From c10b68e331c51aed8a615af701946dd85b2aca1c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Draszik?= Date: Mon, 2 Mar 2026 13:32:10 +0000 Subject: [PATCH] power: supply: max17042: report time to full (max17055 & max77759) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Report the remaining time to full as calculated by the firmware for devices that implement this. Similar to time to empty, the reported value is only meaningful when charging, i.e. if it is != U16_MAX. Reviewed-by: Peter Griffin Signed-off-by: André Draszik Link: https://patch.msgid.link/20260302-max77759-fg-v3-11-3c5f01dbda23@linaro.org Signed-off-by: Sebastian Reichel --- drivers/power/supply/max17042_battery.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/power/supply/max17042_battery.c b/drivers/power/supply/max17042_battery.c index bafbf8706055..167fb3fb3732 100644 --- a/drivers/power/supply/max17042_battery.c +++ b/drivers/power/supply/max17042_battery.c @@ -89,6 +89,7 @@ static enum power_supply_property max17042_battery_props[] = { POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_SCOPE, POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, + POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, // these two have to be at the end on the list POWER_SUPPLY_PROP_CURRENT_NOW, POWER_SUPPLY_PROP_CURRENT_AVG, @@ -443,6 +444,21 @@ static int max17042_get_property(struct power_supply *psy, if (data == U16_MAX) return -ENODATA; + val->intval = data * 5625 / 1000; + break; + case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW: + if (chip->chip_type != MAXIM_DEVICE_TYPE_MAX17055 && + chip->chip_type != MAXIM_DEVICE_TYPE_MAX77759) + return -EINVAL; + + ret = regmap_read(map, MAX17055_TTF, &data); + if (ret < 0) + return ret; + + /* when discharging, the value is not meaningful */ + if (data == U16_MAX) + return -ENODATA; + val->intval = data * 5625 / 1000; break; default: