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<oliv3r>
mripard_: Hey maxime! :) With your ssd1307fb driver, did you ever manage to use it 'mmaped'? I can read/write data from/to it perfectly using /dev/fb0, but when i memory map it, i get zero data :(
<oliv3r>
i know the ssd1307fb is somewhat 'strange' as it uses regular memory as video_memory so i'm sure i'm misunderstanding something there; i did try implementing the fb_mmap function as the vfb.c does to no avail
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<oliv3r>
mripard_: hmm, i 'figured it out' when you write to the display, you call update_display, but with mmap, you can't know when to update, so there's no update at all :S
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<ferz>
I have trouble using meta-sunxi for Yocto and allwinner lime2
<ferz>
inlined from 'open_tmpfile' at /home/user/mnt/yocto2/builds/olimex/output/work/x86_64-linux/byacc-native/20140422-r0/byacc-20140422/main.c:582:5: | /usr/include/x86_64-linux-gnu/bits/fcntl2.h:50:24: error: call to '__open_missing_mode' declared with attribute error: open with O_CREAT in second argument needs 3 arguments | __open_missing_mode ();
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<mripard_>
oliv3r: yes, there is.
<mripard_>
it uses page faults to know when you write to memory
<mripard_>
have you seen the latest patches?
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<Vanfanel>
ssvb: sorry if it has been asked, but, has scaler layer code merged upstream in the Linux kernel? In other words, does it work with 3.19, current 4 RC, etc?
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<Vanfanel>
I know there's simple framebuffer support, but I can't find any mention to scaler layers
<ssvb>
that would be a kms driver
<ssvb>
which is not available yet
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<Vanfanel>
ssvb: there are scaler layers in 3.4.x without KMS
<ssvb>
Vanfanel: OK, then you should know that this is what is used in the mainline kernel
<ssvb>
Vanfanel: (KMS planes)
<Vanfanel>
ahhhh!! I understand.. these custom scaler layers won't go mainline...
<ssvb>
exactly
<Vanfanel>
great...
<Vanfanel>
And I guess KMS is simply going to wrap around the sunxi planes, right?
<ssvb>
if you mean the hardware feature, then yes
<ssvb>
the existing sunxi disp code in the kernel is pretty horrible and can't be used as-is, so it has to be reimplemented in a clean way
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<Vanfanel>
ssvb: so, let's say I use your disp functions (like the like I pointed to). These in turn use ioctl calls under the hood. Will I be able to keep using your disp functions when the sunxi code is merged? Or will these ioctls stop working?
<paulk-collins>
Vanfanel, I'm pretty sure they'll stop working -- that logic is specific to the sunxi-3.4 disp kernel driver and it is expected to become a proper KMS driver in upstream
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<Vanfanel>
paulk-collins: thanks :)
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<cooper>
I'm terribly sorry, but I did an awful, awful thing.
<cooper>
I actually went and *gasp* read the chatlog for this channel for the past few days wondering why atsampson wasn't updating his page anymore.
<ssvb>
Cooper: and?
<cooper>
On a lighter note, ssvb suggested I put my LinkSprite PcDuino3 Nanos to good use, helping out with the dram controller calibration thing.
<cooper>
I'd *love* to do just that, though I can only use one of them - the other one's a fileserver.
<cooper>
But you're going to have to help me figure out what I need to do and how I do it.
<cooper>
Like, do I need to watch the screen as the limatester (which I think is being used) is running?
<ssvb>
Cooper: one board is fine, also you probably can swap the boards once you are done with the first one :-)
<cooper>
Indeed. :)
<ssvb>
it is not necessary to watch the screen :-)
<cooper>
ssvb: Excellent. Because there's no screen attached.
<ssvb>
yes, you can try to setup things as instructed there and ask for help if something is not clear
<ssvb>
and it looks like I need to update the instructions to explain how to configure the modern mainline u-boot
<cooper>
Well, I'm already on mainline u-boot, so that should be a breeze.
<cooper>
Should I repeat atsampson's tests with my boards, or should I try different settings?
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<ssvb>
it would be great if you could test faster MBUS clock speed
<cooper>
Well, I guess someone's got to do it. ;-)
<ssvb>
also repeating the "pcDuino3 Nano, JEDEC timings, 648MHz, EMR1=0x04, ZQ=0x29, DCDC3=1.325V" setup on your board(s) would be interesting
<cooper>
Sure. I'll start with that. Have sort of a baseline.
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<ssvb>
I guess, it might be a bit difficult to setup booting from NFS
<cooper>
Is that a requirement?
<cooper>
I would much prefer sd card booting.
<cooper>
And a samba mount to my fileserver to drop off the results.
<ssvb>
well, sd card booting might work too
<ssvb>
except that you may get filesystem corruptions as a result of running the test
<ssvb>
and also tracking the progress in realtime is tricky
<cooper>
That sounds like a good enough reason.
<cooper>
(the corruption bit that is. Not too worried about realtime progress)
<ssvb>
now I think that we might try to setup a server in the Internet to coordinate the DRAM calibration activity and also store the results, this would work instead of NFS :-)
<ssvb>
but needs a bit of work implementing the necessary changes
<cooper>
Which our boards would boot off...?
<cooper>
Sounds scary.
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<ssvb>
the boards could boot from the SD card, but upload the test results to the server in the Internet
<ssvb>
in this case, the SD card can be mounted as read-only :-)
<ssvb>
we also get realtime progress tracking and all the bells and whistles
<cooper>
But if that's possible I can use my samba mount for the results and wouldn't need to deal with nfs at all.
<cooper>
I can keep using the boards as I've been doing thus far.
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<ssvb>
Cooper: if you can setup a bootable sd card, which mounts the samba share somewhere, then you can use this too
<cooper>
ssvb: That's what I'm currently doing, so that would be very much preferred. No need for additional setup on that end.
<ssvb>
ok, just try to adapt the existing instructions and feel free to ping me if you get stuck
<ssvb>
and I will still try to implement a simple server in the Internet (to optionally use instead of a network share), let's see if this is going to fly :-)
<cooper>
I'll set this up tomorrow and keep you (and the rest of the channel, obviously) posted on my progress.
<ssvb>
thanks!
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<ssvb>
Vanfanel: it's as paulk-collins said
<ssvb>
however the support of legacy sunxi-3.4 disp interface can be detected at runtime
<ssvb>
in fact, that's what the xf86-video-fbturbo ddx is doing
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<cooper>
ssvb: Would a similar process be possible with an Odroid-C1 by any chance?
<cooper>
ssvb: Or would that require modified programs?
<cooper>
ssvb: Just asking because I'm planning on buying 15 of them this summer.
<Vanfanel>
ssvb: I don't understand. If it's a 3.4 kernel, it will have legacy sunxi interface, and if it's a >3.19 kernel it will only have KMS, right?
<Wizzup>
Cooper: are you sure you want C1's?
<Wizzup>
they don't seem to look too good wrt (mainline) support
<cooper>
Wizzup: I want to play with clustering. They provide the best combination of cores/corespeed/memory amount/price that I can find so far.
<cooper>
Mainline, while preferable, isn't _that_ important to me.
<cooper>
They cost about as much as a PcDuino3 Nano, but have 4 cores.
<cooper>
The nano has 2.
<cooper>
If you can think of a better board, I'm all ears.
<cooper>
Oh, and the new Pi is much less power-efficient.
<Wizzup>
I just think it'll be a painful experience
<Wizzup>
I found the odroid provided kernels quite unstable
<Wizzup>
at least for the u3 and u2
<Wizzup>
but ymmv
<cooper>
Really? My U2 was doing great.
<Wizzup>
Lots of backtraces and segfaults when compiling a lot.
<Wizzup>
random too, if I might add
<cooper>
I run Gentoo...
<Wizzup>
me too, exclusively.
<Wizzup>
now with mainline it runs ok
<cooper>
Which one? U3?
<cooper>
Using the kernel discussed on that thread by LiquidAcid?
<Wizzup>
what...thread
<Wizzup>
just the odroid provided kernels at the time
<Wizzup>
and you'll have similar issues for the C1, since it has no upstream support
<Wizzup>
is all I am saying :)
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<cooper>
Well I do appreciate the warning. I've got 1 C1 here right now so I can mess around with it a bit before making a purchase for the full number.
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<doclambda>
ssvb: checked mainline 4.0-rc4 with the "new" boot.cmd from the wiki and it works perfectly!
<doclambda>
thanks!
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<ssvb>
you are welcome
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<cooper>
The Orange Pi Mini 2 has an AllWinner H3 on it which is said to be a quad V7 @ 1.6 GHz. That would work for me, but on the sunxi wiki I see no mention of the H3 CPU...
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<jemk>
lol, new commit for media-codec-lib: "update library to fix some issue"
<jemk>
they stripped all symbols...
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<wens>
Cooper: no one has one yet
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