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-provider.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 ARIZONA_HPDET_WAIT_COUNT 15
55 #define ARIZONA_HPDET_WAIT_DELAY_MS 20
56
57 #define QUICK_HEADPHONE_MAX_OHM 3
58 #define MICROPHONE_MIN_OHM 1257
59 #define MICROPHONE_MAX_OHM 30000
60
61 #define MICD_DBTIME_TWO_READINGS 2
62 #define MICD_DBTIME_FOUR_READINGS 4
63
64 #define MICD_LVL_1_TO_7 (ARIZONA_MICD_LVL_1 | ARIZONA_MICD_LVL_2 | \
65 ARIZONA_MICD_LVL_3 | ARIZONA_MICD_LVL_4 | \
66 ARIZONA_MICD_LVL_5 | ARIZONA_MICD_LVL_6 | \
67 ARIZONA_MICD_LVL_7)
68
69 #define MICD_LVL_0_TO_7 (ARIZONA_MICD_LVL_0 | MICD_LVL_1_TO_7)
70
71 #define MICD_LVL_0_TO_8 (MICD_LVL_0_TO_7 | ARIZONA_MICD_LVL_8)
72
73 struct arizona_extcon_info {
74 struct device *dev;
75 struct arizona *arizona;
76 struct mutex lock;
77 struct regulator *micvdd;
78 struct input_dev *input;
79
80 u16 last_jackdet;
81
82 int micd_mode;
83 const struct arizona_micd_config *micd_modes;
84 int micd_num_modes;
85
86 const struct arizona_micd_range *micd_ranges;
87 int num_micd_ranges;
88
89 int micd_timeout;
90
91 bool micd_reva;
92 bool micd_clamp;
93
94 struct delayed_work hpdet_work;
95 struct delayed_work micd_detect_work;
96 struct delayed_work micd_timeout_work;
97
98 bool hpdet_active;
99 bool hpdet_done;
100 bool hpdet_retried;
101
102 int num_hpdet_res;
103 unsigned int hpdet_res[3];
104
105 bool mic;
106 bool detecting;
107 int jack_flips;
108
109 int hpdet_ip_version;
110
111 struct extcon_dev *edev;
112
113 struct gpio_desc *micd_pol_gpio;
114 };
115
116 static const struct arizona_micd_config micd_default_modes[] = {
117 { ARIZONA_ACCDET_SRC, 1, 0 },
118 { 0, 2, 1 },
119 };
120
121 static const struct arizona_micd_range micd_default_ranges[] = {
122 { .max = 11, .key = BTN_0 },
123 { .max = 28, .key = BTN_1 },
124 { .max = 54, .key = BTN_2 },
125 { .max = 100, .key = BTN_3 },
126 { .max = 186, .key = BTN_4 },
127 { .max = 430, .key = BTN_5 },
128 };
129
130 /* The number of levels in arizona_micd_levels valid for button thresholds */
131 #define ARIZONA_NUM_MICD_BUTTON_LEVELS 64
132
133 static const int arizona_micd_levels[] = {
134 3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46,
135 49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100,
136 105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245,
137 270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071,
138 1257, 30000,
139 };
140
141 static const unsigned int arizona_cable[] = {
142 EXTCON_MECHANICAL,
143 EXTCON_JACK_MICROPHONE,
144 EXTCON_JACK_HEADPHONE,
145 EXTCON_JACK_LINE_OUT,
146 EXTCON_NONE,
147 };
148
149 static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info);
150
arizona_extcon_hp_clamp(struct arizona_extcon_info * info,bool clamp)151 static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
152 bool clamp)
153 {
154 struct arizona *arizona = info->arizona;
155 unsigned int mask = 0, val = 0;
156 unsigned int cap_sel = 0;
157 int ret;
158
159 switch (arizona->type) {
160 case WM8998:
161 case WM1814:
162 mask = 0;
163 break;
164 case WM5110:
165 case WM8280:
166 mask = ARIZONA_HP1L_SHRTO | ARIZONA_HP1L_FLWR |
167 ARIZONA_HP1L_SHRTI;
168 if (clamp) {
169 val = ARIZONA_HP1L_SHRTO;
170 cap_sel = ARIZONA_TST_CAP_CLAMP;
171 } else {
172 val = ARIZONA_HP1L_FLWR | ARIZONA_HP1L_SHRTI;
173 cap_sel = ARIZONA_TST_CAP_DEFAULT;
174 }
175
176 ret = regmap_update_bits(arizona->regmap,
177 ARIZONA_HP_TEST_CTRL_1,
178 ARIZONA_HP1_TST_CAP_SEL_MASK,
179 cap_sel);
180 if (ret != 0)
181 dev_warn(arizona->dev,
182 "Failed to set TST_CAP_SEL: %d\n", ret);
183 break;
184 default:
185 mask = ARIZONA_RMV_SHRT_HP1L;
186 if (clamp)
187 val = ARIZONA_RMV_SHRT_HP1L;
188 break;
189 }
190
191 snd_soc_dapm_mutex_lock(arizona->dapm);
192
193 arizona->hpdet_clamp = clamp;
194
195 /* Keep the HP output stages disabled while doing the clamp */
196 if (clamp) {
197 ret = regmap_update_bits(arizona->regmap,
198 ARIZONA_OUTPUT_ENABLES_1,
199 ARIZONA_OUT1L_ENA |
200 ARIZONA_OUT1R_ENA, 0);
201 if (ret != 0)
202 dev_warn(arizona->dev,
203 "Failed to disable headphone outputs: %d\n",
204 ret);
205 }
206
207 if (mask) {
208 ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1L,
209 mask, val);
210 if (ret != 0)
211 dev_warn(arizona->dev, "Failed to do clamp: %d\n",
212 ret);
213
214 ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1R,
215 mask, val);
216 if (ret != 0)
217 dev_warn(arizona->dev, "Failed to do clamp: %d\n",
218 ret);
219 }
220
221 /* Restore the desired state while not doing the clamp */
222 if (!clamp) {
223 ret = regmap_update_bits(arizona->regmap,
224 ARIZONA_OUTPUT_ENABLES_1,
225 ARIZONA_OUT1L_ENA |
226 ARIZONA_OUT1R_ENA, arizona->hp_ena);
227 if (ret != 0)
228 dev_warn(arizona->dev,
229 "Failed to restore headphone outputs: %d\n",
230 ret);
231 }
232
233 snd_soc_dapm_mutex_unlock(arizona->dapm);
234 }
235
arizona_extcon_set_mode(struct arizona_extcon_info * info,int mode)236 static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
237 {
238 struct arizona *arizona = info->arizona;
239
240 mode %= info->micd_num_modes;
241
242 gpiod_set_value_cansleep(info->micd_pol_gpio,
243 info->micd_modes[mode].gpio);
244
245 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
246 ARIZONA_MICD_BIAS_SRC_MASK,
247 info->micd_modes[mode].bias <<
248 ARIZONA_MICD_BIAS_SRC_SHIFT);
249 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
250 ARIZONA_ACCDET_SRC, info->micd_modes[mode].src);
251
252 info->micd_mode = mode;
253
254 dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode);
255 }
256
arizona_extcon_get_micbias(struct arizona_extcon_info * info)257 static const char *arizona_extcon_get_micbias(struct arizona_extcon_info *info)
258 {
259 switch (info->micd_modes[0].bias) {
260 case 1:
261 return "MICBIAS1";
262 case 2:
263 return "MICBIAS2";
264 case 3:
265 return "MICBIAS3";
266 default:
267 return "MICVDD";
268 }
269 }
270
arizona_extcon_pulse_micbias(struct arizona_extcon_info * info)271 static void arizona_extcon_pulse_micbias(struct arizona_extcon_info *info)
272 {
273 struct arizona *arizona = info->arizona;
274 const char *widget = arizona_extcon_get_micbias(info);
275 struct snd_soc_dapm_context *dapm = arizona->dapm;
276 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
277 int ret;
278
279 ret = snd_soc_component_force_enable_pin(component, 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_component_disable_pin(component, 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
arizona_start_mic(struct arizona_extcon_info * info)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
arizona_stop_mic(struct arizona_extcon_info * info)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 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
353 bool change;
354 int ret;
355
356 regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
357 ARIZONA_MICD_ENA, 0,
358 &change);
359
360 ret = snd_soc_component_disable_pin(component, widget);
361 if (ret != 0)
362 dev_warn(arizona->dev,
363 "Failed to disable %s: %d\n",
364 widget, ret);
365
366 snd_soc_dapm_sync(dapm);
367
368 if (info->micd_reva) {
369 regmap_write(arizona->regmap, 0x80, 0x3);
370 regmap_write(arizona->regmap, 0x294, 2);
371 regmap_write(arizona->regmap, 0x80, 0x0);
372 }
373
374 ret = regulator_allow_bypass(info->micvdd, true);
375 if (ret != 0) {
376 dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
377 ret);
378 }
379
380 if (change) {
381 regulator_disable(info->micvdd);
382 pm_runtime_mark_last_busy(info->dev);
383 pm_runtime_put_autosuspend(info->dev);
384 }
385 }
386
387 static struct {
388 unsigned int threshold;
389 unsigned int factor_a;
390 unsigned int factor_b;
391 } arizona_hpdet_b_ranges[] = {
392 { 100, 5528, 362464 },
393 { 169, 11084, 6186851 },
394 { 169, 11065, 65460395 },
395 };
396
397 #define ARIZONA_HPDET_B_RANGE_MAX 0x3fb
398
399 static struct {
400 int min;
401 int max;
402 } arizona_hpdet_c_ranges[] = {
403 { 0, 30 },
404 { 8, 100 },
405 { 100, 1000 },
406 { 1000, 10000 },
407 };
408
arizona_hpdet_read(struct arizona_extcon_info * info)409 static int arizona_hpdet_read(struct arizona_extcon_info *info)
410 {
411 struct arizona *arizona = info->arizona;
412 unsigned int val, range;
413 int ret;
414
415 ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2, &val);
416 if (ret != 0) {
417 dev_err(arizona->dev, "Failed to read HPDET status: %d\n",
418 ret);
419 return ret;
420 }
421
422 switch (info->hpdet_ip_version) {
423 case 0:
424 if (!(val & ARIZONA_HP_DONE)) {
425 dev_err(arizona->dev, "HPDET did not complete: %x\n",
426 val);
427 return -EAGAIN;
428 }
429
430 val &= ARIZONA_HP_LVL_MASK;
431 break;
432
433 case 1:
434 if (!(val & ARIZONA_HP_DONE_B)) {
435 dev_err(arizona->dev, "HPDET did not complete: %x\n",
436 val);
437 return -EAGAIN;
438 }
439
440 ret = regmap_read(arizona->regmap, ARIZONA_HP_DACVAL, &val);
441 if (ret != 0) {
442 dev_err(arizona->dev, "Failed to read HP value: %d\n",
443 ret);
444 return -EAGAIN;
445 }
446
447 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
448 &range);
449 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
450 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
451
452 if (range < ARRAY_SIZE(arizona_hpdet_b_ranges) - 1 &&
453 (val < arizona_hpdet_b_ranges[range].threshold ||
454 val >= ARIZONA_HPDET_B_RANGE_MAX)) {
455 range++;
456 dev_dbg(arizona->dev, "Moving to HPDET range %d\n",
457 range);
458 regmap_update_bits(arizona->regmap,
459 ARIZONA_HEADPHONE_DETECT_1,
460 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
461 range <<
462 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
463 return -EAGAIN;
464 }
465
466 /* If we go out of range report top of range */
467 if (val < arizona_hpdet_b_ranges[range].threshold ||
468 val >= ARIZONA_HPDET_B_RANGE_MAX) {
469 dev_dbg(arizona->dev, "Measurement out of range\n");
470 return ARIZONA_HPDET_MAX;
471 }
472
473 dev_dbg(arizona->dev, "HPDET read %d in range %d\n",
474 val, range);
475
476 val = arizona_hpdet_b_ranges[range].factor_b
477 / ((val * 100) -
478 arizona_hpdet_b_ranges[range].factor_a);
479 break;
480
481 case 2:
482 if (!(val & ARIZONA_HP_DONE_B)) {
483 dev_err(arizona->dev, "HPDET did not complete: %x\n",
484 val);
485 return -EAGAIN;
486 }
487
488 val &= ARIZONA_HP_LVL_B_MASK;
489 /* Convert to ohms, the value is in 0.5 ohm increments */
490 val /= 2;
491
492 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
493 &range);
494 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
495 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
496
497 /* Skip up a range, or report? */
498 if (range < ARRAY_SIZE(arizona_hpdet_c_ranges) - 1 &&
499 (val >= arizona_hpdet_c_ranges[range].max)) {
500 range++;
501 dev_dbg(arizona->dev, "Moving to HPDET range %d-%d\n",
502 arizona_hpdet_c_ranges[range].min,
503 arizona_hpdet_c_ranges[range].max);
504 regmap_update_bits(arizona->regmap,
505 ARIZONA_HEADPHONE_DETECT_1,
506 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
507 range <<
508 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
509 return -EAGAIN;
510 }
511
512 if (range && (val < arizona_hpdet_c_ranges[range].min)) {
513 dev_dbg(arizona->dev, "Reporting range boundary %d\n",
514 arizona_hpdet_c_ranges[range].min);
515 val = arizona_hpdet_c_ranges[range].min;
516 }
517 break;
518
519 default:
520 dev_warn(arizona->dev, "Unknown HPDET IP revision %d\n",
521 info->hpdet_ip_version);
522 return -EINVAL;
523 }
524
525 dev_dbg(arizona->dev, "HP impedance %d ohms\n", val);
526 return val;
527 }
528
arizona_hpdet_do_id(struct arizona_extcon_info * info,int * reading,bool * mic)529 static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading,
530 bool *mic)
531 {
532 struct arizona *arizona = info->arizona;
533 int id_gpio = arizona->pdata.hpdet_id_gpio;
534
535 /*
536 * If we're using HPDET for accessory identification we need
537 * to take multiple measurements, step through them in sequence.
538 */
539 if (arizona->pdata.hpdet_acc_id) {
540 info->hpdet_res[info->num_hpdet_res++] = *reading;
541
542 /* Only check the mic directly if we didn't already ID it */
543 if (id_gpio && info->num_hpdet_res == 1) {
544 dev_dbg(arizona->dev, "Measuring mic\n");
545
546 regmap_update_bits(arizona->regmap,
547 ARIZONA_ACCESSORY_DETECT_MODE_1,
548 ARIZONA_ACCDET_MODE_MASK |
549 ARIZONA_ACCDET_SRC,
550 ARIZONA_ACCDET_MODE_HPR |
551 info->micd_modes[0].src);
552
553 gpio_set_value_cansleep(id_gpio, 1);
554
555 regmap_update_bits(arizona->regmap,
556 ARIZONA_HEADPHONE_DETECT_1,
557 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
558 return -EAGAIN;
559 }
560
561 /* OK, got both. Now, compare... */
562 dev_dbg(arizona->dev, "HPDET measured %d %d\n",
563 info->hpdet_res[0], info->hpdet_res[1]);
564
565 /* Take the headphone impedance for the main report */
566 *reading = info->hpdet_res[0];
567
568 /* Sometimes we get false readings due to slow insert */
569 if (*reading >= ARIZONA_HPDET_MAX && !info->hpdet_retried) {
570 dev_dbg(arizona->dev, "Retrying high impedance\n");
571 info->num_hpdet_res = 0;
572 info->hpdet_retried = true;
573 arizona_start_hpdet_acc_id(info);
574 pm_runtime_put(info->dev);
575 return -EAGAIN;
576 }
577
578 /*
579 * If we measure the mic as high impedance
580 */
581 if (!id_gpio || info->hpdet_res[1] > 50) {
582 dev_dbg(arizona->dev, "Detected mic\n");
583 *mic = true;
584 info->detecting = true;
585 } else {
586 dev_dbg(arizona->dev, "Detected headphone\n");
587 }
588
589 /* Make sure everything is reset back to the real polarity */
590 regmap_update_bits(arizona->regmap,
591 ARIZONA_ACCESSORY_DETECT_MODE_1,
592 ARIZONA_ACCDET_SRC,
593 info->micd_modes[0].src);
594 }
595
596 return 0;
597 }
598
arizona_hpdet_irq(int irq,void * data)599 static irqreturn_t arizona_hpdet_irq(int irq, void *data)
600 {
601 struct arizona_extcon_info *info = data;
602 struct arizona *arizona = info->arizona;
603 int id_gpio = arizona->pdata.hpdet_id_gpio;
604 unsigned int report = EXTCON_JACK_HEADPHONE;
605 int ret, reading;
606 bool mic = false;
607
608 mutex_lock(&info->lock);
609
610 /* If we got a spurious IRQ for some reason then ignore it */
611 if (!info->hpdet_active) {
612 dev_warn(arizona->dev, "Spurious HPDET IRQ\n");
613 mutex_unlock(&info->lock);
614 return IRQ_NONE;
615 }
616
617 /* If the cable was removed while measuring ignore the result */
618 ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
619 if (ret < 0) {
620 dev_err(arizona->dev, "Failed to check cable state: %d\n",
621 ret);
622 goto out;
623 } else if (!ret) {
624 dev_dbg(arizona->dev, "Ignoring HPDET for removed cable\n");
625 goto done;
626 }
627
628 ret = arizona_hpdet_read(info);
629 if (ret == -EAGAIN)
630 goto out;
631 else if (ret < 0)
632 goto done;
633 reading = ret;
634
635 /* Reset back to starting range */
636 regmap_update_bits(arizona->regmap,
637 ARIZONA_HEADPHONE_DETECT_1,
638 ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
639 0);
640
641 ret = arizona_hpdet_do_id(info, &reading, &mic);
642 if (ret == -EAGAIN)
643 goto out;
644 else if (ret < 0)
645 goto done;
646
647 /* Report high impedence cables as line outputs */
648 if (reading >= 5000)
649 report = EXTCON_JACK_LINE_OUT;
650 else
651 report = EXTCON_JACK_HEADPHONE;
652
653 ret = extcon_set_state_sync(info->edev, report, true);
654 if (ret != 0)
655 dev_err(arizona->dev, "Failed to report HP/line: %d\n",
656 ret);
657
658 done:
659 /* Reset back to starting range */
660 regmap_update_bits(arizona->regmap,
661 ARIZONA_HEADPHONE_DETECT_1,
662 ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
663 0);
664
665 arizona_extcon_hp_clamp(info, false);
666
667 if (id_gpio)
668 gpio_set_value_cansleep(id_gpio, 0);
669
670 /* Revert back to MICDET mode */
671 regmap_update_bits(arizona->regmap,
672 ARIZONA_ACCESSORY_DETECT_MODE_1,
673 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
674
675 /* If we have a mic then reenable MICDET */
676 if (mic || info->mic)
677 arizona_start_mic(info);
678
679 if (info->hpdet_active) {
680 pm_runtime_put_autosuspend(info->dev);
681 info->hpdet_active = false;
682 }
683
684 info->hpdet_done = true;
685
686 out:
687 mutex_unlock(&info->lock);
688
689 return IRQ_HANDLED;
690 }
691
arizona_identify_headphone(struct arizona_extcon_info * info)692 static void arizona_identify_headphone(struct arizona_extcon_info *info)
693 {
694 struct arizona *arizona = info->arizona;
695 int ret;
696
697 if (info->hpdet_done)
698 return;
699
700 dev_dbg(arizona->dev, "Starting HPDET\n");
701
702 /* Make sure we keep the device enabled during the measurement */
703 pm_runtime_get(info->dev);
704
705 info->hpdet_active = true;
706
707 if (info->mic)
708 arizona_stop_mic(info);
709
710 arizona_extcon_hp_clamp(info, true);
711
712 ret = regmap_update_bits(arizona->regmap,
713 ARIZONA_ACCESSORY_DETECT_MODE_1,
714 ARIZONA_ACCDET_MODE_MASK,
715 arizona->pdata.hpdet_channel);
716 if (ret != 0) {
717 dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
718 goto err;
719 }
720
721 ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
722 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
723 if (ret != 0) {
724 dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n",
725 ret);
726 goto err;
727 }
728
729 return;
730
731 err:
732 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
733 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
734
735 /* Just report headphone */
736 ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
737 if (ret != 0)
738 dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
739
740 if (info->mic)
741 arizona_start_mic(info);
742
743 info->hpdet_active = false;
744 }
745
arizona_start_hpdet_acc_id(struct arizona_extcon_info * info)746 static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
747 {
748 struct arizona *arizona = info->arizona;
749 int hp_reading = 32;
750 bool mic;
751 int ret;
752
753 dev_dbg(arizona->dev, "Starting identification via HPDET\n");
754
755 /* Make sure we keep the device enabled during the measurement */
756 pm_runtime_get_sync(info->dev);
757
758 info->hpdet_active = true;
759
760 arizona_extcon_hp_clamp(info, true);
761
762 ret = regmap_update_bits(arizona->regmap,
763 ARIZONA_ACCESSORY_DETECT_MODE_1,
764 ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
765 info->micd_modes[0].src |
766 arizona->pdata.hpdet_channel);
767 if (ret != 0) {
768 dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
769 goto err;
770 }
771
772 if (arizona->pdata.hpdet_acc_id_line) {
773 ret = regmap_update_bits(arizona->regmap,
774 ARIZONA_HEADPHONE_DETECT_1,
775 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
776 if (ret != 0) {
777 dev_err(arizona->dev,
778 "Can't start HPDETL measurement: %d\n",
779 ret);
780 goto err;
781 }
782 } else {
783 arizona_hpdet_do_id(info, &hp_reading, &mic);
784 }
785
786 return;
787
788 err:
789 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
790 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
791
792 /* Just report headphone */
793 ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
794 if (ret != 0)
795 dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
796
797 info->hpdet_active = false;
798 }
799
arizona_micd_timeout_work(struct work_struct * work)800 static void arizona_micd_timeout_work(struct work_struct *work)
801 {
802 struct arizona_extcon_info *info = container_of(work,
803 struct arizona_extcon_info,
804 micd_timeout_work.work);
805
806 mutex_lock(&info->lock);
807
808 dev_dbg(info->arizona->dev, "MICD timed out, reporting HP\n");
809
810 info->detecting = false;
811
812 arizona_identify_headphone(info);
813
814 arizona_stop_mic(info);
815
816 mutex_unlock(&info->lock);
817 }
818
arizona_micd_detect(struct work_struct * work)819 static void arizona_micd_detect(struct work_struct *work)
820 {
821 struct arizona_extcon_info *info = container_of(work,
822 struct arizona_extcon_info,
823 micd_detect_work.work);
824 struct arizona *arizona = info->arizona;
825 unsigned int val = 0, lvl;
826 int ret, i, key;
827
828 cancel_delayed_work_sync(&info->micd_timeout_work);
829
830 mutex_lock(&info->lock);
831
832 /* If the cable was removed while measuring ignore the result */
833 ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
834 if (ret < 0) {
835 dev_err(arizona->dev, "Failed to check cable state: %d\n",
836 ret);
837 mutex_unlock(&info->lock);
838 return;
839 } else if (!ret) {
840 dev_dbg(arizona->dev, "Ignoring MICDET for removed cable\n");
841 mutex_unlock(&info->lock);
842 return;
843 }
844
845 if (info->detecting && arizona->pdata.micd_software_compare) {
846 /* Must disable MICD before we read the ADCVAL */
847 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
848 ARIZONA_MICD_ENA, 0);
849 ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_4, &val);
850 if (ret != 0) {
851 dev_err(arizona->dev,
852 "Failed to read MICDET_ADCVAL: %d\n",
853 ret);
854 mutex_unlock(&info->lock);
855 return;
856 }
857
858 dev_dbg(arizona->dev, "MICDET_ADCVAL: %x\n", val);
859
860 val &= ARIZONA_MICDET_ADCVAL_MASK;
861 if (val < ARRAY_SIZE(arizona_micd_levels))
862 val = arizona_micd_levels[val];
863 else
864 val = INT_MAX;
865
866 if (val <= QUICK_HEADPHONE_MAX_OHM)
867 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_0;
868 else if (val <= MICROPHONE_MIN_OHM)
869 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_1;
870 else if (val <= MICROPHONE_MAX_OHM)
871 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_8;
872 else
873 val = ARIZONA_MICD_LVL_8;
874 }
875
876 for (i = 0; i < 10 && !(val & MICD_LVL_0_TO_8); i++) {
877 ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
878 if (ret != 0) {
879 dev_err(arizona->dev,
880 "Failed to read MICDET: %d\n", ret);
881 mutex_unlock(&info->lock);
882 return;
883 }
884
885 dev_dbg(arizona->dev, "MICDET: %x\n", val);
886
887 if (!(val & ARIZONA_MICD_VALID)) {
888 dev_warn(arizona->dev,
889 "Microphone detection state invalid\n");
890 mutex_unlock(&info->lock);
891 return;
892 }
893 }
894
895 if (i == 10 && !(val & MICD_LVL_0_TO_8)) {
896 dev_err(arizona->dev, "Failed to get valid MICDET value\n");
897 mutex_unlock(&info->lock);
898 return;
899 }
900
901 /* Due to jack detect this should never happen */
902 if (!(val & ARIZONA_MICD_STS)) {
903 dev_warn(arizona->dev, "Detected open circuit\n");
904 info->mic = false;
905 arizona_stop_mic(info);
906 info->detecting = false;
907 arizona_identify_headphone(info);
908 goto handled;
909 }
910
911 /* If we got a high impedence we should have a headset, report it. */
912 if (info->detecting && (val & ARIZONA_MICD_LVL_8)) {
913 info->mic = true;
914 info->detecting = false;
915
916 arizona_identify_headphone(info);
917
918 ret = extcon_set_state_sync(info->edev,
919 EXTCON_JACK_MICROPHONE, true);
920 if (ret != 0)
921 dev_err(arizona->dev, "Headset report failed: %d\n",
922 ret);
923
924 /* Don't need to regulate for button detection */
925 ret = regulator_allow_bypass(info->micvdd, true);
926 if (ret != 0) {
927 dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
928 ret);
929 }
930
931 goto handled;
932 }
933
934 /* If we detected a lower impedence during initial startup
935 * then we probably have the wrong polarity, flip it. Don't
936 * do this for the lowest impedences to speed up detection of
937 * plain headphones. If both polarities report a low
938 * impedence then give up and report headphones.
939 */
940 if (info->detecting && (val & MICD_LVL_1_TO_7)) {
941 if (info->jack_flips >= info->micd_num_modes * 10) {
942 dev_dbg(arizona->dev, "Detected HP/line\n");
943
944 info->detecting = false;
945
946 arizona_identify_headphone(info);
947
948 arizona_stop_mic(info);
949 } else {
950 info->micd_mode++;
951 if (info->micd_mode == info->micd_num_modes)
952 info->micd_mode = 0;
953 arizona_extcon_set_mode(info, info->micd_mode);
954
955 info->jack_flips++;
956 }
957
958 goto handled;
959 }
960
961 /*
962 * If we're still detecting and we detect a short then we've
963 * got a headphone. Otherwise it's a button press.
964 */
965 if (val & MICD_LVL_0_TO_7) {
966 if (info->mic) {
967 dev_dbg(arizona->dev, "Mic button detected\n");
968
969 lvl = val & ARIZONA_MICD_LVL_MASK;
970 lvl >>= ARIZONA_MICD_LVL_SHIFT;
971
972 for (i = 0; i < info->num_micd_ranges; i++)
973 input_report_key(info->input,
974 info->micd_ranges[i].key, 0);
975
976 WARN_ON(!lvl);
977 WARN_ON(ffs(lvl) - 1 >= info->num_micd_ranges);
978 if (lvl && ffs(lvl) - 1 < info->num_micd_ranges) {
979 key = info->micd_ranges[ffs(lvl) - 1].key;
980 input_report_key(info->input, key, 1);
981 input_sync(info->input);
982 }
983
984 } else if (info->detecting) {
985 dev_dbg(arizona->dev, "Headphone detected\n");
986 info->detecting = false;
987 arizona_stop_mic(info);
988
989 arizona_identify_headphone(info);
990 } else {
991 dev_warn(arizona->dev, "Button with no mic: %x\n",
992 val);
993 }
994 } else {
995 dev_dbg(arizona->dev, "Mic button released\n");
996 for (i = 0; i < info->num_micd_ranges; i++)
997 input_report_key(info->input,
998 info->micd_ranges[i].key, 0);
999 input_sync(info->input);
1000 arizona_extcon_pulse_micbias(info);
1001 }
1002
1003 handled:
1004 if (info->detecting) {
1005 if (arizona->pdata.micd_software_compare)
1006 regmap_update_bits(arizona->regmap,
1007 ARIZONA_MIC_DETECT_1,
1008 ARIZONA_MICD_ENA,
1009 ARIZONA_MICD_ENA);
1010
1011 queue_delayed_work(system_power_efficient_wq,
1012 &info->micd_timeout_work,
1013 msecs_to_jiffies(info->micd_timeout));
1014 }
1015
1016 pm_runtime_mark_last_busy(info->dev);
1017 mutex_unlock(&info->lock);
1018 }
1019
arizona_micdet(int irq,void * data)1020 static irqreturn_t arizona_micdet(int irq, void *data)
1021 {
1022 struct arizona_extcon_info *info = data;
1023 struct arizona *arizona = info->arizona;
1024 int debounce = arizona->pdata.micd_detect_debounce;
1025
1026 cancel_delayed_work_sync(&info->micd_detect_work);
1027 cancel_delayed_work_sync(&info->micd_timeout_work);
1028
1029 mutex_lock(&info->lock);
1030 if (!info->detecting)
1031 debounce = 0;
1032 mutex_unlock(&info->lock);
1033
1034 if (debounce)
1035 queue_delayed_work(system_power_efficient_wq,
1036 &info->micd_detect_work,
1037 msecs_to_jiffies(debounce));
1038 else
1039 arizona_micd_detect(&info->micd_detect_work.work);
1040
1041 return IRQ_HANDLED;
1042 }
1043
arizona_hpdet_work(struct work_struct * work)1044 static void arizona_hpdet_work(struct work_struct *work)
1045 {
1046 struct arizona_extcon_info *info = container_of(work,
1047 struct arizona_extcon_info,
1048 hpdet_work.work);
1049
1050 mutex_lock(&info->lock);
1051 arizona_start_hpdet_acc_id(info);
1052 mutex_unlock(&info->lock);
1053 }
1054
arizona_hpdet_wait(struct arizona_extcon_info * info)1055 static int arizona_hpdet_wait(struct arizona_extcon_info *info)
1056 {
1057 struct arizona *arizona = info->arizona;
1058 unsigned int val;
1059 int i, ret;
1060
1061 for (i = 0; i < ARIZONA_HPDET_WAIT_COUNT; i++) {
1062 ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2,
1063 &val);
1064 if (ret) {
1065 dev_err(arizona->dev,
1066 "Failed to read HPDET state: %d\n", ret);
1067 return ret;
1068 }
1069
1070 switch (info->hpdet_ip_version) {
1071 case 0:
1072 if (val & ARIZONA_HP_DONE)
1073 return 0;
1074 break;
1075 default:
1076 if (val & ARIZONA_HP_DONE_B)
1077 return 0;
1078 break;
1079 }
1080
1081 msleep(ARIZONA_HPDET_WAIT_DELAY_MS);
1082 }
1083
1084 dev_warn(arizona->dev, "HPDET did not appear to complete\n");
1085
1086 return -ETIMEDOUT;
1087 }
1088
arizona_jackdet(int irq,void * data)1089 static irqreturn_t arizona_jackdet(int irq, void *data)
1090 {
1091 struct arizona_extcon_info *info = data;
1092 struct arizona *arizona = info->arizona;
1093 unsigned int val, present, mask;
1094 bool cancelled_hp, cancelled_mic;
1095 int ret, i;
1096
1097 cancelled_hp = cancel_delayed_work_sync(&info->hpdet_work);
1098 cancelled_mic = cancel_delayed_work_sync(&info->micd_timeout_work);
1099
1100 pm_runtime_get_sync(info->dev);
1101
1102 mutex_lock(&info->lock);
1103
1104 if (info->micd_clamp) {
1105 mask = ARIZONA_MICD_CLAMP_STS;
1106 present = 0;
1107 } else {
1108 mask = ARIZONA_JD1_STS;
1109 if (arizona->pdata.jd_invert)
1110 present = 0;
1111 else
1112 present = ARIZONA_JD1_STS;
1113 }
1114
1115 ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
1116 if (ret != 0) {
1117 dev_err(arizona->dev, "Failed to read jackdet status: %d\n",
1118 ret);
1119 mutex_unlock(&info->lock);
1120 pm_runtime_put_autosuspend(info->dev);
1121 return IRQ_NONE;
1122 }
1123
1124 val &= mask;
1125 if (val == info->last_jackdet) {
1126 dev_dbg(arizona->dev, "Suppressing duplicate JACKDET\n");
1127 if (cancelled_hp)
1128 queue_delayed_work(system_power_efficient_wq,
1129 &info->hpdet_work,
1130 msecs_to_jiffies(HPDET_DEBOUNCE));
1131
1132 if (cancelled_mic) {
1133 int micd_timeout = info->micd_timeout;
1134
1135 queue_delayed_work(system_power_efficient_wq,
1136 &info->micd_timeout_work,
1137 msecs_to_jiffies(micd_timeout));
1138 }
1139
1140 goto out;
1141 }
1142 info->last_jackdet = val;
1143
1144 if (info->last_jackdet == present) {
1145 dev_dbg(arizona->dev, "Detected jack\n");
1146 ret = extcon_set_state_sync(info->edev,
1147 EXTCON_MECHANICAL, true);
1148
1149 if (ret != 0)
1150 dev_err(arizona->dev, "Mechanical report failed: %d\n",
1151 ret);
1152
1153 if (!arizona->pdata.hpdet_acc_id) {
1154 info->detecting = true;
1155 info->mic = false;
1156 info->jack_flips = 0;
1157
1158 arizona_start_mic(info);
1159 } else {
1160 queue_delayed_work(system_power_efficient_wq,
1161 &info->hpdet_work,
1162 msecs_to_jiffies(HPDET_DEBOUNCE));
1163 }
1164
1165 if (info->micd_clamp || !arizona->pdata.jd_invert)
1166 regmap_update_bits(arizona->regmap,
1167 ARIZONA_JACK_DETECT_DEBOUNCE,
1168 ARIZONA_MICD_CLAMP_DB |
1169 ARIZONA_JD1_DB, 0);
1170 } else {
1171 dev_dbg(arizona->dev, "Detected jack removal\n");
1172
1173 arizona_stop_mic(info);
1174
1175 info->num_hpdet_res = 0;
1176 for (i = 0; i < ARRAY_SIZE(info->hpdet_res); i++)
1177 info->hpdet_res[i] = 0;
1178 info->mic = false;
1179 info->hpdet_done = false;
1180 info->hpdet_retried = false;
1181
1182 for (i = 0; i < info->num_micd_ranges; i++)
1183 input_report_key(info->input,
1184 info->micd_ranges[i].key, 0);
1185 input_sync(info->input);
1186
1187 for (i = 0; i < ARRAY_SIZE(arizona_cable) - 1; i++) {
1188 ret = extcon_set_state_sync(info->edev,
1189 arizona_cable[i], false);
1190 if (ret != 0)
1191 dev_err(arizona->dev,
1192 "Removal report failed: %d\n", ret);
1193 }
1194
1195 /*
1196 * If the jack was removed during a headphone detection we
1197 * need to wait for the headphone detection to finish, as
1198 * it can not be aborted. We don't want to be able to start
1199 * a new headphone detection from a fresh insert until this
1200 * one is finished.
1201 */
1202 arizona_hpdet_wait(info);
1203
1204 regmap_update_bits(arizona->regmap,
1205 ARIZONA_JACK_DETECT_DEBOUNCE,
1206 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB,
1207 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB);
1208 }
1209
1210 if (arizona->pdata.micd_timeout)
1211 info->micd_timeout = arizona->pdata.micd_timeout;
1212 else
1213 info->micd_timeout = DEFAULT_MICD_TIMEOUT;
1214
1215 out:
1216 /* Clear trig_sts to make sure DCVDD is not forced up */
1217 regmap_write(arizona->regmap, ARIZONA_AOD_WKUP_AND_TRIG,
1218 ARIZONA_MICD_CLAMP_FALL_TRIG_STS |
1219 ARIZONA_MICD_CLAMP_RISE_TRIG_STS |
1220 ARIZONA_JD1_FALL_TRIG_STS |
1221 ARIZONA_JD1_RISE_TRIG_STS);
1222
1223 mutex_unlock(&info->lock);
1224
1225 pm_runtime_mark_last_busy(info->dev);
1226 pm_runtime_put_autosuspend(info->dev);
1227
1228 return IRQ_HANDLED;
1229 }
1230
1231 /* Map a level onto a slot in the register bank */
arizona_micd_set_level(struct arizona * arizona,int index,unsigned int level)1232 static void arizona_micd_set_level(struct arizona *arizona, int index,
1233 unsigned int level)
1234 {
1235 int reg;
1236 unsigned int mask;
1237
1238 reg = ARIZONA_MIC_DETECT_LEVEL_4 - (index / 2);
1239
1240 if (!(index % 2)) {
1241 mask = 0x3f00;
1242 level <<= 8;
1243 } else {
1244 mask = 0x3f;
1245 }
1246
1247 /* Program the level itself */
1248 regmap_update_bits(arizona->regmap, reg, mask, level);
1249 }
1250
arizona_extcon_get_micd_configs(struct device * dev,struct arizona * arizona)1251 static int arizona_extcon_get_micd_configs(struct device *dev,
1252 struct arizona *arizona)
1253 {
1254 const char * const prop = "wlf,micd-configs";
1255 const int entries_per_config = 3;
1256 struct arizona_micd_config *micd_configs;
1257 int nconfs, ret;
1258 int i, j;
1259 u32 *vals;
1260
1261 nconfs = device_property_read_u32_array(arizona->dev, prop, NULL, 0);
1262 if (nconfs <= 0)
1263 return 0;
1264
1265 vals = kcalloc(nconfs, sizeof(u32), GFP_KERNEL);
1266 if (!vals)
1267 return -ENOMEM;
1268
1269 ret = device_property_read_u32_array(arizona->dev, prop, vals, nconfs);
1270 if (ret < 0)
1271 goto out;
1272
1273 nconfs /= entries_per_config;
1274 micd_configs = devm_kcalloc(dev, nconfs, sizeof(*micd_configs),
1275 GFP_KERNEL);
1276 if (!micd_configs) {
1277 ret = -ENOMEM;
1278 goto out;
1279 }
1280
1281 for (i = 0, j = 0; i < nconfs; ++i) {
1282 micd_configs[i].src = vals[j++] ? ARIZONA_ACCDET_SRC : 0;
1283 micd_configs[i].bias = vals[j++];
1284 micd_configs[i].gpio = vals[j++];
1285 }
1286
1287 arizona->pdata.micd_configs = micd_configs;
1288 arizona->pdata.num_micd_configs = nconfs;
1289
1290 out:
1291 kfree(vals);
1292 return ret;
1293 }
1294
arizona_extcon_device_get_pdata(struct device * dev,struct arizona * arizona)1295 static int arizona_extcon_device_get_pdata(struct device *dev,
1296 struct arizona *arizona)
1297 {
1298 struct arizona_pdata *pdata = &arizona->pdata;
1299 unsigned int val = ARIZONA_ACCDET_MODE_HPL;
1300 int ret;
1301
1302 device_property_read_u32(arizona->dev, "wlf,hpdet-channel", &val);
1303 switch (val) {
1304 case ARIZONA_ACCDET_MODE_HPL:
1305 case ARIZONA_ACCDET_MODE_HPR:
1306 pdata->hpdet_channel = val;
1307 break;
1308 default:
1309 dev_err(arizona->dev,
1310 "Wrong wlf,hpdet-channel DT value %d\n", val);
1311 pdata->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
1312 }
1313
1314 device_property_read_u32(arizona->dev, "wlf,micd-detect-debounce",
1315 &pdata->micd_detect_debounce);
1316
1317 device_property_read_u32(arizona->dev, "wlf,micd-bias-start-time",
1318 &pdata->micd_bias_start_time);
1319
1320 device_property_read_u32(arizona->dev, "wlf,micd-rate",
1321 &pdata->micd_rate);
1322
1323 device_property_read_u32(arizona->dev, "wlf,micd-dbtime",
1324 &pdata->micd_dbtime);
1325
1326 device_property_read_u32(arizona->dev, "wlf,micd-timeout-ms",
1327 &pdata->micd_timeout);
1328
1329 pdata->micd_force_micbias = device_property_read_bool(arizona->dev,
1330 "wlf,micd-force-micbias");
1331
1332 pdata->micd_software_compare = device_property_read_bool(arizona->dev,
1333 "wlf,micd-software-compare");
1334
1335 pdata->jd_invert = device_property_read_bool(arizona->dev,
1336 "wlf,jd-invert");
1337
1338 device_property_read_u32(arizona->dev, "wlf,gpsw", &pdata->gpsw);
1339
1340 pdata->jd_gpio5 = device_property_read_bool(arizona->dev,
1341 "wlf,use-jd2");
1342 pdata->jd_gpio5_nopull = device_property_read_bool(arizona->dev,
1343 "wlf,use-jd2-nopull");
1344
1345 ret = arizona_extcon_get_micd_configs(dev, arizona);
1346 if (ret < 0)
1347 dev_err(arizona->dev, "Failed to read micd configs: %d\n", ret);
1348
1349 return 0;
1350 }
1351
arizona_extcon_probe(struct platform_device * pdev)1352 static int arizona_extcon_probe(struct platform_device *pdev)
1353 {
1354 struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
1355 struct arizona_pdata *pdata = &arizona->pdata;
1356 struct arizona_extcon_info *info;
1357 unsigned int val;
1358 unsigned int clamp_mode;
1359 int jack_irq_fall, jack_irq_rise;
1360 int ret, mode, i, j;
1361
1362 if (!arizona->dapm || !arizona->dapm->card)
1363 return -EPROBE_DEFER;
1364
1365 info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
1366 if (!info)
1367 return -ENOMEM;
1368
1369 if (!dev_get_platdata(arizona->dev))
1370 arizona_extcon_device_get_pdata(&pdev->dev, arizona);
1371
1372 info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
1373 if (IS_ERR(info->micvdd)) {
1374 ret = PTR_ERR(info->micvdd);
1375 dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
1376 return ret;
1377 }
1378
1379 mutex_init(&info->lock);
1380 info->arizona = arizona;
1381 info->dev = &pdev->dev;
1382 info->last_jackdet = ~(ARIZONA_MICD_CLAMP_STS | ARIZONA_JD1_STS);
1383 INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work);
1384 INIT_DELAYED_WORK(&info->micd_detect_work, arizona_micd_detect);
1385 INIT_DELAYED_WORK(&info->micd_timeout_work, arizona_micd_timeout_work);
1386 platform_set_drvdata(pdev, info);
1387
1388 switch (arizona->type) {
1389 case WM5102:
1390 switch (arizona->rev) {
1391 case 0:
1392 info->micd_reva = true;
1393 break;
1394 default:
1395 info->micd_clamp = true;
1396 info->hpdet_ip_version = 1;
1397 break;
1398 }
1399 break;
1400 case WM5110:
1401 case WM8280:
1402 switch (arizona->rev) {
1403 case 0 ... 2:
1404 break;
1405 default:
1406 info->micd_clamp = true;
1407 info->hpdet_ip_version = 2;
1408 break;
1409 }
1410 break;
1411 case WM8998:
1412 case WM1814:
1413 info->micd_clamp = true;
1414 info->hpdet_ip_version = 2;
1415 break;
1416 default:
1417 break;
1418 }
1419
1420 info->edev = devm_extcon_dev_allocate(&pdev->dev, arizona_cable);
1421 if (IS_ERR(info->edev)) {
1422 dev_err(&pdev->dev, "failed to allocate extcon device\n");
1423 return -ENOMEM;
1424 }
1425
1426 ret = devm_extcon_dev_register(&pdev->dev, info->edev);
1427 if (ret < 0) {
1428 dev_err(arizona->dev, "extcon_dev_register() failed: %d\n",
1429 ret);
1430 return ret;
1431 }
1432
1433 info->input = devm_input_allocate_device(&pdev->dev);
1434 if (!info->input) {
1435 dev_err(arizona->dev, "Can't allocate input dev\n");
1436 ret = -ENOMEM;
1437 goto err_register;
1438 }
1439
1440 info->input->name = "Headset";
1441 info->input->phys = "arizona/extcon";
1442
1443 if (pdata->num_micd_configs) {
1444 info->micd_modes = pdata->micd_configs;
1445 info->micd_num_modes = pdata->num_micd_configs;
1446 } else {
1447 info->micd_modes = micd_default_modes;
1448 info->micd_num_modes = ARRAY_SIZE(micd_default_modes);
1449 }
1450
1451 if (arizona->pdata.gpsw > 0)
1452 regmap_update_bits(arizona->regmap, ARIZONA_GP_SWITCH_1,
1453 ARIZONA_SW1_MODE_MASK, arizona->pdata.gpsw);
1454
1455 if (pdata->micd_pol_gpio > 0) {
1456 if (info->micd_modes[0].gpio)
1457 mode = GPIOF_OUT_INIT_HIGH;
1458 else
1459 mode = GPIOF_OUT_INIT_LOW;
1460
1461 ret = devm_gpio_request_one(&pdev->dev, pdata->micd_pol_gpio,
1462 mode, "MICD polarity");
1463 if (ret != 0) {
1464 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
1465 pdata->micd_pol_gpio, ret);
1466 goto err_register;
1467 }
1468
1469 info->micd_pol_gpio = gpio_to_desc(pdata->micd_pol_gpio);
1470 } else {
1471 if (info->micd_modes[0].gpio)
1472 mode = GPIOD_OUT_HIGH;
1473 else
1474 mode = GPIOD_OUT_LOW;
1475
1476 /* We can't use devm here because we need to do the get
1477 * against the MFD device, as that is where the of_node
1478 * will reside, but if we devm against that the GPIO
1479 * will not be freed if the extcon driver is unloaded.
1480 */
1481 info->micd_pol_gpio = gpiod_get_optional(arizona->dev,
1482 "wlf,micd-pol",
1483 GPIOD_OUT_LOW);
1484 if (IS_ERR(info->micd_pol_gpio)) {
1485 ret = PTR_ERR(info->micd_pol_gpio);
1486 dev_err(arizona->dev,
1487 "Failed to get microphone polarity GPIO: %d\n",
1488 ret);
1489 goto err_register;
1490 }
1491 }
1492
1493 if (arizona->pdata.hpdet_id_gpio > 0) {
1494 ret = devm_gpio_request_one(&pdev->dev,
1495 arizona->pdata.hpdet_id_gpio,
1496 GPIOF_OUT_INIT_LOW,
1497 "HPDET");
1498 if (ret != 0) {
1499 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
1500 arizona->pdata.hpdet_id_gpio, ret);
1501 goto err_gpio;
1502 }
1503 }
1504
1505 if (arizona->pdata.micd_bias_start_time)
1506 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1507 ARIZONA_MICD_BIAS_STARTTIME_MASK,
1508 arizona->pdata.micd_bias_start_time
1509 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT);
1510
1511 if (arizona->pdata.micd_rate)
1512 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1513 ARIZONA_MICD_RATE_MASK,
1514 arizona->pdata.micd_rate
1515 << ARIZONA_MICD_RATE_SHIFT);
1516
1517 switch (arizona->pdata.micd_dbtime) {
1518 case MICD_DBTIME_FOUR_READINGS:
1519 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1520 ARIZONA_MICD_DBTIME_MASK,
1521 ARIZONA_MICD_DBTIME);
1522 break;
1523 case MICD_DBTIME_TWO_READINGS:
1524 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1525 ARIZONA_MICD_DBTIME_MASK, 0);
1526 break;
1527 default:
1528 break;
1529 }
1530
1531 BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) <
1532 ARIZONA_NUM_MICD_BUTTON_LEVELS);
1533
1534 if (arizona->pdata.num_micd_ranges) {
1535 info->micd_ranges = pdata->micd_ranges;
1536 info->num_micd_ranges = pdata->num_micd_ranges;
1537 } else {
1538 info->micd_ranges = micd_default_ranges;
1539 info->num_micd_ranges = ARRAY_SIZE(micd_default_ranges);
1540 }
1541
1542 if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_RANGE) {
1543 dev_err(arizona->dev, "Too many MICD ranges: %d\n",
1544 arizona->pdata.num_micd_ranges);
1545 }
1546
1547 if (info->num_micd_ranges > 1) {
1548 for (i = 1; i < info->num_micd_ranges; i++) {
1549 if (info->micd_ranges[i - 1].max >
1550 info->micd_ranges[i].max) {
1551 dev_err(arizona->dev,
1552 "MICD ranges must be sorted\n");
1553 ret = -EINVAL;
1554 goto err_gpio;
1555 }
1556 }
1557 }
1558
1559 /* Disable all buttons by default */
1560 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
1561 ARIZONA_MICD_LVL_SEL_MASK, 0x81);
1562
1563 /* Set up all the buttons the user specified */
1564 for (i = 0; i < info->num_micd_ranges; i++) {
1565 for (j = 0; j < ARIZONA_NUM_MICD_BUTTON_LEVELS; j++)
1566 if (arizona_micd_levels[j] >= info->micd_ranges[i].max)
1567 break;
1568
1569 if (j == ARIZONA_NUM_MICD_BUTTON_LEVELS) {
1570 dev_err(arizona->dev, "Unsupported MICD level %d\n",
1571 info->micd_ranges[i].max);
1572 ret = -EINVAL;
1573 goto err_gpio;
1574 }
1575
1576 dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n",
1577 arizona_micd_levels[j], i);
1578
1579 arizona_micd_set_level(arizona, i, j);
1580 input_set_capability(info->input, EV_KEY,
1581 info->micd_ranges[i].key);
1582
1583 /* Enable reporting of that range */
1584 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
1585 1 << i, 1 << i);
1586 }
1587
1588 /* Set all the remaining keys to a maximum */
1589 for (; i < ARIZONA_MAX_MICD_RANGE; i++)
1590 arizona_micd_set_level(arizona, i, 0x3f);
1591
1592 /*
1593 * If we have a clamp use it, activating in conjunction with
1594 * GPIO5 if that is connected for jack detect operation.
1595 */
1596 if (info->micd_clamp) {
1597 if (arizona->pdata.jd_gpio5) {
1598 /* Put the GPIO into input mode with optional pull */
1599 val = 0xc101;
1600 if (arizona->pdata.jd_gpio5_nopull)
1601 val &= ~ARIZONA_GPN_PU;
1602
1603 regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL,
1604 val);
1605
1606 if (arizona->pdata.jd_invert)
1607 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH_GP5H;
1608 else
1609 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL_GP5H;
1610 } else {
1611 if (arizona->pdata.jd_invert)
1612 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH;
1613 else
1614 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL;
1615 }
1616
1617 regmap_update_bits(arizona->regmap,
1618 ARIZONA_MICD_CLAMP_CONTROL,
1619 ARIZONA_MICD_CLAMP_MODE_MASK, clamp_mode);
1620
1621 regmap_update_bits(arizona->regmap,
1622 ARIZONA_JACK_DETECT_DEBOUNCE,
1623 ARIZONA_MICD_CLAMP_DB,
1624 ARIZONA_MICD_CLAMP_DB);
1625 }
1626
1627 arizona_extcon_set_mode(info, 0);
1628
1629 pm_runtime_enable(&pdev->dev);
1630 pm_runtime_idle(&pdev->dev);
1631 pm_runtime_get_sync(&pdev->dev);
1632
1633 if (info->micd_clamp) {
1634 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
1635 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
1636 } else {
1637 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
1638 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
1639 }
1640
1641 ret = arizona_request_irq(arizona, jack_irq_rise,
1642 "JACKDET rise", arizona_jackdet, info);
1643 if (ret != 0) {
1644 dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
1645 ret);
1646 goto err_gpio;
1647 }
1648
1649 ret = arizona_set_irq_wake(arizona, jack_irq_rise, 1);
1650 if (ret != 0) {
1651 dev_err(&pdev->dev, "Failed to set JD rise IRQ wake: %d\n",
1652 ret);
1653 goto err_rise;
1654 }
1655
1656 ret = arizona_request_irq(arizona, jack_irq_fall,
1657 "JACKDET fall", arizona_jackdet, info);
1658 if (ret != 0) {
1659 dev_err(&pdev->dev, "Failed to get JD fall IRQ: %d\n", ret);
1660 goto err_rise_wake;
1661 }
1662
1663 ret = arizona_set_irq_wake(arizona, jack_irq_fall, 1);
1664 if (ret != 0) {
1665 dev_err(&pdev->dev, "Failed to set JD fall IRQ wake: %d\n",
1666 ret);
1667 goto err_fall;
1668 }
1669
1670 ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET,
1671 "MICDET", arizona_micdet, info);
1672 if (ret != 0) {
1673 dev_err(&pdev->dev, "Failed to get MICDET IRQ: %d\n", ret);
1674 goto err_fall_wake;
1675 }
1676
1677 ret = arizona_request_irq(arizona, ARIZONA_IRQ_HPDET,
1678 "HPDET", arizona_hpdet_irq, info);
1679 if (ret != 0) {
1680 dev_err(&pdev->dev, "Failed to get HPDET IRQ: %d\n", ret);
1681 goto err_micdet;
1682 }
1683
1684 arizona_clk32k_enable(arizona);
1685 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE,
1686 ARIZONA_JD1_DB, ARIZONA_JD1_DB);
1687 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1688 ARIZONA_JD1_ENA, ARIZONA_JD1_ENA);
1689
1690 ret = regulator_allow_bypass(info->micvdd, true);
1691 if (ret != 0)
1692 dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n",
1693 ret);
1694
1695 pm_runtime_put(&pdev->dev);
1696
1697 ret = input_register_device(info->input);
1698 if (ret) {
1699 dev_err(&pdev->dev, "Can't register input device: %d\n", ret);
1700 goto err_hpdet;
1701 }
1702
1703 return 0;
1704
1705 err_hpdet:
1706 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
1707 err_micdet:
1708 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
1709 err_fall_wake:
1710 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1711 err_fall:
1712 arizona_free_irq(arizona, jack_irq_fall, info);
1713 err_rise_wake:
1714 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1715 err_rise:
1716 arizona_free_irq(arizona, jack_irq_rise, info);
1717 err_gpio:
1718 gpiod_put(info->micd_pol_gpio);
1719 err_register:
1720 pm_runtime_disable(&pdev->dev);
1721 return ret;
1722 }
1723
arizona_extcon_remove(struct platform_device * pdev)1724 static int arizona_extcon_remove(struct platform_device *pdev)
1725 {
1726 struct arizona_extcon_info *info = platform_get_drvdata(pdev);
1727 struct arizona *arizona = info->arizona;
1728 int jack_irq_rise, jack_irq_fall;
1729
1730 gpiod_put(info->micd_pol_gpio);
1731
1732 pm_runtime_disable(&pdev->dev);
1733
1734 regmap_update_bits(arizona->regmap,
1735 ARIZONA_MICD_CLAMP_CONTROL,
1736 ARIZONA_MICD_CLAMP_MODE_MASK, 0);
1737
1738 if (info->micd_clamp) {
1739 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
1740 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
1741 } else {
1742 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
1743 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
1744 }
1745
1746 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1747 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1748 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
1749 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
1750 arizona_free_irq(arizona, jack_irq_rise, info);
1751 arizona_free_irq(arizona, jack_irq_fall, info);
1752 cancel_delayed_work_sync(&info->hpdet_work);
1753 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1754 ARIZONA_JD1_ENA, 0);
1755 arizona_clk32k_disable(arizona);
1756
1757 return 0;
1758 }
1759
1760 static struct platform_driver arizona_extcon_driver = {
1761 .driver = {
1762 .name = "arizona-extcon",
1763 },
1764 .probe = arizona_extcon_probe,
1765 .remove = arizona_extcon_remove,
1766 };
1767
1768 module_platform_driver(arizona_extcon_driver);
1769
1770 MODULE_DESCRIPTION("Arizona Extcon driver");
1771 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1772 MODULE_LICENSE("GPL");
1773 MODULE_ALIAS("platform:extcon-arizona");
1774
