[mirror_ubuntu-focal-kernel.git] / drivers / input / misc / twl6040-vibra.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * twl6040-vibra.c - TWL6040 Vibrator driver
 *
 * Author:      Jorge Eduardo Candelaria <jorge.candelaria@ti.com>
 * Author:      Misael Lopez Cruz <misael.lopez@ti.com>
 *
 * Copyright:   (C) 2011 Texas Instruments, Inc.
 *
 * Based on twl4030-vibra.c by Henrik Saari <henrik.saari@nokia.com>
 *				Felipe Balbi <felipe.balbi@nokia.com>
 *				Jari Vanhala <ext-javi.vanhala@nokia.com>
 */
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/workqueue.h>
#include <linux/input.h>
#include <linux/mfd/twl6040.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/regulator/consumer.h>

#define EFFECT_DIR_180_DEG	0x8000

/* Recommended modulation index 85% */
#define TWL6040_VIBRA_MOD	85

#define TWL6040_NUM_SUPPLIES 2

struct vibra_info {
	struct device *dev;
	struct input_dev *input_dev;
	struct work_struct play_work;

	int irq;

	bool enabled;
	int weak_speed;
	int strong_speed;
	int direction;

	unsigned int vibldrv_res;
	unsigned int vibrdrv_res;
	unsigned int viblmotor_res;
	unsigned int vibrmotor_res;

	struct regulator_bulk_data supplies[TWL6040_NUM_SUPPLIES];

	struct twl6040 *twl6040;
};

static irqreturn_t twl6040_vib_irq_handler(int irq, void *data)
{
	struct vibra_info *info = data;
	struct twl6040 *twl6040 = info->twl6040;
	u8 status;

	status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS);
	if (status & TWL6040_VIBLOCDET) {
		dev_warn(info->dev, "Left Vibrator overcurrent detected\n");
		twl6040_clear_bits(twl6040, TWL6040_REG_VIBCTLL,
				   TWL6040_VIBENA);
	}
	if (status & TWL6040_VIBROCDET) {
		dev_warn(info->dev, "Right Vibrator overcurrent detected\n");
		twl6040_clear_bits(twl6040, TWL6040_REG_VIBCTLR,
				   TWL6040_VIBENA);
	}

	return IRQ_HANDLED;
}

static void twl6040_vibra_enable(struct vibra_info *info)
{
	struct twl6040 *twl6040 = info->twl6040;
	int ret;

	ret = regulator_bulk_enable(ARRAY_SIZE(info->supplies), info->supplies);
	if (ret) {
		dev_err(info->dev, "failed to enable regulators %d\n", ret);
		return;
	}

	twl6040_power(info->twl6040, 1);
	if (twl6040_get_revid(twl6040) <= TWL6040_REV_ES1_1) {
		/*
		 * ERRATA: Disable overcurrent protection for at least
		 * 3ms when enabling vibrator drivers to avoid false
		 * overcurrent detection
		 */
		twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
				  TWL6040_VIBENA | TWL6040_VIBCTRL);
		twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
				  TWL6040_VIBENA | TWL6040_VIBCTRL);
		usleep_range(3000, 3500);
	}

	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
			  TWL6040_VIBENA);
	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
			  TWL6040_VIBENA);

	info->enabled = true;
}

static void twl6040_vibra_disable(struct vibra_info *info)
{
	struct twl6040 *twl6040 = info->twl6040;

	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL, 0x00);
	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR, 0x00);
	twl6040_power(info->twl6040, 0);

	regulator_bulk_disable(ARRAY_SIZE(info->supplies), info->supplies);

	info->enabled = false;
}

static u8 twl6040_vibra_code(int vddvib, int vibdrv_res, int motor_res,
			     int speed, int direction)
{
	int vpk, max_code;
	u8 vibdat;

	/* output swing */
	vpk = (vddvib * motor_res * TWL6040_VIBRA_MOD) /
		(100 * (vibdrv_res + motor_res));

	/* 50mV per VIBDAT code step */
	max_code = vpk / 50;
	if (max_code > TWL6040_VIBDAT_MAX)
		max_code = TWL6040_VIBDAT_MAX;

	/* scale speed to max allowed code */
	vibdat = (u8)((speed * max_code) / USHRT_MAX);

	/* 2's complement for direction > 180 degrees */
	vibdat *= direction;

	return vibdat;
}

static void twl6040_vibra_set_effect(struct vibra_info *info)
{
	struct twl6040 *twl6040 = info->twl6040;
	u8 vibdatl, vibdatr;
	int volt;

	/* weak motor */
	volt = regulator_get_voltage(info->supplies[0].consumer) / 1000;
	vibdatl = twl6040_vibra_code(volt, info->vibldrv_res,
				     info->viblmotor_res,
				     info->weak_speed, info->direction);

	/* strong motor */
	volt = regulator_get_voltage(info->supplies[1].consumer) / 1000;
	vibdatr = twl6040_vibra_code(volt, info->vibrdrv_res,
				     info->vibrmotor_res,
				     info->strong_speed, info->direction);

	twl6040_reg_write(twl6040, TWL6040_REG_VIBDATL, vibdatl);
	twl6040_reg_write(twl6040, TWL6040_REG_VIBDATR, vibdatr);
}

static void vibra_play_work(struct work_struct *work)
{
	struct vibra_info *info = container_of(work,
				struct vibra_info, play_work);
	int ret;

	/* Do not allow effect, while the routing is set to use audio */
	ret = twl6040_get_vibralr_status(info->twl6040);
	if (ret & TWL6040_VIBSEL) {
		dev_info(info->dev, "Vibra is configured for audio\n");
		return;
	}

	if (info->weak_speed || info->strong_speed) {
		if (!info->enabled)
			twl6040_vibra_enable(info);

		twl6040_vibra_set_effect(info);
	} else if (info->enabled)
		twl6040_vibra_disable(info);

}

static int vibra_play(struct input_dev *input, void *data,
		      struct ff_effect *effect)
{
	struct vibra_info *info = input_get_drvdata(input);

	info->weak_speed = effect->u.rumble.weak_magnitude;
	info->strong_speed = effect->u.rumble.strong_magnitude;
	info->direction = effect->direction < EFFECT_DIR_180_DEG ? 1 : -1;

	schedule_work(&info->play_work);

	return 0;
}

static void twl6040_vibra_close(struct input_dev *input)
{
	struct vibra_info *info = input_get_drvdata(input);

	cancel_work_sync(&info->play_work);

	if (info->enabled)
		twl6040_vibra_disable(info);
}

static int __maybe_unused twl6040_vibra_suspend(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct vibra_info *info = platform_get_drvdata(pdev);

	cancel_work_sync(&info->play_work);

	if (info->enabled)
		twl6040_vibra_disable(info);

	return 0;
}

static SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops, twl6040_vibra_suspend, NULL);

static int twl6040_vibra_probe(struct platform_device *pdev)
{
	struct device *twl6040_core_dev = pdev->dev.parent;
	struct device_node *twl6040_core_node;
	struct vibra_info *info;
	int vddvibl_uV = 0;
	int vddvibr_uV = 0;
	int error;

	twl6040_core_node = of_get_child_by_name(twl6040_core_dev->of_node,
						 "vibra");
	if (!twl6040_core_node) {
		dev_err(&pdev->dev, "parent of node is missing?\n");
		return -EINVAL;
	}

	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
	if (!info) {
		of_node_put(twl6040_core_node);
		dev_err(&pdev->dev, "couldn't allocate memory\n");
		return -ENOMEM;
	}

	info->dev = &pdev->dev;

	info->twl6040 = dev_get_drvdata(pdev->dev.parent);

	of_property_read_u32(twl6040_core_node, "ti,vibldrv-res",
			     &info->vibldrv_res);
	of_property_read_u32(twl6040_core_node, "ti,vibrdrv-res",
			     &info->vibrdrv_res);
	of_property_read_u32(twl6040_core_node, "ti,viblmotor-res",
			     &info->viblmotor_res);
	of_property_read_u32(twl6040_core_node, "ti,vibrmotor-res",
			     &info->vibrmotor_res);
	of_property_read_u32(twl6040_core_node, "ti,vddvibl-uV", &vddvibl_uV);
	of_property_read_u32(twl6040_core_node, "ti,vddvibr-uV", &vddvibr_uV);

	of_node_put(twl6040_core_node);

	if ((!info->vibldrv_res && !info->viblmotor_res) ||
	    (!info->vibrdrv_res && !info->vibrmotor_res)) {
		dev_err(info->dev, "invalid vibra driver/motor resistance\n");
		return -EINVAL;
	}

	info->irq = platform_get_irq(pdev, 0);
	if (info->irq < 0) {
		dev_err(info->dev, "invalid irq\n");
		return -EINVAL;
	}

	error = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
					  twl6040_vib_irq_handler,
					  IRQF_ONESHOT,
					  "twl6040_irq_vib", info);
	if (error) {
		dev_err(info->dev, "VIB IRQ request failed: %d\n", error);
		return error;
	}

	info->supplies[0].supply = "vddvibl";
	info->supplies[1].supply = "vddvibr";
	/*
	 * When booted with Device tree the regulators are attached to the
	 * parent device (twl6040 MFD core)
	 */
	error = devm_regulator_bulk_get(twl6040_core_dev,
					ARRAY_SIZE(info->supplies),
					info->supplies);
	if (error) {
		dev_err(info->dev, "couldn't get regulators %d\n", error);
		return error;
	}

	if (vddvibl_uV) {
		error = regulator_set_voltage(info->supplies[0].consumer,
					      vddvibl_uV, vddvibl_uV);
		if (error) {
			dev_err(info->dev, "failed to set VDDVIBL volt %d\n",
				error);
			return error;
		}
	}

	if (vddvibr_uV) {
		error = regulator_set_voltage(info->supplies[1].consumer,
					      vddvibr_uV, vddvibr_uV);
		if (error) {
			dev_err(info->dev, "failed to set VDDVIBR volt %d\n",
				error);
			return error;
		}
	}

	INIT_WORK(&info->play_work, vibra_play_work);

	info->input_dev = devm_input_allocate_device(&pdev->dev);
	if (!info->input_dev) {
		dev_err(info->dev, "couldn't allocate input device\n");
		return -ENOMEM;
	}

	input_set_drvdata(info->input_dev, info);

	info->input_dev->name = "twl6040:vibrator";
	info->input_dev->id.version = 1;
	info->input_dev->close = twl6040_vibra_close;
	__set_bit(FF_RUMBLE, info->input_dev->ffbit);

	error = input_ff_create_memless(info->input_dev, NULL, vibra_play);
	if (error) {
		dev_err(info->dev, "couldn't register vibrator to FF\n");
		return error;
	}

	error = input_register_device(info->input_dev);
	if (error) {
		dev_err(info->dev, "couldn't register input device\n");
		return error;
	}

	platform_set_drvdata(pdev, info);

	return 0;
}

static struct platform_driver twl6040_vibra_driver = {
	.probe		= twl6040_vibra_probe,
	.driver		= {
		.name	= "twl6040-vibra",
		.pm	= &twl6040_vibra_pm_ops,
	},
};
module_platform_driver(twl6040_vibra_driver);

MODULE_ALIAS("platform:twl6040-vibra");
MODULE_DESCRIPTION("TWL6040 Vibra driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>");
MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
Commit	Line	Data
2b27bdcc	1	// SPDX-License-Identifier: GPL-2.0-only
cc697d38 MLC	2	/*
	3	* twl6040-vibra.c - TWL6040 Vibrator driver
	4	*
	5	* Author: Jorge Eduardo Candelaria <jorge.candelaria@ti.com>
	6	* Author: Misael Lopez Cruz <misael.lopez@ti.com>
	7	*
	8	* Copyright: (C) 2011 Texas Instruments, Inc.
	9	*
	10	* Based on twl4030-vibra.c by Henrik Saari <henrik.saari@nokia.com>
	11	* Felipe Balbi <felipe.balbi@nokia.com>
	12	* Jari Vanhala <ext-javi.vanhala@nokia.com>
cc697d38 MLC	13	*/
	14	#include <linux/module.h>
	15	#include <linux/platform_device.h>
9ac7b1a3	16	#include <linux/of.h>
cc697d38	17	#include <linux/workqueue.h>
8eaeb939	18	#include <linux/input.h>
cc697d38 MLC	19	#include <linux/mfd/twl6040.h>
	20	#include <linux/slab.h>
	21	#include <linux/delay.h>
	22	#include <linux/regulator/consumer.h>
	23
	24	#define EFFECT_DIR_180_DEG 0x8000
	25
	26	/* Recommended modulation index 85% */
	27	#define TWL6040_VIBRA_MOD 85
	28
	29	#define TWL6040_NUM_SUPPLIES 2
	30
	31	struct vibra_info {
	32	struct device *dev;
	33	struct input_dev *input_dev;
cc697d38	34	struct work_struct play_work;
9e4cc255	35
625cbe46	36	int irq;
cc697d38 MLC	37
	38	bool enabled;
	39	int weak_speed;
	40	int strong_speed;
	41	int direction;
	42
	43	unsigned int vibldrv_res;
	44	unsigned int vibrdrv_res;
	45	unsigned int viblmotor_res;
	46	unsigned int vibrmotor_res;
	47
	48	struct regulator_bulk_data supplies[TWL6040_NUM_SUPPLIES];
	49
	50	struct twl6040 *twl6040;
	51	};
	52
	53	static irqreturn_t twl6040_vib_irq_handler(int irq, void *data)
	54	{
	55	struct vibra_info *info = data;
	56	struct twl6040 *twl6040 = info->twl6040;
	57	u8 status;
	58
	59	status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS);
	60	if (status & TWL6040_VIBLOCDET) {
	61	dev_warn(info->dev, "Left Vibrator overcurrent detected\n");
	62	twl6040_clear_bits(twl6040, TWL6040_REG_VIBCTLL,
1e036f65	63	TWL6040_VIBENA);
cc697d38 MLC	64	}
	65	if (status & TWL6040_VIBROCDET) {
	66	dev_warn(info->dev, "Right Vibrator overcurrent detected\n");
	67	twl6040_clear_bits(twl6040, TWL6040_REG_VIBCTLR,
1e036f65	68	TWL6040_VIBENA);
cc697d38 MLC	69	}
	70
	71	return IRQ_HANDLED;
	72	}
	73
	74	static void twl6040_vibra_enable(struct vibra_info *info)
	75	{
	76	struct twl6040 *twl6040 = info->twl6040;
	77	int ret;
	78
	79	ret = regulator_bulk_enable(ARRAY_SIZE(info->supplies), info->supplies);
	80	if (ret) {
	81	dev_err(info->dev, "failed to enable regulators %d\n", ret);
	82	return;
	83	}
	84
	85	twl6040_power(info->twl6040, 1);
7e968985	86	if (twl6040_get_revid(twl6040) <= TWL6040_REV_ES1_1) {
cc697d38 MLC	87	/*
	88	* ERRATA: Disable overcurrent protection for at least
	89	* 3ms when enabling vibrator drivers to avoid false
	90	* overcurrent detection
	91	*/
	92	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
1e036f65	93	TWL6040_VIBENA \| TWL6040_VIBCTRL);
cc697d38	94	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
1e036f65	95	TWL6040_VIBENA \| TWL6040_VIBCTRL);
cc697d38 MLC	96	usleep_range(3000, 3500);
	97	}
	98
	99	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
1e036f65	100	TWL6040_VIBENA);
cc697d38	101	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
1e036f65	102	TWL6040_VIBENA);
cc697d38 MLC	103
	104	info->enabled = true;
	105	}
	106
	107	static void twl6040_vibra_disable(struct vibra_info *info)
	108	{
	109	struct twl6040 *twl6040 = info->twl6040;
	110
	111	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL, 0x00);
	112	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR, 0x00);
	113	twl6040_power(info->twl6040, 0);
	114
	115	regulator_bulk_disable(ARRAY_SIZE(info->supplies), info->supplies);
	116
	117	info->enabled = false;
	118	}
	119
	120	static u8 twl6040_vibra_code(int vddvib, int vibdrv_res, int motor_res,
	121	int speed, int direction)
	122	{
	123	int vpk, max_code;
	124	u8 vibdat;
	125
	126	/* output swing */
	127	vpk = (vddvib * motor_res * TWL6040_VIBRA_MOD) /
	128	(100 * (vibdrv_res + motor_res));
	129
	130	/* 50mV per VIBDAT code step */
	131	max_code = vpk / 50;
	132	if (max_code > TWL6040_VIBDAT_MAX)
	133	max_code = TWL6040_VIBDAT_MAX;
	134
	135	/* scale speed to max allowed code */
	136	vibdat = (u8)((speed * max_code) / USHRT_MAX);
	137
	138	/* 2's complement for direction > 180 degrees */
	139	vibdat *= direction;
	140
	141	return vibdat;
	142	}
	143
	144	static void twl6040_vibra_set_effect(struct vibra_info *info)
	145	{
	146	struct twl6040 *twl6040 = info->twl6040;
	147	u8 vibdatl, vibdatr;
	148	int volt;
	149
	150	/* weak motor */
	151	volt = regulator_get_voltage(info->supplies[0].consumer) / 1000;
	152	vibdatl = twl6040_vibra_code(volt, info->vibldrv_res,
	153	info->viblmotor_res,
	154	info->weak_speed, info->direction);
	155
	156	/* strong motor */
	157	volt = regulator_get_voltage(info->supplies[1].consumer) / 1000;
	158	vibdatr = twl6040_vibra_code(volt, info->vibrdrv_res,
	159	info->vibrmotor_res,
	160	info->strong_speed, info->direction);
	161
	162	twl6040_reg_write(twl6040, TWL6040_REG_VIBDATL, vibdatl);
	163	twl6040_reg_write(twl6040, TWL6040_REG_VIBDATR, vibdatr);
	164	}
	165
	166	static void vibra_play_work(struct work_struct *work)
167	{
168	struct vibra_info *info = container_of(work,
169	struct vibra_info, play_work);
28a994fa NS	170	int ret;
	171
	172	/* Do not allow effect, while the routing is set to use audio */
	173	ret = twl6040_get_vibralr_status(info->twl6040);
	174	if (ret & TWL6040_VIBSEL) {
	175	dev_info(info->dev, "Vibra is configured for audio\n");
	176	return;
	177	}
cc697d38	178
cc697d38 MLC	179	if (info->weak_speed \|\| info->strong_speed) {
	180	if (!info->enabled)
	181	twl6040_vibra_enable(info);
	182
	183	twl6040_vibra_set_effect(info);
	184	} else if (info->enabled)
	185	twl6040_vibra_disable(info);
	186
cc697d38 MLC	187	}
	188
	189	static int vibra_play(struct input_dev input, void data,
	190	struct ff_effect *effect)
	191	{
	192	struct vibra_info *info = input_get_drvdata(input);
5f07c32e	193
cc697d38 MLC	194	info->weak_speed = effect->u.rumble.weak_magnitude;
	195	info->strong_speed = effect->u.rumble.strong_magnitude;
	196	info->direction = effect->direction < EFFECT_DIR_180_DEG ? 1 : -1;
	197
5f7fb6f1	198	schedule_work(&info->play_work);
cc697d38 MLC	199
	200	return 0;
	201	}
	202
	203	static void twl6040_vibra_close(struct input_dev *input)
	204	{
	205	struct vibra_info *info = input_get_drvdata(input);
	206
	207	cancel_work_sync(&info->play_work);
	208
cc697d38 MLC	209	if (info->enabled)
cc697d38 MLC	210	twl6040_vibra_disable(info);
cc697d38 MLC	211	}
cc697d38 MLC	212
97a652a8	213	static int __maybe_unused twl6040_vibra_suspend(struct device *dev)
cc697d38 MLC	214	{
	215	struct platform_device *pdev = to_platform_device(dev);
	216	struct vibra_info *info = platform_get_drvdata(pdev);
	217
9e4cc255	218	cancel_work_sync(&info->play_work);
cc697d38 MLC	219
	220	if (info->enabled)
	221	twl6040_vibra_disable(info);
	222
cc697d38 MLC	223	return 0;
cc697d38 MLC	224	}
cc697d38 MLC	225
	226	static SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops, twl6040_vibra_suspend, NULL);
	227
5298cc4c	228	static int twl6040_vibra_probe(struct platform_device *pdev)
cc697d38	229	{
e7ec014a	230	struct device *twl6040_core_dev = pdev->dev.parent;
32e573c4	231	struct device_node *twl6040_core_node;
cc697d38	232	struct vibra_info *info;
9ac7b1a3 PU	233	int vddvibl_uV = 0;
9ac7b1a3 PU	234	int vddvibr_uV = 0;
1f9e1470	235	int error;
cc697d38	236
dcaf12a8	237	twl6040_core_node = of_get_child_by_name(twl6040_core_dev->of_node,
e7ec014a	238	"vibra");
7bf2a98a PU	239	if (!twl6040_core_node) {
7bf2a98a PU	240	dev_err(&pdev->dev, "parent of node is missing?\n");
cc697d38 MLC	241	return -EINVAL;
	242	}
	243
b2ebcc1b	244	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
cc697d38	245	if (!info) {
f048dd17	246	of_node_put(twl6040_core_node);
cc697d38 MLC	247	dev_err(&pdev->dev, "couldn't allocate memory\n");
	248	return -ENOMEM;
	249	}
	250
	251	info->dev = &pdev->dev;
9ac7b1a3	252
cc697d38	253	info->twl6040 = dev_get_drvdata(pdev->dev.parent);
7bf2a98a PU	254
	255	of_property_read_u32(twl6040_core_node, "ti,vibldrv-res",
	256	&info->vibldrv_res);
	257	of_property_read_u32(twl6040_core_node, "ti,vibrdrv-res",
	258	&info->vibrdrv_res);
	259	of_property_read_u32(twl6040_core_node, "ti,viblmotor-res",
	260	&info->viblmotor_res);
	261	of_property_read_u32(twl6040_core_node, "ti,vibrmotor-res",
	262	&info->vibrmotor_res);
	263	of_property_read_u32(twl6040_core_node, "ti,vddvibl-uV", &vddvibl_uV);
	264	of_property_read_u32(twl6040_core_node, "ti,vddvibr-uV", &vddvibr_uV);
9ac7b1a3	265
f048dd17 LC	266	of_node_put(twl6040_core_node);
f048dd17 LC	267
cc697d38 MLC	268	if ((!info->vibldrv_res && !info->viblmotor_res) \|\|
	269	(!info->vibrdrv_res && !info->vibrmotor_res)) {
	270	dev_err(info->dev, "invalid vibra driver/motor resistance\n");
b2ebcc1b	271	return -EINVAL;
cc697d38 MLC	272	}
cc697d38 MLC	273
625cbe46 PU	274	info->irq = platform_get_irq(pdev, 0);
	275	if (info->irq < 0) {
	276	dev_err(info->dev, "invalid irq\n");
b2ebcc1b	277	return -EINVAL;
625cbe46 PU	278	}
625cbe46 PU	279
1f9e1470	280	error = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
4be01a29 FE	281	twl6040_vib_irq_handler,
4be01a29 FE	282	IRQF_ONESHOT,
1f9e1470 FE	283	"twl6040_irq_vib", info);
	284	if (error) {
	285	dev_err(info->dev, "VIB IRQ request failed: %d\n", error);
	286	return error;
cc697d38 MLC	287	}
	288
	289	info->supplies[0].supply = "vddvibl";
	290	info->supplies[1].supply = "vddvibr";
e7ec014a PU	291	/*
	292	* When booted with Device tree the regulators are attached to the
	293	* parent device (twl6040 MFD core)
	294	*/
1f9e1470 FE	295	error = devm_regulator_bulk_get(twl6040_core_dev,
	296	ARRAY_SIZE(info->supplies),
	297	info->supplies);
	298	if (error) {
	299	dev_err(info->dev, "couldn't get regulators %d\n", error);
	300	return error;
cc697d38 MLC	301	}
cc697d38 MLC	302
9ac7b1a3	303	if (vddvibl_uV) {
1f9e1470 FE	304	error = regulator_set_voltage(info->supplies[0].consumer,
	305	vddvibl_uV, vddvibl_uV);
	306	if (error) {
cc697d38	307	dev_err(info->dev, "failed to set VDDVIBL volt %d\n",
1f9e1470 FE	308	error);
1f9e1470 FE	309	return error;
cc697d38 MLC	310	}
	311	}
	312
9ac7b1a3	313	if (vddvibr_uV) {
1f9e1470 FE	314	error = regulator_set_voltage(info->supplies[1].consumer,
	315	vddvibr_uV, vddvibr_uV);
	316	if (error) {
cc697d38	317	dev_err(info->dev, "failed to set VDDVIBR volt %d\n",
1f9e1470 FE	318	error);
1f9e1470 FE	319	return error;
cc697d38 MLC	320	}
	321	}
	322
cc697d38 MLC	323	INIT_WORK(&info->play_work, vibra_play_work);
cc697d38 MLC	324
1f9e1470 FE	325	info->input_dev = devm_input_allocate_device(&pdev->dev);
1f9e1470 FE	326	if (!info->input_dev) {
b2ebcc1b	327	dev_err(info->dev, "couldn't allocate input device\n");
1f9e1470	328	return -ENOMEM;
b2ebcc1b PU	329	}
	330
	331	input_set_drvdata(info->input_dev, info);
	332
	333	info->input_dev->name = "twl6040:vibrator";
	334	info->input_dev->id.version = 1;
b2ebcc1b PU	335	info->input_dev->close = twl6040_vibra_close;
	336	__set_bit(FF_RUMBLE, info->input_dev->ffbit);
	337
1f9e1470 FE	338	error = input_ff_create_memless(info->input_dev, NULL, vibra_play);
1f9e1470 FE	339	if (error) {
b2ebcc1b	340	dev_err(info->dev, "couldn't register vibrator to FF\n");
1f9e1470	341	return error;
b2ebcc1b PU	342	}
b2ebcc1b PU	343
1f9e1470 FE	344	error = input_register_device(info->input_dev);
1f9e1470 FE	345	if (error) {
b2ebcc1b	346	dev_err(info->dev, "couldn't register input device\n");
1f9e1470	347	return error;
b2ebcc1b PU	348	}
	349
	350	platform_set_drvdata(pdev, info);
	351
cc697d38 MLC	352	return 0;
	353	}
	354
	355	static struct platform_driver twl6040_vibra_driver = {
	356	.probe = twl6040_vibra_probe,
cc697d38 MLC	357	.driver = {
cc697d38 MLC	358	.name = "twl6040-vibra",
cc697d38 MLC	359	.pm = &twl6040_vibra_pm_ops,
	360	},
	361	};
840a746b	362	module_platform_driver(twl6040_vibra_driver);
cc697d38 MLC	363
	364	MODULE_ALIAS("platform:twl6040-vibra");
	365	MODULE_DESCRIPTION("TWL6040 Vibra driver");
	366	MODULE_LICENSE("GPL");
	367	MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>");
	368	MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");