[PATCH v8 2/4] power: supply: core: add wireless charger adapter type property

[Qiwu Huang <yanziily@gmail.com>]

From: Qiwu Huang <huangqiwu@xiaomi.com>

Reports what type of wireless adapter connection is
currently active for the supply.
for example it can show if ADAPTER_PD capable source is attached.

Signed-off-by: Qiwu Huang <huangqiwu@xiaomi.com>
---
 Documentation/ABI/testing/sysfs-class-power | 28 +++++++++++++++++++++
 drivers/power/supply/power_supply_sysfs.c   |  1 +
 include/linux/power_supply.h                | 19 ++++++++++++++
 3 files changed, 48 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
index dd3773dcf16a..03ab449fae8a 100644
--- a/Documentation/ABI/testing/sysfs-class-power
+++ b/Documentation/ABI/testing/sysfs-class-power
@@ -729,3 +729,31 @@ Contact:	Fei Jiang <jiangfei1@xiaomi.com>
 			3: QUICK_CHARGE_TURBE,
 			4: QUICK_CHARGE_SUPER.
 
+===== Wireless Charger Properties =====
+What:		/sys/class/power_supply/<supply_name>/tx_adapter
+Date:		Jul 2020
+Contact:	Fei Jiang <jiangfei1@xiaomi.com>
+Description:
+		Reports the type of wireless adapter connection is currently active for
+		the supply, for example it can show if ADAPTER_PD capable source
+		is attached. Expect common wireless adapter type, also increase by
+		some vendor private adapter type(ex. ADAPTER_PD_40W).
+
+		Access: Read-Only
+		Valid values:
+			0: ADAPTER_NONE,
+			1: ADAPTER_SDP,
+			2: ADAPTER_DCP,
+			3: ADAPTER_CDP,
+			4: ADAPTER_OCP,
+			5: ADAPTER_QC2,
+			6: ADAPTER_QC3,
+			7: ADAPTER_PD,
+			8: ADAPTER_AUTH_FAILED,
+			9: ADAPTER_PRIVATE_QC3,
+			10: ADAPTER_PRIVATE_PD,
+			11: ADAPTER_CAR_POWER,
+			12: ADAPTER_PRIVATE_PD_40W,
+			13: ADAPTER_VOICE_BOX,
+			14: ADAPTER_PRIVATE_PD_50W.
+
diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index 9554d7907373..f2458e21d02b 100644
--- a/drivers/power/supply/power_supply_sysfs.c
+++ b/drivers/power/supply/power_supply_sysfs.c
@@ -207,6 +207,7 @@ static struct power_supply_attr power_supply_attrs[] = {
 	POWER_SUPPLY_ATTR(MANUFACTURER),
 	POWER_SUPPLY_ATTR(SERIAL_NUMBER),
 	POWER_SUPPLY_ATTR(QUICK_CHARGE_TYPE),
+	POWER_SUPPLY_ATTR(TX_ADAPTER),
 };
 
 static struct attribute *
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index bd99658c05be..00254e096a4a 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -168,6 +168,7 @@ enum power_supply_property {
 	POWER_SUPPLY_PROP_MANUFACTURER,
 	POWER_SUPPLY_PROP_SERIAL_NUMBER,
 	POWER_SUPPLY_PROP_QUICK_CHARGE_TYPE,
+	POWER_SUPPLY_PROP_TX_ADAPTER,
 };
 
 enum power_supply_type {
@@ -211,6 +212,24 @@ enum power_supply_quick_charge_type {
 	QUICK_CHARGE_MAX,
 };
 
+enum power_supply_tx_adapter_type {
+	ADAPTER_NONE = 0,			/* Nothing Attached */
+	ADAPTER_SDP,				/* Standard Downstream Port */
+	ADAPTER_CDP,				/* Charging Downstream Port */
+	ADAPTER_DCP,				/* Dedicated Charging Port */
+	ADAPTER_OCP,				/* Other Charging Port */
+	ADAPTER_QC2,				/* Qualcomm Charge 2.0 */
+	ADAPTER_QC3,				/* Qualcomm Charge 3.0 */
+	ADAPTER_PD,				/* Power Delivery Port */
+	ADAPTER_AUTH_FAILED,			/* Authenticated Failed Adapter */
+	ADAPTER_PRIVATE_QC3,			/* Qualcomm Charge 3.0 with Private Protocol */
+	ADAPTER_PRIVATE_PD,			/* PD Adapter with Private Protocol */
+	ADAPTER_CAR_POWER,			/* Wireless Car Charger */
+	ADAPTER_PRIVATE_PD_40W,			/* 40W PD Adapter with Private Protocol */
+	ADAPTER_VOICE_BOX,			/* Voice Box which Support Wireless Charger */
+	ADAPTER_PRIVATE_PD_50W,			/* 50W PD Adapter with Private Protocol */
+};
+
 enum power_supply_notifier_events {
 	PSY_EVENT_PROP_CHANGED,
 };
-- 
2.28.0