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<anarsoul|2>
mripard: any plans to add support for DM_MMC and DM_USB to A64? I get warning that board support will be removed if it's not done by v2019.04
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<anarsoul|2>
I see that Jagan is working on DM_USB
<anarsoul|2>
but nothing so far for DM_MMC
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<catphish>
yay, usb works now :)
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<wens>
martinayotte: h5 emmc not working after a64 emmc DDR patch?
<wens>
martinayotte: haven't found time to test it yet
<wens>
mripard: the atomic_async_* callbacks in drm seem interesting
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<karlp>
anarsoul: that's for ~all the sunxi boards isn't it? not just a64.
<fALSO>
megi, now im trying to bitbang SPI
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<montjoie>
just in case, I have released my helper script for testing my drivers (and also building and booting linux on lots of targets) https://github.com/montjoie/bbci any comment welcome
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<catphish>
it seems i want a really specific combination of features that the H3's DE2 isn't capable of, i want to take 3-4 layers, scale them 4x larger using nearest-pixel, then alpha blend them, it's really frustrating because these features are supported independently but there's no way to combine them
<catphish>
because UI channels only support blurry linear scaling
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<catphish>
the only way this might work is making a horifically long display pipeline using both mixers
<catphish>
but it seems insane, sadly inside each mixer device, the blending happens after the scaling, and only one of the channels supports the type of scaling i want
<catphish>
so the only option seems to be to blend them at lowres, then write the result back to memory, and load it into the second mixer for scaling
<catphish>
there's a certain madness to this, but the only other option is to do all the blending in the cpu
<KotCzarny>
ya, might be faster too
<KotCzarny>
because you blend smaller data
<KotCzarny>
as usual benchmarking could provide some hints
<catphish>
maybe i'll try this method
<mru>
if you're feeling extra masochistic, you could use the gpu
<KotCzarny>
he doesnt use linux
<mru>
I know
<KotCzarny>
and blob is only for x/fb
<mru>
hence the extra
<catphish>
lol i looked at the gpu, i assumed i didn't have any chance of getting it working
<catphish>
there *is* an open source driver
<KotCzarny>
catphish: boot some linux on one core and let it churn as a slave
<mru>
it's probably been reverse engineered enough to do what you want
<catphish>
well i'll try this both-mixers thing, maybe writing the intermediate frame back to dram isn't as bad as i think
<KotCzarny>
\
<catphish>
all i'm doing really is using mixer1 as a coprocessor
<catphish>
then doing normal graphics output / scaling with mixer0
<catphish>
still not sure where my project lies on a "pointless and insane" to "useful and cool" scale, but thanks for the support :)
<mru>
things can be pointless and cool at the same time
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<catphish>
true, hopefully i'll have something resembling a game running on it coon
<catphish>
*soon
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<anarsoul>
karlp: yes
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<jernej>
catphish: there is a way to blend before scaling using premultiply and sublayers, but sadly only for UI planes
<jernej>
VI planes also support sublayers, but sadly no premultiplying
<jernej>
so in this case top most sublayer would be completely visible, while those behind would be visible only in a part which is not covered by upper sublayer
<catphish>
jernej: yeah i looked at the "sublayers" but it seems that video layers don't support opacity at all :(
<catphish>
the main annoyance here is UI layers having inferior scaling
<jernej>
that is fixed in DE3 :)
<jernej>
I mean VI transparency
<catphish>
jernej: the more i think about it, the more i'm happy with the idea of using both mixers, one for blending, and one for scaling, giving the CPU access to the intermediate image
<catphish>
but it would be much more efficient if the video layer supported transparency on its sublayers
<jernej>
since you are planing to write writeback driver, you can write one for Linux too :)
<jernej>
yeah, I'm very curious what is the reason for limited sublayers
<catphish>
alternatively, i could upgrade to a H6 if DE3 supports this better
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<catphish>
i'll try the writeback idea first, essentially just using the spare mixer to replace my software blender
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<catphish>
i doubt i have the skill to contribute anything useful back to linux yet :)
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<tllim>
@catphish, if you are interest in H6 baremetal development, I can provide a PINE64's H6 SBC to you. Just PM your address and tel (for shipping purpose).
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<catphish>
tllim: thanks! i'm not at all sure whether to switch, and i also fear you're on the other side of the planet :)
<catphish>
for now i'm gonna play with the DE2 writeback
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