| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mark A. Greer | 4841 | 57.80% | 1 | 1.85% |
| Liam Breck | 1367 | 16.32% | 14 | 25.93% |
| Hans de Goede | 1206 | 14.40% | 14 | 25.93% |
| Tony Lindgren | 569 | 6.79% | 2 | 3.70% |
| Brian Masney | 161 | 1.92% | 1 | 1.85% |
| Krzysztof Kozlowski | 119 | 1.42% | 2 | 3.70% |
| Jonathan Marek | 28 | 0.33% | 2 | 3.70% |
| Sebastian Reichel | 21 | 0.25% | 1 | 1.85% |
| Chi Minghao | 12 | 0.14% | 1 | 1.85% |
| Heiko Stübner | 12 | 0.14% | 1 | 1.85% |
| Javier Martinez Canillas | 7 | 0.08% | 1 | 1.85% |
| Lad Prabhakar | 4 | 0.05% | 1 | 1.85% |
| Pavel Machek | 4 | 0.05% | 1 | 1.85% |
| Andy Shevchenko | 4 | 0.05% | 1 | 1.85% |
| Arnd Bergmann | 4 | 0.05% | 1 | 1.85% |
| Anton Vorontsov | 4 | 0.05% | 1 | 1.85% |
| Linus Walleij | 3 | 0.04% | 1 | 1.85% |
| Wolfram Sang | 2 | 0.02% | 2 | 3.70% |
| Thomas Gleixner | 2 | 0.02% | 1 | 1.85% |
| Uwe Kleine-König | 1 | 0.01% | 1 | 1.85% |
| Colin Ian King | 1 | 0.01% | 1 | 1.85% |
| Zheng Yongjun | 1 | 0.01% | 1 | 1.85% |
| Thomas Elste | 1 | 0.01% | 1 | 1.85% |
| Andreas Dannenberg | 1 | 0.01% | 1 | 1.85% |
| Total | 8375 | 54 |
// SPDX-License-Identifier: GPL-2.0-only /* * Driver for the TI bq24190 battery charger. * * Author: Mark A. Greer <mgreer@animalcreek.com> */ #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/pm_runtime.h> #include <linux/power_supply.h> #include <linux/power/bq24190_charger.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/workqueue.h> #include <linux/i2c.h> #include <linux/extcon-provider.h> #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_CHG_CONFIG_DISABLE 0x0 #define BQ24190_REG_POC_CHG_CONFIG_CHARGE 0x1 #define BQ24190_REG_POC_CHG_CONFIG_OTG 0x2 #define BQ24190_REG_POC_CHG_CONFIG_OTG_ALT 0x3 #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_SYS_MIN_MIN 3000 #define BQ24190_REG_POC_SYS_MIN_MAX 3700 #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_IPRECHG_MIN 128 #define BQ24190_REG_PCTCC_IPRECHG_MAX 2048 #define BQ24190_REG_PCTCC_ITERM_MASK (BIT(3) | BIT(2) | BIT(1) | \ BIT(0)) #define BQ24190_REG_PCTCC_ITERM_SHIFT 0 #define BQ24190_REG_PCTCC_ITERM_MIN 128 #define BQ24190_REG_PCTCC_ITERM_MAX 2048 #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, 24196 */ #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. */ struct bq24190_dev_info { struct i2c_client *client; struct device *dev; struct extcon_dev *edev; struct power_supply *charger; struct power_supply *battery; struct delayed_work input_current_limit_work; char model_name[I2C_NAME_SIZE]; bool initialized; bool irq_event; bool otg_vbus_enabled; int charge_type; u16 sys_min; u16 iprechg; u16 iterm; u32 ichg; u32 ichg_max; u32 vreg; u32 vreg_max; struct mutex f_reg_lock; u8 f_reg; u8 ss_reg; u8 watchdog; }; static int bq24190_charger_set_charge_type(struct bq24190_dev_info *bdi, const union power_supply_propval *val); static const unsigned int bq24190_usb_extcon_cable[] = { EXTCON_USB, EXTCON_NONE, }; /* * 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. */ /* REG00[2:0] (IINLIM) in uAh */ static const int bq24190_isc_iinlim_values[] = { 100000, 150000, 500000, 900000, 1200000, 1500000, 2000000, 3000000 }; /* 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 Celsius */ 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]; ATTRIBUTE_GROUPS(bq24190_sysfs); 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; ssize_t count; int ret; u8 v; info = bq24190_sysfs_field_lookup(attr->attr.name); if (!info) return -EINVAL; ret = pm_runtime_resume_and_get(bdi->dev); if (ret < 0) return ret; ret = bq24190_read_mask(bdi, info->reg, info->mask, info->shift, &v); if (ret) count = ret; else count = scnprintf(buf, PAGE_SIZE, "%hhx\n", v); pm_runtime_mark_last_busy(bdi->dev); pm_runtime_put_autosuspend(bdi->dev); return count; } 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 = pm_runtime_resume_and_get(bdi->dev); if (ret < 0) return ret; ret = bq24190_write_mask(bdi, info->reg, info->mask, info->shift, v); if (ret) count = ret; pm_runtime_mark_last_busy(bdi->dev); pm_runtime_put_autosuspend(bdi->dev); return count; } #endif static int bq24190_set_otg_vbus(struct bq24190_dev_info *bdi, bool enable) { union power_supply_propval val = { .intval = bdi->charge_type }; int ret; ret = pm_runtime_resume_and_get(bdi->dev); if (ret < 0) { dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret); return ret; } bdi->otg_vbus_enabled = enable; if (enable) ret = bq24190_write_mask(bdi, BQ24190_REG_POC, BQ24190_REG_POC_CHG_CONFIG_MASK, BQ24190_REG_POC_CHG_CONFIG_SHIFT, BQ24190_REG_POC_CHG_CONFIG_OTG); else ret = bq24190_charger_set_charge_type(bdi, &val); pm_runtime_mark_last_busy(bdi->dev); pm_runtime_put_autosuspend(bdi->dev); return ret; } #ifdef CONFIG_REGULATOR static int bq24190_vbus_enable(struct regulator_dev *dev) { return bq24190_set_otg_vbus(rdev_get_drvdata(dev), true); } static int bq24190_vbus_disable(struct regulator_dev *dev) { return bq24190_set_otg_vbus(rdev_get_drvdata(dev), false); } static int bq24190_vbus_is_enabled(struct regulator_dev *dev) { struct bq24190_dev_info *bdi = rdev_get_drvdata(dev); int ret; u8 val; ret = pm_runtime_resume_and_get(bdi->dev); if (ret < 0) { dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret); return ret; } ret = bq24190_read_mask(bdi, BQ24190_REG_POC, BQ24190_REG_POC_CHG_CONFIG_MASK, BQ24190_REG_POC_CHG_CONFIG_SHIFT, &val); pm_runtime_mark_last_busy(bdi->dev); pm_runtime_put_autosuspend(bdi->dev); if (ret) return ret; bdi->otg_vbus_enabled = (val == BQ24190_REG_POC_CHG_CONFIG_OTG || val == BQ24190_REG_POC_CHG_CONFIG_OTG_ALT); return bdi->otg_vbus_enabled; } static const struct regulator_ops bq24190_vbus_ops = { .enable = bq24190_vbus_enable, .disable = bq24190_vbus_disable, .is_enabled = bq24190_vbus_is_enabled, }; static const struct regulator_desc bq24190_vbus_desc = { .name = "usb_otg_vbus", .of_match = "usb-otg-vbus", .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .ops = &bq24190_vbus_ops, .fixed_uV = 5000000, .n_voltages = 1, }; static const struct regulator_init_data bq24190_vbus_init_data = { .constraints = { .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, }; static int bq24190_register_vbus_regulator(struct bq24190_dev_info *bdi) { struct bq24190_platform_data *pdata = bdi->dev->platform_data; struct regulator_config cfg = { }; struct regulator_dev *reg; int ret = 0; cfg.dev = bdi->dev; if (pdata && pdata->regulator_init_data) cfg.init_data = pdata->regulator_init_data; else cfg.init_data = &bq24190_vbus_init_data; cfg.driver_data = bdi; reg = devm_regulator_register(bdi->dev, &bq24190_vbus_desc, &cfg); if (IS_ERR(reg)) { ret = PTR_ERR(reg); dev_err(bdi->dev, "Can't register regulator: %d\n", ret); } return ret; } #else static int bq24190_register_vbus_regulator(struct bq24190_dev_info *bdi) { return 0; } #endif static int bq24190_set_config(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); /* * 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. */ v &= ~BQ24190_REG_CTTC_WATCHDOG_MASK; ret = bq24190_write(bdi, BQ24190_REG_CTTC, v); if (ret < 0) return ret; if (bdi->sys_min) { v = bdi->sys_min / 100 - 30; // manual section 9.5.1.2, table 9 ret = bq24190_write_mask(bdi, BQ24190_REG_POC, BQ24190_REG_POC_SYS_MIN_MASK, BQ24190_REG_POC_SYS_MIN_SHIFT, v); if (ret < 0) return ret; } if (bdi->iprechg) { v = bdi->iprechg / 128 - 1; // manual section 9.5.1.4, table 11 ret = bq24190_write_mask(bdi, BQ24190_REG_PCTCC, BQ24190_REG_PCTCC_IPRECHG_MASK, BQ24190_REG_PCTCC_IPRECHG_SHIFT, v); if (ret < 0) return ret; } if (bdi->iterm) { v = bdi->iterm / 128 - 1; // manual section 9.5.1.4, table 11 ret = bq24190_write_mask(bdi, BQ24190_REG_PCTCC, BQ24190_REG_PCTCC_ITERM_MASK, BQ24190_REG_PCTCC_ITERM_SHIFT, v); if (ret < 0) return ret; } if (bdi->ichg) { ret = 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), bdi->ichg); if (ret < 0) return ret; } if (bdi->vreg) { ret = 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), bdi->vreg); if (ret < 0) return ret; } return 0; } static int bq24190_register_reset(struct bq24190_dev_info *bdi) { int ret, limit = 100; u8 v; /* * This prop. can be passed on device instantiation from platform code: * struct property_entry pe[] = * { PROPERTY_ENTRY_BOOL("disable-reset"), ... }; * struct i2c_board_info bi = * { .type = "bq24190", .addr = 0x6b, .properties = pe, .irq = irq }; * struct i2c_adapter ad = { ... }; * i2c_add_adapter(&ad); * i2c_new_client_device(&ad, &bi); */ if (device_property_read_bool(bdi->dev, "disable-reset")) return 0; /* 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 == 0) return 0; usleep_range(100, 200); } while (--limit); return -EIO; } /* 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; } bdi->charge_type = val->intval; /* * If the 5V Vbus boost regulator is enabled delay setting * the charge-type until its gets disabled. */ if (bdi->otg_vbus_enabled) return 0; 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; mutex_lock(&bdi->f_reg_lock); v = bdi->f_reg; mutex_unlock(&bdi->f_reg_lock); if (v & BQ24190_REG_F_NTC_FAULT_MASK) { switch (v >> BQ24190_REG_F_NTC_FAULT_SHIFT & 0x7) { 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; } } else if (v & BQ24190_REG_F_BAT_FAULT_MASK) { health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; } else if (v & BQ24190_REG_F_CHRG_FAULT_MASK) { switch (v >> BQ24190_REG_F_CHRG_FAULT_SHIFT & 0x3) { case 0x1: /* Input Fault (VBUS OVP or VBAT<VBUS<3.8V) */ /* * This could be over-voltage or under-voltage * and there's no way to tell which. Instead * of looking foolish and returning 'OVERVOLTAGE' * when its really under-voltage, just return * 'UNSPEC_FAILURE'. */ health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; break; case 0x2: /* Thermal Shutdown */ health = POWER_SUPPLY_HEALTH_OVERHEAT; break; case 0x3: /* Charge Safety Timer Expiration */ health = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; break; default: /* prevent compiler warning */ health = -1; } } else 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 { health = POWER_SUPPLY_HEALTH_GOOD; } val->intval = health; return 0; } static int bq24190_charger_get_online(struct bq24190_dev_info *bdi, union power_supply_propval *val) { u8 pg_stat, batfet_disable; int ret; ret = bq24190_read_mask(bdi, BQ24190_REG_SS, BQ24190_REG_SS_PG_STAT_MASK, BQ24190_REG_SS_PG_STAT_SHIFT, &pg_stat); if (ret < 0) return 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 = pg_stat && !batfet_disable; return 0; } static int bq24190_battery_set_online(struct bq24190_dev_info *bdi, const union power_supply_propval *val); static int bq24190_battery_get_status(struct bq24190_dev_info *bdi, union power_supply_propval *val); static int bq24190_battery_get_temp_alert_max(struct bq24190_dev_info *bdi, union power_supply_propval *val); static int bq24190_battery_set_temp_alert_max(struct bq24190_dev_info *bdi, const union power_supply_propval *val); static int bq24190_charger_set_online(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { return bq24190_battery_set_online(bdi, val); } static int bq24190_charger_get_status(struct bq24190_dev_info *bdi, union power_supply_propval *val) { return bq24190_battery_get_status(bdi, val); } static int bq24190_charger_get_temp_alert_max(struct bq24190_dev_info *bdi, union power_supply_propval *val) { return bq24190_battery_get_temp_alert_max(bdi, val); } static int bq24190_charger_set_temp_alert_max(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { return bq24190_battery_set_temp_alert_max(bdi, val); } static int bq24190_charger_get_precharge(struct bq24190_dev_info *bdi, union power_supply_propval *val) { u8 v; int ret; ret = bq24190_read_mask(bdi, BQ24190_REG_PCTCC, BQ24190_REG_PCTCC_IPRECHG_MASK, BQ24190_REG_PCTCC_IPRECHG_SHIFT, &v); if (ret < 0) return ret; val->intval = ++v * 128 * 1000; return 0; } static int bq24190_charger_get_charge_term(struct bq24190_dev_info *bdi, union power_supply_propval *val) { u8 v; int ret; ret = bq24190_read_mask(bdi, BQ24190_REG_PCTCC, BQ24190_REG_PCTCC_ITERM_MASK, BQ24190_REG_PCTCC_ITERM_SHIFT, &v); if (ret < 0) return ret; val->intval = ++v * 128 * 1000; 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_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; if (curr > bdi->ichg_max) return -EINVAL; ret = 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); if (ret < 0) return ret; bdi->ichg = curr; return 0; } 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_set_voltage(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { int ret; if (val->intval > bdi->vreg_max) return -EINVAL; ret = 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); if (ret < 0) return ret; bdi->vreg = val->intval; return 0; } static int bq24190_charger_get_iinlimit(struct bq24190_dev_info *bdi, union power_supply_propval *val) { int iinlimit, ret; ret = bq24190_get_field_val(bdi, BQ24190_REG_ISC, BQ24190_REG_ISC_IINLIM_MASK, BQ24190_REG_ISC_IINLIM_SHIFT, bq24190_isc_iinlim_values, ARRAY_SIZE(bq24190_isc_iinlim_values), &iinlimit); if (ret < 0) return ret; val->intval = iinlimit; return 0; } static int bq24190_charger_set_iinlimit(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { return bq24190_set_field_val(bdi, BQ24190_REG_ISC, BQ24190_REG_ISC_IINLIM_MASK, BQ24190_REG_ISC_IINLIM_SHIFT, bq24190_isc_iinlim_values, ARRAY_SIZE(bq24190_isc_iinlim_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); ret = pm_runtime_resume_and_get(bdi->dev); if (ret < 0) return ret; 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_STATUS: ret = bq24190_charger_get_status(bdi, val); break; case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: ret = bq24190_charger_get_temp_alert_max(bdi, val); break; case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: ret = bq24190_charger_get_precharge(bdi, val); break; case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: ret = bq24190_charger_get_charge_term(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: val->intval = bdi->ichg_max; ret = 0; break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: ret = bq24190_charger_get_voltage(bdi, val); break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: val->intval = bdi->vreg_max; ret = 0; break; case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: ret = bq24190_charger_get_iinlimit(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_mark_last_busy(bdi->dev); pm_runtime_put_autosuspend(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); ret = pm_runtime_resume_and_get(bdi->dev); if (ret < 0) return ret; switch (psp) { case POWER_SUPPLY_PROP_ONLINE: ret = bq24190_charger_set_online(bdi, val); break; case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: ret = bq24190_charger_set_temp_alert_max(bdi, val); break; 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; case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: ret = bq24190_charger_set_iinlimit(bdi, val); break; default: ret = -EINVAL; } pm_runtime_mark_last_busy(bdi->dev); pm_runtime_put_autosuspend(bdi->dev); return ret; } static int bq24190_charger_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { switch (psp) { case POWER_SUPPLY_PROP_ONLINE: case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: case POWER_SUPPLY_PROP_CHARGE_TYPE: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: return 1; default: return 0; } } static void bq24190_input_current_limit_work(struct work_struct *work) { struct bq24190_dev_info *bdi = container_of(work, struct bq24190_dev_info, input_current_limit_work.work); union power_supply_propval val; int ret; ret = power_supply_get_property_from_supplier(bdi->charger, POWER_SUPPLY_PROP_CURRENT_MAX, &val); if (ret) return; bq24190_charger_set_property(bdi->charger, POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, &val); } /* Sync the input-current-limit with our parent supply (if we have one) */ static void bq24190_charger_external_power_changed(struct power_supply *psy) { struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); /* * The Power-Good detection may take up to 220ms, sometimes * the external charger detection is quicker, and the bq24190 will * reset to iinlim based on its own charger detection (which is not * hooked up when using external charger detection) resulting in a * too low default 500mA iinlim. Delay setting the input-current-limit * for 300ms to avoid this. */ queue_delayed_work(system_wq, &bdi->input_current_limit_work, msecs_to_jiffies(300)); } static enum power_supply_property bq24190_charger_properties[] = { POWER_SUPPLY_PROP_CHARGE_TYPE, POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_TEMP_ALERT_MAX, POWER_SUPPLY_PROP_PRECHARGE_CURRENT, POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, 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_INPUT_CURRENT_LIMIT, 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, .external_power_changed = bq24190_charger_external_power_changed, }; /* 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); chrg_fault = bdi->f_reg; mutex_unlock(&bdi->f_reg_lock); 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; mutex_lock(&bdi->f_reg_lock); v = bdi->f_reg; mutex_unlock(&bdi->f_reg_lock); 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_warn(bdi->dev, "warning: /sys/class/power_supply/bq24190-battery is deprecated\n"); dev_dbg(bdi->dev, "prop: %d\n", psp); ret = pm_runtime_resume_and_get(bdi->dev); if (ret < 0) return ret; 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_mark_last_busy(bdi->dev); pm_runtime_put_autosuspend(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_warn(bdi->dev, "warning: /sys/class/power_supply/bq24190-battery is deprecated\n"); dev_dbg(bdi->dev, "prop: %d\n", psp); ret = pm_runtime_resume_and_get(bdi->dev); if (ret < 0) return ret; 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_mark_last_busy(bdi->dev); pm_runtime_put_autosuspend(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 int bq24190_configure_usb_otg(struct bq24190_dev_info *bdi, u8 ss_reg) { bool otg_enabled; int ret; otg_enabled = !!(ss_reg & BQ24190_REG_SS_VBUS_STAT_MASK); ret = extcon_set_state_sync(bdi->edev, EXTCON_USB, otg_enabled); if (ret < 0) dev_err(bdi->dev, "Can't set extcon state to %d: %d\n", otg_enabled, ret); return ret; } static void bq24190_check_status(struct bq24190_dev_info *bdi) { const u8 battery_mask_ss = BQ24190_REG_SS_CHRG_STAT_MASK; const u8 battery_mask_f = BQ24190_REG_F_BAT_FAULT_MASK | BQ24190_REG_F_NTC_FAULT_MASK; bool alert_charger = false, alert_battery = false; u8 ss_reg = 0, f_reg = 0; int i, ret; ret = bq24190_read(bdi, BQ24190_REG_SS, &ss_reg); if (ret < 0) { dev_err(bdi->dev, "Can't read SS reg: %d\n", ret); return; } i = 0; do { ret = bq24190_read(bdi, BQ24190_REG_F, &f_reg); if (ret < 0) { dev_err(bdi->dev, "Can't read F reg: %d\n", ret); return; } } while (f_reg && ++i < 2); /* ignore over/under voltage fault after disconnect */ if (f_reg == (1 << BQ24190_REG_F_CHRG_FAULT_SHIFT) && !(ss_reg & BQ24190_REG_SS_PG_STAT_MASK)) f_reg = 0; if (f_reg != bdi->f_reg) { dev_warn(bdi->dev, "Fault: boost %d, charge %d, battery %d, ntc %d\n", !!(f_reg & BQ24190_REG_F_BOOST_FAULT_MASK), !!(f_reg & BQ24190_REG_F_CHRG_FAULT_MASK), !!(f_reg & BQ24190_REG_F_BAT_FAULT_MASK), !!(f_reg & BQ24190_REG_F_NTC_FAULT_MASK)); mutex_lock(&bdi->f_reg_lock); if ((bdi->f_reg & battery_mask_f) != (f_reg & battery_mask_f)) alert_battery = true; if ((bdi->f_reg & ~battery_mask_f) != (f_reg & ~battery_mask_f)) alert_charger = true; bdi->f_reg = f_reg; mutex_unlock(&bdi->f_reg_lock); } 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); } if ((bdi->ss_reg & battery_mask_ss) != (ss_reg & battery_mask_ss)) alert_battery = true; if ((bdi->ss_reg & ~battery_mask_ss) != (ss_reg & ~battery_mask_ss)) alert_charger = true; bdi->ss_reg = ss_reg; } if (alert_charger || alert_battery) { power_supply_changed(bdi->charger); bq24190_configure_usb_otg(bdi, ss_reg); } if (alert_battery && bdi->battery) power_supply_changed(bdi->battery); dev_dbg(bdi->dev, "ss_reg: 0x%02x, f_reg: 0x%02x\n", ss_reg, f_reg); } static irqreturn_t bq24190_irq_handler_thread(int irq, void *data) { struct bq24190_dev_info *bdi = data; int error; bdi->irq_event = true; error = pm_runtime_resume_and_get(bdi->dev); if (error < 0) { dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); return IRQ_NONE; } bq24190_check_status(bdi); pm_runtime_mark_last_busy(bdi->dev); pm_runtime_put_autosuspend(bdi->dev); bdi->irq_event = false; return IRQ_HANDLED; } static int bq24190_hw_init(struct bq24190_dev_info *bdi) { u8 v; int ret; /* 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) return ret; switch (v) { case BQ24190_REG_VPRS_PN_24190: case BQ24190_REG_VPRS_PN_24192: case BQ24190_REG_VPRS_PN_24192I: break; default: dev_err(bdi->dev, "Error unknown model: 0x%02x\n", v); return -ENODEV; } ret = bq24190_register_reset(bdi); if (ret < 0) return ret; ret = bq24190_set_config(bdi); if (ret < 0) return ret; return bq24190_read(bdi, BQ24190_REG_SS, &bdi->ss_reg); } static int bq24190_get_config(struct bq24190_dev_info *bdi) { const char * const s = "ti,system-minimum-microvolt"; struct power_supply_battery_info *info; int v, idx; idx = ARRAY_SIZE(bq24190_ccc_ichg_values) - 1; bdi->ichg_max = bq24190_ccc_ichg_values[idx]; idx = ARRAY_SIZE(bq24190_cvc_vreg_values) - 1; bdi->vreg_max = bq24190_cvc_vreg_values[idx]; if (device_property_read_u32(bdi->dev, s, &v) == 0) { v /= 1000; if (v >= BQ24190_REG_POC_SYS_MIN_MIN && v <= BQ24190_REG_POC_SYS_MIN_MAX) bdi->sys_min = v; else dev_warn(bdi->dev, "invalid value for %s: %u\n", s, v); } if (!power_supply_get_battery_info(bdi->charger, &info)) { v = info->precharge_current_ua / 1000; if (v >= BQ24190_REG_PCTCC_IPRECHG_MIN && v <= BQ24190_REG_PCTCC_IPRECHG_MAX) bdi->iprechg = v; else dev_warn(bdi->dev, "invalid value for battery:precharge-current-microamp: %d\n", v); v = info->charge_term_current_ua / 1000; if (v >= BQ24190_REG_PCTCC_ITERM_MIN && v <= BQ24190_REG_PCTCC_ITERM_MAX) bdi->iterm = v; else dev_warn(bdi->dev, "invalid value for battery:charge-term-current-microamp: %d\n", v); /* These are optional, so no warning when not set */ v = info->constant_charge_current_max_ua; if (v >= bq24190_ccc_ichg_values[0] && v <= bdi->ichg_max) bdi->ichg = bdi->ichg_max = v; v = info->constant_charge_voltage_max_uv; if (v >= bq24190_cvc_vreg_values[0] && v <= bdi->vreg_max) bdi->vreg = bdi->vreg_max = v; } return 0; } static int bq24190_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct i2c_adapter *adapter = client->adapter; struct device *dev = &client->dev; 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; strncpy(bdi->model_name, id->name, I2C_NAME_SIZE); mutex_init(&bdi->f_reg_lock); bdi->charge_type = POWER_SUPPLY_CHARGE_TYPE_FAST; bdi->f_reg = 0; bdi->ss_reg = BQ24190_REG_SS_VBUS_STAT_MASK; /* impossible state */ INIT_DELAYED_WORK(&bdi->input_current_limit_work, bq24190_input_current_limit_work); i2c_set_clientdata(client, bdi); if (client->irq <= 0) { dev_err(dev, "Can't get irq info\n"); return -EINVAL; } bdi->edev = devm_extcon_dev_allocate(dev, bq24190_usb_extcon_cable); if (IS_ERR(bdi->edev)) return PTR_ERR(bdi->edev); ret = devm_extcon_dev_register(dev, bdi->edev); if (ret < 0) return ret; pm_runtime_enable(dev); pm_runtime_use_autosuspend(dev); pm_runtime_set_autosuspend_delay(dev, 600); ret = pm_runtime_get_sync(dev); if (ret < 0) { dev_err(dev, "pm_runtime_get failed: %i\n", ret); goto out_pmrt; } #ifdef CONFIG_SYSFS bq24190_sysfs_init_attrs(); charger_cfg.attr_grp = bq24190_sysfs_groups; #endif charger_cfg.drv_data = bdi; charger_cfg.of_node = dev->of_node; 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 out_pmrt; } /* the battery class is deprecated and will be removed. */ /* in the interim, this property hides it. */ if (!device_property_read_bool(dev, "omit-battery-class")) { 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 out_charger; } } ret = bq24190_get_config(bdi); if (ret < 0) { dev_err(dev, "Can't get devicetree config\n"); goto out_charger; } ret = bq24190_hw_init(bdi); if (ret < 0) { dev_err(dev, "Hardware init failed\n"); goto out_charger; } ret = bq24190_configure_usb_otg(bdi, bdi->ss_reg); if (ret < 0) goto out_charger; bdi->initialized = true; ret = devm_request_threaded_irq(dev, client->irq, NULL, bq24190_irq_handler_thread, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "bq24190-charger", bdi); if (ret < 0) { dev_err(dev, "Can't set up irq handler\n"); goto out_charger; } ret = bq24190_register_vbus_regulator(bdi); if (ret < 0) goto out_charger; enable_irq_wake(client->irq); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); return 0; out_charger: if (!IS_ERR_OR_NULL(bdi->battery)) power_supply_unregister(bdi->battery); power_supply_unregister(bdi->charger); out_pmrt: pm_runtime_put_sync(dev); pm_runtime_dont_use_autosuspend(dev); pm_runtime_disable(dev); return ret; } static void bq24190_remove(struct i2c_client *client) { struct bq24190_dev_info *bdi = i2c_get_clientdata(client); int error; error = pm_runtime_resume_and_get(bdi->dev); if (error < 0) dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); bq24190_register_reset(bdi); if (bdi->battery) power_supply_unregister(bdi->battery); power_supply_unregister(bdi->charger); if (error >= 0) pm_runtime_put_sync(bdi->dev); pm_runtime_dont_use_autosuspend(bdi->dev); pm_runtime_disable(bdi->dev); } static void bq24190_shutdown(struct i2c_client *client) { struct bq24190_dev_info *bdi = i2c_get_clientdata(client); /* Turn off 5V boost regulator on shutdown */ bq24190_set_otg_vbus(bdi, false); } static __maybe_unused int bq24190_runtime_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct bq24190_dev_info *bdi = i2c_get_clientdata(client); if (!bdi->initialized) return 0; dev_dbg(bdi->dev, "%s\n", __func__); return 0; } static __maybe_unused int bq24190_runtime_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct bq24190_dev_info *bdi = i2c_get_clientdata(client); if (!bdi->initialized) return 0; if (!bdi->irq_event) { dev_dbg(bdi->dev, "checking events on possible wakeirq\n"); bq24190_check_status(bdi); } return 0; } static __maybe_unused int bq24190_pm_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct bq24190_dev_info *bdi = i2c_get_clientdata(client); int error; error = pm_runtime_resume_and_get(bdi->dev); if (error < 0) dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); bq24190_register_reset(bdi); if (error >= 0) { pm_runtime_mark_last_busy(bdi->dev); pm_runtime_put_autosuspend(bdi->dev); } return 0; } static __maybe_unused int bq24190_pm_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct bq24190_dev_info *bdi = i2c_get_clientdata(client); int error; bdi->f_reg = 0; bdi->ss_reg = BQ24190_REG_SS_VBUS_STAT_MASK; /* impossible state */ error = pm_runtime_resume_and_get(bdi->dev); if (error < 0) dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); bq24190_register_reset(bdi); bq24190_set_config(bdi); bq24190_read(bdi, BQ24190_REG_SS, &bdi->ss_reg); if (error >= 0) { pm_runtime_mark_last_busy(bdi->dev); pm_runtime_put_autosuspend(bdi->dev); } /* Things may have changed while suspended so alert upper layer */ power_supply_changed(bdi->charger); if (bdi->battery) power_supply_changed(bdi->battery); return 0; } static const struct dev_pm_ops bq24190_pm_ops = { SET_RUNTIME_PM_OPS(bq24190_runtime_suspend, bq24190_runtime_resume, NULL) SET_SYSTEM_SLEEP_PM_OPS(bq24190_pm_suspend, bq24190_pm_resume) }; static const struct i2c_device_id bq24190_i2c_ids[] = { { "bq24190" }, { "bq24192" }, { "bq24192i" }, { "bq24196" }, { }, }; MODULE_DEVICE_TABLE(i2c, bq24190_i2c_ids); static const struct of_device_id bq24190_of_match[] = { { .compatible = "ti,bq24190", }, { .compatible = "ti,bq24192", }, { .compatible = "ti,bq24192i", }, { .compatible = "ti,bq24196", }, { }, }; MODULE_DEVICE_TABLE(of, bq24190_of_match); static struct i2c_driver bq24190_driver = { .probe = bq24190_probe, .remove = bq24190_remove, .shutdown = bq24190_shutdown, .id_table = bq24190_i2c_ids, .driver = { .name = "bq24190-charger", .pm = &bq24190_pm_ops, .of_match_table = bq24190_of_match, }, }; module_i2c_driver(bq24190_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Mark A. Greer <mgreer@animalcreek.com>"); MODULE_DESCRIPTION("TI BQ24190 Charger Driver");
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