[mirror_ubuntu-bionic-kernel.git] / drivers / extcon / extcon-arizona.c

/*
 * 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 "Mechanical"
#define ARIZONA_CABLE_HEADPHONE  "Headphone"
#define ARIZONA_CABLE_HEADSET    "Headset"

static const char *arizona_cable[] = {
	ARIZONA_CABLE_MECHANICAL,
	ARIZONA_CABLE_HEADSET,
	ARIZONA_CABLE_HEADPHONE,
	NULL,
};

static const u32 arizona_exclusions[] = {
	0x6,   /* Headphone and headset */
	0,
};

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_set_cable_state(&info->edev,
					     ARIZONA_CABLE_HEADSET, true);

		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;
			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;
	info->edev.mutually_exclusive = arizona_exclusions;

	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");
Commit	Line	Data
f2c32a88 MB	1	/*
	2	* extcon-arizona.c - Extcon driver Wolfson Arizona devices
	3	*
	4	* Copyright (C) 2012 Wolfson Microelectronics plc
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*/
	16
	17	#include <linux/kernel.h>
	18	#include <linux/module.h>
	19	#include <linux/i2c.h>
	20	#include <linux/slab.h>
	21	#include <linux/interrupt.h>
	22	#include <linux/err.h>
	23	#include <linux/gpio.h>
	24	#include <linux/platform_device.h>
	25	#include <linux/pm_runtime.h>
	26	#include <linux/regulator/consumer.h>
	27	#include <linux/extcon.h>
	28
	29	#include <linux/mfd/arizona/core.h>
	30	#include <linux/mfd/arizona/pdata.h>
	31	#include <linux/mfd/arizona/registers.h>
	32
	33	struct arizona_extcon_info {
	34	struct device *dev;
	35	struct arizona *arizona;
	36	struct mutex lock;
	37	struct regulator *micvdd;
	38
	39	int micd_mode;
	40	const struct arizona_micd_config *micd_modes;
	41	int micd_num_modes;
	42
	43	bool micd_reva;
	44
	45	bool mic;
	46	bool detecting;
	47	int jack_flips;
	48
	49	struct extcon_dev edev;
	50	};
	51
	52	static const struct arizona_micd_config micd_default_modes[] = {
	53	{ ARIZONA_ACCDET_SRC, 1 << ARIZONA_MICD_BIAS_SRC_SHIFT, 0 },
	54	{ 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 },
	55	};
	56
	57	#define ARIZONA_CABLE_MECHANICAL "Mechanical"
	58	#define ARIZONA_CABLE_HEADPHONE "Headphone"
	59	#define ARIZONA_CABLE_HEADSET "Headset"
	60
	61	static const char *arizona_cable[] = {
	62	ARIZONA_CABLE_MECHANICAL,
	63	ARIZONA_CABLE_HEADSET,
	64	ARIZONA_CABLE_HEADPHONE,
65	NULL,
66	};
67
68	static const u32 arizona_exclusions[] = {
69	0x6, /* Headphone and headset */
70	0,
71	};
72
73	static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
74	{
75	struct arizona *arizona = info->arizona;
76
77	gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
78	info->micd_modes[mode].gpio);
79	regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
80	ARIZONA_MICD_BIAS_SRC_MASK,
81	info->micd_modes[mode].bias);
82	regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
83	ARIZONA_ACCDET_SRC, info->micd_modes[mode].src);
84
85	info->micd_mode = mode;
86
87	dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode);
88	}
89
90	static void arizona_start_mic(struct arizona_extcon_info *info)
91	{
92	struct arizona *arizona = info->arizona;
93	bool change;
94	int ret;
95
96	info->detecting = true;
97	info->mic = false;
98	info->jack_flips = 0;
99
100	/* Microphone detection can't use idle mode */
101	pm_runtime_get(info->dev);
102
103	ret = regulator_enable(info->micvdd);
104	if (ret != 0) {
105	dev_err(arizona->dev, "Failed to enable MICVDD: %d\n",
106	ret);
107	}
108
109	if (info->micd_reva) {
110	regmap_write(arizona->regmap, 0x80, 0x3);
111	regmap_write(arizona->regmap, 0x294, 0);
112	regmap_write(arizona->regmap, 0x80, 0x0);
113	}
114
115	regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
116	ARIZONA_MICD_ENA, ARIZONA_MICD_ENA,
117	&change);
118	if (!change) {
119	regulator_disable(info->micvdd);
120	pm_runtime_put_autosuspend(info->dev);
121	}
122	}
123
124	static void arizona_stop_mic(struct arizona_extcon_info *info)
125	{
126	struct arizona *arizona = info->arizona;
127	bool change;
128
129	regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
130	ARIZONA_MICD_ENA, 0,
131	&change);
132
133	if (info->micd_reva) {
134	regmap_write(arizona->regmap, 0x80, 0x3);
135	regmap_write(arizona->regmap, 0x294, 2);
136	regmap_write(arizona->regmap, 0x80, 0x0);
137	}
138
139	if (change) {
140	regulator_disable(info->micvdd);
141	pm_runtime_put_autosuspend(info->dev);
142	}
143	}
144
145	static irqreturn_t arizona_micdet(int irq, void *data)
146	{
147	struct arizona_extcon_info *info = data;
148	struct arizona *arizona = info->arizona;
149	unsigned int val;
150	int ret;
151
152	mutex_lock(&info->lock);
153
154	ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
155	if (ret != 0) {
156	dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret);
157	return IRQ_NONE;
158	}
159
160	dev_dbg(arizona->dev, "MICDET: %x\n", val);
161
162	if (!(val & ARIZONA_MICD_VALID)) {
163	dev_warn(arizona->dev, "Microphone detection state invalid\n");
164	mutex_unlock(&info->lock);
165	return IRQ_NONE;
166	}
167
168	/* Due to jack detect this should never happen */
169	if (!(val & ARIZONA_MICD_STS)) {
170	dev_warn(arizona->dev, "Detected open circuit\n");
171	info->detecting = false;
172	goto handled;
173	}
174
175	/* If we got a high impedence we should have a headset, report it. */
176	if (info->detecting && (val & 0x400)) {
177	ret = extcon_set_cable_state(&info->edev,
178	ARIZONA_CABLE_HEADSET, true);
179
180	if (ret != 0)
181	dev_err(arizona->dev, "Headset report failed: %d\n",
182	ret);
183
184	info->mic = true;
185	info->detecting = false;
186	goto handled;
187	}
188
189	/* If we detected a lower impedence during initial startup
190	* then we probably have the wrong polarity, flip it. Don't
191	* do this for the lowest impedences to speed up detection of
192	* plain headphones. If both polarities report a low
193	* impedence then give up and report headphones.
194	*/
195	if (info->detecting && (val & 0x3f8)) {
196	info->jack_flips++;
197
198	if (info->jack_flips >= info->micd_num_modes) {
199	dev_dbg(arizona->dev, "Detected headphone\n");
200	info->detecting = false;
201	ret = extcon_set_cable_state(&info->edev,
202	ARIZONA_CABLE_HEADPHONE,
203	true);
204	if (ret != 0)
205	dev_err(arizona->dev,
206	"Headphone report failed: %d\n",
207	ret);
208	} else {
209	info->micd_mode++;
210	if (info->micd_mode == info->micd_num_modes)
211	info->micd_mode = 0;
212	arizona_extcon_set_mode(info, info->micd_mode);
213
214	info->jack_flips++;
215	}
216
217	goto handled;
218	}
219
220	/*
221	* If we're still detecting and we detect a short then we've
222	* got a headphone. Otherwise it's a button press, the
223	* button reporting is stubbed out for now.
224	*/
225	if (val & 0x3fc) {
226	if (info->mic) {
227	dev_dbg(arizona->dev, "Mic button detected\n");
228
229	} else if (info->detecting) {
230	dev_dbg(arizona->dev, "Headphone detected\n");
231	info->detecting = false;
232	arizona_stop_mic(info);
233
234	ret = extcon_set_cable_state(&info->edev,
235	ARIZONA_CABLE_HEADPHONE,
236	true);
237	if (ret != 0)
238	dev_err(arizona->dev,
239	"Headphone report failed: %d\n",
240	ret);
241	} else {
242	dev_warn(arizona->dev, "Button with no mic: %x\n",
243	val);
244	}
245	} else {
246	dev_dbg(arizona->dev, "Mic button released\n");
247	}
248
249	handled:
250	pm_runtime_mark_last_busy(info->dev);
251	mutex_unlock(&info->lock);
252
253	return IRQ_HANDLED;
254	}
255
256	static irqreturn_t arizona_jackdet(int irq, void *data)
257	{
258	struct arizona_extcon_info *info = data;
259	struct arizona *arizona = info->arizona;
260	unsigned int val;
261	int ret;
262
263	pm_runtime_get_sync(info->dev);
264
265	mutex_lock(&info->lock);
266
267	ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
268	if (ret != 0) {
269	dev_err(arizona->dev, "Failed to read jackdet status: %d\n",
270	ret);
271	mutex_unlock(&info->lock);
272	pm_runtime_put_autosuspend(info->dev);
273	return IRQ_NONE;
274	}
275
276	if (val & ARIZONA_JD1_STS) {
277	dev_dbg(arizona->dev, "Detected jack\n");
278	ret = extcon_set_cable_state(&info->edev,
279	ARIZONA_CABLE_MECHANICAL, true);
280
281	if (ret != 0)
282	dev_err(arizona->dev, "Mechanical report failed: %d\n",
283	ret);
284
285	arizona_start_mic(info);
286	} else {
287	dev_dbg(arizona->dev, "Detected jack removal\n");
288
289	arizona_stop_mic(info);
290
291	ret = extcon_update_state(&info->edev, 0xffffffff, 0);
292	if (ret != 0)
293	dev_err(arizona->dev, "Removal report failed: %d\n",
294	ret);
295	}
296
297	mutex_unlock(&info->lock);
298
299	pm_runtime_mark_last_busy(info->dev);
300	pm_runtime_put_autosuspend(info->dev);
301
302	return IRQ_HANDLED;
303	}
304
305	static int __devinit arizona_extcon_probe(struct platform_device *pdev)
306	{
307	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
308	struct arizona_pdata *pdata;
309	struct arizona_extcon_info *info;
310	int ret, mode;
311
312	pdata = dev_get_platdata(arizona->dev);
313
314	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
315	if (!info) {
316	dev_err(&pdev->dev, "failed to allocate memory\n");
317	ret = -ENOMEM;
318	goto err;
319	}
320
321	info->micvdd = devm_regulator_get(arizona->dev, "MICVDD");
322	if (IS_ERR(info->micvdd)) {
323	ret = PTR_ERR(info->micvdd);
324	dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
325	goto err;
326	}
327
328	mutex_init(&info->lock);
329	info->arizona = arizona;
330	info->dev = &pdev->dev;
331	info->detecting = true;
332	platform_set_drvdata(pdev, info);
333
334	switch (arizona->type) {
335	case WM5102:
336	switch (arizona->rev) {
337	case 0:
338	info->micd_reva = true;
339	break;
340	default:
341	break;
342	}
343	break;
344	default:
345	break;
346	}
347
348	info->edev.name = "Headset Jack";
349	info->edev.supported_cable = arizona_cable;
350	info->edev.mutually_exclusive = arizona_exclusions;
351
352	ret = extcon_dev_register(&info->edev, arizona->dev);
353	if (ret < 0) {
354	dev_err(arizona->dev, "extcon_dev_regster() failed: %d\n",
355	ret);
356	goto err;
357	}
358
359	if (pdata->num_micd_configs) {
360	info->micd_modes = pdata->micd_configs;
361	info->micd_num_modes = pdata->num_micd_configs;
362	} else {
363	info->micd_modes = micd_default_modes;
364	info->micd_num_modes = ARRAY_SIZE(micd_default_modes);
365	}
366
367	if (arizona->pdata.micd_pol_gpio > 0) {
368	if (info->micd_modes[0].gpio)
369	mode = GPIOF_OUT_INIT_HIGH;
370	else
371	mode = GPIOF_OUT_INIT_LOW;
372
373	ret = devm_gpio_request_one(&pdev->dev,
374	arizona->pdata.micd_pol_gpio,
375	mode,
376	"MICD polarity");
377	if (ret != 0) {
378	dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
379	arizona->pdata.micd_pol_gpio, ret);
380	goto err_register;
381	}
382	}
383
384	arizona_extcon_set_mode(info, 0);
385
386	pm_runtime_enable(&pdev->dev);
387	pm_runtime_idle(&pdev->dev);
388	pm_runtime_get_sync(&pdev->dev);
389
390	ret = arizona_request_irq(arizona, ARIZONA_IRQ_JD_RISE,
391	"JACKDET rise", arizona_jackdet, info);
392	if (ret != 0) {
393	dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
394	ret);
395	goto err_register;
396	}
397
398	ret = arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 1);
399	if (ret != 0) {
400	dev_err(&pdev->dev, "Failed to set JD rise IRQ wake: %d\n",
401	ret);
402	goto err_rise;
403	}
404
405	ret = arizona_request_irq(arizona, ARIZONA_IRQ_JD_FALL,
406	"JACKDET fall", arizona_jackdet, info);
407	if (ret != 0) {
408	dev_err(&pdev->dev, "Failed to get JD fall IRQ: %d\n", ret);
409	goto err_rise_wake;
410	}
411
412	ret = arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 1);
413	if (ret != 0) {
414	dev_err(&pdev->dev, "Failed to set JD fall IRQ wake: %d\n",
415	ret);
416	goto err_fall;
417	}
418
419	ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET,
420	"MICDET", arizona_micdet, info);
421	if (ret != 0) {
422	dev_err(&pdev->dev, "Failed to get MICDET IRQ: %d\n", ret);
423	goto err_fall_wake;
424	}
425
426	regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
427	ARIZONA_MICD_BIAS_STARTTIME_MASK \|
428	ARIZONA_MICD_RATE_MASK,
429	7 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT \|
430	8 << ARIZONA_MICD_RATE_SHIFT);
431
432	arizona_clk32k_enable(arizona);
433	regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE,
434	ARIZONA_JD1_DB, ARIZONA_JD1_DB);
435	regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
436	ARIZONA_JD1_ENA, ARIZONA_JD1_ENA);
437
438	pm_runtime_put(&pdev->dev);
439
440	return 0;
441
442	err_fall_wake:
443	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0);
444	err_fall:
445	arizona_free_irq(arizona, ARIZONA_IRQ_JD_FALL, info);
446	err_rise_wake:
447	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0);
448	err_rise:
449	arizona_free_irq(arizona, ARIZONA_IRQ_JD_RISE, info);
450	err_register:
451	pm_runtime_disable(&pdev->dev);
452	extcon_dev_unregister(&info->edev);
453	err:
454	return ret;
455	}
456
457	static int __devexit arizona_extcon_remove(struct platform_device *pdev)
458	{
459	struct arizona_extcon_info *info = platform_get_drvdata(pdev);
460	struct arizona *arizona = info->arizona;
461
462	pm_runtime_disable(&pdev->dev);
463
464	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0);
465	arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0);
466	arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
467	arizona_free_irq(arizona, ARIZONA_IRQ_JD_RISE, info);
468	arizona_free_irq(arizona, ARIZONA_IRQ_JD_FALL, info);
469	regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
470	ARIZONA_JD1_ENA, 0);
471	arizona_clk32k_disable(arizona);
472	extcon_dev_unregister(&info->edev);
473
474	return 0;
475	}
476
477	static struct platform_driver arizona_extcon_driver = {
478	.driver = {
479	.name = "arizona-extcon",
480	.owner = THIS_MODULE,
481	},
482	.probe = arizona_extcon_probe,
483	.remove = __devexit_p(arizona_extcon_remove),
484	};
485
486	module_platform_driver(arizona_extcon_driver);
487
488	MODULE_DESCRIPTION("Arizona Extcon driver");
489	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
490	MODULE_LICENSE("GPL");
491	MODULE_ALIAS("platform:extcon-arizona");