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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2022-10-11 17:07:12 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2022-10-14 09:51:12 +0200 |
| commit | d405bc2c3d82126f58e143708af55105876cf6af (patch) | |
| tree | 673584a0aa9678a79fc02c3886e44ac1a55e2009 /drivers/gpu/drm/drm_format_helper.c | |
| parent | 4bbb9061081c49ded4908c7716a03f7faf4eb65d (diff) | |
| download | linux-d405bc2c3d82126f58e143708af55105876cf6af.tar.gz linux-d405bc2c3d82126f58e143708af55105876cf6af.tar.bz2 linux-d405bc2c3d82126f58e143708af55105876cf6af.zip | |
drm/ofdrm: Support big-endian scanout buffers
All DRM formats assume little-endian byte order. On big-endian systems,
it is likely that the scanout buffer is in big endian as well. Update
the format accordingly and add endianness conversion to the format-helper
library. Also opt-in to allocated buffers in host format by default.
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221011150712.3928-6-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/drm_format_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_format_helper.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c index e2f76621453c..653a5821dd53 100644 --- a/drivers/gpu/drm/drm_format_helper.c +++ b/drivers/gpu/drm/drm_format_helper.c @@ -660,6 +660,11 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t d drm_fb_xrgb8888_to_rgb565(dst, dst_pitch, src, fb, clip, false); return 0; } + } else if (dst_format == (DRM_FORMAT_RGB565 | DRM_FORMAT_BIG_ENDIAN)) { + if (fb_format == DRM_FORMAT_RGB565) { + drm_fb_swab(dst, dst_pitch, src, fb, clip, false); + return 0; + } } else if (dst_format == DRM_FORMAT_RGB888) { if (fb_format == DRM_FORMAT_XRGB8888) { drm_fb_xrgb8888_to_rgb888(dst, dst_pitch, src, fb, clip); @@ -678,6 +683,11 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t d drm_fb_xrgb8888_to_xrgb2101010(dst, dst_pitch, src, fb, clip); return 0; } + } else if (dst_format == DRM_FORMAT_BGRX8888) { + if (fb_format == DRM_FORMAT_XRGB8888) { + drm_fb_swab(dst, dst_pitch, src, fb, clip, false); + return 0; + } } drm_warn_once(fb->dev, "No conversion helper from %p4cc to %p4cc found.\n", |