2021-11-04 13:55:21

by Rivera-Matos, Ricardo

Subject: [PATCH 0/1] Introduces bypass charge type property

Hello,

This patch series introduces a new POWER_SUPPLY_CHARGE_TYPE for bypass charging
operation.

In fast charging ICs, the bypass operation is used to bypass the charging path
around the charging IC's integrated power converter to its load. This allows
for "smart" wall adaptors (such as USB PPS standard power adaptors) to handle
the power conversion and heat dissipation externally.

Best Regards,
Ricardo

Ricardo Rivera-Matos (1):
power: supply: Introduces bypass charging property

drivers/power/supply/power_supply_sysfs.c | 1 +
include/linux/power_supply.h | 1 +
2 files changed, 2 insertions(+)

--
2.25.1

2021-11-04 13:53:41

by Rivera-Matos, Ricardo

Subject: [PATCH 1/1] power: supply: Introduces bypass charging property

Adds a POWER_SUPPLY_CHARGE_TYPE_BYPASS option to the POWER_SUPPLY_PROP_CHARGE_TYPE
property to facilitate bypass charging operation.

In bypass charging operation, the charger bypasses the charging path around the
integrated converter allowing for a "smart" wall adaptor to perform the power
conversion externally.

This operational mode is critical for the USB PPS standard of power adaptors and is
becoming a common feature in modern charging ICs such as:

- BQ25980
- BQ25975
- BQ25960
- LN8000
- LN8410

Signed-off-by: Ricardo Rivera-Matos <[email protected]>
---
drivers/power/supply/power_supply_sysfs.c | 1 +
include/linux/power_supply.h | 1 +
2 files changed, 2 insertions(+)

diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index c3d7cbcd4fad..1368e13dc94b 100644
--- a/drivers/power/supply/power_supply_sysfs.c
+++ b/drivers/power/supply/power_supply_sysfs.c
@@ -89,6 +89,7 @@ static const char * const POWER_SUPPLY_CHARGE_TYPE_TEXT[] = {
[POWER_SUPPLY_CHARGE_TYPE_ADAPTIVE] = "Adaptive",
[POWER_SUPPLY_CHARGE_TYPE_CUSTOM] = "Custom",
[POWER_SUPPLY_CHARGE_TYPE_LONGLIFE] = "Long Life",
+ [POWER_SUPPLY_CHARGE_TYPE_BYPASS] = "Bypass",
};

static const char * const POWER_SUPPLY_HEALTH_TEXT[] = {
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 9ca1f120a211..9432234d7900 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -49,6 +49,7 @@ enum {
POWER_SUPPLY_CHARGE_TYPE_ADAPTIVE, /* dynamically adjusted speed */
POWER_SUPPLY_CHARGE_TYPE_CUSTOM, /* use CHARGE_CONTROL_* props */
POWER_SUPPLY_CHARGE_TYPE_LONGLIFE, /* slow speed, longer life */
+ POWER_SUPPLY_CHARGE_TYPE_BYPASS, /* bypassing the charger */
};

enum {
--
2.25.1