u5500: timed output driver for ab5500 vibrator

Simple timed output vibrator driver for AB5500 MFD chips.
This chip supports Rotary and Linear vibrator hardware types.
Resonance frequency of 100-198 Hz is supported.

ST-Ericsson ID: WP 256408

Signed-off-by: Avinash A <Avinash.a@stericsson.com>
Signed-off-by: Robert Marklund <robert.marklund@stericsson.com>

u5500: enable vibrator when new timeout is requested

with this patch new timeout value will be
accepted/updated even if vibrator is already
executing.

ST-Ericsson ID: 360178

Signed-off-by: Avinash A <Avinash.a@stericsson.com>

vibra:Remove unnecessary assignment of dev->parent

Remove unnecessary assignment of dev->parent,
because of this during timed out class unregister
it is trying to free resources of parent which
does not exist

ST-Ericsson ID: 410065

Signed-off-by: Naga Radhesh <naga.radheshy@stericsson.com>

u5500: Add vibra end of life support

Detect and disable vibra when vibra end of life(eol)
condition is detected at boot sequence.

ST-Ericsson ID: 265890

Signed-off-by: Rajagopala V <rajagopala.v@stericsson.com>

6 files changed, 574 insertions, 0 deletions

diff --git a/drivers/mfd/ab5500-gpadc.c b/drivers/mfd/ab5500-gpadc.c
index 4718e26bee8..fe05ffbadfd 100644
--- a/drivers/mfd/ab5500-gpadc.c
+++ b/drivers/mfd/ab5500-gpadc.c
@@ -99,6 +99,7 @@
 #define MIN_INDEX			0x02
 #define MAX_INDEX			0x03
 #define CTRL_INDEX			0x01
+#define KELVIN_SCALE_VOL45		0x00
 
 /* GPADC constants from AB5500 spec  */
 #define GPADC0_MIN		0
@@ -129,6 +130,8 @@
 #define USBID_MAX		1800
 #define KELVIN_MIN		0
 #define KELVIN_MAX		4500
+#define VIBRA_MIN		0
+#define VIBRA_MAX		4500
 
 /* This is used for calibration */
 #define ADC_RESOLUTION			1023
@@ -253,7 +256,9 @@ struct adc_data adc_tab[] = {
 	ADC_DATA(ACC_DETECT3, 0x19, ACCDET3_MIN, ACCDET3_MAX, 0),
 	ADC_DATA(MAIN_BAT_V_TRIG_MIN, 0x0C, VBAT_MIN, VBAT_MAX, 0),
 	ADC_DATA(MAIN_BAT_V_TXON_TRIG_MIN, 0x0C, VBAT_MIN, VBAT_MAX, 0),
+	ADC_DATA(VIBRA_KELVIN, 0x16, VIBRA_MIN, VIBRA_MAX, 0),
 };
+
 /**
  * ab5500_gpadc_get() - returns a reference to the primary AB5500 GPADC
  * (i.e. the first GPADC in the instance list)
@@ -279,6 +284,7 @@ static int ab5500_gpadc_ad_to_voltage(struct ab5500_gpadc *gpadc,
 	int res;
 
 	switch (in) {
+	case VIBRA_KELVIN:
 	case GPADC0_V:
 	case PCB_TEMP:
 	case BTEMP_BALL:
@@ -404,6 +410,15 @@ int ab5500_gpadc_convert(struct ab5500_gpadc *gpadc, u8 input)
 			goto out;
 		}
 		break;
+	case VIBRA_KELVIN:
+		ret = abx500_set_register_interruptible(gpadc->dev,
+				AB5500_BANK_ADC, AB5500_GPADC_KELVIN_CTRL,
+				KELVIN_SCALE_VOL45);
+		if (ret < 0) {
+			dev_err(gpadc->dev, "gpadc: fail to set kelv scale\n");
+			goto out;
+		}
+		break;
 	case USB_CHARGER_C:
 	case VBUS_V:
 	case BK_BAT_V:
diff --git a/drivers/staging/android/Kconfig b/drivers/staging/android/Kconfig
index 7823c2a19ed..a4495997d1b 100644
--- a/drivers/staging/android/Kconfig
+++ b/drivers/staging/android/Kconfig
@@ -8,6 +8,16 @@ config ANDROID
 
 if ANDROID
 
+config ANDROID_AB5500_TIMED_VIBRA
+	bool "AB5500 Timed Output Vibrator"
+	depends on AB5500_CORE
+	depends on ANDROID_TIMED_OUTPUT
+	default y
+	help
+	  Say Y here to enable linear/rotary vibrator driver using timed
+	  output class device for ST-Ericsson's based on ST-Ericsson's
+	  AB5500 Mix-Sig PMIC
+
 config ANDROID_BINDER_IPC
 	bool "Android Binder IPC Driver"
 	default n
diff --git a/drivers/staging/android/Makefile b/drivers/staging/android/Makefile
index e529c63da57..0d642936a0b 100644
--- a/drivers/staging/android/Makefile
+++ b/drivers/staging/android/Makefile
@@ -1,3 +1,4 @@
+obj-$(CONFIG_ANDROID_AB5500_TIMED_VIBRA)	+= ab5500-timed-vibra.o
 obj-$(CONFIG_ANDROID_BINDER_IPC)	+= binder.o
 obj-$(CONFIG_ASHMEM)			+= ashmem.o
 obj-$(CONFIG_ANDROID_LOGGER)		+= logger.o
diff --git a/drivers/staging/android/ab5500-timed-vibra.c b/drivers/staging/android/ab5500-timed-vibra.c
new file mode 100644
index 00000000000..35c627a6285
--- /dev/null
+++ b/drivers/staging/android/ab5500-timed-vibra.c
@@ -0,0 +1,490 @@
+/*
+ * ab5500-vibra.c - driver for vibrator in ST-Ericsson AB5500 chip
+ *
+ * Copyright (C) 2011 ST-Ericsson SA.
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * Author: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/hrtimer.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/wait.h>
+#include <linux/err.h>
+#include "timed_output.h"
+
+#include <linux/mfd/abx500.h>		/* abx500_* */
+#include <linux/mfd/abx500/ab5500.h>
+#include <linux/mfd/abx500/ab5500-gpadc.h>
+#include <linux/ab5500-vibra.h>
+
+#define AB5500_VIBRA_DEV_NAME          "ab5500:vibra"
+#define AB5500_VIBRA_DRV_NAME		"ab5500-vibrator"
+
+/* Vibrator Register Address Offsets */
+#define AB5500_VIB_CTRL		0x10
+#define AB5500_VIB_VOLT		0x11
+#define AB5500_VIB_FUND_FREQ	0x12	/* Linear vibra resonance freq. */
+#define AB5500_VIB_FUND_DUTY	0x13
+#define AB5500_KELVIN_ANA	0xB1
+#define AB5500_VIBRA_KELVIN	0xFE
+
+/* Vibrator Control */
+#define AB5500_VIB_DISABLE	(0x80)
+#define AB5500_VIB_PWR_ON	(0x40)
+#define AB5500_VIB_FUND_EN	(0x20)
+#define AB5500_VIB_FREQ_SHIFT	(0)
+#define AB5500_VIB_DUTY_SHIFT	(3)
+#define AB5500_VIB_VOLT_SHIFT	(0)
+#define AB5500_VIB_PULSE_SHIFT	(4)
+#define VIBRA_KELVIN_ENABLE	(0x90)
+#define VIBRA_KELVIN_VOUT	(0x20)
+
+/* Vibrator Freq. (in HZ) and Duty */
+enum ab5500_vibra_freq {
+	AB5500_VIB_FREQ_1HZ = 1,
+	AB5500_VIB_FREQ_2HZ,
+	AB5500_VIB_FREQ_4HZ,
+	AB5500_VIB_FREQ_8HZ,
+};
+
+enum ab5500_vibra_duty {
+	AB5500_VIB_DUTY_100 = 0,
+	AB5500_VIB_DUTY_75 = 8,
+	AB5500_VIB_DUTY_50 = 16,
+	AB5500_VIB_DUTY_25 = 24,
+};
+
+/* Linear vibrator resonance freq. duty */
+#define AB5500_VIB_RDUTY_50	(0x7F)
+
+/* Vibration magnitudes */
+#define AB5500_VIB_FREQ_MAX	(4)
+#define AB5500_VIB_DUTY_MAX	(4)
+
+static u8 vib_freq[AB5500_VIB_FREQ_MAX] = {
+	AB5500_VIB_FREQ_1HZ,
+	AB5500_VIB_FREQ_2HZ,
+	AB5500_VIB_FREQ_4HZ,
+	AB5500_VIB_FREQ_8HZ,
+};
+
+static u8 vib_duty[AB5500_VIB_DUTY_MAX] = {
+	AB5500_VIB_DUTY_100,
+	AB5500_VIB_DUTY_75,
+	AB5500_VIB_DUTY_50,
+	AB5500_VIB_DUTY_25,
+};
+
+/**
+ * struct ab5500_vibra - Vibrator driver interal info.
+ * @tdev:		Pointer to timed output device structure
+ * @dev:		Reference to vibra device structure
+ * @vibra_workqueue:    Pointer to vibrator workqueue structure
+ * @vibra_work:		Vibrator work
+ * @gpadc:		Gpadc instance
+ * @vibra_wait:		Vibrator wait queue head
+ * @vibra_lock:		Vibrator lock
+ * @timeout_ms:		Indicates how long time the vibrator will be enabled
+ * @timeout_start:	Start of vibrator in jiffies
+ * @pdata:		Local pointer to platform data with vibrator parameters
+ * @magnitude:		required vibration strength
+ * @enable:		Vibrator running status
+ * @eol:		Vibrator end of life(eol) status
+ **/
+struct ab5500_vibra {
+	struct timed_output_dev		tdev;
+	struct device			*dev;
+	struct workqueue_struct		*vibra_workqueue;
+	struct work_struct		vibra_work;
+	struct ab5500_gpadc		*gpadc;
+	wait_queue_head_t		vibra_wait;
+	spinlock_t			vibra_lock;
+	unsigned int			timeout_ms;
+	unsigned long			timeout_start;
+	struct ab5500_vibra_platform_data *pdata;
+	u8				magnitude;
+	bool				enable;
+	bool				eol;
+};
+
+static inline u8 vibra_magnitude(u8 mag)
+{
+	mag /= (AB5500_VIB_FREQ_MAX * AB5500_VIB_DUTY_MAX);
+	mag = vib_freq[mag / AB5500_VIB_FREQ_MAX] << AB5500_VIB_FREQ_SHIFT;
+	mag |= vib_duty[mag % AB5500_VIB_DUTY_MAX] << AB5500_VIB_DUTY_SHIFT;
+
+	return mag;
+}
+
+static int ab5500_setup_vibra_kelvin(struct ab5500_vibra* vibra)
+{
+	int ret;
+
+	/* Establish the kelvin IP connection to be measured */
+	ret = abx500_set_register_interruptible(vibra->dev,
+		AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP,
+		AB5500_KELVIN_ANA, VIBRA_KELVIN_ENABLE);
+	if (ret < 0) {
+		dev_err(vibra->dev, "failed to set kelvin network\n");
+		return ret;
+	}
+
+	/* Select vibra parameter to be measured */
+	ret = abx500_set_register_interruptible(vibra->dev, AB5500_BANK_VIBRA,
+		AB5500_VIBRA_KELVIN, VIBRA_KELVIN_VOUT);
+	if (ret < 0)
+		dev_err(vibra->dev, "failed to select the kelvin param\n");
+
+	return ret;
+}
+
+static int ab5500_vibra_start(struct ab5500_vibra* vibra)
+{
+	u8 ctrl = 0;
+
+	ctrl = AB5500_VIB_PWR_ON |
+		vibra_magnitude(vibra->magnitude);
+
+	if (vibra->pdata->type == AB5500_VIB_LINEAR)
+		ctrl |= AB5500_VIB_FUND_EN;
+
+	return abx500_set_register_interruptible(vibra->dev,
+			AB5500_BANK_VIBRA, AB5500_VIB_CTRL, ctrl);
+}
+
+static int ab5500_vibra_stop(struct ab5500_vibra* vibra)
+{
+	return abx500_mask_and_set_register_interruptible(vibra->dev,
+			AB5500_BANK_VIBRA, AB5500_VIB_CTRL,
+			AB5500_VIB_PWR_ON, 0);
+}
+
+static int ab5500_vibra_eol_check(struct ab5500_vibra* vibra)
+{
+	int ret, vout;
+
+	ret = ab5500_setup_vibra_kelvin(vibra);
+	if (ret < 0) {
+		dev_err(vibra->dev, "failed to setup kelvin network\n");
+		return ret;
+	}
+
+	/* Start vibra to measure voltage */
+	ret = ab5500_vibra_start(vibra);
+	if (ret < 0) {
+		dev_err(vibra->dev, "failed to start vibra\n");
+		return ret;
+	}
+	/* 20ms delay required for voltage rampup */
+	wait_event_interruptible_timeout(vibra->vibra_wait,
+			0, msecs_to_jiffies(20));
+
+	vout  = ab5500_gpadc_convert(vibra->gpadc, VIBRA_KELVIN);
+	if (vout < 0) {
+		dev_err(vibra->dev, "failed to read gpadc vibra\n");
+		return vout;
+	}
+
+	/* Stop vibra after measuring voltage */
+	ret  = ab5500_vibra_stop(vibra);
+	if (ret < 0) {
+		dev_err(vibra->dev, "failed to stop vibra\n");
+		return ret;
+	}
+	/* Check for vibra eol condition */
+	if (vout < vibra->pdata->eol_voltage) {
+		vibra->eol = true;
+		dev_err(vibra->dev, "Vibra eol detected. Disabling vibra!\n");
+	}
+
+	return ret;
+}
+
+/**
+ * ab5500_vibra_work() - Vibrator work, turns on/off vibrator
+ * @work: Pointer to work structure
+ *
+ * This function is called from workqueue, turns on/off vibrator
+ **/
+static void ab5500_vibra_work(struct work_struct *work)
+{
+	struct ab5500_vibra *vibra = container_of(work,
+			struct ab5500_vibra, vibra_work);
+	unsigned long flags;
+	int ret;
+
+	ret = ab5500_vibra_start(vibra);
+	if (ret < 0)
+		dev_err(vibra->dev, "reg[%d] w failed: %d\n",
+				AB5500_VIB_CTRL, ret);
+
+	wait_event_interruptible_timeout(vibra->vibra_wait,
+			0, msecs_to_jiffies(vibra->timeout_ms));
+
+	ret = ab5500_vibra_stop(vibra);
+	if (ret < 0)
+		dev_err(vibra->dev, "reg[%d] w failed: %d\n",
+				AB5500_VIB_CTRL, ret);
+
+	spin_lock_irqsave(&vibra->vibra_lock, flags);
+
+	vibra->timeout_start = 0;
+	vibra->enable = false;
+
+	spin_unlock_irqrestore(&vibra->vibra_lock, flags);
+}
+
+/**
+ * vibra_enable() - Enables vibrator
+ * @tdev:      Pointer to timed output device structure
+ * @timeout:	Time indicating how long vibrator will be enabled
+ *
+ * This function enables vibrator
+ **/
+static void vibra_enable(struct timed_output_dev *tdev, int timeout)
+{
+	struct ab5500_vibra *vibra = dev_get_drvdata(tdev->dev);
+	unsigned long flags;
+
+	spin_lock_irqsave(&vibra->vibra_lock, flags);
+
+	if ((!vibra->enable || timeout) && !vibra->eol) {
+		vibra->enable = true;
+
+		vibra->timeout_ms = timeout;
+		vibra->timeout_start = jiffies;
+		queue_work(vibra->vibra_workqueue, &vibra->vibra_work);
+	}
+
+	spin_unlock_irqrestore(&vibra->vibra_lock, flags);
+}
+
+/**
+ * vibra_get_time() - Returns remaining time to disabling vibration
+ * @tdev:      Pointer to timed output device structure
+ *
+ * This function returns time remaining to disabling vibration
+ *
+ * Returns:
+ *	Returns remaining time to disabling vibration
+ **/
+static int vibra_get_time(struct timed_output_dev *tdev)
+{
+	struct ab5500_vibra *vibra = dev_get_drvdata(tdev->dev);
+	unsigned int ms;
+	unsigned long flags;
+
+	spin_lock_irqsave(&vibra->vibra_lock, flags);
+
+	if (vibra->enable)
+		ms = jiffies_to_msecs(vibra->timeout_start +
+				msecs_to_jiffies(vibra->timeout_ms) - jiffies);
+	else
+		ms = 0;
+
+	spin_unlock_irqrestore(&vibra->vibra_lock, flags);
+
+	return ms;
+}
+
+static int ab5500_vibra_reg_init(struct ab5500_vibra *vibra)
+{
+	int ret = 0;
+	u8 ctrl = 0;
+	u8 pulse = 0;
+
+	ctrl = (AB5500_VIB_DUTY_50 << AB5500_VIB_DUTY_SHIFT) |
+		(AB5500_VIB_FREQ_8HZ << AB5500_VIB_FREQ_SHIFT);
+
+	if (vibra->pdata->type == AB5500_VIB_LINEAR) {
+		ctrl |= AB5500_VIB_FUND_EN;
+
+		if (vibra->pdata->voltage > AB5500_VIB_VOLT_MAX)
+			vibra->pdata->voltage = AB5500_VIB_VOLT_MAX;
+
+		pulse = (vibra->pdata->pulse << AB5500_VIB_PULSE_SHIFT) |
+			(vibra->pdata->voltage << AB5500_VIB_VOLT_SHIFT);
+		ret = abx500_set_register_interruptible(vibra->dev,
+				AB5500_BANK_VIBRA, AB5500_VIB_VOLT,
+				pulse);
+		if (ret < 0) {
+			dev_err(vibra->dev,
+				"reg[%#x] w %#x failed: %d\n",
+				AB5500_VIB_VOLT, vibra->pdata->voltage, ret);
+			return ret;
+		}
+
+		ret = abx500_set_register_interruptible(vibra->dev,
+				AB5500_BANK_VIBRA, AB5500_VIB_FUND_FREQ,
+				vibra->pdata->res_freq);
+		if (ret < 0) {
+			dev_err(vibra->dev, "reg[%#x] w %#x failed: %d\n",
+					AB5500_VIB_FUND_FREQ,
+					vibra->pdata->res_freq, ret);
+			return ret;
+		}
+
+		ret = abx500_set_register_interruptible(vibra->dev,
+				AB5500_BANK_VIBRA, AB5500_VIB_FUND_DUTY,
+				AB5500_VIB_RDUTY_50);
+		if (ret < 0) {
+			dev_err(vibra->dev, "reg[%#x] w %#x failed: %d\n",
+					AB5500_VIB_FUND_DUTY,
+					AB5500_VIB_RDUTY_50, ret);
+			return ret;
+		}
+	}
+
+	ret = abx500_set_register_interruptible(vibra->dev,
+			AB5500_BANK_VIBRA, AB5500_VIB_CTRL, ctrl);
+	if (ret < 0) {
+		dev_err(vibra->dev, "reg[%#x] w %#x failed: %d\n",
+				AB5500_VIB_CTRL, ctrl, ret);
+		return ret;
+	}
+
+	return ret;
+}
+
+static int ab5500_vibra_register_dev(struct ab5500_vibra *vibra,
+		struct platform_device *pdev)
+{
+	int ret = 0;
+
+	ret = timed_output_dev_register(&vibra->tdev);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register timed output device\n");
+		goto err_out;
+	}
+
+	dev_set_drvdata(vibra->tdev.dev, vibra);
+
+
+	/* Create workqueue just for timed output vibrator */
+	vibra->vibra_workqueue =
+		create_singlethread_workqueue("ste-timed-output-vibra");
+	if (!vibra->vibra_workqueue) {
+		dev_err(&pdev->dev, "failed to allocate workqueue\n");
+		ret = -ENOMEM;
+		goto exit_output_unregister;
+	}
+
+	init_waitqueue_head(&vibra->vibra_wait);
+	INIT_WORK(&vibra->vibra_work, ab5500_vibra_work);
+	spin_lock_init(&vibra->vibra_lock);
+
+	platform_set_drvdata(pdev, vibra);
+
+	return ret;
+
+exit_output_unregister:
+	timed_output_dev_unregister(&vibra->tdev);
+err_out:
+	return ret;
+}
+
+static int __devinit ab5500_vibra_probe(struct platform_device *pdev)
+{
+	struct ab5500_vibra_platform_data *pdata = pdev->dev.platform_data;
+	struct ab5500_vibra *vibra = NULL;
+	int ret = 0;
+
+	if (pdata == NULL) {
+		dev_err(&pdev->dev, "platform data required. Quitting...\n");
+		return -ENODEV;
+	}
+
+	vibra = kzalloc(sizeof(struct ab5500_vibra), GFP_KERNEL);
+	if (vibra == NULL)
+		return -ENOMEM;
+
+	vibra->tdev.name = "vibrator";
+	vibra->tdev.enable = vibra_enable;
+	vibra->tdev.get_time = vibra_get_time;
+	vibra->timeout_start = 0;
+	vibra->enable = false;
+	vibra->magnitude = pdata->magnitude;
+	vibra->pdata = pdata;
+	vibra->dev = &pdev->dev;
+
+	if (vibra->pdata->eol_voltage) {
+		vibra->gpadc = ab5500_gpadc_get("ab5500-adc.0");
+		if (IS_ERR(vibra->gpadc))
+			goto err_alloc;
+	}
+
+	if (vibra->pdata->type == AB5500_VIB_LINEAR)
+		dev_info(&pdev->dev, "Linear Type Vibrators\n");
+	else
+		dev_info(&pdev->dev, "Rotary Type Vibrators\n");
+
+	ret = ab5500_vibra_reg_init(vibra);
+	if (ret < 0)
+		goto err_alloc;
+
+	ret = ab5500_vibra_register_dev(vibra, pdev);
+	if (ret < 0)
+		goto err_alloc;
+
+	/* Perform vibra eol diagnostics if eol_voltage is set */
+	if (vibra->pdata->eol_voltage) {
+		ret = ab5500_vibra_eol_check(vibra);
+		if (ret < 0)
+			dev_warn(&pdev->dev, "EOL check failed\n");
+	}
+
+	dev_info(&pdev->dev, "initialization success\n");
+
+	return ret;
+
+err_alloc:
+	kfree(vibra);
+
+	return ret;
+}
+
+static int __devexit ab5500_vibra_remove(struct platform_device *pdev)
+{
+	struct ab5500_vibra *vibra = platform_get_drvdata(pdev);
+
+	timed_output_dev_unregister(&vibra->tdev);
+	destroy_workqueue(vibra->vibra_workqueue);
+	kfree(vibra);
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static struct platform_driver ab5500_vibra_driver = {
+	.probe		= ab5500_vibra_probe,
+	.remove		= __devexit_p(ab5500_vibra_remove),
+	.driver		= {
+		.name	= AB5500_VIBRA_DRV_NAME,
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init ab5500_vibra_module_init(void)
+{
+	return platform_driver_register(&ab5500_vibra_driver);
+}
+
+static void __exit ab5500_vibra_module_exit(void)
+{
+	platform_driver_unregister(&ab5500_vibra_driver);
+}
+
+module_init(ab5500_vibra_module_init);
+module_exit(ab5500_vibra_module_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>");
+MODULE_DESCRIPTION("Timed Output Driver for AB5500 Vibrator");
+
diff --git a/include/linux/ab5500-vibra.h b/include/linux/ab5500-vibra.h
new file mode 100644
index 00000000000..e85048dd801
--- /dev/null
+++ b/include/linux/ab5500-vibra.h
@@ -0,0 +1,57 @@
+/*----------------------------------------------------------------------------
+ * ab5500-vibra.h header file for ab5500 vibrator driver
+ *
+ * Copyright (C) 2011 ST-Ericsson SA.
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * Author: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
+ *
+ */
+
+#ifndef __AB5500_VIBRA_H__
+#define __AB5500_VIBRA_H__
+
+enum ab5500_vibra_type {
+	AB5500_VIB_ROTARY,
+	AB5500_VIB_LINEAR,
+};
+
+/* Vibrator Voltage */
+#define AB5500_VIB_VOLT_MIN	(0x00)	/* 1.3 Volt */
+#define AB5500_VIB_VOLT_MAX	(0x0A)	/* 3.5 Volt */
+#define AB5500_VIB_VOLT_STEP	(0x01)	/* 0.2 Volt */
+
+
+/* Linear Vibrator Resonance Frequncy */
+#define AB5500_VIB_RFREQ_100HZ	(0xFB)
+#define AB5500_VIB_RFREQ_150HZ	(0x52)
+#define AB5500_VIB_RFREQ_196HZ	(0x03)
+
+/* Vibrator pulse duration in milliseconds */
+enum ab5500_vibra_pulse {
+	AB5500_VIB_PULSE_OFF,
+	AB5500_VIB_PULSE_20ms,
+	AB5500_VIB_PULSE_75ms,
+	AB5500_VIB_PULSE_130ms,
+	AB5500_VIB_PULSE_170ms,
+};
+
+/**
+ * struct ab5500_vibra_platform_data
+ * @voltage:	Vibra output voltage
+ * @res_freq:	Linear vibra resonance freq.
+ * @type:	Vibra HW type
+ * @pulse:	Vibra pulse duration in ms
+ * @eol_voltage: EOL voltage in mV
+ */
+struct ab5500_vibra_platform_data {
+	u8 voltage;
+	u8 res_freq;
+	u8 magnitude;
+	enum ab5500_vibra_type type;
+	enum ab5500_vibra_pulse pulse;
+	int eol_voltage;
+};
+
+#endif /* __AB5500_VIBRA_H__ */
diff --git a/include/linux/mfd/abx500/ab5500-gpadc.h b/include/linux/mfd/abx500/ab5500-gpadc.h
index 67dc3cc9034..8bddafc7f79 100644
--- a/include/linux/mfd/abx500/ab5500-gpadc.h
+++ b/include/linux/mfd/abx500/ab5500-gpadc.h
@@ -34,6 +34,7 @@
 /* VBAT with TX off only min trigger */
 #define MAIN_BAT_V_TRIG_MIN		14
 #define GPADC0_V		15
+#define VIBRA_KELVIN		16
 
 /*
  * Frequency of auto adc conversion