power: supply: sbs-battery: add POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN support

Add support for reporting the MaxError register from
battery fuel gauges following the smart battery standard.

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
index a15783802ef8281e5720e07d41c2852b5c6b70cc..4356fdf25d4af0e96385e9b31be1ec8ba5c36dff 100644 (file)
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -26,6 +26,7 @@ enum {
        REG_TEMPERATURE,
        REG_VOLTAGE,
        REG_CURRENT,
+       REG_MAX_ERR,
        REG_CAPACITY,
        REG_TIME_TO_EMPTY,
        REG_TIME_TO_FULL,
@@ -85,6 +86,8 @@ static const struct chip_data {
                SBS_DATA(POWER_SUPPLY_PROP_VOLTAGE_NOW, 0x09, 0, 20000),
        [REG_CURRENT] =
                SBS_DATA(POWER_SUPPLY_PROP_CURRENT_NOW, 0x0A, -32768, 32767),
+       [REG_MAX_ERR] =
+               SBS_DATA(POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN, 0x0c, 0, 100),
        [REG_CAPACITY] =
                SBS_DATA(POWER_SUPPLY_PROP_CAPACITY, 0x0D, 0, 100),
        [REG_REMAINING_CAPACITY] =
@@ -132,6 +135,7 @@ static enum power_supply_property sbs_properties[] = {
        POWER_SUPPLY_PROP_VOLTAGE_NOW,
        POWER_SUPPLY_PROP_CURRENT_NOW,
        POWER_SUPPLY_PROP_CAPACITY,
+       POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN,
        POWER_SUPPLY_PROP_TEMP,
        POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
        POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
@@ -676,6 +680,7 @@ static int sbs_get_property(struct power_supply *psy,
        case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
        case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
        case POWER_SUPPLY_PROP_CAPACITY:
+       case POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN:
                ret = sbs_get_property_index(client, psp);
                if (ret < 0)
                        break;