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