diff options
Diffstat (limited to 'drivers/power/supply/ug3105_battery.c')
| -rw-r--r-- | drivers/power/supply/ug3105_battery.c | 81 |
1 files changed, 15 insertions, 66 deletions
diff --git a/drivers/power/supply/ug3105_battery.c b/drivers/power/supply/ug3105_battery.c index 38e23bdd4603..e8a1de7cade0 100644 --- a/drivers/power/supply/ug3105_battery.c +++ b/drivers/power/supply/ug3105_battery.c @@ -66,10 +66,11 @@ #define UG3105_LOW_BAT_UV 3700000 #define UG3105_FULL_BAT_HYST_UV 38000 +#define AMBIENT_TEMP_CELCIUS 25 + struct ug3105_chip { struct i2c_client *client; struct power_supply *psy; - struct power_supply_battery_info *info; struct delayed_work work; struct mutex lock; int ocv[UG3105_MOV_AVG_WINDOW]; /* micro-volt */ @@ -103,7 +104,8 @@ static int ug3105_read_word(struct i2c_client *client, u8 reg) static int ug3105_get_status(struct ug3105_chip *chip) { - int full = chip->info->constant_charge_voltage_max_uv - UG3105_FULL_BAT_HYST_UV; + int full = chip->psy->battery_info->constant_charge_voltage_max_uv - + UG3105_FULL_BAT_HYST_UV; if (chip->curr > UG3105_CURR_HYST_UA) return POWER_SUPPLY_STATUS_CHARGING; @@ -117,62 +119,6 @@ static int ug3105_get_status(struct ug3105_chip *chip) return POWER_SUPPLY_STATUS_NOT_CHARGING; } -static int ug3105_get_capacity(struct ug3105_chip *chip) -{ - /* - * OCV voltages in uV for 0-110% in 5% increments, the 100-110% is - * for LiPo HV (High-Voltage) bateries which can go up to 4.35V - * instead of the usual 4.2V. - */ - static const int ocv_capacity_tbl[23] = { - 3350000, - 3610000, - 3690000, - 3710000, - 3730000, - 3750000, - 3770000, - 3786667, - 3803333, - 3820000, - 3836667, - 3853333, - 3870000, - 3907500, - 3945000, - 3982500, - 4020000, - 4075000, - 4110000, - 4150000, - 4200000, - 4250000, - 4300000, - }; - int i, ocv_diff, ocv_step; - - if (chip->ocv_avg < ocv_capacity_tbl[0]) - return 0; - - if (chip->status == POWER_SUPPLY_STATUS_FULL) - return 100; - - for (i = 1; i < ARRAY_SIZE(ocv_capacity_tbl); i++) { - if (chip->ocv_avg > ocv_capacity_tbl[i]) - continue; - - ocv_diff = ocv_capacity_tbl[i] - chip->ocv_avg; - ocv_step = ocv_capacity_tbl[i] - ocv_capacity_tbl[i - 1]; - /* scale 0-110% down to 0-100% for LiPo HV */ - if (chip->info->constant_charge_voltage_max_uv >= 4300000) - return (i * 500 - ocv_diff * 500 / ocv_step) / 110; - else - return i * 5 - ocv_diff * 5 / ocv_step; - } - - return 100; -} - static void ug3105_work(struct work_struct *work) { struct ug3105_chip *chip = container_of(work, struct ug3105_chip, @@ -231,7 +177,12 @@ static void ug3105_work(struct work_struct *work) chip->supplied = power_supply_am_i_supplied(psy); chip->status = ug3105_get_status(chip); - chip->capacity = ug3105_get_capacity(chip); + if (chip->status == POWER_SUPPLY_STATUS_FULL) + chip->capacity = 100; + else + chip->capacity = power_supply_batinfo_ocv2cap(chip->psy->battery_info, + chip->ocv_avg, + AMBIENT_TEMP_CELCIUS); /* * Skip internal resistance calc on charger [un]plug and @@ -401,12 +352,10 @@ static int ug3105_probe(struct i2c_client *client) if (IS_ERR(psy)) return PTR_ERR(psy); - ret = power_supply_get_battery_info(psy, &chip->info); - if (ret) - return ret; - - if (chip->info->factory_internal_resistance_uohm == -EINVAL || - chip->info->constant_charge_voltage_max_uv == -EINVAL) { + if (!psy->battery_info || + psy->battery_info->factory_internal_resistance_uohm == -EINVAL || + psy->battery_info->constant_charge_voltage_max_uv == -EINVAL || + !psy->battery_info->ocv_table[0]) { dev_err(dev, "error required properties are missing\n"); return -ENODEV; } @@ -422,7 +371,7 @@ static int ug3105_probe(struct i2c_client *client) chip->ua_per_unit = 8100000 / curr_sense_res_uohm; /* Use provided internal resistance as start point (in milli-ohm) */ - chip->intern_res_avg = chip->info->factory_internal_resistance_uohm / 1000; + chip->intern_res_avg = psy->battery_info->factory_internal_resistance_uohm / 1000; /* Also add it to the internal resistance moving average window */ chip->intern_res[0] = chip->intern_res_avg; chip->intern_res_avg_index = 1; |