TI中文支持网Part Number:BQ24179Other Parts Discussed in Thread:BQ25790,
我们在展锐平台上uis8581上使用贵司BQ24179作为外部充电IC，软件驱动用的是BQ25790的驱动，目前测试设备电池电压3.7V，实际充电电流只有200MA，驱动设置的充电电流为1A。请问我们该如何解决这个问题。下面为硬件设计原理图。
Cherry Zhou：
您好，我们已收到您的问题并升级到英文论坛，如有答复将尽快回复您。谢谢！
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liao jason：
您好，我们软件抓取log，看看了，软件获取充电状态一直在BQ25790_PRECHRG这个模式，无论是插入电脑USB，还是12V的PD协议充电头都一直工作在BQ25790_PRECHRG这个模式
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Cherry Zhou：
您好，PROG 引脚电阻器是为 2S 电池设置的。 3.7V 电池对于2S 设置来说，会导致进行预充电。
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liao jason：
您好，我们把引脚电阻改成4.7K,充电电流一直是1.4A。我们电池是4.2V,5000MA 锂电池，目前发现有两个问题：
1.充电过程中一直是5V，我们使用的是PD充电头，支持5V,9V,12V，芯片没有升压动作
2.充电一直是恒流充电，整个过程都是1.4A左右，电池充到4.2V，充电电流没有下降。
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Cherry Zhou：
您好，您方便提供下 I2C寄存器的设置吗？ 包括status和 fault 寄存器。
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liao jason：
static struct reg_default bq25790_reg_defs[] = { {BQ25790_INPUT_V_LIM, 0x24}, {BQ25790_INPUT_I_LIM_MSB, 0x01}, {BQ25790_INPUT_I_LIM_LSB, 0x2c}, {BQ25790_PRECHRG_CTRL, 0xc3}, {BQ25790_TERM_CTRL, 0x5}, {BQ25790_VOTG_REG, 0xdc}, {BQ25790_IOTG_REG, 0x4b}, {BQ25790_TIMER_CTRL, 0x3d}, {BQ25790_CHRG_CTRL_0, 0xa2}, {BQ25790_CHRG_CTRL_1, 0x85}, {BQ25790_CHRG_CTRL_2, 0x40}, {BQ25790_CHRG_CTRL_3, 0x12}, {BQ25790_CHRG_CTRL_5, 0x16}, {BQ25790_MPPT_CTRL, 0xaa}, {BQ25790_TEMP_CTRL, 0xc0}, {BQ25790_NTC_CTRL_0, 0x7a}, {BQ25790_NTC_CTRL_1, 0x54}, {BQ25790_ICO_I_LIM, 0x0}, {BQ25790_CHRG_STAT_0, 0x0}, {BQ25790_CHRG_STAT_1, 0x0}, {BQ25790_CHRG_STAT_2, 0x0}, {BQ25790_CHRG_STAT_3, 0x0}, {BQ25790_CHRG_STAT_4, 0x0}, {BQ25790_FAULT_STAT_0, 0x0}, {BQ25790_FAULT_STAT_1, 0x0}, {BQ25790_CHRG_FLAG_0, 0x0}, {BQ25790_CHRG_FLAG_1, 0x0}, {BQ25790_CHRG_FLAG_2, 0x0}, {BQ25790_CHRG_FLAG_3, 0x0}, {BQ25790_FAULT_FLAG_0, 0x0}, {BQ25790_FAULT_FLAG_1, 0x0}, {BQ25790_CHRG_MSK_0, 0x0}, {BQ25790_CHRG_MSK_1, 0x0}, {BQ25790_CHRG_MSK_2, 0x0}, {BQ25790_CHRG_MSK_3, 0x0}, {BQ25790_FAULT_MSK_0, 0x0}, {BQ25790_FAULT_MSK_1, 0x0}, {BQ25790_ADC_CTRL, 0x30}, {BQ25790_FN_DISABE_0, 0x0}, {BQ25790_FN_DISABE_1, 0x0}, {BQ25790_ADC_IBUS_MSB, 0x0}, {BQ25790_ADC_IBUS_LSB, 0x0}, {BQ25790_ADC_IBAT_MSB, 0x0}, {BQ25790_ADC_IBAT_LSB, 0x0}, {BQ25790_ADC_VAC1, 0x0}, {BQ25790_ADC_VAC2, 0x0}, {BQ25790_ADC_VBAT_MSB, 0x0}, {BQ25790_ADC_VBAT_LSB, 0x0}, {BQ25790_ADC_VBUS_MSB, 0x0}, {BQ25790_ADC_VBUS_LSB, 0x0}, {BQ25790_ADC_TS, 0x0}, {BQ25790_ADC_TDIE, 0x0}, {BQ25790_ADC_DP, 0x0}, {BQ25790_ADC_DM, 0x0}, {BQ25790_DPDM_DRV, 0x0}, {BQ25790_PART_INFO, 0x0}, };
我使用的是默认配置
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Cherry Zhou：
您好，I2C寄存器的少了一些key registers，例如SYSMIN, BATREG和CELLS。FLAG 寄存器最好不要都是0，除非您读了两次以及读的第二次清除了寄存器。
方便的话您能否提供下REG0x01 0xAA 的数据？
liao jason 说：1.充电过程中一直是5V，我们使用的是PD充电头，支持5V,9V,12V，芯片没有升压动作
升压动作，请问您指的是没有在SW1/2的开关上进行操作吗？充电器无法直接与 USB typeC 型 PD 通信，因为它没有 CCX 引脚。
liao jason 说：2.充电一直是恒流充电，整个过程都是1.4A左右，电池充到4.2V，充电电流没有下降。
如果充电器正在切换，而且充电电流没有降低，但是 BATP 感应到4.2V，那么BATREG 电压高于 4.2V 或者是 IC 损坏了。
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liao jason：
REG0x01 写的值是3600000
下面是我们使用的驱动代码
/* SPDX-License-Identifier: GPL-2.0-only */
// BQ25790 Charger Driver
// Copyright (C) 2020 Texas Instruments Incorporated – http://www.ti.com/
#ifndef _BQ25790_CHARGER_H
#define _BQ25790_CHARGER_H
#define BQ25790_MANUFACTURER "Texas Instruments"
#define BQ25790_NAME "bq25790"
#define BQ25790_MIN_SYS_V 0x00
#define BQ25790_CHRG_V_LIM_MSB 0x01
#define BQ25790_CHRG_V_LIM_LSB 0x02
#define BQ25790_CHRG_I_LIM_MSB 0x03
#define BQ25790_CHRG_I_LIM_LSB 0x04
#define BQ25790_INPUT_V_LIM 0x05
#define BQ25790_INPUT_I_LIM_MSB 0x06
#define BQ25790_INPUT_I_LIM_LSB 0x07
#define BQ25790_PRECHRG_CTRL 0x08
#define BQ25790_TERM_CTRL 0x09
#define BQ25790_RECHRG_CTRL 0x0a
#define BQ25790_VOTG_REG 0x0b
#define BQ25790_IOTG_REG 0x0d
#define BQ25790_TIMER_CTRL 0x0e
#define BQ25790_CHRG_CTRL_0 0x0f
#define BQ25790_CHRG_CTRL_1 0x10
#define BQ25790_CHRG_CTRL_2 0x11
#define BQ25790_CHRG_CTRL_3 0x12
#define BQ25790_CHRG_CTRL_4 0x13
#define BQ25790_CHRG_CTRL_5 0x14
#define BQ25790_MPPT_CTRL 0x15
#define BQ25790_TEMP_CTRL 0x16
#define BQ25790_NTC_CTRL_0 0x17
#define BQ25790_NTC_CTRL_1 0x18
#define BQ25790_ICO_I_LIM 0x19
#define BQ25790_CHRG_STAT_0 0x1b
#define BQ25790_CHRG_STAT_1 0x1c
#define BQ25790_CHRG_STAT_2 0x1d
#define BQ25790_CHRG_STAT_3 0x1e
#define BQ25790_CHRG_STAT_4 0x1f
#define BQ25790_FAULT_STAT_0 0x20
#define BQ25790_FAULT_STAT_1 0x21
#define BQ25790_CHRG_FLAG_0 0x22
#define BQ25790_CHRG_FLAG_1 0x23
#define BQ25790_CHRG_FLAG_2 0x24
#define BQ25790_CHRG_FLAG_3 0x25
#define BQ25790_FAULT_FLAG_0 0x26
#define BQ25790_FAULT_FLAG_1 0x27
#define BQ25790_CHRG_MSK_0 0x28
#define BQ25790_CHRG_MSK_1 0x29
#define BQ25790_CHRG_MSK_2 0x2a
#define BQ25790_CHRG_MSK_3 0x2b
#define BQ25790_FAULT_MSK_0 0x2c
#define BQ25790_FAULT_MSK_1 0x2d
#define BQ25790_ADC_CTRL 0x2e
#define BQ25790_FN_DISABE_0 0x2f
#define BQ25790_FN_DISABE_1 0x30
#define BQ25790_ADC_IBUS_MSB 0x31
#define BQ25790_ADC_IBUS_LSB 0x32
#define BQ25790_ADC_IBAT_MSB 0x33
#define BQ25790_ADC_IBAT_LSB 0x34
#define BQ25790_ADC_VBUS_MSB 0x35
#define BQ25790_ADC_VBUS_LSB 0x36
#define BQ25790_ADC_VAC1 0x37
#define BQ25790_ADC_VAC2 0x39
#define BQ25790_ADC_VBAT_MSB 0x3b
#define BQ25790_ADC_VBAT_LSB 0x3c
#define BQ25790_ADC_VSYS_MSB 0x3d
#define BQ25790_ADC_VSYS_LSB 0x3e
#define BQ25790_ADC_TS 0x3f
#define BQ25790_ADC_TDIE 0x41
#define BQ25790_ADC_DP 0x43
#define BQ25790_ADC_DM 0x45
#define BQ25790_DPDM_DRV 0x47
#define BQ25790_PART_INFO 0x48
#define BQ25790_CHRG_EN BIT(5)
#define BQ25790_ADC_EN BIT(7)
/* Charger Status 1 */
#define BQ25790_CHG_STAT_MSK GENMASK(7, 5)
#define BQ25790_NOT_CHRGING 0
#define BQ25790_TRICKLE_CHRG BIT(5)
#define BQ25790_PRECHRG BIT(6)
#define BQ25790_FAST_CHRG (BIT(5) | BIT(6))
#define BQ25790_TAPER_CHRG BIT(7)
#define BQ25790_TOP_OFF_CHRG (BIT(6) | BIT(7))
#define BQ25790_TERM_CHRG (BIT(5) | BIT(6) | BIT(7))
#define BQ25790_VBUS_PRESENT BIT(0)
#define BQ25790_VBUS_STAT_MSK GENMASK(4, 1)
#define BQ25790_USB_SDP BIT(1)
#define BQ25790_USB_CDP BIT(2)
#define BQ25790_USB_DCP (BIT(1) | BIT(2))
#define BQ25790_HVDCP BIT(3)
#define BQ25790_UNKNOWN_3A (BIT(3) | BIT(1))
#define BQ25790_NON_STANDARD (BIT(3) | BIT(2))
#define BQ25790_OTG_MODE (BIT(3) | BIT(2) | BIT(1))
#define BQ25790_UNQUAL_ADAPT BIT(4)
#define BQ25790_DIRECT_PWR (BIT(4) | BIT(2) | BIT(1))
/* Charger Status 4 */
#define BQ25790_TEMP_HOT BIT(0)
#define BQ25790_TEMP_WARM BIT(1)
#define BQ25790_TEMP_COOL BIT(2)
#define BQ25790_TEMP_COLD BIT(3)
#define BQ25790_TEMP_MASK GENMASK(3, 0)
#define BQ25790_OTG_OVP BIT(5)
#define BQ25790_VSYS_OVP BIT(6)
#define BQ25790_PG_STAT BIT(3)
#define BQ25790_PRECHRG_CUR_MASK GENMASK(5, 0)
#define BQ25790_PRECHRG_CURRENT_STEP_uA 40000
#define BQ25790_PRECHRG_I_MIN_uA 40000
#define BQ25790_PRECHRG_I_MAX_uA 2000000
#define BQ25790_PRECHRG_I_DEF_uA 120000
#define BQ25790_TERMCHRG_CUR_MASK GENMASK(4, 0)
#define BQ25790_TERMCHRG_CURRENT_STEP_uA 40000
#define BQ25790_TERMCHRG_I_MIN_uA 40000
#define BQ25790_TERMCHRG_I_MAX_uA 1000000
#define BQ25790_TERMCHRG_I_DEF_uA 200000
#define BQ25790_ICHRG_CURRENT_STEP_uA 10000
#define BQ25790_ICHRG_I_MIN_uA 50000
#define BQ25790_ICHRG_I_MAX_uA 5000000
#define BQ25790_ICHRG_I_DEF_uA 1000000
#define BQ25790_VREG_V_MAX_uV 18800000
#define BQ25790_VREG_V_MIN_uV 3000000
#define BQ25790_VREG_V_DEF_uV 3600000
#define BQ25790_VREG_V_STEP_uV 10000
#define BQ25790_IINDPM_I_MIN_uA 100000
#define BQ25790_IINDPM_I_MAX_uA 3300000
#define BQ25790_IINDPM_STEP_uA 10000
#define BQ25790_IINDPM_DEF_uA 1000000
#define BQ25790_VINDPM_V_MIN_uV 3600000
#define BQ25790_VINDPM_V_MAX_uV 22000000
#define BQ25790_VINDPM_STEP_uV 100000
#define BQ25790_VINDPM_DEF_uV 3600000
#define BQ25790_ADC_VOLT_STEP_uV 1000
#define BQ25790_ADC_CURR_STEP_uA 1000
#define BQ25790_WATCHDOG_MASK GENMASK(2, 0)
#define BQ25790_WATCHDOG_DIS 0
#define BQ25790_WATCHDOG_MAX 160000
#endif /* _BQ25790_CHARGER_H */// SPDX-License-Identifier: GPL-2.0
// BQ25790 driver
// Copyright (C) 2020 Texas Instruments Incorporated – http://www.ti.com/
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/power_supply.h>
#include <linux/regmap.h>
#include <linux/types.h>
#include <linux/gpio/consumer.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/usb/phy.h>
#include <linux/acpi.h>
#include "bq25790_charger.h"
#define BQ25790_NUM_WD_VAL 8
struct bq25790_init_data {
u32 ichg; /* charge current */
u32 ilim; /* input current */
u32 vreg; /* regulation voltage */
u32 iterm; /* termination current */
u32 iprechg; /* precharge current */
u32 vlim; /* minimum system voltage limit */
u32 max_ichg;
u32 max_vreg;
};
struct bq25790_state {
bool online;
u8 chrg_status;
u8 chrg_type;
u8 health;
u8 chrg_fault;
u8 vbus_status;
u8 fault_0;
u8 fault_1;
u32 vbat_adc;
u32 vbus_adc;
u32 ibus_adc;
u32 ibat_adc;
};
struct bq25790_device {
struct i2c_client *client;
struct device *dev;
struct power_supply *charger;
struct power_supply *battery;
struct mutex lock;
struct usb_phy *usb2_phy;
struct usb_phy *usb3_phy;
struct notifier_block usb_nb;
struct work_struct usb_work;
unsigned long usb_event;
struct regmap *regmap;
char model_name[I2C_NAME_SIZE];
int device_id;
struct bq25790_init_data init_data;
struct bq25790_state state;
u32 watchdog_timer;
};
static struct reg_default bq25790_reg_defs[] = {
{BQ25790_INPUT_V_LIM, 0x24},
{BQ25790_INPUT_I_LIM_MSB, 0x01},
{BQ25790_INPUT_I_LIM_LSB, 0x2c},
{BQ25790_PRECHRG_CTRL, 0xc3},
{BQ25790_TERM_CTRL, 0x5},
{BQ25790_VOTG_REG, 0xdc},
{BQ25790_IOTG_REG, 0x4b},
{BQ25790_TIMER_CTRL, 0x3d},
{BQ25790_CHRG_CTRL_0, 0xa2},
{BQ25790_CHRG_CTRL_1, 0x85},
{BQ25790_CHRG_CTRL_2, 0x40},
{BQ25790_CHRG_CTRL_3, 0x12},
{BQ25790_CHRG_CTRL_5, 0x16},
{BQ25790_MPPT_CTRL, 0xaa},
{BQ25790_TEMP_CTRL, 0xc0},
{BQ25790_NTC_CTRL_0, 0x7a},
{BQ25790_NTC_CTRL_1, 0x54},
{BQ25790_ICO_I_LIM, 0x0},
{BQ25790_CHRG_STAT_0, 0x0},
{BQ25790_CHRG_STAT_1, 0x0},
{BQ25790_CHRG_STAT_2, 0x0},
{BQ25790_CHRG_STAT_3, 0x0},
{BQ25790_CHRG_STAT_4, 0x0},
{BQ25790_FAULT_STAT_0, 0x0},
{BQ25790_FAULT_STAT_1, 0x0},
{BQ25790_CHRG_FLAG_0, 0x0},
{BQ25790_CHRG_FLAG_1, 0x0},
{BQ25790_CHRG_FLAG_2, 0x0},
{BQ25790_CHRG_FLAG_3, 0x0},
{BQ25790_FAULT_FLAG_0, 0x0},
{BQ25790_FAULT_FLAG_1, 0x0},
{BQ25790_CHRG_MSK_0, 0x0},
{BQ25790_CHRG_MSK_1, 0x0},
{BQ25790_CHRG_MSK_2, 0x0},
{BQ25790_CHRG_MSK_3, 0x0},
{BQ25790_FAULT_MSK_0, 0x0},
{BQ25790_FAULT_MSK_1, 0x0},
{BQ25790_ADC_CTRL, 0x30},
{BQ25790_FN_DISABE_0, 0x0},
{BQ25790_FN_DISABE_1, 0x0},
{BQ25790_ADC_IBUS_MSB, 0x0},
{BQ25790_ADC_IBUS_LSB, 0x0},
{BQ25790_ADC_IBAT_MSB, 0x0},
{BQ25790_ADC_IBAT_LSB, 0x0},
{BQ25790_ADC_VAC1, 0x0},
{BQ25790_ADC_VAC2, 0x0},
{BQ25790_ADC_VBAT_MSB, 0x0},
{BQ25790_ADC_VBAT_LSB, 0x0},
{BQ25790_ADC_VBUS_MSB, 0x0},
{BQ25790_ADC_VBUS_LSB, 0x0},
{BQ25790_ADC_TS, 0x0},
{BQ25790_ADC_TDIE, 0x0},
{BQ25790_ADC_DP, 0x0},
{BQ25790_ADC_DM, 0x0},
{BQ25790_DPDM_DRV, 0x0},
{BQ25790_PART_INFO, 0x0},
};
static int bq25790_watchdog_time[BQ25790_NUM_WD_VAL] = {0, 500, 1000, 2000,
20000, 40000, 80000,
160000};
static enum power_supply_usb_type bq25790_usb_type[] = {
POWER_SUPPLY_USB_TYPE_ACA,
POWER_SUPPLY_USB_TYPE_SDP,
POWER_SUPPLY_USB_TYPE_CDP,
POWER_SUPPLY_USB_TYPE_DCP,
POWER_SUPPLY_USB_TYPE_UNKNOWN,
};
static int bq25790_usb_notifier(struct notifier_block *nb, unsigned long val,
void *priv)
{
struct bq25790_device *bq =
container_of(nb, struct bq25790_device, usb_nb);
bq->usb_event = val;
queue_work(system_power_efficient_wq, &bq->usb_work);
return NOTIFY_OK;
}
static void bq25790_usb_work(struct work_struct *data)
{
struct bq25790_device *bq =
container_of(data, struct bq25790_device, usb_work);
switch (bq->usb_event) {
case USB_EVENT_ID:
break;
case USB_EVENT_NONE:
power_supply_changed(bq->charger);
break;
}
return;
dev_err(bq->dev, "Error switching to charger mode.\n");
}
static int bq25790_get_vbat_adc(struct bq25790_device *bq)
{
int ret;
int vbat_adc_lsb, vbat_adc_msb;
int vbat_adc;
ret = regmap_update_bits(bq->regmap, BQ25790_ADC_CTRL,
BQ25790_ADC_EN, BQ25790_ADC_EN);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_ADC_VBAT_MSB, &vbat_adc_msb);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_ADC_VBAT_LSB, &vbat_adc_lsb);
if (ret)
return ret;
vbat_adc = (vbat_adc_msb << 8) | vbat_adc_lsb;
return vbat_adc * BQ25790_ADC_VOLT_STEP_uV;
}
static int bq25790_get_vbus_adc(struct bq25790_device *bq)
{
int ret;
int vbus_adc_lsb, vbus_adc_msb;
int vbus_adc;
ret = regmap_update_bits(bq->regmap, BQ25790_ADC_CTRL,
BQ25790_ADC_EN, BQ25790_ADC_EN);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_ADC_VBUS_MSB, &vbus_adc_msb);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_ADC_VBUS_LSB, &vbus_adc_lsb);
if (ret)
return ret;
vbus_adc = (vbus_adc_msb << 8) | vbus_adc_lsb;
return vbus_adc * BQ25790_ADC_VOLT_STEP_uV;
}
static int bq25790_get_ibus_adc(struct bq25790_device *bq)
{
int ret;
int ibus_adc_lsb, ibus_adc_msb;
int ibus_adc;
ret = regmap_update_bits(bq->regmap, BQ25790_ADC_CTRL,
BQ25790_ADC_EN, BQ25790_ADC_EN);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_ADC_IBUS_MSB, &ibus_adc_msb);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_ADC_IBUS_LSB, &ibus_adc_lsb);
if (ret)
return ret;
ibus_adc = (ibus_adc_msb << 8) | ibus_adc_lsb;
return ibus_adc * BQ25790_ADC_CURR_STEP_uA;
}
static int bq25790_get_ibat_adc(struct bq25790_device *bq)
{
int ret;
unsigned int ibat_adc_lsb, ibat_adc_msb;
int ibat_adc;
ret = regmap_update_bits(bq->regmap, BQ25790_ADC_CTRL,
BQ25790_ADC_EN, BQ25790_ADC_EN);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_ADC_IBAT_MSB, &ibat_adc_msb);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_ADC_IBAT_LSB, &ibat_adc_lsb);
if (ret)
return ret;
ibat_adc = (ibat_adc_msb << 8) | ibat_adc_lsb;
return ibat_adc * BQ25790_ADC_CURR_STEP_uA;
}
static int bq25790_get_term_curr(struct bq25790_device *bq)
{
int ret;
int reg_val;
ret = regmap_read(bq->regmap, BQ25790_TERM_CTRL, ®_val);
if (ret)
return ret;
reg_val &= BQ25790_TERMCHRG_CUR_MASK;
return reg_val * BQ25790_TERMCHRG_CURRENT_STEP_uA;
}
static int bq25790_get_prechrg_curr(struct bq25790_device *bq)
{
int ret;
int reg_val;
ret = regmap_read(bq->regmap, BQ25790_PRECHRG_CTRL, ®_val);
if (ret)
return ret;
reg_val &= BQ25790_PRECHRG_CUR_MASK;
return reg_val * BQ25790_PRECHRG_CURRENT_STEP_uA;
}
static int bq25790_get_ichg_curr(struct bq25790_device *bq)
{
int ret;
int ichg, ichg_lsb, ichg_msb;
ret = regmap_read(bq->regmap, BQ25790_CHRG_I_LIM_LSB, &ichg_lsb);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_CHRG_I_LIM_MSB, &ichg_msb);
if (ret)
return ret;
ichg = (ichg_msb << 8) | ichg_lsb;
return ichg * BQ25790_ICHRG_CURRENT_STEP_uA;
}
static int bq25790_set_term_curr(struct bq25790_device *bq, int term_current)
{
int reg_val;
if (term_current < BQ25790_TERMCHRG_I_MIN_uA)
term_current = BQ25790_TERMCHRG_I_MIN_uA;
else if (term_current > BQ25790_TERMCHRG_I_MAX_uA)
term_current = BQ25790_TERMCHRG_I_MAX_uA;
reg_val = term_current / BQ25790_TERMCHRG_CURRENT_STEP_uA;
return regmap_update_bits(bq->regmap, BQ25790_TERM_CTRL,
BQ25790_TERMCHRG_CUR_MASK, reg_val);
}
static int bq25790_set_prechrg_curr(struct bq25790_device *bq, int pre_current)
{
int reg_val;
if (pre_current < BQ25790_PRECHRG_I_MIN_uA)
pre_current = BQ25790_PRECHRG_I_MIN_uA;
else if (pre_current > BQ25790_PRECHRG_I_MAX_uA)
pre_current = BQ25790_PRECHRG_I_MAX_uA;
reg_val = pre_current / BQ25790_PRECHRG_CURRENT_STEP_uA;
return regmap_update_bits(bq->regmap, BQ25790_PRECHRG_CTRL,
BQ25790_PRECHRG_CUR_MASK, reg_val);
}
static int bq25790_set_ichrg_curr(struct bq25790_device *bq, int chrg_curr)
{
int ret;
int ichg, ichg_msb, ichg_lsb;
if (chrg_curr < BQ25790_ICHRG_I_MIN_uA)
chrg_curr = BQ25790_ICHRG_I_MIN_uA;
else if ( chrg_curr > bq->init_data.max_ichg)
chrg_curr = bq->init_data.max_ichg;
ichg = chrg_curr / BQ25790_ICHRG_CURRENT_STEP_uA;
ichg_msb = (ichg >> 8) & 0xff;
ret = regmap_write(bq->regmap, BQ25790_CHRG_I_LIM_MSB, ichg_msb);
if (ret)
return ret;
ichg_lsb = ichg & 0xff;
return regmap_write(bq->regmap, BQ25790_CHRG_I_LIM_LSB, ichg_lsb);
}
static int bq25790_set_chrg_volt(struct bq25790_device *bq, int chrg_volt)
{
int vlim_lsb, vlim_msb, vlim;
int ret;
if (chrg_volt < BQ25790_VREG_V_MIN_uV)
chrg_volt = BQ25790_VREG_V_MIN_uV;
else if (chrg_volt > bq->init_data.max_vreg)
chrg_volt = bq->init_data.max_vreg;
vlim = chrg_volt / BQ25790_VREG_V_STEP_uV;
vlim_msb = (vlim >> 8) & 0xff;
ret = regmap_write(bq->regmap, BQ25790_CHRG_V_LIM_MSB, vlim_msb);
if (ret)
return ret;
vlim_lsb = vlim & 0xff;
return regmap_write(bq->regmap, BQ25790_CHRG_V_LIM_LSB, vlim_lsb);
}
static int bq25790_get_chrg_volt(struct bq25790_device *bq)
{
int ret;
int vlim_lsb, vlim_msb, chrg_volt;
ret = regmap_read(bq->regmap, BQ25790_CHRG_V_LIM_MSB, &vlim_msb);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_CHRG_V_LIM_LSB, &vlim_lsb);
if (ret)
return ret;
chrg_volt = (vlim_msb << 8) | vlim_lsb;
return chrg_volt * BQ25790_VREG_V_STEP_uV;
}
static int bq25790_set_input_volt_lim(struct bq25790_device *bq, int vindpm)
{
int ret;
int vlim_lsb, vlim_msb;
int vlim;
if (vindpm < BQ25790_VINDPM_V_MIN_uV ||
vindpm > BQ25790_VINDPM_V_MAX_uV)
return -EINVAL;
vlim = vindpm / BQ25790_VINDPM_STEP_uV;
vlim_msb = (vlim >> 8) & 0xff;
ret = regmap_write(bq->regmap, BQ25790_INPUT_V_LIM, vlim_msb);
if (ret)
return ret;
vlim_lsb = vlim & 0xff;
return regmap_write(bq->regmap, BQ25790_INPUT_V_LIM, vlim_lsb);
}
static int bq25790_get_input_volt_lim(struct bq25790_device *bq)
{
int ret;
int vlim;
ret = regmap_read(bq->regmap, BQ25790_INPUT_V_LIM, &vlim);
if (ret)
return ret;
return vlim * BQ25790_VINDPM_STEP_uV;
}
static int bq25790_set_input_curr_lim(struct bq25790_device *bq, int iindpm)
{
int ret;
int ilim, ilim_lsb, ilim_msb;
if (iindpm < BQ25790_IINDPM_I_MIN_uA ||
iindpm > BQ25790_IINDPM_I_MAX_uA)
return -EINVAL;
ilim = iindpm / BQ25790_IINDPM_STEP_uA;
ilim_msb = (ilim >> 8) & 0xff;
ret = regmap_write(bq->regmap, BQ25790_INPUT_I_LIM_MSB, ilim_msb);
if (ret)
return ret;
ilim_lsb = ilim & 0xff;
return regmap_write(bq->regmap, BQ25790_INPUT_I_LIM_LSB, ilim_lsb);
}
static int bq25790_get_input_curr_lim(struct bq25790_device *bq)
{
int ret;
int ilim_msb, ilim_lsb;
u16 ilim;
ret = regmap_read(bq->regmap, BQ25790_INPUT_I_LIM_MSB, &ilim_msb);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_INPUT_I_LIM_LSB, &ilim_lsb);
if (ret)
return ret;
ilim = (ilim_msb << 8) | ilim_lsb;
return ilim * BQ25790_IINDPM_STEP_uA;
}
static int bq25790_get_state(struct bq25790_device *bq,
struct bq25790_state *state)
{
int chrg_stat_0, chrg_stat_1, chrg_stat_3, chrg_stat_4;
int chrg_ctrl_0, fault_0, fault_1;
int ret;
ret = regmap_read(bq->regmap, BQ25790_CHRG_STAT_0, &chrg_stat_0);
if (ret)
return ret;
state->vbus_status = chrg_stat_0 & BQ25790_VBUS_PRESENT;
state->online = chrg_stat_0 & BQ25790_PG_STAT;
ret = regmap_read(bq->regmap, BQ25790_CHRG_STAT_1, &chrg_stat_1);
if (ret)
return ret;
ret = regmap_read(bq->regmap, BQ25790_CHRG_CTRL_0, &chrg_ctrl_0);
if (ret)
return ret;
if (chrg_ctrl_0 & BQ25790_CHRG_EN)
state->chrg_status = chrg_stat_1 & BQ25790_CHG_STAT_MSK;
else
state->chrg_status = BQ25790_NOT_CHRGING;
state->chrg_type = chrg_stat_1 & BQ25790_VBUS_STAT_MSK;
ret = regmap_read(bq->regmap, BQ25790_CHRG_STAT_4, &chrg_stat_4);
if (ret)
return ret;
state->health = chrg_stat_4 & BQ25790_TEMP_MASK;
ret = regmap_read(bq->regmap, BQ25790_FAULT_STAT_0, &fault_0);
if (ret)
return ret;
state->fault_0 = fault_0;
ret = regmap_read(bq->regmap, BQ25790_FAULT_STAT_1, &fault_1);
if (ret)
return ret;
state->fault_1 = fault_1;
ret = regmap_read(bq->regmap, BQ25790_CHRG_STAT_3, &chrg_stat_3);
if (ret)
return ret;
state->vbat_adc = bq25790_get_vbat_adc(bq);
state->vbus_adc = bq25790_get_vbus_adc(bq);
state->ibat_adc = bq25790_get_ibat_adc(bq);
state->ibus_adc = bq25790_get_ibus_adc(bq);
return 0;
}
static int bq25790_charger_set_property(struct power_supply *psy,
enum power_supply_property prop,
const union power_supply_propval *val)
{
struct bq25790_device *bq = power_supply_get_drvdata(psy);
int ret = -EINVAL;
switch (prop) {
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
ret = bq25790_set_input_curr_lim(bq, val->intval);
break;
case POWER_SUPPLY_PROP_STATUS:
break;
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
ret = bq25790_set_input_volt_lim(bq, val->intval);
break;
default:
return -EINVAL;
}
return ret;
}
static int bq25790_battery_set_property(struct power_supply *psy,
enum power_supply_property prop,
const union power_supply_propval *val)
{
struct bq25790_device *bq = power_supply_get_drvdata(psy);
int ret = -EINVAL;
switch (prop) {
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
ret = bq25790_set_chrg_volt(bq, val->intval);
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
ret = bq25790_set_ichrg_curr(bq, val->intval);
break;
case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
ret = bq25790_set_prechrg_curr(bq, val->intval);
break;
case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
ret = bq25790_set_term_curr(bq, val->intval);
break;
default:
return -EINVAL;
}
return ret;
}
static int bq25790_charger_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct bq25790_device *bq = power_supply_get_drvdata(psy);
struct bq25790_state state;
int ret = 0;
mutex_lock(&bq->lock);
ret = bq25790_get_state(bq, &state);
mutex_unlock(&bq->lock);
if (ret)
return ret;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
if (!state.chrg_type || (state.chrg_type == BQ25790_OTG_MODE))
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
else if (!state.chrg_status)
val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
else if (state.chrg_status == BQ25790_TERM_CHRG)
val->intval = POWER_SUPPLY_STATUS_FULL;
else
val->intval = POWER_SUPPLY_STATUS_CHARGING;
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
switch (state.chrg_status) {
case BQ25790_TRICKLE_CHRG:
val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
break;
case BQ25790_PRECHRG:
val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
break;
case BQ25790_FAST_CHRG:
val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
break;
case BQ25790_TAPER_CHRG:
val->intval = POWER_SUPPLY_CHARGE_TYPE_STANDARD;
break;
case BQ25790_TOP_OFF_CHRG:
val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
break;
case BQ25790_NOT_CHRGING:
val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
break;
default:
val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
}
break;
case POWER_SUPPLY_PROP_MANUFACTURER:
val->strval = BQ25790_MANUFACTURER;
break;
case POWER_SUPPLY_PROP_MODEL_NAME:
val->strval = BQ25790_NAME;
break;
case POWER_SUPPLY_PROP_ONLINE:
val->intval = state.online;
break;
case POWER_SUPPLY_PROP_USB_TYPE:
if (!state.chrg_type) {
val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
break;
}
switch (state.chrg_type) {
case BQ25790_USB_SDP:
val->intval = POWER_SUPPLY_USB_TYPE_SDP;
break;
case BQ25790_USB_CDP:
val->intval = POWER_SUPPLY_USB_TYPE_CDP;
break;
case BQ25790_USB_DCP:
val->intval = POWER_SUPPLY_USB_TYPE_DCP;
break;
case BQ25790_OTG_MODE:
val->intval = POWER_SUPPLY_USB_TYPE_ACA;
break;
default:
val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
break;
}
break;
case POWER_SUPPLY_PROP_HEALTH:
if (state.fault_1 && (BQ25790_OTG_OVP | BQ25790_VSYS_OVP))
val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
else
val->intval = POWER_SUPPLY_HEALTH_GOOD;
switch (state.health) {
case BQ25790_TEMP_HOT:
val->intval = POWER_SUPPLY_HEALTH_HOT;
break;
case BQ25790_TEMP_WARM:
val->intval = POWER_SUPPLY_HEALTH_WARM;
break;
case BQ25790_TEMP_COOL:
val->intval = POWER_SUPPLY_HEALTH_COOL;
break;
case BQ25790_TEMP_COLD:
val->intval = POWER_SUPPLY_HEALTH_COLD;
break;
}
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = state.vbus_adc;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
val->intval = state.ibus_adc;
break;
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
ret = bq25790_get_input_volt_lim(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
ret = bq25790_get_input_curr_lim(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
default:
return -EINVAL;
}
return ret;
}
static int bq25790_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct bq25790_device *bq = power_supply_get_drvdata(psy);
struct bq25790_state state;
int ret = 0;
mutex_lock(&bq->lock);
ret = bq25790_get_state(bq, &state);
mutex_unlock(&bq->lock);
if (ret)
return ret;
ret = regmap_update_bits(bq->regmap, BQ25790_ADC_CTRL,
BQ25790_ADC_EN, BQ25790_ADC_EN);
if (ret)
return ret;
switch (psp) {
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = state.vbat_adc;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
val->intval = state.ibat_adc;
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
ret = bq25790_get_ichg_curr(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
val->intval = bq->init_data.max_ichg;
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
ret = bq25790_get_chrg_volt(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
val->intval = bq->init_data.max_vreg;
break;
case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
ret = bq25790_get_prechrg_curr(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
ret = bq25790_get_term_curr(bq);
if (ret < 0)
return ret;
val->intval = ret;
break;
default:
return -EINVAL;
}
return ret;
}
static bool bq25790_state_changed(struct bq25790_device *bq,
struct bq25790_state *new_state)
{
struct bq25790_state old_state;
mutex_lock(&bq->lock);
old_state = bq->state;
mutex_unlock(&bq->lock);
return (old_state.chrg_status != new_state->chrg_status ||
old_state.chrg_fault != new_state->chrg_fault ||
old_state.online != new_state->online ||
old_state.health != new_state->health ||
old_state.fault_0 != new_state->fault_0 ||
old_state.fault_1 != new_state->fault_1 ||
old_state.chrg_type != new_state->chrg_type ||
old_state.vbat_adc != new_state->vbat_adc ||
old_state.vbus_adc != new_state->vbus_adc ||
old_state.ibat_adc != new_state->ibat_adc);
}
static irqreturn_t bq25790_irq_handler_thread(int irq, void *private)
{
struct bq25790_device *bq = private;
struct bq25790_state state;
int ret;
ret = bq25790_get_state(bq, &state);
if (ret < 0)
goto irq_out;
if (!bq25790_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 bq25790_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_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
POWER_SUPPLY_PROP_CHARGE_TYPE,
POWER_SUPPLY_PROP_USB_TYPE,
};
static enum power_supply_property bq25790_battery_props[] = {
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
};
static char *bq25790_charger_supplied_to[] = {
"main-battery",
};
static int bq25790_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 bq25790_power_supply_desc = {
.name = "bq25790-charger",
.type = POWER_SUPPLY_TYPE_USB,
.usb_types = bq25790_usb_type,
.num_usb_types = ARRAY_SIZE(bq25790_usb_type),
.properties = bq25790_power_supply_props,
.num_properties = ARRAY_SIZE(bq25790_power_supply_props),
.get_property = bq25790_charger_get_property,
.set_property = bq25790_charger_set_property,
.property_is_writeable = bq25790_property_is_writeable,
};
static const struct power_supply_desc bq25790_battery_desc = {
.name = "bq25790-battery",
.type = POWER_SUPPLY_TYPE_BATTERY,
.get_property = bq25790_battery_get_property,
.set_property = bq25790_battery_set_property,
.properties = bq25790_battery_props,
.num_properties = ARRAY_SIZE(bq25790_battery_props),
.property_is_writeable = bq25790_property_is_writeable,
};
static bool bq25790_is_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case BQ25790_ICO_I_LIM…BQ25790_FAULT_FLAG_1:
case BQ25790_ADC_CTRL…BQ25790_ADC_DM:
case BQ25790_CHRG_CTRL_0:
return true;
default:
return false;
}
}
static const struct regmap_config bq25790_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = BQ25790_PART_INFO,
.reg_defaults = bq25790_reg_defs,
.num_reg_defaults = ARRAY_SIZE(bq25790_reg_defs),
.cache_type = REGCACHE_RBTREE,
.volatile_reg = bq25790_is_volatile_reg,
};
static int bq25790_power_supply_init(struct bq25790_device *bq,
struct device *dev)
{
struct power_supply_config psy_cfg = { .drv_data = bq,
.of_node = dev->of_node, };
psy_cfg.supplied_to = bq25790_charger_supplied_to;
psy_cfg.num_supplicants = ARRAY_SIZE(bq25790_charger_supplied_to);
bq->charger = devm_power_supply_register(bq->dev,
&bq25790_power_supply_desc,
&psy_cfg);
if (IS_ERR(bq->charger))
return -EINVAL;
bq->battery = devm_power_supply_register(bq->dev,
&bq25790_battery_desc,
&psy_cfg);
if (IS_ERR(bq->battery))
return -EINVAL;
return 0;
}
static int bq25790_hw_init(struct bq25790_device *bq)
{
int ret = 0;
int wd_reg_val = BQ25790_WATCHDOG_DIS;
int i;
struct power_supply_battery_info bat_info = { };
if (bq->watchdog_timer) {
for (i = 0; i < BQ25790_NUM_WD_VAL; i++) {
if (bq->watchdog_timer > bq25790_watchdog_time[i] &&
bq->watchdog_timer < bq25790_watchdog_time[i + 1])
wd_reg_val = i;
}
}
ret = regmap_update_bits(bq->regmap, BQ25790_CHRG_CTRL_1,
BQ25790_WATCHDOG_MASK, wd_reg_val);
ret = power_supply_get_battery_info(bq->charger, &bat_info);
if (ret) {
dev_warn(bq->dev, "battery info missing, default values will be applied\n");
bat_info.constant_charge_current_max_ua =
BQ25790_ICHRG_I_DEF_uA;
bat_info.constant_charge_voltage_max_uv =
BQ25790_VREG_V_DEF_uV;
bat_info.precharge_current_ua =
BQ25790_PRECHRG_I_DEF_uA;
bat_info.charge_term_current_ua =
BQ25790_TERMCHRG_I_DEF_uA;
bq->init_data.max_ichg =
BQ25790_ICHRG_I_MAX_uA;
bq->init_data.max_vreg =
BQ25790_VREG_V_MAX_uV;
} else {
bq->init_data.max_ichg =
bat_info.constant_charge_current_max_ua;
bq->init_data.max_vreg =
bat_info.constant_charge_voltage_max_uv;
}
ret = bq25790_set_ichrg_curr(bq,
bat_info.constant_charge_current_max_ua);
if (ret)
goto err_out;
ret = bq25790_set_prechrg_curr(bq, bat_info.precharge_current_ua);
if (ret)
goto err_out;
ret = bq25790_set_chrg_volt(bq,
bat_info.constant_charge_voltage_max_uv);
if (ret)
goto err_out;
ret = bq25790_set_term_curr(bq, bat_info.charge_term_current_ua);
if (ret)
goto err_out;
ret = bq25790_set_input_volt_lim(bq, bq->init_data.vlim);
if (ret)
goto err_out;
ret = bq25790_set_input_curr_lim(bq, bq->init_data.ilim);
if (ret)
goto err_out;
return 0;
err_out:
return ret;
}
static int bq25790_parse_dt(struct bq25790_device *bq)
{
int ret;
ret = device_property_read_u32(bq->dev, "watchdog-timer",
&bq->watchdog_timer);
if (ret)
bq->watchdog_timer = BQ25790_WATCHDOG_DIS;
if (bq->watchdog_timer > BQ25790_WATCHDOG_MAX ||
bq->watchdog_timer < BQ25790_WATCHDOG_DIS)
return -EINVAL;
ret = device_property_read_u32(bq->dev,
"input-voltage-limit-microvolt",
&bq->init_data.vlim);
if (ret)
bq->init_data.vlim = BQ25790_VINDPM_DEF_uV;
if (bq->init_data.vlim > BQ25790_VINDPM_V_MAX_uV ||
bq->init_data.vlim < BQ25790_VINDPM_V_MIN_uV)
return -EINVAL;
ret = device_property_read_u32(bq->dev,
"input-current-limit-microamp",
&bq->init_data.ilim);
if (ret)
bq->init_data.ilim = BQ25790_IINDPM_DEF_uA;
if (bq->init_data.ilim > BQ25790_IINDPM_I_MAX_uA ||
bq->init_data.ilim < BQ25790_IINDPM_I_MIN_uA)
return -EINVAL;
return 0;
}
static int bq25790_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct bq25790_device *bq;
int ret;
dev_err(dev, "############ bq25790_probe 0 ############\n");
bq = devm_kzalloc(dev, sizeof(*bq), GFP_KERNEL);
if (!bq)
return -ENOMEM;
dev_err(dev, "############ bq25790_probe 1 ############\n");
bq->client = client;
bq->dev = dev;
mutex_init(&bq->lock);
strncpy(bq->model_name, id->name, I2C_NAME_SIZE);
bq->regmap = devm_regmap_init_i2c(client, &bq25790_regmap_config);
if (IS_ERR(bq->regmap)) {
dev_err(dev, "Failed to allocate register map\n");
return PTR_ERR(bq->regmap);
}
dev_err(dev, "############ bq25790_probe 2 ############\n");
i2c_set_clientdata(client, bq);
ret = bq25790_parse_dt(bq);
if (ret) {
dev_err(dev, "Failed to read device tree properties%d\n", ret);
return ret;
}
dev_err(dev, "############ bq25790_probe 3 ############\n");
/* 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, bq25790_usb_work);
bq->usb_nb.notifier_call = bq25790_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, bq25790_usb_work);
bq->usb_nb.notifier_call = bq25790_usb_notifier;
usb_register_notifier(bq->usb3_phy, &bq->usb_nb);
}
if (client->irq) {
ret = devm_request_threaded_irq(dev, client->irq, NULL,
bq25790_irq_handler_thread,
IRQF_TRIGGER_FALLING |
IRQF_ONESHOT,
dev_name(&client->dev), bq);
if (ret)
goto error_out;
}
dev_err(dev, "############ bq25790_probe 4 ############\n");
ret = bq25790_power_supply_init(bq, dev);
if (ret) {
dev_err(dev, "Failed to register power supply\n");
goto error_out;
}
dev_err(dev, "############ bq25790_probe 5 ############\n");
ret = bq25790_hw_init(bq);
if (ret) {
dev_err(dev, "Cannot initialize the chip.\n");
goto error_out;
}
dev_err(dev, "############ bq25790_probe ok ############\n");
return ret;
error_out:
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);
dev_err(dev, "############ bq25790_probe 6 ############\n");
return ret;
}
static const struct i2c_device_id bq25790_i2c_ids[] = {
{ BQ25790_NAME, 0 },
{},
};
MODULE_DEVICE_TABLE(i2c, bq25790_i2c_ids);
static const struct of_device_id bq25790_of_match[] = {
{ .compatible = "ti,bq25790", },
{ },
};
MODULE_DEVICE_TABLE(of, bq25790_of_match);
static const struct acpi_device_id bq25790_acpi_match[] = {
{BQ25790_NAME, 0},
{},
};
MODULE_DEVICE_TABLE(acpi, bq25790_acpi_match);
static struct i2c_driver bq25790_driver = {
.driver = {
.name = "bq25790-charger",
.of_match_table = bq25790_of_match,
.acpi_match_table = ACPI_PTR(bq25790_acpi_match),
},
.probe = bq25790_probe,
.id_table = bq25790_i2c_ids,
};
module_i2c_driver(bq25790_driver);
MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
MODULE_AUTHOR("Ricardo Rivera-Matos <r-rivera-matos@ti.com>");
MODULE_DESCRIPTION("bq25790 charger driver");
MODULE_LICENSE("GPL v2");
,
Cherry Zhou：
您好，由于充电器可以在 WD 到期时更改某些寄存器，工程师需要读取所有寄存器，不是最初写入的寄存器。
此外，如果 BATREG 写入 3.6V ，那么 SYSMIN 写入什么？ 如果电池电压为 4.2V，那么充电器应该报告 BAT_OVP。 如果 SYSMIN 高于 3.6V，充电器就会无法正常工作。 最后，如果 WD 到期，SYSMIN 和 ICHG 会根据 Cells 引脚设置返回默认值，但目前似乎带有 Cells 位的 REG0x0A 似乎没有写入？
