[ibm-acpi-devel] Lid sensor on Yoga 11e

[Steven P. <st...@pr...>]

Hi Thinkpad ACPI folks,

I recently bought a Thinkpad Yoga 11e (20GA001FUS).  It's a multimode 
tablet/laptop and thus has a more-complicated than normal lid sensor.  
Unfortunately, this lid sensor doesn't work under linux - meaning the 
keyboard and touchpad exposed and active when in tablet mode.

I'm a software person, so I'm a little lost trying to figure out which 
device/sensor/hardware I need to be looking at for this functionality.  
However, once I know which device/sensor/hardware to use, I'm happy to 
write and submit a patch to enable it.

I was hoping you all could help me locate the right device/sensor/hardware.

 From what I've gathered so far:

- There is a BOSCH 0200 accelerometer that Windows uses to detect 
orientation.  Under Windows, disabling this sensor also disables the lid 
detection - but this doesn't seem to be the only device involved.  Under 
linux it shows up as 
/sys/devices/pci0000:00/808622C1:02/i2c-3/i2c-BOSC0200:00, 
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/808622C1:02/BOSC0200:00, 
/sys/bus/acpi/devices/BOSC0200:00 and /sys/bus/12c/devices/i2c-BPSC0200:00

- I have /sys/bus/acpi/devices/MSFT9001:00/ (and probably other 
locations).  Under Windows, this is a (software?) lid sensor. This 
doesn't seem to work, but I have no idea why.

I'm sure there is critical information I just don't know enough to give 
you - for that I apologize and I would be happy to send it along.

Any help you can offer is much appreciated.

Thank you,

Steve