[coreboot] x60 - question about rfkill and wwan/bluetooth status

Charles Devereaux coreboot at guylhem.net
Tue Oct 21 19:24:04 CEST 2014


Hello

I am quite interested in WWAN support. My previous findings were reported
on http://www.coreboot.org/pipermail/coreboot/2014-September/078538.html

At the moment, using a branch based on a  libreboot5, along with patch
#4056, it works quite well, but I do not have rfkill support (cf
http://www.coreboot.org/pipermail/coreboot/2014-September/078542.html) or
any way to turn WWAN off.

Basically, there is no WWAN rfkill entry if you do "rfkill list"

Also, I noticed that while rfkill block 0 does turn off the wifi led,
rfkill block for bluetooth does not turn turn off its led (or even echo
'5-2' > /sys/bus/usb/drivers/usb/unbind)

My belief is some ACPI entries are missing to handle that.

I am going back into the ACPI table investigation, but I'm curious whether
anyone has had good results with WWAN, ie :
 - if rfkill shows a WWAN entry
 - if rfkill block reduces power consumption (cf
/proc/acpi/battery/BAT0/state) and turns off the LED.

I would also be interested to know if rfkill block bluetooth does turns off
the LED (the power consumption change might be too low to be noticeable)

Thanks
Charles
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