diff options
Diffstat (limited to 'include/battery.h')
| -rw-r--r-- | include/battery.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/battery.h b/include/battery.h index 30ec6fdab7..805dc851c9 100644 --- a/include/battery.h +++ b/include/battery.h @@ -414,4 +414,28 @@ void battery_memmap_set_index(enum battery_index index); extern struct i2c_stress_test_dev battery_i2c_stress_test_dev; #endif +/* + * If remaining charge is more than x% of the full capacity, the + * remaining charge is raised to the full capacity before it's + * reported to the rest of the system. + * + * Some batteries don't update full capacity timely or don't update it + * at all. On such systems, compensation is required to guarantee + * the remaining charge will be equal to the full capacity eventually. + * + * On some systems, Rohm charger generates audio noise when the battery + * is fully charged and AC is plugged. A workaround is to do charge- + * discharge cycles between 93 and 100%. On such systems, compensation + * was also applied to mask this cycle from users. + * + * This used to be done in ACPI, thus, all software components except EC + * was seeing the compensated charge. Now we do it in EC. It has more + * knowledge on the charger and the battery. So, it can perform more + * granular and precise compensation. + * + * TODO: Currently, this is applied only to smart battery. Apply it to other + * battery drivers as needed. + */ +void battery_compensate_params(struct batt_params *batt); + #endif /* __CROS_EC_BATTERY_H */ |