// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2016-2019 The Linux Foundation. All rights reserved. * Copyright (c) 2023, Linaro Ltd. * Author: Caleb Connolly <[email protected]> * * This driver is for the switch-mode battery charger and boost * hardware found in pmi8998 and related PMICs. */ #include <linux/bits.h> #include <linux/devm-helpers.h> #include <linux/iio/consumer.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/minmax.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/pm_wakeirq.h> #include <linux/of.h> #include <linux/power_supply.h> #include <linux/regmap.h> #include <linux/types.h> #include <linux/workqueue.h> /* clang-format off */ #define BATTERY_CHARGER_STATUS_1 … #define BVR_INITIAL_RAMP_BIT … #define CC_SOFT_TERMINATE_BIT … #define STEP_CHARGING_STATUS_SHIFT … #define STEP_CHARGING_STATUS_MASK … #define BATTERY_CHARGER_STATUS_MASK … #define BATTERY_CHARGER_STATUS_2 … #define INPUT_CURRENT_LIMITED_BIT … #define CHARGER_ERROR_STATUS_SFT_EXPIRE_BIT … #define CHARGER_ERROR_STATUS_BAT_OV_BIT … #define CHARGER_ERROR_STATUS_BAT_TERM_MISSING_BIT … #define BAT_TEMP_STATUS_MASK … #define BAT_TEMP_STATUS_SOFT_LIMIT_MASK … #define BAT_TEMP_STATUS_HOT_SOFT_LIMIT_BIT … #define BAT_TEMP_STATUS_COLD_SOFT_LIMIT_BIT … #define BAT_TEMP_STATUS_TOO_HOT_BIT … #define BAT_TEMP_STATUS_TOO_COLD_BIT … #define BATTERY_CHARGER_STATUS_4 … #define CHARGE_CURRENT_POST_JEITA_MASK … #define BATTERY_CHARGER_STATUS_7 … #define ENABLE_TRICKLE_BIT … #define ENABLE_PRE_CHARGING_BIT … #define ENABLE_FAST_CHARGING_BIT … #define ENABLE_FULLON_MODE_BIT … #define TOO_COLD_ADC_BIT … #define TOO_HOT_ADC_BIT … #define HOT_SL_ADC_BIT … #define COLD_SL_ADC_BIT … #define CHARGING_ENABLE_CMD … #define CHARGING_ENABLE_CMD_BIT … #define CHGR_CFG2 … #define CHG_EN_SRC_BIT … #define CHG_EN_POLARITY_BIT … #define PRETOFAST_TRANSITION_CFG_BIT … #define BAT_OV_ECC_BIT … #define I_TERM_BIT … #define AUTO_RECHG_BIT … #define EN_ANALOG_DROP_IN_VBATT_BIT … #define CHARGER_INHIBIT_BIT … #define PRE_CHARGE_CURRENT_CFG … #define PRE_CHARGE_CURRENT_SETTING_MASK … #define FAST_CHARGE_CURRENT_CFG … #define FAST_CHARGE_CURRENT_SETTING_MASK … #define FLOAT_VOLTAGE_CFG … #define FLOAT_VOLTAGE_SETTING_MASK … #define FG_UPDATE_CFG_2_SEL … #define SOC_LT_OTG_THRESH_SEL_BIT … #define SOC_LT_CHG_RECHARGE_THRESH_SEL_BIT … #define VBT_LT_CHG_RECHARGE_THRESH_SEL_BIT … #define IBT_LT_CHG_TERM_THRESH_SEL_BIT … #define JEITA_EN_CFG … #define JEITA_EN_HARDLIMIT_BIT … #define JEITA_EN_HOT_SL_FCV_BIT … #define JEITA_EN_COLD_SL_FCV_BIT … #define JEITA_EN_HOT_SL_CCC_BIT … #define JEITA_EN_COLD_SL_CCC_BIT … #define INT_RT_STS … #define TYPE_C_CHANGE_RT_STS_BIT … #define USBIN_ICL_CHANGE_RT_STS_BIT … #define USBIN_SOURCE_CHANGE_RT_STS_BIT … #define USBIN_PLUGIN_RT_STS_BIT … #define USBIN_OV_RT_STS_BIT … #define USBIN_UV_RT_STS_BIT … #define USBIN_LT_3P6V_RT_STS_BIT … #define USBIN_COLLAPSE_RT_STS_BIT … #define OTG_CFG … #define OTG_RESERVED_MASK … #define DIS_OTG_ON_TLIM_BIT … #define QUICKSTART_OTG_FASTROLESWAP_BIT … #define INCREASE_DFP_TIME_BIT … #define ENABLE_OTG_IN_DEBUG_MODE_BIT … #define OTG_EN_SRC_CFG_BIT … #define CONCURRENT_MODE_CFG_BIT … #define OTG_ENG_OTG_CFG … #define ENG_BUCKBOOST_HALT1_8_MODE_BIT … #define APSD_STATUS … #define APSD_STATUS_7_BIT … #define HVDCP_CHECK_TIMEOUT_BIT … #define SLOW_PLUGIN_TIMEOUT_BIT … #define ENUMERATION_DONE_BIT … #define VADP_CHANGE_DONE_AFTER_AUTH_BIT … #define QC_AUTH_DONE_STATUS_BIT … #define QC_CHARGER_BIT … #define APSD_DTC_STATUS_DONE_BIT … #define APSD_RESULT_STATUS … #define ICL_OVERRIDE_LATCH_BIT … #define APSD_RESULT_STATUS_MASK … #define QC_3P0_BIT … #define QC_2P0_BIT … #define FLOAT_CHARGER_BIT … #define DCP_CHARGER_BIT … #define CDP_CHARGER_BIT … #define OCP_CHARGER_BIT … #define SDP_CHARGER_BIT … #define TYPE_C_STATUS_1 … #define UFP_TYPEC_MASK … #define UFP_TYPEC_RDSTD_BIT … #define UFP_TYPEC_RD1P5_BIT … #define UFP_TYPEC_RD3P0_BIT … #define UFP_TYPEC_FMB_255K_BIT … #define UFP_TYPEC_FMB_301K_BIT … #define UFP_TYPEC_FMB_523K_BIT … #define UFP_TYPEC_FMB_619K_BIT … #define UFP_TYPEC_OPEN_OPEN_BIT … #define TYPE_C_STATUS_2 … #define DFP_RA_OPEN_BIT … #define TIMER_STAGE_BIT … #define EXIT_UFP_MODE_BIT … #define EXIT_DFP_MODE_BIT … #define DFP_TYPEC_MASK … #define DFP_RD_OPEN_BIT … #define DFP_RD_RA_VCONN_BIT … #define DFP_RD_RD_BIT … #define DFP_RA_RA_BIT … #define TYPE_C_STATUS_3 … #define ENABLE_BANDGAP_BIT … #define U_USB_GND_NOVBUS_BIT … #define U_USB_FLOAT_NOVBUS_BIT … #define U_USB_GND_BIT … #define U_USB_FMB1_BIT … #define U_USB_FLOAT1_BIT … #define U_USB_FMB2_BIT … #define U_USB_FLOAT2_BIT … #define TYPE_C_STATUS_4 … #define UFP_DFP_MODE_STATUS_BIT … #define TYPEC_VBUS_STATUS_BIT … #define TYPEC_VBUS_ERROR_STATUS_BIT … #define TYPEC_DEBOUNCE_DONE_STATUS_BIT … #define TYPEC_UFP_AUDIO_ADAPT_STATUS_BIT … #define TYPEC_VCONN_OVERCURR_STATUS_BIT … #define CC_ORIENTATION_BIT … #define CC_ATTACHED_BIT … #define TYPE_C_STATUS_5 … #define TRY_SOURCE_FAILED_BIT … #define TRY_SINK_FAILED_BIT … #define TIMER_STAGE_2_BIT … #define TYPEC_LEGACY_CABLE_STATUS_BIT … #define TYPEC_NONCOMP_LEGACY_CABLE_STATUS_BIT … #define TYPEC_TRYSOURCE_DETECT_STATUS_BIT … #define TYPEC_TRYSINK_DETECT_STATUS_BIT … #define CMD_APSD … #define ICL_OVERRIDE_BIT … #define APSD_RERUN_BIT … #define TYPE_C_CFG … #define APSD_START_ON_CC_BIT … #define WAIT_FOR_APSD_BIT … #define FACTORY_MODE_DETECTION_EN_BIT … #define FACTORY_MODE_ICL_3A_4A_BIT … #define FACTORY_MODE_DIS_CHGING_CFG_BIT … #define SUSPEND_NON_COMPLIANT_CFG_BIT … #define VCONN_OC_CFG_BIT … #define TYPE_C_OR_U_USB_BIT … #define TYPE_C_CFG_2 … #define TYPE_C_DFP_CURRSRC_MODE_BIT … #define DFP_CC_1P4V_OR_1P6V_BIT … #define VCONN_SOFTSTART_CFG_MASK … #define EN_TRY_SOURCE_MODE_BIT … #define USB_FACTORY_MODE_ENABLE_BIT … #define TYPE_C_UFP_MODE_BIT … #define EN_80UA_180UA_CUR_SOURCE_BIT … #define TYPE_C_CFG_3 … #define TVBUS_DEBOUNCE_BIT … #define TYPEC_LEGACY_CABLE_INT_EN_BIT … #define TYPEC_NONCOMPLIANT_LEGACY_CABLE_INT_EN_B … #define TYPEC_TRYSOURCE_DETECT_INT_EN_BIT … #define TYPEC_TRYSINK_DETECT_INT_EN_BIT … #define EN_TRYSINK_MODE_BIT … #define EN_LEGACY_CABLE_DETECTION_BIT … #define ALLOW_PD_DRING_UFP_TCCDB_BIT … #define USBIN_OPTIONS_1_CFG … #define CABLE_R_SEL_BIT … #define HVDCP_AUTH_ALG_EN_CFG_BIT … #define HVDCP_AUTONOMOUS_MODE_EN_CFG_BIT … #define INPUT_PRIORITY_BIT … #define AUTO_SRC_DETECT_BIT … #define HVDCP_EN_BIT … #define VADP_INCREMENT_VOLTAGE_LIMIT_BIT … #define VADP_TAPER_TIMER_EN_BIT … #define USBIN_OPTIONS_2_CFG … #define WIPWR_RST_EUD_CFG_BIT … #define SWITCHER_START_CFG_BIT … #define DCD_TIMEOUT_SEL_BIT … #define OCD_CURRENT_SEL_BIT … #define SLOW_PLUGIN_TIMER_EN_CFG_BIT … #define FLOAT_OPTIONS_MASK … #define FLOAT_DIS_CHGING_CFG_BIT … #define SUSPEND_FLOAT_CFG_BIT … #define FORCE_FLOAT_SDP_CFG_BIT … #define TAPER_TIMER_SEL_CFG … #define TYPEC_SPARE_CFG_BIT … #define TYPEC_DRP_DFP_TIME_CFG_BIT … #define TAPER_TIMER_SEL_MASK … #define USBIN_LOAD_CFG … #define USBIN_OV_CH_LOAD_OPTION_BIT … #define ICL_OVERRIDE_AFTER_APSD_BIT … #define USBIN_ICL_OPTIONS … #define CFG_USB3P0_SEL_BIT … #define USB51_MODE_BIT … #define USBIN_MODE_CHG_BIT … #define TYPE_C_INTRPT_ENB_SOFTWARE_CTRL … #define EXIT_SNK_BASED_ON_CC_BIT … #define VCONN_EN_ORIENTATION_BIT … #define TYPEC_VCONN_OVERCURR_INT_EN_BIT … #define VCONN_EN_SRC_BIT … #define VCONN_EN_VALUE_BIT … #define TYPEC_POWER_ROLE_CMD_MASK … #define UFP_EN_CMD_BIT … #define DFP_EN_CMD_BIT … #define TYPEC_DISABLE_CMD_BIT … #define USBIN_CURRENT_LIMIT_CFG … #define USBIN_CURRENT_LIMIT_MASK … #define USBIN_AICL_OPTIONS_CFG … #define SUSPEND_ON_COLLAPSE_USBIN_BIT … #define USBIN_AICL_HDC_EN_BIT … #define USBIN_AICL_START_AT_MAX_BIT … #define USBIN_AICL_RERUN_EN_BIT … #define USBIN_AICL_ADC_EN_BIT … #define USBIN_AICL_EN_BIT … #define USBIN_HV_COLLAPSE_RESPONSE_BIT … #define USBIN_LV_COLLAPSE_RESPONSE_BIT … #define USBIN_5V_AICL_THRESHOLD_CFG … #define USBIN_5V_AICL_THRESHOLD_CFG_MASK … #define USBIN_CONT_AICL_THRESHOLD_CFG … #define USBIN_CONT_AICL_THRESHOLD_CFG_MASK … #define DC_ENG_SSUPPLY_CFG2 … #define ENG_SSUPPLY_IVREF_OTG_SS_MASK … #define OTG_SS_SLOW … #define DCIN_AICL_REF_SEL_CFG … #define DCIN_CONT_AICL_THRESHOLD_CFG_MASK … #define WI_PWR_OPTIONS … #define CHG_OK_BIT … #define WIPWR_UVLO_IRQ_OPT_BIT … #define BUCK_HOLDOFF_ENABLE_BIT … #define CHG_OK_HW_SW_SELECT_BIT … #define WIPWR_RST_ENABLE_BIT … #define DCIN_WIPWR_IRQ_SELECT_BIT … #define AICL_SWITCH_ENABLE_BIT … #define ZIN_ICL_ENABLE_BIT … #define ICL_STATUS … #define INPUT_CURRENT_LIMIT_MASK … #define POWER_PATH_STATUS … #define P_PATH_INPUT_SS_DONE_BIT … #define P_PATH_USBIN_SUSPEND_STS_BIT … #define P_PATH_DCIN_SUSPEND_STS_BIT … #define P_PATH_USE_USBIN_BIT … #define P_PATH_USE_DCIN_BIT … #define P_PATH_POWER_PATH_MASK … #define P_PATH_VALID_INPUT_POWER_SOURCE_STS_BIT … #define BARK_BITE_WDOG_PET … #define BARK_BITE_WDOG_PET_BIT … #define WD_CFG … #define WATCHDOG_TRIGGER_AFP_EN_BIT … #define BARK_WDOG_INT_EN_BIT … #define BITE_WDOG_INT_EN_BIT … #define SFT_AFTER_WDOG_IRQ_MASK … #define WDOG_IRQ_SFT_BIT … #define WDOG_TIMER_EN_ON_PLUGIN_BIT … #define WDOG_TIMER_EN_BIT … #define SNARL_BARK_BITE_WD_CFG … #define BITE_WDOG_DISABLE_CHARGING_CFG_BIT … #define SNARL_WDOG_TIMEOUT_MASK … #define BARK_WDOG_TIMEOUT_MASK … #define BITE_WDOG_TIMEOUT_MASK … #define AICL_RERUN_TIME_CFG … #define AICL_RERUN_TIME_MASK … #define STAT_CFG … #define STAT_SW_OVERRIDE_VALUE_BIT … #define STAT_SW_OVERRIDE_CFG_BIT … #define STAT_PARALLEL_OFF_DG_CFG_MASK … #define STAT_POLARITY_CFG_BIT … #define STAT_PARALLEL_CFG_BIT … #define STAT_FUNCTION_CFG_BIT … #define STAT_IRQ_PULSING_EN_BIT … #define SDP_CURRENT_UA … #define CDP_CURRENT_UA … #define DCP_CURRENT_UA … #define CURRENT_MAX_UA … /* pmi8998 registers represent current in increments of 1/40th of an amp */ #define CURRENT_SCALE_FACTOR … /* clang-format on */ enum charger_status { … }; struct smb2_register { … }; /** * struct smb2_chip - smb2 chip structure * @dev: Device reference for power_supply * @name: The platform device name * @base: Base address for smb2 registers * @regmap: Register map * @batt_info: Battery data from DT * @status_change_work: Worker to handle plug/unplug events * @cable_irq: USB plugin IRQ * @wakeup_enabled: If the cable IRQ will cause a wakeup * @usb_in_i_chan: USB_IN current measurement channel * @usb_in_v_chan: USB_IN voltage measurement channel * @chg_psy: Charger power supply instance */ struct smb2_chip { … }; static enum power_supply_property smb2_properties[] = …; static enum power_supply_usb_type smb2_usb_types[] = …; static int smb2_get_prop_usb_online(struct smb2_chip *chip, int *val) { … } /* * Qualcomm "automatic power source detection" aka APSD * tells us what type of charger we're connected to. */ static int smb2_apsd_get_charger_type(struct smb2_chip *chip, int *val) { … } static int smb2_get_prop_status(struct smb2_chip *chip, int *val) { … } static inline int smb2_get_current_limit(struct smb2_chip *chip, unsigned int *val) { … } static int smb2_set_current_limit(struct smb2_chip *chip, unsigned int val) { … } static void smb2_status_change_work(struct work_struct *work) { … } static int smb2_get_iio_chan(struct smb2_chip *chip, struct iio_channel *chan, int *val) { … } static int smb2_get_prop_health(struct smb2_chip *chip, int *val) { … } static int smb2_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static int smb2_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { … } static int smb2_property_is_writable(struct power_supply *psy, enum power_supply_property psp) { … } static irqreturn_t smb2_handle_batt_overvoltage(int irq, void *data) { … } static irqreturn_t smb2_handle_usb_plugin(int irq, void *data) { … } static irqreturn_t smb2_handle_usb_icl_change(int irq, void *data) { … } static irqreturn_t smb2_handle_wdog_bark(int irq, void *data) { … } static const struct power_supply_desc smb2_psy_desc = …; /* Init sequence derived from vendor downstream driver */ static const struct smb2_register smb2_init_seq[] = …; static int smb2_init_hw(struct smb2_chip *chip) { … } static int smb2_init_irq(struct smb2_chip *chip, int *irq, const char *name, irqreturn_t (*handler)(int irq, void *data)) { … } static int smb2_probe(struct platform_device *pdev) { … } static const struct of_device_id smb2_match_id_table[] = …; MODULE_DEVICE_TABLE(of, smb2_match_id_table); static struct platform_driver qcom_spmi_smb2 = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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