diff options
Diffstat (limited to 'drivers/battery/sec_charger.c')
| -rwxr-xr-x | drivers/battery/sec_charger.c | 745 |
1 files changed, 745 insertions, 0 deletions
diff --git a/drivers/battery/sec_charger.c b/drivers/battery/sec_charger.c new file mode 100755 index 00000000..1709dfa5 --- /dev/null +++ b/drivers/battery/sec_charger.c @@ -0,0 +1,745 @@ +/* + * 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/of_device.h> +#include <linux/of_gpio.h> +#include <linux/of_irq.h> +#include <linux/interrupt.h> +#include <linux/battery/sec_charger.h> + +extern int sec_chg_dt_init(struct device_node *np, + struct device *dev, + sec_battery_platform_data_t *pdata); + +static struct device_attribute sec_charger_attrs[] = { + SEC_CHARGER_ATTR(reg), + SEC_CHARGER_ATTR(data), + SEC_CHARGER_ATTR(regs), +}; + +static enum power_supply_property sec_charger_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_CHARGE_TYPE, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_CURRENT_MAX, + POWER_SUPPLY_PROP_CURRENT_AVG, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, +#if defined(CONFIG_FUELGAUGE_88PM822) || \ + defined(CONFIG_FUELGAUGE_88PM800) || \ + defined(CONFIG_FUELGAUGE_SPRD4SAMSUNG27X3) + POWER_SUPPLY_PROP_POWER_STATUS, + POWER_SUPPLY_PROP_CHARGE_NOW, +#endif +}; + +static int input_current[] = { + 800, + 800, + 800, +}; + +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_CURRENT_MAX: /* input current limit set */ + val->intval = charger->charging_current_max; + break; + + case POWER_SUPPLY_PROP_ONLINE: + case POWER_SUPPLY_PROP_STATUS: + case POWER_SUPPLY_PROP_CHARGE_TYPE: + case POWER_SUPPLY_PROP_HEALTH: + case POWER_SUPPLY_PROP_CURRENT_AVG: /* charging current */ + /* calculated input current limit value */ + case POWER_SUPPLY_PROP_CURRENT_NOW: +#if defined(CONFIG_FUELGAUGE_88PM822) || \ + defined(CONFIG_FUELGAUGE_88PM800) || \ + defined(CONFIG_FUELGAUGE_SPRD4SAMSUNG27X3) + case POWER_SUPPLY_PROP_POWER_STATUS: + case POWER_SUPPLY_PROP_CHARGE_NOW: +#endif + if (!sec_hal_chg_get_property(charger_variable, psp, val)) + return -EINVAL; + break; + case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: + val->intval = charger->charging_current * val->intval / 100; + break; + case POWER_SUPPLY_PROP_PRESENT: + if (!sec_hal_chg_get_property(charger_variable, 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); + union power_supply_propval input_value; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + charger->status = val->intval; + break; + + /* 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 */ + if ((charger->pdata->siop_activated) && + ((charger->cable_type == POWER_SUPPLY_TYPE_MAINS) || + (charger->cable_type == POWER_SUPPLY_TYPE_MISC))) { + charger->charging_current_max = input_current[ + charger->pdata->siop_level]; + } else { + charger->charging_current_max = + charger->pdata->charging_current[ + val->intval].input_current_limit; + } + + charger->charging_current = + charger->pdata->charging_current[ + val->intval].fast_charging_current; + + if (!sec_hal_chg_set_property(charger_variable, psp, val)) + return -EINVAL; + break; + + /* val->intval : input current limit set */ + case POWER_SUPPLY_PROP_CURRENT_MAX: + charger->charging_current_max = val->intval; + /* to control charging current, + * use input current limit and set charging current as much as possible + * so we only control input current limit to control charge current + */ + case POWER_SUPPLY_PROP_CURRENT_NOW: + if (!sec_hal_chg_set_property(charger_variable, psp, val)) + return -EINVAL; + break; + + /* val->intval : charging current */ + case POWER_SUPPLY_PROP_CURRENT_AVG: + charger->charging_current = val->intval; + + if (!sec_hal_chg_set_property(charger_variable, psp, val)) + return -EINVAL; + break; + + /* val->intval : SIOP level (%) + * SIOP charging current setting + */ + case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: + /* change val as charging current by SIOP level + * do NOT change initial charging current setting + */ +#ifdef CONFIG_CHARGER_SM5414 + if (!sec_hal_chg_set_property(charger_variable, psp, val)) + return -EINVAL; +#else + input_value.intval = + charger->charging_current * val->intval / 100; + + /* charging current should be over than USB charging current */ + if (charger->pdata->chg_functions_setting & + SEC_CHARGER_MINIMUM_SIOP_CHARGING_CURRENT) { + if (input_value.intval > 0 && + input_value.intval < + charger->pdata->charging_current[ + POWER_SUPPLY_TYPE_USB].fast_charging_current) + input_value.intval = + charger->pdata->charging_current[ + POWER_SUPPLY_TYPE_USB].fast_charging_current; + } + + /* set charging current as new value */ + if (!sec_hal_chg_set_property(charger_variable, + POWER_SUPPLY_PROP_CURRENT_AVG, &input_value)) + return -EINVAL; +#endif + break; +#ifdef CONFIG_CHARGER_SM5414 + case POWER_SUPPLY_PROP_HEALTH: + if (!sec_hal_chg_set_property(charger_variable, psp, val)) + return -EINVAL; + break; +#endif + + 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; + int full_check_type; + + dev_info(&charger->client->dev, + "%s: Charger Interrupt\n", __func__); + + psy_do_property("battery", get, + POWER_SUPPLY_PROP_CHARGE_NOW, val); + if (val.intval == SEC_BATTERY_CHARGING_1ST) + full_check_type = charger->pdata->full_check_type; + else + full_check_type = charger->pdata->full_check_type_2nd; + + if (full_check_type == SEC_BATTERY_FULLCHARGED_CHGINT) { + if (!sec_hal_chg_get_property(charger_variable, + 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__); + +#if defined(CONFIG_CHARGER_BQ24157) + charger->cable_type = POWER_SUPPLY_TYPE_BATTERY; + charger->is_charging = false; + if (!sec_hal_chg_set_property(charger_variable, POWER_SUPPLY_PROP_ONLINE, &val)) + dev_err(&charger->client->dev, + "%s: Charging disable error\n", __func__); +#endif + + 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 !defined(CONFIG_CHARGER_SM5414) + if (!sec_hal_chg_get_property(charger_variable, + POWER_SUPPLY_PROP_HEALTH, &val)) + return; +#endif + +#if defined(CONFIG_CHARGER_SM5414) + msleep(200); + val.intval = sec_get_charging_health(charger->client); +#endif + + 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__); + psy_do_property("battery", set, + POWER_SUPPLY_PROP_HEALTH, val); + break; + + case POWER_SUPPLY_HEALTH_UNKNOWN: + default: + dev_err(&charger->client->dev, + "%s: Invalid Charger Health\n", __func__); + break; + } + } + + if (charger->pdata->cable_check_type & SEC_BATTERY_CABLE_CHECK_CHGINT) { + if (!sec_hal_chg_get_property(charger_variable, + POWER_SUPPLY_PROP_ONLINE, &val)) + return; + + /* use SEC_BATTERY_CABLE_SOURCE_EXTERNAL for cable_source_type + * charger would call battery driver to set ONLINE property + * check battery driver loaded or not + */ + if (get_power_supply_by_name("battery")) { + psy_do_property("battery", set, + POWER_SUPPLY_PROP_ONLINE, val); + } else + charger->pdata->check_cable_result_callback(val.intval); + } +} + +static irqreturn_t sec_chg_irq_thread(int irq, void *irq_data) +{ + struct sec_charger_info *charger = irq_data; +#if defined(CONFIG_CHARGER_BQ24157) + schedule_delayed_work(&charger->isr_work, HZ * 0.5); +#else + schedule_delayed_work(&charger->isr_work, 0); +#endif + + 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; +} + +#if defined(CONFIG_CHARGER_MFD) +static int sec_charger_probe(struct platform_device *pdev) +{ + struct sec_charger_info *charger; + sec_charger_dev_t *mfd_dev = dev_get_drvdata(pdev->dev.parent); + sec_charger_pdata_t *pdata = dev_get_platdata(mfd_dev->dev); + int ret = 0; + + dev_info(&pdev->dev, + "%s: SEC Charger Driver Loading\n", __func__); + + charger = kzalloc(sizeof(*charger), GFP_KERNEL); + if (!charger) + return -ENOMEM; + + platform_set_drvdata(pdev, charger); + + charger->client = mfd_dev->i2c; + charger->pdata = pdata->charger_data; + + charger->psy_chg.name = "sec-charger"; + charger->psy_chg.type = POWER_SUPPLY_TYPE_UNKNOWN; + 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) { + if (!charger->pdata->chg_gpio_init()) { + dev_err(&pdev->dev, + "%s: Failed to Initialize GPIO\n", __func__); + goto err_free; + } + } + + if (!sec_hal_chg_init(charger)) { + dev_err(&pdev->dev, + "%s: Failed to Initialize Charger\n", __func__); + goto err_free; + } + + ret = power_supply_register(&pdev->dev, &charger->psy_chg); + if (ret) { + dev_err(&pdev->dev, + "%s: Failed to Register psy_chg\n", __func__); + goto err_free; + } + + if (charger->pdata->chg_irq) { + INIT_DELAYED_WORK_DEFERRABLE( + &charger->isr_work, sec_chg_isr_work); + + 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(&pdev->dev, + "%s: Failed to Reqeust IRQ\n", __func__); + goto err_supply_unreg; + } + + ret = enable_irq_wake(charger->pdata->chg_irq); + if (ret < 0) + dev_err(&pdev->dev, + "%s: Failed to Enable Wakeup Source(%d)\n", + __func__, ret); + } + + ret = sec_chg_create_attrs(charger->psy_chg.dev); + if (ret) { + dev_err(&pdev->dev, + "%s : Failed to create_attrs\n", __func__); + goto err_req_irq; + } + + dev_info(&pdev->dev, + "%s: SEC Charger Driver Loaded\n", __func__); + return 0; + +err_req_irq: + if (charger->pdata->chg_irq) + free_irq(charger->pdata->chg_irq, charger); +err_supply_unreg: + power_supply_unregister(&charger->psy_chg); +err_free: + kfree(charger); + + return ret; +} + +static int sec_charger_remove(struct platform_device *pdev) +{ + return 0; +} + +static int sec_charger_suspend(struct device *dev) +{ + struct sec_charger_info *charger = dev_get_drvdata(dev); + + if (!sec_hal_chg_suspend(charger)) + dev_err(dev, "%s: Failed to Suspend Charger\n", __func__); + + return 0; +} + +static int sec_charger_resume(struct device *dev) +{ + struct sec_charger_info *charger = dev_get_drvdata(dev); + + if (!sec_hal_chg_resume(charger)) + dev_err(dev, "%s: Failed to Resume Charger\n", __func__); + + return 0; +} + +static void sec_charger_shutdown(struct device *dev) +{ + if (!sec_hal_chg_shutdown(client)) + dev_err(&client->dev, + "%s: Failed to Shutdown Charger\n", __func__); +} + +static const struct dev_pm_ops sec_charger_pm_ops = { + .suspend = sec_charger_suspend, + .resume = sec_charger_resume, +}; + +static struct platform_driver sec_charger_driver = { + .driver = { + .name = "sec-charger", + .owner = THIS_MODULE, + .pm = &sec_charger_pm_ops, + .shutdown = sec_charger_shutdown, + }, + .probe = sec_charger_probe, + .remove = sec_charger_remove, +}; + +static int __init sec_charger_init(void) +{ + pr_info("[%s]!!!!!!!! \n", __func__); + return platform_driver_register(&sec_charger_driver); +} + +static void __exit sec_charger_exit(void) +{ + platform_driver_unregister(&sec_charger_driver); +} + +#else + +static struct of_device_id sec_charger_dt_ids[] = { + { .compatible = "samsung,sec-charger", }, + {} +}; +MODULE_DEVICE_TABLE(of, sec_charger_dt_ids); + +static int sec_charger_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + sec_battery_platform_data_t *pdata = client->dev.platform_data; + struct sec_charger_info *charger; + struct i2c_adapter *adapter = + to_i2c_adapter(client->dev.parent); + int ret = 0; + struct device_node *np = client->dev.of_node; + + dev_info(&client->dev, + "%s: SEC Charger Driver Loading\n", __func__); + + + if (IS_ENABLED(CONFIG_OF)) { + if (!pdata) + pdata = kzalloc(sizeof(sec_battery_platform_data_t), + GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + ret = sec_chg_dt_init(np, &client->dev, pdata); + if (ret) + return ret; + } else if (!pdata) { + dev_err(&client->dev, "%s: no platform data defined\n", + __func__); + return -EINVAL; + } + + + 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 = pdata; + + i2c_set_clientdata(client, charger); + + charger->psy_chg.name = "sec-charger"; + charger->psy_chg.type = POWER_SUPPLY_TYPE_UNKNOWN; + 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) { + 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(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) { + INIT_DEFERRABLE_WORK( + &charger->isr_work, sec_chg_isr_work); + + ret = request_threaded_irq(charger->pdata->chg_irq, + NULL, sec_chg_irq_thread, + charger->pdata->chg_irq_attr | IRQF_ONESHOT, + "charger-irq", charger); + if (ret) { + dev_err(&client->dev, + "%s: Failed to Reqeust IRQ\n", __func__); + goto err_supply_unreg; + } + + 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); + } + + ret = sec_chg_create_attrs(charger->psy_chg.dev); + if (ret) { + dev_err(&client->dev, + "%s : Failed to create_attrs\n", __func__); + goto err_req_irq; + } + + dev_dbg(&client->dev, + "%s: SEC Charger Driver Loaded\n", __func__); + return 0; + +err_req_irq: + if (charger->pdata->chg_irq) + free_irq(charger->pdata->chg_irq, charger); +err_supply_unreg: + power_supply_unregister(&charger->psy_chg); +err_free: + kfree(charger); + kfree(pdata); + + return ret; +} + +static int 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) +{ + if (!sec_hal_chg_shutdown(client)) + dev_err(&client->dev, + "%s: Failed to Shutdown Charger\n", __func__); +} + +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", + .of_match_table = sec_charger_dt_ids, + }, + .probe = sec_charger_probe, + .remove = 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); +} +#endif + +module_init(sec_charger_init); +module_exit(sec_charger_exit); + +MODULE_DESCRIPTION("Samsung Charger Driver"); +MODULE_AUTHOR("Samsung Electronics"); +MODULE_LICENSE("GPL"); |