[Letux-kernel] [PATCH] power: supply: bq27xxx: do not report bogus zero values

[Sicelo]

Hi Nikolaus

On Fri, Feb 28, 2025 at 11:01:35AM +0100, H. Nikolaus Schaller wrote:
> > 
> > Thanks for the review. I will do more thorough testing over the weekend
> > and send the patch.

I have made a follow-up patch [0], which produces the following values
on the N900:

bq27200 in 'normal' state:

   DEVTYPE=power_supply
   OF_NAME=bq27200
   OF_FULLNAME=/ocp at 68000000/i2c at 48072000/bq27200 at 55
   OF_COMPATIBLE_0=ti,bq27200
   OF_COMPATIBLE_N=1
   POWER_SUPPLY_NAME=bq27200-0
   POWER_SUPPLY_TYPE=Battery
   POWER_SUPPLY_STATUS=Discharging
   POWER_SUPPLY_HEALTH=Calibration required
   POWER_SUPPLY_PRESENT=1
   POWER_SUPPLY_TECHNOLOGY=Li-ion
   POWER_SUPPLY_CYCLE_COUNT=0
   POWER_SUPPLY_VOLTAGE_MAX_DESIGN=4064000
   POWER_SUPPLY_VOLTAGE_MIN_DESIGN=3000000
   POWER_SUPPLY_VOLTAGE_NOW=3536000
   POWER_SUPPLY_CURRENT_NOW=-432327
   POWER_SUPPLY_POWER_AVG=1146100
   POWER_SUPPLY_CHARGE_FULL_DESIGN=2056320
   POWER_SUPPLY_CHARGE_FULL=2050560
   POWER_SUPPLY_CHARGE_NOW=366680
   POWER_SUPPLY_ENERGY_NOW=1207420
   POWER_SUPPLY_CAPACITY=18
   POWER_SUPPLY_CAPACITY_LEVEL=Normal
   POWER_SUPPLY_TEMP=316
   POWER_SUPPLY_TIME_TO_EMPTY_NOW=4140
   POWER_SUPPLY_TIME_TO_EMPTY_AVG=3780
   POWER_SUPPLY_TYPE=Battery
   POWER_SUPPLY_MANUFACTURER=Texas Instruments

bq27200 in 'broken' state:

   DEVTYPE=power_supply
   OF_NAME=bq27200
   OF_FULLNAME=/ocp at 68000000/i2c at 48072000/bq27200 at 55
   OF_COMPATIBLE_0=ti,bq27200
   OF_COMPATIBLE_N=1
   POWER_SUPPLY_NAME=bq27200-0
   POWER_SUPPLY_TYPE=Battery
   POWER_SUPPLY_STATUS=Discharging
   POWER_SUPPLY_HEALTH=Calibration required
   POWER_SUPPLY_PRESENT=1
   POWER_SUPPLY_TECHNOLOGY=Li-ion
   POWER_SUPPLY_CYCLE_COUNT=0
   POWER_SUPPLY_VOLTAGE_MAX_DESIGN=4064000
   POWER_SUPPLY_VOLTAGE_MIN_DESIGN=3000000
   POWER_SUPPLY_VOLTAGE_NOW=3633000
   POWER_SUPPLY_CURRENT_NOW=-397341
   POWER_SUPPLY_POWER_AVG=1432260
   POWER_SUPPLY_CHARGE_FULL_DESIGN=2056320
   POWER_SUPPLY_CHARGE_FULL=2050560
   POWER_SUPPLY_CAPACITY_LEVEL=Normal
   POWER_SUPPLY_TEMP=299
   POWER_SUPPLY_TYPE=Battery
   POWER_SUPPLY_MANUFACTURER=Texas Instruments


Hope this also works fine on your devices.

Thanks and Regards
Sicelo



[0] https://lore.kernel.org/linux-pm/20250312121712.146109-1-absicsz@gmail.com/T/#t