[PATCH v3 5/5] power: supply: core: supply battery soc with decimal form

[Qiwu Huang]

From: Qiwu Huang <huangqiwu@xxxxxxxxxx>

Broadcast battery soc with decimal form.
soc_decimal is the decimal part of battery soc.
soc_decimal_rate is update frequency of decimal
part of battery soc.
We want to report such as 0.01 to 99.99% to
user space to improve user experience
when do very quick charging.

Signed-off-by: Qiwu Huang <huangqiwu@xxxxxxxxxx>
---
 Documentation/ABI/testing/sysfs-class-power | 25 +++++++++++++++++++++
 drivers/power/supply/power_supply_sysfs.c   |  2 ++
 include/linux/power_supply.h                |  2 ++
 3 files changed, 29 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
index 54647d6995d3..5e0bba3e1930 100644
--- a/Documentation/ABI/testing/sysfs-class-power
+++ b/Documentation/ABI/testing/sysfs-class-power
@@ -349,6 +349,31 @@ Description:
 		Access: Read
 		Valid values: Represented in microvolts
 
+What:		/sys/class/power_supply/<supply_name>/soc_decimal,
+Date:		Jul 2020
+Contact:	jiangfei1@xxxxxxxxxx
+Description:
+		Broadcast battery soc with decimal form.Battery soc(0 - 100 percent)
+		is fine grain representation of battery capacity.
+		soc_decimal is the start decimal part of battery soc.
+		For example, soc_decimal value is 30 for 80.30%.
+
+		Access: Read
+		Valid values: 0 - 99
+
+What:		/sys/class/power_supply/<supply_name>/soc_decimal_rate,
+Date:		Jul 2020
+Contact:	jiangfei1@xxxxxxxxxx
+Description:
+		Broadcast battery soc with decimal form.Battery soc(0 - 100 percent)
+		is fine grain representation of battery capacity.
+		soc_decimal_rate is update rate for decimal part of battery soc.
+		The value is depend on charging power. Soc decimal change faster
+		with larger charging power.
+
+		Access: Read
+		Valid values: 1 - 100
+
 ===== USB Properties =====
 
 What: 		/sys/class/power_supply/<supply_name>/current_avg
diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index 81916b6b6ccf..a837addb4f21 100644
--- a/drivers/power/supply/power_supply_sysfs.c
+++ b/drivers/power/supply/power_supply_sysfs.c
@@ -210,6 +210,8 @@ static struct power_supply_attr power_supply_attrs[] = {
 	POWER_SUPPLY_ATTR(TX_ADAPTER),
 	POWER_SUPPLY_ATTR(SIGNAL_STRENGTH),
 	POWER_SUPPLY_ATTR(REVERSE_CHG_MODE),
+	POWER_SUPPLY_ATTR(SOC_DECIMAL),
+	POWER_SUPPLY_ATTR(SOC_DECIMAL_RATE),
 };
 
 static struct attribute *
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index a87ae1fff8d1..71e7c8010bde 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -171,6 +171,8 @@ enum power_supply_property {
 	POWER_SUPPLY_PROP_TX_ADAPTER,
 	POWER_SUPPLY_PROP_SIGNAL_STRENGTH,
 	POWER_SUPPLY_PROP_REVERSE_CHG_MODE,
+	POWER_SUPPLY_PROP_SOC_DECIMAL,
+	POWER_SUPPLY_PROP_SOC_DECIMAL_RATE,
 };
 
 enum power_supply_type {
-- 
2.27.0