| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Timon Baetz | 702 | 49.40% | 5 | 29.41% |
| Donggeun Kim | 617 | 43.42% | 1 | 5.88% |
| Krzysztof Kozlowski | 75 | 5.28% | 3 | 17.65% |
| Jingoo Han | 8 | 0.56% | 1 | 5.88% |
| Javier Martinez Canillas | 7 | 0.49% | 1 | 5.88% |
| Axel Lin | 6 | 0.42% | 2 | 11.76% |
| Srikant Ritolia | 2 | 0.14% | 1 | 5.88% |
| SF Markus Elfring | 2 | 0.14% | 1 | 5.88% |
| Jonghwan Choi | 1 | 0.07% | 1 | 5.88% |
| Colin Ian King | 1 | 0.07% | 1 | 5.88% |
| Total | 1421 | 17 |
// SPDX-License-Identifier: GPL-2.0+ // // max8997_charger.c - Power supply consumer driver for the Maxim 8997/8966 // // Copyright (C) 2011 Samsung Electronics // MyungJoo Ham <myungjoo.ham@samsung.com> #include <linux/err.h> #include <linux/extcon.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/platform_device.h> #include <linux/power_supply.h> #include <linux/mfd/max8997.h> #include <linux/mfd/max8997-private.h> #include <linux/regulator/consumer.h> /* MAX8997_REG_STATUS4 */ #define DCINOK_SHIFT 1 #define DCINOK_MASK (1 << DCINOK_SHIFT) #define DETBAT_SHIFT 2 #define DETBAT_MASK (1 << DETBAT_SHIFT) /* MAX8997_REG_MBCCTRL1 */ #define TFCH_SHIFT 4 #define TFCH_MASK (7 << TFCH_SHIFT) /* MAX8997_REG_MBCCTRL5 */ #define ITOPOFF_SHIFT 0 #define ITOPOFF_MASK (0xF << ITOPOFF_SHIFT) struct charger_data { struct device *dev; struct max8997_dev *iodev; struct power_supply *battery; struct regulator *reg; struct extcon_dev *edev; struct notifier_block extcon_nb; struct work_struct extcon_work; }; static enum power_supply_property max8997_battery_props[] = { POWER_SUPPLY_PROP_STATUS, /* "FULL", "CHARGING" or "DISCHARGING". */ POWER_SUPPLY_PROP_PRESENT, /* the presence of battery */ POWER_SUPPLY_PROP_ONLINE, /* charger is active or not */ }; /* Note that the charger control is done by a current regulator "CHARGER" */ static int max8997_battery_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct charger_data *charger = power_supply_get_drvdata(psy); struct i2c_client *i2c = charger->iodev->i2c; int ret; u8 reg; switch (psp) { case POWER_SUPPLY_PROP_STATUS: val->intval = 0; ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, ®); if (ret) return ret; if ((reg & (1 << 0)) == 0x1) val->intval = POWER_SUPPLY_STATUS_FULL; else if ((reg & DCINOK_MASK)) val->intval = POWER_SUPPLY_STATUS_CHARGING; else val->intval = POWER_SUPPLY_STATUS_DISCHARGING; break; case POWER_SUPPLY_PROP_PRESENT: val->intval = 0; ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, ®); if (ret) return ret; if ((reg & DETBAT_MASK) == 0x0) val->intval = 1; break; case POWER_SUPPLY_PROP_ONLINE: val->intval = 0; ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, ®); if (ret) return ret; if (reg & DCINOK_MASK) val->intval = 1; break; default: return -EINVAL; } return 0; } static void max8997_battery_extcon_evt_stop_work(void *data) { struct charger_data *charger = data; cancel_work_sync(&charger->extcon_work); } static void max8997_battery_extcon_evt_worker(struct work_struct *work) { struct charger_data *charger = container_of(work, struct charger_data, extcon_work); struct extcon_dev *edev = charger->edev; int current_limit; if (extcon_get_state(edev, EXTCON_CHG_USB_SDP) > 0) { dev_dbg(charger->dev, "USB SDP charger is connected\n"); current_limit = 450000; } else if (extcon_get_state(edev, EXTCON_CHG_USB_DCP) > 0) { dev_dbg(charger->dev, "USB DCP charger is connected\n"); current_limit = 650000; } else if (extcon_get_state(edev, EXTCON_CHG_USB_FAST) > 0) { dev_dbg(charger->dev, "USB FAST charger is connected\n"); current_limit = 650000; } else if (extcon_get_state(edev, EXTCON_CHG_USB_SLOW) > 0) { dev_dbg(charger->dev, "USB SLOW charger is connected\n"); current_limit = 650000; } else if (extcon_get_state(edev, EXTCON_CHG_USB_CDP) > 0) { dev_dbg(charger->dev, "USB CDP charger is connected\n"); current_limit = 650000; } else { dev_dbg(charger->dev, "USB charger is disconnected\n"); current_limit = -1; } if (current_limit > 0) { int ret = regulator_set_current_limit(charger->reg, current_limit, current_limit); if (ret) { dev_err(charger->dev, "failed to set current limit: %d\n", ret); return; } ret = regulator_enable(charger->reg); if (ret) dev_err(charger->dev, "failed to enable regulator: %d\n", ret); } else { int ret = regulator_disable(charger->reg); if (ret) dev_err(charger->dev, "failed to disable regulator: %d\n", ret); } } static int max8997_battery_extcon_evt(struct notifier_block *nb, unsigned long event, void *param) { struct charger_data *charger = container_of(nb, struct charger_data, extcon_nb); schedule_work(&charger->extcon_work); return NOTIFY_OK; } static const struct power_supply_desc max8997_battery_desc = { .name = "max8997_pmic", .type = POWER_SUPPLY_TYPE_BATTERY, .get_property = max8997_battery_get_property, .properties = max8997_battery_props, .num_properties = ARRAY_SIZE(max8997_battery_props), }; static int max8997_battery_probe(struct platform_device *pdev) { int ret = 0; struct charger_data *charger; struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent); struct device_node *np = pdev->dev.of_node; struct i2c_client *i2c = iodev->i2c; struct max8997_platform_data *pdata = iodev->pdata; struct power_supply_config psy_cfg = {}; if (!pdata) { dev_err(&pdev->dev, "No platform data supplied.\n"); return -EINVAL; } if (pdata->eoc_mA) { int val = (pdata->eoc_mA - 50) / 10; if (val < 0) val = 0; if (val > 0xf) val = 0xf; ret = max8997_update_reg(i2c, MAX8997_REG_MBCCTRL5, val << ITOPOFF_SHIFT, ITOPOFF_MASK); if (ret < 0) { dev_err(&pdev->dev, "Cannot use i2c bus.\n"); return ret; } } switch (pdata->timeout) { case 5: ret = max8997_update_reg(i2c, MAX8997_REG_MBCCTRL1, 0x2 << TFCH_SHIFT, TFCH_MASK); break; case 6: ret = max8997_update_reg(i2c, MAX8997_REG_MBCCTRL1, 0x3 << TFCH_SHIFT, TFCH_MASK); break; case 7: ret = max8997_update_reg(i2c, MAX8997_REG_MBCCTRL1, 0x4 << TFCH_SHIFT, TFCH_MASK); break; case 0: ret = max8997_update_reg(i2c, MAX8997_REG_MBCCTRL1, 0x7 << TFCH_SHIFT, TFCH_MASK); break; default: dev_err(&pdev->dev, "incorrect timeout value (%d)\n", pdata->timeout); return -EINVAL; } if (ret < 0) { dev_err(&pdev->dev, "Cannot use i2c bus.\n"); return ret; } charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL); if (!charger) return -ENOMEM; platform_set_drvdata(pdev, charger); charger->dev = &pdev->dev; charger->iodev = iodev; psy_cfg.drv_data = charger; charger->battery = devm_power_supply_register(&pdev->dev, &max8997_battery_desc, &psy_cfg); if (IS_ERR(charger->battery)) { dev_err(&pdev->dev, "failed: power supply register\n"); return PTR_ERR(charger->battery); } // grab regulator from parent device's node pdev->dev.of_node = iodev->dev->of_node; charger->reg = devm_regulator_get_optional(&pdev->dev, "charger"); pdev->dev.of_node = np; if (IS_ERR(charger->reg)) { if (PTR_ERR(charger->reg) == -EPROBE_DEFER) return -EPROBE_DEFER; dev_info(&pdev->dev, "couldn't get charger regulator\n"); } charger->edev = extcon_get_extcon_dev("max8997-muic"); if (IS_ERR_OR_NULL(charger->edev)) { if (!charger->edev) return -EPROBE_DEFER; dev_info(charger->dev, "couldn't get extcon device\n"); } if (!IS_ERR(charger->reg) && !IS_ERR_OR_NULL(charger->edev)) { INIT_WORK(&charger->extcon_work, max8997_battery_extcon_evt_worker); ret = devm_add_action(&pdev->dev, max8997_battery_extcon_evt_stop_work, charger); if (ret) { dev_err(&pdev->dev, "failed to add extcon evt stop action: %d\n", ret); return ret; } charger->extcon_nb.notifier_call = max8997_battery_extcon_evt; ret = devm_extcon_register_notifier_all(&pdev->dev, charger->edev, &charger->extcon_nb); if (ret) { dev_err(&pdev->dev, "failed to register extcon notifier\n"); return ret; } } return 0; } static const struct platform_device_id max8997_battery_id[] = { { "max8997-battery", 0 }, { } }; MODULE_DEVICE_TABLE(platform, max8997_battery_id); static struct platform_driver max8997_battery_driver = { .driver = { .name = "max8997-battery", }, .probe = max8997_battery_probe, .id_table = max8997_battery_id, }; module_platform_driver(max8997_battery_driver); MODULE_DESCRIPTION("MAXIM 8997/8966 battery control driver"); MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>"); MODULE_LICENSE("GPL");
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