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[参考译文] BQ24179:充电电流问题

Guru**** 633810 points
Other Parts Discussed in Thread: BQ25790, BQ24179
请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1069664/bq24179-charging-current-issue

部件号:BQ24179
线程中讨论的其他部件:BQ25790

大家好,团队

客户提出的问题可能需要您的帮助:

BQ24179用作 uis8581上的外部充电 IC。 软件驱动器是 BQ25790的驱动器。 设备电池电压为3.7伏,而实际充电电流仅为200mA,驱动器设置的充电电流为1A。 下面是硬件设计示意图:

请帮您检查此案例? 谢谢。

此致,

樱桃

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    您好,

    只需快速更新:

    通过软件获取日志,发现该软件始终以 BQ257990_PRECHRG 模式获得充电状态,无论它插入 PC USB 还是12V PD 协议充电头。

    谢谢,致以诚挚的问候,

    樱桃

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    你好,Cherry,

    PROG 引脚电阻器设置为2S 蓄电池。  3.7V 蓄电池导致2S 设置预充电。

    此致,

    杰夫

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    您好 Jeff,

    它们已将针脚电阻更改为4.7K,充电电流始终为1.4A。 该电池为4.2V,5000MA 锂电池。

    有两个问题:

    1.充电期间始终保持5 V 电压,并且它们使用支持5 V,9 V,12 V 电压的 PD 充电头。芯片无增压作用。

    2,充电始终是恒定电流充电,整个过程约为1.4A,电池充电至4.2 V,充电电流不会降低。

    请检查一下。 谢谢。

    此致,

    樱桃

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    你好,Cherry,

    我需要查看 I2C 寄存器设置,包括状态和故障寄存器。

    此致,

    杰夫

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    您好 Jeff,

    它是:

    静态结构 reg_default bq257990_reg_defs[]={
    {BQ257990_input_V_Lim,0x24},
    {BQ257990_input_I_Lim _MSB,0x01},
    {BQ257990_input_I_Lim _LSB,0x2C},
    {BQ257990_PRECHRG_CTRL,0xc3},
    {BQ257990_TERM_CTRL,0x5},
    {BQ257990_VOTG}REG,0xdc},
    {BQ257990_IOTG_REG,0x4b},
    {BQ257990_TIMER _CTRL,0x3D},
    {BQ257990_CHRG_CTRL_0,0xa2},
    {BQ257990_CHRG_CTRL_1,0x85},
    {BQ257990_CHRG_CTRL_2,0x40},
    {BQ257990_CHRG_CTRL_3,0x12},
    {BQ257990_CHRG_CTRL_5,0x16},
    {BQ257990_MPPT_CTRL,0xAA},
    {BQ257990_TEMP_CTRL,0xc0},
    {BQ257990_NTC_CTRL_0,0x7a},
    {BQ257990_NTC_CTRL_1,0x54},
    {BQ257990_ICO_I_Lim,0x0},
    {BQ257990_CHRG_STAT_0,0x0},
    {BQ257990_CHRG_STAT_1,0x0},
    {BQ257990_CHRG_STAT_2,0x0},
    {BQ257990_CHRG_STAT_3,0x0},
    {BQ257990_CHRG_STAT_4,0x0},
    {BQ257990_Fault_STAT_0,0x0},
    {BQ257990_Fault_STAT_1,0x0},
    {BQ257990_CHRG_FLAG_0,0x0},
    {BQ257990_CHRG_FLAG_1,0x0},
    {BQ257990_CHRG_FLAG_2,0x0},
    {BQ257990_CHRG_FLAG_3,0x0},
    {BQ257990_fault_flag_0,0x0},
    {BQ257990_fault_flag_1,0x0},
    {BQ257990_CHRG_MSK_0,0x0},
    {BQ257990_CHRG_MSK_1,0x0},
    {BQ257990_CHRG_MSK_2,0x0},
    {BQ257990_CHRG_MSK_3,0x0},
    {BQ257990_Fault_MSK_0,0x0},
    {BQ257990_Fault_MSK_1,0x0},
    {BQ257990_ADC_CTRL,0x30},
    {BQ2579S_FN_DISABE_0,0x0},
    {BQ2579S_FN_DISABE_1,0x0},
    {BQ257990_ADC_IBUS_MSB,0x0},
    {BQ257990_ADC_IBUS_LSB,0x0},
    {BQ257990_ADC_IBAT_MSB,0x0},
    {BQ257990_ADC_IBAT_LSB,0x0},
    {BQ257990_ADC_VAC1,0x0},
    {BQ257990_ADC_VAC2,0x0},
    {BQ257990_ADC_VBAT_MSB,0x0},
    {BQ257990_ADC_VBAT_LSB,0x0},
    {BQ257990_ADC_VBUS_MSB,0x0},
    {BQ257990_ADC_VBUS_LSB,0x0},
    {BQ257990_ADC_TS,0x0},
    {BQ257990_ADC_TDIE,0x0},
    {BQ257990_ADC_DP,0x0},
    {BQ257990_ADC_DM,0x0},
    {BQ257990_DPDM_DRV,0x0},
    {BQ257990_part_info,0x0},
    };

    他们正在使用默认配置。

    谢谢,此致,

    樱桃

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    你好,Cherry,

    I2C 寄存器列表缺少一些密钥寄存器,如 SYSMIN,BATREG 和 Cells。 除非两次读取且第二次读取清除了该寄存器,否则我不希望所有的标志寄存器都为零。  如果我有 REG0x01 0xAA 数据,那就更容易了。  

    关于上面的问题1,您的意思是“没有激励行动”?  您是否说 SW1/2没有切换操作?  充电器无法直接与 USB C 型 PD 通信,因为它没有 CCX 引脚。  

    关于问题2,如果充电器正在切换且充电电流未降低,但 ATP 感应到4.2V,则 BATREG 电压高于4.2V 或 IC 损坏。

    此致,

    杰夫  

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    您好 Jeff,

    REG0x01写入的值为3600000。 以下是驱动程序代码:

     /* 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, &reg_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, &reg_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");
    

    谢谢,此致,

    樱桃

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    你好,Cherry,

    因为充电器可以在 WD 到期时更改某些寄存器,所以我需要读取所有寄存器,而不是最初写入的寄存器。  此外,如果 BATREG 写入3.6V,则 SMIN 写入的内容是什么?  如果蓄电池电压为4.2V,充电器应报告 BAT_OVP。  如果 SMIN 高于3.6V,充电器将无法正常工作。  最后,如果 WD 过期,则根据单元格的 PIN 设置,SYSMIN 和 ICHG 将恢复为默认值,但我看不到写入包含单元格位的 REG0x0A 的内容。

    此致,

    杰夫