Initial import

1 files changed, 1500 insertions, 0 deletions

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
new file mode 100644
index 000000000..a0ed35b33
--- /dev/null
+++ b/drivers/extcon/extcon-arizona.c
@@ -0,0 +1,1500 @@
+/*
+ * extcon-arizona.c - Extcon driver Wolfson Arizona devices
+ *
+ *  Copyright (C) 2012 Wolfson Microelectronics plc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+#include <linux/extcon.h>
+
+#include <sound/soc.h>
+
+#include <linux/mfd/arizona/core.h>
+#include <linux/mfd/arizona/pdata.h>
+#include <linux/mfd/arizona/registers.h>
+
+#define ARIZONA_MAX_MICD_RANGE 8
+
+#define ARIZONA_ACCDET_MODE_MIC 0
+#define ARIZONA_ACCDET_MODE_HPL 1
+#define ARIZONA_ACCDET_MODE_HPR 2
+
+#define ARIZONA_MICD_CLAMP_MODE_JDL      0x4
+#define ARIZONA_MICD_CLAMP_MODE_JDH      0x5
+#define ARIZONA_MICD_CLAMP_MODE_JDL_GP5H 0x9
+#define ARIZONA_MICD_CLAMP_MODE_JDH_GP5H 0xb
+
+#define ARIZONA_HPDET_MAX 10000
+
+#define HPDET_DEBOUNCE 500
+#define DEFAULT_MICD_TIMEOUT 2000
+
+#define MICD_LVL_1_TO_7 (ARIZONA_MICD_LVL_1 | ARIZONA_MICD_LVL_2 | \
+			 ARIZONA_MICD_LVL_3 | ARIZONA_MICD_LVL_4 | \
+			 ARIZONA_MICD_LVL_5 | ARIZONA_MICD_LVL_6 | \
+			 ARIZONA_MICD_LVL_7)
+
+#define MICD_LVL_0_TO_7 (ARIZONA_MICD_LVL_0 | MICD_LVL_1_TO_7)
+
+#define MICD_LVL_0_TO_8 (MICD_LVL_0_TO_7 | ARIZONA_MICD_LVL_8)
+
+struct arizona_extcon_info {
+	struct device *dev;
+	struct arizona *arizona;
+	struct mutex lock;
+	struct regulator *micvdd;
+	struct input_dev *input;
+
+	u16 last_jackdet;
+
+	int micd_mode;
+	const struct arizona_micd_config *micd_modes;
+	int micd_num_modes;
+
+	const struct arizona_micd_range *micd_ranges;
+	int num_micd_ranges;
+
+	int micd_timeout;
+
+	bool micd_reva;
+	bool micd_clamp;
+
+	struct delayed_work hpdet_work;
+	struct delayed_work micd_detect_work;
+	struct delayed_work micd_timeout_work;
+
+	bool hpdet_active;
+	bool hpdet_done;
+	bool hpdet_retried;
+
+	int num_hpdet_res;
+	unsigned int hpdet_res[3];
+
+	bool mic;
+	bool detecting;
+	int jack_flips;
+
+	int hpdet_ip;
+
+	struct extcon_dev *edev;
+};
+
+static const struct arizona_micd_config micd_default_modes[] = {
+	{ ARIZONA_ACCDET_SRC, 1, 0 },
+	{ 0,                  2, 1 },
+};
+
+static const struct arizona_micd_range micd_default_ranges[] = {
+	{ .max =  11, .key = BTN_0 },
+	{ .max =  28, .key = BTN_1 },
+	{ .max =  54, .key = BTN_2 },
+	{ .max = 100, .key = BTN_3 },
+	{ .max = 186, .key = BTN_4 },
+	{ .max = 430, .key = BTN_5 },
+};
+
+static const int arizona_micd_levels[] = {
+	3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46,
+	49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100,
+	105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245,
+	270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071,
+	1257,
+};
+
+#define ARIZONA_CABLE_MECHANICAL 0
+#define ARIZONA_CABLE_MICROPHONE 1
+#define ARIZONA_CABLE_HEADPHONE  2
+#define ARIZONA_CABLE_LINEOUT    3
+
+static const char *arizona_cable[] = {
+	"Mechanical",
+	"Microphone",
+	"Headphone",
+	"Line-out",
+	NULL,
+};
+
+static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info);
+
+static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
+				    bool clamp)
+{
+	struct arizona *arizona = info->arizona;
+	unsigned int mask = 0, val = 0;
+	int ret;
+
+	switch (arizona->type) {
+	case WM5110:
+		mask = ARIZONA_HP1L_SHRTO | ARIZONA_HP1L_FLWR |
+		       ARIZONA_HP1L_SHRTI;
+		if (clamp)
+			val = ARIZONA_HP1L_SHRTO;
+		else
+			val = ARIZONA_HP1L_FLWR | ARIZONA_HP1L_SHRTI;
+		break;
+	default:
+		mask = ARIZONA_RMV_SHRT_HP1L;
+		if (clamp)
+			val = ARIZONA_RMV_SHRT_HP1L;
+		break;
+	};
+
+	mutex_lock(&arizona->dapm->card->dapm_mutex);
+
+	arizona->hpdet_clamp = clamp;
+
+	/* Keep the HP output stages disabled while doing the clamp */
+	if (clamp) {
+		ret = regmap_update_bits(arizona->regmap,
+					 ARIZONA_OUTPUT_ENABLES_1,
+					 ARIZONA_OUT1L_ENA |
+					 ARIZONA_OUT1R_ENA, 0);
+		if (ret != 0)
+			dev_warn(arizona->dev,
+				"Failed to disable headphone outputs: %d\n",
+				 ret);
+	}
+
+	ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1L,
+				 mask, val);
+	if (ret != 0)
+		dev_warn(arizona->dev, "Failed to do clamp: %d\n",
+				 ret);
+
+	ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1R,
+				 mask, val);
+	if (ret != 0)
+		dev_warn(arizona->dev, "Failed to do clamp: %d\n",
+			 ret);
+
+	/* Restore the desired state while not doing the clamp */
+	if (!clamp) {
+		ret = regmap_update_bits(arizona->regmap,
+					 ARIZONA_OUTPUT_ENABLES_1,
+					 ARIZONA_OUT1L_ENA |
+					 ARIZONA_OUT1R_ENA, arizona->hp_ena);
+		if (ret != 0)
+			dev_warn(arizona->dev,
+				 "Failed to restore headphone outputs: %d\n",
+				 ret);
+	}
+
+	mutex_unlock(&arizona->dapm->card->dapm_mutex);
+}
+
+static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
+{
+	struct arizona *arizona = info->arizona;
+
+	mode %= info->micd_num_modes;
+
+	if (arizona->pdata.micd_pol_gpio > 0)
+		gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
+					info->micd_modes[mode].gpio);
+	regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
+			   ARIZONA_MICD_BIAS_SRC_MASK,
+			   info->micd_modes[mode].bias <<
+			   ARIZONA_MICD_BIAS_SRC_SHIFT);
+	regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
+			   ARIZONA_ACCDET_SRC, info->micd_modes[mode].src);
+
+	info->micd_mode = mode;
+
+	dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode);
+}
+
+static const char *arizona_extcon_get_micbias(struct arizona_extcon_info *info)
+{
+	switch (info->micd_modes[0].bias) {
+	case 1:
+		return "MICBIAS1";
+	case 2:
+		return "MICBIAS2";
+	case 3:
+		return "MICBIAS3";
+	default:
+		return "MICVDD";
+	}
+}
+
+static void arizona_extcon_pulse_micbias(struct arizona_extcon_info *info)
+{
+	struct arizona *arizona = info->arizona;
+	const char *widget = arizona_extcon_get_micbias(info);
+	struct snd_soc_dapm_context *dapm = arizona->dapm;
+	int ret;
+
+	ret = snd_soc_dapm_force_enable_pin(dapm, widget);
+	if (ret != 0)
+		dev_warn(arizona->dev, "Failed to enable %s: %d\n",
+			 widget, ret);
+
+	snd_soc_dapm_sync(dapm);
+
+	if (!arizona->pdata.micd_force_micbias) {
+		ret = snd_soc_dapm_disable_pin(arizona->dapm, widget);
+		if (ret != 0)
+			dev_warn(arizona->dev, "Failed to disable %s: %d\n",
+				 widget, ret);
+
+		snd_soc_dapm_sync(dapm);
+	}
+}
+
+static void arizona_start_mic(struct arizona_extcon_info *info)
+{
+	struct arizona *arizona = info->arizona;
+	bool change;
+	int ret;
+
+	/* Microphone detection can't use idle mode */
+	pm_runtime_get(info->dev);
+
+	if (info->detecting) {
+		ret = regulator_allow_bypass(info->micvdd, false);
+		if (ret != 0) {
+			dev_err(arizona->dev,
+				"Failed to regulate MICVDD: %d\n",
+				ret);
+		}
+	}
+
+	ret = regulator_enable(info->micvdd);
+	if (ret != 0) {
+		dev_err(arizona->dev, "Failed to enable MICVDD: %d\n",
+			ret);
+	}
+
+	if (info->micd_reva) {
+		regmap_write(arizona->regmap, 0x80, 0x3);
+		regmap_write(arizona->regmap, 0x294, 0);
+		regmap_write(arizona->regmap, 0x80, 0x0);
+	}
+
+	regmap_update_bits(arizona->regmap,
+			   ARIZONA_ACCESSORY_DETECT_MODE_1,
+			   ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
+
+	arizona_extcon_pulse_micbias(info);
+
+	regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
+				 ARIZONA_MICD_ENA, ARIZONA_MICD_ENA,
+				 &change);
+	if (!change) {
+		regulator_disable(info->micvdd);
+		pm_runtime_put_autosuspend(info->dev);
+	}
+}
+
+static void arizona_stop_mic(struct arizona_extcon_info *info)
+{
+	struct arizona *arizona = info->arizona;
+	const char *widget = arizona_extcon_get_micbias(info);
+	struct snd_soc_dapm_context *dapm = arizona->dapm;
+	bool change;
+	int ret;
+
+	regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
+				 ARIZONA_MICD_ENA, 0,
+				 &change);
+
+	ret = snd_soc_dapm_disable_pin(dapm, widget);
+	if (ret != 0)
+		dev_warn(arizona->dev,
+			 "Failed to disable %s: %d\n",
+			 widget, ret);
+
+	snd_soc_dapm_sync(dapm);
+
+	if (info->micd_reva) {
+		regmap_write(arizona->regmap, 0x80, 0x3);
+		regmap_write(arizona->regmap, 0x294, 2);
+		regmap_write(arizona->regmap, 0x80, 0x0);
+	}
+
+	ret = regulator_allow_bypass(info->micvdd, true);
+	if (ret != 0) {
+		dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
+			ret);
+	}
+
+	if (change) {
+		regulator_disable(info->micvdd);
+		pm_runtime_mark_last_busy(info->dev);
+		pm_runtime_put_autosuspend(info->dev);
+	}
+}
+
+static struct {
+	unsigned int threshold;
+	unsigned int factor_a;
+	unsigned int factor_b;
+} arizona_hpdet_b_ranges[] = {
+	{ 100,  5528,   362464 },
+	{ 169, 11084,  6186851 },
+	{ 169, 11065, 65460395 },
+};
+
+#define ARIZONA_HPDET_B_RANGE_MAX 0x3fb
+
+static struct {
+	int min;
+	int max;
+} arizona_hpdet_c_ranges[] = {
+	{ 0,       30 },
+	{ 8,      100 },
+	{ 100,   1000 },
+	{ 1000, 10000 },
+};
+
+static int arizona_hpdet_read(struct arizona_extcon_info *info)
+{
+	struct arizona *arizona = info->arizona;
+	unsigned int val, range;
+	int ret;
+
+	ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2, &val);
+	if (ret != 0) {
+		dev_err(arizona->dev, "Failed to read HPDET status: %d\n",
+			ret);
+		return ret;
+	}
+
+	switch (info->hpdet_ip) {
+	case 0:
+		if (!(val & ARIZONA_HP_DONE)) {
+			dev_err(arizona->dev, "HPDET did not complete: %x\n",
+				val);
+			return -EAGAIN;
+		}
+
+		val &= ARIZONA_HP_LVL_MASK;
+		break;
+
+	case 1:
+		if (!(val & ARIZONA_HP_DONE_B)) {
+			dev_err(arizona->dev, "HPDET did not complete: %x\n",
+				val);
+			return -EAGAIN;
+		}
+
+		ret = regmap_read(arizona->regmap, ARIZONA_HP_DACVAL, &val);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to read HP value: %d\n",
+				ret);
+			return -EAGAIN;
+		}
+
+		regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
+			    &range);
+		range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
+			   >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
+
+		if (range < ARRAY_SIZE(arizona_hpdet_b_ranges) - 1 &&
+		    (val < arizona_hpdet_b_ranges[range].threshold ||
+		     val >= ARIZONA_HPDET_B_RANGE_MAX)) {
+			range++;
+			dev_dbg(arizona->dev, "Moving to HPDET range %d\n",
+				range);
+			regmap_update_bits(arizona->regmap,
+					   ARIZONA_HEADPHONE_DETECT_1,
+					   ARIZONA_HP_IMPEDANCE_RANGE_MASK,
+					   range <<
+					   ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
+			return -EAGAIN;
+		}
+
+		/* If we go out of range report top of range */
+		if (val < arizona_hpdet_b_ranges[range].threshold ||
+		    val >= ARIZONA_HPDET_B_RANGE_MAX) {
+			dev_dbg(arizona->dev, "Measurement out of range\n");
+			return ARIZONA_HPDET_MAX;
+		}
+
+		dev_dbg(arizona->dev, "HPDET read %d in range %d\n",
+			val, range);
+
+		val = arizona_hpdet_b_ranges[range].factor_b
+			/ ((val * 100) -
+			   arizona_hpdet_b_ranges[range].factor_a);
+		break;
+
+	default:
+		dev_warn(arizona->dev, "Unknown HPDET IP revision %d\n",
+			 info->hpdet_ip);
+	case 2:
+		if (!(val & ARIZONA_HP_DONE_B)) {
+			dev_err(arizona->dev, "HPDET did not complete: %x\n",
+				val);
+			return -EAGAIN;
+		}
+
+		val &= ARIZONA_HP_LVL_B_MASK;
+		/* Convert to ohms, the value is in 0.5 ohm increments */
+		val /= 2;
+
+		regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
+			    &range);
+		range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK)
+			   >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT;
+
+		/* Skip up a range, or report? */
+		if (range < ARRAY_SIZE(arizona_hpdet_c_ranges) - 1 &&
+		    (val >= arizona_hpdet_c_ranges[range].max)) {
+			range++;
+			dev_dbg(arizona->dev, "Moving to HPDET range %d-%d\n",
+				arizona_hpdet_c_ranges[range].min,
+				arizona_hpdet_c_ranges[range].max);
+			regmap_update_bits(arizona->regmap,
+					   ARIZONA_HEADPHONE_DETECT_1,
+					   ARIZONA_HP_IMPEDANCE_RANGE_MASK,
+					   range <<
+					   ARIZONA_HP_IMPEDANCE_RANGE_SHIFT);
+			return -EAGAIN;
+		}
+
+		if (range && (val < arizona_hpdet_c_ranges[range].min)) {
+			dev_dbg(arizona->dev, "Reporting range boundary %d\n",
+				arizona_hpdet_c_ranges[range].min);
+			val = arizona_hpdet_c_ranges[range].min;
+		}
+	}
+
+	dev_dbg(arizona->dev, "HP impedance %d ohms\n", val);
+	return val;
+}
+
+static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading,
+			       bool *mic)
+{
+	struct arizona *arizona = info->arizona;
+	int id_gpio = arizona->pdata.hpdet_id_gpio;
+
+	/*
+	 * If we're using HPDET for accessory identification we need
+	 * to take multiple measurements, step through them in sequence.
+	 */
+	if (arizona->pdata.hpdet_acc_id) {
+		info->hpdet_res[info->num_hpdet_res++] = *reading;
+
+		/* Only check the mic directly if we didn't already ID it */
+		if (id_gpio && info->num_hpdet_res == 1) {
+			dev_dbg(arizona->dev, "Measuring mic\n");
+
+			regmap_update_bits(arizona->regmap,
+					   ARIZONA_ACCESSORY_DETECT_MODE_1,
+					   ARIZONA_ACCDET_MODE_MASK |
+					   ARIZONA_ACCDET_SRC,
+					   ARIZONA_ACCDET_MODE_HPR |
+					   info->micd_modes[0].src);
+
+			gpio_set_value_cansleep(id_gpio, 1);
+
+			regmap_update_bits(arizona->regmap,
+					   ARIZONA_HEADPHONE_DETECT_1,
+					   ARIZONA_HP_POLL, ARIZONA_HP_POLL);
+			return -EAGAIN;
+		}
+
+		/* OK, got both.  Now, compare... */
+		dev_dbg(arizona->dev, "HPDET measured %d %d\n",
+			info->hpdet_res[0], info->hpdet_res[1]);
+
+		/* Take the headphone impedance for the main report */
+		*reading = info->hpdet_res[0];
+
+		/* Sometimes we get false readings due to slow insert */
+		if (*reading >= ARIZONA_HPDET_MAX && !info->hpdet_retried) {
+			dev_dbg(arizona->dev, "Retrying high impedance\n");
+			info->num_hpdet_res = 0;
+			info->hpdet_retried = true;
+			arizona_start_hpdet_acc_id(info);
+			pm_runtime_put(info->dev);
+			return -EAGAIN;
+		}
+
+		/*
+		 * If we measure the mic as high impedance
+		 */
+		if (!id_gpio || info->hpdet_res[1] > 50) {
+			dev_dbg(arizona->dev, "Detected mic\n");
+			*mic = true;
+			info->detecting = true;
+		} else {
+			dev_dbg(arizona->dev, "Detected headphone\n");
+		}
+
+		/* Make sure everything is reset back to the real polarity */
+		regmap_update_bits(arizona->regmap,
+				   ARIZONA_ACCESSORY_DETECT_MODE_1,
+				   ARIZONA_ACCDET_SRC,
+				   info->micd_modes[0].src);
+	}
+
+	return 0;
+}
+
+static irqreturn_t arizona_hpdet_irq(int irq, void *data)
+{
+	struct arizona_extcon_info *info = data;
+	struct arizona *arizona = info->arizona;
+	int id_gpio = arizona->pdata.hpdet_id_gpio;
+	int report = ARIZONA_CABLE_HEADPHONE;
+	int ret, reading;
+	bool mic = false;
+
+	mutex_lock(&info->lock);
+
+	/* If we got a spurious IRQ for some reason then ignore it */
+	if (!info->hpdet_active) {
+		dev_warn(arizona->dev, "Spurious HPDET IRQ\n");
+		mutex_unlock(&info->lock);
+		return IRQ_NONE;
+	}
+
+	/* If the cable was removed while measuring ignore the result */
+	ret = extcon_get_cable_state_(info->edev, ARIZONA_CABLE_MECHANICAL);
+	if (ret < 0) {
+		dev_err(arizona->dev, "Failed to check cable state: %d\n",
+			ret);
+		goto out;
+	} else if (!ret) {
+		dev_dbg(arizona->dev, "Ignoring HPDET for removed cable\n");
+		goto done;
+	}
+
+	ret = arizona_hpdet_read(info);
+	if (ret == -EAGAIN)
+		goto out;
+	else if (ret < 0)
+		goto done;
+	reading = ret;
+
+	/* Reset back to starting range */
+	regmap_update_bits(arizona->regmap,
+			   ARIZONA_HEADPHONE_DETECT_1,
+			   ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
+			   0);
+
+	ret = arizona_hpdet_do_id(info, &reading, &mic);
+	if (ret == -EAGAIN)
+		goto out;
+	else if (ret < 0)
+		goto done;
+
+	/* Report high impedence cables as line outputs */
+	if (reading >= 5000)
+		report = ARIZONA_CABLE_LINEOUT;
+	else
+		report = ARIZONA_CABLE_HEADPHONE;
+
+	ret = extcon_set_cable_state_(info->edev, report, true);
+	if (ret != 0)
+		dev_err(arizona->dev, "Failed to report HP/line: %d\n",
+			ret);
+
+done:
+	/* Reset back to starting range */
+	regmap_update_bits(arizona->regmap,
+			   ARIZONA_HEADPHONE_DETECT_1,
+			   ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
+			   0);
+
+	arizona_extcon_hp_clamp(info, false);
+
+	if (id_gpio)
+		gpio_set_value_cansleep(id_gpio, 0);
+
+	/* Revert back to MICDET mode */
+	regmap_update_bits(arizona->regmap,
+			   ARIZONA_ACCESSORY_DETECT_MODE_1,
+			   ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
+
+	/* If we have a mic then reenable MICDET */
+	if (mic || info->mic)
+		arizona_start_mic(info);
+
+	if (info->hpdet_active) {
+		pm_runtime_put_autosuspend(info->dev);
+		info->hpdet_active = false;
+	}
+
+	info->hpdet_done = true;
+
+out:
+	mutex_unlock(&info->lock);
+
+	return IRQ_HANDLED;
+}
+
+static void arizona_identify_headphone(struct arizona_extcon_info *info)
+{
+	struct arizona *arizona = info->arizona;
+	int ret;
+
+	if (info->hpdet_done)
+		return;
+
+	dev_dbg(arizona->dev, "Starting HPDET\n");
+
+	/* Make sure we keep the device enabled during the measurement */
+	pm_runtime_get(info->dev);
+
+	info->hpdet_active = true;
+
+	if (info->mic)
+		arizona_stop_mic(info);
+
+	arizona_extcon_hp_clamp(info, true);
+
+	ret = regmap_update_bits(arizona->regmap,
+				 ARIZONA_ACCESSORY_DETECT_MODE_1,
+				 ARIZONA_ACCDET_MODE_MASK,
+				 ARIZONA_ACCDET_MODE_HPL);
+	if (ret != 0) {
+		dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
+		goto err;
+	}
+
+	ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
+				 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
+	if (ret != 0) {
+		dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n",
+			ret);
+		goto err;
+	}
+
+	return;
+
+err:
+	regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
+			   ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
+
+	/* Just report headphone */
+	ret = extcon_set_cable_state_(info->edev,
+				      ARIZONA_CABLE_HEADPHONE, true);
+	if (ret != 0)
+		dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
+
+	if (info->mic)
+		arizona_start_mic(info);
+
+	info->hpdet_active = false;
+}
+
+static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
+{
+	struct arizona *arizona = info->arizona;
+	int hp_reading = 32;
+	bool mic;
+	int ret;
+
+	dev_dbg(arizona->dev, "Starting identification via HPDET\n");
+
+	/* Make sure we keep the device enabled during the measurement */
+	pm_runtime_get_sync(info->dev);
+
+	info->hpdet_active = true;
+
+	arizona_extcon_hp_clamp(info, true);
+
+	ret = regmap_update_bits(arizona->regmap,
+				 ARIZONA_ACCESSORY_DETECT_MODE_1,
+				 ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK,
+				 info->micd_modes[0].src |
+				 ARIZONA_ACCDET_MODE_HPL);
+	if (ret != 0) {
+		dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret);
+		goto err;
+	}
+
+	if (arizona->pdata.hpdet_acc_id_line) {
+		ret = regmap_update_bits(arizona->regmap,
+					 ARIZONA_HEADPHONE_DETECT_1,
+					 ARIZONA_HP_POLL, ARIZONA_HP_POLL);
+		if (ret != 0) {
+			dev_err(arizona->dev,
+				"Can't start HPDETL measurement: %d\n",
+				ret);
+			goto err;
+		}
+	} else {
+		arizona_hpdet_do_id(info, &hp_reading, &mic);
+	}
+
+	return;
+
+err:
+	regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
+			   ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
+
+	/* Just report headphone */
+	ret = extcon_set_cable_state_(info->edev,
+				      ARIZONA_CABLE_HEADPHONE, true);
+	if (ret != 0)
+		dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
+
+	info->hpdet_active = false;
+}
+
+static void arizona_micd_timeout_work(struct work_struct *work)
+{
+	struct arizona_extcon_info *info = container_of(work,
+						struct arizona_extcon_info,
+						micd_timeout_work.work);
+
+	mutex_lock(&info->lock);
+
+	dev_dbg(info->arizona->dev, "MICD timed out, reporting HP\n");
+	arizona_identify_headphone(info);
+
+	info->detecting = false;
+
+	arizona_stop_mic(info);
+
+	mutex_unlock(&info->lock);
+}
+
+static void arizona_micd_detect(struct work_struct *work)
+{
+	struct arizona_extcon_info *info = container_of(work,
+						struct arizona_extcon_info,
+						micd_detect_work.work);
+	struct arizona *arizona = info->arizona;
+	unsigned int val = 0, lvl;
+	int ret, i, key;
+
+	cancel_delayed_work_sync(&info->micd_timeout_work);
+
+	mutex_lock(&info->lock);
+
+	/* If the cable was removed while measuring ignore the result */
+	ret = extcon_get_cable_state_(info->edev, ARIZONA_CABLE_MECHANICAL);
+	if (ret < 0) {
+		dev_err(arizona->dev, "Failed to check cable state: %d\n",
+				ret);
+		mutex_unlock(&info->lock);
+		return;
+	} else if (!ret) {
+		dev_dbg(arizona->dev, "Ignoring MICDET for removed cable\n");
+		mutex_unlock(&info->lock);
+		return;
+	}
+
+	for (i = 0; i < 10 && !(val & MICD_LVL_0_TO_8); i++) {
+		ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
+		if (ret != 0) {
+			dev_err(arizona->dev,
+				"Failed to read MICDET: %d\n", ret);
+			mutex_unlock(&info->lock);
+			return;
+		}
+
+		dev_dbg(arizona->dev, "MICDET: %x\n", val);
+
+		if (!(val & ARIZONA_MICD_VALID)) {
+			dev_warn(arizona->dev,
+				 "Microphone detection state invalid\n");
+			mutex_unlock(&info->lock);
+			return;
+		}
+	}
+
+	if (i == 10 && !(val & MICD_LVL_0_TO_8)) {
+		dev_err(arizona->dev, "Failed to get valid MICDET value\n");
+		mutex_unlock(&info->lock);
+		return;
+	}
+
+	/* Due to jack detect this should never happen */
+	if (!(val & ARIZONA_MICD_STS)) {
+		dev_warn(arizona->dev, "Detected open circuit\n");
+		info->detecting = false;
+		goto handled;
+	}
+
+	/* If we got a high impedence we should have a headset, report it. */
+	if (info->detecting && (val & ARIZONA_MICD_LVL_8)) {
+		arizona_identify_headphone(info);
+
+		ret = extcon_set_cable_state_(info->edev,
+					      ARIZONA_CABLE_MICROPHONE, true);
+
+		if (ret != 0)
+			dev_err(arizona->dev, "Headset report failed: %d\n",
+				ret);
+
+		/* Don't need to regulate for button detection */
+		ret = regulator_allow_bypass(info->micvdd, true);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n",
+				ret);
+		}
+
+		info->mic = true;
+		info->detecting = false;
+		goto handled;
+	}
+
+	/* If we detected a lower impedence during initial startup
+	 * then we probably have the wrong polarity, flip it.  Don't
+	 * do this for the lowest impedences to speed up detection of
+	 * plain headphones.  If both polarities report a low
+	 * impedence then give up and report headphones.
+	 */
+	if (info->detecting && (val & MICD_LVL_1_TO_7)) {
+		if (info->jack_flips >= info->micd_num_modes * 10) {
+			dev_dbg(arizona->dev, "Detected HP/line\n");
+			arizona_identify_headphone(info);
+
+			info->detecting = false;
+
+			arizona_stop_mic(info);
+		} else {
+			info->micd_mode++;
+			if (info->micd_mode == info->micd_num_modes)
+				info->micd_mode = 0;
+			arizona_extcon_set_mode(info, info->micd_mode);
+
+			info->jack_flips++;
+		}
+
+		goto handled;
+	}
+
+	/*
+	 * If we're still detecting and we detect a short then we've
+	 * got a headphone.  Otherwise it's a button press.
+	 */
+	if (val & MICD_LVL_0_TO_7) {
+		if (info->mic) {
+			dev_dbg(arizona->dev, "Mic button detected\n");
+
+			lvl = val & ARIZONA_MICD_LVL_MASK;
+			lvl >>= ARIZONA_MICD_LVL_SHIFT;
+
+			for (i = 0; i < info->num_micd_ranges; i++)
+				input_report_key(info->input,
+						 info->micd_ranges[i].key, 0);
+
+			WARN_ON(!lvl);
+			WARN_ON(ffs(lvl) - 1 >= info->num_micd_ranges);
+			if (lvl && ffs(lvl) - 1 < info->num_micd_ranges) {
+				key = info->micd_ranges[ffs(lvl) - 1].key;
+				input_report_key(info->input, key, 1);
+				input_sync(info->input);
+			}
+
+		} else if (info->detecting) {
+			dev_dbg(arizona->dev, "Headphone detected\n");
+			info->detecting = false;
+			arizona_stop_mic(info);
+
+			arizona_identify_headphone(info);
+		} else {
+			dev_warn(arizona->dev, "Button with no mic: %x\n",
+				 val);
+		}
+	} else {
+		dev_dbg(arizona->dev, "Mic button released\n");
+		for (i = 0; i < info->num_micd_ranges; i++)
+			input_report_key(info->input,
+					 info->micd_ranges[i].key, 0);
+		input_sync(info->input);
+		arizona_extcon_pulse_micbias(info);
+	}
+
+handled:
+	if (info->detecting)
+		queue_delayed_work(system_power_efficient_wq,
+				   &info->micd_timeout_work,
+				   msecs_to_jiffies(info->micd_timeout));
+
+	pm_runtime_mark_last_busy(info->dev);
+	mutex_unlock(&info->lock);
+}
+
+static irqreturn_t arizona_micdet(int irq, void *data)
+{
+	struct arizona_extcon_info *info = data;
+	struct arizona *arizona = info->arizona;
+	int debounce = arizona->pdata.micd_detect_debounce;
+
+	cancel_delayed_work_sync(&info->micd_detect_work);
+	cancel_delayed_work_sync(&info->micd_timeout_work);
+
+	mutex_lock(&info->lock);
+	if (!info->detecting)
+		debounce = 0;
+	mutex_unlock(&info->lock);
+
+	if (debounce)
+		queue_delayed_work(system_power_efficient_wq,
+				   &info->micd_detect_work,
+				   msecs_to_jiffies(debounce));
+	else
+		arizona_micd_detect(&info->micd_detect_work.work);
+
+	return IRQ_HANDLED;
+}
+
+static void arizona_hpdet_work(struct work_struct *work)
+{
+	struct arizona_extcon_info *info = container_of(work,
+						struct arizona_extcon_info,
+						hpdet_work.work);
+
+	mutex_lock(&info->lock);
+	arizona_start_hpdet_acc_id(info);
+	mutex_unlock(&info->lock);
+}
+
+static irqreturn_t arizona_jackdet(int irq, void *data)
+{
+	struct arizona_extcon_info *info = data;
+	struct arizona *arizona = info->arizona;
+	unsigned int val, present, mask;
+	bool cancelled_hp, cancelled_mic;
+	int ret, i;
+
+	cancelled_hp = cancel_delayed_work_sync(&info->hpdet_work);
+	cancelled_mic = cancel_delayed_work_sync(&info->micd_timeout_work);
+
+	pm_runtime_get_sync(info->dev);
+
+	mutex_lock(&info->lock);
+
+	if (arizona->pdata.jd_gpio5) {
+		mask = ARIZONA_MICD_CLAMP_STS;
+		if (arizona->pdata.jd_invert)
+			present = ARIZONA_MICD_CLAMP_STS;
+		else
+			present = 0;
+	} else {
+		mask = ARIZONA_JD1_STS;
+		if (arizona->pdata.jd_invert)
+			present = 0;
+		else
+			present = ARIZONA_JD1_STS;
+	}
+
+	ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
+	if (ret != 0) {
+		dev_err(arizona->dev, "Failed to read jackdet status: %d\n",
+			ret);
+		mutex_unlock(&info->lock);
+		pm_runtime_put_autosuspend(info->dev);
+		return IRQ_NONE;
+	}
+
+	val &= mask;
+	if (val == info->last_jackdet) {
+		dev_dbg(arizona->dev, "Suppressing duplicate JACKDET\n");
+		if (cancelled_hp)
+			queue_delayed_work(system_power_efficient_wq,
+					   &info->hpdet_work,
+					   msecs_to_jiffies(HPDET_DEBOUNCE));
+
+		if (cancelled_mic) {
+			int micd_timeout = info->micd_timeout;
+
+			queue_delayed_work(system_power_efficient_wq,
+					   &info->micd_timeout_work,
+					   msecs_to_jiffies(micd_timeout));
+		}
+
+		goto out;
+	}
+	info->last_jackdet = val;
+
+	if (info->last_jackdet == present) {
+		dev_dbg(arizona->dev, "Detected jack\n");
+		ret = extcon_set_cable_state_(info->edev,
+					      ARIZONA_CABLE_MECHANICAL, true);
+
+		if (ret != 0)
+			dev_err(arizona->dev, "Mechanical report failed: %d\n",
+				ret);
+
+		if (!arizona->pdata.hpdet_acc_id) {
+			info->detecting = true;
+			info->mic = false;
+			info->jack_flips = 0;
+
+			arizona_start_mic(info);
+		} else {
+			queue_delayed_work(system_power_efficient_wq,
+					   &info->hpdet_work,
+					   msecs_to_jiffies(HPDET_DEBOUNCE));
+		}
+
+		regmap_update_bits(arizona->regmap,
+				   ARIZONA_JACK_DETECT_DEBOUNCE,
+				   ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB, 0);
+	} else {
+		dev_dbg(arizona->dev, "Detected jack removal\n");
+
+		arizona_stop_mic(info);
+
+		info->num_hpdet_res = 0;
+		for (i = 0; i < ARRAY_SIZE(info->hpdet_res); i++)
+			info->hpdet_res[i] = 0;
+		info->mic = false;
+		info->hpdet_done = false;
+		info->hpdet_retried = false;
+
+		for (i = 0; i < info->num_micd_ranges; i++)
+			input_report_key(info->input,
+					 info->micd_ranges[i].key, 0);
+		input_sync(info->input);
+
+		ret = extcon_update_state(info->edev, 0xffffffff, 0);
+		if (ret != 0)
+			dev_err(arizona->dev, "Removal report failed: %d\n",
+				ret);
+
+		regmap_update_bits(arizona->regmap,
+				   ARIZONA_JACK_DETECT_DEBOUNCE,
+				   ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB,
+				   ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB);
+	}
+
+	if (arizona->pdata.micd_timeout)
+		info->micd_timeout = arizona->pdata.micd_timeout;
+	else
+		info->micd_timeout = DEFAULT_MICD_TIMEOUT;
+
+out:
+	/* Clear trig_sts to make sure DCVDD is not forced up */
+	regmap_write(arizona->regmap, ARIZONA_AOD_WKUP_AND_TRIG,
+		     ARIZONA_MICD_CLAMP_FALL_TRIG_STS |
+		     ARIZONA_MICD_CLAMP_RISE_TRIG_STS |
+		     ARIZONA_JD1_FALL_TRIG_STS |
+		     ARIZONA_JD1_RISE_TRIG_STS);
+
+	mutex_unlock(&info->lock);
+
+	pm_runtime_mark_last_busy(info->dev);
+	pm_runtime_put_autosuspend(info->dev);
+
+	return IRQ_HANDLED;
+}
+
+/* Map a level onto a slot in the register bank */
+static void arizona_micd_set_level(struct arizona *arizona, int index,
+				   unsigned int level)
+{
+	int reg;
+	unsigned int mask;
+
+	reg = ARIZONA_MIC_DETECT_LEVEL_4 - (index / 2);
+
+	if (!(index % 2)) {
+		mask = 0x3f00;
+		level <<= 8;
+	} else {
+		mask = 0x3f;
+	}
+
+	/* Program the level itself */
+	regmap_update_bits(arizona->regmap, reg, mask, level);
+}
+
+static int arizona_extcon_probe(struct platform_device *pdev)
+{
+	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
+	struct arizona_pdata *pdata = &arizona->pdata;
+	struct arizona_extcon_info *info;
+	unsigned int val;
+	unsigned int clamp_mode;
+	int jack_irq_fall, jack_irq_rise;
+	int ret, mode, i, j;
+
+	if (!arizona->dapm || !arizona->dapm->card)
+		return -EPROBE_DEFER;
+
+	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD");
+	if (IS_ERR(info->micvdd)) {
+		ret = PTR_ERR(info->micvdd);
+		dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
+		return ret;
+	}
+
+	mutex_init(&info->lock);
+	info->arizona = arizona;
+	info->dev = &pdev->dev;
+	info->last_jackdet = ~(ARIZONA_MICD_CLAMP_STS | ARIZONA_JD1_STS);
+	INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work);
+	INIT_DELAYED_WORK(&info->micd_detect_work, arizona_micd_detect);
+	INIT_DELAYED_WORK(&info->micd_timeout_work, arizona_micd_timeout_work);
+	platform_set_drvdata(pdev, info);
+
+	switch (arizona->type) {
+	case WM5102:
+		switch (arizona->rev) {
+		case 0:
+			info->micd_reva = true;
+			break;
+		default:
+			info->micd_clamp = true;
+			info->hpdet_ip = 1;
+			break;
+		}
+		break;
+	case WM5110:
+	case WM8280:
+		switch (arizona->rev) {
+		case 0 ... 2:
+			break;
+		default:
+			info->micd_clamp = true;
+			info->hpdet_ip = 2;
+			break;
+		}
+		break;
+	default:
+		break;
+	}
+
+	info->edev = devm_extcon_dev_allocate(&pdev->dev, arizona_cable);
+	if (IS_ERR(info->edev)) {
+		dev_err(&pdev->dev, "failed to allocate extcon device\n");
+		return -ENOMEM;
+	}
+	info->edev->name = "Headset Jack";
+
+	ret = devm_extcon_dev_register(&pdev->dev, info->edev);
+	if (ret < 0) {
+		dev_err(arizona->dev, "extcon_dev_register() failed: %d\n",
+			ret);
+		return ret;
+	}
+
+	info->input = devm_input_allocate_device(&pdev->dev);
+	if (!info->input) {
+		dev_err(arizona->dev, "Can't allocate input dev\n");
+		ret = -ENOMEM;
+		goto err_register;
+	}
+
+	info->input->name = "Headset";
+	info->input->phys = "arizona/extcon";
+
+	if (pdata->num_micd_configs) {
+		info->micd_modes = pdata->micd_configs;
+		info->micd_num_modes = pdata->num_micd_configs;
+	} else {
+		info->micd_modes = micd_default_modes;
+		info->micd_num_modes = ARRAY_SIZE(micd_default_modes);
+	}
+
+	if (arizona->pdata.micd_pol_gpio > 0) {
+		if (info->micd_modes[0].gpio)
+			mode = GPIOF_OUT_INIT_HIGH;
+		else
+			mode = GPIOF_OUT_INIT_LOW;
+
+		ret = devm_gpio_request_one(&pdev->dev,
+					    arizona->pdata.micd_pol_gpio,
+					    mode,
+					    "MICD polarity");
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
+				arizona->pdata.micd_pol_gpio, ret);
+			goto err_register;
+		}
+	}
+
+	if (arizona->pdata.hpdet_id_gpio > 0) {
+		ret = devm_gpio_request_one(&pdev->dev,
+					    arizona->pdata.hpdet_id_gpio,
+					    GPIOF_OUT_INIT_LOW,
+					    "HPDET");
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
+				arizona->pdata.hpdet_id_gpio, ret);
+			goto err_register;
+		}
+	}
+
+	if (arizona->pdata.micd_bias_start_time)
+		regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
+				   ARIZONA_MICD_BIAS_STARTTIME_MASK,
+				   arizona->pdata.micd_bias_start_time
+				   << ARIZONA_MICD_BIAS_STARTTIME_SHIFT);
+
+	if (arizona->pdata.micd_rate)
+		regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
+				   ARIZONA_MICD_RATE_MASK,
+				   arizona->pdata.micd_rate
+				   << ARIZONA_MICD_RATE_SHIFT);
+
+	if (arizona->pdata.micd_dbtime)
+		regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
+				   ARIZONA_MICD_DBTIME_MASK,
+				   arizona->pdata.micd_dbtime
+				   << ARIZONA_MICD_DBTIME_SHIFT);
+
+	BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) != 0x40);
+
+	if (arizona->pdata.num_micd_ranges) {
+		info->micd_ranges = pdata->micd_ranges;
+		info->num_micd_ranges = pdata->num_micd_ranges;
+	} else {
+		info->micd_ranges = micd_default_ranges;
+		info->num_micd_ranges = ARRAY_SIZE(micd_default_ranges);
+	}
+
+	if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_RANGE) {
+		dev_err(arizona->dev, "Too many MICD ranges: %d\n",
+			arizona->pdata.num_micd_ranges);
+	}
+
+	if (info->num_micd_ranges > 1) {
+		for (i = 1; i < info->num_micd_ranges; i++) {
+			if (info->micd_ranges[i - 1].max >
+			    info->micd_ranges[i].max) {
+				dev_err(arizona->dev,
+					"MICD ranges must be sorted\n");
+				ret = -EINVAL;
+				goto err_input;
+			}
+		}
+	}
+
+	/* Disable all buttons by default */
+	regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
+			   ARIZONA_MICD_LVL_SEL_MASK, 0x81);
+
+	/* Set up all the buttons the user specified */
+	for (i = 0; i < info->num_micd_ranges; i++) {
+		for (j = 0; j < ARRAY_SIZE(arizona_micd_levels); j++)
+			if (arizona_micd_levels[j] >= info->micd_ranges[i].max)
+				break;
+
+		if (j == ARRAY_SIZE(arizona_micd_levels)) {
+			dev_err(arizona->dev, "Unsupported MICD level %d\n",
+				info->micd_ranges[i].max);
+			ret = -EINVAL;
+			goto err_input;
+		}
+
+		dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n",
+			arizona_micd_levels[j], i);
+
+		arizona_micd_set_level(arizona, i, j);
+		input_set_capability(info->input, EV_KEY,
+				     info->micd_ranges[i].key);
+
+		/* Enable reporting of that range */
+		regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
+				   1 << i, 1 << i);
+	}
+
+	/* Set all the remaining keys to a maximum */
+	for (; i < ARIZONA_MAX_MICD_RANGE; i++)
+		arizona_micd_set_level(arizona, i, 0x3f);
+
+	/*
+	 * If we have a clamp use it, activating in conjunction with
+	 * GPIO5 if that is connected for jack detect operation.
+	 */
+	if (info->micd_clamp) {
+		if (arizona->pdata.jd_gpio5) {
+			/* Put the GPIO into input mode with optional pull */
+			val = 0xc101;
+			if (arizona->pdata.jd_gpio5_nopull)
+				val &= ~ARIZONA_GPN_PU;
+
+			regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL,
+				     val);
+
+			if (arizona->pdata.jd_invert)
+				clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH_GP5H;
+			else
+				clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL_GP5H;
+		} else {
+			if (arizona->pdata.jd_invert)
+				clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH;
+			else
+				clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL;
+		}
+
+		regmap_update_bits(arizona->regmap,
+				   ARIZONA_MICD_CLAMP_CONTROL,
+				   ARIZONA_MICD_CLAMP_MODE_MASK, clamp_mode);
+
+		regmap_update_bits(arizona->regmap,
+				   ARIZONA_JACK_DETECT_DEBOUNCE,
+				   ARIZONA_MICD_CLAMP_DB,
+				   ARIZONA_MICD_CLAMP_DB);
+	}
+
+	arizona_extcon_set_mode(info, 0);
+
+	pm_runtime_enable(&pdev->dev);
+	pm_runtime_idle(&pdev->dev);
+	pm_runtime_get_sync(&pdev->dev);
+
+	if (arizona->pdata.jd_gpio5) {
+		jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
+		jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
+	} else {
+		jack_irq_rise = ARIZONA_IRQ_JD_RISE;
+		jack_irq_fall = ARIZONA_IRQ_JD_FALL;
+	}
+
+	ret = arizona_request_irq(arizona, jack_irq_rise,
+				  "JACKDET rise", arizona_jackdet, info);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
+			ret);
+		goto err_input;
+	}
+
+	ret = arizona_set_irq_wake(arizona, jack_irq_rise, 1);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Failed to set JD rise IRQ wake: %d\n",
+			ret);
+		goto err_rise;
+	}
+
+	ret = arizona_request_irq(arizona, jack_irq_fall,
+				  "JACKDET fall", arizona_jackdet, info);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Failed to get JD fall IRQ: %d\n", ret);
+		goto err_rise_wake;
+	}
+
+	ret = arizona_set_irq_wake(arizona, jack_irq_fall, 1);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Failed to set JD fall IRQ wake: %d\n",
+			ret);
+		goto err_fall;
+	}
+
+	ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET,
+				  "MICDET", arizona_micdet, info);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Failed to get MICDET IRQ: %d\n", ret);
+		goto err_fall_wake;
+	}
+
+	ret = arizona_request_irq(arizona, ARIZONA_IRQ_HPDET,
+				  "HPDET", arizona_hpdet_irq, info);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Failed to get HPDET IRQ: %d\n", ret);
+		goto err_micdet;
+	}
+
+	arizona_clk32k_enable(arizona);
+	regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE,
+			   ARIZONA_JD1_DB, ARIZONA_JD1_DB);
+	regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
+			   ARIZONA_JD1_ENA, ARIZONA_JD1_ENA);
+
+	ret = regulator_allow_bypass(info->micvdd, true);
+	if (ret != 0)
+		dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n",
+			 ret);
+
+	pm_runtime_put(&pdev->dev);
+
+	ret = input_register_device(info->input);
+	if (ret) {
+		dev_err(&pdev->dev, "Can't register input device: %d\n", ret);
+		goto err_hpdet;
+	}
+
+	return 0;
+
+err_hpdet:
+	arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
+err_micdet:
+	arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
+err_fall_wake:
+	arizona_set_irq_wake(arizona, jack_irq_fall, 0);
+err_fall:
+	arizona_free_irq(arizona, jack_irq_fall, info);
+err_rise_wake:
+	arizona_set_irq_wake(arizona, jack_irq_rise, 0);
+err_rise:
+	arizona_free_irq(arizona, jack_irq_rise, info);
+err_input:
+err_register:
+	pm_runtime_disable(&pdev->dev);
+	return ret;
+}
+
+static int arizona_extcon_remove(struct platform_device *pdev)
+{
+	struct arizona_extcon_info *info = platform_get_drvdata(pdev);
+	struct arizona *arizona = info->arizona;
+	int jack_irq_rise, jack_irq_fall;
+
+	pm_runtime_disable(&pdev->dev);
+
+	regmap_update_bits(arizona->regmap,
+			   ARIZONA_MICD_CLAMP_CONTROL,
+			   ARIZONA_MICD_CLAMP_MODE_MASK, 0);
+
+	if (arizona->pdata.jd_gpio5) {
+		jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE;
+		jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL;
+	} else {
+		jack_irq_rise = ARIZONA_IRQ_JD_RISE;
+		jack_irq_fall = ARIZONA_IRQ_JD_FALL;
+	}
+
+	arizona_set_irq_wake(arizona, jack_irq_rise, 0);
+	arizona_set_irq_wake(arizona, jack_irq_fall, 0);
+	arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info);
+	arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
+	arizona_free_irq(arizona, jack_irq_rise, info);
+	arizona_free_irq(arizona, jack_irq_fall, info);
+	cancel_delayed_work_sync(&info->hpdet_work);
+	regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
+			   ARIZONA_JD1_ENA, 0);
+	arizona_clk32k_disable(arizona);
+
+	return 0;
+}
+
+static struct platform_driver arizona_extcon_driver = {
+	.driver		= {
+		.name	= "arizona-extcon",
+	},
+	.probe		= arizona_extcon_probe,
+	.remove		= arizona_extcon_remove,
+};
+
+module_platform_driver(arizona_extcon_driver);
+
+MODULE_DESCRIPTION("Arizona Extcon driver");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:extcon-arizona");