[linux-2.6-block.git] / sound / soc / codecs / ts3a227e.c

/*
 * TS3A227E Autonomous Audio Accessory Detection and Configuration Switch
 *
 * Copyright (C) 2014 Google, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/of_gpio.h>
#include <linux/regmap.h>

#include <sound/core.h>
#include <sound/jack.h>
#include <sound/soc.h>

#include "ts3a227e.h"

struct ts3a227e {
	struct device *dev;
	struct regmap *regmap;
	struct snd_soc_jack *jack;
	bool plugged;
	bool mic_present;
	unsigned int buttons_held;
	int irq;
};

/* Button values to be reported on the jack */
static const int ts3a227e_buttons[] = {
	SND_JACK_BTN_0,
	SND_JACK_BTN_1,
	SND_JACK_BTN_2,
	SND_JACK_BTN_3,
};

#define TS3A227E_NUM_BUTTONS 4
#define TS3A227E_JACK_MASK (SND_JACK_HEADPHONE | \
			    SND_JACK_MICROPHONE | \
			    SND_JACK_BTN_0 | \
			    SND_JACK_BTN_1 | \
			    SND_JACK_BTN_2 | \
			    SND_JACK_BTN_3)

/* TS3A227E registers */
#define TS3A227E_REG_DEVICE_ID		0x00
#define TS3A227E_REG_INTERRUPT		0x01
#define TS3A227E_REG_KP_INTERRUPT	0x02
#define TS3A227E_REG_INTERRUPT_DISABLE	0x03
#define TS3A227E_REG_SETTING_1		0x04
#define TS3A227E_REG_SETTING_2		0x05
#define TS3A227E_REG_SETTING_3		0x06
#define TS3A227E_REG_SWITCH_CONTROL_1	0x07
#define TS3A227E_REG_SWITCH_CONTROL_2	0x08
#define TS3A227E_REG_SWITCH_STATUS_1	0x09
#define TS3A227E_REG_SWITCH_STATUS_2	0x0a
#define TS3A227E_REG_ACCESSORY_STATUS	0x0b
#define TS3A227E_REG_ADC_OUTPUT		0x0c
#define TS3A227E_REG_KP_THRESHOLD_1	0x0d
#define TS3A227E_REG_KP_THRESHOLD_2	0x0e
#define TS3A227E_REG_KP_THRESHOLD_3	0x0f

/* TS3A227E_REG_INTERRUPT 0x01 */
#define INS_REM_EVENT 0x01
#define DETECTION_COMPLETE_EVENT 0x02

/* TS3A227E_REG_KP_INTERRUPT 0x02 */
#define PRESS_MASK(idx) (0x01 << (2 * (idx)))
#define RELEASE_MASK(idx) (0x02 << (2 * (idx)))

/* TS3A227E_REG_INTERRUPT_DISABLE 0x03 */
#define INS_REM_INT_DISABLE 0x01
#define DETECTION_COMPLETE_INT_DISABLE 0x02
#define ADC_COMPLETE_INT_DISABLE 0x04
#define INTB_DISABLE 0x08

/* TS3A227E_REG_SETTING_2 0x05 */
#define KP_ENABLE 0x04

/* TS3A227E_REG_SETTING_3 0x06 */
#define MICBIAS_SETTING_SFT (3)
#define MICBIAS_SETTING_MASK (0x7 << MICBIAS_SETTING_SFT)

/* TS3A227E_REG_ACCESSORY_STATUS  0x0b */
#define TYPE_3_POLE 0x01
#define TYPE_4_POLE_OMTP 0x02
#define TYPE_4_POLE_STANDARD 0x04
#define JACK_INSERTED 0x08
#define EITHER_MIC_MASK (TYPE_4_POLE_OMTP | TYPE_4_POLE_STANDARD)

static const struct reg_default ts3a227e_reg_defaults[] = {
	{ TS3A227E_REG_DEVICE_ID, 0x10 },
	{ TS3A227E_REG_INTERRUPT, 0x00 },
	{ TS3A227E_REG_KP_INTERRUPT, 0x00 },
	{ TS3A227E_REG_INTERRUPT_DISABLE, 0x08 },
	{ TS3A227E_REG_SETTING_1, 0x23 },
	{ TS3A227E_REG_SETTING_2, 0x00 },
	{ TS3A227E_REG_SETTING_3, 0x0e },
	{ TS3A227E_REG_SWITCH_CONTROL_1, 0x00 },
	{ TS3A227E_REG_SWITCH_CONTROL_2, 0x00 },
	{ TS3A227E_REG_SWITCH_STATUS_1, 0x0c },
	{ TS3A227E_REG_SWITCH_STATUS_2, 0x00 },
	{ TS3A227E_REG_ACCESSORY_STATUS, 0x00 },
	{ TS3A227E_REG_ADC_OUTPUT, 0x00 },
	{ TS3A227E_REG_KP_THRESHOLD_1, 0x20 },
	{ TS3A227E_REG_KP_THRESHOLD_2, 0x40 },
	{ TS3A227E_REG_KP_THRESHOLD_3, 0x68 },
};

static bool ts3a227e_readable_reg(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case TS3A227E_REG_DEVICE_ID ... TS3A227E_REG_KP_THRESHOLD_3:
		return true;
	default:
		return false;
	}
}

static bool ts3a227e_writeable_reg(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case TS3A227E_REG_INTERRUPT_DISABLE ... TS3A227E_REG_SWITCH_CONTROL_2:
	case TS3A227E_REG_KP_THRESHOLD_1 ... TS3A227E_REG_KP_THRESHOLD_3:
		return true;
	default:
		return false;
	}
}

static bool ts3a227e_volatile_reg(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case TS3A227E_REG_INTERRUPT ... TS3A227E_REG_INTERRUPT_DISABLE:
	case TS3A227E_REG_SETTING_2:
	case TS3A227E_REG_SWITCH_STATUS_1 ... TS3A227E_REG_ADC_OUTPUT:
		return true;
	default:
		return false;
	}
}

static void ts3a227e_jack_report(struct ts3a227e *ts3a227e)
{
	unsigned int i;
	int report = 0;

	if (!ts3a227e->jack)
		return;

	if (ts3a227e->plugged)
		report = SND_JACK_HEADPHONE;
	if (ts3a227e->mic_present)
		report |= SND_JACK_MICROPHONE;
	for (i = 0; i < TS3A227E_NUM_BUTTONS; i++) {
		if (ts3a227e->buttons_held & (1 << i))
			report |= ts3a227e_buttons[i];
	}
	snd_soc_jack_report(ts3a227e->jack, report, TS3A227E_JACK_MASK);
}

static void ts3a227e_new_jack_state(struct ts3a227e *ts3a227e, unsigned acc_reg)
{
	bool plugged, mic_present;

	plugged = !!(acc_reg & JACK_INSERTED);
	mic_present = plugged && !!(acc_reg & EITHER_MIC_MASK);

	ts3a227e->plugged = plugged;

	if (mic_present != ts3a227e->mic_present) {
		ts3a227e->mic_present = mic_present;
		ts3a227e->buttons_held = 0;
		if (mic_present) {
			/* Enable key press detection. */
			regmap_update_bits(ts3a227e->regmap,
					   TS3A227E_REG_SETTING_2,
					   KP_ENABLE, KP_ENABLE);
		}
	}
}

static irqreturn_t ts3a227e_interrupt(int irq, void *data)
{
	struct ts3a227e *ts3a227e = (struct ts3a227e *)data;
	struct regmap *regmap = ts3a227e->regmap;
	unsigned int int_reg, kp_int_reg, acc_reg, i;
	struct device *dev = ts3a227e->dev;
	int ret;

	/* Check for plug/unplug. */
	ret = regmap_read(regmap, TS3A227E_REG_INTERRUPT, &int_reg);
	if (ret) {
		dev_err(dev, "failed to clear interrupt ret=%d\n", ret);
		return IRQ_NONE;
	}

	if (int_reg & (DETECTION_COMPLETE_EVENT | INS_REM_EVENT)) {
		regmap_read(regmap, TS3A227E_REG_ACCESSORY_STATUS, &acc_reg);
		ts3a227e_new_jack_state(ts3a227e, acc_reg);
	}

	/* Report any key events. */
	ret = regmap_read(regmap, TS3A227E_REG_KP_INTERRUPT, &kp_int_reg);
	if (ret) {
		dev_err(dev, "failed to clear key interrupt ret=%d\n", ret);
		return IRQ_NONE;
	}

	for (i = 0; i < TS3A227E_NUM_BUTTONS; i++) {
		if (kp_int_reg & PRESS_MASK(i))
			ts3a227e->buttons_held |= (1 << i);
		if (kp_int_reg & RELEASE_MASK(i))
			ts3a227e->buttons_held &= ~(1 << i);
	}

	ts3a227e_jack_report(ts3a227e);

	return IRQ_HANDLED;
}

/**
 * ts3a227e_enable_jack_detect - Specify a jack for event reporting
 *
 * @component:  component to register the jack with
 * @jack: jack to use to report headset and button events on
 *
 * After this function has been called the headset insert/remove and button
 * events 0-3 will be routed to the given jack.  Jack can be null to stop
 * reporting.
 */
int ts3a227e_enable_jack_detect(struct snd_soc_component *component,
				struct snd_soc_jack *jack)
{
	struct ts3a227e *ts3a227e = snd_soc_component_get_drvdata(component);

	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_MEDIA);
	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
	snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);

	ts3a227e->jack = jack;
	ts3a227e_jack_report(ts3a227e);

	return 0;
}
EXPORT_SYMBOL_GPL(ts3a227e_enable_jack_detect);

static struct snd_soc_component_driver ts3a227e_soc_driver;

static const struct regmap_config ts3a227e_regmap_config = {
	.val_bits = 8,
	.reg_bits = 8,

	.max_register = TS3A227E_REG_KP_THRESHOLD_3,
	.readable_reg = ts3a227e_readable_reg,
	.writeable_reg = ts3a227e_writeable_reg,
	.volatile_reg = ts3a227e_volatile_reg,

	.cache_type = REGCACHE_RBTREE,
	.reg_defaults = ts3a227e_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(ts3a227e_reg_defaults),
};

static int ts3a227e_parse_device_property(struct ts3a227e *ts3a227e,
				struct device *dev)
{
	u32 micbias;
	int err;

	err = device_property_read_u32(dev, "ti,micbias", &micbias);
	if (!err) {
		regmap_update_bits(ts3a227e->regmap, TS3A227E_REG_SETTING_3,
			MICBIAS_SETTING_MASK,
			(micbias & 0x07) << MICBIAS_SETTING_SFT);
	}

	return 0;
}

static int ts3a227e_i2c_probe(struct i2c_client *i2c,
			      const struct i2c_device_id *id)
{
	struct ts3a227e *ts3a227e;
	struct device *dev = &i2c->dev;
	int ret;
	unsigned int acc_reg;

	ts3a227e = devm_kzalloc(&i2c->dev, sizeof(*ts3a227e), GFP_KERNEL);
	if (ts3a227e == NULL)
		return -ENOMEM;

	i2c_set_clientdata(i2c, ts3a227e);
	ts3a227e->dev = dev;
	ts3a227e->irq = i2c->irq;

	ts3a227e->regmap = devm_regmap_init_i2c(i2c, &ts3a227e_regmap_config);
	if (IS_ERR(ts3a227e->regmap))
		return PTR_ERR(ts3a227e->regmap);

	ret = ts3a227e_parse_device_property(ts3a227e, dev);
	if (ret) {
		dev_err(dev, "Failed to parse device property: %d\n", ret);
		return ret;
	}

	ret = devm_request_threaded_irq(dev, i2c->irq, NULL, ts3a227e_interrupt,
					IRQF_TRIGGER_LOW | IRQF_ONESHOT,
					"TS3A227E", ts3a227e);
	if (ret) {
		dev_err(dev, "Cannot request irq %d (%d)\n", i2c->irq, ret);
		return ret;
	}

	ret = devm_snd_soc_register_component(&i2c->dev, &ts3a227e_soc_driver,
					      NULL, 0);
	if (ret)
		return ret;

	/* Enable interrupts except for ADC complete. */
	regmap_update_bits(ts3a227e->regmap, TS3A227E_REG_INTERRUPT_DISABLE,
			   INTB_DISABLE | ADC_COMPLETE_INT_DISABLE,
			   ADC_COMPLETE_INT_DISABLE);

	/* Read jack status because chip might not trigger interrupt at boot. */
	regmap_read(ts3a227e->regmap, TS3A227E_REG_ACCESSORY_STATUS, &acc_reg);
	ts3a227e_new_jack_state(ts3a227e, acc_reg);
	ts3a227e_jack_report(ts3a227e);

	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int ts3a227e_suspend(struct device *dev)
{
	struct ts3a227e *ts3a227e = dev_get_drvdata(dev);

	dev_dbg(ts3a227e->dev, "suspend disable irq\n");
	disable_irq(ts3a227e->irq);

	return 0;
}

static int ts3a227e_resume(struct device *dev)
{
	struct ts3a227e *ts3a227e = dev_get_drvdata(dev);

	dev_dbg(ts3a227e->dev, "resume enable irq\n");
	enable_irq(ts3a227e->irq);

	return 0;
}
#endif

static const struct dev_pm_ops ts3a227e_pm = {
	SET_SYSTEM_SLEEP_PM_OPS(ts3a227e_suspend, ts3a227e_resume)
};

static const struct i2c_device_id ts3a227e_i2c_ids[] = {
	{ "ts3a227e", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, ts3a227e_i2c_ids);

static const struct of_device_id ts3a227e_of_match[] = {
	{ .compatible = "ti,ts3a227e", },
	{ }
};
MODULE_DEVICE_TABLE(of, ts3a227e_of_match);

static struct i2c_driver ts3a227e_driver = {
	.driver = {
		.name = "ts3a227e",
		.pm = &ts3a227e_pm,
		.of_match_table = of_match_ptr(ts3a227e_of_match),
	},
	.probe = ts3a227e_i2c_probe,
	.id_table = ts3a227e_i2c_ids,
};
module_i2c_driver(ts3a227e_driver);

MODULE_DESCRIPTION("ASoC ts3a227e driver");
MODULE_AUTHOR("Dylan Reid <dgreid@chromium.org>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
2880fc87 DR	1	/*
	2	* TS3A227E Autonomous Audio Accessory Detection and Configuration Switch
	3	*
	4	* Copyright (C) 2014 Google, Inc.
	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 version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10
	11	#include <linux/gpio.h>
	12	#include <linux/i2c.h>
	13	#include <linux/init.h>
	14	#include <linux/input.h>
	15	#include <linux/module.h>
	16	#include <linux/of_gpio.h>
	17	#include <linux/regmap.h>
	18
	19	#include <sound/core.h>
	20	#include <sound/jack.h>
	21	#include <sound/soc.h>
	22
e7a0332f LP	23	#include "ts3a227e.h"
e7a0332f LP	24
2880fc87	25	struct ts3a227e {
c4a99a4b	26	struct device *dev;
2880fc87 DR	27	struct regmap *regmap;
	28	struct snd_soc_jack *jack;
	29	bool plugged;
	30	bool mic_present;
	31	unsigned int buttons_held;
c4a99a4b	32	int irq;
2880fc87 DR	33	};
	34
	35	/* Button values to be reported on the jack */
	36	static const int ts3a227e_buttons[] = {
	37	SND_JACK_BTN_0,
	38	SND_JACK_BTN_1,
	39	SND_JACK_BTN_2,
	40	SND_JACK_BTN_3,
	41	};
	42
	43	#define TS3A227E_NUM_BUTTONS 4
	44	#define TS3A227E_JACK_MASK (SND_JACK_HEADPHONE \| \
	45	SND_JACK_MICROPHONE \| \
	46	SND_JACK_BTN_0 \| \
	47	SND_JACK_BTN_1 \| \
	48	SND_JACK_BTN_2 \| \
	49	SND_JACK_BTN_3)
	50
	51	/* TS3A227E registers */
	52	#define TS3A227E_REG_DEVICE_ID 0x00
	53	#define TS3A227E_REG_INTERRUPT 0x01
	54	#define TS3A227E_REG_KP_INTERRUPT 0x02
	55	#define TS3A227E_REG_INTERRUPT_DISABLE 0x03
	56	#define TS3A227E_REG_SETTING_1 0x04
	57	#define TS3A227E_REG_SETTING_2 0x05
	58	#define TS3A227E_REG_SETTING_3 0x06
	59	#define TS3A227E_REG_SWITCH_CONTROL_1 0x07
	60	#define TS3A227E_REG_SWITCH_CONTROL_2 0x08
	61	#define TS3A227E_REG_SWITCH_STATUS_1 0x09
	62	#define TS3A227E_REG_SWITCH_STATUS_2 0x0a
	63	#define TS3A227E_REG_ACCESSORY_STATUS 0x0b
	64	#define TS3A227E_REG_ADC_OUTPUT 0x0c
	65	#define TS3A227E_REG_KP_THRESHOLD_1 0x0d
	66	#define TS3A227E_REG_KP_THRESHOLD_2 0x0e
	67	#define TS3A227E_REG_KP_THRESHOLD_3 0x0f
	68
	69	/* TS3A227E_REG_INTERRUPT 0x01 */
	70	#define INS_REM_EVENT 0x01
	71	#define DETECTION_COMPLETE_EVENT 0x02
	72
	73	/* TS3A227E_REG_KP_INTERRUPT 0x02 */
	74	#define PRESS_MASK(idx) (0x01 << (2 * (idx)))
	75	#define RELEASE_MASK(idx) (0x02 << (2 * (idx)))
	76
	77	/* TS3A227E_REG_INTERRUPT_DISABLE 0x03 */
	78	#define INS_REM_INT_DISABLE 0x01
	79	#define DETECTION_COMPLETE_INT_DISABLE 0x02
	80	#define ADC_COMPLETE_INT_DISABLE 0x04
	81	#define INTB_DISABLE 0x08
	82
	83	/* TS3A227E_REG_SETTING_2 0x05 */
	84	#define KP_ENABLE 0x04
	85
39552d7a AP	86	/* TS3A227E_REG_SETTING_3 0x06 */
	87	#define MICBIAS_SETTING_SFT (3)
	88	#define MICBIAS_SETTING_MASK (0x7 << MICBIAS_SETTING_SFT)
	89
2880fc87 DR	90	/* TS3A227E_REG_ACCESSORY_STATUS 0x0b */
	91	#define TYPE_3_POLE 0x01
	92	#define TYPE_4_POLE_OMTP 0x02
	93	#define TYPE_4_POLE_STANDARD 0x04
	94	#define JACK_INSERTED 0x08
	95	#define EITHER_MIC_MASK (TYPE_4_POLE_OMTP \| TYPE_4_POLE_STANDARD)
	96
	97	static const struct reg_default ts3a227e_reg_defaults[] = {
	98	{ TS3A227E_REG_DEVICE_ID, 0x10 },
	99	{ TS3A227E_REG_INTERRUPT, 0x00 },
	100	{ TS3A227E_REG_KP_INTERRUPT, 0x00 },
	101	{ TS3A227E_REG_INTERRUPT_DISABLE, 0x08 },
	102	{ TS3A227E_REG_SETTING_1, 0x23 },
	103	{ TS3A227E_REG_SETTING_2, 0x00 },
	104	{ TS3A227E_REG_SETTING_3, 0x0e },
	105	{ TS3A227E_REG_SWITCH_CONTROL_1, 0x00 },
	106	{ TS3A227E_REG_SWITCH_CONTROL_2, 0x00 },
	107	{ TS3A227E_REG_SWITCH_STATUS_1, 0x0c },
	108	{ TS3A227E_REG_SWITCH_STATUS_2, 0x00 },
	109	{ TS3A227E_REG_ACCESSORY_STATUS, 0x00 },
	110	{ TS3A227E_REG_ADC_OUTPUT, 0x00 },
	111	{ TS3A227E_REG_KP_THRESHOLD_1, 0x20 },
	112	{ TS3A227E_REG_KP_THRESHOLD_2, 0x40 },
	113	{ TS3A227E_REG_KP_THRESHOLD_3, 0x68 },
	114	};
	115
	116	static bool ts3a227e_readable_reg(struct device *dev, unsigned int reg)
	117	{
	118	switch (reg) {
	119	case TS3A227E_REG_DEVICE_ID ... TS3A227E_REG_KP_THRESHOLD_3:
	120	return true;
	121	default:
	122	return false;
	123	}
	124	}
	125
	126	static bool ts3a227e_writeable_reg(struct device *dev, unsigned int reg)
	127	{
	128	switch (reg) {
	129	case TS3A227E_REG_INTERRUPT_DISABLE ... TS3A227E_REG_SWITCH_CONTROL_2:
	130	case TS3A227E_REG_KP_THRESHOLD_1 ... TS3A227E_REG_KP_THRESHOLD_3:
	131	return true;
	132	default:
	133	return false;
	134	}
	135	}
	136
	137	static bool ts3a227e_volatile_reg(struct device *dev, unsigned int reg)
	138	{
	139	switch (reg) {
	140	case TS3A227E_REG_INTERRUPT ... TS3A227E_REG_INTERRUPT_DISABLE:
	141	case TS3A227E_REG_SETTING_2:
	142	case TS3A227E_REG_SWITCH_STATUS_1 ... TS3A227E_REG_ADC_OUTPUT:
	143	return true;
	144	default:
	145	return false;
	146	}
	147	}
	148
	149	static void ts3a227e_jack_report(struct ts3a227e *ts3a227e)
	150	{
	151	unsigned int i;
	152	int report = 0;
	153
154	if (!ts3a227e->jack)
155	return;
156
157	if (ts3a227e->plugged)
158	report = SND_JACK_HEADPHONE;
159	if (ts3a227e->mic_present)
160	report \|= SND_JACK_MICROPHONE;
161	for (i = 0; i < TS3A227E_NUM_BUTTONS; i++) {
162	if (ts3a227e->buttons_held & (1 << i))
163	report \|= ts3a227e_buttons[i];
164	}
165	snd_soc_jack_report(ts3a227e->jack, report, TS3A227E_JACK_MASK);
166	}
167
168	static void ts3a227e_new_jack_state(struct ts3a227e *ts3a227e, unsigned acc_reg)
169	{
170	bool plugged, mic_present;
171
172	plugged = !!(acc_reg & JACK_INSERTED);
173	mic_present = plugged && !!(acc_reg & EITHER_MIC_MASK);
174
175	ts3a227e->plugged = plugged;
176
177	if (mic_present != ts3a227e->mic_present) {
178	ts3a227e->mic_present = mic_present;
179	ts3a227e->buttons_held = 0;
180	if (mic_present) {
181	/* Enable key press detection. */
182	regmap_update_bits(ts3a227e->regmap,
183	TS3A227E_REG_SETTING_2,
184	KP_ENABLE, KP_ENABLE);
185	}
186	}
187	}
188
189	static irqreturn_t ts3a227e_interrupt(int irq, void *data)
190	{
191	struct ts3a227e ts3a227e = (struct ts3a227e )data;
192	struct regmap *regmap = ts3a227e->regmap;
193	unsigned int int_reg, kp_int_reg, acc_reg, i;
c4a99a4b FY	194	struct device *dev = ts3a227e->dev;
c4a99a4b FY	195	int ret;
2880fc87 DR	196
2880fc87 DR	197	/* Check for plug/unplug. */
c4a99a4b FY	198	ret = regmap_read(regmap, TS3A227E_REG_INTERRUPT, &int_reg);
	199	if (ret) {
	200	dev_err(dev, "failed to clear interrupt ret=%d\n", ret);
	201	return IRQ_NONE;
	202	}
	203
2880fc87 DR	204	if (int_reg & (DETECTION_COMPLETE_EVENT \| INS_REM_EVENT)) {
	205	regmap_read(regmap, TS3A227E_REG_ACCESSORY_STATUS, &acc_reg);
	206	ts3a227e_new_jack_state(ts3a227e, acc_reg);
	207	}
	208
	209	/* Report any key events. */
c4a99a4b FY	210	ret = regmap_read(regmap, TS3A227E_REG_KP_INTERRUPT, &kp_int_reg);
	211	if (ret) {
	212	dev_err(dev, "failed to clear key interrupt ret=%d\n", ret);
	213	return IRQ_NONE;
	214	}
	215
2880fc87 DR	216	for (i = 0; i < TS3A227E_NUM_BUTTONS; i++) {
	217	if (kp_int_reg & PRESS_MASK(i))
	218	ts3a227e->buttons_held \|= (1 << i);
	219	if (kp_int_reg & RELEASE_MASK(i))
	220	ts3a227e->buttons_held &= ~(1 << i);
	221	}
	222
	223	ts3a227e_jack_report(ts3a227e);
	224
	225	return IRQ_HANDLED;
	226	}
	227
	228	/**
	229	* ts3a227e_enable_jack_detect - Specify a jack for event reporting
	230	*
	231	* @component: component to register the jack with
	232	* @jack: jack to use to report headset and button events on
	233	*
	234	* After this function has been called the headset insert/remove and button
	235	* events 0-3 will be routed to the given jack. Jack can be null to stop
	236	* reporting.
	237	*/
	238	int ts3a227e_enable_jack_detect(struct snd_soc_component *component,
	239	struct snd_soc_jack *jack)
	240	{
	241	struct ts3a227e *ts3a227e = snd_soc_component_get_drvdata(component);
	242
	243	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_MEDIA);
ddf9ea21 AP	244	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
	245	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
	246	snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
2880fc87 DR	247
	248	ts3a227e->jack = jack;
	249	ts3a227e_jack_report(ts3a227e);
	250
	251	return 0;
	252	}
	253	EXPORT_SYMBOL_GPL(ts3a227e_enable_jack_detect);
	254
	255	static struct snd_soc_component_driver ts3a227e_soc_driver;
	256
	257	static const struct regmap_config ts3a227e_regmap_config = {
	258	.val_bits = 8,
	259	.reg_bits = 8,
	260
	261	.max_register = TS3A227E_REG_KP_THRESHOLD_3,
	262	.readable_reg = ts3a227e_readable_reg,
	263	.writeable_reg = ts3a227e_writeable_reg,
	264	.volatile_reg = ts3a227e_volatile_reg,
	265
	266	.cache_type = REGCACHE_RBTREE,
	267	.reg_defaults = ts3a227e_reg_defaults,
	268	.num_reg_defaults = ARRAY_SIZE(ts3a227e_reg_defaults),
	269	};
	270
a650bb34 FY	271	static int ts3a227e_parse_device_property(struct ts3a227e *ts3a227e,
a650bb34 FY	272	struct device *dev)
39552d7a AP	273	{
	274	u32 micbias;
	275	int err;
	276
a650bb34	277	err = device_property_read_u32(dev, "ti,micbias", &micbias);
39552d7a AP	278	if (!err) {
	279	regmap_update_bits(ts3a227e->regmap, TS3A227E_REG_SETTING_3,
	280	MICBIAS_SETTING_MASK,
	281	(micbias & 0x07) << MICBIAS_SETTING_SFT);
	282	}
	283
	284	return 0;
	285	}
	286
2880fc87 DR	287	static int ts3a227e_i2c_probe(struct i2c_client *i2c,
	288	const struct i2c_device_id *id)
	289	{
	290	struct ts3a227e *ts3a227e;
	291	struct device *dev = &i2c->dev;
	292	int ret;
8e3e36e8	293	unsigned int acc_reg;
2880fc87 DR	294
	295	ts3a227e = devm_kzalloc(&i2c->dev, sizeof(*ts3a227e), GFP_KERNEL);
	296	if (ts3a227e == NULL)
	297	return -ENOMEM;
	298
	299	i2c_set_clientdata(i2c, ts3a227e);
c4a99a4b FY	300	ts3a227e->dev = dev;
c4a99a4b FY	301	ts3a227e->irq = i2c->irq;
2880fc87 DR	302
	303	ts3a227e->regmap = devm_regmap_init_i2c(i2c, &ts3a227e_regmap_config);
	304	if (IS_ERR(ts3a227e->regmap))
	305	return PTR_ERR(ts3a227e->regmap);
	306
a650bb34 FY	307	ret = ts3a227e_parse_device_property(ts3a227e, dev);
	308	if (ret) {
	309	dev_err(dev, "Failed to parse device property: %d\n", ret);
	310	return ret;
39552d7a AP	311	}
39552d7a AP	312
2880fc87 DR	313	ret = devm_request_threaded_irq(dev, i2c->irq, NULL, ts3a227e_interrupt,
	314	IRQF_TRIGGER_LOW \| IRQF_ONESHOT,
	315	"TS3A227E", ts3a227e);
	316	if (ret) {
	317	dev_err(dev, "Cannot request irq %d (%d)\n", i2c->irq, ret);
	318	return ret;
	319	}
	320
	321	ret = devm_snd_soc_register_component(&i2c->dev, &ts3a227e_soc_driver,
	322	NULL, 0);
	323	if (ret)
	324	return ret;
	325
	326	/* Enable interrupts except for ADC complete. */
	327	regmap_update_bits(ts3a227e->regmap, TS3A227E_REG_INTERRUPT_DISABLE,
	328	INTB_DISABLE \| ADC_COMPLETE_INT_DISABLE,
	329	ADC_COMPLETE_INT_DISABLE);
	330
8e3e36e8 CYC	331	/* Read jack status because chip might not trigger interrupt at boot. */
	332	regmap_read(ts3a227e->regmap, TS3A227E_REG_ACCESSORY_STATUS, &acc_reg);
	333	ts3a227e_new_jack_state(ts3a227e, acc_reg);
	334	ts3a227e_jack_report(ts3a227e);
	335
2880fc87 DR	336	return 0;
	337	}
	338
c4a99a4b FY	339	#ifdef CONFIG_PM_SLEEP
	340	static int ts3a227e_suspend(struct device *dev)
	341	{
	342	struct ts3a227e *ts3a227e = dev_get_drvdata(dev);
	343
	344	dev_dbg(ts3a227e->dev, "suspend disable irq\n");
	345	disable_irq(ts3a227e->irq);
	346
	347	return 0;
	348	}
	349
	350	static int ts3a227e_resume(struct device *dev)
	351	{
	352	struct ts3a227e *ts3a227e = dev_get_drvdata(dev);
	353
	354	dev_dbg(ts3a227e->dev, "resume enable irq\n");
	355	enable_irq(ts3a227e->irq);
	356
	357	return 0;
	358	}
	359	#endif
	360
	361	static const struct dev_pm_ops ts3a227e_pm = {
	362	SET_SYSTEM_SLEEP_PM_OPS(ts3a227e_suspend, ts3a227e_resume)
	363	};
	364
2880fc87 DR	365	static const struct i2c_device_id ts3a227e_i2c_ids[] = {
	366	{ "ts3a227e", 0 },
	367	{ }
	368	};
	369	MODULE_DEVICE_TABLE(i2c, ts3a227e_i2c_ids);
	370
	371	static const struct of_device_id ts3a227e_of_match[] = {
	372	{ .compatible = "ti,ts3a227e", },
	373	{ }
	374	};
	375	MODULE_DEVICE_TABLE(of, ts3a227e_of_match);
	376
	377	static struct i2c_driver ts3a227e_driver = {
	378	.driver = {
	379	.name = "ts3a227e",
c4a99a4b	380	.pm = &ts3a227e_pm,
2880fc87 DR	381	.of_match_table = of_match_ptr(ts3a227e_of_match),
	382	},
	383	.probe = ts3a227e_i2c_probe,
	384	.id_table = ts3a227e_i2c_ids,
	385	};
	386	module_i2c_driver(ts3a227e_driver);
	387
	388	MODULE_DESCRIPTION("ASoC ts3a227e driver");
	389	MODULE_AUTHOR("Dylan Reid <dgreid@chromium.org>");
	390	MODULE_LICENSE("GPL v2");