Re: Display got wrong rotation after hid_sensor_accel_3d is loaded

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Yes, this machine will be sold with Windows, but currently we didn't
hear any issues from Windows side.
Here is the rdesc I found under /sys/kernel/debug/hid

BTW, we're trying to push BIOS to provide some useful info about the
orientation of the sensor, so that we don't have to list those
machines in the driver.

Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx> 於
2019年12月31日 週二 上午1:18寫道:
>
> Hi Kao,
>
> Is this device sold with Windows?
> Can you send full report descriptor (You can get from
> /sys/kernel/debug/hid)?
>
> Thanks,
> Srinivas
>
> On Fri, 2019-12-27 at 10:30 +0800, AceLan Kao wrote:
> > Hi Bastien,
> >
> > Thanks for your suggestion.
> > I just tried to add the following line into
> > /lib/udev/hwdb.d/60-sensor.hwdb and got the correct screen rotation.
> > But the cursor is still un-rotated, the cursor is drawn upside down,
> > and its coordinates are inverted.
> >
> > #########################################
> > # STMicro
> > #########################################
> > sensor:modalias:platform:platform:HID-SENSOR-200073
> >  ACCEL_MOUNT_MATRIX=-1, 0, 0; 0, -1, 0; 0, 0, 1
> >
> > It looks like we should introduce a quirk into hid_sensor_accel_3d
> > driver.
> > There are 3 different scale variables in hid_sensor_accel_3d, but I
> > don't see any of them would work the way I want.
> > Do you mean to introduce new scale variables?
> >
> >    drivers/iio/accel/hid-sensor-accel-3d.c:34:     int
> > scale_pre_decml;
> >    drivers/iio/accel/hid-sensor-accel-3d.c:35:     int
> > scale_post_decml;
> >    drivers/iio/accel/hid-sensor-accel-3d.c:36:     int
> > scale_precision;
> >
> > Bastien Nocera <hadess@xxxxxxxxxx> 於 2019年12月26日 週四 下午11:03寫道:
> > >
> > > On Thu, 2019-12-26 at 17:22 +0800, AceLan Kao wrote:
> > > > Hi all,
> > > >
> > > > I'm working on a new platform which comes with an accelerator
> > > > meter.
> > > > It's a STMicroelectronics LSM6DS3US accelerator meter, it doesn't
> > > > use
> > > > st_sensors driver, but hid_sensor_accel_3d.
> > > > After hid_sensor_accel_3d is loaded, the display becomes upside
> > > > down,
> > > > so I tried to add some code to make it become normal.(ACCEL_X
> > > > should
> > > > have the same modification)
> > > >
> > > > I don't know how to fix this in a correct way, please give me
> > > > some
> > > > hints.
> > >
> > > This needs to be done as a quirk, either by applying a quirk for
> > > the
> > > HID descriptors (which should have a definition of the scale, which
> > > would be negative for this device), or in user-space in systemd's
> > > hwdb
> > > database, which your user-space consumers need to take care of:
> > >
> https://github.com/systemd/systemd/blob/master/hwdb.d/60-sensor.hwdb
> > >
> > > Cheers
> > >
>

Attachment: hid.tgz
Description: application/compressed-tar


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