drm/mgag200: Fix big-endian support

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commit 6cb31fba13 upstream.

Unlike the original, deleted Matrox mga driver, the new mgag200 driver
has the XRGB frame-buffer byte swapped on big-endian "RISC"
systems. Fix by enabling byte swapping "PowerPC" OPMODE for any
__BIG_ENDIAN config.

Fixes: 414c453106 ("mgag200: initial g200se driver (v2)")
Signed-off-by: René Rebe <rene@exactco.de>
Cc: stable@kernel.org
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20251208.141827.965103015954471168.rene@exactco.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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René Rebe 2025-12-08 14:18:27 +01:00 • committed by Greg Kroah-Hartman

parent 5a81095d3e

commit 106af2a55b

1 changed files with 25 additions and 0 deletions

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drivers/gpu/drm/mgag200/mgag200_mode.c

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