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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 bool micd_reva;
81 bool micd_clamp;
82
83 struct delayed_work hpdet_work;
84 struct delayed_work micd_detect_work;
85 struct delayed_work micd_timeout_work;
86
87 bool hpdet_active;
88 bool hpdet_done;
89 bool hpdet_retried;
90
91 int num_hpdet_res;
92 unsigned int hpdet_res[3];
93
94 bool mic;
95 bool detecting;
96 int jack_flips;
97
98 int hpdet_ip_version;
99
100 struct extcon_dev *edev;
101
102 struct gpio_desc *micd_pol_gpio;
103};
104
105static const struct arizona_micd_config micd_default_modes[] = {
106 { ARIZONA_ACCDET_SRC, 1, 0 },
107 { 0, 2, 1 },
108};
109
110static const struct arizona_micd_range micd_default_ranges[] = {
111 { .max = 11, .key = BTN_0 },
112 { .max = 28, .key = BTN_1 },
113 { .max = 54, .key = BTN_2 },
114 { .max = 100, .key = BTN_3 },
115 { .max = 186, .key = BTN_4 },
116 { .max = 430, .key = BTN_5 },
117};
118
119/* The number of levels in arizona_micd_levels valid for button thresholds */
120#define ARIZONA_NUM_MICD_BUTTON_LEVELS 64
121
122static const int arizona_micd_levels[] = {
123 3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46,
124 49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100,
125 105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245,
126 270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071,
127 1257, 30000,
128};
129
130static const unsigned int arizona_cable[] = {
131 EXTCON_MECHANICAL,
132 EXTCON_JACK_MICROPHONE,
133 EXTCON_JACK_HEADPHONE,
134 EXTCON_JACK_LINE_OUT,
135 EXTCON_NONE,
136};
137
138static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info);
139
140static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
141 bool clamp)
142{
143 struct arizona *arizona = info->arizona;
144 unsigned int mask = 0, val = 0;
145 unsigned int cap_sel = 0;
146 int ret;
147
148 switch (arizona->type) {
149 case WM8998:
150 case WM1814:
151 mask = 0;
152 break;
153 case WM5110:
154 case WM8280:
155 mask = ARIZONA_HP1L_SHRTO | ARIZONA_HP1L_FLWR |
156 ARIZONA_HP1L_SHRTI;
157 if (clamp) {
158 val = ARIZONA_HP1L_SHRTO;
159 cap_sel = ARIZONA_TST_CAP_CLAMP;
160 } else {
161 val = ARIZONA_HP1L_FLWR | ARIZONA_HP1L_SHRTI;
162 cap_sel = ARIZONA_TST_CAP_DEFAULT;
163 }
164
165 ret = regmap_update_bits(arizona->regmap,
166 ARIZONA_HP_TEST_CTRL_1,
167 ARIZONA_HP1_TST_CAP_SEL_MASK,
168 cap_sel);
169 if (ret != 0)
170 dev_warn(arizona->dev,
171 "Failed to set TST_CAP_SEL: %d\n", ret);
172 break;
173 default:
174 mask = ARIZONA_RMV_SHRT_HP1L;
175 if (clamp)
176 val = ARIZONA_RMV_SHRT_HP1L;
177 break;
178 }
179
180 snd_soc_dapm_mutex_lock(arizona->dapm);
181
182 arizona->hpdet_clamp = clamp;
183
184 /* Keep the HP output stages disabled while doing the clamp */
185 if (clamp) {
186 ret = regmap_update_bits(arizona->regmap,
187 ARIZONA_OUTPUT_ENABLES_1,
188 ARIZONA_OUT1L_ENA |
189 ARIZONA_OUT1R_ENA, 0);
190 if (ret != 0)
191 dev_warn(arizona->dev,
192 "Failed to disable headphone outputs: %d\n",
193 ret);
194 }
195
196 if (mask) {
197 ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1L,
198 mask, val);
199 if (ret != 0)
200 dev_warn(arizona->dev, "Failed to do clamp: %d\n",
201 ret);
202
203 ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1R,
204 mask, val);
205 if (ret != 0)
206 dev_warn(arizona->dev, "Failed to do clamp: %d\n",
207 ret);
208 }
209
210 /* Restore the desired state while not doing the clamp */
211 if (!clamp) {
212 ret = regmap_update_bits(arizona->regmap,
213 ARIZONA_OUTPUT_ENABLES_1,
214 ARIZONA_OUT1L_ENA |
215 ARIZONA_OUT1R_ENA, arizona->hp_ena);
216 if (ret != 0)
217 dev_warn(arizona->dev,
218 "Failed to restore headphone outputs: %d\n",
219 ret);
220 }
221
222 snd_soc_dapm_mutex_unlock(arizona->dapm);
223}
224
225static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
226{
227 struct arizona *arizona = info->arizona;
228
229 mode %= info->micd_num_modes;
230
231 gpiod_set_value_cansleep(info->micd_pol_gpio,
232 info->micd_modes[mode].gpio);
233
234 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
235 ARIZONA_MICD_BIAS_SRC_MASK,
236 info->micd_modes[mode].bias <<
237 ARIZONA_MICD_BIAS_SRC_SHIFT);
238 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
239 ARIZONA_ACCDET_SRC, info->micd_modes[mode].src);
240
241 info->micd_mode = mode;
242
243 dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode);
244}
245
246static const char *arizona_extcon_get_micbias(struct arizona_extcon_info *info)
247{
248 switch (info->micd_modes[0].bias) {
249 case 1:
250 return "MICBIAS1";
251 case 2:
252 return "MICBIAS2";
253 case 3:
254 return "MICBIAS3";
255 default:
256 return "MICVDD";
257 }
258}
259
260static void arizona_extcon_pulse_micbias(struct arizona_extcon_info *info)
261{
262 struct arizona *arizona = info->arizona;
263 const char *widget = arizona_extcon_get_micbias(info);
264 struct snd_soc_dapm_context *dapm = arizona->dapm;
265 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
266 int ret;
267
268 ret = snd_soc_component_force_enable_pin(component, widget);
269 if (ret != 0)
270 dev_warn(arizona->dev, "Failed to enable %s: %d\n",
271 widget, ret);
272
273 snd_soc_dapm_sync(dapm);
274
275 if (!arizona->pdata.micd_force_micbias) {
276 ret = snd_soc_component_disable_pin(component, widget);
277 if (ret != 0)
278 dev_warn(arizona->dev, "Failed to disable %s: %d\n",
279 widget, ret);
280
281 snd_soc_dapm_sync(dapm);
282 }
283}
284
285static void arizona_start_mic(struct arizona_extcon_info *info)
286{
287 struct arizona *arizona = info->arizona;
288 bool change;
289 int ret;
290 unsigned int mode;
291
292 /* Microphone detection can't use idle mode */
293 pm_runtime_get(info->dev);
294
295 if (info->detecting) {
296 ret = regulator_allow_bypass(info->micvdd, false);
297 if (ret != 0) {
298 dev_err(arizona->dev,
299 "Failed to regulate MICVDD: %d\n",
300 ret);
301 }
302 }
303
304 ret = regulator_enable(info->micvdd);
305 if (ret != 0) {
306 dev_err(arizona->dev, "Failed to enable MICVDD: %d\n",
307 ret);
308 }
309
310 if (info->micd_reva) {
311 const struct reg_sequence reva[] = {
312 { 0x80, 0x3 },
313 { 0x294, 0x0 },
314 { 0x80, 0x0 },
315 };
316
317 regmap_multi_reg_write(arizona->regmap, reva, ARRAY_SIZE(reva));
318 }
319
320 if (info->detecting && arizona->pdata.micd_software_compare)
321 mode = ARIZONA_ACCDET_MODE_ADC;
322 else
323 mode = ARIZONA_ACCDET_MODE_MIC;
324
325 regmap_update_bits(arizona->regmap,
326 ARIZONA_ACCESSORY_DETECT_MODE_1,
327 ARIZONA_ACCDET_MODE_MASK, mode);
328
329 arizona_extcon_pulse_micbias(info);
330
331 ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
332 ARIZONA_MICD_ENA, ARIZONA_MICD_ENA,
333 &change);
334 if (ret < 0) {
335 dev_err(arizona->dev, "Failed to enable micd: %d\n", ret);
336 } else if (!change) {
337 regulator_disable(info->micvdd);
338 pm_runtime_put_autosuspend(info->dev);
339 }
340}
341
342static void arizona_stop_mic(struct arizona_extcon_info *info)
343{
344 struct arizona *arizona = info->arizona;
345 const char *widget = arizona_extcon_get_micbias(info);
346 struct snd_soc_dapm_context *dapm = arizona->dapm;
347 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
348 bool change = false;
349 int ret;
350
351 ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
352 ARIZONA_MICD_ENA, 0,
353 &change);
354 if (ret < 0)
355 dev_err(arizona->dev, "Failed to disable micd: %d\n", ret);
356
357 ret = snd_soc_component_disable_pin(component, widget);
358 if (ret != 0)
359 dev_warn(arizona->dev,
360 "Failed to disable %s: %d\n",
361 widget, ret);
362
363 snd_soc_dapm_sync(dapm);
364
365 if (info->micd_reva) {
366 const struct reg_sequence reva[] = {
367 { 0x80, 0x3 },
368 { 0x294, 0x2 },
369 { 0x80, 0x0 },
370 };
371
372 regmap_multi_reg_write(arizona->regmap, reva, ARRAY_SIZE(reva));
373 }
374
375 ret = regulator_allow_bypass(info->micvdd, true);
376 if (ret != 0) {
377 dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
378 ret);
379 }
380
381 if (change) {
382 regulator_disable(info->micvdd);
383 pm_runtime_mark_last_busy(info->dev);
384 pm_runtime_put_autosuspend(info->dev);
385 }
386}
387
388static struct {
389 unsigned int threshold;
390 unsigned int factor_a;
391 unsigned int factor_b;
392} arizona_hpdet_b_ranges[] = {
393 { 100, 5528, 362464 },
394 { 169, 11084, 6186851 },
395 { 169, 11065, 65460395 },
396};
397
398#define ARIZONA_HPDET_B_RANGE_MAX 0x3fb
399
400static struct {
401 int min;
402 int max;
403} arizona_hpdet_c_ranges[] = {
404 { 0, 30 },
405 { 8, 100 },
406 { 100, 1000 },
407 { 1000, 10000 },
408};
409
410static int arizona_hpdet_read(struct arizona_extcon_info *info)
411{
412 struct arizona *arizona = info->arizona;
413 unsigned int val, range;
414 int ret;
415
416 ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2, &val);
417 if (ret != 0) {
418 dev_err(arizona->dev, "Failed to read HPDET status: %d\n",
419 ret);
420 return ret;
421 }
422
423 switch (info->hpdet_ip_version) {
424 case 0:
425 if (!(val & ARIZONA_HP_DONE)) {
426 dev_err(arizona->dev, "HPDET did not complete: %x\n",
427 val);
428 return -EAGAIN;
429 }
430
431 val &= ARIZONA_HP_LVL_MASK;
432 break;
433
434 case 1:
435 if (!(val & ARIZONA_HP_DONE_B)) {
436 dev_err(arizona->dev, "HPDET did not complete: %x\n",
437 val);
438 return -EAGAIN;
439 }
440
441 ret = regmap_read(arizona->regmap, ARIZONA_HP_DACVAL, &val);
442 if (ret != 0) {
443 dev_err(arizona->dev, "Failed to read HP value: %d\n",
444 ret);
445 return -EAGAIN;
446 }
447
448 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
449 &range);
450 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
451 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
452
453 if (range < ARRAY_SIZE(arizona_hpdet_b_ranges) - 1 &&
454 (val < arizona_hpdet_b_ranges[range].threshold ||
455 val >= ARIZONA_HPDET_B_RANGE_MAX)) {
456 range++;
457 dev_dbg(arizona->dev, "Moving to HPDET range %d\n",
458 range);
459 regmap_update_bits(arizona->regmap,
460 ARIZONA_HEADPHONE_DETECT_1,
461 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
462 range <<
463 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
464 return -EAGAIN;
465 }
466
467 /* If we go out of range report top of range */
468 if (val < arizona_hpdet_b_ranges[range].threshold ||
469 val >= ARIZONA_HPDET_B_RANGE_MAX) {
470 dev_dbg(arizona->dev, "Measurement out of range\n");
471 return ARIZONA_HPDET_MAX;
472 }
473
474 dev_dbg(arizona->dev, "HPDET read %d in range %d\n",
475 val, range);
476
477 val = arizona_hpdet_b_ranges[range].factor_b
478 / ((val * 100) -
479 arizona_hpdet_b_ranges[range].factor_a);
480 break;
481
482 case 2:
483 if (!(val & ARIZONA_HP_DONE_B)) {
484 dev_err(arizona->dev, "HPDET did not complete: %x\n",
485 val);
486 return -EAGAIN;
487 }
488
489 val &= ARIZONA_HP_LVL_B_MASK;
490 /* Convert to ohms, the value is in 0.5 ohm increments */
491 val /= 2;
492
493 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
494 &range);
495 range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
496 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
497
498 /* Skip up a range, or report? */
499 if (range < ARRAY_SIZE(arizona_hpdet_c_ranges) - 1 &&
500 (val >= arizona_hpdet_c_ranges[range].max)) {
501 range++;
502 dev_dbg(arizona->dev, "Moving to HPDET range %d-%d\n",
503 arizona_hpdet_c_ranges[range].min,
504 arizona_hpdet_c_ranges[range].max);
505 regmap_update_bits(arizona->regmap,
506 ARIZONA_HEADPHONE_DETECT_1,
507 ARIZONA_HP_IMPEDANCE_RANGE_MASK,
508 range <<
509 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
510 return -EAGAIN;
511 }
512
513 if (range && (val < arizona_hpdet_c_ranges[range].min)) {
514 dev_dbg(arizona->dev, "Reporting range boundary %d\n",
515 arizona_hpdet_c_ranges[range].min);
516 val = arizona_hpdet_c_ranges[range].min;
517 }
518 break;
519
520 default:
521 dev_warn(arizona->dev, "Unknown HPDET IP revision %d\n",
522 info->hpdet_ip_version);
523 return -EINVAL;
524 }
525
526 dev_dbg(arizona->dev, "HP impedance %d ohms\n", val);
527 return val;
528}
529
530static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading,
531 bool *mic)
532{
533 struct arizona *arizona = info->arizona;
534 int id_gpio = arizona->pdata.hpdet_id_gpio;
535
536 if (!arizona->pdata.hpdet_acc_id)
537 return 0;
538
539 /*
540 * If we're using HPDET for accessory identification we need
541 * to take multiple measurements, step through them in sequence.
542 */
543 info->hpdet_res[info->num_hpdet_res++] = *reading;
544
545 /* Only check the mic directly if we didn't already ID it */
546 if (id_gpio && info->num_hpdet_res == 1) {
547 dev_dbg(arizona->dev, "Measuring mic\n");
548
549 regmap_update_bits(arizona->regmap,
550 ARIZONA_ACCESSORY_DETECT_MODE_1,
551 ARIZONA_ACCDET_MODE_MASK |
552 ARIZONA_ACCDET_SRC,
553 ARIZONA_ACCDET_MODE_HPR |
554 info->micd_modes[0].src);
555
556 gpio_set_value_cansleep(id_gpio, 1);
557
558 regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
559 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
560 return -EAGAIN;
561 }
562
563 /* OK, got both. Now, compare... */
564 dev_dbg(arizona->dev, "HPDET measured %d %d\n",
565 info->hpdet_res[0], info->hpdet_res[1]);
566
567 /* Take the headphone impedance for the main report */
568 *reading = info->hpdet_res[0];
569
570 /* Sometimes we get false readings due to slow insert */
571 if (*reading >= ARIZONA_HPDET_MAX && !info->hpdet_retried) {
572 dev_dbg(arizona->dev, "Retrying high impedance\n");
573 info->num_hpdet_res = 0;
574 info->hpdet_retried = true;
575 arizona_start_hpdet_acc_id(info);
576 pm_runtime_put(info->dev);
577 return -EAGAIN;
578 }
579
580 /*
581 * If we measure the mic as high impedance
582 */
583 if (!id_gpio || info->hpdet_res[1] > 50) {
584 dev_dbg(arizona->dev, "Detected mic\n");
585 *mic = true;
586 info->detecting = true;
587 } else {
588 dev_dbg(arizona->dev, "Detected headphone\n");
589 }
590
591 /* Make sure everything is reset back to the real polarity */
592 regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
593 ARIZONA_ACCDET_SRC, info->micd_modes[0].src);
594
595 return 0;
596}
597
598static irqreturn_t arizona_hpdet_irq(int irq, void *data)
599{
600 struct arizona_extcon_info *info = data;
601 struct arizona *arizona = info->arizona;
602 int id_gpio = arizona->pdata.hpdet_id_gpio;
603 unsigned int report = EXTCON_JACK_HEADPHONE;
604 int ret, reading;
605 bool mic = false;
606
607 mutex_lock(&info->lock);
608
609 /* If we got a spurious IRQ for some reason then ignore it */
610 if (!info->hpdet_active) {
611 dev_warn(arizona->dev, "Spurious HPDET IRQ\n");
612 mutex_unlock(&info->lock);
613 return IRQ_NONE;
614 }
615
616 /* If the cable was removed while measuring ignore the result */
617 ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
618 if (ret < 0) {
619 dev_err(arizona->dev, "Failed to check cable state: %d\n",
620 ret);
621 goto out;
622 } else if (!ret) {
623 dev_dbg(arizona->dev, "Ignoring HPDET for removed cable\n");
624 goto done;
625 }
626
627 ret = arizona_hpdet_read(info);
628 if (ret == -EAGAIN)
629 goto out;
630 else if (ret < 0)
631 goto done;
632 reading = ret;
633
634 /* Reset back to starting range */
635 regmap_update_bits(arizona->regmap,
636 ARIZONA_HEADPHONE_DETECT_1,
637 ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
638 0);
639
640 ret = arizona_hpdet_do_id(info, &reading, &mic);
641 if (ret == -EAGAIN)
642 goto out;
643 else if (ret < 0)
644 goto done;
645
646 /* Report high impedence cables as line outputs */
647 if (reading >= 5000)
648 report = EXTCON_JACK_LINE_OUT;
649 else
650 report = EXTCON_JACK_HEADPHONE;
651
652 ret = extcon_set_state_sync(info->edev, report, true);
653 if (ret != 0)
654 dev_err(arizona->dev, "Failed to report HP/line: %d\n",
655 ret);
656
657done:
658 /* Reset back to starting range */
659 regmap_update_bits(arizona->regmap,
660 ARIZONA_HEADPHONE_DETECT_1,
661 ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
662 0);
663
664 arizona_extcon_hp_clamp(info, false);
665
666 if (id_gpio)
667 gpio_set_value_cansleep(id_gpio, 0);
668
669 /* If we have a mic then reenable MICDET */
670 if (mic || info->mic)
671 arizona_start_mic(info);
672
673 if (info->hpdet_active) {
674 pm_runtime_put_autosuspend(info->dev);
675 info->hpdet_active = false;
676 }
677
678 info->hpdet_done = true;
679
680out:
681 mutex_unlock(&info->lock);
682
683 return IRQ_HANDLED;
684}
685
686static void arizona_identify_headphone(struct arizona_extcon_info *info)
687{
688 struct arizona *arizona = info->arizona;
689 int ret;
690
691 if (info->hpdet_done)
692 return;
693
694 dev_dbg(arizona->dev, "Starting HPDET\n");
695
696 /* Make sure we keep the device enabled during the measurement */
697 pm_runtime_get(info->dev);
698
699 info->hpdet_active = true;
700
701 arizona_stop_mic(info);
702
703 arizona_extcon_hp_clamp(info, true);
704
705 ret = regmap_update_bits(arizona->regmap,
706 ARIZONA_ACCESSORY_DETECT_MODE_1,
707 ARIZONA_ACCDET_MODE_MASK,
708 arizona->pdata.hpdet_channel);
709 if (ret != 0) {
710 dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
711 goto err;
712 }
713
714 ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
715 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
716 if (ret != 0) {
717 dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n",
718 ret);
719 goto err;
720 }
721
722 return;
723
724err:
725 arizona_extcon_hp_clamp(info, false);
726 pm_runtime_put_autosuspend(info->dev);
727
728 /* Just report headphone */
729 ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
730 if (ret != 0)
731 dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
732
733 if (info->mic)
734 arizona_start_mic(info);
735
736 info->hpdet_active = false;
737}
738
739static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
740{
741 struct arizona *arizona = info->arizona;
742 int hp_reading = 32;
743 bool mic;
744 int ret;
745
746 dev_dbg(arizona->dev, "Starting identification via HPDET\n");
747
748 /* Make sure we keep the device enabled during the measurement */
749 pm_runtime_get_sync(info->dev);
750
751 info->hpdet_active = true;
752
753 arizona_extcon_hp_clamp(info, true);
754
755 ret = regmap_update_bits(arizona->regmap,
756 ARIZONA_ACCESSORY_DETECT_MODE_1,
757 ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
758 info->micd_modes[0].src |
759 arizona->pdata.hpdet_channel);
760 if (ret != 0) {
761 dev_err(arizona->dev, "Failed to set HPDET mode: %d\n", ret);
762 goto err;
763 }
764
765 if (arizona->pdata.hpdet_acc_id_line) {
766 ret = regmap_update_bits(arizona->regmap,
767 ARIZONA_HEADPHONE_DETECT_1,
768 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
769 if (ret != 0) {
770 dev_err(arizona->dev,
771 "Can't start HPDETL measurement: %d\n",
772 ret);
773 goto err;
774 }
775 } else {
776 arizona_hpdet_do_id(info, &hp_reading, &mic);
777 }
778
779 return;
780
781err:
782 /* Just report headphone */
783 ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
784 if (ret != 0)
785 dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
786
787 info->hpdet_active = false;
788}
789
790static void arizona_micd_timeout_work(struct work_struct *work)
791{
792 struct arizona_extcon_info *info = container_of(work,
793 struct arizona_extcon_info,
794 micd_timeout_work.work);
795
796 mutex_lock(&info->lock);
797
798 dev_dbg(info->arizona->dev, "MICD timed out, reporting HP\n");
799
800 info->detecting = false;
801
802 arizona_identify_headphone(info);
803
804 mutex_unlock(&info->lock);
805}
806
807static int arizona_micd_adc_read(struct arizona_extcon_info *info)
808{
809 struct arizona *arizona = info->arizona;
810 unsigned int val;
811 int ret;
812
813 /* Must disable MICD before we read the ADCVAL */
814 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
815 ARIZONA_MICD_ENA, 0);
816
817 ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_4, &val);
818 if (ret != 0) {
819 dev_err(arizona->dev,
820 "Failed to read MICDET_ADCVAL: %d\n", ret);
821 return ret;
822 }
823
824 dev_dbg(arizona->dev, "MICDET_ADCVAL: %x\n", val);
825
826 val &= ARIZONA_MICDET_ADCVAL_MASK;
827 if (val < ARRAY_SIZE(arizona_micd_levels))
828 val = arizona_micd_levels[val];
829 else
830 val = INT_MAX;
831
832 if (val <= QUICK_HEADPHONE_MAX_OHM)
833 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_0;
834 else if (val <= MICROPHONE_MIN_OHM)
835 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_1;
836 else if (val <= MICROPHONE_MAX_OHM)
837 val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_8;
838 else
839 val = ARIZONA_MICD_LVL_8;
840
841 return val;
842}
843
844static int arizona_micd_read(struct arizona_extcon_info *info)
845{
846 struct arizona *arizona = info->arizona;
847 unsigned int val = 0;
848 int ret, i;
849
850 for (i = 0; i < 10 && !(val & MICD_LVL_0_TO_8); i++) {
851 ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
852 if (ret != 0) {
853 dev_err(arizona->dev,
854 "Failed to read MICDET: %d\n", ret);
855 return ret;
856 }
857
858 dev_dbg(arizona->dev, "MICDET: %x\n", val);
859
860 if (!(val & ARIZONA_MICD_VALID)) {
861 dev_warn(arizona->dev,
862 "Microphone detection state invalid\n");
863 return -EINVAL;
864 }
865 }
866
867 if (i == 10 && !(val & MICD_LVL_0_TO_8)) {
868 dev_err(arizona->dev, "Failed to get valid MICDET value\n");
869 return -EINVAL;
870 }
871
872 return val;
873}
874
875static int arizona_micdet_reading(void *priv)
876{
877 struct arizona_extcon_info *info = priv;
878 struct arizona *arizona = info->arizona;
879 int ret, val;
880
881 if (info->detecting && arizona->pdata.micd_software_compare)
882 ret = arizona_micd_adc_read(info);
883 else
884 ret = arizona_micd_read(info);
885 if (ret < 0)
886 return ret;
887
888 val = ret;
889
890 /* Due to jack detect this should never happen */
891 if (!(val & ARIZONA_MICD_STS)) {
892 dev_warn(arizona->dev, "Detected open circuit\n");
893 info->mic = false;
894 info->detecting = false;
895 arizona_identify_headphone(info);
896 return 0;
897 }
898
899 /* If we got a high impedence we should have a headset, report it. */
900 if (val & ARIZONA_MICD_LVL_8) {
901 info->mic = true;
902 info->detecting = false;
903
904 arizona_identify_headphone(info);
905
906 ret = extcon_set_state_sync(info->edev,
907 EXTCON_JACK_MICROPHONE, true);
908 if (ret != 0)
909 dev_err(arizona->dev, "Headset report failed: %d\n",
910 ret);
911
912 /* Don't need to regulate for button detection */
913 ret = regulator_allow_bypass(info->micvdd, true);
914 if (ret != 0) {
915 dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
916 ret);
917 }
918
919 return 0;
920 }
921
922 /* If we detected a lower impedence during initial startup
923 * then we probably have the wrong polarity, flip it. Don't
924 * do this for the lowest impedences to speed up detection of
925 * plain headphones. If both polarities report a low
926 * impedence then give up and report headphones.
927 */
928 if (val & MICD_LVL_1_TO_7) {
929 if (info->jack_flips >= info->micd_num_modes * 10) {
930 dev_dbg(arizona->dev, "Detected HP/line\n");
931
932 info->detecting = false;
933
934 arizona_identify_headphone(info);
935 } else {
936 info->micd_mode++;
937 if (info->micd_mode == info->micd_num_modes)
938 info->micd_mode = 0;
939 arizona_extcon_set_mode(info, info->micd_mode);
940
941 info->jack_flips++;
942
943 if (arizona->pdata.micd_software_compare)
944 regmap_update_bits(arizona->regmap,
945 ARIZONA_MIC_DETECT_1,
946 ARIZONA_MICD_ENA,
947 ARIZONA_MICD_ENA);
948
949 queue_delayed_work(system_power_efficient_wq,
950 &info->micd_timeout_work,
951 msecs_to_jiffies(arizona->pdata.micd_timeout));
952 }
953
954 return 0;
955 }
956
957 /*
958 * If we're still detecting and we detect a short then we've
959 * got a headphone.
960 */
961 dev_dbg(arizona->dev, "Headphone detected\n");
962 info->detecting = false;
963
964 arizona_identify_headphone(info);
965
966 return 0;
967}
968
969static int arizona_button_reading(void *priv)
970{
971 struct arizona_extcon_info *info = priv;
972 struct arizona *arizona = info->arizona;
973 int val, key, lvl, i;
974
975 val = arizona_micd_read(info);
976 if (val < 0)
977 return val;
978
979 /*
980 * If we're still detecting and we detect a short then we've
981 * got a headphone. Otherwise it's a button press.
982 */
983 if (val & MICD_LVL_0_TO_7) {
984 if (info->mic) {
985 dev_dbg(arizona->dev, "Mic button detected\n");
986
987 lvl = val & ARIZONA_MICD_LVL_MASK;
988 lvl >>= ARIZONA_MICD_LVL_SHIFT;
989
990 for (i = 0; i < info->num_micd_ranges; i++)
991 input_report_key(info->input,
992 info->micd_ranges[i].key, 0);
993
994 if (lvl && ffs(lvl) - 1 < info->num_micd_ranges) {
995 key = info->micd_ranges[ffs(lvl) - 1].key;
996 input_report_key(info->input, key, 1);
997 input_sync(info->input);
998 } else {
999 dev_err(arizona->dev, "Button out of range\n");
1000 }
1001 } else {
1002 dev_warn(arizona->dev, "Button with no mic: %x\n",
1003 val);
1004 }
1005 } else {
1006 dev_dbg(arizona->dev, "Mic button released\n");
1007 for (i = 0; i < info->num_micd_ranges; i++)
1008 input_report_key(info->input,
1009 info->micd_ranges[i].key, 0);
1010 input_sync(info->input);
1011 arizona_extcon_pulse_micbias(info);
1012 }
1013
1014 return 0;
1015}
1016
1017static void arizona_micd_detect(struct work_struct *work)
1018{
1019 struct arizona_extcon_info *info = container_of(work,
1020 struct arizona_extcon_info,
1021 micd_detect_work.work);
1022 struct arizona *arizona = info->arizona;
1023 int ret;
1024
1025 cancel_delayed_work_sync(&info->micd_timeout_work);
1026
1027 mutex_lock(&info->lock);
1028
1029 /* If the cable was removed while measuring ignore the result */
1030 ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
1031 if (ret < 0) {
1032 dev_err(arizona->dev, "Failed to check cable state: %d\n",
1033 ret);
1034 mutex_unlock(&info->lock);
1035 return;
1036 } else if (!ret) {
1037 dev_dbg(arizona->dev, "Ignoring MICDET for removed cable\n");
1038 mutex_unlock(&info->lock);
1039 return;
1040 }
1041
1042 if (info->detecting)
1043 arizona_micdet_reading(info);
1044 else
1045 arizona_button_reading(info);
1046
1047 pm_runtime_mark_last_busy(info->dev);
1048 mutex_unlock(&info->lock);
1049}
1050
1051static irqreturn_t arizona_micdet(int irq, void *data)
1052{
1053 struct arizona_extcon_info *info = data;
1054 struct arizona *arizona = info->arizona;
1055 int debounce = arizona->pdata.micd_detect_debounce;
1056
1057 cancel_delayed_work_sync(&info->micd_detect_work);
1058 cancel_delayed_work_sync(&info->micd_timeout_work);
1059
1060 mutex_lock(&info->lock);
1061 if (!info->detecting)
1062 debounce = 0;
1063 mutex_unlock(&info->lock);
1064
1065 if (debounce)
1066 queue_delayed_work(system_power_efficient_wq,
1067 &info->micd_detect_work,
1068 msecs_to_jiffies(debounce));
1069 else
1070 arizona_micd_detect(&info->micd_detect_work.work);
1071
1072 return IRQ_HANDLED;
1073}
1074
1075static void arizona_hpdet_work(struct work_struct *work)
1076{
1077 struct arizona_extcon_info *info = container_of(work,
1078 struct arizona_extcon_info,
1079 hpdet_work.work);
1080
1081 mutex_lock(&info->lock);
1082 arizona_start_hpdet_acc_id(info);
1083 mutex_unlock(&info->lock);
1084}
1085
1086static int arizona_hpdet_wait(struct arizona_extcon_info *info)
1087{
1088 struct arizona *arizona = info->arizona;
1089 unsigned int val;
1090 int i, ret;
1091
1092 for (i = 0; i < ARIZONA_HPDET_WAIT_COUNT; i++) {
1093 ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2,
1094 &val);
1095 if (ret) {
1096 dev_err(arizona->dev,
1097 "Failed to read HPDET state: %d\n", ret);
1098 return ret;
1099 }
1100
1101 switch (info->hpdet_ip_version) {
1102 case 0:
1103 if (val & ARIZONA_HP_DONE)
1104 return 0;
1105 break;
1106 default:
1107 if (val & ARIZONA_HP_DONE_B)
1108 return 0;
1109 break;
1110 }
1111
1112 msleep(ARIZONA_HPDET_WAIT_DELAY_MS);
1113 }
1114
1115 dev_warn(arizona->dev, "HPDET did not appear to complete\n");
1116
1117 return -ETIMEDOUT;
1118}
1119
1120static irqreturn_t arizona_jackdet(int irq, void *data)
1121{
1122 struct arizona_extcon_info *info = data;
1123 struct arizona *arizona = info->arizona;
1124 unsigned int val, present, mask;
1125 bool cancelled_hp, cancelled_mic;
1126 int ret, i;
1127
1128 cancelled_hp = cancel_delayed_work_sync(&info->hpdet_work);
1129 cancelled_mic = cancel_delayed_work_sync(&info->micd_timeout_work);
1130
1131 pm_runtime_get_sync(info->dev);
1132
1133 mutex_lock(&info->lock);
1134
1135 if (info->micd_clamp) {
1136 mask = ARIZONA_MICD_CLAMP_STS;
1137 present = 0;
1138 } else {
1139 mask = ARIZONA_JD1_STS;
1140 if (arizona->pdata.jd_invert)
1141 present = 0;
1142 else
1143 present = ARIZONA_JD1_STS;
1144 }
1145
1146 ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
1147 if (ret != 0) {
1148 dev_err(arizona->dev, "Failed to read jackdet status: %d\n",
1149 ret);
1150 mutex_unlock(&info->lock);
1151 pm_runtime_put_autosuspend(info->dev);
1152 return IRQ_NONE;
1153 }
1154
1155 val &= mask;
1156 if (val == info->last_jackdet) {
1157 dev_dbg(arizona->dev, "Suppressing duplicate JACKDET\n");
1158 if (cancelled_hp)
1159 queue_delayed_work(system_power_efficient_wq,
1160 &info->hpdet_work,
1161 msecs_to_jiffies(HPDET_DEBOUNCE));
1162
1163 if (cancelled_mic) {
1164 int micd_timeout = arizona->pdata.micd_timeout;
1165
1166 queue_delayed_work(system_power_efficient_wq,
1167 &info->micd_timeout_work,
1168 msecs_to_jiffies(micd_timeout));
1169 }
1170
1171 goto out;
1172 }
1173 info->last_jackdet = val;
1174
1175 if (info->last_jackdet == present) {
1176 dev_dbg(arizona->dev, "Detected jack\n");
1177 ret = extcon_set_state_sync(info->edev,
1178 EXTCON_MECHANICAL, true);
1179
1180 if (ret != 0)
1181 dev_err(arizona->dev, "Mechanical report failed: %d\n",
1182 ret);
1183
1184 info->detecting = true;
1185 info->mic = false;
1186 info->jack_flips = 0;
1187
1188 if (!arizona->pdata.hpdet_acc_id) {
1189 arizona_start_mic(info);
1190 } else {
1191 queue_delayed_work(system_power_efficient_wq,
1192 &info->hpdet_work,
1193 msecs_to_jiffies(HPDET_DEBOUNCE));
1194 }
1195
1196 if (info->micd_clamp || !arizona->pdata.jd_invert)
1197 regmap_update_bits(arizona->regmap,
1198 ARIZONA_JACK_DETECT_DEBOUNCE,
1199 ARIZONA_MICD_CLAMP_DB |
1200 ARIZONA_JD1_DB, 0);
1201 } else {
1202 dev_dbg(arizona->dev, "Detected jack removal\n");
1203
1204 arizona_stop_mic(info);
1205
1206 info->num_hpdet_res = 0;
1207 for (i = 0; i < ARRAY_SIZE(info->hpdet_res); i++)
1208 info->hpdet_res[i] = 0;
1209 info->mic = false;
1210 info->hpdet_done = false;
1211 info->hpdet_retried = false;
1212
1213 for (i = 0; i < info->num_micd_ranges; i++)
1214 input_report_key(info->input,
1215 info->micd_ranges[i].key, 0);
1216 input_sync(info->input);
1217
1218 for (i = 0; i < ARRAY_SIZE(arizona_cable) - 1; i++) {
1219 ret = extcon_set_state_sync(info->edev,
1220 arizona_cable[i], false);
1221 if (ret != 0)
1222 dev_err(arizona->dev,
1223 "Removal report failed: %d\n", ret);
1224 }
1225
1226 /*
1227 * If the jack was removed during a headphone detection we
1228 * need to wait for the headphone detection to finish, as
1229 * it can not be aborted. We don't want to be able to start
1230 * a new headphone detection from a fresh insert until this
1231 * one is finished.
1232 */
1233 arizona_hpdet_wait(info);
1234
1235 regmap_update_bits(arizona->regmap,
1236 ARIZONA_JACK_DETECT_DEBOUNCE,
1237 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB,
1238 ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB);
1239 }
1240
1241out:
1242 /* Clear trig_sts to make sure DCVDD is not forced up */
1243 regmap_write(arizona->regmap, ARIZONA_AOD_WKUP_AND_TRIG,
1244 ARIZONA_MICD_CLAMP_FALL_TRIG_STS |
1245 ARIZONA_MICD_CLAMP_RISE_TRIG_STS |
1246 ARIZONA_JD1_FALL_TRIG_STS |
1247 ARIZONA_JD1_RISE_TRIG_STS);
1248
1249 mutex_unlock(&info->lock);
1250
1251 pm_runtime_mark_last_busy(info->dev);
1252 pm_runtime_put_autosuspend(info->dev);
1253
1254 return IRQ_HANDLED;
1255}
1256
1257/* Map a level onto a slot in the register bank */
1258static void arizona_micd_set_level(struct arizona *arizona, int index,
1259 unsigned int level)
1260{
1261 int reg;
1262 unsigned int mask;
1263
1264 reg = ARIZONA_MIC_DETECT_LEVEL_4 - (index / 2);
1265
1266 if (!(index % 2)) {
1267 mask = 0x3f00;
1268 level <<= 8;
1269 } else {
1270 mask = 0x3f;
1271 }
1272
1273 /* Program the level itself */
1274 regmap_update_bits(arizona->regmap, reg, mask, level);
1275}
1276
1277static int arizona_extcon_get_micd_configs(struct device *dev,
1278 struct arizona *arizona)
1279{
1280 const char * const prop = "wlf,micd-configs";
1281 const int entries_per_config = 3;
1282 struct arizona_micd_config *micd_configs;
1283 int nconfs, ret;
1284 int i, j;
1285 u32 *vals;
1286
1287 nconfs = device_property_count_u32(arizona->dev, prop);
1288 if (nconfs <= 0)
1289 return 0;
1290
1291 vals = kcalloc(nconfs, sizeof(u32), GFP_KERNEL);
1292 if (!vals)
1293 return -ENOMEM;
1294
1295 ret = device_property_read_u32_array(arizona->dev, prop, vals, nconfs);
1296 if (ret < 0)
1297 goto out;
1298
1299 nconfs /= entries_per_config;
1300 micd_configs = devm_kcalloc(dev, nconfs, sizeof(*micd_configs),
1301 GFP_KERNEL);
1302 if (!micd_configs) {
1303 ret = -ENOMEM;
1304 goto out;
1305 }
1306
1307 for (i = 0, j = 0; i < nconfs; ++i) {
1308 micd_configs[i].src = vals[j++] ? ARIZONA_ACCDET_SRC : 0;
1309 micd_configs[i].bias = vals[j++];
1310 micd_configs[i].gpio = vals[j++];
1311 }
1312
1313 arizona->pdata.micd_configs = micd_configs;
1314 arizona->pdata.num_micd_configs = nconfs;
1315
1316out:
1317 kfree(vals);
1318 return ret;
1319}
1320
1321static int arizona_extcon_device_get_pdata(struct device *dev,
1322 struct arizona *arizona)
1323{
1324 struct arizona_pdata *pdata = &arizona->pdata;
1325 unsigned int val = ARIZONA_ACCDET_MODE_HPL;
1326 int ret;
1327
1328 device_property_read_u32(arizona->dev, "wlf,hpdet-channel", &val);
1329 switch (val) {
1330 case ARIZONA_ACCDET_MODE_HPL:
1331 case ARIZONA_ACCDET_MODE_HPR:
1332 pdata->hpdet_channel = val;
1333 break;
1334 default:
1335 dev_err(arizona->dev,
1336 "Wrong wlf,hpdet-channel DT value %d\n", val);
1337 pdata->hpdet_channel = ARIZONA_ACCDET_MODE_HPL;
1338 }
1339
1340 device_property_read_u32(arizona->dev, "wlf,micd-detect-debounce",
1341 &pdata->micd_detect_debounce);
1342
1343 device_property_read_u32(arizona->dev, "wlf,micd-bias-start-time",
1344 &pdata->micd_bias_start_time);
1345
1346 device_property_read_u32(arizona->dev, "wlf,micd-rate",
1347 &pdata->micd_rate);
1348
1349 device_property_read_u32(arizona->dev, "wlf,micd-dbtime",
1350 &pdata->micd_dbtime);
1351
1352 device_property_read_u32(arizona->dev, "wlf,micd-timeout-ms",
1353 &pdata->micd_timeout);
1354
1355 pdata->micd_force_micbias = device_property_read_bool(arizona->dev,
1356 "wlf,micd-force-micbias");
1357
1358 pdata->micd_software_compare = device_property_read_bool(arizona->dev,
1359 "wlf,micd-software-compare");
1360
1361 pdata->jd_invert = device_property_read_bool(arizona->dev,
1362 "wlf,jd-invert");
1363
1364 device_property_read_u32(arizona->dev, "wlf,gpsw", &pdata->gpsw);
1365
1366 pdata->jd_gpio5 = device_property_read_bool(arizona->dev,
1367 "wlf,use-jd2");
1368 pdata->jd_gpio5_nopull = device_property_read_bool(arizona->dev,
1369 "wlf,use-jd2-nopull");
1370
1371 ret = arizona_extcon_get_micd_configs(dev, arizona);
1372 if (ret < 0)
1373 dev_err(arizona->dev, "Failed to read micd configs: %d\n", ret);
1374
1375 return 0;
1376}
1377
1378static int arizona_extcon_probe(struct platform_device *pdev)
1379{
1380 struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
1381 struct arizona_pdata *pdata = &arizona->pdata;
1382 struct arizona_extcon_info *info;
1383 unsigned int val;
1384 unsigned int clamp_mode;
1385 int jack_irq_fall, jack_irq_rise;
1386 int ret, mode, i, j;
1387
1388 if (!arizona->dapm || !arizona->dapm->card)
1389 return -EPROBE_DEFER;
1390
1391 info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
1392 if (!info)
1393 return -ENOMEM;
1394
1395 if (!dev_get_platdata(arizona->dev))
1396 arizona_extcon_device_get_pdata(&pdev->dev, arizona);
1397
1398 info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
1399 if (IS_ERR(info->micvdd)) {
1400 ret = PTR_ERR(info->micvdd);
1401 dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
1402 return ret;
1403 }
1404
1405 mutex_init(&info->lock);
1406 info->arizona = arizona;
1407 info->dev = &pdev->dev;
1408 info->last_jackdet = ~(ARIZONA_MICD_CLAMP_STS | ARIZONA_JD1_STS);
1409 INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work);
1410 INIT_DELAYED_WORK(&info->micd_detect_work, arizona_micd_detect);
1411 INIT_DELAYED_WORK(&info->micd_timeout_work, arizona_micd_timeout_work);
1412 platform_set_drvdata(pdev, info);
1413
1414 switch (arizona->type) {
1415 case WM5102:
1416 switch (arizona->rev) {
1417 case 0:
1418 info->micd_reva = true;
1419 break;
1420 default:
1421 info->micd_clamp = true;
1422 info->hpdet_ip_version = 1;
1423 break;
1424 }
1425 break;
1426 case WM5110:
1427 case WM8280:
1428 switch (arizona->rev) {
1429 case 0 ... 2:
1430 break;
1431 default:
1432 info->micd_clamp = true;
1433 info->hpdet_ip_version = 2;
1434 break;
1435 }
1436 break;
1437 case WM8998:
1438 case WM1814:
1439 info->micd_clamp = true;
1440 info->hpdet_ip_version = 2;
1441 break;
1442 default:
1443 break;
1444 }
1445
1446 info->edev = devm_extcon_dev_allocate(&pdev->dev, arizona_cable);
1447 if (IS_ERR(info->edev)) {
1448 dev_err(&pdev->dev, "failed to allocate extcon device\n");
1449 return -ENOMEM;
1450 }
1451
1452 ret = devm_extcon_dev_register(&pdev->dev, info->edev);
1453 if (ret < 0) {
1454 dev_err(arizona->dev, "extcon_dev_register() failed: %d\n",
1455 ret);
1456 return ret;
1457 }
1458
1459 info->input = devm_input_allocate_device(&pdev->dev);
1460 if (!info->input) {
1461 dev_err(arizona->dev, "Can't allocate input dev\n");
1462 ret = -ENOMEM;
1463 return ret;
1464 }
1465
1466 info->input->name = "Headset";
1467 info->input->phys = "arizona/extcon";
1468
1469 if (!pdata->micd_timeout)
1470 pdata->micd_timeout = DEFAULT_MICD_TIMEOUT;
1471
1472 if (pdata->num_micd_configs) {
1473 info->micd_modes = pdata->micd_configs;
1474 info->micd_num_modes = pdata->num_micd_configs;
1475 } else {
1476 info->micd_modes = micd_default_modes;
1477 info->micd_num_modes = ARRAY_SIZE(micd_default_modes);
1478 }
1479
1480 if (arizona->pdata.gpsw > 0)
1481 regmap_update_bits(arizona->regmap, ARIZONA_GP_SWITCH_1,
1482 ARIZONA_SW1_MODE_MASK, arizona->pdata.gpsw);
1483
1484 if (pdata->micd_pol_gpio > 0) {
1485 if (info->micd_modes[0].gpio)
1486 mode = GPIOF_OUT_INIT_HIGH;
1487 else
1488 mode = GPIOF_OUT_INIT_LOW;
1489
1490 ret = devm_gpio_request_one(&pdev->dev, pdata->micd_pol_gpio,
1491 mode, "MICD polarity");
1492 if (ret != 0) {
1493 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
1494 pdata->micd_pol_gpio, ret);
1495 return ret;
1496 }
1497
1498 info->micd_pol_gpio = gpio_to_desc(pdata->micd_pol_gpio);
1499 } else {
1500 if (info->micd_modes[0].gpio)
1501 mode = GPIOD_OUT_HIGH;
1502 else
1503 mode = GPIOD_OUT_LOW;
1504
1505 /* We can't use devm here because we need to do the get
1506 * against the MFD device, as that is where the of_node
1507 * will reside, but if we devm against that the GPIO
1508 * will not be freed if the extcon driver is unloaded.
1509 */
1510 info->micd_pol_gpio = gpiod_get_optional(arizona->dev,
1511 "wlf,micd-pol",
1512 GPIOD_OUT_LOW);
1513 if (IS_ERR(info->micd_pol_gpio)) {
1514 ret = PTR_ERR(info->micd_pol_gpio);
1515 dev_err(arizona->dev,
1516 "Failed to get microphone polarity GPIO: %d\n",
1517 ret);
1518 return ret;
1519 }
1520 }
1521
1522 if (arizona->pdata.hpdet_id_gpio > 0) {
1523 ret = devm_gpio_request_one(&pdev->dev,
1524 arizona->pdata.hpdet_id_gpio,
1525 GPIOF_OUT_INIT_LOW,
1526 "HPDET");
1527 if (ret != 0) {
1528 dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
1529 arizona->pdata.hpdet_id_gpio, ret);
1530 goto err_gpio;
1531 }
1532 }
1533
1534 if (arizona->pdata.micd_bias_start_time)
1535 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1536 ARIZONA_MICD_BIAS_STARTTIME_MASK,
1537 arizona->pdata.micd_bias_start_time
1538 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT);
1539
1540 if (arizona->pdata.micd_rate)
1541 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1542 ARIZONA_MICD_RATE_MASK,
1543 arizona->pdata.micd_rate
1544 << ARIZONA_MICD_RATE_SHIFT);
1545
1546 switch (arizona->pdata.micd_dbtime) {
1547 case MICD_DBTIME_FOUR_READINGS:
1548 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1549 ARIZONA_MICD_DBTIME_MASK,
1550 ARIZONA_MICD_DBTIME);
1551 break;
1552 case MICD_DBTIME_TWO_READINGS:
1553 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
1554 ARIZONA_MICD_DBTIME_MASK, 0);
1555 break;
1556 default:
1557 break;
1558 }
1559
1560 BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) <
1561 ARIZONA_NUM_MICD_BUTTON_LEVELS);
1562
1563 if (arizona->pdata.num_micd_ranges) {
1564 info->micd_ranges = pdata->micd_ranges;
1565 info->num_micd_ranges = pdata->num_micd_ranges;
1566 } else {
1567 info->micd_ranges = micd_default_ranges;
1568 info->num_micd_ranges = ARRAY_SIZE(micd_default_ranges);
1569 }
1570
1571 if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_RANGE) {
1572 dev_err(arizona->dev, "Too many MICD ranges: %d\n",
1573 arizona->pdata.num_micd_ranges);
1574 }
1575
1576 if (info->num_micd_ranges > 1) {
1577 for (i = 1; i < info->num_micd_ranges; i++) {
1578 if (info->micd_ranges[i - 1].max >
1579 info->micd_ranges[i].max) {
1580 dev_err(arizona->dev,
1581 "MICD ranges must be sorted\n");
1582 ret = -EINVAL;
1583 goto err_gpio;
1584 }
1585 }
1586 }
1587
1588 /* Disable all buttons by default */
1589 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
1590 ARIZONA_MICD_LVL_SEL_MASK, 0x81);
1591
1592 /* Set up all the buttons the user specified */
1593 for (i = 0; i < info->num_micd_ranges; i++) {
1594 for (j = 0; j < ARIZONA_NUM_MICD_BUTTON_LEVELS; j++)
1595 if (arizona_micd_levels[j] >= info->micd_ranges[i].max)
1596 break;
1597
1598 if (j == ARIZONA_NUM_MICD_BUTTON_LEVELS) {
1599 dev_err(arizona->dev, "Unsupported MICD level %d\n",
1600 info->micd_ranges[i].max);
1601 ret = -EINVAL;
1602 goto err_gpio;
1603 }
1604
1605 dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n",
1606 arizona_micd_levels[j], i);
1607
1608 arizona_micd_set_level(arizona, i, j);
1609 input_set_capability(info->input, EV_KEY,
1610 info->micd_ranges[i].key);
1611
1612 /* Enable reporting of that range */
1613 regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
1614 1 << i, 1 << i);
1615 }
1616
1617 /* Set all the remaining keys to a maximum */
1618 for (; i < ARIZONA_MAX_MICD_RANGE; i++)
1619 arizona_micd_set_level(arizona, i, 0x3f);
1620
1621 /*
1622 * If we have a clamp use it, activating in conjunction with
1623 * GPIO5 if that is connected for jack detect operation.
1624 */
1625 if (info->micd_clamp) {
1626 if (arizona->pdata.jd_gpio5) {
1627 /* Put the GPIO into input mode with optional pull */
1628 val = 0xc101;
1629 if (arizona->pdata.jd_gpio5_nopull)
1630 val &= ~ARIZONA_GPN_PU;
1631
1632 regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL,
1633 val);
1634
1635 if (arizona->pdata.jd_invert)
1636 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH_GP5H;
1637 else
1638 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL_GP5H;
1639 } else {
1640 if (arizona->pdata.jd_invert)
1641 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH;
1642 else
1643 clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL;
1644 }
1645
1646 regmap_update_bits(arizona->regmap,
1647 ARIZONA_MICD_CLAMP_CONTROL,
1648 ARIZONA_MICD_CLAMP_MODE_MASK, clamp_mode);
1649
1650 regmap_update_bits(arizona->regmap,
1651 ARIZONA_JACK_DETECT_DEBOUNCE,
1652 ARIZONA_MICD_CLAMP_DB,
1653 ARIZONA_MICD_CLAMP_DB);
1654 }
1655
1656 arizona_extcon_set_mode(info, 0);
1657
1658 pm_runtime_enable(&pdev->dev);
1659 pm_runtime_idle(&pdev->dev);
1660 pm_runtime_get_sync(&pdev->dev);
1661
1662 if (info->micd_clamp) {
1663 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
1664 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
1665 } else {
1666 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
1667 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
1668 }
1669
1670 ret = arizona_request_irq(arizona, jack_irq_rise,
1671 "JACKDET rise", arizona_jackdet, info);
1672 if (ret != 0) {
1673 dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
1674 ret);
1675 goto err_pm;
1676 }
1677
1678 ret = arizona_set_irq_wake(arizona, jack_irq_rise, 1);
1679 if (ret != 0) {
1680 dev_err(&pdev->dev, "Failed to set JD rise IRQ wake: %d\n",
1681 ret);
1682 goto err_rise;
1683 }
1684
1685 ret = arizona_request_irq(arizona, jack_irq_fall,
1686 "JACKDET fall", arizona_jackdet, info);
1687 if (ret != 0) {
1688 dev_err(&pdev->dev, "Failed to get JD fall IRQ: %d\n", ret);
1689 goto err_rise_wake;
1690 }
1691
1692 ret = arizona_set_irq_wake(arizona, jack_irq_fall, 1);
1693 if (ret != 0) {
1694 dev_err(&pdev->dev, "Failed to set JD fall IRQ wake: %d\n",
1695 ret);
1696 goto err_fall;
1697 }
1698
1699 ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET,
1700 "MICDET", arizona_micdet, info);
1701 if (ret != 0) {
1702 dev_err(&pdev->dev, "Failed to get MICDET IRQ: %d\n", ret);
1703 goto err_fall_wake;
1704 }
1705
1706 ret = arizona_request_irq(arizona, ARIZONA_IRQ_HPDET,
1707 "HPDET", arizona_hpdet_irq, info);
1708 if (ret != 0) {
1709 dev_err(&pdev->dev, "Failed to get HPDET IRQ: %d\n", ret);
1710 goto err_micdet;
1711 }
1712
1713 arizona_clk32k_enable(arizona);
1714 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE,
1715 ARIZONA_JD1_DB, ARIZONA_JD1_DB);
1716 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1717 ARIZONA_JD1_ENA, ARIZONA_JD1_ENA);
1718
1719 ret = regulator_allow_bypass(info->micvdd, true);
1720 if (ret != 0)
1721 dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n",
1722 ret);
1723
1724 ret = input_register_device(info->input);
1725 if (ret) {
1726 dev_err(&pdev->dev, "Can't register input device: %d\n", ret);
1727 goto err_hpdet;
1728 }
1729
1730 pm_runtime_put(&pdev->dev);
1731
1732 return 0;
1733
1734err_hpdet:
1735 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
1736err_micdet:
1737 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
1738err_fall_wake:
1739 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1740err_fall:
1741 arizona_free_irq(arizona, jack_irq_fall, info);
1742err_rise_wake:
1743 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1744err_rise:
1745 arizona_free_irq(arizona, jack_irq_rise, info);
1746err_pm:
1747 pm_runtime_put(&pdev->dev);
1748 pm_runtime_disable(&pdev->dev);
1749err_gpio:
1750 gpiod_put(info->micd_pol_gpio);
1751 return ret;
1752}
1753
1754static int arizona_extcon_remove(struct platform_device *pdev)
1755{
1756 struct arizona_extcon_info *info = platform_get_drvdata(pdev);
1757 struct arizona *arizona = info->arizona;
1758 int jack_irq_rise, jack_irq_fall;
1759 bool change;
1760 int ret;
1761
1762 ret = regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
1763 ARIZONA_MICD_ENA, 0,
1764 &change);
1765 if (ret < 0) {
1766 dev_err(&pdev->dev, "Failed to disable micd on remove: %d\n",
1767 ret);
1768 } else if (change) {
1769 regulator_disable(info->micvdd);
1770 pm_runtime_put(info->dev);
1771 }
1772
1773 gpiod_put(info->micd_pol_gpio);
1774
1775 pm_runtime_disable(&pdev->dev);
1776
1777 regmap_update_bits(arizona->regmap,
1778 ARIZONA_MICD_CLAMP_CONTROL,
1779 ARIZONA_MICD_CLAMP_MODE_MASK, 0);
1780
1781 if (info->micd_clamp) {
1782 jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
1783 jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
1784 } else {
1785 jack_irq_rise = ARIZONA_IRQ_JD_RISE;
1786 jack_irq_fall = ARIZONA_IRQ_JD_FALL;
1787 }
1788
1789 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1790 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1791 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
1792 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
1793 arizona_free_irq(arizona, jack_irq_rise, info);
1794 arizona_free_irq(arizona, jack_irq_fall, info);
1795 cancel_delayed_work_sync(&info->hpdet_work);
1796 regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
1797 ARIZONA_JD1_ENA, 0);
1798 arizona_clk32k_disable(arizona);
1799
1800 return 0;
1801}
1802
1803static struct platform_driver arizona_extcon_driver = {
1804 .driver = {
1805 .name = "arizona-extcon",
1806 },
1807 .probe = arizona_extcon_probe,
1808 .remove = arizona_extcon_remove,
1809};
1810
1811module_platform_driver(arizona_extcon_driver);
1812
1813MODULE_DESCRIPTION("Arizona Extcon driver");
1814MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1815MODULE_LICENSE("GPL");
1816MODULE_ALIAS("platform:extcon-arizona");
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
73struct 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
116static const struct arizona_micd_config micd_default_modes[] = {
117 { ARIZONA_ACCDET_SRC, 1, 0 },
118 { 0, 2, 1 },
119};
120
121static 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
133static 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
141static 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
149static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info);
150
151static 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
236static 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
257static 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
271static 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
296static 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
347static 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
387static 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
399static 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
409static 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
529static 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
599static 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
658done:
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
686out:
687 mutex_unlock(&info->lock);
688
689 return IRQ_HANDLED;
690}
691
692static 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
731err:
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
746static 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
788err:
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
800static 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
819static 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
1003handled:
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
1020static 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
1044static 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
1055static 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
1089static 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
1215out:
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 */
1232static 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
1251static 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
1290out:
1291 kfree(vals);
1292 return ret;
1293}
1294
1295static 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
1352static 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
1705err_hpdet:
1706 arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
1707err_micdet:
1708 arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
1709err_fall_wake:
1710 arizona_set_irq_wake(arizona, jack_irq_fall, 0);
1711err_fall:
1712 arizona_free_irq(arizona, jack_irq_fall, info);
1713err_rise_wake:
1714 arizona_set_irq_wake(arizona, jack_irq_rise, 0);
1715err_rise:
1716 arizona_free_irq(arizona, jack_irq_rise, info);
1717err_gpio:
1718 gpiod_put(info->micd_pol_gpio);
1719err_register:
1720 pm_runtime_disable(&pdev->dev);
1721 return ret;
1722}
1723
1724static 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
1760static 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
1768module_platform_driver(arizona_extcon_driver);
1769
1770MODULE_DESCRIPTION("Arizona Extcon driver");
1771MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1772MODULE_LICENSE("GPL");
1773MODULE_ALIAS("platform:extcon-arizona");