linux-kernel - [PATCH] power: supply: max17042_battery: Add support for the TTE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200330053352.GA28178@localhost.localdomain>
Date:   Mon, 30 Mar 2020 01:33:55 -0400
From:   Geordan Neukum <gneukum1@...il.com>
To:     Sebastian Reichel <sre@...nel.org>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     gneukum1@...il.com
Subject: [PATCH] power: supply: max17042_battery: Add support for the TTE_NOW
 prop

The max170{42,47,50,55} family of fuel gauges all provide time-to-empty
estimation. As such, let's export this as a property.

Signed-off-by: Geordan Neukum <gneukum1@...il.com>
---
 drivers/power/supply/max17042_battery.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/power/supply/max17042_battery.c b/drivers/power/supply/max17042_battery.c
index 69ec4295d55d..f284547913d6 100644
--- a/drivers/power/supply/max17042_battery.c
+++ b/drivers/power/supply/max17042_battery.c
@@ -87,6 +87,7 @@ static enum power_supply_property max17042_battery_props[] = {
 	POWER_SUPPLY_PROP_SCOPE,
 	POWER_SUPPLY_PROP_CURRENT_NOW,
 	POWER_SUPPLY_PROP_CURRENT_AVG,
+	POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
 };

 static int max17042_get_temperature(struct max17042_chip *chip, int *temp)
@@ -411,6 +412,13 @@ static int max17042_get_property(struct power_supply *psy,
 			return -EINVAL;
 		}
 		break;
+	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
+		ret = regmap_read(map, MAX17042_TTE, &data);
+		if (ret < 0)
+			return ret;
+
+		val->intval = data * 5625 / 1000;
+		break;
 	default:
 		return -EINVAL;
 	}
--
2.18.1