Geert Uytterhoeven wrote:

Ywrap has been working fine with amifb since ages (unless someone broke it very
recently).

 

We are talking about scrollmode = SCROLL_WRAP_MOVE ?
I put printk()s in the imageblit(), copyarea() and pan_display() 
functions of
cyblafb and in updatescrollmode() of fbcon.c. A "cat somefile" after loading
cyblafb produces the following log, you can see that the vyres == 2048 
and that
the maximum yoffset passed to pan_display() is 2048-768==1280. To call
that mode SCROLL_WRAP_SOMETHING the maximum yoffset should be
2048-16==2032. In reality it seems to be some kind of SCROLL_BROKEN_PAN ;-)


[43673.343266] cyblafb: CyblaFB version 0.56 initializing
[43673.345864] cyblafb: Pixmap size = 8188, alignement = 1
[43673.348147] ACPI: PCI Interrupt 0000:01:00.0[A] -> Link [LNKA] -> GSI 
11 (level, low) -> IRQ 11
[43673.351810] cyblafb: region 0x3c0/0x20 already reserved
[43673.353941] cyblafb: framebuffer size = 8192 Kb
[43673.356006] cyblafb: region 0xe1800000/0x800000 already reserved
[43673.358274] cyblafb: detected startup mode: fbset -g 1024 768 1024 
??? 32 -t 15389 160 24 29 3 136 6
[43673.366685] cyblafb: Switching to new mode: fbset -g 1024 768 1024 
2048 32 -t 15389 160 24 29 3 136 6
[43673.368795] cyblafb: pixclock = 129.96 MHz, k/m/n 0 b 6e
[43673.368858] Scrollmode = SCROLL_WRAP_MOVE

[...]

[43674.319558] cyblafb: panning to xoffset 0, yoffset 1200
[43674.319836] cyblafb: blit to 0 / 1952, w/h 1024 / 16
[43674.319997] cyblafb: panning to xoffset 0, yoffset 1216
[43674.320260] cyblafb: blit to 0 / 1968, w/h 1024 / 16
[43674.320423] cyblafb: panning to xoffset 0, yoffset 1232
[43674.320710] cyblafb: blit to 0 / 1984, w/h 1024 / 16
[43674.320881] cyblafb: panning to xoffset 0, yoffset 1248
[43674.321147] cyblafb: blit to 0 / 2000, w/h 1024 / 16
[43674.321307] cyblafb: panning to xoffset 0, yoffset 1264
[43674.321582] cyblafb: blit to 0 / 2016, w/h 1024 / 16
[43674.321769] cyblafb: panning to xoffset 0, yoffset 1280
[43674.322050] cyblafb: blit to 0 / 2032, w/h 1024 / 16
[43674.322471] cyblafb: blit to 0 / 0, w/h 1024 / 16
[43674.322902] cyblafb: blit to 0 / 16, w/h 1024 / 16
[43674.344359] cyblafb: blit to 8 / 32, w/h 1016 / 16
[43674.346218] cyblafb: blit to 0 / 48, w/h 1024 / 16
[43674.348017] cyblafb: blit to 0 / 64, w/h 1024 / 16
[43674.349780] cyblafb: blit to 0 / 80, w/h 1024 / 16
[43674.351794] cyblafb: blit to 0 / 96, w/h 1024 / 16
[43674.353558] cyblafb: blit to 0 / 112, w/h 1024 / 16

[...]

[43674.647018] cyblafb: blit to 0 / 1984, w/h 1024 / 16
[43674.647184] cyblafb: panning to xoffset 0, yoffset 1248
[43674.647472] cyblafb: blit to 0 / 2000, w/h 1024 / 16
[43674.647646] cyblafb: panning to xoffset 0, yoffset 1264
[43674.647918] cyblafb: blit to 0 / 2016, w/h 1024 / 16
[43674.648085] cyblafb: panning to xoffset 0, yoffset 1280
[43674.648351] cyblafb: blit to 0 / 2032, w/h 1024 / 16
[43674.648767] cyblafb: blit to 0 / 0, w/h 1024 / 16
[43674.649068] cyblafb: blit to 0 / 16, w/h 16 / 16
[43674.668394] cyblafb: blit to 16 / 16, w/h 1008 / 16
[43674.670569] cyblafb: blit to 0 / 32, w/h 1024 / 16
[43674.672304] cyblafb: blit to 0 / 48, w/h 1024 / 16

cu,
 knut


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