diff options
Diffstat (limited to 'drivers/power/supply/qcom_pmi8998_charger.c')
| -rw-r--r-- | drivers/power/supply/qcom_pmi8998_charger.c | 1050 |
1 files changed, 0 insertions, 1050 deletions
diff --git a/drivers/power/supply/qcom_pmi8998_charger.c b/drivers/power/supply/qcom_pmi8998_charger.c deleted file mode 100644 index 74a8d8ed8d9f..000000000000 --- a/drivers/power/supply/qcom_pmi8998_charger.c +++ /dev/null @@ -1,1050 +0,0 @@ -// 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 <caleb.connolly@linaro.org> - * - * 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 0x06 -#define BVR_INITIAL_RAMP_BIT BIT(7) -#define CC_SOFT_TERMINATE_BIT BIT(6) -#define STEP_CHARGING_STATUS_SHIFT 3 -#define STEP_CHARGING_STATUS_MASK GENMASK(5, 3) -#define BATTERY_CHARGER_STATUS_MASK GENMASK(2, 0) - -#define BATTERY_CHARGER_STATUS_2 0x07 -#define INPUT_CURRENT_LIMITED_BIT BIT(7) -#define CHARGER_ERROR_STATUS_SFT_EXPIRE_BIT BIT(6) -#define CHARGER_ERROR_STATUS_BAT_OV_BIT BIT(5) -#define CHARGER_ERROR_STATUS_BAT_TERM_MISSING_BIT BIT(4) -#define BAT_TEMP_STATUS_MASK GENMASK(3, 0) -#define BAT_TEMP_STATUS_SOFT_LIMIT_MASK GENMASK(3, 2) -#define BAT_TEMP_STATUS_HOT_SOFT_LIMIT_BIT BIT(3) -#define BAT_TEMP_STATUS_COLD_SOFT_LIMIT_BIT BIT(2) -#define BAT_TEMP_STATUS_TOO_HOT_BIT BIT(1) -#define BAT_TEMP_STATUS_TOO_COLD_BIT BIT(0) - -#define BATTERY_CHARGER_STATUS_4 0x0A -#define CHARGE_CURRENT_POST_JEITA_MASK GENMASK(7, 0) - -#define BATTERY_CHARGER_STATUS_7 0x0D -#define ENABLE_TRICKLE_BIT BIT(7) -#define ENABLE_PRE_CHARGING_BIT BIT(6) -#define ENABLE_FAST_CHARGING_BIT BIT(5) -#define ENABLE_FULLON_MODE_BIT BIT(4) -#define TOO_COLD_ADC_BIT BIT(3) -#define TOO_HOT_ADC_BIT BIT(2) -#define HOT_SL_ADC_BIT BIT(1) -#define COLD_SL_ADC_BIT BIT(0) - -#define CHARGING_ENABLE_CMD 0x42 -#define CHARGING_ENABLE_CMD_BIT BIT(0) - -#define CHGR_CFG2 0x51 -#define CHG_EN_SRC_BIT BIT(7) -#define CHG_EN_POLARITY_BIT BIT(6) -#define PRETOFAST_TRANSITION_CFG_BIT BIT(5) -#define BAT_OV_ECC_BIT BIT(4) -#define I_TERM_BIT BIT(3) -#define AUTO_RECHG_BIT BIT(2) -#define EN_ANALOG_DROP_IN_VBATT_BIT BIT(1) -#define CHARGER_INHIBIT_BIT BIT(0) - -#define PRE_CHARGE_CURRENT_CFG 0x60 -#define PRE_CHARGE_CURRENT_SETTING_MASK GENMASK(5, 0) - -#define FAST_CHARGE_CURRENT_CFG 0x61 -#define FAST_CHARGE_CURRENT_SETTING_MASK GENMASK(7, 0) - -#define FLOAT_VOLTAGE_CFG 0x70 -#define FLOAT_VOLTAGE_SETTING_MASK GENMASK(7, 0) - -#define FG_UPDATE_CFG_2_SEL 0x7D -#define SOC_LT_OTG_THRESH_SEL_BIT BIT(3) -#define SOC_LT_CHG_RECHARGE_THRESH_SEL_BIT BIT(2) -#define VBT_LT_CHG_RECHARGE_THRESH_SEL_BIT BIT(1) -#define IBT_LT_CHG_TERM_THRESH_SEL_BIT BIT(0) - -#define JEITA_EN_CFG 0x90 -#define JEITA_EN_HARDLIMIT_BIT BIT(4) -#define JEITA_EN_HOT_SL_FCV_BIT BIT(3) -#define JEITA_EN_COLD_SL_FCV_BIT BIT(2) -#define JEITA_EN_HOT_SL_CCC_BIT BIT(1) -#define JEITA_EN_COLD_SL_CCC_BIT BIT(0) - -#define INT_RT_STS 0x310 -#define TYPE_C_CHANGE_RT_STS_BIT BIT(7) -#define USBIN_ICL_CHANGE_RT_STS_BIT BIT(6) -#define USBIN_SOURCE_CHANGE_RT_STS_BIT BIT(5) -#define USBIN_PLUGIN_RT_STS_BIT BIT(4) -#define USBIN_OV_RT_STS_BIT BIT(3) -#define USBIN_UV_RT_STS_BIT BIT(2) -#define USBIN_LT_3P6V_RT_STS_BIT BIT(1) -#define USBIN_COLLAPSE_RT_STS_BIT BIT(0) - -#define OTG_CFG 0x153 -#define OTG_RESERVED_MASK GENMASK(7, 6) -#define DIS_OTG_ON_TLIM_BIT BIT(5) -#define QUICKSTART_OTG_FASTROLESWAP_BIT BIT(4) -#define INCREASE_DFP_TIME_BIT BIT(3) -#define ENABLE_OTG_IN_DEBUG_MODE_BIT BIT(2) -#define OTG_EN_SRC_CFG_BIT BIT(1) -#define CONCURRENT_MODE_CFG_BIT BIT(0) - -#define OTG_ENG_OTG_CFG 0x1C0 -#define ENG_BUCKBOOST_HALT1_8_MODE_BIT BIT(0) - -#define APSD_STATUS 0x307 -#define APSD_STATUS_7_BIT BIT(7) -#define HVDCP_CHECK_TIMEOUT_BIT BIT(6) -#define SLOW_PLUGIN_TIMEOUT_BIT BIT(5) -#define ENUMERATION_DONE_BIT BIT(4) -#define VADP_CHANGE_DONE_AFTER_AUTH_BIT BIT(3) -#define QC_AUTH_DONE_STATUS_BIT BIT(2) -#define QC_CHARGER_BIT BIT(1) -#define APSD_DTC_STATUS_DONE_BIT BIT(0) - -#define APSD_RESULT_STATUS 0x308 -#define ICL_OVERRIDE_LATCH_BIT BIT(7) -#define APSD_RESULT_STATUS_MASK GENMASK(6, 0) -#define QC_3P0_BIT BIT(6) -#define QC_2P0_BIT BIT(5) -#define FLOAT_CHARGER_BIT BIT(4) -#define DCP_CHARGER_BIT BIT(3) -#define CDP_CHARGER_BIT BIT(2) -#define OCP_CHARGER_BIT BIT(1) -#define SDP_CHARGER_BIT BIT(0) - -#define TYPE_C_STATUS_1 0x30B -#define UFP_TYPEC_MASK GENMASK(7, 5) -#define UFP_TYPEC_RDSTD_BIT BIT(7) -#define UFP_TYPEC_RD1P5_BIT BIT(6) -#define UFP_TYPEC_RD3P0_BIT BIT(5) -#define UFP_TYPEC_FMB_255K_BIT BIT(4) -#define UFP_TYPEC_FMB_301K_BIT BIT(3) -#define UFP_TYPEC_FMB_523K_BIT BIT(2) -#define UFP_TYPEC_FMB_619K_BIT BIT(1) -#define UFP_TYPEC_OPEN_OPEN_BIT BIT(0) - -#define TYPE_C_STATUS_2 0x30C -#define DFP_RA_OPEN_BIT BIT(7) -#define TIMER_STAGE_BIT BIT(6) -#define EXIT_UFP_MODE_BIT BIT(5) -#define EXIT_DFP_MODE_BIT BIT(4) -#define DFP_TYPEC_MASK GENMASK(3, 0) -#define DFP_RD_OPEN_BIT BIT(3) -#define DFP_RD_RA_VCONN_BIT BIT(2) -#define DFP_RD_RD_BIT BIT(1) -#define DFP_RA_RA_BIT BIT(0) - -#define TYPE_C_STATUS_3 0x30D -#define ENABLE_BANDGAP_BIT BIT(7) -#define U_USB_GND_NOVBUS_BIT BIT(6) -#define U_USB_FLOAT_NOVBUS_BIT BIT(5) -#define U_USB_GND_BIT BIT(4) -#define U_USB_FMB1_BIT BIT(3) -#define U_USB_FLOAT1_BIT BIT(2) -#define U_USB_FMB2_BIT BIT(1) -#define U_USB_FLOAT2_BIT BIT(0) - -#define TYPE_C_STATUS_4 0x30E -#define UFP_DFP_MODE_STATUS_BIT BIT(7) -#define TYPEC_VBUS_STATUS_BIT BIT(6) -#define TYPEC_VBUS_ERROR_STATUS_BIT BIT(5) -#define TYPEC_DEBOUNCE_DONE_STATUS_BIT BIT(4) -#define TYPEC_UFP_AUDIO_ADAPT_STATUS_BIT BIT(3) -#define TYPEC_VCONN_OVERCURR_STATUS_BIT BIT(2) -#define CC_ORIENTATION_BIT BIT(1) -#define CC_ATTACHED_BIT BIT(0) - -#define TYPE_C_STATUS_5 0x30F -#define TRY_SOURCE_FAILED_BIT BIT(6) -#define TRY_SINK_FAILED_BIT BIT(5) -#define TIMER_STAGE_2_BIT BIT(4) -#define TYPEC_LEGACY_CABLE_STATUS_BIT BIT(3) -#define TYPEC_NONCOMP_LEGACY_CABLE_STATUS_BIT BIT(2) -#define TYPEC_TRYSOURCE_DETECT_STATUS_BIT BIT(1) -#define TYPEC_TRYSINK_DETECT_STATUS_BIT BIT(0) - -#define CMD_APSD 0x341 -#define ICL_OVERRIDE_BIT BIT(1) -#define APSD_RERUN_BIT BIT(0) - -#define TYPE_C_CFG 0x358 -#define APSD_START_ON_CC_BIT BIT(7) -#define WAIT_FOR_APSD_BIT BIT(6) -#define FACTORY_MODE_DETECTION_EN_BIT BIT(5) -#define FACTORY_MODE_ICL_3A_4A_BIT BIT(4) -#define FACTORY_MODE_DIS_CHGING_CFG_BIT BIT(3) -#define SUSPEND_NON_COMPLIANT_CFG_BIT BIT(2) -#define VCONN_OC_CFG_BIT BIT(1) -#define TYPE_C_OR_U_USB_BIT BIT(0) - -#define TYPE_C_CFG_2 0x359 -#define TYPE_C_DFP_CURRSRC_MODE_BIT BIT(7) -#define DFP_CC_1P4V_OR_1P6V_BIT BIT(6) -#define VCONN_SOFTSTART_CFG_MASK GENMASK(5, 4) -#define EN_TRY_SOURCE_MODE_BIT BIT(3) -#define USB_FACTORY_MODE_ENABLE_BIT BIT(2) -#define TYPE_C_UFP_MODE_BIT BIT(1) -#define EN_80UA_180UA_CUR_SOURCE_BIT BIT(0) - -#define TYPE_C_CFG_3 0x35A -#define TVBUS_DEBOUNCE_BIT BIT(7) -#define TYPEC_LEGACY_CABLE_INT_EN_BIT BIT(6) -#define TYPEC_NONCOMPLIANT_LEGACY_CABLE_INT_EN_B BIT(5) -#define TYPEC_TRYSOURCE_DETECT_INT_EN_BIT BIT(4) -#define TYPEC_TRYSINK_DETECT_INT_EN_BIT BIT(3) -#define EN_TRYSINK_MODE_BIT BIT(2) -#define EN_LEGACY_CABLE_DETECTION_BIT BIT(1) -#define ALLOW_PD_DRING_UFP_TCCDB_BIT BIT(0) - -#define USBIN_OPTIONS_1_CFG 0x362 -#define CABLE_R_SEL_BIT BIT(7) -#define HVDCP_AUTH_ALG_EN_CFG_BIT BIT(6) -#define HVDCP_AUTONOMOUS_MODE_EN_CFG_BIT BIT(5) -#define INPUT_PRIORITY_BIT BIT(4) -#define AUTO_SRC_DETECT_BIT BIT(3) -#define HVDCP_EN_BIT BIT(2) -#define VADP_INCREMENT_VOLTAGE_LIMIT_BIT BIT(1) -#define VADP_TAPER_TIMER_EN_BIT BIT(0) - -#define USBIN_OPTIONS_2_CFG 0x363 -#define WIPWR_RST_EUD_CFG_BIT BIT(7) -#define SWITCHER_START_CFG_BIT BIT(6) -#define DCD_TIMEOUT_SEL_BIT BIT(5) -#define OCD_CURRENT_SEL_BIT BIT(4) -#define SLOW_PLUGIN_TIMER_EN_CFG_BIT BIT(3) -#define FLOAT_OPTIONS_MASK GENMASK(2, 0) -#define FLOAT_DIS_CHGING_CFG_BIT BIT(2) -#define SUSPEND_FLOAT_CFG_BIT BIT(1) -#define FORCE_FLOAT_SDP_CFG_BIT BIT(0) - -#define TAPER_TIMER_SEL_CFG 0x364 -#define TYPEC_SPARE_CFG_BIT BIT(7) -#define TYPEC_DRP_DFP_TIME_CFG_BIT BIT(5) -#define TAPER_TIMER_SEL_MASK GENMASK(1, 0) - -#define USBIN_LOAD_CFG 0x365 -#define USBIN_OV_CH_LOAD_OPTION_BIT BIT(7) -#define ICL_OVERRIDE_AFTER_APSD_BIT BIT(4) - -#define USBIN_ICL_OPTIONS 0x366 -#define CFG_USB3P0_SEL_BIT BIT(2) -#define USB51_MODE_BIT BIT(1) -#define USBIN_MODE_CHG_BIT BIT(0) - -#define TYPE_C_INTRPT_ENB_SOFTWARE_CTRL 0x368 -#define EXIT_SNK_BASED_ON_CC_BIT BIT(7) -#define VCONN_EN_ORIENTATION_BIT BIT(6) -#define TYPEC_VCONN_OVERCURR_INT_EN_BIT BIT(5) -#define VCONN_EN_SRC_BIT BIT(4) -#define VCONN_EN_VALUE_BIT BIT(3) -#define TYPEC_POWER_ROLE_CMD_MASK GENMASK(2, 0) -#define UFP_EN_CMD_BIT BIT(2) -#define DFP_EN_CMD_BIT BIT(1) -#define TYPEC_DISABLE_CMD_BIT BIT(0) - -#define USBIN_CURRENT_LIMIT_CFG 0x370 -#define USBIN_CURRENT_LIMIT_MASK GENMASK(7, 0) - -#define USBIN_AICL_OPTIONS_CFG 0x380 -#define SUSPEND_ON_COLLAPSE_USBIN_BIT BIT(7) -#define USBIN_AICL_HDC_EN_BIT BIT(6) -#define USBIN_AICL_START_AT_MAX_BIT BIT(5) -#define USBIN_AICL_RERUN_EN_BIT BIT(4) -#define USBIN_AICL_ADC_EN_BIT BIT(3) -#define USBIN_AICL_EN_BIT BIT(2) -#define USBIN_HV_COLLAPSE_RESPONSE_BIT BIT(1) -#define USBIN_LV_COLLAPSE_RESPONSE_BIT BIT(0) - -#define USBIN_5V_AICL_THRESHOLD_CFG 0x381 -#define USBIN_5V_AICL_THRESHOLD_CFG_MASK GENMASK(2, 0) - -#define USBIN_CONT_AICL_THRESHOLD_CFG 0x384 -#define USBIN_CONT_AICL_THRESHOLD_CFG_MASK GENMASK(5, 0) - -#define DC_ENG_SSUPPLY_CFG2 0x4C1 -#define ENG_SSUPPLY_IVREF_OTG_SS_MASK GENMASK(2, 0) -#define OTG_SS_SLOW 0x3 - -#define DCIN_AICL_REF_SEL_CFG 0x481 -#define DCIN_CONT_AICL_THRESHOLD_CFG_MASK GENMASK(5, 0) - -#define WI_PWR_OPTIONS 0x495 -#define CHG_OK_BIT BIT(7) -#define WIPWR_UVLO_IRQ_OPT_BIT BIT(6) -#define BUCK_HOLDOFF_ENABLE_BIT BIT(5) -#define CHG_OK_HW_SW_SELECT_BIT BIT(4) -#define WIPWR_RST_ENABLE_BIT BIT(3) -#define DCIN_WIPWR_IRQ_SELECT_BIT BIT(2) -#define AICL_SWITCH_ENABLE_BIT BIT(1) -#define ZIN_ICL_ENABLE_BIT BIT(0) - -#define ICL_STATUS 0x607 -#define INPUT_CURRENT_LIMIT_MASK GENMASK(7, 0) - -#define POWER_PATH_STATUS 0x60B -#define P_PATH_INPUT_SS_DONE_BIT BIT(7) -#define P_PATH_USBIN_SUSPEND_STS_BIT BIT(6) -#define P_PATH_DCIN_SUSPEND_STS_BIT BIT(5) -#define P_PATH_USE_USBIN_BIT BIT(4) -#define P_PATH_USE_DCIN_BIT BIT(3) -#define P_PATH_POWER_PATH_MASK GENMASK(2, 1) -#define P_PATH_VALID_INPUT_POWER_SOURCE_STS_BIT BIT(0) - -#define BARK_BITE_WDOG_PET 0x643 -#define BARK_BITE_WDOG_PET_BIT BIT(0) - -#define WD_CFG 0x651 -#define WATCHDOG_TRIGGER_AFP_EN_BIT BIT(7) -#define BARK_WDOG_INT_EN_BIT BIT(6) -#define BITE_WDOG_INT_EN_BIT BIT(5) -#define SFT_AFTER_WDOG_IRQ_MASK GENMASK(4, 3) -#define WDOG_IRQ_SFT_BIT BIT(2) -#define WDOG_TIMER_EN_ON_PLUGIN_BIT BIT(1) -#define WDOG_TIMER_EN_BIT BIT(0) - -#define SNARL_BARK_BITE_WD_CFG 0x653 -#define BITE_WDOG_DISABLE_CHARGING_CFG_BIT BIT(7) -#define SNARL_WDOG_TIMEOUT_MASK GENMASK(6, 4) -#define BARK_WDOG_TIMEOUT_MASK GENMASK(3, 2) -#define BITE_WDOG_TIMEOUT_MASK GENMASK(1, 0) - -#define AICL_RERUN_TIME_CFG 0x661 -#define AICL_RERUN_TIME_MASK GENMASK(1, 0) - -#define STAT_CFG 0x690 -#define STAT_SW_OVERRIDE_VALUE_BIT BIT(7) -#define STAT_SW_OVERRIDE_CFG_BIT BIT(6) -#define STAT_PARALLEL_OFF_DG_CFG_MASK GENMASK(5, 4) -#define STAT_POLARITY_CFG_BIT BIT(3) -#define STAT_PARALLEL_CFG_BIT BIT(2) -#define STAT_FUNCTION_CFG_BIT BIT(1) -#define STAT_IRQ_PULSING_EN_BIT BIT(0) - -#define SDP_CURRENT_UA 500000 -#define CDP_CURRENT_UA 1500000 -#define DCP_CURRENT_UA 1500000 -#define CURRENT_MAX_UA DCP_CURRENT_UA - -/* pmi8998 registers represent current in increments of 1/40th of an amp */ -#define CURRENT_SCALE_FACTOR 25000 -/* clang-format on */ - -enum charger_status { - TRICKLE_CHARGE = 0, - PRE_CHARGE, - FAST_CHARGE, - FULLON_CHARGE, - TAPER_CHARGE, - TERMINATE_CHARGE, - INHIBIT_CHARGE, - DISABLE_CHARGE, -}; - -struct smb2_register { - u16 addr; - u8 mask; - u8 val; -}; - -/** - * 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 { - struct device *dev; - const char *name; - unsigned int base; - struct regmap *regmap; - struct power_supply_battery_info *batt_info; - - struct delayed_work status_change_work; - int cable_irq; - bool wakeup_enabled; - - struct iio_channel *usb_in_i_chan; - struct iio_channel *usb_in_v_chan; - - struct power_supply *chg_psy; -}; - -static enum power_supply_property smb2_properties[] = { - POWER_SUPPLY_PROP_MANUFACTURER, - POWER_SUPPLY_PROP_MODEL_NAME, - POWER_SUPPLY_PROP_CURRENT_MAX, - POWER_SUPPLY_PROP_CURRENT_NOW, - POWER_SUPPLY_PROP_VOLTAGE_NOW, - POWER_SUPPLY_PROP_STATUS, - POWER_SUPPLY_PROP_HEALTH, - POWER_SUPPLY_PROP_ONLINE, - POWER_SUPPLY_PROP_USB_TYPE, -}; - -static int smb2_get_prop_usb_online(struct smb2_chip *chip, int *val) -{ - unsigned int stat; - int rc; - - rc = regmap_read(chip->regmap, chip->base + POWER_PATH_STATUS, &stat); - if (rc < 0) { - dev_err(chip->dev, "Couldn't read power path status: %d\n", rc); - return rc; - } - - *val = (stat & P_PATH_USE_USBIN_BIT) && - (stat & P_PATH_VALID_INPUT_POWER_SOURCE_STS_BIT); - return 0; -} - -/* - * 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) -{ - unsigned int apsd_stat, stat; - int usb_online = 0; - int rc; - - rc = smb2_get_prop_usb_online(chip, &usb_online); - if (!usb_online) { - *val = POWER_SUPPLY_USB_TYPE_UNKNOWN; - return rc; - } - - rc = regmap_read(chip->regmap, chip->base + APSD_STATUS, &apsd_stat); - if (rc < 0) { - dev_err(chip->dev, "Failed to read apsd status, rc = %d", rc); - return rc; - } - if (!(apsd_stat & APSD_DTC_STATUS_DONE_BIT)) { - dev_dbg(chip->dev, "Apsd not ready"); - return -EAGAIN; - } - - rc = regmap_read(chip->regmap, chip->base + APSD_RESULT_STATUS, &stat); - if (rc < 0) { - dev_err(chip->dev, "Failed to read apsd result, rc = %d", rc); - return rc; - } - - stat &= APSD_RESULT_STATUS_MASK; - - if (stat & CDP_CHARGER_BIT) - *val = POWER_SUPPLY_USB_TYPE_CDP; - else if (stat & (DCP_CHARGER_BIT | OCP_CHARGER_BIT | FLOAT_CHARGER_BIT)) - *val = POWER_SUPPLY_USB_TYPE_DCP; - else /* SDP_CHARGER_BIT (or others) */ - *val = POWER_SUPPLY_USB_TYPE_SDP; - - return 0; -} - -static int smb2_get_prop_status(struct smb2_chip *chip, int *val) -{ - unsigned char stat[2]; - int usb_online = 0; - int rc; - - rc = smb2_get_prop_usb_online(chip, &usb_online); - if (!usb_online) { - *val = POWER_SUPPLY_STATUS_DISCHARGING; - return rc; - } - - rc = regmap_bulk_read(chip->regmap, - chip->base + BATTERY_CHARGER_STATUS_1, &stat, 2); - if (rc < 0) { - dev_err(chip->dev, "Failed to read charging status ret=%d\n", - rc); - return rc; - } - - if (stat[1] & CHARGER_ERROR_STATUS_BAT_OV_BIT) { - *val = POWER_SUPPLY_STATUS_NOT_CHARGING; - return 0; - } - - stat[0] = stat[0] & BATTERY_CHARGER_STATUS_MASK; - - switch (stat[0]) { - case TRICKLE_CHARGE: - case PRE_CHARGE: - case FAST_CHARGE: - case FULLON_CHARGE: - case TAPER_CHARGE: - *val = POWER_SUPPLY_STATUS_CHARGING; - return rc; - case DISABLE_CHARGE: - *val = POWER_SUPPLY_STATUS_NOT_CHARGING; - return rc; - case TERMINATE_CHARGE: - case INHIBIT_CHARGE: - *val = POWER_SUPPLY_STATUS_FULL; - return rc; - default: - *val = POWER_SUPPLY_STATUS_UNKNOWN; - return rc; - } -} - -static inline int smb2_get_current_limit(struct smb2_chip *chip, - unsigned int *val) -{ - int rc = regmap_read(chip->regmap, chip->base + ICL_STATUS, val); - - if (rc >= 0) - *val *= CURRENT_SCALE_FACTOR; - return rc; -} - -static int smb2_set_current_limit(struct smb2_chip *chip, unsigned int val) -{ - unsigned char val_raw; - - if (val > 4800000) { - dev_err(chip->dev, - "Can't set current limit higher than 4800000uA"); - return -EINVAL; - } - val_raw = val / CURRENT_SCALE_FACTOR; - - return regmap_write(chip->regmap, chip->base + USBIN_CURRENT_LIMIT_CFG, - val_raw); -} - -static void smb2_status_change_work(struct work_struct *work) -{ - unsigned int charger_type, current_ua; - int usb_online = 0; - int count, rc; - struct smb2_chip *chip; - - chip = container_of(work, struct smb2_chip, status_change_work.work); - - smb2_get_prop_usb_online(chip, &usb_online); - if (!usb_online) - return; - - for (count = 0; count < 3; count++) { - dev_dbg(chip->dev, "get charger type retry %d\n", count); - rc = smb2_apsd_get_charger_type(chip, &charger_type); - if (rc != -EAGAIN) - break; - msleep(100); - } - - if (rc < 0 && rc != -EAGAIN) { - dev_err(chip->dev, "get charger type failed: %d\n", rc); - return; - } - - if (rc < 0) { - rc = regmap_update_bits(chip->regmap, chip->base + CMD_APSD, - APSD_RERUN_BIT, APSD_RERUN_BIT); - schedule_delayed_work(&chip->status_change_work, - msecs_to_jiffies(1000)); - dev_dbg(chip->dev, "get charger type failed, rerun apsd\n"); - return; - } - - switch (charger_type) { - case POWER_SUPPLY_USB_TYPE_CDP: - current_ua = CDP_CURRENT_UA; - break; - case POWER_SUPPLY_USB_TYPE_DCP: - current_ua = DCP_CURRENT_UA; - break; - case POWER_SUPPLY_USB_TYPE_SDP: - default: - current_ua = SDP_CURRENT_UA; - break; - } - - smb2_set_current_limit(chip, current_ua); - power_supply_changed(chip->chg_psy); -} - -static int smb2_get_iio_chan(struct smb2_chip *chip, struct iio_channel *chan, - int *val) -{ - int rc; - union power_supply_propval status; - - rc = power_supply_get_property(chip->chg_psy, POWER_SUPPLY_PROP_STATUS, - &status); - if (rc < 0 || status.intval != POWER_SUPPLY_STATUS_CHARGING) { - *val = 0; - return 0; - } - - if (IS_ERR(chan)) { - dev_err(chip->dev, "Failed to chan, err = %li", PTR_ERR(chan)); - return PTR_ERR(chan); - } - - return iio_read_channel_processed(chan, val); -} - -static int smb2_get_prop_health(struct smb2_chip *chip, int *val) -{ - int rc; - unsigned int stat; - - rc = regmap_read(chip->regmap, chip->base + BATTERY_CHARGER_STATUS_2, - &stat); - if (rc < 0) { - dev_err(chip->dev, "Couldn't read charger status rc=%d\n", rc); - return rc; - } - - switch (stat) { - case CHARGER_ERROR_STATUS_BAT_OV_BIT: - *val = POWER_SUPPLY_HEALTH_OVERVOLTAGE; - return 0; - case BAT_TEMP_STATUS_TOO_COLD_BIT: - *val = POWER_SUPPLY_HEALTH_COLD; - return 0; - case BAT_TEMP_STATUS_TOO_HOT_BIT: - *val = POWER_SUPPLY_HEALTH_OVERHEAT; - return 0; - case BAT_TEMP_STATUS_COLD_SOFT_LIMIT_BIT: - *val = POWER_SUPPLY_HEALTH_COOL; - return 0; - case BAT_TEMP_STATUS_HOT_SOFT_LIMIT_BIT: - *val = POWER_SUPPLY_HEALTH_WARM; - return 0; - default: - *val = POWER_SUPPLY_HEALTH_GOOD; - return 0; - } -} - -static int smb2_get_property(struct power_supply *psy, - enum power_supply_property psp, - union power_supply_propval *val) -{ - struct smb2_chip *chip = power_supply_get_drvdata(psy); - - switch (psp) { - case POWER_SUPPLY_PROP_MANUFACTURER: - val->strval = "Qualcomm"; - return 0; - case POWER_SUPPLY_PROP_MODEL_NAME: - val->strval = chip->name; - return 0; - case POWER_SUPPLY_PROP_CURRENT_MAX: - return smb2_get_current_limit(chip, &val->intval); - case POWER_SUPPLY_PROP_CURRENT_NOW: - return smb2_get_iio_chan(chip, chip->usb_in_i_chan, - &val->intval); - case POWER_SUPPLY_PROP_VOLTAGE_NOW: - return smb2_get_iio_chan(chip, chip->usb_in_v_chan, - &val->intval); - case POWER_SUPPLY_PROP_ONLINE: - return smb2_get_prop_usb_online(chip, &val->intval); - case POWER_SUPPLY_PROP_STATUS: - return smb2_get_prop_status(chip, &val->intval); - case POWER_SUPPLY_PROP_HEALTH: - return smb2_get_prop_health(chip, &val->intval); - case POWER_SUPPLY_PROP_USB_TYPE: - return smb2_apsd_get_charger_type(chip, &val->intval); - default: - dev_err(chip->dev, "invalid property: %d\n", psp); - return -EINVAL; - } -} - -static int smb2_set_property(struct power_supply *psy, - enum power_supply_property psp, - const union power_supply_propval *val) -{ - struct smb2_chip *chip = power_supply_get_drvdata(psy); - - switch (psp) { - case POWER_SUPPLY_PROP_CURRENT_MAX: - return smb2_set_current_limit(chip, val->intval); - default: - dev_err(chip->dev, "No setter for property: %d\n", psp); - return -EINVAL; - } -} - -static int smb2_property_is_writable(struct power_supply *psy, - enum power_supply_property psp) -{ - switch (psp) { - case POWER_SUPPLY_PROP_CURRENT_MAX: - return 1; - default: - return 0; - } -} - -static irqreturn_t smb2_handle_batt_overvoltage(int irq, void *data) -{ - struct smb2_chip *chip = data; - unsigned int status; - - regmap_read(chip->regmap, chip->base + BATTERY_CHARGER_STATUS_2, - &status); - - if (status & CHARGER_ERROR_STATUS_BAT_OV_BIT) { - /* The hardware stops charging automatically */ - dev_err(chip->dev, "battery overvoltage detected\n"); - power_supply_changed(chip->chg_psy); - } - - return IRQ_HANDLED; -} - -static irqreturn_t smb2_handle_usb_plugin(int irq, void *data) -{ - struct smb2_chip *chip = data; - - power_supply_changed(chip->chg_psy); - - schedule_delayed_work(&chip->status_change_work, - msecs_to_jiffies(1500)); - - return IRQ_HANDLED; -} - -static irqreturn_t smb2_handle_usb_icl_change(int irq, void *data) -{ - struct smb2_chip *chip = data; - - power_supply_changed(chip->chg_psy); - - return IRQ_HANDLED; -} - -static irqreturn_t smb2_handle_wdog_bark(int irq, void *data) -{ - struct smb2_chip *chip = data; - int rc; - - power_supply_changed(chip->chg_psy); - - rc = regmap_write(chip->regmap, BARK_BITE_WDOG_PET, - BARK_BITE_WDOG_PET_BIT); - if (rc < 0) - dev_err(chip->dev, "Couldn't pet the dog rc=%d\n", rc); - - return IRQ_HANDLED; -} - -static const struct power_supply_desc smb2_psy_desc = { - .name = "pmi8998_charger", - .type = POWER_SUPPLY_TYPE_USB, - .usb_types = BIT(POWER_SUPPLY_USB_TYPE_SDP) | - BIT(POWER_SUPPLY_USB_TYPE_CDP) | - BIT(POWER_SUPPLY_USB_TYPE_DCP) | - BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN), - .properties = smb2_properties, - .num_properties = ARRAY_SIZE(smb2_properties), - .get_property = smb2_get_property, - .set_property = smb2_set_property, - .property_is_writeable = smb2_property_is_writable, -}; - -/* Init sequence derived from vendor downstream driver */ -static const struct smb2_register smb2_init_seq[] = { - { .addr = AICL_RERUN_TIME_CFG, .mask = AICL_RERUN_TIME_MASK, .val = 0 }, - /* - * By default configure us as an upstream facing port - * FIXME: This will be handled by the type-c driver - */ - { .addr = TYPE_C_INTRPT_ENB_SOFTWARE_CTRL, - .mask = TYPEC_POWER_ROLE_CMD_MASK | VCONN_EN_SRC_BIT | - VCONN_EN_VALUE_BIT, - .val = VCONN_EN_SRC_BIT }, - /* - * Disable Type-C factory mode and stay in Attached.SRC state when VCONN - * over-current happens - */ - { .addr = TYPE_C_CFG, - .mask = FACTORY_MODE_DETECTION_EN_BIT | VCONN_OC_CFG_BIT, - .val = 0 }, - /* Configure VBUS for software control */ - { .addr = OTG_CFG, .mask = OTG_EN_SRC_CFG_BIT, .val = 0 }, - /* - * Use VBAT to determine the recharge threshold when battery is full - * rather than the state of charge. - */ - { .addr = FG_UPDATE_CFG_2_SEL, - .mask = SOC_LT_CHG_RECHARGE_THRESH_SEL_BIT | - VBT_LT_CHG_RECHARGE_THRESH_SEL_BIT, - .val = VBT_LT_CHG_RECHARGE_THRESH_SEL_BIT }, - /* Enable charging */ - { .addr = USBIN_OPTIONS_1_CFG, .mask = HVDCP_EN_BIT, .val = 0 }, - { .addr = CHARGING_ENABLE_CMD, - .mask = CHARGING_ENABLE_CMD_BIT, - .val = CHARGING_ENABLE_CMD_BIT }, - /* - * Match downstream defaults - * CHG_EN_SRC_BIT - charger enable is controlled by software - * CHG_EN_POLARITY_BIT - polarity of charge enable pin when in HW control - * pulled low on OnePlus 6 and SHIFT6mq - * PRETOFAST_TRANSITION_CFG_BIT - - * BAT_OV_ECC_BIT - - * I_TERM_BIT - Current termination ?? 0 = enabled - * AUTO_RECHG_BIT - Enable automatic recharge when battery is full - * 0 = enabled - * EN_ANALOG_DROP_IN_VBATT_BIT - * CHARGER_INHIBIT_BIT - Inhibit charging based on battery voltage - * instead of ?? - */ - { .addr = CHGR_CFG2, - .mask = CHG_EN_SRC_BIT | CHG_EN_POLARITY_BIT | - PRETOFAST_TRANSITION_CFG_BIT | BAT_OV_ECC_BIT | I_TERM_BIT | - AUTO_RECHG_BIT | EN_ANALOG_DROP_IN_VBATT_BIT | - CHARGER_INHIBIT_BIT, - .val = CHARGER_INHIBIT_BIT }, - /* STAT pin software override, match downstream. Parallel charging? */ - { .addr = STAT_CFG, - .mask = STAT_SW_OVERRIDE_CFG_BIT, - .val = STAT_SW_OVERRIDE_CFG_BIT }, - /* Set the default SDP charger type to a 500ma USB 2.0 port */ - { .addr = USBIN_ICL_OPTIONS, - .mask = USB51_MODE_BIT | USBIN_MODE_CHG_BIT, - .val = USB51_MODE_BIT }, - /* Disable watchdog */ - { .addr = SNARL_BARK_BITE_WD_CFG, .mask = 0xff, .val = 0 }, - { .addr = WD_CFG, - .mask = WATCHDOG_TRIGGER_AFP_EN_BIT | WDOG_TIMER_EN_ON_PLUGIN_BIT | - BARK_WDOG_INT_EN_BIT, - .val = 0 }, - /* These bits aren't documented anywhere */ - { .addr = USBIN_5V_AICL_THRESHOLD_CFG, - .mask = USBIN_5V_AICL_THRESHOLD_CFG_MASK, - .val = 0x3 }, - { .addr = USBIN_CONT_AICL_THRESHOLD_CFG, - .mask = USBIN_CONT_AICL_THRESHOLD_CFG_MASK, - .val = 0x3 }, - /* - * Enable Automatic Input Current Limit, this will slowly ramp up the current - * When connected to a wall charger, and automatically stop when it detects - * the charger current limit (voltage drop?) or it reaches the programmed limit. - */ - { .addr = USBIN_AICL_OPTIONS_CFG, - .mask = USBIN_AICL_START_AT_MAX_BIT | USBIN_AICL_ADC_EN_BIT | - USBIN_AICL_EN_BIT | SUSPEND_ON_COLLAPSE_USBIN_BIT | - USBIN_HV_COLLAPSE_RESPONSE_BIT | - USBIN_LV_COLLAPSE_RESPONSE_BIT, - .val = USBIN_HV_COLLAPSE_RESPONSE_BIT | - USBIN_LV_COLLAPSE_RESPONSE_BIT | USBIN_AICL_EN_BIT }, - /* - * Set pre charge current to default, the OnePlus 6 bootloader - * sets this very conservatively. - */ - { .addr = PRE_CHARGE_CURRENT_CFG, - .mask = PRE_CHARGE_CURRENT_SETTING_MASK, - .val = 500000 / CURRENT_SCALE_FACTOR }, - /* - * This overrides all of the current limit options exposed to userspace - * and prevents the device from pulling more than ~1A. This is done - * to minimise potential fire hazard risks. - */ - { .addr = FAST_CHARGE_CURRENT_CFG, - .mask = FAST_CHARGE_CURRENT_SETTING_MASK, - .val = 1000000 / CURRENT_SCALE_FACTOR }, -}; - -static int smb2_init_hw(struct smb2_chip *chip) -{ - int rc, i; - - for (i = 0; i < ARRAY_SIZE(smb2_init_seq); i++) { - dev_dbg(chip->dev, "%d: Writing 0x%02x to 0x%02x\n", i, - smb2_init_seq[i].val, smb2_init_seq[i].addr); - rc = regmap_update_bits(chip->regmap, - chip->base + smb2_init_seq[i].addr, - smb2_init_seq[i].mask, - smb2_init_seq[i].val); - if (rc < 0) - return dev_err_probe(chip->dev, rc, - "%s: init command %d failed\n", - __func__, i); - } - - return 0; -} - -static int smb2_init_irq(struct smb2_chip *chip, int *irq, const char *name, - irqreturn_t (*handler)(int irq, void *data)) -{ - int irqnum; - int rc; - - irqnum = platform_get_irq_byname(to_platform_device(chip->dev), name); - if (irqnum < 0) - return irqnum; - - rc = devm_request_threaded_irq(chip->dev, irqnum, NULL, handler, - IRQF_ONESHOT, name, chip); - if (rc < 0) - return dev_err_probe(chip->dev, rc, "Couldn't request irq %s\n", - name); - - if (irq) - *irq = irqnum; - - return 0; -} - -static int smb2_probe(struct platform_device *pdev) -{ - struct power_supply_config supply_config = {}; - struct power_supply_desc *desc; - struct smb2_chip *chip; - int rc, irq; - - chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); - if (!chip) - return -ENOMEM; - - chip->dev = &pdev->dev; - chip->name = pdev->name; - - chip->regmap = dev_get_regmap(pdev->dev.parent, NULL); - if (!chip->regmap) - return dev_err_probe(chip->dev, -ENODEV, - "failed to locate the regmap\n"); - - rc = device_property_read_u32(chip->dev, "reg", &chip->base); - if (rc < 0) - return dev_err_probe(chip->dev, rc, - "Couldn't read base address\n"); - - chip->usb_in_v_chan = devm_iio_channel_get(chip->dev, "usbin_v"); - if (IS_ERR(chip->usb_in_v_chan)) - return dev_err_probe(chip->dev, PTR_ERR(chip->usb_in_v_chan), - "Couldn't get usbin_v IIO channel\n"); - - chip->usb_in_i_chan = devm_iio_channel_get(chip->dev, "usbin_i"); - if (IS_ERR(chip->usb_in_i_chan)) { - return dev_err_probe(chip->dev, PTR_ERR(chip->usb_in_i_chan), - "Couldn't get usbin_i IIO channel\n"); - } - - rc = smb2_init_hw(chip); - if (rc < 0) - return rc; - - supply_config.drv_data = chip; - supply_config.fwnode = dev_fwnode(&pdev->dev); - - desc = devm_kzalloc(chip->dev, sizeof(smb2_psy_desc), GFP_KERNEL); - if (!desc) - return -ENOMEM; - memcpy(desc, &smb2_psy_desc, sizeof(smb2_psy_desc)); - desc->name = - devm_kasprintf(chip->dev, GFP_KERNEL, "%s-charger", - (const char *)device_get_match_data(chip->dev)); - if (!desc->name) - return -ENOMEM; - - chip->chg_psy = - devm_power_supply_register(chip->dev, desc, &supply_config); - if (IS_ERR(chip->chg_psy)) - return dev_err_probe(chip->dev, PTR_ERR(chip->chg_psy), - "failed to register power supply\n"); - - rc = power_supply_get_battery_info(chip->chg_psy, &chip->batt_info); - if (rc) - return dev_err_probe(chip->dev, rc, - "Failed to get battery info\n"); - - rc = devm_delayed_work_autocancel(chip->dev, &chip->status_change_work, - smb2_status_change_work); - if (rc) - return dev_err_probe(chip->dev, rc, - "Failed to init status change work\n"); - - rc = (chip->batt_info->voltage_max_design_uv - 3487500) / 7500 + 1; - rc = regmap_update_bits(chip->regmap, chip->base + FLOAT_VOLTAGE_CFG, - FLOAT_VOLTAGE_SETTING_MASK, rc); - if (rc < 0) - return dev_err_probe(chip->dev, rc, "Couldn't set vbat max\n"); - - rc = smb2_init_irq(chip, &irq, "bat-ov", smb2_handle_batt_overvoltage); - if (rc < 0) - return rc; - - rc = smb2_init_irq(chip, &chip->cable_irq, "usb-plugin", - smb2_handle_usb_plugin); - if (rc < 0) - return rc; - - rc = smb2_init_irq(chip, &irq, "usbin-icl-change", - smb2_handle_usb_icl_change); - if (rc < 0) - return rc; - rc = smb2_init_irq(chip, &irq, "wdog-bark", smb2_handle_wdog_bark); - if (rc < 0) - return rc; - - rc = dev_pm_set_wake_irq(chip->dev, chip->cable_irq); - if (rc < 0) - return dev_err_probe(chip->dev, rc, "Couldn't set wake irq\n"); - - platform_set_drvdata(pdev, chip); - - /* Initialise charger state */ - schedule_delayed_work(&chip->status_change_work, 0); - - return 0; -} - -static const struct of_device_id smb2_match_id_table[] = { - { .compatible = "qcom,pmi8998-charger", .data = "pmi8998" }, - { .compatible = "qcom,pm660-charger", .data = "pm660" }, - { /* sentinal */ } -}; -MODULE_DEVICE_TABLE(of, smb2_match_id_table); - -static struct platform_driver qcom_spmi_smb2 = { - .probe = smb2_probe, - .driver = { - .name = "qcom-pmi8998/pm660-charger", - .of_match_table = smb2_match_id_table, - }, -}; - -module_platform_driver(qcom_spmi_smb2); - -MODULE_AUTHOR("Caleb Connolly <caleb.connolly@linaro.org>"); -MODULE_DESCRIPTION("Qualcomm SMB2 Charger Driver"); -MODULE_LICENSE("GPL"); |