to not
drop the ball after fixing my immediate Pixelbook problem :)
On Fri, Sep 25, 2020 at 10:53 AM Lyude Paul wrote:
>
> On Thu, 2020-09-24 at 17:46 -0600, Kevin Chowski wrote:
> > cc back a few others who were unintentionally dropped from the thread
> > earlier.
> >
> > Som
DP_QUIRK_FORCE_DPCD_BACKLIGHT) },
> };
>
> Also note that I think just about every panel on that list supports the Intel
> HDR backlight interface, so it's -possible- that the VESA interface could be
> broken on these panels. But, that would be a lot of different panels from
> different vendo
me gather a list of OUIs that we need to add to the
quirk? I can follow up with Puthikorn about the relevant Chromebooks,
but I don't know what other types of laptops are using this driver.
Thanks for your time,
Kevin Chowski
On Fri, Sep 18, 2020 at 12:16 PM Puthikorn Voravootivat
wrote:
>
>
. 0 ][7 ... 0]
> [ 8 MSB ][][N LSB]
>
> so you couldn't even treat the value as a regular big endian
> thing. Instead, if you squint a bit, it now looks like a funky
> little endian value. So we're deep into some mixed endian land
> where nothing makes sense anymore.
>
nouveau. We probably can figure out some other solution for handling this
> quirk
> if this isn't possible, but could we maybe use the panel's OUI here and add a
> quirk to drm_dp_helper.c instead?
>
> On Thu, 2020-09-17 at 11:09 -0600, Kevin Chowski wrote:
> > We have observed
dpcd` on my laptop to verify
that the registers were being set according to what the actual hardware
expects; I also observe that the backlight is noticeably brighter with
this patch.
Signed-off-by: Kevin Chowski
---
.../drm/i915/display/intel_dp_aux_backlight.c | 34 +++
drivers/g
rk
> if this isn't possible, but could we maybe use the panel's OUI here and
> add a
> quirk to drm_dp_helper.c instead?
>
> On Thu, 2020-09-17 at 11:09 -0600, Kevin Chowski wrote:
> > We have observed that Google Pixelbook's backlight hardware is
> > interpretting these
functionality,
so unless we can find more examples of laptops wanting MSB it
currently looks like Pixelbook is the outlier.
On Thu, Sep 17, 2020 at 11:28 AM Jani Nikula
wrote:
>
> On Thu, 17 Sep 2020, Kevin Chowski wrote:
> > We have observed that Google Pixelbook's backli
