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Subject[PATCH 3/5] power: supply: core: add wireless signal strength property
Date
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 | 9 ++++++++-
drivers/power/supply/power_supply_sysfs.c | 1 +
include/linux/power_supply.h | 1 +
3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
index 2099cf194a89..1f42aa0c071e 100644
--- a/Documentation/ABI/testing/sysfs-class-power
+++ b/Documentation/ABI/testing/sysfs-class-power
@@ -730,4 +730,11 @@ Description:

Access: Read-Only
Valid values: "ADAPTER_NONE", "ADAPTER_SDP", "ADAPTER_DCP", "ADAPTER_CDP",
- "ADAPTER_QC2", "ADAPTER_QC3", "ADAPTER_PD" or other private adapter.
\ No newline at end of file
+ "ADAPTER_QC2", "ADAPTER_QC3", "ADAPTER_PD" or other private adapter.
+
+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.
\ No newline at end of file
diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index c864a14829ec..42fbe1b68255 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 {
--
2.26.0
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