fbdev: atafb: Add support for SuperVidel's SuperBlitter

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The SuperVidel graphics FPGA includes a hardware blitter (bit block
transfer engine) operating within the SuperVidel DDR2 video RAM.

Two versions of this blitter exist. Later versions (>= 9) of the
SuperVidel firmware support an asynchronous command FIFO, older
versions must be polled for command completion.

Add hardware-accelerated copyarea, fillrect and imageblit fb
operations (falling back to the non-accelerated versions for
anything that exceeds blitter capabilities).

Signed-off-by: Miro Kropacek <miro.kropacek@gmail.com>
Reviewed-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Link: https://lists.debian.org/debian-68k/2026/08/msg00000.html
Signed-off-by: Helge Deller <deller@gmx.de>

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Miro Kropacek 2026-08-20 10:28:37 +12:00 • committed by Helge Deller

parent 51df976c32

commit d463633d63

1 changed files with 197 additions and 0 deletions

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drivers/video/fbdev/atafb.c

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