// SPDX-License-Identifier: GPL-2.0-only /* * axp288_charger.c - X-power AXP288 PMIC Charger driver * * Copyright (C) 2016-2017 Hans de Goede <[email protected]> * Copyright (C) 2014 Intel Corporation * Author: Ramakrishna Pallala <[email protected]> */ #include <linux/acpi.h> #include <linux/bitops.h> #include <linux/module.h> #include <linux/device.h> #include <linux/regmap.h> #include <linux/workqueue.h> #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/usb/otg.h> #include <linux/notifier.h> #include <linux/power_supply.h> #include <linux/property.h> #include <linux/mfd/axp20x.h> #include <linux/extcon.h> #include <linux/dmi.h> #include <asm/iosf_mbi.h> #define PS_STAT_VBUS_TRIGGER … #define PS_STAT_BAT_CHRG_DIR … #define PS_STAT_VBAT_ABOVE_VHOLD … #define PS_STAT_VBUS_VALID … #define PS_STAT_VBUS_PRESENT … #define CHRG_STAT_BAT_SAFE_MODE … #define CHRG_STAT_BAT_VALID … #define CHRG_STAT_BAT_PRESENT … #define CHRG_STAT_CHARGING … #define CHRG_STAT_PMIC_OTP … #define VBUS_ISPOUT_CUR_LIM_MASK … #define VBUS_ISPOUT_CUR_LIM_BIT_POS … #define VBUS_ISPOUT_CUR_LIM_900MA … #define VBUS_ISPOUT_CUR_LIM_1500MA … #define VBUS_ISPOUT_CUR_LIM_2000MA … #define VBUS_ISPOUT_CUR_NO_LIM … #define VBUS_ISPOUT_VHOLD_SET_MASK … #define VBUS_ISPOUT_VHOLD_SET_BIT_POS … #define VBUS_ISPOUT_VHOLD_SET_OFFSET … #define VBUS_ISPOUT_VHOLD_SET_LSB_RES … #define VBUS_ISPOUT_VHOLD_SET_4400MV … #define VBUS_ISPOUT_VBUS_PATH_DIS … #define CHRG_CCCV_CC_MASK … #define CHRG_CCCV_CC_BIT_POS … #define CHRG_CCCV_CC_OFFSET … #define CHRG_CCCV_CC_LSB_RES … #define CHRG_CCCV_ITERM_20P … #define CHRG_CCCV_CV_MASK … #define CHRG_CCCV_CV_BIT_POS … #define CHRG_CCCV_CV_4100MV … #define CHRG_CCCV_CV_4150MV … #define CHRG_CCCV_CV_4200MV … #define CHRG_CCCV_CV_4350MV … #define CHRG_CCCV_CHG_EN … #define CNTL2_CC_TIMEOUT_MASK … #define CNTL2_CC_TIMEOUT_OFFSET … #define CNTL2_CC_TIMEOUT_LSB_RES … #define CNTL2_CC_TIMEOUT_12HRS … #define CNTL2_CHGLED_TYPEB … #define CNTL2_CHG_OUT_TURNON … #define CNTL2_PC_TIMEOUT_MASK … #define CNTL2_PC_TIMEOUT_OFFSET … #define CNTL2_PC_TIMEOUT_LSB_RES … #define CNTL2_PC_TIMEOUT_70MINS … #define CHRG_ILIM_TEMP_LOOP_EN … #define CHRG_VBUS_ILIM_MASK … #define CHRG_VBUS_ILIM_BIT_POS … #define CHRG_VBUS_ILIM_100MA … #define CHRG_VBUS_ILIM_500MA … #define CHRG_VBUS_ILIM_900MA … #define CHRG_VBUS_ILIM_1500MA … #define CHRG_VBUS_ILIM_2000MA … #define CHRG_VBUS_ILIM_2500MA … #define CHRG_VBUS_ILIM_3000MA … #define CHRG_VBUS_ILIM_3500MA … #define CHRG_VBUS_ILIM_4000MA … #define CHRG_VLTFC_0C … #define CHRG_VHTFC_45C … #define FG_CNTL_OCV_ADJ_EN … #define CV_4100MV … #define CV_4150MV … #define CV_4200MV … #define CV_4350MV … #define AXP288_REG_UPDATE_INTERVAL … #define AXP288_EXTCON_DEV_NAME … #define USB_HOST_EXTCON_HID … #define USB_HOST_EXTCON_NAME … enum { … }; struct axp288_chrg_info { … }; static inline int axp288_charger_set_cc(struct axp288_chrg_info *info, int cc) { … } static inline int axp288_charger_set_cv(struct axp288_chrg_info *info, int cv) { … } static int axp288_charger_get_vbus_inlmt(struct axp288_chrg_info *info) { … } static inline int axp288_charger_set_vbus_inlmt(struct axp288_chrg_info *info, int inlmt) { … } static int axp288_charger_vbus_path_select(struct axp288_chrg_info *info, bool enable) { … } static int axp288_charger_enable_charger(struct axp288_chrg_info *info, bool enable) { … } static int axp288_get_charger_health(struct axp288_chrg_info *info) { … } static int axp288_charger_usb_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { … } static int axp288_charger_reg_readb(struct axp288_chrg_info *info, int reg, unsigned int *ret_val) { … } static int axp288_charger_usb_update_property(struct axp288_chrg_info *info) { … } static int axp288_charger_usb_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static int axp288_charger_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { … } static enum power_supply_property axp288_usb_props[] = …; static const struct power_supply_desc axp288_charger_desc = …; static irqreturn_t axp288_charger_irq_thread_handler(int irq, void *dev) { … } /* * The HP Pavilion x2 10 series comes in a number of variants: * Bay Trail SoC + AXP288 PMIC, Micro-USB, DMI_BOARD_NAME: "8021" * Bay Trail SoC + AXP288 PMIC, Type-C, DMI_BOARD_NAME: "815D" * Cherry Trail SoC + AXP288 PMIC, Type-C, DMI_BOARD_NAME: "813E" * Cherry Trail SoC + TI PMIC, Type-C, DMI_BOARD_NAME: "827C" or "82F4" * * The variants with the AXP288 + Type-C connector are all kinds of special: * * 1. They use a Type-C connector which the AXP288 does not support, so when * using a Type-C charger it is not recognized. Unlike most AXP288 devices, * this model actually has mostly working ACPI AC / Battery code, the ACPI code * "solves" this by simply setting the input_current_limit to 3A. * There are still some issues with the ACPI code, so we use this native driver, * and to solve the charging not working (500mA is not enough) issue we hardcode * the 3A input_current_limit like the ACPI code does. * * 2. If no charger is connected the machine boots with the vbus-path disabled. * Normally this is done when a 5V boost converter is active to avoid the PMIC * trying to charge from the 5V boost converter's output. This is done when * an OTG host cable is inserted and the ID pin on the micro-B receptacle is * pulled low and the ID pin has an ACPI event handler associated with it * which re-enables the vbus-path when the ID pin is pulled high when the * OTG host cable is removed. The Type-C connector has no ID pin, there is * no ID pin handler and there appears to be no 5V boost converter, so we * end up not charging because the vbus-path is disabled, until we unplug * the charger which automatically clears the vbus-path disable bit and then * on the second plug-in of the adapter we start charging. To solve the not * charging on first charger plugin we unconditionally enable the vbus-path at * probe on this model, which is safe since there is no 5V boost converter. */ static const struct dmi_system_id axp288_hp_x2_dmi_ids[] = …; static void axp288_charger_extcon_evt_worker(struct work_struct *work) { … } static int axp288_charger_handle_cable_evt(struct notifier_block *nb, unsigned long event, void *param) { … } static void axp288_charger_otg_evt_worker(struct work_struct *work) { … } static int axp288_charger_handle_otg_evt(struct notifier_block *nb, unsigned long event, void *param) { … } static int charger_init_hw_regs(struct axp288_chrg_info *info) { … } static void axp288_charger_cancel_work(void *data) { … } static int axp288_charger_probe(struct platform_device *pdev) { … } static const struct platform_device_id axp288_charger_id_table[] = …; MODULE_DEVICE_TABLE(platform, axp288_charger_id_table); static struct platform_driver axp288_charger_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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