power: supply: sc27xx: Add boot voltage support

Add new property to allow to get the voltage measured during boot time.

Signed-off-by: Yuanjiang Yu <yuanjiang.yu@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

diff --git a/drivers/power/supply/sc27xx_fuel_gauge.c b/drivers/power/supply/sc27xx_fuel_gauge.c
index 82d0c64..be42e81 100644 (file)
--- a/drivers/power/supply/sc27xx_fuel_gauge.c
+++ b/drivers/power/supply/sc27xx_fuel_gauge.c
@@ -84,6 +84,7 @@
  * @init_clbcnt: the initial coulomb counter
  * @max_volt: the maximum constant input voltage in millivolt
  * @min_volt: the minimum drained battery voltage in microvolt
+ * @boot_volt: the voltage measured during boot in microvolt
  * @table_len: the capacity table length
  * @resist_table_len: the resistance table length
  * @cur_1000ma_adc: ADC value corresponding to 1000 mA
@@ -109,6 +110,7 @@ struct sc27xx_fgu_data {
        int init_clbcnt;
        int max_volt;
        int min_volt;
+       int boot_volt;
        int table_len;
        int resist_table_len;
        int cur_1000ma_adc;
@@ -321,6 +323,7 @@ static int sc27xx_fgu_get_boot_capacity(struct sc27xx_fgu_data *data, int *cap)
 
        volt = sc27xx_fgu_adc_to_voltage(data, volt);
        ocv = volt * 1000 - oci * data->internal_resist;
+       data->boot_volt = ocv;
 
        /*
         * Parse the capacity table to look up the correct capacity percent
@@ -680,6 +683,10 @@ static int sc27xx_fgu_get_property(struct power_supply *psy,
                val->intval = value * 1000;
                break;
 
+       case POWER_SUPPLY_PROP_VOLTAGE_BOOT:
+               val->intval = data->boot_volt;
+               break;
+
        default:
                ret = -EINVAL;
                break;
@@ -750,6 +757,7 @@ static enum power_supply_property sc27xx_fgu_props[] = {
        POWER_SUPPLY_PROP_VOLTAGE_NOW,
        POWER_SUPPLY_PROP_VOLTAGE_OCV,
        POWER_SUPPLY_PROP_VOLTAGE_AVG,
+       POWER_SUPPLY_PROP_VOLTAGE_BOOT,
        POWER_SUPPLY_PROP_CURRENT_NOW,
        POWER_SUPPLY_PROP_CURRENT_AVG,
        POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,