The Linux driver supports the BQ27x series of Battery Fuel Gauges. The Linux driver supports communication through the I2C/HDQ bus and interfaces with the power supply sub-system to monitor battery properties.
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
bq27200
bq27210
bq27500
bq27510
bq27520
bq27521
bq27530
bq27531
bq27541
bq27542
bq27546
bq27742
bq27545
bq27421
bq27425
bq27441
bq27621
Linux Source Files
The files associated with this device are:
drivers/power/supply/bq27xxx_battery.c
drivers/power/supply/bq27xxx_battery_i2c.c
drivers/power/supply/bq27xxx_battery_hdq.c
include/linux/power/bq27xxx_battery.h
Source Files
drivers/power/supply/bq27xxx_battery.c
drivers/power/supply/bq27xxx_battery_i2c.c
drivers/power/supply/bq27xxx_battery_hdq.c
Other Files
include/linux/power/bq27xxx_battery.h
Enabling Driver Support
Configure kernel with "make menuconfig" (alternatively use "make xconfig" or "make nconfig")
Menuconfig Location
Symbol: BATTERY_BQ27XXX [=y]
Type : tristate
Prompt: BQ27xxx battery driver
Location:
-> Device Drivers
-> Power supply class support (POWER_SUPPLY [=y])
Defined at drivers/power/supply/Kconfig:187
Depends on: POWER_SUPPLY [=y]
Symbol: BATTERY_BQ27XXX_DT_UPDATES_NVM [=y]
Type : boolean
Prompt: BQ27xxx support for update of NVM/flash data memory
Location:
-> Device Drivers
-> Power supply class support (POWER_SUPPLY [=y])
Defined at drivers/power/supply/Kconfig:210
Depends on: POWER_SUPPLY [=y] && BATTERY_BQ27XXX_I2C [=y]
Symbol: BATTERY_BQ27XXX_HDQ [=y]
Type : tristate
Prompt: BQ27xxx HDQ support
Location:
-> Device Drivers
-> Power supply class support (POWER_SUPPLY [=y])
-> BQ27xxx battery driver (BATTERY_BQ27XXX [=y])
Defined at drivers/power/supply/Kconfig:201
Depends on: POWER_SUPPLY [=y] && BATTERY_BQ27XXX [=y] && W1 [=y]
Symbol: BATTERY_BQ27XXX_I2C [=y]
Type : tristate
Prompt: BQ27xxx I2C support
Location:
-> Device Drivers
-> Power supply class support (POWER_SUPPLY [=y])
-> BQ27xxx battery driver (BATTERY_BQ27XXX [=y])
Defined at drivers/power/supply/Kconfig:192
Depends on: POWER_SUPPLY [=y] && BATTERY_BQ27XXX [=y] && I2C [=y]
Fixes and Code Enhancements
If there are fixes and or code enhancements that need to be added to this
driver please either
1. Send the patches to the relevant Linux Kernel community as listed in the maintainers file located: Here
or
2. Contact your TI representative.