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<
KotCzarny>
hmm, by any chance someone has a fix for hanging spi driver on 3.4?
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<
mru>
have you tried 5.1?
<
KotCzarny>
i'm stuck with 3.4 for this project
<
mru>
you could still try it and see if it's been fixed
<
mru>
anything else would be a waste of time
<
KotCzarny>
yes, mainline was fixed, but i suspect whole spi infra changed a lot
<
mru>
was the problem explicitly fixed? or incidentally through other changes?
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<
KotCzarny>
whole sunxi-spi was a rewrite i guess
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<
mru>
find out for sure
<
KotCzarny>
for now i'm trying workaround (ie. limiting transfer to 32bytes max)
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<
KotCzarny>
yup. seems to be it
<
KotCzarny>
using transfers up to 64 bytes i didnt manage to hang the spi
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<
KotCzarny>
printf("[w=%d,bpp8=%d,x=%d,y=%d,o=%d]\n",w,bpp8,X,Y,(X+Y*w)*bpp8);m
<
KotCzarny>
[w=480,bpp8=2,x=0,y=319,o=-320]
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<
lurchi_>
KotCzarny: overflow, because X is a type to small?
<
KotCzarny>
all unsigned ints
<
KotCzarny>
unless preprocessing does something funky on the code
<
lurchi_>
%d is signed int, use %u
<
KotCzarny>
but it gets segv, so it's really doing some overflow, but how and why?
<
KotCzarny>
#define putp(X,Y,C) memcpy(buf+(X+Y*w)*bpp8, C, bpp8)
<
KotCzarny>
this is the macro
<
megi>
view the preprocessed code
<
KotCzarny>
for some reason Y*w gets out as negative
<
KotCzarny>
even if both Y and w are uints
<
KotCzarny>
megi: how?
<
lurchi_>
i.e. substitute "-c " with "-E "
<
lurchi_>
and use a proper "-o outfile"
<
megi>
-save-temps may also work
<
KotCzarny>
nothing unusual
<
KotCzarny>
ie. types arent changed automagically, and nothing resets the numbers
<
megi>
assembly also looks ok?
<
KotCzarny>
i cant read assembly
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<
megi>
put the .s file from -save-temps somewhere
<
megi>
pastebin or smth
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<
KotCzarny>
shall i use any debuggin flag to make it more readable?
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<
megi>
-O2 should be fine
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<
KotCzarny>
[w=480,x=0,y=319,y*w=-160]
<
mru>
and the C source?
<
KotCzarny>
you mean .i file?
<
mru>
no, the .c file
<
KotCzarny>
same dir
<
KotCzarny>
macro is at line 36
<
KotCzarny>
and weird use of it at line 94
<
megi>
use the guards
<
mru>
yes, that's probably it
<
megi>
(x)+(y)*(w) etc
<
KotCzarny>
hmm, could be it, lets see
<
mru>
it's definitely wrong without
<
KotCzarny>
yup, worked, but what was the reason?
<
KotCzarny>
it was working fine before i put display in rotated mode
<
mru>
your X+y*w expands to X+h-1*w
<
KotCzarny>
thanks a lot, you've saved me from headdesk
<
KotCzarny>
now the only obstacle is enabling touch via the samee spi
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<
jernej>
clementp[m]: Thanks for taking care of H6 DMA and IR
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