Merge tag 'for-v3.10' of git://git.infradead.org/battery-2.6

Pull battery updates from Anton Vorontsov:
 "Highlights:

   - OpenFirmware/DeviceTree support for the Power Supply core: the core
     now automatically populates supplied_from hierarchy from the device
     tree.  With these patches chargers and batteries can now lookup
     each other without the board files support shim.  Rhyland Klein at
     NVIDIA did the work

   - New ST-Ericsson ABX500 hwmon driver.  The driver is heavily using
     the AB85xx core and depends on some recent changes to it, so that
     is why the driver comes through the battery tree.  It has an
     appropriate ack from the hwmon maintainer (i.e.  Guenter Roeck).
     Martin Persson at ST-Ericsson and Hongbo Zhang at Linaro authored
     the driver

   - Final bits to sync AB85xx ST-Ericsson changes into mainline.  The
     changes touch mfd parts, but these were acked by the appropriate
     MFD maintainer (ie Samuel Ortiz).  Lee Jones at Linaro did most of
     the work and lead the submission process.

  Minor changes, but still worth mentioning:

   - Battery temperature reporting fix for Nokia N900 phones
   - Versatile Express poweroff driver moved into drivers/power/reset/
   - Tree-wide: use devm_kzalloc() where appropriate
   - Tree-wide: dev_pm_ops cleanups/fixes"

* tag 'for-v3.10' of git://git.infradead.org/battery-2.6: (112 commits)
  pm2301-charger: Fix suspend/resume
  charger-manager: Use kmemdup instead of kzalloc + memcpy
  power_supply: Populate supplied_from hierarchy from the device tree
  power_supply: Add core support for supplied_from
  power_supply: Define Binding for power-supplies
  rx51_battery: Fix reporting temperature
  hwmon: Add ST-Ericsson ABX500 hwmon driver
  ab8500_bmdata: Export abx500_res_to_temp tables for hwmon
  ab8500_{bmdata,fg}: Add const attributes to some data arrays
  ab8500_bmdata: Eliminate CamelCase warning of some variables
  ab8500_btemp: Make ab8500_btemp_get* interfaces public
  goldfish_battery: Use resource_size()
  lp8788-charger: Use PAGE_SIZE for the sysfs read operation
  max8925_power: Use devm_kzalloc()
  da9030_battery: Use devm_kzalloc()
  da9052-battery: Use devm_kzalloc()
  ds2760_battery: Use devm_kzalloc()
  ds2780_battery: Use devm_kzalloc()
  gpio-charger: Use devm_kzalloc()
  isp1704_charger: Use devm_kzalloc()
  ...

46 files changed, 5849 insertions, 1053 deletions

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index f61d98a62967..9c333d471433 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -39,6 +39,19 @@ config HWMON_DEBUG_CHIP
 
 comment "Native drivers"
 
+config SENSORS_AB8500
+	tristate "AB8500 thermal monitoring"
+	depends on AB8500_GPADC && AB8500_BM
+	default n
+	help
+	  If you say yes here you get support for the thermal sensor part
+	  of the AB8500 chip. The driver includes thermal management for
+	  AB8500 die and two GPADC channels. The GPADC channel are preferably
+	  used to access sensors outside the AB8500 chip.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called abx500-temp.
+
 config SENSORS_ABITUGURU
 	tristate "Abit uGuru (rev 1 & 2)"
 	depends on X86 && DMI
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index c51b0dc35dc8..d17d3e64f9f4 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_SENSORS_W83795)	+= w83795.o
 obj-$(CONFIG_SENSORS_W83781D)	+= w83781d.o
 obj-$(CONFIG_SENSORS_W83791D)	+= w83791d.o
 
+obj-$(CONFIG_SENSORS_AB8500)	+= abx500.o ab8500.o
 obj-$(CONFIG_SENSORS_ABITUGURU)	+= abituguru.o
 obj-$(CONFIG_SENSORS_ABITUGURU3)+= abituguru3.o
 obj-$(CONFIG_SENSORS_AD7314)	+= ad7314.o
diff --git a/drivers/hwmon/ab8500.c b/drivers/hwmon/ab8500.c
new file mode 100644
index 000000000000..d844dc806853
--- /dev/null
+++ b/drivers/hwmon/ab8500.c
@@ -0,0 +1,206 @@
+/*
+ * Copyright (C) ST-Ericsson 2010 - 2013
+ * Author: Martin Persson <martin.persson@stericsson.com>
+ *         Hongbo Zhang <hongbo.zhang@linaro.org>
+ * License Terms: GNU General Public License v2
+ *
+ * When the AB8500 thermal warning temperature is reached (threshold cannot
+ * be changed by SW), an interrupt is set, and if no further action is taken
+ * within a certain time frame, pm_power off will be called.
+ *
+ * When AB8500 thermal shutdown temperature is reached a hardware shutdown of
+ * the AB8500 will occur.
+ */
+
+#include <linux/err.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/mfd/abx500.h>
+#include <linux/mfd/abx500/ab8500-bm.h>
+#include <linux/mfd/abx500/ab8500-gpadc.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/power/ab8500.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include "abx500.h"
+
+#define DEFAULT_POWER_OFF_DELAY	(HZ * 10)
+#define THERMAL_VCC		1800
+#define PULL_UP_RESISTOR	47000
+/* Number of monitored sensors should not greater than NUM_SENSORS */
+#define NUM_MONITORED_SENSORS	4
+
+struct ab8500_gpadc_cfg {
+	const struct abx500_res_to_temp *temp_tbl;
+	int tbl_sz;
+	int vcc;
+	int r_up;
+};
+
+struct ab8500_temp {
+	struct ab8500_gpadc *gpadc;
+	struct ab8500_btemp *btemp;
+	struct delayed_work power_off_work;
+	struct ab8500_gpadc_cfg cfg;
+	struct abx500_temp *abx500_data;
+};
+
+/*
+ * The hardware connection is like this:
+ * VCC----[ R_up ]-----[ NTC ]----GND
+ * where R_up is pull-up resistance, and GPADC measures voltage on NTC.
+ * and res_to_temp table is strictly sorted by falling resistance values.
+ */
+static int ab8500_voltage_to_temp(struct ab8500_gpadc_cfg *cfg,
+		int v_ntc, int *temp)
+{
+	int r_ntc, i = 0, tbl_sz = cfg->tbl_sz;
+	const struct abx500_res_to_temp *tbl = cfg->temp_tbl;
+
+	if (cfg->vcc < 0 || v_ntc >= cfg->vcc)
+		return -EINVAL;
+
+	r_ntc = v_ntc * cfg->r_up / (cfg->vcc - v_ntc);
+	if (r_ntc > tbl[0].resist || r_ntc < tbl[tbl_sz - 1].resist)
+		return -EINVAL;
+
+	while (!(r_ntc <= tbl[i].resist && r_ntc > tbl[i + 1].resist) &&
+			i < tbl_sz - 2)
+		i++;
+
+	/* return milli-Celsius */
+	*temp = tbl[i].temp * 1000 + ((tbl[i + 1].temp - tbl[i].temp) * 1000 *
+		(r_ntc - tbl[i].resist)) / (tbl[i + 1].resist - tbl[i].resist);
+
+	return 0;
+}
+
+static int ab8500_read_sensor(struct abx500_temp *data, u8 sensor, int *temp)
+{
+	int voltage, ret;
+	struct ab8500_temp *ab8500_data = data->plat_data;
+
+	if (sensor == BAT_CTRL) {
+		*temp = ab8500_btemp_get_batctrl_temp(ab8500_data->btemp);
+	} else if (sensor == BTEMP_BALL) {
+		*temp = ab8500_btemp_get_temp(ab8500_data->btemp);
+	} else {
+		voltage = ab8500_gpadc_convert(ab8500_data->gpadc, sensor);
+		if (voltage < 0)
+			return voltage;
+
+		ret = ab8500_voltage_to_temp(&ab8500_data->cfg, voltage, temp);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static void ab8500_thermal_power_off(struct work_struct *work)
+{
+	struct ab8500_temp *ab8500_data = container_of(work,
+				struct ab8500_temp, power_off_work.work);
+	struct abx500_temp *abx500_data = ab8500_data->abx500_data;
+
+	dev_warn(&abx500_data->pdev->dev, "Power off due to critical temp\n");
+
+	pm_power_off();
+}
+
+static ssize_t ab8500_show_name(struct device *dev,
+		struct device_attribute *devattr, char *buf)
+{
+	return sprintf(buf, "ab8500\n");
+}
+
+static ssize_t ab8500_show_label(struct device *dev,
+		struct device_attribute *devattr, char *buf)
+{
+	char *label;
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	int index = attr->index;
+
+	switch (index) {
+	case 1:
+		label = "ext_adc1";
+		break;
+	case 2:
+		label = "ext_adc2";
+		break;
+	case 3:
+		label = "bat_temp";
+		break;
+	case 4:
+		label = "bat_ctrl";
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return sprintf(buf, "%s\n", label);
+}
+
+static int ab8500_temp_irq_handler(int irq, struct abx500_temp *data)
+{
+	struct ab8500_temp *ab8500_data = data->plat_data;
+
+	dev_warn(&data->pdev->dev, "Power off in %d s\n",
+		 DEFAULT_POWER_OFF_DELAY / HZ);
+
+	schedule_delayed_work(&ab8500_data->power_off_work,
+		DEFAULT_POWER_OFF_DELAY);
+	return 0;
+}
+
+int abx500_hwmon_init(struct abx500_temp *data)
+{
+	struct ab8500_temp *ab8500_data;
+
+	ab8500_data = devm_kzalloc(&data->pdev->dev, sizeof(*ab8500_data),
+		GFP_KERNEL);
+	if (!ab8500_data)
+		return -ENOMEM;
+
+	ab8500_data->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+	if (IS_ERR(ab8500_data->gpadc))
+		return PTR_ERR(ab8500_data->gpadc);
+
+	ab8500_data->btemp = ab8500_btemp_get();
+	if (IS_ERR(ab8500_data->btemp))
+		return PTR_ERR(ab8500_data->btemp);
+
+	INIT_DELAYED_WORK(&ab8500_data->power_off_work,
+			  ab8500_thermal_power_off);
+
+	ab8500_data->cfg.vcc = THERMAL_VCC;
+	ab8500_data->cfg.r_up = PULL_UP_RESISTOR;
+	ab8500_data->cfg.temp_tbl = ab8500_temp_tbl_a_thermistor;
+	ab8500_data->cfg.tbl_sz = ab8500_temp_tbl_a_size;
+
+	data->plat_data = ab8500_data;
+
+	/*
+	 * ADC_AUX1 and ADC_AUX2, connected to external NTC
+	 * BTEMP_BALL and BAT_CTRL, fixed usage
+	 */
+	data->gpadc_addr[0] = ADC_AUX1;
+	data->gpadc_addr[1] = ADC_AUX2;
+	data->gpadc_addr[2] = BTEMP_BALL;
+	data->gpadc_addr[3] = BAT_CTRL;
+	data->monitored_sensors = NUM_MONITORED_SENSORS;
+
+	data->ops.read_sensor = ab8500_read_sensor;
+	data->ops.irq_handler = ab8500_temp_irq_handler;
+	data->ops.show_name = ab8500_show_name;
+	data->ops.show_label = ab8500_show_label;
+	data->ops.is_visible = NULL;
+
+	return 0;
+}
+EXPORT_SYMBOL(abx500_hwmon_init);
+
+MODULE_AUTHOR("Hongbo Zhang <hongbo.zhang@linaro.org>");
+MODULE_DESCRIPTION("AB8500 temperature driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/abx500.c b/drivers/hwmon/abx500.c
new file mode 100644
index 000000000000..b4ad87b31a37
--- /dev/null
+++ b/drivers/hwmon/abx500.c
@@ -0,0 +1,491 @@
+/*
+ * Copyright (C) ST-Ericsson 2010 - 2013
+ * Author: Martin Persson <martin.persson@stericsson.com>
+ *         Hongbo Zhang <hongbo.zhang@linaro.org>
+ * License Terms: GNU General Public License v2
+ *
+ * ABX500 does not provide auto ADC, so to monitor the required temperatures,
+ * a periodic work is used. It is more important to not wake up the CPU than
+ * to perform this job, hence the use of a deferred delay.
+ *
+ * A deferred delay for thermal monitor is considered safe because:
+ * If the chip gets too hot during a sleep state it's most likely due to
+ * external factors, such as the surrounding temperature. I.e. no SW decisions
+ * will make any difference.
+ */
+
+#include <linux/err.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/interrupt.h>
+#include <linux/jiffies.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/workqueue.h>
+#include "abx500.h"
+
+#define DEFAULT_MONITOR_DELAY	HZ
+#define DEFAULT_MAX_TEMP	130
+
+static inline void schedule_monitor(struct abx500_temp *data)
+{
+	data->work_active = true;
+	schedule_delayed_work(&data->work, DEFAULT_MONITOR_DELAY);
+}
+
+static void threshold_updated(struct abx500_temp *data)
+{
+	int i;
+	for (i = 0; i < data->monitored_sensors; i++)
+		if (data->max[i] != 0 || data->min[i] != 0) {
+			schedule_monitor(data);
+			return;
+		}
+
+	dev_dbg(&data->pdev->dev, "No active thresholds.\n");
+	cancel_delayed_work_sync(&data->work);
+	data->work_active = false;
+}
+
+static void gpadc_monitor(struct work_struct *work)
+{
+	int temp, i, ret;
+	char alarm_node[30];
+	bool updated_min_alarm, updated_max_alarm;
+	struct abx500_temp *data;
+
+	data = container_of(work, struct abx500_temp, work.work);
+	mutex_lock(&data->lock);
+
+	for (i = 0; i < data->monitored_sensors; i++) {
+		/* Thresholds are considered inactive if set to 0 */
+		if (data->max[i] == 0 && data->min[i] == 0)
+			continue;
+
+		if (data->max[i] < data->min[i])
+			continue;
+
+		ret = data->ops.read_sensor(data, data->gpadc_addr[i], &temp);
+		if (ret < 0) {
+			dev_err(&data->pdev->dev, "GPADC read failed\n");
+			continue;
+		}
+
+		updated_min_alarm = false;
+		updated_max_alarm = false;
+
+		if (data->min[i] != 0) {
+			if (temp < data->min[i]) {
+				if (data->min_alarm[i] == false) {
+					data->min_alarm[i] = true;
+					updated_min_alarm = true;
+				}
+			} else {
+				if (data->min_alarm[i] == true) {
+					data->min_alarm[i] = false;
+					updated_min_alarm = true;
+				}
+			}
+		}
+		if (data->max[i] != 0) {
+			if (temp > data->max[i]) {
+				if (data->max_alarm[i] == false) {
+					data->max_alarm[i] = true;
+					updated_max_alarm = true;
+				}
+			} else if (temp < data->max[i] - data->max_hyst[i]) {
+				if (data->max_alarm[i] == true) {
+					data->max_alarm[i] = false;
+					updated_max_alarm = true;
+				}
+			}
+		}
+
+		if (updated_min_alarm) {
+			ret = sprintf(alarm_node, "temp%d_min_alarm", i + 1);
+			sysfs_notify(&data->pdev->dev.kobj, NULL, alarm_node);
+		}
+		if (updated_max_alarm) {
+			ret = sprintf(alarm_node, "temp%d_max_alarm", i + 1);
+			sysfs_notify(&data->pdev->dev.kobj, NULL, alarm_node);
+		}
+	}
+
+	schedule_monitor(data);
+	mutex_unlock(&data->lock);
+}
+
+/* HWMON sysfs interfaces */
+static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
+			 char *buf)
+{
+	struct abx500_temp *data = dev_get_drvdata(dev);
+	/* Show chip name */
+	return data->ops.show_name(dev, devattr, buf);
+}
+
+static ssize_t show_label(struct device *dev,
+			  struct device_attribute *devattr, char *buf)
+{
+	struct abx500_temp *data = dev_get_drvdata(dev);
+	/* Show each sensor label */
+	return data->ops.show_label(dev, devattr, buf);
+}
+
+static ssize_t show_input(struct device *dev,
+			  struct device_attribute *devattr, char *buf)
+{
+	int ret, temp;
+	struct abx500_temp *data = dev_get_drvdata(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	u8 gpadc_addr = data->gpadc_addr[attr->index];
+
+	ret = data->ops.read_sensor(data, gpadc_addr, &temp);
+	if (ret < 0)
+		return ret;
+
+	return sprintf(buf, "%d\n", temp);
+}
+
+/* Set functions (RW nodes) */
+static ssize_t set_min(struct device *dev, struct device_attribute *devattr,
+		       const char *buf, size_t count)
+{
+	unsigned long val;
+	struct abx500_temp *data = dev_get_drvdata(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	int res = kstrtol(buf, 10, &val);
+	if (res < 0)
+		return res;
+
+	val = clamp_val(val, 0, DEFAULT_MAX_TEMP);
+
+	mutex_lock(&data->lock);
+	data->min[attr->index] = val;
+	threshold_updated(data);
+	mutex_unlock(&data->lock);
+
+	return count;
+}
+
+static ssize_t set_max(struct device *dev, struct device_attribute *devattr,
+		       const char *buf, size_t count)
+{
+	unsigned long val;
+	struct abx500_temp *data = dev_get_drvdata(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	int res = kstrtol(buf, 10, &val);
+	if (res < 0)
+		return res;
+
+	val = clamp_val(val, 0, DEFAULT_MAX_TEMP);
+
+	mutex_lock(&data->lock);
+	data->max[attr->index] = val;
+	threshold_updated(data);
+	mutex_unlock(&data->lock);
+
+	return count;
+}
+
+static ssize_t set_max_hyst(struct device *dev,
+			    struct device_attribute *devattr,
+			    const char *buf, size_t count)
+{
+	unsigned long val;
+	struct abx500_temp *data = dev_get_drvdata(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	int res = kstrtoul(buf, 10, &val);
+	if (res < 0)
+		return res;
+
+	val = clamp_val(val, 0, DEFAULT_MAX_TEMP);
+
+	mutex_lock(&data->lock);
+	data->max_hyst[attr->index] = val;
+	threshold_updated(data);
+	mutex_unlock(&data->lock);
+
+	return count;
+}
+
+/* Show functions (RO nodes) */
+static ssize_t show_min(struct device *dev,
+			struct device_attribute *devattr, char *buf)
+{
+	struct abx500_temp *data = dev_get_drvdata(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+
+	return sprintf(buf, "%ld\n", data->min[attr->index]);
+}
+
+static ssize_t show_max(struct device *dev,
+			struct device_attribute *devattr, char *buf)
+{
+	struct abx500_temp *data = dev_get_drvdata(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+
+	return sprintf(buf, "%ld\n", data->max[attr->index]);
+}
+
+static ssize_t show_max_hyst(struct device *dev,
+			     struct device_attribute *devattr, char *buf)
+{
+	struct abx500_temp *data = dev_get_drvdata(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+
+	return sprintf(buf, "%ld\n", data->max_hyst[attr->index]);
+}
+
+static ssize_t show_min_alarm(struct device *dev,
+			      struct device_attribute *devattr, char *buf)
+{
+	struct abx500_temp *data = dev_get_drvdata(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+
+	return sprintf(buf, "%d\n", data->min_alarm[attr->index]);
+}
+
+static ssize_t show_max_alarm(struct device *dev,
+			      struct device_attribute *devattr, char *buf)
+{
+	struct abx500_temp *data = dev_get_drvdata(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+
+	return sprintf(buf, "%d\n", data->max_alarm[attr->index]);
+}
+
+static mode_t abx500_attrs_visible(struct kobject *kobj,
+				   struct attribute *attr, int n)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct abx500_temp *data = dev_get_drvdata(dev);
+
+	if (data->ops.is_visible)
+		return data->ops.is_visible(attr, n);
+
+	return attr->mode;
+}
+
+/* Chip name, required by hwmon */
+static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
+
+/* GPADC - SENSOR1 */
+static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, show_label, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_input, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_min, set_min, 0);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_max, set_max, 0);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
+			  show_max_hyst, set_max_hyst, 0);
+static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_min_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_max_alarm, NULL, 0);
+
+/* GPADC - SENSOR2 */
+static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, show_label, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_input, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_min, set_min, 1);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_max, set_max, 1);
+static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IWUSR | S_IRUGO,
+			  show_max_hyst, set_max_hyst, 1);
+static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_min_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_max_alarm, NULL, 1);
+
+/* GPADC - SENSOR3 */
+static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, show_label, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_input, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_min, set_min, 2);
+static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_max, set_max, 2);
+static SENSOR_DEVICE_ATTR(temp3_max_hyst, S_IWUSR | S_IRUGO,
+			  show_max_hyst, set_max_hyst, 2);
+static SENSOR_DEVICE_ATTR(temp3_min_alarm, S_IRUGO, show_min_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp3_max_alarm, S_IRUGO, show_max_alarm, NULL, 2);
+
+/* GPADC - SENSOR4 */
+static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, show_label, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_input, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_min, set_min, 3);
+static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_max, set_max, 3);
+static SENSOR_DEVICE_ATTR(temp4_max_hyst, S_IWUSR | S_IRUGO,
+			  show_max_hyst, set_max_hyst, 3);
+static SENSOR_DEVICE_ATTR(temp4_min_alarm, S_IRUGO, show_min_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp4_max_alarm, S_IRUGO, show_max_alarm, NULL, 3);
+
+struct attribute *abx500_temp_attributes[] = {
+	&sensor_dev_attr_name.dev_attr.attr,
+
+	&sensor_dev_attr_temp1_label.dev_attr.attr,
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_min.dev_attr.attr,
+	&sensor_dev_attr_temp1_max.dev_attr.attr,
+	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
+
+	&sensor_dev_attr_temp2_label.dev_attr.attr,
+	&sensor_dev_attr_temp2_input.dev_attr.attr,
+	&sensor_dev_attr_temp2_min.dev_attr.attr,
+	&sensor_dev_attr_temp2_max.dev_attr.attr,
+	&sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
+
+	&sensor_dev_attr_temp3_label.dev_attr.attr,
+	&sensor_dev_attr_temp3_input.dev_attr.attr,
+	&sensor_dev_attr_temp3_min.dev_attr.attr,
+	&sensor_dev_attr_temp3_max.dev_attr.attr,
+	&sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
+
+	&sensor_dev_attr_temp4_label.dev_attr.attr,
+	&sensor_dev_attr_temp4_input.dev_attr.attr,
+	&sensor_dev_attr_temp4_min.dev_attr.attr,
+	&sensor_dev_attr_temp4_max.dev_attr.attr,
+	&sensor_dev_attr_temp4_max_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp4_min_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp4_max_alarm.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group abx500_temp_group = {
+	.attrs = abx500_temp_attributes,
+	.is_visible = abx500_attrs_visible,
+};
+
+static irqreturn_t abx500_temp_irq_handler(int irq, void *irq_data)
+{
+	struct platform_device *pdev = irq_data;
+	struct abx500_temp *data = platform_get_drvdata(pdev);
+
+	data->ops.irq_handler(irq, data);
+	return IRQ_HANDLED;
+}
+
+static int setup_irqs(struct platform_device *pdev)
+{
+	int ret;
+	int irq = platform_get_irq_byname(pdev, "ABX500_TEMP_WARM");
+
+	if (irq < 0) {
+		dev_err(&pdev->dev, "Get irq by name failed\n");
+		return irq;
+	}
+
+	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+		abx500_temp_irq_handler, IRQF_NO_SUSPEND, "abx500-temp", pdev);
+	if (ret < 0)
+		dev_err(&pdev->dev, "Request threaded irq failed (%d)\n", ret);
+
+	return ret;
+}
+
+static int abx500_temp_probe(struct platform_device *pdev)
+{
+	struct abx500_temp *data;
+	int err;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->pdev = pdev;
+	mutex_init(&data->lock);
+
+	/* Chip specific initialization */
+	err = abx500_hwmon_init(data);
+	if (err	< 0 || !data->ops.read_sensor || !data->ops.show_name ||
+			!data->ops.show_label)
+		return err;
+
+	INIT_DEFERRABLE_WORK(&data->work, gpadc_monitor);
+
+	platform_set_drvdata(pdev, data);
+
+	err = sysfs_create_group(&pdev->dev.kobj, &abx500_temp_group);
+	if (err < 0) {
+		dev_err(&pdev->dev, "Create sysfs group failed (%d)\n", err);
+		return err;
+	}
+
+	data->hwmon_dev = hwmon_device_register(&pdev->dev);
+	if (IS_ERR(data->hwmon_dev)) {
+		err = PTR_ERR(data->hwmon_dev);
+		dev_err(&pdev->dev, "Class registration failed (%d)\n", err);
+		goto exit_sysfs_group;
+	}
+
+	if (data->ops.irq_handler) {
+		err = setup_irqs(pdev);
+		if (err < 0)
+			goto exit_hwmon_reg;
+	}
+	return 0;
+
+exit_hwmon_reg:
+	hwmon_device_unregister(data->hwmon_dev);
+exit_sysfs_group:
+	sysfs_remove_group(&pdev->dev.kobj, &abx500_temp_group);
+	return err;
+}
+
+static int abx500_temp_remove(struct platform_device *pdev)
+{
+	struct abx500_temp *data = platform_get_drvdata(pdev);
+
+	cancel_delayed_work_sync(&data->work);
+	hwmon_device_unregister(data->hwmon_dev);
+	sysfs_remove_group(&pdev->dev.kobj, &abx500_temp_group);
+
+	return 0;
+}
+
+static int abx500_temp_suspend(struct platform_device *pdev,
+			       pm_message_t state)
+{
+	struct abx500_temp *data = platform_get_drvdata(pdev);
+
+	if (data->work_active)
+		cancel_delayed_work_sync(&data->work);
+
+	return 0;
+}
+
+static int abx500_temp_resume(struct platform_device *pdev)
+{
+	struct abx500_temp *data = platform_get_drvdata(pdev);
+
+	if (data->work_active)
+		schedule_monitor(data);
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id abx500_temp_match[] = {
+	{ .compatible = "stericsson,abx500-temp" },
+	{},
+};
+#endif
+
+static struct platform_driver abx500_temp_driver = {
+	.driver = {
+		.owner = THIS_MODULE,
+		.name = "abx500-temp",
+		.of_match_table = of_match_ptr(abx500_temp_match),
+	},
+	.suspend = abx500_temp_suspend,
+	.resume = abx500_temp_resume,
+	.probe = abx500_temp_probe,
+	.remove = abx500_temp_remove,
+};
+
+module_platform_driver(abx500_temp_driver);
+
+MODULE_AUTHOR("Martin Persson <martin.persson@stericsson.com>");
+MODULE_DESCRIPTION("ABX500 temperature driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/abx500.h b/drivers/hwmon/abx500.h
new file mode 100644
index 000000000000..9b295e684d0e
--- /dev/null
+++ b/drivers/hwmon/abx500.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) ST-Ericsson 2010 - 2013
+ * License terms: GNU General Public License v2
+ * Author: Martin Persson <martin.persson@stericsson.com>
+ *         Hongbo Zhang <hongbo.zhang@linaro.com>
+ */
+
+#ifndef _ABX500_H
+#define _ABX500_H
+
+#define NUM_SENSORS 5
+
+struct abx500_temp;
+
+/*
+ * struct abx500_temp_ops - abx500 chip specific ops
+ * @read_sensor: reads gpadc output
+ * @irq_handler: irq handler
+ * @show_name: hwmon device name
+ * @show_label: hwmon attribute label
+ * @is_visible: is attribute visible
+ */
+struct abx500_temp_ops {
+	int (*read_sensor)(struct abx500_temp *, u8, int *);
+	int (*irq_handler)(int, struct abx500_temp *);
+	ssize_t (*show_name)(struct device *,
+			struct device_attribute *, char *);
+	ssize_t (*show_label) (struct device *,
+			struct device_attribute *, char *);
+	int (*is_visible)(struct attribute *, int);
+};
+
+/*
+ * struct abx500_temp - representation of temp mon device
+ * @pdev: platform device
+ * @hwmon_dev: hwmon device
+ * @ops: abx500 chip specific ops
+ * @gpadc_addr: gpadc channel address
+ * @min: sensor temperature min value
+ * @max: sensor temperature max value
+ * @max_hyst: sensor temperature hysteresis value for max limit
+ * @min_alarm: sensor temperature min alarm
+ * @max_alarm: sensor temperature max alarm
+ * @work: delayed work scheduled to monitor temperature periodically
+ * @work_active: True if work is active
+ * @lock: mutex
+ * @monitored_sensors: number of monitored sensors
+ * @plat_data: private usage, usually points to platform specific data
+ */
+struct abx500_temp {
+	struct platform_device *pdev;
+	struct device *hwmon_dev;
+	struct abx500_temp_ops ops;
+	u8 gpadc_addr[NUM_SENSORS];
+	unsigned long min[NUM_SENSORS];
+	unsigned long max[NUM_SENSORS];
+	unsigned long max_hyst[NUM_SENSORS];
+	bool min_alarm[NUM_SENSORS];
+	bool max_alarm[NUM_SENSORS];
+	struct delayed_work work;
+	bool work_active;
+	struct mutex lock;
+	int monitored_sensors;
+	void *plat_data;
+};
+
+int abx500_hwmon_init(struct abx500_temp *data);
+
+#endif /* _ABX500_H */
diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
index 7c84ced2e01b..f276352cc9ef 100644
--- a/drivers/mfd/ab8500-core.c
+++ b/drivers/mfd/ab8500-core.c
@@ -95,6 +95,7 @@
 #define AB8500_IT_MASK22_REG		0x55
 #define AB8500_IT_MASK23_REG		0x56
 #define AB8500_IT_MASK24_REG		0x57
+#define AB8500_IT_MASK25_REG		0x58
 
 /*
  * latch hierarchy registers
@@ -102,15 +103,25 @@
 #define AB8500_IT_LATCHHIER1_REG	0x60
 #define AB8500_IT_LATCHHIER2_REG	0x61
 #define AB8500_IT_LATCHHIER3_REG	0x62
+#define AB8540_IT_LATCHHIER4_REG	0x63
 
 #define AB8500_IT_LATCHHIER_NUM		3
+#define AB8540_IT_LATCHHIER_NUM		4
 
 #define AB8500_REV_REG			0x80
 #define AB8500_IC_NAME_REG		0x82
 #define AB8500_SWITCH_OFF_STATUS	0x00
 
 #define AB8500_TURN_ON_STATUS		0x00
+#define AB8505_TURN_ON_STATUS_2	0x04
 
+#define AB8500_CH_USBCH_STAT1_REG	0x02
+#define VBUS_DET_DBNC100		0x02
+#define VBUS_DET_DBNC1			0x01
+
+static DEFINE_SPINLOCK(on_stat_lock);
+static u8 turn_on_stat_mask = 0xFF;
+static u8 turn_on_stat_set;
 static bool no_bm; /* No battery management */
 module_param(no_bm, bool, S_IRUGO);
 
@@ -130,9 +141,15 @@ static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
 	0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
 };
 
-/* AB9540 support */
+/* AB9540 / AB8505 support */
 static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
-	0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24,
+	0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22, 23
+};
+
+/* AB8540 support */
+static const int ab8540_irq_regoffset[AB8540_NUM_IRQ_REGS] = {
+	0, 1, 2, 3, 4, -1, -1, -1, -1, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22, 23,
+	25, 26, 27, 28, 29, 30, 31,
 };
 
 static const char ab8500_version_str[][7] = {
@@ -352,6 +369,9 @@ static void ab8500_irq_sync_unlock(struct irq_data *data)
 			is_ab8500_1p1_or_earlier(ab8500))
 			continue;
 
+		if (ab8500->irq_reg_offset[i] < 0)
+			continue;
+
 		ab8500->oldmask[i] = new;
 
 		reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
@@ -423,6 +443,18 @@ static struct irq_chip ab8500_irq_chip = {
 	.irq_set_type		= ab8500_irq_set_type,
 };
 
+static void update_latch_offset(u8 *offset, int i)
+{
+	/* Fix inconsistent ITFromLatch25 bit mapping... */
+	if (unlikely(*offset == 17))
+			*offset = 24;
+	/* Fix inconsistent ab8540 bit mapping... */
+	if (unlikely(*offset == 16))
+			*offset = 25;
+	if ((i==3) && (*offset >= 24))
+			*offset += 2;
+}
+
 static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500,
 					int latch_offset, u8 latch_val)
 {
@@ -474,9 +506,7 @@ static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500,
 		latch_bit = __ffs(hier_val);
 		latch_offset = (hier_offset << 3) + latch_bit;
 
-		/* Fix inconsistent ITFromLatch25 bit mapping... */
-		if (unlikely(latch_offset == 17))
-			latch_offset = 24;
+		update_latch_offset(&latch_offset, hier_offset);
 
 		status = get_register_interruptible(ab8500,
 				AB8500_INTERRUPT,
@@ -504,7 +534,7 @@ static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
 	dev_vdbg(ab8500->dev, "interrupt\n");
 
 	/*  Hierarchical interrupt version */
-	for (i = 0; i < AB8500_IT_LATCHHIER_NUM; i++) {
+	for (i = 0; i < (ab8500->it_latchhier_num); i++) {
 		int status;
 		u8 hier_val;
 
@@ -520,63 +550,6 @@ static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev)
 	return IRQ_HANDLED;
 }
 
-/**
- * ab8500_irq_get_virq(): Map an interrupt on a chip to a virtual IRQ
- *
- * @ab8500: ab8500_irq controller to operate on.
- * @irq: index of the interrupt requested in the chip IRQs
- *
- * Useful for drivers to request their own IRQs.
- */
-static int ab8500_irq_get_virq(struct ab8500 *ab8500, int irq)
-{
-	if (!ab8500)
-		return -EINVAL;
-
-	return irq_create_mapping(ab8500->domain, irq);
-}
-
-static irqreturn_t ab8500_irq(int irq, void *dev)
-{
-	struct ab8500 *ab8500 = dev;
-	int i;
-
-	dev_vdbg(ab8500->dev, "interrupt\n");
-
-	atomic_inc(&ab8500->transfer_ongoing);
-
-	for (i = 0; i < ab8500->mask_size; i++) {
-		int regoffset = ab8500->irq_reg_offset[i];
-		int status;
-		u8 value;
-
-		/*
-		 * Interrupt register 12 doesn't exist prior to AB8500 version
-		 * 2.0
-		 */
-		if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500))
-			continue;
-
-		status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
-			AB8500_IT_LATCH1_REG + regoffset, &value);
-		if (status < 0 || value == 0)
-			continue;
-
-		do {
-			int bit = __ffs(value);
-			int line = i * 8 + bit;
-			int virq = ab8500_irq_get_virq(ab8500, line);
-
-			handle_nested_irq(virq);
-			ab8500_debug_register_interrupt(line);
-			value &= ~(1 << bit);
-
-		} while (value);
-	}
-	atomic_dec(&ab8500->transfer_ongoing);
-	return IRQ_HANDLED;
-}
-
 static int ab8500_irq_map(struct irq_domain *d, unsigned int virq,
 				irq_hw_number_t hwirq)
 {
@@ -607,7 +580,9 @@ static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
 {
 	int num_irqs;
 
-	if (is_ab9540(ab8500))
+	if (is_ab8540(ab8500))
+		num_irqs = AB8540_NR_IRQS;
+	else if (is_ab9540(ab8500))
 		num_irqs = AB9540_NR_IRQS;
 	else if (is_ab8505(ab8500))
 		num_irqs = AB8505_NR_IRQS;
@@ -650,6 +625,15 @@ static struct resource ab8500_gpadc_resources[] = {
 	},
 };
 
+static struct resource ab8505_gpadc_resources[] = {
+	{
+		.name	= "SW_CONV_END",
+		.start	= AB8500_INT_GP_SW_ADC_CONV_END,
+		.end	= AB8500_INT_GP_SW_ADC_CONV_END,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
 static struct resource ab8500_rtc_resources[] = {
 	{
 		.name	= "60S",
@@ -973,6 +957,30 @@ static struct resource ab8505_iddet_resources[] = {
 		.end   = AB8505_INT_KEYSTUCK,
 		.flags = IORESOURCE_IRQ,
 	},
+	{
+		.name = "VBUS_DET_R",
+		.start = AB8500_INT_VBUS_DET_R,
+		.end = AB8500_INT_VBUS_DET_R,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.name = "VBUS_DET_F",
+		.start = AB8500_INT_VBUS_DET_F,
+		.end = AB8500_INT_VBUS_DET_F,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.name = "ID_DET_PLUGR",
+		.start = AB8500_INT_ID_DET_PLUGR,
+		.end = AB8500_INT_ID_DET_PLUGR,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.name = "ID_DET_PLUGF",
+		.start = AB8500_INT_ID_DET_PLUGF,
+		.end = AB8500_INT_ID_DET_PLUGF,
+		.flags = IORESOURCE_IRQ,
+	},
 };
 
 static struct resource ab8500_temp_resources[] = {
@@ -984,7 +992,42 @@ static struct resource ab8500_temp_resources[] = {
 	},
 };
 
-static struct mfd_cell abx500_common_devs[] = {
+static struct mfd_cell ab8500_bm_devs[] = {
+	{
+		.name = "ab8500-charger",
+		.of_compatible = "stericsson,ab8500-charger",
+		.num_resources = ARRAY_SIZE(ab8500_charger_resources),
+		.resources = ab8500_charger_resources,
+		.platform_data = &ab8500_bm_data,
+		.pdata_size = sizeof(ab8500_bm_data),
+	},
+	{
+		.name = "ab8500-btemp",
+		.of_compatible = "stericsson,ab8500-btemp",
+		.num_resources = ARRAY_SIZE(ab8500_btemp_resources),
+		.resources = ab8500_btemp_resources,
+		.platform_data = &ab8500_bm_data,
+		.pdata_size = sizeof(ab8500_bm_data),
+	},
+	{
+		.name = "ab8500-fg",
+		.of_compatible = "stericsson,ab8500-fg",
+		.num_resources = ARRAY_SIZE(ab8500_fg_resources),
+		.resources = ab8500_fg_resources,
+		.platform_data = &ab8500_bm_data,
+		.pdata_size = sizeof(ab8500_bm_data),
+	},
+	{
+		.name = "ab8500-chargalg",
+		.of_compatible = "stericsson,ab8500-chargalg",
+		.num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
+		.resources = ab8500_chargalg_resources,
+		.platform_data = &ab8500_bm_data,
+		.pdata_size = sizeof(ab8500_bm_data),
+	},
+};
+
+static struct mfd_cell ab8500_devs[] = {
 #ifdef CONFIG_DEBUG_FS
 	{
 		.name = "ab8500-debug",
@@ -1007,7 +1050,6 @@ static struct mfd_cell abx500_common_devs[] = {
 	},
 	{
 		.name = "ab8500-gpadc",
-		.of_compatible = "stericsson,ab8500-gpadc",
 		.num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
 		.resources = ab8500_gpadc_resources,
 	},
@@ -1024,6 +1066,7 @@ static struct mfd_cell abx500_common_devs[] = {
 		.resources = ab8500_av_acc_detect_resources,
 	},
 	{
+
 		.name = "ab8500-poweron-key",
 		.of_compatible = "stericsson,ab8500-poweron-key",
 		.num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
@@ -1053,82 +1096,220 @@ static struct mfd_cell abx500_common_devs[] = {
 		.of_compatible = "stericsson,ab8500-denc",
 	},
 	{
+		.name = "ab8500-gpio",
+		.of_compatible = "stericsson,ab8500-gpio",
+	},
+	{
 		.name = "abx500-temp",
 		.of_compatible = "stericsson,abx500-temp",
 		.num_resources = ARRAY_SIZE(ab8500_temp_resources),
 		.resources = ab8500_temp_resources,
 	},
+	{
+		.name = "ab8500-usb",
+		.num_resources = ARRAY_SIZE(ab8500_usb_resources),
+		.resources = ab8500_usb_resources,
+	},
+	{
+		.name = "ab8500-codec",
+	},
 };
 
-static struct mfd_cell ab8500_bm_devs[] = {
+static struct mfd_cell ab9540_devs[] = {
+#ifdef CONFIG_DEBUG_FS
 	{
-		.name = "ab8500-charger",
-		.of_compatible = "stericsson,ab8500-charger",
-		.num_resources = ARRAY_SIZE(ab8500_charger_resources),
-		.resources = ab8500_charger_resources,
-		.platform_data = &ab8500_bm_data,
-		.pdata_size = sizeof(ab8500_bm_data),
+		.name = "ab8500-debug",
+		.num_resources = ARRAY_SIZE(ab8500_debug_resources),
+		.resources = ab8500_debug_resources,
 	},
+#endif
 	{
-		.name = "ab8500-btemp",
-		.of_compatible = "stericsson,ab8500-btemp",
-		.num_resources = ARRAY_SIZE(ab8500_btemp_resources),
-		.resources = ab8500_btemp_resources,
-		.platform_data = &ab8500_bm_data,
-		.pdata_size = sizeof(ab8500_bm_data),
+		.name = "ab8500-sysctrl",
 	},
 	{
-		.name = "ab8500-fg",
-		.of_compatible = "stericsson,ab8500-fg",
-		.num_resources = ARRAY_SIZE(ab8500_fg_resources),
-		.resources = ab8500_fg_resources,
-		.platform_data = &ab8500_bm_data,
-		.pdata_size = sizeof(ab8500_bm_data),
+		.name = "ab8500-regulator",
 	},
 	{
-		.name = "ab8500-chargalg",
-		.of_compatible = "stericsson,ab8500-chargalg",
-		.num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
-		.resources = ab8500_chargalg_resources,
-		.platform_data = &ab8500_bm_data,
-		.pdata_size = sizeof(ab8500_bm_data),
+		.name = "abx500-clk",
+		.of_compatible = "stericsson,abx500-clk",
+	},
+	{
+		.name = "ab8500-gpadc",
+		.of_compatible = "stericsson,ab8500-gpadc",
+		.num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
+		.resources = ab8500_gpadc_resources,
+	},
+	{
+		.name = "ab8500-rtc",
+		.num_resources = ARRAY_SIZE(ab8500_rtc_resources),
+		.resources = ab8500_rtc_resources,
+	},
+	{
+		.name = "ab8500-acc-det",
+		.num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
+		.resources = ab8500_av_acc_detect_resources,
+	},
+	{
+		.name = "ab8500-poweron-key",
+		.num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
+		.resources = ab8500_poweronkey_db_resources,
+	},
+	{
+		.name = "ab8500-pwm",
+		.id = 1,
+	},
+	{
+		.name = "ab8500-leds",
+	},
+	{
+		.name = "abx500-temp",
+		.num_resources = ARRAY_SIZE(ab8500_temp_resources),
+		.resources = ab8500_temp_resources,
+	},
+	{
+		.name = "pinctrl-ab9540",
+		.of_compatible = "stericsson,ab9540-gpio",
+	},
+	{
+		.name = "ab9540-usb",
+		.num_resources = ARRAY_SIZE(ab8500_usb_resources),
+		.resources = ab8500_usb_resources,
+	},
+	{
+		.name = "ab9540-codec",
+	},
+	{
+		.name = "ab-iddet",
+		.num_resources = ARRAY_SIZE(ab8505_iddet_resources),
+		.resources = ab8505_iddet_resources,
 	},
 };
 
-static struct mfd_cell ab8500_devs[] = {
+/* Device list for ab8505  */
+static struct mfd_cell ab8505_devs[] = {
+#ifdef CONFIG_DEBUG_FS
 	{
-		.name = "pinctrl-ab8500",
-		.of_compatible = "stericsson,ab8500-gpio",
+		.name = "ab8500-debug",
+		.num_resources = ARRAY_SIZE(ab8500_debug_resources),
+		.resources = ab8500_debug_resources,
+	},
+#endif
+	{
+		.name = "ab8500-sysctrl",
+	},
+	{
+		.name = "ab8500-regulator",
+	},
+	{
+		.name = "abx500-clk",
+		.of_compatible = "stericsson,abx500-clk",
+	},
+	{
+		.name = "ab8500-gpadc",
+		.num_resources = ARRAY_SIZE(ab8505_gpadc_resources),
+		.resources = ab8505_gpadc_resources,
+	},
+	{
+		.name = "ab8500-rtc",
+		.num_resources = ARRAY_SIZE(ab8500_rtc_resources),
+		.resources = ab8500_rtc_resources,
+	},
+	{
+		.name = "ab8500-acc-det",
+		.num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
+		.resources = ab8500_av_acc_detect_resources,
+	},
+	{
+		.name = "ab8500-poweron-key",
+		.num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
+		.resources = ab8500_poweronkey_db_resources,
+	},
+	{
+		.name = "ab8500-pwm",
+		.id = 1,
+	},
+	{
+		.name = "ab8500-leds",
+	},
+	{
+		.name = "ab8500-gpio",
 	},
 	{
 		.name = "ab8500-usb",
-		.of_compatible = "stericsson,ab8500-usb",
 		.num_resources = ARRAY_SIZE(ab8500_usb_resources),
 		.resources = ab8500_usb_resources,
 	},
 	{
 		.name = "ab8500-codec",
-		.of_compatible = "stericsson,ab8500-codec",
+	},
+	{
+		.name = "ab-iddet",
+		.num_resources = ARRAY_SIZE(ab8505_iddet_resources),
+		.resources = ab8505_iddet_resources,
 	},
 };
 
-static struct mfd_cell ab9540_devs[] = {
+static struct mfd_cell ab8540_devs[] = {
+#ifdef CONFIG_DEBUG_FS
 	{
-		.name = "pinctrl-ab9540",
-		.of_compatible = "stericsson,ab9540-gpio",
+		.name = "ab8500-debug",
+		.num_resources = ARRAY_SIZE(ab8500_debug_resources),
+		.resources = ab8500_debug_resources,
+	},
+#endif
+	{
+		.name = "ab8500-sysctrl",
 	},
 	{
-		.name = "ab9540-usb",
+		.name = "ab8500-regulator",
+	},
+	{
+		.name = "abx500-clk",
+		.of_compatible = "stericsson,abx500-clk",
+	},
+	{
+		.name = "ab8500-gpadc",
+		.num_resources = ARRAY_SIZE(ab8505_gpadc_resources),
+		.resources = ab8505_gpadc_resources,
+	},
+	{
+		.name = "ab8500-rtc",
+		.num_resources = ARRAY_SIZE(ab8500_rtc_resources),
+		.resources = ab8500_rtc_resources,
+	},
+	{
+		.name = "ab8500-acc-det",
+		.num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
+		.resources = ab8500_av_acc_detect_resources,
+	},
+	{
+		.name = "ab8500-poweron-key",
+		.num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
+		.resources = ab8500_poweronkey_db_resources,
+	},
+	{
+		.name = "ab8500-pwm",
+		.id = 1,
+	},
+	{
+		.name = "ab8500-leds",
+	},
+	{
+		.name = "abx500-temp",
+		.num_resources = ARRAY_SIZE(ab8500_temp_resources),
+		.resources = ab8500_temp_resources,
+	},
+	{
+		.name = "ab8500-gpio",
+	},
+	{
+		.name = "ab8540-usb",
 		.num_resources = ARRAY_SIZE(ab8500_usb_resources),
 		.resources = ab8500_usb_resources,
 	},
 	{
-		.name = "ab9540-codec",
+		.name = "ab8540-codec",
 	},
-};
-
-/* Device list common to ab9540 and ab8505 */
-static struct mfd_cell ab9540_ab8505_devs[] = {
 	{
 		.name = "ab-iddet",
 		.num_resources = ARRAY_SIZE(ab8505_iddet_resources),
@@ -1142,6 +1323,7 @@ static ssize_t show_chip_id(struct device *dev,
 	struct ab8500 *ab8500;
 
 	ab8500 = dev_get_drvdata(dev);
+
 	return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
 }
 
@@ -1171,6 +1353,15 @@ static ssize_t show_switch_off_status(struct device *dev,
 	return sprintf(buf, "%#x\n", value);
 }
 
+/* use mask and set to override the register turn_on_stat value */
+void ab8500_override_turn_on_stat(u8 mask, u8 set)
+{
+	spin_lock(&on_stat_lock);
+	turn_on_stat_mask = mask;
+	turn_on_stat_set = set;
+	spin_unlock(&on_stat_lock);
+}
+
 /*
  * ab8500 has turned on due to (TURN_ON_STATUS):
  * 0x01 PORnVbat
@@ -1194,9 +1385,38 @@ static ssize_t show_turn_on_status(struct device *dev,
 		AB8500_TURN_ON_STATUS, &value);
 	if (ret < 0)
 		return ret;
+
+	/*
+	 * In L9540, turn_on_status register is not updated correctly if
+	 * the device is rebooted with AC/USB charger connected. Due to
+	 * this, the device boots android instead of entering into charge
+	 * only mode. Read the AC/USB status register to detect the charger
+	 * presence and update the turn on status manually.
+	 */
+	if (is_ab9540(ab8500)) {
+		spin_lock(&on_stat_lock);
+		value = (value & turn_on_stat_mask) | turn_on_stat_set;
+		spin_unlock(&on_stat_lock);
+	}
+
 	return sprintf(buf, "%#x\n", value);
 }
 
+static ssize_t show_turn_on_status_2(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	int ret;
+	u8 value;
+	struct ab8500 *ab8500;
+
+	ab8500 = dev_get_drvdata(dev);
+	ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
+		AB8505_TURN_ON_STATUS_2, &value);
+	if (ret < 0)
+		return ret;
+	return sprintf(buf, "%#x\n", (value & 0x1));
+}
+
 static ssize_t show_ab9540_dbbrstn(struct device *dev,
 				struct device_attribute *attr, char *buf)
 {
@@ -1253,6 +1473,7 @@ exit:
 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
+static DEVICE_ATTR(turn_on_status_2, S_IRUGO, show_turn_on_status_2, NULL);
 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
 			show_ab9540_dbbrstn, store_ab9540_dbbrstn);
 
@@ -1263,6 +1484,11 @@ static struct attribute *ab8500_sysfs_entries[] = {
 	NULL,
 };
 
+static struct attribute *ab8505_sysfs_entries[] = {
+	&dev_attr_turn_on_status_2.attr,
+	NULL,
+};
+
 static struct attribute *ab9540_sysfs_entries[] = {
 	&dev_attr_chip_id.attr,
 	&dev_attr_switch_off_status.attr,
@@ -1275,6 +1501,10 @@ static struct attribute_group ab8500_attr_group = {
 	.attrs	= ab8500_sysfs_entries,
 };
 
+static struct attribute_group ab8505_attr_group = {
+	.attrs	= ab8505_sysfs_entries,
+};
+
 static struct attribute_group ab9540_attr_group = {
 	.attrs	= ab9540_sysfs_entries,
 };
@@ -1290,6 +1520,15 @@ static int ab8500_probe(struct platform_device *pdev)
 		"Battery level lower than power on reset threshold",
 		"Power on key 1 pressed longer than 10 seconds",
 		"DB8500 thermal shutdown"};
+	static char *turn_on_status[] = {
+		"Battery rising (Vbat)",
+		"Power On Key 1 dbF",
+		"Power On Key 2 dbF",
+		"RTC Alarm",
+		"Main Charger Detect",
+		"Vbus Detect (USB)",
+		"USB ID Detect",
+		"UART Factory Mode Detect"};
 	struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
 	const struct platform_device_id *platid = platform_get_device_id(pdev);
 	enum ab8500_version version = AB8500_VERSION_UNDEFINED;
@@ -1351,13 +1590,20 @@ static int ab8500_probe(struct platform_device *pdev)
 			ab8500->chip_id >> 4,
 			ab8500->chip_id & 0x0F);
 
-	/* Configure AB8500 or AB9540 IRQ */
-	if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
+	/* Configure AB8540 */
+	if (is_ab8540(ab8500)) {
+		ab8500->mask_size = AB8540_NUM_IRQ_REGS;
+		ab8500->irq_reg_offset = ab8540_irq_regoffset;
+		ab8500->it_latchhier_num = AB8540_IT_LATCHHIER_NUM;
+	}/* Configure AB8500 or AB9540 IRQ */
+	else if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
 		ab8500->mask_size = AB9540_NUM_IRQ_REGS;
 		ab8500->irq_reg_offset = ab9540_irq_regoffset;
+		ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
 	} else {
 		ab8500->mask_size = AB8500_NUM_IRQ_REGS;
 		ab8500->irq_reg_offset = ab8500_irq_regoffset;
+		ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM;
 	}
 	ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL);
 	if (!ab8500->mask)
@@ -1396,10 +1642,36 @@ static int ab8500_probe(struct platform_device *pdev)
 	} else {
 		printk(KERN_CONT " None\n");
 	}
+	ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
+		AB8500_TURN_ON_STATUS, &value);
+	if (ret < 0)
+		return ret;
+	dev_info(ab8500->dev, "turn on reason(s) (%#x): ", value);
+
+	if (value) {
+		for (i = 0; i < ARRAY_SIZE(turn_on_status); i++) {
+			if (value & 1)
+				printk("\"%s\" ", turn_on_status[i]);
+			value = value >> 1;
+		}
+		printk("\n");
+	} else {
+		printk("None\n");
+	}
 
 	if (plat && plat->init)
 		plat->init(ab8500);
 
+	if (is_ab9540(ab8500)) {
+		ret = get_register_interruptible(ab8500, AB8500_CHARGER,
+			AB8500_CH_USBCH_STAT1_REG, &value);
+		if (ret < 0)
+			return ret;
+		if ((value & VBUS_DET_DBNC1) && (value & VBUS_DET_DBNC100))
+			ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON,
+						     AB8500_VBUS_DET);
+	}
+
 	/* Clear and mask all interrupts */
 	for (i = 0; i < ab8500->mask_size; i++) {
 		/*
@@ -1410,6 +1682,9 @@ static int ab8500_probe(struct platform_device *pdev)
 				is_ab8500_1p1_or_earlier(ab8500))
 			continue;
 
+		if (ab8500->irq_reg_offset[i] < 0)
+			continue;
+
 		get_register_interruptible(ab8500, AB8500_INTERRUPT,
 			AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
 			&value);
@@ -1428,26 +1703,10 @@ static int ab8500_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	/*  Activate this feature only in ab9540 */
-	/*  till tests are done on ab8500 1p2 or later*/
-	if (is_ab9540(ab8500)) {
-		ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
-						ab8500_hierarchical_irq,
-						IRQF_ONESHOT | IRQF_NO_SUSPEND,
-						"ab8500", ab8500);
-	}
-	else {
-		ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
-						ab8500_irq,
-						IRQF_ONESHOT | IRQF_NO_SUSPEND,
-						"ab8500", ab8500);
-		if (ret)
-			return ret;
-	}
-
-	ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
-			ARRAY_SIZE(abx500_common_devs), NULL,
-			ab8500->irq_base, ab8500->domain);
+	ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL,
+			ab8500_hierarchical_irq,
+			IRQF_ONESHOT | IRQF_NO_SUSPEND,
+			"ab8500", ab8500);
 	if (ret)
 		return ret;
 
@@ -1455,6 +1714,14 @@ static int ab8500_probe(struct platform_device *pdev)
 		ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
 				ARRAY_SIZE(ab9540_devs), NULL,
 				ab8500->irq_base, ab8500->domain);
+	else if (is_ab8540(ab8500))
+		ret = mfd_add_devices(ab8500->dev, 0, ab8540_devs,
+			      ARRAY_SIZE(ab8540_devs), NULL,
+			      ab8500->irq_base, ab8500->domain);
+	else if (is_ab8505(ab8500))
+		ret = mfd_add_devices(ab8500->dev, 0, ab8505_devs,
+			      ARRAY_SIZE(ab8505_devs), NULL,
+			      ab8500->irq_base, ab8500->domain);
 	else
 		ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
 				ARRAY_SIZE(ab8500_devs), NULL,
@@ -1462,13 +1729,6 @@ static int ab8500_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	if (is_ab9540(ab8500) || is_ab8505(ab8500))
-		ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs,
-				ARRAY_SIZE(ab9540_ab8505_devs), NULL,
-				ab8500->irq_base, ab8500->domain);
-	if (ret)
-		return ret;
-
 	if (!no_bm) {
 		/* Add battery management devices */
 		ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
@@ -1478,12 +1738,19 @@ static int ab8500_probe(struct platform_device *pdev)
 			dev_err(ab8500->dev, "error adding bm devices\n");
 	}
 
-	if (is_ab9540(ab8500))
+	if (((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
+			ab8500->chip_id >= AB8500_CUT2P0) || is_ab8540(ab8500))
 		ret = sysfs_create_group(&ab8500->dev->kobj,
 					&ab9540_attr_group);
 	else
 		ret = sysfs_create_group(&ab8500->dev->kobj,
 					&ab8500_attr_group);
+
+	if ((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
+			ab8500->chip_id >= AB8500_CUT2P0)
+		ret = sysfs_create_group(&ab8500->dev->kobj,
+					 &ab8505_attr_group);
+
 	if (ret)
 		dev_err(ab8500->dev, "error creating sysfs entries\n");
 
@@ -1494,11 +1761,16 @@ static int ab8500_remove(struct platform_device *pdev)
 {
 	struct ab8500 *ab8500 = platform_get_drvdata(pdev);
 
-	if (is_ab9540(ab8500))
+	if (((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
+			ab8500->chip_id >= AB8500_CUT2P0) || is_ab8540(ab8500))
 		sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
 	else
 		sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
 
+	if ((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
+			ab8500->chip_id >= AB8500_CUT2P0)
+		sysfs_remove_group(&ab8500->dev->kobj, &ab8505_attr_group);
+
 	mfd_remove_devices(ab8500->dev);
 
 	return 0;
diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index 45fe3c50eb03..b88bbbc15f1e 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -80,6 +80,7 @@
 #include <linux/interrupt.h>
 #include <linux/kobject.h>
 #include <linux/slab.h>
+#include <linux/irq.h>
 
 #include <linux/mfd/abx500.h>
 #include <linux/mfd/abx500/ab8500.h>
@@ -90,6 +91,9 @@
 #include <linux/ctype.h>
 #endif
 
+/* TODO: this file should not reference IRQ_DB8500_AB8500! */
+#include <mach/irqs.h>
+
 static u32 debug_bank;
 static u32 debug_address;
 
@@ -101,6 +105,11 @@ static int num_irqs;
 static struct device_attribute **dev_attr;
 static char **event_name;
 
+static u8 avg_sample = SAMPLE_16;
+static u8 trig_edge = RISING_EDGE;
+static u8 conv_type = ADC_SW;
+static u8 trig_timer;
+
 /**
  * struct ab8500_reg_range
  * @first: the first address of the range
@@ -150,7 +159,9 @@ static struct hwreg_cfg hwreg_cfg = {
 
 #define AB8500_REV_REG 0x80
 
-static struct ab8500_prcmu_ranges debug_ranges[AB8500_NUM_BANKS] = {
+static struct ab8500_prcmu_ranges *debug_ranges;
+
+struct ab8500_prcmu_ranges ab8500_debug_ranges[AB8500_NUM_BANKS] = {
 	[0x0] = {
 		.num_ranges = 0,
 		.range = NULL,
@@ -354,7 +365,7 @@ static struct ab8500_prcmu_ranges debug_ranges[AB8500_NUM_BANKS] = {
 			},
 			{
 				.first = 0xf5,
-				.last =	0xf6,
+				.last = 0xf6,
 			},
 		},
 	},
@@ -479,6 +490,781 @@ static struct ab8500_prcmu_ranges debug_ranges[AB8500_NUM_BANKS] = {
 	},
 };
 
+struct ab8500_prcmu_ranges ab8505_debug_ranges[AB8500_NUM_BANKS] = {
+	[0x0] = {
+		.num_ranges = 0,
+		.range = NULL,
+	},
+	[AB8500_SYS_CTRL1_BLOCK] = {
+		.num_ranges = 5,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x04,
+			},
+			{
+				.first = 0x42,
+				.last = 0x42,
+			},
+			{
+				.first = 0x52,
+				.last = 0x52,
+			},
+			{
+				.first = 0x54,
+				.last = 0x57,
+			},
+			{
+				.first = 0x80,
+				.last = 0x83,
+			},
+		},
+	},
+	[AB8500_SYS_CTRL2_BLOCK] = {
+		.num_ranges = 5,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x0D,
+			},
+			{
+				.first = 0x0F,
+				.last = 0x17,
+			},
+			{
+				.first = 0x20,
+				.last = 0x20,
+			},
+			{
+				.first = 0x30,
+				.last = 0x30,
+			},
+			{
+				.first = 0x32,
+				.last = 0x3A,
+			},
+		},
+	},
+	[AB8500_REGU_CTRL1] = {
+		.num_ranges = 3,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x00,
+			},
+			{
+				.first = 0x03,
+				.last = 0x11,
+			},
+			{
+				.first = 0x80,
+				.last = 0x86,
+			},
+		},
+	},
+	[AB8500_REGU_CTRL2] = {
+		.num_ranges = 6,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x06,
+			},
+			{
+				.first = 0x08,
+				.last = 0x15,
+			},
+			{
+				.first = 0x17,
+				.last = 0x19,
+			},
+			{
+				.first = 0x1B,
+				.last = 0x1D,
+			},
+			{
+				.first = 0x1F,
+				.last = 0x30,
+			},
+			{
+				.first = 0x40,
+				.last = 0x48,
+			},
+			/* 0x80-0x8B is SIM registers and should
+			 * not be accessed from here */
+		},
+	},
+	[AB8500_USB] = {
+		.num_ranges = 3,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x80,
+				.last = 0x83,
+			},
+			{
+				.first = 0x87,
+				.last = 0x8A,
+			},
+			{
+				.first = 0x91,
+				.last = 0x94,
+			},
+		},
+	},
+	[AB8500_TVOUT] = {
+		.num_ranges = 0,
+		.range = NULL,
+	},
+	[AB8500_DBI] = {
+		.num_ranges = 0,
+		.range = NULL,
+	},
+	[AB8500_ECI_AV_ACC] = {
+		.num_ranges = 1,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x80,
+				.last = 0x82,
+			},
+		},
+	},
+	[AB8500_RESERVED] = {
+		.num_ranges = 0,
+		.range = NULL,
+	},
+	[AB8500_GPADC] = {
+		.num_ranges = 1,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x08,
+			},
+		},
+	},
+	[AB8500_CHARGER] = {
+		.num_ranges = 9,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x02,
+				.last = 0x03,
+			},
+			{
+				.first = 0x05,
+				.last = 0x05,
+			},
+			{
+				.first = 0x40,
+				.last = 0x44,
+			},
+			{
+				.first = 0x50,
+				.last = 0x57,
+			},
+			{
+				.first = 0x60,
+				.last = 0x60,
+			},
+			{
+				.first = 0xA0,
+				.last = 0xA7,
+			},
+			{
+				.first = 0xAF,
+				.last = 0xB2,
+			},
+			{
+				.first = 0xC0,
+				.last = 0xC2,
+			},
+			{
+				.first = 0xF5,
+				.last = 0xF5,
+			},
+		},
+	},
+	[AB8500_GAS_GAUGE] = {
+		.num_ranges = 3,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x00,
+			},
+			{
+				.first = 0x07,
+				.last = 0x0A,
+			},
+			{
+				.first = 0x10,
+				.last = 0x14,
+			},
+		},
+	},
+	[AB8500_AUDIO] = {
+		.num_ranges = 1,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x83,
+			},
+		},
+	},
+	[AB8500_INTERRUPT] = {
+		.num_ranges = 11,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x04,
+			},
+			{
+				.first = 0x06,
+				.last = 0x07,
+			},
+			{
+				.first = 0x09,
+				.last = 0x09,
+			},
+			{
+				.first = 0x0B,
+				.last = 0x0C,
+			},
+			{
+				.first = 0x12,
+				.last = 0x15,
+			},
+			{
+				.first = 0x18,
+				.last = 0x18,
+			},
+			/* Latch registers should not be read here */
+			{
+				.first = 0x40,
+				.last = 0x44,
+			},
+			{
+				.first = 0x46,
+				.last = 0x49,
+			},
+			{
+				.first = 0x4B,
+				.last = 0x4D,
+			},
+			{
+				.first = 0x52,
+				.last = 0x55,
+			},
+			{
+				.first = 0x58,
+				.last = 0x58,
+			},
+			/* LatchHier registers should not be read here */
+		},
+	},
+	[AB8500_RTC] = {
+		.num_ranges = 2,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x14,
+			},
+			{
+				.first = 0x16,
+				.last = 0x17,
+			},
+		},
+	},
+	[AB8500_MISC] = {
+		.num_ranges = 8,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x06,
+			},
+			{
+				.first = 0x10,
+				.last = 0x16,
+			},
+			{
+				.first = 0x20,
+				.last = 0x26,
+			},
+			{
+				.first = 0x30,
+				.last = 0x36,
+			},
+			{
+				.first = 0x40,
+				.last = 0x46,
+			},
+			{
+				.first = 0x50,
+				.last = 0x50,
+			},
+			{
+				.first = 0x60,
+				.last = 0x6B,
+			},
+			{
+				.first = 0x80,
+				.last = 0x82,
+			},
+		},
+	},
+	[AB8500_DEVELOPMENT] = {
+		.num_ranges = 2,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x00,
+			},
+			{
+				.first = 0x05,
+				.last = 0x05,
+			},
+		},
+	},
+	[AB8500_DEBUG] = {
+		.num_ranges = 1,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x05,
+				.last = 0x07,
+			},
+		},
+	},
+	[AB8500_PROD_TEST] = {
+		.num_ranges = 0,
+		.range = NULL,
+	},
+	[AB8500_STE_TEST] = {
+		.num_ranges = 0,
+		.range = NULL,
+	},
+	[AB8500_OTP_EMUL] = {
+		.num_ranges = 1,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x01,
+				.last = 0x15,
+			},
+		},
+	},
+};
+
+struct ab8500_prcmu_ranges ab8540_debug_ranges[AB8500_NUM_BANKS] = {
+	[AB8500_M_FSM_RANK] = {
+		.num_ranges = 1,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x0B,
+			},
+		},
+	},
+	[AB8500_SYS_CTRL1_BLOCK] = {
+		.num_ranges = 6,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x04,
+			},
+			{
+				.first = 0x42,
+				.last = 0x42,
+			},
+			{
+				.first = 0x50,
+				.last = 0x54,
+			},
+			{
+				.first = 0x57,
+				.last = 0x57,
+			},
+			{
+				.first = 0x80,
+				.last = 0x83,
+			},
+			{
+				.first = 0x90,
+				.last = 0x90,
+			},
+		},
+	},
+	[AB8500_SYS_CTRL2_BLOCK] = {
+		.num_ranges = 5,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x0D,
+			},
+			{
+				.first = 0x0F,
+				.last = 0x10,
+			},
+			{
+				.first = 0x20,
+				.last = 0x21,
+			},
+			{
+				.first = 0x32,
+				.last = 0x3C,
+			},
+			{
+				.first = 0x40,
+				.last = 0x42,
+			},
+		},
+	},
+	[AB8500_REGU_CTRL1] = {
+		.num_ranges = 4,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x03,
+				.last = 0x15,
+			},
+			{
+				.first = 0x20,
+				.last = 0x20,
+			},
+			{
+				.first = 0x80,
+				.last = 0x85,
+			},
+			{
+				.first = 0x87,
+				.last = 0x88,
+			},
+		},
+	},
+	[AB8500_REGU_CTRL2] = {
+		.num_ranges = 8,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x06,
+			},
+			{
+				.first = 0x08,
+				.last = 0x15,
+			},
+			{
+				.first = 0x17,
+				.last = 0x19,
+			},
+			{
+				.first = 0x1B,
+				.last = 0x1D,
+			},
+			{
+				.first = 0x1F,
+				.last = 0x2F,
+			},
+			{
+				.first = 0x31,
+				.last = 0x3A,
+			},
+			{
+				.first = 0x43,
+				.last = 0x44,
+			},
+			{
+				.first = 0x48,
+				.last = 0x49,
+			},
+		},
+	},
+	[AB8500_USB] = {
+		.num_ranges = 3,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x80,
+				.last = 0x83,
+			},
+			{
+				.first = 0x87,
+				.last = 0x8A,
+			},
+			{
+				.first = 0x91,
+				.last = 0x94,
+			},
+		},
+	},
+	[AB8500_TVOUT] = {
+		.num_ranges = 0,
+		.range = NULL
+	},
+	[AB8500_DBI] = {
+		.num_ranges = 4,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x07,
+			},
+			{
+				.first = 0x10,
+				.last = 0x11,
+			},
+			{
+				.first = 0x20,
+				.last = 0x21,
+			},
+			{
+				.first = 0x30,
+				.last = 0x43,
+			},
+		},
+	},
+	[AB8500_ECI_AV_ACC] = {
+		.num_ranges = 2,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x03,
+			},
+			{
+				.first = 0x80,
+				.last = 0x82,
+			},
+		},
+	},
+	[AB8500_RESERVED] = {
+		.num_ranges = 0,
+		.range = NULL,
+	},
+	[AB8500_GPADC] = {
+		.num_ranges = 4,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x01,
+			},
+			{
+				.first = 0x04,
+				.last = 0x06,
+			},
+			{
+				.first = 0x09,
+				.last = 0x0A,
+			},
+			{
+				.first = 0x10,
+				.last = 0x14,
+			},
+		},
+	},
+	[AB8500_CHARGER] = {
+		.num_ranges = 10,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x00,
+			},
+			{
+				.first = 0x02,
+				.last = 0x05,
+			},
+			{
+				.first = 0x40,
+				.last = 0x44,
+			},
+			{
+				.first = 0x50,
+				.last = 0x57,
+			},
+			{
+				.first = 0x60,
+				.last = 0x60,
+			},
+			{
+				.first = 0x70,
+				.last = 0x70,
+			},
+			{
+				.first = 0xA0,
+				.last = 0xA9,
+			},
+			{
+				.first = 0xAF,
+				.last = 0xB2,
+			},
+			{
+				.first = 0xC0,
+				.last = 0xC6,
+			},
+			{
+				.first = 0xF5,
+				.last = 0xF5,
+			},
+		},
+	},
+	[AB8500_GAS_GAUGE] = {
+		.num_ranges = 3,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x00,
+			},
+			{
+				.first = 0x07,
+				.last = 0x0A,
+			},
+			{
+				.first = 0x10,
+				.last = 0x14,
+			},
+		},
+	},
+	[AB8500_AUDIO] = {
+		.num_ranges = 1,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x9f,
+			},
+		},
+	},
+	[AB8500_INTERRUPT] = {
+		.num_ranges = 6,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x05,
+			},
+			{
+				.first = 0x0B,
+				.last = 0x0D,
+			},
+			{
+				.first = 0x12,
+				.last = 0x20,
+			},
+			/* Latch registers should not be read here */
+			{
+				.first = 0x40,
+				.last = 0x45,
+			},
+			{
+				.first = 0x4B,
+				.last = 0x4D,
+			},
+			{
+				.first = 0x52,
+				.last = 0x60,
+			},
+			/* LatchHier registers should not be read here */
+		},
+	},
+	[AB8500_RTC] = {
+		.num_ranges = 3,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x07,
+			},
+			{
+				.first = 0x0B,
+				.last = 0x18,
+			},
+			{
+				.first = 0x20,
+				.last = 0x25,
+			},
+		},
+	},
+	[AB8500_MISC] = {
+		.num_ranges = 9,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x06,
+			},
+			{
+				.first = 0x10,
+				.last = 0x16,
+			},
+			{
+				.first = 0x20,
+				.last = 0x26,
+			},
+			{
+				.first = 0x30,
+				.last = 0x36,
+			},
+			{
+				.first = 0x40,
+				.last = 0x49,
+			},
+			{
+				.first = 0x50,
+				.last = 0x50,
+			},
+			{
+				.first = 0x60,
+				.last = 0x6B,
+			},
+			{
+				.first = 0x70,
+				.last = 0x74,
+			},
+			{
+				.first = 0x80,
+				.last = 0x82,
+			},
+		},
+	},
+	[AB8500_DEVELOPMENT] = {
+		.num_ranges = 3,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x01,
+			},
+			{
+				.first = 0x06,
+				.last = 0x06,
+			},
+			{
+				.first = 0x10,
+				.last = 0x21,
+			},
+		},
+	},
+	[AB8500_DEBUG] = {
+		.num_ranges = 3,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x01,
+				.last = 0x0C,
+			},
+			{
+				.first = 0x0E,
+				.last = 0x11,
+			},
+			{
+				.first = 0x80,
+				.last = 0x81,
+			},
+		},
+	},
+	[AB8500_PROD_TEST] = {
+		.num_ranges = 0,
+		.range = NULL,
+	},
+	[AB8500_STE_TEST] = {
+		.num_ranges = 0,
+		.range = NULL,
+	},
+	[AB8500_OTP_EMUL] = {
+		.num_ranges = 1,
+		.range = (struct ab8500_reg_range[]) {
+			{
+				.first = 0x00,
+				.last = 0x3F,
+			},
+		},
+	},
+};
+
+
 static irqreturn_t ab8500_debug_handler(int irq, void *data)
 {
 	char buf[16];
@@ -520,19 +1306,16 @@ static int ab8500_registers_print(struct device *dev, u32 bank,
 			}
 
 			if (s) {
-				err = seq_printf(s, "  [%u/0x%02X]: 0x%02X\n",
+				err = seq_printf(s, "  [0x%02X/0x%02X]: 0x%02X\n",
 					bank, reg, value);
 				if (err < 0) {
-					dev_err(dev,
-					"seq_printf overflow bank=%d reg=%d\n",
-						bank, reg);
 					/* Error is not returned here since
 					 * the output is wanted in any case */
 					return 0;
 				}
 			} else {
-				printk(KERN_INFO" [%u/0x%02X]: 0x%02X\n", bank,
-					reg, value);
+				printk(KERN_INFO" [0x%02X/0x%02X]: 0x%02X\n",
+					bank, reg, value);
 			}
 		}
 	}
@@ -546,7 +1329,7 @@ static int ab8500_print_bank_registers(struct seq_file *s, void *p)
 
 	seq_printf(s, AB8500_NAME_STRING " register values:\n");
 
-	seq_printf(s, " bank %u:\n", bank);
+	seq_printf(s, " bank 0x%02X:\n", bank);
 
 	ab8500_registers_print(dev, bank, s);
 	return 0;
@@ -573,10 +1356,8 @@ static int ab8500_print_all_banks(struct seq_file *s, void *p)
 
 	seq_printf(s, AB8500_NAME_STRING " register values:\n");
 
-	for (i = 1; i < AB8500_NUM_BANKS; i++) {
-		err = seq_printf(s, " bank %u:\n", i);
-		if (err < 0)
-			dev_err(dev, "seq_printf overflow, bank=%d\n", i);
+	for (i = 0; i < AB8500_NUM_BANKS; i++) {
+		err = seq_printf(s, " bank 0x%02X:\n", i);
 
 		ab8500_registers_print(dev, i, s);
 	}
@@ -591,11 +1372,68 @@ void ab8500_dump_all_banks(struct device *dev)
 	printk(KERN_INFO"ab8500 register values:\n");
 
 	for (i = 1; i < AB8500_NUM_BANKS; i++) {
-		printk(KERN_INFO" bank %u:\n", i);
+		printk(KERN_INFO" bank 0x%02X:\n", i);
 		ab8500_registers_print(dev, i, NULL);
 	}
 }
 
+/* Space for 500 registers. */
+#define DUMP_MAX_REGS 700
+struct ab8500_register_dump
+{
+	u8 bank;
+	u8 reg;
+	u8 value;
+} ab8500_complete_register_dump[DUMP_MAX_REGS];
+
+extern int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size);
+
+/* This shall only be called upon kernel panic! */
+void ab8500_dump_all_banks_to_mem(void)
+{
+	int i, r = 0;
+	u8 bank;
+	int err = 0;
+
+	pr_info("Saving all ABB registers at \"ab8500_complete_register_dump\" "
+		"for crash analyze.\n");
+
+	for (bank = 0; bank < AB8500_NUM_BANKS; bank++) {
+		for (i = 0; i < debug_ranges[bank].num_ranges; i++) {
+			u8 reg;
+
+			for (reg = debug_ranges[bank].range[i].first;
+			     reg <= debug_ranges[bank].range[i].last;
+			     reg++) {
+				u8 value;
+
+				err = prcmu_abb_read(bank, reg, &value, 1);
+
+				if (err < 0)
+					goto out;
+
+				ab8500_complete_register_dump[r].bank = bank;
+				ab8500_complete_register_dump[r].reg = reg;
+				ab8500_complete_register_dump[r].value = value;
+
+				r++;
+
+				if (r >= DUMP_MAX_REGS) {
+					pr_err("%s: too many register to dump!\n",
+						__func__);
+					err = -EINVAL;
+					goto out;
+				}
+			}
+		}
+	}
+out:
+	if (err >= 0)
+		pr_info("Saved all ABB registers.\n");
+	else
+		pr_info("Failed to save all ABB registers.\n");
+}
+
 static int ab8500_all_banks_open(struct inode *inode, struct file *file)
 {
 	struct seq_file *s;
@@ -625,7 +1463,7 @@ static const struct file_operations ab8500_all_banks_fops = {
 
 static int ab8500_bank_print(struct seq_file *s, void *p)
 {
-	return seq_printf(s, "%d\n", debug_bank);
+	return seq_printf(s, "0x%02X\n", debug_bank);
 }
 
 static int ab8500_bank_open(struct inode *inode, struct file *file)
@@ -641,7 +1479,6 @@ static ssize_t ab8500_bank_write(struct file *file,
 	unsigned long user_bank;
 	int err;
 
-	/* Get userspace string and assure termination */
 	err = kstrtoul_from_user(user_buf, count, 0, &user_bank);
 	if (err)
 		return err;
@@ -667,14 +1504,13 @@ static int ab8500_address_open(struct inode *inode, struct file *file)
 }
 
 static ssize_t ab8500_address_write(struct file *file,
-	const char __user *user_buf,
-	size_t count, loff_t *ppos)
+				    const char __user *user_buf,
+				    size_t count, loff_t *ppos)
 {
 	struct device *dev = ((struct seq_file *)(file->private_data))->private;
 	unsigned long user_address;
 	int err;
 
-	/* Get userspace string and assure termination */
 	err = kstrtoul_from_user(user_buf, count, 0, &user_address);
 	if (err)
 		return err;
@@ -684,6 +1520,7 @@ static ssize_t ab8500_address_write(struct file *file,
 		return -EINVAL;
 	}
 	debug_address = user_address;
+
 	return count;
 }
 
@@ -711,14 +1548,13 @@ static int ab8500_val_open(struct inode *inode, struct file *file)
 }
 
 static ssize_t ab8500_val_write(struct file *file,
-	const char __user *user_buf,
-	size_t count, loff_t *ppos)
+				const char __user *user_buf,
+				size_t count, loff_t *ppos)
 {
 	struct device *dev = ((struct seq_file *)(file->private_data))->private;
 	unsigned long user_val;
 	int err;
 
-	/* Get userspace string and assure termination */
 	err = kstrtoul_from_user(user_buf, count, 0, &user_val);
 	if (err)
 		return err;
@@ -741,22 +1577,46 @@ static ssize_t ab8500_val_write(struct file *file,
  * Interrupt status
  */
 static u32 num_interrupts[AB8500_MAX_NR_IRQS];
+static u32 num_wake_interrupts[AB8500_MAX_NR_IRQS];
 static int num_interrupt_lines;
 
+bool __attribute__((weak)) suspend_test_wake_cause_interrupt_is_mine(u32 my_int)
+{
+	return false;
+}
+
 void ab8500_debug_register_interrupt(int line)
 {
-	if (line < num_interrupt_lines)
+	if (line < num_interrupt_lines) {
 		num_interrupts[line]++;
+		if (suspend_test_wake_cause_interrupt_is_mine(IRQ_DB8500_AB8500))
+			num_wake_interrupts[line]++;
+	}
 }
 
 static int ab8500_interrupts_print(struct seq_file *s, void *p)
 {
 	int line;
 
-	seq_printf(s, "irq:  number of\n");
+	seq_printf(s, "name: number:  number of: wake:\n");
 
-	for (line = 0; line < num_interrupt_lines; line++)
-		seq_printf(s, "%3i:  %6i\n", line, num_interrupts[line]);
+	for (line = 0; line < num_interrupt_lines; line++) {
+		struct irq_desc *desc = irq_to_desc(line + irq_first);
+		struct irqaction *action = desc->action;
+
+		seq_printf(s, "%3i:  %6i %4i", line,
+			   num_interrupts[line],
+			   num_wake_interrupts[line]);
+
+		if (desc && desc->name)
+			seq_printf(s, "-%-8s", desc->name);
+		if (action) {
+			seq_printf(s, "  %s", action->name);
+			while ((action = action->next) != NULL)
+				seq_printf(s, ", %s", action->name);
+		}
+		seq_putc(s, '\n');
+	}
 
 	return 0;
 }
@@ -801,6 +1661,79 @@ static int ab8500_hwreg_open(struct inode *inode, struct file *file)
 	return single_open(file, ab8500_hwreg_print, inode->i_private);
 }
 
+#define AB8500_SUPPLY_CONTROL_CONFIG_1 0x01
+#define AB8500_SUPPLY_CONTROL_REG 0x00
+#define AB8500_FIRST_SIM_REG 0x80
+#define AB8500_LAST_SIM_REG 0x8B
+#define AB8505_LAST_SIM_REG 0x8C
+
+static int ab8500_print_modem_registers(struct seq_file *s, void *p)
+{
+	struct device *dev = s->private;
+	struct ab8500 *ab8500;
+	int err;
+	u8 value;
+	u8 orig_value;
+	u32 bank = AB8500_REGU_CTRL2;
+	u32 last_sim_reg = AB8500_LAST_SIM_REG;
+	u32 reg;
+
+	ab8500 = dev_get_drvdata(dev->parent);
+	dev_warn(dev, "WARNING! This operation can interfer with modem side\n"
+		"and should only be done with care\n");
+
+	err = abx500_get_register_interruptible(dev,
+		AB8500_REGU_CTRL1, AB8500_SUPPLY_CONTROL_REG, &orig_value);
+	if (err < 0) {
+		dev_err(dev, "ab->read fail %d\n", err);
+		return err;
+	}
+	/* Config 1 will allow APE side to read SIM registers */
+	err = abx500_set_register_interruptible(dev,
+		AB8500_REGU_CTRL1, AB8500_SUPPLY_CONTROL_REG,
+		AB8500_SUPPLY_CONTROL_CONFIG_1);
+	if (err < 0) {
+		dev_err(dev, "ab->write fail %d\n", err);
+		return err;
+	}
+
+	seq_printf(s, " bank 0x%02X:\n", bank);
+
+	if (is_ab9540(ab8500) || is_ab8505(ab8500))
+		last_sim_reg = AB8505_LAST_SIM_REG;
+
+	for (reg = AB8500_FIRST_SIM_REG; reg <= last_sim_reg; reg++) {
+		err = abx500_get_register_interruptible(dev,
+			bank, reg, &value);
+		if (err < 0) {
+			dev_err(dev, "ab->read fail %d\n", err);
+			return err;
+		}
+		err = seq_printf(s, "  [0x%02X/0x%02X]: 0x%02X\n",
+			bank, reg, value);
+	}
+	err = abx500_set_register_interruptible(dev,
+		AB8500_REGU_CTRL1, AB8500_SUPPLY_CONTROL_REG, orig_value);
+	if (err < 0) {
+		dev_err(dev, "ab->write fail %d\n", err);
+		return err;
+	}
+	return 0;
+}
+
+static int ab8500_modem_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, ab8500_print_modem_registers, inode->i_private);
+}
+
+static const struct file_operations ab8500_modem_fops = {
+	.open = ab8500_modem_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
 static int ab8500_gpadc_bat_ctrl_print(struct seq_file *s, void *p)
 {
 	int bat_ctrl_raw;
@@ -808,12 +1741,13 @@ static int ab8500_gpadc_bat_ctrl_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	bat_ctrl_raw = ab8500_gpadc_read_raw(gpadc, BAT_CTRL);
+	bat_ctrl_raw = ab8500_gpadc_read_raw(gpadc, BAT_CTRL,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	bat_ctrl_convert = ab8500_gpadc_ad_to_voltage(gpadc,
-			BAT_CTRL, bat_ctrl_raw);
+		BAT_CTRL, bat_ctrl_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
-			bat_ctrl_convert, bat_ctrl_raw);
+		bat_ctrl_convert, bat_ctrl_raw);
 }
 
 static int ab8500_gpadc_bat_ctrl_open(struct inode *inode, struct file *file)
@@ -836,16 +1770,17 @@ static int ab8500_gpadc_btemp_ball_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	btemp_ball_raw = ab8500_gpadc_read_raw(gpadc, BTEMP_BALL);
+	btemp_ball_raw = ab8500_gpadc_read_raw(gpadc, BTEMP_BALL,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	btemp_ball_convert = ab8500_gpadc_ad_to_voltage(gpadc, BTEMP_BALL,
-			btemp_ball_raw);
+		btemp_ball_raw);
 
 	return seq_printf(s,
-			"%d,0x%X\n", btemp_ball_convert, btemp_ball_raw);
+		"%d,0x%X\n", btemp_ball_convert, btemp_ball_raw);
 }
 
 static int ab8500_gpadc_btemp_ball_open(struct inode *inode,
-		struct file *file)
+					struct file *file)
 {
 	return single_open(file, ab8500_gpadc_btemp_ball_print, inode->i_private);
 }
@@ -865,19 +1800,20 @@ static int ab8500_gpadc_main_charger_v_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	main_charger_v_raw = ab8500_gpadc_read_raw(gpadc, MAIN_CHARGER_V);
+	main_charger_v_raw = ab8500_gpadc_read_raw(gpadc, MAIN_CHARGER_V,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	main_charger_v_convert = ab8500_gpadc_ad_to_voltage(gpadc,
-			MAIN_CHARGER_V, main_charger_v_raw);
+		MAIN_CHARGER_V, main_charger_v_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
 			main_charger_v_convert, main_charger_v_raw);
 }
 
 static int ab8500_gpadc_main_charger_v_open(struct inode *inode,
-		struct file *file)
+					    struct file *file)
 {
 	return single_open(file, ab8500_gpadc_main_charger_v_print,
-			inode->i_private);
+		inode->i_private);
 }
 
 static const struct file_operations ab8500_gpadc_main_charger_v_fops = {
@@ -895,19 +1831,20 @@ static int ab8500_gpadc_acc_detect1_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	acc_detect1_raw = ab8500_gpadc_read_raw(gpadc, ACC_DETECT1);
+	acc_detect1_raw = ab8500_gpadc_read_raw(gpadc, ACC_DETECT1,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	acc_detect1_convert = ab8500_gpadc_ad_to_voltage(gpadc, ACC_DETECT1,
-			acc_detect1_raw);
+		acc_detect1_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
-			acc_detect1_convert, acc_detect1_raw);
+		acc_detect1_convert, acc_detect1_raw);
 }
 
 static int ab8500_gpadc_acc_detect1_open(struct inode *inode,
-		struct file *file)
+					 struct file *file)
 {
 	return single_open(file, ab8500_gpadc_acc_detect1_print,
-			inode->i_private);
+		inode->i_private);
 }
 
 static const struct file_operations ab8500_gpadc_acc_detect1_fops = {
@@ -925,19 +1862,20 @@ static int ab8500_gpadc_acc_detect2_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	acc_detect2_raw = ab8500_gpadc_read_raw(gpadc, ACC_DETECT2);
+	acc_detect2_raw = ab8500_gpadc_read_raw(gpadc, ACC_DETECT2,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	acc_detect2_convert = ab8500_gpadc_ad_to_voltage(gpadc,
-	    ACC_DETECT2, acc_detect2_raw);
+		ACC_DETECT2, acc_detect2_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
-			acc_detect2_convert, acc_detect2_raw);
+		acc_detect2_convert, acc_detect2_raw);
 }
 
 static int ab8500_gpadc_acc_detect2_open(struct inode *inode,
 		struct file *file)
 {
 	return single_open(file, ab8500_gpadc_acc_detect2_print,
-	    inode->i_private);
+		inode->i_private);
 }
 
 static const struct file_operations ab8500_gpadc_acc_detect2_fops = {
@@ -955,12 +1893,13 @@ static int ab8500_gpadc_aux1_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	aux1_raw = ab8500_gpadc_read_raw(gpadc, ADC_AUX1);
+	aux1_raw = ab8500_gpadc_read_raw(gpadc, ADC_AUX1,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	aux1_convert = ab8500_gpadc_ad_to_voltage(gpadc, ADC_AUX1,
-			aux1_raw);
+		aux1_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
-			aux1_convert, aux1_raw);
+		aux1_convert, aux1_raw);
 }
 
 static int ab8500_gpadc_aux1_open(struct inode *inode, struct file *file)
@@ -983,9 +1922,10 @@ static int ab8500_gpadc_aux2_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	aux2_raw = ab8500_gpadc_read_raw(gpadc, ADC_AUX2);
+	aux2_raw = ab8500_gpadc_read_raw(gpadc, ADC_AUX2,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	aux2_convert = ab8500_gpadc_ad_to_voltage(gpadc, ADC_AUX2,
-			aux2_raw);
+		aux2_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
 			aux2_convert, aux2_raw);
@@ -1011,16 +1951,17 @@ static int ab8500_gpadc_main_bat_v_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	main_bat_v_raw = ab8500_gpadc_read_raw(gpadc, MAIN_BAT_V);
+	main_bat_v_raw = ab8500_gpadc_read_raw(gpadc, MAIN_BAT_V,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	main_bat_v_convert = ab8500_gpadc_ad_to_voltage(gpadc, MAIN_BAT_V,
-			main_bat_v_raw);
+		main_bat_v_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
-			main_bat_v_convert, main_bat_v_raw);
+		main_bat_v_convert, main_bat_v_raw);
 }
 
 static int ab8500_gpadc_main_bat_v_open(struct inode *inode,
-		struct file *file)
+					struct file *file)
 {
 	return single_open(file, ab8500_gpadc_main_bat_v_print, inode->i_private);
 }
@@ -1040,12 +1981,13 @@ static int ab8500_gpadc_vbus_v_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	vbus_v_raw = ab8500_gpadc_read_raw(gpadc, VBUS_V);
+	vbus_v_raw =  ab8500_gpadc_read_raw(gpadc, VBUS_V,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	vbus_v_convert = ab8500_gpadc_ad_to_voltage(gpadc, VBUS_V,
-			vbus_v_raw);
+		vbus_v_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
-			vbus_v_convert, vbus_v_raw);
+		vbus_v_convert, vbus_v_raw);
 }
 
 static int ab8500_gpadc_vbus_v_open(struct inode *inode, struct file *file)
@@ -1068,19 +2010,20 @@ static int ab8500_gpadc_main_charger_c_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	main_charger_c_raw = ab8500_gpadc_read_raw(gpadc, MAIN_CHARGER_C);
+	main_charger_c_raw = ab8500_gpadc_read_raw(gpadc, MAIN_CHARGER_C,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	main_charger_c_convert = ab8500_gpadc_ad_to_voltage(gpadc,
-			MAIN_CHARGER_C, main_charger_c_raw);
+		MAIN_CHARGER_C, main_charger_c_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
-			main_charger_c_convert, main_charger_c_raw);
+		main_charger_c_convert, main_charger_c_raw);
 }
 
 static int ab8500_gpadc_main_charger_c_open(struct inode *inode,
 		struct file *file)
 {
 	return single_open(file, ab8500_gpadc_main_charger_c_print,
-			inode->i_private);
+		inode->i_private);
 }
 
 static const struct file_operations ab8500_gpadc_main_charger_c_fops = {
@@ -1098,19 +2041,20 @@ static int ab8500_gpadc_usb_charger_c_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	usb_charger_c_raw = ab8500_gpadc_read_raw(gpadc, USB_CHARGER_C);
+	usb_charger_c_raw = ab8500_gpadc_read_raw(gpadc, USB_CHARGER_C,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	usb_charger_c_convert = ab8500_gpadc_ad_to_voltage(gpadc,
-	    USB_CHARGER_C, usb_charger_c_raw);
+		USB_CHARGER_C, usb_charger_c_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
-			usb_charger_c_convert, usb_charger_c_raw);
+		usb_charger_c_convert, usb_charger_c_raw);
 }
 
 static int ab8500_gpadc_usb_charger_c_open(struct inode *inode,
 		struct file *file)
 {
 	return single_open(file, ab8500_gpadc_usb_charger_c_print,
-	    inode->i_private);
+		inode->i_private);
 }
 
 static const struct file_operations ab8500_gpadc_usb_charger_c_fops = {
@@ -1128,12 +2072,13 @@ static int ab8500_gpadc_bk_bat_v_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	bk_bat_v_raw = ab8500_gpadc_read_raw(gpadc, BK_BAT_V);
+	bk_bat_v_raw = ab8500_gpadc_read_raw(gpadc, BK_BAT_V,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	bk_bat_v_convert = ab8500_gpadc_ad_to_voltage(gpadc,
-			BK_BAT_V, bk_bat_v_raw);
+		BK_BAT_V, bk_bat_v_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
-			bk_bat_v_convert, bk_bat_v_raw);
+		bk_bat_v_convert, bk_bat_v_raw);
 }
 
 static int ab8500_gpadc_bk_bat_v_open(struct inode *inode, struct file *file)
@@ -1156,12 +2101,13 @@ static int ab8500_gpadc_die_temp_print(struct seq_file *s, void *p)
 	struct ab8500_gpadc *gpadc;
 
 	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-	die_temp_raw = ab8500_gpadc_read_raw(gpadc, DIE_TEMP);
+	die_temp_raw = ab8500_gpadc_read_raw(gpadc, DIE_TEMP,
+		avg_sample, trig_edge, trig_timer, conv_type);
 	die_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, DIE_TEMP,
-			die_temp_raw);
+		die_temp_raw);
 
 	return seq_printf(s, "%d,0x%X\n",
-			die_temp_convert, die_temp_raw);
+		die_temp_convert, die_temp_raw);
 }
 
 static int ab8500_gpadc_die_temp_open(struct inode *inode, struct file *file)
@@ -1177,6 +2123,453 @@ static const struct file_operations ab8500_gpadc_die_temp_fops = {
 	.owner = THIS_MODULE,
 };
 
+static int ab8500_gpadc_usb_id_print(struct seq_file *s, void *p)
+{
+	int usb_id_raw;
+	int usb_id_convert;
+	struct ab8500_gpadc *gpadc;
+
+	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+	usb_id_raw = ab8500_gpadc_read_raw(gpadc, USB_ID,
+		avg_sample, trig_edge, trig_timer, conv_type);
+	usb_id_convert = ab8500_gpadc_ad_to_voltage(gpadc, USB_ID,
+		usb_id_raw);
+
+	return seq_printf(s, "%d,0x%X\n",
+		usb_id_convert, usb_id_raw);
+}
+
+static int ab8500_gpadc_usb_id_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, ab8500_gpadc_usb_id_print, inode->i_private);
+}
+
+static const struct file_operations ab8500_gpadc_usb_id_fops = {
+	.open = ab8500_gpadc_usb_id_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_xtal_temp_print(struct seq_file *s, void *p)
+{
+	int xtal_temp_raw;
+	int xtal_temp_convert;
+	struct ab8500_gpadc *gpadc;
+
+	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+	xtal_temp_raw = ab8500_gpadc_read_raw(gpadc, XTAL_TEMP,
+		avg_sample, trig_edge, trig_timer, conv_type);
+	xtal_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, XTAL_TEMP,
+		xtal_temp_raw);
+
+	return seq_printf(s, "%d,0x%X\n",
+		xtal_temp_convert, xtal_temp_raw);
+}
+
+static int ab8540_gpadc_xtal_temp_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, ab8540_gpadc_xtal_temp_print,
+		inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_xtal_temp_fops = {
+	.open = ab8540_gpadc_xtal_temp_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_vbat_true_meas_print(struct seq_file *s, void *p)
+{
+	int vbat_true_meas_raw;
+	int vbat_true_meas_convert;
+	struct ab8500_gpadc *gpadc;
+
+	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+	vbat_true_meas_raw = ab8500_gpadc_read_raw(gpadc, VBAT_TRUE_MEAS,
+		avg_sample, trig_edge, trig_timer, conv_type);
+	vbat_true_meas_convert = ab8500_gpadc_ad_to_voltage(gpadc, VBAT_TRUE_MEAS,
+		vbat_true_meas_raw);
+
+	return seq_printf(s, "%d,0x%X\n",
+		vbat_true_meas_convert, vbat_true_meas_raw);
+}
+
+static int ab8540_gpadc_vbat_true_meas_open(struct inode *inode,
+		struct file *file)
+{
+	return single_open(file, ab8540_gpadc_vbat_true_meas_print,
+		inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_vbat_true_meas_fops = {
+	.open = ab8540_gpadc_vbat_true_meas_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_bat_ctrl_and_ibat_print(struct seq_file *s, void *p)
+{
+	int bat_ctrl_raw;
+	int bat_ctrl_convert;
+	int ibat_raw;
+	int ibat_convert;
+	struct ab8500_gpadc *gpadc;
+
+	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+	bat_ctrl_raw = ab8500_gpadc_double_read_raw(gpadc, BAT_CTRL_AND_IBAT,
+		avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
+
+	bat_ctrl_convert = ab8500_gpadc_ad_to_voltage(gpadc, BAT_CTRL,
+		bat_ctrl_raw);
+	ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
+		ibat_raw);
+
+	return seq_printf(s, "%d,0x%X\n"  "%d,0x%X\n",
+		bat_ctrl_convert, bat_ctrl_raw,
+		ibat_convert, ibat_raw);
+}
+
+static int ab8540_gpadc_bat_ctrl_and_ibat_open(struct inode *inode,
+		struct file *file)
+{
+	return single_open(file, ab8540_gpadc_bat_ctrl_and_ibat_print,
+		inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_bat_ctrl_and_ibat_fops = {
+	.open = ab8540_gpadc_bat_ctrl_and_ibat_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_vbat_meas_and_ibat_print(struct seq_file *s, void *p)
+{
+	int vbat_meas_raw;
+	int vbat_meas_convert;
+	int ibat_raw;
+	int ibat_convert;
+	struct ab8500_gpadc *gpadc;
+
+	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+	vbat_meas_raw = ab8500_gpadc_double_read_raw(gpadc, VBAT_MEAS_AND_IBAT,
+		avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
+	vbat_meas_convert = ab8500_gpadc_ad_to_voltage(gpadc, MAIN_BAT_V,
+		vbat_meas_raw);
+	ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
+		ibat_raw);
+
+	return seq_printf(s, "%d,0x%X\n"  "%d,0x%X\n",
+		vbat_meas_convert, vbat_meas_raw,
+		ibat_convert, ibat_raw);
+}
+
+static int ab8540_gpadc_vbat_meas_and_ibat_open(struct inode *inode,
+		struct file *file)
+{
+	return single_open(file, ab8540_gpadc_vbat_meas_and_ibat_print,
+		inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_vbat_meas_and_ibat_fops = {
+	.open = ab8540_gpadc_vbat_meas_and_ibat_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_vbat_true_meas_and_ibat_print(struct seq_file *s, void *p)
+{
+	int vbat_true_meas_raw;
+	int vbat_true_meas_convert;
+	int ibat_raw;
+	int ibat_convert;
+	struct ab8500_gpadc *gpadc;
+
+	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+	vbat_true_meas_raw = ab8500_gpadc_double_read_raw(gpadc,
+			VBAT_TRUE_MEAS_AND_IBAT, avg_sample, trig_edge,
+			trig_timer, conv_type, &ibat_raw);
+	vbat_true_meas_convert = ab8500_gpadc_ad_to_voltage(gpadc,
+			VBAT_TRUE_MEAS, vbat_true_meas_raw);
+	ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
+		ibat_raw);
+
+	return seq_printf(s, "%d,0x%X\n"  "%d,0x%X\n",
+		vbat_true_meas_convert, vbat_true_meas_raw,
+		ibat_convert, ibat_raw);
+}
+
+static int ab8540_gpadc_vbat_true_meas_and_ibat_open(struct inode *inode,
+		struct file *file)
+{
+	return single_open(file, ab8540_gpadc_vbat_true_meas_and_ibat_print,
+		inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_vbat_true_meas_and_ibat_fops = {
+	.open = ab8540_gpadc_vbat_true_meas_and_ibat_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_bat_temp_and_ibat_print(struct seq_file *s, void *p)
+{
+	int bat_temp_raw;
+	int bat_temp_convert;
+	int ibat_raw;
+	int ibat_convert;
+	struct ab8500_gpadc *gpadc;
+
+	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+	bat_temp_raw = ab8500_gpadc_double_read_raw(gpadc, BAT_TEMP_AND_IBAT,
+		avg_sample, trig_edge, trig_timer, conv_type, &ibat_raw);
+	bat_temp_convert = ab8500_gpadc_ad_to_voltage(gpadc, BTEMP_BALL,
+		bat_temp_raw);
+	ibat_convert = ab8500_gpadc_ad_to_voltage(gpadc, IBAT_VIRTUAL_CHANNEL,
+		ibat_raw);
+
+	return seq_printf(s, "%d,0x%X\n"  "%d,0x%X\n",
+		bat_temp_convert, bat_temp_raw,
+		ibat_convert, ibat_raw);
+}
+
+static int ab8540_gpadc_bat_temp_and_ibat_open(struct inode *inode,
+		struct file *file)
+{
+	return single_open(file, ab8540_gpadc_bat_temp_and_ibat_print,
+		inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_bat_temp_and_ibat_fops = {
+	.open = ab8540_gpadc_bat_temp_and_ibat_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ab8540_gpadc_otp_cal_print(struct seq_file *s, void *p)
+{
+	struct ab8500_gpadc *gpadc;
+	u16 vmain_l, vmain_h, btemp_l, btemp_h;
+	u16 vbat_l, vbat_h, ibat_l, ibat_h;
+
+	gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+	ab8540_gpadc_get_otp(gpadc, &vmain_l, &vmain_h, &btemp_l, &btemp_h,
+			&vbat_l, &vbat_h, &ibat_l, &ibat_h);
+	return seq_printf(s, "VMAIN_L:0x%X\n"
+		"VMAIN_H:0x%X\n"
+		"BTEMP_L:0x%X\n"
+		"BTEMP_H:0x%X\n"
+		"VBAT_L:0x%X\n"
+		"VBAT_H:0x%X\n"
+		"IBAT_L:0x%X\n"
+		"IBAT_H:0x%X\n",
+		vmain_l, vmain_h, btemp_l, btemp_h, vbat_l, vbat_h, ibat_l, ibat_h);
+}
+
+static int ab8540_gpadc_otp_cal_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, ab8540_gpadc_otp_cal_print, inode->i_private);
+}
+
+static const struct file_operations ab8540_gpadc_otp_calib_fops = {
+	.open = ab8540_gpadc_otp_cal_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_avg_sample_print(struct seq_file *s, void *p)
+{
+	return seq_printf(s, "%d\n", avg_sample);
+}
+
+static int ab8500_gpadc_avg_sample_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, ab8500_gpadc_avg_sample_print,
+		inode->i_private);
+}
+
+static ssize_t ab8500_gpadc_avg_sample_write(struct file *file,
+	const char __user *user_buf,
+	size_t count, loff_t *ppos)
+{
+	struct device *dev = ((struct seq_file *)(file->private_data))->private;
+	unsigned long user_avg_sample;
+	int err;
+
+	err = kstrtoul_from_user(user_buf, count, 0, &user_avg_sample);
+	if (err)
+		return err;
+
+	if ((user_avg_sample == SAMPLE_1) || (user_avg_sample == SAMPLE_4)
+			|| (user_avg_sample == SAMPLE_8)
+			|| (user_avg_sample == SAMPLE_16)) {
+		avg_sample = (u8) user_avg_sample;
+	} else {
+		dev_err(dev, "debugfs error input: "
+			"should be egal to 1, 4, 8 or 16\n");
+		return -EINVAL;
+	}
+
+	return count;
+}
+
+static const struct file_operations ab8500_gpadc_avg_sample_fops = {
+	.open = ab8500_gpadc_avg_sample_open,
+	.read = seq_read,
+	.write = ab8500_gpadc_avg_sample_write,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_trig_edge_print(struct seq_file *s, void *p)
+{
+	return seq_printf(s, "%d\n", trig_edge);
+}
+
+static int ab8500_gpadc_trig_edge_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, ab8500_gpadc_trig_edge_print,
+		inode->i_private);
+}
+
+static ssize_t ab8500_gpadc_trig_edge_write(struct file *file,
+	const char __user *user_buf,
+	size_t count, loff_t *ppos)
+{
+	struct device *dev = ((struct seq_file *)(file->private_data))->private;
+	unsigned long user_trig_edge;
+	int err;
+
+	err = kstrtoul_from_user(user_buf, count, 0, &user_trig_edge);
+	if (err)
+		return err;
+
+	if ((user_trig_edge == RISING_EDGE)
+			|| (user_trig_edge == FALLING_EDGE)) {
+		trig_edge = (u8) user_trig_edge;
+	} else {
+		dev_err(dev, "Wrong input:\n"
+			"Enter 0. Rising edge\n"
+			"Enter 1. Falling edge\n");
+		return -EINVAL;
+	}
+
+	return count;
+}
+
+static const struct file_operations ab8500_gpadc_trig_edge_fops = {
+	.open = ab8500_gpadc_trig_edge_open,
+	.read = seq_read,
+	.write = ab8500_gpadc_trig_edge_write,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_trig_timer_print(struct seq_file *s, void *p)
+{
+	return seq_printf(s, "%d\n", trig_timer);
+}
+
+static int ab8500_gpadc_trig_timer_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, ab8500_gpadc_trig_timer_print,
+		inode->i_private);
+}
+
+static ssize_t ab8500_gpadc_trig_timer_write(struct file *file,
+	const char __user *user_buf,
+	size_t count, loff_t *ppos)
+{
+	struct device *dev = ((struct seq_file *)(file->private_data))->private;
+	unsigned long user_trig_timer;
+	int err;
+
+	err = kstrtoul_from_user(user_buf, count, 0, &user_trig_timer);
+	if (err)
+		return err;
+
+	if ((user_trig_timer >= 0) && (user_trig_timer <= 255)) {
+		trig_timer = (u8) user_trig_timer;
+	} else {
+		dev_err(dev, "debugfs error input: "
+			"should be beetween 0 to 255\n");
+		return -EINVAL;
+	}
+
+	return count;
+}
+
+static const struct file_operations ab8500_gpadc_trig_timer_fops = {
+	.open = ab8500_gpadc_trig_timer_open,
+	.read = seq_read,
+	.write = ab8500_gpadc_trig_timer_write,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
+static int ab8500_gpadc_conv_type_print(struct seq_file *s, void *p)
+{
+	return seq_printf(s, "%d\n", conv_type);
+}
+
+static int ab8500_gpadc_conv_type_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, ab8500_gpadc_conv_type_print,
+		inode->i_private);
+}
+
+static ssize_t ab8500_gpadc_conv_type_write(struct file *file,
+	const char __user *user_buf,
+	size_t count, loff_t *ppos)
+{
+	struct device *dev = ((struct seq_file *)(file->private_data))->private;
+	unsigned long user_conv_type;
+	int err;
+
+	err = kstrtoul_from_user(user_buf, count, 0, &user_conv_type);
+	if (err)
+		return err;
+
+	if ((user_conv_type == ADC_SW)
+			|| (user_conv_type == ADC_HW)) {
+		conv_type = (u8) user_conv_type;
+	} else {
+		dev_err(dev, "Wrong input:\n"
+			"Enter 0. ADC SW conversion\n"
+			"Enter 1. ADC HW conversion\n");
+		return -EINVAL;
+	}
+
+	return count;
+}
+
+static const struct file_operations ab8500_gpadc_conv_type_fops = {
+	.open = ab8500_gpadc_conv_type_open,
+	.read = seq_read,
+	.write = ab8500_gpadc_conv_type_write,
+	.llseek = seq_lseek,
+	.release = single_release,
+	.owner = THIS_MODULE,
+};
+
 /*
  * return length of an ASCII numerical value, 0 is string is not a
  * numerical value.
@@ -1352,7 +2745,7 @@ static int ab8500_subscribe_unsubscribe_open(struct inode *inode,
 					     struct file *file)
 {
 	return single_open(file, ab8500_subscribe_unsubscribe_print,
-			   inode->i_private);
+		inode->i_private);
 }
 
 /*
@@ -1382,21 +2775,14 @@ static ssize_t ab8500_subscribe_write(struct file *file,
 				      size_t count, loff_t *ppos)
 {
 	struct device *dev = ((struct seq_file *)(file->private_data))->private;
-	char buf[32];
-	int buf_size;
 	unsigned long user_val;
 	int err;
 	unsigned int irq_index;
 
-	/* Get userspace string and assure termination */
-	buf_size = min(count, (sizeof(buf)-1));
-	if (copy_from_user(buf, user_buf, buf_size))
-		return -EFAULT;
-	buf[buf_size] = 0;
-
-	err = strict_strtoul(buf, 0, &user_val);
+	err = kstrtoul_from_user(user_buf, count, 0, &user_val);
 	if (err)
-		return -EINVAL;
+		return err;
+
 	if (user_val < irq_first) {
 		dev_err(dev, "debugfs error input < %d\n", irq_first);
 		return -EINVAL;
@@ -1416,7 +2802,7 @@ static ssize_t ab8500_subscribe_write(struct file *file,
 	 */
 	dev_attr[irq_index] = kmalloc(sizeof(struct device_attribute),
 		GFP_KERNEL);
-	event_name[irq_index] = kmalloc(buf_size, GFP_KERNEL);
+	event_name[irq_index] = kmalloc(count, GFP_KERNEL);
 	sprintf(event_name[irq_index], "%lu", user_val);
 	dev_attr[irq_index]->show = show_irq;
 	dev_attr[irq_index]->store = NULL;
@@ -1438,7 +2824,7 @@ static ssize_t ab8500_subscribe_write(struct file *file,
 		return err;
 	}
 
-	return buf_size;
+	return count;
 }
 
 static ssize_t ab8500_unsubscribe_write(struct file *file,
@@ -1446,21 +2832,14 @@ static ssize_t ab8500_unsubscribe_write(struct file *file,
 					size_t count, loff_t *ppos)
 {
 	struct device *dev = ((struct seq_file *)(file->private_data))->private;
-	char buf[32];
-	int buf_size;
 	unsigned long user_val;
 	int err;
 	unsigned int irq_index;
 
-	/* Get userspace string and assure termination */
-	buf_size = min(count, (sizeof(buf)-1));
-	if (copy_from_user(buf, user_buf, buf_size))
-		return -EFAULT;
-	buf[buf_size] = 0;
-
-	err = strict_strtoul(buf, 0, &user_val);
+	err = kstrtoul_from_user(user_buf, count, 0, &user_val);
 	if (err)
-		return -EINVAL;
+		return err;
+
 	if (user_val < irq_first) {
 		dev_err(dev, "debugfs error input < %d\n", irq_first);
 		return -EINVAL;
@@ -1485,7 +2864,7 @@ static ssize_t ab8500_unsubscribe_write(struct file *file,
 	kfree(event_name[irq_index]);
 	kfree(dev_attr[irq_index]);
 
-	return buf_size;
+	return count;
 }
 
 /*
@@ -1583,7 +2962,7 @@ static int ab8500_debug_probe(struct platform_device *plf)
 	irq_first = platform_get_irq_byname(plf, "IRQ_FIRST");
 	if (irq_first < 0) {
 		dev_err(&plf->dev, "First irq not found, err %d\n",
-				irq_first);
+			irq_first);
 		ret = irq_first;
 		goto out_freeevent_name;
 	}
@@ -1591,9 +2970,9 @@ static int ab8500_debug_probe(struct platform_device *plf)
 	irq_last = platform_get_irq_byname(plf, "IRQ_LAST");
 	if (irq_last < 0) {
 		dev_err(&plf->dev, "Last irq not found, err %d\n",
-				irq_last);
+			irq_last);
 		ret = irq_last;
-                goto out_freeevent_name;
+		goto out_freeevent_name;
 	}
 
 	ab8500_dir = debugfs_create_dir(AB8500_NAME_STRING, NULL);
@@ -1601,124 +2980,198 @@ static int ab8500_debug_probe(struct platform_device *plf)
 		goto err;
 
 	ab8500_gpadc_dir = debugfs_create_dir(AB8500_ADC_NAME_STRING,
-	    ab8500_dir);
+		ab8500_dir);
 	if (!ab8500_gpadc_dir)
 		goto err;
 
 	file = debugfs_create_file("all-bank-registers", S_IRUGO,
-	    ab8500_dir, &plf->dev, &ab8500_registers_fops);
+		ab8500_dir, &plf->dev, &ab8500_registers_fops);
 	if (!file)
 		goto err;
 
 	file = debugfs_create_file("all-banks", S_IRUGO,
-	    ab8500_dir, &plf->dev, &ab8500_all_banks_fops);
+		ab8500_dir, &plf->dev, &ab8500_all_banks_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("register-bank", (S_IRUGO | S_IWUSR),
-	    ab8500_dir, &plf->dev, &ab8500_bank_fops);
+	file = debugfs_create_file("register-bank", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_dir, &plf->dev, &ab8500_bank_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("register-address", (S_IRUGO | S_IWUSR),
-	    ab8500_dir, &plf->dev, &ab8500_address_fops);
+	file = debugfs_create_file("register-address", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_dir, &plf->dev, &ab8500_address_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("register-value", (S_IRUGO | S_IWUSR),
-	    ab8500_dir, &plf->dev, &ab8500_val_fops);
+	file = debugfs_create_file("register-value", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_dir, &plf->dev, &ab8500_val_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("irq-subscribe", (S_IRUGO | S_IWUSR),
-	    ab8500_dir, &plf->dev, &ab8500_subscribe_fops);
+	file = debugfs_create_file("irq-subscribe", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_dir, &plf->dev, &ab8500_subscribe_fops);
 	if (!file)
 		goto err;
 
-	if (is_ab8500(ab8500))
+	if (is_ab8500(ab8500)) {
+		debug_ranges = ab8500_debug_ranges;
 		num_interrupt_lines = AB8500_NR_IRQS;
-	else if (is_ab8505(ab8500))
+	} else if (is_ab8505(ab8500)) {
+		debug_ranges = ab8505_debug_ranges;
 		num_interrupt_lines = AB8505_NR_IRQS;
-	else if (is_ab9540(ab8500))
+	} else if (is_ab9540(ab8500)) {
+		debug_ranges = ab8505_debug_ranges;
 		num_interrupt_lines = AB9540_NR_IRQS;
+	} else if (is_ab8540(ab8500)) {
+		debug_ranges = ab8540_debug_ranges;
+		num_interrupt_lines = AB8540_NR_IRQS;
+	}
 
 	file = debugfs_create_file("interrupts", (S_IRUGO),
-	    ab8500_dir, &plf->dev, &ab8500_interrupts_fops);
+		ab8500_dir, &plf->dev, &ab8500_interrupts_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("irq-unsubscribe", (S_IRUGO | S_IWUSR),
-	    ab8500_dir, &plf->dev, &ab8500_unsubscribe_fops);
+	file = debugfs_create_file("irq-unsubscribe", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_dir, &plf->dev, &ab8500_unsubscribe_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("hwreg", (S_IRUGO | S_IWUSR),
-	    ab8500_dir, &plf->dev, &ab8500_hwreg_fops);
+	file = debugfs_create_file("hwreg", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_dir, &plf->dev, &ab8500_hwreg_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("bat_ctrl", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_bat_ctrl_fops);
+	file = debugfs_create_file("all-modem-registers", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_dir, &plf->dev, &ab8500_modem_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("btemp_ball", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_btemp_ball_fops);
+	file = debugfs_create_file("bat_ctrl", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_bat_ctrl_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("main_charger_v", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_main_charger_v_fops);
+	file = debugfs_create_file("btemp_ball", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_btemp_ball_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("acc_detect1", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_acc_detect1_fops);
+	file = debugfs_create_file("main_charger_v", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_main_charger_v_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("acc_detect2", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_acc_detect2_fops);
+	file = debugfs_create_file("acc_detect1", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_acc_detect1_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("adc_aux1", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_aux1_fops);
+	file = debugfs_create_file("acc_detect2", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_acc_detect2_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("adc_aux2", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_aux2_fops);
+	file = debugfs_create_file("adc_aux1", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_aux1_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("main_bat_v", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_main_bat_v_fops);
+	file = debugfs_create_file("adc_aux2", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_aux2_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("vbus_v", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_vbus_v_fops);
+	file = debugfs_create_file("main_bat_v", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_main_bat_v_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("main_charger_c", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_main_charger_c_fops);
+	file = debugfs_create_file("vbus_v", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_vbus_v_fops);
+	if (!file)
+		goto err;
+
+	file = debugfs_create_file("main_charger_c", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_main_charger_c_fops);
+	if (!file)
+		goto err;
+
+	file = debugfs_create_file("usb_charger_c", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_usb_charger_c_fops);
+	if (!file)
+		goto err;
+
+	file = debugfs_create_file("bk_bat_v", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_bk_bat_v_fops);
+	if (!file)
+		goto err;
+
+	file = debugfs_create_file("die_temp", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_die_temp_fops);
+	if (!file)
+		goto err;
+
+	file = debugfs_create_file("usb_id", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_usb_id_fops);
+	if (!file)
+		goto err;
+
+	if (is_ab8540(ab8500)) {
+		file = debugfs_create_file("xtal_temp", (S_IRUGO | S_IWUSR | S_IWGRP),
+			ab8500_gpadc_dir, &plf->dev, &ab8540_gpadc_xtal_temp_fops);
+		if (!file)
+			goto err;
+		file = debugfs_create_file("vbattruemeas", (S_IRUGO | S_IWUSR | S_IWGRP),
+			ab8500_gpadc_dir, &plf->dev,
+			&ab8540_gpadc_vbat_true_meas_fops);
+		if (!file)
+			goto err;
+		file = debugfs_create_file("batctrl_and_ibat",
+			(S_IRUGO | S_IWUGO), ab8500_gpadc_dir,
+			&plf->dev, &ab8540_gpadc_bat_ctrl_and_ibat_fops);
+		if (!file)
+			goto err;
+		file = debugfs_create_file("vbatmeas_and_ibat",
+			(S_IRUGO | S_IWUGO), ab8500_gpadc_dir,
+			&plf->dev,
+			&ab8540_gpadc_vbat_meas_and_ibat_fops);
+		if (!file)
+			goto err;
+		file = debugfs_create_file("vbattruemeas_and_ibat",
+			(S_IRUGO | S_IWUGO), ab8500_gpadc_dir,
+			&plf->dev,
+			&ab8540_gpadc_vbat_true_meas_and_ibat_fops);
+		if (!file)
+			goto err;
+		file = debugfs_create_file("battemp_and_ibat",
+			(S_IRUGO | S_IWUGO), ab8500_gpadc_dir,
+			&plf->dev, &ab8540_gpadc_bat_temp_and_ibat_fops);
+		if (!file)
+			goto err;
+		file = debugfs_create_file("otp_calib", (S_IRUGO | S_IWUSR | S_IWGRP),
+			ab8500_gpadc_dir, &plf->dev, &ab8540_gpadc_otp_calib_fops);
+		if (!file)
+			goto err;
+	}
+	file = debugfs_create_file("avg_sample", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_avg_sample_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("usb_charger_c", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_usb_charger_c_fops);
+	file = debugfs_create_file("trig_edge", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_trig_edge_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("bk_bat_v", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_bk_bat_v_fops);
+	file = debugfs_create_file("trig_timer", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_trig_timer_fops);
 	if (!file)
 		goto err;
 
-	file = debugfs_create_file("die_temp", (S_IRUGO | S_IWUSR),
-	    ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_die_temp_fops);
+	file = debugfs_create_file("conv_type", (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8500_gpadc_dir, &plf->dev, &ab8500_gpadc_conv_type_fops);
 	if (!file)
 		goto err;
 
diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c
index 5f341a50ee5a..65f72284185d 100644
--- a/drivers/mfd/ab8500-gpadc.c
+++ b/drivers/mfd/ab8500-gpadc.c
@@ -37,6 +37,13 @@
 #define AB8500_GPADC_AUTODATAL_REG	0x07
 #define AB8500_GPADC_AUTODATAH_REG	0x08
 #define AB8500_GPADC_MUX_CTRL_REG	0x09
+#define AB8540_GPADC_MANDATA2L_REG	0x09
+#define AB8540_GPADC_MANDATA2H_REG	0x0A
+#define AB8540_GPADC_APEAAX_REG		0x10
+#define AB8540_GPADC_APEAAT_REG		0x11
+#define AB8540_GPADC_APEAAM_REG		0x12
+#define AB8540_GPADC_APEAAH_REG		0x13
+#define AB8540_GPADC_APEAAL_REG		0x14
 
 /*
  * OTP register offsets
@@ -49,19 +56,29 @@
 #define AB8500_GPADC_CAL_5		0x13
 #define AB8500_GPADC_CAL_6		0x14
 #define AB8500_GPADC_CAL_7		0x15
+/* New calibration for 8540 */
+#define AB8540_GPADC_OTP4_REG_7	0x38
+#define AB8540_GPADC_OTP4_REG_6	0x39
+#define AB8540_GPADC_OTP4_REG_5	0x3A
 
 /* gpadc constants */
 #define EN_VINTCORE12			0x04
 #define EN_VTVOUT			0x02
 #define EN_GPADC			0x01
 #define DIS_GPADC			0x00
-#define SW_AVG_16			0x60
+#define AVG_1				0x00
+#define AVG_4				0x20
+#define AVG_8				0x40
+#define AVG_16				0x60
 #define ADC_SW_CONV			0x04
 #define EN_ICHAR			0x80
 #define BTEMP_PULL_UP			0x08
 #define EN_BUF				0x40
 #define DIS_ZERO			0x00
 #define GPADC_BUSY			0x01
+#define EN_FALLING			0x10
+#define EN_TRIG_EDGE			0x02
+#define EN_VBIAS_XTAL_TEMP		0x02
 
 /* GPADC constants from AB8500 spec, UM0836 */
 #define ADC_RESOLUTION			1024
@@ -80,8 +97,21 @@
 #define ADC_CH_BKBAT_MIN		0
 #define ADC_CH_BKBAT_MAX		3200
 
+/* GPADC constants from AB8540 spec */
+#define ADC_CH_IBAT_MIN			(-6000) /* mA range measured by ADC for ibat*/
+#define ADC_CH_IBAT_MAX			6000
+#define ADC_CH_IBAT_MIN_V		(-60)	/* mV range measured by ADC for ibat*/
+#define ADC_CH_IBAT_MAX_V		60
+#define IBAT_VDROP_L			(-56)  /* mV */
+#define IBAT_VDROP_H			56
+
 /* This is used to not lose precision when dividing to get gain and offset */
-#define CALIB_SCALE			1000
+#define CALIB_SCALE		1000
+/*
+ * Number of bits shift used to not lose precision
+ * when dividing to get ibat gain.
+ */
+#define CALIB_SHIFT_IBAT	20
 
 /* Time in ms before disabling regulator */
 #define GPADC_AUDOSUSPEND_DELAY		1
@@ -92,6 +122,7 @@ enum cal_channels {
 	ADC_INPUT_VMAIN = 0,
 	ADC_INPUT_BTEMP,
 	ADC_INPUT_VBAT,
+	ADC_INPUT_IBAT,
 	NBR_CAL_INPUTS,
 };
 
@@ -102,8 +133,10 @@ enum cal_channels {
  * @offset:		Offset of the ADC channel
  */
 struct adc_cal_data {
-	u64 gain;
-	u64 offset;
+	s64 gain;
+	s64 offset;
+	u16 otp_calib_hi;
+	u16 otp_calib_lo;
 };
 
 /**
@@ -116,7 +149,10 @@ struct adc_cal_data {
  *				the completion of gpadc conversion
  * @ab8500_gpadc_lock:		structure of type mutex
  * @regu:			pointer to the struct regulator
- * @irq:			interrupt number that is used by gpadc
+ * @irq_sw:			interrupt number that is used by gpadc for Sw
+ *				conversion
+ * @irq_hw:			interrupt number that is used by gpadc for Hw
+ *				conversion
  * @cal_data			array of ADC calibration data structs
  */
 struct ab8500_gpadc {
@@ -126,7 +162,8 @@ struct ab8500_gpadc {
 	struct completion ab8500_gpadc_complete;
 	struct mutex ab8500_gpadc_lock;
 	struct regulator *regu;
-	int irq;
+	int irq_sw;
+	int irq_hw;
 	struct adc_cal_data cal_data[NBR_CAL_INPUTS];
 };
 
@@ -171,6 +208,7 @@ int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc, u8 channel,
 			gpadc->cal_data[ADC_INPUT_VMAIN].offset) / CALIB_SCALE;
 		break;
 
+	case XTAL_TEMP:
 	case BAT_CTRL:
 	case BTEMP_BALL:
 	case ACC_DETECT1:
@@ -189,6 +227,7 @@ int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc, u8 channel,
 		break;
 
 	case MAIN_BAT_V:
+	case VBAT_TRUE_MEAS:
 		/* For some reason we don't have calibrated data */
 		if (!gpadc->cal_data[ADC_INPUT_VBAT].gain) {
 			res = ADC_CH_VBAT_MIN + (ADC_CH_VBAT_MAX -
@@ -232,6 +271,20 @@ int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc, u8 channel,
 			ADC_RESOLUTION;
 		break;
 
+	case IBAT_VIRTUAL_CHANNEL:
+		/* For some reason we don't have calibrated data */
+		if (!gpadc->cal_data[ADC_INPUT_IBAT].gain) {
+			res = ADC_CH_IBAT_MIN + (ADC_CH_IBAT_MAX -
+				ADC_CH_IBAT_MIN) * ad_value /
+				ADC_RESOLUTION;
+			break;
+		}
+		/* Here we can use the calibrated data */
+		res = (int) (ad_value * gpadc->cal_data[ADC_INPUT_IBAT].gain +
+				gpadc->cal_data[ADC_INPUT_IBAT].offset)
+				>> CALIB_SHIFT_IBAT;
+		break;
+
 	default:
 		dev_err(gpadc->dev,
 			"unknown channel, not possible to convert\n");
@@ -244,25 +297,35 @@ int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc, u8 channel,
 EXPORT_SYMBOL(ab8500_gpadc_ad_to_voltage);
 
 /**
- * ab8500_gpadc_convert() - gpadc conversion
+ * ab8500_gpadc_sw_hw_convert() - gpadc conversion
  * @channel:	analog channel to be converted to digital data
+ * @avg_sample:  number of ADC sample to average
+ * @trig_egde:  selected ADC trig edge
+ * @trig_timer: selected ADC trigger delay timer
+ * @conv_type: selected conversion type (HW or SW conversion)
  *
  * This function converts the selected analog i/p to digital
  * data.
  */
-int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 channel)
+int ab8500_gpadc_sw_hw_convert(struct ab8500_gpadc *gpadc, u8 channel,
+		u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type)
 {
 	int ad_value;
 	int voltage;
 
-	ad_value = ab8500_gpadc_read_raw(gpadc, channel);
-	if (ad_value < 0) {
-		dev_err(gpadc->dev, "GPADC raw value failed ch: %d\n", channel);
+	ad_value = ab8500_gpadc_read_raw(gpadc, channel, avg_sample,
+			trig_edge, trig_timer, conv_type);
+/* On failure retry a second time */
+	if (ad_value < 0)
+		ad_value = ab8500_gpadc_read_raw(gpadc, channel, avg_sample,
+			trig_edge, trig_timer, conv_type);
+if (ad_value < 0) {
+		dev_err(gpadc->dev, "GPADC raw value failed ch: %d\n",
+				channel);
 		return ad_value;
 	}
 
 	voltage = ab8500_gpadc_ad_to_voltage(gpadc, channel, ad_value);
-
 	if (voltage < 0)
 		dev_err(gpadc->dev, "GPADC to voltage conversion failed ch:"
 			" %d AD: 0x%x\n", channel, ad_value);
@@ -274,21 +337,46 @@ EXPORT_SYMBOL(ab8500_gpadc_convert);
 /**
  * ab8500_gpadc_read_raw() - gpadc read
  * @channel:	analog channel to be read
+ * @avg_sample:  number of ADC sample to average
+ * @trig_edge:  selected trig edge
+ * @trig_timer: selected ADC trigger delay timer
+ * @conv_type: selected conversion type (HW or SW conversion)
  *
- * This function obtains the raw ADC value, this then needs
- * to be converted by calling ab8500_gpadc_ad_to_voltage()
+ * This function obtains the raw ADC value for an hardware conversion,
+ * this then needs to be converted by calling ab8500_gpadc_ad_to_voltage()
  */
-int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel)
+int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
+		u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type)
+{
+	int raw_data;
+	raw_data = ab8500_gpadc_double_read_raw(gpadc, channel,
+			avg_sample, trig_edge, trig_timer, conv_type, NULL);
+	return raw_data;
+}
+
+int ab8500_gpadc_double_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
+		u8 avg_sample, u8 trig_edge, u8 trig_timer, u8 conv_type,
+		int *ibat)
 {
 	int ret;
 	int looplimit = 0;
-	u8 val, low_data, high_data;
+	unsigned long completion_timeout;
+	u8 val, low_data, high_data, low_data2, high_data2;
+	u8 val_reg1 = 0;
+	unsigned int delay_min = 0;
+	unsigned int delay_max = 0;
+	u8 data_low_addr, data_high_addr;
 
 	if (!gpadc)
 		return -ENODEV;
 
-	mutex_lock(&gpadc->ab8500_gpadc_lock);
+	/* check if convertion is supported */
+	if ((gpadc->irq_sw < 0) && (conv_type == ADC_SW))
+		return -ENOTSUPP;
+	if ((gpadc->irq_hw < 0) && (conv_type == ADC_HW))
+		return -ENOTSUPP;
 
+	mutex_lock(&gpadc->ab8500_gpadc_lock);
 	/* Enable VTVout LDO this is required for GPADC */
 	pm_runtime_get_sync(gpadc->dev);
 
@@ -309,16 +397,34 @@ int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel)
 	}
 
 	/* Enable GPADC */
-	ret = abx500_mask_and_set_register_interruptible(gpadc->dev,
-		AB8500_GPADC, AB8500_GPADC_CTRL1_REG, EN_GPADC, EN_GPADC);
-	if (ret < 0) {
-		dev_err(gpadc->dev, "gpadc_conversion: enable gpadc failed\n");
-		goto out;
+	val_reg1 |= EN_GPADC;
+
+	/* Select the channel source and set average samples */
+	switch (avg_sample) {
+	case SAMPLE_1:
+		val = channel | AVG_1;
+		break;
+	case SAMPLE_4:
+		val = channel | AVG_4;
+		break;
+	case SAMPLE_8:
+		val = channel | AVG_8;
+		break;
+	default:
+		val = channel | AVG_16;
+		break;
 	}
 
-	/* Select the channel source and set average samples to 16 */
-	ret = abx500_set_register_interruptible(gpadc->dev, AB8500_GPADC,
-		AB8500_GPADC_CTRL2_REG, (channel | SW_AVG_16));
+	if (conv_type == ADC_HW) {
+		ret = abx500_set_register_interruptible(gpadc->dev,
+				AB8500_GPADC, AB8500_GPADC_CTRL3_REG, val);
+		val_reg1 |= EN_TRIG_EDGE;
+		if (trig_edge)
+			val_reg1 |= EN_FALLING;
+	}
+	else
+		ret = abx500_set_register_interruptible(gpadc->dev,
+				AB8500_GPADC, AB8500_GPADC_CTRL2_REG, val);
 	if (ret < 0) {
 		dev_err(gpadc->dev,
 			"gpadc_conversion: set avg samples failed\n");
@@ -333,71 +439,129 @@ int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel)
 	switch (channel) {
 	case MAIN_CHARGER_C:
 	case USB_CHARGER_C:
-		ret = abx500_mask_and_set_register_interruptible(gpadc->dev,
-			AB8500_GPADC, AB8500_GPADC_CTRL1_REG,
-			EN_BUF | EN_ICHAR,
-			EN_BUF | EN_ICHAR);
+		val_reg1 |= EN_BUF | EN_ICHAR;
 		break;
 	case BTEMP_BALL:
 		if (!is_ab8500_2p0_or_earlier(gpadc->parent)) {
-			/* Turn on btemp pull-up on ABB 3.0 */
-			ret = abx500_mask_and_set_register_interruptible(
-				gpadc->dev,
-				AB8500_GPADC, AB8500_GPADC_CTRL1_REG,
-				EN_BUF | BTEMP_PULL_UP,
-				EN_BUF | BTEMP_PULL_UP);
-
-		 /*
-		  * Delay might be needed for ABB8500 cut 3.0, if not, remove
-		  * when hardware will be available
-		  */
-			usleep_range(1000, 1000);
+			val_reg1 |= EN_BUF | BTEMP_PULL_UP;
+			/*
+			* Delay might be needed for ABB8500 cut 3.0, if not,
+			* remove when hardware will be availible
+			*/
+			delay_min = 1000; /* Delay in micro seconds */
+			delay_max = 10000; /* large range to optimise sleep mode */
 			break;
 		}
 		/* Intentional fallthrough */
 	default:
-		ret = abx500_mask_and_set_register_interruptible(gpadc->dev,
-			AB8500_GPADC, AB8500_GPADC_CTRL1_REG, EN_BUF, EN_BUF);
+		val_reg1 |= EN_BUF;
 		break;
 	}
+
+	/* Write configuration to register */
+	ret = abx500_set_register_interruptible(gpadc->dev,
+		AB8500_GPADC, AB8500_GPADC_CTRL1_REG, val_reg1);
 	if (ret < 0) {
 		dev_err(gpadc->dev,
-			"gpadc_conversion: select falling edge failed\n");
+			"gpadc_conversion: set Control register failed\n");
 		goto out;
 	}
 
-	ret = abx500_mask_and_set_register_interruptible(gpadc->dev,
-		AB8500_GPADC, AB8500_GPADC_CTRL1_REG, ADC_SW_CONV, ADC_SW_CONV);
-	if (ret < 0) {
-		dev_err(gpadc->dev,
-			"gpadc_conversion: start s/w conversion failed\n");
-		goto out;
+	if (delay_min != 0)
+		usleep_range(delay_min, delay_max);
+
+	if (conv_type == ADC_HW) {
+		/* Set trigger delay timer */
+		ret = abx500_set_register_interruptible(gpadc->dev,
+			AB8500_GPADC, AB8500_GPADC_AUTO_TIMER_REG, trig_timer);
+		if (ret < 0) {
+			dev_err(gpadc->dev,
+				"gpadc_conversion: trig timer failed\n");
+			goto out;
+		}
+		completion_timeout = 2 * HZ;
+		data_low_addr = AB8500_GPADC_AUTODATAL_REG;
+		data_high_addr = AB8500_GPADC_AUTODATAH_REG;
+	} else {
+		/* Start SW conversion */
+		ret = abx500_mask_and_set_register_interruptible(gpadc->dev,
+			AB8500_GPADC, AB8500_GPADC_CTRL1_REG,
+			ADC_SW_CONV, ADC_SW_CONV);
+		if (ret < 0) {
+			dev_err(gpadc->dev,
+				"gpadc_conversion: start s/w conv failed\n");
+			goto out;
+		}
+		completion_timeout = msecs_to_jiffies(CONVERSION_TIME);
+		data_low_addr = AB8500_GPADC_MANDATAL_REG;
+		data_high_addr = AB8500_GPADC_MANDATAH_REG;
 	}
+
 	/* wait for completion of conversion */
 	if (!wait_for_completion_timeout(&gpadc->ab8500_gpadc_complete,
-					 msecs_to_jiffies(CONVERSION_TIME))) {
+			completion_timeout)) {
 		dev_err(gpadc->dev,
-			"timeout: didn't receive GPADC conversion interrupt\n");
+			"timeout didn't receive GPADC conv interrupt\n");
 		ret = -EINVAL;
 		goto out;
 	}
 
 	/* Read the converted RAW data */
-	ret = abx500_get_register_interruptible(gpadc->dev, AB8500_GPADC,
-		AB8500_GPADC_MANDATAL_REG, &low_data);
+	ret = abx500_get_register_interruptible(gpadc->dev,
+			AB8500_GPADC, data_low_addr, &low_data);
 	if (ret < 0) {
 		dev_err(gpadc->dev, "gpadc_conversion: read low data failed\n");
 		goto out;
 	}
 
-	ret = abx500_get_register_interruptible(gpadc->dev, AB8500_GPADC,
-		AB8500_GPADC_MANDATAH_REG, &high_data);
+	ret = abx500_get_register_interruptible(gpadc->dev,
+		AB8500_GPADC, data_high_addr, &high_data);
 	if (ret < 0) {
-		dev_err(gpadc->dev,
-			"gpadc_conversion: read high data failed\n");
+		dev_err(gpadc->dev, "gpadc_conversion: read high data failed\n");
 		goto out;
 	}
 
+	/* Check if double convertion is required */
+	if ((channel == BAT_CTRL_AND_IBAT) ||
+			(channel == VBAT_MEAS_AND_IBAT) ||
+			(channel == VBAT_TRUE_MEAS_AND_IBAT) ||
+			(channel == BAT_TEMP_AND_IBAT)) {
+
+		if (conv_type == ADC_HW) {
+			/* not supported */
+			ret = -ENOTSUPP;
+			dev_err(gpadc->dev,
+				"gpadc_conversion: only SW double conversion supported\n");
+			goto out;
+		} else {
+			/* Read the converted RAW data 2 */
+			ret = abx500_get_register_interruptible(gpadc->dev,
+				AB8500_GPADC, AB8540_GPADC_MANDATA2L_REG,
+				&low_data2);
+			if (ret < 0) {
+				dev_err(gpadc->dev,
+					"gpadc_conversion: read sw low data 2 failed\n");
+				goto out;
+			}
+
+			ret = abx500_get_register_interruptible(gpadc->dev,
+				AB8500_GPADC, AB8540_GPADC_MANDATA2H_REG,
+				&high_data2);
+			if (ret < 0) {
+				dev_err(gpadc->dev,
+					"gpadc_conversion: read sw high data 2 failed\n");
+				goto out;
+			}
+			if (ibat != NULL) {
+				*ibat = (high_data2 << 8) | low_data2;
+			} else {
+				dev_warn(gpadc->dev,
+					"gpadc_conversion: ibat not stored\n");
+			}
+
+		}
+	}
+
 	/* Disable GPADC */
 	ret = abx500_set_register_interruptible(gpadc->dev, AB8500_GPADC,
 		AB8500_GPADC_CTRL1_REG, DIS_GPADC);
@@ -406,6 +570,7 @@ int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel)
 		goto out;
 	}
 
+	/* Disable VTVout LDO this is required for GPADC */
 	pm_runtime_mark_last_busy(gpadc->dev);
 	pm_runtime_put_autosuspend(gpadc->dev);
 
@@ -422,9 +587,7 @@ out:
 	 */
 	(void) abx500_set_register_interruptible(gpadc->dev, AB8500_GPADC,
 		AB8500_GPADC_CTRL1_REG, DIS_GPADC);
-
 	pm_runtime_put(gpadc->dev);
-
 	mutex_unlock(&gpadc->ab8500_gpadc_lock);
 	dev_err(gpadc->dev,
 		"gpadc_conversion: Failed to AD convert channel %d\n", channel);
@@ -433,16 +596,16 @@ out:
 EXPORT_SYMBOL(ab8500_gpadc_read_raw);
 
 /**
- * ab8500_bm_gpswadcconvend_handler() - isr for s/w gpadc conversion completion
+ * ab8500_bm_gpadcconvend_handler() - isr for gpadc conversion completion
  * @irq:	irq number
  * @data:	pointer to the data passed during request irq
  *
- * This is a interrupt service routine for s/w gpadc conversion completion.
+ * This is a interrupt service routine for gpadc conversion completion.
  * Notifies the gpadc completion is completed and the converted raw value
  * can be read from the registers.
  * Returns IRQ status(IRQ_HANDLED)
  */
-static irqreturn_t ab8500_bm_gpswadcconvend_handler(int irq, void *_gpadc)
+static irqreturn_t ab8500_bm_gpadcconvend_handler(int irq, void *_gpadc)
 {
 	struct ab8500_gpadc *gpadc = _gpadc;
 
@@ -461,15 +624,27 @@ static int otp_cal_regs[] = {
 	AB8500_GPADC_CAL_7,
 };
 
+static int otp4_cal_regs[] = {
+	AB8540_GPADC_OTP4_REG_7,
+	AB8540_GPADC_OTP4_REG_6,
+	AB8540_GPADC_OTP4_REG_5,
+};
+
 static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
 {
 	int i;
 	int ret[ARRAY_SIZE(otp_cal_regs)];
 	u8 gpadc_cal[ARRAY_SIZE(otp_cal_regs)];
-
+	int ret_otp4[ARRAY_SIZE(otp4_cal_regs)];
+	u8 gpadc_otp4[ARRAY_SIZE(otp4_cal_regs)];
 	int vmain_high, vmain_low;
 	int btemp_high, btemp_low;
 	int vbat_high, vbat_low;
+	int ibat_high, ibat_low;
+	s64 V_gain, V_offset, V2A_gain, V2A_offset;
+	struct ab8500 *ab8500;
+
+	ab8500 = gpadc->parent;
 
 	/* First we read all OTP registers and store the error code */
 	for (i = 0; i < ARRAY_SIZE(otp_cal_regs); i++) {
@@ -489,7 +664,7 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
 	 * bt_h/l = btemp_high/low
 	 * vb_h/l = vbat_high/low
 	 *
-	 * Data bits:
+	 * Data bits 8500/9540:
 	 * | 7	   | 6	   | 5	   | 4	   | 3	   | 2	   | 1	   | 0
 	 * |.......|.......|.......|.......|.......|.......|.......|.......
 	 * |						   | vm_h9 | vm_h8
@@ -507,6 +682,35 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
 	 * | vb_l5 | vb_l4 | vb_l3 | vb_l2 | vb_l1 | vb_l0 |
 	 * |.......|.......|.......|.......|.......|.......|.......|.......
 	 *
+	 * Data bits 8540:
+	 * OTP2
+	 * | 7	   | 6	   | 5	   | 4	   | 3	   | 2	   | 1	   | 0
+	 * |.......|.......|.......|.......|.......|.......|.......|.......
+	 * |
+	 * |.......|.......|.......|.......|.......|.......|.......|.......
+	 * | vm_h9 | vm_h8 | vm_h7 | vm_h6 | vm_h5 | vm_h4 | vm_h3 | vm_h2
+	 * |.......|.......|.......|.......|.......|.......|.......|.......
+	 * | vm_h1 | vm_h0 | vm_l4 | vm_l3 | vm_l2 | vm_l1 | vm_l0 | bt_h9
+	 * |.......|.......|.......|.......|.......|.......|.......|.......
+	 * | bt_h8 | bt_h7 | bt_h6 | bt_h5 | bt_h4 | bt_h3 | bt_h2 | bt_h1
+	 * |.......|.......|.......|.......|.......|.......|.......|.......
+	 * | bt_h0 | bt_l4 | bt_l3 | bt_l2 | bt_l1 | bt_l0 | vb_h9 | vb_h8
+	 * |.......|.......|.......|.......|.......|.......|.......|.......
+	 * | vb_h7 | vb_h6 | vb_h5 | vb_h4 | vb_h3 | vb_h2 | vb_h1 | vb_h0
+	 * |.......|.......|.......|.......|.......|.......|.......|.......
+	 * | vb_l5 | vb_l4 | vb_l3 | vb_l2 | vb_l1 | vb_l0 |
+	 * |.......|.......|.......|.......|.......|.......|.......|.......
+	 *
+	 * Data bits 8540:
+	 * OTP4
+	 * | 7	   | 6	   | 5	   | 4	   | 3	   | 2	   | 1	   | 0
+	 * |.......|.......|.......|.......|.......|.......|.......|.......
+	 * |					   | ib_h9 | ib_h8 | ib_h7
+	 * |.......|.......|.......|.......|.......|.......|.......|.......
+	 * | ib_h6 | ib_h5 | ib_h4 | ib_h3 | ib_h2 | ib_h1 | ib_h0 | ib_l5
+	 * |.......|.......|.......|.......|.......|.......|.......|.......
+	 * | ib_l4 | ib_l3 | ib_l2 | ib_l1 | ib_l0 |
+	 *
 	 *
 	 * Ideal output ADC codes corresponding to injected input voltages
 	 * during manufacturing is:
@@ -519,38 +723,116 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
 	 * vbat_low:   Vin = 2380mV  / ADC ideal code = 33
 	 */
 
-	/* Calculate gain and offset for VMAIN if all reads succeeded */
-	if (!(ret[0] < 0 || ret[1] < 0 || ret[2] < 0)) {
-		vmain_high = (((gpadc_cal[0] & 0x03) << 8) |
-			((gpadc_cal[1] & 0x3F) << 2) |
-			((gpadc_cal[2] & 0xC0) >> 6));
+	if (is_ab8540(ab8500)) {
+		/* Calculate gain and offset for VMAIN if all reads succeeded*/
+		if (!(ret[1] < 0 || ret[2] < 0)) {
+			vmain_high = (((gpadc_cal[1] & 0xFF) << 2) |
+				((gpadc_cal[2] & 0xC0) >> 6));
+			vmain_low = ((gpadc_cal[2] & 0x3E) >> 1);
+
+			gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi =
+				(u16)vmain_high;
+			gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo =
+				(u16)vmain_low;
+
+			gpadc->cal_data[ADC_INPUT_VMAIN].gain = CALIB_SCALE *
+				(19500 - 315) / (vmain_high - vmain_low);
+			gpadc->cal_data[ADC_INPUT_VMAIN].offset = CALIB_SCALE *
+				19500 - (CALIB_SCALE * (19500 - 315) /
+				(vmain_high - vmain_low)) * vmain_high;
+		} else {
+		gpadc->cal_data[ADC_INPUT_VMAIN].gain = 0;
+		}
 
-		vmain_low = ((gpadc_cal[2] & 0x3E) >> 1);
+		/* Read IBAT calibration Data */
+		for (i = 0; i < ARRAY_SIZE(otp4_cal_regs); i++) {
+			ret_otp4[i] = abx500_get_register_interruptible(
+					gpadc->dev, AB8500_OTP_EMUL,
+					otp4_cal_regs[i],  &gpadc_otp4[i]);
+			if (ret_otp4[i] < 0)
+				dev_err(gpadc->dev,
+					"%s: read otp4 reg 0x%02x failed\n",
+					__func__, otp4_cal_regs[i]);
+		}
 
-		gpadc->cal_data[ADC_INPUT_VMAIN].gain = CALIB_SCALE *
-			(19500 - 315) /	(vmain_high - vmain_low);
+		/* Calculate gain and offset for IBAT if all reads succeeded */
+		if (!(ret_otp4[0] < 0 || ret_otp4[1] < 0 || ret_otp4[2] < 0)) {
+			ibat_high = (((gpadc_otp4[0] & 0x07) << 7) |
+				((gpadc_otp4[1] & 0xFE) >> 1));
+			ibat_low = (((gpadc_otp4[1] & 0x01) << 5) |
+				((gpadc_otp4[2] & 0xF8) >> 3));
+
+			gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_hi =
+				(u16)ibat_high;
+			gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_lo =
+				(u16)ibat_low;
+
+			V_gain = ((IBAT_VDROP_H - IBAT_VDROP_L)
+				<< CALIB_SHIFT_IBAT) / (ibat_high - ibat_low);
+
+			V_offset = (IBAT_VDROP_H << CALIB_SHIFT_IBAT) -
+				(((IBAT_VDROP_H - IBAT_VDROP_L) <<
+				CALIB_SHIFT_IBAT) / (ibat_high - ibat_low))
+				* ibat_high;
+			/*
+			 * Result obtained is in mV (at a scale factor),
+			 * we need to calculate gain and offset to get mA
+			 */
+			V2A_gain = (ADC_CH_IBAT_MAX - ADC_CH_IBAT_MIN)/
+				(ADC_CH_IBAT_MAX_V - ADC_CH_IBAT_MIN_V);
+			V2A_offset = ((ADC_CH_IBAT_MAX_V * ADC_CH_IBAT_MIN -
+				ADC_CH_IBAT_MAX * ADC_CH_IBAT_MIN_V)
+				<< CALIB_SHIFT_IBAT)
+				/ (ADC_CH_IBAT_MAX_V - ADC_CH_IBAT_MIN_V);
+
+			gpadc->cal_data[ADC_INPUT_IBAT].gain = V_gain * V2A_gain;
+			gpadc->cal_data[ADC_INPUT_IBAT].offset = V_offset *
+				V2A_gain + V2A_offset;
+		} else {
+			gpadc->cal_data[ADC_INPUT_IBAT].gain = 0;
+		}
 
-		gpadc->cal_data[ADC_INPUT_VMAIN].offset = CALIB_SCALE * 19500 -
-			(CALIB_SCALE * (19500 - 315) /
-			 (vmain_high - vmain_low)) * vmain_high;
+		dev_dbg(gpadc->dev, "IBAT gain %llu offset %llu\n",
+			gpadc->cal_data[ADC_INPUT_IBAT].gain,
+			gpadc->cal_data[ADC_INPUT_IBAT].offset);
 	} else {
-		gpadc->cal_data[ADC_INPUT_VMAIN].gain = 0;
+		/* Calculate gain and offset for VMAIN if all reads succeeded */
+		if (!(ret[0] < 0 || ret[1] < 0 || ret[2] < 0)) {
+			vmain_high = (((gpadc_cal[0] & 0x03) << 8) |
+				((gpadc_cal[1] & 0x3F) << 2) |
+				((gpadc_cal[2] & 0xC0) >> 6));
+			vmain_low = ((gpadc_cal[2] & 0x3E) >> 1);
+
+			gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi =
+				(u16)vmain_high;
+			gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo =
+				(u16)vmain_low;
+
+			gpadc->cal_data[ADC_INPUT_VMAIN].gain = CALIB_SCALE *
+				(19500 - 315) / (vmain_high - vmain_low);
+
+			gpadc->cal_data[ADC_INPUT_VMAIN].offset = CALIB_SCALE *
+				19500 - (CALIB_SCALE * (19500 - 315) /
+				(vmain_high - vmain_low)) * vmain_high;
+		} else {
+			gpadc->cal_data[ADC_INPUT_VMAIN].gain = 0;
+		}
 	}
 
 	/* Calculate gain and offset for BTEMP if all reads succeeded */
 	if (!(ret[2] < 0 || ret[3] < 0 || ret[4] < 0)) {
 		btemp_high = (((gpadc_cal[2] & 0x01) << 9) |
-			(gpadc_cal[3] << 1) |
-			((gpadc_cal[4] & 0x80) >> 7));
-
+			(gpadc_cal[3] << 1) | ((gpadc_cal[4] & 0x80) >> 7));
 		btemp_low = ((gpadc_cal[4] & 0x7C) >> 2);
 
+		gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_hi = (u16)btemp_high;
+		gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_lo = (u16)btemp_low;
+
 		gpadc->cal_data[ADC_INPUT_BTEMP].gain =
 			CALIB_SCALE * (1300 - 21) / (btemp_high - btemp_low);
-
 		gpadc->cal_data[ADC_INPUT_BTEMP].offset = CALIB_SCALE * 1300 -
-			(CALIB_SCALE * (1300 - 21) /
-			(btemp_high - btemp_low)) * btemp_high;
+			(CALIB_SCALE * (1300 - 21) / (btemp_high - btemp_low))
+			* btemp_high;
 	} else {
 		gpadc->cal_data[ADC_INPUT_BTEMP].gain = 0;
 	}
@@ -560,9 +842,11 @@ static void ab8500_gpadc_read_calibration_data(struct ab8500_gpadc *gpadc)
 		vbat_high = (((gpadc_cal[4] & 0x03) << 8) | gpadc_cal[5]);
 		vbat_low = ((gpadc_cal[6] & 0xFC) >> 2);
 
+		gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_hi = (u16)vbat_high;
+		gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_lo = (u16)vbat_low;
+
 		gpadc->cal_data[ADC_INPUT_VBAT].gain = CALIB_SCALE *
 			(4700 - 2380) /	(vbat_high - vbat_low);
-
 		gpadc->cal_data[ADC_INPUT_VBAT].offset = CALIB_SCALE * 4700 -
 			(CALIB_SCALE * (4700 - 2380) /
 			(vbat_high - vbat_low)) * vbat_high;
@@ -608,6 +892,31 @@ static int ab8500_gpadc_runtime_idle(struct device *dev)
 	return 0;
 }
 
+static int ab8500_gpadc_suspend(struct device *dev)
+{
+	struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
+
+	mutex_lock(&gpadc->ab8500_gpadc_lock);
+
+	pm_runtime_get_sync(dev);
+
+	regulator_disable(gpadc->regu);
+	return 0;
+}
+
+static int ab8500_gpadc_resume(struct device *dev)
+{
+	struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
+
+	regulator_enable(gpadc->regu);
+
+	pm_runtime_mark_last_busy(gpadc->dev);
+	pm_runtime_put_autosuspend(gpadc->dev);
+
+	mutex_unlock(&gpadc->ab8500_gpadc_lock);
+	return 0;
+}
+
 static int ab8500_gpadc_probe(struct platform_device *pdev)
 {
 	int ret = 0;
@@ -619,13 +928,13 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	gpadc->irq = platform_get_irq_byname(pdev, "SW_CONV_END");
-	if (gpadc->irq < 0) {
-		dev_err(&pdev->dev, "failed to get platform irq-%d\n",
-			gpadc->irq);
-		ret = gpadc->irq;
-		goto fail;
-	}
+	gpadc->irq_sw = platform_get_irq_byname(pdev, "SW_CONV_END");
+	if (gpadc->irq_sw < 0)
+		dev_err(gpadc->dev, "failed to get platform sw_conv_end irq\n");
+
+	gpadc->irq_hw = platform_get_irq_byname(pdev, "HW_CONV_END");
+	if (gpadc->irq_hw < 0)
+		dev_err(gpadc->dev, "failed to get platform hw_conv_end irq\n");
 
 	gpadc->dev = &pdev->dev;
 	gpadc->parent = dev_get_drvdata(pdev->dev.parent);
@@ -634,15 +943,31 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
 	/* Initialize completion used to notify completion of conversion */
 	init_completion(&gpadc->ab8500_gpadc_complete);
 
-	/* Register interrupt  - SwAdcComplete */
-	ret = request_threaded_irq(gpadc->irq, NULL,
-		ab8500_bm_gpswadcconvend_handler,
-		IRQF_ONESHOT | IRQF_NO_SUSPEND | IRQF_SHARED,
-				"ab8500-gpadc", gpadc);
-	if (ret < 0) {
-		dev_err(gpadc->dev, "Failed to register interrupt, irq: %d\n",
-			gpadc->irq);
-		goto fail;
+	/* Register interrupts */
+	if (gpadc->irq_sw >= 0) {
+		ret = request_threaded_irq(gpadc->irq_sw, NULL,
+			ab8500_bm_gpadcconvend_handler,
+			IRQF_NO_SUSPEND | IRQF_SHARED, "ab8500-gpadc-sw",
+			gpadc);
+		if (ret < 0) {
+			dev_err(gpadc->dev,
+				"Failed to register interrupt irq: %d\n",
+				gpadc->irq_sw);
+			goto fail;
+		}
+	}
+
+	if (gpadc->irq_hw >= 0) {
+		ret = request_threaded_irq(gpadc->irq_hw, NULL,
+			ab8500_bm_gpadcconvend_handler,
+			IRQF_NO_SUSPEND | IRQF_SHARED, "ab8500-gpadc-hw",
+			gpadc);
+		if (ret < 0) {
+			dev_err(gpadc->dev,
+				"Failed to register interrupt irq: %d\n",
+				gpadc->irq_hw);
+			goto fail_irq;
+		}
 	}
 
 	/* VTVout LDO used to power up ab8500-GPADC */
@@ -669,11 +994,13 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
 	ab8500_gpadc_read_calibration_data(gpadc);
 	list_add_tail(&gpadc->node, &ab8500_gpadc_list);
 	dev_dbg(gpadc->dev, "probe success\n");
+
 	return 0;
 
 fail_enable:
 fail_irq:
-	free_irq(gpadc->irq, gpadc);
+	free_irq(gpadc->irq_sw, gpadc);
+	free_irq(gpadc->irq_hw, gpadc);
 fail:
 	kfree(gpadc);
 	gpadc = NULL;
@@ -687,7 +1014,10 @@ static int ab8500_gpadc_remove(struct platform_device *pdev)
 	/* remove this gpadc entry from the list */
 	list_del(&gpadc->node);
 	/* remove interrupt  - completion of Sw ADC conversion */
-	free_irq(gpadc->irq, gpadc);
+	if (gpadc->irq_sw >= 0)
+		free_irq(gpadc->irq_sw, gpadc);
+	if (gpadc->irq_hw >= 0)
+		free_irq(gpadc->irq_hw, gpadc);
 
 	pm_runtime_get_sync(gpadc->dev);
 	pm_runtime_disable(gpadc->dev);
@@ -707,6 +1037,9 @@ static const struct dev_pm_ops ab8500_gpadc_pm_ops = {
 	SET_RUNTIME_PM_OPS(ab8500_gpadc_runtime_suspend,
 			   ab8500_gpadc_runtime_resume,
 			   ab8500_gpadc_runtime_idle)
+	SET_SYSTEM_SLEEP_PM_OPS(ab8500_gpadc_suspend,
+				ab8500_gpadc_resume)
+
 };
 
 static struct platform_driver ab8500_gpadc_driver = {
@@ -729,10 +1062,30 @@ static void __exit ab8500_gpadc_exit(void)
 	platform_driver_unregister(&ab8500_gpadc_driver);
 }
 
+/**
+ * ab8540_gpadc_get_otp() - returns OTP values
+ *
+ */
+void ab8540_gpadc_get_otp(struct ab8500_gpadc *gpadc,
+			u16 *vmain_l, u16 *vmain_h, u16 *btemp_l, u16 *btemp_h,
+			u16 *vbat_l, u16 *vbat_h, u16 *ibat_l, u16 *ibat_h)
+{
+	*vmain_l = gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_lo;
+	*vmain_h = gpadc->cal_data[ADC_INPUT_VMAIN].otp_calib_hi;
+	*btemp_l = gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_lo;
+	*btemp_h = gpadc->cal_data[ADC_INPUT_BTEMP].otp_calib_hi;
+	*vbat_l = gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_lo;
+	*vbat_h = gpadc->cal_data[ADC_INPUT_VBAT].otp_calib_hi;
+	*ibat_l = gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_lo;
+	*ibat_h = gpadc->cal_data[ADC_INPUT_IBAT].otp_calib_hi;
+	return ;
+}
+
 subsys_initcall_sync(ab8500_gpadc_init);
 module_exit(ab8500_gpadc_exit);
 
 MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Arun R Murthy, Daniel Willerud, Johan Palsson");
+MODULE_AUTHOR("Arun R Murthy, Daniel Willerud, Johan Palsson,"
+		"M'boumba Cedric Madianga");
 MODULE_ALIAS("platform:ab8500_gpadc");
 MODULE_DESCRIPTION("AB8500 GPADC driver");
diff --git a/drivers/mfd/ab8500-sysctrl.c b/drivers/mfd/ab8500-sysctrl.c
index 108fd86552f0..272479cdb107 100644
--- a/drivers/mfd/ab8500-sysctrl.c
+++ b/drivers/mfd/ab8500-sysctrl.c
@@ -15,19 +15,30 @@
 #include <linux/mfd/abx500/ab8500.h>
 #include <linux/mfd/abx500/ab8500-sysctrl.h>
 
+/* RtcCtrl bits */
+#define AB8500_ALARM_MIN_LOW  0x08
+#define AB8500_ALARM_MIN_MID 0x09
+#define RTC_CTRL 0x0B
+#define RTC_ALARM_ENABLE 0x4
+
 static struct device *sysctrl_dev;
 
 void ab8500_power_off(void)
 {
 	sigset_t old;
 	sigset_t all;
-	static char *pss[] = {"ab8500_ac", "ab8500_usb"};
+	static char *pss[] = {"ab8500_ac", "pm2301", "ab8500_usb"};
 	int i;
 	bool charger_present = false;
 	union power_supply_propval val;
 	struct power_supply *psy;
 	int ret;
 
+	if (sysctrl_dev == NULL) {
+		pr_err("%s: sysctrl not initialized\n", __func__);
+		return;
+	}
+
 	/*
 	 * If we have a charger connected and we're powering off,
 	 * reboot into charge-only mode.
@@ -74,6 +85,63 @@ shutdown:
 	}
 }
 
+/*
+ * Use the AB WD to reset the platform. It will perform a hard
+ * reset instead of a soft reset. Write the reset reason to
+ * the AB before reset, which can be read upon restart.
+ */
+void ab8500_restart(char mode, const char *cmd)
+{
+	struct ab8500_platform_data *plat;
+	struct ab8500_sysctrl_platform_data *pdata;
+	u16 reason = 0;
+	u8 val;
+
+	if (sysctrl_dev == NULL) {
+		pr_err("%s: sysctrl not initialized\n", __func__);
+		return;
+	}
+
+	plat = dev_get_platdata(sysctrl_dev->parent);
+	pdata = plat->sysctrl;
+	if (pdata->reboot_reason_code)
+		reason = pdata->reboot_reason_code(cmd);
+	else
+		pr_warn("[%s] No reboot reason set. Default reason %d\n",
+			__func__, reason);
+
+	/*
+	 * Disable RTC alarm, just a precaution so that no alarm
+	 * is running when WD reset is executed.
+	 */
+	abx500_get_register_interruptible(sysctrl_dev, AB8500_RTC,
+		RTC_CTRL , &val);
+	abx500_set_register_interruptible(sysctrl_dev, AB8500_RTC,
+		RTC_CTRL , (val & ~RTC_ALARM_ENABLE));
+
+	/*
+	 * Android is not using the RTC alarm registers during reboot
+	 * so we borrow them for writing the reason of reset
+	 */
+
+	/* reason[8 LSB] */
+	val = reason & 0xFF;
+	abx500_set_register_interruptible(sysctrl_dev, AB8500_RTC,
+		AB8500_ALARM_MIN_LOW , val);
+
+	/* reason[8 MSB] */
+	val = (reason>>8) & 0xFF;
+	abx500_set_register_interruptible(sysctrl_dev, AB8500_RTC,
+		AB8500_ALARM_MIN_MID , val);
+
+	/* Setting WD timeout to 0 */
+	ab8500_sysctrl_write(AB8500_MAINWDOGTIMER, 0xFF, 0x0);
+
+	/* Setting the parameters to AB8500 WD*/
+	ab8500_sysctrl_write(AB8500_MAINWDOGCTRL, 0xFF, (AB8500_ENABLE_WD |
+		AB8500_WD_RESTART_ON_EXPIRE | AB8500_KICK_WD));
+}
+
 static inline bool valid_bank(u8 bank)
 {
 	return ((bank == AB8500_SYS_CTRL1_BLOCK) ||
@@ -85,7 +153,7 @@ int ab8500_sysctrl_read(u16 reg, u8 *value)
 	u8 bank;
 
 	if (sysctrl_dev == NULL)
-		return -EAGAIN;
+		return -EINVAL;
 
 	bank = (reg >> 8);
 	if (!valid_bank(bank))
@@ -101,7 +169,7 @@ int ab8500_sysctrl_write(u16 reg, u8 mask, u8 value)
 	u8 bank;
 
 	if (sysctrl_dev == NULL)
-		return -EAGAIN;
+		return -EINVAL;
 
 	bank = (reg >> 8);
 	if (!valid_bank(bank))
@@ -114,28 +182,36 @@ EXPORT_SYMBOL(ab8500_sysctrl_write);
 
 static int ab8500_sysctrl_probe(struct platform_device *pdev)
 {
+	struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
 	struct ab8500_platform_data *plat;
 	struct ab8500_sysctrl_platform_data *pdata;
 
-	sysctrl_dev = &pdev->dev;
 	plat = dev_get_platdata(pdev->dev.parent);
+
+	if (!(plat && plat->sysctrl))
+		return -EINVAL;
+
 	if (plat->pm_power_off)
 		pm_power_off = ab8500_power_off;
 
 	pdata = plat->sysctrl;
 
 	if (pdata) {
-		int ret, i, j;
+		int last, ret, i, j;
+
+		if (is_ab8505(ab8500))
+			last = AB8500_SYSCLKREQ4RFCLKBUF;
+		else
+			last = AB8500_SYSCLKREQ8RFCLKBUF;
 
-		for (i = AB8500_SYSCLKREQ1RFCLKBUF;
-		     i <= AB8500_SYSCLKREQ8RFCLKBUF; i++) {
+		for (i = AB8500_SYSCLKREQ1RFCLKBUF; i <= last; i++) {
 			j = i - AB8500_SYSCLKREQ1RFCLKBUF;
 			ret = ab8500_sysctrl_write(i, 0xff,
-						   pdata->initial_req_buf_config[j]);
+					pdata->initial_req_buf_config[j]);
 			dev_dbg(&pdev->dev,
-				"Setting SysClkReq%dRfClkBuf 0x%X\n",
-				j + 1,
-				pdata->initial_req_buf_config[j]);
+					"Setting SysClkReq%dRfClkBuf 0x%X\n",
+					j + 1,
+					pdata->initial_req_buf_config[j]);
 			if (ret < 0) {
 				dev_err(&pdev->dev,
 					"unable to set sysClkReq%dRfClkBuf: "
diff --git a/drivers/power/88pm860x_charger.c b/drivers/power/88pm860x_charger.c
index 4b37a5af8deb..36fb4b5a4b0d 100644
--- a/drivers/power/88pm860x_charger.c
+++ b/drivers/power/88pm860x_charger.c
@@ -714,7 +714,6 @@ out_irq:
 	while (--i >= 0)
 		free_irq(info->irq[i], info);
 out:
-	kfree(info);
 	return ret;
 }
 
@@ -728,7 +727,6 @@ static int pm860x_charger_remove(struct platform_device *pdev)
 	free_irq(info->irq[0], info);
 	for (i = 0; i < info->irq_nums; i++)
 		free_irq(info->irq[i], info);
-	kfree(info);
 	return 0;
 }
 
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index ffe02fb7cbc7..0d0b5d7d19d0 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -340,6 +340,13 @@ config CHARGER_SMB347
 	  Say Y to include support for Summit Microelectronics SMB347
 	  Battery Charger.
 
+config CHARGER_TPS65090
+	tristate "TPS65090 battery charger driver"
+	depends on MFD_TPS65090
+	help
+	 Say Y here to enable support for battery charging with TPS65090
+	 PMIC chips.
+
 config AB8500_BM
 	bool "AB8500 Battery Management Driver"
 	depends on AB8500_CORE && AB8500_GPADC
@@ -353,13 +360,6 @@ config BATTERY_GOLDFISH
 	  Say Y to enable support for the battery and AC power in the
 	  Goldfish emulator.
 
-config CHARGER_PM2301
-	bool "PM2301 Battery Charger Driver"
-	depends on AB8500_BM
-	help
-	  Say Y to include support for PM2301 charger driver.
-	  Depends on AB8500 battery management core.
-
 source "drivers/power/reset/Kconfig"
 
 endif # POWER_SUPPLY
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 3f66436af45c..653bf6ceff30 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -39,7 +39,7 @@ obj-$(CONFIG_CHARGER_PCF50633)	+= pcf50633-charger.o
 obj-$(CONFIG_BATTERY_JZ4740)	+= jz4740-battery.o
 obj-$(CONFIG_BATTERY_INTEL_MID)	+= intel_mid_battery.o
 obj-$(CONFIG_BATTERY_RX51)	+= rx51_battery.o
-obj-$(CONFIG_AB8500_BM)		+= ab8500_bmdata.o ab8500_charger.o ab8500_fg.o ab8500_btemp.o abx500_chargalg.o
+obj-$(CONFIG_AB8500_BM)		+= ab8500_bmdata.o ab8500_charger.o ab8500_fg.o ab8500_btemp.o abx500_chargalg.o pm2301_charger.o
 obj-$(CONFIG_CHARGER_ISP1704)	+= isp1704_charger.o
 obj-$(CONFIG_CHARGER_MAX8903)	+= max8903_charger.o
 obj-$(CONFIG_CHARGER_TWL4030)	+= twl4030_charger.o
@@ -47,10 +47,10 @@ obj-$(CONFIG_CHARGER_LP8727)	+= lp8727_charger.o
 obj-$(CONFIG_CHARGER_LP8788)	+= lp8788-charger.o
 obj-$(CONFIG_CHARGER_GPIO)	+= gpio-charger.o
 obj-$(CONFIG_CHARGER_MANAGER)	+= charger-manager.o
-obj-$(CONFIG_CHARGER_PM2301)	+= pm2301_charger.o
 obj-$(CONFIG_CHARGER_MAX8997)	+= max8997_charger.o
 obj-$(CONFIG_CHARGER_MAX8998)	+= max8998_charger.o
 obj-$(CONFIG_CHARGER_BQ2415X)	+= bq2415x_charger.o
 obj-$(CONFIG_POWER_AVS)		+= avs/
 obj-$(CONFIG_CHARGER_SMB347)	+= smb347-charger.o
+obj-$(CONFIG_CHARGER_TPS65090)	+= tps65090-charger.o
 obj-$(CONFIG_POWER_RESET)	+= reset/
diff --git a/drivers/power/ab8500_bmdata.c b/drivers/power/ab8500_bmdata.c
index 7a96c0650fbb..d29864533093 100644
--- a/drivers/power/ab8500_bmdata.c
+++ b/drivers/power/ab8500_bmdata.c
@@ -11,7 +11,7 @@
  * Note that the res_to_temp table must be strictly sorted by falling resistance
  * values to work.
  */
-static struct abx500_res_to_temp temp_tbl_A_thermistor[] = {
+const struct abx500_res_to_temp ab8500_temp_tbl_a_thermistor[] = {
 	{-5, 53407},
 	{ 0, 48594},
 	{ 5, 43804},
@@ -28,8 +28,12 @@ static struct abx500_res_to_temp temp_tbl_A_thermistor[] = {
 	{60, 13437},
 	{65, 12500},
 };
+EXPORT_SYMBOL(ab8500_temp_tbl_a_thermistor);
 
-static struct abx500_res_to_temp temp_tbl_B_thermistor[] = {
+const int ab8500_temp_tbl_a_size = ARRAY_SIZE(ab8500_temp_tbl_a_thermistor);
+EXPORT_SYMBOL(ab8500_temp_tbl_a_size);
+
+const struct abx500_res_to_temp ab8500_temp_tbl_b_thermistor[] = {
 	{-5, 200000},
 	{ 0, 159024},
 	{ 5, 151921},
@@ -46,8 +50,12 @@ static struct abx500_res_to_temp temp_tbl_B_thermistor[] = {
 	{60,  85461},
 	{65,  82869},
 };
+EXPORT_SYMBOL(ab8500_temp_tbl_b_thermistor);
+
+const int ab8500_temp_tbl_b_size = ARRAY_SIZE(ab8500_temp_tbl_b_thermistor);
+EXPORT_SYMBOL(ab8500_temp_tbl_b_size);
 
-static struct abx500_v_to_cap cap_tbl_A_thermistor[] = {
+static const struct abx500_v_to_cap cap_tbl_a_thermistor[] = {
 	{4171,	100},
 	{4114,	 95},
 	{4009,	 83},
@@ -70,7 +78,7 @@ static struct abx500_v_to_cap cap_tbl_A_thermistor[] = {
 	{3247,	  0},
 };
 
-static struct abx500_v_to_cap cap_tbl_B_thermistor[] = {
+static const struct abx500_v_to_cap cap_tbl_b_thermistor[] = {
 	{4161,	100},
 	{4124,	 98},
 	{4044,	 90},
@@ -93,7 +101,7 @@ static struct abx500_v_to_cap cap_tbl_B_thermistor[] = {
 	{3250,	  0},
 };
 
-static struct abx500_v_to_cap cap_tbl[] = {
+static const struct abx500_v_to_cap cap_tbl[] = {
 	{4186,	100},
 	{4163,	 99},
 	{4114,	 95},
@@ -124,7 +132,7 @@ static struct abx500_v_to_cap cap_tbl[] = {
  * Note that the res_to_temp table must be strictly sorted by falling
  * resistance values to work.
  */
-static struct abx500_res_to_temp temp_tbl[] = {
+static const struct abx500_res_to_temp temp_tbl[] = {
 	{-5, 214834},
 	{ 0, 162943},
 	{ 5, 124820},
@@ -146,7 +154,7 @@ static struct abx500_res_to_temp temp_tbl[] = {
  * Note that the batres_vs_temp table must be strictly sorted by falling
  * temperature values to work.
  */
-static struct batres_vs_temp temp_to_batres_tbl_thermistor[] = {
+static const struct batres_vs_temp temp_to_batres_tbl_thermistor[] = {
 	{ 40, 120},
 	{ 30, 135},
 	{ 20, 165},
@@ -160,7 +168,7 @@ static struct batres_vs_temp temp_to_batres_tbl_thermistor[] = {
  * Note that the batres_vs_temp table must be strictly sorted by falling
  * temperature values to work.
  */
-static struct batres_vs_temp temp_to_batres_tbl_ext_thermistor[] = {
+static const struct batres_vs_temp temp_to_batres_tbl_ext_thermistor[] = {
 	{ 60, 300},
 	{ 30, 300},
 	{ 20, 300},
@@ -171,7 +179,7 @@ static struct batres_vs_temp temp_to_batres_tbl_ext_thermistor[] = {
 };
 
 /* battery resistance table for LI ION 9100 battery */
-static struct batres_vs_temp temp_to_batres_tbl_9100[] = {
+static const struct batres_vs_temp temp_to_batres_tbl_9100[] = {
 	{ 60, 180},
 	{ 30, 180},
 	{ 20, 180},
@@ -230,10 +238,10 @@ static struct abx500_battery_type bat_type_thermistor[] = {
 		.maint_b_chg_timer_h = 200,
 		.low_high_cur_lvl = 300,
 		.low_high_vol_lvl = 4000,
-		.n_temp_tbl_elements = ARRAY_SIZE(temp_tbl_A_thermistor),
-		.r_to_t_tbl = temp_tbl_A_thermistor,
-		.n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_A_thermistor),
-		.v_to_cap_tbl = cap_tbl_A_thermistor,
+		.n_temp_tbl_elements = ARRAY_SIZE(ab8500_temp_tbl_a_thermistor),
+		.r_to_t_tbl = ab8500_temp_tbl_a_thermistor,
+		.n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_a_thermistor),
+		.v_to_cap_tbl = cap_tbl_a_thermistor,
 		.n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 		.batres_tbl = temp_to_batres_tbl_thermistor,
 
@@ -258,10 +266,10 @@ static struct abx500_battery_type bat_type_thermistor[] = {
 		.maint_b_chg_timer_h = 200,
 		.low_high_cur_lvl = 300,
 		.low_high_vol_lvl = 4000,
-		.n_temp_tbl_elements = ARRAY_SIZE(temp_tbl_B_thermistor),
-		.r_to_t_tbl = temp_tbl_B_thermistor,
-		.n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_B_thermistor),
-		.v_to_cap_tbl = cap_tbl_B_thermistor,
+		.n_temp_tbl_elements = ARRAY_SIZE(ab8500_temp_tbl_b_thermistor),
+		.r_to_t_tbl = ab8500_temp_tbl_b_thermistor,
+		.n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_b_thermistor),
+		.v_to_cap_tbl = cap_tbl_b_thermistor,
 		.n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
 		.batres_tbl = temp_to_batres_tbl_thermistor,
 	},
@@ -407,15 +415,27 @@ static const struct abx500_fg_parameters fg = {
 	.battok_raising_th_sel1 = 2860,
 	.maint_thres = 95,
 	.user_cap_limit = 15,
+	.pcut_enable = 1,
+	.pcut_max_time = 127,
+	.pcut_flag_time = 112,
+	.pcut_max_restart = 15,
+	.pcut_debounce_time = 2,
 };
 
-static const struct abx500_maxim_parameters maxi_params = {
+static const struct abx500_maxim_parameters ab8500_maxi_params = {
 	.ena_maxi = true,
 	.chg_curr = 910,
 	.wait_cycles = 10,
 	.charger_curr_step = 100,
 };
 
+static const struct abx500_maxim_parameters abx540_maxi_params = {
+        .ena_maxi = true,
+        .chg_curr = 3000,
+        .wait_cycles = 10,
+        .charger_curr_step = 200,
+};
+
 static const struct abx500_bm_charger_parameters chg = {
 	.usb_volt_max		= 5500,
 	.usb_curr_max		= 1500,
@@ -423,6 +443,46 @@ static const struct abx500_bm_charger_parameters chg = {
 	.ac_curr_max		= 1500,
 };
 
+/*
+ * This array maps the raw hex value to charger output current used by the
+ * AB8500 values
+ */
+static int ab8500_charge_output_curr_map[] = {
+        100,    200,    300,    400,    500,    600,    700,    800,
+        900,    1000,   1100,   1200,   1300,   1400,   1500,   1500,
+};
+
+static int ab8540_charge_output_curr_map[] = {
+        0,      0,      0,      75,     100,    125,    150,    175,
+        200,    225,    250,    275,    300,    325,    350,    375,
+        400,    425,    450,    475,    500,    525,    550,    575,
+        600,    625,    650,    675,    700,    725,    750,    775,
+        800,    825,    850,    875,    900,    925,    950,    975,
+        1000,   1025,   1050,   1075,   1100,   1125,   1150,   1175,
+        1200,   1225,   1250,   1275,   1300,   1325,   1350,   1375,
+        1400,   1425,   1450,   1500,   1600,   1700,   1900,   2000,
+};
+
+/*
+ * This array maps the raw hex value to charger input current used by the
+ * AB8500 values
+ */
+static int ab8500_charge_input_curr_map[] = {
+        50,     98,     193,    290,    380,    450,    500,    600,
+        700,    800,    900,    1000,   1100,   1300,   1400,   1500,
+};
+
+static int ab8540_charge_input_curr_map[] = {
+        25,     50,     75,     100,    125,    150,    175,    200,
+        225,    250,    275,    300,    325,    350,    375,    400,
+        425,    450,    475,    500,    525,    550,    575,    600,
+        625,    650,    675,    700,    725,    750,    775,    800,
+        825,    850,    875,    900,    925,    950,    975,    1000,
+        1025,   1050,   1075,   1100,   1125,   1150,   1175,   1200,
+        1225,   1250,   1275,   1300,   1325,   1350,   1375,   1400,
+        1425,   1450,   1475,   1500,   1500,   1500,   1500,   1500,
+};
+
 struct abx500_bm_data ab8500_bm_data = {
 	.temp_under             = 3,
 	.temp_low               = 8,
@@ -442,22 +502,60 @@ struct abx500_bm_data ab8500_bm_data = {
 	.fg_res                 = 100,
 	.cap_levels             = &cap_levels,
 	.bat_type               = bat_type_thermistor,
-	.n_btypes               = 3,
+	.n_btypes               = ARRAY_SIZE(bat_type_thermistor),
 	.batt_id                = 0,
 	.interval_charging      = 5,
 	.interval_not_charging  = 120,
 	.temp_hysteresis        = 3,
 	.gnd_lift_resistance    = 34,
-	.maxi                   = &maxi_params,
+	.chg_output_curr        = ab8500_charge_output_curr_map,
+	.n_chg_out_curr         = ARRAY_SIZE(ab8500_charge_output_curr_map),
+	.maxi                   = &ab8500_maxi_params,
 	.chg_params             = &chg,
 	.fg_params              = &fg,
+        .chg_input_curr         = ab8500_charge_input_curr_map,
+        .n_chg_in_curr          = ARRAY_SIZE(ab8500_charge_input_curr_map),
+};
+
+struct abx500_bm_data ab8540_bm_data = {
+        .temp_under             = 3,
+        .temp_low               = 8,
+        .temp_high              = 43,
+        .temp_over              = 48,
+        .main_safety_tmr_h      = 4,
+        .temp_interval_chg      = 20,
+        .temp_interval_nochg    = 120,
+        .usb_safety_tmr_h       = 4,
+        .bkup_bat_v             = BUP_VCH_SEL_2P6V,
+        .bkup_bat_i             = BUP_ICH_SEL_150UA,
+        .no_maintenance         = false,
+        .capacity_scaling       = false,
+        .adc_therm              = ABx500_ADC_THERM_BATCTRL,
+        .chg_unknown_bat        = false,
+        .enable_overshoot       = false,
+        .fg_res                 = 100,
+        .cap_levels             = &cap_levels,
+        .bat_type               = bat_type_thermistor,
+        .n_btypes               = ARRAY_SIZE(bat_type_thermistor),
+        .batt_id                = 0,
+        .interval_charging      = 5,
+        .interval_not_charging  = 120,
+        .temp_hysteresis        = 3,
+        .gnd_lift_resistance    = 0,
+        .maxi                   = &abx540_maxi_params,
+        .chg_params             = &chg,
+        .fg_params              = &fg,
+        .chg_output_curr        = ab8540_charge_output_curr_map,
+        .n_chg_out_curr         = ARRAY_SIZE(ab8540_charge_output_curr_map),
+        .chg_input_curr         = ab8540_charge_input_curr_map,
+        .n_chg_in_curr          = ARRAY_SIZE(ab8540_charge_input_curr_map),
 };
 
 int ab8500_bm_of_probe(struct device *dev,
 		       struct device_node *np,
 		       struct abx500_bm_data *bm)
 {
-	struct batres_vs_temp *tmp_batres_tbl;
+	const struct batres_vs_temp *tmp_batres_tbl;
 	struct device_node *battery_node;
 	const char *btech;
 	int i;
diff --git a/drivers/power/ab8500_btemp.c b/drivers/power/ab8500_btemp.c
index 07689064996e..d412d34bf3df 100644
--- a/drivers/power/ab8500_btemp.c
+++ b/drivers/power/ab8500_btemp.c
@@ -42,6 +42,9 @@
 #define BTEMP_BATCTRL_CURR_SRC_16UA	16
 #define BTEMP_BATCTRL_CURR_SRC_18UA	18
 
+#define BTEMP_BATCTRL_CURR_SRC_60UA	60
+#define BTEMP_BATCTRL_CURR_SRC_120UA	120
+
 #define to_ab8500_btemp_device_info(x) container_of((x), \
 	struct ab8500_btemp, btemp_psy);
 
@@ -76,8 +79,8 @@ struct ab8500_btemp_ranges {
  * @dev:		Pointer to the structure device
  * @node:		List of AB8500 BTEMPs, hence prepared for reentrance
  * @curr_source:	What current source we use, in uA
- * @bat_temp:		Battery temperature in degree Celcius
- * @prev_bat_temp	Last dispatched battery temperature
+ * @bat_temp:		Dispatched battery temperature in degree Celcius
+ * @prev_bat_temp	Last measured battery temperature in degree Celcius
  * @parent:		Pointer to the struct ab8500
  * @gpadc:		Pointer to the struct gpadc
  * @fg:			Pointer to the struct fg
@@ -128,6 +131,7 @@ struct ab8500_btemp *ab8500_btemp_get(void)
 
 	return btemp;
 }
+EXPORT_SYMBOL(ab8500_btemp_get);
 
 /**
  * ab8500_btemp_batctrl_volt_to_res() - convert batctrl voltage to resistance
@@ -155,7 +159,7 @@ static int ab8500_btemp_batctrl_volt_to_res(struct ab8500_btemp *di,
 	if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL) {
 		/*
 		 * If the battery has internal NTC, we use the current
-		 * source to calculate the resistance, 7uA or 20uA
+		 * source to calculate the resistance.
 		 */
 		rbs = (v_batctrl * 1000
 		       - di->bm->gnd_lift_resistance * inst_curr)
@@ -216,7 +220,12 @@ static int ab8500_btemp_curr_source_enable(struct ab8500_btemp *di,
 	/* Only do this for batteries with internal NTC */
 	if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && enable) {
 
-		if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
+		if (is_ab8540(di->parent)) {
+			if (di->curr_source == BTEMP_BATCTRL_CURR_SRC_60UA)
+				curr = BAT_CTRL_60U_ENA;
+			else
+				curr = BAT_CTRL_120U_ENA;
+		} else if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
 			if (di->curr_source == BTEMP_BATCTRL_CURR_SRC_16UA)
 				curr = BAT_CTRL_16U_ENA;
 			else
@@ -257,7 +266,14 @@ static int ab8500_btemp_curr_source_enable(struct ab8500_btemp *di,
 	} else if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && !enable) {
 		dev_dbg(di->dev, "Disable BATCTRL curr source\n");
 
-		if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
+		if (is_ab8540(di->parent)) {
+			/* Write 0 to the curr bits */
+			ret = abx500_mask_and_set_register_interruptible(
+				di->dev,
+				AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
+				BAT_CTRL_60U_ENA | BAT_CTRL_120U_ENA,
+				~(BAT_CTRL_60U_ENA | BAT_CTRL_120U_ENA));
+		} else if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
 			/* Write 0 to the curr bits */
 			ret = abx500_mask_and_set_register_interruptible(
 				di->dev,
@@ -314,7 +330,13 @@ static int ab8500_btemp_curr_source_enable(struct ab8500_btemp *di,
 	 * if we got an error above
 	 */
 disable_curr_source:
-	if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
+	if (is_ab8540(di->parent)) {
+		/* Write 0 to the curr bits */
+		ret = abx500_mask_and_set_register_interruptible(di->dev,
+			AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
+			BAT_CTRL_60U_ENA | BAT_CTRL_120U_ENA,
+			~(BAT_CTRL_60U_ENA | BAT_CTRL_120U_ENA));
+	} else if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
 		/* Write 0 to the curr bits */
 		ret = abx500_mask_and_set_register_interruptible(di->dev,
 			AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
@@ -541,7 +563,9 @@ static int ab8500_btemp_id(struct ab8500_btemp *di)
 {
 	int res;
 	u8 i;
-	if (is_ab9540(di->parent) || is_ab8505(di->parent))
+	if (is_ab8540(di->parent))
+		di->curr_source = BTEMP_BATCTRL_CURR_SRC_60UA;
+	else if (is_ab9540(di->parent) || is_ab8505(di->parent))
 		di->curr_source = BTEMP_BATCTRL_CURR_SRC_16UA;
 	else
 		di->curr_source = BTEMP_BATCTRL_CURR_SRC_7UA;
@@ -579,12 +603,17 @@ static int ab8500_btemp_id(struct ab8500_btemp *di)
 
 	/*
 	 * We only have to change current source if the
-	 * detected type is Type 1, else we use the 7uA source
+	 * detected type is Type 1.
 	 */
 	if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL &&
-			di->bm->batt_id == 1) {
-		if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
-			dev_dbg(di->dev, "Set BATCTRL current source to 16uA\n");
+	    di->bm->batt_id == 1) {
+		if (is_ab8540(di->parent)) {
+			dev_dbg(di->dev,
+				"Set BATCTRL current source to 60uA\n");
+			di->curr_source = BTEMP_BATCTRL_CURR_SRC_60UA;
+		} else if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
+			dev_dbg(di->dev,
+				"Set BATCTRL current source to 16uA\n");
 			di->curr_source = BTEMP_BATCTRL_CURR_SRC_16UA;
 		} else {
 			dev_dbg(di->dev, "Set BATCTRL current source to 20uA\n");
@@ -604,22 +633,37 @@ static int ab8500_btemp_id(struct ab8500_btemp *di)
 static void ab8500_btemp_periodic_work(struct work_struct *work)
 {
 	int interval;
+	int bat_temp;
 	struct ab8500_btemp *di = container_of(work,
 		struct ab8500_btemp, btemp_periodic_work.work);
 
 	if (!di->initialized) {
-		di->initialized = true;
 		/* Identify the battery */
 		if (ab8500_btemp_id(di) < 0)
 			dev_warn(di->dev, "failed to identify the battery\n");
 	}
 
-	di->bat_temp = ab8500_btemp_measure_temp(di);
-
-	if (di->bat_temp != di->prev_bat_temp) {
-		di->prev_bat_temp = di->bat_temp;
+	bat_temp = ab8500_btemp_measure_temp(di);
+	/*
+	 * Filter battery temperature.
+	 * Allow direct updates on temperature only if two samples result in
+	 * same temperature. Else only allow 1 degree change from previous
+	 * reported value in the direction of the new measurement.
+	 */
+	if ((bat_temp == di->prev_bat_temp) || !di->initialized) {
+		if ((di->bat_temp != di->prev_bat_temp) || !di->initialized) {
+			di->initialized = true;
+			di->bat_temp = bat_temp;
+			power_supply_changed(&di->btemp_psy);
+		}
+	} else if (bat_temp < di->prev_bat_temp) {
+		di->bat_temp--;
+		power_supply_changed(&di->btemp_psy);
+	} else if (bat_temp > di->prev_bat_temp) {
+		di->bat_temp++;
 		power_supply_changed(&di->btemp_psy);
 	}
+	di->prev_bat_temp = bat_temp;
 
 	if (di->events.ac_conn || di->events.usb_conn)
 		interval = di->bm->temp_interval_chg;
@@ -772,7 +816,7 @@ static void ab8500_btemp_periodic(struct ab8500_btemp *di,
  *
  * Returns battery temperature
  */
-static int ab8500_btemp_get_temp(struct ab8500_btemp *di)
+int ab8500_btemp_get_temp(struct ab8500_btemp *di)
 {
 	int temp = 0;
 
@@ -808,6 +852,7 @@ static int ab8500_btemp_get_temp(struct ab8500_btemp *di)
 	}
 	return temp;
 }
+EXPORT_SYMBOL(ab8500_btemp_get_temp);
 
 /**
  * ab8500_btemp_get_batctrl_temp() - get the temperature
@@ -819,6 +864,7 @@ int ab8500_btemp_get_batctrl_temp(struct ab8500_btemp *btemp)
 {
 	return btemp->bat_temp * 1000;
 }
+EXPORT_SYMBOL(ab8500_btemp_get_batctrl_temp);
 
 /**
  * ab8500_btemp_get_property() - get the btemp properties
diff --git a/drivers/power/ab8500_charger.c b/drivers/power/ab8500_charger.c
index 24b30b7ea5ca..a558318b169c 100644
--- a/drivers/power/ab8500_charger.c
+++ b/drivers/power/ab8500_charger.c
@@ -15,6 +15,7 @@
 #include <linux/device.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
+#include <linux/notifier.h>
 #include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/power_supply.h>
@@ -52,10 +53,15 @@
 #define VBUS_DET_DBNC100		0x02
 #define VBUS_DET_DBNC1			0x01
 #define OTP_ENABLE_WD			0x01
+#define DROP_COUNT_RESET		0x01
+#define USB_CH_DET			0x01
 
 #define MAIN_CH_INPUT_CURR_SHIFT	4
 #define VBUS_IN_CURR_LIM_SHIFT		4
+#define AB8540_VBUS_IN_CURR_LIM_SHIFT	2
 #define AUTO_VBUS_IN_CURR_LIM_SHIFT	4
+#define AB8540_AUTO_VBUS_IN_CURR_MASK	0x3F
+#define VBUS_IN_CURR_LIM_RETRY_SET_TIME	30 /* seconds */
 
 #define LED_INDICATOR_PWM_ENA		0x01
 #define LED_INDICATOR_PWM_DIS		0x00
@@ -77,7 +83,9 @@
 
 /* UsbLineStatus register bit masks */
 #define AB8500_USB_LINK_STATUS		0x78
+#define AB8505_USB_LINK_STATUS		0xF8
 #define AB8500_STD_HOST_SUSP		0x18
+#define USB_LINK_STATUS_SHIFT		3
 
 /* Watchdog timeout constant */
 #define WD_TIMER			0x30 /* 4min */
@@ -96,6 +104,10 @@
 #define AB8500_SW_CONTROL_FALLBACK	0x03
 /* Wait for enumeration before charing in us */
 #define WAIT_ACA_RID_ENUMERATION	(5 * 1000)
+/*External charger control*/
+#define AB8500_SYS_CHARGER_CONTROL_REG		0x52
+#define EXTERNAL_CHARGER_DISABLE_REG_VAL	0x03
+#define EXTERNAL_CHARGER_ENABLE_REG_VAL		0x07
 
 /* UsbLineStatus register - usb types */
 enum ab8500_charger_link_status {
@@ -196,10 +208,15 @@ struct ab8500_charger_usb_state {
 	spinlock_t usb_lock;
 };
 
+struct ab8500_charger_max_usb_in_curr {
+	int usb_type_max;
+	int set_max;
+	int calculated_max;
+};
+
 /**
  * struct ab8500_charger - ab8500 Charger device information
  * @dev:		Pointer to the structure device
- * @max_usb_in_curr:	Max USB charger input current
  * @vbus_detected:	VBUS detected
  * @vbus_detected_start:
  *			VBUS detected during startup
@@ -214,7 +231,6 @@ struct ab8500_charger_usb_state {
  * @autopower		Indicate if we should have automatic pwron after pwrloss
  * @autopower_cfg	platform specific power config support for "pwron after pwrloss"
  * @invalid_charger_detect_state State when forcing AB to use invalid charger
- * @is_usb_host:	Indicate if last detected USB type is host
  * @is_aca_rid:		Incicate if accessory is ACA type
  * @current_stepping_sessions:
  *			Counter for current stepping sessions
@@ -223,6 +239,7 @@ struct ab8500_charger_usb_state {
  * @bm:           	Platform specific battery management information
  * @flags:		Structure for information about events triggered
  * @usb_state:		Structure for usb stack information
+ * @max_usb_in_curr:	Max USB charger input current
  * @ac_chg:		AC charger power supply
  * @usb_chg:		USB charger power supply
  * @ac:			Structure that holds the AC charger properties
@@ -254,7 +271,6 @@ struct ab8500_charger_usb_state {
  */
 struct ab8500_charger {
 	struct device *dev;
-	int max_usb_in_curr;
 	bool vbus_detected;
 	bool vbus_detected_start;
 	bool ac_conn;
@@ -266,7 +282,6 @@ struct ab8500_charger {
 	bool autopower;
 	bool autopower_cfg;
 	int invalid_charger_detect_state;
-	bool is_usb_host;
 	int is_aca_rid;
 	atomic_t current_stepping_sessions;
 	struct ab8500 *parent;
@@ -274,6 +289,7 @@ struct ab8500_charger {
 	struct abx500_bm_data *bm;
 	struct ab8500_charger_event_flags flags;
 	struct ab8500_charger_usb_state usb_state;
+	struct ab8500_charger_max_usb_in_curr max_usb_in_curr;
 	struct ux500_charger ac_chg;
 	struct ux500_charger usb_chg;
 	struct ab8500_charger_info ac;
@@ -415,13 +431,18 @@ static void ab8500_charger_set_usb_connected(struct ab8500_charger *di,
 	if (connected != di->usb.charger_connected) {
 		dev_dbg(di->dev, "USB connected:%i\n", connected);
 		di->usb.charger_connected = connected;
+
+		if (!connected)
+			di->flags.vbus_drop_end = false;
+
 		sysfs_notify(&di->usb_chg.psy.dev->kobj, NULL, "present");
 
 		if (connected) {
 			mutex_lock(&di->charger_attached_mutex);
 			mutex_unlock(&di->charger_attached_mutex);
 
-			queue_delayed_work(di->charger_wq,
+			if (is_ab8500(di->parent))
+				queue_delayed_work(di->charger_wq,
 					   &di->usb_charger_attached_work,
 					   HZ);
 		} else {
@@ -668,23 +689,19 @@ static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
 	case USB_STAT_STD_HOST_C_S:
 		dev_dbg(di->dev, "USB Type - Standard host is "
 			"detected through USB driver\n");
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
-		di->is_usb_host = true;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
 		di->is_aca_rid = 0;
 		break;
 	case USB_STAT_HOST_CHG_HS_CHIRP:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
-		di->is_usb_host = true;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
 		di->is_aca_rid = 0;
 		break;
 	case USB_STAT_HOST_CHG_HS:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
-		di->is_usb_host = true;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
 		di->is_aca_rid = 0;
 		break;
 	case USB_STAT_ACA_RID_C_HS:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P9;
-		di->is_usb_host = false;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P9;
 		di->is_aca_rid = 0;
 		break;
 	case USB_STAT_ACA_RID_A:
@@ -693,8 +710,7 @@ static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
 		 * can consume (900mA). Closest level is 500mA
 		 */
 		dev_dbg(di->dev, "USB_STAT_ACA_RID_A detected\n");
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
-		di->is_usb_host = false;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
 		di->is_aca_rid = 1;
 		break;
 	case USB_STAT_ACA_RID_B:
@@ -702,38 +718,35 @@ static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
 		 * Dedicated charger level minus 120mA (20mA for ACA and
 		 * 100mA for potential accessory). Closest level is 1300mA
 		 */
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P3;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P3;
 		dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status,
-				di->max_usb_in_curr);
-		di->is_usb_host = false;
+				di->max_usb_in_curr.usb_type_max);
 		di->is_aca_rid = 1;
 		break;
 	case USB_STAT_HOST_CHG_NM:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
-		di->is_usb_host = true;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
 		di->is_aca_rid = 0;
 		break;
 	case USB_STAT_DEDICATED_CHG:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P5;
-		di->is_usb_host = false;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P5;
 		di->is_aca_rid = 0;
 		break;
 	case USB_STAT_ACA_RID_C_HS_CHIRP:
 	case USB_STAT_ACA_RID_C_NM:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P5;
-		di->is_usb_host = false;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_1P5;
 		di->is_aca_rid = 1;
 		break;
 	case USB_STAT_NOT_CONFIGURED:
 		if (di->vbus_detected) {
 			di->usb_device_is_unrecognised = true;
 			dev_dbg(di->dev, "USB Type - Legacy charger.\n");
-			di->max_usb_in_curr = USB_CH_IP_CUR_LVL_1P5;
+			di->max_usb_in_curr.usb_type_max =
+						USB_CH_IP_CUR_LVL_1P5;
 			break;
 		}
 	case USB_STAT_HM_IDGND:
 		dev_err(di->dev, "USB Type - Charging not allowed\n");
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05;
 		ret = -ENXIO;
 		break;
 	case USB_STAT_RESERVED:
@@ -743,12 +756,13 @@ static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
 						"VBUS has collapsed\n");
 			ret = -ENXIO;
 			break;
-		}
-		if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
+		} else {
 			dev_dbg(di->dev, "USB Type - Charging not allowed\n");
-			di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
+			di->max_usb_in_curr.usb_type_max =
+						USB_CH_IP_CUR_LVL_0P05;
 			dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d",
-					link_status, di->max_usb_in_curr);
+				link_status,
+				di->max_usb_in_curr.usb_type_max);
 			ret = -ENXIO;
 			break;
 		}
@@ -757,23 +771,24 @@ static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
 	case USB_STAT_CARKIT_2:
 	case USB_STAT_ACA_DOCK_CHARGER:
 	case USB_STAT_CHARGER_LINE_1:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
 		dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d", link_status,
-				di->max_usb_in_curr);
+				di->max_usb_in_curr.usb_type_max);
 	case USB_STAT_NOT_VALID_LINK:
 		dev_err(di->dev, "USB Type invalid - try charging anyway\n");
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
 		break;
 
 	default:
 		dev_err(di->dev, "USB Type - Unknown\n");
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05;
 		ret = -ENXIO;
 		break;
 	};
 
+	di->max_usb_in_curr.set_max = di->max_usb_in_curr.usb_type_max;
 	dev_dbg(di->dev, "USB Type - 0x%02x MaxCurr: %d",
-		link_status, di->max_usb_in_curr);
+		link_status, di->max_usb_in_curr.set_max);
 
 	return ret;
 }
@@ -796,21 +811,22 @@ static int ab8500_charger_read_usb_type(struct ab8500_charger *di)
 		dev_err(di->dev, "%s ab8500 read failed\n", __func__);
 		return ret;
 	}
-	if (is_ab8500(di->parent)) {
+	if (is_ab8500(di->parent))
 		ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
-				AB8500_USB_LINE_STAT_REG, &val);
-	} else {
-		if (is_ab9540(di->parent) || is_ab8505(di->parent))
-			ret = abx500_get_register_interruptible(di->dev,
-				AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val);
-	}
+			AB8500_USB_LINE_STAT_REG, &val);
+	else
+		ret = abx500_get_register_interruptible(di->dev,
+			AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val);
 	if (ret < 0) {
 		dev_err(di->dev, "%s ab8500 read failed\n", __func__);
 		return ret;
 	}
 
 	/* get the USB type */
-	val = (val & AB8500_USB_LINK_STATUS) >> 3;
+	if (is_ab8500(di->parent))
+		val = (val & AB8500_USB_LINK_STATUS) >> USB_LINK_STATUS_SHIFT;
+	else
+		val = (val & AB8505_USB_LINK_STATUS) >> USB_LINK_STATUS_SHIFT;
 	ret = ab8500_charger_max_usb_curr(di,
 		(enum ab8500_charger_link_status) val);
 
@@ -865,7 +881,12 @@ static int ab8500_charger_detect_usb_type(struct ab8500_charger *di)
 		 */
 
 		/* get the USB type */
-		val = (val & AB8500_USB_LINK_STATUS) >> 3;
+		if (is_ab8500(di->parent))
+			val = (val & AB8500_USB_LINK_STATUS) >>
+							USB_LINK_STATUS_SHIFT;
+		else
+			val = (val & AB8505_USB_LINK_STATUS) >>
+							USB_LINK_STATUS_SHIFT;
 		if (val)
 			break;
 	}
@@ -960,51 +981,6 @@ static int ab8500_charger_voltage_map[] = {
 	4600 ,
 };
 
-/*
- * This array maps the raw hex value to charger current used by the AB8500
- * Values taken from the UM0836
- */
-static int ab8500_charger_current_map[] = {
-	100 ,
-	200 ,
-	300 ,
-	400 ,
-	500 ,
-	600 ,
-	700 ,
-	800 ,
-	900 ,
-	1000 ,
-	1100 ,
-	1200 ,
-	1300 ,
-	1400 ,
-	1500 ,
-};
-
-/*
- * This array maps the raw hex value to VBUS input current used by the AB8500
- * Values taken from the UM0836
- */
-static int ab8500_charger_vbus_in_curr_map[] = {
-	USB_CH_IP_CUR_LVL_0P05,
-	USB_CH_IP_CUR_LVL_0P09,
-	USB_CH_IP_CUR_LVL_0P19,
-	USB_CH_IP_CUR_LVL_0P29,
-	USB_CH_IP_CUR_LVL_0P38,
-	USB_CH_IP_CUR_LVL_0P45,
-	USB_CH_IP_CUR_LVL_0P5,
-	USB_CH_IP_CUR_LVL_0P6,
-	USB_CH_IP_CUR_LVL_0P7,
-	USB_CH_IP_CUR_LVL_0P8,
-	USB_CH_IP_CUR_LVL_0P9,
-	USB_CH_IP_CUR_LVL_1P0,
-	USB_CH_IP_CUR_LVL_1P1,
-	USB_CH_IP_CUR_LVL_1P3,
-	USB_CH_IP_CUR_LVL_1P4,
-	USB_CH_IP_CUR_LVL_1P5,
-};
-
 static int ab8500_voltage_to_regval(int voltage)
 {
 	int i;
@@ -1026,41 +1002,41 @@ static int ab8500_voltage_to_regval(int voltage)
 		return -1;
 }
 
-static int ab8500_current_to_regval(int curr)
+static int ab8500_current_to_regval(struct ab8500_charger *di, int curr)
 {
 	int i;
 
-	if (curr < ab8500_charger_current_map[0])
+	if (curr < di->bm->chg_output_curr[0])
 		return 0;
 
-	for (i = 0; i < ARRAY_SIZE(ab8500_charger_current_map); i++) {
-		if (curr < ab8500_charger_current_map[i])
+	for (i = 0; i < di->bm->n_chg_out_curr; i++) {
+		if (curr < di->bm->chg_output_curr[i])
 			return i - 1;
 	}
 
 	/* If not last element, return error */
-	i = ARRAY_SIZE(ab8500_charger_current_map) - 1;
-	if (curr == ab8500_charger_current_map[i])
+	i = di->bm->n_chg_out_curr - 1;
+	if (curr == di->bm->chg_output_curr[i])
 		return i;
 	else
 		return -1;
 }
 
-static int ab8500_vbus_in_curr_to_regval(int curr)
+static int ab8500_vbus_in_curr_to_regval(struct ab8500_charger *di, int curr)
 {
 	int i;
 
-	if (curr < ab8500_charger_vbus_in_curr_map[0])
+	if (curr < di->bm->chg_input_curr[0])
 		return 0;
 
-	for (i = 0; i < ARRAY_SIZE(ab8500_charger_vbus_in_curr_map); i++) {
-		if (curr < ab8500_charger_vbus_in_curr_map[i])
+	for (i = 0; i < di->bm->n_chg_in_curr; i++) {
+		if (curr < di->bm->chg_input_curr[i])
 			return i - 1;
 	}
 
 	/* If not last element, return error */
-	i = ARRAY_SIZE(ab8500_charger_vbus_in_curr_map) - 1;
-	if (curr == ab8500_charger_vbus_in_curr_map[i])
+	i = di->bm->n_chg_in_curr - 1;
+	if (curr == di->bm->chg_input_curr[i])
 		return i;
 	else
 		return -1;
@@ -1077,28 +1053,48 @@ static int ab8500_vbus_in_curr_to_regval(int curr)
  */
 static int ab8500_charger_get_usb_cur(struct ab8500_charger *di)
 {
+	int ret = 0;
 	switch (di->usb_state.usb_current) {
 	case 100:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P09;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P09;
 		break;
 	case 200:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P19;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P19;
 		break;
 	case 300:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P29;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P29;
 		break;
 	case 400:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P38;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P38;
 		break;
 	case 500:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P5;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P5;
 		break;
 	default:
-		di->max_usb_in_curr = USB_CH_IP_CUR_LVL_0P05;
-		return -1;
+		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05;
+		ret = -EPERM;
 		break;
 	};
-	return 0;
+	di->max_usb_in_curr.set_max = di->max_usb_in_curr.usb_type_max;
+	return ret;
+}
+
+/**
+ * ab8500_charger_check_continue_stepping() - Check to allow stepping
+ * @di:		pointer to the ab8500_charger structure
+ * @reg:	select what charger register to check
+ *
+ * Check if current stepping should be allowed to continue.
+ * Checks if charger source has not collapsed. If it has, further stepping
+ * is not allowed.
+ */
+static bool ab8500_charger_check_continue_stepping(struct ab8500_charger *di,
+						   int reg)
+{
+	if (reg == AB8500_USBCH_IPT_CRNTLVL_REG)
+		return !di->flags.vbus_drop_end;
+	else
+		return true;
 }
 
 /**
@@ -1118,7 +1114,7 @@ static int ab8500_charger_set_current(struct ab8500_charger *di,
 	int ich, int reg)
 {
 	int ret = 0;
-	int auto_curr_index, curr_index, prev_curr_index, shift_value, i;
+	int curr_index, prev_curr_index, shift_value, i;
 	u8 reg_value;
 	u32 step_udelay;
 	bool no_stepping = false;
@@ -1136,39 +1132,27 @@ static int ab8500_charger_set_current(struct ab8500_charger *di,
 	case AB8500_MCH_IPT_CURLVL_REG:
 		shift_value = MAIN_CH_INPUT_CURR_SHIFT;
 		prev_curr_index = (reg_value >> shift_value);
-		curr_index = ab8500_current_to_regval(ich);
+		curr_index = ab8500_current_to_regval(di, ich);
 		step_udelay = STEP_UDELAY;
 		if (!di->ac.charger_connected)
 			no_stepping = true;
 		break;
 	case AB8500_USBCH_IPT_CRNTLVL_REG:
-		shift_value = VBUS_IN_CURR_LIM_SHIFT;
+		if (is_ab8540(di->parent))
+			shift_value = AB8540_VBUS_IN_CURR_LIM_SHIFT;
+		else
+			shift_value = VBUS_IN_CURR_LIM_SHIFT;
 		prev_curr_index = (reg_value >> shift_value);
-		curr_index = ab8500_vbus_in_curr_to_regval(ich);
+		curr_index = ab8500_vbus_in_curr_to_regval(di, ich);
 		step_udelay = STEP_UDELAY * 100;
 
-		ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
-					AB8500_CH_USBCH_STAT2_REG, &reg_value);
-		if (ret < 0) {
-			dev_err(di->dev, "%s read failed\n", __func__);
-			goto exit_set_current;
-		}
-		auto_curr_index =
-			reg_value >> AUTO_VBUS_IN_CURR_LIM_SHIFT;
-
-		dev_dbg(di->dev, "%s Auto VBUS curr is %d mA\n",
-			__func__,
-			ab8500_charger_vbus_in_curr_map[auto_curr_index]);
-
-		prev_curr_index = min(prev_curr_index, auto_curr_index);
-
 		if (!di->usb.charger_connected)
 			no_stepping = true;
 		break;
 	case AB8500_CH_OPT_CRNTLVL_REG:
 		shift_value = 0;
 		prev_curr_index = (reg_value >> shift_value);
-		curr_index = ab8500_current_to_regval(ich);
+		curr_index = ab8500_current_to_regval(di, ich);
 		step_udelay = STEP_UDELAY;
 		if (curr_index && (curr_index - prev_curr_index) > 1)
 			step_udelay *= 100;
@@ -1219,7 +1203,8 @@ static int ab8500_charger_set_current(struct ab8500_charger *di,
 				usleep_range(step_udelay, step_udelay * 2);
 		}
 	} else {
-		for (i = prev_curr_index + 1; i <= curr_index; i++) {
+		bool allow = true;
+		for (i = prev_curr_index + 1; i <= curr_index && allow; i++) {
 			dev_dbg(di->dev, "curr change_2 to: %x for 0x%02x\n",
 				(u8)i << shift_value, reg);
 			ret = abx500_set_register_interruptible(di->dev,
@@ -1230,6 +1215,8 @@ static int ab8500_charger_set_current(struct ab8500_charger *di,
 			}
 			if (i != curr_index)
 				usleep_range(step_udelay, step_udelay * 2);
+
+			allow = ab8500_charger_check_continue_stepping(di, reg);
 		}
 	}
 
@@ -1255,6 +1242,11 @@ static int ab8500_charger_set_vbus_in_curr(struct ab8500_charger *di,
 
 	/* We should always use to lowest current limit */
 	min_value = min(di->bm->chg_params->usb_curr_max, ich_in);
+	if (di->max_usb_in_curr.set_max > 0)
+		min_value = min(di->max_usb_in_curr.set_max, min_value);
+
+	if (di->usb_state.usb_current >= 0)
+		min_value = min(di->usb_state.usb_current, min_value);
 
 	switch (min_value) {
 	case 100:
@@ -1400,8 +1392,8 @@ static int ab8500_charger_ac_en(struct ux500_charger *charger,
 
 		/* Check if the requested voltage or current is valid */
 		volt_index = ab8500_voltage_to_regval(vset);
-		curr_index = ab8500_current_to_regval(iset);
-		input_curr_index = ab8500_current_to_regval(
+		curr_index = ab8500_current_to_regval(di, iset);
+		input_curr_index = ab8500_current_to_regval(di,
 			di->bm->chg_params->ac_curr_max);
 		if (volt_index < 0 || curr_index < 0 || input_curr_index < 0) {
 			dev_err(di->dev,
@@ -1572,7 +1564,7 @@ static int ab8500_charger_usb_en(struct ux500_charger *charger,
 
 		/* Check if the requested voltage or current is valid */
 		volt_index = ab8500_voltage_to_regval(vset);
-		curr_index = ab8500_current_to_regval(ich_out);
+		curr_index = ab8500_current_to_regval(di, ich_out);
 		if (volt_index < 0 || curr_index < 0) {
 			dev_err(di->dev,
 				"Charger voltage or current too high, "
@@ -1609,7 +1601,8 @@ static int ab8500_charger_usb_en(struct ux500_charger *charger,
 		di->usb.charger_online = 1;
 
 		/* USBChInputCurr: current that can be drawn from the usb */
-		ret = ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr);
+		ret = ab8500_charger_set_vbus_in_curr(di,
+					di->max_usb_in_curr.usb_type_max);
 		if (ret) {
 			dev_err(di->dev, "setting USBChInputCurr failed\n");
 			return ret;
@@ -1668,8 +1661,7 @@ static int ab8500_charger_usb_en(struct ux500_charger *charger,
 		dev_dbg(di->dev, "%s Disabled USB charging\n", __func__);
 
 		/* Cancel any pending Vbat check work */
-		if (delayed_work_pending(&di->check_vbat_work))
-			cancel_delayed_work(&di->check_vbat_work);
+		cancel_delayed_work(&di->check_vbat_work);
 
 	}
 	ab8500_power_supply_changed(di, &di->usb_chg.psy);
@@ -1677,6 +1669,128 @@ static int ab8500_charger_usb_en(struct ux500_charger *charger,
 	return ret;
 }
 
+static int ab8500_external_charger_prepare(struct notifier_block *charger_nb,
+				unsigned long event, void *data)
+{
+	int ret;
+	struct device *dev = data;
+	/*Toggle External charger control pin*/
+	ret = abx500_set_register_interruptible(dev, AB8500_SYS_CTRL1_BLOCK,
+				  AB8500_SYS_CHARGER_CONTROL_REG,
+				  EXTERNAL_CHARGER_DISABLE_REG_VAL);
+	if (ret < 0) {
+		dev_err(dev, "write reg failed %d\n", ret);
+		goto out;
+	}
+	ret = abx500_set_register_interruptible(dev, AB8500_SYS_CTRL1_BLOCK,
+				  AB8500_SYS_CHARGER_CONTROL_REG,
+				  EXTERNAL_CHARGER_ENABLE_REG_VAL);
+	if (ret < 0)
+		dev_err(dev, "Write reg failed %d\n", ret);
+
+out:
+	return ret;
+}
+
+/**
+ * ab8500_charger_usb_check_enable() - enable usb charging
+ * @charger:	pointer to the ux500_charger structure
+ * @vset:	charging voltage
+ * @iset:	charger output current
+ *
+ * Check if the VBUS charger has been disconnected and reconnected without
+ * AB8500 rising an interrupt. Returns 0 on success.
+ */
+static int ab8500_charger_usb_check_enable(struct ux500_charger *charger,
+	int vset, int iset)
+{
+	u8 usbch_ctrl1 = 0;
+	int ret = 0;
+
+	struct ab8500_charger *di = to_ab8500_charger_usb_device_info(charger);
+
+	if (!di->usb.charger_connected)
+		return ret;
+
+	ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+				AB8500_USBCH_CTRL1_REG, &usbch_ctrl1);
+	if (ret < 0) {
+		dev_err(di->dev, "ab8500 read failed %d\n", __LINE__);
+		return ret;
+	}
+	dev_dbg(di->dev, "USB charger ctrl: 0x%02x\n", usbch_ctrl1);
+
+	if (!(usbch_ctrl1 & USB_CH_ENA)) {
+		dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n");
+
+		ret = abx500_mask_and_set_register_interruptible(di->dev,
+					AB8500_CHARGER, AB8500_CHARGER_CTRL,
+					DROP_COUNT_RESET, DROP_COUNT_RESET);
+		if (ret < 0) {
+			dev_err(di->dev, "ab8500 write failed %d\n", __LINE__);
+			return ret;
+		}
+
+		ret = ab8500_charger_usb_en(&di->usb_chg, true, vset, iset);
+		if (ret < 0) {
+			dev_err(di->dev, "Failed to enable VBUS charger %d\n",
+					__LINE__);
+			return ret;
+		}
+	}
+	return ret;
+}
+
+/**
+ * ab8500_charger_ac_check_enable() - enable usb charging
+ * @charger:	pointer to the ux500_charger structure
+ * @vset:	charging voltage
+ * @iset:	charger output current
+ *
+ * Check if the AC charger has been disconnected and reconnected without
+ * AB8500 rising an interrupt. Returns 0 on success.
+ */
+static int ab8500_charger_ac_check_enable(struct ux500_charger *charger,
+	int vset, int iset)
+{
+	u8 mainch_ctrl1 = 0;
+	int ret = 0;
+
+	struct ab8500_charger *di = to_ab8500_charger_ac_device_info(charger);
+
+	if (!di->ac.charger_connected)
+		return ret;
+
+	ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+				AB8500_MCH_CTRL1, &mainch_ctrl1);
+	if (ret < 0) {
+		dev_err(di->dev, "ab8500 read failed %d\n", __LINE__);
+		return ret;
+	}
+	dev_dbg(di->dev, "AC charger ctrl: 0x%02x\n", mainch_ctrl1);
+
+	if (!(mainch_ctrl1 & MAIN_CH_ENA)) {
+		dev_info(di->dev, "Charging has been disabled abnormally and will be re-enabled\n");
+
+		ret = abx500_mask_and_set_register_interruptible(di->dev,
+					AB8500_CHARGER, AB8500_CHARGER_CTRL,
+					DROP_COUNT_RESET, DROP_COUNT_RESET);
+
+		if (ret < 0) {
+			dev_err(di->dev, "ab8500 write failed %d\n", __LINE__);
+			return ret;
+		}
+
+		ret = ab8500_charger_ac_en(&di->usb_chg, true, vset, iset);
+		if (ret < 0) {
+			dev_err(di->dev, "failed to enable AC charger %d\n",
+				__LINE__);
+			return ret;
+		}
+	}
+	return ret;
+}
+
 /**
  * ab8500_charger_watchdog_kick() - kick charger watchdog
  * @di:		pointer to the ab8500_charger structure
@@ -1734,8 +1848,68 @@ static int ab8500_charger_update_charger_current(struct ux500_charger *charger,
 
 	/* Reset the main and usb drop input current measurement counter */
 	ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
-				AB8500_CHARGER_CTRL,
-				0x1);
+				AB8500_CHARGER_CTRL, DROP_COUNT_RESET);
+	if (ret) {
+		dev_err(di->dev, "%s write failed\n", __func__);
+		return ret;
+	}
+
+	return ret;
+}
+
+/**
+ * ab8540_charger_power_path_enable() - enable usb power path mode
+ * @charger:	pointer to the ux500_charger structure
+ * @enable:	enable/disable flag
+ *
+ * Enable or disable the power path for usb mode
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8540_charger_power_path_enable(struct ux500_charger *charger,
+		bool enable)
+{
+	int ret;
+	struct ab8500_charger *di;
+
+	if (charger->psy.type == POWER_SUPPLY_TYPE_USB)
+		di = to_ab8500_charger_usb_device_info(charger);
+	else
+		return -ENXIO;
+
+	ret = abx500_mask_and_set_register_interruptible(di->dev,
+				AB8500_CHARGER, AB8540_USB_PP_MODE_REG,
+				BUS_POWER_PATH_MODE_ENA, enable);
+	if (ret) {
+		dev_err(di->dev, "%s write failed\n", __func__);
+		return ret;
+	}
+
+	return ret;
+}
+
+
+/**
+ * ab8540_charger_usb_pre_chg_enable() - enable usb pre change
+ * @charger:	pointer to the ux500_charger structure
+ * @enable:	enable/disable flag
+ *
+ * Enable or disable the pre-chage for usb mode
+ * Returns error code in case of failure else 0(on success)
+ */
+static int ab8540_charger_usb_pre_chg_enable(struct ux500_charger *charger,
+		bool enable)
+{
+	int ret;
+	struct ab8500_charger *di;
+
+	if (charger->psy.type == POWER_SUPPLY_TYPE_USB)
+		di = to_ab8500_charger_usb_device_info(charger);
+	else
+		return -ENXIO;
+
+	ret = abx500_mask_and_set_register_interruptible(di->dev,
+				AB8500_CHARGER, AB8540_USB_PP_CHR_REG,
+				BUS_POWER_PATH_PRECHG_ENA, enable);
 	if (ret) {
 		dev_err(di->dev, "%s write failed\n", __func__);
 		return ret;
@@ -1823,9 +1997,10 @@ static void ab8500_charger_check_vbat_work(struct work_struct *work)
 		di->vbat > VBAT_TRESH_IP_CUR_RED))) {
 
 		dev_dbg(di->dev, "Vbat did cross threshold, curr: %d, new: %d,"
-			" old: %d\n", di->max_usb_in_curr, di->vbat,
-			di->old_vbat);
-		ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr);
+			" old: %d\n", di->max_usb_in_curr.usb_type_max,
+			di->vbat, di->old_vbat);
+		ab8500_charger_set_vbus_in_curr(di,
+					di->max_usb_in_curr.usb_type_max);
 		power_supply_changed(&di->usb_chg.psy);
 	}
 
@@ -2105,7 +2280,8 @@ static void ab8500_charger_usb_link_attach_work(struct work_struct *work)
 
 	/* Update maximum input current if USB enumeration is not detected */
 	if (!di->usb.charger_online) {
-		ret = ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr);
+		ret = ab8500_charger_set_vbus_in_curr(di,
+					di->max_usb_in_curr.usb_type_max);
 		if (ret)
 			return;
 	}
@@ -2125,6 +2301,7 @@ static void ab8500_charger_usb_link_status_work(struct work_struct *work)
 	int detected_chargers;
 	int ret;
 	u8 val;
+	u8 link_status;
 
 	struct ab8500_charger *di = container_of(work,
 		struct ab8500_charger, usb_link_status_work);
@@ -2144,38 +2321,61 @@ static void ab8500_charger_usb_link_status_work(struct work_struct *work)
 	 * to start the charging process. but by jumping
 	 * thru a few hoops it can be forced to start.
 	 */
-	ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
-			AB8500_USB_LINE_STAT_REG, &val);
+	if (is_ab8500(di->parent))
+		ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
+					AB8500_USB_LINE_STAT_REG, &val);
+	else
+		ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
+					AB8500_USB_LINK1_STAT_REG, &val);
+
 	if (ret >= 0)
 		dev_dbg(di->dev, "UsbLineStatus register = 0x%02x\n", val);
 	else
 		dev_dbg(di->dev, "Error reading USB link status\n");
 
+	if (is_ab8500(di->parent))
+		link_status = AB8500_USB_LINK_STATUS;
+	else
+		link_status = AB8505_USB_LINK_STATUS;
+
 	if (detected_chargers & USB_PW_CONN) {
-		if (((val & AB8500_USB_LINK_STATUS) >> 3) == USB_STAT_NOT_VALID_LINK &&
+		if (((val & link_status) >> USB_LINK_STATUS_SHIFT) ==
+				USB_STAT_NOT_VALID_LINK &&
 				di->invalid_charger_detect_state == 0) {
-			dev_dbg(di->dev, "Invalid charger detected, state= 0\n");
+			dev_dbg(di->dev,
+					"Invalid charger detected, state= 0\n");
 			/*Enable charger*/
 			abx500_mask_and_set_register_interruptible(di->dev,
-					AB8500_CHARGER, AB8500_USBCH_CTRL1_REG, 0x01, 0x01);
+					AB8500_CHARGER, AB8500_USBCH_CTRL1_REG,
+					USB_CH_ENA, USB_CH_ENA);
 			/*Enable charger detection*/
-			abx500_mask_and_set_register_interruptible(di->dev, AB8500_USB,
-					AB8500_MCH_IPT_CURLVL_REG, 0x01, 0x01);
+			abx500_mask_and_set_register_interruptible(di->dev,
+					AB8500_USB, AB8500_USB_LINE_CTRL2_REG,
+					USB_CH_DET, USB_CH_DET);
 			di->invalid_charger_detect_state = 1;
 			/*exit and wait for new link status interrupt.*/
 			return;
 
 		}
 		if (di->invalid_charger_detect_state == 1) {
-			dev_dbg(di->dev, "Invalid charger detected, state= 1\n");
+			dev_dbg(di->dev,
+					"Invalid charger detected, state= 1\n");
 			/*Stop charger detection*/
-			abx500_mask_and_set_register_interruptible(di->dev, AB8500_USB,
-					AB8500_MCH_IPT_CURLVL_REG, 0x01, 0x00);
+			abx500_mask_and_set_register_interruptible(di->dev,
+					AB8500_USB, AB8500_USB_LINE_CTRL2_REG,
+					USB_CH_DET, 0x00);
 			/*Check link status*/
-			ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
-					AB8500_USB_LINE_STAT_REG, &val);
+			if (is_ab8500(di->parent))
+				ret = abx500_get_register_interruptible(di->dev,
+					AB8500_USB, AB8500_USB_LINE_STAT_REG,
+					&val);
+			else
+				ret = abx500_get_register_interruptible(di->dev,
+					AB8500_USB, AB8500_USB_LINK1_STAT_REG,
+					&val);
+
 			dev_dbg(di->dev, "USB link status= 0x%02x\n",
-					(val & AB8500_USB_LINK_STATUS) >> 3);
+				(val & link_status) >> USB_LINK_STATUS_SHIFT);
 			di->invalid_charger_detect_state = 2;
 		}
 	} else {
@@ -2273,7 +2473,7 @@ static void ab8500_charger_usb_state_changed_work(struct work_struct *work)
 		if (!ab8500_charger_get_usb_cur(di)) {
 			/* Update maximum input current */
 			ret = ab8500_charger_set_vbus_in_curr(di,
-					di->max_usb_in_curr);
+					di->max_usb_in_curr.usb_type_max);
 			if (ret)
 				return;
 
@@ -2422,7 +2622,9 @@ static irqreturn_t ab8500_charger_mainchplugdet_handler(int irq, void *_di)
 
 	mutex_lock(&di->charger_attached_mutex);
 	mutex_unlock(&di->charger_attached_mutex);
-	queue_delayed_work(di->charger_wq,
+
+	if (is_ab8500(di->parent))
+		queue_delayed_work(di->charger_wq,
 			   &di->ac_charger_attached_work,
 			   HZ);
 	return IRQ_HANDLED;
@@ -2491,6 +2693,8 @@ static void ab8500_charger_vbus_drop_end_work(struct work_struct *work)
 {
 	struct ab8500_charger *di = container_of(work,
 		struct ab8500_charger, vbus_drop_end_work.work);
+	int ret, curr;
+	u8 reg_value;
 
 	di->flags.vbus_drop_end = false;
 
@@ -2498,8 +2702,45 @@ static void ab8500_charger_vbus_drop_end_work(struct work_struct *work)
 	abx500_set_register_interruptible(di->dev,
 				  AB8500_CHARGER, AB8500_CHARGER_CTRL, 0x01);
 
+	if (is_ab8540(di->parent))
+		ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+				AB8540_CH_USBCH_STAT3_REG, &reg_value);
+	else
+		ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+				AB8500_CH_USBCH_STAT2_REG, &reg_value);
+	if (ret < 0) {
+		dev_err(di->dev, "%s read failed\n", __func__);
+		return;
+	}
+
+	if (is_ab8540(di->parent))
+		curr = di->bm->chg_input_curr[
+			reg_value & AB8540_AUTO_VBUS_IN_CURR_MASK];
+	else
+		curr = di->bm->chg_input_curr[
+			reg_value >> AUTO_VBUS_IN_CURR_LIM_SHIFT];
+
+	if (di->max_usb_in_curr.calculated_max != curr) {
+		/* USB source is collapsing */
+		di->max_usb_in_curr.calculated_max = curr;
+		dev_dbg(di->dev,
+			 "VBUS input current limiting to %d mA\n",
+			 di->max_usb_in_curr.calculated_max);
+	} else {
+		/*
+		 * USB source can not give more than this amount.
+		 * Taking more will collapse the source.
+		 */
+		di->max_usb_in_curr.set_max =
+			di->max_usb_in_curr.calculated_max;
+		dev_dbg(di->dev,
+			 "VBUS input current limited to %d mA\n",
+			 di->max_usb_in_curr.set_max);
+	}
+
 	if (di->usb.charger_connected)
-		ab8500_charger_set_vbus_in_curr(di, di->max_usb_in_curr);
+		ab8500_charger_set_vbus_in_curr(di,
+					di->max_usb_in_curr.usb_type_max);
 }
 
 /**
@@ -2654,8 +2895,13 @@ static irqreturn_t ab8500_charger_vbuschdropend_handler(int irq, void *_di)
 
 	dev_dbg(di->dev, "VBUS charger drop ended\n");
 	di->flags.vbus_drop_end = true;
+
+	/*
+	 * VBUS might have dropped due to bad connection.
+	 * Schedule a new input limit set to the value SW requests.
+	 */
 	queue_delayed_work(di->charger_wq, &di->vbus_drop_end_work,
-			   round_jiffies(30 * HZ));
+			   round_jiffies(VBUS_IN_CURR_LIM_RETRY_SET_TIME * HZ));
 
 	return IRQ_HANDLED;
 }
@@ -2836,6 +3082,7 @@ static int ab8500_charger_usb_get_property(struct power_supply *psy,
 static int ab8500_charger_init_hw_registers(struct ab8500_charger *di)
 {
 	int ret = 0;
+	u8 bup_vch_range = 0, vbup33_vrtcn = 0;
 
 	/* Setup maximum charger current and voltage for ABB cut2.0 */
 	if (!is_ab8500_1p1_or_earlier(di->parent)) {
@@ -2848,9 +3095,14 @@ static int ab8500_charger_init_hw_registers(struct ab8500_charger *di)
 			goto out;
 		}
 
-		ret = abx500_set_register_interruptible(di->dev,
-			AB8500_CHARGER,
-			AB8500_CH_OPT_CRNTLVL_MAX_REG, CH_OP_CUR_LVL_1P6);
+		if (is_ab8540(di->parent))
+			ret = abx500_set_register_interruptible(di->dev,
+				AB8500_CHARGER, AB8500_CH_OPT_CRNTLVL_MAX_REG,
+				CH_OP_CUR_LVL_2P);
+		else
+			ret = abx500_set_register_interruptible(di->dev,
+				AB8500_CHARGER, AB8500_CH_OPT_CRNTLVL_MAX_REG,
+				CH_OP_CUR_LVL_1P6);
 		if (ret) {
 			dev_err(di->dev,
 				"failed to set CH_OPT_CRNTLVL_MAX_REG\n");
@@ -2858,7 +3110,8 @@ static int ab8500_charger_init_hw_registers(struct ab8500_charger *di)
 		}
 	}
 
-	if (is_ab9540_2p0(di->parent) || is_ab8505_2p0(di->parent))
+	if (is_ab9540_2p0(di->parent) || is_ab9540_3p0(di->parent)
+	 || is_ab8505_2p0(di->parent) || is_ab8540(di->parent))
 		ret = abx500_mask_and_set_register_interruptible(di->dev,
 			AB8500_CHARGER,
 			AB8500_USBCH_CTRL2_REG,
@@ -2930,14 +3183,6 @@ static int ab8500_charger_init_hw_registers(struct ab8500_charger *di)
 		goto out;
 	}
 
-	/* Set charger watchdog timeout */
-	ret = abx500_set_register_interruptible(di->dev, AB8500_CHARGER,
-		AB8500_CH_WD_TIMER_REG, WD_TIMER);
-	if (ret) {
-		dev_err(di->dev, "failed to set charger watchdog timeout\n");
-		goto out;
-	}
-
 	ret = ab8500_charger_led_en(di, false);
 	if (ret < 0) {
 		dev_err(di->dev, "failed to disable LED\n");
@@ -2945,15 +3190,30 @@ static int ab8500_charger_init_hw_registers(struct ab8500_charger *di)
 	}
 
 	/* Backup battery voltage and current */
+	if (di->bm->bkup_bat_v > BUP_VCH_SEL_3P1V)
+		bup_vch_range = BUP_VCH_RANGE;
+	if (di->bm->bkup_bat_v == BUP_VCH_SEL_3P3V)
+		vbup33_vrtcn = VBUP33_VRTCN;
+
 	ret = abx500_set_register_interruptible(di->dev,
 		AB8500_RTC,
 		AB8500_RTC_BACKUP_CHG_REG,
-		di->bm->bkup_bat_v |
-		di->bm->bkup_bat_i);
+		(di->bm->bkup_bat_v & 0x3) | di->bm->bkup_bat_i);
 	if (ret) {
 		dev_err(di->dev, "failed to setup backup battery charging\n");
 		goto out;
 	}
+	if (is_ab8540(di->parent)) {
+		ret = abx500_set_register_interruptible(di->dev,
+			AB8500_RTC,
+			AB8500_RTC_CTRL1_REG,
+			bup_vch_range | vbup33_vrtcn);
+		if (ret) {
+			dev_err(di->dev,
+				"failed to setup backup battery charging\n");
+			goto out;
+		}
+	}
 
 	/* Enable backup battery charging */
 	abx500_mask_and_set_register_interruptible(di->dev,
@@ -2962,6 +3222,25 @@ static int ab8500_charger_init_hw_registers(struct ab8500_charger *di)
 	if (ret < 0)
 		dev_err(di->dev, "%s mask and set failed\n", __func__);
 
+	if (is_ab8540(di->parent)) {
+		ret = abx500_mask_and_set_register_interruptible(di->dev,
+			AB8500_CHARGER, AB8540_USB_PP_MODE_REG,
+			BUS_VSYS_VOL_SELECT_MASK, BUS_VSYS_VOL_SELECT_3P6V);
+		if (ret) {
+			dev_err(di->dev,
+				"failed to setup usb power path vsys voltage\n");
+			goto out;
+		}
+		ret = abx500_mask_and_set_register_interruptible(di->dev,
+			AB8500_CHARGER, AB8540_USB_PP_CHR_REG,
+			BUS_PP_PRECHG_CURRENT_MASK, 0);
+		if (ret) {
+			dev_err(di->dev,
+				"failed to setup usb power path prechage current\n");
+			goto out;
+		}
+	}
+
 out:
 	return ret;
 }
@@ -3055,11 +3334,8 @@ static int ab8500_charger_resume(struct platform_device *pdev)
 			dev_err(di->dev, "Failed to kick WD!\n");
 
 		/* If not already pending start a new timer */
-		if (!delayed_work_pending(
-			&di->kick_wd_work)) {
-			queue_delayed_work(di->charger_wq, &di->kick_wd_work,
-				round_jiffies(WD_KICK_INTERVAL));
-		}
+		queue_delayed_work(di->charger_wq, &di->kick_wd_work,
+				   round_jiffies(WD_KICK_INTERVAL));
 	}
 
 	/* If we still have a HW failure, schedule a new check */
@@ -3079,12 +3355,9 @@ static int ab8500_charger_suspend(struct platform_device *pdev,
 {
 	struct ab8500_charger *di = platform_get_drvdata(pdev);
 
-	/* Cancel any pending HW failure check */
-	if (delayed_work_pending(&di->check_hw_failure_work))
-		cancel_delayed_work(&di->check_hw_failure_work);
-
-	if (delayed_work_pending(&di->vbus_drop_end_work))
-		cancel_delayed_work(&di->vbus_drop_end_work);
+	/* Cancel any pending jobs */
+	cancel_delayed_work(&di->check_hw_failure_work);
+	cancel_delayed_work(&di->vbus_drop_end_work);
 
 	flush_delayed_work(&di->attach_work);
 	flush_delayed_work(&di->usb_charger_attached_work);
@@ -3107,6 +3380,10 @@ static int ab8500_charger_suspend(struct platform_device *pdev,
 #define ab8500_charger_resume       NULL
 #endif
 
+static struct notifier_block charger_nb = {
+	.notifier_call = ab8500_external_charger_prepare,
+};
+
 static int ab8500_charger_remove(struct platform_device *pdev)
 {
 	struct ab8500_charger *di = platform_get_drvdata(pdev);
@@ -3136,13 +3413,18 @@ static int ab8500_charger_remove(struct platform_device *pdev)
 	/* Delete the work queue */
 	destroy_workqueue(di->charger_wq);
 
+	/* Unregister external charger enable notifier */
+	if (!di->ac_chg.enabled)
+		blocking_notifier_chain_unregister(
+			&charger_notifier_list, &charger_nb);
+
 	flush_scheduled_work();
-	if(di->usb_chg.enabled)
+	if (di->usb_chg.enabled)
 		power_supply_unregister(&di->usb_chg.psy);
-#if !defined(CONFIG_CHARGER_PM2301)
-	if(di->ac_chg.enabled)
+
+	if (di->ac_chg.enabled && !di->ac_chg.external)
 		power_supply_unregister(&di->ac_chg.psy);
-#endif
+
 	platform_set_drvdata(pdev, NULL);
 
 	return 0;
@@ -3206,16 +3488,22 @@ static int ab8500_charger_probe(struct platform_device *pdev)
 	di->ac_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface),
 	/* ux500_charger sub-class */
 	di->ac_chg.ops.enable = &ab8500_charger_ac_en;
+	di->ac_chg.ops.check_enable = &ab8500_charger_ac_check_enable;
 	di->ac_chg.ops.kick_wd = &ab8500_charger_watchdog_kick;
 	di->ac_chg.ops.update_curr = &ab8500_charger_update_charger_current;
 	di->ac_chg.max_out_volt = ab8500_charger_voltage_map[
 		ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
-	di->ac_chg.max_out_curr = ab8500_charger_current_map[
-		ARRAY_SIZE(ab8500_charger_current_map) - 1];
+	di->ac_chg.max_out_curr =
+		di->bm->chg_output_curr[di->bm->n_chg_out_curr - 1];
 	di->ac_chg.wdt_refresh = CHG_WD_INTERVAL;
 	di->ac_chg.enabled = di->bm->ac_enabled;
 	di->ac_chg.external = false;
 
+	/*notifier for external charger enabling*/
+	if (!di->ac_chg.enabled)
+		blocking_notifier_chain_register(
+			&charger_notifier_list, &charger_nb);
+
 	/* USB supply */
 	/* power_supply base class */
 	di->usb_chg.psy.name = "ab8500_usb";
@@ -3227,15 +3515,20 @@ static int ab8500_charger_probe(struct platform_device *pdev)
 	di->usb_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface),
 	/* ux500_charger sub-class */
 	di->usb_chg.ops.enable = &ab8500_charger_usb_en;
+	di->usb_chg.ops.check_enable = &ab8500_charger_usb_check_enable;
 	di->usb_chg.ops.kick_wd = &ab8500_charger_watchdog_kick;
 	di->usb_chg.ops.update_curr = &ab8500_charger_update_charger_current;
+	di->usb_chg.ops.pp_enable = &ab8540_charger_power_path_enable;
+	di->usb_chg.ops.pre_chg_enable = &ab8540_charger_usb_pre_chg_enable;
 	di->usb_chg.max_out_volt = ab8500_charger_voltage_map[
 		ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
-	di->usb_chg.max_out_curr = ab8500_charger_current_map[
-		ARRAY_SIZE(ab8500_charger_current_map) - 1];
+	di->usb_chg.max_out_curr =
+		di->bm->chg_output_curr[di->bm->n_chg_out_curr - 1];
 	di->usb_chg.wdt_refresh = CHG_WD_INTERVAL;
 	di->usb_chg.enabled = di->bm->usb_enabled;
 	di->usb_chg.external = false;
+	di->usb_chg.power_path = di->bm->usb_power_path;
+	di->usb_state.usb_current = -1;
 
 	/* Create a work queue for the charger */
 	di->charger_wq =
@@ -3316,7 +3609,7 @@ static int ab8500_charger_probe(struct platform_device *pdev)
 	}
 
 	/* Register AC charger class */
-	if(di->ac_chg.enabled) {
+	if (di->ac_chg.enabled) {
 		ret = power_supply_register(di->dev, &di->ac_chg.psy);
 		if (ret) {
 			dev_err(di->dev, "failed to register AC charger\n");
@@ -3325,7 +3618,7 @@ static int ab8500_charger_probe(struct platform_device *pdev)
 	}
 
 	/* Register USB charger class */
-	if(di->usb_chg.enabled) {
+	if (di->usb_chg.enabled) {
 		ret = power_supply_register(di->dev, &di->usb_chg.psy);
 		if (ret) {
 			dev_err(di->dev, "failed to register USB charger\n");
@@ -3385,14 +3678,16 @@ static int ab8500_charger_probe(struct platform_device *pdev)
 	ch_stat = ab8500_charger_detect_chargers(di, false);
 
 	if ((ch_stat & AC_PW_CONN) == AC_PW_CONN) {
-		queue_delayed_work(di->charger_wq,
-				   &di->ac_charger_attached_work,
-				   HZ);
+		if (is_ab8500(di->parent))
+			queue_delayed_work(di->charger_wq,
+					   &di->ac_charger_attached_work,
+					   HZ);
 	}
 	if ((ch_stat & USB_PW_CONN) == USB_PW_CONN) {
-		queue_delayed_work(di->charger_wq,
-				   &di->usb_charger_attached_work,
-				   HZ);
+		if (is_ab8500(di->parent))
+			queue_delayed_work(di->charger_wq,
+					   &di->usb_charger_attached_work,
+					   HZ);
 	}
 
 	mutex_unlock(&di->charger_attached_mutex);
@@ -3410,10 +3705,10 @@ free_irq:
 put_usb_phy:
 	usb_put_phy(di->usb_phy);
 free_usb:
-	if(di->usb_chg.enabled)
+	if (di->usb_chg.enabled)
 		power_supply_unregister(&di->usb_chg.psy);
 free_ac:
-	if(di->ac_chg.enabled)
+	if (di->ac_chg.enabled)
 		power_supply_unregister(&di->ac_chg.psy);
 free_charger_wq:
 	destroy_workqueue(di->charger_wq);
diff --git a/drivers/power/ab8500_fg.c b/drivers/power/ab8500_fg.c
index 25dae4c4b0ef..c5391f5c372d 100644
--- a/drivers/power/ab8500_fg.c
+++ b/drivers/power/ab8500_fg.c
@@ -36,7 +36,7 @@
 
 #define MILLI_TO_MICRO			1000
 #define FG_LSB_IN_MA			1627
-#define QLSB_NANO_AMP_HOURS_X10		1129
+#define QLSB_NANO_AMP_HOURS_X10		1071
 #define INS_CURR_TIMEOUT		(3 * HZ)
 
 #define SEC_TO_SAMPLE(S)		(S * 4)
@@ -672,11 +672,11 @@ int ab8500_fg_inst_curr_finalize(struct ab8500_fg *di, int *res)
 	/*
 	 * Convert to unit value in mA
 	 * Full scale input voltage is
-	 * 66.660mV => LSB = 66.660mV/(4096*res) = 1.627mA
+	 * 63.160mV => LSB = 63.160mV/(4096*res) = 1.542mA
 	 * Given a 250ms conversion cycle time the LSB corresponds
-	 * to 112.9 nAh. Convert to current by dividing by the conversion
+	 * to 107.1 nAh. Convert to current by dividing by the conversion
 	 * time in hours (250ms = 1 / (3600 * 4)h)
-	 * 112.9nAh assumes 10mOhm, but fg_res is in 0.1mOhm
+	 * 107.1nAh assumes 10mOhm, but fg_res is in 0.1mOhm
 	 */
 	val = (val * QLSB_NANO_AMP_HOURS_X10 * 36 * 4) /
 		(1000 * di->bm->fg_res);
@@ -863,7 +863,7 @@ static int ab8500_fg_bat_voltage(struct ab8500_fg *di)
 static int ab8500_fg_volt_to_capacity(struct ab8500_fg *di, int voltage)
 {
 	int i, tbl_size;
-	struct abx500_v_to_cap *tbl;
+	const struct abx500_v_to_cap *tbl;
 	int cap = 0;
 
 	tbl = di->bm->bat_type[di->bm->batt_id].v_to_cap_tbl,
@@ -915,7 +915,7 @@ static int ab8500_fg_uncomp_volt_to_capacity(struct ab8500_fg *di)
 static int ab8500_fg_battery_resistance(struct ab8500_fg *di)
 {
 	int i, tbl_size;
-	struct batres_vs_temp *tbl;
+	const struct batres_vs_temp *tbl;
 	int resist = 0;
 
 	tbl = di->bm->bat_type[di->bm->batt_id].batres_tbl;
@@ -1354,9 +1354,6 @@ static void ab8500_fg_check_capacity_limits(struct ab8500_fg *di, bool init)
 			 * algorithm says.
 			 */
 			di->bat_cap.prev_percent = 1;
-			di->bat_cap.permille = 1;
-			di->bat_cap.prev_mah = 1;
-			di->bat_cap.mah = 1;
 			percent = 1;
 
 			changed = true;
@@ -1683,7 +1680,6 @@ static void ab8500_fg_algorithm_discharging(struct ab8500_fg *di)
 		break;
 
 	case AB8500_FG_DISCHARGE_WAKEUP:
-		ab8500_fg_coulomb_counter(di, true);
 		ab8500_fg_calc_cap_discharge_voltage(di, true);
 
 		di->fg_samples = SEC_TO_SAMPLE(
@@ -1768,9 +1764,10 @@ static void ab8500_fg_algorithm(struct ab8500_fg *di)
 			ab8500_fg_algorithm_discharging(di);
 	}
 
-	dev_dbg(di->dev, "[FG_DATA] %d %d %d %d %d %d %d %d %d "
+	dev_dbg(di->dev, "[FG_DATA] %d %d %d %d %d %d %d %d %d %d "
 		"%d %d %d %d %d %d %d\n",
 		di->bat_cap.max_mah_design,
+		di->bat_cap.max_mah,
 		di->bat_cap.mah,
 		di->bat_cap.permille,
 		di->bat_cap.level,
@@ -1982,7 +1979,7 @@ static void ab8500_fg_instant_work(struct work_struct *work)
 }
 
 /**
- * ab8500_fg_cc_data_end_handler() - isr to get battery avg current.
+ * ab8500_fg_cc_data_end_handler() - end of data conversion isr.
  * @irq:       interrupt number
  * @_di:       pointer to the ab8500_fg structure
  *
@@ -2002,7 +1999,7 @@ static irqreturn_t ab8500_fg_cc_data_end_handler(int irq, void *_di)
 }
 
 /**
- * ab8500_fg_cc_convend_handler() - isr to get battery avg current.
+ * ab8500_fg_cc_int_calib_handler () - end of calibration isr.
  * @irq:       interrupt number
  * @_di:       pointer to the ab8500_fg structure
  *
@@ -2153,9 +2150,7 @@ static int ab8500_fg_get_property(struct power_supply *psy,
 			val->intval = di->bat_cap.prev_mah;
 		break;
 	case POWER_SUPPLY_PROP_CAPACITY:
-		if (di->bm->capacity_scaling)
-			val->intval = di->bat_cap.cap_scale.scaled_cap;
-		else if (di->flags.batt_unknown && !di->bm->chg_unknown_bat &&
+		if (di->flags.batt_unknown && !di->bm->chg_unknown_bat &&
 				di->flags.batt_id_received)
 			val->intval = 100;
 		else
@@ -2344,6 +2339,50 @@ static int ab8500_fg_init_hw_registers(struct ab8500_fg *di)
 		dev_err(di->dev, "BattOk init write failed.\n");
 		goto out;
 	}
+
+	if (((is_ab8505(di->parent) || is_ab9540(di->parent)) &&
+			abx500_get_chip_id(di->dev) >= AB8500_CUT2P0)
+			|| is_ab8540(di->parent)) {
+		ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+			AB8505_RTC_PCUT_MAX_TIME_REG, di->bm->fg_params->pcut_max_time);
+
+		if (ret) {
+			dev_err(di->dev, "%s write failed AB8505_RTC_PCUT_MAX_TIME_REG\n", __func__);
+			goto out;
+		};
+
+		ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+			AB8505_RTC_PCUT_FLAG_TIME_REG, di->bm->fg_params->pcut_flag_time);
+
+		if (ret) {
+			dev_err(di->dev, "%s write failed AB8505_RTC_PCUT_FLAG_TIME_REG\n", __func__);
+			goto out;
+		};
+
+		ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+			AB8505_RTC_PCUT_RESTART_REG, di->bm->fg_params->pcut_max_restart);
+
+		if (ret) {
+			dev_err(di->dev, "%s write failed AB8505_RTC_PCUT_RESTART_REG\n", __func__);
+			goto out;
+		};
+
+		ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+			AB8505_RTC_PCUT_DEBOUNCE_REG, di->bm->fg_params->pcut_debounce_time);
+
+		if (ret) {
+			dev_err(di->dev, "%s write failed AB8505_RTC_PCUT_DEBOUNCE_REG\n", __func__);
+			goto out;
+		};
+
+		ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+			AB8505_RTC_PCUT_CTL_STATUS_REG, di->bm->fg_params->pcut_enable);
+
+		if (ret) {
+			dev_err(di->dev, "%s write failed AB8505_RTC_PCUT_CTL_STATUS_REG\n", __func__);
+			goto out;
+		};
+	}
 out:
 	return ret;
 }
@@ -2546,6 +2585,428 @@ static int ab8500_fg_sysfs_init(struct ab8500_fg *di)
 
 	return ret;
 }
+
+static ssize_t ab8505_powercut_flagtime_read(struct device *dev,
+			     struct device_attribute *attr,
+			     char *buf)
+{
+	int ret;
+	u8 reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+		AB8505_RTC_PCUT_FLAG_TIME_REG, &reg_value);
+
+	if (ret < 0) {
+		dev_err(dev, "Failed to read AB8505_RTC_PCUT_FLAG_TIME_REG\n");
+		goto fail;
+	}
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+
+fail:
+	return ret;
+}
+
+static ssize_t ab8505_powercut_flagtime_write(struct device *dev,
+				  struct device_attribute *attr,
+				  const char *buf, size_t count)
+{
+	int ret;
+	long unsigned reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	reg_value = simple_strtoul(buf, NULL, 10);
+
+	if (reg_value > 0x7F) {
+		dev_err(dev, "Incorrect parameter, echo 0 (1.98s) - 127 (15.625ms) for flagtime\n");
+		goto fail;
+	}
+
+	ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+		AB8505_RTC_PCUT_FLAG_TIME_REG, (u8)reg_value);
+
+	if (ret < 0)
+		dev_err(dev, "Failed to set AB8505_RTC_PCUT_FLAG_TIME_REG\n");
+
+fail:
+	return count;
+}
+
+static ssize_t ab8505_powercut_maxtime_read(struct device *dev,
+			     struct device_attribute *attr,
+			     char *buf)
+{
+	int ret;
+	u8 reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+		AB8505_RTC_PCUT_MAX_TIME_REG, &reg_value);
+
+	if (ret < 0) {
+		dev_err(dev, "Failed to read AB8505_RTC_PCUT_MAX_TIME_REG\n");
+		goto fail;
+	}
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+
+fail:
+	return ret;
+
+}
+
+static ssize_t ab8505_powercut_maxtime_write(struct device *dev,
+				  struct device_attribute *attr,
+				  const char *buf, size_t count)
+{
+	int ret;
+	int reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	reg_value = simple_strtoul(buf, NULL, 10);
+	if (reg_value > 0x7F) {
+		dev_err(dev, "Incorrect parameter, echo 0 (0.0s) - 127 (1.98s) for maxtime\n");
+		goto fail;
+	}
+
+	ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+		AB8505_RTC_PCUT_MAX_TIME_REG, (u8)reg_value);
+
+	if (ret < 0)
+		dev_err(dev, "Failed to set AB8505_RTC_PCUT_MAX_TIME_REG\n");
+
+fail:
+	return count;
+}
+
+static ssize_t ab8505_powercut_restart_read(struct device *dev,
+			     struct device_attribute *attr,
+			     char *buf)
+{
+	int ret;
+	u8 reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+		AB8505_RTC_PCUT_RESTART_REG, &reg_value);
+
+	if (ret < 0) {
+		dev_err(dev, "Failed to read AB8505_RTC_PCUT_RESTART_REG\n");
+		goto fail;
+	}
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0xF));
+
+fail:
+	return ret;
+}
+
+static ssize_t ab8505_powercut_restart_write(struct device *dev,
+					     struct device_attribute *attr,
+					     const char *buf, size_t count)
+{
+	int ret;
+	int reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	reg_value = simple_strtoul(buf, NULL, 10);
+	if (reg_value > 0xF) {
+		dev_err(dev, "Incorrect parameter, echo 0 - 15 for number of restart\n");
+		goto fail;
+	}
+
+	ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+						AB8505_RTC_PCUT_RESTART_REG, (u8)reg_value);
+
+	if (ret < 0)
+		dev_err(dev, "Failed to set AB8505_RTC_PCUT_RESTART_REG\n");
+
+fail:
+	return count;
+
+}
+
+static ssize_t ab8505_powercut_timer_read(struct device *dev,
+					  struct device_attribute *attr,
+					  char *buf)
+{
+	int ret;
+	u8 reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+						AB8505_RTC_PCUT_TIME_REG, &reg_value);
+
+	if (ret < 0) {
+		dev_err(dev, "Failed to read AB8505_RTC_PCUT_TIME_REG\n");
+		goto fail;
+	}
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+
+fail:
+	return ret;
+}
+
+static ssize_t ab8505_powercut_restart_counter_read(struct device *dev,
+						    struct device_attribute *attr,
+						    char *buf)
+{
+	int ret;
+	u8 reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+						AB8505_RTC_PCUT_RESTART_REG, &reg_value);
+
+	if (ret < 0) {
+		dev_err(dev, "Failed to read AB8505_RTC_PCUT_RESTART_REG\n");
+		goto fail;
+	}
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0xF0) >> 4);
+
+fail:
+	return ret;
+}
+
+static ssize_t ab8505_powercut_read(struct device *dev,
+				    struct device_attribute *attr,
+				    char *buf)
+{
+	int ret;
+	u8 reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+						AB8505_RTC_PCUT_CTL_STATUS_REG, &reg_value);
+
+	if (ret < 0)
+		goto fail;
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x1));
+
+fail:
+	return ret;
+}
+
+static ssize_t ab8505_powercut_write(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t count)
+{
+	int ret;
+	int reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	reg_value = simple_strtoul(buf, NULL, 10);
+	if (reg_value > 0x1) {
+		dev_err(dev, "Incorrect parameter, echo 0/1 to disable/enable Pcut feature\n");
+		goto fail;
+	}
+
+	ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+						AB8505_RTC_PCUT_CTL_STATUS_REG, (u8)reg_value);
+
+	if (ret < 0)
+		dev_err(dev, "Failed to set AB8505_RTC_PCUT_CTL_STATUS_REG\n");
+
+fail:
+	return count;
+}
+
+static ssize_t ab8505_powercut_flag_read(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+
+	int ret;
+	u8 reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+						AB8505_RTC_PCUT_CTL_STATUS_REG,  &reg_value);
+
+	if (ret < 0) {
+		dev_err(dev, "Failed to read AB8505_RTC_PCUT_CTL_STATUS_REG\n");
+		goto fail;
+	}
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", ((reg_value & 0x10) >> 4));
+
+fail:
+	return ret;
+}
+
+static ssize_t ab8505_powercut_debounce_read(struct device *dev,
+					     struct device_attribute *attr,
+					     char *buf)
+{
+	int ret;
+	u8 reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+						AB8505_RTC_PCUT_DEBOUNCE_REG,  &reg_value);
+
+	if (ret < 0) {
+		dev_err(dev, "Failed to read AB8505_RTC_PCUT_DEBOUNCE_REG\n");
+		goto fail;
+	}
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7));
+
+fail:
+	return ret;
+}
+
+static ssize_t ab8505_powercut_debounce_write(struct device *dev,
+					      struct device_attribute *attr,
+					      const char *buf, size_t count)
+{
+	int ret;
+	int reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	reg_value = simple_strtoul(buf, NULL, 10);
+	if (reg_value > 0x7) {
+		dev_err(dev, "Incorrect parameter, echo 0 to 7 for debounce setting\n");
+		goto fail;
+	}
+
+	ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+						AB8505_RTC_PCUT_DEBOUNCE_REG, (u8)reg_value);
+
+	if (ret < 0)
+		dev_err(dev, "Failed to set AB8505_RTC_PCUT_DEBOUNCE_REG\n");
+
+fail:
+	return count;
+}
+
+static ssize_t ab8505_powercut_enable_status_read(struct device *dev,
+						  struct device_attribute *attr,
+						  char *buf)
+{
+	int ret;
+	u8 reg_value;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+						AB8505_RTC_PCUT_CTL_STATUS_REG, &reg_value);
+
+	if (ret < 0) {
+		dev_err(dev, "Failed to read AB8505_RTC_PCUT_CTL_STATUS_REG\n");
+		goto fail;
+	}
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", ((reg_value & 0x20) >> 5));
+
+fail:
+	return ret;
+}
+
+static struct device_attribute ab8505_fg_sysfs_psy_attrs[] = {
+	__ATTR(powercut_flagtime, (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8505_powercut_flagtime_read, ab8505_powercut_flagtime_write),
+	__ATTR(powercut_maxtime, (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8505_powercut_maxtime_read, ab8505_powercut_maxtime_write),
+	__ATTR(powercut_restart_max, (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8505_powercut_restart_read, ab8505_powercut_restart_write),
+	__ATTR(powercut_timer, S_IRUGO, ab8505_powercut_timer_read, NULL),
+	__ATTR(powercut_restart_counter, S_IRUGO,
+		ab8505_powercut_restart_counter_read, NULL),
+	__ATTR(powercut_enable, (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8505_powercut_read, ab8505_powercut_write),
+	__ATTR(powercut_flag, S_IRUGO, ab8505_powercut_flag_read, NULL),
+	__ATTR(powercut_debounce_time, (S_IRUGO | S_IWUSR | S_IWGRP),
+		ab8505_powercut_debounce_read, ab8505_powercut_debounce_write),
+	__ATTR(powercut_enable_status, S_IRUGO,
+		ab8505_powercut_enable_status_read, NULL),
+};
+
+static int ab8500_fg_sysfs_psy_create_attrs(struct device *dev)
+{
+	unsigned int i, j;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	if (((is_ab8505(di->parent) || is_ab9540(di->parent)) &&
+	     abx500_get_chip_id(dev->parent) >= AB8500_CUT2P0)
+	    || is_ab8540(di->parent)) {
+		for (j = 0; j < ARRAY_SIZE(ab8505_fg_sysfs_psy_attrs); j++)
+			if (device_create_file(dev, &ab8505_fg_sysfs_psy_attrs[j]))
+				goto sysfs_psy_create_attrs_failed_ab8505;
+	}
+	return 0;
+sysfs_psy_create_attrs_failed_ab8505:
+	dev_err(dev, "Failed creating sysfs psy attrs for ab8505.\n");
+	while (j--)
+		device_remove_file(dev, &ab8505_fg_sysfs_psy_attrs[i]);
+
+	return -EIO;
+}
+
+static void ab8500_fg_sysfs_psy_remove_attrs(struct device *dev)
+{
+	unsigned int i;
+	struct power_supply *psy = dev_get_drvdata(dev);
+	struct ab8500_fg *di;
+
+	di = to_ab8500_fg_device_info(psy);
+
+	if (((is_ab8505(di->parent) || is_ab9540(di->parent)) &&
+	     abx500_get_chip_id(dev->parent) >= AB8500_CUT2P0)
+	    || is_ab8540(di->parent)) {
+		for (i = 0; i < ARRAY_SIZE(ab8505_fg_sysfs_psy_attrs); i++)
+			(void)device_remove_file(dev, &ab8505_fg_sysfs_psy_attrs[i]);
+	}
+}
+
 /* Exposure to the sysfs interface <<END>> */
 
 #if defined(CONFIG_PM)
@@ -2607,6 +3068,7 @@ static int ab8500_fg_remove(struct platform_device *pdev)
 	ab8500_fg_sysfs_exit(di);
 
 	flush_scheduled_work();
+	ab8500_fg_sysfs_psy_remove_attrs(di->fg_psy.dev);
 	power_supply_unregister(&di->fg_psy);
 	platform_set_drvdata(pdev, NULL);
 	return ret;
@@ -2772,6 +3234,13 @@ static int ab8500_fg_probe(struct platform_device *pdev)
 		goto free_irq;
 	}
 
+	ret = ab8500_fg_sysfs_psy_create_attrs(di->fg_psy.dev);
+	if (ret) {
+		dev_err(di->dev, "failed to create FG psy\n");
+		ab8500_fg_sysfs_exit(di);
+		goto free_irq;
+	}
+
 	/* Calibrate the fg first time */
 	di->flags.calibrate = true;
 	di->calib_state = AB8500_FG_CALIB_INIT;
diff --git a/drivers/power/abx500_chargalg.c b/drivers/power/abx500_chargalg.c
index f043c0851a76..9863e423602c 100644
--- a/drivers/power/abx500_chargalg.c
+++ b/drivers/power/abx500_chargalg.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) ST-Ericsson SA 2012
+ * Copyright (c) 2012 Sony Mobile Communications AB
  *
  * Charging algorithm driver for abx500 variants
  *
@@ -8,11 +9,13 @@
  *	Johan Palsson <johan.palsson@stericsson.com>
  *	Karl Komierowski <karl.komierowski@stericsson.com>
  *	Arun R Murthy <arun.murthy@stericsson.com>
+ *	Author: Imre Sunyi <imre.sunyi@sonymobile.com>
  */
 
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/device.h>
+#include <linux/hrtimer.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
@@ -24,8 +27,10 @@
 #include <linux/of.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/abx500.h>
+#include <linux/mfd/abx500/ab8500.h>
 #include <linux/mfd/abx500/ux500_chargalg.h>
 #include <linux/mfd/abx500/ab8500-bm.h>
+#include <linux/notifier.h>
 
 /* Watchdog kick interval */
 #define CHG_WD_INTERVAL			(6 * HZ)
@@ -33,6 +38,18 @@
 /* End-of-charge criteria counter */
 #define EOC_COND_CNT			10
 
+/* One hour expressed in seconds */
+#define ONE_HOUR_IN_SECONDS            3600
+
+/* Five minutes expressed in seconds */
+#define FIVE_MINUTES_IN_SECONDS        300
+
+/* Plus margin for the low battery threshold */
+#define BAT_PLUS_MARGIN                (100)
+
+#define CHARGALG_CURR_STEP_LOW		0
+#define CHARGALG_CURR_STEP_HIGH	100
+
 #define to_abx500_chargalg_device_info(x) container_of((x), \
 	struct abx500_chargalg, chargalg_psy);
 
@@ -66,6 +83,11 @@ struct abx500_chargalg_suspension_status {
 	bool usb_suspended;
 };
 
+struct abx500_chargalg_current_step_status {
+	bool curr_step_change;
+	int curr_step;
+};
+
 struct abx500_chargalg_battery_data {
 	int temp;
 	int volt;
@@ -82,6 +104,7 @@ enum abx500_chargalg_states {
 	STATE_HW_TEMP_PROTECT_INIT,
 	STATE_HW_TEMP_PROTECT,
 	STATE_NORMAL_INIT,
+	STATE_USB_PP_PRE_CHARGE,
 	STATE_NORMAL,
 	STATE_WAIT_FOR_RECHARGE_INIT,
 	STATE_WAIT_FOR_RECHARGE,
@@ -113,6 +136,7 @@ static const char *states[] = {
 	"HW_TEMP_PROTECT_INIT",
 	"HW_TEMP_PROTECT",
 	"NORMAL_INIT",
+	"USB_PP_PRE_CHARGE",
 	"NORMAL",
 	"WAIT_FOR_RECHARGE_INIT",
 	"WAIT_FOR_RECHARGE",
@@ -204,6 +228,8 @@ enum maxim_ret {
  * @batt_data:		data of the battery
  * @susp_status:	current charger suspension status
  * @bm:           	Platform specific battery management information
+ * @curr_status:	Current step status for over-current protection
+ * @parent:		pointer to the struct abx500
  * @chargalg_psy:	structure that holds the battery properties exposed by
  *			the charging algorithm
  * @events:		structure for information about events triggered
@@ -227,6 +253,8 @@ struct abx500_chargalg {
 	struct abx500_chargalg_charger_info chg_info;
 	struct abx500_chargalg_battery_data batt_data;
 	struct abx500_chargalg_suspension_status susp_status;
+	struct ab8500 *parent;
+	struct abx500_chargalg_current_step_status curr_status;
 	struct abx500_bm_data *bm;
 	struct power_supply chargalg_psy;
 	struct ux500_charger *ac_chg;
@@ -236,51 +264,69 @@ struct abx500_chargalg {
 	struct delayed_work chargalg_periodic_work;
 	struct delayed_work chargalg_wd_work;
 	struct work_struct chargalg_work;
-	struct timer_list safety_timer;
-	struct timer_list maintenance_timer;
+	struct hrtimer safety_timer;
+	struct hrtimer maintenance_timer;
 	struct kobject chargalg_kobject;
 };
 
+/*External charger prepare notifier*/
+BLOCKING_NOTIFIER_HEAD(charger_notifier_list);
+
 /* Main battery properties */
 static enum power_supply_property abx500_chargalg_props[] = {
 	POWER_SUPPLY_PROP_STATUS,
 	POWER_SUPPLY_PROP_HEALTH,
 };
 
+struct abx500_chargalg_sysfs_entry {
+	struct attribute attr;
+	ssize_t (*show)(struct abx500_chargalg *, char *);
+	ssize_t (*store)(struct abx500_chargalg *, const char *, size_t);
+};
+
 /**
  * abx500_chargalg_safety_timer_expired() - Expiration of the safety timer
- * @data:	pointer to the abx500_chargalg structure
+ * @timer:     pointer to the hrtimer structure
  *
  * This function gets called when the safety timer for the charger
  * expires
  */
-static void abx500_chargalg_safety_timer_expired(unsigned long data)
+static enum hrtimer_restart
+abx500_chargalg_safety_timer_expired(struct hrtimer *timer)
 {
-	struct abx500_chargalg *di = (struct abx500_chargalg *) data;
+	struct abx500_chargalg *di = container_of(timer, struct abx500_chargalg,
+						  safety_timer);
 	dev_err(di->dev, "Safety timer expired\n");
 	di->events.safety_timer_expired = true;
 
 	/* Trigger execution of the algorithm instantly */
 	queue_work(di->chargalg_wq, &di->chargalg_work);
+
+	return HRTIMER_NORESTART;
 }
 
 /**
  * abx500_chargalg_maintenance_timer_expired() - Expiration of
  * the maintenance timer
- * @i:		pointer to the abx500_chargalg structure
+ * @timer:     pointer to the timer structure
  *
  * This function gets called when the maintenence timer
  * expires
  */
-static void abx500_chargalg_maintenance_timer_expired(unsigned long data)
+static enum hrtimer_restart
+abx500_chargalg_maintenance_timer_expired(struct hrtimer *timer)
 {
 
-	struct abx500_chargalg *di = (struct abx500_chargalg *) data;
+	struct abx500_chargalg *di = container_of(timer, struct abx500_chargalg,
+						  maintenance_timer);
+
 	dev_dbg(di->dev, "Maintenance timer expired\n");
 	di->events.maintenance_timer_expired = true;
 
 	/* Trigger execution of the algorithm instantly */
 	queue_work(di->chargalg_wq, &di->chargalg_work);
+
+	return HRTIMER_NORESTART;
 }
 
 /**
@@ -303,6 +349,30 @@ static void abx500_chargalg_state_to(struct abx500_chargalg *di,
 	di->charge_state = state;
 }
 
+static int abx500_chargalg_check_charger_enable(struct abx500_chargalg *di)
+{
+	switch (di->charge_state) {
+	case STATE_NORMAL:
+	case STATE_MAINTENANCE_A:
+	case STATE_MAINTENANCE_B:
+		break;
+	default:
+		return 0;
+	}
+
+	if (di->chg_info.charger_type & USB_CHG) {
+		return di->usb_chg->ops.check_enable(di->usb_chg,
+                         di->bm->bat_type[di->bm->batt_id].normal_vol_lvl,
+                         di->bm->bat_type[di->bm->batt_id].normal_cur_lvl);
+	} else if ((di->chg_info.charger_type & AC_CHG) &&
+		   !(di->ac_chg->external)) {
+		return di->ac_chg->ops.check_enable(di->ac_chg,
+                         di->bm->bat_type[di->bm->batt_id].normal_vol_lvl,
+                         di->bm->bat_type[di->bm->batt_id].normal_cur_lvl);
+	}
+	return 0;
+}
+
 /**
  * abx500_chargalg_check_charger_connection() - Check charger connection change
  * @di:		pointer to the abx500_chargalg structure
@@ -348,6 +418,22 @@ static int abx500_chargalg_check_charger_connection(struct abx500_chargalg *di)
 }
 
 /**
+ * abx500_chargalg_check_current_step_status() - Check charging current
+ * step status.
+ * @di:		pointer to the abx500_chargalg structure
+ *
+ * This function will check if there is a change in the charging current step
+ * and change charge state accordingly.
+ */
+static void abx500_chargalg_check_current_step_status
+	(struct abx500_chargalg *di)
+{
+	if (di->curr_status.curr_step_change)
+		abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+	di->curr_status.curr_step_change = false;
+}
+
+/**
  * abx500_chargalg_start_safety_timer() - Start charging safety timer
  * @di:		pointer to the abx500_chargalg structure
  *
@@ -356,19 +442,16 @@ static int abx500_chargalg_check_charger_connection(struct abx500_chargalg *di)
  */
 static void abx500_chargalg_start_safety_timer(struct abx500_chargalg *di)
 {
-	unsigned long timer_expiration = 0;
+	/* Charger-dependent expiration time in hours*/
+	int timer_expiration = 0;
 
 	switch (di->chg_info.charger_type) {
 	case AC_CHG:
-		timer_expiration =
-		round_jiffies(jiffies +
-			(di->bm->main_safety_tmr_h * 3600 * HZ));
+		timer_expiration = di->bm->main_safety_tmr_h;
 		break;
 
 	case USB_CHG:
-		timer_expiration =
-		round_jiffies(jiffies +
-			(di->bm->usb_safety_tmr_h * 3600 * HZ));
+		timer_expiration = di->bm->usb_safety_tmr_h;
 		break;
 
 	default:
@@ -377,11 +460,10 @@ static void abx500_chargalg_start_safety_timer(struct abx500_chargalg *di)
 	}
 
 	di->events.safety_timer_expired = false;
-	di->safety_timer.expires = timer_expiration;
-	if (!timer_pending(&di->safety_timer))
-		add_timer(&di->safety_timer);
-	else
-		mod_timer(&di->safety_timer, timer_expiration);
+	hrtimer_set_expires_range(&di->safety_timer,
+		ktime_set(timer_expiration * ONE_HOUR_IN_SECONDS, 0),
+		ktime_set(FIVE_MINUTES_IN_SECONDS, 0));
+	hrtimer_start_expires(&di->safety_timer, HRTIMER_MODE_REL);
 }
 
 /**
@@ -392,8 +474,8 @@ static void abx500_chargalg_start_safety_timer(struct abx500_chargalg *di)
  */
 static void abx500_chargalg_stop_safety_timer(struct abx500_chargalg *di)
 {
-	di->events.safety_timer_expired = false;
-	del_timer(&di->safety_timer);
+	if (hrtimer_try_to_cancel(&di->safety_timer) >= 0)
+		di->events.safety_timer_expired = false;
 }
 
 /**
@@ -408,17 +490,11 @@ static void abx500_chargalg_stop_safety_timer(struct abx500_chargalg *di)
 static void abx500_chargalg_start_maintenance_timer(struct abx500_chargalg *di,
 	int duration)
 {
-	unsigned long timer_expiration;
-
-	/* Convert from hours to jiffies */
-	timer_expiration = round_jiffies(jiffies + (duration * 3600 * HZ));
-
+	hrtimer_set_expires_range(&di->maintenance_timer,
+		ktime_set(duration * ONE_HOUR_IN_SECONDS, 0),
+		ktime_set(FIVE_MINUTES_IN_SECONDS, 0));
 	di->events.maintenance_timer_expired = false;
-	di->maintenance_timer.expires = timer_expiration;
-	if (!timer_pending(&di->maintenance_timer))
-		add_timer(&di->maintenance_timer);
-	else
-		mod_timer(&di->maintenance_timer, timer_expiration);
+	hrtimer_start_expires(&di->maintenance_timer, HRTIMER_MODE_REL);
 }
 
 /**
@@ -430,8 +506,8 @@ static void abx500_chargalg_start_maintenance_timer(struct abx500_chargalg *di,
  */
 static void abx500_chargalg_stop_maintenance_timer(struct abx500_chargalg *di)
 {
-	di->events.maintenance_timer_expired = false;
-	del_timer(&di->maintenance_timer);
+	if (hrtimer_try_to_cancel(&di->maintenance_timer) >= 0)
+		di->events.maintenance_timer_expired = false;
 }
 
 /**
@@ -477,6 +553,8 @@ static int abx500_chargalg_kick_watchdog(struct abx500_chargalg *di)
 static int abx500_chargalg_ac_en(struct abx500_chargalg *di, int enable,
 	int vset, int iset)
 {
+	static int abx500_chargalg_ex_ac_enable_toggle;
+
 	if (!di->ac_chg || !di->ac_chg->ops.enable)
 		return -ENXIO;
 
@@ -489,6 +567,14 @@ static int abx500_chargalg_ac_en(struct abx500_chargalg *di, int enable,
 	di->chg_info.ac_iset = iset;
 	di->chg_info.ac_vset = vset;
 
+	/* Enable external charger */
+	if (enable && di->ac_chg->external &&
+	    !abx500_chargalg_ex_ac_enable_toggle) {
+		blocking_notifier_call_chain(&charger_notifier_list,
+					     0, di->dev);
+		abx500_chargalg_ex_ac_enable_toggle++;
+	}
+
 	return di->ac_chg->ops.enable(di->ac_chg, enable, vset, iset);
 }
 
@@ -520,6 +606,37 @@ static int abx500_chargalg_usb_en(struct abx500_chargalg *di, int enable,
 	return di->usb_chg->ops.enable(di->usb_chg, enable, vset, iset);
 }
 
+ /**
+ * ab8540_chargalg_usb_pp_en() - Enable/ disable USB power path
+ * @di:                pointer to the abx500_chargalg structure
+ * @enable:    power path enable/disable
+ *
+ * The USB power path will be enable/ disable
+ */
+static int ab8540_chargalg_usb_pp_en(struct abx500_chargalg *di, bool enable)
+{
+	if (!di->usb_chg || !di->usb_chg->ops.pp_enable)
+		return -ENXIO;
+
+	return di->usb_chg->ops.pp_enable(di->usb_chg, enable);
+}
+
+/**
+ * ab8540_chargalg_usb_pre_chg_en() - Enable/ disable USB pre-charge
+ * @di:                pointer to the abx500_chargalg structure
+ * @enable:    USB pre-charge enable/disable
+ *
+ * The USB USB pre-charge will be enable/ disable
+ */
+static int ab8540_chargalg_usb_pre_chg_en(struct abx500_chargalg *di,
+					  bool enable)
+{
+	if (!di->usb_chg || !di->usb_chg->ops.pre_chg_enable)
+		return -ENXIO;
+
+	return di->usb_chg->ops.pre_chg_enable(di->usb_chg, enable);
+}
+
 /**
  * abx500_chargalg_update_chg_curr() - Update charger current
  * @di:		pointer to the abx500_chargalg structure
@@ -613,8 +730,6 @@ static void abx500_chargalg_hold_charging(struct abx500_chargalg *di)
 static void abx500_chargalg_start_charging(struct abx500_chargalg *di,
 	int vset, int iset)
 {
-	bool start_chargalg_wd = true;
-
 	switch (di->chg_info.charger_type) {
 	case AC_CHG:
 		dev_dbg(di->dev,
@@ -632,12 +747,8 @@ static void abx500_chargalg_start_charging(struct abx500_chargalg *di,
 
 	default:
 		dev_err(di->dev, "Unknown charger to charge from\n");
-		start_chargalg_wd = false;
 		break;
 	}
-
-	if (start_chargalg_wd && !delayed_work_pending(&di->chargalg_wd_work))
-		queue_delayed_work(di->chargalg_wq, &di->chargalg_wd_work, 0);
 }
 
 /**
@@ -725,6 +836,9 @@ static void abx500_chargalg_end_of_charge(struct abx500_chargalg *di)
 		di->batt_data.avg_curr > 0) {
 		if (++di->eoc_cnt >= EOC_COND_CNT) {
 			di->eoc_cnt = 0;
+			if ((di->chg_info.charger_type & USB_CHG) &&
+			   (di->usb_chg->power_path))
+				ab8540_chargalg_usb_pp_en(di, true);
 			di->charge_status = POWER_SUPPLY_STATUS_FULL;
 			di->maintenance_chg = true;
 			dev_dbg(di->dev, "EOC reached!\n");
@@ -1217,6 +1331,8 @@ static void abx500_chargalg_external_power_changed(struct power_supply *psy)
 static void abx500_chargalg_algorithm(struct abx500_chargalg *di)
 {
 	int charger_status;
+	int ret;
+	int curr_step_lvl;
 
 	/* Collect data from all power_supply class devices */
 	class_for_each_device(power_supply_class, NULL,
@@ -1227,6 +1343,15 @@ static void abx500_chargalg_algorithm(struct abx500_chargalg *di)
 	abx500_chargalg_check_charger_voltage(di);
 
 	charger_status = abx500_chargalg_check_charger_connection(di);
+	abx500_chargalg_check_current_step_status(di);
+
+	if (is_ab8500(di->parent)) {
+		ret = abx500_chargalg_check_charger_enable(di);
+		if (ret < 0)
+			dev_err(di->dev, "Checking charger is enabled error"
+					": Returned Value %d\n", ret);
+	}
+
 	/*
 	 * First check if we have a charger connected.
 	 * Also we don't allow charging of unknown batteries if configured
@@ -1416,9 +1541,34 @@ static void abx500_chargalg_algorithm(struct abx500_chargalg *di)
 		break;
 
 	case STATE_NORMAL_INIT:
-		abx500_chargalg_start_charging(di,
-			di->bm->bat_type[di->bm->batt_id].normal_vol_lvl,
-			di->bm->bat_type[di->bm->batt_id].normal_cur_lvl);
+		if ((di->chg_info.charger_type & USB_CHG) &&
+				di->usb_chg->power_path) {
+			if (di->batt_data.volt >
+			    (di->bm->fg_params->lowbat_threshold +
+			     BAT_PLUS_MARGIN)) {
+				ab8540_chargalg_usb_pre_chg_en(di, false);
+				ab8540_chargalg_usb_pp_en(di, false);
+			} else {
+				ab8540_chargalg_usb_pp_en(di, true);
+				ab8540_chargalg_usb_pre_chg_en(di, true);
+				abx500_chargalg_state_to(di,
+					STATE_USB_PP_PRE_CHARGE);
+				break;
+			}
+		}
+
+		if (di->curr_status.curr_step == CHARGALG_CURR_STEP_LOW)
+			abx500_chargalg_stop_charging(di);
+		else {
+			curr_step_lvl = di->bm->bat_type[
+				di->bm->batt_id].normal_cur_lvl
+				* di->curr_status.curr_step
+				/ CHARGALG_CURR_STEP_HIGH;
+			abx500_chargalg_start_charging(di,
+				di->bm->bat_type[di->bm->batt_id]
+				.normal_vol_lvl, curr_step_lvl);
+		}
+
 		abx500_chargalg_state_to(di, STATE_NORMAL);
 		abx500_chargalg_start_safety_timer(di);
 		abx500_chargalg_stop_maintenance_timer(di);
@@ -1430,6 +1580,13 @@ static void abx500_chargalg_algorithm(struct abx500_chargalg *di)
 
 		break;
 
+	case STATE_USB_PP_PRE_CHARGE:
+		if (di->batt_data.volt >
+			(di->bm->fg_params->lowbat_threshold +
+			BAT_PLUS_MARGIN))
+			abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+		break;
+
 	case STATE_NORMAL:
 		handle_maxim_chg_curr(di);
 		if (di->charge_status == POWER_SUPPLY_STATUS_FULL &&
@@ -1653,99 +1810,134 @@ static int abx500_chargalg_get_property(struct power_supply *psy,
 
 /* Exposure to the sysfs interface */
 
-/**
- * abx500_chargalg_sysfs_show() - sysfs show operations
- * @kobj:      pointer to the struct kobject
- * @attr:      pointer to the struct attribute
- * @buf:       buffer that holds the parameter to send to userspace
- *
- * Returns a buffer to be displayed in user space
- */
-static ssize_t abx500_chargalg_sysfs_show(struct kobject *kobj,
-					  struct attribute *attr, char *buf)
+static ssize_t abx500_chargalg_curr_step_show(struct abx500_chargalg *di,
+					      char *buf)
 {
-	struct abx500_chargalg *di = container_of(kobj,
-               struct abx500_chargalg, chargalg_kobject);
+	return sprintf(buf, "%d\n", di->curr_status.curr_step);
+}
+
+static ssize_t abx500_chargalg_curr_step_store(struct abx500_chargalg *di,
+					       const char *buf, size_t length)
+{
+	long int param;
+	int ret;
+
+	ret = kstrtol(buf, 10, &param);
+	if (ret < 0)
+		return ret;
+
+	di->curr_status.curr_step = param;
+	if (di->curr_status.curr_step >= CHARGALG_CURR_STEP_LOW &&
+		di->curr_status.curr_step <= CHARGALG_CURR_STEP_HIGH) {
+		di->curr_status.curr_step_change = true;
+		queue_work(di->chargalg_wq, &di->chargalg_work);
+	} else
+		dev_info(di->dev, "Wrong current step\n"
+			"Enter 0. Disable AC/USB Charging\n"
+			"1--100. Set AC/USB charging current step\n"
+			"100. Enable AC/USB Charging\n");
+
+	return strlen(buf);
+}
+
 
+static ssize_t abx500_chargalg_en_show(struct abx500_chargalg *di,
+				       char *buf)
+{
 	return sprintf(buf, "%d\n",
 		       di->susp_status.ac_suspended &&
 		       di->susp_status.usb_suspended);
 }
 
-/**
- * abx500_chargalg_sysfs_charger() - sysfs store operations
- * @kobj:      pointer to the struct kobject
- * @attr:      pointer to the struct attribute
- * @buf:       buffer that holds the parameter passed from userspace
- * @length:    length of the parameter passed
- *
- * Returns length of the buffer(input taken from user space) on success
- * else error code on failure
- * The operation to be performed on passing the parameters from the user space.
- */
-static ssize_t abx500_chargalg_sysfs_charger(struct kobject *kobj,
-	struct attribute *attr, const char *buf, size_t length)
+static ssize_t abx500_chargalg_en_store(struct abx500_chargalg *di,
+	const char *buf, size_t length)
 {
-	struct abx500_chargalg *di = container_of(kobj,
-		struct abx500_chargalg, chargalg_kobject);
 	long int param;
 	int ac_usb;
 	int ret;
-	char entry = *attr->name;
 
-	switch (entry) {
-	case 'c':
-		ret = strict_strtol(buf, 10, &param);
-		if (ret < 0)
-			return ret;
-
-		ac_usb = param;
-		switch (ac_usb) {
-		case 0:
-			/* Disable charging */
-			di->susp_status.ac_suspended = true;
-			di->susp_status.usb_suspended = true;
-			di->susp_status.suspended_change = true;
-			/* Trigger a state change */
-			queue_work(di->chargalg_wq,
-				&di->chargalg_work);
-			break;
-		case 1:
-			/* Enable AC Charging */
-			di->susp_status.ac_suspended = false;
-			di->susp_status.suspended_change = true;
-			/* Trigger a state change */
-			queue_work(di->chargalg_wq,
-				&di->chargalg_work);
-			break;
-		case 2:
-			/* Enable USB charging */
-			di->susp_status.usb_suspended = false;
-			di->susp_status.suspended_change = true;
-			/* Trigger a state change */
-			queue_work(di->chargalg_wq,
-				&di->chargalg_work);
-			break;
-		default:
-			dev_info(di->dev, "Wrong input\n"
-				"Enter 0. Disable AC/USB Charging\n"
-				"1. Enable AC charging\n"
-				"2. Enable USB Charging\n");
-		};
+	ret = kstrtol(buf, 10, &param);
+	if (ret < 0)
+		return ret;
+
+	ac_usb = param;
+	switch (ac_usb) {
+	case 0:
+		/* Disable charging */
+		di->susp_status.ac_suspended = true;
+		di->susp_status.usb_suspended = true;
+		di->susp_status.suspended_change = true;
+		/* Trigger a state change */
+		queue_work(di->chargalg_wq,
+			&di->chargalg_work);
+		break;
+	case 1:
+		/* Enable AC Charging */
+		di->susp_status.ac_suspended = false;
+		di->susp_status.suspended_change = true;
+		/* Trigger a state change */
+		queue_work(di->chargalg_wq,
+			&di->chargalg_work);
+		break;
+	case 2:
+		/* Enable USB charging */
+		di->susp_status.usb_suspended = false;
+		di->susp_status.suspended_change = true;
+		/* Trigger a state change */
+		queue_work(di->chargalg_wq,
+			&di->chargalg_work);
 		break;
+	default:
+		dev_info(di->dev, "Wrong input\n"
+			"Enter 0. Disable AC/USB Charging\n"
+			"1. Enable AC charging\n"
+			"2. Enable USB Charging\n");
 	};
 	return strlen(buf);
 }
 
-static struct attribute abx500_chargalg_en_charger = \
+static struct abx500_chargalg_sysfs_entry abx500_chargalg_en_charger =
+	__ATTR(chargalg, 0644, abx500_chargalg_en_show,
+				abx500_chargalg_en_store);
+
+static struct abx500_chargalg_sysfs_entry abx500_chargalg_curr_step =
+	__ATTR(chargalg_curr_step, 0644, abx500_chargalg_curr_step_show,
+					abx500_chargalg_curr_step_store);
+
+static ssize_t abx500_chargalg_sysfs_show(struct kobject *kobj,
+	struct attribute *attr, char *buf)
 {
-	.name = "chargalg",
-	.mode = S_IRUGO | S_IWUSR,
-};
+	struct abx500_chargalg_sysfs_entry *entry = container_of(attr,
+		struct abx500_chargalg_sysfs_entry, attr);
+
+	struct abx500_chargalg *di = container_of(kobj,
+		struct abx500_chargalg, chargalg_kobject);
+
+	if (!entry->show)
+		return -EIO;
+
+	return entry->show(di, buf);
+}
+
+static ssize_t abx500_chargalg_sysfs_charger(struct kobject *kobj,
+	struct attribute *attr, const char *buf, size_t length)
+{
+	struct abx500_chargalg_sysfs_entry *entry = container_of(attr,
+		struct abx500_chargalg_sysfs_entry, attr);
+
+	struct abx500_chargalg *di = container_of(kobj,
+		struct abx500_chargalg, chargalg_kobject);
+
+	if (!entry->store)
+		return -EIO;
+
+	return entry->store(di, buf, length);
+}
 
 static struct attribute *abx500_chargalg_chg[] = {
-	&abx500_chargalg_en_charger,
-	NULL
+	&abx500_chargalg_en_charger.attr,
+	&abx500_chargalg_curr_step.attr,
+	NULL,
 };
 
 static const struct sysfs_ops abx500_chargalg_sysfs_ops = {
@@ -1832,10 +2024,16 @@ static int abx500_chargalg_remove(struct platform_device *pdev)
 	/* sysfs interface to enable/disbale charging from user space */
 	abx500_chargalg_sysfs_exit(di);
 
+	hrtimer_cancel(&di->safety_timer);
+	hrtimer_cancel(&di->maintenance_timer);
+
+	cancel_delayed_work_sync(&di->chargalg_periodic_work);
+	cancel_delayed_work_sync(&di->chargalg_wd_work);
+	cancel_work_sync(&di->chargalg_work);
+
 	/* Delete the work queue */
 	destroy_workqueue(di->chargalg_wq);
 
-	flush_scheduled_work();
 	power_supply_unregister(&di->chargalg_psy);
 	platform_set_drvdata(pdev, NULL);
 
@@ -1873,8 +2071,9 @@ static int abx500_chargalg_probe(struct platform_device *pdev)
 		}
 	}
 
-	/* get device struct */
+	/* get device struct and parent */
 	di->dev = &pdev->dev;
+	di->parent = dev_get_drvdata(pdev->dev.parent);
 
 	/* chargalg supply */
 	di->chargalg_psy.name = "abx500_chargalg";
@@ -1888,15 +2087,13 @@ static int abx500_chargalg_probe(struct platform_device *pdev)
 		abx500_chargalg_external_power_changed;
 
 	/* Initilialize safety timer */
-	init_timer(&di->safety_timer);
+	hrtimer_init(&di->safety_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
 	di->safety_timer.function = abx500_chargalg_safety_timer_expired;
-	di->safety_timer.data = (unsigned long) di;
 
 	/* Initilialize maintenance timer */
-	init_timer(&di->maintenance_timer);
+	hrtimer_init(&di->maintenance_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
 	di->maintenance_timer.function =
 		abx500_chargalg_maintenance_timer_expired;
-	di->maintenance_timer.data = (unsigned long) di;
 
 	/* Create a work queue for the chargalg */
 	di->chargalg_wq =
@@ -1933,6 +2130,7 @@ static int abx500_chargalg_probe(struct platform_device *pdev)
 		dev_err(di->dev, "failed to create sysfs entry\n");
 		goto free_psy;
 	}
+	di->curr_status.curr_step = CHARGALG_CURR_STEP_HIGH;
 
 	/* Run the charging algorithm */
 	queue_delayed_work(di->chargalg_wq, &di->chargalg_periodic_work, 0);
@@ -1964,18 +2162,7 @@ static struct platform_driver abx500_chargalg_driver = {
 	},
 };
 
-static int __init abx500_chargalg_init(void)
-{
-	return platform_driver_register(&abx500_chargalg_driver);
-}
-
-static void __exit abx500_chargalg_exit(void)
-{
-	platform_driver_unregister(&abx500_chargalg_driver);
-}
-
-module_init(abx500_chargalg_init);
-module_exit(abx500_chargalg_exit);
+module_platform_driver(abx500_chargalg_driver);
 
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Johan Palsson, Karl Komierowski");
diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c
index 8acc3f8d303c..fefc39fe42be 100644
--- a/drivers/power/charger-manager.c
+++ b/drivers/power/charger-manager.c
@@ -1485,13 +1485,12 @@ static int charger_manager_probe(struct platform_device *pdev)
 
 	/* Basic Values. Unspecified are Null or 0 */
 	cm->dev = &pdev->dev;
-	cm->desc = kzalloc(sizeof(struct charger_desc), GFP_KERNEL);
+	cm->desc = kmemdup(desc, sizeof(struct charger_desc), GFP_KERNEL);
 	if (!cm->desc) {
 		dev_err(&pdev->dev, "Cannot allocate memory.\n");
 		ret = -ENOMEM;
 		goto err_alloc_desc;
 	}
-	memcpy(cm->desc, desc, sizeof(struct charger_desc));
 	cm->last_temp_mC = INT_MIN; /* denotes "unmeasured, yet" */
 
 	/*
diff --git a/drivers/power/da9030_battery.c b/drivers/power/da9030_battery.c
index e8c5a391a498..ae6c41835ee6 100644
--- a/drivers/power/da9030_battery.c
+++ b/drivers/power/da9030_battery.c
@@ -505,7 +505,7 @@ static int da9030_battery_probe(struct platform_device *pdev)
 	    pdata->charge_millivolt > 4350)
 		return -EINVAL;
 
-	charger = kzalloc(sizeof(*charger), GFP_KERNEL);
+	charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL);
 	if (charger == NULL)
 		return -ENOMEM;
 
@@ -557,8 +557,6 @@ err_notifier:
 	cancel_delayed_work(&charger->work);
 
 err_charger_init:
-	kfree(charger);
-
 	return ret;
 }
 
@@ -575,8 +573,6 @@ static int da9030_battery_remove(struct platform_device *dev)
 	da9030_set_charge(charger, 0);
 	power_supply_unregister(&charger->psy);
 
-	kfree(charger);
-
 	return 0;
 }
 
diff --git a/drivers/power/da9052-battery.c b/drivers/power/da9052-battery.c
index 08193feb3b08..f8f4c0f7c17d 100644
--- a/drivers/power/da9052-battery.c
+++ b/drivers/power/da9052-battery.c
@@ -594,7 +594,8 @@ static s32 da9052_bat_probe(struct platform_device *pdev)
 	int ret;
 	int i;
 
-	bat = kzalloc(sizeof(struct da9052_battery), GFP_KERNEL);
+	bat = devm_kzalloc(&pdev->dev, sizeof(struct da9052_battery),
+				GFP_KERNEL);
 	if (!bat)
 		return -ENOMEM;
 
@@ -635,7 +636,6 @@ err:
 	while (--i >= 0)
 		da9052_free_irq(bat->da9052, da9052_bat_irq_bits[i], bat);
 
-	kfree(bat);
 	return ret;
 }
 static int da9052_bat_remove(struct platform_device *pdev)
@@ -647,7 +647,6 @@ static int da9052_bat_remove(struct platform_device *pdev)
 		da9052_free_irq(bat->da9052, da9052_bat_irq_bits[i], bat);
 
 	power_supply_unregister(&bat->psy);
-	kfree(bat);
 
 	return 0;
 }
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index 704e652072be..85b4e6eca0b1 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -512,7 +512,7 @@ static int ds2760_battery_probe(struct platform_device *pdev)
 	int retval = 0;
 	struct ds2760_device_info *di;
 
-	di = kzalloc(sizeof(*di), GFP_KERNEL);
+	di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
 	if (!di) {
 		retval = -ENOMEM;
 		goto di_alloc_failed;
@@ -576,7 +576,6 @@ static int ds2760_battery_probe(struct platform_device *pdev)
 workqueue_failed:
 	power_supply_unregister(&di->bat);
 batt_failed:
-	kfree(di);
 di_alloc_failed:
 success:
 	return retval;
@@ -590,7 +589,6 @@ static int ds2760_battery_remove(struct platform_device *pdev)
 	cancel_delayed_work_sync(&di->set_charged_work);
 	destroy_workqueue(di->monitor_wqueue);
 	power_supply_unregister(&di->bat);
-	kfree(di);
 
 	return 0;
 }
diff --git a/drivers/power/ds2780_battery.c b/drivers/power/ds2780_battery.c
index 8b6c4539e7f4..9f418fa879e5 100644
--- a/drivers/power/ds2780_battery.c
+++ b/drivers/power/ds2780_battery.c
@@ -760,7 +760,7 @@ static int ds2780_battery_probe(struct platform_device *pdev)
 	int ret = 0;
 	struct ds2780_device_info *dev_info;
 
-	dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL);
+	dev_info = devm_kzalloc(&pdev->dev, sizeof(*dev_info), GFP_KERNEL);
 	if (!dev_info) {
 		ret = -ENOMEM;
 		goto fail;
@@ -779,7 +779,7 @@ static int ds2780_battery_probe(struct platform_device *pdev)
 	ret = power_supply_register(&pdev->dev, &dev_info->bat);
 	if (ret) {
 		dev_err(dev_info->dev, "failed to register battery\n");
-		goto fail_free_info;
+		goto fail;
 	}
 
 	ret = sysfs_create_group(&dev_info->bat.dev->kobj, &ds2780_attr_group);
@@ -813,8 +813,6 @@ fail_remove_group:
 	sysfs_remove_group(&dev_info->bat.dev->kobj, &ds2780_attr_group);
 fail_unregister:
 	power_supply_unregister(&dev_info->bat);
-fail_free_info:
-	kfree(dev_info);
 fail:
 	return ret;
 }
@@ -828,7 +826,6 @@ static int ds2780_battery_remove(struct platform_device *pdev)
 
 	power_supply_unregister(&dev_info->bat);
 
-	kfree(dev_info);
 	return 0;
 }
 
diff --git a/drivers/power/ds2782_battery.c b/drivers/power/ds2782_battery.c
index c09e7726c96c..563174891c90 100644
--- a/drivers/power/ds2782_battery.c
+++ b/drivers/power/ds2782_battery.c
@@ -332,32 +332,32 @@ static int ds278x_battery_remove(struct i2c_client *client)
 	return 0;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 
-static int ds278x_suspend(struct i2c_client *client,
-		pm_message_t state)
+static int ds278x_suspend(struct device *dev)
 {
+	struct i2c_client *client = to_i2c_client(dev);
 	struct ds278x_info *info = i2c_get_clientdata(client);
 
 	cancel_delayed_work(&info->bat_work);
 	return 0;
 }
 
-static int ds278x_resume(struct i2c_client *client)
+static int ds278x_resume(struct device *dev)
 {
+	struct i2c_client *client = to_i2c_client(dev);
 	struct ds278x_info *info = i2c_get_clientdata(client);
 
 	schedule_delayed_work(&info->bat_work, DS278x_DELAY);
 	return 0;
 }
 
-#else
-
-#define ds278x_suspend NULL
-#define ds278x_resume NULL
-
-#endif /* CONFIG_PM */
+static SIMPLE_DEV_PM_OPS(ds278x_battery_pm_ops, ds278x_suspend, ds278x_resume);
+#define DS278X_BATTERY_PM_OPS (&ds278x_battery_pm_ops)
 
+#else
+#define DS278X_BATTERY_PM_OPS NULL
+#endif /* CONFIG_PM_SLEEP */
 
 enum ds278x_num_id {
 	DS2782 = 0,
@@ -460,11 +460,10 @@ MODULE_DEVICE_TABLE(i2c, ds278x_id);
 static struct i2c_driver ds278x_battery_driver = {
 	.driver 	= {
 		.name	= "ds2782-battery",
+		.pm	= DS278X_BATTERY_PM_OPS,
 	},
 	.probe		= ds278x_battery_probe,
 	.remove		= ds278x_battery_remove,
-	.suspend	= ds278x_suspend,
-	.resume		= ds278x_resume,
 	.id_table	= ds278x_id,
 };
 module_i2c_driver(ds278x_battery_driver);
diff --git a/drivers/power/goldfish_battery.c b/drivers/power/goldfish_battery.c
index c10f460f986f..29eba88a2963 100644
--- a/drivers/power/goldfish_battery.c
+++ b/drivers/power/goldfish_battery.c
@@ -178,7 +178,7 @@ static int goldfish_battery_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	data->reg_base = devm_ioremap(&pdev->dev, r->start, r->end - r->start + 1);
+	data->reg_base = devm_ioremap(&pdev->dev, r->start, resource_size(r));
 	if (data->reg_base == NULL) {
 		dev_err(&pdev->dev, "unable to remap MMIO\n");
 		return -ENOMEM;
diff --git a/drivers/power/gpio-charger.c b/drivers/power/gpio-charger.c
index e3e40a9f3af2..e9883eeeee76 100644
--- a/drivers/power/gpio-charger.c
+++ b/drivers/power/gpio-charger.c
@@ -86,7 +86,8 @@ static int gpio_charger_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	gpio_charger = kzalloc(sizeof(*gpio_charger), GFP_KERNEL);
+	gpio_charger = devm_kzalloc(&pdev->dev, sizeof(*gpio_charger),
+					GFP_KERNEL);
 	if (!gpio_charger) {
 		dev_err(&pdev->dev, "Failed to alloc driver structure\n");
 		return -ENOMEM;
@@ -140,7 +141,6 @@ static int gpio_charger_probe(struct platform_device *pdev)
 err_gpio_free:
 	gpio_free(pdata->gpio);
 err_free:
-	kfree(gpio_charger);
 	return ret;
 }
 
@@ -156,7 +156,6 @@ static int gpio_charger_remove(struct platform_device *pdev)
 	gpio_free(gpio_charger->pdata->gpio);
 
 	platform_set_drvdata(pdev, NULL);
-	kfree(gpio_charger);
 
 	return 0;
 }
diff --git a/drivers/power/isp1704_charger.c b/drivers/power/isp1704_charger.c
index 176ad59d99f5..fc04d191579b 100644
--- a/drivers/power/isp1704_charger.c
+++ b/drivers/power/isp1704_charger.c
@@ -411,7 +411,7 @@ static int isp1704_charger_probe(struct platform_device *pdev)
 	struct isp1704_charger	*isp;
 	int			ret = -ENODEV;
 
-	isp = kzalloc(sizeof *isp, GFP_KERNEL);
+	isp = devm_kzalloc(&pdev->dev, sizeof(*isp), GFP_KERNEL);
 	if (!isp)
 		return -ENOMEM;
 
@@ -477,8 +477,6 @@ fail1:
 	isp1704_charger_set_power(isp, 0);
 	usb_put_phy(isp->phy);
 fail0:
-	kfree(isp);
-
 	dev_err(&pdev->dev, "failed to register isp1704 with error %d\n", ret);
 
 	return ret;
@@ -492,7 +490,6 @@ static int isp1704_charger_remove(struct platform_device *pdev)
 	power_supply_unregister(&isp->psy);
 	usb_put_phy(isp->phy);
 	isp1704_charger_set_power(isp, 0);
-	kfree(isp);
 
 	return 0;
 }
diff --git a/drivers/power/lp8788-charger.c b/drivers/power/lp8788-charger.c
index 6d1f452810b8..ed49b50b220b 100644
--- a/drivers/power/lp8788-charger.c
+++ b/drivers/power/lp8788-charger.c
@@ -49,7 +49,6 @@
 #define LP8788_CHG_START		0x11
 #define LP8788_CHG_END			0x1C
 
-#define LP8788_BUF_SIZE			40
 #define LP8788_ISEL_MAX			23
 #define LP8788_ISEL_STEP		50
 #define LP8788_VTERM_MIN		4100
@@ -633,7 +632,7 @@ static ssize_t lp8788_show_charger_status(struct device *dev,
 	lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
 	state = (data & LP8788_CHG_STATE_M) >> LP8788_CHG_STATE_S;
 
-	return scnprintf(buf, LP8788_BUF_SIZE, "%s\n", desc[state]);
+	return scnprintf(buf, PAGE_SIZE, "%s\n", desc[state]);
 }
 
 static ssize_t lp8788_show_eoc_time(struct device *dev,
@@ -647,7 +646,7 @@ static ssize_t lp8788_show_eoc_time(struct device *dev,
 	lp8788_read_byte(pchg->lp, LP8788_CHG_EOC, &val);
 	val = (val & LP8788_CHG_EOC_TIME_M) >> LP8788_CHG_EOC_TIME_S;
 
-	return scnprintf(buf, LP8788_BUF_SIZE, "End Of Charge Time: %s\n",
+	return scnprintf(buf, PAGE_SIZE, "End Of Charge Time: %s\n",
 			stime[val]);
 }
 
@@ -667,8 +666,7 @@ static ssize_t lp8788_show_eoc_level(struct device *dev,
 	val = (val & LP8788_CHG_EOC_LEVEL_M) >> LP8788_CHG_EOC_LEVEL_S;
 	level = mode ? abs_level[val] : relative_level[val];
 
-	return scnprintf(buf, LP8788_BUF_SIZE, "End Of Charge Level: %s\n",
-			level);
+	return scnprintf(buf, PAGE_SIZE, "End Of Charge Level: %s\n", level);
 }
 
 static DEVICE_ATTR(charger_status, S_IRUSR, lp8788_show_charger_status, NULL);
diff --git a/drivers/power/max17040_battery.c b/drivers/power/max17040_battery.c
index 74a0bd9bc162..c7ff6d67f158 100644
--- a/drivers/power/max17040_battery.c
+++ b/drivers/power/max17040_battery.c
@@ -246,31 +246,34 @@ static int max17040_remove(struct i2c_client *client)
 	return 0;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 
-static int max17040_suspend(struct i2c_client *client,
-		pm_message_t state)
+static int max17040_suspend(struct device *dev)
 {
+	struct i2c_client *client = to_i2c_client(dev);
 	struct max17040_chip *chip = i2c_get_clientdata(client);
 
 	cancel_delayed_work(&chip->work);
 	return 0;
 }
 
-static int max17040_resume(struct i2c_client *client)
+static int max17040_resume(struct device *dev)
 {
+	struct i2c_client *client = to_i2c_client(dev);
 	struct max17040_chip *chip = i2c_get_clientdata(client);
 
 	schedule_delayed_work(&chip->work, MAX17040_DELAY);
 	return 0;
 }
 
+static SIMPLE_DEV_PM_OPS(max17040_pm_ops, max17040_suspend, max17040_resume);
+#define MAX17040_PM_OPS (&max17040_pm_ops)
+
 #else
 
-#define max17040_suspend NULL
-#define max17040_resume NULL
+#define MAX17040_PM_OPS NULL
 
-#endif /* CONFIG_PM */
+#endif /* CONFIG_PM_SLEEP */
 
 static const struct i2c_device_id max17040_id[] = {
 	{ "max17040", 0 },
@@ -281,11 +284,10 @@ MODULE_DEVICE_TABLE(i2c, max17040_id);
 static struct i2c_driver max17040_i2c_driver = {
 	.driver	= {
 		.name	= "max17040",
+		.pm	= MAX17040_PM_OPS,
 	},
 	.probe		= max17040_probe,
 	.remove		= max17040_remove,
-	.suspend	= max17040_suspend,
-	.resume		= max17040_resume,
 	.id_table	= max17040_id,
 };
 module_i2c_driver(max17040_i2c_driver);
diff --git a/drivers/power/max8903_charger.c b/drivers/power/max8903_charger.c
index 14e2b96d93b0..08f0d7909b6b 100644
--- a/drivers/power/max8903_charger.c
+++ b/drivers/power/max8903_charger.c
@@ -189,7 +189,7 @@ static int max8903_probe(struct platform_device *pdev)
 	int ta_in = 0;
 	int usb_in = 0;
 
-	data = kzalloc(sizeof(struct max8903_data), GFP_KERNEL);
+	data = devm_kzalloc(dev, sizeof(struct max8903_data), GFP_KERNEL);
 	if (data == NULL) {
 		dev_err(dev, "Cannot allocate memory.\n");
 		return -ENOMEM;
@@ -341,7 +341,6 @@ err_dc_irq:
 err_psy:
 	power_supply_unregister(&data->psy);
 err:
-	kfree(data);
 	return ret;
 }
 
@@ -359,7 +358,6 @@ static int max8903_remove(struct platform_device *pdev)
 		if (pdata->dc_valid)
 			free_irq(gpio_to_irq(pdata->dok), data);
 		power_supply_unregister(&data->psy);
-		kfree(data);
 	}
 
 	return 0;
diff --git a/drivers/power/max8925_power.c b/drivers/power/max8925_power.c
index 665cdc76c265..0ee1e14f76e9 100644
--- a/drivers/power/max8925_power.c
+++ b/drivers/power/max8925_power.c
@@ -489,7 +489,8 @@ static int max8925_power_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	info = kzalloc(sizeof(struct max8925_power_info), GFP_KERNEL);
+	info = devm_kzalloc(&pdev->dev, sizeof(struct max8925_power_info),
+				GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
 	info->chip = chip;
@@ -546,7 +547,6 @@ out_battery:
 out_usb:
 	power_supply_unregister(&info->ac);
 out:
-	kfree(info);
 	return ret;
 }
 
@@ -559,7 +559,6 @@ static int max8925_power_remove(struct platform_device *pdev)
 		power_supply_unregister(&info->usb);
 		power_supply_unregister(&info->battery);
 		max8925_deinit_charger(info);
-		kfree(info);
 	}
 	return 0;
 }
diff --git a/drivers/power/max8997_charger.c b/drivers/power/max8997_charger.c
index e757885b620c..4bdedfed936d 100644
--- a/drivers/power/max8997_charger.c
+++ b/drivers/power/max8997_charger.c
@@ -138,7 +138,8 @@ static int max8997_battery_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	charger = kzalloc(sizeof(struct charger_data), GFP_KERNEL);
+	charger = devm_kzalloc(&pdev->dev, sizeof(struct charger_data),
+				GFP_KERNEL);
 	if (charger == NULL) {
 		dev_err(&pdev->dev, "Cannot allocate memory.\n");
 		return -ENOMEM;
@@ -158,13 +159,10 @@ static int max8997_battery_probe(struct platform_device *pdev)
 	ret = power_supply_register(&pdev->dev, &charger->battery);
 	if (ret) {
 		dev_err(&pdev->dev, "failed: power supply register\n");
-		goto err;
+		return ret;
 	}
 
 	return 0;
-err:
-	kfree(charger);
-	return ret;
 }
 
 static int max8997_battery_remove(struct platform_device *pdev)
@@ -172,7 +170,6 @@ static int max8997_battery_remove(struct platform_device *pdev)
 	struct charger_data *charger = platform_get_drvdata(pdev);
 
 	power_supply_unregister(&charger->battery);
-	kfree(charger);
 	return 0;
 }
 
diff --git a/drivers/power/max8998_charger.c b/drivers/power/max8998_charger.c
index bf677e3daec9..5017470c2fc9 100644
--- a/drivers/power/max8998_charger.c
+++ b/drivers/power/max8998_charger.c
@@ -88,7 +88,8 @@ static int max8998_battery_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	max8998 = kzalloc(sizeof(struct max8998_battery_data), GFP_KERNEL);
+	max8998 = devm_kzalloc(&pdev->dev, sizeof(struct max8998_battery_data),
+				GFP_KERNEL);
 	if (!max8998)
 		return -ENOMEM;
 
@@ -174,7 +175,6 @@ static int max8998_battery_probe(struct platform_device *pdev)
 
 	return 0;
 err:
-	kfree(max8998);
 	return ret;
 }
 
@@ -183,7 +183,6 @@ static int max8998_battery_remove(struct platform_device *pdev)
 	struct max8998_battery_data *max8998 = platform_get_drvdata(pdev);
 
 	power_supply_unregister(&max8998->battery);
-	kfree(max8998);
 
 	return 0;
 }
diff --git a/drivers/power/pcf50633-charger.c b/drivers/power/pcf50633-charger.c
index c2122a7ad065..17fd77f24b2a 100644
--- a/drivers/power/pcf50633-charger.c
+++ b/drivers/power/pcf50633-charger.c
@@ -373,7 +373,7 @@ static int pcf50633_mbc_probe(struct platform_device *pdev)
 	int i;
 	u8 mbcs1;
 
-	mbc = kzalloc(sizeof(*mbc), GFP_KERNEL);
+	mbc = devm_kzalloc(&pdev->dev, sizeof(*mbc), GFP_KERNEL);
 	if (!mbc)
 		return -ENOMEM;
 
@@ -413,7 +413,6 @@ static int pcf50633_mbc_probe(struct platform_device *pdev)
 	ret = power_supply_register(&pdev->dev, &mbc->adapter);
 	if (ret) {
 		dev_err(mbc->pcf->dev, "failed to register adapter\n");
-		kfree(mbc);
 		return ret;
 	}
 
@@ -421,7 +420,6 @@ static int pcf50633_mbc_probe(struct platform_device *pdev)
 	if (ret) {
 		dev_err(mbc->pcf->dev, "failed to register usb\n");
 		power_supply_unregister(&mbc->adapter);
-		kfree(mbc);
 		return ret;
 	}
 
@@ -430,7 +428,6 @@ static int pcf50633_mbc_probe(struct platform_device *pdev)
 		dev_err(mbc->pcf->dev, "failed to register ac\n");
 		power_supply_unregister(&mbc->adapter);
 		power_supply_unregister(&mbc->usb);
-		kfree(mbc);
 		return ret;
 	}
 
@@ -461,8 +458,6 @@ static int pcf50633_mbc_remove(struct platform_device *pdev)
 	power_supply_unregister(&mbc->adapter);
 	power_supply_unregister(&mbc->ac);
 
-	kfree(mbc);
-
 	return 0;
 }
 
diff --git a/drivers/power/pm2301_charger.c b/drivers/power/pm2301_charger.c
index ee346d443571..a44175139bbf 100644
--- a/drivers/power/pm2301_charger.c
+++ b/drivers/power/pm2301_charger.c
@@ -16,24 +16,25 @@
 #include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/power_supply.h>
-#include <linux/completion.h>
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/workqueue.h>
-#include <linux/kobject.h>
-#include <linux/mfd/abx500.h>
 #include <linux/mfd/abx500/ab8500.h>
 #include <linux/mfd/abx500/ab8500-bm.h>
-#include <linux/mfd/abx500/ab8500-gpadc.h>
 #include <linux/mfd/abx500/ux500_chargalg.h>
 #include <linux/pm2301_charger.h>
 #include <linux/gpio.h>
+#include <linux/pm_runtime.h>
+#include <linux/pm.h>
 
 #include "pm2301_charger.h"
 
 #define to_pm2xxx_charger_ac_device_info(x) container_of((x), \
 		struct pm2xxx_charger, ac_chg)
+#define SLEEP_MIN		50
+#define SLEEP_MAX		100
+#define PM2XXX_AUTOSUSPEND_DELAY 500
 
 static int pm2xxx_interrupt_registers[] = {
 	PM2XXX_REG_INT1,
@@ -113,33 +114,24 @@ static const struct i2c_device_id pm2xxx_ident[] = {
 
 static void set_lpn_pin(struct pm2xxx_charger *pm2)
 {
-	if (pm2->ac.charger_connected)
-		return;
-	gpio_set_value(pm2->lpn_pin, 1);
-
-	return;
+	if (!pm2->ac.charger_connected && gpio_is_valid(pm2->lpn_pin)) {
+		gpio_set_value(pm2->lpn_pin, 1);
+		usleep_range(SLEEP_MIN, SLEEP_MAX);
+	}
 }
 
 static void clear_lpn_pin(struct pm2xxx_charger *pm2)
 {
-	if (pm2->ac.charger_connected)
-		return;
-	gpio_set_value(pm2->lpn_pin, 0);
-
-	return;
+	if (!pm2->ac.charger_connected && gpio_is_valid(pm2->lpn_pin))
+		gpio_set_value(pm2->lpn_pin, 0);
 }
 
 static int pm2xxx_reg_read(struct pm2xxx_charger *pm2, int reg, u8 *val)
 {
 	int ret;
-	/*
-	 * When AC adaptor is unplugged, the host
-	 * must put LPN high to be able to
-	 * communicate by I2C with PM2301
-	 * and receive I2C "acknowledge" from PM2301.
-	 */
-	mutex_lock(&pm2->lock);
-	set_lpn_pin(pm2);
+
+	/* wake up the device */
+	pm_runtime_get_sync(pm2->dev);
 
 	ret = i2c_smbus_read_i2c_block_data(pm2->config.pm2xxx_i2c, reg,
 				1, val);
@@ -147,8 +139,8 @@ static int pm2xxx_reg_read(struct pm2xxx_charger *pm2, int reg, u8 *val)
 		dev_err(pm2->dev, "Error reading register at 0x%x\n", reg);
 	else
 		ret = 0;
-	clear_lpn_pin(pm2);
-	mutex_unlock(&pm2->lock);
+
+	pm_runtime_put_sync(pm2->dev);
 
 	return ret;
 }
@@ -156,14 +148,9 @@ static int pm2xxx_reg_read(struct pm2xxx_charger *pm2, int reg, u8 *val)
 static int pm2xxx_reg_write(struct pm2xxx_charger *pm2, int reg, u8 val)
 {
 	int ret;
-	/*
-	 * When AC adaptor is unplugged, the host
-	 * must put LPN high to be able to
-	 * communicate by I2C with PM2301
-	 * and receive I2C "acknowledge" from PM2301.
-	 */
-	mutex_lock(&pm2->lock);
-	set_lpn_pin(pm2);
+
+	/* wake up the device */
+	pm_runtime_get_sync(pm2->dev);
 
 	ret = i2c_smbus_write_i2c_block_data(pm2->config.pm2xxx_i2c, reg,
 				1, &val);
@@ -171,8 +158,8 @@ static int pm2xxx_reg_write(struct pm2xxx_charger *pm2, int reg, u8 val)
 		dev_err(pm2->dev, "Error writing register at 0x%x\n", reg);
 	else
 		ret = 0;
-	clear_lpn_pin(pm2);
-	mutex_unlock(&pm2->lock);
+
+	pm_runtime_put_sync(pm2->dev);
 
 	return ret;
 }
@@ -192,11 +179,22 @@ static int pm2xxx_charging_disable_mngt(struct pm2xxx_charger *pm2)
 {
 	int ret;
 
+	/* Disable SW EOC ctrl */
+	ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG, PM2XXX_SWCTRL_HW);
+	if (ret < 0) {
+		dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__);
+		return ret;
+	}
+
 	/* Disable charging */
 	ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2,
 			(PM2XXX_CH_AUTO_RESUME_DIS | PM2XXX_CHARGER_DIS));
+	if (ret < 0) {
+		dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__);
+		return ret;
+	}
 
-	return ret;
+	return 0;
 }
 
 static int pm2xxx_charger_batt_therm_mngt(struct pm2xxx_charger *pm2, int val)
@@ -216,21 +214,14 @@ int pm2xxx_charger_die_therm_mngt(struct pm2xxx_charger *pm2, int val)
 
 static int pm2xxx_charger_ovv_mngt(struct pm2xxx_charger *pm2, int val)
 {
-	int ret = 0;
+	dev_err(pm2->dev, "Overvoltage detected\n");
+	pm2->flags.ovv = true;
+	power_supply_changed(&pm2->ac_chg.psy);
 
-	pm2->failure_input_ovv++;
-	if (pm2->failure_input_ovv < 4) {
-		ret = pm2xxx_charging_enable_mngt(pm2);
-		goto out;
-	} else {
-		pm2->failure_input_ovv = 0;
-		dev_err(pm2->dev, "Overvoltage detected\n");
-		pm2->flags.ovv = true;
-		power_supply_changed(&pm2->ac_chg.psy);
-	}
+	/* Schedule a new HW failure check */
+	queue_delayed_work(pm2->charger_wq, &pm2->check_hw_failure_work, 0);
 
-out:
-	return ret;
+	return 0;
 }
 
 static int pm2xxx_charger_wd_exp_mngt(struct pm2xxx_charger *pm2, int val)
@@ -245,13 +236,29 @@ static int pm2xxx_charger_wd_exp_mngt(struct pm2xxx_charger *pm2, int val)
 
 static int pm2xxx_charger_vbat_lsig_mngt(struct pm2xxx_charger *pm2, int val)
 {
+	int ret;
+
 	switch (val) {
 	case PM2XXX_INT1_ITVBATLOWR:
 		dev_dbg(pm2->dev, "VBAT grows above VBAT_LOW level\n");
+		/* Enable SW EOC ctrl */
+		ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG,
+							PM2XXX_SWCTRL_SW);
+		if (ret < 0) {
+			dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__);
+			return ret;
+		}
 		break;
 
 	case PM2XXX_INT1_ITVBATLOWF:
 		dev_dbg(pm2->dev, "VBAT drops below VBAT_LOW level\n");
+		/* Disable SW EOC ctrl */
+		ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG,
+							PM2XXX_SWCTRL_HW);
+		if (ret < 0) {
+			dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__);
+			return ret;
+		}
 		break;
 
 	default:
@@ -322,16 +329,27 @@ static int pm2_int_reg0(void *pm2_data, int val)
 	struct pm2xxx_charger *pm2 = pm2_data;
 	int ret = 0;
 
-	if (val & (PM2XXX_INT1_ITVBATLOWR | PM2XXX_INT1_ITVBATLOWF)) {
-		ret = pm2xxx_charger_vbat_lsig_mngt(pm2, val &
-			(PM2XXX_INT1_ITVBATLOWR | PM2XXX_INT1_ITVBATLOWF));
+	if (val & PM2XXX_INT1_ITVBATLOWR) {
+		ret = pm2xxx_charger_vbat_lsig_mngt(pm2,
+						PM2XXX_INT1_ITVBATLOWR);
+		if (ret < 0)
+			goto out;
+	}
+
+	if (val & PM2XXX_INT1_ITVBATLOWF) {
+		ret = pm2xxx_charger_vbat_lsig_mngt(pm2,
+						PM2XXX_INT1_ITVBATLOWF);
+		if (ret < 0)
+			goto out;
 	}
 
 	if (val & PM2XXX_INT1_ITVBATDISCONNECT) {
 		ret = pm2xxx_charger_bat_disc_mngt(pm2,
 				PM2XXX_INT1_ITVBATDISCONNECT);
+		if (ret < 0)
+			goto out;
 	}
-
+out:
 	return ret;
 }
 
@@ -447,7 +465,6 @@ static int pm2_int_reg5(void *pm2_data, int val)
 	struct pm2xxx_charger *pm2 = pm2_data;
 	int ret = 0;
 
-
 	if (val & (PM2XXX_INT6_ITVPWR2DROP | PM2XXX_INT6_ITVPWR1DROP)) {
 		dev_dbg(pm2->dev, "VMPWR drop to VBAT level\n");
 	}
@@ -468,14 +485,22 @@ static irqreturn_t  pm2xxx_irq_int(int irq, void *data)
 	struct pm2xxx_interrupts *interrupt = pm2->pm2_int;
 	int i;
 
-	for (i = 0; i < PM2XXX_NUM_INT_REG; i++) {
-		 pm2xxx_reg_read(pm2,
+	/* wake up the device */
+	pm_runtime_get_sync(pm2->dev);
+
+	do {
+		for (i = 0; i < PM2XXX_NUM_INT_REG; i++) {
+			pm2xxx_reg_read(pm2,
 				pm2xxx_interrupt_registers[i],
 				&(interrupt->reg[i]));
 
-		if (interrupt->reg[i] > 0)
-			interrupt->handler[i](pm2, interrupt->reg[i]);
-	}
+			if (interrupt->reg[i] > 0)
+				interrupt->handler[i](pm2, interrupt->reg[i]);
+		}
+	} while (gpio_get_value(pm2->pdata->gpio_irq_number) == 0);
+
+	pm_runtime_mark_last_busy(pm2->dev);
+	pm_runtime_put_autosuspend(pm2->dev);
 
 	return IRQ_HANDLED;
 }
@@ -592,6 +617,8 @@ static int pm2xxx_charger_ac_get_property(struct power_supply *psy,
 			val->intval = POWER_SUPPLY_HEALTH_DEAD;
 		else if (pm2->flags.main_thermal_prot)
 			val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+		else if (pm2->flags.ovv)
+			val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
 		else
 			val->intval = POWER_SUPPLY_HEALTH_GOOD;
 		break;
@@ -674,10 +701,6 @@ static int pm2xxx_charging_init(struct pm2xxx_charger *pm2)
 	ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_LOW_LEV_COMP_REG,
 		PM2XXX_VBAT_LOW_MONITORING_ENA);
 
-	/* Disable LED */
-	ret = pm2xxx_reg_write(pm2, PM2XXX_LED_CTRL_REG,
-		PM2XXX_LED_SELECT_DIS);
-
 	return ret;
 }
 
@@ -822,10 +845,54 @@ static void pm2xxx_charger_ac_work(struct work_struct *work)
 	sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present");
 };
 
+static void pm2xxx_charger_check_hw_failure_work(struct work_struct *work)
+{
+	u8 reg_value;
+
+	struct pm2xxx_charger *pm2 = container_of(work,
+		struct pm2xxx_charger, check_hw_failure_work.work);
+
+	if (pm2->flags.ovv) {
+		pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT4, &reg_value);
+
+		if (!(reg_value & (PM2XXX_INT4_S_ITVPWR1OVV |
+					PM2XXX_INT4_S_ITVPWR2OVV))) {
+			pm2->flags.ovv = false;
+			power_supply_changed(&pm2->ac_chg.psy);
+		}
+	}
+
+	/* If we still have a failure, schedule a new check */
+	if (pm2->flags.ovv) {
+		queue_delayed_work(pm2->charger_wq,
+			&pm2->check_hw_failure_work, round_jiffies(HZ));
+	}
+}
+
 static void pm2xxx_charger_check_main_thermal_prot_work(
 	struct work_struct *work)
 {
-};
+	int ret;
+	u8 val;
+
+	struct pm2xxx_charger *pm2 = container_of(work, struct pm2xxx_charger,
+					check_main_thermal_prot_work);
+
+	/* Check if die temp warning is still active */
+	ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT5, &val);
+	if (ret < 0) {
+		dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__);
+		return;
+	}
+	if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGRISE
+			| PM2XXX_INT5_S_ITTHERMALSHUTDOWNRISE))
+		pm2->flags.main_thermal_prot = true;
+	else if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGFALL
+				| PM2XXX_INT5_S_ITTHERMALSHUTDOWNFALL))
+		pm2->flags.main_thermal_prot = false;
+
+	power_supply_changed(&pm2->ac_chg.psy);
+}
 
 static struct pm2xxx_interrupts pm2xxx_int = {
 	.handler[0] = pm2_int_reg0,
@@ -840,24 +907,105 @@ static struct pm2xxx_irq pm2xxx_charger_irq[] = {
 	{"PM2XXX_IRQ_INT", pm2xxx_irq_int},
 };
 
-static int pm2xxx_wall_charger_resume(struct i2c_client *i2c_client)
+#ifdef CONFIG_PM
+
+#ifdef CONFIG_PM_SLEEP
+
+static int pm2xxx_wall_charger_resume(struct device *dev)
 {
+	struct i2c_client *i2c_client = to_i2c_client(dev);
+	struct pm2xxx_charger *pm2;
+
+	pm2 =  (struct pm2xxx_charger *)i2c_get_clientdata(i2c_client);
+	set_lpn_pin(pm2);
+
+	/* If we still have a HW failure, schedule a new check */
+	if (pm2->flags.ovv)
+		queue_delayed_work(pm2->charger_wq,
+				&pm2->check_hw_failure_work, 0);
+
 	return 0;
 }
 
-static int pm2xxx_wall_charger_suspend(struct i2c_client *i2c_client,
-	pm_message_t state)
+static int pm2xxx_wall_charger_suspend(struct device *dev)
 {
+	struct i2c_client *i2c_client = to_i2c_client(dev);
+	struct pm2xxx_charger *pm2;
+
+	pm2 =  (struct pm2xxx_charger *)i2c_get_clientdata(i2c_client);
+	clear_lpn_pin(pm2);
+
+	/* Cancel any pending HW failure check */
+	if (delayed_work_pending(&pm2->check_hw_failure_work))
+		cancel_delayed_work(&pm2->check_hw_failure_work);
+
+	flush_work(&pm2->ac_work);
+	flush_work(&pm2->check_main_thermal_prot_work);
+
 	return 0;
 }
 
-static int __devinit pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
+#endif
+
+#ifdef CONFIG_PM_RUNTIME
+
+static int  pm2xxx_runtime_suspend(struct device *dev)
+{
+	struct i2c_client *pm2xxx_i2c_client = to_i2c_client(dev);
+	struct pm2xxx_charger *pm2;
+	int ret = 0;
+
+	pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(pm2xxx_i2c_client);
+	if (!pm2) {
+		dev_err(pm2->dev, "no pm2xxx_charger data supplied\n");
+		ret = -EINVAL;
+		return ret;
+	}
+
+	clear_lpn_pin(pm2);
+
+	return ret;
+}
+
+static int  pm2xxx_runtime_resume(struct device *dev)
+{
+	struct i2c_client *pm2xxx_i2c_client = to_i2c_client(dev);
+	struct pm2xxx_charger *pm2;
+	int ret = 0;
+
+	pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(pm2xxx_i2c_client);
+	if (!pm2) {
+		dev_err(pm2->dev, "no pm2xxx_charger data supplied\n");
+		ret = -EINVAL;
+		return ret;
+	}
+
+	if (gpio_is_valid(pm2->lpn_pin) && gpio_get_value(pm2->lpn_pin) == 0)
+		set_lpn_pin(pm2);
+
+	return ret;
+}
+
+#endif
+
+static const struct dev_pm_ops pm2xxx_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(pm2xxx_wall_charger_suspend,
+		pm2xxx_wall_charger_resume)
+	SET_RUNTIME_PM_OPS(pm2xxx_runtime_suspend, pm2xxx_runtime_resume, NULL)
+};
+#define  PM2XXX_PM_OPS (&pm2xxx_pm_ops)
+#else
+#define  PM2XXX_PM_OPS  NULL
+#endif
+
+static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
 		const struct i2c_device_id *id)
 {
 	struct pm2xxx_platform_data *pl_data = i2c_client->dev.platform_data;
 	struct pm2xxx_charger *pm2;
 	int ret = 0;
 	u8 val;
+	int i;
 
 	pm2 = kzalloc(sizeof(struct pm2xxx_charger), GFP_KERNEL);
 	if (!pm2) {
@@ -867,7 +1015,6 @@ static int __devinit pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
 
 	/* get parent data */
 	pm2->dev = &i2c_client->dev;
-	pm2->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
 
 	pm2->pm2_int = &pm2xxx_int;
 
@@ -889,14 +1036,6 @@ static int __devinit pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
 
 	pm2->bat = pl_data->battery;
 
-	/*get lpn GPIO from platform data*/
-	if (!pm2->pdata->lpn_gpio) {
-		dev_err(pm2->dev, "no lpn gpio data supplied\n");
-		ret = -EINVAL;
-		goto free_device_info;
-	}
-	pm2->lpn_pin = pm2->pdata->lpn_gpio;
-
 	if (!i2c_check_functionality(i2c_client->adapter,
 			I2C_FUNC_SMBUS_BYTE_DATA |
 			I2C_FUNC_SMBUS_READ_WORD_DATA)) {
@@ -945,6 +1084,10 @@ static int __devinit pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
 	INIT_WORK(&pm2->check_main_thermal_prot_work,
 		pm2xxx_charger_check_main_thermal_prot_work);
 
+	/* Init work for HW failure check */
+	INIT_DEFERRABLE_WORK(&pm2->check_hw_failure_work,
+		pm2xxx_charger_check_hw_failure_work);
+
 	/*
 	 * VDD ADC supply needs to be enabled from this driver when there
 	 * is a charger connected to avoid erroneous BTEMP_HIGH/LOW
@@ -965,40 +1108,72 @@ static int __devinit pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
 	}
 
 	/* Register interrupts */
-	ret = request_threaded_irq(pm2->pdata->irq_number, NULL,
+	ret = request_threaded_irq(gpio_to_irq(pm2->pdata->gpio_irq_number),
+				NULL,
 				pm2xxx_charger_irq[0].isr,
 				pm2->pdata->irq_type,
 				pm2xxx_charger_irq[0].name, pm2);
 
 	if (ret != 0) {
 		dev_err(pm2->dev, "failed to request %s IRQ %d: %d\n",
-		pm2xxx_charger_irq[0].name, pm2->pdata->irq_number, ret);
+		pm2xxx_charger_irq[0].name,
+			gpio_to_irq(pm2->pdata->gpio_irq_number), ret);
 		goto unregister_pm2xxx_charger;
 	}
 
-	/*Initialize lock*/
-	mutex_init(&pm2->lock);
+	ret = pm_runtime_set_active(pm2->dev);
+	if (ret)
+		dev_err(pm2->dev, "set active Error\n");
 
-	/*
-	 * Charger detection mechanism requires pulling up the LPN pin
-	 * while i2c communication if Charger is not connected
-	 * LPN pin of PM2301 is GPIO60 of AB9540
-	 */
-	ret = gpio_request(pm2->lpn_pin, "pm2301_lpm_gpio");
-	if (ret < 0) {
-		dev_err(pm2->dev, "pm2301_lpm_gpio request failed\n");
-		goto unregister_pm2xxx_charger;
+	pm_runtime_enable(pm2->dev);
+	pm_runtime_set_autosuspend_delay(pm2->dev, PM2XXX_AUTOSUSPEND_DELAY);
+	pm_runtime_use_autosuspend(pm2->dev);
+	pm_runtime_resume(pm2->dev);
+
+	/* pm interrupt can wake up system */
+	ret = enable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number));
+	if (ret) {
+		dev_err(pm2->dev, "failed to set irq wake\n");
+		goto unregister_pm2xxx_interrupt;
 	}
-	ret = gpio_direction_output(pm2->lpn_pin, 0);
-	if (ret < 0) {
-		dev_err(pm2->dev, "pm2301_lpm_gpio direction failed\n");
-		goto free_gpio;
+
+	mutex_init(&pm2->lock);
+
+	if (gpio_is_valid(pm2->pdata->lpn_gpio)) {
+		/* get lpn GPIO from platform data */
+		pm2->lpn_pin = pm2->pdata->lpn_gpio;
+
+		/*
+		 * Charger detection mechanism requires pulling up the LPN pin
+		 * while i2c communication if Charger is not connected
+		 * LPN pin of PM2301 is GPIO60 of AB9540
+		 */
+		ret = gpio_request(pm2->lpn_pin, "pm2301_lpm_gpio");
+
+		if (ret < 0) {
+			dev_err(pm2->dev, "pm2301_lpm_gpio request failed\n");
+			goto disable_pm2_irq_wake;
+		}
+		ret = gpio_direction_output(pm2->lpn_pin, 0);
+		if (ret < 0) {
+			dev_err(pm2->dev, "pm2301_lpm_gpio direction failed\n");
+			goto free_gpio;
+		}
+		set_lpn_pin(pm2);
 	}
 
+	/* read  interrupt registers */
+	for (i = 0; i < PM2XXX_NUM_INT_REG; i++)
+		pm2xxx_reg_read(pm2,
+			pm2xxx_interrupt_registers[i],
+			&val);
+
 	ret = pm2xxx_charger_detection(pm2, &val);
 
 	if ((ret == 0) && val) {
 		pm2->ac.charger_connected = 1;
+		ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON,
+					     AB8500_MAIN_CH_DET);
 		pm2->ac_conn = true;
 		power_supply_changed(&pm2->ac_chg.psy);
 		sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present");
@@ -1007,7 +1182,13 @@ static int __devinit pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
 	return 0;
 
 free_gpio:
-	gpio_free(pm2->lpn_pin);
+	if (gpio_is_valid(pm2->lpn_pin))
+		gpio_free(pm2->lpn_pin);
+disable_pm2_irq_wake:
+	disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number));
+unregister_pm2xxx_interrupt:
+	/* disable interrupt */
+	free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2);
 unregister_pm2xxx_charger:
 	/* unregister power supply */
 	power_supply_unregister(&pm2->ac_chg.psy);
@@ -1018,18 +1199,24 @@ free_charger_wq:
 	destroy_workqueue(pm2->charger_wq);
 free_device_info:
 	kfree(pm2);
+
 	return ret;
 }
 
-static int __devexit pm2xxx_wall_charger_remove(struct i2c_client *i2c_client)
+static int pm2xxx_wall_charger_remove(struct i2c_client *i2c_client)
 {
 	struct pm2xxx_charger *pm2 = i2c_get_clientdata(i2c_client);
 
+	/* Disable pm_runtime */
+	pm_runtime_disable(pm2->dev);
 	/* Disable AC charging */
 	pm2xxx_charger_ac_en(&pm2->ac_chg, false, 0, 0);
 
+	/* Disable wake by pm interrupt */
+	disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number));
+
 	/* Disable interrupts */
-	free_irq(pm2->pdata->irq_number, pm2);
+	free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2);
 
 	/* Delete the work queue */
 	destroy_workqueue(pm2->charger_wq);
@@ -1041,8 +1228,8 @@ static int __devexit pm2xxx_wall_charger_remove(struct i2c_client *i2c_client)
 
 	power_supply_unregister(&pm2->ac_chg.psy);
 
-	/*Free GPIO60*/
-	gpio_free(pm2->lpn_pin);
+	if (gpio_is_valid(pm2->lpn_pin))
+		gpio_free(pm2->lpn_pin);
 
 	kfree(pm2);
 
@@ -1058,12 +1245,11 @@ MODULE_DEVICE_TABLE(i2c, pm2xxx_id);
 
 static struct i2c_driver pm2xxx_charger_driver = {
 	.probe = pm2xxx_wall_charger_probe,
-	.remove = __devexit_p(pm2xxx_wall_charger_remove),
-	.suspend = pm2xxx_wall_charger_suspend,
-	.resume = pm2xxx_wall_charger_resume,
+	.remove = pm2xxx_wall_charger_remove,
 	.driver = {
 		.name = "pm2xxx-wall_charger",
 		.owner = THIS_MODULE,
+		.pm = PM2XXX_PM_OPS,
 	},
 	.id_table = pm2xxx_id,
 };
@@ -1078,11 +1264,10 @@ static void __exit pm2xxx_charger_exit(void)
 	i2c_del_driver(&pm2xxx_charger_driver);
 }
 
-subsys_initcall_sync(pm2xxx_charger_init);
+device_initcall_sync(pm2xxx_charger_init);
 module_exit(pm2xxx_charger_exit);
 
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Rajkumar kasirajan, Olivier Launay");
 MODULE_ALIAS("platform:pm2xxx-charger");
 MODULE_DESCRIPTION("PM2xxx charger management driver");
-
diff --git a/drivers/power/pm2301_charger.h b/drivers/power/pm2301_charger.h
index e6319cdbc94f..8ce3cc0195df 100644
--- a/drivers/power/pm2301_charger.h
+++ b/drivers/power/pm2301_charger.h
@@ -9,27 +9,6 @@
 #ifndef PM2301_CHARGER_H
 #define PM2301_CHARGER_H
 
-#define MAIN_WDOG_ENA			0x01
-#define MAIN_WDOG_KICK			0x02
-#define MAIN_WDOG_DIS			0x00
-#define CHARG_WD_KICK			0x01
-#define MAIN_CH_ENA			0x01
-#define MAIN_CH_NO_OVERSHOOT_ENA_N	0x02
-#define MAIN_CH_DET			0x01
-#define MAIN_CH_CV_ON			0x04
-#define OTP_ENABLE_WD			0x01
-
-#define MAIN_CH_INPUT_CURR_SHIFT	4
-
-#define LED_INDICATOR_PWM_ENA		0x01
-#define LED_INDICATOR_PWM_DIS		0x00
-#define LED_IND_CUR_5MA			0x04
-#define LED_INDICATOR_PWM_DUTY_252_256	0xBF
-
-/* HW failure constants */
-#define MAIN_CH_TH_PROT			0x02
-#define MAIN_CH_NOK			0x01
-
 /* Watchdog timeout constant */
 #define WD_TIMER			0x30 /* 4min */
 #define WD_KICK_INTERVAL		(30 * HZ)
@@ -495,7 +474,6 @@ struct pm2xxx_charger {
 	int failure_input_ovv;
 	unsigned int lpn_pin;
 	struct pm2xxx_interrupts *pm2_int;
-	struct ab8500_gpadc *gpadc;
 	struct regulator *regu;
 	struct pm2xxx_bm_data *bat;
 	struct mutex lock;
@@ -506,6 +484,7 @@ struct pm2xxx_charger {
 	struct delayed_work check_vbat_work;
 	struct work_struct ac_work;
 	struct work_struct check_main_thermal_prot_work;
+	struct delayed_work check_hw_failure_work;
 	struct ux500_charger ac_chg;
 	struct pm2xxx_charger_event_flags flags;
 };
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index 5deac432e2ae..1c517c34e4be 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -26,17 +26,42 @@ EXPORT_SYMBOL_GPL(power_supply_class);
 
 static struct device_type power_supply_dev_type;
 
+static bool __power_supply_is_supplied_by(struct power_supply *supplier,
+					 struct power_supply *supply)
+{
+	int i;
+
+	if (!supply->supplied_from && !supplier->supplied_to)
+		return false;
+
+	/* Support both supplied_to and supplied_from modes */
+	if (supply->supplied_from) {
+		if (!supplier->name)
+			return false;
+		for (i = 0; i < supply->num_supplies; i++)
+			if (!strcmp(supplier->name, supply->supplied_from[i]))
+				return true;
+	} else {
+		if (!supply->name)
+			return false;
+		for (i = 0; i < supplier->num_supplicants; i++)
+			if (!strcmp(supplier->supplied_to[i], supply->name))
+				return true;
+	}
+
+	return false;
+}
+
 static int __power_supply_changed_work(struct device *dev, void *data)
 {
 	struct power_supply *psy = (struct power_supply *)data;
 	struct power_supply *pst = dev_get_drvdata(dev);
-	int i;
 
-	for (i = 0; i < psy->num_supplicants; i++)
-		if (!strcmp(psy->supplied_to[i], pst->name)) {
-			if (pst->external_power_changed)
-				pst->external_power_changed(pst);
-		}
+	if (__power_supply_is_supplied_by(psy, pst)) {
+		if (pst->external_power_changed)
+			pst->external_power_changed(pst);
+	}
+
 	return 0;
 }
 
@@ -63,22 +88,151 @@ void power_supply_changed(struct power_supply *psy)
 }
 EXPORT_SYMBOL_GPL(power_supply_changed);
 
+#ifdef CONFIG_OF
+#include <linux/of.h>
+
+static int __power_supply_populate_supplied_from(struct device *dev,
+						 void *data)
+{
+	struct power_supply *psy = (struct power_supply *)data;
+	struct power_supply *epsy = dev_get_drvdata(dev);
+	struct device_node *np;
+	int i = 0;
+
+	do {
+		np = of_parse_phandle(psy->of_node, "power-supplies", i++);
+		if (!np)
+			continue;
+
+		if (np == epsy->of_node) {
+			dev_info(psy->dev, "%s: Found supply : %s\n",
+				psy->name, epsy->name);
+			psy->supplied_from[i-1] = (char *)epsy->name;
+			psy->num_supplies++;
+			break;
+		}
+	} while (np);
+
+	return 0;
+}
+
+static int power_supply_populate_supplied_from(struct power_supply *psy)
+{
+	int error;
+
+	error = class_for_each_device(power_supply_class, NULL, psy,
+				      __power_supply_populate_supplied_from);
+
+	dev_dbg(psy->dev, "%s %d\n", __func__, error);
+
+	return error;
+}
+
+static int  __power_supply_find_supply_from_node(struct device *dev,
+						 void *data)
+{
+	struct device_node *np = (struct device_node *)data;
+	struct power_supply *epsy = dev_get_drvdata(dev);
+
+	/* return error breaks out of class_for_each_device loop */
+	if (epsy->of_node == np)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int power_supply_find_supply_from_node(struct device_node *supply_node)
+{
+	int error;
+	struct device *dev;
+	struct class_dev_iter iter;
+
+	/*
+	 * Use iterator to see if any other device is registered.
+	 * This is required since class_for_each_device returns 0
+	 * if there are no devices registered.
+	 */
+	class_dev_iter_init(&iter, power_supply_class, NULL, NULL);
+	dev = class_dev_iter_next(&iter);
+
+	if (!dev)
+		return -EPROBE_DEFER;
+
+	/*
+	 * We have to treat the return value as inverted, because if
+	 * we return error on not found, then it won't continue looking.
+	 * So we trick it by returning error on success to stop looking
+	 * once the matching device is found.
+	 */
+	error = class_for_each_device(power_supply_class, NULL, supply_node,
+				       __power_supply_find_supply_from_node);
+
+	return error ? 0 : -EPROBE_DEFER;
+}
+
+static int power_supply_check_supplies(struct power_supply *psy)
+{
+	struct device_node *np;
+	int cnt = 0;
+
+	/* If there is already a list honor it */
+	if (psy->supplied_from && psy->num_supplies > 0)
+		return 0;
+
+	/* No device node found, nothing to do */
+	if (!psy->of_node)
+		return 0;
+
+	do {
+		int ret;
+
+		np = of_parse_phandle(psy->of_node, "power-supplies", cnt++);
+		if (!np)
+			continue;
+
+		ret = power_supply_find_supply_from_node(np);
+		if (ret) {
+			dev_dbg(psy->dev, "Failed to find supply, defer!\n");
+			return -EPROBE_DEFER;
+		}
+	} while (np);
+
+	/* All supplies found, allocate char ** array for filling */
+	psy->supplied_from = devm_kzalloc(psy->dev, sizeof(psy->supplied_from),
+					  GFP_KERNEL);
+	if (!psy->supplied_from) {
+		dev_err(psy->dev, "Couldn't allocate memory for supply list\n");
+		return -ENOMEM;
+	}
+
+	*psy->supplied_from = devm_kzalloc(psy->dev, sizeof(char *) * cnt,
+					   GFP_KERNEL);
+	if (!*psy->supplied_from) {
+		dev_err(psy->dev, "Couldn't allocate memory for supply list\n");
+		return -ENOMEM;
+	}
+
+	return power_supply_populate_supplied_from(psy);
+}
+#else
+static inline int power_supply_check_supplies(struct power_supply *psy)
+{
+	return 0;
+}
+#endif
+
 static int __power_supply_am_i_supplied(struct device *dev, void *data)
 {
 	union power_supply_propval ret = {0,};
 	struct power_supply *psy = (struct power_supply *)data;
 	struct power_supply *epsy = dev_get_drvdata(dev);
-	int i;
 
-	for (i = 0; i < epsy->num_supplicants; i++) {
-		if (!strcmp(epsy->supplied_to[i], psy->name)) {
-			if (epsy->get_property(epsy,
-				  POWER_SUPPLY_PROP_ONLINE, &ret))
-				continue;
+	if (__power_supply_is_supplied_by(epsy, psy))
+		if (!epsy->get_property(epsy, POWER_SUPPLY_PROP_ONLINE, &ret)) {
 			if (ret.intval)
 				return ret.intval;
 		}
-	}
+
 	return 0;
 }
 
@@ -336,6 +490,12 @@ int power_supply_register(struct device *parent, struct power_supply *psy)
 
 	INIT_WORK(&psy->changed_work, power_supply_changed_work);
 
+	rc = power_supply_check_supplies(psy);
+	if (rc) {
+		dev_info(dev, "Not all required supplies found, defer probe\n");
+		goto check_supplies_failed;
+	}
+
 	rc = kobject_set_name(&dev->kobj, "%s", psy->name);
 	if (rc)
 		goto kobject_set_name_failed;
@@ -368,6 +528,7 @@ register_thermal_failed:
 	device_del(dev);
 kobject_set_name_failed:
 device_add_failed:
+check_supplies_failed:
 	put_device(dev);
 success:
 	return rc;
diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig
index 1ae65b822864..349e9ae8090a 100644
--- a/drivers/power/reset/Kconfig
+++ b/drivers/power/reset/Kconfig
@@ -30,3 +30,10 @@ config POWER_RESET_RESTART
 	  Some boards don't actually have the ability to power off.
 	  Instead they restart, and u-boot holds the SoC until the
 	  user presses a key. u-boot then boots into Linux.
+
+config POWER_RESET_VEXPRESS
+	bool
+	depends on POWER_RESET
+	help
+	  Power off and reset support for the ARM Ltd. Versatile
+	  Express boards.
diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile
index 0f317f50c56f..372807fd83f7 100644
--- a/drivers/power/reset/Makefile
+++ b/drivers/power/reset/Makefile
@@ -1,3 +1,4 @@
 obj-$(CONFIG_POWER_RESET_GPIO) += gpio-poweroff.o
 obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o
-obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o
\ No newline at end of file
+obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o
+obj-$(CONFIG_POWER_RESET_VEXPRESS) += vexpress-poweroff.o
diff --git a/drivers/power/reset/vexpress-poweroff.c b/drivers/power/reset/vexpress-poweroff.c
new file mode 100644
index 000000000000..469e6962b2cf
--- /dev/null
+++ b/drivers/power/reset/vexpress-poweroff.c
@@ -0,0 +1,146 @@
+/*
+ * 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.
+ *
+ * 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.
+ *
+ * Copyright (C) 2012 ARM Limited
+ */
+
+#include <linux/jiffies.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/stat.h>
+#include <linux/vexpress.h>
+
+#include <asm/system_misc.h>
+
+static void vexpress_reset_do(struct device *dev, const char *what)
+{
+	int err = -ENOENT;
+	struct vexpress_config_func *func =
+			vexpress_config_func_get_by_dev(dev);
+
+	if (func) {
+		unsigned long timeout;
+
+		err = vexpress_config_write(func, 0, 0);
+
+		timeout = jiffies + HZ;
+		while (time_before(jiffies, timeout))
+			cpu_relax();
+	}
+
+	dev_emerg(dev, "Unable to %s (%d)\n", what, err);
+}
+
+static struct device *vexpress_power_off_device;
+
+static void vexpress_power_off(void)
+{
+	vexpress_reset_do(vexpress_power_off_device, "power off");
+}
+
+static struct device *vexpress_restart_device;
+
+static void vexpress_restart(char str, const char *cmd)
+{
+	vexpress_reset_do(vexpress_restart_device, "restart");
+}
+
+static ssize_t vexpress_reset_active_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "%d\n", vexpress_restart_device == dev);
+}
+
+static ssize_t vexpress_reset_active_store(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	long value;
+	int err = kstrtol(buf, 0, &value);
+
+	if (!err && value)
+		vexpress_restart_device = dev;
+
+	return err ? err : count;
+}
+
+DEVICE_ATTR(active, S_IRUGO | S_IWUSR, vexpress_reset_active_show,
+		vexpress_reset_active_store);
+
+
+enum vexpress_reset_func { FUNC_RESET, FUNC_SHUTDOWN, FUNC_REBOOT };
+
+static struct of_device_id vexpress_reset_of_match[] = {
+	{
+		.compatible = "arm,vexpress-reset",
+		.data = (void *)FUNC_RESET,
+	}, {
+		.compatible = "arm,vexpress-shutdown",
+		.data = (void *)FUNC_SHUTDOWN
+	}, {
+		.compatible = "arm,vexpress-reboot",
+		.data = (void *)FUNC_REBOOT
+	},
+	{}
+};
+
+static int vexpress_reset_probe(struct platform_device *pdev)
+{
+	enum vexpress_reset_func func;
+	const struct of_device_id *match =
+			of_match_device(vexpress_reset_of_match, &pdev->dev);
+
+	if (match)
+		func = (enum vexpress_reset_func)match->data;
+	else
+		func = pdev->id_entry->driver_data;
+
+	switch (func) {
+	case FUNC_SHUTDOWN:
+		vexpress_power_off_device = &pdev->dev;
+		pm_power_off = vexpress_power_off;
+		break;
+	case FUNC_RESET:
+		if (!vexpress_restart_device)
+			vexpress_restart_device = &pdev->dev;
+		arm_pm_restart = vexpress_restart;
+		device_create_file(&pdev->dev, &dev_attr_active);
+		break;
+	case FUNC_REBOOT:
+		vexpress_restart_device = &pdev->dev;
+		arm_pm_restart = vexpress_restart;
+		device_create_file(&pdev->dev, &dev_attr_active);
+		break;
+	};
+
+	return 0;
+}
+
+static const struct platform_device_id vexpress_reset_id_table[] = {
+	{ .name = "vexpress-reset", .driver_data = FUNC_RESET, },
+	{ .name = "vexpress-shutdown", .driver_data = FUNC_SHUTDOWN, },
+	{ .name = "vexpress-reboot", .driver_data = FUNC_REBOOT, },
+	{}
+};
+
+static struct platform_driver vexpress_reset_driver = {
+	.probe = vexpress_reset_probe,
+	.driver = {
+		.name = "vexpress-reset",
+		.of_match_table = vexpress_reset_of_match,
+	},
+	.id_table = vexpress_reset_id_table,
+};
+
+static int __init vexpress_reset_init(void)
+{
+	return platform_driver_register(&vexpress_reset_driver);
+}
+device_initcall(vexpress_reset_init);
diff --git a/drivers/power/rx51_battery.c b/drivers/power/rx51_battery.c
index 8208888b844e..1a1dcb831a17 100644
--- a/drivers/power/rx51_battery.c
+++ b/drivers/power/rx51_battery.c
@@ -119,7 +119,7 @@ static int rx51_battery_read_temperature(struct rx51_device_info *di)
 
 	/* First check for temperature in first direct table */
 	if (raw < ARRAY_SIZE(rx51_temp_table1))
-		return rx51_temp_table1[raw] * 100;
+		return rx51_temp_table1[raw] * 10;
 
 	/* Binary search RAW value in second inverse table */
 	while (max - min > 1) {
@@ -132,7 +132,7 @@ static int rx51_battery_read_temperature(struct rx51_device_info *di)
 			break;
 	}
 
-	return (rx51_temp_table2_first - min) * 100;
+	return (rx51_temp_table2_first - min) * 10;
 }
 
 /*
@@ -202,7 +202,7 @@ static int rx51_battery_probe(struct platform_device *pdev)
 	struct rx51_device_info *di;
 	int ret;
 
-	di = kzalloc(sizeof(*di), GFP_KERNEL);
+	di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
 	if (!di)
 		return -ENOMEM;
 
@@ -217,7 +217,6 @@ static int rx51_battery_probe(struct platform_device *pdev)
 	ret = power_supply_register(di->dev, &di->bat);
 	if (ret) {
 		platform_set_drvdata(pdev, NULL);
-		kfree(di);
 		return ret;
 	}
 
@@ -230,7 +229,6 @@ static int rx51_battery_remove(struct platform_device *pdev)
 
 	power_supply_unregister(&di->bat);
 	platform_set_drvdata(pdev, NULL);
-	kfree(di);
 
 	return 0;
 }
diff --git a/drivers/power/s3c_adc_battery.c b/drivers/power/s3c_adc_battery.c
index d2ca989dcbdc..5948ce058bdd 100644
--- a/drivers/power/s3c_adc_battery.c
+++ b/drivers/power/s3c_adc_battery.c
@@ -145,14 +145,17 @@ static int s3c_adc_bat_get_property(struct power_supply *psy,
 
 	int new_level;
 	int full_volt;
-	const struct s3c_adc_bat_thresh *lut = bat->pdata->lut_noac;
-	unsigned int lut_size = bat->pdata->lut_noac_cnt;
+	const struct s3c_adc_bat_thresh *lut;
+	unsigned int lut_size;
 
 	if (!bat) {
 		dev_err(psy->dev, "no battery infos ?!\n");
 		return -EINVAL;
 	}
 
+	lut = bat->pdata->lut_noac;
+	lut_size = bat->pdata->lut_noac_cnt;
+
 	if (bat->volt_value < 0 || bat->cur_value < 0 ||
 		jiffies_to_msecs(jiffies - bat->timestamp) >
 			BAT_POLL_INTERVAL) {
diff --git a/drivers/power/sbs-battery.c b/drivers/power/sbs-battery.c
index 3960f0b2afe9..c8c78a74e75a 100644
--- a/drivers/power/sbs-battery.c
+++ b/drivers/power/sbs-battery.c
@@ -27,6 +27,7 @@
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/gpio.h>
+#include <linux/of.h>
 
 #include <linux/power/sbs-battery.h>
 
@@ -667,7 +668,6 @@ of_out:
 	return pdata;
 }
 #else
-#define sbs_dt_ids NULL
 static struct sbs_platform_data *sbs_of_populate_pdata(
 	struct i2c_client *client)
 {
@@ -820,10 +820,11 @@ static int sbs_remove(struct i2c_client *client)
 	return 0;
 }
 
-#if defined CONFIG_PM
-static int sbs_suspend(struct i2c_client *client,
-	pm_message_t state)
+#if defined CONFIG_PM_SLEEP
+
+static int sbs_suspend(struct device *dev)
 {
+	struct i2c_client *client = to_i2c_client(dev);
 	struct sbs_info *chip = i2c_get_clientdata(client);
 	s32 ret;
 
@@ -838,11 +839,13 @@ static int sbs_suspend(struct i2c_client *client,
 
 	return 0;
 }
+
+static SIMPLE_DEV_PM_OPS(sbs_pm_ops, sbs_suspend, NULL);
+#define SBS_PM_OPS (&sbs_pm_ops)
+
 #else
-#define sbs_suspend		NULL
+#define SBS_PM_OPS NULL
 #endif
-/* any smbus transaction will wake up sbs */
-#define sbs_resume		NULL
 
 static const struct i2c_device_id sbs_id[] = {
 	{ "bq20z75", 0 },
@@ -854,12 +857,11 @@ MODULE_DEVICE_TABLE(i2c, sbs_id);
 static struct i2c_driver sbs_battery_driver = {
 	.probe		= sbs_probe,
 	.remove		= sbs_remove,
-	.suspend	= sbs_suspend,
-	.resume		= sbs_resume,
 	.id_table	= sbs_id,
 	.driver = {
 		.name	= "sbs-battery",
-		.of_match_table = sbs_dt_ids,
+		.of_match_table = of_match_ptr(sbs_dt_ids),
+		.pm	= SBS_PM_OPS,
 	},
 };
 module_i2c_driver(sbs_battery_driver);
diff --git a/drivers/power/test_power.c b/drivers/power/test_power.c
index b99a452a4fda..0152f35dca5c 100644
--- a/drivers/power/test_power.c
+++ b/drivers/power/test_power.c
@@ -30,6 +30,8 @@ static int battery_technology		= POWER_SUPPLY_TECHNOLOGY_LION;
 static int battery_capacity		= 50;
 static int battery_voltage		= 3300;
 
+static bool module_initialized;
+
 static int test_power_get_ac_property(struct power_supply *psy,
 				      enum power_supply_property psp,
 				      union power_supply_propval *val)
@@ -185,6 +187,7 @@ static int __init test_power_init(void)
 		}
 	}
 
+	module_initialized = true;
 	return 0;
 failed:
 	while (--i >= 0)
@@ -209,6 +212,8 @@ static void __exit test_power_exit(void)
 
 	for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
 		power_supply_unregister(&test_power_supplies[i]);
+
+	module_initialized = false;
 }
 module_exit(test_power_exit);
 
@@ -221,8 +226,8 @@ struct battery_property_map {
 };
 
 static struct battery_property_map map_ac_online[] = {
-	{ 0,  "on"  },
-	{ 1,  "off" },
+	{ 0,  "off"  },
+	{ 1,  "on" },
 	{ -1, NULL  },
 };
 
@@ -295,10 +300,16 @@ static const char *map_get_key(struct battery_property_map *map, int value,
 	return def_key;
 }
 
+static inline void signal_power_supply_changed(struct power_supply *psy)
+{
+	if (module_initialized)
+		power_supply_changed(psy);
+}
+
 static int param_set_ac_online(const char *key, const struct kernel_param *kp)
 {
 	ac_online = map_get_value(map_ac_online, key, ac_online);
-	power_supply_changed(&test_power_supplies[0]);
+	signal_power_supply_changed(&test_power_supplies[0]);
 	return 0;
 }
 
@@ -311,7 +322,7 @@ static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
 static int param_set_usb_online(const char *key, const struct kernel_param *kp)
 {
 	usb_online = map_get_value(map_ac_online, key, usb_online);
-	power_supply_changed(&test_power_supplies[2]);
+	signal_power_supply_changed(&test_power_supplies[2]);
 	return 0;
 }
 
@@ -325,7 +336,7 @@ static int param_set_battery_status(const char *key,
 					const struct kernel_param *kp)
 {
 	battery_status = map_get_value(map_status, key, battery_status);
-	power_supply_changed(&test_power_supplies[1]);
+	signal_power_supply_changed(&test_power_supplies[1]);
 	return 0;
 }
 
@@ -339,7 +350,7 @@ static int param_set_battery_health(const char *key,
 					const struct kernel_param *kp)
 {
 	battery_health = map_get_value(map_health, key, battery_health);
-	power_supply_changed(&test_power_supplies[1]);
+	signal_power_supply_changed(&test_power_supplies[1]);
 	return 0;
 }
 
@@ -353,7 +364,7 @@ static int param_set_battery_present(const char *key,
 					const struct kernel_param *kp)
 {
 	battery_present = map_get_value(map_present, key, battery_present);
-	power_supply_changed(&test_power_supplies[0]);
+	signal_power_supply_changed(&test_power_supplies[0]);
 	return 0;
 }
 
@@ -369,7 +380,7 @@ static int param_set_battery_technology(const char *key,
 {
 	battery_technology = map_get_value(map_technology, key,
 						battery_technology);
-	power_supply_changed(&test_power_supplies[1]);
+	signal_power_supply_changed(&test_power_supplies[1]);
 	return 0;
 }
 
@@ -390,7 +401,7 @@ static int param_set_battery_capacity(const char *key,
 		return -EINVAL;
 
 	battery_capacity = tmp;
-	power_supply_changed(&test_power_supplies[1]);
+	signal_power_supply_changed(&test_power_supplies[1]);
 	return 0;
 }
 
@@ -405,7 +416,7 @@ static int param_set_battery_voltage(const char *key,
 		return -EINVAL;
 
 	battery_voltage = tmp;
-	power_supply_changed(&test_power_supplies[1]);
+	signal_power_supply_changed(&test_power_supplies[1]);
 	return 0;
 }
 
diff --git a/drivers/power/tps65090-charger.c b/drivers/power/tps65090-charger.c
new file mode 100644
index 000000000000..9fbca310a2ad
--- /dev/null
+++ b/drivers/power/tps65090-charger.c
@@ -0,0 +1,320 @@
+/*
+ * Battery charger driver for TI's tps65090
+ *
+ * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
+
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+
+ * This program is distributed in the hope 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.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/mfd/tps65090.h>
+
+#define TPS65090_REG_INTR_STS	0x00
+#define TPS65090_REG_CG_CTRL0	0x04
+#define TPS65090_REG_CG_CTRL1	0x05
+#define TPS65090_REG_CG_CTRL2	0x06
+#define TPS65090_REG_CG_CTRL3	0x07
+#define TPS65090_REG_CG_CTRL4	0x08
+#define TPS65090_REG_CG_CTRL5	0x09
+#define TPS65090_REG_CG_STATUS1	0x0a
+#define TPS65090_REG_CG_STATUS2	0x0b
+
+#define TPS65090_CHARGER_ENABLE	BIT(0)
+#define TPS65090_VACG		BIT(1)
+#define TPS65090_NOITERM	BIT(5)
+
+struct tps65090_charger {
+	struct	device	*dev;
+	int	ac_online;
+	int	prev_ac_online;
+	int	irq;
+	struct power_supply	ac;
+	struct tps65090_platform_data *pdata;
+};
+
+static enum power_supply_property tps65090_ac_props[] = {
+	POWER_SUPPLY_PROP_ONLINE,
+};
+
+static int tps65090_low_chrg_current(struct tps65090_charger *charger)
+{
+	int ret;
+
+	ret = tps65090_write(charger->dev->parent, TPS65090_REG_CG_CTRL5,
+			TPS65090_NOITERM);
+	if (ret < 0) {
+		dev_err(charger->dev, "%s(): error reading in register 0x%x\n",
+			__func__, TPS65090_REG_CG_CTRL5);
+		return ret;
+	}
+	return 0;
+}
+
+static int tps65090_enable_charging(struct tps65090_charger *charger,
+	uint8_t enable)
+{
+	int ret;
+	uint8_t ctrl0 = 0;
+
+	ret = tps65090_read(charger->dev->parent, TPS65090_REG_CG_CTRL0,
+			    &ctrl0);
+	if (ret < 0) {
+		dev_err(charger->dev, "%s(): error reading in register 0x%x\n",
+				__func__, TPS65090_REG_CG_CTRL0);
+		return ret;
+	}
+
+	ret = tps65090_write(charger->dev->parent, TPS65090_REG_CG_CTRL0,
+				(ctrl0 | TPS65090_CHARGER_ENABLE));
+	if (ret < 0) {
+		dev_err(charger->dev, "%s(): error reading in register 0x%x\n",
+				__func__, TPS65090_REG_CG_CTRL0);
+		return ret;
+	}
+	return 0;
+}
+
+static int tps65090_config_charger(struct tps65090_charger *charger)
+{
+	int ret;
+
+	if (charger->pdata->enable_low_current_chrg) {
+		ret = tps65090_low_chrg_current(charger);
+		if (ret < 0) {
+			dev_err(charger->dev,
+				"error configuring low charge current\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int tps65090_ac_get_property(struct power_supply *psy,
+			enum power_supply_property psp,
+			union power_supply_propval *val)
+{
+	struct tps65090_charger *charger = container_of(psy,
+					struct tps65090_charger, ac);
+
+	if (psp == POWER_SUPPLY_PROP_ONLINE) {
+		val->intval = charger->ac_online;
+		charger->prev_ac_online = charger->ac_online;
+		return 0;
+	}
+	return -EINVAL;
+}
+
+static irqreturn_t tps65090_charger_isr(int irq, void *dev_id)
+{
+	struct tps65090_charger *charger = dev_id;
+	int ret;
+	uint8_t status1 = 0;
+	uint8_t intrsts = 0;
+
+	ret = tps65090_read(charger->dev->parent, TPS65090_REG_CG_STATUS1,
+			    &status1);
+	if (ret < 0) {
+		dev_err(charger->dev, "%s(): Error in reading reg 0x%x\n",
+				__func__, TPS65090_REG_CG_STATUS1);
+		return IRQ_HANDLED;
+	}
+	msleep(75);
+	ret = tps65090_read(charger->dev->parent, TPS65090_REG_INTR_STS,
+			    &intrsts);
+	if (ret < 0) {
+		dev_err(charger->dev, "%s(): Error in reading reg 0x%x\n",
+				__func__, TPS65090_REG_INTR_STS);
+		return IRQ_HANDLED;
+	}
+
+	if (intrsts & TPS65090_VACG) {
+		ret = tps65090_enable_charging(charger, 1);
+		if (ret < 0)
+			return IRQ_HANDLED;
+		charger->ac_online = 1;
+	} else {
+		charger->ac_online = 0;
+	}
+
+	if (charger->prev_ac_online != charger->ac_online)
+		power_supply_changed(&charger->ac);
+
+	return IRQ_HANDLED;
+}
+
+#if defined(CONFIG_OF)
+
+#include <linux/of_device.h>
+
+static struct tps65090_platform_data *
+		tps65090_parse_dt_charger_data(struct platform_device *pdev)
+{
+	struct tps65090_platform_data *pdata;
+	struct device_node *np = pdev->dev.of_node;
+	unsigned int prop;
+
+	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata) {
+		dev_err(&pdev->dev, "Memory alloc for tps65090_pdata failed\n");
+		return NULL;
+	}
+
+	prop = of_property_read_bool(np, "ti,enable-low-current-chrg");
+	pdata->enable_low_current_chrg = prop;
+
+	pdata->irq_base = -1;
+
+	return pdata;
+
+}
+#else
+static struct tps65090_platform_data *
+		tps65090_parse_dt_charger_data(struct platform_device *pdev)
+{
+	return NULL;
+}
+#endif
+
+static int tps65090_charger_probe(struct platform_device *pdev)
+{
+	struct tps65090_charger *cdata;
+	struct tps65090_platform_data *pdata;
+	uint8_t status1 = 0;
+	int ret;
+	int irq;
+
+	pdata = dev_get_platdata(pdev->dev.parent);
+
+	if (!pdata && pdev->dev.of_node)
+		pdata = tps65090_parse_dt_charger_data(pdev);
+
+	if (!pdata) {
+		dev_err(&pdev->dev, "%s():no platform data available\n",
+				__func__);
+		return -ENODEV;
+	}
+
+	cdata = devm_kzalloc(&pdev->dev, sizeof(*cdata), GFP_KERNEL);
+	if (!cdata) {
+		dev_err(&pdev->dev, "failed to allocate memory status\n");
+		return -ENOMEM;
+	}
+
+	dev_set_drvdata(&pdev->dev, cdata);
+
+	cdata->dev			= &pdev->dev;
+	cdata->pdata			= pdata;
+
+	cdata->ac.name			= "tps65090-ac";
+	cdata->ac.type			= POWER_SUPPLY_TYPE_MAINS;
+	cdata->ac.get_property		= tps65090_ac_get_property;
+	cdata->ac.properties		= tps65090_ac_props;
+	cdata->ac.num_properties	= ARRAY_SIZE(tps65090_ac_props);
+	cdata->ac.supplied_to		= pdata->supplied_to;
+	cdata->ac.num_supplicants	= pdata->num_supplicants;
+
+	ret = power_supply_register(&pdev->dev, &cdata->ac);
+	if (ret) {
+		dev_err(&pdev->dev, "failed: power supply register\n");
+		return ret;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq <= 0) {
+		dev_warn(&pdev->dev, "Unable to get charger irq = %d\n", irq);
+		ret = irq;
+		goto fail_unregister_supply;
+	}
+
+	cdata->irq = irq;
+
+	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+		tps65090_charger_isr, 0, "tps65090-charger", cdata);
+	if (ret) {
+		dev_err(cdata->dev, "Unable to register irq %d err %d\n", irq,
+			ret);
+		goto fail_free_irq;
+	}
+
+	ret = tps65090_config_charger(cdata);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "charger config failed, err %d\n", ret);
+		goto fail_free_irq;
+	}
+
+	/* Check for charger presence */
+	ret = tps65090_read(cdata->dev->parent, TPS65090_REG_CG_STATUS1,
+			&status1);
+	if (ret < 0) {
+		dev_err(cdata->dev, "%s(): Error in reading reg 0x%x", __func__,
+			TPS65090_REG_CG_STATUS1);
+		goto fail_free_irq;
+	}
+
+	if (status1 != 0) {
+		ret = tps65090_enable_charging(cdata, 1);
+		if (ret < 0) {
+			dev_err(cdata->dev, "error enabling charger\n");
+			goto fail_free_irq;
+		}
+		cdata->ac_online = 1;
+		power_supply_changed(&cdata->ac);
+	}
+
+	return 0;
+
+fail_free_irq:
+	devm_free_irq(cdata->dev, irq, cdata);
+fail_unregister_supply:
+	power_supply_unregister(&cdata->ac);
+
+	return ret;
+}
+
+static int tps65090_charger_remove(struct platform_device *pdev)
+{
+	struct tps65090_charger *cdata = dev_get_drvdata(&pdev->dev);
+
+	devm_free_irq(cdata->dev, cdata->irq, cdata);
+	power_supply_unregister(&cdata->ac);
+
+	return 0;
+}
+
+static struct of_device_id of_tps65090_charger_match[] = {
+	{ .compatible = "ti,tps65090-charger", },
+	{ /* end */ }
+};
+
+static struct platform_driver tps65090_charger_driver = {
+	.driver	= {
+		.name	= "tps65090-charger",
+		.of_match_table = of_tps65090_charger_match,
+		.owner	= THIS_MODULE,
+	},
+	.probe	= tps65090_charger_probe,
+	.remove = tps65090_charger_remove,
+};
+module_platform_driver(tps65090_charger_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Syed Rafiuddin <srafiuddin@nvidia.com>");
+MODULE_DESCRIPTION("tps65090 battery charger driver");
diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c
index a69d0d11b540..bed458172dd2 100644
--- a/drivers/power/twl4030_charger.c
+++ b/drivers/power/twl4030_charger.c
@@ -636,17 +636,7 @@ static struct platform_driver twl4030_bci_driver = {
 	.remove	= __exit_p(twl4030_bci_remove),
 };
 
-static int __init twl4030_bci_init(void)
-{
-	return platform_driver_probe(&twl4030_bci_driver, twl4030_bci_probe);
-}
-module_init(twl4030_bci_init);
-
-static void __exit twl4030_bci_exit(void)
-{
-	platform_driver_unregister(&twl4030_bci_driver);
-}
-module_exit(twl4030_bci_exit);
+module_platform_driver_probe(twl4030_bci_driver, twl4030_bci_probe);
 
 MODULE_AUTHOR("Gražvydas Ignotas");
 MODULE_DESCRIPTION("TWL4030 Battery Charger Interface driver");
diff --git a/drivers/power/wm831x_backup.c b/drivers/power/wm831x_backup.c
index d9cc169f1424..58cbb009b74f 100644
--- a/drivers/power/wm831x_backup.c
+++ b/drivers/power/wm831x_backup.c
@@ -169,7 +169,8 @@ static int wm831x_backup_probe(struct platform_device *pdev)
 	struct power_supply *backup;
 	int ret;
 
-	devdata = kzalloc(sizeof(struct wm831x_backup), GFP_KERNEL);
+	devdata = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_backup),
+				GFP_KERNEL);
 	if (devdata == NULL)
 		return -ENOMEM;
 
@@ -197,14 +198,8 @@ static int wm831x_backup_probe(struct platform_device *pdev)
 	backup->num_properties = ARRAY_SIZE(wm831x_backup_props);
 	backup->get_property = wm831x_backup_get_prop;
 	ret = power_supply_register(&pdev->dev, backup);
-	if (ret)
-		goto err_kmalloc;
 
 	return ret;
-
-err_kmalloc:
-	kfree(devdata);
-	return ret;
 }
 
 static int wm831x_backup_remove(struct platform_device *pdev)
@@ -213,7 +208,6 @@ static int wm831x_backup_remove(struct platform_device *pdev)
 
 	power_supply_unregister(&devdata->backup);
 	kfree(devdata->backup.name);
-	kfree(devdata);
 
 	return 0;
 }