power: move power supply drivers to power/supply

This moves all power supply drivers from drivers/power/
to drivers/power/supply/. The intention is a cleaner
source tree, since drivers/power/ also contains frameworks
unrelated to power supply, like adaptive voltage scaling.

Signed-off-by: Sebastian Reichel <sre@kernel.org>

1 files changed, 0 insertions, 1212 deletions

diff --git a/drivers/power/ab8500_btemp.c b/drivers/power/ab8500_btemp.c
deleted file mode 100644
index bf2e5dd301e7..000000000000
--- a/drivers/power/ab8500_btemp.c
+++ /dev/null
@@ -1,1212 +0,0 @@
-/*
- * Copyright (C) ST-Ericsson SA 2012
- *
- * Battery temperature driver for AB8500
- *
- * License Terms: GNU General Public License v2
- * Author:
- *	Johan Palsson <johan.palsson@stericsson.com>
- *	Karl Komierowski <karl.komierowski@stericsson.com>
- *	Arun R Murthy <arun.murthy@stericsson.com>
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-#include <linux/power_supply.h>
-#include <linux/completion.h>
-#include <linux/workqueue.h>
-#include <linux/jiffies.h>
-#include <linux/of.h>
-#include <linux/mfd/core.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>
-
-#define VTVOUT_V			1800
-
-#define BTEMP_THERMAL_LOW_LIMIT		-10
-#define BTEMP_THERMAL_MED_LIMIT		0
-#define BTEMP_THERMAL_HIGH_LIMIT_52	52
-#define BTEMP_THERMAL_HIGH_LIMIT_57	57
-#define BTEMP_THERMAL_HIGH_LIMIT_62	62
-
-#define BTEMP_BATCTRL_CURR_SRC_7UA	7
-#define BTEMP_BATCTRL_CURR_SRC_20UA	20
-
-#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
-
-/**
- * struct ab8500_btemp_interrupts - ab8500 interrupts
- * @name:	name of the interrupt
- * @isr		function pointer to the isr
- */
-struct ab8500_btemp_interrupts {
-	char *name;
-	irqreturn_t (*isr)(int irq, void *data);
-};
-
-struct ab8500_btemp_events {
-	bool batt_rem;
-	bool btemp_high;
-	bool btemp_medhigh;
-	bool btemp_lowmed;
-	bool btemp_low;
-	bool ac_conn;
-	bool usb_conn;
-};
-
-struct ab8500_btemp_ranges {
-	int btemp_high_limit;
-	int btemp_med_limit;
-	int btemp_low_limit;
-};
-
-/**
- * struct ab8500_btemp - ab8500 BTEMP device information
- * @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:		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
- * @bm:           	Platform specific battery management information
- * @btemp_psy:		Structure for BTEMP specific battery properties
- * @events:		Structure for information about events triggered
- * @btemp_ranges:	Battery temperature range structure
- * @btemp_wq:		Work queue for measuring the temperature periodically
- * @btemp_periodic_work:	Work for measuring the temperature periodically
- * @initialized:	True if battery id read.
- */
-struct ab8500_btemp {
-	struct device *dev;
-	struct list_head node;
-	int curr_source;
-	int bat_temp;
-	int prev_bat_temp;
-	struct ab8500 *parent;
-	struct ab8500_gpadc *gpadc;
-	struct ab8500_fg *fg;
-	struct abx500_bm_data *bm;
-	struct power_supply *btemp_psy;
-	struct ab8500_btemp_events events;
-	struct ab8500_btemp_ranges btemp_ranges;
-	struct workqueue_struct *btemp_wq;
-	struct delayed_work btemp_periodic_work;
-	bool initialized;
-};
-
-/* BTEMP power supply properties */
-static enum power_supply_property ab8500_btemp_props[] = {
-	POWER_SUPPLY_PROP_PRESENT,
-	POWER_SUPPLY_PROP_ONLINE,
-	POWER_SUPPLY_PROP_TECHNOLOGY,
-	POWER_SUPPLY_PROP_TEMP,
-};
-
-static LIST_HEAD(ab8500_btemp_list);
-
-/**
- * ab8500_btemp_get() - returns a reference to the primary AB8500 BTEMP
- * (i.e. the first BTEMP in the instance list)
- */
-struct ab8500_btemp *ab8500_btemp_get(void)
-{
-	struct ab8500_btemp *btemp;
-	btemp = list_first_entry(&ab8500_btemp_list, struct ab8500_btemp, node);
-
-	return btemp;
-}
-EXPORT_SYMBOL(ab8500_btemp_get);
-
-/**
- * ab8500_btemp_batctrl_volt_to_res() - convert batctrl voltage to resistance
- * @di:		pointer to the ab8500_btemp structure
- * @v_batctrl:	measured batctrl voltage
- * @inst_curr:	measured instant current
- *
- * This function returns the battery resistance that is
- * derived from the BATCTRL voltage.
- * Returns value in Ohms.
- */
-static int ab8500_btemp_batctrl_volt_to_res(struct ab8500_btemp *di,
-	int v_batctrl, int inst_curr)
-{
-	int rbs;
-
-	if (is_ab8500_1p1_or_earlier(di->parent)) {
-		/*
-		 * For ABB cut1.0 and 1.1 BAT_CTRL is internally
-		 * connected to 1.8V through a 450k resistor
-		 */
-		return (450000 * (v_batctrl)) / (1800 - v_batctrl);
-	}
-
-	if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL) {
-		/*
-		 * If the battery has internal NTC, we use the current
-		 * source to calculate the resistance.
-		 */
-		rbs = (v_batctrl * 1000
-		       - di->bm->gnd_lift_resistance * inst_curr)
-		      / di->curr_source;
-	} else {
-		/*
-		 * BAT_CTRL is internally
-		 * connected to 1.8V through a 80k resistor
-		 */
-		rbs = (80000 * (v_batctrl)) / (1800 - v_batctrl);
-	}
-
-	return rbs;
-}
-
-/**
- * ab8500_btemp_read_batctrl_voltage() - measure batctrl voltage
- * @di:		pointer to the ab8500_btemp structure
- *
- * This function returns the voltage on BATCTRL. Returns value in mV.
- */
-static int ab8500_btemp_read_batctrl_voltage(struct ab8500_btemp *di)
-{
-	int vbtemp;
-	static int prev;
-
-	vbtemp = ab8500_gpadc_convert(di->gpadc, BAT_CTRL);
-	if (vbtemp < 0) {
-		dev_err(di->dev,
-			"%s gpadc conversion failed, using previous value",
-			__func__);
-		return prev;
-	}
-	prev = vbtemp;
-	return vbtemp;
-}
-
-/**
- * ab8500_btemp_curr_source_enable() - enable/disable batctrl current source
- * @di:		pointer to the ab8500_btemp structure
- * @enable:	enable or disable the current source
- *
- * Enable or disable the current sources for the BatCtrl AD channel
- */
-static int ab8500_btemp_curr_source_enable(struct ab8500_btemp *di,
-	bool enable)
-{
-	int curr;
-	int ret = 0;
-
-	/*
-	 * BATCTRL current sources are included on AB8500 cut2.0
-	 * and future versions
-	 */
-	if (is_ab8500_1p1_or_earlier(di->parent))
-		return 0;
-
-	/* Only do this for batteries with internal NTC */
-	if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && enable) {
-
-		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
-				curr = BAT_CTRL_18U_ENA;
-		} else {
-			if (di->curr_source == BTEMP_BATCTRL_CURR_SRC_7UA)
-				curr = BAT_CTRL_7U_ENA;
-			else
-				curr = BAT_CTRL_20U_ENA;
-		}
-
-		dev_dbg(di->dev, "Set BATCTRL %duA\n", di->curr_source);
-
-		ret = abx500_mask_and_set_register_interruptible(di->dev,
-			AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
-			FORCE_BAT_CTRL_CMP_HIGH, FORCE_BAT_CTRL_CMP_HIGH);
-		if (ret) {
-			dev_err(di->dev, "%s failed setting cmp_force\n",
-				__func__);
-			return ret;
-		}
-
-		/*
-		 * We have to wait one 32kHz cycle before enabling
-		 * the current source, since ForceBatCtrlCmpHigh needs
-		 * to be written in a separate cycle
-		 */
-		udelay(32);
-
-		ret = abx500_set_register_interruptible(di->dev,
-			AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
-			FORCE_BAT_CTRL_CMP_HIGH | curr);
-		if (ret) {
-			dev_err(di->dev, "%s failed enabling current source\n",
-				__func__);
-			goto disable_curr_source;
-		}
-	} else if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && !enable) {
-		dev_dbg(di->dev, "Disable BATCTRL curr source\n");
-
-		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,
-				BAT_CTRL_16U_ENA | BAT_CTRL_18U_ENA,
-				~(BAT_CTRL_16U_ENA | BAT_CTRL_18U_ENA));
-		} else {
-			/* Write 0 to the curr bits */
-			ret = abx500_mask_and_set_register_interruptible(
-				di->dev,
-				AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
-				BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA,
-				~(BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA));
-		}
-
-		if (ret) {
-			dev_err(di->dev, "%s failed disabling current source\n",
-				__func__);
-			goto disable_curr_source;
-		}
-
-		/* Enable Pull-Up and comparator */
-		ret = abx500_mask_and_set_register_interruptible(di->dev,
-			AB8500_CHARGER,	AB8500_BAT_CTRL_CURRENT_SOURCE,
-			BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA,
-			BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA);
-		if (ret) {
-			dev_err(di->dev, "%s failed enabling PU and comp\n",
-				__func__);
-			goto enable_pu_comp;
-		}
-
-		/*
-		 * We have to wait one 32kHz cycle before disabling
-		 * ForceBatCtrlCmpHigh since this needs to be written
-		 * in a separate cycle
-		 */
-		udelay(32);
-
-		/* Disable 'force comparator' */
-		ret = abx500_mask_and_set_register_interruptible(di->dev,
-			AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
-			FORCE_BAT_CTRL_CMP_HIGH, ~FORCE_BAT_CTRL_CMP_HIGH);
-		if (ret) {
-			dev_err(di->dev, "%s failed disabling force comp\n",
-				__func__);
-			goto disable_force_comp;
-		}
-	}
-	return ret;
-
-	/*
-	 * We have to try unsetting FORCE_BAT_CTRL_CMP_HIGH one more time
-	 * if we got an error above
-	 */
-disable_curr_source:
-	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,
-			BAT_CTRL_16U_ENA | BAT_CTRL_18U_ENA,
-			~(BAT_CTRL_16U_ENA | BAT_CTRL_18U_ENA));
-	} else {
-		/* Write 0 to the curr bits */
-		ret = abx500_mask_and_set_register_interruptible(di->dev,
-			AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
-			BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA,
-			~(BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA));
-	}
-
-	if (ret) {
-		dev_err(di->dev, "%s failed disabling current source\n",
-			__func__);
-		return ret;
-	}
-enable_pu_comp:
-	/* Enable Pull-Up and comparator */
-	ret = abx500_mask_and_set_register_interruptible(di->dev,
-		AB8500_CHARGER,	AB8500_BAT_CTRL_CURRENT_SOURCE,
-		BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA,
-		BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA);
-	if (ret) {
-		dev_err(di->dev, "%s failed enabling PU and comp\n",
-			__func__);
-		return ret;
-	}
-
-disable_force_comp:
-	/*
-	 * We have to wait one 32kHz cycle before disabling
-	 * ForceBatCtrlCmpHigh since this needs to be written
-	 * in a separate cycle
-	 */
-	udelay(32);
-
-	/* Disable 'force comparator' */
-	ret = abx500_mask_and_set_register_interruptible(di->dev,
-		AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE,
-		FORCE_BAT_CTRL_CMP_HIGH, ~FORCE_BAT_CTRL_CMP_HIGH);
-	if (ret) {
-		dev_err(di->dev, "%s failed disabling force comp\n",
-			__func__);
-		return ret;
-	}
-
-	return ret;
-}
-
-/**
- * ab8500_btemp_get_batctrl_res() - get battery resistance
- * @di:		pointer to the ab8500_btemp structure
- *
- * This function returns the battery pack identification resistance.
- * Returns value in Ohms.
- */
-static int ab8500_btemp_get_batctrl_res(struct ab8500_btemp *di)
-{
-	int ret;
-	int batctrl = 0;
-	int res;
-	int inst_curr;
-	int i;
-
-	/*
-	 * BATCTRL current sources are included on AB8500 cut2.0
-	 * and future versions
-	 */
-	ret = ab8500_btemp_curr_source_enable(di, true);
-	if (ret) {
-		dev_err(di->dev, "%s curr source enabled failed\n", __func__);
-		return ret;
-	}
-
-	if (!di->fg)
-		di->fg = ab8500_fg_get();
-	if (!di->fg) {
-		dev_err(di->dev, "No fg found\n");
-		return -EINVAL;
-	}
-
-	ret = ab8500_fg_inst_curr_start(di->fg);
-
-	if (ret) {
-		dev_err(di->dev, "Failed to start current measurement\n");
-		return ret;
-	}
-
-	do {
-		msleep(20);
-	} while (!ab8500_fg_inst_curr_started(di->fg));
-
-	i = 0;
-
-	do {
-		batctrl += ab8500_btemp_read_batctrl_voltage(di);
-		i++;
-		msleep(20);
-	} while (!ab8500_fg_inst_curr_done(di->fg));
-	batctrl /= i;
-
-	ret = ab8500_fg_inst_curr_finalize(di->fg, &inst_curr);
-	if (ret) {
-		dev_err(di->dev, "Failed to finalize current measurement\n");
-		return ret;
-	}
-
-	res = ab8500_btemp_batctrl_volt_to_res(di, batctrl, inst_curr);
-
-	ret = ab8500_btemp_curr_source_enable(di, false);
-	if (ret) {
-		dev_err(di->dev, "%s curr source disable failed\n", __func__);
-		return ret;
-	}
-
-	dev_dbg(di->dev, "%s batctrl: %d res: %d inst_curr: %d samples: %d\n",
-		__func__, batctrl, res, inst_curr, i);
-
-	return res;
-}
-
-/**
- * ab8500_btemp_res_to_temp() - resistance to temperature
- * @di:		pointer to the ab8500_btemp structure
- * @tbl:	pointer to the resiatance to temperature table
- * @tbl_size:	size of the resistance to temperature table
- * @res:	resistance to calculate the temperature from
- *
- * This function returns the battery temperature in degrees Celcius
- * based on the NTC resistance.
- */
-static int ab8500_btemp_res_to_temp(struct ab8500_btemp *di,
-	const struct abx500_res_to_temp *tbl, int tbl_size, int res)
-{
-	int i, temp;
-	/*
-	 * Calculate the formula for the straight line
-	 * Simple interpolation if we are within
-	 * the resistance table limits, extrapolate
-	 * if resistance is outside the limits.
-	 */
-	if (res > tbl[0].resist)
-		i = 0;
-	else if (res <= tbl[tbl_size - 1].resist)
-		i = tbl_size - 2;
-	else {
-		i = 0;
-		while (!(res <= tbl[i].resist &&
-			res > tbl[i + 1].resist))
-			i++;
-	}
-
-	temp = tbl[i].temp + ((tbl[i + 1].temp - tbl[i].temp) *
-		(res - tbl[i].resist)) / (tbl[i + 1].resist - tbl[i].resist);
-	return temp;
-}
-
-/**
- * ab8500_btemp_measure_temp() - measure battery temperature
- * @di:		pointer to the ab8500_btemp structure
- *
- * Returns battery temperature (on success) else the previous temperature
- */
-static int ab8500_btemp_measure_temp(struct ab8500_btemp *di)
-{
-	int temp;
-	static int prev;
-	int rbat, rntc, vntc;
-	u8 id;
-
-	id = di->bm->batt_id;
-
-	if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL &&
-			id != BATTERY_UNKNOWN) {
-
-		rbat = ab8500_btemp_get_batctrl_res(di);
-		if (rbat < 0) {
-			dev_err(di->dev, "%s get batctrl res failed\n",
-				__func__);
-			/*
-			 * Return out-of-range temperature so that
-			 * charging is stopped
-			 */
-			return BTEMP_THERMAL_LOW_LIMIT;
-		}
-
-		temp = ab8500_btemp_res_to_temp(di,
-			di->bm->bat_type[id].r_to_t_tbl,
-			di->bm->bat_type[id].n_temp_tbl_elements, rbat);
-	} else {
-		vntc = ab8500_gpadc_convert(di->gpadc, BTEMP_BALL);
-		if (vntc < 0) {
-			dev_err(di->dev,
-				"%s gpadc conversion failed,"
-				" using previous value\n", __func__);
-			return prev;
-		}
-		/*
-		 * The PCB NTC is sourced from VTVOUT via a 230kOhm
-		 * resistor.
-		 */
-		rntc = 230000 * vntc / (VTVOUT_V - vntc);
-
-		temp = ab8500_btemp_res_to_temp(di,
-			di->bm->bat_type[id].r_to_t_tbl,
-			di->bm->bat_type[id].n_temp_tbl_elements, rntc);
-		prev = temp;
-	}
-	dev_dbg(di->dev, "Battery temperature is %d\n", temp);
-	return temp;
-}
-
-/**
- * ab8500_btemp_id() - Identify the connected battery
- * @di:		pointer to the ab8500_btemp structure
- *
- * This function will try to identify the battery by reading the ID
- * resistor. Some brands use a combined ID resistor with a NTC resistor to
- * both be able to identify and to read the temperature of it.
- */
-static int ab8500_btemp_id(struct ab8500_btemp *di)
-{
-	int res;
-	u8 i;
-	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;
-
-	di->bm->batt_id = BATTERY_UNKNOWN;
-
-	res =  ab8500_btemp_get_batctrl_res(di);
-	if (res < 0) {
-		dev_err(di->dev, "%s get batctrl res failed\n", __func__);
-		return -ENXIO;
-	}
-
-	/* BATTERY_UNKNOWN is defined on position 0, skip it! */
-	for (i = BATTERY_UNKNOWN + 1; i < di->bm->n_btypes; i++) {
-		if ((res <= di->bm->bat_type[i].resis_high) &&
-			(res >= di->bm->bat_type[i].resis_low)) {
-			dev_dbg(di->dev, "Battery detected on %s"
-				" low %d < res %d < high: %d"
-				" index: %d\n",
-				di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL ?
-				"BATCTRL" : "BATTEMP",
-				di->bm->bat_type[i].resis_low, res,
-				di->bm->bat_type[i].resis_high, i);
-
-			di->bm->batt_id = i;
-			break;
-		}
-	}
-
-	if (di->bm->batt_id == BATTERY_UNKNOWN) {
-		dev_warn(di->dev, "Battery identified as unknown"
-			", resistance %d Ohm\n", res);
-		return -ENXIO;
-	}
-
-	/*
-	 * We only have to change current source if the
-	 * detected type is Type 1.
-	 */
-	if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL &&
-	    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");
-			di->curr_source = BTEMP_BATCTRL_CURR_SRC_20UA;
-		}
-	}
-
-	return di->bm->batt_id;
-}
-
-/**
- * ab8500_btemp_periodic_work() - Measuring the temperature periodically
- * @work:	pointer to the work_struct structure
- *
- * Work function for measuring the temperature periodically
- */
-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) {
-		/* Identify the battery */
-		if (ab8500_btemp_id(di) < 0)
-			dev_warn(di->dev, "failed to identify the battery\n");
-	}
-
-	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;
-	else
-		interval = di->bm->temp_interval_nochg;
-
-	/* Schedule a new measurement */
-	queue_delayed_work(di->btemp_wq,
-		&di->btemp_periodic_work,
-		round_jiffies(interval * HZ));
-}
-
-/**
- * ab8500_btemp_batctrlindb_handler() - battery removal detected
- * @irq:       interrupt number
- * @_di:       void pointer that has to address of ab8500_btemp
- *
- * Returns IRQ status(IRQ_HANDLED)
- */
-static irqreturn_t ab8500_btemp_batctrlindb_handler(int irq, void *_di)
-{
-	struct ab8500_btemp *di = _di;
-	dev_err(di->dev, "Battery removal detected!\n");
-
-	di->events.batt_rem = true;
-	power_supply_changed(di->btemp_psy);
-
-	return IRQ_HANDLED;
-}
-
-/**
- * ab8500_btemp_templow_handler() - battery temp lower than 10 degrees
- * @irq:       interrupt number
- * @_di:       void pointer that has to address of ab8500_btemp
- *
- * Returns IRQ status(IRQ_HANDLED)
- */
-static irqreturn_t ab8500_btemp_templow_handler(int irq, void *_di)
-{
-	struct ab8500_btemp *di = _di;
-
-	if (is_ab8500_3p3_or_earlier(di->parent)) {
-		dev_dbg(di->dev, "Ignore false btemp low irq"
-			" for ABB cut 1.0, 1.1, 2.0 and 3.3\n");
-	} else {
-		dev_crit(di->dev, "Battery temperature lower than -10deg c\n");
-
-		di->events.btemp_low = true;
-		di->events.btemp_high = false;
-		di->events.btemp_medhigh = false;
-		di->events.btemp_lowmed = false;
-		power_supply_changed(di->btemp_psy);
-	}
-
-	return IRQ_HANDLED;
-}
-
-/**
- * ab8500_btemp_temphigh_handler() - battery temp higher than max temp
- * @irq:       interrupt number
- * @_di:       void pointer that has to address of ab8500_btemp
- *
- * Returns IRQ status(IRQ_HANDLED)
- */
-static irqreturn_t ab8500_btemp_temphigh_handler(int irq, void *_di)
-{
-	struct ab8500_btemp *di = _di;
-
-	dev_crit(di->dev, "Battery temperature is higher than MAX temp\n");
-
-	di->events.btemp_high = true;
-	di->events.btemp_medhigh = false;
-	di->events.btemp_lowmed = false;
-	di->events.btemp_low = false;
-	power_supply_changed(di->btemp_psy);
-
-	return IRQ_HANDLED;
-}
-
-/**
- * ab8500_btemp_lowmed_handler() - battery temp between low and medium
- * @irq:       interrupt number
- * @_di:       void pointer that has to address of ab8500_btemp
- *
- * Returns IRQ status(IRQ_HANDLED)
- */
-static irqreturn_t ab8500_btemp_lowmed_handler(int irq, void *_di)
-{
-	struct ab8500_btemp *di = _di;
-
-	dev_dbg(di->dev, "Battery temperature is between low and medium\n");
-
-	di->events.btemp_lowmed = true;
-	di->events.btemp_medhigh = false;
-	di->events.btemp_high = false;
-	di->events.btemp_low = false;
-	power_supply_changed(di->btemp_psy);
-
-	return IRQ_HANDLED;
-}
-
-/**
- * ab8500_btemp_medhigh_handler() - battery temp between medium and high
- * @irq:       interrupt number
- * @_di:       void pointer that has to address of ab8500_btemp
- *
- * Returns IRQ status(IRQ_HANDLED)
- */
-static irqreturn_t ab8500_btemp_medhigh_handler(int irq, void *_di)
-{
-	struct ab8500_btemp *di = _di;
-
-	dev_dbg(di->dev, "Battery temperature is between medium and high\n");
-
-	di->events.btemp_medhigh = true;
-	di->events.btemp_lowmed = false;
-	di->events.btemp_high = false;
-	di->events.btemp_low = false;
-	power_supply_changed(di->btemp_psy);
-
-	return IRQ_HANDLED;
-}
-
-/**
- * ab8500_btemp_periodic() - Periodic temperature measurements
- * @di:		pointer to the ab8500_btemp structure
- * @enable:	enable or disable periodic temperature measurements
- *
- * Starts of stops periodic temperature measurements. Periodic measurements
- * should only be done when a charger is connected.
- */
-static void ab8500_btemp_periodic(struct ab8500_btemp *di,
-	bool enable)
-{
-	dev_dbg(di->dev, "Enable periodic temperature measurements: %d\n",
-		enable);
-	/*
-	 * Make sure a new measurement is done directly by cancelling
-	 * any pending work
-	 */
-	cancel_delayed_work_sync(&di->btemp_periodic_work);
-
-	if (enable)
-		queue_delayed_work(di->btemp_wq, &di->btemp_periodic_work, 0);
-}
-
-/**
- * ab8500_btemp_get_temp() - get battery temperature
- * @di:		pointer to the ab8500_btemp structure
- *
- * Returns battery temperature
- */
-int ab8500_btemp_get_temp(struct ab8500_btemp *di)
-{
-	int temp = 0;
-
-	/*
-	 * The BTEMP events are not reliabe on AB8500 cut3.3
-	 * and prior versions
-	 */
-	if (is_ab8500_3p3_or_earlier(di->parent)) {
-		temp = di->bat_temp * 10;
-	} else {
-		if (di->events.btemp_low) {
-			if (temp > di->btemp_ranges.btemp_low_limit)
-				temp = di->btemp_ranges.btemp_low_limit * 10;
-			else
-				temp = di->bat_temp * 10;
-		} else if (di->events.btemp_high) {
-			if (temp < di->btemp_ranges.btemp_high_limit)
-				temp = di->btemp_ranges.btemp_high_limit * 10;
-			else
-				temp = di->bat_temp * 10;
-		} else if (di->events.btemp_lowmed) {
-			if (temp > di->btemp_ranges.btemp_med_limit)
-				temp = di->btemp_ranges.btemp_med_limit * 10;
-			else
-				temp = di->bat_temp * 10;
-		} else if (di->events.btemp_medhigh) {
-			if (temp < di->btemp_ranges.btemp_med_limit)
-				temp = di->btemp_ranges.btemp_med_limit * 10;
-			else
-				temp = di->bat_temp * 10;
-		} else
-			temp = di->bat_temp * 10;
-	}
-	return temp;
-}
-EXPORT_SYMBOL(ab8500_btemp_get_temp);
-
-/**
- * ab8500_btemp_get_batctrl_temp() - get the temperature
- * @btemp:      pointer to the btemp structure
- *
- * Returns the batctrl temperature in millidegrees
- */
-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
- * @psy:        pointer to the power_supply structure
- * @psp:        pointer to the power_supply_property structure
- * @val:        pointer to the power_supply_propval union
- *
- * This function gets called when an application tries to get the btemp
- * properties by reading the sysfs files.
- * online:	presence of the battery
- * present:	presence of the battery
- * technology:	battery technology
- * temp:	battery temperature
- * Returns error code in case of failure else 0(on success)
- */
-static int ab8500_btemp_get_property(struct power_supply *psy,
-	enum power_supply_property psp,
-	union power_supply_propval *val)
-{
-	struct ab8500_btemp *di = power_supply_get_drvdata(psy);
-
-	switch (psp) {
-	case POWER_SUPPLY_PROP_PRESENT:
-	case POWER_SUPPLY_PROP_ONLINE:
-		if (di->events.batt_rem)
-			val->intval = 0;
-		else
-			val->intval = 1;
-		break;
-	case POWER_SUPPLY_PROP_TECHNOLOGY:
-		val->intval = di->bm->bat_type[di->bm->batt_id].name;
-		break;
-	case POWER_SUPPLY_PROP_TEMP:
-		val->intval = ab8500_btemp_get_temp(di);
-		break;
-	default:
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static int ab8500_btemp_get_ext_psy_data(struct device *dev, void *data)
-{
-	struct power_supply *psy;
-	struct power_supply *ext = dev_get_drvdata(dev);
-	const char **supplicants = (const char **)ext->supplied_to;
-	struct ab8500_btemp *di;
-	union power_supply_propval ret;
-	int j;
-
-	psy = (struct power_supply *)data;
-	di = power_supply_get_drvdata(psy);
-
-	/*
-	 * For all psy where the name of your driver
-	 * appears in any supplied_to
-	 */
-	j = match_string(supplicants, ext->num_supplicants, psy->desc->name);
-	if (j < 0)
-		return 0;
-
-	/* Go through all properties for the psy */
-	for (j = 0; j < ext->desc->num_properties; j++) {
-		enum power_supply_property prop;
-		prop = ext->desc->properties[j];
-
-		if (power_supply_get_property(ext, prop, &ret))
-			continue;
-
-		switch (prop) {
-		case POWER_SUPPLY_PROP_PRESENT:
-			switch (ext->desc->type) {
-			case POWER_SUPPLY_TYPE_MAINS:
-				/* AC disconnected */
-				if (!ret.intval && di->events.ac_conn) {
-					di->events.ac_conn = false;
-				}
-				/* AC connected */
-				else if (ret.intval && !di->events.ac_conn) {
-					di->events.ac_conn = true;
-					if (!di->events.usb_conn)
-						ab8500_btemp_periodic(di, true);
-				}
-				break;
-			case POWER_SUPPLY_TYPE_USB:
-				/* USB disconnected */
-				if (!ret.intval && di->events.usb_conn) {
-					di->events.usb_conn = false;
-				}
-				/* USB connected */
-				else if (ret.intval && !di->events.usb_conn) {
-					di->events.usb_conn = true;
-					if (!di->events.ac_conn)
-						ab8500_btemp_periodic(di, true);
-				}
-				break;
-			default:
-				break;
-			}
-			break;
-		default:
-			break;
-		}
-	}
-	return 0;
-}
-
-/**
- * ab8500_btemp_external_power_changed() - callback for power supply changes
- * @psy:       pointer to the structure power_supply
- *
- * This function is pointing to the function pointer external_power_changed
- * of the structure power_supply.
- * This function gets executed when there is a change in the external power
- * supply to the btemp.
- */
-static void ab8500_btemp_external_power_changed(struct power_supply *psy)
-{
-	struct ab8500_btemp *di = power_supply_get_drvdata(psy);
-
-	class_for_each_device(power_supply_class, NULL,
-		di->btemp_psy, ab8500_btemp_get_ext_psy_data);
-}
-
-/* ab8500 btemp driver interrupts and their respective isr */
-static struct ab8500_btemp_interrupts ab8500_btemp_irq[] = {
-	{"BAT_CTRL_INDB", ab8500_btemp_batctrlindb_handler},
-	{"BTEMP_LOW", ab8500_btemp_templow_handler},
-	{"BTEMP_HIGH", ab8500_btemp_temphigh_handler},
-	{"BTEMP_LOW_MEDIUM", ab8500_btemp_lowmed_handler},
-	{"BTEMP_MEDIUM_HIGH", ab8500_btemp_medhigh_handler},
-};
-
-#if defined(CONFIG_PM)
-static int ab8500_btemp_resume(struct platform_device *pdev)
-{
-	struct ab8500_btemp *di = platform_get_drvdata(pdev);
-
-	ab8500_btemp_periodic(di, true);
-
-	return 0;
-}
-
-static int ab8500_btemp_suspend(struct platform_device *pdev,
-	pm_message_t state)
-{
-	struct ab8500_btemp *di = platform_get_drvdata(pdev);
-
-	ab8500_btemp_periodic(di, false);
-
-	return 0;
-}
-#else
-#define ab8500_btemp_suspend      NULL
-#define ab8500_btemp_resume       NULL
-#endif
-
-static int ab8500_btemp_remove(struct platform_device *pdev)
-{
-	struct ab8500_btemp *di = platform_get_drvdata(pdev);
-	int i, irq;
-
-	/* Disable interrupts */
-	for (i = 0; i < ARRAY_SIZE(ab8500_btemp_irq); i++) {
-		irq = platform_get_irq_byname(pdev, ab8500_btemp_irq[i].name);
-		free_irq(irq, di);
-	}
-
-	/* Delete the work queue */
-	destroy_workqueue(di->btemp_wq);
-
-	flush_scheduled_work();
-	power_supply_unregister(di->btemp_psy);
-
-	return 0;
-}
-
-static char *supply_interface[] = {
-	"ab8500_chargalg",
-	"ab8500_fg",
-};
-
-static const struct power_supply_desc ab8500_btemp_desc = {
-	.name			= "ab8500_btemp",
-	.type			= POWER_SUPPLY_TYPE_BATTERY,
-	.properties		= ab8500_btemp_props,
-	.num_properties		= ARRAY_SIZE(ab8500_btemp_props),
-	.get_property		= ab8500_btemp_get_property,
-	.external_power_changed	= ab8500_btemp_external_power_changed,
-};
-
-static int ab8500_btemp_probe(struct platform_device *pdev)
-{
-	struct device_node *np = pdev->dev.of_node;
-	struct abx500_bm_data *plat = pdev->dev.platform_data;
-	struct power_supply_config psy_cfg = {};
-	struct ab8500_btemp *di;
-	int irq, i, ret = 0;
-	u8 val;
-
-	di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
-	if (!di) {
-		dev_err(&pdev->dev, "%s no mem for ab8500_btemp\n", __func__);
-		return -ENOMEM;
-	}
-
-	if (!plat) {
-		dev_err(&pdev->dev, "no battery management data supplied\n");
-		return -EINVAL;
-	}
-	di->bm = plat;
-
-	if (np) {
-		ret = ab8500_bm_of_probe(&pdev->dev, np, di->bm);
-		if (ret) {
-			dev_err(&pdev->dev, "failed to get battery information\n");
-			return ret;
-		}
-	}
-
-	/* get parent data */
-	di->dev = &pdev->dev;
-	di->parent = dev_get_drvdata(pdev->dev.parent);
-	di->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
-
-	di->initialized = false;
-
-	psy_cfg.supplied_to = supply_interface;
-	psy_cfg.num_supplicants = ARRAY_SIZE(supply_interface);
-	psy_cfg.drv_data = di;
-
-	/* Create a work queue for the btemp */
-	di->btemp_wq =
-		create_singlethread_workqueue("ab8500_btemp_wq");
-	if (di->btemp_wq == NULL) {
-		dev_err(di->dev, "failed to create work queue\n");
-		return -ENOMEM;
-	}
-
-	/* Init work for measuring temperature periodically */
-	INIT_DEFERRABLE_WORK(&di->btemp_periodic_work,
-		ab8500_btemp_periodic_work);
-
-	/* Set BTEMP thermal limits. Low and Med are fixed */
-	di->btemp_ranges.btemp_low_limit = BTEMP_THERMAL_LOW_LIMIT;
-	di->btemp_ranges.btemp_med_limit = BTEMP_THERMAL_MED_LIMIT;
-
-	ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
-		AB8500_BTEMP_HIGH_TH, &val);
-	if (ret < 0) {
-		dev_err(di->dev, "%s ab8500 read failed\n", __func__);
-		goto free_btemp_wq;
-	}
-	switch (val) {
-	case BTEMP_HIGH_TH_57_0:
-	case BTEMP_HIGH_TH_57_1:
-		di->btemp_ranges.btemp_high_limit =
-			BTEMP_THERMAL_HIGH_LIMIT_57;
-		break;
-	case BTEMP_HIGH_TH_52:
-		di->btemp_ranges.btemp_high_limit =
-			BTEMP_THERMAL_HIGH_LIMIT_52;
-		break;
-	case BTEMP_HIGH_TH_62:
-		di->btemp_ranges.btemp_high_limit =
-			BTEMP_THERMAL_HIGH_LIMIT_62;
-		break;
-	}
-
-	/* Register BTEMP power supply class */
-	di->btemp_psy = power_supply_register(di->dev, &ab8500_btemp_desc,
-					      &psy_cfg);
-	if (IS_ERR(di->btemp_psy)) {
-		dev_err(di->dev, "failed to register BTEMP psy\n");
-		ret = PTR_ERR(di->btemp_psy);
-		goto free_btemp_wq;
-	}
-
-	/* Register interrupts */
-	for (i = 0; i < ARRAY_SIZE(ab8500_btemp_irq); i++) {
-		irq = platform_get_irq_byname(pdev, ab8500_btemp_irq[i].name);
-		ret = request_threaded_irq(irq, NULL, ab8500_btemp_irq[i].isr,
-			IRQF_SHARED | IRQF_NO_SUSPEND,
-			ab8500_btemp_irq[i].name, di);
-
-		if (ret) {
-			dev_err(di->dev, "failed to request %s IRQ %d: %d\n"
-				, ab8500_btemp_irq[i].name, irq, ret);
-			goto free_irq;
-		}
-		dev_dbg(di->dev, "Requested %s IRQ %d: %d\n",
-			ab8500_btemp_irq[i].name, irq, ret);
-	}
-
-	platform_set_drvdata(pdev, di);
-
-	/* Kick off periodic temperature measurements */
-	ab8500_btemp_periodic(di, true);
-	list_add_tail(&di->node, &ab8500_btemp_list);
-
-	return ret;
-
-free_irq:
-	power_supply_unregister(di->btemp_psy);
-
-	/* We also have to free all successfully registered irqs */
-	for (i = i - 1; i >= 0; i--) {
-		irq = platform_get_irq_byname(pdev, ab8500_btemp_irq[i].name);
-		free_irq(irq, di);
-	}
-free_btemp_wq:
-	destroy_workqueue(di->btemp_wq);
-	return ret;
-}
-
-static const struct of_device_id ab8500_btemp_match[] = {
-	{ .compatible = "stericsson,ab8500-btemp", },
-	{ },
-};
-
-static struct platform_driver ab8500_btemp_driver = {
-	.probe = ab8500_btemp_probe,
-	.remove = ab8500_btemp_remove,
-	.suspend = ab8500_btemp_suspend,
-	.resume = ab8500_btemp_resume,
-	.driver = {
-		.name = "ab8500-btemp",
-		.of_match_table = ab8500_btemp_match,
-	},
-};
-
-static int __init ab8500_btemp_init(void)
-{
-	return platform_driver_register(&ab8500_btemp_driver);
-}
-
-static void __exit ab8500_btemp_exit(void)
-{
-	platform_driver_unregister(&ab8500_btemp_driver);
-}
-
-device_initcall(ab8500_btemp_init);
-module_exit(ab8500_btemp_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Johan Palsson, Karl Komierowski, Arun R Murthy");
-MODULE_ALIAS("platform:ab8500-btemp");
-MODULE_DESCRIPTION("AB8500 battery temperature driver");