BQ27XXXSW-LINUX

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:

1. drivers/power/supply/bq27xxx_battery.c
2. drivers/power/supply/bq27xxx_battery_i2c.c
3. drivers/power/supply/bq27xxx_battery_hdq.c
4. include/linux/power/bq27xxx_battery.h

Source Files

Other Files

Enabling Driver Support

Configure kernel with "make menuconfig" (alternatively use "make xconfig" or "make nconfig")

Menuconfig Location

Symbol: BATTERY_BQ27XXX [=y]Type  : tristatePrompt: 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  : booleanPrompt: 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  : tristatePrompt: 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  : tristatePrompt: 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 thisdriver please either1. Send the patches to the relevant Linux Kernel community as listed in the maintainers file located: Hereor2.  Contact your TI representative.