linux-kernel - [PATCH] power: supply: sc27xx: Add POWER_SUPPLY_PROP_CHARGE

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Message-Id: <33dba0929575461e38c2e17ac0cc4a8a4e46fa2f.1581658633.git.baolin.wang7@gmail.com>
Date:   Fri, 14 Feb 2020 13:38:58 +0800
From:   Baolin Wang <baolin.wang7@...il.com>
To:     sre@...nel.org
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        baolin.wang7@...il.com, zhang.lyra@...il.com, orsonzhai@...il.com
Subject: [PATCH] power: supply: sc27xx: Add POWER_SUPPLY_PROP_CHARGE_NOW attribute

Add the POWER_SUPPLY_PROP_CHARGE_NOW attribute to allow user to get
current battery capacity (uAh) to do measurement.

Signed-off-by: Baolin Wang <baolin.wang7@...il.com>
---
 drivers/power/supply/sc27xx_fuel_gauge.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/power/supply/sc27xx_fuel_gauge.c b/drivers/power/supply/sc27xx_fuel_gauge.c
index 469c83f..a7c8a84 100644
--- a/drivers/power/supply/sc27xx_fuel_gauge.c
+++ b/drivers/power/supply/sc27xx_fuel_gauge.c
@@ -614,6 +614,17 @@ static int sc27xx_fgu_get_property(struct power_supply *psy,
 		val->intval = data->total_cap * 1000;
 		break;
 
+	case POWER_SUPPLY_PROP_CHARGE_NOW:
+		ret = sc27xx_fgu_get_clbcnt(data, &value);
+		if (ret)
+			goto error;
+
+		value = DIV_ROUND_CLOSEST(value * 10,
+					  36 * SC27XX_FGU_SAMPLE_HZ);
+		val->intval = sc27xx_fgu_adc_to_current(data, value);
+
+		break;
+
 	default:
 		ret = -EINVAL;
 		break;
@@ -682,6 +693,7 @@ static int sc27xx_fgu_property_is_writeable(struct power_supply *psy,
 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
 	POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
 	POWER_SUPPLY_PROP_CALIBRATE,
+	POWER_SUPPLY_PROP_CHARGE_NOW
 };
 
 static const struct power_supply_desc sc27xx_fgu_desc = {
-- 
1.7.9.5