Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Björn Andersson | 6148 | 98.70% | 2 | 20.00% |
Johan Hovold | 46 | 0.74% | 2 | 20.00% |
Stephan Gerhold | 17 | 0.27% | 1 | 10.00% |
Konrad Dybcio | 7 | 0.11% | 1 | 10.00% |
Abel Vesa | 5 | 0.08% | 1 | 10.00% |
Neil Armstrong | 4 | 0.06% | 1 | 10.00% |
Arnd Bergmann | 1 | 0.02% | 1 | 10.00% |
Sebastian Reichel | 1 | 0.02% | 1 | 10.00% |
Total | 6229 | 10 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved. * Copyright (c) 2022, Linaro Ltd */ #include <linux/auxiliary_bus.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/of_device.h> #include <linux/power_supply.h> #include <linux/soc/qcom/pdr.h> #include <linux/soc/qcom/pmic_glink.h> #include <linux/math.h> #include <linux/units.h> #define BATTMGR_CHEMISTRY_LEN 4 #define BATTMGR_STRING_LEN 128 enum qcom_battmgr_variant { QCOM_BATTMGR_SM8350, QCOM_BATTMGR_SC8280XP, }; #define BATTMGR_BAT_STATUS 0x1 #define BATTMGR_REQUEST_NOTIFICATION 0x4 #define BATTMGR_NOTIFICATION 0x7 #define NOTIF_BAT_PROPERTY 0x30 #define NOTIF_USB_PROPERTY 0x32 #define NOTIF_WLS_PROPERTY 0x34 #define NOTIF_BAT_INFO 0x81 #define NOTIF_BAT_STATUS 0x80 #define BATTMGR_BAT_INFO 0x9 #define BATTMGR_BAT_DISCHARGE_TIME 0xc #define BATTMGR_BAT_CHARGE_TIME 0xd #define BATTMGR_BAT_PROPERTY_GET 0x30 #define BATTMGR_BAT_PROPERTY_SET 0x31 #define BATT_STATUS 0 #define BATT_HEALTH 1 #define BATT_PRESENT 2 #define BATT_CHG_TYPE 3 #define BATT_CAPACITY 4 #define BATT_SOH 5 #define BATT_VOLT_OCV 6 #define BATT_VOLT_NOW 7 #define BATT_VOLT_MAX 8 #define BATT_CURR_NOW 9 #define BATT_CHG_CTRL_LIM 10 #define BATT_CHG_CTRL_LIM_MAX 11 #define BATT_TEMP 12 #define BATT_TECHNOLOGY 13 #define BATT_CHG_COUNTER 14 #define BATT_CYCLE_COUNT 15 #define BATT_CHG_FULL_DESIGN 16 #define BATT_CHG_FULL 17 #define BATT_MODEL_NAME 18 #define BATT_TTF_AVG 19 #define BATT_TTE_AVG 20 #define BATT_RESISTANCE 21 #define BATT_POWER_NOW 22 #define BATT_POWER_AVG 23 #define BATTMGR_USB_PROPERTY_GET 0x32 #define BATTMGR_USB_PROPERTY_SET 0x33 #define USB_ONLINE 0 #define USB_VOLT_NOW 1 #define USB_VOLT_MAX 2 #define USB_CURR_NOW 3 #define USB_CURR_MAX 4 #define USB_INPUT_CURR_LIMIT 5 #define USB_TYPE 6 #define USB_ADAP_TYPE 7 #define USB_MOISTURE_DET_EN 8 #define USB_MOISTURE_DET_STS 9 #define BATTMGR_WLS_PROPERTY_GET 0x34 #define BATTMGR_WLS_PROPERTY_SET 0x35 #define WLS_ONLINE 0 #define WLS_VOLT_NOW 1 #define WLS_VOLT_MAX 2 #define WLS_CURR_NOW 3 #define WLS_CURR_MAX 4 #define WLS_TYPE 5 #define WLS_BOOST_EN 6 struct qcom_battmgr_enable_request { struct pmic_glink_hdr hdr; __le32 battery_id; __le32 power_state; __le32 low_capacity; __le32 high_capacity; }; struct qcom_battmgr_property_request { struct pmic_glink_hdr hdr; __le32 battery; __le32 property; __le32 value; }; struct qcom_battmgr_update_request { struct pmic_glink_hdr hdr; __le32 battery_id; }; struct qcom_battmgr_charge_time_request { struct pmic_glink_hdr hdr; __le32 battery_id; __le32 percent; __le32 reserved; }; struct qcom_battmgr_discharge_time_request { struct pmic_glink_hdr hdr; __le32 battery_id; __le32 rate; /* 0 for current rate */ __le32 reserved; }; struct qcom_battmgr_message { struct pmic_glink_hdr hdr; union { struct { __le32 property; __le32 value; __le32 result; } intval; struct { __le32 property; char model[BATTMGR_STRING_LEN]; } strval; struct { /* * 0: mWh * 1: mAh */ __le32 power_unit; __le32 design_capacity; __le32 last_full_capacity; /* * 0 nonrechargable * 1 rechargable */ __le32 battery_tech; __le32 design_voltage; /* mV */ __le32 capacity_low; __le32 capacity_warning; __le32 cycle_count; /* thousandth of persent */ __le32 accuracy; __le32 max_sample_time_ms; __le32 min_sample_time_ms; __le32 max_average_interval_ms; __le32 min_average_interval_ms; /* granularity between low and warning */ __le32 capacity_granularity1; /* granularity between warning and full */ __le32 capacity_granularity2; /* * 0: no * 1: cold * 2: hot */ __le32 swappable; __le32 capabilities; char model_number[BATTMGR_STRING_LEN]; char serial_number[BATTMGR_STRING_LEN]; char battery_type[BATTMGR_STRING_LEN]; char oem_info[BATTMGR_STRING_LEN]; char battery_chemistry[BATTMGR_CHEMISTRY_LEN]; char uid[BATTMGR_STRING_LEN]; __le32 critical_bias; u8 day; u8 month; __le16 year; __le32 battery_id; } info; struct { /* * BIT(0) discharging * BIT(1) charging * BIT(2) critical low */ __le32 battery_state; /* mWh or mAh, based on info->power_unit */ __le32 capacity; __le32 rate; /* mv */ __le32 battery_voltage; /* * BIT(0) power online * BIT(1) discharging * BIT(2) charging * BIT(3) battery critical */ __le32 power_state; /* * 1: AC * 2: USB * 3: Wireless */ __le32 charging_source; __le32 temperature; } status; __le32 time; __le32 notification; }; }; #define BATTMGR_CHARGING_SOURCE_AC 1 #define BATTMGR_CHARGING_SOURCE_USB 2 #define BATTMGR_CHARGING_SOURCE_WIRELESS 3 enum qcom_battmgr_unit { QCOM_BATTMGR_UNIT_mWh = 0, QCOM_BATTMGR_UNIT_mAh = 1 }; struct qcom_battmgr_info { bool valid; bool present; unsigned int charge_type; unsigned int design_capacity; unsigned int last_full_capacity; unsigned int voltage_max_design; unsigned int voltage_max; unsigned int capacity_low; unsigned int capacity_warning; unsigned int cycle_count; unsigned int charge_count; char model_number[BATTMGR_STRING_LEN]; char serial_number[BATTMGR_STRING_LEN]; char oem_info[BATTMGR_STRING_LEN]; unsigned char technology; unsigned char day; unsigned char month; unsigned short year; }; struct qcom_battmgr_status { unsigned int status; unsigned int health; unsigned int capacity; unsigned int percent; int current_now; int power_now; unsigned int voltage_now; unsigned int voltage_ocv; unsigned int temperature; unsigned int discharge_time; unsigned int charge_time; }; struct qcom_battmgr_ac { bool online; }; struct qcom_battmgr_usb { bool online; unsigned int voltage_now; unsigned int voltage_max; unsigned int current_now; unsigned int current_max; unsigned int current_limit; unsigned int usb_type; }; struct qcom_battmgr_wireless { bool online; unsigned int voltage_now; unsigned int voltage_max; unsigned int current_now; unsigned int current_max; }; struct qcom_battmgr { struct device *dev; struct pmic_glink_client *client; enum qcom_battmgr_variant variant; struct power_supply *ac_psy; struct power_supply *bat_psy; struct power_supply *usb_psy; struct power_supply *wls_psy; enum qcom_battmgr_unit unit; int error; struct completion ack; bool service_up; struct qcom_battmgr_info info; struct qcom_battmgr_status status; struct qcom_battmgr_ac ac; struct qcom_battmgr_usb usb; struct qcom_battmgr_wireless wireless; struct work_struct enable_work; /* * @lock is used to prevent concurrent power supply requests to the * firmware, as it then stops responding. */ struct mutex lock; }; static int qcom_battmgr_request(struct qcom_battmgr *battmgr, void *data, size_t len) { unsigned long left; int ret; reinit_completion(&battmgr->ack); battmgr->error = 0; ret = pmic_glink_send(battmgr->client, data, len); if (ret < 0) return ret; left = wait_for_completion_timeout(&battmgr->ack, HZ); if (!left) return -ETIMEDOUT; return battmgr->error; } static int qcom_battmgr_request_property(struct qcom_battmgr *battmgr, int opcode, int property, u32 value) { struct qcom_battmgr_property_request request = { .hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR), .hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP), .hdr.opcode = cpu_to_le32(opcode), .battery = cpu_to_le32(0), .property = cpu_to_le32(property), .value = cpu_to_le32(value), }; return qcom_battmgr_request(battmgr, &request, sizeof(request)); } static int qcom_battmgr_update_status(struct qcom_battmgr *battmgr) { struct qcom_battmgr_update_request request = { .hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR), .hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP), .hdr.opcode = cpu_to_le32(BATTMGR_BAT_STATUS), .battery_id = cpu_to_le32(0), }; return qcom_battmgr_request(battmgr, &request, sizeof(request)); } static int qcom_battmgr_update_info(struct qcom_battmgr *battmgr) { struct qcom_battmgr_update_request request = { .hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR), .hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP), .hdr.opcode = cpu_to_le32(BATTMGR_BAT_INFO), .battery_id = cpu_to_le32(0), }; return qcom_battmgr_request(battmgr, &request, sizeof(request)); } static int qcom_battmgr_update_charge_time(struct qcom_battmgr *battmgr) { struct qcom_battmgr_charge_time_request request = { .hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR), .hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP), .hdr.opcode = cpu_to_le32(BATTMGR_BAT_CHARGE_TIME), .battery_id = cpu_to_le32(0), .percent = cpu_to_le32(100), }; return qcom_battmgr_request(battmgr, &request, sizeof(request)); } static int qcom_battmgr_update_discharge_time(struct qcom_battmgr *battmgr) { struct qcom_battmgr_discharge_time_request request = { .hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR), .hdr.type = cpu_to_le32(PMIC_GLINK_REQ_RESP), .hdr.opcode = cpu_to_le32(BATTMGR_BAT_DISCHARGE_TIME), .battery_id = cpu_to_le32(0), .rate = cpu_to_le32(0), }; return qcom_battmgr_request(battmgr, &request, sizeof(request)); } static const u8 sm8350_bat_prop_map[] = { [POWER_SUPPLY_PROP_STATUS] = BATT_STATUS, [POWER_SUPPLY_PROP_HEALTH] = BATT_HEALTH, [POWER_SUPPLY_PROP_PRESENT] = BATT_PRESENT, [POWER_SUPPLY_PROP_CHARGE_TYPE] = BATT_CHG_TYPE, [POWER_SUPPLY_PROP_CAPACITY] = BATT_CAPACITY, [POWER_SUPPLY_PROP_VOLTAGE_OCV] = BATT_VOLT_OCV, [POWER_SUPPLY_PROP_VOLTAGE_NOW] = BATT_VOLT_NOW, [POWER_SUPPLY_PROP_VOLTAGE_MAX] = BATT_VOLT_MAX, [POWER_SUPPLY_PROP_CURRENT_NOW] = BATT_CURR_NOW, [POWER_SUPPLY_PROP_TEMP] = BATT_TEMP, [POWER_SUPPLY_PROP_TECHNOLOGY] = BATT_TECHNOLOGY, [POWER_SUPPLY_PROP_CHARGE_COUNTER] = BATT_CHG_COUNTER, [POWER_SUPPLY_PROP_CYCLE_COUNT] = BATT_CYCLE_COUNT, [POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN] = BATT_CHG_FULL_DESIGN, [POWER_SUPPLY_PROP_CHARGE_FULL] = BATT_CHG_FULL, [POWER_SUPPLY_PROP_MODEL_NAME] = BATT_MODEL_NAME, [POWER_SUPPLY_PROP_TIME_TO_FULL_AVG] = BATT_TTF_AVG, [POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG] = BATT_TTE_AVG, [POWER_SUPPLY_PROP_POWER_NOW] = BATT_POWER_NOW, }; static int qcom_battmgr_bat_sm8350_update(struct qcom_battmgr *battmgr, enum power_supply_property psp) { unsigned int prop; int ret; if (psp >= ARRAY_SIZE(sm8350_bat_prop_map)) return -EINVAL; prop = sm8350_bat_prop_map[psp]; mutex_lock(&battmgr->lock); ret = qcom_battmgr_request_property(battmgr, BATTMGR_BAT_PROPERTY_GET, prop, 0); mutex_unlock(&battmgr->lock); return ret; } static int qcom_battmgr_bat_sc8280xp_update(struct qcom_battmgr *battmgr, enum power_supply_property psp) { int ret; mutex_lock(&battmgr->lock); if (!battmgr->info.valid) { ret = qcom_battmgr_update_info(battmgr); if (ret < 0) goto out_unlock; battmgr->info.valid = true; } ret = qcom_battmgr_update_status(battmgr); if (ret < 0) goto out_unlock; if (psp == POWER_SUPPLY_PROP_TIME_TO_FULL_AVG) { ret = qcom_battmgr_update_charge_time(battmgr); if (ret < 0) { ret = -ENODATA; goto out_unlock; } } if (psp == POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG) { ret = qcom_battmgr_update_discharge_time(battmgr); if (ret < 0) { ret = -ENODATA; goto out_unlock; } } out_unlock: mutex_unlock(&battmgr->lock); return ret; } static int qcom_battmgr_bat_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct qcom_battmgr *battmgr = power_supply_get_drvdata(psy); enum qcom_battmgr_unit unit = battmgr->unit; int ret; if (!battmgr->service_up) return -EAGAIN; if (battmgr->variant == QCOM_BATTMGR_SC8280XP) ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp); else ret = qcom_battmgr_bat_sm8350_update(battmgr, psp); if (ret < 0) return ret; switch (psp) { case POWER_SUPPLY_PROP_STATUS: val->intval = battmgr->status.status; break; case POWER_SUPPLY_PROP_CHARGE_TYPE: val->intval = battmgr->info.charge_type; break; case POWER_SUPPLY_PROP_HEALTH: val->intval = battmgr->status.health; break; case POWER_SUPPLY_PROP_PRESENT: val->intval = battmgr->info.present; break; case POWER_SUPPLY_PROP_TECHNOLOGY: val->intval = battmgr->info.technology; break; case POWER_SUPPLY_PROP_CYCLE_COUNT: val->intval = battmgr->info.cycle_count; break; case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: val->intval = battmgr->info.voltage_max_design; break; case POWER_SUPPLY_PROP_VOLTAGE_MAX: val->intval = battmgr->info.voltage_max; break; case POWER_SUPPLY_PROP_VOLTAGE_NOW: val->intval = battmgr->status.voltage_now; break; case POWER_SUPPLY_PROP_VOLTAGE_OCV: val->intval = battmgr->status.voltage_ocv; break; case POWER_SUPPLY_PROP_CURRENT_NOW: val->intval = battmgr->status.current_now; break; case POWER_SUPPLY_PROP_POWER_NOW: val->intval = battmgr->status.power_now; break; case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: if (unit != QCOM_BATTMGR_UNIT_mAh) return -ENODATA; val->intval = battmgr->info.design_capacity; break; case POWER_SUPPLY_PROP_CHARGE_FULL: if (unit != QCOM_BATTMGR_UNIT_mAh) return -ENODATA; val->intval = battmgr->info.last_full_capacity; break; case POWER_SUPPLY_PROP_CHARGE_EMPTY: if (unit != QCOM_BATTMGR_UNIT_mAh) return -ENODATA; val->intval = battmgr->info.capacity_low; break; case POWER_SUPPLY_PROP_CHARGE_NOW: if (unit != QCOM_BATTMGR_UNIT_mAh) return -ENODATA; val->intval = battmgr->status.capacity; break; case POWER_SUPPLY_PROP_CHARGE_COUNTER: val->intval = battmgr->info.charge_count; break; case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: if (unit != QCOM_BATTMGR_UNIT_mWh) return -ENODATA; val->intval = battmgr->info.design_capacity; break; case POWER_SUPPLY_PROP_ENERGY_FULL: if (unit != QCOM_BATTMGR_UNIT_mWh) return -ENODATA; val->intval = battmgr->info.last_full_capacity; break; case POWER_SUPPLY_PROP_ENERGY_EMPTY: if (unit != QCOM_BATTMGR_UNIT_mWh) return -ENODATA; val->intval = battmgr->info.capacity_low; break; case POWER_SUPPLY_PROP_ENERGY_NOW: if (unit != QCOM_BATTMGR_UNIT_mWh) return -ENODATA; val->intval = battmgr->status.capacity; break; case POWER_SUPPLY_PROP_CAPACITY: val->intval = battmgr->status.percent; break; case POWER_SUPPLY_PROP_TEMP: val->intval = battmgr->status.temperature; break; case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG: val->intval = battmgr->status.discharge_time; break; case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG: val->intval = battmgr->status.charge_time; break; case POWER_SUPPLY_PROP_MANUFACTURE_YEAR: val->intval = battmgr->info.year; break; case POWER_SUPPLY_PROP_MANUFACTURE_MONTH: val->intval = battmgr->info.month; break; case POWER_SUPPLY_PROP_MANUFACTURE_DAY: val->intval = battmgr->info.day; break; case POWER_SUPPLY_PROP_MODEL_NAME: val->strval = battmgr->info.model_number; break; case POWER_SUPPLY_PROP_MANUFACTURER: val->strval = battmgr->info.oem_info; break; case POWER_SUPPLY_PROP_SERIAL_NUMBER: val->strval = battmgr->info.serial_number; break; default: return -EINVAL; } return 0; } static const enum power_supply_property sc8280xp_bat_props[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_TECHNOLOGY, POWER_SUPPLY_PROP_CYCLE_COUNT, POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, POWER_SUPPLY_PROP_VOLTAGE_NOW, POWER_SUPPLY_PROP_POWER_NOW, POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, POWER_SUPPLY_PROP_CHARGE_FULL, POWER_SUPPLY_PROP_CHARGE_EMPTY, POWER_SUPPLY_PROP_CHARGE_NOW, POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, POWER_SUPPLY_PROP_ENERGY_FULL, POWER_SUPPLY_PROP_ENERGY_EMPTY, POWER_SUPPLY_PROP_ENERGY_NOW, POWER_SUPPLY_PROP_TEMP, POWER_SUPPLY_PROP_MANUFACTURE_YEAR, POWER_SUPPLY_PROP_MANUFACTURE_MONTH, POWER_SUPPLY_PROP_MANUFACTURE_DAY, POWER_SUPPLY_PROP_MODEL_NAME, POWER_SUPPLY_PROP_MANUFACTURER, POWER_SUPPLY_PROP_SERIAL_NUMBER, }; static const struct power_supply_desc sc8280xp_bat_psy_desc = { .name = "qcom-battmgr-bat", .type = POWER_SUPPLY_TYPE_BATTERY, .properties = sc8280xp_bat_props, .num_properties = ARRAY_SIZE(sc8280xp_bat_props), .get_property = qcom_battmgr_bat_get_property, }; static const enum power_supply_property sm8350_bat_props[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_CHARGE_TYPE, POWER_SUPPLY_PROP_CAPACITY, POWER_SUPPLY_PROP_VOLTAGE_OCV, POWER_SUPPLY_PROP_VOLTAGE_NOW, POWER_SUPPLY_PROP_VOLTAGE_MAX, POWER_SUPPLY_PROP_CURRENT_NOW, POWER_SUPPLY_PROP_TEMP, POWER_SUPPLY_PROP_TECHNOLOGY, POWER_SUPPLY_PROP_CHARGE_COUNTER, POWER_SUPPLY_PROP_CYCLE_COUNT, POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, POWER_SUPPLY_PROP_CHARGE_FULL, POWER_SUPPLY_PROP_MODEL_NAME, POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, POWER_SUPPLY_PROP_POWER_NOW, }; static const struct power_supply_desc sm8350_bat_psy_desc = { .name = "qcom-battmgr-bat", .type = POWER_SUPPLY_TYPE_BATTERY, .properties = sm8350_bat_props, .num_properties = ARRAY_SIZE(sm8350_bat_props), .get_property = qcom_battmgr_bat_get_property, }; static int qcom_battmgr_ac_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct qcom_battmgr *battmgr = power_supply_get_drvdata(psy); int ret; if (!battmgr->service_up) return -EAGAIN; ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp); if (ret) return ret; switch (psp) { case POWER_SUPPLY_PROP_ONLINE: val->intval = battmgr->ac.online; break; default: return -EINVAL; } return 0; } static const enum power_supply_property sc8280xp_ac_props[] = { POWER_SUPPLY_PROP_ONLINE, }; static const struct power_supply_desc sc8280xp_ac_psy_desc = { .name = "qcom-battmgr-ac", .type = POWER_SUPPLY_TYPE_MAINS, .properties = sc8280xp_ac_props, .num_properties = ARRAY_SIZE(sc8280xp_ac_props), .get_property = qcom_battmgr_ac_get_property, }; static const u8 sm8350_usb_prop_map[] = { [POWER_SUPPLY_PROP_ONLINE] = USB_ONLINE, [POWER_SUPPLY_PROP_VOLTAGE_NOW] = USB_VOLT_NOW, [POWER_SUPPLY_PROP_VOLTAGE_MAX] = USB_VOLT_MAX, [POWER_SUPPLY_PROP_CURRENT_NOW] = USB_CURR_NOW, [POWER_SUPPLY_PROP_CURRENT_MAX] = USB_CURR_MAX, [POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT] = USB_INPUT_CURR_LIMIT, [POWER_SUPPLY_PROP_USB_TYPE] = USB_TYPE, }; static int qcom_battmgr_usb_sm8350_update(struct qcom_battmgr *battmgr, enum power_supply_property psp) { unsigned int prop; int ret; if (psp >= ARRAY_SIZE(sm8350_usb_prop_map)) return -EINVAL; prop = sm8350_usb_prop_map[psp]; mutex_lock(&battmgr->lock); ret = qcom_battmgr_request_property(battmgr, BATTMGR_USB_PROPERTY_GET, prop, 0); mutex_unlock(&battmgr->lock); return ret; } static int qcom_battmgr_usb_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct qcom_battmgr *battmgr = power_supply_get_drvdata(psy); int ret; if (!battmgr->service_up) return -EAGAIN; if (battmgr->variant == QCOM_BATTMGR_SC8280XP) ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp); else ret = qcom_battmgr_usb_sm8350_update(battmgr, psp); if (ret) return ret; switch (psp) { case POWER_SUPPLY_PROP_ONLINE: val->intval = battmgr->usb.online; break; case POWER_SUPPLY_PROP_VOLTAGE_NOW: val->intval = battmgr->usb.voltage_now; break; case POWER_SUPPLY_PROP_VOLTAGE_MAX: val->intval = battmgr->usb.voltage_max; break; case POWER_SUPPLY_PROP_CURRENT_NOW: val->intval = battmgr->usb.current_now; break; case POWER_SUPPLY_PROP_CURRENT_MAX: val->intval = battmgr->usb.current_max; break; case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: val->intval = battmgr->usb.current_limit; break; case POWER_SUPPLY_PROP_USB_TYPE: val->intval = battmgr->usb.usb_type; break; default: return -EINVAL; } return 0; } static const enum power_supply_usb_type usb_psy_supported_types[] = { POWER_SUPPLY_USB_TYPE_UNKNOWN, POWER_SUPPLY_USB_TYPE_SDP, POWER_SUPPLY_USB_TYPE_DCP, POWER_SUPPLY_USB_TYPE_CDP, POWER_SUPPLY_USB_TYPE_ACA, POWER_SUPPLY_USB_TYPE_C, POWER_SUPPLY_USB_TYPE_PD, POWER_SUPPLY_USB_TYPE_PD_DRP, POWER_SUPPLY_USB_TYPE_PD_PPS, POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID, }; static const enum power_supply_property sc8280xp_usb_props[] = { POWER_SUPPLY_PROP_ONLINE, }; static const struct power_supply_desc sc8280xp_usb_psy_desc = { .name = "qcom-battmgr-usb", .type = POWER_SUPPLY_TYPE_USB, .properties = sc8280xp_usb_props, .num_properties = ARRAY_SIZE(sc8280xp_usb_props), .get_property = qcom_battmgr_usb_get_property, .usb_types = usb_psy_supported_types, .num_usb_types = ARRAY_SIZE(usb_psy_supported_types), }; static const enum power_supply_property sm8350_usb_props[] = { POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_VOLTAGE_NOW, POWER_SUPPLY_PROP_VOLTAGE_MAX, POWER_SUPPLY_PROP_CURRENT_NOW, POWER_SUPPLY_PROP_CURRENT_MAX, POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, POWER_SUPPLY_PROP_USB_TYPE, }; static const struct power_supply_desc sm8350_usb_psy_desc = { .name = "qcom-battmgr-usb", .type = POWER_SUPPLY_TYPE_USB, .properties = sm8350_usb_props, .num_properties = ARRAY_SIZE(sm8350_usb_props), .get_property = qcom_battmgr_usb_get_property, .usb_types = usb_psy_supported_types, .num_usb_types = ARRAY_SIZE(usb_psy_supported_types), }; static const u8 sm8350_wls_prop_map[] = { [POWER_SUPPLY_PROP_ONLINE] = WLS_ONLINE, [POWER_SUPPLY_PROP_VOLTAGE_NOW] = WLS_VOLT_NOW, [POWER_SUPPLY_PROP_VOLTAGE_MAX] = WLS_VOLT_MAX, [POWER_SUPPLY_PROP_CURRENT_NOW] = WLS_CURR_NOW, [POWER_SUPPLY_PROP_CURRENT_MAX] = WLS_CURR_MAX, }; static int qcom_battmgr_wls_sm8350_update(struct qcom_battmgr *battmgr, enum power_supply_property psp) { unsigned int prop; int ret; if (psp >= ARRAY_SIZE(sm8350_wls_prop_map)) return -EINVAL; prop = sm8350_wls_prop_map[psp]; mutex_lock(&battmgr->lock); ret = qcom_battmgr_request_property(battmgr, BATTMGR_WLS_PROPERTY_GET, prop, 0); mutex_unlock(&battmgr->lock); return ret; } static int qcom_battmgr_wls_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct qcom_battmgr *battmgr = power_supply_get_drvdata(psy); int ret; if (!battmgr->service_up) return -EAGAIN; if (battmgr->variant == QCOM_BATTMGR_SC8280XP) ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp); else ret = qcom_battmgr_wls_sm8350_update(battmgr, psp); if (ret < 0) return ret; switch (psp) { case POWER_SUPPLY_PROP_ONLINE: val->intval = battmgr->wireless.online; break; case POWER_SUPPLY_PROP_VOLTAGE_NOW: val->intval = battmgr->wireless.voltage_now; break; case POWER_SUPPLY_PROP_VOLTAGE_MAX: val->intval = battmgr->wireless.voltage_max; break; case POWER_SUPPLY_PROP_CURRENT_NOW: val->intval = battmgr->wireless.current_now; break; case POWER_SUPPLY_PROP_CURRENT_MAX: val->intval = battmgr->wireless.current_max; break; default: return -EINVAL; } return 0; } static const enum power_supply_property sc8280xp_wls_props[] = { POWER_SUPPLY_PROP_ONLINE, }; static const struct power_supply_desc sc8280xp_wls_psy_desc = { .name = "qcom-battmgr-wls", .type = POWER_SUPPLY_TYPE_WIRELESS, .properties = sc8280xp_wls_props, .num_properties = ARRAY_SIZE(sc8280xp_wls_props), .get_property = qcom_battmgr_wls_get_property, }; static const enum power_supply_property sm8350_wls_props[] = { POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_VOLTAGE_NOW, POWER_SUPPLY_PROP_VOLTAGE_MAX, POWER_SUPPLY_PROP_CURRENT_NOW, POWER_SUPPLY_PROP_CURRENT_MAX, }; static const struct power_supply_desc sm8350_wls_psy_desc = { .name = "qcom-battmgr-wls", .type = POWER_SUPPLY_TYPE_WIRELESS, .properties = sm8350_wls_props, .num_properties = ARRAY_SIZE(sm8350_wls_props), .get_property = qcom_battmgr_wls_get_property, }; static void qcom_battmgr_notification(struct qcom_battmgr *battmgr, const struct qcom_battmgr_message *msg, int len) { size_t payload_len = len - sizeof(struct pmic_glink_hdr); unsigned int notification; if (payload_len != sizeof(msg->notification)) { dev_warn(battmgr->dev, "ignoring notification with invalid length\n"); return; } notification = le32_to_cpu(msg->notification); switch (notification) { case NOTIF_BAT_INFO: battmgr->info.valid = false; fallthrough; case NOTIF_BAT_STATUS: case NOTIF_BAT_PROPERTY: power_supply_changed(battmgr->bat_psy); break; case NOTIF_USB_PROPERTY: power_supply_changed(battmgr->usb_psy); break; case NOTIF_WLS_PROPERTY: power_supply_changed(battmgr->wls_psy); break; default: dev_err(battmgr->dev, "unknown notification: %#x\n", notification); break; } } static void qcom_battmgr_sc8280xp_strcpy(char *dest, const char *src) { size_t len = src[0]; /* Some firmware versions return Pascal-style strings */ if (len < BATTMGR_STRING_LEN && len == strnlen(src + 1, BATTMGR_STRING_LEN - 1)) { memcpy(dest, src + 1, len); dest[len] = '\0'; } else { memcpy(dest, src, BATTMGR_STRING_LEN); } } static unsigned int qcom_battmgr_sc8280xp_parse_technology(const char *chemistry) { if (!strncmp(chemistry, "LIO", BATTMGR_CHEMISTRY_LEN)) return POWER_SUPPLY_TECHNOLOGY_LION; pr_err("Unknown battery technology '%s'\n", chemistry); return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; } static unsigned int qcom_battmgr_sc8280xp_convert_temp(unsigned int temperature) { return DIV_ROUND_CLOSEST(temperature, 10); } static void qcom_battmgr_sc8280xp_callback(struct qcom_battmgr *battmgr, const struct qcom_battmgr_message *resp, size_t len) { unsigned int opcode = le32_to_cpu(resp->hdr.opcode); unsigned int source; unsigned int state; size_t payload_len = len - sizeof(struct pmic_glink_hdr); if (payload_len < sizeof(__le32)) { dev_warn(battmgr->dev, "invalid payload length for %#x: %zd\n", opcode, len); return; } switch (opcode) { case BATTMGR_REQUEST_NOTIFICATION: battmgr->error = 0; break; case BATTMGR_BAT_INFO: /* some firmware versions report an extra __le32 at the end of the payload */ if (payload_len != sizeof(resp->info) && payload_len != (sizeof(resp->info) + sizeof(__le32))) { dev_warn(battmgr->dev, "invalid payload length for battery information request: %zd\n", payload_len); battmgr->error = -ENODATA; return; } battmgr->unit = le32_to_cpu(resp->info.power_unit); battmgr->info.present = true; battmgr->info.design_capacity = le32_to_cpu(resp->info.design_capacity) * 1000; battmgr->info.last_full_capacity = le32_to_cpu(resp->info.last_full_capacity) * 1000; battmgr->info.voltage_max_design = le32_to_cpu(resp->info.design_voltage) * 1000; battmgr->info.capacity_low = le32_to_cpu(resp->info.capacity_low) * 1000; battmgr->info.cycle_count = le32_to_cpu(resp->info.cycle_count); qcom_battmgr_sc8280xp_strcpy(battmgr->info.model_number, resp->info.model_number); qcom_battmgr_sc8280xp_strcpy(battmgr->info.serial_number, resp->info.serial_number); battmgr->info.technology = qcom_battmgr_sc8280xp_parse_technology(resp->info.battery_chemistry); qcom_battmgr_sc8280xp_strcpy(battmgr->info.oem_info, resp->info.oem_info); battmgr->info.day = resp->info.day; battmgr->info.month = resp->info.month; battmgr->info.year = le16_to_cpu(resp->info.year); break; case BATTMGR_BAT_STATUS: if (payload_len != sizeof(resp->status)) { dev_warn(battmgr->dev, "invalid payload length for battery status request: %zd\n", payload_len); battmgr->error = -ENODATA; return; } state = le32_to_cpu(resp->status.battery_state); if (state & BIT(0)) battmgr->status.status = POWER_SUPPLY_STATUS_DISCHARGING; else if (state & BIT(1)) battmgr->status.status = POWER_SUPPLY_STATUS_CHARGING; else battmgr->status.status = POWER_SUPPLY_STATUS_NOT_CHARGING; battmgr->status.capacity = le32_to_cpu(resp->status.capacity) * 1000; battmgr->status.power_now = le32_to_cpu(resp->status.rate) * 1000; battmgr->status.voltage_now = le32_to_cpu(resp->status.battery_voltage) * 1000; battmgr->status.temperature = qcom_battmgr_sc8280xp_convert_temp(le32_to_cpu(resp->status.temperature)); source = le32_to_cpu(resp->status.charging_source); battmgr->ac.online = source == BATTMGR_CHARGING_SOURCE_AC; battmgr->usb.online = source == BATTMGR_CHARGING_SOURCE_USB; battmgr->wireless.online = source == BATTMGR_CHARGING_SOURCE_WIRELESS; break; case BATTMGR_BAT_DISCHARGE_TIME: battmgr->status.discharge_time = le32_to_cpu(resp->time); break; case BATTMGR_BAT_CHARGE_TIME: battmgr->status.charge_time = le32_to_cpu(resp->time); break; default: dev_warn(battmgr->dev, "unknown message %#x\n", opcode); break; } complete(&battmgr->ack); } static void qcom_battmgr_sm8350_callback(struct qcom_battmgr *battmgr, const struct qcom_battmgr_message *resp, size_t len) { unsigned int property; unsigned int opcode = le32_to_cpu(resp->hdr.opcode); size_t payload_len = len - sizeof(struct pmic_glink_hdr); unsigned int val; if (payload_len < sizeof(__le32)) { dev_warn(battmgr->dev, "invalid payload length for %#x: %zd\n", opcode, len); return; } switch (opcode) { case BATTMGR_BAT_PROPERTY_GET: property = le32_to_cpu(resp->intval.property); if (property == BATT_MODEL_NAME) { if (payload_len != sizeof(resp->strval)) { dev_warn(battmgr->dev, "invalid payload length for BATT_MODEL_NAME request: %zd\n", payload_len); battmgr->error = -ENODATA; return; } } else { if (payload_len != sizeof(resp->intval)) { dev_warn(battmgr->dev, "invalid payload length for %#x request: %zd\n", property, payload_len); battmgr->error = -ENODATA; return; } battmgr->error = le32_to_cpu(resp->intval.result); if (battmgr->error) goto out_complete; } switch (property) { case BATT_STATUS: battmgr->status.status = le32_to_cpu(resp->intval.value); break; case BATT_HEALTH: battmgr->status.health = le32_to_cpu(resp->intval.value); break; case BATT_PRESENT: battmgr->info.present = le32_to_cpu(resp->intval.value); break; case BATT_CHG_TYPE: battmgr->info.charge_type = le32_to_cpu(resp->intval.value); break; case BATT_CAPACITY: battmgr->status.percent = le32_to_cpu(resp->intval.value) / 100; break; case BATT_VOLT_OCV: battmgr->status.voltage_ocv = le32_to_cpu(resp->intval.value); break; case BATT_VOLT_NOW: battmgr->status.voltage_now = le32_to_cpu(resp->intval.value); break; case BATT_VOLT_MAX: battmgr->info.voltage_max = le32_to_cpu(resp->intval.value); break; case BATT_CURR_NOW: battmgr->status.current_now = le32_to_cpu(resp->intval.value); break; case BATT_TEMP: val = le32_to_cpu(resp->intval.value); battmgr->status.temperature = DIV_ROUND_CLOSEST(val, 10); break; case BATT_TECHNOLOGY: battmgr->info.technology = le32_to_cpu(resp->intval.value); break; case BATT_CHG_COUNTER: battmgr->info.charge_count = le32_to_cpu(resp->intval.value); break; case BATT_CYCLE_COUNT: battmgr->info.cycle_count = le32_to_cpu(resp->intval.value); break; case BATT_CHG_FULL_DESIGN: battmgr->info.design_capacity = le32_to_cpu(resp->intval.value); break; case BATT_CHG_FULL: battmgr->info.last_full_capacity = le32_to_cpu(resp->intval.value); break; case BATT_MODEL_NAME: strscpy(battmgr->info.model_number, resp->strval.model, BATTMGR_STRING_LEN); break; case BATT_TTF_AVG: battmgr->status.charge_time = le32_to_cpu(resp->intval.value); break; case BATT_TTE_AVG: battmgr->status.discharge_time = le32_to_cpu(resp->intval.value); break; case BATT_POWER_NOW: battmgr->status.power_now = le32_to_cpu(resp->intval.value); break; default: dev_warn(battmgr->dev, "unknown property %#x\n", property); break; } break; case BATTMGR_USB_PROPERTY_GET: property = le32_to_cpu(resp->intval.property); if (payload_len != sizeof(resp->intval)) { dev_warn(battmgr->dev, "invalid payload length for %#x request: %zd\n", property, payload_len); battmgr->error = -ENODATA; return; } battmgr->error = le32_to_cpu(resp->intval.result); if (battmgr->error) goto out_complete; switch (property) { case USB_ONLINE: battmgr->usb.online = le32_to_cpu(resp->intval.value); break; case USB_VOLT_NOW: battmgr->usb.voltage_now = le32_to_cpu(resp->intval.value); break; case USB_VOLT_MAX: battmgr->usb.voltage_max = le32_to_cpu(resp->intval.value); break; case USB_CURR_NOW: battmgr->usb.current_now = le32_to_cpu(resp->intval.value); break; case USB_CURR_MAX: battmgr->usb.current_max = le32_to_cpu(resp->intval.value); break; case USB_INPUT_CURR_LIMIT: battmgr->usb.current_limit = le32_to_cpu(resp->intval.value); break; case USB_TYPE: battmgr->usb.usb_type = le32_to_cpu(resp->intval.value); break; default: dev_warn(battmgr->dev, "unknown property %#x\n", property); break; } break; case BATTMGR_WLS_PROPERTY_GET: property = le32_to_cpu(resp->intval.property); if (payload_len != sizeof(resp->intval)) { dev_warn(battmgr->dev, "invalid payload length for %#x request: %zd\n", property, payload_len); battmgr->error = -ENODATA; return; } battmgr->error = le32_to_cpu(resp->intval.result); if (battmgr->error) goto out_complete; switch (property) { case WLS_ONLINE: battmgr->wireless.online = le32_to_cpu(resp->intval.value); break; case WLS_VOLT_NOW: battmgr->wireless.voltage_now = le32_to_cpu(resp->intval.value); break; case WLS_VOLT_MAX: battmgr->wireless.voltage_max = le32_to_cpu(resp->intval.value); break; case WLS_CURR_NOW: battmgr->wireless.current_now = le32_to_cpu(resp->intval.value); break; case WLS_CURR_MAX: battmgr->wireless.current_max = le32_to_cpu(resp->intval.value); break; default: dev_warn(battmgr->dev, "unknown property %#x\n", property); break; } break; case BATTMGR_REQUEST_NOTIFICATION: battmgr->error = 0; break; default: dev_warn(battmgr->dev, "unknown message %#x\n", opcode); break; } out_complete: complete(&battmgr->ack); } static void qcom_battmgr_callback(const void *data, size_t len, void *priv) { const struct pmic_glink_hdr *hdr = data; struct qcom_battmgr *battmgr = priv; unsigned int opcode = le32_to_cpu(hdr->opcode); if (opcode == BATTMGR_NOTIFICATION) qcom_battmgr_notification(battmgr, data, len); else if (battmgr->variant == QCOM_BATTMGR_SC8280XP) qcom_battmgr_sc8280xp_callback(battmgr, data, len); else qcom_battmgr_sm8350_callback(battmgr, data, len); } static void qcom_battmgr_enable_worker(struct work_struct *work) { struct qcom_battmgr *battmgr = container_of(work, struct qcom_battmgr, enable_work); struct qcom_battmgr_enable_request req = { .hdr.owner = cpu_to_le32(PMIC_GLINK_OWNER_BATTMGR), .hdr.type = cpu_to_le32(PMIC_GLINK_NOTIFY), .hdr.opcode = cpu_to_le32(BATTMGR_REQUEST_NOTIFICATION), }; int ret; ret = qcom_battmgr_request(battmgr, &req, sizeof(req)); if (ret) dev_err(battmgr->dev, "failed to request power notifications\n"); } static void qcom_battmgr_pdr_notify(void *priv, int state) { struct qcom_battmgr *battmgr = priv; if (state == SERVREG_SERVICE_STATE_UP) { battmgr->service_up = true; schedule_work(&battmgr->enable_work); } else { battmgr->service_up = false; } } static const struct of_device_id qcom_battmgr_of_variants[] = { { .compatible = "qcom,sc8180x-pmic-glink", .data = (void *)QCOM_BATTMGR_SC8280XP }, { .compatible = "qcom,sc8280xp-pmic-glink", .data = (void *)QCOM_BATTMGR_SC8280XP }, { .compatible = "qcom,x1e80100-pmic-glink", .data = (void *)QCOM_BATTMGR_SC8280XP }, /* Unmatched devices falls back to QCOM_BATTMGR_SM8350 */ {} }; static char *qcom_battmgr_battery[] = { "battery" }; static int qcom_battmgr_probe(struct auxiliary_device *adev, const struct auxiliary_device_id *id) { struct power_supply_config psy_cfg_supply = {}; struct power_supply_config psy_cfg = {}; const struct of_device_id *match; struct qcom_battmgr *battmgr; struct device *dev = &adev->dev; battmgr = devm_kzalloc(dev, sizeof(*battmgr), GFP_KERNEL); if (!battmgr) return -ENOMEM; battmgr->dev = dev; psy_cfg.drv_data = battmgr; psy_cfg.of_node = adev->dev.of_node; psy_cfg_supply.drv_data = battmgr; psy_cfg_supply.of_node = adev->dev.of_node; psy_cfg_supply.supplied_to = qcom_battmgr_battery; psy_cfg_supply.num_supplicants = 1; INIT_WORK(&battmgr->enable_work, qcom_battmgr_enable_worker); mutex_init(&battmgr->lock); init_completion(&battmgr->ack); match = of_match_device(qcom_battmgr_of_variants, dev->parent); if (match) battmgr->variant = (unsigned long)match->data; else battmgr->variant = QCOM_BATTMGR_SM8350; if (battmgr->variant == QCOM_BATTMGR_SC8280XP) { battmgr->bat_psy = devm_power_supply_register(dev, &sc8280xp_bat_psy_desc, &psy_cfg); if (IS_ERR(battmgr->bat_psy)) return dev_err_probe(dev, PTR_ERR(battmgr->bat_psy), "failed to register battery power supply\n"); battmgr->ac_psy = devm_power_supply_register(dev, &sc8280xp_ac_psy_desc, &psy_cfg_supply); if (IS_ERR(battmgr->ac_psy)) return dev_err_probe(dev, PTR_ERR(battmgr->ac_psy), "failed to register AC power supply\n"); battmgr->usb_psy = devm_power_supply_register(dev, &sc8280xp_usb_psy_desc, &psy_cfg_supply); if (IS_ERR(battmgr->usb_psy)) return dev_err_probe(dev, PTR_ERR(battmgr->usb_psy), "failed to register USB power supply\n"); battmgr->wls_psy = devm_power_supply_register(dev, &sc8280xp_wls_psy_desc, &psy_cfg_supply); if (IS_ERR(battmgr->wls_psy)) return dev_err_probe(dev, PTR_ERR(battmgr->wls_psy), "failed to register wireless charing power supply\n"); } else { battmgr->bat_psy = devm_power_supply_register(dev, &sm8350_bat_psy_desc, &psy_cfg); if (IS_ERR(battmgr->bat_psy)) return dev_err_probe(dev, PTR_ERR(battmgr->bat_psy), "failed to register battery power supply\n"); battmgr->usb_psy = devm_power_supply_register(dev, &sm8350_usb_psy_desc, &psy_cfg_supply); if (IS_ERR(battmgr->usb_psy)) return dev_err_probe(dev, PTR_ERR(battmgr->usb_psy), "failed to register USB power supply\n"); battmgr->wls_psy = devm_power_supply_register(dev, &sm8350_wls_psy_desc, &psy_cfg_supply); if (IS_ERR(battmgr->wls_psy)) return dev_err_probe(dev, PTR_ERR(battmgr->wls_psy), "failed to register wireless charing power supply\n"); } battmgr->client = devm_pmic_glink_client_alloc(dev, PMIC_GLINK_OWNER_BATTMGR, qcom_battmgr_callback, qcom_battmgr_pdr_notify, battmgr); if (IS_ERR(battmgr->client)) return PTR_ERR(battmgr->client); pmic_glink_client_register(battmgr->client); return 0; } static const struct auxiliary_device_id qcom_battmgr_id_table[] = { { .name = "pmic_glink.power-supply", }, {}, }; MODULE_DEVICE_TABLE(auxiliary, qcom_battmgr_id_table); static struct auxiliary_driver qcom_battmgr_driver = { .name = "pmic_glink_power_supply", .probe = qcom_battmgr_probe, .id_table = qcom_battmgr_id_table, }; module_auxiliary_driver(qcom_battmgr_driver); MODULE_DESCRIPTION("Qualcomm PMIC GLINK battery manager driver"); MODULE_LICENSE("GPL");
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