samsung update 1

1 files changed, 395 insertions, 0 deletions

diff --git a/drivers/battery/sec_charger.c b/drivers/battery/sec_charger.c
new file mode 100644
index 0000000..9947027
--- /dev/null
+++ b/drivers/battery/sec_charger.c
@@ -0,0 +1,395 @@
+/*
+ *  sec_charger.c
+ *  Samsung Mobile Charger Driver
+ *
+ *  Copyright (C) 2012 Samsung Electronics
+ *
+ *
+ * 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.
+ */
+
+#define DEBUG
+
+#include <linux/battery/sec_charger.h>
+
+static int sec_chg_get_property(struct power_supply *psy,
+			    enum power_supply_property psp,
+			    union power_supply_propval *val)
+{
+	struct sec_charger_info *charger =
+		container_of(psy, struct sec_charger_info, psy_chg);
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_ONLINE:
+		val->intval = charger->charging_current ? 1 : 0;
+		break;
+	case POWER_SUPPLY_PROP_STATUS:
+	case POWER_SUPPLY_PROP_HEALTH:
+	case POWER_SUPPLY_PROP_CURRENT_NOW:
+		if (!sec_hal_chg_get_property(charger->client, psp, val))
+			return -EINVAL;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int sec_chg_set_property(struct power_supply *psy,
+			    enum power_supply_property psp,
+			    const union power_supply_propval *val)
+{
+	struct sec_charger_info *charger =
+		container_of(psy, struct sec_charger_info, psy_chg);
+
+	switch (psp) {
+	/* val->intval : type */
+	case POWER_SUPPLY_PROP_ONLINE:
+		charger->cable_type = val->intval;
+		if (val->intval == POWER_SUPPLY_TYPE_BATTERY)
+			charger->is_charging = false;
+		else
+			charger->is_charging = true;
+
+		/* current setting */
+		charger->charging_current =
+			charger->pdata->charging_current[
+			val->intval].fast_charging_current;
+
+		if (!sec_hal_chg_set_property(charger->client, psp, val))
+			return -EINVAL;
+		break;
+	/* val->intval : charging current */
+	case POWER_SUPPLY_PROP_CURRENT_NOW:
+		charger->charging_current = val->intval;
+
+		if (!sec_hal_chg_set_property(charger->client, psp, val))
+			return -EINVAL;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static void sec_chg_isr_work(struct work_struct *work)
+{
+	struct sec_charger_info *charger =
+		container_of(work, struct sec_charger_info, isr_work.work);
+	union power_supply_propval val;
+
+	dev_info(&charger->client->dev,
+		"%s: Charger Interrupt\n", __func__);
+
+	if (charger->pdata->full_check_type ==
+		SEC_BATTERY_FULLCHARGED_CHGINT) {
+		if (!sec_hal_chg_get_property(charger->client,
+			POWER_SUPPLY_PROP_STATUS, &val))
+			return;
+
+		switch (val.intval) {
+		case POWER_SUPPLY_STATUS_DISCHARGING:
+			dev_err(&charger->client->dev,
+				"%s: Interrupted but Discharging\n", __func__);
+			break;
+
+		case POWER_SUPPLY_STATUS_NOT_CHARGING:
+			dev_err(&charger->client->dev,
+				"%s: Interrupted but NOT Charging\n", __func__);
+			break;
+
+		case POWER_SUPPLY_STATUS_FULL:
+			dev_info(&charger->client->dev,
+				"%s: Interrupted by Full\n", __func__);
+			psy_do_property("battery", set,
+				POWER_SUPPLY_PROP_STATUS, val);
+			break;
+
+		case POWER_SUPPLY_STATUS_CHARGING:
+			dev_err(&charger->client->dev,
+				"%s: Interrupted but Charging\n", __func__);
+			break;
+
+		case POWER_SUPPLY_STATUS_UNKNOWN:
+		default:
+			dev_err(&charger->client->dev,
+				"%s: Invalid Charger Status\n", __func__);
+			break;
+		}
+	}
+
+	if (charger->pdata->ovp_uvlo_check_type ==
+		SEC_BATTERY_OVP_UVLO_CHGINT) {
+		if (!sec_hal_chg_get_property(charger->client,
+			POWER_SUPPLY_PROP_HEALTH, &val))
+			return;
+
+		switch (val.intval) {
+		case POWER_SUPPLY_HEALTH_OVERHEAT:
+		case POWER_SUPPLY_HEALTH_COLD:
+			dev_err(&charger->client->dev,
+				"%s: Interrupted but Hot/Cold\n", __func__);
+			break;
+
+		case POWER_SUPPLY_HEALTH_DEAD:
+			dev_err(&charger->client->dev,
+				"%s: Interrupted but Dead\n", __func__);
+			break;
+
+		case POWER_SUPPLY_HEALTH_OVERVOLTAGE:
+		case POWER_SUPPLY_HEALTH_UNDERVOLTAGE:
+			dev_info(&charger->client->dev,
+				"%s: Interrupted by OVP/UVLO\n", __func__);
+			psy_do_property("battery", set,
+				POWER_SUPPLY_PROP_HEALTH, val);
+			break;
+
+		case POWER_SUPPLY_HEALTH_UNSPEC_FAILURE:
+			dev_err(&charger->client->dev,
+				"%s: Interrupted but Unspec\n", __func__);
+			break;
+
+		case POWER_SUPPLY_HEALTH_GOOD:
+			dev_err(&charger->client->dev,
+				"%s: Interrupted but Good\n", __func__);
+			break;
+
+		case POWER_SUPPLY_HEALTH_UNKNOWN:
+		default:
+			dev_err(&charger->client->dev,
+				"%s: Invalid Charger Health\n", __func__);
+			break;
+		}
+	}
+}
+
+
+static irqreturn_t sec_chg_irq_thread(int irq, void *irq_data)
+{
+	struct sec_charger_info *charger = irq_data;
+
+	if ((charger->pdata->full_check_type ==
+		SEC_BATTERY_FULLCHARGED_CHGINT) ||
+		(charger->pdata->ovp_uvlo_check_type ==
+		SEC_BATTERY_OVP_UVLO_CHGINT))
+		schedule_delayed_work(&charger->isr_work, 0);
+
+	return IRQ_HANDLED;
+}
+
+static int sec_chg_create_attrs(struct device *dev)
+{
+	int i, rc;
+
+	for (i = 0; i < ARRAY_SIZE(sec_charger_attrs); i++) {
+		rc = device_create_file(dev, &sec_charger_attrs[i]);
+		if (rc)
+			goto create_attrs_failed;
+	}
+	goto create_attrs_succeed;
+
+create_attrs_failed:
+	dev_err(dev, "%s: failed (%d)\n", __func__, rc);
+	while (i--)
+		device_remove_file(dev, &sec_charger_attrs[i]);
+create_attrs_succeed:
+	return rc;
+}
+
+ssize_t sec_chg_show_attrs(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	const ptrdiff_t offset = attr - sec_charger_attrs;
+	int i = 0;
+
+	switch (offset) {
+	case CHG_REG:
+	case CHG_DATA:
+	case CHG_REGS:
+		i = sec_hal_chg_show_attrs(dev, offset, buf);
+		break;
+	default:
+		i = -EINVAL;
+		break;
+	}
+
+	return i;
+}
+
+ssize_t sec_chg_store_attrs(struct device *dev,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	const ptrdiff_t offset = attr - sec_charger_attrs;
+	int ret = 0;
+
+	switch (offset) {
+	case CHG_REG:
+	case CHG_DATA:
+		ret = sec_hal_chg_store_attrs(dev, offset, buf, count);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static int __devinit sec_charger_probe(
+						struct i2c_client *client,
+						const struct i2c_device_id *id)
+{
+	struct i2c_adapter *adapter =
+		to_i2c_adapter(client->dev.parent);
+	struct sec_charger_info *charger;
+	int ret = 0;
+
+	dev_dbg(&client->dev,
+		"%s: SEC Charger Driver Loading\n", __func__);
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
+		return -EIO;
+
+	charger = kzalloc(sizeof(*charger), GFP_KERNEL);
+	if (!charger)
+		return -ENOMEM;
+
+	charger->client = client;
+	charger->pdata = client->dev.platform_data;
+
+	i2c_set_clientdata(client, charger);
+
+	charger->psy_chg.name		= "sec-charger";
+	charger->psy_chg.type		= POWER_SUPPLY_TYPE_BATTERY;
+	charger->psy_chg.get_property	= sec_chg_get_property;
+	charger->psy_chg.set_property	= sec_chg_set_property;
+	charger->psy_chg.properties	= sec_charger_props;
+	charger->psy_chg.num_properties	= ARRAY_SIZE(sec_charger_props);
+
+	if (!charger->pdata->chg_gpio_init()) {
+		dev_err(&client->dev,
+			"%s: Failed to Initialize GPIO\n", __func__);
+		goto err_free;
+	}
+
+	if (!sec_hal_chg_init(charger->client)) {
+		dev_err(&client->dev,
+			"%s: Failed to Initialize Charger\n", __func__);
+		goto err_free;
+	}
+
+	ret = power_supply_register(&client->dev, &charger->psy_chg);
+	if (ret) {
+		dev_err(&client->dev,
+			"%s: Failed to Register psy_chg\n", __func__);
+		goto err_free;
+	}
+
+	if (charger->pdata->chg_irq) {
+		ret = request_threaded_irq(charger->pdata->chg_irq,
+				NULL, sec_chg_irq_thread,
+				charger->pdata->chg_irq_attr,
+				"charger-irq", charger);
+		if (ret) {
+			dev_err(&client->dev,
+				"%s: Failed to Reqeust IRQ\n", __func__);
+			return ret;
+		}
+
+		if (charger->pdata->full_check_type ==
+			SEC_BATTERY_FULLCHARGED_CHGINT) {
+			ret = enable_irq_wake(charger->pdata->chg_irq);
+			if (ret < 0)
+				dev_err(&client->dev,
+					"%s: Failed to Enable Wakeup Source(%d)\n",
+					__func__, ret);
+		}
+
+		INIT_DELAYED_WORK_DEFERRABLE(
+			&charger->isr_work, sec_chg_isr_work);
+	}
+
+	ret = sec_chg_create_attrs(charger->psy_chg.dev);
+	if (ret) {
+		dev_err(&client->dev,
+			"%s : Failed to create_attrs\n", __func__);
+		goto err_free;
+	}
+
+	dev_dbg(&client->dev,
+		"%s: SEC Charger Driver Loaded\n", __func__);
+	return 0;
+
+err_free:
+	kfree(charger);
+
+	return ret;
+}
+
+static int __devexit sec_charger_remove(
+						struct i2c_client *client)
+{
+	return 0;
+}
+
+static int sec_charger_suspend(struct i2c_client *client,
+				pm_message_t state)
+{
+	if (!sec_hal_chg_suspend(client))
+		dev_err(&client->dev,
+			"%s: Failed to Suspend Charger\n", __func__);
+
+	return 0;
+}
+
+static int sec_charger_resume(struct i2c_client *client)
+{
+	if (!sec_hal_chg_resume(client))
+		dev_err(&client->dev,
+			"%s: Failed to Resume Charger\n", __func__);
+
+	return 0;
+}
+
+static void sec_charger_shutdown(struct i2c_client *client)
+{
+}
+
+static const struct i2c_device_id sec_charger_id[] = {
+	{"sec-charger", 0},
+	{}
+};
+
+MODULE_DEVICE_TABLE(i2c, sec_charger_id);
+
+static struct i2c_driver sec_charger_driver = {
+	.driver = {
+		.name	= "sec-charger",
+	},
+	.probe	= sec_charger_probe,
+	.remove	= __devexit_p(sec_charger_remove),
+	.suspend	= sec_charger_suspend,
+	.resume		= sec_charger_resume,
+	.shutdown	= sec_charger_shutdown,
+	.id_table	= sec_charger_id,
+};
+
+static int __init sec_charger_init(void)
+{
+	return i2c_add_driver(&sec_charger_driver);
+}
+
+static void __exit sec_charger_exit(void)
+{
+	i2c_del_driver(&sec_charger_driver);
+}
+
+module_init(sec_charger_init);
+module_exit(sec_charger_exit);
+
+MODULE_DESCRIPTION("Samsung Charger Driver");
+MODULE_AUTHOR("Samsung Electronics");
+MODULE_LICENSE("GPL");