FROMLIST: power: supply: core: property to control reverse charge

Interface to control wireless reverse charge.

Bug: 159767865

Signed-off-by: Qiwu Huang <huangqiwu@xiaomi.com>
Link: https://lore.kernel.org/lkml/d2a4960e5641c4360a9360f438669ec03a2c3d0d.1598349907.git.huangqiwu@xiaomi.com/
Change-Id: Iddf4a9efe23180750c8f82709da659a1cf50ff0d

Documentation/ABI/testing/sysfs-class-power

@@ -780,3 +780,17 @@ Description:
 
 		Access: Read-Only
 		Valid values: 0 - 100
+
+What:		/sys/class/power_supply/<supply_name>/reverse_chg_mode
+Date:		Jul 2020
+Contact:	Fei Jiang <jiangfei1@xiaomi.com>
+Description:
+		Some devices support wireless reverse charge function which
+		charge other devices.The property provider interface to
+		enable/disable wireless reverse charge.If enabled, start TX
+		mode and detect RX. Disabled when timeout or manual setting.
+
+		Access: Read, Write
+		Valid values:
+		- 1: enabled
+		- 0: disabled

drivers/power/supply/power_supply_sysfs.c

@@ -213,6 +213,7 @@ static struct power_supply_attr power_supply_attrs[] = {
 	POWER_SUPPLY_ATTR(QUICK_CHARGE_TYPE),
 	POWER_SUPPLY_ATTR(TX_ADAPTER),
 	POWER_SUPPLY_ATTR(SIGNAL_STRENGTH),
+	POWER_SUPPLY_ATTR(REVERSE_CHG_MODE),
 };
 
 static struct attribute *

include/linux/power_supply.h

@@ -173,6 +173,7 @@ enum power_supply_property {
 	POWER_SUPPLY_PROP_QUICK_CHARGE_TYPE,
 	POWER_SUPPLY_PROP_TX_ADAPTER,
 	POWER_SUPPLY_PROP_SIGNAL_STRENGTH,
+	POWER_SUPPLY_PROP_REVERSE_CHG_MODE,
 };
 
 enum power_supply_type {