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<plaes>
karlp: it's jaganteki who applies stuff
<plaes>
there's also another issue with sun4i/sun7i musb driver that's waiting for apply :(
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<catphish>
avph: afaik it'll only be limited by the size of the sram in that case (no worries about clobbering FEL stack), though i don't know if any artificial limits are imposed
<KotCzarny>
a64 has a bit bigger sram afair, might be a interesting testcase
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<catphish>
anyone happen to know how i get uint32xN_t in my gcc?
<catphish>
does seem to come stdint
<catphish>
ah got it i think, #include <arm_neon.h>
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<KotCzarny>
didnt you say that you had vsync already working?
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<catphish>
i did, i thought i did :(
<catphish>
but it seems i did a poor job of it
<catphish>
i'm just trying to implement a simple double buffer, but i seem to keep accidentally writing to the active buffer
<KotCzarny>
make it a pointer?
<KotCzarny>
that only changes when you are dumping the contents
<catphish>
i think the problem is that it's not 100% clear when the hardware switches to the new buffer
<catphish>
i use a simple double buffer, once per frame, i give the hardware a pointer to the complete, just-rendered frame, and the software a pointer to put the next frame (which unfortunately is the frame previously pointed to by the hardware)
<catphish>
the solution is probably just a third buffer
<catphish>
current frame (accessed by hardware), next frame (accessed by software) and previous frame (unused, in case hardware is still accessing it)
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<catphish>
that's fixed it :)
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<karlp>
plaes: the one I was pointing to was a proper regression though, that's what was bugging me :|
<plaes>
yeah, both issues are
<plaes>
the one I pointed out breaks musb on A10/A20
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<karlp>
I thought I saw some musb patches just applied
<jero>
Net147, I'm trying to get mali r6p2 started on A20 with mainline 4.20, with the eglfs_kms Qt integration, but no luck so far. I saw you were active with it, are there hints it should work ?
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<jero>
driver loaded, blobs installed, qt configured but it fails to start with Failed to load EGL device integration "eglfs_kms". looking at strace it's succesful in opening all the libraries though
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<jernej>
I think it is alright. I found it in sound maintainer repo.
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<Net147>
jero: can you provide the strace?
<jero>
Net147, I'll try to, I'd need to come back to that build. I did some other tries with the fbdev driver variant, and noticed the only way to make it work on 4.20 was to have CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM=y
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<Net147>
jero: you were using r6p2 wayland blob before right?
<jero>
yes, r6p2 wayland. let me check if I kept a trace in my buffer
<jero>
but that failed, my buildroot install didn't build/deploy that eglfs-kms-integration I think
<Net147>
jero: okay, then you need to check in Qt 5 configure output
<jero>
do you know if there a difference (performance wise) between the fbdev and kms/wayland integrations with qt ?
<jero>
Net147, thanks for the heads up. I got messed by this kms-egldevice think
<jero>
thing*
<Net147>
jero: it's been more than a year since a stopped using fbdev so I don't remember well, but I think it is a bit faster. hard to notice on my tiny 480x272 LCD though.
<jero>
Net147: I'm using a 800x480 lcd too. do you know if a QT_QPA_EGLFS_KMS_CONFIG json is needed for Qt ?
<Net147>
jero: works fine without it
<jero>
I'll give it a try
<Net147>
jero: another thing to watch out for is it loading mesa libraries
<Net147>
jero: either make sure it isn't deployed in your rootfs or you can rename/move them
<jero>
Net147: I don't have any mesa libs in my build so I think that should be ok.
<Net147>
jero: other benefits of using KMS - console output doesn't interfere with graphics, mulitple monitor support, screen resolution is dynamic instead of fixed
<jero>
Net147: good points
<Net147>
jero: are you using resistive touch screen?
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<jero>
Net147: no, it's a capacitive in my case.
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