[Letux-kernel] dt-bindings: power: supply: bq27xxx: Add monitored-battery documentation

H. Nikolaus Schaller hns at goldelico.com
Tue Aug 29 15:33:10 CEST 2017


Hi,

> Am 29.08.2017 um 15:25 schrieb Michael Mrozek <EvilDragon at openpandora.org>:
> 
> The battery monitor has been fixed by notaz.
> Find the commits here:
> 
> https://dev.pyra-handheld.com/notaz/pyra-kernel/commits/pyra-4.10 <https://dev.pyra-handheld.com/notaz/pyra-kernel/commits/pyra-4.10>

yes, I have seen it.

Anyways the patches from Liam seem to work on 4.13-rc7 and are a much more general solution.
I am just starting to test a little.

BR,
Nikolaus


> 
> On August 29, 2017 11:43:43 AM GMT+02:00, "H. Nikolaus Schaller" <hns at goldelico.com> wrote:
> Hi,
> I am trying to get this working on our bq27421.
> 
> But the only message I get is:
> 
> [    6.086407] bq27xxx-battery 1-0055: data memory update not supported for chip
> 
> A little research shows that this message comes from
> 
>  http://elixir.free-electrons.com/linux/v4.13-rc7/source/drivers/power/supply/bq27xxx_battery.c#L1279 <http://elixir.free-electrons.com/linux/v4.13-rc7/source/drivers/power/supply/bq27xxx_battery.c#L1279>
> 
> So di->dm_regs is NULL.
> 
> But doing an fgrep for dm_regs shows no line of code where the pointer is set to a non-null value:
> 
> master hns$ fgrep -R dm_regs *
> drivers/power/supply/bq27xxx_battery.c: .class = (di)->dm_regs[i].subclass_id, \
> drivers/power/supply/bq27xxx_battery.c: .block = (di)->dm_regs[i].offset / BQ27XXX_DM_SZ, \
> drivers/power/supply/bq27xxx_battery.c: struct bq27xxx_dm_reg *reg = &di->dm_regs[reg_id];
> drivers/power/supply/bq27xxx_battery.c: if (!di->dm_regs) {
> drivers/power/supply/bq27xxx_battery.c: max = di->dm_regs[BQ27XXX_DM_DESIGN_ENERGY].max;
> drivers/power/supply/bq27xxx_battery.c: max = di->dm_regs[BQ27XXX_DM_DESIGN_CAPACITY].max;
> drivers/power/supply/bq27xxx_battery.c: min = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].min;
> drivers/power/supply/bq27xxx_battery.c: max = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].max;
> Binary file drivers/power/supply/bq27xxx_battery.ko matches
> Binary file drivers/power/supply/bq27xxx_battery.o matches
> Binary file drivers/power/supply/bq27xxx_battery_i2c.ko matches
> Binary file drivers/power/supply/bq27xxx_battery_i2c.o matches
> include/linux/power/bq27xxx_battery.h: struct bq27xxx_dm_reg *dm_regs;
> master hns$ 
> 
> What am I doing wrong here?
> 
> BR and thanks,
> Nikolaus
> 
> 
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> 
> -- 
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