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, 839 deletions

diff --git a/drivers/power/ds2781_battery.c b/drivers/power/ds2781_battery.c
deleted file mode 100644
index c3680024f399..000000000000
--- a/drivers/power/ds2781_battery.c
+++ /dev/null
@@ -1,839 +0,0 @@
-/*
- * 1-wire client/driver for the Maxim/Dallas DS2781 Stand-Alone Fuel Gauge IC
- *
- * Author: Renata Sayakhova <renata@oktetlabs.ru>
- *
- * Based on ds2780_battery drivers
- *
- * 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.
- *
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/param.h>
-#include <linux/pm.h>
-#include <linux/platform_device.h>
-#include <linux/power_supply.h>
-#include <linux/idr.h>
-
-#include "../w1/w1.h"
-#include "../w1/slaves/w1_ds2781.h"
-
-/* Current unit measurement in uA for a 1 milli-ohm sense resistor */
-#define DS2781_CURRENT_UNITS	1563
-/* Charge unit measurement in uAh for a 1 milli-ohm sense resistor */
-#define DS2781_CHARGE_UNITS		6250
-/* Number of bytes in user EEPROM space */
-#define DS2781_USER_EEPROM_SIZE		(DS2781_EEPROM_BLOCK0_END - \
-					DS2781_EEPROM_BLOCK0_START + 1)
-/* Number of bytes in parameter EEPROM space */
-#define DS2781_PARAM_EEPROM_SIZE	(DS2781_EEPROM_BLOCK1_END - \
-					DS2781_EEPROM_BLOCK1_START + 1)
-
-struct ds2781_device_info {
-	struct device *dev;
-	struct power_supply *bat;
-	struct power_supply_desc bat_desc;
-	struct device *w1_dev;
-};
-
-enum current_types {
-	CURRENT_NOW,
-	CURRENT_AVG,
-};
-
-static const char model[] = "DS2781";
-static const char manufacturer[] = "Maxim/Dallas";
-
-static inline struct ds2781_device_info *
-to_ds2781_device_info(struct power_supply *psy)
-{
-	return power_supply_get_drvdata(psy);
-}
-
-static inline struct power_supply *to_power_supply(struct device *dev)
-{
-	return dev_get_drvdata(dev);
-}
-
-static inline int ds2781_battery_io(struct ds2781_device_info *dev_info,
-	char *buf, int addr, size_t count, int io)
-{
-	return w1_ds2781_io(dev_info->w1_dev, buf, addr, count, io);
-}
-
-static int w1_ds2781_read(struct ds2781_device_info *dev_info, char *buf,
-		int addr, size_t count)
-{
-	return ds2781_battery_io(dev_info, buf, addr, count, 0);
-}
-
-static inline int ds2781_read8(struct ds2781_device_info *dev_info, u8 *val,
-	int addr)
-{
-	return ds2781_battery_io(dev_info, val, addr, sizeof(u8), 0);
-}
-
-static int ds2781_read16(struct ds2781_device_info *dev_info, s16 *val,
-	int addr)
-{
-	int ret;
-	u8 raw[2];
-
-	ret = ds2781_battery_io(dev_info, raw, addr, sizeof(raw), 0);
-	if (ret < 0)
-		return ret;
-
-	*val = (raw[0] << 8) | raw[1];
-
-	return 0;
-}
-
-static inline int ds2781_read_block(struct ds2781_device_info *dev_info,
-	u8 *val, int addr, size_t count)
-{
-	return ds2781_battery_io(dev_info, val, addr, count, 0);
-}
-
-static inline int ds2781_write(struct ds2781_device_info *dev_info, u8 *val,
-	int addr, size_t count)
-{
-	return ds2781_battery_io(dev_info, val, addr, count, 1);
-}
-
-static inline int ds2781_store_eeprom(struct device *dev, int addr)
-{
-	return w1_ds2781_eeprom_cmd(dev, addr, W1_DS2781_COPY_DATA);
-}
-
-static inline int ds2781_recall_eeprom(struct device *dev, int addr)
-{
-	return w1_ds2781_eeprom_cmd(dev, addr, W1_DS2781_RECALL_DATA);
-}
-
-static int ds2781_save_eeprom(struct ds2781_device_info *dev_info, int reg)
-{
-	int ret;
-
-	ret = ds2781_store_eeprom(dev_info->w1_dev, reg);
-	if (ret < 0)
-		return ret;
-
-	ret = ds2781_recall_eeprom(dev_info->w1_dev, reg);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-/* Set sense resistor value in mhos */
-static int ds2781_set_sense_register(struct ds2781_device_info *dev_info,
-	u8 conductance)
-{
-	int ret;
-
-	ret = ds2781_write(dev_info, &conductance,
-				DS2781_RSNSP, sizeof(u8));
-	if (ret < 0)
-		return ret;
-
-	return ds2781_save_eeprom(dev_info, DS2781_RSNSP);
-}
-
-/* Get RSGAIN value from 0 to 1.999 in steps of 0.001 */
-static int ds2781_get_rsgain_register(struct ds2781_device_info *dev_info,
-	u16 *rsgain)
-{
-	return ds2781_read16(dev_info, rsgain, DS2781_RSGAIN_MSB);
-}
-
-/* Set RSGAIN value from 0 to 1.999 in steps of 0.001 */
-static int ds2781_set_rsgain_register(struct ds2781_device_info *dev_info,
-	u16 rsgain)
-{
-	int ret;
-	u8 raw[] = {rsgain >> 8, rsgain & 0xFF};
-
-	ret = ds2781_write(dev_info, raw,
-				DS2781_RSGAIN_MSB, sizeof(raw));
-	if (ret < 0)
-		return ret;
-
-	return ds2781_save_eeprom(dev_info, DS2781_RSGAIN_MSB);
-}
-
-static int ds2781_get_voltage(struct ds2781_device_info *dev_info,
-	int *voltage_uV)
-{
-	int ret;
-	char val[2];
-	int voltage_raw;
-
-	ret = w1_ds2781_read(dev_info, val, DS2781_VOLT_MSB, 2 * sizeof(u8));
-	if (ret < 0)
-		return ret;
-	/*
-	 * The voltage value is located in 10 bits across the voltage MSB
-	 * and LSB registers in two's compliment form
-	 * Sign bit of the voltage value is in bit 7 of the voltage MSB register
-	 * Bits 9 - 3 of the voltage value are in bits 6 - 0 of the
-	 * voltage MSB register
-	 * Bits 2 - 0 of the voltage value are in bits 7 - 5 of the
-	 * voltage LSB register
-	 */
-	voltage_raw = (val[0] << 3) |
-		(val[1] >> 5);
-
-	/* DS2781 reports voltage in units of 9.76mV, but the battery class
-	 * reports in units of uV, so convert by multiplying by 9760. */
-	*voltage_uV = voltage_raw * 9760;
-
-	return 0;
-}
-
-static int ds2781_get_temperature(struct ds2781_device_info *dev_info,
-	int *temp)
-{
-	int ret;
-	char val[2];
-	int temp_raw;
-
-	ret = w1_ds2781_read(dev_info, val, DS2781_TEMP_MSB, 2 * sizeof(u8));
-	if (ret < 0)
-		return ret;
-	/*
-	 * The temperature value is located in 10 bits across the temperature
-	 * MSB and LSB registers in two's compliment form
-	 * Sign bit of the temperature value is in bit 7 of the temperature
-	 * MSB register
-	 * Bits 9 - 3 of the temperature value are in bits 6 - 0 of the
-	 * temperature MSB register
-	 * Bits 2 - 0 of the temperature value are in bits 7 - 5 of the
-	 * temperature LSB register
-	 */
-	temp_raw = ((val[0]) << 3) |
-		(val[1] >> 5);
-	*temp = temp_raw + (temp_raw / 4);
-
-	return 0;
-}
-
-static int ds2781_get_current(struct ds2781_device_info *dev_info,
-	enum current_types type, int *current_uA)
-{
-	int ret, sense_res;
-	s16 current_raw;
-	u8 sense_res_raw, reg_msb;
-
-	/*
-	 * The units of measurement for current are dependent on the value of
-	 * the sense resistor.
-	 */
-	ret = ds2781_read8(dev_info, &sense_res_raw, DS2781_RSNSP);
-	if (ret < 0)
-		return ret;
-
-	if (sense_res_raw == 0) {
-		dev_err(dev_info->dev, "sense resistor value is 0\n");
-		return -EINVAL;
-	}
-	sense_res = 1000 / sense_res_raw;
-
-	if (type == CURRENT_NOW)
-		reg_msb = DS2781_CURRENT_MSB;
-	else if (type == CURRENT_AVG)
-		reg_msb = DS2781_IAVG_MSB;
-	else
-		return -EINVAL;
-
-	/*
-	 * The current value is located in 16 bits across the current MSB
-	 * and LSB registers in two's compliment form
-	 * Sign bit of the current value is in bit 7 of the current MSB register
-	 * Bits 14 - 8 of the current value are in bits 6 - 0 of the current
-	 * MSB register
-	 * Bits 7 - 0 of the current value are in bits 7 - 0 of the current
-	 * LSB register
-	 */
-	ret = ds2781_read16(dev_info, &current_raw, reg_msb);
-	if (ret < 0)
-		return ret;
-
-	*current_uA = current_raw * (DS2781_CURRENT_UNITS / sense_res);
-	return 0;
-}
-
-static int ds2781_get_accumulated_current(struct ds2781_device_info *dev_info,
-	int *accumulated_current)
-{
-	int ret, sense_res;
-	s16 current_raw;
-	u8 sense_res_raw;
-
-	/*
-	 * The units of measurement for accumulated current are dependent on
-	 * the value of the sense resistor.
-	 */
-	ret = ds2781_read8(dev_info, &sense_res_raw, DS2781_RSNSP);
-	if (ret < 0)
-		return ret;
-
-	if (sense_res_raw == 0) {
-		dev_err(dev_info->dev, "sense resistor value is 0\n");
-		return -EINVAL;
-	}
-	sense_res = 1000 / sense_res_raw;
-
-	/*
-	 * The ACR value is located in 16 bits across the ACR MSB and
-	 * LSB registers
-	 * Bits 15 - 8 of the ACR value are in bits 7 - 0 of the ACR
-	 * MSB register
-	 * Bits 7 - 0 of the ACR value are in bits 7 - 0 of the ACR
-	 * LSB register
-	 */
-	ret = ds2781_read16(dev_info, &current_raw, DS2781_ACR_MSB);
-	if (ret < 0)
-		return ret;
-
-	*accumulated_current = current_raw * (DS2781_CHARGE_UNITS / sense_res);
-	return 0;
-}
-
-static int ds2781_get_capacity(struct ds2781_device_info *dev_info,
-	int *capacity)
-{
-	int ret;
-	u8 raw;
-
-	ret = ds2781_read8(dev_info, &raw, DS2781_RARC);
-	if (ret < 0)
-		return ret;
-
-	*capacity = raw;
-	return 0;
-}
-
-static int ds2781_get_status(struct ds2781_device_info *dev_info, int *status)
-{
-	int ret, current_uA, capacity;
-
-	ret = ds2781_get_current(dev_info, CURRENT_NOW, &current_uA);
-	if (ret < 0)
-		return ret;
-
-	ret = ds2781_get_capacity(dev_info, &capacity);
-	if (ret < 0)
-		return ret;
-
-	if (power_supply_am_i_supplied(dev_info->bat)) {
-		if (capacity == 100)
-			*status = POWER_SUPPLY_STATUS_FULL;
-		else if (current_uA > 50000)
-			*status = POWER_SUPPLY_STATUS_CHARGING;
-		else
-			*status = POWER_SUPPLY_STATUS_NOT_CHARGING;
-	} else {
-		*status = POWER_SUPPLY_STATUS_DISCHARGING;
-	}
-	return 0;
-}
-
-static int ds2781_get_charge_now(struct ds2781_device_info *dev_info,
-	int *charge_now)
-{
-	int ret;
-	u16 charge_raw;
-
-	/*
-	 * The RAAC value is located in 16 bits across the RAAC MSB and
-	 * LSB registers
-	 * Bits 15 - 8 of the RAAC value are in bits 7 - 0 of the RAAC
-	 * MSB register
-	 * Bits 7 - 0 of the RAAC value are in bits 7 - 0 of the RAAC
-	 * LSB register
-	 */
-	ret = ds2781_read16(dev_info, &charge_raw, DS2781_RAAC_MSB);
-	if (ret < 0)
-		return ret;
-
-	*charge_now = charge_raw * 1600;
-	return 0;
-}
-
-static int ds2781_get_control_register(struct ds2781_device_info *dev_info,
-	u8 *control_reg)
-{
-	return ds2781_read8(dev_info, control_reg, DS2781_CONTROL);
-}
-
-static int ds2781_set_control_register(struct ds2781_device_info *dev_info,
-	u8 control_reg)
-{
-	int ret;
-
-	ret = ds2781_write(dev_info, &control_reg,
-				DS2781_CONTROL, sizeof(u8));
-	if (ret < 0)
-		return ret;
-
-	return ds2781_save_eeprom(dev_info, DS2781_CONTROL);
-}
-
-static int ds2781_battery_get_property(struct power_supply *psy,
-	enum power_supply_property psp,
-	union power_supply_propval *val)
-{
-	int ret = 0;
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-
-	switch (psp) {
-	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
-		ret = ds2781_get_voltage(dev_info, &val->intval);
-		break;
-
-	case POWER_SUPPLY_PROP_TEMP:
-		ret = ds2781_get_temperature(dev_info, &val->intval);
-		break;
-
-	case POWER_SUPPLY_PROP_MODEL_NAME:
-		val->strval = model;
-		break;
-
-	case POWER_SUPPLY_PROP_MANUFACTURER:
-		val->strval = manufacturer;
-		break;
-
-	case POWER_SUPPLY_PROP_CURRENT_NOW:
-		ret = ds2781_get_current(dev_info, CURRENT_NOW, &val->intval);
-		break;
-
-	case POWER_SUPPLY_PROP_CURRENT_AVG:
-		ret = ds2781_get_current(dev_info, CURRENT_AVG, &val->intval);
-		break;
-
-	case POWER_SUPPLY_PROP_STATUS:
-		ret = ds2781_get_status(dev_info, &val->intval);
-		break;
-
-	case POWER_SUPPLY_PROP_CAPACITY:
-		ret = ds2781_get_capacity(dev_info, &val->intval);
-		break;
-
-	case POWER_SUPPLY_PROP_CHARGE_COUNTER:
-		ret = ds2781_get_accumulated_current(dev_info, &val->intval);
-		break;
-
-	case POWER_SUPPLY_PROP_CHARGE_NOW:
-		ret = ds2781_get_charge_now(dev_info, &val->intval);
-		break;
-
-	default:
-		ret = -EINVAL;
-	}
-
-	return ret;
-}
-
-static enum power_supply_property ds2781_battery_props[] = {
-	POWER_SUPPLY_PROP_STATUS,
-	POWER_SUPPLY_PROP_VOLTAGE_NOW,
-	POWER_SUPPLY_PROP_TEMP,
-	POWER_SUPPLY_PROP_MODEL_NAME,
-	POWER_SUPPLY_PROP_MANUFACTURER,
-	POWER_SUPPLY_PROP_CURRENT_NOW,
-	POWER_SUPPLY_PROP_CURRENT_AVG,
-	POWER_SUPPLY_PROP_CAPACITY,
-	POWER_SUPPLY_PROP_CHARGE_COUNTER,
-	POWER_SUPPLY_PROP_CHARGE_NOW,
-};
-
-static ssize_t ds2781_get_pmod_enabled(struct device *dev,
-	struct device_attribute *attr,
-	char *buf)
-{
-	int ret;
-	u8 control_reg;
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-
-	/* Get power mode */
-	ret = ds2781_get_control_register(dev_info, &control_reg);
-	if (ret < 0)
-		return ret;
-
-	return sprintf(buf, "%d\n",
-		 !!(control_reg & DS2781_CONTROL_PMOD));
-}
-
-static ssize_t ds2781_set_pmod_enabled(struct device *dev,
-	struct device_attribute *attr,
-	const char *buf,
-	size_t count)
-{
-	int ret;
-	u8 control_reg, new_setting;
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-
-	/* Set power mode */
-	ret = ds2781_get_control_register(dev_info, &control_reg);
-	if (ret < 0)
-		return ret;
-
-	ret = kstrtou8(buf, 0, &new_setting);
-	if (ret < 0)
-		return ret;
-
-	if ((new_setting != 0) && (new_setting != 1)) {
-		dev_err(dev_info->dev, "Invalid pmod setting (0 or 1)\n");
-		return -EINVAL;
-	}
-
-	if (new_setting)
-		control_reg |= DS2781_CONTROL_PMOD;
-	else
-		control_reg &= ~DS2781_CONTROL_PMOD;
-
-	ret = ds2781_set_control_register(dev_info, control_reg);
-	if (ret < 0)
-		return ret;
-
-	return count;
-}
-
-static ssize_t ds2781_get_sense_resistor_value(struct device *dev,
-	struct device_attribute *attr,
-	char *buf)
-{
-	int ret;
-	u8 sense_resistor;
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-
-	ret = ds2781_read8(dev_info, &sense_resistor, DS2781_RSNSP);
-	if (ret < 0)
-		return ret;
-
-	ret = sprintf(buf, "%d\n", sense_resistor);
-	return ret;
-}
-
-static ssize_t ds2781_set_sense_resistor_value(struct device *dev,
-	struct device_attribute *attr,
-	const char *buf,
-	size_t count)
-{
-	int ret;
-	u8 new_setting;
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-
-	ret = kstrtou8(buf, 0, &new_setting);
-	if (ret < 0)
-		return ret;
-
-	ret = ds2781_set_sense_register(dev_info, new_setting);
-	if (ret < 0)
-		return ret;
-
-	return count;
-}
-
-static ssize_t ds2781_get_rsgain_setting(struct device *dev,
-	struct device_attribute *attr,
-	char *buf)
-{
-	int ret;
-	u16 rsgain;
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-
-	ret = ds2781_get_rsgain_register(dev_info, &rsgain);
-	if (ret < 0)
-		return ret;
-
-	return sprintf(buf, "%d\n", rsgain);
-}
-
-static ssize_t ds2781_set_rsgain_setting(struct device *dev,
-	struct device_attribute *attr,
-	const char *buf,
-	size_t count)
-{
-	int ret;
-	u16 new_setting;
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-
-	ret = kstrtou16(buf, 0, &new_setting);
-	if (ret < 0)
-		return ret;
-
-	/* Gain can only be from 0 to 1.999 in steps of .001 */
-	if (new_setting > 1999) {
-		dev_err(dev_info->dev, "Invalid rsgain setting (0 - 1999)\n");
-		return -EINVAL;
-	}
-
-	ret = ds2781_set_rsgain_register(dev_info, new_setting);
-	if (ret < 0)
-		return ret;
-
-	return count;
-}
-
-static ssize_t ds2781_get_pio_pin(struct device *dev,
-	struct device_attribute *attr,
-	char *buf)
-{
-	int ret;
-	u8 sfr;
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-
-	ret = ds2781_read8(dev_info, &sfr, DS2781_SFR);
-	if (ret < 0)
-		return ret;
-
-	ret = sprintf(buf, "%d\n", sfr & DS2781_SFR_PIOSC);
-	return ret;
-}
-
-static ssize_t ds2781_set_pio_pin(struct device *dev,
-	struct device_attribute *attr,
-	const char *buf,
-	size_t count)
-{
-	int ret;
-	u8 new_setting;
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-
-	ret = kstrtou8(buf, 0, &new_setting);
-	if (ret < 0)
-		return ret;
-
-	if ((new_setting != 0) && (new_setting != 1)) {
-		dev_err(dev_info->dev, "Invalid pio_pin setting (0 or 1)\n");
-		return -EINVAL;
-	}
-
-	ret = ds2781_write(dev_info, &new_setting,
-				DS2781_SFR, sizeof(u8));
-	if (ret < 0)
-		return ret;
-
-	return count;
-}
-
-static ssize_t ds2781_read_param_eeprom_bin(struct file *filp,
-				struct kobject *kobj,
-				struct bin_attribute *bin_attr,
-				char *buf, loff_t off, size_t count)
-{
-	struct device *dev = container_of(kobj, struct device, kobj);
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-
-	return ds2781_read_block(dev_info, buf,
-				DS2781_EEPROM_BLOCK1_START + off, count);
-}
-
-static ssize_t ds2781_write_param_eeprom_bin(struct file *filp,
-				struct kobject *kobj,
-				struct bin_attribute *bin_attr,
-				char *buf, loff_t off, size_t count)
-{
-	struct device *dev = container_of(kobj, struct device, kobj);
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-	int ret;
-
-	ret = ds2781_write(dev_info, buf,
-				DS2781_EEPROM_BLOCK1_START + off, count);
-	if (ret < 0)
-		return ret;
-
-	ret = ds2781_save_eeprom(dev_info, DS2781_EEPROM_BLOCK1_START);
-	if (ret < 0)
-		return ret;
-
-	return count;
-}
-
-static struct bin_attribute ds2781_param_eeprom_bin_attr = {
-	.attr = {
-		.name = "param_eeprom",
-		.mode = S_IRUGO | S_IWUSR,
-	},
-	.size = DS2781_PARAM_EEPROM_SIZE,
-	.read = ds2781_read_param_eeprom_bin,
-	.write = ds2781_write_param_eeprom_bin,
-};
-
-static ssize_t ds2781_read_user_eeprom_bin(struct file *filp,
-				struct kobject *kobj,
-				struct bin_attribute *bin_attr,
-				char *buf, loff_t off, size_t count)
-{
-	struct device *dev = container_of(kobj, struct device, kobj);
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-
-	return ds2781_read_block(dev_info, buf,
-				DS2781_EEPROM_BLOCK0_START + off, count);
-
-}
-
-static ssize_t ds2781_write_user_eeprom_bin(struct file *filp,
-				struct kobject *kobj,
-				struct bin_attribute *bin_attr,
-				char *buf, loff_t off, size_t count)
-{
-	struct device *dev = container_of(kobj, struct device, kobj);
-	struct power_supply *psy = to_power_supply(dev);
-	struct ds2781_device_info *dev_info = to_ds2781_device_info(psy);
-	int ret;
-
-	ret = ds2781_write(dev_info, buf,
-				DS2781_EEPROM_BLOCK0_START + off, count);
-	if (ret < 0)
-		return ret;
-
-	ret = ds2781_save_eeprom(dev_info, DS2781_EEPROM_BLOCK0_START);
-	if (ret < 0)
-		return ret;
-
-	return count;
-}
-
-static struct bin_attribute ds2781_user_eeprom_bin_attr = {
-	.attr = {
-		.name = "user_eeprom",
-		.mode = S_IRUGO | S_IWUSR,
-	},
-	.size = DS2781_USER_EEPROM_SIZE,
-	.read = ds2781_read_user_eeprom_bin,
-	.write = ds2781_write_user_eeprom_bin,
-};
-
-static DEVICE_ATTR(pmod_enabled, S_IRUGO | S_IWUSR, ds2781_get_pmod_enabled,
-	ds2781_set_pmod_enabled);
-static DEVICE_ATTR(sense_resistor_value, S_IRUGO | S_IWUSR,
-	ds2781_get_sense_resistor_value, ds2781_set_sense_resistor_value);
-static DEVICE_ATTR(rsgain_setting, S_IRUGO | S_IWUSR, ds2781_get_rsgain_setting,
-	ds2781_set_rsgain_setting);
-static DEVICE_ATTR(pio_pin, S_IRUGO | S_IWUSR, ds2781_get_pio_pin,
-	ds2781_set_pio_pin);
-
-
-static struct attribute *ds2781_attributes[] = {
-	&dev_attr_pmod_enabled.attr,
-	&dev_attr_sense_resistor_value.attr,
-	&dev_attr_rsgain_setting.attr,
-	&dev_attr_pio_pin.attr,
-	NULL
-};
-
-static const struct attribute_group ds2781_attr_group = {
-	.attrs = ds2781_attributes,
-};
-
-static int ds2781_battery_probe(struct platform_device *pdev)
-{
-	struct power_supply_config psy_cfg = {};
-	int ret = 0;
-	struct ds2781_device_info *dev_info;
-
-	dev_info = devm_kzalloc(&pdev->dev, sizeof(*dev_info), GFP_KERNEL);
-	if (!dev_info)
-		return -ENOMEM;
-
-	platform_set_drvdata(pdev, dev_info);
-
-	dev_info->dev			= &pdev->dev;
-	dev_info->w1_dev		= pdev->dev.parent;
-	dev_info->bat_desc.name		= dev_name(&pdev->dev);
-	dev_info->bat_desc.type		= POWER_SUPPLY_TYPE_BATTERY;
-	dev_info->bat_desc.properties	= ds2781_battery_props;
-	dev_info->bat_desc.num_properties = ARRAY_SIZE(ds2781_battery_props);
-	dev_info->bat_desc.get_property	= ds2781_battery_get_property;
-
-	psy_cfg.drv_data		= dev_info;
-
-	dev_info->bat = power_supply_register(&pdev->dev, &dev_info->bat_desc,
-						&psy_cfg);
-	if (IS_ERR(dev_info->bat)) {
-		dev_err(dev_info->dev, "failed to register battery\n");
-		ret = PTR_ERR(dev_info->bat);
-		goto fail;
-	}
-
-	ret = sysfs_create_group(&dev_info->bat->dev.kobj, &ds2781_attr_group);
-	if (ret) {
-		dev_err(dev_info->dev, "failed to create sysfs group\n");
-		goto fail_unregister;
-	}
-
-	ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj,
-					&ds2781_param_eeprom_bin_attr);
-	if (ret) {
-		dev_err(dev_info->dev,
-				"failed to create param eeprom bin file");
-		goto fail_remove_group;
-	}
-
-	ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj,
-					&ds2781_user_eeprom_bin_attr);
-	if (ret) {
-		dev_err(dev_info->dev,
-				"failed to create user eeprom bin file");
-		goto fail_remove_bin_file;
-	}
-
-	return 0;
-
-fail_remove_bin_file:
-	sysfs_remove_bin_file(&dev_info->bat->dev.kobj,
-				&ds2781_param_eeprom_bin_attr);
-fail_remove_group:
-	sysfs_remove_group(&dev_info->bat->dev.kobj, &ds2781_attr_group);
-fail_unregister:
-	power_supply_unregister(dev_info->bat);
-fail:
-	return ret;
-}
-
-static int ds2781_battery_remove(struct platform_device *pdev)
-{
-	struct ds2781_device_info *dev_info = platform_get_drvdata(pdev);
-
-	/*
-	 * Remove attributes before unregistering power supply
-	 * because 'bat' will be freed on power_supply_unregister() call.
-	 */
-	sysfs_remove_group(&dev_info->bat->dev.kobj, &ds2781_attr_group);
-
-	power_supply_unregister(dev_info->bat);
-
-	return 0;
-}
-
-static struct platform_driver ds2781_battery_driver = {
-	.driver = {
-		.name = "ds2781-battery",
-	},
-	.probe	  = ds2781_battery_probe,
-	.remove   = ds2781_battery_remove,
-};
-module_platform_driver(ds2781_battery_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Renata Sayakhova <renata@oktetlabs.ru>");
-MODULE_DESCRIPTION("Maxim/Dallas DS2781 Stand-Alone Fuel Gauage IC driver");
-MODULE_ALIAS("platform:ds2781-battery");
-