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authorAngus Ainslie (Purism) <angus@akkea.ca>2018-07-31 11:49:09 -0600
committerSebastian Reichel <sre@kernel.org>2018-09-16 11:29:10 +0200
commitae6fe7a387e97e2ea8cc275fff5ef55568c4daf3 (patch)
tree9402e9787fa5d829bf3848f62c30fbd5db87e396 /drivers/power
parent2e1a2ddee9cef07f5b1fab5625dcc56078139a4e (diff)
downloadlinux-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.c10
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[] = {