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-rw-r--r--drivers/power/Kconfig20
-rw-r--r--drivers/power/Makefile2
-rw-r--r--drivers/power/collie_battery.c13
-rw-r--r--drivers/power/ds2760_battery.c8
-rw-r--r--drivers/power/gpio-charger.c188
-rw-r--r--drivers/power/intel_mid_battery.c8
-rw-r--r--drivers/power/isp1704_charger.c201
-rw-r--r--drivers/power/jz4740-battery.c13
-rw-r--r--drivers/power/max17042_battery.c239
-rw-r--r--drivers/power/olpc_battery.c114
-rw-r--r--drivers/power/power_supply_core.c6
-rw-r--r--drivers/power/s3c_adc_battery.c16
-rw-r--r--drivers/power/tosa_battery.c13
-rw-r--r--drivers/power/wm97xx_battery.c4
-rw-r--r--drivers/power/z2_battery.c6
15 files changed, 772 insertions, 79 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 60d83d983a36..61bf5d724139 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -136,6 +136,16 @@ config BATTERY_MAX17040
in handheld and portable equipment. The MAX17040 is configured
to operate with a single lithium cell
+config BATTERY_MAX17042
+ tristate "Maxim MAX17042/8997/8966 Fuel Gauge"
+ depends on I2C
+ help
+ MAX17042 is fuel-gauge systems for lithium-ion (Li+) batteries
+ in handheld and portable equipment. The MAX17042 is configured
+ to operate with a single lithium cell. MAX8997 and MAX8966 are
+ multi-function devices that include fuel gauages that are compatible
+ with MAX17042.
+
config BATTERY_Z2
tristate "Z2 battery driver"
depends on I2C && MACH_ZIPIT2
@@ -185,4 +195,14 @@ config CHARGER_TWL4030
help
Say Y here to enable support for TWL4030 Battery Charge Interface.
+config CHARGER_GPIO
+ tristate "GPIO charger"
+ depends on GPIOLIB
+ help
+ Say Y to include support for chargers which report their online status
+ through a GPIO pin.
+
+ This driver can be build as a module. If so, the module will be
+ called gpio-charger.
+
endif # POWER_SUPPLY
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index c75772eb157c..8385bfae8728 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_BATTERY_BQ20Z75) += bq20z75.o
obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o
+obj-$(CONFIG_BATTERY_MAX17042) += max17042_battery.o
obj-$(CONFIG_BATTERY_Z2) += z2_battery.o
obj-$(CONFIG_BATTERY_S3C_ADC) += s3c_adc_battery.o
obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
@@ -32,3 +33,4 @@ obj-$(CONFIG_BATTERY_JZ4740) += jz4740-battery.o
obj-$(CONFIG_BATTERY_INTEL_MID) += intel_mid_battery.o
obj-$(CONFIG_CHARGER_ISP1704) += isp1704_charger.o
obj-$(CONFIG_CHARGER_TWL4030) += twl4030_charger.o
+obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o
diff --git a/drivers/power/collie_battery.c b/drivers/power/collie_battery.c
index 039f41ae217d..548d263b1ad0 100644
--- a/drivers/power/collie_battery.c
+++ b/drivers/power/collie_battery.c
@@ -295,7 +295,7 @@ static struct {
static int collie_bat_suspend(struct ucb1x00_dev *dev, pm_message_t state)
{
/* flush all pending status updates */
- flush_scheduled_work();
+ flush_work_sync(&bat_work);
return 0;
}
@@ -362,7 +362,7 @@ err_psy_reg_bu:
err_psy_reg_main:
/* see comment in collie_bat_remove */
- flush_scheduled_work();
+ cancel_work_sync(&bat_work);
i--;
err_gpio:
@@ -382,12 +382,11 @@ static void __devexit collie_bat_remove(struct ucb1x00_dev *dev)
power_supply_unregister(&collie_bat_main.psy);
/*
- * now flush all pending work.
- * we won't get any more schedules, since all
- * sources (isr and external_power_changed)
- * are unregistered now.
+ * Now cancel the bat_work. We won't get any more schedules,
+ * since all sources (isr and external_power_changed) are
+ * unregistered now.
*/
- flush_scheduled_work();
+ cancel_work_sync(&bat_work);
for (i = ARRAY_SIZE(gpios) - 1; i >= 0; i--)
gpio_free(gpios[i].gpio);
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index b3c01c16a164..e534290f3256 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -212,7 +212,7 @@ static int ds2760_battery_read_status(struct ds2760_device_info *di)
if (di->rem_capacity > 100)
di->rem_capacity = 100;
- if (di->current_uA >= 100L)
+ if (di->current_uA < -100L)
di->life_sec = -((di->accum_current_uAh - di->empty_uAh) * 36L)
/ (di->current_uA / 100L);
else
@@ -580,10 +580,8 @@ static int ds2760_battery_remove(struct platform_device *pdev)
{
struct ds2760_device_info *di = platform_get_drvdata(pdev);
- cancel_rearming_delayed_workqueue(di->monitor_wqueue,
- &di->monitor_work);
- cancel_rearming_delayed_workqueue(di->monitor_wqueue,
- &di->set_charged_work);
+ cancel_delayed_work_sync(&di->monitor_work);
+ cancel_delayed_work_sync(&di->set_charged_work);
destroy_workqueue(di->monitor_wqueue);
power_supply_unregister(&di->bat);
kfree(di);
diff --git a/drivers/power/gpio-charger.c b/drivers/power/gpio-charger.c
new file mode 100644
index 000000000000..25b88ac1d44c
--- /dev/null
+++ b/drivers/power/gpio-charger.c
@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
+ * Driver for chargers which report their online status through a GPIO pin
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+
+#include <linux/power/gpio-charger.h>
+
+struct gpio_charger {
+ const struct gpio_charger_platform_data *pdata;
+ unsigned int irq;
+
+ struct power_supply charger;
+};
+
+static irqreturn_t gpio_charger_irq(int irq, void *devid)
+{
+ struct power_supply *charger = devid;
+
+ power_supply_changed(charger);
+
+ return IRQ_HANDLED;
+}
+
+static inline struct gpio_charger *psy_to_gpio_charger(struct power_supply *psy)
+{
+ return container_of(psy, struct gpio_charger, charger);
+}
+
+static int gpio_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct gpio_charger *gpio_charger = psy_to_gpio_charger(psy);
+ const struct gpio_charger_platform_data *pdata = gpio_charger->pdata;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = gpio_get_value(pdata->gpio);
+ val->intval ^= pdata->gpio_active_low;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property gpio_charger_properties[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static int __devinit gpio_charger_probe(struct platform_device *pdev)
+{
+ const struct gpio_charger_platform_data *pdata = pdev->dev.platform_data;
+ struct gpio_charger *gpio_charger;
+ struct power_supply *charger;
+ int ret;
+ int irq;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "No platform data\n");
+ return -EINVAL;
+ }
+
+ if (!gpio_is_valid(pdata->gpio)) {
+ dev_err(&pdev->dev, "Invalid gpio pin\n");
+ return -EINVAL;
+ }
+
+ gpio_charger = kzalloc(sizeof(*gpio_charger), GFP_KERNEL);
+ if (!gpio_charger) {
+ dev_err(&pdev->dev, "Failed to alloc driver structure\n");
+ return -ENOMEM;
+ }
+
+ charger = &gpio_charger->charger;
+
+ charger->name = pdata->name ? pdata->name : "gpio-charger";
+ charger->type = pdata->type;
+ charger->properties = gpio_charger_properties;
+ charger->num_properties = ARRAY_SIZE(gpio_charger_properties);
+ charger->get_property = gpio_charger_get_property;
+ charger->supplied_to = pdata->supplied_to;
+ charger->num_supplicants = pdata->num_supplicants;
+
+ ret = gpio_request(pdata->gpio, dev_name(&pdev->dev));
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to request gpio pin: %d\n", ret);
+ goto err_free;
+ }
+ ret = gpio_direction_input(pdata->gpio);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to set gpio to input: %d\n", ret);
+ goto err_gpio_free;
+ }
+
+ gpio_charger->pdata = pdata;
+
+ ret = power_supply_register(&pdev->dev, charger);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to register power supply: %d\n",
+ ret);
+ goto err_gpio_free;
+ }
+
+ irq = gpio_to_irq(pdata->gpio);
+ if (irq > 0) {
+ ret = request_any_context_irq(irq, gpio_charger_irq,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ dev_name(&pdev->dev), charger);
+ if (ret)
+ dev_warn(&pdev->dev, "Failed to request irq: %d\n", ret);
+ else
+ gpio_charger->irq = irq;
+ }
+
+ platform_set_drvdata(pdev, gpio_charger);
+
+ return 0;
+
+err_gpio_free:
+ gpio_free(pdata->gpio);
+err_free:
+ kfree(gpio_charger);
+ return ret;
+}
+
+static int __devexit gpio_charger_remove(struct platform_device *pdev)
+{
+ struct gpio_charger *gpio_charger = platform_get_drvdata(pdev);
+
+ if (gpio_charger->irq)
+ free_irq(gpio_charger->irq, &gpio_charger->charger);
+
+ power_supply_unregister(&gpio_charger->charger);
+
+ gpio_free(gpio_charger->pdata->gpio);
+
+ platform_set_drvdata(pdev, NULL);
+ kfree(gpio_charger);
+
+ return 0;
+}
+
+static struct platform_driver gpio_charger_driver = {
+ .probe = gpio_charger_probe,
+ .remove = __devexit_p(gpio_charger_remove),
+ .driver = {
+ .name = "gpio-charger",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init gpio_charger_init(void)
+{
+ return platform_driver_register(&gpio_charger_driver);
+}
+module_init(gpio_charger_init);
+
+static void __exit gpio_charger_exit(void)
+{
+ platform_driver_unregister(&gpio_charger_driver);
+}
+module_exit(gpio_charger_exit);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("Driver for chargers which report their online status through a GPIO");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:gpio-charger");
diff --git a/drivers/power/intel_mid_battery.c b/drivers/power/intel_mid_battery.c
index 2a10cd361181..bce3a01da2f0 100644
--- a/drivers/power/intel_mid_battery.c
+++ b/drivers/power/intel_mid_battery.c
@@ -730,8 +730,7 @@ static __devinit int probe(int irq, struct device *dev)
power_reg_failed_1:
power_supply_unregister(&pbi->batt);
power_reg_failed:
- cancel_rearming_delayed_workqueue(pbi->monitor_wqueue,
- &pbi->monitor_battery);
+ cancel_delayed_work_sync(&pbi->monitor_battery);
requestirq_failed:
destroy_workqueue(pbi->monitor_wqueue);
wqueue_failed:
@@ -760,14 +759,13 @@ static int __devexit platform_pmic_battery_remove(struct platform_device *pdev)
struct pmic_power_module_info *pbi = dev_get_drvdata(&pdev->dev);
free_irq(pbi->irq, pbi);
- cancel_rearming_delayed_workqueue(pbi->monitor_wqueue,
- &pbi->monitor_battery);
+ cancel_delayed_work_sync(&pbi->monitor_battery);
destroy_workqueue(pbi->monitor_wqueue);
power_supply_unregister(&pbi->usb);
power_supply_unregister(&pbi->batt);
- flush_scheduled_work();
+ cancel_work_sync(&pbi->handler);
kfree(pbi);
return 0;
}
diff --git a/drivers/power/isp1704_charger.c b/drivers/power/isp1704_charger.c
index 72512185f3e2..2ad9b14a5ce3 100644
--- a/drivers/power/isp1704_charger.c
+++ b/drivers/power/isp1704_charger.c
@@ -59,11 +59,61 @@ struct isp1704_charger {
struct notifier_block nb;
struct work_struct work;
- char model[7];
+ /* properties */
+ char model[8];
unsigned present:1;
+ unsigned online:1;
+ unsigned current_max;
+
+ /* temp storage variables */
+ unsigned long event;
+ unsigned max_power;
};
/*
+ * Determine is the charging port DCP (dedicated charger) or CDP (Host/HUB
+ * chargers).
+ *
+ * REVISIT: The method is defined in Battery Charging Specification and is
+ * applicable to any ULPI transceiver. Nothing isp170x specific here.
+ */
+static inline int isp1704_charger_type(struct isp1704_charger *isp)
+{
+ u8 reg;
+ u8 func_ctrl;
+ u8 otg_ctrl;
+ int type = POWER_SUPPLY_TYPE_USB_DCP;
+
+ func_ctrl = otg_io_read(isp->otg, ULPI_FUNC_CTRL);
+ otg_ctrl = otg_io_read(isp->otg, ULPI_OTG_CTRL);
+
+ /* disable pulldowns */
+ reg = ULPI_OTG_CTRL_DM_PULLDOWN | ULPI_OTG_CTRL_DP_PULLDOWN;
+ otg_io_write(isp->otg, ULPI_CLR(ULPI_OTG_CTRL), reg);
+
+ /* full speed */
+ otg_io_write(isp->otg, ULPI_CLR(ULPI_FUNC_CTRL),
+ ULPI_FUNC_CTRL_XCVRSEL_MASK);
+ otg_io_write(isp->otg, ULPI_SET(ULPI_FUNC_CTRL),
+ ULPI_FUNC_CTRL_FULL_SPEED);
+
+ /* Enable strong pull-up on DP (1.5K) and reset */
+ reg = ULPI_FUNC_CTRL_TERMSELECT | ULPI_FUNC_CTRL_RESET;
+ otg_io_write(isp->otg, ULPI_SET(ULPI_FUNC_CTRL), reg);
+ usleep_range(1000, 2000);
+
+ reg = otg_io_read(isp->otg, ULPI_DEBUG);
+ if ((reg & 3) != 3)
+ type = POWER_SUPPLY_TYPE_USB_CDP;
+
+ /* recover original state */
+ otg_io_write(isp->otg, ULPI_FUNC_CTRL, func_ctrl);
+ otg_io_write(isp->otg, ULPI_OTG_CTRL, otg_ctrl);
+
+ return type;
+}
+
+/*
* ISP1704 detects PS/2 adapters as charger. To make sure the detected charger
* is actually a dedicated charger, the following steps need to be taken.
*/
@@ -127,16 +177,19 @@ static inline int isp1704_charger_verify(struct isp1704_charger *isp)
static inline int isp1704_charger_detect(struct isp1704_charger *isp)
{
unsigned long timeout;
- u8 r;
+ u8 pwr_ctrl;
int ret = 0;
+ pwr_ctrl = otg_io_read(isp->otg, ISP1704_PWR_CTRL);
+
/* set SW control bit in PWR_CTRL register */
otg_io_write(isp->otg, ISP1704_PWR_CTRL,
ISP1704_PWR_CTRL_SWCTRL);
/* enable manual charger detection */
- r = (ISP1704_PWR_CTRL_SWCTRL | ISP1704_PWR_CTRL_DPVSRC_EN);
- otg_io_write(isp->otg, ULPI_SET(ISP1704_PWR_CTRL), r);
+ otg_io_write(isp->otg, ULPI_SET(ISP1704_PWR_CTRL),
+ ISP1704_PWR_CTRL_SWCTRL
+ | ISP1704_PWR_CTRL_DPVSRC_EN);
usleep_range(1000, 2000);
timeout = jiffies + msecs_to_jiffies(300);
@@ -147,7 +200,10 @@ static inline int isp1704_charger_detect(struct isp1704_charger *isp)
ret = isp1704_charger_verify(isp);
break;
}
- } while (!time_after(jiffies, timeout));
+ } while (!time_after(jiffies, timeout) && isp->online);
+
+ /* recover original state */
+ otg_io_write(isp->otg, ISP1704_PWR_CTRL, pwr_ctrl);
return ret;
}
@@ -155,52 +211,92 @@ static inline int isp1704_charger_detect(struct isp1704_charger *isp)
static void isp1704_charger_work(struct work_struct *data)
{
int detect;
+ unsigned long event;
+ unsigned power;
struct isp1704_charger *isp =
container_of(data, struct isp1704_charger, work);
+ static DEFINE_MUTEX(lock);
- /*
- * FIXME Only supporting dedicated chargers even though isp1704 can
- * detect HUB and HOST chargers. If the device has already been
- * enumerated, the detection will break the connection.
- */
- if (isp->otg->state != OTG_STATE_B_IDLE)
- return;
+ event = isp->event;
+ power = isp->max_power;
- /* disable data pullups */
- if (isp->otg->gadget)
- usb_gadget_disconnect(isp->otg->gadget);
+ mutex_lock(&lock);
+
+ switch (event) {
+ case USB_EVENT_VBUS:
+ isp->online = true;
+
+ /* detect charger */
+ detect = isp1704_charger_detect(isp);
+
+ if (detect) {
+ isp->present = detect;
+ isp->psy.type = isp1704_charger_type(isp);
+ }
- /* detect charger */
- detect = isp1704_charger_detect(isp);
- if (detect) {
- isp->present = detect;
- power_supply_changed(&isp->psy);
+ switch (isp->psy.type) {
+ case POWER_SUPPLY_TYPE_USB_DCP:
+ isp->current_max = 1800;
+ break;
+ case POWER_SUPPLY_TYPE_USB_CDP:
+ /*
+ * Only 500mA here or high speed chirp
+ * handshaking may break
+ */
+ isp->current_max = 500;
+ /* FALLTHROUGH */
+ case POWER_SUPPLY_TYPE_USB:
+ default:
+ /* enable data pullups */
+ if (isp->otg->gadget)
+ usb_gadget_connect(isp->otg->gadget);
+ }
+ break;
+ case USB_EVENT_NONE:
+ isp->online = false;
+ isp->current_max = 0;
+ isp->present = 0;
+ isp->current_max = 0;
+ isp->psy.type = POWER_SUPPLY_TYPE_USB;
+
+ /*
+ * Disable data pullups. We need to prevent the controller from
+ * enumerating.
+ *
+ * FIXME: This is here to allow charger detection with Host/HUB
+ * chargers. The pullups may be enabled elsewhere, so this can
+ * not be the final solution.
+ */
+ if (isp->otg->gadget)
+ usb_gadget_disconnect(isp->otg->gadget);
+ break;
+ case USB_EVENT_ENUMERATED:
+ if (isp->present)
+ isp->current_max = 1800;
+ else
+ isp->current_max = power;
+ break;
+ default:
+ goto out;
}
- /* enable data pullups */
- if (isp->otg->gadget)
- usb_gadget_connect(isp->otg->gadget);
+ power_supply_changed(&isp->psy);
+out:
+ mutex_unlock(&lock);
}
static int isp1704_notifier_call(struct notifier_block *nb,
- unsigned long event, void *unused)
+ unsigned long event, void *power)
{
struct isp1704_charger *isp =
container_of(nb, struct isp1704_charger, nb);
- switch (event) {
- case USB_EVENT_VBUS:
- schedule_work(&isp->work);
- break;
- case USB_EVENT_NONE:
- if (isp->present) {
- isp->present = 0;
- power_supply_changed(&isp->psy);
- }
- break;
- default:
- return NOTIFY_DONE;
- }
+ isp->event = event;
+
+ if (power)
+ isp->max_power = *((unsigned *)power);
+
+ schedule_work(&isp->work);
return NOTIFY_OK;
}
@@ -216,6 +312,12 @@ static int isp1704_charger_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_PRESENT:
val->intval = isp->present;
break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = isp->online;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ val->intval = isp->current_max;
+ break;
case POWER_SUPPLY_PROP_MODEL_NAME:
val->strval = isp->model;
break;
@@ -230,6 +332,8 @@ static int isp1704_charger_get_property(struct power_supply *psy,
static enum power_supply_property power_props[] = {
POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_CURRENT_MAX,
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_MANUFACTURER,
};
@@ -287,13 +391,13 @@ static int __devinit isp1704_charger_probe(struct platform_device *pdev)
if (!isp->otg)
goto fail0;
+ isp->dev = &pdev->dev;
+ platform_set_drvdata(pdev, isp);
+
ret = isp1704_test_ulpi(isp);
if (ret < 0)
goto fail1;
- isp->dev = &pdev->dev;
- platform_set_drvdata(pdev, isp);
-
isp->psy.name = "isp1704";
isp->psy.type = POWER_SUPPLY_TYPE_USB;
isp->psy.properties = power_props;
@@ -318,6 +422,23 @@ static int __devinit isp1704_charger_probe(struct platform_device *pdev)
dev_info(isp->dev, "registered with product id %s\n", isp->model);
+ /*
+ * Taking over the D+ pullup.
+ *
+ * FIXME: The device will be disconnected if it was already
+ * enumerated. The charger driver should be always loaded before any
+ * gadget is loaded.
+ */
+ if (isp->otg->gadget)
+ usb_gadget_disconnect(isp->otg->gadget);
+
+ /* Detect charger if VBUS is valid (the cable was already plugged). */
+ ret = otg_io_read(isp->otg, ULPI_USB_INT_STS);
+ if ((ret & ULPI_INT_VBUS_VALID) && !isp->otg->default_a) {
+ isp->event = USB_EVENT_VBUS;
+ schedule_work(&isp->work);
+ }
+
return 0;
fail2:
power_supply_unregister(&isp->psy);
diff --git a/drivers/power/jz4740-battery.c b/drivers/power/jz4740-battery.c
index a8108a73593e..02414db6a94c 100644
--- a/drivers/power/jz4740-battery.c
+++ b/drivers/power/jz4740-battery.c
@@ -19,6 +19,7 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
+#include <linux/io.h>
#include <linux/delay.h>
#include <linux/gpio.h>
@@ -47,6 +48,8 @@ struct jz_battery {
struct power_supply battery;
struct delayed_work work;
+
+ struct mutex lock;
};
static inline struct jz_battery *psy_to_jz_battery(struct power_supply *psy)
@@ -68,6 +71,8 @@ static long jz_battery_read_voltage(struct jz_battery *battery)
unsigned long val;
long voltage;
+ mutex_lock(&battery->lock);
+
INIT_COMPLETION(battery->read_completion);
enable_irq(battery->irq);
@@ -91,6 +96,8 @@ static long jz_battery_read_voltage(struct jz_battery *battery)
battery->cell->disable(battery->pdev);
disable_irq(battery->irq);
+ mutex_unlock(&battery->lock);
+
return voltage;
}
@@ -240,6 +247,11 @@ static int __devinit jz_battery_probe(struct platform_device *pdev)
struct jz_battery *jz_battery;
struct power_supply *battery;
+ if (!pdata) {
+ dev_err(&pdev->dev, "No platform_data supplied\n");
+ return -ENXIO;
+ }
+
jz_battery = kzalloc(sizeof(*jz_battery), GFP_KERNEL);
if (!jz_battery) {
dev_err(&pdev->dev, "Failed to allocate driver structure\n");
@@ -291,6 +303,7 @@ static int __devinit jz_battery_probe(struct platform_device *pdev)
jz_battery->pdev = pdev;
init_completion(&jz_battery->read_completion);
+ mutex_init(&jz_battery->lock);
INIT_DELAYED_WORK(&jz_battery->work, jz_battery_work);
diff --git a/drivers/power/max17042_battery.c b/drivers/power/max17042_battery.c
new file mode 100644
index 000000000000..c5c8805156cb
--- /dev/null
+++ b/drivers/power/max17042_battery.c
@@ -0,0 +1,239 @@
+/*
+ * Fuel gauge driver for Maxim 17042 / 8966 / 8997
+ * Note that Maxim 8966 and 8997 are mfd and this is its subdevice.
+ *
+ * Copyright (C) 2011 Samsung Electronics
+ * MyungJoo Ham <myungjoo.ham@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * This driver is based on max17040_battery.c
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/power_supply.h>
+#include <linux/power/max17042_battery.h>
+
+enum max17042_register {
+ MAX17042_STATUS = 0x00,
+ MAX17042_VALRT_Th = 0x01,
+ MAX17042_TALRT_Th = 0x02,
+ MAX17042_SALRT_Th = 0x03,
+ MAX17042_AtRate = 0x04,
+ MAX17042_RepCap = 0x05,
+ MAX17042_RepSOC = 0x06,
+ MAX17042_Age = 0x07,
+ MAX17042_TEMP = 0x08,
+ MAX17042_VCELL = 0x09,
+ MAX17042_Current = 0x0A,
+ MAX17042_AvgCurrent = 0x0B,
+ MAX17042_Qresidual = 0x0C,
+ MAX17042_SOC = 0x0D,
+ MAX17042_AvSOC = 0x0E,
+ MAX17042_RemCap = 0x0F,
+ MAX17402_FullCAP = 0x10,
+ MAX17042_TTE = 0x11,
+ MAX17042_V_empty = 0x12,
+
+ MAX17042_RSLOW = 0x14,
+
+ MAX17042_AvgTA = 0x16,
+ MAX17042_Cycles = 0x17,
+ MAX17042_DesignCap = 0x18,
+ MAX17042_AvgVCELL = 0x19,
+ MAX17042_MinMaxTemp = 0x1A,
+ MAX17042_MinMaxVolt = 0x1B,
+ MAX17042_MinMaxCurr = 0x1C,
+ MAX17042_CONFIG = 0x1D,
+ MAX17042_ICHGTerm = 0x1E,
+ MAX17042_AvCap = 0x1F,
+ MAX17042_ManName = 0x20,
+ MAX17042_DevName = 0x21,
+ MAX17042_DevChem = 0x22,
+
+ MAX17042_TempNom = 0x24,
+ MAX17042_TempCold = 0x25,
+ MAX17042_TempHot = 0x26,
+ MAX17042_AIN = 0x27,
+ MAX17042_LearnCFG = 0x28,
+ MAX17042_SHFTCFG = 0x29,
+ MAX17042_RelaxCFG = 0x2A,
+ MAX17042_MiscCFG = 0x2B,
+ MAX17042_TGAIN = 0x2C,
+ MAx17042_TOFF = 0x2D,
+ MAX17042_CGAIN = 0x2E,
+ MAX17042_COFF = 0x2F,
+
+ MAX17042_Q_empty = 0x33,
+ MAX17042_T_empty = 0x34,
+
+ MAX17042_RCOMP0 = 0x38,
+ MAX17042_TempCo = 0x39,
+ MAX17042_Rx = 0x3A,
+ MAX17042_T_empty0 = 0x3B,
+ MAX17042_TaskPeriod = 0x3C,
+ MAX17042_FSTAT = 0x3D,
+
+ MAX17042_SHDNTIMER = 0x3F,
+
+ MAX17042_VFRemCap = 0x4A,
+
+ MAX17042_QH = 0x4D,
+ MAX17042_QL = 0x4E,
+};
+
+struct max17042_chip {
+ struct i2c_client *client;
+ struct power_supply battery;
+ struct max17042_platform_data *pdata;
+};
+
+static int max17042_write_reg(struct i2c_client *client, u8 reg, u16 value)
+{
+ int ret = i2c_smbus_write_word_data(client, reg, value);
+
+ if (ret < 0)
+ dev_err(&client->dev, "%s: err %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int max17042_read_reg(struct i2c_client *client, u8 reg)
+{
+ int ret = i2c_smbus_read_word_data(client, reg);
+
+ if (ret < 0)
+ dev_err(&client->dev, "%s: err %d\n", __func__, ret);
+
+ return ret;
+}
+
+static enum power_supply_property max17042_battery_props[] = {
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_CAPACITY,
+};
+
+static int max17042_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max17042_chip *chip = container_of(psy,
+ struct max17042_chip, battery);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = max17042_read_reg(chip->client,
+ MAX17042_VCELL) * 83; /* 1000 / 12 = 83 */
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ val->intval = max17042_read_reg(chip->client,
+ MAX17042_AvgVCELL) * 83;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = max17042_read_reg(chip->client,
+ MAX17042_SOC) / 256;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int __devinit max17042_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct max17042_chip *chip;
+ int ret;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA))
+ 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 = "max17042_battery";
+ chip->battery.type = POWER_SUPPLY_TYPE_BATTERY;
+ chip->battery.get_property = max17042_get_property;
+ chip->battery.properties = max17042_battery_props;
+ chip->battery.num_properties = ARRAY_SIZE(max17042_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;
+ }
+
+ if (!chip->pdata->enable_current_sense) {
+ max17042_write_reg(client, MAX17042_CGAIN, 0x0000);
+ max17042_write_reg(client, MAX17042_MiscCFG, 0x0003);
+ max17042_write_reg(client, MAX17042_LearnCFG, 0x0007);
+ }
+
+ return 0;
+}
+
+static int __devexit max17042_remove(struct i2c_client *client)
+{
+ struct max17042_chip *chip = i2c_get_clientdata(client);
+
+ power_supply_unregister(&chip->battery);
+ i2c_set_clientdata(client, NULL);
+ kfree(chip);
+ return 0;
+}
+
+static const struct i2c_device_id max17042_id[] = {
+ { "max17042", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max17042_id);
+
+static struct i2c_driver max17042_i2c_driver = {
+ .driver = {
+ .name = "max17042",
+ },
+ .probe = max17042_probe,
+ .remove = __devexit_p(max17042_remove),
+ .id_table = max17042_id,
+};
+
+static int __init max17042_init(void)
+{
+ return i2c_add_driver(&max17042_i2c_driver);
+}
+module_init(max17042_init);
+
+static void __exit max17042_exit(void)
+{
+ i2c_del_driver(&max17042_i2c_driver);
+}
+module_exit(max17042_exit);
+
+MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
+MODULE_DESCRIPTION("MAX17042 Fuel Gauge");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c
index 5bc1dcf7785e..0b0ff3a936a6 100644
--- a/drivers/power/olpc_battery.c
+++ b/drivers/power/olpc_battery.c
@@ -201,6 +201,72 @@ static int olpc_bat_get_tech(union power_supply_propval *val)
return ret;
}
+static int olpc_bat_get_charge_full_design(union power_supply_propval *val)
+{
+ uint8_t ec_byte;
+ union power_supply_propval tech;
+ int ret, mfr;
+
+ ret = olpc_bat_get_tech(&tech);
+ if (ret)
+ return ret;
+
+ ec_byte = BAT_ADDR_MFR_TYPE;
+ ret = olpc_ec_cmd(EC_BAT_EEPROM, &ec_byte, 1, &ec_byte, 1);
+ if (ret)
+ return ret;
+
+ mfr = ec_byte >> 4;
+
+ switch (tech.intval) {
+ case POWER_SUPPLY_TECHNOLOGY_NiMH:
+ switch (mfr) {
+ case 1: /* Gold Peak */
+ val->intval = 3000000*.8;
+ break;
+ default:
+ return -EIO;
+ }
+ break;
+
+ case POWER_SUPPLY_TECHNOLOGY_LiFe:
+ switch (mfr) {
+ case 1: /* Gold Peak */
+ val->intval = 2800000;
+ break;
+ case 2: /* BYD */
+ val->intval = 3100000;
+ break;
+ default:
+ return -EIO;
+ }
+ break;
+
+ default:
+ return -EIO;
+ }
+
+ return ret;
+}
+
+static int olpc_bat_get_charge_now(union power_supply_propval *val)
+{
+ uint8_t soc;
+ union power_supply_propval full;
+ int ret;
+
+ ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &soc, 1);
+ if (ret)
+ return ret;
+
+ ret = olpc_bat_get_charge_full_design(&full);
+ if (ret)
+ return ret;
+
+ val->intval = soc * (full.intval / 100);
+ return 0;
+}
+
/*********************************************************************
* Battery properties
*********************************************************************/
@@ -267,6 +333,7 @@ static int olpc_bat_get_property(struct power_supply *psy,
return ret;
break;
case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
ret = olpc_ec_cmd(EC_BAT_VOLTAGE, NULL, 0, (void *)&ec_word, 2);
if (ret)
return ret;
@@ -274,6 +341,7 @@ static int olpc_bat_get_property(struct power_supply *psy,
val->intval = (s16)be16_to_cpu(ec_word) * 9760L / 32;
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
ret = olpc_ec_cmd(EC_BAT_CURRENT, NULL, 0, (void *)&ec_word, 2);
if (ret)
return ret;
@@ -294,6 +362,16 @@ static int olpc_bat_get_property(struct power_supply *psy,
else
val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ ret = olpc_bat_get_charge_full_design(val);
+ if (ret)
+ return ret;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ ret = olpc_bat_get_charge_now(val);
+ if (ret)
+ return ret;
+ break;
case POWER_SUPPLY_PROP_TEMP:
ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2);
if (ret)
@@ -331,16 +409,20 @@ static int olpc_bat_get_property(struct power_supply *psy,
return ret;
}
-static enum power_supply_property olpc_bat_props[] = {
+static enum power_supply_property olpc_xo1_bat_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_CHARGE_TYPE,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_TEMP_AMBIENT,
POWER_SUPPLY_PROP_MANUFACTURER,
@@ -348,6 +430,27 @@ static enum power_supply_property olpc_bat_props[] = {
POWER_SUPPLY_PROP_CHARGE_COUNTER,
};
+/* XO-1.5 does not have ambient temperature property */
+static enum power_supply_property olpc_xo15_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
+ POWER_SUPPLY_PROP_CHARGE_COUNTER,
+};
+
/* EEPROM reading goes completely around the power_supply API, sadly */
#define EEPROM_START 0x20
@@ -419,8 +522,6 @@ static struct device_attribute olpc_bat_error = {
static struct platform_device *bat_pdev;
static struct power_supply olpc_bat = {
- .properties = olpc_bat_props,
- .num_properties = ARRAY_SIZE(olpc_bat_props),
.get_property = olpc_bat_get_property,
.use_for_apm = 1,
};
@@ -466,6 +567,13 @@ static int __init olpc_bat_init(void)
goto ac_failed;
olpc_bat.name = bat_pdev->name;
+ if (olpc_board_at_least(olpc_board_pre(0xd0))) { /* XO-1.5 */
+ olpc_bat.properties = olpc_xo15_bat_props;
+ olpc_bat.num_properties = ARRAY_SIZE(olpc_xo15_bat_props);
+ } else { /* XO-1 */
+ olpc_bat.properties = olpc_xo1_bat_props;
+ olpc_bat.num_properties = ARRAY_SIZE(olpc_xo1_bat_props);
+ }
ret = power_supply_register(&bat_pdev->dev, &olpc_bat);
if (ret)
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index 91606bb55318..970f7335d3a7 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -190,10 +190,10 @@ int power_supply_register(struct device *parent, struct power_supply *psy)
goto success;
create_triggers_failed:
- device_unregister(psy->dev);
+ device_del(dev);
kobject_set_name_failed:
device_add_failed:
- kfree(dev);
+ put_device(dev);
success:
return rc;
}
@@ -201,7 +201,7 @@ EXPORT_SYMBOL_GPL(power_supply_register);
void power_supply_unregister(struct power_supply *psy)
{
- flush_scheduled_work();
+ cancel_work_sync(&psy->changed_work);
power_supply_remove_triggers(psy);
device_unregister(psy->dev);
}
diff --git a/drivers/power/s3c_adc_battery.c b/drivers/power/s3c_adc_battery.c
index fe16b482e912..4255f2358b13 100644
--- a/drivers/power/s3c_adc_battery.c
+++ b/drivers/power/s3c_adc_battery.c
@@ -1,5 +1,5 @@
/*
- * iPAQ h1930/h1940/rx1950 battery controler driver
+ * iPAQ h1930/h1940/rx1950 battery controller driver
* Copyright (c) Vasily Khoruzhick
* Based on h1940_battery.c by Arnaud Patard
*
@@ -112,6 +112,13 @@ static int calc_full_volt(int volt_val, int cur_val, int impedance)
return volt_val + cur_val * impedance / 1000;
}
+static int charge_finished(struct s3c_adc_bat *bat)
+{
+ return bat->pdata->gpio_inverted ?
+ !gpio_get_value(bat->pdata->gpio_charge_finished) :
+ gpio_get_value(bat->pdata->gpio_charge_finished);
+}
+
static int s3c_adc_bat_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@@ -140,7 +147,7 @@ static int s3c_adc_bat_get_property(struct power_supply *psy,
if (bat->cable_plugged &&
((bat->pdata->gpio_charge_finished < 0) ||
- !gpio_get_value(bat->pdata->gpio_charge_finished))) {
+ !charge_finished(bat))) {
lut = bat->pdata->lut_acin;
lut_size = bat->pdata->lut_acin_cnt;
}
@@ -236,8 +243,7 @@ static void s3c_adc_bat_work(struct work_struct *work)
}
} else {
if ((bat->pdata->gpio_charge_finished >= 0) && is_plugged) {
- is_charged = gpio_get_value(
- main_bat.pdata->gpio_charge_finished);
+ is_charged = charge_finished(&main_bat);
if (is_charged) {
if (bat->pdata->disable_charger)
bat->pdata->disable_charger();
@@ -427,5 +433,5 @@ static void __exit s3c_adc_bat_exit(void)
module_exit(s3c_adc_bat_exit);
MODULE_AUTHOR("Vasily Khoruzhick <anarsoul@gmail.com>");
-MODULE_DESCRIPTION("iPAQ H1930/H1940/RX1950 battery controler driver");
+MODULE_DESCRIPTION("iPAQ H1930/H1940/RX1950 battery controller driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/power/tosa_battery.c b/drivers/power/tosa_battery.c
index ee04936b2db5..53f0d3524fcd 100644
--- a/drivers/power/tosa_battery.c
+++ b/drivers/power/tosa_battery.c
@@ -332,7 +332,7 @@ static struct {
static int tosa_bat_suspend(struct platform_device *dev, pm_message_t state)
{
/* flush all pending status updates */
- flush_scheduled_work();
+ flush_work_sync(&bat_work);
return 0;
}
@@ -422,7 +422,7 @@ err_psy_reg_jacket:
err_psy_reg_main:
/* see comment in tosa_bat_remove */
- flush_scheduled_work();
+ cancel_work_sync(&bat_work);
i--;
err_gpio:
@@ -445,12 +445,11 @@ static int __devexit tosa_bat_remove(struct platform_device *dev)
power_supply_unregister(&tosa_bat_main.psy);
/*
- * now flush all pending work.
- * we won't get any more schedules, since all
- * sources (isr and external_power_changed)
- * are unregistered now.
+ * Now cancel the bat_work. We won't get any more schedules,
+ * since all sources (isr and external_power_changed) are
+ * unregistered now.
*/
- flush_scheduled_work();
+ cancel_work_sync(&bat_work);
for (i = ARRAY_SIZE(gpios) - 1; i >= 0; i--)
gpio_free(gpios[i].gpio);
diff --git a/drivers/power/wm97xx_battery.c b/drivers/power/wm97xx_battery.c
index 5071d85ec12d..156559e56fa5 100644
--- a/drivers/power/wm97xx_battery.c
+++ b/drivers/power/wm97xx_battery.c
@@ -147,7 +147,7 @@ static irqreturn_t wm97xx_chrg_irq(int irq, void *data)
#ifdef CONFIG_PM
static int wm97xx_bat_suspend(struct device *dev)
{
- flush_scheduled_work();
+ flush_work_sync(&bat_work);
return 0;
}
@@ -273,7 +273,7 @@ static int __devexit wm97xx_bat_remove(struct platform_device *dev)
free_irq(gpio_to_irq(pdata->charge_gpio), dev);
gpio_free(pdata->charge_gpio);
}
- flush_scheduled_work();
+ cancel_work_sync(&bat_work);
power_supply_unregister(&bat_ps);
kfree(prop);
return 0;
diff --git a/drivers/power/z2_battery.c b/drivers/power/z2_battery.c
index 85064a9f649e..e5ed52d71937 100644
--- a/drivers/power/z2_battery.c
+++ b/drivers/power/z2_battery.c
@@ -254,7 +254,7 @@ static int __devexit z2_batt_remove(struct i2c_client *client)
struct z2_charger *charger = i2c_get_clientdata(client);
struct z2_battery_info *info = charger->info;
- flush_scheduled_work();
+ cancel_work_sync(&charger->bat_work);
power_supply_unregister(&charger->batt_ps);
kfree(charger->batt_ps.properties);
@@ -271,7 +271,9 @@ static int __devexit z2_batt_remove(struct i2c_client *client)
#ifdef CONFIG_PM
static int z2_batt_suspend(struct i2c_client *client, pm_message_t state)
{
- flush_scheduled_work();
+ struct z2_charger *charger = i2c_get_clientdata(client);
+
+ flush_work_sync(&charger->bat_work);
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-30 19:50:03 +0100