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| author | Joshua Clayton <stillcompiling@gmail.com> | 2016-08-11 09:59:12 -0700 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2016-08-15 23:14:55 +0200 |
| commit | 957cb720518341abf19009044f240a6342bdd039 (patch) | |
| tree | 026620627f51333a35ef9c2e16511f47a4d385c0 /drivers/power | |
| parent | 492ff9d8f5fa6ad44288050238b7961d457a239d (diff) | |
| download | talos-obmc-linux-957cb720518341abf19009044f240a6342bdd039.tar.gz talos-obmc-linux-957cb720518341abf19009044f240a6342bdd039.zip | |
sbs-battery: add ability to get battery capacity
Battery capacity level is a standard feature of sbs battery
That can be used to tell what the remainig battery capacity is, and
can tell if the battery has not been calibrated/initialized, which makes
the capacity and charging/discharging percentages invalid.
Signed-off-by: Joshua Clayton <stillcompiling@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/sbs-battery.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c index 31f3e333b950..e1dfb3e7aee4 100644 --- a/drivers/power/supply/sbs-battery.c +++ b/drivers/power/supply/sbs-battery.c @@ -41,6 +41,7 @@ enum { REG_TIME_TO_EMPTY, REG_TIME_TO_FULL, REG_STATUS, + REG_CAPACITY_LEVEL, REG_CYCLE_COUNT, REG_SERIAL_NUMBER, REG_REMAINING_CAPACITY, @@ -68,6 +69,7 @@ enum sbs_battery_mode { #define MANUFACTURER_ACCESS_SLEEP 0x0011 /* battery status value bits */ +#define BATTERY_INITIALIZED 0x80 #define BATTERY_DISCHARGING 0x40 #define BATTERY_FULL_CHARGED 0x20 #define BATTERY_FULL_DISCHARGED 0x10 @@ -110,6 +112,8 @@ static const struct chip_data { SBS_DATA(POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, 0x13, 0, 65535), [REG_STATUS] = SBS_DATA(POWER_SUPPLY_PROP_STATUS, 0x16, 0, 65535), + [REG_CAPACITY_LEVEL] = + SBS_DATA(POWER_SUPPLY_PROP_CAPACITY_LEVEL, 0x16, 0, 65535), [REG_CYCLE_COUNT] = SBS_DATA(POWER_SUPPLY_PROP_CYCLE_COUNT, 0x17, 0, 65535), [REG_DESIGN_CAPACITY] = @@ -131,6 +135,7 @@ static const struct chip_data { static enum power_supply_property sbs_properties[] = { POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_CAPACITY_LEVEL, POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_TECHNOLOGY, @@ -376,8 +381,23 @@ static int sbs_get_battery_property(struct i2c_client *client, if (ret >= sbs_data[reg_offset].min_value && ret <= sbs_data[reg_offset].max_value) { val->intval = ret; - if (psp != POWER_SUPPLY_PROP_STATUS) + if (psp == POWER_SUPPLY_PROP_CAPACITY_LEVEL) { + if (!(ret & BATTERY_INITIALIZED)) + val->intval = + POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; + else if (ret & BATTERY_FULL_CHARGED) + val->intval = + POWER_SUPPLY_CAPACITY_LEVEL_FULL; + else if (ret & BATTERY_FULL_DISCHARGED) + val->intval = + POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; + else + val->intval = + POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; return 0; + } else if (psp != POWER_SUPPLY_PROP_STATUS) { + return 0; + } if (ret & BATTERY_FULL_CHARGED) val->intval = POWER_SUPPLY_STATUS_FULL; @@ -589,6 +609,7 @@ static int sbs_get_property(struct power_supply *psy, break; case POWER_SUPPLY_PROP_STATUS: + case POWER_SUPPLY_PROP_CAPACITY_LEVEL: case POWER_SUPPLY_PROP_CYCLE_COUNT: case POWER_SUPPLY_PROP_VOLTAGE_NOW: case POWER_SUPPLY_PROP_CURRENT_NOW: |
