From: Qiwu Huang <yanziily@gmail.com>
To: sre@kernel.org
Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
gregkh@linuxfoundation.org, jiangfei1@xiaomi.com,
Qiwu Huang <huangqiwu@xiaomi.com>
Subject: [PATCH v3 3/5] power: supply: core: add wireless signal strength property
Date: Wed, 15 Jul 2020 08:35:21 +0800 [thread overview]
Message-ID: <460b4176d1ef7001cecdf84682c9d39ac676b8bd.1594726859.git.huangqiwu@xiaomi.com> (raw)
In-Reply-To: <cover.1594726859.git.huangqiwu@xiaomi.com>
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 | 10 ++++++++++
drivers/power/supply/power_supply_sysfs.c | 1 +
include/linux/power_supply.h | 1 +
3 files changed, 12 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
index 03ab449fae8a..75ec7de2fe78 100644
--- a/Documentation/ABI/testing/sysfs-class-power
+++ b/Documentation/ABI/testing/sysfs-class-power
@@ -757,3 +757,13 @@ Description:
13: ADAPTER_VOICE_BOX,
14: ADAPTER_PRIVATE_PD_50W.
+What: /sys/class/power_supply/<supply_name>/signal_strength
+Date: Jul 2020
+Contact: Fei Jiang <jiangfei1@xiaomi.com>
+Description:
+ In PING phase, RX transmits a signal strength packet as the first
+ communication packet to instruct the base to keep power signal on.
+ The value reports wireless signal strength and show degree of coupling.
+
+ Access: Read-Only
+ Valid values: 0 - 100
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 0bbdec1630a4..346c6c9c0737 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 {
--
2.27.0
next prev parent reply other threads:[~2020-07-15 0:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1594726859.git.huangqiwu@xiaomi.com>
2020-07-15 0:35 ` [PATCH v3 1/5] power: supply: core: add quick charge type property Qiwu Huang
2020-07-15 7:09 ` Greg KH
2020-07-15 0:35 ` [PATCH v3 2/5] power: supply: core: add wireless charger adapter " Qiwu Huang
2020-07-15 0:35 ` Qiwu Huang [this message]
2020-07-15 0:35 ` [PATCH v3 4/5] power: supply: core: property to control reverse charge Qiwu Huang
2020-07-15 0:35 ` [PATCH v3 5/5] power: supply: core: supply battery soc with decimal form Qiwu Huang
2020-07-15 7:10 ` Greg KH
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