diff options
Diffstat (limited to 'driver/charger/bq2589x.c')
| -rw-r--r-- | driver/charger/bq2589x.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/driver/charger/bq2589x.c b/driver/charger/bq2589x.c index e54f0d7a9e..2771924f1a 100644 --- a/driver/charger/bq2589x.c +++ b/driver/charger/bq2589x.c @@ -239,6 +239,35 @@ int charger_post_init(void) return EC_SUCCESS; } +/*****************************************************************************/ +/* Hardware current ramping (aka ICO: Input Current Optimizer) */ + +#ifdef CONFIG_CHARGE_RAMP_HW +int chg_ramp_is_stable(void) +{ + int val, rv; + + rv = bq2589x_read(BQ2589X_REG_ID, &val); + if (!rv && (val & BQ2589X_ID_ICO_OPTIMIZED)) + return 1; + else + return 0; +} + +int chg_ramp_is_detected(void) +{ + return 1; +} + +int chg_ramp_get_current_limit(void) +{ + int input_ma, rv; + + rv = bq2589x_read(BQ2589X_REG_ADC_INPUT_CURR, &input_ma); + + return rv ? -1 : 100 + (input_ma & 0x3f) * 50; +} +#endif /* CONFIG_CHARGE_RAMP_HW */ /*****************************************************************************/ /* Hooks */ |