/* * Driver for the TI bq24190 battery charger. * * Author: Mark A. Greer * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include #include #include #define BQ24190_MANUFACTURER "Texas Instruments" #define BQ24190_REG_ISC 0x00 /* Input Source Control */ #define BQ24190_REG_ISC_EN_HIZ_MASK BIT(7) #define BQ24190_REG_ISC_EN_HIZ_SHIFT 7 #define BQ24190_REG_ISC_VINDPM_MASK (BIT(6) | BIT(5) | BIT(4) | \ BIT(3)) #define BQ24190_REG_ISC_VINDPM_SHIFT 3 #define BQ24190_REG_ISC_IINLIM_MASK (BIT(2) | BIT(1) | BIT(0)) #define BQ24190_REG_ISC_IINLIM_SHIFT 0 #define BQ24190_REG_POC 0x01 /* Power-On Configuration */ #define BQ24190_REG_POC_RESET_MASK BIT(7) #define BQ24190_REG_POC_RESET_SHIFT 7 #define BQ24190_REG_POC_WDT_RESET_MASK BIT(6) #define BQ24190_REG_POC_WDT_RESET_SHIFT 6 #define BQ24190_REG_POC_CHG_CONFIG_MASK (BIT(5) | BIT(4)) #define BQ24190_REG_POC_CHG_CONFIG_SHIFT 4 #define BQ24190_REG_POC_SYS_MIN_MASK (BIT(3) | BIT(2) | BIT(1)) #define BQ24190_REG_POC_SYS_MIN_SHIFT 1 #define BQ24190_REG_POC_BOOST_LIM_MASK BIT(0) #define BQ24190_REG_POC_BOOST_LIM_SHIFT 0 #define BQ24190_REG_CCC 0x02 /* Charge Current Control */ #define BQ24190_REG_CCC_ICHG_MASK (BIT(7) | BIT(6) | BIT(5) | \ BIT(4) | BIT(3) | BIT(2)) #define BQ24190_REG_CCC_ICHG_SHIFT 2 #define BQ24190_REG_CCC_FORCE_20PCT_MASK BIT(0) #define BQ24190_REG_CCC_FORCE_20PCT_SHIFT 0 #define BQ24190_REG_PCTCC 0x03 /* Pre-charge/Termination Current Cntl */ #define BQ24190_REG_PCTCC_IPRECHG_MASK (BIT(7) | BIT(6) | BIT(5) | \ BIT(4)) #define BQ24190_REG_PCTCC_IPRECHG_SHIFT 4 #define BQ24190_REG_PCTCC_ITERM_MASK (BIT(3) | BIT(2) | BIT(1) | \ BIT(0)) #define BQ24190_REG_PCTCC_ITERM_SHIFT 0 #define BQ24190_REG_CVC 0x04 /* Charge Voltage Control */ #define BQ24190_REG_CVC_VREG_MASK (BIT(7) | BIT(6) | BIT(5) | \ BIT(4) | BIT(3) | BIT(2)) #define BQ24190_REG_CVC_VREG_SHIFT 2 #define BQ24190_REG_CVC_BATLOWV_MASK BIT(1) #define BQ24190_REG_CVC_BATLOWV_SHIFT 1 #define BQ24190_REG_CVC_VRECHG_MASK BIT(0) #define BQ24190_REG_CVC_VRECHG_SHIFT 0 #define BQ24190_REG_CTTC 0x05 /* Charge Term/Timer Control */ #define BQ24190_REG_CTTC_EN_TERM_MASK BIT(7) #define BQ24190_REG_CTTC_EN_TERM_SHIFT 7 #define BQ24190_REG_CTTC_TERM_STAT_MASK BIT(6) #define BQ24190_REG_CTTC_TERM_STAT_SHIFT 6 #define BQ24190_REG_CTTC_WATCHDOG_MASK (BIT(5) | BIT(4)) #define BQ24190_REG_CTTC_WATCHDOG_SHIFT 4 #define BQ24190_REG_CTTC_EN_TIMER_MASK BIT(3) #define BQ24190_REG_CTTC_EN_TIMER_SHIFT 3 #define BQ24190_REG_CTTC_CHG_TIMER_MASK (BIT(2) | BIT(1)) #define BQ24190_REG_CTTC_CHG_TIMER_SHIFT 1 #define BQ24190_REG_CTTC_JEITA_ISET_MASK BIT(0) #define BQ24190_REG_CTTC_JEITA_ISET_SHIFT 0 #define BQ24190_REG_ICTRC 0x06 /* IR Comp/Thermal Regulation Control */ #define BQ24190_REG_ICTRC_BAT_COMP_MASK (BIT(7) | BIT(6) | BIT(5)) #define BQ24190_REG_ICTRC_BAT_COMP_SHIFT 5 #define BQ24190_REG_ICTRC_VCLAMP_MASK (BIT(4) | BIT(3) | BIT(2)) #define BQ24190_REG_ICTRC_VCLAMP_SHIFT 2 #define BQ24190_REG_ICTRC_TREG_MASK (BIT(1) | BIT(0)) #define BQ24190_REG_ICTRC_TREG_SHIFT 0 #define BQ24190_REG_MOC 0x07 /* Misc. Operation Control */ #define BQ24190_REG_MOC_DPDM_EN_MASK BIT(7) #define BQ24190_REG_MOC_DPDM_EN_SHIFT 7 #define BQ24190_REG_MOC_TMR2X_EN_MASK BIT(6) #define BQ24190_REG_MOC_TMR2X_EN_SHIFT 6 #define BQ24190_REG_MOC_BATFET_DISABLE_MASK BIT(5) #define BQ24190_REG_MOC_BATFET_DISABLE_SHIFT 5 #define BQ24190_REG_MOC_JEITA_VSET_MASK BIT(4) #define BQ24190_REG_MOC_JEITA_VSET_SHIFT 4 #define BQ24190_REG_MOC_INT_MASK_MASK (BIT(1) | BIT(0)) #define BQ24190_REG_MOC_INT_MASK_SHIFT 0 #define BQ24190_REG_SS 0x08 /* System Status */ #define BQ24190_REG_SS_VBUS_STAT_MASK (BIT(7) | BIT(6)) #define BQ24190_REG_SS_VBUS_STAT_SHIFT 6 #define BQ24190_REG_SS_CHRG_STAT_MASK (BIT(5) | BIT(4)) #define BQ24190_REG_SS_CHRG_STAT_SHIFT 4 #define BQ24190_REG_SS_DPM_STAT_MASK BIT(3) #define BQ24190_REG_SS_DPM_STAT_SHIFT 3 #define BQ24190_REG_SS_PG_STAT_MASK BIT(2) #define BQ24190_REG_SS_PG_STAT_SHIFT 2 #define BQ24190_REG_SS_THERM_STAT_MASK BIT(1) #define BQ24190_REG_SS_THERM_STAT_SHIFT 1 #define BQ24190_REG_SS_VSYS_STAT_MASK BIT(0) #define BQ24190_REG_SS_VSYS_STAT_SHIFT 0 #define BQ24190_REG_F 0x09 /* Fault */ #define BQ24190_REG_F_WATCHDOG_FAULT_MASK BIT(7) #define BQ24190_REG_F_WATCHDOG_FAULT_SHIFT 7 #define BQ24190_REG_F_BOOST_FAULT_MASK BIT(6) #define BQ24190_REG_F_BOOST_FAULT_SHIFT 6 #define BQ24190_REG_F_CHRG_FAULT_MASK (BIT(5) | BIT(4)) #define BQ24190_REG_F_CHRG_FAULT_SHIFT 4 #define BQ24190_REG_F_BAT_FAULT_MASK BIT(3) #define BQ24190_REG_F_BAT_FAULT_SHIFT 3 #define BQ24190_REG_F_NTC_FAULT_MASK (BIT(2) | BIT(1) | BIT(0)) #define BQ24190_REG_F_NTC_FAULT_SHIFT 0 #define BQ24190_REG_VPRS 0x0A /* Vendor/Part/Revision Status */ #define BQ24190_REG_VPRS_PN_MASK (BIT(5) | BIT(4) | BIT(3)) #define BQ24190_REG_VPRS_PN_SHIFT 3 #define BQ24190_REG_VPRS_PN_24190 0x4 #define BQ24190_REG_VPRS_PN_24192 0x5 /* Also 24193 */ #define BQ24190_REG_VPRS_PN_24192I 0x3 #define BQ24190_REG_VPRS_TS_PROFILE_MASK BIT(2) #define BQ24190_REG_VPRS_TS_PROFILE_SHIFT 2 #define BQ24190_REG_VPRS_DEV_REG_MASK (BIT(1) | BIT(0)) #define BQ24190_REG_VPRS_DEV_REG_SHIFT 0 /* * The FAULT register is latched by the bq24190 (except for NTC_FAULT) * so the first read after a fault returns the latched value and subsequent * reads return the current value. In order to return the fault status * to the user, have the interrupt handler save the reg's value and retrieve * it in the appropriate health/status routine. Each routine has its own * flag indicating whether it should use the value stored by the last run * of the interrupt handler or do an actual reg read. That way each routine * can report back whatever fault may have occured. */ struct bq24190_dev_info { struct i2c_client *client; struct device *dev; struct power_supply *charger; struct power_supply *battery; char model_name[I2C_NAME_SIZE]; kernel_ulong_t model; unsigned int gpio_int; unsigned int irq; struct mutex f_reg_lock; bool first_time; bool charger_health_valid; bool battery_health_valid; bool battery_status_valid; u8 f_reg; u8 ss_reg; u8 watchdog; }; /* * The tables below provide a 2-way mapping for the value that goes in * the register field and the real-world value that it represents. * The index of the array is the value that goes in the register; the * number at that index in the array is the real-world value that it * represents. */ /* REG02[7:2] (ICHG) in uAh */ static const int bq24190_ccc_ichg_values[] = { 512000, 576000, 640000, 704000, 768000, 832000, 896000, 960000, 1024000, 1088000, 1152000, 1216000, 1280000, 1344000, 1408000, 1472000, 1536000, 1600000, 1664000, 1728000, 1792000, 1856000, 1920000, 1984000, 2048000, 2112000, 2176000, 2240000, 2304000, 2368000, 2432000, 2496000, 2560000, 2624000, 2688000, 2752000, 2816000, 2880000, 2944000, 3008000, 3072000, 3136000, 3200000, 3264000, 3328000, 3392000, 3456000, 3520000, 3584000, 3648000, 3712000, 3776000, 3840000, 3904000, 3968000, 4032000, 4096000, 4160000, 4224000, 4288000, 4352000, 4416000, 4480000, 4544000 }; /* REG04[7:2] (VREG) in uV */ static const int bq24190_cvc_vreg_values[] = { 3504000, 3520000, 3536000, 3552000, 3568000, 3584000, 3600000, 3616000, 3632000, 3648000, 3664000, 3680000, 3696000, 3712000, 3728000, 3744000, 3760000, 3776000, 3792000, 3808000, 3824000, 3840000, 3856000, 3872000, 3888000, 3904000, 3920000, 3936000, 3952000, 3968000, 3984000, 4000000, 4016000, 4032000, 4048000, 4064000, 4080000, 4096000, 4112000, 4128000, 4144000, 4160000, 4176000, 4192000, 4208000, 4224000, 4240000, 4256000, 4272000, 4288000, 4304000, 4320000, 4336000, 4352000, 4368000, 4384000, 4400000 }; /* REG06[1:0] (TREG) in tenths of degrees Celcius */ static const int bq24190_ictrc_treg_values[] = { 600, 800, 1000, 1200 }; /* * Return the index in 'tbl' of greatest value that is less than or equal to * 'val'. The index range returned is 0 to 'tbl_size' - 1. Assumes that * the values in 'tbl' are sorted from smallest to largest and 'tbl_size' * is less than 2^8. */ static u8 bq24190_find_idx(const int tbl[], int tbl_size, int v) { int i; for (i = 1; i < tbl_size; i++) if (v < tbl[i]) break; return i - 1; } /* Basic driver I/O routines */ static int bq24190_read(struct bq24190_dev_info *bdi, u8 reg, u8 *data) { int ret; ret = i2c_smbus_read_byte_data(bdi->client, reg); if (ret < 0) return ret; *data = ret; return 0; } static int bq24190_write(struct bq24190_dev_info *bdi, u8 reg, u8 data) { return i2c_smbus_write_byte_data(bdi->client, reg, data); } static int bq24190_read_mask(struct bq24190_dev_info *bdi, u8 reg, u8 mask, u8 shift, u8 *data) { u8 v; int ret; ret = bq24190_read(bdi, reg, &v); if (ret < 0) return ret; v &= mask; v >>= shift; *data = v; return 0; } static int bq24190_write_mask(struct bq24190_dev_info *bdi, u8 reg, u8 mask, u8 shift, u8 data) { u8 v; int ret; ret = bq24190_read(bdi, reg, &v); if (ret < 0) return ret; v &= ~mask; v |= ((data << shift) & mask); return bq24190_write(bdi, reg, v); } static int bq24190_get_field_val(struct bq24190_dev_info *bdi, u8 reg, u8 mask, u8 shift, const int tbl[], int tbl_size, int *val) { u8 v; int ret; ret = bq24190_read_mask(bdi, reg, mask, shift, &v); if (ret < 0) return ret; v = (v >= tbl_size) ? (tbl_size - 1) : v; *val = tbl[v]; return 0; } static int bq24190_set_field_val(struct bq24190_dev_info *bdi, u8 reg, u8 mask, u8 shift, const int tbl[], int tbl_size, int val) { u8 idx; idx = bq24190_find_idx(tbl, tbl_size, val); return bq24190_write_mask(bdi, reg, mask, shift, idx); } #ifdef CONFIG_SYSFS /* * There are a numerous options that are configurable on the bq24190 * that go well beyond what the power_supply properties provide access to. * Provide sysfs access to them so they can be examined and possibly modified * on the fly. They will be provided for the charger power_supply object only * and will be prefixed by 'f_' to make them easier to recognize. */ #define BQ24190_SYSFS_FIELD(_name, r, f, m, store) \ { \ .attr = __ATTR(f_##_name, m, bq24190_sysfs_show, store), \ .reg = BQ24190_REG_##r, \ .mask = BQ24190_REG_##r##_##f##_MASK, \ .shift = BQ24190_REG_##r##_##f##_SHIFT, \ } #define BQ24190_SYSFS_FIELD_RW(_name, r, f) \ BQ24190_SYSFS_FIELD(_name, r, f, S_IWUSR | S_IRUGO, \ bq24190_sysfs_store) #define BQ24190_SYSFS_FIELD_RO(_name, r, f) \ BQ24190_SYSFS_FIELD(_name, r, f, S_IRUGO, NULL) static ssize_t bq24190_sysfs_show(struct device *dev, struct device_attribute *attr, char *buf); static ssize_t bq24190_sysfs_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); struct bq24190_sysfs_field_info { struct device_attribute attr; u8 reg; u8 mask; u8 shift; }; /* On i386 ptrace-abi.h defines SS that breaks the macro calls below. */ #undef SS static struct bq24190_sysfs_field_info bq24190_sysfs_field_tbl[] = { /* sysfs name reg field in reg */ BQ24190_SYSFS_FIELD_RW(en_hiz, ISC, EN_HIZ), BQ24190_SYSFS_FIELD_RW(vindpm, ISC, VINDPM), BQ24190_SYSFS_FIELD_RW(iinlim, ISC, IINLIM), BQ24190_SYSFS_FIELD_RW(chg_config, POC, CHG_CONFIG), BQ24190_SYSFS_FIELD_RW(sys_min, POC, SYS_MIN), BQ24190_SYSFS_FIELD_RW(boost_lim, POC, BOOST_LIM), BQ24190_SYSFS_FIELD_RW(ichg, CCC, ICHG), BQ24190_SYSFS_FIELD_RW(force_20_pct, CCC, FORCE_20PCT), BQ24190_SYSFS_FIELD_RW(iprechg, PCTCC, IPRECHG), BQ24190_SYSFS_FIELD_RW(iterm, PCTCC, ITERM), BQ24190_SYSFS_FIELD_RW(vreg, CVC, VREG), BQ24190_SYSFS_FIELD_RW(batlowv, CVC, BATLOWV), BQ24190_SYSFS_FIELD_RW(vrechg, CVC, VRECHG), BQ24190_SYSFS_FIELD_RW(en_term, CTTC, EN_TERM), BQ24190_SYSFS_FIELD_RW(term_stat, CTTC, TERM_STAT), BQ24190_SYSFS_FIELD_RO(watchdog, CTTC, WATCHDOG), BQ24190_SYSFS_FIELD_RW(en_timer, CTTC, EN_TIMER), BQ24190_SYSFS_FIELD_RW(chg_timer, CTTC, CHG_TIMER), BQ24190_SYSFS_FIELD_RW(jeta_iset, CTTC, JEITA_ISET), BQ24190_SYSFS_FIELD_RW(bat_comp, ICTRC, BAT_COMP), BQ24190_SYSFS_FIELD_RW(vclamp, ICTRC, VCLAMP), BQ24190_SYSFS_FIELD_RW(treg, ICTRC, TREG), BQ24190_SYSFS_FIELD_RW(dpdm_en, MOC, DPDM_EN), BQ24190_SYSFS_FIELD_RW(tmr2x_en, MOC, TMR2X_EN), BQ24190_SYSFS_FIELD_RW(batfet_disable, MOC, BATFET_DISABLE), BQ24190_SYSFS_FIELD_RW(jeita_vset, MOC, JEITA_VSET), BQ24190_SYSFS_FIELD_RO(int_mask, MOC, INT_MASK), BQ24190_SYSFS_FIELD_RO(vbus_stat, SS, VBUS_STAT), BQ24190_SYSFS_FIELD_RO(chrg_stat, SS, CHRG_STAT), BQ24190_SYSFS_FIELD_RO(dpm_stat, SS, DPM_STAT), BQ24190_SYSFS_FIELD_RO(pg_stat, SS, PG_STAT), BQ24190_SYSFS_FIELD_RO(therm_stat, SS, THERM_STAT), BQ24190_SYSFS_FIELD_RO(vsys_stat, SS, VSYS_STAT), BQ24190_SYSFS_FIELD_RO(watchdog_fault, F, WATCHDOG_FAULT), BQ24190_SYSFS_FIELD_RO(boost_fault, F, BOOST_FAULT), BQ24190_SYSFS_FIELD_RO(chrg_fault, F, CHRG_FAULT), BQ24190_SYSFS_FIELD_RO(bat_fault, F, BAT_FAULT), BQ24190_SYSFS_FIELD_RO(ntc_fault, F, NTC_FAULT), BQ24190_SYSFS_FIELD_RO(pn, VPRS, PN), BQ24190_SYSFS_FIELD_RO(ts_profile, VPRS, TS_PROFILE), BQ24190_SYSFS_FIELD_RO(dev_reg, VPRS, DEV_REG), }; static struct attribute * bq24190_sysfs_attrs[ARRAY_SIZE(bq24190_sysfs_field_tbl) + 1]; static const struct attribute_group bq24190_sysfs_attr_group = { .attrs = bq24190_sysfs_attrs, }; static void bq24190_sysfs_init_attrs(void) { int i, limit = ARRAY_SIZE(bq24190_sysfs_field_tbl); for (i = 0; i < limit; i++) bq24190_sysfs_attrs[i] = &bq24190_sysfs_field_tbl[i].attr.attr; bq24190_sysfs_attrs[limit] = NULL; /* Has additional entry for this */ } static struct bq24190_sysfs_field_info *bq24190_sysfs_field_lookup( const char *name) { int i, limit = ARRAY_SIZE(bq24190_sysfs_field_tbl); for (i = 0; i < limit; i++) if (!strcmp(name, bq24190_sysfs_field_tbl[i].attr.attr.name)) break; if (i >= limit) return NULL; return &bq24190_sysfs_field_tbl[i]; } static ssize_t bq24190_sysfs_show(struct device *dev, struct device_attribute *attr, char *buf) { struct power_supply *psy = dev_get_drvdata(dev); struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); struct bq24190_sysfs_field_info *info; int ret; u8 v; info = bq24190_sysfs_field_lookup(attr->attr.name); if (!info) return -EINVAL; ret = bq24190_read_mask(bdi, info->reg, info->mask, info->shift, &v); if (ret) return ret; return scnprintf(buf, PAGE_SIZE, "%hhx\n", v); } static ssize_t bq24190_sysfs_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct power_supply *psy = dev_get_drvdata(dev); struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); struct bq24190_sysfs_field_info *info; int ret; u8 v; info = bq24190_sysfs_field_lookup(attr->attr.name); if (!info) return -EINVAL; ret = kstrtou8(buf, 0, &v); if (ret < 0) return ret; ret = bq24190_write_mask(bdi, info->reg, info->mask, info->shift, v); if (ret) return ret; return count; } static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi) { bq24190_sysfs_init_attrs(); return sysfs_create_group(&bdi->charger->dev.kobj, &bq24190_sysfs_attr_group); } static void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi) { sysfs_remove_group(&bdi->charger->dev.kobj, &bq24190_sysfs_attr_group); } #else static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi) { return 0; } static inline void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi) {} #endif /* * According to the "Host Mode and default Mode" section of the * manual, a write to any register causes the bq24190 to switch * from default mode to host mode. It will switch back to default * mode after a WDT timeout unless the WDT is turned off as well. * So, by simply turning off the WDT, we accomplish both with the * same write. */ static int bq24190_set_mode_host(struct bq24190_dev_info *bdi) { int ret; u8 v; ret = bq24190_read(bdi, BQ24190_REG_CTTC, &v); if (ret < 0) return ret; bdi->watchdog = ((v & BQ24190_REG_CTTC_WATCHDOG_MASK) >> BQ24190_REG_CTTC_WATCHDOG_SHIFT); v &= ~BQ24190_REG_CTTC_WATCHDOG_MASK; return bq24190_write(bdi, BQ24190_REG_CTTC, v); } static int bq24190_register_reset(struct bq24190_dev_info *bdi) { int ret, limit = 100; u8 v; /* Reset the registers */ ret = bq24190_write_mask(bdi, BQ24190_REG_POC, BQ24190_REG_POC_RESET_MASK, BQ24190_REG_POC_RESET_SHIFT, 0x1); if (ret < 0) return ret; /* Reset bit will be cleared by hardware so poll until it is */ do { ret = bq24190_read_mask(bdi, BQ24190_REG_POC, BQ24190_REG_POC_RESET_MASK, BQ24190_REG_POC_RESET_SHIFT, &v); if (ret < 0) return ret; if (!v) break; udelay(10); } while (--limit); if (!limit) return -EIO; return 0; } /* Charger power supply property routines */ static int bq24190_charger_get_charge_type(struct bq24190_dev_info *bdi, union power_supply_propval *val) { u8 v; int type, ret; ret = bq24190_read_mask(bdi, BQ24190_REG_POC, BQ24190_REG_POC_CHG_CONFIG_MASK, BQ24190_REG_POC_CHG_CONFIG_SHIFT, &v); if (ret < 0) return ret; /* If POC[CHG_CONFIG] (REG01[5:4]) == 0, charge is disabled */ if (!v) { type = POWER_SUPPLY_CHARGE_TYPE_NONE; } else { ret = bq24190_read_mask(bdi, BQ24190_REG_CCC, BQ24190_REG_CCC_FORCE_20PCT_MASK, BQ24190_REG_CCC_FORCE_20PCT_SHIFT, &v); if (ret < 0) return ret; type = (v) ? POWER_SUPPLY_CHARGE_TYPE_TRICKLE : POWER_SUPPLY_CHARGE_TYPE_FAST; } val->intval = type; return 0; } static int bq24190_charger_set_charge_type(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { u8 chg_config, force_20pct, en_term; int ret; /* * According to the "Termination when REG02[0] = 1" section of * the bq24190 manual, the trickle charge could be less than the * termination current so it recommends turning off the termination * function. * * Note: AFAICT from the datasheet, the user will have to manually * turn off the charging when in 20% mode. If its not turned off, * there could be battery damage. So, use this mode at your own risk. */ switch (val->intval) { case POWER_SUPPLY_CHARGE_TYPE_NONE: chg_config = 0x0; break; case POWER_SUPPLY_CHARGE_TYPE_TRICKLE: chg_config = 0x1; force_20pct = 0x1; en_term = 0x0; break; case POWER_SUPPLY_CHARGE_TYPE_FAST: chg_config = 0x1; force_20pct = 0x0; en_term = 0x1; break; default: return -EINVAL; } if (chg_config) { /* Enabling the charger */ ret = bq24190_write_mask(bdi, BQ24190_REG_CCC, BQ24190_REG_CCC_FORCE_20PCT_MASK, BQ24190_REG_CCC_FORCE_20PCT_SHIFT, force_20pct); if (ret < 0) return ret; ret = bq24190_write_mask(bdi, BQ24190_REG_CTTC, BQ24190_REG_CTTC_EN_TERM_MASK, BQ24190_REG_CTTC_EN_TERM_SHIFT, en_term); if (ret < 0) return ret; } return bq24190_write_mask(bdi, BQ24190_REG_POC, BQ24190_REG_POC_CHG_CONFIG_MASK, BQ24190_REG_POC_CHG_CONFIG_SHIFT, chg_config); } static int bq24190_charger_get_health(struct bq24190_dev_info *bdi, union power_supply_propval *val) { u8 v; int health, ret; mutex_lock(&bdi->f_reg_lock); if (bdi->charger_health_valid) { v = bdi->f_reg; bdi->charger_health_valid = false; mutex_unlock(&bdi->f_reg_lock); } else { mutex_unlock(&bdi->f_reg_lock); ret = bq24190_read(bdi, BQ24190_REG_F, &v); if (ret < 0) return ret; } if (v & BQ24190_REG_F_BOOST_FAULT_MASK) { /* * This could be over-current or over-voltage but there's * no way to tell which. Return 'OVERVOLTAGE' since there * isn't an 'OVERCURRENT' value defined that we can return * even if it was over-current. */ health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; } else { v &= BQ24190_REG_F_CHRG_FAULT_MASK; v >>= BQ24190_REG_F_CHRG_FAULT_SHIFT; switch (v) { case 0x0: /* Normal */ health = POWER_SUPPLY_HEALTH_GOOD; break; case 0x1: /* Input Fault (VBUS OVP or VBATintval = health; return 0; } static int bq24190_charger_get_online(struct bq24190_dev_info *bdi, union power_supply_propval *val) { u8 v; int ret; ret = bq24190_read_mask(bdi, BQ24190_REG_SS, BQ24190_REG_SS_PG_STAT_MASK, BQ24190_REG_SS_PG_STAT_SHIFT, &v); if (ret < 0) return ret; val->intval = v; return 0; } static int bq24190_charger_get_current(struct bq24190_dev_info *bdi, union power_supply_propval *val) { u8 v; int curr, ret; ret = bq24190_get_field_val(bdi, BQ24190_REG_CCC, BQ24190_REG_CCC_ICHG_MASK, BQ24190_REG_CCC_ICHG_SHIFT, bq24190_ccc_ichg_values, ARRAY_SIZE(bq24190_ccc_ichg_values), &curr); if (ret < 0) return ret; ret = bq24190_read_mask(bdi, BQ24190_REG_CCC, BQ24190_REG_CCC_FORCE_20PCT_MASK, BQ24190_REG_CCC_FORCE_20PCT_SHIFT, &v); if (ret < 0) return ret; /* If FORCE_20PCT is enabled, then current is 20% of ICHG value */ if (v) curr /= 5; val->intval = curr; return 0; } static int bq24190_charger_get_current_max(struct bq24190_dev_info *bdi, union power_supply_propval *val) { int idx = ARRAY_SIZE(bq24190_ccc_ichg_values) - 1; val->intval = bq24190_ccc_ichg_values[idx]; return 0; } static int bq24190_charger_set_current(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { u8 v; int ret, curr = val->intval; ret = bq24190_read_mask(bdi, BQ24190_REG_CCC, BQ24190_REG_CCC_FORCE_20PCT_MASK, BQ24190_REG_CCC_FORCE_20PCT_SHIFT, &v); if (ret < 0) return ret; /* If FORCE_20PCT is enabled, have to multiply value passed in by 5 */ if (v) curr *= 5; return bq24190_set_field_val(bdi, BQ24190_REG_CCC, BQ24190_REG_CCC_ICHG_MASK, BQ24190_REG_CCC_ICHG_SHIFT, bq24190_ccc_ichg_values, ARRAY_SIZE(bq24190_ccc_ichg_values), curr); } static int bq24190_charger_get_voltage(struct bq24190_dev_info *bdi, union power_supply_propval *val) { int voltage, ret; ret = bq24190_get_field_val(bdi, BQ24190_REG_CVC, BQ24190_REG_CVC_VREG_MASK, BQ24190_REG_CVC_VREG_SHIFT, bq24190_cvc_vreg_values, ARRAY_SIZE(bq24190_cvc_vreg_values), &voltage); if (ret < 0) return ret; val->intval = voltage; return 0; } static int bq24190_charger_get_voltage_max(struct bq24190_dev_info *bdi, union power_supply_propval *val) { int idx = ARRAY_SIZE(bq24190_cvc_vreg_values) - 1; val->intval = bq24190_cvc_vreg_values[idx]; return 0; } static int bq24190_charger_set_voltage(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { return bq24190_set_field_val(bdi, BQ24190_REG_CVC, BQ24190_REG_CVC_VREG_MASK, BQ24190_REG_CVC_VREG_SHIFT, bq24190_cvc_vreg_values, ARRAY_SIZE(bq24190_cvc_vreg_values), val->intval); } static int bq24190_charger_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); int ret; dev_dbg(bdi->dev, "prop: %d\n", psp); pm_runtime_get_sync(bdi->dev); switch (psp) { case POWER_SUPPLY_PROP_CHARGE_TYPE: ret = bq24190_charger_get_charge_type(bdi, val); break; case POWER_SUPPLY_PROP_HEALTH: ret = bq24190_charger_get_health(bdi, val); break; case POWER_SUPPLY_PROP_ONLINE: ret = bq24190_charger_get_online(bdi, val); break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: ret = bq24190_charger_get_current(bdi, val); break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: ret = bq24190_charger_get_current_max(bdi, val); break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: ret = bq24190_charger_get_voltage(bdi, val); break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: ret = bq24190_charger_get_voltage_max(bdi, val); break; case POWER_SUPPLY_PROP_SCOPE: val->intval = POWER_SUPPLY_SCOPE_SYSTEM; ret = 0; break; case POWER_SUPPLY_PROP_MODEL_NAME: val->strval = bdi->model_name; ret = 0; break; case POWER_SUPPLY_PROP_MANUFACTURER: val->strval = BQ24190_MANUFACTURER; ret = 0; break; default: ret = -ENODATA; } pm_runtime_put_sync(bdi->dev); return ret; } static int bq24190_charger_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); int ret; dev_dbg(bdi->dev, "prop: %d\n", psp); pm_runtime_get_sync(bdi->dev); switch (psp) { case POWER_SUPPLY_PROP_CHARGE_TYPE: ret = bq24190_charger_set_charge_type(bdi, val); break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: ret = bq24190_charger_set_current(bdi, val); break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: ret = bq24190_charger_set_voltage(bdi, val); break; default: ret = -EINVAL; } pm_runtime_put_sync(bdi->dev); return ret; } static int bq24190_charger_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { int ret; switch (psp) { case POWER_SUPPLY_PROP_CHARGE_TYPE: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: ret = 1; break; default: ret = 0; } return ret; } static enum power_supply_property bq24190_charger_properties[] = { POWER_SUPPLY_PROP_TYPE, POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_ONLINE, 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_SCOPE, POWER_SUPPLY_PROP_MODEL_NAME, POWER_SUPPLY_PROP_MANUFACTURER, }; static char *bq24190_charger_supplied_to[] = { "main-battery", }; static const struct power_supply_desc bq24190_charger_desc = { .name = "bq24190-charger", .type = POWER_SUPPLY_TYPE_USB, .properties = bq24190_charger_properties, .num_properties = ARRAY_SIZE(bq24190_charger_properties), .get_property = bq24190_charger_get_property, .set_property = bq24190_charger_set_property, .property_is_writeable = bq24190_charger_property_is_writeable, }; /* Battery power supply property routines */ static int bq24190_battery_get_status(struct bq24190_dev_info *bdi, union power_supply_propval *val) { u8 ss_reg, chrg_fault; int status, ret; mutex_lock(&bdi->f_reg_lock); if (bdi->battery_status_valid) { chrg_fault = bdi->f_reg; bdi->battery_status_valid = false; mutex_unlock(&bdi->f_reg_lock); } else { mutex_unlock(&bdi->f_reg_lock); ret = bq24190_read(bdi, BQ24190_REG_F, &chrg_fault); if (ret < 0) return ret; } chrg_fault &= BQ24190_REG_F_CHRG_FAULT_MASK; chrg_fault >>= BQ24190_REG_F_CHRG_FAULT_SHIFT; ret = bq24190_read(bdi, BQ24190_REG_SS, &ss_reg); if (ret < 0) return ret; /* * The battery must be discharging when any of these are true: * - there is no good power source; * - there is a charge fault. * Could also be discharging when in "supplement mode" but * there is no way to tell when its in that mode. */ if (!(ss_reg & BQ24190_REG_SS_PG_STAT_MASK) || chrg_fault) { status = POWER_SUPPLY_STATUS_DISCHARGING; } else { ss_reg &= BQ24190_REG_SS_CHRG_STAT_MASK; ss_reg >>= BQ24190_REG_SS_CHRG_STAT_SHIFT; switch (ss_reg) { case 0x0: /* Not Charging */ status = POWER_SUPPLY_STATUS_NOT_CHARGING; break; case 0x1: /* Pre-charge */ case 0x2: /* Fast Charging */ status = POWER_SUPPLY_STATUS_CHARGING; break; case 0x3: /* Charge Termination Done */ status = POWER_SUPPLY_STATUS_FULL; break; default: ret = -EIO; } } if (!ret) val->intval = status; return ret; } static int bq24190_battery_get_health(struct bq24190_dev_info *bdi, union power_supply_propval *val) { u8 v; int health, ret; mutex_lock(&bdi->f_reg_lock); if (bdi->battery_health_valid) { v = bdi->f_reg; bdi->battery_health_valid = false; mutex_unlock(&bdi->f_reg_lock); } else { mutex_unlock(&bdi->f_reg_lock); ret = bq24190_read(bdi, BQ24190_REG_F, &v); if (ret < 0) return ret; } if (v & BQ24190_REG_F_BAT_FAULT_MASK) { health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; } else { v &= BQ24190_REG_F_NTC_FAULT_MASK; v >>= BQ24190_REG_F_NTC_FAULT_SHIFT; switch (v) { case 0x0: /* Normal */ health = POWER_SUPPLY_HEALTH_GOOD; break; case 0x1: /* TS1 Cold */ case 0x3: /* TS2 Cold */ case 0x5: /* Both Cold */ health = POWER_SUPPLY_HEALTH_COLD; break; case 0x2: /* TS1 Hot */ case 0x4: /* TS2 Hot */ case 0x6: /* Both Hot */ health = POWER_SUPPLY_HEALTH_OVERHEAT; break; default: health = POWER_SUPPLY_HEALTH_UNKNOWN; } } val->intval = health; return 0; } static int bq24190_battery_get_online(struct bq24190_dev_info *bdi, union power_supply_propval *val) { u8 batfet_disable; int ret; ret = bq24190_read_mask(bdi, BQ24190_REG_MOC, BQ24190_REG_MOC_BATFET_DISABLE_MASK, BQ24190_REG_MOC_BATFET_DISABLE_SHIFT, &batfet_disable); if (ret < 0) return ret; val->intval = !batfet_disable; return 0; } static int bq24190_battery_set_online(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { return bq24190_write_mask(bdi, BQ24190_REG_MOC, BQ24190_REG_MOC_BATFET_DISABLE_MASK, BQ24190_REG_MOC_BATFET_DISABLE_SHIFT, !val->intval); } static int bq24190_battery_get_temp_alert_max(struct bq24190_dev_info *bdi, union power_supply_propval *val) { int temp, ret; ret = bq24190_get_field_val(bdi, BQ24190_REG_ICTRC, BQ24190_REG_ICTRC_TREG_MASK, BQ24190_REG_ICTRC_TREG_SHIFT, bq24190_ictrc_treg_values, ARRAY_SIZE(bq24190_ictrc_treg_values), &temp); if (ret < 0) return ret; val->intval = temp; return 0; } static int bq24190_battery_set_temp_alert_max(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { return bq24190_set_field_val(bdi, BQ24190_REG_ICTRC, BQ24190_REG_ICTRC_TREG_MASK, BQ24190_REG_ICTRC_TREG_SHIFT, bq24190_ictrc_treg_values, ARRAY_SIZE(bq24190_ictrc_treg_values), val->intval); } static int bq24190_battery_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); int ret; dev_dbg(bdi->dev, "prop: %d\n", psp); pm_runtime_get_sync(bdi->dev); switch (psp) { case POWER_SUPPLY_PROP_STATUS: ret = bq24190_battery_get_status(bdi, val); break; case POWER_SUPPLY_PROP_HEALTH: ret = bq24190_battery_get_health(bdi, val); break; case POWER_SUPPLY_PROP_ONLINE: ret = bq24190_battery_get_online(bdi, val); break; case POWER_SUPPLY_PROP_TECHNOLOGY: /* Could be Li-on or Li-polymer but no way to tell which */ val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN; ret = 0; break; case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: ret = bq24190_battery_get_temp_alert_max(bdi, val); break; case POWER_SUPPLY_PROP_SCOPE: val->intval = POWER_SUPPLY_SCOPE_SYSTEM; ret = 0; break; default: ret = -ENODATA; } pm_runtime_put_sync(bdi->dev); return ret; } static int bq24190_battery_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); int ret; dev_dbg(bdi->dev, "prop: %d\n", psp); pm_runtime_put_sync(bdi->dev); switch (psp) { case POWER_SUPPLY_PROP_ONLINE: ret = bq24190_battery_set_online(bdi, val); break; case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: ret = bq24190_battery_set_temp_alert_max(bdi, val); break; default: ret = -EINVAL; } pm_runtime_put_sync(bdi->dev); return ret; } static int bq24190_battery_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { int ret; switch (psp) { case POWER_SUPPLY_PROP_ONLINE: case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: ret = 1; break; default: ret = 0; } return ret; } static enum power_supply_property bq24190_battery_properties[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_TECHNOLOGY, POWER_SUPPLY_PROP_TEMP_ALERT_MAX, POWER_SUPPLY_PROP_SCOPE, }; static const struct power_supply_desc bq24190_battery_desc = { .name = "bq24190-battery", .type = POWER_SUPPLY_TYPE_BATTERY, .properties = bq24190_battery_properties, .num_properties = ARRAY_SIZE(bq24190_battery_properties), .get_property = bq24190_battery_get_property, .set_property = bq24190_battery_set_property, .property_is_writeable = bq24190_battery_property_is_writeable, }; static irqreturn_t bq24190_irq_handler_thread(int irq, void *data) { struct bq24190_dev_info *bdi = data; bool alert_userspace = false; u8 ss_reg = 0, f_reg = 0; int ret; pm_runtime_get_sync(bdi->dev); ret = bq24190_read(bdi, BQ24190_REG_SS, &ss_reg); if (ret < 0) { dev_err(bdi->dev, "Can't read SS reg: %d\n", ret); goto out; } if (ss_reg != bdi->ss_reg) { /* * The device is in host mode so when PG_STAT goes from 1->0 * (i.e., power removed) HIZ needs to be disabled. */ if ((bdi->ss_reg & BQ24190_REG_SS_PG_STAT_MASK) && !(ss_reg & BQ24190_REG_SS_PG_STAT_MASK)) { ret = bq24190_write_mask(bdi, BQ24190_REG_ISC, BQ24190_REG_ISC_EN_HIZ_MASK, BQ24190_REG_ISC_EN_HIZ_SHIFT, 0); if (ret < 0) dev_err(bdi->dev, "Can't access ISC reg: %d\n", ret); } bdi->ss_reg = ss_reg; alert_userspace = true; } mutex_lock(&bdi->f_reg_lock); ret = bq24190_read(bdi, BQ24190_REG_F, &f_reg); if (ret < 0) { mutex_unlock(&bdi->f_reg_lock); dev_err(bdi->dev, "Can't read F reg: %d\n", ret); goto out; } if (f_reg != bdi->f_reg) { bdi->f_reg = f_reg; bdi->charger_health_valid = true; bdi->battery_health_valid = true; bdi->battery_status_valid = true; alert_userspace = true; } mutex_unlock(&bdi->f_reg_lock); /* * Sometimes bq24190 gives a steady trickle of interrupts even * though the watchdog timer is turned off and neither the STATUS * nor FAULT registers have changed. Weed out these sprurious * interrupts so userspace isn't alerted for no reason. * In addition, the chip always generates an interrupt after * register reset so we should ignore that one (the very first * interrupt received). */ if (alert_userspace) { if (!bdi->first_time) { power_supply_changed(bdi->charger); power_supply_changed(bdi->battery); } else { bdi->first_time = false; } } out: pm_runtime_put_sync(bdi->dev); dev_dbg(bdi->dev, "ss_reg: 0x%02x, f_reg: 0x%02x\n", ss_reg, f_reg); return IRQ_HANDLED; } static int bq24190_hw_init(struct bq24190_dev_info *bdi) { u8 v; int ret; pm_runtime_get_sync(bdi->dev); /* First check that the device really is what its supposed to be */ ret = bq24190_read_mask(bdi, BQ24190_REG_VPRS, BQ24190_REG_VPRS_PN_MASK, BQ24190_REG_VPRS_PN_SHIFT, &v); if (ret < 0) goto out; if (v != bdi->model) { ret = -ENODEV; goto out; } ret = bq24190_register_reset(bdi); if (ret < 0) goto out; ret = bq24190_set_mode_host(bdi); out: pm_runtime_put_sync(bdi->dev); return ret; } #ifdef CONFIG_OF static int bq24190_setup_dt(struct bq24190_dev_info *bdi) { bdi->irq = irq_of_parse_and_map(bdi->dev->of_node, 0); if (bdi->irq <= 0) return -1; return 0; } #else static int bq24190_setup_dt(struct bq24190_dev_info *bdi) { return -1; } #endif static int bq24190_setup_pdata(struct bq24190_dev_info *bdi, struct bq24190_platform_data *pdata) { int ret; if (!gpio_is_valid(pdata->gpio_int)) return -1; ret = gpio_request(pdata->gpio_int, dev_name(bdi->dev)); if (ret < 0) return -1; ret = gpio_direction_input(pdata->gpio_int); if (ret < 0) goto out; bdi->irq = gpio_to_irq(pdata->gpio_int); if (!bdi->irq) goto out; bdi->gpio_int = pdata->gpio_int; return 0; out: gpio_free(pdata->gpio_int); return -1; } static int bq24190_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); struct device *dev = &client->dev; struct bq24190_platform_data *pdata = client->dev.platform_data; struct power_supply_config charger_cfg = {}, battery_cfg = {}; struct bq24190_dev_info *bdi; int ret; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { dev_err(dev, "No support for SMBUS_BYTE_DATA\n"); return -ENODEV; } bdi = devm_kzalloc(dev, sizeof(*bdi), GFP_KERNEL); if (!bdi) { dev_err(dev, "Can't alloc bdi struct\n"); return -ENOMEM; } bdi->client = client; bdi->dev = dev; bdi->model = id->driver_data; strncpy(bdi->model_name, id->name, I2C_NAME_SIZE); mutex_init(&bdi->f_reg_lock); bdi->first_time = true; bdi->charger_health_valid = false; bdi->battery_health_valid = false; bdi->battery_status_valid = false; i2c_set_clientdata(client, bdi); if (dev->of_node) ret = bq24190_setup_dt(bdi); else ret = bq24190_setup_pdata(bdi, pdata); if (ret) { dev_err(dev, "Can't get irq info\n"); return -EINVAL; } ret = devm_request_threaded_irq(dev, bdi->irq, NULL, bq24190_irq_handler_thread, IRQF_TRIGGER_RISING | IRQF_ONESHOT, "bq24190-charger", bdi); if (ret < 0) { dev_err(dev, "Can't set up irq handler\n"); goto out1; } pm_runtime_enable(dev); pm_runtime_resume(dev); ret = bq24190_hw_init(bdi); if (ret < 0) { dev_err(dev, "Hardware init failed\n"); goto out2; } charger_cfg.drv_data = bdi; charger_cfg.supplied_to = bq24190_charger_supplied_to; charger_cfg.num_supplicants = ARRAY_SIZE(bq24190_charger_supplied_to), bdi->charger = power_supply_register(dev, &bq24190_charger_desc, &charger_cfg); if (IS_ERR(bdi->charger)) { dev_err(dev, "Can't register charger\n"); ret = PTR_ERR(bdi->charger); goto out2; } battery_cfg.drv_data = bdi; bdi->battery = power_supply_register(dev, &bq24190_battery_desc, &battery_cfg); if (IS_ERR(bdi->battery)) { dev_err(dev, "Can't register battery\n"); ret = PTR_ERR(bdi->battery); goto out3; } ret = bq24190_sysfs_create_group(bdi); if (ret) { dev_err(dev, "Can't create sysfs entries\n"); goto out4; } return 0; out4: power_supply_unregister(bdi->battery); out3: power_supply_unregister(bdi->charger); out2: pm_runtime_disable(dev); out1: if (bdi->gpio_int) gpio_free(bdi->gpio_int); return ret; } static int bq24190_remove(struct i2c_client *client) { struct bq24190_dev_info *bdi = i2c_get_clientdata(client); pm_runtime_get_sync(bdi->dev); bq24190_register_reset(bdi); pm_runtime_put_sync(bdi->dev); bq24190_sysfs_remove_group(bdi); power_supply_unregister(bdi->battery); power_supply_unregister(bdi->charger); pm_runtime_disable(bdi->dev); if (bdi->gpio_int) gpio_free(bdi->gpio_int); return 0; } #ifdef CONFIG_PM_SLEEP static int bq24190_pm_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct bq24190_dev_info *bdi = i2c_get_clientdata(client); pm_runtime_get_sync(bdi->dev); bq24190_register_reset(bdi); pm_runtime_put_sync(bdi->dev); return 0; } static int bq24190_pm_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct bq24190_dev_info *bdi = i2c_get_clientdata(client); bdi->charger_health_valid = false; bdi->battery_health_valid = false; bdi->battery_status_valid = false; pm_runtime_get_sync(bdi->dev); bq24190_register_reset(bdi); pm_runtime_put_sync(bdi->dev); /* Things may have changed while suspended so alert upper layer */ power_supply_changed(bdi->charger); power_supply_changed(bdi->battery); return 0; } #endif static SIMPLE_DEV_PM_OPS(bq24190_pm_ops, bq24190_pm_suspend, bq24190_pm_resume); /* * Only support the bq24190 right now. The bq24192, bq24192i, and bq24193 * are similar but not identical so the driver needs to be extended to * support them. */ static const struct i2c_device_id bq24190_i2c_ids[] = { { "bq24190", BQ24190_REG_VPRS_PN_24190 }, { }, }; MODULE_DEVICE_TABLE(i2c, bq24190_i2c_ids); #ifdef CONFIG_OF static const struct of_device_id bq24190_of_match[] = { { .compatible = "ti,bq24190", }, { }, }; MODULE_DEVICE_TABLE(of, bq24190_of_match); #else static const struct of_device_id bq24190_of_match[] = { { }, }; #endif static struct i2c_driver bq24190_driver = { .probe = bq24190_probe, .remove = bq24190_remove, .id_table = bq24190_i2c_ids, .driver = { .name = "bq24190-charger", .pm = &bq24190_pm_ops, .of_match_table = of_match_ptr(bq24190_of_match), }, }; module_i2c_driver(bq24190_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Mark A. Greer "); MODULE_ALIAS("i2c:bq24190-charger"); MODULE_DESCRIPTION("TI BQ24190 Charger Driver");