diff options
| author | Angus Ainslie (Purism) <angus@akkea.ca> | 2018-07-31 11:49:09 -0600 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2018-09-16 11:29:10 +0200 |
| commit | ae6fe7a387e97e2ea8cc275fff5ef55568c4daf3 (patch) | |
| tree | 9402e9787fa5d829bf3848f62c30fbd5db87e396 /drivers/power | |
| parent | 2e1a2ddee9cef07f5b1fab5625dcc56078139a4e (diff) | |
| download | linux-ae6fe7a387e97e2ea8cc275fff5ef55568c4daf3.tar.bz2 | |
power: supply: bq25890_charger: Read back the current battery voltage
The BQ2589x family has the capability of reading the current battery voltage.
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/bq25890_charger.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c index 23b39da07e56..1aa7872ddeb0 100644 --- a/drivers/power/supply/bq25890_charger.c +++ b/drivers/power/supply/bq25890_charger.c @@ -461,6 +461,15 @@ static int bq25890_power_supply_get_property(struct power_supply *psy, val->intval = bq25890_find_val(bq->init_data.iterm, TBL_ITERM); break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = bq25890_field_read(bq, F_SYSV); /* read measured value */ + if (ret < 0) + return ret; + + /* converted_val = 2.304V + ADC_val * 20mV (table 10.3.15) */ + val->intval = 2304000 + ret * 20000; + break; + default: return -EINVAL; } @@ -669,6 +678,7 @@ static enum power_supply_property bq25890_power_supply_props[] = { POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, + POWER_SUPPLY_PROP_VOLTAGE_NOW, }; static char *bq25890_charger_supplied_to[] = { |