Use correct interrupt for the charger

The bq25895 was not getting interrupts so the charging cycle was not getting properly started.

This should fix USB C chargers but the still seems to be an issue with BC1.2 on USB2/3.

Tested by observing /sys/class/power_supply/bq25890-charger/status after plugging and unplugging the cable.

On my Birch it's working, but not reliably - sometimes fails to notice a change (and checking the registers directly shows that bq25895 has noticed it).

Can you enable the bq25895 dynamic debug so we can see the state changes

echo 'file bq25890_charger.c +p' | sudo tee /sys/kernel/debug/dynamic_debug/control

Plugging in (no change in sysfs):

[ 2595.016689] bq25890-charger 3-006a: S:CHG/PG/VSYS=0/0/0, F:CHG/BOOST/BAT=0/0/0
[ 2595.499537] bq25890-charger 3-006a: S:CHG/PG/VSYS=0/0/0, F:CHG/BOOST/BAT=0/0/0
[ 2595.525598] bq25890-charger 3-006a: S:CHG/PG/VSYS=0/1/1, F:CHG/BOOST/BAT=0/0/0

Unplugging:

[ 2616.206147] bq25890-charger 3-006a: S:CHG/PG/VSYS=0/0/0, F:CHG/BOOST/BAT=0/0/0

Plugging in again (this time sysfs has changed):

[ 2636.028015] bq25890-charger 3-006a: S:CHG/PG/VSYS=0/0/0, F:CHG/BOOST/BAT=0/0/0
[ 2636.520559] bq25890-charger 3-006a: S:CHG/PG/VSYS=0/0/0, F:CHG/BOOST/BAT=0/0/0
[ 2636.536194] bq25890-charger 3-006a: S:CHG/PG/VSYS=0/1/1, F:CHG/BOOST/BAT=0/0/0

Unplugging:

[ 2719.757637] bq25890-charger 3-006a: S:CHG/PG/VSYS=0/0/0, F:CHG/BOOST/BAT=0/0/0

Doesn't seem like there's anything interesting there. Will try some more - happened for me only once today so far, yesterday it was easier to trigger.

Wait, the comment above might be just noise - haven't actually checked in sysfs, just in GNOME Settings and seems like it also can get out of sync with what sysfs reports :/

Will try some more.

This likely was my mistake. Will keep an eye still, but let's get this in now, as it surely doesn't make things worse :)

merged

@sebastian.krzyszkowiak Do you think this is good to merge ?

I think so? I have used it for a few days already.

Ok I haven't seen it go out of sync with sysfs but either way it should be an improvement.