DRM formats are defined to be little-endian, unless the
DRM_FORMAT_BIG_ENDIAN flag is set. Hence writes of multi-byte pixel
values need to take endianness into account.
Introduce a swap32() helper to byteswap 32-bit values, and a
cpu_to_le32() helper to convert 32-bit values from CPU-endian to
little-endian, and use the latter in the various pattern fill functions
for 32-bit formats.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
v5:
- Add Reviewed-by,
v4:
- Use new HAVE_BIG_ENDIAN symbol,
v3:
- Increase indentation after definition of cpu_to_le32(),
v2:
- Add Acked-by,
- Add swap32() intermediate helper,
- Add __ARM_BIG_ENDIAN and __s390__.
8cb6d837cc