[deliverable/linux.git] / drivers / input / misc / max77693-haptic.c

/*
 * MAXIM MAX77693/MAX77843 Haptic device driver
 *
 * Copyright (C) 2014,2015 Samsung Electronics
 * Jaewon Kim <jaewon02.kim@samsung.com>
 * Krzysztof Kozlowski <k.kozlowski@samsung.com>
 *
 * This program is not provided / owned by Maxim Integrated Products.
 *
 * 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.
 */

#include <linux/err.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pwm.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/regulator/consumer.h>
#include <linux/mfd/max77693.h>
#include <linux/mfd/max77693-common.h>
#include <linux/mfd/max77693-private.h>
#include <linux/mfd/max77843-private.h>

#define MAX_MAGNITUDE_SHIFT	16

enum max77693_haptic_motor_type {
	MAX77693_HAPTIC_ERM = 0,
	MAX77693_HAPTIC_LRA,
};

enum max77693_haptic_pulse_mode {
	MAX77693_HAPTIC_EXTERNAL_MODE = 0,
	MAX77693_HAPTIC_INTERNAL_MODE,
};

enum max77693_haptic_pwm_divisor {
	MAX77693_HAPTIC_PWM_DIVISOR_32 = 0,
	MAX77693_HAPTIC_PWM_DIVISOR_64,
	MAX77693_HAPTIC_PWM_DIVISOR_128,
	MAX77693_HAPTIC_PWM_DIVISOR_256,
};

struct max77693_haptic {
	enum max77693_types dev_type;

	struct regmap *regmap_pmic;
	struct regmap *regmap_haptic;
	struct device *dev;
	struct input_dev *input_dev;
	struct pwm_device *pwm_dev;
	struct regulator *motor_reg;

	bool enabled;
	bool suspend_state;
	unsigned int magnitude;
	unsigned int pwm_duty;
	enum max77693_haptic_motor_type type;
	enum max77693_haptic_pulse_mode mode;

	struct work_struct work;
};

static int max77693_haptic_set_duty_cycle(struct max77693_haptic *haptic)
{
	int delta = (haptic->pwm_dev->period + haptic->pwm_duty) / 2;
	int error;

	error = pwm_config(haptic->pwm_dev, delta, haptic->pwm_dev->period);
	if (error) {
		dev_err(haptic->dev, "failed to configure pwm: %d\n", error);
		return error;
	}

	return 0;
}

static int max77843_haptic_bias(struct max77693_haptic *haptic, bool on)
{
	int error;

	if (haptic->dev_type != TYPE_MAX77843)
		return 0;

	error = regmap_update_bits(haptic->regmap_haptic,
				   MAX77843_SYS_REG_MAINCTRL1,
				   MAX77843_MAINCTRL1_BIASEN_MASK,
				   on << MAINCTRL1_BIASEN_SHIFT);
	if (error) {
		dev_err(haptic->dev, "failed to %s bias: %d\n",
			on ? "enable" : "disable", error);
		return error;
	}

	return 0;
}

static int max77693_haptic_configure(struct max77693_haptic *haptic,
				     bool enable)
{
	unsigned int value, config_reg;
	int error;

	switch (haptic->dev_type) {
	case TYPE_MAX77693:
		value = ((haptic->type << MAX77693_CONFIG2_MODE) |
			(enable << MAX77693_CONFIG2_MEN) |
			(haptic->mode << MAX77693_CONFIG2_HTYP) |
			MAX77693_HAPTIC_PWM_DIVISOR_128);
		config_reg = MAX77693_HAPTIC_REG_CONFIG2;
		break;
	case TYPE_MAX77843:
		value = (haptic->type << MCONFIG_MODE_SHIFT) |
			(enable << MCONFIG_MEN_SHIFT) |
			MAX77693_HAPTIC_PWM_DIVISOR_128;
		config_reg = MAX77843_HAP_REG_MCONFIG;
		break;
	default:
		return -EINVAL;
	}

	error = regmap_write(haptic->regmap_haptic,
			     config_reg, value);
	if (error) {
		dev_err(haptic->dev,
			"failed to update haptic config: %d\n", error);
		return error;
	}

	return 0;
}

static int max77693_haptic_lowsys(struct max77693_haptic *haptic, bool enable)
{
	int error;

	if (haptic->dev_type != TYPE_MAX77693)
		return 0;

	error = regmap_update_bits(haptic->regmap_pmic,
				   MAX77693_PMIC_REG_LSCNFG,
				   MAX77693_PMIC_LOW_SYS_MASK,
				   enable << MAX77693_PMIC_LOW_SYS_SHIFT);
	if (error) {
		dev_err(haptic->dev, "cannot update pmic regmap: %d\n", error);
		return error;
	}

	return 0;
}

static void max77693_haptic_enable(struct max77693_haptic *haptic)
{
	int error;

	if (haptic->enabled)
		return;

	error = pwm_enable(haptic->pwm_dev);
	if (error) {
		dev_err(haptic->dev,
			"failed to enable haptic pwm device: %d\n", error);
		return;
	}

	error = max77693_haptic_lowsys(haptic, true);
	if (error)
		goto err_enable_lowsys;

	error = max77693_haptic_configure(haptic, true);
	if (error)
		goto err_enable_config;

	haptic->enabled = true;

	return;

err_enable_config:
	max77693_haptic_lowsys(haptic, false);
err_enable_lowsys:
	pwm_disable(haptic->pwm_dev);
}

static void max77693_haptic_disable(struct max77693_haptic *haptic)
{
	int error;

	if (!haptic->enabled)
		return;

	error = max77693_haptic_configure(haptic, false);
	if (error)
		return;

	error = max77693_haptic_lowsys(haptic, false);
	if (error)
		goto err_disable_lowsys;

	pwm_disable(haptic->pwm_dev);
	haptic->enabled = false;

	return;

err_disable_lowsys:
	max77693_haptic_configure(haptic, true);
}

static void max77693_haptic_play_work(struct work_struct *work)
{
	struct max77693_haptic *haptic =
			container_of(work, struct max77693_haptic, work);
	int error;

	error = max77693_haptic_set_duty_cycle(haptic);
	if (error) {
		dev_err(haptic->dev, "failed to set duty cycle: %d\n", error);
		return;
	}

	if (haptic->magnitude)
		max77693_haptic_enable(haptic);
	else
		max77693_haptic_disable(haptic);
}

static int max77693_haptic_play_effect(struct input_dev *dev, void *data,
				       struct ff_effect *effect)
{
	struct max77693_haptic *haptic = input_get_drvdata(dev);
	u64 period_mag_multi;

	haptic->magnitude = effect->u.rumble.strong_magnitude;
	if (!haptic->magnitude)
		haptic->magnitude = effect->u.rumble.weak_magnitude;

	/*
	 * The magnitude comes from force-feedback interface.
	 * The formula to convert magnitude to pwm_duty as follows:
	 * - pwm_duty = (magnitude * pwm_period) / MAX_MAGNITUDE(0xFFFF)
	 */
	period_mag_multi = (u64)haptic->pwm_dev->period * haptic->magnitude;
	haptic->pwm_duty = (unsigned int)(period_mag_multi >>
						MAX_MAGNITUDE_SHIFT);

	schedule_work(&haptic->work);

	return 0;
}

static int max77693_haptic_open(struct input_dev *dev)
{
	struct max77693_haptic *haptic = input_get_drvdata(dev);
	int error;

	error = max77843_haptic_bias(haptic, true);
	if (error)
		return error;

	error = regulator_enable(haptic->motor_reg);
	if (error) {
		dev_err(haptic->dev,
			"failed to enable regulator: %d\n", error);
		return error;
	}

	return 0;
}

static void max77693_haptic_close(struct input_dev *dev)
{
	struct max77693_haptic *haptic = input_get_drvdata(dev);
	int error;

	cancel_work_sync(&haptic->work);
	max77693_haptic_disable(haptic);

	error = regulator_disable(haptic->motor_reg);
	if (error)
		dev_err(haptic->dev,
			"failed to disable regulator: %d\n", error);

	max77843_haptic_bias(haptic, false);
}

static int max77693_haptic_probe(struct platform_device *pdev)
{
	struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent);
	struct max77693_haptic *haptic;
	int error;

	haptic = devm_kzalloc(&pdev->dev, sizeof(*haptic), GFP_KERNEL);
	if (!haptic)
		return -ENOMEM;

	haptic->regmap_pmic = max77693->regmap;
	haptic->dev = &pdev->dev;
	haptic->type = MAX77693_HAPTIC_LRA;
	haptic->mode = MAX77693_HAPTIC_EXTERNAL_MODE;
	haptic->suspend_state = false;

	/* Variant-specific init */
	haptic->dev_type = platform_get_device_id(pdev)->driver_data;
	switch (haptic->dev_type) {
	case TYPE_MAX77693:
		haptic->regmap_haptic = max77693->regmap_haptic;
		break;
	case TYPE_MAX77843:
		haptic->regmap_haptic = max77693->regmap;
		break;
	default:
		dev_err(&pdev->dev, "unsupported device type: %u\n",
			haptic->dev_type);
		return -EINVAL;
	}

	INIT_WORK(&haptic->work, max77693_haptic_play_work);

	/* Get pwm and regulatot for haptic device */
	haptic->pwm_dev = devm_pwm_get(&pdev->dev, NULL);
	if (IS_ERR(haptic->pwm_dev)) {
		dev_err(&pdev->dev, "failed to get pwm device\n");
		return PTR_ERR(haptic->pwm_dev);
	}

	haptic->motor_reg = devm_regulator_get(&pdev->dev, "haptic");
	if (IS_ERR(haptic->motor_reg)) {
		dev_err(&pdev->dev, "failed to get regulator\n");
		return PTR_ERR(haptic->motor_reg);
	}

	/* Initialize input device for haptic device */
	haptic->input_dev = devm_input_allocate_device(&pdev->dev);
	if (!haptic->input_dev) {
		dev_err(&pdev->dev, "failed to allocate input device\n");
		return -ENOMEM;
	}

	haptic->input_dev->name = "max77693-haptic";
	haptic->input_dev->id.version = 1;
	haptic->input_dev->dev.parent = &pdev->dev;
	haptic->input_dev->open = max77693_haptic_open;
	haptic->input_dev->close = max77693_haptic_close;
	input_set_drvdata(haptic->input_dev, haptic);
	input_set_capability(haptic->input_dev, EV_FF, FF_RUMBLE);

	error = input_ff_create_memless(haptic->input_dev, NULL,
				max77693_haptic_play_effect);
	if (error) {
		dev_err(&pdev->dev, "failed to create force-feedback\n");
		return error;
	}

	error = input_register_device(haptic->input_dev);
	if (error) {
		dev_err(&pdev->dev, "failed to register input device\n");
		return error;
	}

	platform_set_drvdata(pdev, haptic);

	return 0;
}

static int __maybe_unused max77693_haptic_suspend(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct max77693_haptic *haptic = platform_get_drvdata(pdev);

	if (haptic->enabled) {
		max77693_haptic_disable(haptic);
		haptic->suspend_state = true;
	}

	return 0;
}

static int __maybe_unused max77693_haptic_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct max77693_haptic *haptic = platform_get_drvdata(pdev);

	if (haptic->suspend_state) {
		max77693_haptic_enable(haptic);
		haptic->suspend_state = false;
	}

	return 0;
}

static SIMPLE_DEV_PM_OPS(max77693_haptic_pm_ops,
			 max77693_haptic_suspend, max77693_haptic_resume);

static const struct platform_device_id max77693_haptic_id[] = {
	{ "max77693-haptic", TYPE_MAX77693 },
	{ "max77843-haptic", TYPE_MAX77843 },
	{},
};
MODULE_DEVICE_TABLE(platform, max77693_haptic_id);

static struct platform_driver max77693_haptic_driver = {
	.driver		= {
		.name	= "max77693-haptic",
		.pm	= &max77693_haptic_pm_ops,
	},
	.probe		= max77693_haptic_probe,
	.id_table	= max77693_haptic_id,
};
module_platform_driver(max77693_haptic_driver);

MODULE_AUTHOR("Jaewon Kim <jaewon02.kim@samsung.com>");
MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski@samsung.com>");
MODULE_DESCRIPTION("MAXIM 77693/77843 Haptic driver");
MODULE_ALIAS("platform:max77693-haptic");
MODULE_LICENSE("GPL");
Commit	Line	Data
a3b3ca75	1	/*
56bbc99e	2	* MAXIM MAX77693/MAX77843 Haptic device driver
a3b3ca75	3	*
56bbc99e	4	* Copyright (C) 2014,2015 Samsung Electronics
a3b3ca75	5	* Jaewon Kim <jaewon02.kim@samsung.com>
56bbc99e	6	* Krzysztof Kozlowski <k.kozlowski@samsung.com>
a3b3ca75 JK	7	*
	8	* This program is not provided / owned by Maxim Integrated Products.
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2 of the License, or
	13	* (at your option) any later version.
	14	*/
	15
	16	#include <linux/err.h>
	17	#include <linux/init.h>
	18	#include <linux/i2c.h>
	19	#include <linux/regmap.h>
	20	#include <linux/input.h>
	21	#include <linux/module.h>
	22	#include <linux/platform_device.h>
	23	#include <linux/pwm.h>
	24	#include <linux/slab.h>
	25	#include <linux/workqueue.h>
	26	#include <linux/regulator/consumer.h>
	27	#include <linux/mfd/max77693.h>
61b305cd	28	#include <linux/mfd/max77693-common.h>
a3b3ca75	29	#include <linux/mfd/max77693-private.h>
56bbc99e	30	#include <linux/mfd/max77843-private.h>
a3b3ca75 JK	31
	32	#define MAX_MAGNITUDE_SHIFT 16
	33
	34	enum max77693_haptic_motor_type {
	35	MAX77693_HAPTIC_ERM = 0,
	36	MAX77693_HAPTIC_LRA,
	37	};
	38
	39	enum max77693_haptic_pulse_mode {
	40	MAX77693_HAPTIC_EXTERNAL_MODE = 0,
	41	MAX77693_HAPTIC_INTERNAL_MODE,
	42	};
	43
	44	enum max77693_haptic_pwm_divisor {
	45	MAX77693_HAPTIC_PWM_DIVISOR_32 = 0,
	46	MAX77693_HAPTIC_PWM_DIVISOR_64,
	47	MAX77693_HAPTIC_PWM_DIVISOR_128,
	48	MAX77693_HAPTIC_PWM_DIVISOR_256,
	49	};
	50
	51	struct max77693_haptic {
6eaa247a KK	52	enum max77693_types dev_type;
6eaa247a KK	53
a3b3ca75 JK	54	struct regmap *regmap_pmic;
	55	struct regmap *regmap_haptic;
	56	struct device *dev;
	57	struct input_dev *input_dev;
	58	struct pwm_device *pwm_dev;
	59	struct regulator *motor_reg;
	60
	61	bool enabled;
	62	bool suspend_state;
	63	unsigned int magnitude;
	64	unsigned int pwm_duty;
	65	enum max77693_haptic_motor_type type;
	66	enum max77693_haptic_pulse_mode mode;
a3b3ca75 JK	67
	68	struct work_struct work;
	69	};
	70
	71	static int max77693_haptic_set_duty_cycle(struct max77693_haptic *haptic)
	72	{
	73	int delta = (haptic->pwm_dev->period + haptic->pwm_duty) / 2;
	74	int error;
	75
	76	error = pwm_config(haptic->pwm_dev, delta, haptic->pwm_dev->period);
	77	if (error) {
	78	dev_err(haptic->dev, "failed to configure pwm: %d\n", error);
	79	return error;
	80	}
	81
	82	return 0;
	83	}
	84
56bbc99e KK	85	static int max77843_haptic_bias(struct max77693_haptic *haptic, bool on)
	86	{
	87	int error;
	88
	89	if (haptic->dev_type != TYPE_MAX77843)
	90	return 0;
	91
	92	error = regmap_update_bits(haptic->regmap_haptic,
	93	MAX77843_SYS_REG_MAINCTRL1,
	94	MAX77843_MAINCTRL1_BIASEN_MASK,
	95	on << MAINCTRL1_BIASEN_SHIFT);
	96	if (error) {
	97	dev_err(haptic->dev, "failed to %s bias: %d\n",
	98	on ? "enable" : "disable", error);
	99	return error;
	100	}
	101
	102	return 0;
	103	}
	104
a3b3ca75 JK	105	static int max77693_haptic_configure(struct max77693_haptic *haptic,
	106	bool enable)
	107	{
6eaa247a	108	unsigned int value, config_reg;
a3b3ca75 JK	109	int error;
a3b3ca75 JK	110
6eaa247a KK	111	switch (haptic->dev_type) {
	112	case TYPE_MAX77693:
	113	value = ((haptic->type << MAX77693_CONFIG2_MODE) \|
	114	(enable << MAX77693_CONFIG2_MEN) \|
	115	(haptic->mode << MAX77693_CONFIG2_HTYP) \|
	116	MAX77693_HAPTIC_PWM_DIVISOR_128);
	117	config_reg = MAX77693_HAPTIC_REG_CONFIG2;
	118	break;
56bbc99e KK	119	case TYPE_MAX77843:
	120	value = (haptic->type << MCONFIG_MODE_SHIFT) \|
	121	(enable << MCONFIG_MEN_SHIFT) \|
	122	MAX77693_HAPTIC_PWM_DIVISOR_128;
	123	config_reg = MAX77843_HAP_REG_MCONFIG;
	124	break;
6eaa247a KK	125	default:
	126	return -EINVAL;
	127	}
a3b3ca75 JK	128
a3b3ca75 JK	129	error = regmap_write(haptic->regmap_haptic,
6eaa247a	130	config_reg, value);
a3b3ca75 JK	131	if (error) {
	132	dev_err(haptic->dev,
	133	"failed to update haptic config: %d\n", error);
	134	return error;
	135	}
	136
	137	return 0;
	138	}
	139
	140	static int max77693_haptic_lowsys(struct max77693_haptic *haptic, bool enable)
	141	{
	142	int error;
	143
56bbc99e KK	144	if (haptic->dev_type != TYPE_MAX77693)
	145	return 0;
	146
a3b3ca75 JK	147	error = regmap_update_bits(haptic->regmap_pmic,
	148	MAX77693_PMIC_REG_LSCNFG,
	149	MAX77693_PMIC_LOW_SYS_MASK,
	150	enable << MAX77693_PMIC_LOW_SYS_SHIFT);
	151	if (error) {
	152	dev_err(haptic->dev, "cannot update pmic regmap: %d\n", error);
	153	return error;
	154	}
	155
	156	return 0;
	157	}
	158
	159	static void max77693_haptic_enable(struct max77693_haptic *haptic)
	160	{
	161	int error;
	162
	163	if (haptic->enabled)
	164	return;
	165
	166	error = pwm_enable(haptic->pwm_dev);
	167	if (error) {
	168	dev_err(haptic->dev,
	169	"failed to enable haptic pwm device: %d\n", error);
	170	return;
	171	}
	172
	173	error = max77693_haptic_lowsys(haptic, true);
	174	if (error)
	175	goto err_enable_lowsys;
	176
	177	error = max77693_haptic_configure(haptic, true);
	178	if (error)
	179	goto err_enable_config;
	180
	181	haptic->enabled = true;
	182
	183	return;
	184
	185	err_enable_config:
	186	max77693_haptic_lowsys(haptic, false);
	187	err_enable_lowsys:
	188	pwm_disable(haptic->pwm_dev);
	189	}
	190
	191	static void max77693_haptic_disable(struct max77693_haptic *haptic)
	192	{
	193	int error;
	194
135d916f	195	if (!haptic->enabled)
a3b3ca75 JK	196	return;
	197
	198	error = max77693_haptic_configure(haptic, false);
	199	if (error)
	200	return;
	201
	202	error = max77693_haptic_lowsys(haptic, false);
	203	if (error)
	204	goto err_disable_lowsys;
	205
	206	pwm_disable(haptic->pwm_dev);
	207	haptic->enabled = false;
	208
	209	return;
	210
	211	err_disable_lowsys:
	212	max77693_haptic_configure(haptic, true);
	213	}
	214
	215	static void max77693_haptic_play_work(struct work_struct *work)
	216	{
	217	struct max77693_haptic *haptic =
	218	container_of(work, struct max77693_haptic, work);
	219	int error;
	220
	221	error = max77693_haptic_set_duty_cycle(haptic);
	222	if (error) {
	223	dev_err(haptic->dev, "failed to set duty cycle: %d\n", error);
	224	return;
	225	}
	226
	227	if (haptic->magnitude)
	228	max77693_haptic_enable(haptic);
	229	else
	230	max77693_haptic_disable(haptic);
	231	}
	232
	233	static int max77693_haptic_play_effect(struct input_dev dev, void data,
	234	struct ff_effect *effect)
	235	{
	236	struct max77693_haptic *haptic = input_get_drvdata(dev);
fbefc5e7	237	u64 period_mag_multi;
a3b3ca75 JK	238
	239	haptic->magnitude = effect->u.rumble.strong_magnitude;
	240	if (!haptic->magnitude)
	241	haptic->magnitude = effect->u.rumble.weak_magnitude;
	242
	243	/*
	244	* The magnitude comes from force-feedback interface.
	245	* The formula to convert magnitude to pwm_duty as follows:
	246	* - pwm_duty = (magnitude * pwm_period) / MAX_MAGNITUDE(0xFFFF)
	247	*/
fbefc5e7	248	period_mag_multi = (u64)haptic->pwm_dev->period * haptic->magnitude;
a3b3ca75 JK	249	haptic->pwm_duty = (unsigned int)(period_mag_multi >>
	250	MAX_MAGNITUDE_SHIFT);
	251
	252	schedule_work(&haptic->work);
	253
	254	return 0;
	255	}
	256
	257	static int max77693_haptic_open(struct input_dev *dev)
	258	{
	259	struct max77693_haptic *haptic = input_get_drvdata(dev);
	260	int error;
	261
56bbc99e KK	262	error = max77843_haptic_bias(haptic, true);
	263	if (error)
	264	return error;
	265
a3b3ca75 JK	266	error = regulator_enable(haptic->motor_reg);
	267	if (error) {
	268	dev_err(haptic->dev,
	269	"failed to enable regulator: %d\n", error);
	270	return error;
	271	}
	272
	273	return 0;
	274	}
	275
	276	static void max77693_haptic_close(struct input_dev *dev)
	277	{
	278	struct max77693_haptic *haptic = input_get_drvdata(dev);
	279	int error;
	280
	281	cancel_work_sync(&haptic->work);
	282	max77693_haptic_disable(haptic);
	283
	284	error = regulator_disable(haptic->motor_reg);
	285	if (error)
	286	dev_err(haptic->dev,
	287	"failed to disable regulator: %d\n", error);
56bbc99e KK	288
56bbc99e KK	289	max77843_haptic_bias(haptic, false);
a3b3ca75 JK	290	}
	291
	292	static int max77693_haptic_probe(struct platform_device *pdev)
	293	{
	294	struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent);
	295	struct max77693_haptic *haptic;
	296	int error;
	297
	298	haptic = devm_kzalloc(&pdev->dev, sizeof(*haptic), GFP_KERNEL);
	299	if (!haptic)
	300	return -ENOMEM;
	301
	302	haptic->regmap_pmic = max77693->regmap;
a3b3ca75 JK	303	haptic->dev = &pdev->dev;
	304	haptic->type = MAX77693_HAPTIC_LRA;
	305	haptic->mode = MAX77693_HAPTIC_EXTERNAL_MODE;
a3b3ca75 JK	306	haptic->suspend_state = false;
a3b3ca75 JK	307
6eaa247a KK	308	/* Variant-specific init */
	309	haptic->dev_type = platform_get_device_id(pdev)->driver_data;
	310	switch (haptic->dev_type) {
	311	case TYPE_MAX77693:
	312	haptic->regmap_haptic = max77693->regmap_haptic;
	313	break;
56bbc99e KK	314	case TYPE_MAX77843:
	315	haptic->regmap_haptic = max77693->regmap;
	316	break;
6eaa247a KK	317	default:
	318	dev_err(&pdev->dev, "unsupported device type: %u\n",
	319	haptic->dev_type);
	320	return -EINVAL;
	321	}
	322
a3b3ca75 JK	323	INIT_WORK(&haptic->work, max77693_haptic_play_work);
	324
	325	/* Get pwm and regulatot for haptic device */
	326	haptic->pwm_dev = devm_pwm_get(&pdev->dev, NULL);
	327	if (IS_ERR(haptic->pwm_dev)) {
	328	dev_err(&pdev->dev, "failed to get pwm device\n");
	329	return PTR_ERR(haptic->pwm_dev);
	330	}
	331
	332	haptic->motor_reg = devm_regulator_get(&pdev->dev, "haptic");
	333	if (IS_ERR(haptic->motor_reg)) {
	334	dev_err(&pdev->dev, "failed to get regulator\n");
	335	return PTR_ERR(haptic->motor_reg);
	336	}
	337
	338	/* Initialize input device for haptic device */
	339	haptic->input_dev = devm_input_allocate_device(&pdev->dev);
	340	if (!haptic->input_dev) {
	341	dev_err(&pdev->dev, "failed to allocate input device\n");
	342	return -ENOMEM;
	343	}
	344
	345	haptic->input_dev->name = "max77693-haptic";
	346	haptic->input_dev->id.version = 1;
	347	haptic->input_dev->dev.parent = &pdev->dev;
	348	haptic->input_dev->open = max77693_haptic_open;
	349	haptic->input_dev->close = max77693_haptic_close;
	350	input_set_drvdata(haptic->input_dev, haptic);
	351	input_set_capability(haptic->input_dev, EV_FF, FF_RUMBLE);
	352
	353	error = input_ff_create_memless(haptic->input_dev, NULL,
	354	max77693_haptic_play_effect);
	355	if (error) {
	356	dev_err(&pdev->dev, "failed to create force-feedback\n");
	357	return error;
	358	}
	359
	360	error = input_register_device(haptic->input_dev);
	361	if (error) {
	362	dev_err(&pdev->dev, "failed to register input device\n");
	363	return error;
	364	}
	365
	366	platform_set_drvdata(pdev, haptic);
	367
	368	return 0;
	369	}
	370
97a652a8	371	static int __maybe_unused max77693_haptic_suspend(struct device *dev)
a3b3ca75 JK	372	{
	373	struct platform_device *pdev = to_platform_device(dev);
	374	struct max77693_haptic *haptic = platform_get_drvdata(pdev);
	375
	376	if (haptic->enabled) {
	377	max77693_haptic_disable(haptic);
	378	haptic->suspend_state = true;
	379	}
	380
	381	return 0;
	382	}
	383
97a652a8	384	static int __maybe_unused max77693_haptic_resume(struct device *dev)
a3b3ca75 JK	385	{
	386	struct platform_device *pdev = to_platform_device(dev);
	387	struct max77693_haptic *haptic = platform_get_drvdata(pdev);
	388
	389	if (haptic->suspend_state) {
	390	max77693_haptic_enable(haptic);
	391	haptic->suspend_state = false;
	392	}
	393
	394	return 0;
	395	}
a3b3ca75 JK	396
	397	static SIMPLE_DEV_PM_OPS(max77693_haptic_pm_ops,
	398	max77693_haptic_suspend, max77693_haptic_resume);
	399
6eaa247a KK	400	static const struct platform_device_id max77693_haptic_id[] = {
6eaa247a KK	401	{ "max77693-haptic", TYPE_MAX77693 },
56bbc99e	402	{ "max77843-haptic", TYPE_MAX77843 },
6eaa247a KK	403	{},
	404	};
	405	MODULE_DEVICE_TABLE(platform, max77693_haptic_id);
	406
a3b3ca75 JK	407	static struct platform_driver max77693_haptic_driver = {
	408	.driver = {
	409	.name = "max77693-haptic",
a3b3ca75 JK	410	.pm = &max77693_haptic_pm_ops,
	411	},
	412	.probe = max77693_haptic_probe,
6eaa247a	413	.id_table = max77693_haptic_id,
a3b3ca75 JK	414	};
	415	module_platform_driver(max77693_haptic_driver);
	416
	417	MODULE_AUTHOR("Jaewon Kim <jaewon02.kim@samsung.com>");
56bbc99e KK	418	MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski@samsung.com>");
56bbc99e KK	419	MODULE_DESCRIPTION("MAXIM 77693/77843 Haptic driver");
a3b3ca75 JK	420	MODULE_ALIAS("platform:max77693-haptic");
a3b3ca75 JK	421	MODULE_LICENSE("GPL");