Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Dan Murphy | 5671 | 98.97% | 3 | 37.50% |
Ricardo Rivera-Matos | 45 | 0.79% | 2 | 25.00% |
Uwe Kleine-König | 9 | 0.16% | 1 | 12.50% |
Linus Walleij | 3 | 0.05% | 1 | 12.50% |
xinjian | 2 | 0.03% | 1 | 12.50% |
Total | 5730 | 8 |
// SPDX-License-Identifier: GPL-2.0 // BQ25980 Battery Charger Driver // Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/ #include <linux/err.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/gpio/consumer.h> #include <linux/power_supply.h> #include <linux/regmap.h> #include <linux/types.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/moduleparam.h> #include <linux/slab.h> #include "bq25980_charger.h" struct bq25980_state { bool dischg; bool ovp; bool ocp; bool wdt; bool tflt; bool online; bool ce; bool hiz; bool bypass; u32 vbat_adc; u32 vsys_adc; u32 ibat_adc; }; enum bq25980_id { BQ25980, BQ25975, BQ25960, }; struct bq25980_chip_info { int model_id; const struct regmap_config *regmap_config; int busocp_def; int busocp_sc_max; int busocp_byp_max; int busocp_sc_min; int busocp_byp_min; int busovp_sc_def; int busovp_byp_def; int busovp_sc_step; int busovp_sc_offset; int busovp_byp_step; int busovp_byp_offset; int busovp_sc_min; int busovp_sc_max; int busovp_byp_min; int busovp_byp_max; int batovp_def; int batovp_max; int batovp_min; int batovp_step; int batovp_offset; int batocp_def; int batocp_max; }; struct bq25980_init_data { u32 ichg; u32 bypass_ilim; u32 sc_ilim; u32 vreg; u32 iterm; u32 iprechg; u32 bypass_vlim; u32 sc_vlim; u32 ichg_max; u32 vreg_max; }; struct bq25980_device { struct i2c_client *client; struct device *dev; struct power_supply *charger; struct power_supply *battery; struct mutex lock; struct regmap *regmap; char model_name[I2C_NAME_SIZE]; struct bq25980_init_data init_data; const struct bq25980_chip_info *chip_info; struct bq25980_state state; int watchdog_timer; }; static struct reg_default bq25980_reg_defs[] = { {BQ25980_BATOVP, 0x5A}, {BQ25980_BATOVP_ALM, 0x46}, {BQ25980_BATOCP, 0x51}, {BQ25980_BATOCP_ALM, 0x50}, {BQ25980_BATUCP_ALM, 0x28}, {BQ25980_CHRGR_CTRL_1, 0x0}, {BQ25980_BUSOVP, 0x26}, {BQ25980_BUSOVP_ALM, 0x22}, {BQ25980_BUSOCP, 0xD}, {BQ25980_BUSOCP_ALM, 0xC}, {BQ25980_TEMP_CONTROL, 0x30}, {BQ25980_TDIE_ALM, 0xC8}, {BQ25980_TSBUS_FLT, 0x15}, {BQ25980_TSBAT_FLG, 0x15}, {BQ25980_VAC_CONTROL, 0x0}, {BQ25980_CHRGR_CTRL_2, 0x0}, {BQ25980_CHRGR_CTRL_3, 0x20}, {BQ25980_CHRGR_CTRL_4, 0x1D}, {BQ25980_CHRGR_CTRL_5, 0x18}, {BQ25980_STAT1, 0x0}, {BQ25980_STAT2, 0x0}, {BQ25980_STAT3, 0x0}, {BQ25980_STAT4, 0x0}, {BQ25980_STAT5, 0x0}, {BQ25980_FLAG1, 0x0}, {BQ25980_FLAG2, 0x0}, {BQ25980_FLAG3, 0x0}, {BQ25980_FLAG4, 0x0}, {BQ25980_FLAG5, 0x0}, {BQ25980_MASK1, 0x0}, {BQ25980_MASK2, 0x0}, {BQ25980_MASK3, 0x0}, {BQ25980_MASK4, 0x0}, {BQ25980_MASK5, 0x0}, {BQ25980_DEVICE_INFO, 0x8}, {BQ25980_ADC_CONTROL1, 0x0}, {BQ25980_ADC_CONTROL2, 0x0}, {BQ25980_IBUS_ADC_LSB, 0x0}, {BQ25980_IBUS_ADC_MSB, 0x0}, {BQ25980_VBUS_ADC_LSB, 0x0}, {BQ25980_VBUS_ADC_MSB, 0x0}, {BQ25980_VAC1_ADC_LSB, 0x0}, {BQ25980_VAC2_ADC_LSB, 0x0}, {BQ25980_VOUT_ADC_LSB, 0x0}, {BQ25980_VBAT_ADC_LSB, 0x0}, {BQ25980_IBAT_ADC_MSB, 0x0}, {BQ25980_IBAT_ADC_LSB, 0x0}, {BQ25980_TSBUS_ADC_LSB, 0x0}, {BQ25980_TSBAT_ADC_LSB, 0x0}, {BQ25980_TDIE_ADC_LSB, 0x0}, {BQ25980_DEGLITCH_TIME, 0x0}, {BQ25980_CHRGR_CTRL_6, 0x0}, }; static struct reg_default bq25975_reg_defs[] = { {BQ25980_BATOVP, 0x5A}, {BQ25980_BATOVP_ALM, 0x46}, {BQ25980_BATOCP, 0x51}, {BQ25980_BATOCP_ALM, 0x50}, {BQ25980_BATUCP_ALM, 0x28}, {BQ25980_CHRGR_CTRL_1, 0x0}, {BQ25980_BUSOVP, 0x26}, {BQ25980_BUSOVP_ALM, 0x22}, {BQ25980_BUSOCP, 0xD}, {BQ25980_BUSOCP_ALM, 0xC}, {BQ25980_TEMP_CONTROL, 0x30}, {BQ25980_TDIE_ALM, 0xC8}, {BQ25980_TSBUS_FLT, 0x15}, {BQ25980_TSBAT_FLG, 0x15}, {BQ25980_VAC_CONTROL, 0x0}, {BQ25980_CHRGR_CTRL_2, 0x0}, {BQ25980_CHRGR_CTRL_3, 0x20}, {BQ25980_CHRGR_CTRL_4, 0x1D}, {BQ25980_CHRGR_CTRL_5, 0x18}, {BQ25980_STAT1, 0x0}, {BQ25980_STAT2, 0x0}, {BQ25980_STAT3, 0x0}, {BQ25980_STAT4, 0x0}, {BQ25980_STAT5, 0x0}, {BQ25980_FLAG1, 0x0}, {BQ25980_FLAG2, 0x0}, {BQ25980_FLAG3, 0x0}, {BQ25980_FLAG4, 0x0}, {BQ25980_FLAG5, 0x0}, {BQ25980_MASK1, 0x0}, {BQ25980_MASK2, 0x0}, {BQ25980_MASK3, 0x0}, {BQ25980_MASK4, 0x0}, {BQ25980_MASK5, 0x0}, {BQ25980_DEVICE_INFO, 0x8}, {BQ25980_ADC_CONTROL1, 0x0}, {BQ25980_ADC_CONTROL2, 0x0}, {BQ25980_IBUS_ADC_LSB, 0x0}, {BQ25980_IBUS_ADC_MSB, 0x0}, {BQ25980_VBUS_ADC_LSB, 0x0}, {BQ25980_VBUS_ADC_MSB, 0x0}, {BQ25980_VAC1_ADC_LSB, 0x0}, {BQ25980_VAC2_ADC_LSB, 0x0}, {BQ25980_VOUT_ADC_LSB, 0x0}, {BQ25980_VBAT_ADC_LSB, 0x0}, {BQ25980_IBAT_ADC_MSB, 0x0}, {BQ25980_IBAT_ADC_LSB, 0x0}, {BQ25980_TSBUS_ADC_LSB, 0x0}, {BQ25980_TSBAT_ADC_LSB, 0x0}, {BQ25980_TDIE_ADC_LSB, 0x0}, {BQ25980_DEGLITCH_TIME, 0x0}, {BQ25980_CHRGR_CTRL_6, 0x0}, }; static struct reg_default bq25960_reg_defs[] = { {BQ25980_BATOVP, 0x5A}, {BQ25980_BATOVP_ALM, 0x46}, {BQ25980_BATOCP, 0x51}, {BQ25980_BATOCP_ALM, 0x50}, {BQ25980_BATUCP_ALM, 0x28}, {BQ25980_CHRGR_CTRL_1, 0x0}, {BQ25980_BUSOVP, 0x26}, {BQ25980_BUSOVP_ALM, 0x22}, {BQ25980_BUSOCP, 0xD}, {BQ25980_BUSOCP_ALM, 0xC}, {BQ25980_TEMP_CONTROL, 0x30}, {BQ25980_TDIE_ALM, 0xC8}, {BQ25980_TSBUS_FLT, 0x15}, {BQ25980_TSBAT_FLG, 0x15}, {BQ25980_VAC_CONTROL, 0x0}, {BQ25980_CHRGR_CTRL_2, 0x0}, {BQ25980_CHRGR_CTRL_3, 0x20}, {BQ25980_CHRGR_CTRL_4, 0x1D}, {BQ25980_CHRGR_CTRL_5, 0x18}, {BQ25980_STAT1, 0x0}, {BQ25980_STAT2, 0x0}, {BQ25980_STAT3, 0x0}, {BQ25980_STAT4, 0x0}, {BQ25980_STAT5, 0x0}, {BQ25980_FLAG1, 0x0}, {BQ25980_FLAG2, 0x0}, {BQ25980_FLAG3, 0x0}, {BQ25980_FLAG4, 0x0}, {BQ25980_FLAG5, 0x0}, {BQ25980_MASK1, 0x0}, {BQ25980_MASK2, 0x0}, {BQ25980_MASK3, 0x0}, {BQ25980_MASK4, 0x0}, {BQ25980_MASK5, 0x0}, {BQ25980_DEVICE_INFO, 0x8}, {BQ25980_ADC_CONTROL1, 0x0}, {BQ25980_ADC_CONTROL2, 0x0}, {BQ25980_IBUS_ADC_LSB, 0x0}, {BQ25980_IBUS_ADC_MSB, 0x0}, {BQ25980_VBUS_ADC_LSB, 0x0}, {BQ25980_VBUS_ADC_MSB, 0x0}, {BQ25980_VAC1_ADC_LSB, 0x0}, {BQ25980_VAC2_ADC_LSB, 0x0}, {BQ25980_VOUT_ADC_LSB, 0x0}, {BQ25980_VBAT_ADC_LSB, 0x0}, {BQ25980_IBAT_ADC_MSB, 0x0}, {BQ25980_IBAT_ADC_LSB, 0x0}, {BQ25980_TSBUS_ADC_LSB, 0x0}, {BQ25980_TSBAT_ADC_LSB, 0x0}, {BQ25980_TDIE_ADC_LSB, 0x0}, {BQ25980_DEGLITCH_TIME, 0x0}, {BQ25980_CHRGR_CTRL_6, 0x0}, }; static int bq25980_watchdog_time[BQ25980_NUM_WD_VAL] = {5000, 10000, 50000, 300000}; static int bq25980_get_input_curr_lim(struct bq25980_device *bq) { unsigned int busocp_reg_code; int ret; ret = regmap_read(bq->regmap, BQ25980_BUSOCP, &busocp_reg_code); if (ret) return ret; return (busocp_reg_code * BQ25980_BUSOCP_STEP_uA) + BQ25980_BUSOCP_OFFSET_uA; } static int bq25980_set_hiz(struct bq25980_device *bq, int setting) { return regmap_update_bits(bq->regmap, BQ25980_CHRGR_CTRL_2, BQ25980_EN_HIZ, setting); } static int bq25980_set_input_curr_lim(struct bq25980_device *bq, int busocp) { unsigned int busocp_reg_code; int ret; if (!busocp) return bq25980_set_hiz(bq, BQ25980_ENABLE_HIZ); bq25980_set_hiz(bq, BQ25980_DISABLE_HIZ); if (busocp < BQ25980_BUSOCP_MIN_uA) busocp = BQ25980_BUSOCP_MIN_uA; if (bq->state.bypass) busocp = min(busocp, bq->chip_info->busocp_sc_max); else busocp = min(busocp, bq->chip_info->busocp_byp_max); busocp_reg_code = (busocp - BQ25980_BUSOCP_OFFSET_uA) / BQ25980_BUSOCP_STEP_uA; ret = regmap_write(bq->regmap, BQ25980_BUSOCP, busocp_reg_code); if (ret) return ret; return regmap_write(bq->regmap, BQ25980_BUSOCP_ALM, busocp_reg_code); } static int bq25980_get_input_volt_lim(struct bq25980_device *bq) { unsigned int busovp_reg_code; unsigned int busovp_offset; unsigned int busovp_step; int ret; if (bq->state.bypass) { busovp_step = bq->chip_info->busovp_byp_step; busovp_offset = bq->chip_info->busovp_byp_offset; } else { busovp_step = bq->chip_info->busovp_sc_step; busovp_offset = bq->chip_info->busovp_sc_offset; } ret = regmap_read(bq->regmap, BQ25980_BUSOVP, &busovp_reg_code); if (ret) return ret; return (busovp_reg_code * busovp_step) + busovp_offset; } static int bq25980_set_input_volt_lim(struct bq25980_device *bq, int busovp) { unsigned int busovp_reg_code; unsigned int busovp_step; unsigned int busovp_offset; int ret; if (bq->state.bypass) { busovp_step = bq->chip_info->busovp_byp_step; busovp_offset = bq->chip_info->busovp_byp_offset; if (busovp > bq->chip_info->busovp_byp_max) busovp = bq->chip_info->busovp_byp_max; else if (busovp < bq->chip_info->busovp_byp_min) busovp = bq->chip_info->busovp_byp_min; } else { busovp_step = bq->chip_info->busovp_sc_step; busovp_offset = bq->chip_info->busovp_sc_offset; if (busovp > bq->chip_info->busovp_sc_max) busovp = bq->chip_info->busovp_sc_max; else if (busovp < bq->chip_info->busovp_sc_min) busovp = bq->chip_info->busovp_sc_min; } busovp_reg_code = (busovp - busovp_offset) / busovp_step; ret = regmap_write(bq->regmap, BQ25980_BUSOVP, busovp_reg_code); if (ret) return ret; return regmap_write(bq->regmap, BQ25980_BUSOVP_ALM, busovp_reg_code); } static int bq25980_get_const_charge_curr(struct bq25980_device *bq) { unsigned int batocp_reg_code; int ret; ret = regmap_read(bq->regmap, BQ25980_BATOCP, &batocp_reg_code); if (ret) return ret; return (batocp_reg_code & BQ25980_BATOCP_MASK) * BQ25980_BATOCP_STEP_uA; } static int bq25980_set_const_charge_curr(struct bq25980_device *bq, int batocp) { unsigned int batocp_reg_code; int ret; batocp = max(batocp, BQ25980_BATOCP_MIN_uA); batocp = min(batocp, bq->chip_info->batocp_max); batocp_reg_code = batocp / BQ25980_BATOCP_STEP_uA; ret = regmap_update_bits(bq->regmap, BQ25980_BATOCP, BQ25980_BATOCP_MASK, batocp_reg_code); if (ret) return ret; return regmap_update_bits(bq->regmap, BQ25980_BATOCP_ALM, BQ25980_BATOCP_MASK, batocp_reg_code); } static int bq25980_get_const_charge_volt(struct bq25980_device *bq) { unsigned int batovp_reg_code; int ret; ret = regmap_read(bq->regmap, BQ25980_BATOVP, &batovp_reg_code); if (ret) return ret; return ((batovp_reg_code * bq->chip_info->batovp_step) + bq->chip_info->batovp_offset); } static int bq25980_set_const_charge_volt(struct bq25980_device *bq, int batovp) { unsigned int batovp_reg_code; int ret; if (batovp < bq->chip_info->batovp_min) batovp = bq->chip_info->batovp_min; if (batovp > bq->chip_info->batovp_max) batovp = bq->chip_info->batovp_max; batovp_reg_code = (batovp - bq->chip_info->batovp_offset) / bq->chip_info->batovp_step; ret = regmap_write(bq->regmap, BQ25980_BATOVP, batovp_reg_code); if (ret) return ret; return regmap_write(bq->regmap, BQ25980_BATOVP_ALM, batovp_reg_code); } static int bq25980_set_bypass(struct bq25980_device *bq, bool en_bypass) { int ret; if (en_bypass) ret = regmap_update_bits(bq->regmap, BQ25980_CHRGR_CTRL_2, BQ25980_EN_BYPASS, BQ25980_EN_BYPASS); else ret = regmap_update_bits(bq->regmap, BQ25980_CHRGR_CTRL_2, BQ25980_EN_BYPASS, en_bypass); if (ret) return ret; bq->state.bypass = en_bypass; return bq->state.bypass; } static int bq25980_set_chg_en(struct bq25980_device *bq, bool en_chg) { int ret; if (en_chg) ret = regmap_update_bits(bq->regmap, BQ25980_CHRGR_CTRL_2, BQ25980_CHG_EN, BQ25980_CHG_EN); else ret = regmap_update_bits(bq->regmap, BQ25980_CHRGR_CTRL_2, BQ25980_CHG_EN, en_chg); if (ret) return ret; bq->state.ce = en_chg; return 0; } static int bq25980_get_adc_ibus(struct bq25980_device *bq) { int ibus_adc_lsb, ibus_adc_msb; u16 ibus_adc; int ret; ret = regmap_read(bq->regmap, BQ25980_IBUS_ADC_MSB, &ibus_adc_msb); if (ret) return ret; ret = regmap_read(bq->regmap, BQ25980_IBUS_ADC_LSB, &ibus_adc_lsb); if (ret) return ret; ibus_adc = (ibus_adc_msb << 8) | ibus_adc_lsb; if (ibus_adc_msb & BQ25980_ADC_POLARITY_BIT) return ((ibus_adc ^ 0xffff) + 1) * BQ25980_ADC_CURR_STEP_uA; return ibus_adc * BQ25980_ADC_CURR_STEP_uA; } static int bq25980_get_adc_vbus(struct bq25980_device *bq) { int vbus_adc_lsb, vbus_adc_msb; u16 vbus_adc; int ret; ret = regmap_read(bq->regmap, BQ25980_VBUS_ADC_MSB, &vbus_adc_msb); if (ret) return ret; ret = regmap_read(bq->regmap, BQ25980_VBUS_ADC_LSB, &vbus_adc_lsb); if (ret) return ret; vbus_adc = (vbus_adc_msb << 8) | vbus_adc_lsb; return vbus_adc * BQ25980_ADC_VOLT_STEP_uV; } static int bq25980_get_ibat_adc(struct bq25980_device *bq) { int ret; int ibat_adc_lsb, ibat_adc_msb; int ibat_adc; ret = regmap_read(bq->regmap, BQ25980_IBAT_ADC_MSB, &ibat_adc_msb); if (ret) return ret; ret = regmap_read(bq->regmap, BQ25980_IBAT_ADC_LSB, &ibat_adc_lsb); if (ret) return ret; ibat_adc = (ibat_adc_msb << 8) | ibat_adc_lsb; if (ibat_adc_msb & BQ25980_ADC_POLARITY_BIT) return ((ibat_adc ^ 0xffff) + 1) * BQ25980_ADC_CURR_STEP_uA; return ibat_adc * BQ25980_ADC_CURR_STEP_uA; } static int bq25980_get_adc_vbat(struct bq25980_device *bq) { int vsys_adc_lsb, vsys_adc_msb; u16 vsys_adc; int ret; ret = regmap_read(bq->regmap, BQ25980_VBAT_ADC_MSB, &vsys_adc_msb); if (ret) return ret; ret = regmap_read(bq->regmap, BQ25980_VBAT_ADC_LSB, &vsys_adc_lsb); if (ret) return ret; vsys_adc = (vsys_adc_msb << 8) | vsys_adc_lsb; return vsys_adc * BQ25980_ADC_VOLT_STEP_uV; } static int bq25980_get_state(struct bq25980_device *bq, struct bq25980_state *state) { unsigned int chg_ctrl_2; unsigned int stat1; unsigned int stat2; unsigned int stat3; unsigned int stat4; unsigned int ibat_adc_msb; int ret; ret = regmap_read(bq->regmap, BQ25980_STAT1, &stat1); if (ret) return ret; ret = regmap_read(bq->regmap, BQ25980_STAT2, &stat2); if (ret) return ret; ret = regmap_read(bq->regmap, BQ25980_STAT3, &stat3); if (ret) return ret; ret = regmap_read(bq->regmap, BQ25980_STAT4, &stat4); if (ret) return ret; ret = regmap_read(bq->regmap, BQ25980_CHRGR_CTRL_2, &chg_ctrl_2); if (ret) return ret; ret = regmap_read(bq->regmap, BQ25980_IBAT_ADC_MSB, &ibat_adc_msb); if (ret) return ret; state->dischg = ibat_adc_msb & BQ25980_ADC_POLARITY_BIT; state->ovp = (stat1 & BQ25980_STAT1_OVP_MASK) | (stat3 & BQ25980_STAT3_OVP_MASK); state->ocp = (stat1 & BQ25980_STAT1_OCP_MASK) | (stat2 & BQ25980_STAT2_OCP_MASK); state->tflt = stat4 & BQ25980_STAT4_TFLT_MASK; state->wdt = stat4 & BQ25980_WD_STAT; state->online = stat3 & BQ25980_PRESENT_MASK; state->ce = chg_ctrl_2 & BQ25980_CHG_EN; state->hiz = chg_ctrl_2 & BQ25980_EN_HIZ; state->bypass = chg_ctrl_2 & BQ25980_EN_BYPASS; return 0; } static int bq25980_get_battery_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct bq25980_device *bq = power_supply_get_drvdata(psy); int ret = 0; switch (psp) { case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: val->intval = bq->init_data.ichg_max; break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: val->intval = bq->init_data.vreg_max; break; case POWER_SUPPLY_PROP_CURRENT_NOW: ret = bq25980_get_ibat_adc(bq); val->intval = ret; break; case POWER_SUPPLY_PROP_VOLTAGE_NOW: ret = bq25980_get_adc_vbat(bq); if (ret < 0) return ret; val->intval = ret; break; default: return -EINVAL; } return ret; } static int bq25980_set_charger_property(struct power_supply *psy, enum power_supply_property prop, const union power_supply_propval *val) { struct bq25980_device *bq = power_supply_get_drvdata(psy); int ret = -EINVAL; switch (prop) { case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: ret = bq25980_set_input_curr_lim(bq, val->intval); if (ret) return ret; break; case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: ret = bq25980_set_input_volt_lim(bq, val->intval); if (ret) return ret; break; case POWER_SUPPLY_PROP_CHARGE_TYPE: ret = bq25980_set_bypass(bq, val->intval); if (ret) return ret; break; case POWER_SUPPLY_PROP_STATUS: ret = bq25980_set_chg_en(bq, val->intval); if (ret) return ret; break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: ret = bq25980_set_const_charge_curr(bq, val->intval); if (ret) return ret; break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: ret = bq25980_set_const_charge_volt(bq, val->intval); if (ret) return ret; break; default: return -EINVAL; } return ret; } static int bq25980_get_charger_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct bq25980_device *bq = power_supply_get_drvdata(psy); struct bq25980_state state; int ret = 0; mutex_lock(&bq->lock); ret = bq25980_get_state(bq, &state); mutex_unlock(&bq->lock); if (ret) return ret; switch (psp) { case POWER_SUPPLY_PROP_MANUFACTURER: val->strval = BQ25980_MANUFACTURER; break; case POWER_SUPPLY_PROP_MODEL_NAME: val->strval = bq->model_name; break; case POWER_SUPPLY_PROP_ONLINE: val->intval = state.online; break; case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: ret = bq25980_get_input_volt_lim(bq); if (ret < 0) return ret; val->intval = ret; break; case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: ret = bq25980_get_input_curr_lim(bq); if (ret < 0) return ret; val->intval = ret; break; case POWER_SUPPLY_PROP_HEALTH: val->intval = POWER_SUPPLY_HEALTH_GOOD; if (state.tflt) val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; else if (state.ovp) val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; else if (state.ocp) val->intval = POWER_SUPPLY_HEALTH_OVERCURRENT; else if (state.wdt) val->intval = POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE; break; case POWER_SUPPLY_PROP_STATUS: val->intval = POWER_SUPPLY_STATUS_UNKNOWN; if ((state.ce) && (!state.hiz)) val->intval = POWER_SUPPLY_STATUS_CHARGING; else if (state.dischg) val->intval = POWER_SUPPLY_STATUS_DISCHARGING; else if (!state.ce) val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; break; case POWER_SUPPLY_PROP_CHARGE_TYPE: val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN; if (!state.ce) val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE; else if (state.bypass) val->intval = POWER_SUPPLY_CHARGE_TYPE_BYPASS; else if (!state.bypass) val->intval = POWER_SUPPLY_CHARGE_TYPE_STANDARD; break; case POWER_SUPPLY_PROP_CURRENT_NOW: ret = bq25980_get_adc_ibus(bq); if (ret < 0) return ret; val->intval = ret; break; case POWER_SUPPLY_PROP_VOLTAGE_NOW: ret = bq25980_get_adc_vbus(bq); if (ret < 0) return ret; val->intval = ret; break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: ret = bq25980_get_const_charge_curr(bq); if (ret < 0) return ret; val->intval = ret; break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: ret = bq25980_get_const_charge_volt(bq); if (ret < 0) return ret; val->intval = ret; break; default: return -EINVAL; } return ret; } static bool bq25980_state_changed(struct bq25980_device *bq, struct bq25980_state *new_state) { struct bq25980_state old_state; mutex_lock(&bq->lock); old_state = bq->state; mutex_unlock(&bq->lock); return (old_state.dischg != new_state->dischg || old_state.ovp != new_state->ovp || old_state.ocp != new_state->ocp || old_state.online != new_state->online || old_state.wdt != new_state->wdt || old_state.tflt != new_state->tflt || old_state.ce != new_state->ce || old_state.hiz != new_state->hiz || old_state.bypass != new_state->bypass); } static irqreturn_t bq25980_irq_handler_thread(int irq, void *private) { struct bq25980_device *bq = private; struct bq25980_state state; int ret; ret = bq25980_get_state(bq, &state); if (ret < 0) goto irq_out; if (!bq25980_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 bq25980_power_supply_props[] = { POWER_SUPPLY_PROP_MANUFACTURER, POWER_SUPPLY_PROP_MODEL_NAME, POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT, POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, POWER_SUPPLY_PROP_CHARGE_TYPE, POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, POWER_SUPPLY_PROP_CURRENT_NOW, POWER_SUPPLY_PROP_VOLTAGE_NOW, }; static enum power_supply_property bq25980_battery_props[] = { POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, POWER_SUPPLY_PROP_CURRENT_NOW, POWER_SUPPLY_PROP_VOLTAGE_NOW, }; static char *bq25980_charger_supplied_to[] = { "main-battery", }; static int bq25980_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_CHARGE_TYPE: case POWER_SUPPLY_PROP_STATUS: case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: return true; default: return false; } } static const struct power_supply_desc bq25980_power_supply_desc = { .name = "bq25980-charger", .type = POWER_SUPPLY_TYPE_MAINS, .properties = bq25980_power_supply_props, .num_properties = ARRAY_SIZE(bq25980_power_supply_props), .get_property = bq25980_get_charger_property, .set_property = bq25980_set_charger_property, .property_is_writeable = bq25980_property_is_writeable, }; static struct power_supply_desc bq25980_battery_desc = { .name = "bq25980-battery", .type = POWER_SUPPLY_TYPE_BATTERY, .get_property = bq25980_get_battery_property, .properties = bq25980_battery_props, .num_properties = ARRAY_SIZE(bq25980_battery_props), .property_is_writeable = bq25980_property_is_writeable, }; static bool bq25980_is_volatile_reg(struct device *dev, unsigned int reg) { switch (reg) { case BQ25980_CHRGR_CTRL_2: case BQ25980_STAT1...BQ25980_FLAG5: case BQ25980_ADC_CONTROL1...BQ25980_TDIE_ADC_LSB: return true; default: return false; } } static const struct regmap_config bq25980_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = BQ25980_CHRGR_CTRL_6, .reg_defaults = bq25980_reg_defs, .num_reg_defaults = ARRAY_SIZE(bq25980_reg_defs), .cache_type = REGCACHE_RBTREE, .volatile_reg = bq25980_is_volatile_reg, }; static const struct regmap_config bq25975_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = BQ25980_CHRGR_CTRL_6, .reg_defaults = bq25975_reg_defs, .num_reg_defaults = ARRAY_SIZE(bq25975_reg_defs), .cache_type = REGCACHE_RBTREE, .volatile_reg = bq25980_is_volatile_reg, }; static const struct regmap_config bq25960_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = BQ25980_CHRGR_CTRL_6, .reg_defaults = bq25960_reg_defs, .num_reg_defaults = ARRAY_SIZE(bq25960_reg_defs), .cache_type = REGCACHE_RBTREE, .volatile_reg = bq25980_is_volatile_reg, }; static const struct bq25980_chip_info bq25980_chip_info_tbl[] = { [BQ25980] = { .model_id = BQ25980, .regmap_config = &bq25980_regmap_config, .busocp_def = BQ25980_BUSOCP_DFLT_uA, .busocp_sc_min = BQ25960_BUSOCP_SC_MAX_uA, .busocp_sc_max = BQ25980_BUSOCP_SC_MAX_uA, .busocp_byp_max = BQ25980_BUSOCP_BYP_MAX_uA, .busocp_byp_min = BQ25980_BUSOCP_MIN_uA, .busovp_sc_def = BQ25980_BUSOVP_DFLT_uV, .busovp_byp_def = BQ25980_BUSOVP_BYPASS_DFLT_uV, .busovp_sc_step = BQ25980_BUSOVP_SC_STEP_uV, .busovp_sc_offset = BQ25980_BUSOVP_SC_OFFSET_uV, .busovp_byp_step = BQ25980_BUSOVP_BYP_STEP_uV, .busovp_byp_offset = BQ25980_BUSOVP_BYP_OFFSET_uV, .busovp_sc_min = BQ25980_BUSOVP_SC_MIN_uV, .busovp_sc_max = BQ25980_BUSOVP_SC_MAX_uV, .busovp_byp_min = BQ25980_BUSOVP_BYP_MIN_uV, .busovp_byp_max = BQ25980_BUSOVP_BYP_MAX_uV, .batovp_def = BQ25980_BATOVP_DFLT_uV, .batovp_max = BQ25980_BATOVP_MAX_uV, .batovp_min = BQ25980_BATOVP_MIN_uV, .batovp_step = BQ25980_BATOVP_STEP_uV, .batovp_offset = BQ25980_BATOVP_OFFSET_uV, .batocp_def = BQ25980_BATOCP_DFLT_uA, .batocp_max = BQ25980_BATOCP_MAX_uA, }, [BQ25975] = { .model_id = BQ25975, .regmap_config = &bq25975_regmap_config, .busocp_def = BQ25975_BUSOCP_DFLT_uA, .busocp_sc_min = BQ25975_BUSOCP_SC_MAX_uA, .busocp_sc_max = BQ25975_BUSOCP_SC_MAX_uA, .busocp_byp_min = BQ25980_BUSOCP_MIN_uA, .busocp_byp_max = BQ25975_BUSOCP_BYP_MAX_uA, .busovp_sc_def = BQ25975_BUSOVP_DFLT_uV, .busovp_byp_def = BQ25975_BUSOVP_BYPASS_DFLT_uV, .busovp_sc_step = BQ25975_BUSOVP_SC_STEP_uV, .busovp_sc_offset = BQ25975_BUSOVP_SC_OFFSET_uV, .busovp_byp_step = BQ25975_BUSOVP_BYP_STEP_uV, .busovp_byp_offset = BQ25975_BUSOVP_BYP_OFFSET_uV, .busovp_sc_min = BQ25975_BUSOVP_SC_MIN_uV, .busovp_sc_max = BQ25975_BUSOVP_SC_MAX_uV, .busovp_byp_min = BQ25975_BUSOVP_BYP_MIN_uV, .busovp_byp_max = BQ25975_BUSOVP_BYP_MAX_uV, .batovp_def = BQ25975_BATOVP_DFLT_uV, .batovp_max = BQ25975_BATOVP_MAX_uV, .batovp_min = BQ25975_BATOVP_MIN_uV, .batovp_step = BQ25975_BATOVP_STEP_uV, .batovp_offset = BQ25975_BATOVP_OFFSET_uV, .batocp_def = BQ25980_BATOCP_DFLT_uA, .batocp_max = BQ25980_BATOCP_MAX_uA, }, [BQ25960] = { .model_id = BQ25960, .regmap_config = &bq25960_regmap_config, .busocp_def = BQ25960_BUSOCP_DFLT_uA, .busocp_sc_min = BQ25960_BUSOCP_SC_MAX_uA, .busocp_sc_max = BQ25960_BUSOCP_SC_MAX_uA, .busocp_byp_min = BQ25960_BUSOCP_SC_MAX_uA, .busocp_byp_max = BQ25960_BUSOCP_BYP_MAX_uA, .busovp_sc_def = BQ25975_BUSOVP_DFLT_uV, .busovp_byp_def = BQ25975_BUSOVP_BYPASS_DFLT_uV, .busovp_sc_step = BQ25960_BUSOVP_SC_STEP_uV, .busovp_sc_offset = BQ25960_BUSOVP_SC_OFFSET_uV, .busovp_byp_step = BQ25960_BUSOVP_BYP_STEP_uV, .busovp_byp_offset = BQ25960_BUSOVP_BYP_OFFSET_uV, .busovp_sc_min = BQ25960_BUSOVP_SC_MIN_uV, .busovp_sc_max = BQ25960_BUSOVP_SC_MAX_uV, .busovp_byp_min = BQ25960_BUSOVP_BYP_MIN_uV, .busovp_byp_max = BQ25960_BUSOVP_BYP_MAX_uV, .batovp_def = BQ25960_BATOVP_DFLT_uV, .batovp_max = BQ25960_BATOVP_MAX_uV, .batovp_min = BQ25960_BATOVP_MIN_uV, .batovp_step = BQ25960_BATOVP_STEP_uV, .batovp_offset = BQ25960_BATOVP_OFFSET_uV, .batocp_def = BQ25960_BATOCP_DFLT_uA, .batocp_max = BQ25960_BATOCP_MAX_uA, }, }; static int bq25980_power_supply_init(struct bq25980_device *bq, struct device *dev) { struct power_supply_config psy_cfg = { .drv_data = bq, .of_node = dev->of_node, }; psy_cfg.supplied_to = bq25980_charger_supplied_to; psy_cfg.num_supplicants = ARRAY_SIZE(bq25980_charger_supplied_to); bq->charger = devm_power_supply_register(bq->dev, &bq25980_power_supply_desc, &psy_cfg); if (IS_ERR(bq->charger)) return -EINVAL; bq->battery = devm_power_supply_register(bq->dev, &bq25980_battery_desc, &psy_cfg); if (IS_ERR(bq->battery)) return -EINVAL; return 0; } static int bq25980_hw_init(struct bq25980_device *bq) { struct power_supply_battery_info *bat_info; int wd_reg_val = BQ25980_WATCHDOG_DIS; int wd_max_val = BQ25980_NUM_WD_VAL - 1; int ret = 0; int curr_val; int volt_val; int i; if (bq->watchdog_timer) { if (bq->watchdog_timer >= bq25980_watchdog_time[wd_max_val]) wd_reg_val = wd_max_val; else { for (i = 0; i < wd_max_val; i++) { if (bq->watchdog_timer > bq25980_watchdog_time[i] && bq->watchdog_timer < bq25980_watchdog_time[i + 1]) { wd_reg_val = i; break; } } } } ret = regmap_update_bits(bq->regmap, BQ25980_CHRGR_CTRL_3, BQ25980_WATCHDOG_MASK, wd_reg_val); if (ret) return ret; ret = power_supply_get_battery_info(bq->charger, &bat_info); if (ret) { dev_warn(bq->dev, "battery info missing\n"); return -EINVAL; } bq->init_data.ichg_max = bat_info->constant_charge_current_max_ua; bq->init_data.vreg_max = bat_info->constant_charge_voltage_max_uv; if (bq->state.bypass) { ret = regmap_update_bits(bq->regmap, BQ25980_CHRGR_CTRL_2, BQ25980_EN_BYPASS, BQ25980_EN_BYPASS); if (ret) return ret; curr_val = bq->init_data.bypass_ilim; volt_val = bq->init_data.bypass_vlim; } else { curr_val = bq->init_data.sc_ilim; volt_val = bq->init_data.sc_vlim; } ret = bq25980_set_input_curr_lim(bq, curr_val); if (ret) return ret; ret = bq25980_set_input_volt_lim(bq, volt_val); if (ret) return ret; return regmap_update_bits(bq->regmap, BQ25980_ADC_CONTROL1, BQ25980_ADC_EN, BQ25980_ADC_EN); } static int bq25980_parse_dt(struct bq25980_device *bq) { int ret; ret = device_property_read_u32(bq->dev, "ti,watchdog-timeout-ms", &bq->watchdog_timer); if (ret) bq->watchdog_timer = BQ25980_WATCHDOG_MIN; if (bq->watchdog_timer > BQ25980_WATCHDOG_MAX || bq->watchdog_timer < BQ25980_WATCHDOG_MIN) return -EINVAL; ret = device_property_read_u32(bq->dev, "ti,sc-ovp-limit-microvolt", &bq->init_data.sc_vlim); if (ret) bq->init_data.sc_vlim = bq->chip_info->busovp_sc_def; if (bq->init_data.sc_vlim > bq->chip_info->busovp_sc_max || bq->init_data.sc_vlim < bq->chip_info->busovp_sc_min) { dev_err(bq->dev, "SC ovp limit is out of range\n"); return -EINVAL; } ret = device_property_read_u32(bq->dev, "ti,sc-ocp-limit-microamp", &bq->init_data.sc_ilim); if (ret) bq->init_data.sc_ilim = bq->chip_info->busocp_def; if (bq->init_data.sc_ilim > bq->chip_info->busocp_sc_max || bq->init_data.sc_ilim < bq->chip_info->busocp_sc_min) { dev_err(bq->dev, "SC ocp limit is out of range\n"); return -EINVAL; } ret = device_property_read_u32(bq->dev, "ti,bypass-ovp-limit-microvolt", &bq->init_data.bypass_vlim); if (ret) bq->init_data.bypass_vlim = bq->chip_info->busovp_byp_def; if (bq->init_data.bypass_vlim > bq->chip_info->busovp_byp_max || bq->init_data.bypass_vlim < bq->chip_info->busovp_byp_min) { dev_err(bq->dev, "Bypass ovp limit is out of range\n"); return -EINVAL; } ret = device_property_read_u32(bq->dev, "ti,bypass-ocp-limit-microamp", &bq->init_data.bypass_ilim); if (ret) bq->init_data.bypass_ilim = bq->chip_info->busocp_def; if (bq->init_data.bypass_ilim > bq->chip_info->busocp_byp_max || bq->init_data.bypass_ilim < bq->chip_info->busocp_byp_min) { dev_err(bq->dev, "Bypass ocp limit is out of range\n"); return -EINVAL; } bq->state.bypass = device_property_read_bool(bq->dev, "ti,bypass-enable"); return 0; } static int bq25980_probe(struct i2c_client *client) { const struct i2c_device_id *id = i2c_client_get_device_id(client); struct device *dev = &client->dev; struct bq25980_device *bq; int ret; bq = devm_kzalloc(dev, sizeof(*bq), GFP_KERNEL); if (!bq) return -ENOMEM; bq->client = client; bq->dev = dev; mutex_init(&bq->lock); strncpy(bq->model_name, id->name, I2C_NAME_SIZE); bq->chip_info = &bq25980_chip_info_tbl[id->driver_data]; bq->regmap = devm_regmap_init_i2c(client, bq->chip_info->regmap_config); if (IS_ERR(bq->regmap)) { dev_err(dev, "Failed to allocate register map\n"); return PTR_ERR(bq->regmap); } i2c_set_clientdata(client, bq); ret = bq25980_parse_dt(bq); if (ret) { dev_err(dev, "Failed to read device tree properties%d\n", ret); return ret; } if (client->irq) { ret = devm_request_threaded_irq(dev, client->irq, NULL, bq25980_irq_handler_thread, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, dev_name(&client->dev), bq); if (ret) return ret; } ret = bq25980_power_supply_init(bq, dev); if (ret) { dev_err(dev, "Failed to register power supply\n"); return ret; } ret = bq25980_hw_init(bq); if (ret) { dev_err(dev, "Cannot initialize the chip.\n"); return ret; } return 0; } static const struct i2c_device_id bq25980_i2c_ids[] = { { "bq25980", BQ25980 }, { "bq25975", BQ25975 }, { "bq25960", BQ25960 }, {}, }; MODULE_DEVICE_TABLE(i2c, bq25980_i2c_ids); static const struct of_device_id bq25980_of_match[] = { { .compatible = "ti,bq25980", .data = (void *)BQ25980 }, { .compatible = "ti,bq25975", .data = (void *)BQ25975 }, { .compatible = "ti,bq25960", .data = (void *)BQ25960 }, { }, }; MODULE_DEVICE_TABLE(of, bq25980_of_match); static struct i2c_driver bq25980_driver = { .driver = { .name = "bq25980-charger", .of_match_table = bq25980_of_match, }, .probe_new = bq25980_probe, .id_table = bq25980_i2c_ids, }; module_i2c_driver(bq25980_driver); MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>"); MODULE_AUTHOR("Ricardo Rivera-Matos <r-rivera-matos@ti.com>"); MODULE_DESCRIPTION("bq25980 charger driver"); MODULE_LICENSE("GPL v2");
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