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-rw-r--r--drivers/power/Kconfig15
-rw-r--r--drivers/power/Makefile4
-rw-r--r--drivers/power/da9030_battery.c19
-rw-r--r--drivers/power/ds2760_battery.c42
-rw-r--r--drivers/power/ds2782_battery.c330
-rw-r--r--drivers/power/max17040_battery.c309
-rw-r--r--drivers/power/olpc_battery.c26
-rw-r--r--drivers/power/wm97xx_battery.c4
8 files changed, 719 insertions, 30 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 33da1127992a..bdbc4f73fcdc 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -43,6 +43,13 @@ config BATTERY_DS2760
help
Say Y here to enable support for batteries with ds2760 chip.
+config BATTERY_DS2782
+ tristate "DS2782 standalone gas-gauge"
+ depends on I2C
+ help
+ Say Y here to enable support for the DS2782 standalone battery
+ gas-gauge.
+
config BATTERY_PMU
tristate "Apple PMU battery"
depends on PPC32 && ADB_PMU
@@ -82,6 +89,14 @@ config BATTERY_DA9030
Say Y here to enable support for batteries charger integrated into
DA9030 PMIC.
+config BATTERY_MAX17040
+ tristate "Maxim MAX17040 Fuel Gauge"
+ depends on I2C
+ help
+ MAX17040 is fuel-gauge systems for lithium-ion (Li+) batteries
+ in handheld and portable equipment. The MAX17040 is configured
+ to operate with a single lithium cell
+
config CHARGER_PCF50633
tristate "NXP PCF50633 MBC"
depends on MFD_PCF50633
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 2fcf41d13e5c..380d17c9ae29 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -19,10 +19,12 @@ obj-$(CONFIG_APM_POWER) += apm_power.o
obj-$(CONFIG_WM8350_POWER) += wm8350_power.o
obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o
+obj-$(CONFIG_BATTERY_DS2782) += ds2782_battery.o
obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o
obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o
obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o
obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
-obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o \ No newline at end of file
+obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o
+obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
diff --git a/drivers/power/da9030_battery.c b/drivers/power/da9030_battery.c
index 1662bb0f23a5..3364198134a1 100644
--- a/drivers/power/da9030_battery.c
+++ b/drivers/power/da9030_battery.c
@@ -22,8 +22,6 @@
#include <linux/debugfs.h>
#include <linux/seq_file.h>
-#define DA9030_STATUS_CHDET (1 << 3)
-
#define DA9030_FAULT_LOG 0x0a
#define DA9030_FAULT_LOG_OVER_TEMP (1 << 7)
#define DA9030_FAULT_LOG_VBAT_OVER (1 << 4)
@@ -244,6 +242,8 @@ static void da9030_set_charge(struct da9030_charger *charger, int on)
}
da903x_write(charger->master, DA9030_CHARGE_CONTROL, val);
+
+ power_supply_changed(&charger->psy);
}
static void da9030_charger_check_state(struct da9030_charger *charger)
@@ -258,6 +258,12 @@ static void da9030_charger_check_state(struct da9030_charger *charger)
da9030_set_charge(charger, 1);
}
} else {
+ /* Charger has been pulled out */
+ if (!charger->chdet) {
+ da9030_set_charge(charger, 0);
+ return;
+ }
+
if (charger->adc.vbat_res >=
charger->thresholds.vbat_charge_stop) {
da9030_set_charge(charger, 0);
@@ -395,13 +401,11 @@ static int da9030_battery_event(struct notifier_block *nb, unsigned long event,
{
struct da9030_charger *charger =
container_of(nb, struct da9030_charger, nb);
- int status;
switch (event) {
case DA9030_EVENT_CHDET:
- status = da903x_query_status(charger->master,
- DA9030_STATUS_CHDET);
- da9030_set_charge(charger, status);
+ cancel_delayed_work_sync(&charger->work);
+ schedule_work(&charger->work.work);
break;
case DA9030_EVENT_VBATMON:
da9030_battery_vbat_event(charger);
@@ -565,7 +569,8 @@ static int da9030_battery_remove(struct platform_device *dev)
da903x_unregister_notifier(charger->master, &charger->nb,
DA9030_EVENT_CHDET | DA9030_EVENT_VBATMON |
DA9030_EVENT_CHIOVER | DA9030_EVENT_TBAT);
- cancel_delayed_work(&charger->work);
+ cancel_delayed_work_sync(&charger->work);
+ da9030_set_charge(charger, 0);
power_supply_unregister(&charger->psy);
kfree(charger);
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index a52d4a11652d..520b5c49ff30 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -62,6 +62,10 @@ static unsigned int cache_time = 1000;
module_param(cache_time, uint, 0644);
MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
+static unsigned int pmod_enabled;
+module_param(pmod_enabled, bool, 0644);
+MODULE_PARM_DESC(pmod_enabled, "PMOD enable bit");
+
/* Some batteries have their rated capacity stored a N * 10 mAh, while
* others use an index into this table. */
static int rated_capacities[] = {
@@ -259,6 +263,17 @@ static void ds2760_battery_update_status(struct ds2760_device_info *di)
power_supply_changed(&di->bat);
}
+static void ds2760_battery_write_status(struct ds2760_device_info *di,
+ char status)
+{
+ if (status == di->raw[DS2760_STATUS_REG])
+ return;
+
+ w1_ds2760_write(di->w1_dev, &status, DS2760_STATUS_WRITE_REG, 1);
+ w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+ w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+}
+
static void ds2760_battery_work(struct work_struct *work)
{
struct ds2760_device_info *di = container_of(work,
@@ -342,9 +357,9 @@ static enum power_supply_property ds2760_battery_props[] = {
static int ds2760_battery_probe(struct platform_device *pdev)
{
+ char status;
int retval = 0;
struct ds2760_device_info *di;
- struct ds2760_platform_data *pdata;
di = kzalloc(sizeof(*di), GFP_KERNEL);
if (!di) {
@@ -354,14 +369,13 @@ static int ds2760_battery_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, di);
- pdata = pdev->dev.platform_data;
- di->dev = &pdev->dev;
- di->w1_dev = pdev->dev.parent;
- di->bat.name = dev_name(&pdev->dev);
- di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
- di->bat.properties = ds2760_battery_props;
- di->bat.num_properties = ARRAY_SIZE(ds2760_battery_props);
- di->bat.get_property = ds2760_battery_get_property;
+ di->dev = &pdev->dev;
+ di->w1_dev = pdev->dev.parent;
+ di->bat.name = dev_name(&pdev->dev);
+ di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
+ di->bat.properties = ds2760_battery_props;
+ di->bat.num_properties = ARRAY_SIZE(ds2760_battery_props);
+ di->bat.get_property = ds2760_battery_get_property;
di->bat.external_power_changed =
ds2760_battery_external_power_changed;
@@ -373,6 +387,16 @@ static int ds2760_battery_probe(struct platform_device *pdev)
goto batt_failed;
}
+ /* enable sleep mode feature */
+ ds2760_battery_read_status(di);
+ status = di->raw[DS2760_STATUS_REG];
+ if (pmod_enabled)
+ status |= DS2760_STATUS_PMOD;
+ else
+ status &= ~DS2760_STATUS_PMOD;
+
+ ds2760_battery_write_status(di, status);
+
INIT_DELAYED_WORK(&di->monitor_work, ds2760_battery_work);
di->monitor_wqueue = create_singlethread_workqueue(dev_name(&pdev->dev));
if (!di->monitor_wqueue) {
diff --git a/drivers/power/ds2782_battery.c b/drivers/power/ds2782_battery.c
new file mode 100644
index 000000000000..da14f374cb60
--- /dev/null
+++ b/drivers/power/ds2782_battery.c
@@ -0,0 +1,330 @@
+/*
+ * I2C client/driver for the Maxim/Dallas DS2782 Stand-Alone Fuel Gauge IC
+ *
+ * Copyright (C) 2009 Bluewater Systems Ltd
+ *
+ * Author: Ryan Mallon <ryan@bluewatersys.com>
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/swab.h>
+#include <linux/i2c.h>
+#include <linux/idr.h>
+#include <linux/power_supply.h>
+
+#define DS2782_REG_RARC 0x06 /* Remaining active relative capacity */
+
+#define DS2782_REG_VOLT_MSB 0x0c
+#define DS2782_REG_TEMP_MSB 0x0a
+#define DS2782_REG_CURRENT_MSB 0x0e
+
+/* EEPROM Block */
+#define DS2782_REG_RSNSP 0x69 /* Sense resistor value */
+
+/* Current unit measurement in uA for a 1 milli-ohm sense resistor */
+#define DS2782_CURRENT_UNITS 1563
+
+#define to_ds2782_info(x) container_of(x, struct ds2782_info, battery)
+
+struct ds2782_info {
+ struct i2c_client *client;
+ struct power_supply battery;
+ int id;
+};
+
+static DEFINE_IDR(battery_id);
+static DEFINE_MUTEX(battery_lock);
+
+static inline int ds2782_read_reg(struct ds2782_info *info, int reg, u8 *val)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(info->client, reg);
+ if (ret < 0) {
+ dev_err(&info->client->dev, "register read failed\n");
+ return ret;
+ }
+
+ *val = ret;
+ return 0;
+}
+
+static inline int ds2782_read_reg16(struct ds2782_info *info, int reg_msb,
+ s16 *val)
+{
+ int ret;
+
+ ret = swab16(i2c_smbus_read_word_data(info->client, reg_msb));
+ if (ret < 0) {
+ dev_err(&info->client->dev, "register read failed\n");
+ return ret;
+ }
+
+ *val = ret;
+ return 0;
+}
+
+static int ds2782_get_temp(struct ds2782_info *info, int *temp)
+{
+ s16 raw;
+ int err;
+
+ /*
+ * Temperature is measured in units of 0.125 degrees celcius, the
+ * power_supply class measures temperature in tenths of degrees
+ * celsius. The temperature value is stored as a 10 bit number, plus
+ * sign in the upper bits of a 16 bit register.
+ */
+ err = ds2782_read_reg16(info, DS2782_REG_TEMP_MSB, &raw);
+ if (err)
+ return err;
+ *temp = ((raw / 32) * 125) / 100;
+ return 0;
+}
+
+static int ds2782_get_current(struct ds2782_info *info, int *current_uA)
+{
+ int sense_res;
+ int err;
+ u8 sense_res_raw;
+ s16 raw;
+
+ /*
+ * The units of measurement for current are dependent on the value of
+ * the sense resistor.
+ */
+ err = ds2782_read_reg(info, DS2782_REG_RSNSP, &sense_res_raw);
+ if (err)
+ return err;
+ if (sense_res_raw == 0) {
+ dev_err(&info->client->dev, "sense resistor value is 0\n");
+ return -ENXIO;
+ }
+ sense_res = 1000 / sense_res_raw;
+
+ dev_dbg(&info->client->dev, "sense resistor = %d milli-ohms\n",
+ sense_res);
+ err = ds2782_read_reg16(info, DS2782_REG_CURRENT_MSB, &raw);
+ if (err)
+ return err;
+ *current_uA = raw * (DS2782_CURRENT_UNITS / sense_res);
+ return 0;
+}
+
+static int ds2782_get_voltage(struct ds2782_info *info, int *voltage_uA)
+{
+ s16 raw;
+ int err;
+
+ /*
+ * Voltage is measured in units of 4.88mV. The voltage is stored as
+ * a 10-bit number plus sign, in the upper bits of a 16-bit register
+ */
+ err = ds2782_read_reg16(info, DS2782_REG_VOLT_MSB, &raw);
+ if (err)
+ return err;
+ *voltage_uA = (raw / 32) * 4800;
+ return 0;
+}
+
+static int ds2782_get_capacity(struct ds2782_info *info, int *capacity)
+{
+ int err;
+ u8 raw;
+
+ err = ds2782_read_reg(info, DS2782_REG_RARC, &raw);
+ if (err)
+ return err;
+ *capacity = raw;
+ return raw;
+}
+
+static int ds2782_get_status(struct ds2782_info *info, int *status)
+{
+ int err;
+ int current_uA;
+ int capacity;
+
+ err = ds2782_get_current(info, &current_uA);
+ if (err)
+ return err;
+
+ err = ds2782_get_capacity(info, &capacity);
+ if (err)
+ return err;
+
+ if (capacity == 100)
+ *status = POWER_SUPPLY_STATUS_FULL;
+ else if (current_uA == 0)
+ *status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else if (current_uA < 0)
+ *status = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ *status = POWER_SUPPLY_STATUS_CHARGING;
+
+ return 0;
+}
+
+static int ds2782_battery_get_property(struct power_supply *psy,
+ enum power_supply_property prop,
+ union power_supply_propval *val)
+{
+ struct ds2782_info *info = to_ds2782_info(psy);
+ int ret;
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = ds2782_get_status(info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = ds2782_get_capacity(info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = ds2782_get_voltage(info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = ds2782_get_current(info, &val->intval);
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ ret = ds2782_get_temp(info, &val->intval);
+ break;
+
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property ds2782_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+};
+
+static void ds2782_power_supply_init(struct power_supply *battery)
+{
+ battery->type = POWER_SUPPLY_TYPE_BATTERY;
+ battery->properties = ds2782_battery_props;
+ battery->num_properties = ARRAY_SIZE(ds2782_battery_props);
+ battery->get_property = ds2782_battery_get_property;
+ battery->external_power_changed = NULL;
+}
+
+static int ds2782_battery_remove(struct i2c_client *client)
+{
+ struct ds2782_info *info = i2c_get_clientdata(client);
+
+ power_supply_unregister(&info->battery);
+ kfree(info->battery.name);
+
+ mutex_lock(&battery_lock);
+ idr_remove(&battery_id, info->id);
+ mutex_unlock(&battery_lock);
+
+ i2c_set_clientdata(client, info);
+
+ kfree(info);
+ return 0;
+}
+
+static int ds2782_battery_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct ds2782_info *info;
+ int ret;
+ int num;
+
+ /* Get an ID for this battery */
+ ret = idr_pre_get(&battery_id, GFP_KERNEL);
+ if (ret == 0) {
+ ret = -ENOMEM;
+ goto fail_id;
+ }
+
+ mutex_lock(&battery_lock);
+ ret = idr_get_new(&battery_id, client, &num);
+ mutex_unlock(&battery_lock);
+ if (ret < 0)
+ goto fail_id;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ ret = -ENOMEM;
+ goto fail_info;
+ }
+
+ info->battery.name = kasprintf(GFP_KERNEL, "ds2782-%d", num);
+ if (!info->battery.name) {
+ ret = -ENOMEM;
+ goto fail_name;
+ }
+
+ i2c_set_clientdata(client, info);
+ info->client = client;
+ ds2782_power_supply_init(&info->battery);
+
+ ret = power_supply_register(&client->dev, &info->battery);
+ if (ret) {
+ dev_err(&client->dev, "failed to register battery\n");
+ goto fail_register;
+ }
+
+ return 0;
+
+fail_register:
+ kfree(info->battery.name);
+fail_name:
+ i2c_set_clientdata(client, info);
+ kfree(info);
+fail_info:
+ mutex_lock(&battery_lock);
+ idr_remove(&battery_id, num);
+ mutex_unlock(&battery_lock);
+fail_id:
+ return ret;
+}
+
+static const struct i2c_device_id ds2782_id[] = {
+ {"ds2782", 0},
+ {},
+};
+
+static struct i2c_driver ds2782_battery_driver = {
+ .driver = {
+ .name = "ds2782-battery",
+ },
+ .probe = ds2782_battery_probe,
+ .remove = ds2782_battery_remove,
+ .id_table = ds2782_id,
+};
+
+static int __init ds2782_init(void)
+{
+ return i2c_add_driver(&ds2782_battery_driver);
+}
+module_init(ds2782_init);
+
+static void __exit ds2782_exit(void)
+{
+ i2c_del_driver(&ds2782_battery_driver);
+}
+module_exit(ds2782_exit);
+
+MODULE_AUTHOR("Ryan Mallon <ryan@bluewatersys.com>");
+MODULE_DESCRIPTION("Maxim/Dallas DS2782 Stand-Alone Fuel Gauage IC driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/max17040_battery.c b/drivers/power/max17040_battery.c
new file mode 100644
index 000000000000..87b98bf27ae1
--- /dev/null
+++ b/drivers/power/max17040_battery.c
@@ -0,0 +1,309 @@
+/*
+ * max17040_battery.c
+ * fuel-gauge systems for lithium-ion (Li+) batteries
+ *
+ * Copyright (C) 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * 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/init.h>
+#include <linux/platform_device.h>
+#include <linux/mutex.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/power_supply.h>
+#include <linux/max17040_battery.h>
+
+#define MAX17040_VCELL_MSB 0x02
+#define MAX17040_VCELL_LSB 0x03
+#define MAX17040_SOC_MSB 0x04
+#define MAX17040_SOC_LSB 0x05
+#define MAX17040_MODE_MSB 0x06
+#define MAX17040_MODE_LSB 0x07
+#define MAX17040_VER_MSB 0x08
+#define MAX17040_VER_LSB 0x09
+#define MAX17040_RCOMP_MSB 0x0C
+#define MAX17040_RCOMP_LSB 0x0D
+#define MAX17040_CMD_MSB 0xFE
+#define MAX17040_CMD_LSB 0xFF
+
+#define MAX17040_DELAY 1000
+#define MAX17040_BATTERY_FULL 95
+
+struct max17040_chip {
+ struct i2c_client *client;
+ struct delayed_work work;
+ struct power_supply battery;
+ struct max17040_platform_data *pdata;
+
+ /* State Of Connect */
+ int online;
+ /* battery voltage */
+ int vcell;
+ /* battery capacity */
+ int soc;
+ /* State Of Charge */
+ int status;
+};
+
+static int max17040_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max17040_chip *chip = container_of(psy,
+ struct max17040_chip, battery);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = chip->status;
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = chip->online;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = chip->vcell;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = chip->soc;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int max17040_write_reg(struct i2c_client *client, int reg, u8 value)
+{
+ int ret;
+
+ ret = i2c_smbus_write_byte_data(client, reg, value);
+
+ if (ret < 0)
+ dev_err(&client->dev, "%s: err %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int max17040_read_reg(struct i2c_client *client, int reg)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(client, reg);
+
+ if (ret < 0)
+ dev_err(&client->dev, "%s: err %d\n", __func__, ret);
+
+ return ret;
+}
+
+static void max17040_reset(struct i2c_client *client)
+{
+ max17040_write_reg(client, MAX17040_CMD_MSB, 0x54);
+ max17040_write_reg(client, MAX17040_CMD_LSB, 0x00);
+}
+
+static void max17040_get_vcell(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+ u8 msb;
+ u8 lsb;
+
+ msb = max17040_read_reg(client, MAX17040_VCELL_MSB);
+ lsb = max17040_read_reg(client, MAX17040_VCELL_LSB);
+
+ chip->vcell = (msb << 4) + (lsb >> 4);
+}
+
+static void max17040_get_soc(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+ u8 msb;
+ u8 lsb;
+
+ msb = max17040_read_reg(client, MAX17040_SOC_MSB);
+ lsb = max17040_read_reg(client, MAX17040_SOC_LSB);
+
+ chip->soc = msb;
+}
+
+static void max17040_get_version(struct i2c_client *client)
+{
+ u8 msb;
+ u8 lsb;
+
+ msb = max17040_read_reg(client, MAX17040_VER_MSB);
+ lsb = max17040_read_reg(client, MAX17040_VER_LSB);
+
+ dev_info(&client->dev, "MAX17040 Fuel-Gauge Ver %d%d\n", msb, lsb);
+}
+
+static void max17040_get_online(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+
+ if (chip->pdata->battery_online)
+ chip->online = chip->pdata->battery_online();
+ else
+ chip->online = 1;
+}
+
+static void max17040_get_status(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+
+ if (!chip->pdata->charger_online || !chip->pdata->charger_enable) {
+ chip->status = POWER_SUPPLY_STATUS_UNKNOWN;
+ return;
+ }
+
+ if (chip->pdata->charger_online()) {
+ if (chip->pdata->charger_enable())
+ chip->status = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ chip->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ } else {
+ chip->status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ if (chip->soc > MAX17040_BATTERY_FULL)
+ chip->status = POWER_SUPPLY_STATUS_FULL;
+}
+
+static void max17040_work(struct work_struct *work)
+{
+ struct max17040_chip *chip;
+
+ chip = container_of(work, struct max17040_chip, work.work);
+
+ max17040_get_vcell(chip->client);
+ max17040_get_soc(chip->client);
+ max17040_get_online(chip->client);
+ max17040_get_status(chip->client);
+
+ schedule_delayed_work(&chip->work, MAX17040_DELAY);
+}
+
+static enum power_supply_property max17040_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+};
+
+static int __devinit max17040_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct max17040_chip *chip;
+ int ret;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
+ return -EIO;
+
+ chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->client = client;
+ chip->pdata = client->dev.platform_data;
+
+ i2c_set_clientdata(client, chip);
+
+ chip->battery.name = "battery";
+ chip->battery.type = POWER_SUPPLY_TYPE_BATTERY;
+ chip->battery.get_property = max17040_get_property;
+ chip->battery.properties = max17040_battery_props;
+ chip->battery.num_properties = ARRAY_SIZE(max17040_battery_props);
+
+ ret = power_supply_register(&client->dev, &chip->battery);
+ if (ret) {
+ dev_err(&client->dev, "failed: power supply register\n");
+ i2c_set_clientdata(client, NULL);
+ kfree(chip);
+ return ret;
+ }
+
+ max17040_reset(client);
+ max17040_get_version(client);
+
+ INIT_DELAYED_WORK_DEFERRABLE(&chip->work, max17040_work);
+ schedule_delayed_work(&chip->work, MAX17040_DELAY);
+
+ return 0;
+}
+
+static int __devexit max17040_remove(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+
+ power_supply_unregister(&chip->battery);
+ cancel_delayed_work(&chip->work);
+ i2c_set_clientdata(client, NULL);
+ kfree(chip);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int max17040_suspend(struct i2c_client *client,
+ pm_message_t state)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+
+ cancel_delayed_work(&chip->work);
+ return 0;
+}
+
+static int max17040_resume(struct i2c_client *client)
+{
+ struct max17040_chip *chip = i2c_get_clientdata(client);
+
+ schedule_delayed_work(&chip->work, MAX17040_DELAY);
+ return 0;
+}
+
+#else
+
+#define max17040_suspend NULL
+#define max17040_resume NULL
+
+#endif /* CONFIG_PM */
+
+static const struct i2c_device_id max17040_id[] = {
+ { "max17040", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max17040_id);
+
+static struct i2c_driver max17040_i2c_driver = {
+ .driver = {
+ .name = "max17040",
+ },
+ .probe = max17040_probe,
+ .remove = __devexit_p(max17040_remove),
+ .suspend = max17040_suspend,
+ .resume = max17040_resume,
+ .id_table = max17040_id,
+};
+
+static int __init max17040_init(void)
+{
+ return i2c_add_driver(&max17040_i2c_driver);
+}
+module_init(max17040_init);
+
+static void __exit max17040_exit(void)
+{
+ i2c_del_driver(&max17040_i2c_driver);
+}
+module_exit(max17040_exit);
+
+MODULE_AUTHOR("Minkyu Kang <mk7.kang@samsung.com>");
+MODULE_DESCRIPTION("MAX17040 Fuel Gauge");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c
index 5fbca2681baa..58e419299cd6 100644
--- a/drivers/power/olpc_battery.c
+++ b/drivers/power/olpc_battery.c
@@ -8,6 +8,7 @@
* published by the Free Software Foundation.
*/
+#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/platform_device.h>
@@ -35,6 +36,7 @@
#define BAT_STAT_AC 0x10
#define BAT_STAT_CHARGING 0x20
#define BAT_STAT_DISCHARGING 0x40
+#define BAT_STAT_TRICKLE 0x80
#define BAT_ERR_INFOFAIL 0x02
#define BAT_ERR_OVERVOLTAGE 0x04
@@ -89,7 +91,7 @@ static char bat_serial[17]; /* Ick */
static int olpc_bat_get_status(union power_supply_propval *val, uint8_t ec_byte)
{
if (olpc_platform_info.ecver > 0x44) {
- if (ec_byte & BAT_STAT_CHARGING)
+ if (ec_byte & (BAT_STAT_CHARGING | BAT_STAT_TRICKLE))
val->intval = POWER_SUPPLY_STATUS_CHARGING;
else if (ec_byte & BAT_STAT_DISCHARGING)
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
@@ -219,7 +221,8 @@ static int olpc_bat_get_property(struct power_supply *psy,
It doesn't matter though -- the EC will return the last-known
information, and it's as if we just ran that _little_ bit faster
and managed to read it out before the battery went away. */
- if (!(ec_byte & BAT_STAT_PRESENT) && psp != POWER_SUPPLY_PROP_PRESENT)
+ if (!(ec_byte & (BAT_STAT_PRESENT | BAT_STAT_TRICKLE)) &&
+ psp != POWER_SUPPLY_PROP_PRESENT)
return -ENODEV;
switch (psp) {
@@ -229,7 +232,8 @@ static int olpc_bat_get_property(struct power_supply *psy,
return ret;
break;
case POWER_SUPPLY_PROP_PRESENT:
- val->intval = !!(ec_byte & BAT_STAT_PRESENT);
+ val->intval = !!(ec_byte & (BAT_STAT_PRESENT |
+ BAT_STAT_TRICKLE));
break;
case POWER_SUPPLY_PROP_HEALTH:
@@ -334,21 +338,21 @@ static ssize_t olpc_bat_eeprom_read(struct kobject *kobj,
struct bin_attribute *attr, char *buf, loff_t off, size_t count)
{
uint8_t ec_byte;
- int ret, end;
+ int ret;
+ int i;
if (off >= EEPROM_SIZE)
return 0;
if (off + count > EEPROM_SIZE)
count = EEPROM_SIZE - off;
- end = EEPROM_START + off + count;
- for (ec_byte = EEPROM_START + off; ec_byte < end; ec_byte++) {
- ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1,
- &buf[ec_byte - EEPROM_START], 1);
+ for (i = 0; i < count; i++) {
+ ec_byte = EEPROM_START + off + i;
+ ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &buf[i], 1);
if (ret) {
- printk(KERN_ERR "olpc-battery: EC command "
- "EC_BAT_EEPROM @ 0x%x failed -"
- " %d!\n", ec_byte, ret);
+ pr_err("olpc-battery: "
+ "EC_BAT_EEPROM cmd @ 0x%x failed - %d!\n",
+ ec_byte, ret);
return -EIO;
}
}
diff --git a/drivers/power/wm97xx_battery.c b/drivers/power/wm97xx_battery.c
index 8bde92126d34..b787335a8419 100644
--- a/drivers/power/wm97xx_battery.c
+++ b/drivers/power/wm97xx_battery.c
@@ -33,14 +33,14 @@ static enum power_supply_property *prop;
static unsigned long wm97xx_read_bat(struct power_supply *bat_ps)
{
- return wm97xx_read_aux_adc(bat_ps->dev->parent->driver_data,
+ return wm97xx_read_aux_adc(dev_get_drvdata(bat_ps->dev->parent),
pdata->batt_aux) * pdata->batt_mult /
pdata->batt_div;
}
static unsigned long wm97xx_read_temp(struct power_supply *bat_ps)
{
- return wm97xx_read_aux_adc(bat_ps->dev->parent->driver_data,
+ return wm97xx_read_aux_adc(dev_get_drvdata(bat_ps->dev->parent),
pdata->temp_aux) * pdata->temp_mult /
pdata->temp_div;
}