2 * extcon-arizona.c - Extcon driver Wolfson Arizona devices
4 * Copyright (C) 2012 Wolfson Microelectronics plc
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.
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.
17 #include <linux/kernel.h>
18 #include <linux/module.h>
19 #include <linux/i2c.h>
20 #include <linux/slab.h>
21 #include <linux/interrupt.h>
22 #include <linux/err.h>
23 #include <linux/gpio.h>
24 #include <linux/input.h>
25 #include <linux/platform_device.h>
26 #include <linux/pm_runtime.h>
27 #include <linux/regulator/consumer.h>
28 #include <linux/extcon.h>
30 #include <sound/soc.h>
32 #include <linux/mfd/arizona/core.h>
33 #include <linux/mfd/arizona/pdata.h>
34 #include <linux/mfd/arizona/registers.h>
36 #define ARIZONA_NUM_BUTTONS 6
38 #define ARIZONA_ACCDET_MODE_MIC 0
39 #define ARIZONA_ACCDET_MODE_HPL 1
40 #define ARIZONA_ACCDET_MODE_HPR 2
42 struct arizona_extcon_info
{
44 struct arizona
*arizona
;
46 struct regulator
*micvdd
;
47 struct input_dev
*input
;
50 const struct arizona_micd_config
*micd_modes
;
56 struct delayed_work hpdet_work
;
62 unsigned int hpdet_res
[3];
70 struct extcon_dev edev
;
73 static const struct arizona_micd_config micd_default_modes
[] = {
74 { 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT
, 1 },
75 { ARIZONA_ACCDET_SRC
, 1 << ARIZONA_MICD_BIAS_SRC_SHIFT
, 0 },
81 } arizona_lvl_to_key
[ARIZONA_NUM_BUTTONS
] = {
90 #define ARIZONA_CABLE_MECHANICAL 0
91 #define ARIZONA_CABLE_MICROPHONE 1
92 #define ARIZONA_CABLE_HEADPHONE 2
93 #define ARIZONA_CABLE_LINEOUT 3
95 static const char *arizona_cable
[] = {
103 static void arizona_extcon_set_mode(struct arizona_extcon_info
*info
, int mode
)
105 struct arizona
*arizona
= info
->arizona
;
107 if (arizona
->pdata
.micd_pol_gpio
> 0)
108 gpio_set_value_cansleep(arizona
->pdata
.micd_pol_gpio
,
109 info
->micd_modes
[mode
].gpio
);
110 regmap_update_bits(arizona
->regmap
, ARIZONA_MIC_DETECT_1
,
111 ARIZONA_MICD_BIAS_SRC_MASK
,
112 info
->micd_modes
[mode
].bias
);
113 regmap_update_bits(arizona
->regmap
, ARIZONA_ACCESSORY_DETECT_MODE_1
,
114 ARIZONA_ACCDET_SRC
, info
->micd_modes
[mode
].src
);
116 info
->micd_mode
= mode
;
118 dev_dbg(arizona
->dev
, "Set jack polarity to %d\n", mode
);
121 static const char *arizona_extcon_get_micbias(struct arizona_extcon_info
*info
)
123 switch (info
->micd_modes
[0].bias
>> ARIZONA_MICD_BIAS_SRC_SHIFT
) {
135 static void arizona_extcon_pulse_micbias(struct arizona_extcon_info
*info
)
137 struct arizona
*arizona
= info
->arizona
;
138 const char *widget
= arizona_extcon_get_micbias(info
);
139 struct snd_soc_dapm_context
*dapm
= arizona
->dapm
;
142 mutex_lock(&dapm
->card
->dapm_mutex
);
144 ret
= snd_soc_dapm_force_enable_pin(dapm
, widget
);
146 dev_warn(arizona
->dev
, "Failed to enable %s: %d\n",
149 mutex_unlock(&dapm
->card
->dapm_mutex
);
151 snd_soc_dapm_sync(dapm
);
153 if (!arizona
->pdata
.micd_force_micbias
) {
154 mutex_lock(&dapm
->card
->dapm_mutex
);
156 ret
= snd_soc_dapm_disable_pin(arizona
->dapm
, widget
);
158 dev_warn(arizona
->dev
, "Failed to disable %s: %d\n",
161 mutex_unlock(&dapm
->card
->dapm_mutex
);
163 snd_soc_dapm_sync(dapm
);
167 static void arizona_start_mic(struct arizona_extcon_info
*info
)
169 struct arizona
*arizona
= info
->arizona
;
173 /* Microphone detection can't use idle mode */
174 pm_runtime_get(info
->dev
);
176 if (info
->detecting
) {
177 ret
= regulator_allow_bypass(info
->micvdd
, false);
179 dev_err(arizona
->dev
,
180 "Failed to regulate MICVDD: %d\n",
185 ret
= regulator_enable(info
->micvdd
);
187 dev_err(arizona
->dev
, "Failed to enable MICVDD: %d\n",
191 if (info
->micd_reva
) {
192 regmap_write(arizona
->regmap
, 0x80, 0x3);
193 regmap_write(arizona
->regmap
, 0x294, 0);
194 regmap_write(arizona
->regmap
, 0x80, 0x0);
197 regmap_update_bits(arizona
->regmap
,
198 ARIZONA_ACCESSORY_DETECT_MODE_1
,
199 ARIZONA_ACCDET_MODE_MASK
, ARIZONA_ACCDET_MODE_MIC
);
201 arizona_extcon_pulse_micbias(info
);
203 regmap_update_bits_check(arizona
->regmap
, ARIZONA_MIC_DETECT_1
,
204 ARIZONA_MICD_ENA
, ARIZONA_MICD_ENA
,
207 regulator_disable(info
->micvdd
);
208 pm_runtime_put_autosuspend(info
->dev
);
212 static void arizona_stop_mic(struct arizona_extcon_info
*info
)
214 struct arizona
*arizona
= info
->arizona
;
215 const char *widget
= arizona_extcon_get_micbias(info
);
216 struct snd_soc_dapm_context
*dapm
= arizona
->dapm
;
220 regmap_update_bits_check(arizona
->regmap
, ARIZONA_MIC_DETECT_1
,
224 mutex_lock(&dapm
->card
->dapm_mutex
);
226 ret
= snd_soc_dapm_disable_pin(dapm
, widget
);
228 dev_warn(arizona
->dev
,
229 "Failed to disable %s: %d\n",
232 mutex_unlock(&dapm
->card
->dapm_mutex
);
234 snd_soc_dapm_sync(dapm
);
236 if (info
->micd_reva
) {
237 regmap_write(arizona
->regmap
, 0x80, 0x3);
238 regmap_write(arizona
->regmap
, 0x294, 2);
239 regmap_write(arizona
->regmap
, 0x80, 0x0);
242 ret
= regulator_allow_bypass(info
->micvdd
, true);
244 dev_err(arizona
->dev
, "Failed to bypass MICVDD: %d\n",
249 regulator_disable(info
->micvdd
);
250 pm_runtime_mark_last_busy(info
->dev
);
251 pm_runtime_put_autosuspend(info
->dev
);
256 unsigned int factor_a
;
257 unsigned int factor_b
;
258 } arizona_hpdet_b_ranges
[] = {
267 } arizona_hpdet_c_ranges
[] = {
274 static int arizona_hpdet_read(struct arizona_extcon_info
*info
)
276 struct arizona
*arizona
= info
->arizona
;
277 unsigned int val
, range
;
280 ret
= regmap_read(arizona
->regmap
, ARIZONA_HEADPHONE_DETECT_2
, &val
);
282 dev_err(arizona
->dev
, "Failed to read HPDET status: %d\n",
287 switch (info
->hpdet_ip
) {
289 if (!(val
& ARIZONA_HP_DONE
)) {
290 dev_err(arizona
->dev
, "HPDET did not complete: %x\n",
295 val
&= ARIZONA_HP_LVL_MASK
;
299 if (!(val
& ARIZONA_HP_DONE_B
)) {
300 dev_err(arizona
->dev
, "HPDET did not complete: %x\n",
305 ret
= regmap_read(arizona
->regmap
, ARIZONA_HP_DACVAL
, &val
);
307 dev_err(arizona
->dev
, "Failed to read HP value: %d\n",
312 regmap_read(arizona
->regmap
, ARIZONA_HEADPHONE_DETECT_1
,
314 range
= (range
& ARIZONA_HP_IMPEDANCE_RANGE_MASK
)
315 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT
;
317 if (range
< ARRAY_SIZE(arizona_hpdet_b_ranges
) - 1 &&
318 (val
< 100 || val
> 0x3fb)) {
320 dev_dbg(arizona
->dev
, "Moving to HPDET range %d\n",
322 regmap_update_bits(arizona
->regmap
,
323 ARIZONA_HEADPHONE_DETECT_1
,
324 ARIZONA_HP_IMPEDANCE_RANGE_MASK
,
326 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT
);
330 /* If we go out of range report top of range */
331 if (val
< 100 || val
> 0x3fb) {
332 dev_dbg(arizona
->dev
, "Measurement out of range\n");
336 dev_dbg(arizona
->dev
, "HPDET read %d in range %d\n",
339 val
= arizona_hpdet_b_ranges
[range
].factor_b
341 arizona_hpdet_b_ranges
[range
].factor_a
);
345 dev_warn(arizona
->dev
, "Unknown HPDET IP revision %d\n",
348 if (!(val
& ARIZONA_HP_DONE_B
)) {
349 dev_err(arizona
->dev
, "HPDET did not complete: %x\n",
354 val
&= ARIZONA_HP_LVL_B_MASK
;
356 regmap_read(arizona
->regmap
, ARIZONA_HEADPHONE_DETECT_1
,
358 range
= (range
& ARIZONA_HP_IMPEDANCE_RANGE_MASK
)
359 >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT
;
361 /* Skip up or down a range? */
362 if (range
&& (val
< arizona_hpdet_c_ranges
[range
].min
)) {
364 dev_dbg(arizona
->dev
, "Moving to HPDET range %d-%d\n",
365 arizona_hpdet_c_ranges
[range
].min
,
366 arizona_hpdet_c_ranges
[range
].max
);
367 regmap_update_bits(arizona
->regmap
,
368 ARIZONA_HEADPHONE_DETECT_1
,
369 ARIZONA_HP_IMPEDANCE_RANGE_MASK
,
371 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT
);
375 if (range
< ARRAY_SIZE(arizona_hpdet_c_ranges
) - 1 &&
376 (val
>= arizona_hpdet_c_ranges
[range
].max
)) {
378 dev_dbg(arizona
->dev
, "Moving to HPDET range %d-%d\n",
379 arizona_hpdet_c_ranges
[range
].min
,
380 arizona_hpdet_c_ranges
[range
].max
);
381 regmap_update_bits(arizona
->regmap
,
382 ARIZONA_HEADPHONE_DETECT_1
,
383 ARIZONA_HP_IMPEDANCE_RANGE_MASK
,
385 ARIZONA_HP_IMPEDANCE_RANGE_SHIFT
);
390 dev_dbg(arizona
->dev
, "HP impedance %d ohms\n", val
);
394 static int arizona_hpdet_do_id(struct arizona_extcon_info
*info
, int *reading
)
396 struct arizona
*arizona
= info
->arizona
;
397 int id_gpio
= arizona
->pdata
.hpdet_id_gpio
;
400 * If we're using HPDET for accessory identification we need
401 * to take multiple measurements, step through them in sequence.
403 if (arizona
->pdata
.hpdet_acc_id
) {
404 info
->hpdet_res
[info
->num_hpdet_res
++] = *reading
;
407 * If the impedence is too high don't measure the
410 if (info
->num_hpdet_res
== 1 && *reading
>= 45) {
411 dev_dbg(arizona
->dev
, "Skipping ground flip\n");
412 info
->hpdet_res
[info
->num_hpdet_res
++] = *reading
;
415 if (info
->num_hpdet_res
== 1) {
416 dev_dbg(arizona
->dev
, "Flipping ground\n");
418 regmap_update_bits(arizona
->regmap
,
419 ARIZONA_ACCESSORY_DETECT_MODE_1
,
421 ~info
->micd_modes
[0].src
);
423 regmap_update_bits(arizona
->regmap
,
424 ARIZONA_HEADPHONE_DETECT_1
,
425 ARIZONA_HP_POLL
, ARIZONA_HP_POLL
);
429 /* Only check the mic directly if we didn't already ID it */
430 if (id_gpio
&& info
->num_hpdet_res
== 2 &&
431 !((info
->hpdet_res
[0] > info
->hpdet_res
[1] * 2))) {
432 dev_dbg(arizona
->dev
, "Measuring mic\n");
434 regmap_update_bits(arizona
->regmap
,
435 ARIZONA_ACCESSORY_DETECT_MODE_1
,
436 ARIZONA_ACCDET_MODE_MASK
|
438 ARIZONA_ACCDET_MODE_HPR
|
439 info
->micd_modes
[0].src
);
441 gpio_set_value_cansleep(id_gpio
, 1);
443 regmap_update_bits(arizona
->regmap
,
444 ARIZONA_HEADPHONE_DETECT_1
,
445 ARIZONA_HP_POLL
, ARIZONA_HP_POLL
);
449 /* OK, got both. Now, compare... */
450 dev_dbg(arizona
->dev
, "HPDET measured %d %d %d\n",
451 info
->hpdet_res
[0], info
->hpdet_res
[1],
455 /* Take the headphone impedance for the main report */
456 *reading
= info
->hpdet_res
[0];
459 * Either the two grounds measure differently or we
460 * measure the mic as high impedance.
462 if ((info
->hpdet_res
[0] > info
->hpdet_res
[1] * 2) ||
463 (id_gpio
&& info
->hpdet_res
[2] > 10)) {
464 dev_dbg(arizona
->dev
, "Detected mic\n");
466 info
->detecting
= true;
468 dev_dbg(arizona
->dev
, "Detected headphone\n");
471 /* Make sure everything is reset back to the real polarity */
472 regmap_update_bits(arizona
->regmap
,
473 ARIZONA_ACCESSORY_DETECT_MODE_1
,
475 info
->micd_modes
[0].src
);
481 static irqreturn_t
arizona_hpdet_irq(int irq
, void *data
)
483 struct arizona_extcon_info
*info
= data
;
484 struct arizona
*arizona
= info
->arizona
;
485 int id_gpio
= arizona
->pdata
.hpdet_id_gpio
;
486 int report
= ARIZONA_CABLE_HEADPHONE
;
490 mutex_lock(&info
->lock
);
492 /* If we got a spurious IRQ for some reason then ignore it */
493 if (!info
->hpdet_active
) {
494 dev_warn(arizona
->dev
, "Spurious HPDET IRQ\n");
495 mutex_unlock(&info
->lock
);
499 /* If the cable was removed while measuring ignore the result */
500 ret
= extcon_get_cable_state_(&info
->edev
, ARIZONA_CABLE_MECHANICAL
);
502 dev_err(arizona
->dev
, "Failed to check cable state: %d\n",
506 dev_dbg(arizona
->dev
, "Ignoring HPDET for removed cable\n");
510 ret
= arizona_hpdet_read(info
);
511 if (ret
== -EAGAIN
) {
513 } else if (ret
< 0) {
518 /* Reset back to starting range */
519 regmap_update_bits(arizona
->regmap
,
520 ARIZONA_HEADPHONE_DETECT_1
,
521 ARIZONA_HP_IMPEDANCE_RANGE_MASK
| ARIZONA_HP_POLL
,
524 ret
= arizona_hpdet_do_id(info
, &reading
);
525 if (ret
== -EAGAIN
) {
527 } else if (ret
< 0) {
531 /* Report high impedence cables as line outputs */
533 report
= ARIZONA_CABLE_LINEOUT
;
535 report
= ARIZONA_CABLE_HEADPHONE
;
537 ret
= extcon_set_cable_state_(&info
->edev
, report
, true);
539 dev_err(arizona
->dev
, "Failed to report HP/line: %d\n",
542 mutex_lock(&arizona
->dapm
->card
->dapm_mutex
);
544 ret
= regmap_read(arizona
->regmap
, ARIZONA_OUTPUT_ENABLES_1
, &val
);
546 dev_err(arizona
->dev
, "Failed to read output enables: %d\n",
551 if (!(val
& (ARIZONA_OUT1L_ENA
| ARIZONA_OUT1R_ENA
))) {
552 ret
= regmap_update_bits(arizona
->regmap
, 0x225, 0x4000, 0);
554 dev_warn(arizona
->dev
, "Failed to undo magic: %d\n",
557 ret
= regmap_update_bits(arizona
->regmap
, 0x226, 0x4000, 0);
559 dev_warn(arizona
->dev
, "Failed to undo magic: %d\n",
563 mutex_unlock(&arizona
->dapm
->card
->dapm_mutex
);
567 gpio_set_value_cansleep(id_gpio
, 0);
569 /* Revert back to MICDET mode */
570 regmap_update_bits(arizona
->regmap
,
571 ARIZONA_ACCESSORY_DETECT_MODE_1
,
572 ARIZONA_ACCDET_MODE_MASK
, ARIZONA_ACCDET_MODE_MIC
);
574 /* If we have a mic then reenable MICDET */
576 arizona_start_mic(info
);
578 if (info
->hpdet_active
) {
579 pm_runtime_put_autosuspend(info
->dev
);
580 info
->hpdet_active
= false;
583 info
->hpdet_done
= true;
586 mutex_unlock(&info
->lock
);
591 static void arizona_identify_headphone(struct arizona_extcon_info
*info
)
593 struct arizona
*arizona
= info
->arizona
;
596 if (info
->hpdet_done
)
599 dev_dbg(arizona
->dev
, "Starting HPDET\n");
601 /* Make sure we keep the device enabled during the measurement */
602 pm_runtime_get(info
->dev
);
604 info
->hpdet_active
= true;
607 arizona_stop_mic(info
);
609 ret
= regmap_update_bits(arizona
->regmap
, 0x225, 0x4000, 0x4000);
611 dev_warn(arizona
->dev
, "Failed to do magic: %d\n", ret
);
613 ret
= regmap_update_bits(arizona
->regmap
, 0x226, 0x4000, 0x4000);
615 dev_warn(arizona
->dev
, "Failed to do magic: %d\n", ret
);
617 ret
= regmap_update_bits(arizona
->regmap
,
618 ARIZONA_ACCESSORY_DETECT_MODE_1
,
619 ARIZONA_ACCDET_MODE_MASK
,
620 ARIZONA_ACCDET_MODE_HPL
);
622 dev_err(arizona
->dev
, "Failed to set HPDETL mode: %d\n", ret
);
626 ret
= regmap_update_bits(arizona
->regmap
, ARIZONA_HEADPHONE_DETECT_1
,
627 ARIZONA_HP_POLL
, ARIZONA_HP_POLL
);
629 dev_err(arizona
->dev
, "Can't start HPDETL measurement: %d\n",
637 regmap_update_bits(arizona
->regmap
, ARIZONA_ACCESSORY_DETECT_MODE_1
,
638 ARIZONA_ACCDET_MODE_MASK
, ARIZONA_ACCDET_MODE_MIC
);
640 /* Just report headphone */
641 ret
= extcon_update_state(&info
->edev
,
642 1 << ARIZONA_CABLE_HEADPHONE
,
643 1 << ARIZONA_CABLE_HEADPHONE
);
645 dev_err(arizona
->dev
, "Failed to report headphone: %d\n", ret
);
648 arizona_start_mic(info
);
650 info
->hpdet_active
= false;
653 static void arizona_start_hpdet_acc_id(struct arizona_extcon_info
*info
)
655 struct arizona
*arizona
= info
->arizona
;
659 dev_dbg(arizona
->dev
, "Starting identification via HPDET\n");
661 /* Make sure we keep the device enabled during the measurement */
662 pm_runtime_get_sync(info
->dev
);
664 info
->hpdet_active
= true;
666 arizona_extcon_pulse_micbias(info
);
668 mutex_lock(&arizona
->dapm
->card
->dapm_mutex
);
670 ret
= regmap_read(arizona
->regmap
, ARIZONA_OUTPUT_ENABLES_1
, &val
);
672 dev_err(arizona
->dev
, "Failed to read output enables: %d\n",
677 if (!(val
& (ARIZONA_OUT1L_ENA
| ARIZONA_OUT1R_ENA
))) {
678 ret
= regmap_update_bits(arizona
->regmap
, 0x225, 0x4000,
681 dev_warn(arizona
->dev
, "Failed to do magic: %d\n",
684 ret
= regmap_update_bits(arizona
->regmap
, 0x226, 0x4000,
687 dev_warn(arizona
->dev
, "Failed to do magic: %d\n",
691 mutex_unlock(&arizona
->dapm
->card
->dapm_mutex
);
693 ret
= regmap_update_bits(arizona
->regmap
,
694 ARIZONA_ACCESSORY_DETECT_MODE_1
,
695 ARIZONA_ACCDET_SRC
| ARIZONA_ACCDET_MODE_MASK
,
696 info
->micd_modes
[0].src
|
697 ARIZONA_ACCDET_MODE_HPL
);
699 dev_err(arizona
->dev
, "Failed to set HPDETL mode: %d\n", ret
);
703 ret
= regmap_update_bits(arizona
->regmap
, ARIZONA_HEADPHONE_DETECT_1
,
704 ARIZONA_HP_POLL
, ARIZONA_HP_POLL
);
706 dev_err(arizona
->dev
, "Can't start HPDETL measurement: %d\n",
714 regmap_update_bits(arizona
->regmap
, ARIZONA_ACCESSORY_DETECT_MODE_1
,
715 ARIZONA_ACCDET_MODE_MASK
, ARIZONA_ACCDET_MODE_MIC
);
717 /* Just report headphone */
718 ret
= extcon_update_state(&info
->edev
,
719 1 << ARIZONA_CABLE_HEADPHONE
,
720 1 << ARIZONA_CABLE_HEADPHONE
);
722 dev_err(arizona
->dev
, "Failed to report headphone: %d\n", ret
);
724 info
->hpdet_active
= false;
727 static irqreturn_t
arizona_micdet(int irq
, void *data
)
729 struct arizona_extcon_info
*info
= data
;
730 struct arizona
*arizona
= info
->arizona
;
731 unsigned int val
, lvl
;
734 mutex_lock(&info
->lock
);
736 ret
= regmap_read(arizona
->regmap
, ARIZONA_MIC_DETECT_3
, &val
);
738 dev_err(arizona
->dev
, "Failed to read MICDET: %d\n", ret
);
739 mutex_unlock(&info
->lock
);
743 dev_dbg(arizona
->dev
, "MICDET: %x\n", val
);
745 if (!(val
& ARIZONA_MICD_VALID
)) {
746 dev_warn(arizona
->dev
, "Microphone detection state invalid\n");
747 mutex_unlock(&info
->lock
);
751 /* Due to jack detect this should never happen */
752 if (!(val
& ARIZONA_MICD_STS
)) {
753 dev_warn(arizona
->dev
, "Detected open circuit\n");
754 info
->detecting
= false;
758 /* If we got a high impedence we should have a headset, report it. */
759 if (info
->detecting
&& (val
& 0x400)) {
760 arizona_identify_headphone(info
);
762 ret
= extcon_update_state(&info
->edev
,
763 1 << ARIZONA_CABLE_MICROPHONE
,
764 1 << ARIZONA_CABLE_MICROPHONE
);
767 dev_err(arizona
->dev
, "Headset report failed: %d\n",
770 /* Don't need to regulate for button detection */
771 ret
= regulator_allow_bypass(info
->micvdd
, false);
773 dev_err(arizona
->dev
, "Failed to bypass MICVDD: %d\n",
778 info
->detecting
= false;
782 /* If we detected a lower impedence during initial startup
783 * then we probably have the wrong polarity, flip it. Don't
784 * do this for the lowest impedences to speed up detection of
785 * plain headphones. If both polarities report a low
786 * impedence then give up and report headphones.
788 if (info
->detecting
&& (val
& 0x3f8)) {
789 if (info
->jack_flips
>= info
->micd_num_modes
) {
790 dev_dbg(arizona
->dev
, "Detected HP/line\n");
791 arizona_identify_headphone(info
);
793 info
->detecting
= false;
795 arizona_stop_mic(info
);
798 if (info
->micd_mode
== info
->micd_num_modes
)
800 arizona_extcon_set_mode(info
, info
->micd_mode
);
809 * If we're still detecting and we detect a short then we've
810 * got a headphone. Otherwise it's a button press.
814 dev_dbg(arizona
->dev
, "Mic button detected\n");
816 lvl
= val
& ARIZONA_MICD_LVL_MASK
;
817 lvl
>>= ARIZONA_MICD_LVL_SHIFT
;
819 for (i
= 0; i
< ARIZONA_NUM_BUTTONS
; i
++)
820 if (lvl
& arizona_lvl_to_key
[i
].status
)
821 input_report_key(info
->input
,
822 arizona_lvl_to_key
[i
].report
,
824 input_sync(info
->input
);
826 } else if (info
->detecting
) {
827 dev_dbg(arizona
->dev
, "Headphone detected\n");
828 info
->detecting
= false;
829 arizona_stop_mic(info
);
831 arizona_identify_headphone(info
);
833 dev_warn(arizona
->dev
, "Button with no mic: %x\n",
837 dev_dbg(arizona
->dev
, "Mic button released\n");
838 for (i
= 0; i
< ARIZONA_NUM_BUTTONS
; i
++)
839 input_report_key(info
->input
,
840 arizona_lvl_to_key
[i
].report
, 0);
841 input_sync(info
->input
);
842 arizona_extcon_pulse_micbias(info
);
846 pm_runtime_mark_last_busy(info
->dev
);
847 mutex_unlock(&info
->lock
);
852 static void arizona_hpdet_work(struct work_struct
*work
)
854 struct arizona_extcon_info
*info
= container_of(work
,
855 struct arizona_extcon_info
,
858 mutex_lock(&info
->lock
);
859 arizona_start_hpdet_acc_id(info
);
860 mutex_unlock(&info
->lock
);
863 static irqreturn_t
arizona_jackdet(int irq
, void *data
)
865 struct arizona_extcon_info
*info
= data
;
866 struct arizona
*arizona
= info
->arizona
;
867 unsigned int val
, present
, mask
;
870 pm_runtime_get_sync(info
->dev
);
872 cancel_delayed_work_sync(&info
->hpdet_work
);
874 mutex_lock(&info
->lock
);
876 if (arizona
->pdata
.jd_gpio5
) {
877 mask
= ARIZONA_MICD_CLAMP_STS
;
880 mask
= ARIZONA_JD1_STS
;
881 present
= ARIZONA_JD1_STS
;
884 ret
= regmap_read(arizona
->regmap
, ARIZONA_AOD_IRQ_RAW_STATUS
, &val
);
886 dev_err(arizona
->dev
, "Failed to read jackdet status: %d\n",
888 mutex_unlock(&info
->lock
);
889 pm_runtime_put_autosuspend(info
->dev
);
893 if ((val
& mask
) == present
) {
894 dev_dbg(arizona
->dev
, "Detected jack\n");
895 ret
= extcon_set_cable_state_(&info
->edev
,
896 ARIZONA_CABLE_MECHANICAL
, true);
899 dev_err(arizona
->dev
, "Mechanical report failed: %d\n",
902 if (!arizona
->pdata
.hpdet_acc_id
) {
903 info
->detecting
= true;
905 info
->jack_flips
= 0;
907 arizona_start_mic(info
);
909 schedule_delayed_work(&info
->hpdet_work
,
910 msecs_to_jiffies(250));
913 regmap_update_bits(arizona
->regmap
,
914 ARIZONA_JACK_DETECT_DEBOUNCE
,
915 ARIZONA_MICD_CLAMP_DB
| ARIZONA_JD1_DB
, 0);
917 dev_dbg(arizona
->dev
, "Detected jack removal\n");
919 arizona_stop_mic(info
);
921 info
->num_hpdet_res
= 0;
922 for (i
= 0; i
< ARRAY_SIZE(info
->hpdet_res
); i
++)
923 info
->hpdet_res
[i
] = 0;
925 info
->hpdet_done
= false;
927 for (i
= 0; i
< ARIZONA_NUM_BUTTONS
; i
++)
928 input_report_key(info
->input
,
929 arizona_lvl_to_key
[i
].report
, 0);
930 input_sync(info
->input
);
932 ret
= extcon_update_state(&info
->edev
, 0xffffffff, 0);
934 dev_err(arizona
->dev
, "Removal report failed: %d\n",
937 regmap_update_bits(arizona
->regmap
,
938 ARIZONA_JACK_DETECT_DEBOUNCE
,
939 ARIZONA_MICD_CLAMP_DB
| ARIZONA_JD1_DB
,
940 ARIZONA_MICD_CLAMP_DB
| ARIZONA_JD1_DB
);
943 /* Clear trig_sts to make sure DCVDD is not forced up */
944 regmap_write(arizona
->regmap
, ARIZONA_AOD_WKUP_AND_TRIG
,
945 ARIZONA_MICD_CLAMP_FALL_TRIG_STS
|
946 ARIZONA_MICD_CLAMP_RISE_TRIG_STS
|
947 ARIZONA_JD1_FALL_TRIG_STS
|
948 ARIZONA_JD1_RISE_TRIG_STS
);
950 mutex_unlock(&info
->lock
);
952 pm_runtime_mark_last_busy(info
->dev
);
953 pm_runtime_put_autosuspend(info
->dev
);
958 static int arizona_extcon_probe(struct platform_device
*pdev
)
960 struct arizona
*arizona
= dev_get_drvdata(pdev
->dev
.parent
);
961 struct arizona_pdata
*pdata
;
962 struct arizona_extcon_info
*info
;
963 int jack_irq_fall
, jack_irq_rise
;
966 if (!arizona
->dapm
|| !arizona
->dapm
->card
)
967 return -EPROBE_DEFER
;
969 pdata
= dev_get_platdata(arizona
->dev
);
971 info
= devm_kzalloc(&pdev
->dev
, sizeof(*info
), GFP_KERNEL
);
973 dev_err(&pdev
->dev
, "Failed to allocate memory\n");
978 info
->micvdd
= devm_regulator_get(arizona
->dev
, "MICVDD");
979 if (IS_ERR(info
->micvdd
)) {
980 ret
= PTR_ERR(info
->micvdd
);
981 dev_err(arizona
->dev
, "Failed to get MICVDD: %d\n", ret
);
985 mutex_init(&info
->lock
);
986 info
->arizona
= arizona
;
987 info
->dev
= &pdev
->dev
;
988 INIT_DELAYED_WORK(&info
->hpdet_work
, arizona_hpdet_work
);
989 platform_set_drvdata(pdev
, info
);
991 switch (arizona
->type
) {
993 switch (arizona
->rev
) {
995 info
->micd_reva
= true;
998 info
->micd_clamp
= true;
1007 info
->edev
.name
= "Headset Jack";
1008 info
->edev
.supported_cable
= arizona_cable
;
1010 ret
= extcon_dev_register(&info
->edev
, arizona
->dev
);
1012 dev_err(arizona
->dev
, "extcon_dev_register() failed: %d\n",
1017 if (pdata
->num_micd_configs
) {
1018 info
->micd_modes
= pdata
->micd_configs
;
1019 info
->micd_num_modes
= pdata
->num_micd_configs
;
1021 info
->micd_modes
= micd_default_modes
;
1022 info
->micd_num_modes
= ARRAY_SIZE(micd_default_modes
);
1025 if (arizona
->pdata
.micd_pol_gpio
> 0) {
1026 if (info
->micd_modes
[0].gpio
)
1027 mode
= GPIOF_OUT_INIT_HIGH
;
1029 mode
= GPIOF_OUT_INIT_LOW
;
1031 ret
= devm_gpio_request_one(&pdev
->dev
,
1032 arizona
->pdata
.micd_pol_gpio
,
1036 dev_err(arizona
->dev
, "Failed to request GPIO%d: %d\n",
1037 arizona
->pdata
.micd_pol_gpio
, ret
);
1042 if (arizona
->pdata
.hpdet_id_gpio
> 0) {
1043 ret
= devm_gpio_request_one(&pdev
->dev
,
1044 arizona
->pdata
.hpdet_id_gpio
,
1048 dev_err(arizona
->dev
, "Failed to request GPIO%d: %d\n",
1049 arizona
->pdata
.hpdet_id_gpio
, ret
);
1054 if (arizona
->pdata
.micd_bias_start_time
)
1055 regmap_update_bits(arizona
->regmap
, ARIZONA_MIC_DETECT_1
,
1056 ARIZONA_MICD_BIAS_STARTTIME_MASK
,
1057 arizona
->pdata
.micd_bias_start_time
1058 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT
);
1060 if (arizona
->pdata
.micd_rate
)
1061 regmap_update_bits(arizona
->regmap
, ARIZONA_MIC_DETECT_1
,
1062 ARIZONA_MICD_RATE_MASK
,
1063 arizona
->pdata
.micd_rate
1064 << ARIZONA_MICD_RATE_SHIFT
);
1066 if (arizona
->pdata
.micd_dbtime
)
1067 regmap_update_bits(arizona
->regmap
, ARIZONA_MIC_DETECT_1
,
1068 ARIZONA_MICD_DBTIME_MASK
,
1069 arizona
->pdata
.micd_dbtime
1070 << ARIZONA_MICD_DBTIME_SHIFT
);
1073 * If we have a clamp use it, activating in conjunction with
1074 * GPIO5 if that is connected for jack detect operation.
1076 if (info
->micd_clamp
) {
1077 if (arizona
->pdata
.jd_gpio5
) {
1078 /* Put the GPIO into input mode */
1079 regmap_write(arizona
->regmap
, ARIZONA_GPIO5_CTRL
,
1082 regmap_update_bits(arizona
->regmap
,
1083 ARIZONA_MICD_CLAMP_CONTROL
,
1084 ARIZONA_MICD_CLAMP_MODE_MASK
, 0x9);
1086 regmap_update_bits(arizona
->regmap
,
1087 ARIZONA_MICD_CLAMP_CONTROL
,
1088 ARIZONA_MICD_CLAMP_MODE_MASK
, 0x4);
1091 regmap_update_bits(arizona
->regmap
,
1092 ARIZONA_JACK_DETECT_DEBOUNCE
,
1093 ARIZONA_MICD_CLAMP_DB
,
1094 ARIZONA_MICD_CLAMP_DB
);
1097 arizona_extcon_set_mode(info
, 0);
1099 info
->input
= devm_input_allocate_device(&pdev
->dev
);
1101 dev_err(arizona
->dev
, "Can't allocate input dev\n");
1106 for (i
= 0; i
< ARIZONA_NUM_BUTTONS
; i
++)
1107 input_set_capability(info
->input
, EV_KEY
,
1108 arizona_lvl_to_key
[i
].report
);
1109 info
->input
->name
= "Headset";
1110 info
->input
->phys
= "arizona/extcon";
1111 info
->input
->dev
.parent
= &pdev
->dev
;
1113 pm_runtime_enable(&pdev
->dev
);
1114 pm_runtime_idle(&pdev
->dev
);
1115 pm_runtime_get_sync(&pdev
->dev
);
1117 if (arizona
->pdata
.jd_gpio5
) {
1118 jack_irq_rise
= ARIZONA_IRQ_MICD_CLAMP_RISE
;
1119 jack_irq_fall
= ARIZONA_IRQ_MICD_CLAMP_FALL
;
1121 jack_irq_rise
= ARIZONA_IRQ_JD_RISE
;
1122 jack_irq_fall
= ARIZONA_IRQ_JD_FALL
;
1125 ret
= arizona_request_irq(arizona
, jack_irq_rise
,
1126 "JACKDET rise", arizona_jackdet
, info
);
1128 dev_err(&pdev
->dev
, "Failed to get JACKDET rise IRQ: %d\n",
1133 ret
= arizona_set_irq_wake(arizona
, jack_irq_rise
, 1);
1135 dev_err(&pdev
->dev
, "Failed to set JD rise IRQ wake: %d\n",
1140 ret
= arizona_request_irq(arizona
, jack_irq_fall
,
1141 "JACKDET fall", arizona_jackdet
, info
);
1143 dev_err(&pdev
->dev
, "Failed to get JD fall IRQ: %d\n", ret
);
1147 ret
= arizona_set_irq_wake(arizona
, jack_irq_fall
, 1);
1149 dev_err(&pdev
->dev
, "Failed to set JD fall IRQ wake: %d\n",
1154 ret
= arizona_request_irq(arizona
, ARIZONA_IRQ_MICDET
,
1155 "MICDET", arizona_micdet
, info
);
1157 dev_err(&pdev
->dev
, "Failed to get MICDET IRQ: %d\n", ret
);
1161 ret
= arizona_request_irq(arizona
, ARIZONA_IRQ_HPDET
,
1162 "HPDET", arizona_hpdet_irq
, info
);
1164 dev_err(&pdev
->dev
, "Failed to get HPDET IRQ: %d\n", ret
);
1168 arizona_clk32k_enable(arizona
);
1169 regmap_update_bits(arizona
->regmap
, ARIZONA_JACK_DETECT_DEBOUNCE
,
1170 ARIZONA_JD1_DB
, ARIZONA_JD1_DB
);
1171 regmap_update_bits(arizona
->regmap
, ARIZONA_JACK_DETECT_ANALOGUE
,
1172 ARIZONA_JD1_ENA
, ARIZONA_JD1_ENA
);
1174 ret
= regulator_allow_bypass(info
->micvdd
, true);
1176 dev_warn(arizona
->dev
, "Failed to set MICVDD to bypass: %d\n",
1179 pm_runtime_put(&pdev
->dev
);
1181 ret
= input_register_device(info
->input
);
1183 dev_err(&pdev
->dev
, "Can't register input device: %d\n", ret
);
1190 arizona_free_irq(arizona
, ARIZONA_IRQ_HPDET
, info
);
1192 arizona_free_irq(arizona
, ARIZONA_IRQ_MICDET
, info
);
1194 arizona_set_irq_wake(arizona
, jack_irq_fall
, 0);
1196 arizona_free_irq(arizona
, jack_irq_fall
, info
);
1198 arizona_set_irq_wake(arizona
, jack_irq_rise
, 0);
1200 arizona_free_irq(arizona
, jack_irq_rise
, info
);
1203 pm_runtime_disable(&pdev
->dev
);
1204 extcon_dev_unregister(&info
->edev
);
1209 static int arizona_extcon_remove(struct platform_device
*pdev
)
1211 struct arizona_extcon_info
*info
= platform_get_drvdata(pdev
);
1212 struct arizona
*arizona
= info
->arizona
;
1213 int jack_irq_rise
, jack_irq_fall
;
1215 pm_runtime_disable(&pdev
->dev
);
1217 regmap_update_bits(arizona
->regmap
,
1218 ARIZONA_MICD_CLAMP_CONTROL
,
1219 ARIZONA_MICD_CLAMP_MODE_MASK
, 0);
1221 if (arizona
->pdata
.jd_gpio5
) {
1222 jack_irq_rise
= ARIZONA_IRQ_MICD_CLAMP_RISE
;
1223 jack_irq_fall
= ARIZONA_IRQ_MICD_CLAMP_FALL
;
1225 jack_irq_rise
= ARIZONA_IRQ_JD_RISE
;
1226 jack_irq_fall
= ARIZONA_IRQ_JD_FALL
;
1229 arizona_set_irq_wake(arizona
, jack_irq_rise
, 0);
1230 arizona_set_irq_wake(arizona
, jack_irq_fall
, 0);
1231 arizona_free_irq(arizona
, ARIZONA_IRQ_HPDET
, info
);
1232 arizona_free_irq(arizona
, ARIZONA_IRQ_MICDET
, info
);
1233 arizona_free_irq(arizona
, jack_irq_rise
, info
);
1234 arizona_free_irq(arizona
, jack_irq_fall
, info
);
1235 cancel_delayed_work_sync(&info
->hpdet_work
);
1236 regmap_update_bits(arizona
->regmap
, ARIZONA_JACK_DETECT_ANALOGUE
,
1237 ARIZONA_JD1_ENA
, 0);
1238 arizona_clk32k_disable(arizona
);
1239 extcon_dev_unregister(&info
->edev
);
1244 static struct platform_driver arizona_extcon_driver
= {
1246 .name
= "arizona-extcon",
1247 .owner
= THIS_MODULE
,
1249 .probe
= arizona_extcon_probe
,
1250 .remove
= arizona_extcon_remove
,
1253 module_platform_driver(arizona_extcon_driver
);
1255 MODULE_DESCRIPTION("Arizona Extcon driver");
1256 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1257 MODULE_LICENSE("GPL");
1258 MODULE_ALIAS("platform:extcon-arizona");