diff options
Diffstat (limited to 'driver')
| -rw-r--r-- | driver/charger/bq25710.c | 54 | ||||
| -rw-r--r-- | driver/charger/bq25710.h | 12 |
2 files changed, 59 insertions, 7 deletions
diff --git a/driver/charger/bq25710.c b/driver/charger/bq25710.c index 1d89946401..5deb59328b 100644 --- a/driver/charger/bq25710.c +++ b/driver/charger/bq25710.c @@ -142,17 +142,58 @@ static int bq25710_adc_start(int adc_en_mask) } #endif -/* Disbale VDPM prochot profile at initialization */ -static void bq25710_disable_prochot_vdpm(void) +static void bq25710_init(void) { int reg; + int vsys; + int rv; + + /* + * Reset registers to their default settings. There is no reset pin for + * this chip so without a full power cycle, some registers may not be at + * their default values. Note, need to save the POR value of + * MIN_SYSTEM_VOLTAGE register prior to setting the reset so that the + * correct value is preserved. + */ + rv = raw_read16(BQ25710_REG_MIN_SYSTEM_VOLTAGE, &vsys); + rv |= raw_read16(BQ25710_REG_CHARGE_OPTION_3, ®); + if (!rv) { + reg |= BQ25710_CHARGE_OPTION_3_RESET_REG; + /* Set all registers to default values */ + raw_write16(BQ25710_REG_CHARGE_OPTION_3, reg); + /* Restore VSYS_MIN voltage to POR reset value */ + raw_write16(BQ25710_REG_MIN_SYSTEM_VOLTAGE, vsys); + } if (!raw_read16(BQ25710_REG_PROCHOT_OPTION_1, ®)) { - raw_write16(BQ25710_REG_PROCHOT_OPTION_1, - (reg & ~BQ25710_PROCHOT_PROFILE_VDPM)); + /* Disbale VDPM prochot profile at initialization */ + reg &= ~BQ25710_PROCHOT_PROFILE_VDPM; + /* + * Enable PROCHOT to be asserted with VSYS min detection. Note + * that when no battery is present, then VSYS will be set to the + * value in register 0x3E (MinSysVoltage) which means that when + * no battery is present prochot will continuosly be asserted. + */ + reg |= BQ25710_PROCHOT_PROFILE_VSYS; + raw_write16(BQ25710_REG_PROCHOT_OPTION_1, reg); + } + + /* Reduce ILIM from default of 150% to 105% */ + if (!raw_read16(BQ25710_REG_PROCHOT_OPTION_0, ®)) { + reg &= ~BQ25710_PROCHOT0_ILIM_VTH_MASK; + raw_write16(BQ25710_REG_PROCHOT_OPTION_0, reg); + } + + /* + * Reduce peak power mode overload and relax cycle time from default 20 + * msec to the minimum of 5 msec. + */ + if (!raw_read16(BQ25710_REG_CHARGE_OPTION_2, ®)) { + reg &= ~BQ25710_CHARGE_OPTION_2_TMAX_MASK; + raw_write16(BQ25710_REG_CHARGE_OPTION_2, reg); } } -DECLARE_HOOK(HOOK_INIT, bq25710_disable_prochot_vdpm, HOOK_PRIO_INIT_I2C + 1); +DECLARE_HOOK(HOOK_INIT, bq25710_init, HOOK_PRIO_INIT_I2C + 1); /* Charger interfaces */ const struct charger_info *charger_get_info(void) @@ -171,8 +212,7 @@ int charger_post_init(void) * discharge on AC = disabled */ - /* Set charger input current limit */ - return charger_set_input_current(CONFIG_CHARGER_INPUT_CURRENT); + return EC_SUCCESS; } int charger_get_status(int *status) diff --git a/driver/charger/bq25710.h b/driver/charger/bq25710.h index 73d7545c06..3b31c88bdb 100644 --- a/driver/charger/bq25710.h +++ b/driver/charger/bq25710.h @@ -41,13 +41,19 @@ /* ChargeOption0 Register */ #define BQ25710_CHARGE_OPTION_0_LOW_POWER_MODE BIT(15) +#define BQ25710_CHARGE_OPTION_0_IDPM_AUTO_DIS BIT(12) #define BQ25710_CHARGE_OPTION_0_EN_LEARN BIT(5) +#define BQ25710_CHARGE_OPTION_0_EN_IDPM BIT(1) #define BQ25710_CHARGE_OPTION_0_CHRG_INHIBIT BIT(0) /* ChargeOption2 Register */ #define BQ25710_CHARGE_OPTION_2_EN_EXTILIM BIT(7) +#define BQ25710_CHARGE_OPTION_2_TMAX_SHIFT 8 +#define BQ25710_CHARGE_OPTION_2_TMAX_MASK (0x3 << \ + BQ25710_CHARGE_OPTION_2_TMAX_SHIFT) /* ChargeOption3 Register */ +#define BQ25710_CHARGE_OPTION_3_RESET_REG BIT(14) #define BQ25710_CHARGE_OPTION_3_EN_ICO_MODE BIT(11) /* ChargeStatus Register */ @@ -72,7 +78,13 @@ #define BQ25710_ADC_IIN_STEP_MA 50 #define BQ25710_ADC_IIN_STEP_BIT_OFFSET 8 +/* ProchotOption0 Register */ +#define BQ25710_PROCHOT0_ILIM_VTH_SHIFT 11 +#define BQ25710_PROCHOT0_ILIM_VTH_MASK (0x1f << \ + BQ25710_PROCHOT0_ILIM_VTH_SHIFT) + /* ProchotOption1 Register */ #define BQ25710_PROCHOT_PROFILE_VDPM BIT(7) +#define BQ25710_PROCHOT_PROFILE_VSYS BIT(2) #endif /* __CROS_EC_BQ25710_H */ |