Commit 05f2281b authored by Ricardo Rivera-Matos's avatar Ricardo Rivera-Matos Committed by Sebastian Reichel
Browse files

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: default avatarRicardo Rivera-Matos <rriveram@opensource.cirrus.com>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent e5372503

Documentation/ABI/testing/sysfs-class-power

+5 −2
Original line number Diff line number Diff line
@@ -380,13 +380,16 @@ Description: 
		algorithm to adjust the charge rate dynamically, without

		any user configuration required. "Custom" means that the charger

		uses the charge_control_* properties as configuration for some

		different algorithm.

		different algorithm. "Bypass" means the charger bypasses the

		charging path around the integrated converter allowing for a

		"smart" wall adaptor to perform the power conversion

		externally.



		Access: Read, Write



		Valid values:

			      "Unknown", "N/A", "Trickle", "Fast", "Standard",

			      "Adaptive", "Custom"

			      "Adaptive", "Custom", "Bypass"



What:		/sys/class/power_supply/<supply_name>/charge_term_current

Date:		July 2014

drivers/power/supply/power_supply_sysfs.c

+1 −0
Original line number Diff line number Diff line
@@ -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[] = {

include/linux/power_supply.h

+1 −0
Original line number Diff line number Diff line
@@ -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 {