tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * extcon-arizona.c - Extcon driver Wolfson Arizona devices
4 *
5 * Copyright (C) 2012-2014 Wolfson Microelectronics plc
6 */
7
8#include <linux/kernel.h>
9#include <linux/module.h>
10#include <linux/i2c.h>
11#include <linux/slab.h>
12#include <linux/interrupt.h>
13#include <linux/err.h>
14#include <linux/gpio/consumer.h>
15#include <linux/gpio.h>
16#include <linux/input.h>
17#include <linux/platform_device.h>
18#include <linux/pm_runtime.h>
19#include <linux/property.h>
20#include <linux/regulator/consumer.h>
21#include <linux/extcon-provider.h>
22
23#include <sound/soc.h>
24
25#include <linux/mfd/arizona/core.h>
26#include <linux/mfd/arizona/pdata.h>
27#include <linux/mfd/arizona/registers.h>
28#include <dt-bindings/mfd/arizona.h>
29
30#define ARIZONA_MAX_MICD_RANGE 8
31
32#define ARIZONA_MICD_CLAMP_MODE_JDL 0x4
33#define ARIZONA_MICD_CLAMP_MODE_JDH 0x5
34#define ARIZONA_MICD_CLAMP_MODE_JDL_GP5H 0x9
35#define ARIZONA_MICD_CLAMP_MODE_JDH_GP5H 0xb
36
37#define ARIZONA_TST_CAP_DEFAULT 0x3
38#define ARIZONA_TST_CAP_CLAMP 0x1
39
40#define ARIZONA_HPDET_MAX 10000
41
42#define HPDET_DEBOUNCE 500
43#define DEFAULT_MICD_TIMEOUT 2000
44
45#define ARIZONA_HPDET_WAIT_COUNT 15
46#define ARIZONA_HPDET_WAIT_DELAY_MS 20
47
48#define QUICK_HEADPHONE_MAX_OHM 3
49#define MICROPHONE_MIN_OHM 1257
50#define MICROPHONE_MAX_OHM 30000
51
52#define MICD_DBTIME_TWO_READINGS 2
53#define MICD_DBTIME_FOUR_READINGS 4
54
55#define MICD_LVL_1_TO_7 (ARIZONA_MICD_LVL_1 | ARIZONA_MICD_LVL_2 | \
56 ARIZONA_MICD_LVL_3 | ARIZONA_MICD_LVL_4 | \
57 ARIZONA_MICD_LVL_5 | ARIZONA_MICD_LVL_6 | \
58 ARIZONA_MICD_LVL_7)
59
60#define MICD_LVL_0_TO_7 (ARIZONA_MICD_LVL_0 | MICD_LVL_1_TO_7)
61
62#define MICD_LVL_0_TO_8 (MICD_LVL_0_TO_7 | ARIZONA_MICD_LVL_8)
63
64struct arizona_extcon_info {
65 struct device *dev;
66 struct arizona *arizona;
67 struct mutex lock;
68 struct regulator *micvdd;
69 struct input_dev *input;
70
71 u16 last_jackdet;
72
73 int micd_mode;
74 const struct arizona_micd_config *micd_modes;
75 int micd_num_modes;
76
77 const struct arizona_micd_range *micd_ranges;
78 int num_micd_ranges;
79
80 int micd_timeout;
81
82 bool micd_reva;
83 bool micd_clamp;
84
85 struct delayed_work hpdet_work;
86 struct delayed_work micd_detect_work;
87 struct delayed_work micd_timeout_work;
88
89 bool hpdet_active;
90 bool hpdet_done;
91 bool hpdet_retried;
92
93 int num_hpdet_res;
94 unsigned int hpdet_res[3];
95
96 bool mic;
97 bool detecting;
98 int jack_flips;
99
100 int hpdet_ip_version;
101
102 struct extcon_dev *edev;
103
104 struct gpio_desc *micd_pol_gpio;
105};
106
107static const struct arizona_micd_config micd_default_modes[] = {
108 { ARIZONA_ACCDET_SRC, 1, 0 },
109 { 0, 2, 1 },
110};
111
112static const struct arizona_micd_range micd_default_ranges[] = {
113 { .max = 11, .key = BTN_0 },
114 { .max = 28, .key = BTN_1 },
115 { .max = 54, .key = BTN_2 },
116 { .max = 100, .key = BTN_3 },
117 { .max = 186, .key = BTN_4 },
118 { .max = 430, .key = BTN_5 },
119};
120
121/* The number of levels in arizona_micd_levels valid for button thresholds */
122#define ARIZONA_NUM_MICD_BUTTON_LEVELS 64
123
124static const int arizona_micd_levels[] = {
125 3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46,
126 49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100,
127 105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245,
128 270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071,
129 1257, 30000,
130};
131
132static const unsigned int arizona_cable[] = {
133 EXTCON_MECHANICAL,
134 EXTCON_JACK_MICROPHONE,
135 EXTCON_JACK_HEADPHONE,
136 EXTCON_JACK_LINE_OUT,
137 EXTCON_NONE,
138};
139
140static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info);
141
142static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
143 bool clamp)
144{
145 struct arizona *arizona = info->arizona;
146 unsigned int mask = 0, val = 0;
147 unsigned int cap_sel = 0;
148 int ret;
149
150 switch (arizona->type) {
151 case WM8998:
152 case WM1814:
153 mask = 0;
154 break;
155 case WM5110:
156 case WM8280:
157 mask = ARIZONA_HP1L_SHRTO | ARIZONA_HP1L_FLWR |
158 ARIZONA_HP1L_SHRTI;
159 if (clamp) {
160 val = ARIZONA_HP1L_SHRTO;
161 cap_sel = ARIZONA_TST_CAP_CLAMP;
162 } else {
163 val = ARIZONA_HP1L_FLWR | ARIZONA_HP1L_SHRTI;
164 cap_sel = ARIZONA_TST_CAP_DEFAULT;
165 }
166
167 ret = regmap_update_bits(arizona->regmap,
168 ARIZONA_HP_TEST_CTRL_1,
169 ARIZONA_HP1_TST_CAP_SEL_MASK,
170 cap_sel);
171 if (ret != 0)
172 dev_warn(arizona->dev,
173 "Failed to set TST_CAP_SEL: %d\n", ret);
174 break;
175 default:
176 mask = ARIZONA_RMV_SHRT_HP1L;
177 if (clamp)
178 val = ARIZONA_RMV_SHRT_HP1L;
179 break;
180 }
181
182 snd_soc_dapm_mutex_lock(arizona->dapm);
183
184 arizona->hpdet_clamp = clamp;
185
186 /* Keep the HP output stages disabled while doing the clamp */
187 if (clamp) {
188 ret = regmap_update_bits(arizona->regmap,
189 ARIZONA_OUTPUT_ENABLES_1,
190 ARIZONA_OUT1L_ENA |
191 ARIZONA_OUT1R_ENA, 0);
192 if (ret != 0)
193 dev_warn(arizona->dev,
194 "Failed to disable headphone outputs: %d\n",
195 ret);
196 }
197
198 if (mask) {
199 ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1L,
200 mask, val);
201 if (ret != 0)
202 dev_warn(arizona->dev, "Failed to do clamp: %d\n",
203 ret);
204
205 ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1R,
206 mask, val);
207 if (ret != 0)
208 dev_warn(arizona->dev, "Failed to do clamp: %d\n",
209 ret);
210 }
211
212 /* Restore the desired state while not doing the clamp */
213 if (!clamp) {
214 ret = regmap_update_bits(arizona->regmap,
215 ARIZONA_OUTPUT_ENABLES_1,
216 ARIZONA_OUT1L_ENA |
217 ARIZONA_OUT1R_ENA, arizona->hp_ena);
218 if (ret != 0)
219 dev_warn(arizona->dev,
220 "Failed to restore headphone outputs: %d\n",
221 ret);
222 }
223
224 snd_soc_dapm_mutex_unlock(arizona->dapm);
225}
226
227static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
228{
229 struct arizona *arizona = info->arizona;
230
231 mode %= info->micd_num_modes;
232
233 gpiod_set_value_cansleep(info->micd_pol_gpio,
234 info->micd_modes[mode].gpio);
235
236 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
237 ARIZONA_MICD_BIAS_SRC_MASK,
238 info->micd_modes[mode].bias <<
239 ARIZONA_MICD_BIAS_SRC_SHIFT);
240 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
241 ARIZONA_ACCDET_SRC, info->micd_modes[mode].src);
242
243 info->micd_mode = mode;
244
245 dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode);
246}
247
248static const char *arizona_extcon_get_micbias(struct arizona_extcon_info *info)
249{
250 switch (info->micd_modes[0].bias) {
251 case 1:
252 return "MICBIAS1";
253 case 2:
254 return "MICBIAS2";
255 case 3:
256 return "MICBIAS3";
257 default:
258 return "MICVDD";
259 }
260}
261
262static void arizona_extcon_pulse_micbias(struct arizona_extcon_info *info)
263{
264 struct arizona *arizona = info->arizona;
265 const char *widget = arizona_extcon_get_micbias(info);
266 struct snd_soc_dapm_context *dapm = arizona->dapm;
267 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
268 int ret;
269
270 ret = snd_soc_component_force_enable_pin(component, widget);
271 if (ret != 0)
272 dev_warn(arizona->dev, "Failed to enable %s: %d\n",
273 widget, ret);
274
275 snd_soc_dapm_sync(dapm);
276
277 if (!arizona->pdata.micd_force_micbias) {
278 ret = snd_soc_component_disable_pin(component, widget);
279 if (ret != 0)
280 dev_warn(arizona->dev, "Failed to disable %s: %d\n",
281 widget, ret);
282
283 snd_soc_dapm_sync(dapm);
284 }
285}
286
287static void arizona_start_mic(struct arizona_extcon_info *info)
288{
289 struct arizona *arizona = info->arizona;
290 bool change;
291 int ret;
292 unsigned int mode;
293
294 /* Microphone detection can't use idle mode */
295 pm_runtime_get(info->dev);
296
297 if (info->detecting) {
298 ret = regulator_allow_bypass(info->micvdd, false);
299 if (ret != 0) {
300 dev_err(arizona->dev,
301 "Failed to regulate MICVDD: %d\n",
302 ret);
303 }
304 }
305
306 ret = regulator_enable(info->micvdd);
307 if (ret != 0) {
308 dev_err(arizona->dev, "Failed to enable MICVDD: %d\n",
309 ret);
310 }
311
312 if (info->micd_reva) {
313 regmap_write(arizona->regmap, 0x80, 0x3);
314 regmap_write(arizona->regmap, 0x294, 0);
315 regmap_write(arizona->regmap, 0x80, 0x0);
316 }
317
318 if (info->detecting && arizona->pdata.micd_software_compare)
319 mode = ARIZONA_ACCDET_MODE_ADC;
320 else
321 mode = ARIZONA_ACCDET_MODE_MIC;
322
323 regmap_update_bits(arizona->regmap,
324 ARIZONA_ACCESSORY_DETECT_MODE_1,
325 ARIZONA_ACCDET_MODE_MASK, mode);
326
327 arizona_extcon_pulse_micbias(info);
328
329 ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
330 ARIZONA_MICD_ENA, ARIZONA_MICD_ENA,
331 &change);
332 if (ret < 0) {
333 dev_err(arizona->dev, "Failed to enable micd: %d\n", ret);
334 } else if (!change) {
335 regulator_disable(info->micvdd);
336 pm_runtime_put_autosuspend(info->dev);
337 }
338}
339
340static void arizona_stop_mic(struct arizona_extcon_info *info)
341{
342 struct arizona *arizona = info->arizona;
343 const char *widget = arizona_extcon_get_micbias(info);
344 struct snd_soc_dapm_context *dapm = arizona->dapm;
345 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
346 bool change = false;
347 int ret;
348
349 ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
350 ARIZONA_MICD_ENA, 0,
351 &change);
352 if (ret < 0)
353 dev_err(arizona->dev, "Failed to disable micd: %d\n", ret);
354
355 ret = snd_soc_component_disable_pin(component, widget);
356 if (ret != 0)
357 dev_warn(arizona->dev,
358 "Failed to disable %s: %d\n",
359 widget, ret);
360
361 snd_soc_dapm_sync(dapm);
362
363 if (info->micd_reva) {
364 regmap_write(arizona->regmap, 0x80, 0x3);
365 regmap_write(arizona->regmap, 0x294, 2);
366 regmap_write(arizona->regmap, 0x80, 0x0);
367 }
368
369 ret = regulator_allow_bypass(info->micvdd, true);
370 if (ret != 0) {
371 dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
372 ret);
373 }
374
375 if (change) {
376 regulator_disable(info->micvdd);
377 pm_runtime_mark_last_busy(info->dev);
378 pm_runtime_put_autosuspend(info->dev);
379 }
380}
381
382static struct {
383 unsigned int threshold;
384 unsigned int factor_a;
385 unsigned int factor_b;
386} arizona_hpdet_b_ranges[] = {
387 { 100, 5528, 362464 },
388 { 169, 11084, 6186851 },
389 { 169, 11065, 65460395 },
390};
391
392#define ARIZONA_HPDET_B_RANGE_MAX 0x3fb
393
394static struct {
395 int min;
396 int max;
397} arizona_hpdet_c_ranges[] = {
398 { 0, 30 },
399 { 8, 100 },
400 { 100, 1000 },
401 { 1000, 10000 },
402};
403
404static int arizona_hpdet_read(struct arizona_extcon_info *info)
405{
406 struct arizona *arizona = info->arizona;
407 unsigned int val, range;
408 int ret;
409
410 ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2, &val);
411 if (ret != 0) {
412 dev_err(arizona->dev, "Failed to read HPDET status: %d\n",
413 ret);
414 return ret;
415 }
416
417 switch (info->hpdet_ip_version) {
418 case 0:
419 if (!(val & ARIZONA_HP_DONE)) {
420 dev_err(arizona->dev, "HPDET did not complete: %x\n",
421 val);
422 return -EAGAIN;
423 }
424
425 val &= ARIZONA_HP_LVL_MASK;
426 break;
427
428 case 1:
429 if (!(val & ARIZONA_HP_DONE_B)) {
430 dev_err(arizona->dev, "HPDET did not complete: %x\n",
431 val);
432 return -EAGAIN;
433 }
434
435 ret = regmap_read(arizona->regmap, ARIZONA_HP_DACVAL, &val);
436 if (ret != 0) {
437 dev_err(arizona->dev, "Failed to read HP value: %d\n",
438 ret);
439 return -EAGAIN;
440 }
441
442 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
443 &range);
444 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
445 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
446
447 if (range < ARRAY_SIZE(arizona_hpdet_b_ranges) - 1 &&
448 (val < arizona_hpdet_b_ranges[range].threshold ||
449 val >= ARIZONA_HPDET_B_RANGE_MAX)) {
450 range++;
451 dev_dbg(arizona->dev, "Moving to HPDET range %d\n",
452 range);
453 regmap_update_bits(arizona->regmap,
454 ARIZONA_HEADPHONE_DETECT_1,
455 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
456 range <<
457 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
458 return -EAGAIN;
459 }
460
461 /* If we go out of range report top of range */
462 if (val < arizona_hpdet_b_ranges[range].threshold ||
463 val >= ARIZONA_HPDET_B_RANGE_MAX) {
464 dev_dbg(arizona->dev, "Measurement out of range\n");
465 return ARIZONA_HPDET_MAX;
466 }
467
468 dev_dbg(arizona->dev, "HPDET read %d in range %d\n",
469 val, range);
470
471 val = arizona_hpdet_b_ranges[range].factor_b
472 / ((val * 100) -
473 arizona_hpdet_b_ranges[range].factor_a);
474 break;
475
476 case 2:
477 if (!(val & ARIZONA_HP_DONE_B)) {
478 dev_err(arizona->dev, "HPDET did not complete: %x\n",
479 val);
480 return -EAGAIN;
481 }
482
483 val &= ARIZONA_HP_LVL_B_MASK;
484 /* Convert to ohms, the value is in 0.5 ohm increments */
485 val /= 2;
486
487 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
488 &range);
489 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
490 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
491
492 /* Skip up a range, or report? */
493 if (range < ARRAY_SIZE(arizona_hpdet_c_ranges) - 1 &&
494 (val >= arizona_hpdet_c_ranges[range].max)) {
495 range++;
496 dev_dbg(arizona->dev, "Moving to HPDET range %d-%d\n",
497 arizona_hpdet_c_ranges[range].min,
498 arizona_hpdet_c_ranges[range].max);
499 regmap_update_bits(arizona->regmap,
500 ARIZONA_HEADPHONE_DETECT_1,
501 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
502 range <<
503 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
504 return -EAGAIN;
505 }
506
507 if (range && (val < arizona_hpdet_c_ranges[range].min)) {
508 dev_dbg(arizona->dev, "Reporting range boundary %d\n",
509 arizona_hpdet_c_ranges[range].min);
510 val = arizona_hpdet_c_ranges[range].min;
511 }
512 break;
513
514 default:
515 dev_warn(arizona->dev, "Unknown HPDET IP revision %d\n",
516 info->hpdet_ip_version);
517 return -EINVAL;
518 }
519
520 dev_dbg(arizona->dev, "HP impedance %d ohms\n", val);
521 return val;
522}
523
524static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading,
525 bool *mic)
526{
527 struct arizona *arizona = info->arizona;
528 int id_gpio = arizona->pdata.hpdet_id_gpio;
529
530 /*
531 * If we're using HPDET for accessory identification we need
532 * to take multiple measurements, step through them in sequence.
533 */
534 if (arizona->pdata.hpdet_acc_id) {
535 info->hpdet_res[info->num_hpdet_res++] = *reading;
536
537 /* Only check the mic directly if we didn't already ID it */
538 if (id_gpio && info->num_hpdet_res == 1) {
539 dev_dbg(arizona->dev, "Measuring mic\n");
540
541 regmap_update_bits(arizona->regmap,
542 ARIZONA_ACCESSORY_DETECT_MODE_1,
543 ARIZONA_ACCDET_MODE_MASK |
544 ARIZONA_ACCDET_SRC,
545 ARIZONA_ACCDET_MODE_HPR |
546 info->micd_modes[0].src);
547
548 gpio_set_value_cansleep(id_gpio, 1);
549
550 regmap_update_bits(arizona->regmap,
551 ARIZONA_HEADPHONE_DETECT_1,
552 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
553 return -EAGAIN;
554 }
555
556 /* OK, got both. Now, compare... */
557 dev_dbg(arizona->dev, "HPDET measured %d %d\n",
558 info->hpdet_res[0], info->hpdet_res[1]);
559
560 /* Take the headphone impedance for the main report */
561 *reading = info->hpdet_res[0];
562
563 /* Sometimes we get false readings due to slow insert */
564 if (*reading >= ARIZONA_HPDET_MAX && !info->hpdet_retried) {
565 dev_dbg(arizona->dev, "Retrying high impedance\n");
566 info->num_hpdet_res = 0;
567 info->hpdet_retried = true;
568 arizona_start_hpdet_acc_id(info);
569 pm_runtime_put(info->dev);
570 return -EAGAIN;
571 }
572
573 /*
574 * If we measure the mic as high impedance
575 */
576 if (!id_gpio || info->hpdet_res[1] > 50) {
577 dev_dbg(arizona->dev, "Detected mic\n");
578 *mic = true;
579 info->detecting = true;
580 } else {
581 dev_dbg(arizona->dev, "Detected headphone\n");
582 }
583
584 /* Make sure everything is reset back to the real polarity */
585 regmap_update_bits(arizona->regmap,
586 ARIZONA_ACCESSORY_DETECT_MODE_1,
587 ARIZONA_ACCDET_SRC,
588 info->micd_modes[0].src);
589 }
590
591 return 0;
592}
593
594static irqreturn_t arizona_hpdet_irq(int irq, void *data)
595{
596 struct arizona_extcon_info *info = data;
597 struct arizona *arizona = info->arizona;
598 int id_gpio = arizona->pdata.hpdet_id_gpio;
599 unsigned int report = EXTCON_JACK_HEADPHONE;
600 int ret, reading;
601 bool mic = false;
602
603 mutex_lock(&info->lock);
604
605 /* If we got a spurious IRQ for some reason then ignore it */
606 if (!info->hpdet_active) {
607 dev_warn(arizona->dev, "Spurious HPDET IRQ\n");
608 mutex_unlock(&info->lock);
609 return IRQ_NONE;
610 }
611
612 /* If the cable was removed while measuring ignore the result */
613 ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
614 if (ret < 0) {
615 dev_err(arizona->dev, "Failed to check cable state: %d\n",
616 ret);
617 goto out;
618 } else if (!ret) {
619 dev_dbg(arizona->dev, "Ignoring HPDET for removed cable\n");
620 goto done;
621 }
622
623 ret = arizona_hpdet_read(info);
624 if (ret == -EAGAIN)
625 goto out;
626 else if (ret < 0)
627 goto done;
628 reading = ret;
629
630 /* Reset back to starting range */
631 regmap_update_bits(arizona->regmap,
632 ARIZONA_HEADPHONE_DETECT_1,
633 ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
634 0);
635
636 ret = arizona_hpdet_do_id(info, &reading, &mic);
637 if (ret == -EAGAIN)
638 goto out;
639 else if (ret < 0)
640 goto done;
641
642 /* Report high impedence cables as line outputs */
643 if (reading >= 5000)
644 report = EXTCON_JACK_LINE_OUT;
645 else
646 report = EXTCON_JACK_HEADPHONE;
647
648 ret = extcon_set_state_sync(info->edev, report, true);
649 if (ret != 0)
650 dev_err(arizona->dev, "Failed to report HP/line: %d\n",
651 ret);
652
653done:
654 /* Reset back to starting range */
655 regmap_update_bits(arizona->regmap,
656 ARIZONA_HEADPHONE_DETECT_1,
657 ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
658 0);
659
660 arizona_extcon_hp_clamp(info, false);
661
662 if (id_gpio)
663 gpio_set_value_cansleep(id_gpio, 0);
664
665 /* Revert back to MICDET mode */
666 regmap_update_bits(arizona->regmap,
667 ARIZONA_ACCESSORY_DETECT_MODE_1,
668 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
669
670 /* If we have a mic then reenable MICDET */
671 if (mic || info->mic)
672 arizona_start_mic(info);
673
674 if (info->hpdet_active) {
675 pm_runtime_put_autosuspend(info->dev);
676 info->hpdet_active = false;
677 }
678
679 info->hpdet_done = true;
680
681out:
682 mutex_unlock(&info->lock);
683
684 return IRQ_HANDLED;
685}
686
687static void arizona_identify_headphone(struct arizona_extcon_info *info)
688{
689 struct arizona *arizona = info->arizona;
690 int ret;
691
692 if (info->hpdet_done)
693 return;
694
695 dev_dbg(arizona->dev, "Starting HPDET\n");
696
697 /* Make sure we keep the device enabled during the measurement */
698 pm_runtime_get(info->dev);
699
700 info->hpdet_active = true;
701
702 if (info->mic)
703 arizona_stop_mic(info);
704
705 arizona_extcon_hp_clamp(info, true);
706
707 ret = regmap_update_bits(arizona->regmap,
708 ARIZONA_ACCESSORY_DETECT_MODE_1,
709 ARIZONA_ACCDET_MODE_MASK,
710 arizona->pdata.hpdet_channel);
711 if (ret != 0) {
712 dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
713 goto err;
714 }
715
716 ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
717 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
718 if (ret != 0) {
719 dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n",
720 ret);
721 goto err;
722 }
723
724 return;
725
726err:
727 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
728 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
729
730 /* Just report headphone */
731 ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
732 if (ret != 0)
733 dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
734
735 if (info->mic)
736 arizona_start_mic(info);
737
738 info->hpdet_active = false;
739}
740
741static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
742{
743 struct arizona *arizona = info->arizona;
744 int hp_reading = 32;
745 bool mic;
746 int ret;
747
748 dev_dbg(arizona->dev, "Starting identification via HPDET\n");
749
750 /* Make sure we keep the device enabled during the measurement */
751 pm_runtime_get_sync(info->dev);
752
753 info->hpdet_active = true;
754
755 arizona_extcon_hp_clamp(info, true);
756
757 ret = regmap_update_bits(arizona->regmap,
758 ARIZONA_ACCESSORY_DETECT_MODE_1,
759 ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
760 info->micd_modes[0].src |
761 arizona->pdata.hpdet_channel);
762 if (ret != 0) {
763 dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
764 goto err;
765 }
766
767 if (arizona->pdata.hpdet_acc_id_line) {
768 ret = regmap_update_bits(arizona->regmap,
769 ARIZONA_HEADPHONE_DETECT_1,
770 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
771 if (ret != 0) {
772 dev_err(arizona->dev,
773 "Can't start HPDETL measurement: %d\n",
774 ret);
775 goto err;
776 }
777 } else {
778 arizona_hpdet_do_id(info, &hp_reading, &mic);
779 }
780
781 return;
782
783err:
784 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
785 ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
786
787 /* Just report headphone */
788 ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
789 if (ret != 0)
790 dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
791
792 info->hpdet_active = false;
793}
794
795static void arizona_micd_timeout_work(struct work_struct *work)
796{
797 struct arizona_extcon_info *info = container_of(work,
798 struct arizona_extcon_info,
799 micd_timeout_work.work);
800
801 mutex_lock(&info->lock);
802
803 dev_dbg(info->arizona->dev, "MICD timed out, reporting HP\n");
804
805 info->detecting = false;
806
807 arizona_identify_headphone(info);
808
809 arizona_stop_mic(info);
810
811 mutex_unlock(&info->lock);
812}
813
814static void arizona_micd_detect(struct work_struct *work)
815{
816 struct arizona_extcon_info *info = container_of(work,
817 struct arizona_extcon_info,
818 micd_detect_work.work);
819 struct arizona *arizona = info->arizona;
820 unsigned int val = 0, lvl;
821 int ret, i, key;
822
823 cancel_delayed_work_sync(&info->micd_timeout_work);
824
825 mutex_lock(&info->lock);
826
827 /* If the cable was removed while measuring ignore the result */
828 ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
829 if (ret < 0) {
830 dev_err(arizona->dev, "Failed to check cable state: %d\n",
831 ret);
832 mutex_unlock(&info->lock);
833 return;
834 } else if (!ret) {
835 dev_dbg(arizona->dev, "Ignoring MICDET for removed cable\n");
836 mutex_unlock(&info->lock);
837 return;
838 }
839
840 if (info->detecting && arizona->pdata.micd_software_compare) {
841 /* Must disable MICD before we read the ADCVAL */
842 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
843 ARIZONA_MICD_ENA, 0);
844 ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_4, &val);
845 if (ret != 0) {
846 dev_err(arizona->dev,
847 "Failed to read MICDET_ADCVAL: %d\n",
848 ret);
849 mutex_unlock(&info->lock);
850 return;
851 }
852
853 dev_dbg(arizona->dev, "MICDET_ADCVAL: %x\n", val);
854
855 val &= ARIZONA_MICDET_ADCVAL_MASK;
856 if (val < ARRAY_SIZE(arizona_micd_levels))
857 val = arizona_micd_levels[val];
858 else
859 val = INT_MAX;
860
861 if (val <= QUICK_HEADPHONE_MAX_OHM)
862 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_0;
863 else if (val <= MICROPHONE_MIN_OHM)
864 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_1;
865 else if (val <= MICROPHONE_MAX_OHM)
866 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_8;
867 else
868 val = ARIZONA_MICD_LVL_8;
869 }
870
871 for (i = 0; i < 10 && !(val & MICD_LVL_0_TO_8); i++) {
872 ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
873 if (ret != 0) {
874 dev_err(arizona->dev,
875 "Failed to read MICDET: %d\n", ret);
876 mutex_unlock(&info->lock);
877 return;
878 }
879
880 dev_dbg(arizona->dev, "MICDET: %x\n", val);
881
882 if (!(val & ARIZONA_MICD_VALID)) {
883 dev_warn(arizona->dev,
884 "Microphone detection state invalid\n");
885 mutex_unlock(&info->lock);
886 return;
887 }
888 }
889
890 if (i == 10 && !(val & MICD_LVL_0_TO_8)) {
891 dev_err(arizona->dev, "Failed to get valid MICDET value\n");
892 mutex_unlock(&info->lock);
893 return;
894 }
895
896 /* Due to jack detect this should never happen */
897 if (!(val & ARIZONA_MICD_STS)) {
898 dev_warn(arizona->dev, "Detected open circuit\n");
899 info->mic = false;
900 arizona_stop_mic(info);
901 info->detecting = false;
902 arizona_identify_headphone(info);
903 goto handled;
904 }
905
906 /* If we got a high impedence we should have a headset, report it. */
907 if (info->detecting && (val & ARIZONA_MICD_LVL_8)) {
908 info->mic = true;
909 info->detecting = false;
910
911 arizona_identify_headphone(info);
912
913 ret = extcon_set_state_sync(info->edev,
914 EXTCON_JACK_MICROPHONE, true);
915 if (ret != 0)
916 dev_err(arizona->dev, "Headset report failed: %d\n",
917 ret);
918
919 /* Don't need to regulate for button detection */
920 ret = regulator_allow_bypass(info->micvdd, true);
921 if (ret != 0) {
922 dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
923 ret);
924 }
925
926 goto handled;
927 }
928
929 /* If we detected a lower impedence during initial startup
930 * then we probably have the wrong polarity, flip it. Don't
931 * do this for the lowest impedences to speed up detection of
932 * plain headphones. If both polarities report a low
933 * impedence then give up and report headphones.
934 */
935 if (info->detecting && (val & MICD_LVL_1_TO_7)) {
936 if (info->jack_flips >= info->micd_num_modes * 10) {
937 dev_dbg(arizona->dev, "Detected HP/line\n");
938
939 info->detecting = false;
940
941 arizona_identify_headphone(info);
942
943 arizona_stop_mic(info);
944 } else {
945 info->micd_mode++;
946 if (info->micd_mode == info->micd_num_modes)
947 info->micd_mode = 0;
948 arizona_extcon_set_mode(info, info->micd_mode);
949
950 info->jack_flips++;
951 }
952
953 goto handled;
954 }
955
956 /*
957 * If we're still detecting and we detect a short then we've
958 * got a headphone. Otherwise it's a button press.
959 */
960 if (val & MICD_LVL_0_TO_7) {
961 if (info->mic) {
962 dev_dbg(arizona->dev, "Mic button detected\n");
963
964 lvl = val & ARIZONA_MICD_LVL_MASK;
965 lvl >>= ARIZONA_MICD_LVL_SHIFT;
966
967 for (i = 0; i < info->num_micd_ranges; i++)
968 input_report_key(info->input,
969 info->micd_ranges[i].key, 0);
970
971 WARN_ON(!lvl);
972 WARN_ON(ffs(lvl) - 1 >= info->num_micd_ranges);
973 if (lvl && ffs(lvl) - 1 < info->num_micd_ranges) {
974 key = info->micd_ranges[ffs(lvl) - 1].key;
975 input_report_key(info->input, key, 1);
976 input_sync(info->input);
977 }
978
979 } else if (info->detecting) {
980 dev_dbg(arizona->dev, "Headphone detected\n");
981 info->detecting = false;
982 arizona_stop_mic(info);
983
984 arizona_identify_headphone(info);
985 } else {
986 dev_warn(arizona->dev, "Button with no mic: %x\n",
987 val);
988 }
989 } else {
990 dev_dbg(arizona->dev, "Mic button released\n");
991 for (i = 0; i < info->num_micd_ranges; i++)
992 input_report_key(info->input,
993 info->micd_ranges[i].key, 0);
994 input_sync(info->input);
995 arizona_extcon_pulse_micbias(info);
996 }
997
998handled:
999 if (info->detecting) {
1000 if (arizona->pdata.micd_software_compare)
1001 regmap_update_bits(arizona->regmap,
1002 ARIZONA_MIC_DETECT_1,
1003 ARIZONA_MICD_ENA,
1004 ARIZONA_MICD_ENA);
1005
1006 queue_delayed_work(system_power_efficient_wq,
1007 &info->micd_timeout_work,
1008 msecs_to_jiffies(info->micd_timeout));
1009 }
1010
1011 pm_runtime_mark_last_busy(info->dev);
1012 mutex_unlock(&info->lock);
1013}
1014
1015static irqreturn_t arizona_micdet(int irq, void *data)
1016{
1017 struct arizona_extcon_info *info = data;
1018 struct arizona *arizona = info->arizona;
1019 int debounce = arizona->pdata.micd_detect_debounce;
1020
1021 cancel_delayed_work_sync(&info->micd_detect_work);
1022 cancel_delayed_work_sync(&info->micd_timeout_work);
1023
1024 mutex_lock(&info->lock);
1025 if (!info->detecting)
1026 debounce = 0;
1027 mutex_unlock(&info->lock);
1028
1029 if (debounce)
1030 queue_delayed_work(system_power_efficient_wq,
1031 &info->micd_detect_work,
1032 msecs_to_jiffies(debounce));
1033 else
1034 arizona_micd_detect(&info->micd_detect_work.work);
1035
1036 return IRQ_HANDLED;
1037}
1038
1039static void arizona_hpdet_work(struct work_struct *work)
1040{
1041 struct arizona_extcon_info *info = container_of(work,
1042 struct arizona_extcon_info,
1043 hpdet_work.work);
1044
1045 mutex_lock(&info->lock);
1046 arizona_start_hpdet_acc_id(info);
1047 mutex_unlock(&info->lock);
1048}
1049
1050static int arizona_hpdet_wait(struct arizona_extcon_info *info)
1051{
1052 struct arizona *arizona = info->arizona;
1053 unsigned int val;
1054 int i, ret;
1055
1056 for (i = 0; i < ARIZONA_HPDET_WAIT_COUNT; i++) {
1057 ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2,
1058 &val);
1059 if (ret) {
1060 dev_err(arizona->dev,
1061 "Failed to read HPDET state: %d\n", ret);
1062 return ret;
1063 }
1064
1065 switch (info->hpdet_ip_version) {
1066 case 0:
1067 if (val & ARIZONA_HP_DONE)
1068 return 0;
1069 break;
1070 default:
1071 if (val & ARIZONA_HP_DONE_B)
1072 return 0;
1073 break;
1074 }
1075
1076 msleep(ARIZONA_HPDET_WAIT_DELAY_MS);
1077 }
1078
1079 dev_warn(arizona->dev, "HPDET did not appear to complete\n");
1080
1081 return -ETIMEDOUT;
1082}
1083
1084static irqreturn_t arizona_jackdet(int irq, void *data)
1085{
1086 struct arizona_extcon_info *info = data;
1087 struct arizona *arizona = info->arizona;
1088 unsigned int val, present, mask;
1089 bool cancelled_hp, cancelled_mic;
1090 int ret, i;
1091
1092 cancelled_hp = cancel_delayed_work_sync(&info->hpdet_work);
1093 cancelled_mic = cancel_delayed_work_sync(&info->micd_timeout_work);
1094
1095 pm_runtime_get_sync(info->dev);
1096
1097 mutex_lock(&info->lock);
1098
1099 if (info->micd_clamp) {
1100 mask = ARIZONA_MICD_CLAMP_STS;
1101 present = 0;
1102 } else {
1103 mask = ARIZONA_JD1_STS;
1104 if (arizona->pdata.jd_invert)
1105 present = 0;
1106 else
1107 present = ARIZONA_JD1_STS;
1108 }
1109
1110 ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
1111 if (ret != 0) {
1112 dev_err(arizona->dev, "Failed to read jackdet status: %d\n",
1113 ret);
1114 mutex_unlock(&info->lock);
1115 pm_runtime_put_autosuspend(info->dev);
1116 return IRQ_NONE;
1117 }
1118
1119 val &= mask;
1120 if (val == info->last_jackdet) {
1121 dev_dbg(arizona->dev, "Suppressing duplicate JACKDET\n");
1122 if (cancelled_hp)
1123 queue_delayed_work(system_power_efficient_wq,
1124 &info->hpdet_work,
1125 msecs_to_jiffies(HPDET_DEBOUNCE));
1126
1127 if (cancelled_mic) {
1128 int micd_timeout = info->micd_timeout;
1129
1130 queue_delayed_work(system_power_efficient_wq,
1131 &info->micd_timeout_work,
1132 msecs_to_jiffies(micd_timeout));
1133 }
1134
1135 goto out;
1136 }
1137 info->last_jackdet = val;
1138
1139 if (info->last_jackdet == present) {
1140 dev_dbg(arizona->dev, "Detected jack\n");
1141 ret = extcon_set_state_sync(info->edev,
1142 EXTCON_MECHANICAL, true);
1143
1144 if (ret != 0)
1145 dev_err(arizona->dev, "Mechanical report failed: %d\n",
1146 ret);
1147
1148 if (!arizona->pdata.hpdet_acc_id) {
1149 info->detecting = true;
1150 info->mic = false;
1151 info->jack_flips = 0;
1152
1153 arizona_start_mic(info);
1154 } else {
1155 queue_delayed_work(system_power_efficient_wq,
1156 &info->hpdet_work,
1157 msecs_to_jiffies(HPDET_DEBOUNCE));
1158 }
1159
1160 if (info->micd_clamp || !arizona->pdata.jd_invert)
1161 regmap_update_bits(arizona->regmap,
1162 ARIZONA_JACK_DETECT_DEBOUNCE,
1163 ARIZONA_MICD_CLAMP_DB |
1164 ARIZONA_JD1_DB, 0);
1165 } else {
1166 dev_dbg(arizona->dev, "Detected jack removal\n");
1167
1168 arizona_stop_mic(info);
1169
1170 info->num_hpdet_res = 0;
1171 for (i = 0; i < ARRAY_SIZE(info->hpdet_res); i++)
1172 info->hpdet_res[i] = 0;
1173 info->mic = false;
1174 info->hpdet_done = false;
1175 info->hpdet_retried = false;
1176
1177 for (i = 0; i < info->num_micd_ranges; i++)
1178 input_report_key(info->input,
1179 info->micd_ranges[i].key, 0);
1180 input_sync(info->input);
1181
1182 for (i = 0; i < ARRAY_SIZE(arizona_cable) - 1; i++) {
1183 ret = extcon_set_state_sync(info->edev,
1184 arizona_cable[i], false);
1185 if (ret != 0)
1186 dev_err(arizona->dev,
1187 "Removal report failed: %d\n", ret);
1188 }
1189
1190 /*
1191 * If the jack was removed during a headphone detection we
1192 * need to wait for the headphone detection to finish, as
1193 * it can not be aborted. We don't want to be able to start
1194 * a new headphone detection from a fresh insert until this
1195 * one is finished.
1196 */
1197 arizona_hpdet_wait(info);
1198
1199 regmap_update_bits(arizona->regmap,
1200 ARIZONA_JACK_DETECT_DEBOUNCE,
1201 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB,
1202 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB);
1203 }
1204
1205 if (arizona->pdata.micd_timeout)
1206 info->micd_timeout = arizona->pdata.micd_timeout;
1207 else
1208 info->micd_timeout = DEFAULT_MICD_TIMEOUT;
1209
1210out:
1211 /* Clear trig_sts to make sure DCVDD is not forced up */
1212 regmap_write(arizona->regmap, ARIZONA_AOD_WKUP_AND_TRIG,
1213 ARIZONA_MICD_CLAMP_FALL_TRIG_STS |
1214 ARIZONA_MICD_CLAMP_RISE_TRIG_STS |
1215 ARIZONA_JD1_FALL_TRIG_STS |
1216 ARIZONA_JD1_RISE_TRIG_STS);
1217
1218 mutex_unlock(&info->lock);
1219
1220 pm_runtime_mark_last_busy(info->dev);
1221 pm_runtime_put_autosuspend(info->dev);
1222
1223 return IRQ_HANDLED;
1224}
1225
1226/* Map a level onto a slot in the register bank */
1227static void arizona_micd_set_level(struct arizona *arizona, int index,
1228 unsigned int level)
1229{
1230 int reg;
1231 unsigned int mask;
1232
1233 reg = ARIZONA_MIC_DETECT_LEVEL_4 - (index / 2);
1234
1235 if (!(index % 2)) {
1236 mask = 0x3f00;
1237 level <<= 8;
1238 } else {
1239 mask = 0x3f;
1240 }
1241
1242 /* Program the level itself */
1243 regmap_update_bits(arizona->regmap, reg, mask, level);
1244}
1245
1246static int arizona_extcon_get_micd_configs(struct device *dev,
1247 struct arizona *arizona)
1248{
1249 const char * const prop = "wlf,micd-configs";
1250 const int entries_per_config = 3;
1251 struct arizona_micd_config *micd_configs;
1252 int nconfs, ret;
1253 int i, j;
1254 u32 *vals;
1255
1256 nconfs = device_property_read_u32_array(arizona->dev, prop, NULL, 0);
1257 if (nconfs <= 0)
1258 return 0;
1259
1260 vals = kcalloc(nconfs, sizeof(u32), GFP_KERNEL);
1261 if (!vals)
1262 return -ENOMEM;
1263
1264 ret = device_property_read_u32_array(arizona->dev, prop, vals, nconfs);
1265 if (ret < 0)
1266 goto out;
1267
1268 nconfs /= entries_per_config;
1269 micd_configs = devm_kcalloc(dev, nconfs, sizeof(*micd_configs),
1270 GFP_KERNEL);
1271 if (!micd_configs) {
1272 ret = -ENOMEM;
1273 goto out;
1274 }
1275
1276 for (i = 0, j = 0; i < nconfs; ++i) {
1277 micd_configs[i].src = vals[j++] ? ARIZONA_ACCDET_SRC : 0;
1278 micd_configs[i].bias = vals[j++];
1279 micd_configs[i].gpio = vals[j++];
1280 }
1281
1282 arizona->pdata.micd_configs = micd_configs;
1283 arizona->pdata.num_micd_configs = nconfs;
1284
1285out:
1286 kfree(vals);
1287 return ret;
1288}
1289
1290static int arizona_extcon_device_get_pdata(struct device *dev,
1291 struct arizona *arizona)
1292{
1293 struct arizona_pdata *pdata = &arizona->pdata;
1294 unsigned int val = ARIZONA_ACCDET_MODE_HPL;
1295 int ret;
1296
1297 device_property_read_u32(arizona->dev, "wlf,hpdet-channel", &val);
1298 switch (val) {
1299 case ARIZONA_ACCDET_MODE_HPL:
1300 case ARIZONA_ACCDET_MODE_HPR:
1301 pdata->hpdet_channel = val;
1302 break;
1303 default:
1304 dev_err(arizona->dev,
1305 "Wrong wlf,hpdet-channel DT value %d\n", val);
1306 pdata->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
1307 }
1308
1309 device_property_read_u32(arizona->dev, "wlf,micd-detect-debounce",
1310 &pdata->micd_detect_debounce);
1311
1312 device_property_read_u32(arizona->dev, "wlf,micd-bias-start-time",
1313 &pdata->micd_bias_start_time);
1314
1315 device_property_read_u32(arizona->dev, "wlf,micd-rate",
1316 &pdata->micd_rate);
1317
1318 device_property_read_u32(arizona->dev, "wlf,micd-dbtime",
1319 &pdata->micd_dbtime);
1320
1321 device_property_read_u32(arizona->dev, "wlf,micd-timeout-ms",
1322 &pdata->micd_timeout);
1323
1324 pdata->micd_force_micbias = device_property_read_bool(arizona->dev,
1325 "wlf,micd-force-micbias");
1326
1327 pdata->micd_software_compare = device_property_read_bool(arizona->dev,
1328 "wlf,micd-software-compare");
1329
1330 pdata->jd_invert = device_property_read_bool(arizona->dev,
1331 "wlf,jd-invert");
1332
1333 device_property_read_u32(arizona->dev, "wlf,gpsw", &pdata->gpsw);
1334
1335 pdata->jd_gpio5 = device_property_read_bool(arizona->dev,
1336 "wlf,use-jd2");
1337 pdata->jd_gpio5_nopull = device_property_read_bool(arizona->dev,
1338 "wlf,use-jd2-nopull");
1339
1340 ret = arizona_extcon_get_micd_configs(dev, arizona);
1341 if (ret < 0)
1342 dev_err(arizona->dev, "Failed to read micd configs: %d\n", ret);
1343
1344 return 0;
1345}
1346
1347static int arizona_extcon_probe(struct platform_device *pdev)
1348{
1349 struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
1350 struct arizona_pdata *pdata = &arizona->pdata;
1351 struct arizona_extcon_info *info;
1352 unsigned int val;
1353 unsigned int clamp_mode;
1354 int jack_irq_fall, jack_irq_rise;
1355 int ret, mode, i, j;
1356
1357 if (!arizona->dapm || !arizona->dapm->card)
1358 return -EPROBE_DEFER;
1359
1360 info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
1361 if (!info)
1362 return -ENOMEM;
1363
1364 if (!dev_get_platdata(arizona->dev))
1365 arizona_extcon_device_get_pdata(&pdev->dev, arizona);
1366
1367 info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
1368 if (IS_ERR(info->micvdd)) {
1369 ret = PTR_ERR(info->micvdd);
1370 dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
1371 return ret;
1372 }
1373
1374 mutex_init(&info->lock);
1375 info->arizona = arizona;
1376 info->dev = &pdev->dev;
1377 info->last_jackdet = ~(ARIZONA_MICD_CLAMP_STS | ARIZONA_JD1_STS);
1378 INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work);
1379 INIT_DELAYED_WORK(&info->micd_detect_work, arizona_micd_detect);
1380 INIT_DELAYED_WORK(&info->micd_timeout_work, arizona_micd_timeout_work);
1381 platform_set_drvdata(pdev, info);
1382
1383 switch (arizona->type) {
1384 case WM5102:
1385 switch (arizona->rev) {
1386 case 0:
1387 info->micd_reva = true;
1388 break;
1389 default:
1390 info->micd_clamp = true;
1391 info->hpdet_ip_version = 1;
1392 break;
1393 }
1394 break;
1395 case WM5110:
1396 case WM8280:
1397 switch (arizona->rev) {
1398 case 0 ... 2:
1399 break;
1400 default:
1401 info->micd_clamp = true;
1402 info->hpdet_ip_version = 2;
1403 break;
1404 }
1405 break;
1406 case WM8998:
1407 case WM1814:
1408 info->micd_clamp = true;
1409 info->hpdet_ip_version = 2;
1410 break;
1411 default:
1412 break;
1413 }
1414
1415 info->edev = devm_extcon_dev_allocate(&pdev->dev, arizona_cable);
1416 if (IS_ERR(info->edev)) {
1417 dev_err(&pdev->dev, "failed to allocate extcon device\n");
1418 return -ENOMEM;
1419 }
1420
1421 ret = devm_extcon_dev_register(&pdev->dev, info->edev);
1422 if (ret < 0) {
1423 dev_err(arizona->dev, "extcon_dev_register() failed: %d\n",
1424 ret);
1425 return ret;
1426 }
1427
1428 info->input = devm_input_allocate_device(&pdev->dev);
1429 if (!info->input) {
1430 dev_err(arizona->dev, "Can't allocate input dev\n");
1431 ret = -ENOMEM;
1432 goto err_register;
1433 }
1434
1435 info->input->name = "Headset";
1436 info->input->phys = "arizona/extcon";
1437
1438 if (pdata->num_micd_configs) {
1439 info->micd_modes = pdata->micd_configs;
1440 info->micd_num_modes = pdata->num_micd_configs;
1441 } else {
1442 info->micd_modes = micd_default_modes;
1443 info->micd_num_modes = ARRAY_SIZE(micd_default_modes);
1444 }
1445
1446 if (arizona->pdata.gpsw > 0)
1447 regmap_update_bits(arizona->regmap, ARIZONA_GP_SWITCH_1,
1448 ARIZONA_SW1_MODE_MASK, arizona->pdata.gpsw);
1449
1450 if (pdata->micd_pol_gpio > 0) {
1451 if (info->micd_modes[0].gpio)
1452 mode = GPIOF_OUT_INIT_HIGH;
1453 else
1454 mode = GPIOF_OUT_INIT_LOW;
1455
1456 ret = devm_gpio_request_one(&pdev->dev, pdata->micd_pol_gpio,
1457 mode, "MICD polarity");
1458 if (ret != 0) {
1459 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
1460 pdata->micd_pol_gpio, ret);
1461 goto err_register;
1462 }
1463
1464 info->micd_pol_gpio = gpio_to_desc(pdata->micd_pol_gpio);
1465 } else {
1466 if (info->micd_modes[0].gpio)
1467 mode = GPIOD_OUT_HIGH;
1468 else
1469 mode = GPIOD_OUT_LOW;
1470
1471 /* We can't use devm here because we need to do the get
1472 * against the MFD device, as that is where the of_node
1473 * will reside, but if we devm against that the GPIO
1474 * will not be freed if the extcon driver is unloaded.
1475 */
1476 info->micd_pol_gpio = gpiod_get_optional(arizona->dev,
1477 "wlf,micd-pol",
1478 GPIOD_OUT_LOW);
1479 if (IS_ERR(info->micd_pol_gpio)) {
1480 ret = PTR_ERR(info->micd_pol_gpio);
1481 dev_err(arizona->dev,
1482 "Failed to get microphone polarity GPIO: %d\n",
1483 ret);
1484 goto err_register;
1485 }
1486 }
1487
1488 if (arizona->pdata.hpdet_id_gpio > 0) {
1489 ret = devm_gpio_request_one(&pdev->dev,
1490 arizona->pdata.hpdet_id_gpio,
1491 GPIOF_OUT_INIT_LOW,
1492 "HPDET");
1493 if (ret != 0) {
1494 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
1495 arizona->pdata.hpdet_id_gpio, ret);
1496 goto err_gpio;
1497 }
1498 }
1499
1500 if (arizona->pdata.micd_bias_start_time)
1501 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1502 ARIZONA_MICD_BIAS_STARTTIME_MASK,
1503 arizona->pdata.micd_bias_start_time
1504 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT);
1505
1506 if (arizona->pdata.micd_rate)
1507 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1508 ARIZONA_MICD_RATE_MASK,
1509 arizona->pdata.micd_rate
1510 << ARIZONA_MICD_RATE_SHIFT);
1511
1512 switch (arizona->pdata.micd_dbtime) {
1513 case MICD_DBTIME_FOUR_READINGS:
1514 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1515 ARIZONA_MICD_DBTIME_MASK,
1516 ARIZONA_MICD_DBTIME);
1517 break;
1518 case MICD_DBTIME_TWO_READINGS:
1519 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1520 ARIZONA_MICD_DBTIME_MASK, 0);
1521 break;
1522 default:
1523 break;
1524 }
1525
1526 BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) <
1527 ARIZONA_NUM_MICD_BUTTON_LEVELS);
1528
1529 if (arizona->pdata.num_micd_ranges) {
1530 info->micd_ranges = pdata->micd_ranges;
1531 info->num_micd_ranges = pdata->num_micd_ranges;
1532 } else {
1533 info->micd_ranges = micd_default_ranges;
1534 info->num_micd_ranges = ARRAY_SIZE(micd_default_ranges);
1535 }
1536
1537 if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_RANGE) {
1538 dev_err(arizona->dev, "Too many MICD ranges: %d\n",
1539 arizona->pdata.num_micd_ranges);
1540 }
1541
1542 if (info->num_micd_ranges > 1) {
1543 for (i = 1; i < info->num_micd_ranges; i++) {
1544 if (info->micd_ranges[i - 1].max >
1545 info->micd_ranges[i].max) {
1546 dev_err(arizona->dev,
1547 "MICD ranges must be sorted\n");
1548 ret = -EINVAL;
1549 goto err_gpio;
1550 }
1551 }
1552 }
1553
1554 /* Disable all buttons by default */
1555 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
1556 ARIZONA_MICD_LVL_SEL_MASK, 0x81);
1557
1558 /* Set up all the buttons the user specified */
1559 for (i = 0; i < info->num_micd_ranges; i++) {
1560 for (j = 0; j < ARIZONA_NUM_MICD_BUTTON_LEVELS; j++)
1561 if (arizona_micd_levels[j] >= info->micd_ranges[i].max)
1562 break;
1563
1564 if (j == ARIZONA_NUM_MICD_BUTTON_LEVELS) {
1565 dev_err(arizona->dev, "Unsupported MICD level %d\n",
1566 info->micd_ranges[i].max);
1567 ret = -EINVAL;
1568 goto err_gpio;
1569 }
1570
1571 dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n",
1572 arizona_micd_levels[j], i);
1573
1574 arizona_micd_set_level(arizona, i, j);
1575 input_set_capability(info->input, EV_KEY,
1576 info->micd_ranges[i].key);
1577
1578 /* Enable reporting of that range */
1579 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
1580 1 << i, 1 << i);
1581 }
1582
1583 /* Set all the remaining keys to a maximum */
1584 for (; i < ARIZONA_MAX_MICD_RANGE; i++)
1585 arizona_micd_set_level(arizona, i, 0x3f);
1586
1587 /*
1588 * If we have a clamp use it, activating in conjunction with
1589 * GPIO5 if that is connected for jack detect operation.
1590 */
1591 if (info->micd_clamp) {
1592 if (arizona->pdata.jd_gpio5) {
1593 /* Put the GPIO into input mode with optional pull */
1594 val = 0xc101;
1595 if (arizona->pdata.jd_gpio5_nopull)
1596 val &= ~ARIZONA_GPN_PU;
1597
1598 regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL,
1599 val);
1600
1601 if (arizona->pdata.jd_invert)
1602 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH_GP5H;
1603 else
1604 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL_GP5H;
1605 } else {
1606 if (arizona->pdata.jd_invert)
1607 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH;
1608 else
1609 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL;
1610 }
1611
1612 regmap_update_bits(arizona->regmap,
1613 ARIZONA_MICD_CLAMP_CONTROL,
1614 ARIZONA_MICD_CLAMP_MODE_MASK, clamp_mode);
1615
1616 regmap_update_bits(arizona->regmap,
1617 ARIZONA_JACK_DETECT_DEBOUNCE,
1618 ARIZONA_MICD_CLAMP_DB,
1619 ARIZONA_MICD_CLAMP_DB);
1620 }
1621
1622 arizona_extcon_set_mode(info, 0);
1623
1624 pm_runtime_enable(&pdev->dev);
1625 pm_runtime_idle(&pdev->dev);
1626 pm_runtime_get_sync(&pdev->dev);
1627
1628 if (info->micd_clamp) {
1629 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
1630 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
1631 } else {
1632 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
1633 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
1634 }
1635
1636 ret = arizona_request_irq(arizona, jack_irq_rise,
1637 "JACKDET rise", arizona_jackdet, info);
1638 if (ret != 0) {
1639 dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
1640 ret);
1641 goto err_gpio;
1642 }
1643
1644 ret = arizona_set_irq_wake(arizona, jack_irq_rise, 1);
1645 if (ret != 0) {
1646 dev_err(&pdev->dev, "Failed to set JD rise IRQ wake: %d\n",
1647 ret);
1648 goto err_rise;
1649 }
1650
1651 ret = arizona_request_irq(arizona, jack_irq_fall,
1652 "JACKDET fall", arizona_jackdet, info);
1653 if (ret != 0) {
1654 dev_err(&pdev->dev, "Failed to get JD fall IRQ: %d\n", ret);
1655 goto err_rise_wake;
1656 }
1657
1658 ret = arizona_set_irq_wake(arizona, jack_irq_fall, 1);
1659 if (ret != 0) {
1660 dev_err(&pdev->dev, "Failed to set JD fall IRQ wake: %d\n",
1661 ret);
1662 goto err_fall;
1663 }
1664
1665 ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET,
1666 "MICDET", arizona_micdet, info);
1667 if (ret != 0) {
1668 dev_err(&pdev->dev, "Failed to get MICDET IRQ: %d\n", ret);
1669 goto err_fall_wake;
1670 }
1671
1672 ret = arizona_request_irq(arizona, ARIZONA_IRQ_HPDET,
1673 "HPDET", arizona_hpdet_irq, info);
1674 if (ret != 0) {
1675 dev_err(&pdev->dev, "Failed to get HPDET IRQ: %d\n", ret);
1676 goto err_micdet;
1677 }
1678
1679 arizona_clk32k_enable(arizona);
1680 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE,
1681 ARIZONA_JD1_DB, ARIZONA_JD1_DB);
1682 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1683 ARIZONA_JD1_ENA, ARIZONA_JD1_ENA);
1684
1685 ret = regulator_allow_bypass(info->micvdd, true);
1686 if (ret != 0)
1687 dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n",
1688 ret);
1689
1690 pm_runtime_put(&pdev->dev);
1691
1692 ret = input_register_device(info->input);
1693 if (ret) {
1694 dev_err(&pdev->dev, "Can't register input device: %d\n", ret);
1695 goto err_hpdet;
1696 }
1697
1698 return 0;
1699
1700err_hpdet:
1701 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
1702err_micdet:
1703 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
1704err_fall_wake:
1705 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1706err_fall:
1707 arizona_free_irq(arizona, jack_irq_fall, info);
1708err_rise_wake:
1709 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1710err_rise:
1711 arizona_free_irq(arizona, jack_irq_rise, info);
1712err_gpio:
1713 gpiod_put(info->micd_pol_gpio);
1714err_register:
1715 pm_runtime_disable(&pdev->dev);
1716 return ret;
1717}
1718
1719static int arizona_extcon_remove(struct platform_device *pdev)
1720{
1721 struct arizona_extcon_info *info = platform_get_drvdata(pdev);
1722 struct arizona *arizona = info->arizona;
1723 int jack_irq_rise, jack_irq_fall;
1724 bool change;
1725 int ret;
1726
1727 ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
1728 ARIZONA_MICD_ENA, 0,
1729 &change);
1730 if (ret < 0) {
1731 dev_err(&pdev->dev, "Failed to disable micd on remove: %d\n",
1732 ret);
1733 } else if (change) {
1734 regulator_disable(info->micvdd);
1735 pm_runtime_put(info->dev);
1736 }
1737
1738 gpiod_put(info->micd_pol_gpio);
1739
1740 pm_runtime_disable(&pdev->dev);
1741
1742 regmap_update_bits(arizona->regmap,
1743 ARIZONA_MICD_CLAMP_CONTROL,
1744 ARIZONA_MICD_CLAMP_MODE_MASK, 0);
1745
1746 if (info->micd_clamp) {
1747 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
1748 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
1749 } else {
1750 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
1751 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
1752 }
1753
1754 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1755 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1756 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
1757 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
1758 arizona_free_irq(arizona, jack_irq_rise, info);
1759 arizona_free_irq(arizona, jack_irq_fall, info);
1760 cancel_delayed_work_sync(&info->hpdet_work);
1761 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1762 ARIZONA_JD1_ENA, 0);
1763 arizona_clk32k_disable(arizona);
1764
1765 return 0;
1766}
1767
1768static struct platform_driver arizona_extcon_driver = {
1769 .driver = {
1770 .name = "arizona-extcon",
1771 },
1772 .probe = arizona_extcon_probe,
1773 .remove = arizona_extcon_remove,
1774};
1775
1776module_platform_driver(arizona_extcon_driver);
1777
1778MODULE_DESCRIPTION("Arizona Extcon driver");
1779MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1780MODULE_LICENSE("GPL");
1781MODULE_ALIAS("platform:extcon-arizona");