1092
1093static struct platform_driver arizona_extcon_driver = {
1094 .driver = {
1095 .name = "arizona-extcon",
1096 .owner = THIS_MODULE,
1097 },
1098 .probe = arizona_extcon_probe,
5f7e2228 1099 .remove = arizona_extcon_remove,
f2c32a88
MB		 1100};
1101
1102module_platform_driver(arizona_extcon_driver);
1103
1104MODULE_DESCRIPTION("Arizona Extcon driver");
1105MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1106MODULE_LICENSE("GPL");
1107MODULE_ALIAS("platform:extcon-arizona");
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