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<body><span class="vcard"><a class="email" href="mailto:mike@altlinux.org" title="Michael Shigorin <mike@altlinux.org>"> <span class="fn">Michael Shigorin</span></a>
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<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [BYT] Backlight support for Dell Venue 8 Pro"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85977">bug 85977</a>
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<td>mike@altlinux.org
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [BYT] Backlight support for Dell Venue 8 Pro"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85977#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [BYT] Backlight support for Dell Venue 8 Pro"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85977">bug 85977</a>
from <span class="vcard"><a class="email" href="mailto:mike@altlinux.org" title="Michael Shigorin <mike@altlinux.org>"> <span class="fn">Michael Shigorin</span></a>
</span></b>
<pre>(In reply to Jan-Michael Brummer from <a href="show_bug.cgi?id=85977#c0">comment #0</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=109061" name="attach_109061" title="Hack to add backlight support for DV8P">attachment 109061</a> <a href="attachment.cgi?id=109061&action=edit" title="Hack to add backlight support for DV8P">[details]</a></span>
> Hack to add backlight support for DV8P
>
> Backlight support for Dell Venue 8 Pro (8086:0f31) tablet is currently
> missing. The attached patch adds support for it in a ugly way and needs to
> be cleanup by someone more familiar with intel graphic. It is based on a
> hack made by Jon Pry for his Asus T100.</span >
Got Aava Inari 8 (8086:0f31 too) with backlight level fixed at boot (and a
weird "milk flooding" when DPMS kicks in...) -- should it be safe to try your
patch given the same SoC but quite different panel and probably firmware
(64-bit one)?
The magic constants in both
<a href="https://github.com/jonpry/t100_patches/blob/master/3.17.patch">https://github.com/jonpry/t100_patches/blob/master/3.17.patch</a>
and
<a href="https://github.com/AdamWill/baytrail-m/blob/master/kernel/baytrail-backlight.patch">https://github.com/AdamWill/baytrail-m/blob/master/kernel/baytrail-backlight.patch</a>
look the same at least and the panel specific delay handling seems to have been
dropped in the latter but that's about as much as I can read in interdiff.</pre>
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