Hi, On Mon, Jun 30, 2014 at 03:25:55PM +0530, Jenny TC wrote: > This patch introduces BQ24261 charger driver. The driver makes use of power > supply charging driver to setup charging. So the driver does hardware > abstraction and handles h/w specific corner cases. The charging logic resides > with power supply charging driver
I just found one thing. See below: > Signed-off-by: Jenny TC <[email protected]> > --- > drivers/power/Kconfig | 10 + > drivers/power/Makefile | 1 + > drivers/power/bq24261_charger.c | 1351 > +++++++++++++++++++++++++++++++++ > include/linux/power/bq24261-charger.h | 25 + > 4 files changed, 1387 insertions(+) > create mode 100644 drivers/power/bq24261_charger.c > create mode 100644 include/linux/power/bq24261-charger.h > > diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig > index 54a0321..4ff080c 100644 > --- a/drivers/power/Kconfig > +++ b/drivers/power/Kconfig > @@ -411,6 +411,16 @@ config BATTERY_GOLDFISH > Say Y to enable support for the battery and AC power in the > Goldfish emulator. > > +config CHARGER_BQ24261 > + tristate "BQ24261 charger driver" > + select POWER_SUPPLY_CHARGER > + depends on I2C > + help > + Say Y to include support for BQ24261 Charger driver. This driver > + makes use of power supply charging driver. So the driver gives > + the charger hardware abstraction only. Charging logic is abstracted > + in the power supply charging driver. > + > source "drivers/power/reset/Kconfig" > > endif # POWER_SUPPLY > diff --git a/drivers/power/Makefile b/drivers/power/Makefile > index 77535fd..a6e9897 100644 > --- a/drivers/power/Makefile > +++ b/drivers/power/Makefile > @@ -59,4 +59,5 @@ obj-$(CONFIG_CHARGER_BQ24735) += bq24735-charger.o > obj-$(CONFIG_POWER_AVS) += avs/ > obj-$(CONFIG_CHARGER_SMB347) += smb347-charger.o > obj-$(CONFIG_CHARGER_TPS65090) += tps65090-charger.o > +obj-$(CONFIG_CHARGER_BQ24261) += bq24261_charger.o > obj-$(CONFIG_POWER_RESET) += reset/ > diff --git a/drivers/power/bq24261_charger.c b/drivers/power/bq24261_charger.c > new file mode 100644 > index 0000000..c21ea04 > --- /dev/null > +++ b/drivers/power/bq24261_charger.c > @@ -0,0 +1,1351 @@ > +/* > + * bq24261-charger.c - BQ24261 Charger I2C client driver > + * > + * Copyright (C) 2011 Intel Corporation > + * > + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License as published by > + * the Free Software Foundation; version 2 of the License. > + * > + * This program is distributed in the hope that it will be useful, but > + * WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + * General Public License for more details. > + * > + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > + * Author: Jenny TC <[email protected]> > + */ > + > +#include <linux/delay.h> > +#include <linux/device.h> > +#include <linux/err.h> > +#include <linux/i2c.h> > +#include <linux/init.h> > +#include <linux/interrupt.h> > +#include <linux/io.h> > +#include <linux/kernel.h> > +#include <linux/module.h> > +#include <linux/pm_runtime.h> > +#include <linux/power_supply.h> > +#include <linux/power/power_supply_charger.h> > +#include <linux/power/bq24261-charger.h> > +#include <linux/sched.h> > +#include <linux/seq_file.h> > +#include <linux/slab.h> > +#include <linux/usb/otg.h> > +#include <linux/version.h> > + > + > +#define DEV_NAME "bq24261_charger" > +#define MODEL_NAME_SIZE 8 > + > +#define EXCEPTION_MONITOR_DELAY (60 * HZ) > +#define WDT_RESET_DELAY (15 * HZ) > + > +/* BQ24261 registers */ > +#define BQ24261_STAT_CTRL0_ADDR 0x00 > +#define BQ24261_CTRL_ADDR 0x01 > +#define BQ24261_BATT_VOL_CTRL_ADDR 0x02 > +#define BQ24261_VENDOR_REV_ADDR 0x03 > +#define BQ24261_TERM_FCC_ADDR 0x04 > +#define BQ24261_VINDPM_STAT_ADDR 0x05 > +#define BQ24261_ST_NTC_MON_ADDR 0x06 > + > +#define BQ24261_RESET_MASK (0x01 << 7) > +#define BQ24261_RESET_ENABLE (0x01 << 7) > + > +#define BQ24261_FAULT_MASK 0x07 > +#define BQ24261_STAT_MASK (0x03 << 4) > +#define BQ24261_BOOST_MASK (0x01 << 6) > +#define BQ24261_TMR_RST_MASK (0x01 << 7) > +#define BQ24261_TMR_RST (0x01 << 7) > + > +#define BQ24261_ENABLE_BOOST (0x01 << 6) > + > +#define BQ24261_VOVP 0x01 > +#define BQ24261_LOW_SUPPLY 0x02 > +#define BQ24261_THERMAL_SHUTDOWN 0x03 > +#define BQ24261_BATT_TEMP_FAULT 0x04 > +#define BQ24261_TIMER_FAULT 0x05 > +#define BQ24261_BATT_OVP 0x06 > +#define BQ24261_NO_BATTERY 0x07 > +#define BQ24261_STAT_READY 0x00 > + > +#define BQ24261_STAT_CHRG_PRGRSS (0x01 << 4) > +#define BQ24261_STAT_CHRG_DONE (0x02 << 4) > +#define BQ24261_STAT_FAULT (0x03 << 4) > + > +#define BQ24261_CE_MASK (0x01 << 1) > +#define BQ24261_CE_DISABLE (0x01 << 1) > + > +#define BQ24261_HZ_MASK (0x01) > +#define BQ24261_HZ_ENABLE (0x01) > + > +#define BQ24261_ICHRG_MASK (0x1F << 3) > +#define BQ24261_MIN_CC 500 /* 500mA */ > +#define BQ24261_MAX_CC 3000 /* 3A */ > + > +#define BQ24261_ITERM_MASK (0x03) > +#define BQ24261_MIN_ITERM 50 /* 50 mA */ > +#define BQ24261_MAX_ITERM 300 /* 300mA */ > + > +#define BQ24261_VBREG_MASK (0x3F << 2) > + > +#define BQ24261_INLMT_MASK (0x03 << 4) > +#define BQ24261_INLMT_100 0x00 > +#define BQ24261_INLMT_150 (0x01 << 4) > +#define BQ24261_INLMT_500 (0x02 << 4) > +#define BQ24261_INLMT_900 (0x03 << 4) > +#define BQ24261_INLMT_1500 (0x04 << 4) > +#define BQ24261_INLMT_2500 (0x06 << 4) > + > +#define BQ24261_TE_MASK (0x01 << 2) > +#define BQ24261_TE_ENABLE (0x01 << 2) > +#define BQ24261_STAT_ENABLE_MASK (0x01 << 3) > +#define BQ24261_STAT_ENABLE (0x01 << 3) > + > +#define BQ24261_VENDOR_MASK (0x07 << 5) > +#define BQ24261_VENDOR (0x02 << 5) > +#define BQ24261_REV_MASK (0x07) > +#define BQ24261_REV (0x02) > +#define BQ24261_PG2_3_REV (0x06) > +#define BQ24260_REV (0x01) > + > +#define BQ24261_TS_MASK (0x01 << 3) > +#define BQ24261_TS_ENABLED (0x01 << 3) > +#define BQ24261_BOOST_ILIM_MASK (0x01 << 4) > +#define BQ24261_BOOST_ILIM_500ma (0x0) > +#define BQ24261_BOOST_ILIM_1A (0x01 << 4) > + > +#define BQ24261_SAFETY_TIMER_MASK (0x03 << 5) > +#define BQ24261_SAFETY_TIMER_40MIN 0x00 > +#define BQ24261_SAFETY_TIMER_6HR (0x01 << 5) > +#define BQ24261_SAFETY_TIMER_9HR (0x02 << 5) > +#define BQ24261_SAFETY_TIMER_DISABLED (0x03 << 5) > + > +/* 1% above voltage max design to report over voltage */ > +#define BQ24261_OVP_MULTIPLIER 1010 > +#define BQ24261_OVP_RECOVER_MULTIPLIER 990 > +#define BQ24261_DEF_BAT_VOLT_MAX_DESIGN 4200000 > + > +/* Settings for Voltage / DPPM Register (05) */ > +#define BQ24261_VBATT_LEVEL1 3700000 > +#define BQ24261_VBATT_LEVEL2 3960000 > +#define BQ24261_VINDPM_MASK (0x07) > +#define BQ24261_VINDPM_320MV (0x01 << 2) > +#define BQ24261_VINDPM_160MV (0x01 << 1) > +#define BQ24261_VINDPM_80MV (0x01 << 0) > +#define BQ24261_CD_STATUS_MASK (0x01 << 3) > +#define BQ24261_DPM_EN_MASK (0x01 << 4) > +#define BQ24261_DPM_EN_FORCE (0x01 << 4) > +#define BQ24261_LOW_CHG_MASK (0x01 << 5) > +#define BQ24261_LOW_CHG_EN (0x01 << 5) > +#define BQ24261_LOW_CHG_DIS (~BQ24261_LOW_CHG_EN) > +#define BQ24261_DPM_STAT_MASK (0x01 << 6) > +#define BQ24261_MINSYS_STAT_MASK (0x01 << 7) > + > +#define BQ24261_MIN_CC 500 > + > +static u16 bq24261_sfty_tmr[][2] = { > + {0, BQ24261_SAFETY_TIMER_DISABLED} > + , > + {40, BQ24261_SAFETY_TIMER_40MIN} > + , > + {360, BQ24261_SAFETY_TIMER_6HR} > + , > + {540, BQ24261_SAFETY_TIMER_9HR} > + , > +}; > + > + > +static u16 bq24261_inlmt[][2] = { > + {100, BQ24261_INLMT_100} > + , > + {150, BQ24261_INLMT_150} > + , > + {500, BQ24261_INLMT_500} > + , > + {900, BQ24261_INLMT_900} > + , > + {1500, BQ24261_INLMT_1500} > + , > + {2500, BQ24261_INLMT_2500} > + , > +}; > + > +#define BQ24261_MIN_CV_mV 3500 > +#define BQ24261_MAX_CV_mV 4440 > + > +static enum power_supply_property bq24261_usb_props[] = { > + POWER_SUPPLY_PROP_PRESENT, > + POWER_SUPPLY_PROP_ONLINE, > + POWER_SUPPLY_PROP_TYPE, > + POWER_SUPPLY_PROP_HEALTH, > + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, > + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, > + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, > + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, > + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, > + POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, > + POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, > + POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, > + POWER_SUPPLY_PROP_MODEL_NAME, > + POWER_SUPPLY_PROP_MANUFACTURER, > + POWER_SUPPLY_PROP_TEMP_MAX, > + POWER_SUPPLY_PROP_TEMP_MIN, > +}; > + > +enum bq24261_chrgr_stat { > + BQ24261_CHRGR_STAT_UNKNOWN, > + BQ24261_CHRGR_STAT_READY, > + BQ24261_CHRGR_STAT_CHARGING, > + BQ24261_CHRGR_STAT_BAT_FULL, > + BQ24261_CHRGR_STAT_FAULT, > +}; > + > +struct bq24261_charger { > + > + struct mutex lock; > + struct i2c_client *client; > + struct bq24261_plat_data *pdata; > + struct power_supply psy_usb; > + struct power_supply_charger psyc_usb; > + struct delayed_work notify_work; > + struct delayed_work low_supply_fault_work; > + struct delayed_work exception_mon_work; > + struct list_head irq_queue; > + wait_queue_head_t wait_ready; > + > + int chrgr_health; > + int bat_health; > + int cc; > + int cv; > + int inlmt; > + int max_cc; > + int max_cv; > + int iterm; > + int cable_type; > + int cntl_state; > + int max_temp; > + int min_temp; > + enum bq24261_chrgr_stat chrgr_stat; > + bool online; > + bool present; > + bool is_charging_enabled; > + bool is_charger_enabled; > + bool is_vsys_on; > + bool is_hw_chrg_term; > + char model_name[MODEL_NAME_SIZE]; > +}; > + > +enum bq2426x_model_num { > + BQ24260 = 0, > + BQ24261, > +}; > + > +struct bq2426x_model { > + char model_name[MODEL_NAME_SIZE]; > + enum bq2426x_model_num model; > +}; > + > +static struct bq2426x_model bq24261_model_name[] = { > + { "bq24260", BQ24260 }, > + { "bq24261", BQ24261 }, > +}; > + > +struct i2c_client *bq24261_client; > +static inline int get_battery_voltage(int *volt); > +static int bq24261_handle_irq(struct bq24261_charger *chip, u8 stat_reg); > +static inline int bq24261_set_iterm(struct bq24261_charger *chip, int iterm); > +static inline int bq24261_enable_hw_charge_term(struct bq24261_charger *chip, > + bool val); > + > +enum power_supply_type get_power_supply_type( > + unsigned long cable) > +{ > + switch (cable) { > + > + case PSY_CHARGER_CABLE_TYPE_USB_DCP: > + return POWER_SUPPLY_TYPE_USB_DCP; > + case PSY_CHARGER_CABLE_TYPE_USB_CDP: > + return POWER_SUPPLY_TYPE_USB_CDP; > + case PSY_CHARGER_CABLE_TYPE_USB_ACA: > + case PSY_CHARGER_CABLE_TYPE_ACA_DOCK: > + return POWER_SUPPLY_TYPE_USB_ACA; > + case PSY_CHARGER_CABLE_TYPE_AC: > + return POWER_SUPPLY_TYPE_MAINS; > + case PSY_CHARGER_CABLE_TYPE_NONE: > + case PSY_CHARGER_CABLE_TYPE_USB_SDP: > + return POWER_SUPPLY_TYPE_USB; > + default: > + return POWER_SUPPLY_TYPE_UNKNOWN; > + } > + > + return POWER_SUPPLY_TYPE_USB; > +} > + > +static u8 lookup_regval(u16 tbl[][2], size_t size, u16 in_val) > +{ > + int i; > + > + for (i = 1; i < size; ++i) > + if (in_val < tbl[i][0]) > + break; > + > + return tbl[i - 1][1]; > +} > + > +static u8 bq24261_cc_to_reg(int cc) > +{ > + cc = clamp_t(int, cc, BQ24261_MIN_CC, BQ24261_MAX_CC); > + cc = cc - BQ24261_MIN_CC; > + return (cc / 100) << 3; > +} > + > +static u8 bq24261_cv_to_reg(int cv) > +{ > + cv = clamp_t(int, cv, BQ24261_MIN_CV_mV, BQ24261_MAX_CV_mV); > + cv = cv - BQ24261_MIN_CV_mV; > + return (cv / 20) << 2; > +} > + > +static u8 bq24261_inlmt_to_reg(int inlmt) > +{ > + return lookup_regval(bq24261_inlmt, ARRAY_SIZE(bq24261_inlmt), inlmt); > +} > + > +static u8 bq24261_iterm_to_reg(int iterm) > +{ > + iterm = clamp_t(int, iterm, BQ24261_MIN_ITERM, BQ24261_MAX_ITERM); > + iterm = iterm - BQ24261_MIN_ITERM; > + > + return iterm/50; > +} > + > +static u8 bq24261_sfty_tmr_to_reg(int tmr) > +{ > + return lookup_regval(bq24261_sfty_tmr, > + ARRAY_SIZE(bq24261_sfty_tmr), tmr); > +} > + > +static inline int bq24261_read_reg(struct i2c_client *client, u8 reg) > +{ > + int ret; > + > + ret = i2c_smbus_read_byte_data(client, reg); > + if (ret < 0) > + dev_err(&client->dev, "Error(%d) in reading reg %d\n", ret, > + reg); > + > + return ret; > +} > + > +static inline int bq24261_write_reg(struct i2c_client *client, u8 reg, u8 > data) > +{ > + int ret; > + > + ret = i2c_smbus_write_byte_data(client, reg, data); > + if (ret < 0) > + dev_err(&client->dev, "Error(%d) in writing %d to reg %d\n", > + ret, data, reg); > + > + return ret; > +} > + > +static inline int bq24261_read_modify_reg(struct i2c_client *client, u8 reg, > + u8 mask, u8 val) > +{ > + int ret; > + > + ret = bq24261_read_reg(client, reg); > + if (ret < 0) > + return ret; > + ret = (ret & ~mask) | (mask & val); > + return bq24261_write_reg(client, reg, ret); > +} > + > +static inline int bq24261_tmr_ntc_init(struct bq24261_charger *chip) > +{ > + u8 reg_val; > + int ret; > + > + reg_val = bq24261_sfty_tmr_to_reg(chip->pdata->safety_timer); > + > + if (chip->pdata->is_ts_enabled) > + reg_val |= BQ24261_TS_ENABLED; > + > + ret = bq24261_read_modify_reg(chip->client, BQ24261_ST_NTC_MON_ADDR, > + BQ24261_TS_MASK|BQ24261_SAFETY_TIMER_MASK| > + BQ24261_BOOST_ILIM_MASK, reg_val); > + > + return ret; > +} > + > +static inline int bq24261_enable_charging( > + struct bq24261_charger *chip, bool val) > +{ > + int ret; > + u8 reg_val; > + bool is_ready; > + > + ret = bq24261_read_reg(chip->client, > + BQ24261_STAT_CTRL0_ADDR); > + if (ret < 0) { > + dev_err(&chip->client->dev, > + "Error(%d) in reading BQ24261_STAT_CTRL0_ADDR\n", ret); > + } > + > + is_ready = (ret & BQ24261_STAT_MASK) != BQ24261_STAT_FAULT; > + > + /* If status is fault, wait for READY before enabling the charging */ > + > + if (!is_ready && val) { > + ret = wait_event_timeout(chip->wait_ready, > + (chip->chrgr_stat == BQ24261_CHRGR_STAT_READY), > + HZ); > + dev_info(&chip->client->dev, > + "chrgr_stat=%x\n", chip->chrgr_stat); > + if (ret == 0) { > + dev_err(&chip->client->dev, > + "Waiting for Charger Ready Failed. Enabling > charging anyway\n"); > + } > + } > + > + if (val) { > + reg_val = (~BQ24261_CE_DISABLE & BQ24261_CE_MASK); > + if (chip->is_hw_chrg_term) > + reg_val |= BQ24261_TE_ENABLE; > + } else { > + reg_val = BQ24261_CE_DISABLE; > + } > + > + reg_val |= BQ24261_STAT_ENABLE; > + > + ret = bq24261_read_modify_reg(chip->client, BQ24261_CTRL_ADDR, > + BQ24261_STAT_ENABLE_MASK|BQ24261_RESET_MASK| > + BQ24261_CE_MASK|BQ24261_TE_MASK, > + reg_val); > + if (ret || !val) { > + cancel_delayed_work_sync(&chip->notify_work); > + return ret; > + } > + > + bq24261_set_iterm(chip, chip->iterm); > + schedule_delayed_work(&chip->notify_work, 0); > + bq24261_enable_hw_charge_term(chip, true); > + return bq24261_tmr_ntc_init(chip); > +} > + > +static inline int bq24261_reset_timer(struct bq24261_charger *chip) > +{ > + return bq24261_read_modify_reg(chip->client, BQ24261_STAT_CTRL0_ADDR, > + BQ24261_TMR_RST_MASK, BQ24261_TMR_RST); > +} > + > +static inline int bq24261_enable_charger( > + struct bq24261_charger *chip, int val) > +{ > + > + u8 reg_val; > + int ret; > + > + reg_val = val ? (~BQ24261_HZ_ENABLE & BQ24261_HZ_MASK) : > + BQ24261_HZ_ENABLE; > + > + ret = bq24261_read_modify_reg(chip->client, BQ24261_CTRL_ADDR, > + BQ24261_HZ_MASK|BQ24261_RESET_MASK, reg_val); > + if (ret) > + return ret; > + > + return bq24261_reset_timer(chip); > +} > + > +static inline int bq24261_set_cc(struct bq24261_charger *chip, int cc) > +{ > + u8 reg_val; > + int ret; > + > + dev_dbg(&chip->client->dev, "cc=%d\n", cc); > + > + if (cc && (cc < BQ24261_MIN_CC)) { > + dev_dbg(&chip->client->dev, "Set LOW_CHG bit\n"); > + reg_val = BQ24261_LOW_CHG_EN; > + ret = bq24261_read_modify_reg(chip->client, > + BQ24261_VINDPM_STAT_ADDR, > + BQ24261_LOW_CHG_MASK, reg_val); > + } else { > + dev_dbg(&chip->client->dev, "Clear LOW_CHG bit\n"); > + reg_val = BQ24261_LOW_CHG_DIS; > + ret = bq24261_read_modify_reg(chip->client, > + BQ24261_VINDPM_STAT_ADDR, > + BQ24261_LOW_CHG_MASK, reg_val); > + } > + > + reg_val = bq24261_cc_to_reg(cc); > + > + return bq24261_read_modify_reg(chip->client, BQ24261_TERM_FCC_ADDR, > + BQ24261_ICHRG_MASK, reg_val); > +} > + > +static inline int bq24261_set_cv(struct bq24261_charger *chip, int cv) > +{ > + int bat_volt; > + int ret; > + u8 reg_val; > + u8 vindpm_val = 0x0; > + > + /* > + * Setting VINDPM value as per the battery voltage > + * VBatt Vindpm Register Setting > + * < 3.7v 4.2v 0x0 (default) > + * 3.71v - 3.96v 4.36v 0x2 > + * > 3.96v 4.6v 0x5 > + */ > + ret = get_battery_voltage(&bat_volt); > + if (ret) { > + dev_err(&chip->client->dev, > + "Error getting battery voltage!!\n"); > + } else { > + if (bat_volt > BQ24261_VBATT_LEVEL2) > + vindpm_val = > + (BQ24261_VINDPM_320MV | BQ24261_VINDPM_80MV); > + else if (bat_volt > BQ24261_VBATT_LEVEL1) > + vindpm_val = BQ24261_VINDPM_160MV; > + } > + > + ret = bq24261_read_modify_reg(chip->client, > + BQ24261_VINDPM_STAT_ADDR, > + BQ24261_VINDPM_MASK, > + vindpm_val); > + if (ret) { > + dev_err(&chip->client->dev, > + "Error setting VINDPM setting!!\n"); > + return ret; > + } > + > + > + reg_val = bq24261_cv_to_reg(cv); > + > + return bq24261_read_modify_reg(chip->client, BQ24261_BATT_VOL_CTRL_ADDR, > + BQ24261_VBREG_MASK, reg_val); > +} > + > +static inline int bq24261_set_inlmt(struct bq24261_charger *chip, int inlmt) > +{ > + u8 reg_val; > + > + reg_val = bq24261_inlmt_to_reg(inlmt); > + > + return bq24261_read_modify_reg(chip->client, BQ24261_CTRL_ADDR, > + BQ24261_RESET_MASK|BQ24261_INLMT_MASK, reg_val); > + > +} > + > +static inline void resume_charging(struct bq24261_charger *chip) > +{ > + int ret = 0; > + > + if (chip->is_charger_enabled) > + ret = bq24261_enable_charger(chip, true); > + if (!ret && chip->inlmt) > + ret = bq24261_set_inlmt(chip, chip->inlmt); > + if (!ret && chip->cc) > + ret = bq24261_set_cc(chip, chip->cc); > + if (!ret && chip->cv) > + ret = bq24261_set_cv(chip, chip->cv); > + if (!ret && chip->is_charging_enabled) > + ret = bq24261_enable_charging(chip, true); > + > + if (ret) > + dev_err(&bq24261_client->dev, > + "Error(%d) in resume charging\n", ret); > +} > + > +static inline int bq24261_set_iterm(struct bq24261_charger *chip, int iterm) > +{ > + u8 reg_val; > + > + reg_val = bq24261_iterm_to_reg(iterm); > + > + return bq24261_read_modify_reg(chip->client, BQ24261_TERM_FCC_ADDR, > + BQ24261_ITERM_MASK, reg_val); > +} > + > +static inline int bq24261_enable_hw_charge_term( > + struct bq24261_charger *chip, bool val) > +{ > + u8 data; > + int ret; > + > + data = val ? BQ24261_TE_ENABLE : (~BQ24261_TE_ENABLE & BQ24261_TE_MASK); > + > + ret = bq24261_read_modify_reg(chip->client, BQ24261_CTRL_ADDR, > + BQ24261_RESET_MASK|BQ24261_TE_MASK, data); > + > + if (ret) > + return ret; > + > + chip->is_hw_chrg_term = val ? true : false; > + > + return ret; > +} > + > +static inline bool bq24261_is_vsys_on(struct bq24261_charger *chip) > +{ > + int ret; > + struct i2c_client *client = chip->client; > + > + ret = bq24261_read_reg(client, BQ24261_CTRL_ADDR); > + if (ret < 0) { > + dev_err(&client->dev, > + "Error(%d) in reading BQ24261_CTRL_ADDR\n", ret); > + return false; > + } > + > + if (((ret & BQ24261_HZ_MASK) == BQ24261_HZ_ENABLE) && > + chip->is_charger_enabled) { > + dev_err(&client->dev, "Charger in Hi Z Mode\n"); > + return false; > + } > + > + ret = bq24261_read_reg(client, BQ24261_VINDPM_STAT_ADDR); > + if (ret < 0) { > + dev_err(&client->dev, > + "Error(%d) in reading BQ24261_VINDPM_STAT_ADDR\n", ret); > + return false; > + } > + > + if (ret & BQ24261_CD_STATUS_MASK) { > + dev_err(&client->dev, "CD line asserted\n"); > + return false; > + } > + > + return true; > +} > + > +static inline bool is_bq24261_enabled(struct bq24261_charger *chip) > +{ > + if (chip->cable_type == PSY_CHARGER_CABLE_TYPE_NONE) > + return false; > + else if (!chip->is_charger_enabled) > + return false; > + /* > + * BQ24261 gives interrupt only on stop/resume charging. > + * If charging is already stopped, we need to query the hardware > + * to see charger is still active and can supply vsys or not. > + */ > + if ((chip->chrgr_stat == BQ24261_CHRGR_STAT_FAULT) || > + (!chip->is_charging_enabled)) > + return bq24261_is_vsys_on(chip); > + > + return chip->is_vsys_on; > +} > + > +static int bq24261_usb_psyc_set_property(struct power_supply_charger *psyc, > + enum power_supply_charger_property pscp, > + const union power_supply_propval *val) > +{ > + struct bq24261_charger *chip; > + int ret = 0; > + > + chip = container_of(psyc, struct bq24261_charger, psyc_usb); > + > + mutex_lock(&chip->lock); > + dev_dbg(&chip->client->dev, "%s: prop=%d, val=%d\n", > + __func__, pscp, val->intval); > + > + switch (pscp) { > + > + case POWER_SUPPLY_CHARGER_PROP_ENABLE_CHARGING: > + ret = bq24261_enable_charging(chip, val->intval); > + > + if (ret) > + dev_err(&chip->client->dev, > + "Error(%d) in %s charging", ret, > + (val->intval ? "enable" : "disable")); > + else > + chip->is_charging_enabled = val->intval; > + > + break; > + case POWER_SUPPLY_CHARGER_PROP_ENABLE_CHARGER: > + /* Don't enable the charger unless over voltage is recovered */ > + > + if (chip->bat_health != POWER_SUPPLY_HEALTH_OVERVOLTAGE) { > + ret = bq24261_enable_charger(chip, val->intval); > + > + if (ret) > + dev_err(&chip->client->dev, > + "Error(%d) in %s charger", ret, > + (val->intval ? "enable" : "disable")); > + else > + chip->is_charger_enabled = val->intval; > + } else { > + dev_info(&chip->client->dev, "Battery Over Voltage. > Charger will be disabled\n"); > + } > + break; > + case POWER_SUPPLY_CHARGER_PROP_CABLE_TYPE: > + chip->cable_type = val->intval; > + chip->psy_usb.type = get_power_supply_type(chip->cable_type); > + if (chip->cable_type != PSY_CHARGER_CABLE_TYPE_NONE) { > + chip->chrgr_health = POWER_SUPPLY_HEALTH_GOOD; > + chip->chrgr_stat = BQ24261_CHRGR_STAT_UNKNOWN; > + > + /* > + * Adding this processing in order to check > + * for any faults during connect > + */ > + > + ret = bq24261_read_reg(chip->client, > + BQ24261_STAT_CTRL0_ADDR); > + if (ret < 0) > + dev_err(&chip->client->dev, "Error (%d) in > reading status register(0x00)\n", > + ret); > + else > + bq24261_handle_irq(chip, ret); > + } else { > + chip->chrgr_stat = BQ24261_CHRGR_STAT_UNKNOWN; > + chip->chrgr_health = POWER_SUPPLY_HEALTH_UNKNOWN; > + cancel_delayed_work_sync(&chip->low_supply_fault_work); > + } > + break; > + case POWER_SUPPLY_CHARGER_PROP_RESET_WDT: > + bq24261_reset_timer(chip); > + break; > + default: > + ret = -ENODATA; > + } > + > + mutex_unlock(&chip->lock); > + return ret; > +} > + > +static int bq24261_usb_set_property(struct power_supply *psy, > + enum power_supply_property psp, > + const union power_supply_propval *val) > +{ > + struct bq24261_charger *chip; > + int ret = 0; > + > + chip = container_of(psy, struct bq24261_charger, psy_usb); > + > + mutex_lock(&chip->lock); > + > + switch (psp) { > + > + case POWER_SUPPLY_PROP_PRESENT: > + chip->present = val->intval; > + break; > + case POWER_SUPPLY_PROP_ONLINE: > + chip->online = val->intval; > + break; > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: > + ret = bq24261_set_cc(chip, val->intval); > + if (!ret) > + chip->cc = val->intval; > + break; > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: > + ret = bq24261_set_cv(chip, val->intval); > + if (!ret) > + chip->cv = val->intval; > + break; > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: > + chip->max_cc = val->intval; > + break; > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: > + chip->max_cv = val->intval; > + break; > + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: > + ret = bq24261_set_iterm(chip, val->intval); > + if (!ret) > + chip->iterm = val->intval; > + break; > + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: > + ret = bq24261_set_inlmt(chip, val->intval); > + if (!ret) > + chip->inlmt = val->intval; > + break; > + case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: > + chip->cntl_state = val->intval; > + break; > + case POWER_SUPPLY_PROP_TEMP_MAX: > + chip->max_temp = val->intval; > + break; > + case POWER_SUPPLY_PROP_TEMP_MIN: > + chip->min_temp = val->intval; > + break; > + default: > + ret = -ENODATA; > + } > + > + mutex_unlock(&chip->lock); > + return ret; > +} > + > +static int bq24261_usb_psyc_get_property(struct power_supply_charger *psyc, > + enum power_supply_charger_property pscp, > + union power_supply_propval *val) > +{ > + struct bq24261_charger *chip; > + > + chip = container_of(psyc, struct bq24261_charger, psyc_usb); > + > + mutex_lock(&chip->lock); > + > + switch (pscp) { > + case POWER_SUPPLY_CHARGER_PROP_CABLE_TYPE: > + val->intval = chip->cable_type; > + break; > + case POWER_SUPPLY_CHARGER_PROP_ENABLE_CHARGING: > + val->intval = (chip->is_charging_enabled && > + (chip->chrgr_stat == BQ24261_CHRGR_STAT_CHARGING)); > + > + break; > + case POWER_SUPPLY_CHARGER_PROP_ENABLE_CHARGER: > + val->intval = is_bq24261_enabled(chip); > + break; > + default: > + mutex_unlock(&chip->lock); > + return -EINVAL; > + } > + > + mutex_unlock(&chip->lock); > + return 0; > +} > + > +static int bq24261_usb_get_property(struct power_supply *psy, > + enum power_supply_property psp, > + union power_supply_propval *val) > +{ > + struct bq24261_charger *chip; > + > + chip = container_of(psy, struct bq24261_charger, psy_usb); > + > + mutex_lock(&chip->lock); > + > + switch (psp) { > + case POWER_SUPPLY_PROP_PRESENT: > + val->intval = chip->present; > + break; > + case POWER_SUPPLY_PROP_ONLINE: > + val->intval = chip->online; > + break; > + case POWER_SUPPLY_PROP_HEALTH: > + val->intval = chip->chrgr_health; > + break; > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: > + val->intval = chip->max_cc; > + break; > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: > + val->intval = chip->max_cv; > + break; > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: > + val->intval = chip->cc; > + break; > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: > + val->intval = chip->cv; > + break; > + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: > + val->intval = chip->inlmt; > + break; > + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: > + val->intval = chip->iterm; > + break; > + case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: > + val->intval = chip->cntl_state; > + break; > + case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX: > + val->intval = chip->pdata->num_throttle_states; > + break; > + case POWER_SUPPLY_PROP_MODEL_NAME: > + val->strval = chip->model_name; > + break; > + case POWER_SUPPLY_PROP_MANUFACTURER: > + val->strval = "TI"; > + break; > + case POWER_SUPPLY_PROP_TEMP_MAX: > + val->intval = chip->max_temp; > + break; > + case POWER_SUPPLY_PROP_TEMP_MIN: > + val->intval = chip->min_temp; > + break; > + default: > + mutex_unlock(&chip->lock); > + return -EINVAL; > + } > + > + mutex_unlock(&chip->lock); > + return 0; > +} > + > +static inline struct power_supply *get_psy_battery(void) > +{ > + static struct power_supply *psy; > + struct bq24261_charger *chip; > + int i; > + > + if (!bq24261_client) > + return NULL; > + > + chip = i2c_get_clientdata(bq24261_client); > + > + for (i = 0; i < chip->psy_usb.num_supplicants; ++i) { > + psy = power_supply_get_by_name(chip->psy_usb.supplied_to[i]); > + if (psy) > + return psy; > + } > + > + return NULL; > +} > + > +static inline int get_battery_voltage(int *volt) > +{ > + struct power_supply *psy; > + union power_supply_propval val; > + int ret; > + > + psy = get_psy_battery(); > + if (!psy) > + return -EINVAL; > + > + ret = psy->get_property(psy, POWER_SUPPLY_PROP_VOLTAGE_NOW, &val); > + if (!ret) > + *volt = val.intval; > + > + return ret; > +} > + > +static inline int get_battery_property > + (enum power_supply_property prop, int *prop_val) > +{ > + struct power_supply *psy; > + > + psy = get_psy_battery(); > + if (!psy) > + return -EINVAL; > + > + *prop_val = psy_get_ps_int_property(psy, prop); > + > + return 0; > +} > + > +static inline int get_battery_volt_max_design(int *volt) > +{ > + return get_battery_property(POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, volt); > + > +} > + > +static void notify_worker(struct work_struct *work) > +{ > + > + struct bq24261_charger *chip = container_of(work, > + struct bq24261_charger, > + notify_work.work); > + > + atomic_notifier_call_chain(&power_supply_notifier, > + PSY_EVENT_PROP_CHANGED, &chip->psy_usb); > + schedule_delayed_work(&chip->notify_work, WDT_RESET_DELAY); > +} > + > +int bq24261_get_bat_health(void) > +{ > + > + struct bq24261_charger *chip; > + > + if (!bq24261_client) > + return -ENODEV; > + > + chip = i2c_get_clientdata(bq24261_client); > + > + return chip->bat_health; > +} > + > + > +static void bq24261_low_supply_fault_work(struct work_struct *work) > +{ > + struct bq24261_charger *chip = container_of(work, > + struct bq24261_charger, > + low_supply_fault_work.work); > + > + if (chip->chrgr_stat == BQ24261_CHRGR_STAT_FAULT) { > + dev_err(&chip->client->dev, "Low Supply Fault detected!!\n"); > + chip->chrgr_health = POWER_SUPPLY_HEALTH_DEAD; > + power_supply_changed(&chip->psy_usb); > + } > + return; > +} > + > + > +/* is_bat_over_voltage: check battery is over voltage or not > +* @chip: bq24261_charger context > +* > +* This function is used to verify the over voltage condition. > +* In some scenarios, HW generates Over Voltage exceptions when > +* battery voltage is normal. This function uses the over voltage > +* condition (voltage_max_design * 1.01) to verify battery is really > +* over charged or not. > +*/ > + > +static bool is_bat_over_voltage(struct bq24261_charger *chip) > +{ > + int bat_volt, bat_volt_max_des, ret; > + > + ret = get_battery_voltage(&bat_volt); > + if (ret) > + return true; > + > + ret = get_battery_volt_max_design(&bat_volt_max_des); > + > + if (ret) > + bat_volt_max_des = BQ24261_DEF_BAT_VOLT_MAX_DESIGN; > + > + dev_info(&chip->client->dev, "bat_volt=%d Voltage Max Design=%d > OVP_VOLT=%d\n", > + bat_volt, bat_volt_max_des, > + (bat_volt_max_des/1000 * BQ24261_OVP_MULTIPLIER)); > + > + if ((bat_volt) >= (bat_volt_max_des / 1000 * > + BQ24261_OVP_MULTIPLIER)) > + return true; > + > + return false; > +} > + > +#define IS_BATTERY_OVER_VOLTAGE_RECOVERED(chip) \ > + (!is_bat_over_voltage(chip)) > + > +static void handle_battery_over_voltage(struct bq24261_charger *chip) > +{ > + /* > + * Set Health to Over Voltage. Disable charger to discharge > + * battery to reduce the battery voltage. > + */ > + chip->bat_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; > + bq24261_enable_charger(chip, false); > + chip->is_charger_enabled = false; > + cancel_delayed_work_sync(&chip->exception_mon_work); > + schedule_delayed_work(&chip->exception_mon_work, > + EXCEPTION_MONITOR_DELAY); > +} > + > +static void bq24261_exception_mon_work(struct work_struct *work) > +{ > + struct bq24261_charger *chip = container_of(work, > + struct bq24261_charger, > + exception_mon_work.work); > + /* Only over voltage exception need to monitor.*/ > + if (IS_BATTERY_OVER_VOLTAGE_RECOVERED(chip)) { > + dev_info(&chip->client->dev, "Over Voltage Exception > Recovered\n"); > + chip->bat_health = POWER_SUPPLY_HEALTH_GOOD; > + bq24261_enable_charger(chip, true); > + chip->is_charger_enabled = true; > + resume_charging(chip); > + } else { > + schedule_delayed_work(&chip->exception_mon_work, > + EXCEPTION_MONITOR_DELAY); > + } > +} > + > +static int bq24261_handle_irq(struct bq24261_charger *chip, u8 stat_reg) > +{ > + struct i2c_client *client = chip->client; > + bool notify = true; > + > + dev_info(&client->dev, "%s:%d stat=0x%x\n", > + __func__, __LINE__, stat_reg); > + > + switch (stat_reg & BQ24261_STAT_MASK) { > + case BQ24261_STAT_READY: > + chip->chrgr_stat = BQ24261_CHRGR_STAT_READY; > + chip->chrgr_health = POWER_SUPPLY_HEALTH_GOOD; > + chip->bat_health = POWER_SUPPLY_HEALTH_GOOD; > + dev_info(&client->dev, "Charger Status: Ready\n"); > + notify = false; > + break; > + case BQ24261_STAT_CHRG_PRGRSS: > + chip->chrgr_stat = BQ24261_CHRGR_STAT_CHARGING; > + chip->chrgr_health = POWER_SUPPLY_HEALTH_GOOD; > + chip->bat_health = POWER_SUPPLY_HEALTH_GOOD; > + dev_info(&client->dev, "Charger Status: Charge Progress\n"); > + break; > + case BQ24261_STAT_CHRG_DONE: > + chip->chrgr_health = POWER_SUPPLY_HEALTH_GOOD; > + chip->bat_health = POWER_SUPPLY_HEALTH_GOOD; > + dev_info(&client->dev, "Charger Status: Charge Done\n"); > + > + /* > + * HW reports charge termination. Stop h/w charge termination > + * and resume charging. Let power supply charging driver decide > + * on charge termination > + */ > + > + bq24261_enable_hw_charge_term(chip, false); > + resume_charging(chip); > + break; > + > + case BQ24261_STAT_FAULT: > + break; > + } > + > + if (stat_reg & BQ24261_BOOST_MASK) > + dev_info(&client->dev, "Boost Mode\n"); > + > + if ((stat_reg & BQ24261_STAT_MASK) == BQ24261_STAT_FAULT) { > + chip->chrgr_stat = BQ24261_CHRGR_STAT_FAULT; > + > + switch (stat_reg & BQ24261_FAULT_MASK) { > + case BQ24261_VOVP: > + chip->chrgr_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; > + dev_err(&client->dev, "Charger OVP Fault\n"); > + break; > + > + case BQ24261_LOW_SUPPLY: > + notify = false; > + > + if (chip->cable_type != > + PSY_CHARGER_CABLE_TYPE_NONE) { > + schedule_delayed_work > + (&chip->low_supply_fault_work, > + 5*HZ); > + dev_dbg(&client->dev, > + "Schedule Low Supply Fault work!!\n"); > + } > + break; > + > + case BQ24261_THERMAL_SHUTDOWN: > + chip->chrgr_health = POWER_SUPPLY_HEALTH_OVERHEAT; > + dev_err(&client->dev, "Charger Thermal Fault\n"); > + break; > + > + case BQ24261_BATT_TEMP_FAULT: > + chip->bat_health = POWER_SUPPLY_HEALTH_OVERHEAT; > + dev_err(&client->dev, "Battery Temperature Fault\n"); > + break; > + > + case BQ24261_TIMER_FAULT: > + chip->bat_health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; > + chip->chrgr_health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; > + dev_err(&client->dev, "Charger Timer Fault\n"); > + break; > + > + case BQ24261_BATT_OVP: > + notify = false; > + if (chip->bat_health != > + POWER_SUPPLY_HEALTH_OVERVOLTAGE) { > + if (!is_bat_over_voltage(chip)) { > + chip->chrgr_stat = > + BQ24261_CHRGR_STAT_UNKNOWN; > + resume_charging(chip); > + } else { > + dev_err(&client->dev, "Battery Over > Voltage Fault\n"); > + handle_battery_over_voltage(chip); > + notify = true; > + } > + } > + break; > + case BQ24261_NO_BATTERY: > + dev_err(&client->dev, "No Battery Connected\n"); > + break; > + > + } > + > + } > + > + wake_up(&chip->wait_ready); > + > + chip->is_vsys_on = bq24261_is_vsys_on(chip); > + if (notify) > + power_supply_changed(&chip->psy_usb); > + > + return 0; > +} > + > +static irqreturn_t bq24261_thread_handler(int id, void *data) > +{ > + struct bq24261_charger *chip = (struct bq24261_charger *)data; > + int ret; > + > + mutex_lock(&chip->lock); > + > + ret = bq24261_read_reg(chip->client, BQ24261_STAT_CTRL0_ADDR); > + if (ret < 0) > + dev_err(&chip->client->dev, > + "Error (%d) in reading BQ24261_STAT_CTRL0_ADDR\n", ret); > + else > + bq24261_handle_irq(chip, ret); > + > + mutex_unlock(&chip->lock); > + > + return IRQ_HANDLED; > +} > + > +static enum bq2426x_model_num bq24261_get_model(int bq24261_rev_reg) > +{ > + switch (bq24261_rev_reg & BQ24261_REV_MASK) { > + case BQ24260_REV: > + return BQ24260; > + case BQ24261_REV: > + case BQ24261_PG2_3_REV: > + return BQ24261; > + default: > + return -EINVAL; > + } > +} > + > +static int bq24261_probe(struct i2c_client *client, > + const struct i2c_device_id *id) > +{ > + struct i2c_adapter *adapter; > + struct bq24261_charger *chip; > + int ret; > + enum bq2426x_model_num bq24261_rev; > + > + adapter = to_i2c_adapter(client->dev.parent); > + > + if (!client->dev.platform_data) { > + dev_err(&client->dev, "platform data is null"); > + return -EFAULT; > + } > + > + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { > + dev_err(&client->dev, > + "I2C adapter %s doesn't support BYTE DATA transfer\n", > + adapter->name); > + return -EIO; > + } > + > + ret = bq24261_read_reg(client, BQ24261_VENDOR_REV_ADDR); > + if (ret < 0) { > + dev_err(&client->dev, > + "Error (%d) in reading BQ24261_VENDOR_REV_ADDR\n", ret); > + return ret; > + } > + > + bq24261_rev = bq24261_get_model(ret); > + if (((ret & BQ24261_VENDOR_MASK) != BQ24261_VENDOR) || > + (bq24261_rev < 0)) { > + dev_err(&client->dev, > + "Invalid Vendor/Revision number in > BQ24261_VENDOR_REV_ADDR: %d", > + ret); > + return -ENODEV; > + } > + > + chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); > + if (!chip) { > + dev_err(&client->dev, "mem alloc failed\n"); > + return -ENOMEM; > + } > + > + init_waitqueue_head(&chip->wait_ready); > + i2c_set_clientdata(client, chip); > + chip->pdata = client->dev.platform_data; > + > + > + chip->client = client; > + chip->pdata = client->dev.platform_data; why do you set platform_data two times? > + chip->psy_usb.name = DEV_NAME; > + chip->psy_usb.type = POWER_SUPPLY_TYPE_USB; > + chip->psy_usb.properties = bq24261_usb_props; > + chip->psy_usb.num_properties = ARRAY_SIZE(bq24261_usb_props); > + chip->psy_usb.get_property = bq24261_usb_get_property; > + chip->psy_usb.set_property = bq24261_usb_set_property; > + chip->psy_usb.supplied_to = chip->pdata->supplied_to; > + chip->psy_usb.num_supplicants = chip->pdata->num_supplicants; > + /* Limit charge current */ > + chip->max_cc = 1500; > + chip->chrgr_stat = BQ24261_CHRGR_STAT_UNKNOWN; > + chip->chrgr_health = POWER_SUPPLY_HEALTH_UNKNOWN; > + > + chip->psyc_usb.get_property = bq24261_usb_psyc_get_property; > + chip->psyc_usb.set_property = bq24261_usb_psyc_set_property; > + chip->psyc_usb.throttle_states = chip->pdata->throttle_states; > + chip->psyc_usb.num_throttle_states = chip->pdata->num_throttle_states; > + chip->psyc_usb.supported_cables = PSY_CHARGER_CABLE_TYPE_USB; > + > + strncpy(chip->model_name, > + bq24261_model_name[bq24261_rev].model_name, > + MODEL_NAME_SIZE); > + > + mutex_init(&chip->lock); > + ret = power_supply_register(&client->dev, &chip->psy_usb); > + if (ret) { > + dev_err(&client->dev, "Failed: power supply register (%d)\n", > + ret); > + return ret; > + } > + > + ret = power_supply_register_charger(&chip->psy_usb, &chip->psyc_usb); > + if (ret) { > + dev_err(&client->dev, "Failed: power supply register (%d)\n", > + ret); > + power_supply_unregister(&chip->psy_usb); > + return ret; > + } > + > + INIT_DELAYED_WORK(&chip->notify_work, notify_worker); > + INIT_DELAYED_WORK(&chip->low_supply_fault_work, > + bq24261_low_supply_fault_work); > + INIT_DELAYED_WORK(&chip->exception_mon_work, > + bq24261_exception_mon_work); > + bq24261_client = client; > + > + if (chip->client->irq) { > + ret = request_threaded_irq(chip->client->irq, > + NULL, > + bq24261_thread_handler, > + IRQF_SHARED|IRQF_NO_SUSPEND, > + DEV_NAME, chip); > + if (ret) { > + dev_err(&client->dev, "Failed: request_irq (%d)\n", > + ret); > + power_supply_unregister(&chip->psy_usb); > + power_supply_unregister_charger(&chip->psyc_usb); > + bq24261_client = NULL; > + return ret; > + } > + } > + > + if (is_bat_over_voltage(chip)) > + handle_battery_over_voltage(chip); > + else > + chip->bat_health = POWER_SUPPLY_HEALTH_GOOD; > + > + > + return 0; > +} > + > +static int bq24261_remove(struct i2c_client *client) > +{ > + struct bq24261_charger *chip = i2c_get_clientdata(client); > + > + if (client->irq) > + free_irq(client->irq, chip); > + > + flush_scheduled_work(); > + > + power_supply_unregister(&chip->psy_usb); > + return 0; > +} > + > +static const struct i2c_device_id bq24261_id[] = { > + {DEV_NAME, 0}, > + {}, > +}; > + > +MODULE_DEVICE_TABLE(i2c, bq24261_id); > + > +static struct i2c_driver bq24261_driver = { > + .driver = { > + .name = DEV_NAME, > + }, > + .probe = bq24261_probe, > + .remove = bq24261_remove, > + .id_table = bq24261_id, > +}; > + > +module_i2c_driver(bq24261_driver); > + > +MODULE_AUTHOR("Jenny TC <[email protected]>"); > +MODULE_DESCRIPTION("BQ24261 Charger Driver"); > +MODULE_LICENSE("GPL"); > diff --git a/include/linux/power/bq24261-charger.h > b/include/linux/power/bq24261-charger.h > new file mode 100644 > index 0000000..4ff02af > --- /dev/null > +++ b/include/linux/power/bq24261-charger.h > @@ -0,0 +1,25 @@ > +/* > + * bq24261_charger.h: platform data structure for bq24261 driver > + * > + * (C) Copyright 2012 Intel Corporation > + * > + * This program is free software; you can redistribute it and/or > + * modify it under the terms of the GNU General Public License > + * as published by the Free Software Foundation; version 2 > + * of the License. > + */ > + > +#ifndef __BQ24261_CHARGER_H__ > +#define __BQ24261_CHARGER_H__ > + > +struct bq24261_plat_data { > + char **supplied_to; > + size_t num_supplicants; > + struct psy_throttle_state *throttle_states; > + size_t num_throttle_states; > + int safety_timer; > + bool is_ts_enabled; > + > +}; > + > +#endif > -- > 1.7.9.5 >
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