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linux/drivers/power/supply/bq256xx_charger.c
Linus Walleij f444578d72 power: supply: bq256xx: Handle OOM correctly 
Since we now return a pointer to an allocated object we need
to account for memory allocation failure in a separate
error path.

Fixes: 25fd330370 ("power: supply_core: Pass pointer to battery info")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2022-02-11 21:19:51 +01:00

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// SPDX-License-Identifier: GPL-2.0
// BQ256XX Battery Charger Driver
// Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/gpio/consumer.h>
#include <linux/power_supply.h>
#include <linux/regmap.h>
#include <linux/types.h>
#include <linux/usb/phy.h>
#include <linux/device.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <linux/acpi.h>
#define BQ256XX_MANUFACTURER "Texas Instruments"
#define BQ256XX_INPUT_CURRENT_LIMIT 0x00
#define BQ256XX_CHARGER_CONTROL_0 0x01
#define BQ256XX_CHARGE_CURRENT_LIMIT 0x02
#define BQ256XX_PRECHG_AND_TERM_CURR_LIM 0x03
#define BQ256XX_BATTERY_VOLTAGE_LIMIT 0x04
#define BQ256XX_CHARGER_CONTROL_1 0x05
#define BQ256XX_CHARGER_CONTROL_2 0x06
#define BQ256XX_CHARGER_CONTROL_3 0x07
#define BQ256XX_CHARGER_STATUS_0 0x08
#define BQ256XX_CHARGER_STATUS_1 0x09
#define BQ256XX_CHARGER_STATUS_2 0x0a
#define BQ256XX_PART_INFORMATION 0x0b
#define BQ256XX_CHARGER_CONTROL_4 0x0c
#define BQ256XX_IINDPM_MASK GENMASK(4, 0)
#define BQ256XX_IINDPM_STEP_uA 100000
#define BQ256XX_IINDPM_OFFSET_uA 100000
#define BQ256XX_IINDPM_MIN_uA 100000
#define BQ256XX_IINDPM_MAX_uA 3200000
#define BQ256XX_IINDPM_DEF_uA 2400000
#define BQ256XX_VINDPM_MASK GENMASK(3, 0)
#define BQ256XX_VINDPM_STEP_uV 100000
#define BQ256XX_VINDPM_OFFSET_uV 3900000
#define BQ256XX_VINDPM_MIN_uV 3900000
#define BQ256XX_VINDPM_MAX_uV 5400000
#define BQ256XX_VINDPM_DEF_uV 4500000
#define BQ256XX_VBATREG_MASK GENMASK(7, 3)
#define BQ2560X_VBATREG_STEP_uV 32000
#define BQ2560X_VBATREG_OFFSET_uV 3856000
#define BQ2560X_VBATREG_MIN_uV 3856000
#define BQ2560X_VBATREG_MAX_uV 4624000
#define BQ2560X_VBATREG_DEF_uV 4208000
#define BQ25601D_VBATREG_OFFSET_uV 3847000
#define BQ25601D_VBATREG_MIN_uV 3847000
#define BQ25601D_VBATREG_MAX_uV 4615000
#define BQ25601D_VBATREG_DEF_uV 4199000
#define BQ2561X_VBATREG_STEP_uV 10000
#define BQ25611D_VBATREG_MIN_uV 3494000
#define BQ25611D_VBATREG_MAX_uV 4510000
#define BQ25611D_VBATREG_DEF_uV 4190000
#define BQ25618_VBATREG_MIN_uV 3504000
#define BQ25618_VBATREG_MAX_uV 4500000
#define BQ25618_VBATREG_DEF_uV 4200000
#define BQ256XX_VBATREG_BIT_SHIFT 3
#define BQ2561X_VBATREG_THRESH 0x8
#define BQ25611D_VBATREG_THRESH_uV 4290000
#define BQ25618_VBATREG_THRESH_uV 4300000
#define BQ256XX_ITERM_MASK GENMASK(3, 0)
#define BQ256XX_ITERM_STEP_uA 60000
#define BQ256XX_ITERM_OFFSET_uA 60000
#define BQ256XX_ITERM_MIN_uA 60000
#define BQ256XX_ITERM_MAX_uA 780000
#define BQ256XX_ITERM_DEF_uA 180000
#define BQ25618_ITERM_STEP_uA 20000
#define BQ25618_ITERM_OFFSET_uA 20000
#define BQ25618_ITERM_MIN_uA 20000
#define BQ25618_ITERM_MAX_uA 260000
#define BQ25618_ITERM_DEF_uA 60000
#define BQ256XX_IPRECHG_MASK GENMASK(7, 4)
#define BQ256XX_IPRECHG_STEP_uA 60000
#define BQ256XX_IPRECHG_OFFSET_uA 60000
#define BQ256XX_IPRECHG_MIN_uA 60000
#define BQ256XX_IPRECHG_MAX_uA 780000
#define BQ256XX_IPRECHG_DEF_uA 180000
#define BQ25618_IPRECHG_STEP_uA 20000
#define BQ25618_IPRECHG_OFFSET_uA 20000
#define BQ25618_IPRECHG_MIN_uA 20000
#define BQ25618_IPRECHG_MAX_uA 260000
#define BQ25618_IPRECHG_DEF_uA 40000
#define BQ256XX_IPRECHG_BIT_SHIFT 4
#define BQ256XX_ICHG_MASK GENMASK(5, 0)
#define BQ256XX_ICHG_STEP_uA 60000
#define BQ256XX_ICHG_MIN_uA 0
#define BQ256XX_ICHG_MAX_uA 3000000
#define BQ2560X_ICHG_DEF_uA 2040000
#define BQ25611D_ICHG_DEF_uA 1020000
#define BQ25618_ICHG_STEP_uA 20000
#define BQ25618_ICHG_MIN_uA 0
#define BQ25618_ICHG_MAX_uA 1500000
#define BQ25618_ICHG_DEF_uA 340000
#define BQ25618_ICHG_THRESH 0x3c
#define BQ25618_ICHG_THRESH_uA 1180000
#define BQ256XX_VBUS_STAT_MASK GENMASK(7, 5)
#define BQ256XX_VBUS_STAT_NO_INPUT 0
#define BQ256XX_VBUS_STAT_USB_SDP BIT(5)
#define BQ256XX_VBUS_STAT_USB_CDP BIT(6)
#define BQ256XX_VBUS_STAT_USB_DCP (BIT(6) | BIT(5))
#define BQ256XX_VBUS_STAT_USB_OTG (BIT(7) | BIT(6) | BIT(5))
#define BQ256XX_CHRG_STAT_MASK GENMASK(4, 3)
#define BQ256XX_CHRG_STAT_NOT_CHRGING 0
#define BQ256XX_CHRG_STAT_PRECHRGING BIT(3)
#define BQ256XX_CHRG_STAT_FAST_CHRGING BIT(4)
#define BQ256XX_CHRG_STAT_CHRG_TERM (BIT(4) | BIT(3))
#define BQ256XX_PG_STAT_MASK BIT(2)
#define BQ256XX_WDT_FAULT_MASK BIT(7)
#define BQ256XX_CHRG_FAULT_MASK GENMASK(5, 4)
#define BQ256XX_CHRG_FAULT_NORMAL 0
#define BQ256XX_CHRG_FAULT_INPUT BIT(4)
#define BQ256XX_CHRG_FAULT_THERM BIT(5)
#define BQ256XX_CHRG_FAULT_CST_EXPIRE (BIT(5) | BIT(4))
#define BQ256XX_BAT_FAULT_MASK BIT(3)
#define BQ256XX_NTC_FAULT_MASK GENMASK(2, 0)
#define BQ256XX_NTC_FAULT_WARM BIT(1)
#define BQ256XX_NTC_FAULT_COOL (BIT(1) | BIT(0))
#define BQ256XX_NTC_FAULT_COLD (BIT(2) | BIT(0))
#define BQ256XX_NTC_FAULT_HOT (BIT(2) | BIT(1))
#define BQ256XX_NUM_WD_VAL 4
#define BQ256XX_WATCHDOG_MASK GENMASK(5, 4)
#define BQ256XX_WATCHDOG_MAX 1600000
#define BQ256XX_WATCHDOG_DIS 0
#define BQ256XX_WDT_BIT_SHIFT 4
#define BQ256XX_REG_RST BIT(7)
/**
* struct bq256xx_init_data -
* @ichg: fast charge current
* @iindpm: input current limit
* @vbatreg: charge voltage
* @iterm: termination current
* @iprechg: precharge current
* @vindpm: input voltage limit
* @ichg_max: maximum fast charge current
* @vbatreg_max: maximum charge voltage
*/
struct bq256xx_init_data {
u32 ichg;
u32 iindpm;
u32 vbatreg;
u32 iterm;
u32 iprechg;
u32 vindpm;
u32 ichg_max;
u32 vbatreg_max;
};
/**
* struct bq256xx_state -
* @vbus_stat: VBUS status according to BQ256XX_CHARGER_STATUS_0
* @chrg_stat: charging status according to BQ256XX_CHARGER_STATUS_0
* @online: PG status according to BQ256XX_CHARGER_STATUS_0
*
* @wdt_fault: watchdog fault according to BQ256XX_CHARGER_STATUS_1
* @bat_fault: battery fault according to BQ256XX_CHARGER_STATUS_1
* @chrg_fault: charging fault according to BQ256XX_CHARGER_STATUS_1
* @ntc_fault: TS fault according to BQ256XX_CHARGER_STATUS_1
*/
struct bq256xx_state {
u8 vbus_stat;
u8 chrg_stat;
bool online;
u8 wdt_fault;
u8 bat_fault;
u8 chrg_fault;
u8 ntc_fault;
};
enum bq256xx_id {
BQ25600,
BQ25600D,
BQ25601,
BQ25601D,
BQ25618,
BQ25619,
BQ25611D,
};
/**
* struct bq256xx_device -
* @client: i2c client structure
* @regmap: register map structure
* @dev: device structure
* @charger: power supply registered for the charger
* @battery: power supply registered for the battery
* @lock: mutex lock structure
*
* @usb2_phy: usb_phy identifier
* @usb3_phy: usb_phy identifier
* @usb_nb: notifier block
* @usb_work: usb work queue
* @usb_event: usb_event code
*
* @model_name: i2c name string
*
* @init_data: initialization data
* @chip_info: device variant information
* @state: device status and faults
* @watchdog_timer: watchdog timer value in milliseconds
*/
struct bq256xx_device {
struct i2c_client *client;
struct device *dev;
struct power_supply *charger;
struct power_supply *battery;
struct mutex lock;
struct regmap *regmap;
struct usb_phy *usb2_phy;
struct usb_phy *usb3_phy;
struct notifier_block usb_nb;
struct work_struct usb_work;
unsigned long usb_event;
char model_name[I2C_NAME_SIZE];
struct bq256xx_init_data init_data;
const struct bq256xx_chip_info *chip_info;
struct bq256xx_state state;
int watchdog_timer;
};
/**
* struct bq256xx_chip_info -
* @model_id: device instance
*
* @bq256xx_regmap_config: regmap configuration struct
* @bq256xx_get_ichg: pointer to instance specific get_ichg function
* @bq256xx_get_iindpm: pointer to instance specific get_iindpm function
* @bq256xx_get_vbatreg: pointer to instance specific get_vbatreg function
* @bq256xx_get_iterm: pointer to instance specific get_iterm function
* @bq256xx_get_iprechg: pointer to instance specific get_iprechg function
* @bq256xx_get_vindpm: pointer to instance specific get_vindpm function
*
* @bq256xx_set_ichg: pointer to instance specific set_ichg function
* @bq256xx_set_iindpm: pointer to instance specific set_iindpm function
* @bq256xx_set_vbatreg: pointer to instance specific set_vbatreg function
* @bq256xx_set_iterm: pointer to instance specific set_iterm function
* @bq256xx_set_iprechg: pointer to instance specific set_iprechg function
* @bq256xx_set_vindpm: pointer to instance specific set_vindpm function
*
* @bq256xx_def_ichg: default ichg value in microamps
* @bq256xx_def_iindpm: default iindpm value in microamps
* @bq256xx_def_vbatreg: default vbatreg value in microvolts
* @bq256xx_def_iterm: default iterm value in microamps
* @bq256xx_def_iprechg: default iprechg value in microamps
* @bq256xx_def_vindpm: default vindpm value in microvolts
*
* @bq256xx_max_ichg: maximum charge current in microamps
* @bq256xx_max_vbatreg: maximum battery regulation voltage in microvolts
*
* @has_usb_detect: indicates whether device has BC1.2 detection
*/
struct bq256xx_chip_info {
int model_id;
const struct regmap_config *bq256xx_regmap_config;
int (*bq256xx_get_ichg)(struct bq256xx_device *bq);
int (*bq256xx_get_iindpm)(struct bq256xx_device *bq);
int (*bq256xx_get_vbatreg)(struct bq256xx_device *bq);
int (*bq256xx_get_iterm)(struct bq256xx_device *bq);
int (*bq256xx_get_iprechg)(struct bq256xx_device *bq);
int (*bq256xx_get_vindpm)(struct bq256xx_device *bq);
int (*bq256xx_set_ichg)(struct bq256xx_device *bq, int ichg);
int (*bq256xx_set_iindpm)(struct bq256xx_device *bq, int iindpm);
int (*bq256xx_set_vbatreg)(struct bq256xx_device *bq, int vbatreg);
int (*bq256xx_set_iterm)(struct bq256xx_device *bq, int iterm);
int (*bq256xx_set_iprechg)(struct bq256xx_device *bq, int iprechg);
int (*bq256xx_set_vindpm)(struct bq256xx_device *bq, int vindpm);
int bq256xx_def_ichg;
int bq256xx_def_iindpm;
int bq256xx_def_vbatreg;
int bq256xx_def_iterm;
int bq256xx_def_iprechg;
int bq256xx_def_vindpm;
int bq256xx_max_ichg;
int bq256xx_max_vbatreg;
bool has_usb_detect;
};
static int bq256xx_watchdog_time[BQ256XX_NUM_WD_VAL] = {
0, 40000, 80000, 1600000
};
static const int bq25611d_vbatreg_values[] = {
3494000, 3590000, 3686000, 3790000, 3894000, 3990000, 4090000, 4140000,
4190000
};
static const int bq25618_619_vbatreg_values[] = {
3504000, 3600000, 3696000, 3800000, 3904000, 4000000, 4100000, 4150000,
4200000
};
static const int bq25618_619_ichg_values[] = {
1290000, 1360000, 1430000, 1500000
};
static enum power_supply_usb_type bq256xx_usb_type[] = {
POWER_SUPPLY_USB_TYPE_SDP,
POWER_SUPPLY_USB_TYPE_CDP,
POWER_SUPPLY_USB_TYPE_DCP,
POWER_SUPPLY_USB_TYPE_UNKNOWN,
POWER_SUPPLY_USB_TYPE_ACA,
};
static int bq256xx_array_parse(int array_size, int val, const int array[])
{
int i = 0;
if (val < array[i])
return i - 1;
if (val >= array[array_size - 1])
return array_size - 1;
for (i = 1; i < array_size; i++) {
if (val == array[i])
return i;
if (val > array[i - 1] && val < array[i]) {
if (val < array[i])
return i - 1;
else
return i;
}
}
return -EINVAL;
}
static int bq256xx_usb_notifier(struct notifier_block *nb, unsigned long val,
void *priv)
{
struct bq256xx_device *bq =
container_of(nb, struct bq256xx_device, usb_nb);
bq->usb_event = val;
queue_work(system_power_efficient_wq, &bq->usb_work);
return NOTIFY_OK;
}
static void bq256xx_usb_work(struct work_struct *data)
{
struct bq256xx_device *bq =
container_of(data, struct bq256xx_device, usb_work);
switch (bq->usb_event) {
case USB_EVENT_ID:
break;
case USB_EVENT_NONE:
power_supply_changed(bq->charger);
break;
default:
dev_err(bq->dev, "Error switching to charger mode.\n");
break;
}
}
static struct reg_default bq2560x_reg_defs[] = {
{BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
{BQ256XX_CHARGER_CONTROL_0, 0x1a},
{BQ256XX_CHARGE_CURRENT_LIMIT, 0xa2},
{BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x22},
{BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x58},
{BQ256XX_CHARGER_CONTROL_1, 0x9f},
{BQ256XX_CHARGER_CONTROL_2, 0x66},
{BQ256XX_CHARGER_CONTROL_3, 0x4c},
};
static struct reg_default bq25611d_reg_defs[] = {
{BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
{BQ256XX_CHARGER_CONTROL_0, 0x1a},
{BQ256XX_CHARGE_CURRENT_LIMIT, 0x91},
{BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x12},
{BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x40},
{BQ256XX_CHARGER_CONTROL_1, 0x9e},
{BQ256XX_CHARGER_CONTROL_2, 0xe6},
{BQ256XX_CHARGER_CONTROL_3, 0x4c},
{BQ256XX_PART_INFORMATION, 0x54},
{BQ256XX_CHARGER_CONTROL_4, 0x75},
};
static struct reg_default bq25618_619_reg_defs[] = {
{BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
{BQ256XX_CHARGER_CONTROL_0, 0x1a},
{BQ256XX_CHARGE_CURRENT_LIMIT, 0x91},
{BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x12},
{BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x40},
{BQ256XX_CHARGER_CONTROL_1, 0x9e},
{BQ256XX_CHARGER_CONTROL_2, 0xe6},
{BQ256XX_CHARGER_CONTROL_3, 0x4c},
{BQ256XX_PART_INFORMATION, 0x2c},
{BQ256XX_CHARGER_CONTROL_4, 0x75},
};
static int bq256xx_get_state(struct bq256xx_device *bq,
struct bq256xx_state *state)
{
unsigned int charger_status_0;
unsigned int charger_status_1;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_CHARGER_STATUS_0,
&charger_status_0);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ256XX_CHARGER_STATUS_1,
&charger_status_1);
if (ret)
return ret;
state->vbus_stat = charger_status_0 & BQ256XX_VBUS_STAT_MASK;
state->chrg_stat = charger_status_0 & BQ256XX_CHRG_STAT_MASK;
state->online = charger_status_0 & BQ256XX_PG_STAT_MASK;
state->wdt_fault = charger_status_1 & BQ256XX_WDT_FAULT_MASK;
state->bat_fault = charger_status_1 & BQ256XX_BAT_FAULT_MASK;
state->chrg_fault = charger_status_1 & BQ256XX_CHRG_FAULT_MASK;
state->ntc_fault = charger_status_1 & BQ256XX_NTC_FAULT_MASK;
return 0;
}
static int bq256xx_get_ichg_curr(struct bq256xx_device *bq)
{
unsigned int charge_current_limit;
unsigned int ichg_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
&charge_current_limit);
if (ret)
return ret;
ichg_reg_code = charge_current_limit & BQ256XX_ICHG_MASK;
return ichg_reg_code * BQ256XX_ICHG_STEP_uA;
}
static int bq25618_619_get_ichg_curr(struct bq256xx_device *bq)
{
unsigned int charge_current_limit;
unsigned int ichg_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
&charge_current_limit);
if (ret)
return ret;
ichg_reg_code = charge_current_limit & BQ256XX_ICHG_MASK;
if (ichg_reg_code < BQ25618_ICHG_THRESH)
return ichg_reg_code * BQ25618_ICHG_STEP_uA;
return bq25618_619_ichg_values[ichg_reg_code - BQ25618_ICHG_THRESH];
}
static int bq256xx_set_ichg_curr(struct bq256xx_device *bq, int ichg)
{
unsigned int ichg_reg_code;
int ichg_max = bq->init_data.ichg_max;
ichg = clamp(ichg, BQ256XX_ICHG_MIN_uA, ichg_max);
ichg_reg_code = ichg / BQ256XX_ICHG_STEP_uA;
return regmap_update_bits(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
BQ256XX_ICHG_MASK, ichg_reg_code);
}
static int bq25618_619_set_ichg_curr(struct bq256xx_device *bq, int ichg)
{
int array_size = ARRAY_SIZE(bq25618_619_ichg_values);
unsigned int ichg_reg_code;
int ichg_max = bq->init_data.ichg_max;
ichg = clamp(ichg, BQ25618_ICHG_MIN_uA, ichg_max);
if (ichg <= BQ25618_ICHG_THRESH_uA) {
ichg_reg_code = ichg / BQ25618_ICHG_STEP_uA;
} else {
ichg_reg_code = bq256xx_array_parse(array_size, ichg,
bq25618_619_ichg_values) + BQ25618_ICHG_THRESH;
}
return regmap_update_bits(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
BQ256XX_ICHG_MASK, ichg_reg_code);
}
static int bq25618_619_get_chrg_volt(struct bq256xx_device *bq)
{
unsigned int battery_volt_lim;
unsigned int vbatreg_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
&battery_volt_lim);
if (ret)
return ret;
vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
BQ256XX_VBATREG_BIT_SHIFT;
if (vbatreg_reg_code > BQ2561X_VBATREG_THRESH)
return ((vbatreg_reg_code - BQ2561X_VBATREG_THRESH) *
BQ2561X_VBATREG_STEP_uV) +
BQ25618_VBATREG_THRESH_uV;
return bq25618_619_vbatreg_values[vbatreg_reg_code];
}
static int bq25611d_get_chrg_volt(struct bq256xx_device *bq)
{
unsigned int battery_volt_lim;
unsigned int vbatreg_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
&battery_volt_lim);
if (ret)
return ret;
vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
BQ256XX_VBATREG_BIT_SHIFT;
if (vbatreg_reg_code > BQ2561X_VBATREG_THRESH)
return ((vbatreg_reg_code - BQ2561X_VBATREG_THRESH) *
BQ2561X_VBATREG_STEP_uV) +
BQ25611D_VBATREG_THRESH_uV;
return bq25611d_vbatreg_values[vbatreg_reg_code];
}
static int bq2560x_get_chrg_volt(struct bq256xx_device *bq)
{
unsigned int battery_volt_lim;
unsigned int vbatreg_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
&battery_volt_lim);
if (ret)
return ret;
vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
BQ256XX_VBATREG_BIT_SHIFT;
return (vbatreg_reg_code * BQ2560X_VBATREG_STEP_uV)
+ BQ2560X_VBATREG_OFFSET_uV;
}
static int bq25601d_get_chrg_volt(struct bq256xx_device *bq)
{
unsigned int battery_volt_lim;
unsigned int vbatreg_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
&battery_volt_lim);
if (ret)
return ret;
vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
BQ256XX_VBATREG_BIT_SHIFT;
return (vbatreg_reg_code * BQ2560X_VBATREG_STEP_uV)
+ BQ25601D_VBATREG_OFFSET_uV;
}
static int bq25618_619_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
{
int array_size = ARRAY_SIZE(bq25618_619_vbatreg_values);
unsigned int vbatreg_reg_code;
int vbatreg_max = bq->init_data.vbatreg_max;
vbatreg = clamp(vbatreg, BQ25618_VBATREG_MIN_uV, vbatreg_max);
if (vbatreg > BQ25618_VBATREG_THRESH_uV)
vbatreg_reg_code = ((vbatreg -
BQ25618_VBATREG_THRESH_uV) /
(BQ2561X_VBATREG_STEP_uV)) + BQ2561X_VBATREG_THRESH;
else {
vbatreg_reg_code = bq256xx_array_parse(array_size, vbatreg,
bq25618_619_vbatreg_values);
}
return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
BQ256XX_VBATREG_BIT_SHIFT);
}
static int bq25611d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
{
int array_size = ARRAY_SIZE(bq25611d_vbatreg_values);
unsigned int vbatreg_reg_code;
int vbatreg_max = bq->init_data.vbatreg_max;
vbatreg = clamp(vbatreg, BQ25611D_VBATREG_MIN_uV, vbatreg_max);
if (vbatreg > BQ25611D_VBATREG_THRESH_uV)
vbatreg_reg_code = ((vbatreg -
BQ25611D_VBATREG_THRESH_uV) /
(BQ2561X_VBATREG_STEP_uV)) + BQ2561X_VBATREG_THRESH;
else {
vbatreg_reg_code = bq256xx_array_parse(array_size, vbatreg,
bq25611d_vbatreg_values);
}
return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
BQ256XX_VBATREG_BIT_SHIFT);
}
static int bq2560x_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
{
unsigned int vbatreg_reg_code;
int vbatreg_max = bq->init_data.vbatreg_max;
vbatreg = clamp(vbatreg, BQ2560X_VBATREG_MIN_uV, vbatreg_max);
vbatreg_reg_code = (vbatreg - BQ2560X_VBATREG_OFFSET_uV) /
BQ2560X_VBATREG_STEP_uV;
return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
BQ256XX_VBATREG_BIT_SHIFT);
}
static int bq25601d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
{
unsigned int vbatreg_reg_code;
int vbatreg_max = bq->init_data.vbatreg_max;
vbatreg = clamp(vbatreg, BQ25601D_VBATREG_MIN_uV, vbatreg_max);
vbatreg_reg_code = (vbatreg - BQ25601D_VBATREG_OFFSET_uV) /
BQ2560X_VBATREG_STEP_uV;
return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
BQ256XX_VBATREG_BIT_SHIFT);
}
static int bq256xx_get_prechrg_curr(struct bq256xx_device *bq)
{
unsigned int prechg_and_term_curr_lim;
unsigned int iprechg_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
&prechg_and_term_curr_lim);
if (ret)
return ret;
iprechg_reg_code = (prechg_and_term_curr_lim & BQ256XX_IPRECHG_MASK)
>> BQ256XX_IPRECHG_BIT_SHIFT;
return (iprechg_reg_code * BQ256XX_IPRECHG_STEP_uA) +
BQ256XX_IPRECHG_OFFSET_uA;
}
static int bq256xx_set_prechrg_curr(struct bq256xx_device *bq, int iprechg)
{
unsigned int iprechg_reg_code;
iprechg = clamp(iprechg, BQ256XX_IPRECHG_MIN_uA,
BQ256XX_IPRECHG_MAX_uA);
iprechg_reg_code = ((iprechg - BQ256XX_IPRECHG_OFFSET_uA) /
BQ256XX_IPRECHG_STEP_uA) << BQ256XX_IPRECHG_BIT_SHIFT;
return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
BQ256XX_IPRECHG_MASK, iprechg_reg_code);
}
static int bq25618_619_get_prechrg_curr(struct bq256xx_device *bq)
{
unsigned int prechg_and_term_curr_lim;
unsigned int iprechg_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
&prechg_and_term_curr_lim);
if (ret)
return ret;
iprechg_reg_code = (prechg_and_term_curr_lim & BQ256XX_IPRECHG_MASK)
>> BQ256XX_IPRECHG_BIT_SHIFT;
return (iprechg_reg_code * BQ25618_IPRECHG_STEP_uA) +
BQ25618_IPRECHG_OFFSET_uA;
}
static int bq25618_619_set_prechrg_curr(struct bq256xx_device *bq, int iprechg)
{
unsigned int iprechg_reg_code;
iprechg = clamp(iprechg, BQ25618_IPRECHG_MIN_uA,
BQ25618_IPRECHG_MAX_uA);
iprechg_reg_code = ((iprechg - BQ25618_IPRECHG_OFFSET_uA) /
BQ25618_IPRECHG_STEP_uA) << BQ256XX_IPRECHG_BIT_SHIFT;
return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
BQ256XX_IPRECHG_MASK, iprechg_reg_code);
}
static int bq256xx_get_term_curr(struct bq256xx_device *bq)
{
unsigned int prechg_and_term_curr_lim;
unsigned int iterm_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
&prechg_and_term_curr_lim);
if (ret)
return ret;
iterm_reg_code = prechg_and_term_curr_lim & BQ256XX_ITERM_MASK;
return (iterm_reg_code * BQ256XX_ITERM_STEP_uA) +
BQ256XX_ITERM_OFFSET_uA;
}
static int bq256xx_set_term_curr(struct bq256xx_device *bq, int iterm)
{
unsigned int iterm_reg_code;
iterm = clamp(iterm, BQ256XX_ITERM_MIN_uA, BQ256XX_ITERM_MAX_uA);
iterm_reg_code = (iterm - BQ256XX_ITERM_OFFSET_uA) /
BQ256XX_ITERM_STEP_uA;
return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
BQ256XX_ITERM_MASK, iterm_reg_code);
}
static int bq25618_619_get_term_curr(struct bq256xx_device *bq)
{
unsigned int prechg_and_term_curr_lim;
unsigned int iterm_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
&prechg_and_term_curr_lim);
if (ret)
return ret;
iterm_reg_code = prechg_and_term_curr_lim & BQ256XX_ITERM_MASK;
return (iterm_reg_code * BQ25618_ITERM_STEP_uA) +
BQ25618_ITERM_OFFSET_uA;
}
static int bq25618_619_set_term_curr(struct bq256xx_device *bq, int iterm)
{
unsigned int iterm_reg_code;
iterm = clamp(iterm, BQ25618_ITERM_MIN_uA, BQ25618_ITERM_MAX_uA);
iterm_reg_code = (iterm - BQ25618_ITERM_OFFSET_uA) /
BQ25618_ITERM_STEP_uA;
return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
BQ256XX_ITERM_MASK, iterm_reg_code);
}
static int bq256xx_get_input_volt_lim(struct bq256xx_device *bq)
{
unsigned int charger_control_2;
unsigned int vindpm_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_CHARGER_CONTROL_2,
&charger_control_2);
if (ret)
return ret;
vindpm_reg_code = charger_control_2 & BQ256XX_VINDPM_MASK;
return (vindpm_reg_code * BQ256XX_VINDPM_STEP_uV) +
BQ256XX_VINDPM_OFFSET_uV;
}
static int bq256xx_set_input_volt_lim(struct bq256xx_device *bq, int vindpm)
{
unsigned int vindpm_reg_code;
vindpm = clamp(vindpm, BQ256XX_VINDPM_MIN_uV, BQ256XX_VINDPM_MAX_uV);
vindpm_reg_code = (vindpm - BQ256XX_VINDPM_OFFSET_uV) /
BQ256XX_VINDPM_STEP_uV;
return regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_2,
BQ256XX_VINDPM_MASK, vindpm_reg_code);
}
static int bq256xx_get_input_curr_lim(struct bq256xx_device *bq)
{
unsigned int input_current_limit;
unsigned int iindpm_reg_code;
int ret;
ret = regmap_read(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT,
&input_current_limit);
if (ret)
return ret;
iindpm_reg_code = input_current_limit & BQ256XX_IINDPM_MASK;
return (iindpm_reg_code * BQ256XX_IINDPM_STEP_uA) +
BQ256XX_IINDPM_OFFSET_uA;
}
static int bq256xx_set_input_curr_lim(struct bq256xx_device *bq, int iindpm)
{
unsigned int iindpm_reg_code;
iindpm = clamp(iindpm, BQ256XX_IINDPM_MIN_uA, BQ256XX_IINDPM_MAX_uA);
iindpm_reg_code = (iindpm - BQ256XX_IINDPM_OFFSET_uA) /
BQ256XX_IINDPM_STEP_uA;
return regmap_update_bits(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT,
BQ256XX_IINDPM_MASK, iindpm_reg_code);
}
static void bq256xx_charger_reset(void *data)
{
struct bq256xx_device *bq = data;
regmap_update_bits(bq->regmap, BQ256XX_PART_INFORMATION,
BQ256XX_REG_RST, BQ256XX_REG_RST);
if (!IS_ERR_OR_NULL(bq->usb2_phy))
usb_unregister_notifier(bq->usb2_phy, &bq->usb_nb);
if (!IS_ERR_OR_NULL(bq->usb3_phy))
usb_unregister_notifier(bq->usb3_phy, &bq->usb_nb);
}
static int bq256xx_set_charger_property(struct power_supply *psy,
enum power_supply_property prop,
const union power_supply_propval *val)
{
struct bq256xx_device *bq = power_supply_get_drvdata(psy);
int ret = -EINVAL;
switch (prop) {
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
ret = bq->chip_info->bq256xx_set_iindpm(bq, val->intval);
if (ret)
return ret;
break;
case POWER_SUPPLY_PROP_STATUS:
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
ret = bq->chip_info->bq256xx_set_vbatreg(bq, val->intval);
if (ret)
return ret;
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
ret = bq->chip_info->bq256xx_set_ichg(bq, val->intval);
if (ret)
return ret;
break;
case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
ret = bq->chip_info->bq256xx_set_iprechg(bq, val->intval);
if (ret)
return ret;
break;
case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
ret = bq->chip_info->bq256xx_set_iterm(bq, val->intval);
if (ret)
return ret;
break;
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
ret = bq->chip_info->bq256xx_set_vindpm(bq, val->intval);
if (ret)
return ret;
break;
default:
break;
}
return ret;
}
static int bq256xx_get_battery_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct bq256xx_device *bq = power_supply_get_drvdata(psy);
switch (psp) {
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
val->intval = bq->init_data.ichg_max;
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
val->intval = bq->init_data.vbatreg_max;
break;
default:
return -EINVAL;
}
return 0;
}
static int bq256xx_get_charger_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct bq256xx_device *bq = power_supply_get_drvdata(psy);
struct bq256xx_state state;
int ret = 0;
mutex_lock(&bq->lock);
ret = bq256xx_get_state(bq, &state);
mutex_unlock(&bq->lock);
if (ret)
return ret;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
if (state.vbus_stat == BQ256XX_VBUS_STAT_NO_INPUT ||
state.vbus_stat == BQ256XX_VBUS_STAT_USB_OTG)
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
else if (state.chrg_stat == BQ256XX_CHRG_STAT_NOT_CHRGING)
val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
else if (state.chrg_stat == BQ256XX_CHRG_STAT_CHRG_TERM)
val->intval = POWER_SUPPLY_STATUS_FULL;
else
val->intval = POWER_SUPPLY_STATUS_CHARGING;
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
if (state.wdt_fault) {
val->intval =
POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE;
} else if (state.bat_fault) {
val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
} else {
switch (state.chrg_stat) {
case BQ256XX_CHRG_FAULT_INPUT:
val->intval =
POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
break;
case BQ256XX_CHRG_FAULT_THERM:
val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
break;
case BQ256XX_CHRG_FAULT_CST_EXPIRE:
val->intval =
POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
break;
default:
break;
}
switch (state.ntc_fault) {
case BQ256XX_NTC_FAULT_WARM:
val->intval = POWER_SUPPLY_HEALTH_WARM;
break;
case BQ256XX_NTC_FAULT_COOL:
val->intval = POWER_SUPPLY_HEALTH_COOL;
break;
case BQ256XX_NTC_FAULT_COLD:
val->intval = POWER_SUPPLY_HEALTH_COLD;
break;
case BQ256XX_NTC_FAULT_HOT:
val->intval = POWER_SUPPLY_HEALTH_HOT;
break;
default:
val->intval = POWER_SUPPLY_HEALTH_GOOD;
break;
}
}
break;
case POWER_SUPPLY_PROP_USB_TYPE:
if (bq->chip_info->has_usb_detect) {
switch (state.vbus_stat) {
case BQ256XX_VBUS_STAT_USB_SDP:
val->intval = POWER_SUPPLY_USB_TYPE_SDP;
break;
case BQ256XX_VBUS_STAT_USB_CDP:
val->intval = POWER_SUPPLY_USB_TYPE_CDP;
break;
case BQ256XX_VBUS_STAT_USB_DCP:
val->intval = POWER_SUPPLY_USB_TYPE_DCP;
break;
case BQ256XX_VBUS_STAT_USB_OTG:
val->intval = POWER_SUPPLY_USB_TYPE_ACA;
break;
default:
val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
break;
}
} else {
switch (state.vbus_stat) {
case BQ256XX_VBUS_STAT_USB_SDP:
val->intval = POWER_SUPPLY_USB_TYPE_SDP;
break;
case BQ256XX_VBUS_STAT_USB_OTG:
val->intval = POWER_SUPPLY_USB_TYPE_ACA;
break;
default:
val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
break;
}
}
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
switch (state.chrg_stat) {
case BQ256XX_CHRG_STAT_NOT_CHRGING:
val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
break;
case BQ256XX_CHRG_STAT_PRECHRGING:
val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
break;
case BQ256XX_CHRG_STAT_FAST_CHRGING:
val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
break;
case BQ256XX_CHRG_STAT_CHRG_TERM:
val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
break;
default:
val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
}
break;
case POWER_SUPPLY_PROP_MANUFACTURER:
val->strval = BQ256XX_MANUFACTURER;
break;
case POWER_SUPPLY_PROP_MODEL_NAME:
val->strval = bq->model_name;
break;
case POWER_SUPPLY_PROP_ONLINE:
val->intval = state.online;
break;
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
ret = bq->chip_info->bq256xx_get_vindpm(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
ret = bq->chip_info->bq256xx_get_iindpm(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
ret = bq->chip_info->bq256xx_get_vbatreg(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
ret = bq->chip_info->bq256xx_get_ichg(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
ret = bq->chip_info->bq256xx_get_iprechg(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
ret = bq->chip_info->bq256xx_get_iterm(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
default:
return -EINVAL;
}
return ret;
}
static bool bq256xx_state_changed(struct bq256xx_device *bq,
struct bq256xx_state *new_state)
{
struct bq256xx_state old_state;
mutex_lock(&bq->lock);
old_state = bq->state;
mutex_unlock(&bq->lock);
return memcmp(&old_state, new_state, sizeof(struct bq256xx_state)) != 0;
}
static irqreturn_t bq256xx_irq_handler_thread(int irq, void *private)
{
struct bq256xx_device *bq = private;
struct bq256xx_state state;
int ret;
ret = bq256xx_get_state(bq, &state);
if (ret < 0)
goto irq_out;
if (!bq256xx_state_changed(bq, &state))
goto irq_out;
mutex_lock(&bq->lock);
bq->state = state;
mutex_unlock(&bq->lock);
power_supply_changed(bq->charger);
irq_out:
return IRQ_HANDLED;
}
static enum power_supply_property bq256xx_power_supply_props[] = {
POWER_SUPPLY_PROP_MANUFACTURER,
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
POWER_SUPPLY_PROP_CHARGE_TYPE,
POWER_SUPPLY_PROP_USB_TYPE,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
};
static enum power_supply_property bq256xx_battery_props[] = {
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
};
static int bq256xx_property_is_writeable(struct power_supply *psy,
enum power_supply_property prop)
{
switch (prop) {
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
case POWER_SUPPLY_PROP_STATUS:
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
return true;
default:
return false;
}
}
static const struct power_supply_desc bq256xx_power_supply_desc = {
.name = "bq256xx-charger",
.type = POWER_SUPPLY_TYPE_USB,
.usb_types = bq256xx_usb_type,
.num_usb_types = ARRAY_SIZE(bq256xx_usb_type),
.properties = bq256xx_power_supply_props,
.num_properties = ARRAY_SIZE(bq256xx_power_supply_props),
.get_property = bq256xx_get_charger_property,
.set_property = bq256xx_set_charger_property,
.property_is_writeable = bq256xx_property_is_writeable,
};
static struct power_supply_desc bq256xx_battery_desc = {
.name = "bq256xx-battery",
.type = POWER_SUPPLY_TYPE_BATTERY,
.get_property = bq256xx_get_battery_property,
.properties = bq256xx_battery_props,
.num_properties = ARRAY_SIZE(bq256xx_battery_props),
.property_is_writeable = bq256xx_property_is_writeable,
};
static bool bq256xx_is_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case BQ256XX_INPUT_CURRENT_LIMIT:
case BQ256XX_CHARGER_STATUS_0...BQ256XX_CHARGER_STATUS_2:
return true;
default:
return false;
}
}
static const struct regmap_config bq25600_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = BQ256XX_PART_INFORMATION,
.reg_defaults = bq2560x_reg_defs,
.num_reg_defaults = ARRAY_SIZE(bq2560x_reg_defs),
.cache_type = REGCACHE_FLAT,
.volatile_reg = bq256xx_is_volatile_reg,
};
static const struct regmap_config bq25611d_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = BQ256XX_CHARGER_CONTROL_4,
.reg_defaults = bq25611d_reg_defs,
.num_reg_defaults = ARRAY_SIZE(bq25611d_reg_defs),
.cache_type = REGCACHE_FLAT,
.volatile_reg = bq256xx_is_volatile_reg,
};
static const struct regmap_config bq25618_619_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = BQ256XX_CHARGER_CONTROL_4,
.reg_defaults = bq25618_619_reg_defs,
.num_reg_defaults = ARRAY_SIZE(bq25618_619_reg_defs),
.cache_type = REGCACHE_FLAT,
.volatile_reg = bq256xx_is_volatile_reg,
};
static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
[BQ25600] = {
.model_id = BQ25600,
.bq256xx_regmap_config = &bq25600_regmap_config,
.bq256xx_get_ichg = bq256xx_get_ichg_curr,
.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
.bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
.bq256xx_get_iterm = bq256xx_get_term_curr,
.bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
.bq256xx_set_ichg = bq256xx_set_ichg_curr,
.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
.bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
.bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
.bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
.bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
.bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
.bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
.has_usb_detect = false,
},
[BQ25600D] = {
.model_id = BQ25600D,
.bq256xx_regmap_config = &bq25600_regmap_config,
.bq256xx_get_ichg = bq256xx_get_ichg_curr,
.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
.bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
.bq256xx_get_iterm = bq256xx_get_term_curr,
.bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
.bq256xx_set_ichg = bq256xx_set_ichg_curr,
.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
.bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
.bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
.bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
.bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
.bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
.bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
.has_usb_detect = true,
},
[BQ25601] = {
.model_id = BQ25601,
.bq256xx_regmap_config = &bq25600_regmap_config,
.bq256xx_get_ichg = bq256xx_get_ichg_curr,
.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
.bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
.bq256xx_get_iterm = bq256xx_get_term_curr,
.bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
.bq256xx_set_ichg = bq256xx_set_ichg_curr,
.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
.bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
.bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
.bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
.bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
.bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
.bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
.has_usb_detect = false,
},
[BQ25601D] = {
.model_id = BQ25601D,
.bq256xx_regmap_config = &bq25600_regmap_config,
.bq256xx_get_ichg = bq256xx_get_ichg_curr,
.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
.bq256xx_get_vbatreg = bq25601d_get_chrg_volt,
.bq256xx_get_iterm = bq256xx_get_term_curr,
.bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
.bq256xx_set_ichg = bq256xx_set_ichg_curr,
.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
.bq256xx_set_vbatreg = bq25601d_set_chrg_volt,
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
.bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
.bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
.bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
.bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
.bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
.has_usb_detect = true,
},
[BQ25611D] = {
.model_id = BQ25611D,
.bq256xx_regmap_config = &bq25611d_regmap_config,
.bq256xx_get_ichg = bq256xx_get_ichg_curr,
.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
.bq256xx_get_vbatreg = bq25611d_get_chrg_volt,
.bq256xx_get_iterm = bq256xx_get_term_curr,
.bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
.bq256xx_set_ichg = bq256xx_set_ichg_curr,
.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
.bq256xx_set_vbatreg = bq25611d_set_chrg_volt,
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
.bq256xx_def_ichg = BQ25611D_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
.bq256xx_def_vbatreg = BQ25611D_VBATREG_DEF_uV,
.bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
.bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
.bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
.bq256xx_max_vbatreg = BQ25611D_VBATREG_MAX_uV,
.has_usb_detect = true,
},
[BQ25618] = {
.model_id = BQ25618,
.bq256xx_regmap_config = &bq25618_619_regmap_config,
.bq256xx_get_ichg = bq25618_619_get_ichg_curr,
.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
.bq256xx_get_vbatreg = bq25618_619_get_chrg_volt,
.bq256xx_get_iterm = bq25618_619_get_term_curr,
.bq256xx_get_iprechg = bq25618_619_get_prechrg_curr,
.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
.bq256xx_set_ichg = bq25618_619_set_ichg_curr,
.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
.bq256xx_set_vbatreg = bq25618_619_set_chrg_volt,
.bq256xx_set_iterm = bq25618_619_set_term_curr,
.bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
.bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
.bq256xx_def_vbatreg = BQ25618_VBATREG_DEF_uV,
.bq256xx_def_iterm = BQ25618_ITERM_DEF_uA,
.bq256xx_def_iprechg = BQ25618_IPRECHG_DEF_uA,
.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
.bq256xx_max_ichg = BQ25618_ICHG_MAX_uA,
.bq256xx_max_vbatreg = BQ25618_VBATREG_MAX_uV,
.has_usb_detect = false,
},
[BQ25619] = {
.model_id = BQ25619,
.bq256xx_regmap_config = &bq25618_619_regmap_config,
.bq256xx_get_ichg = bq25618_619_get_ichg_curr,
.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
.bq256xx_get_vbatreg = bq25618_619_get_chrg_volt,
.bq256xx_get_iterm = bq25618_619_get_term_curr,
.bq256xx_get_iprechg = bq25618_619_get_prechrg_curr,
.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
.bq256xx_set_ichg = bq25618_619_set_ichg_curr,
.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
.bq256xx_set_vbatreg = bq25618_619_set_chrg_volt,
.bq256xx_set_iterm = bq25618_619_set_term_curr,
.bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
.bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
.bq256xx_def_vbatreg = BQ25618_VBATREG_DEF_uV,
.bq256xx_def_iterm = BQ25618_ITERM_DEF_uA,
.bq256xx_def_iprechg = BQ25618_IPRECHG_DEF_uA,
.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
.bq256xx_max_ichg = BQ25618_ICHG_MAX_uA,
.bq256xx_max_vbatreg = BQ25618_VBATREG_MAX_uV,
.has_usb_detect = false,
},
};
static int bq256xx_power_supply_init(struct bq256xx_device *bq,
struct power_supply_config *psy_cfg, struct device *dev)
{
bq->charger = devm_power_supply_register(bq->dev,
&bq256xx_power_supply_desc,
psy_cfg);
if (IS_ERR(bq->charger)) {
dev_err(dev, "power supply register charger failed\n");
return PTR_ERR(bq->charger);
}
bq->battery = devm_power_supply_register(bq->dev,
&bq256xx_battery_desc,
psy_cfg);
if (IS_ERR(bq->battery)) {
dev_err(dev, "power supply register battery failed\n");
return PTR_ERR(bq->battery);
}
return 0;
}
static int bq256xx_hw_init(struct bq256xx_device *bq)
{
struct power_supply_battery_info *bat_info;
int wd_reg_val = BQ256XX_WATCHDOG_DIS;
int ret = 0;
int i;
for (i = 0; i < BQ256XX_NUM_WD_VAL; i++) {
if (bq->watchdog_timer == bq256xx_watchdog_time[i]) {
wd_reg_val = i;
break;
}
if (bq->watchdog_timer > bq256xx_watchdog_time[i] &&
bq->watchdog_timer < bq256xx_watchdog_time[i + 1])
wd_reg_val = i;
}
ret = regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_1,
BQ256XX_WATCHDOG_MASK, wd_reg_val <<
BQ256XX_WDT_BIT_SHIFT);
ret = power_supply_get_battery_info(bq->charger, &bat_info);
if (ret == -ENOMEM)
return ret;
if (ret) {
dev_warn(bq->dev, "battery info missing, default values will be applied\n");
bat_info->constant_charge_current_max_ua =
bq->chip_info->bq256xx_def_ichg;
bat_info->constant_charge_voltage_max_uv =
bq->chip_info->bq256xx_def_vbatreg;
bat_info->precharge_current_ua =
bq->chip_info->bq256xx_def_iprechg;
bat_info->charge_term_current_ua =
bq->chip_info->bq256xx_def_iterm;
bq->init_data.ichg_max =
bq->chip_info->bq256xx_max_ichg;
bq->init_data.vbatreg_max =
bq->chip_info->bq256xx_max_vbatreg;
} else {
bq->init_data.ichg_max =
bat_info->constant_charge_current_max_ua;
bq->init_data.vbatreg_max =
bat_info->constant_charge_voltage_max_uv;
}
ret = bq->chip_info->bq256xx_set_vindpm(bq, bq->init_data.vindpm);
if (ret)
return ret;
ret = bq->chip_info->bq256xx_set_iindpm(bq, bq->init_data.iindpm);
if (ret)
return ret;
ret = bq->chip_info->bq256xx_set_ichg(bq,
bat_info->constant_charge_current_max_ua);
if (ret)
return ret;
ret = bq->chip_info->bq256xx_set_iprechg(bq,
bat_info->precharge_current_ua);
if (ret)
return ret;
ret = bq->chip_info->bq256xx_set_vbatreg(bq,
bat_info->constant_charge_voltage_max_uv);
if (ret)
return ret;
ret = bq->chip_info->bq256xx_set_iterm(bq,
bat_info->charge_term_current_ua);
if (ret)
return ret;
power_supply_put_battery_info(bq->charger, bat_info);
return 0;
}
static int bq256xx_parse_dt(struct bq256xx_device *bq,
struct power_supply_config *psy_cfg, struct device *dev)
{
int ret = 0;
psy_cfg->drv_data = bq;
psy_cfg->of_node = dev->of_node;
ret = device_property_read_u32(bq->dev, "ti,watchdog-timeout-ms",
&bq->watchdog_timer);
if (ret)
bq->watchdog_timer = BQ256XX_WATCHDOG_DIS;
if (bq->watchdog_timer > BQ256XX_WATCHDOG_MAX ||
bq->watchdog_timer < BQ256XX_WATCHDOG_DIS)
return -EINVAL;
ret = device_property_read_u32(bq->dev,
"input-voltage-limit-microvolt",
&bq->init_data.vindpm);
if (ret)
bq->init_data.vindpm = bq->chip_info->bq256xx_def_vindpm;
ret = device_property_read_u32(bq->dev,
"input-current-limit-microamp",
&bq->init_data.iindpm);
if (ret)
bq->init_data.iindpm = bq->chip_info->bq256xx_def_iindpm;
return 0;
}
static int bq256xx_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct bq256xx_device *bq;
struct power_supply_config psy_cfg = { };
int ret;
bq = devm_kzalloc(dev, sizeof(*bq), GFP_KERNEL);
if (!bq)
return -ENOMEM;
bq->client = client;
bq->dev = dev;
bq->chip_info = &bq256xx_chip_info_tbl[id->driver_data];
mutex_init(&bq->lock);
strncpy(bq->model_name, id->name, I2C_NAME_SIZE);
bq->regmap = devm_regmap_init_i2c(client,
bq->chip_info->bq256xx_regmap_config);
if (IS_ERR(bq->regmap)) {
dev_err(dev, "Failed to allocate register map\n");
return PTR_ERR(bq->regmap);
}
i2c_set_clientdata(client, bq);
ret = bq256xx_parse_dt(bq, &psy_cfg, dev);
if (ret) {
dev_err(dev, "Failed to read device tree properties%d\n", ret);
return ret;
}
ret = devm_add_action_or_reset(dev, bq256xx_charger_reset, bq);
if (ret)
return ret;
/* OTG reporting */
bq->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
if (!IS_ERR_OR_NULL(bq->usb2_phy)) {
INIT_WORK(&bq->usb_work, bq256xx_usb_work);
bq->usb_nb.notifier_call = bq256xx_usb_notifier;
usb_register_notifier(bq->usb2_phy, &bq->usb_nb);
}
bq->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
if (!IS_ERR_OR_NULL(bq->usb3_phy)) {
INIT_WORK(&bq->usb_work, bq256xx_usb_work);
bq->usb_nb.notifier_call = bq256xx_usb_notifier;
usb_register_notifier(bq->usb3_phy, &bq->usb_nb);
}
if (client->irq) {
ret = devm_request_threaded_irq(dev, client->irq, NULL,
bq256xx_irq_handler_thread,
IRQF_TRIGGER_FALLING |
IRQF_ONESHOT,
dev_name(&client->dev), bq);
if (ret < 0) {
dev_err(dev, "get irq fail: %d\n", ret);
return ret;
}
}
ret = bq256xx_power_supply_init(bq, &psy_cfg, dev);
if (ret) {
dev_err(dev, "Failed to register power supply\n");
return ret;
}
ret = bq256xx_hw_init(bq);
if (ret) {
dev_err(dev, "Cannot initialize the chip.\n");
return ret;
}
return ret;
}
static const struct i2c_device_id bq256xx_i2c_ids[] = {
{ "bq25600", BQ25600 },
{ "bq25600d", BQ25600D },
{ "bq25601", BQ25601 },
{ "bq25601d", BQ25601D },
{ "bq25611d", BQ25611D },
{ "bq25618", BQ25618 },
{ "bq25619", BQ25619 },
{},
};
MODULE_DEVICE_TABLE(i2c, bq256xx_i2c_ids);
static const struct of_device_id bq256xx_of_match[] = {
{ .compatible = "ti,bq25600", .data = (void *)BQ25600 },
{ .compatible = "ti,bq25600d", .data = (void *)BQ25600D },
{ .compatible = "ti,bq25601", .data = (void *)BQ25601 },
{ .compatible = "ti,bq25601d", .data = (void *)BQ25601D },
{ .compatible = "ti,bq25611d", .data = (void *)BQ25611D },
{ .compatible = "ti,bq25618", .data = (void *)BQ25618 },
{ .compatible = "ti,bq25619", .data = (void *)BQ25619 },
{ },
};
MODULE_DEVICE_TABLE(of, bq256xx_of_match);
static const struct acpi_device_id bq256xx_acpi_match[] = {
{ "bq25600", BQ25600 },
{ "bq25600d", BQ25600D },
{ "bq25601", BQ25601 },
{ "bq25601d", BQ25601D },
{ "bq25611d", BQ25611D },
{ "bq25618", BQ25618 },
{ "bq25619", BQ25619 },
{},
};
MODULE_DEVICE_TABLE(acpi, bq256xx_acpi_match);
static struct i2c_driver bq256xx_driver = {
.driver = {
.name = "bq256xx-charger",
.of_match_table = bq256xx_of_match,
.acpi_match_table = bq256xx_acpi_match,
},
.probe = bq256xx_probe,
.id_table = bq256xx_i2c_ids,
};
module_i2c_driver(bq256xx_driver);
MODULE_AUTHOR("Ricardo Rivera-Matos <r-rivera-matos@ti.com>");
MODULE_DESCRIPTION("bq256xx charger driver");
MODULE_LICENSE("GPL v2");
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