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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-11-09 15:36:36 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-12-13 10:19:36 +0300 |
| commit | b9fb2a21ac8058965a6b3fcae736cfa7f411d6eb (patch) | |
| tree | 6feac870828951a6cddc78ddbc89260af63906ea /include/uapi | |
| parent | 697cc9c8a2c39a42188840e35e212230a240f9e4 (diff) | |
| download | linux-b9fb2a21ac8058965a6b3fcae736cfa7f411d6eb.tar.xz | |
drm_fourcc: Document linear modifier
Not setting the fb modifiers flag is something different from setting
the fb modifiers to 0 (which means explicitly linear). We kinda failed
to document that properly. Spotted by Kristian.
Cc: hoegsberg@google.com
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1478694996-4200-1-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/drm/drm_fourcc.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index a5890bf44c0a..0ccef30e56b6 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -172,6 +172,16 @@ extern "C" { * authoritative source for all of these. */ +/* + * Linear Layout + * + * Just plain linear layout. Note that this is different from no specifying any + * modifier (e.g. not setting DRM_MODE_FB_MODIFIERS in the DRM_ADDFB2 ioctl), + * which tells the driver to also take driver-internal information into account + * and so might actually result in a tiled framebuffer. + */ +#define DRM_FORMAT_MOD_LINEAR fourcc_mod_code(NONE, 0) + /* Intel framebuffer modifiers */ /* |