drivers/extcon/extcon-arizona.c - kernel/msm-4.9 - Gitiles

 /*
  * 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/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/regulator/consumer.h>
 #include <linux/extcon.h>

 #include <linux/mfd/arizona/core.h>
 #include <linux/mfd/arizona/pdata.h>
 #include <linux/mfd/arizona/registers.h>

 struct arizona_extcon_info {
 	struct device *dev;
 	struct arizona *arizona;
 	struct mutex lock;
 	struct regulator *micvdd;

 	int micd_mode;
 	const struct arizona_micd_config *micd_modes;
 	int micd_num_modes;

 	bool micd_reva;

 	bool mic;
 	bool detecting;
 	int jack_flips;

 	struct extcon_dev edev;
 };

 static const struct arizona_micd_config micd_default_modes[] = {
 	{ ARIZONA_ACCDET_SRC, 1 << ARIZONA_MICD_BIAS_SRC_SHIFT, 0 },
 	{ 0,                  2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 },
 };

 #define ARIZONA_CABLE_MECHANICAL 0
 #define ARIZONA_CABLE_MICROPHONE 1
 #define ARIZONA_CABLE_HEADPHONE  2

 static const char *arizona_cable[] = {
 	"Mechanical",
 	"Microphone",
 	"Headphone",
 	NULL,
 };

 static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
 {
 	struct arizona *arizona = info->arizona;

 	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);
 	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 void arizona_start_mic(struct arizona_extcon_info *info)
 {
 	struct arizona *arizona = info->arizona;
 	bool change;
 	int ret;

 	info->detecting = true;
 	info->mic = false;
 	info->jack_flips = 0;

 	/* Microphone detection can't use idle mode */
 	pm_runtime_get(info->dev);

 	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_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;
 	bool change;

 	regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
 				 ARIZONA_MICD_ENA, 0,
 				 &change);

 	if (info->micd_reva) {
 		regmap_write(arizona->regmap, 0x80, 0x3);
 		regmap_write(arizona->regmap, 0x294, 2);
 		regmap_write(arizona->regmap, 0x80, 0x0);
 	}

 	if (change) {
 		regulator_disable(info->micvdd);
 		pm_runtime_put_autosuspend(info->dev);
 	}
 }

 static irqreturn_t arizona_micdet(int irq, void *data)
 {
 	struct arizona_extcon_info *info = data;
 	struct arizona *arizona = info->arizona;
 	unsigned int val;
 	int ret;

 	mutex_lock(&info->lock);

 	ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
 	if (ret != 0) {
 		dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret);
 		return IRQ_NONE;
 	}

 	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 IRQ_NONE;
 	}

 	/* 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 & 0x400)) {
 		ret = extcon_update_state(&info->edev,
 					  1 << ARIZONA_CABLE_MICROPHONE |
 					  1 << ARIZONA_CABLE_HEADPHONE,
 					  1 << ARIZONA_CABLE_MICROPHONE |
 					  1 << ARIZONA_CABLE_HEADPHONE);

 		if (ret != 0)
 			dev_err(arizona->dev, "Headset report failed: %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 & 0x3f8)) {
 		info->jack_flips++;

 		if (info->jack_flips >= info->micd_num_modes) {
 			dev_dbg(arizona->dev, "Detected headphone\n");
 			info->detecting = false;
 			arizona_stop_mic(info);

 			ret = extcon_set_cable_state_(&info->edev,
 						      ARIZONA_CABLE_HEADPHONE,
 						      true);
 			if (ret != 0)
 				dev_err(arizona->dev,
 					"Headphone report failed: %d\n",
 				ret);
 		} 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, the
 	 * button reporting is stubbed out for now.
 	 */
 	if (val & 0x3fc) {
 		if (info->mic) {
 			dev_dbg(arizona->dev, "Mic button detected\n");

 		} else if (info->detecting) {
 			dev_dbg(arizona->dev, "Headphone detected\n");
 			info->detecting = false;
 			arizona_stop_mic(info);

 			ret = extcon_set_cable_state_(&info->edev,
 						      ARIZONA_CABLE_HEADPHONE,
 						      true);
 			if (ret != 0)
 				dev_err(arizona->dev,
 					"Headphone report failed: %d\n",
 				ret);
 		} else {
 			dev_warn(arizona->dev, "Button with no mic: %x\n",
 				 val);
 		}
 	} else {
 		dev_dbg(arizona->dev, "Mic button released\n");
 	}

 handled:
 	pm_runtime_mark_last_busy(info->dev);
 	mutex_unlock(&info->lock);

 	return IRQ_HANDLED;
 }

 static irqreturn_t arizona_jackdet(int irq, void *data)
 {
 	struct arizona_extcon_info *info = data;
 	struct arizona *arizona = info->arizona;
 	unsigned int val;
 	int ret;

 	pm_runtime_get_sync(info->dev);

 	mutex_lock(&info->lock);

 	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;
 	}

 	if (val & ARIZONA_JD1_STS) {
 		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);

 		arizona_start_mic(info);
 	} else {
 		dev_dbg(arizona->dev, "Detected jack removal\n");

 		arizona_stop_mic(info);

 		ret = extcon_update_state(&info->edev, 0xffffffff, 0);
 		if (ret != 0)
 			dev_err(arizona->dev, "Removal report failed: %d\n",
 				ret);
 	}

 	mutex_unlock(&info->lock);

 	pm_runtime_mark_last_busy(info->dev);
 	pm_runtime_put_autosuspend(info->dev);

 	return IRQ_HANDLED;
 }

 static int __devinit arizona_extcon_probe(struct platform_device *pdev)
 {
 	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
 	struct arizona_pdata *pdata;
 	struct arizona_extcon_info *info;
 	int ret, mode;

 	pdata = dev_get_platdata(arizona->dev);

 	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
 	if (!info) {
 		dev_err(&pdev->dev, "failed to allocate memory\n");
 		ret = -ENOMEM;
 		goto err;
 	}

 	info->micvdd = devm_regulator_get(arizona->dev, "MICVDD");
 	if (IS_ERR(info->micvdd)) {
 		ret = PTR_ERR(info->micvdd);
 		dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
 		goto err;
 	}

 	mutex_init(&info->lock);
 	info->arizona = arizona;
 	info->dev = &pdev->dev;
 	info->detecting = true;
 	platform_set_drvdata(pdev, info);

 	switch (arizona->type) {
 	case WM5102:
 		switch (arizona->rev) {
 		case 0:
 			info->micd_reva = true;
 			break;
 		default:
 			break;
 		}
 		break;
 	default:
 		break;
 	}

 	info->edev.name = "Headset Jack";
 	info->edev.supported_cable = arizona_cable;

 	ret = extcon_dev_register(&info->edev, arizona->dev);
 	if (ret < 0) {
 		dev_err(arizona->dev, "extcon_dev_regster() failed: %d\n",
 			ret);
 		goto err;
 	}

 	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;
 		}
 	}

 	arizona_extcon_set_mode(info, 0);

 	pm_runtime_enable(&pdev->dev);
 	pm_runtime_idle(&pdev->dev);
 	pm_runtime_get_sync(&pdev->dev);

 	ret = arizona_request_irq(arizona, ARIZONA_IRQ_JD_RISE,
 				  "JACKDET rise", arizona_jackdet, info);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
 			ret);
 		goto err_register;
 	}

 	ret = arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_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, ARIZONA_IRQ_JD_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, ARIZONA_IRQ_JD_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;
 	}

 	regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
 			   ARIZONA_MICD_BIAS_STARTTIME_MASK |
 			   ARIZONA_MICD_RATE_MASK,
 			   7 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT |
 			   8 << ARIZONA_MICD_RATE_SHIFT);

 	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);

 	pm_runtime_put(&pdev->dev);

 	return 0;

 err_fall_wake:
 	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0);
 err_fall:
 	arizona_free_irq(arizona, ARIZONA_IRQ_JD_FALL, info);
 err_rise_wake:
 	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0);
 err_rise:
 	arizona_free_irq(arizona, ARIZONA_IRQ_JD_RISE, info);
 err_register:
 	pm_runtime_disable(&pdev->dev);
 	extcon_dev_unregister(&info->edev);
 err:
 	return ret;
 }

 static int __devexit arizona_extcon_remove(struct platform_device *pdev)
 {
 	struct arizona_extcon_info *info = platform_get_drvdata(pdev);
 	struct arizona *arizona = info->arizona;

 	pm_runtime_disable(&pdev->dev);

 	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0);
 	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0);
 	arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
 	arizona_free_irq(arizona, ARIZONA_IRQ_JD_RISE, info);
 	arizona_free_irq(arizona, ARIZONA_IRQ_JD_FALL, info);
 	regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
 			   ARIZONA_JD1_ENA, 0);
 	arizona_clk32k_disable(arizona);
 	extcon_dev_unregister(&info->edev);

 	return 0;
 }

 static struct platform_driver arizona_extcon_driver = {
 	.driver		= {
 		.name	= "arizona-extcon",
 		.owner	= THIS_MODULE,
 	},
 	.probe		= arizona_extcon_probe,
 	.remove		= __devexit_p(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");
	/*
	* 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/platform_device.h>
	#include <linux/pm_runtime.h>
	#include <linux/regulator/consumer.h>
	#include <linux/extcon.h>

	#include <linux/mfd/arizona/core.h>
	#include <linux/mfd/arizona/pdata.h>
	#include <linux/mfd/arizona/registers.h>

	struct arizona_extcon_info {
	struct device *dev;
	struct arizona *arizona;
	struct mutex lock;
	struct regulator *micvdd;

	int micd_mode;
	const struct arizona_micd_config *micd_modes;
	int micd_num_modes;

	bool micd_reva;

	bool mic;
	bool detecting;
	int jack_flips;

	struct extcon_dev edev;
	};

	static const struct arizona_micd_config micd_default_modes[] = {
	{ ARIZONA_ACCDET_SRC, 1 << ARIZONA_MICD_BIAS_SRC_SHIFT, 0 },
	{ 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 },
	};

	#define ARIZONA_CABLE_MECHANICAL 0
	#define ARIZONA_CABLE_MICROPHONE 1
	#define ARIZONA_CABLE_HEADPHONE 2

	static const char *arizona_cable[] = {
	"Mechanical",
	"Microphone",
	"Headphone",
	NULL,
	};

	static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
	{
	struct arizona *arizona = info->arizona;

	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);
	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 void arizona_start_mic(struct arizona_extcon_info *info)
	{
	struct arizona *arizona = info->arizona;
	bool change;
	int ret;

	info->detecting = true;
	info->mic = false;
	info->jack_flips = 0;

	/* Microphone detection can't use idle mode */
	pm_runtime_get(info->dev);

	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_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;
	bool change;

	regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
	ARIZONA_MICD_ENA, 0,
	&change);

	if (info->micd_reva) {
	regmap_write(arizona->regmap, 0x80, 0x3);
	regmap_write(arizona->regmap, 0x294, 2);
	regmap_write(arizona->regmap, 0x80, 0x0);
	}

	if (change) {
	regulator_disable(info->micvdd);
	pm_runtime_put_autosuspend(info->dev);
	}
	}

	static irqreturn_t arizona_micdet(int irq, void *data)
	{
	struct arizona_extcon_info *info = data;
	struct arizona *arizona = info->arizona;
	unsigned int val;
	int ret;

	mutex_lock(&info->lock);

	ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
	if (ret != 0) {
	dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret);
	return IRQ_NONE;
	}

	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 IRQ_NONE;
	}

	/* 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 & 0x400)) {
	ret = extcon_update_state(&info->edev,
	1 << ARIZONA_CABLE_MICROPHONE \|
	1 << ARIZONA_CABLE_HEADPHONE,
	1 << ARIZONA_CABLE_MICROPHONE \|
	1 << ARIZONA_CABLE_HEADPHONE);

	if (ret != 0)
	dev_err(arizona->dev, "Headset report failed: %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 & 0x3f8)) {
	info->jack_flips++;

	if (info->jack_flips >= info->micd_num_modes) {
	dev_dbg(arizona->dev, "Detected headphone\n");
	info->detecting = false;
	arizona_stop_mic(info);

	ret = extcon_set_cable_state_(&info->edev,
	ARIZONA_CABLE_HEADPHONE,
	true);
	if (ret != 0)
	dev_err(arizona->dev,
	"Headphone report failed: %d\n",
	ret);
	} 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, the
	* button reporting is stubbed out for now.
	*/
	if (val & 0x3fc) {
	if (info->mic) {
	dev_dbg(arizona->dev, "Mic button detected\n");

	} else if (info->detecting) {
	dev_dbg(arizona->dev, "Headphone detected\n");
	info->detecting = false;
	arizona_stop_mic(info);

	ret = extcon_set_cable_state_(&info->edev,
	ARIZONA_CABLE_HEADPHONE,
	true);
	if (ret != 0)
	dev_err(arizona->dev,
	"Headphone report failed: %d\n",
	ret);
	} else {
	dev_warn(arizona->dev, "Button with no mic: %x\n",
	val);
	}
	} else {
	dev_dbg(arizona->dev, "Mic button released\n");
	}

	handled:
	pm_runtime_mark_last_busy(info->dev);
	mutex_unlock(&info->lock);

	return IRQ_HANDLED;
	}

	static irqreturn_t arizona_jackdet(int irq, void *data)
	{
	struct arizona_extcon_info *info = data;
	struct arizona *arizona = info->arizona;
	unsigned int val;
	int ret;

	pm_runtime_get_sync(info->dev);

	mutex_lock(&info->lock);

	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;
	}

	if (val & ARIZONA_JD1_STS) {
	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);

	arizona_start_mic(info);
	} else {
	dev_dbg(arizona->dev, "Detected jack removal\n");

	arizona_stop_mic(info);

	ret = extcon_update_state(&info->edev, 0xffffffff, 0);
	if (ret != 0)
	dev_err(arizona->dev, "Removal report failed: %d\n",
	ret);
	}

	mutex_unlock(&info->lock);

	pm_runtime_mark_last_busy(info->dev);
	pm_runtime_put_autosuspend(info->dev);

	return IRQ_HANDLED;
	}

	static int __devinit arizona_extcon_probe(struct platform_device *pdev)
	{
	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
	struct arizona_pdata *pdata;
	struct arizona_extcon_info *info;
	int ret, mode;

	pdata = dev_get_platdata(arizona->dev);

	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
	if (!info) {
	dev_err(&pdev->dev, "failed to allocate memory\n");
	ret = -ENOMEM;
	goto err;
	}

	info->micvdd = devm_regulator_get(arizona->dev, "MICVDD");
	if (IS_ERR(info->micvdd)) {
	ret = PTR_ERR(info->micvdd);
	dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
	goto err;
	}

	mutex_init(&info->lock);
	info->arizona = arizona;
	info->dev = &pdev->dev;
	info->detecting = true;
	platform_set_drvdata(pdev, info);

	switch (arizona->type) {
	case WM5102:
	switch (arizona->rev) {
	case 0:
	info->micd_reva = true;
	break;
	default:
	break;
	}
	break;
	default:
	break;
	}

	info->edev.name = "Headset Jack";
	info->edev.supported_cable = arizona_cable;

	ret = extcon_dev_register(&info->edev, arizona->dev);
	if (ret < 0) {
	dev_err(arizona->dev, "extcon_dev_regster() failed: %d\n",
	ret);
	goto err;
	}

	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;
	}
	}

	arizona_extcon_set_mode(info, 0);

	pm_runtime_enable(&pdev->dev);
	pm_runtime_idle(&pdev->dev);
	pm_runtime_get_sync(&pdev->dev);

	ret = arizona_request_irq(arizona, ARIZONA_IRQ_JD_RISE,
	"JACKDET rise", arizona_jackdet, info);
	if (ret != 0) {
	dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
	ret);
	goto err_register;
	}

	ret = arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_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, ARIZONA_IRQ_JD_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, ARIZONA_IRQ_JD_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;
	}

	regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
	ARIZONA_MICD_BIAS_STARTTIME_MASK \|
	ARIZONA_MICD_RATE_MASK,
	7 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT \|
	8 << ARIZONA_MICD_RATE_SHIFT);

	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);

	pm_runtime_put(&pdev->dev);

	return 0;

	err_fall_wake:
	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0);
	err_fall:
	arizona_free_irq(arizona, ARIZONA_IRQ_JD_FALL, info);
	err_rise_wake:
	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0);
	err_rise:
	arizona_free_irq(arizona, ARIZONA_IRQ_JD_RISE, info);
	err_register:
	pm_runtime_disable(&pdev->dev);
	extcon_dev_unregister(&info->edev);
	err:
	return ret;
	}

	static int __devexit arizona_extcon_remove(struct platform_device *pdev)
	{
	struct arizona_extcon_info *info = platform_get_drvdata(pdev);
	struct arizona *arizona = info->arizona;

	pm_runtime_disable(&pdev->dev);

	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0);
	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0);
	arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
	arizona_free_irq(arizona, ARIZONA_IRQ_JD_RISE, info);
	arizona_free_irq(arizona, ARIZONA_IRQ_JD_FALL, info);
	regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
	ARIZONA_JD1_ENA, 0);
	arizona_clk32k_disable(arizona);
	extcon_dev_unregister(&info->edev);

	return 0;
	}

	static struct platform_driver arizona_extcon_driver = {
	.driver = {
	.name = "arizona-extcon",
	.owner = THIS_MODULE,
	},
	.probe = arizona_extcon_probe,
	.remove = __devexit_p(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");