/*
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* (C) Copyright 2019 Fuzhou Rockchip Electronics Co., Ltd
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/gpio.h>
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#include <dm/device.h>
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#include <dm/uclass.h>
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#include <power/fuel_gauge.h>
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#include <power/pmic.h>
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#include <power/power_delivery/power_delivery.h>
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#include <linux/usb/phy-rockchip-usb2.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define BQ25700_ID 0x25700
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#define BQ25703_ID 0x25703
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#define COMPAT_BQ25700 "ti,bq25700"
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#define COMPAT_BQ25703 "ti,bq25703"
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#define BQ25700_I2C_SPEED 100000
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#define BQ25700_CHARGE_CURRENT_1500MA 0x5C0
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#define BQ25700_SDP_INPUT_CURRENT_500MA 0xA00
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#define BQ25700_DCP_INPUT_CURRENT_1500MA 0x1E00
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#define BQ25700_DCP_INPUT_CURRENT_2000MA 0x2800
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#define BQ25700_DCP_INPUT_CURRENT_3000MA 0x3C00
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#define WATCHDOG_ENSABLE (0x03 << 13)
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#define BQ25700_CHARGEOPTION0_REG 0x12
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#define BQ25700_CHARGECURREN_REG 0x14
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#define BQ25700_CHARGERSTAUS_REG 0x20
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#define BQ25700_INPUTVOLTAGE_REG 0x3D
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#define BQ25700_INPUTCURREN_REG 0x3F
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#define BQ25703_CHARGEOPTION0_REG 0x00
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#define BQ25703_CHARGECURREN_REG 0x02
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#define BQ25703_CHARGERSTAUS_REG 0x20
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#define BQ25703_INPUTVOLTAGE_REG 0x0A
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#define BQ25703_INPUTCURREN_REG 0x0E
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enum bq25700_table_ids {
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/* range tables */
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TBL_ICHG,
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TBL_CHGMAX,
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TBL_INPUTVOL,
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TBL_INPUTCUR,
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TBL_SYSVMIN,
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TBL_OTGVOL,
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TBL_OTGCUR,
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TBL_EXTCON,
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};
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struct bq25700 {
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struct udevice *dev;
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u32 ichg;
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u32 chip_id;
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struct udevice *pd;
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};
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struct bq25700_range {
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u32 min;
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u32 max;
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u32 step;
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};
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static int bq25700_read(struct bq25700 *charger, uint reg)
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{
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u16 val;
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int ret;
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ret = dm_i2c_read(charger->dev, reg, (u8 *)&val, 2);
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if (ret) {
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debug("write error to device: %p register: %#x!",
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charger->dev, reg);
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return ret;
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}
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return val;
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}
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static int bq25700_write(struct bq25700 *charger, uint reg, u16 val)
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{
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int ret;
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ret = dm_i2c_write(charger->dev, reg, (u8 *)&val, 2);
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if (ret) {
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debug("write error to device: %p register: %#x!",
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charger->dev, reg);
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return ret;
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}
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return 0;
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}
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static const union {
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struct bq25700_range rt;
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} bq25700_tables[] = {
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/* range tables */
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[TBL_ICHG] = { .rt = {0, 8128000, 64000} },
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/* uV */
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[TBL_CHGMAX] = { .rt = {0, 19200000, 16000} },
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/* uV max charge voltage*/
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[TBL_INPUTVOL] = { .rt = {3200000, 19520000, 64000} },
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/* uV input charge voltage*/
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[TBL_INPUTCUR] = {.rt = {0, 6350000, 50000} },
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/*uA input current*/
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[TBL_SYSVMIN] = { .rt = {1024000, 16182000, 256000} },
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/* uV min system voltage*/
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[TBL_OTGVOL] = {.rt = {4480000, 20800000, 64000} },
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/*uV OTG volage*/
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[TBL_OTGCUR] = {.rt = {0, 6350000, 50000} },
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};
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static u32 bq25700_find_idx(u32 value, enum bq25700_table_ids id)
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{
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const struct bq25700_range *rtbl = &bq25700_tables[id].rt;
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u32 rtbl_size;
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u32 idx;
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rtbl_size = (rtbl->max - rtbl->min) / rtbl->step + 1;
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for (idx = 1;
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idx < rtbl_size && (idx * rtbl->step + rtbl->min <= value);
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idx++)
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;
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return idx - 1;
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}
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static bool bq25700_charger_status(struct bq25700 *charger)
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{
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int state_of_charger;
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u16 value;
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value = bq25700_read(charger, BQ25700_CHARGERSTAUS_REG);
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state_of_charger = value >> 15;
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return state_of_charger;
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}
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static bool bq25703_charger_status(struct bq25700 *charger)
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{
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int state_of_charger;
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u16 value;
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value = bq25700_read(charger, BQ25703_CHARGERSTAUS_REG);
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state_of_charger = value >> 15;
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return state_of_charger;
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}
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static bool bq257xx_charger_status(struct udevice *dev)
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{
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struct bq25700 *charger = dev_get_priv(dev);
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if (charger->chip_id == BQ25700_ID)
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return bq25700_charger_status(charger);
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else
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return bq25703_charger_status(charger);
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}
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static int bq25700_charger_capability(struct udevice *dev)
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{
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return FG_CAP_CHARGER;
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}
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static int bq25700_get_usb_type(void)
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{
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#ifdef CONFIG_PHY_ROCKCHIP_INNO_USB2
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return rockchip_chg_get_type();
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#else
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return 0;
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#endif
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}
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static int bq25700_get_pd_output_val(struct bq25700 *charger,
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int *vol, int *cur)
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{
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struct power_delivery_data pd_data;
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int ret;
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if (!charger->pd)
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return -EINVAL;
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memset(&pd_data, 0, sizeof(pd_data));
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ret = power_delivery_get_data(charger->pd, &pd_data);
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if (ret)
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return ret;
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if (!pd_data.online || !pd_data.voltage || !pd_data.current)
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return -EINVAL;
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*vol = pd_data.voltage;
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*cur = pd_data.current;
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return 0;
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}
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static void bq25700_charger_current_init(struct bq25700 *charger)
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{
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u16 charge_current = BQ25700_CHARGE_CURRENT_1500MA;
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u16 sdp_inputcurrent = BQ25700_SDP_INPUT_CURRENT_500MA;
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u16 dcp_inputcurrent = BQ25700_DCP_INPUT_CURRENT_1500MA;
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int pd_inputvol, pd_inputcurrent;
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u16 vol_idx = 0, cur_idx;
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u16 temp;
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temp = bq25700_read(charger, BQ25700_CHARGEOPTION0_REG);
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temp &= (~WATCHDOG_ENSABLE);
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bq25700_write(charger, BQ25700_CHARGEOPTION0_REG, temp);
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if (!bq25700_get_pd_output_val(charger, &pd_inputvol,
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&pd_inputcurrent)) {
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printf("%s pd charge input vol:%duv current:%dua\n",
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__func__, pd_inputvol, pd_inputcurrent);
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if (pd_inputvol > 5000000) {
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vol_idx = bq25700_find_idx((pd_inputvol - 1280000 - 3200000),
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TBL_INPUTVOL);
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vol_idx = vol_idx << 6;
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}
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cur_idx = bq25700_find_idx(pd_inputcurrent,
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TBL_INPUTCUR);
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cur_idx = cur_idx << 8;
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if (pd_inputcurrent != 0) {
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bq25700_write(charger, BQ25700_INPUTCURREN_REG,
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cur_idx);
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if (vol_idx)
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bq25700_write(charger, BQ25700_INPUTVOLTAGE_REG,
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vol_idx);
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charge_current = bq25700_find_idx(charger->ichg,
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TBL_ICHG);
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charge_current = charge_current << 8;
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}
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} else {
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if (bq25700_get_usb_type() > 1)
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bq25700_write(charger, BQ25700_INPUTCURREN_REG,
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dcp_inputcurrent);
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else
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bq25700_write(charger, BQ25700_INPUTCURREN_REG,
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sdp_inputcurrent);
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}
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if (bq25700_charger_status(charger))
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bq25700_write(charger, BQ25700_CHARGECURREN_REG,
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charge_current);
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}
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static void bq25703_charger_current_init(struct bq25700 *charger)
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{
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u16 charge_current = BQ25700_CHARGE_CURRENT_1500MA;
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u16 sdp_inputcurrent = BQ25700_SDP_INPUT_CURRENT_500MA;
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u16 dcp_inputcurrent = BQ25700_DCP_INPUT_CURRENT_1500MA;
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int pd_inputvol, pd_inputcurrent;
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u16 vol_idx = 0, cur_idx;
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u16 temp;
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temp = bq25700_read(charger, BQ25703_CHARGEOPTION0_REG);
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temp &= (~WATCHDOG_ENSABLE);
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bq25700_write(charger, BQ25703_CHARGEOPTION0_REG, temp);
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if (!bq25700_get_pd_output_val(charger, &pd_inputvol,
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&pd_inputcurrent)) {
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printf("%s pd charge input vol:%duv current:%dua\n",
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__func__, pd_inputvol, pd_inputcurrent);
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if (pd_inputvol > 5000000) {
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vol_idx = bq25700_find_idx(pd_inputvol - 1280000 - 3200000,
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TBL_INPUTVOL);
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vol_idx = vol_idx << 6;
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}
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cur_idx = bq25700_find_idx(pd_inputcurrent,
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TBL_INPUTCUR);
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cur_idx = cur_idx << 8;
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if (pd_inputcurrent != 0) {
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bq25700_write(charger, BQ25703_INPUTCURREN_REG,
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cur_idx);
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if (vol_idx)
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bq25700_write(charger, BQ25703_INPUTVOLTAGE_REG,
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vol_idx);
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charge_current = bq25700_find_idx(charger->ichg,
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TBL_ICHG);
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charge_current = charge_current << 8;
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}
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} else {
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if (bq25700_get_usb_type() > 1)
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bq25700_write(charger, BQ25703_INPUTCURREN_REG,
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dcp_inputcurrent);
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else
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bq25700_write(charger, BQ25703_INPUTCURREN_REG,
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sdp_inputcurrent);
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}
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if (bq25703_charger_status(charger))
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bq25700_write(charger, BQ25703_CHARGECURREN_REG,
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charge_current);
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}
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static int bq25700_ofdata_to_platdata(struct udevice *dev)
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{
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struct bq25700 *charger = dev_get_priv(dev);
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const void *blob = gd->fdt_blob;
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int node, node1;
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charger->dev = dev;
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node = fdt_node_offset_by_compatible(blob, 0, COMPAT_BQ25700);
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node1 = fdt_node_offset_by_compatible(blob, 0, COMPAT_BQ25703);
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if ((node < 0) && (node1 < 0)) {
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printf("Can't find dts node for charger bq25700\n");
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return -ENODEV;
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}
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if (node < 0) {
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node = node1;
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charger->chip_id = BQ25703_ID;
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} else {
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charger->chip_id = BQ25700_ID;
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}
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charger->ichg = fdtdec_get_int(blob, node, "ti,charge-current", 0);
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return 0;
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}
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static int bq25700_probe(struct udevice *dev)
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{
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struct bq25700 *charger = dev_get_priv(dev);
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int ret;
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ret = uclass_get_device(UCLASS_PD, 0, &charger->pd);
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if (ret) {
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if (ret == -ENODEV)
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printf("Can't find PMIC\n");
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else
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printf("Get UCLASS PMIC failed: %d\n", ret);
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charger->pd = NULL;
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}
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if (charger->chip_id == BQ25700_ID)
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bq25700_charger_current_init(charger);
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else
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bq25703_charger_current_init(charger);
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return 0;
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}
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static const struct udevice_id charger_ids[] = {
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{ .compatible = "ti,bq25700" },
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{ .compatible = "ti,bq25703" },
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{ },
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};
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static struct dm_fuel_gauge_ops charger_ops = {
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.get_chrg_online = bq257xx_charger_status,
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.capability = bq25700_charger_capability,
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};
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U_BOOT_DRIVER(bq25700_charger) = {
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.name = "bq25700_charger",
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.id = UCLASS_FG,
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.probe = bq25700_probe,
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.of_match = charger_ids,
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.ops = &charger_ops,
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.ofdata_to_platdata = bq25700_ofdata_to_platdata,
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.priv_auto_alloc_size = sizeof(struct bq25700),
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};
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