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[v2,3/5] power: supply: core: add wireless signal strength property

Message ID bb8a46e8091fb4b376c42a7e3de676dc3a0acfea.1594612572.git.huangqiwu@xiaomi.com (mailing list archive)
State Not Applicable, archived
Headers show
Series [v2,1/5] power: supply: core: add quick charge type property | expand

Commit Message

Qiwu Huang July 13, 2020, 4:03 a.m. UTC 
From: Qiwu Huang <huangqiwu@xiaomi.com>

reports wireless signal strength.
The value show degree of coupling between tx and rx.

Signed-off-by: Qiwu Huang <huangqiwu@xiaomi.com>
---
 Documentation/ABI/testing/sysfs-class-power | 11 +++++++++++
 drivers/power/supply/power_supply_sysfs.c   |  1 +
 include/linux/power_supply.h                |  1 +
 3 files changed, 13 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
index cd07d3f4e8b1..f10780be2732 100644
--- a/Documentation/ABI/testing/sysfs-class-power
+++ b/Documentation/ABI/testing/sysfs-class-power
@@ -729,3 +729,14 @@  Description:
 
 		Access: Read-Only
 		Valid values: Reported as integer
+
+What:		/sys/class/power_supply/<supply_name>/signal_strength
+Date:		Jul 2020
+Contact:	Fei Jiang <jiangfei1@xiaomi.com>
+Description:
+		Reports wireless signal strength.The value show degree of coupling.
+		Unit is KHZ,the "value" means the working frequency of receiver
+		chip of wireless charging.
+
+		Access: Read-Only
+		Valid values: Reported as integer
diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index f2458e21d02b..e420a453095e 100644
--- a/drivers/power/supply/power_supply_sysfs.c
+++ b/drivers/power/supply/power_supply_sysfs.c
@@ -208,6 +208,7 @@  static struct power_supply_attr power_supply_attrs[] = {
 	POWER_SUPPLY_ATTR(SERIAL_NUMBER),
 	POWER_SUPPLY_ATTR(QUICK_CHARGE_TYPE),
 	POWER_SUPPLY_ATTR(TX_ADAPTER),
+	POWER_SUPPLY_ATTR(SIGNAL_STRENGTH),
 };
 
 static struct attribute *
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 2de9a4c93723..397fb8e96b03 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -169,6 +169,7 @@  enum power_supply_property {
 	POWER_SUPPLY_PROP_SERIAL_NUMBER,
 	POWER_SUPPLY_PROP_QUICK_CHARGE_TYPE,
 	POWER_SUPPLY_PROP_TX_ADAPTER,
+	POWER_SUPPLY_PROP_SIGNAL_STRENGTH,
 };
 
 enum power_supply_type {