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| author | Thierry Reding <treding@nvidia.com> | 2021-06-10 13:12:34 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2021-08-16 12:17:56 +0200 |
| commit | 32a4eb04d59ae8d5bb5baa5a8528e31094ae8e84 (patch) | |
| tree | 631593aae617b5c66626c1b56465cdfe6935af53 /include/uapi/drm/drm_fourcc.h | |
| parent | drm: unexport drm_ioctl_permit (diff) | |
| download | linux-32a4eb04d59ae8d5bb5baa5a8528e31094ae8e84.tar.xz linux-32a4eb04d59ae8d5bb5baa5a8528e31094ae8e84.zip | |
drm/fourcc: Add macros to determine the modifier vendor
When working with framebuffer modifiers, it can be useful to extract the
vendor identifier or check a modifier against a given vendor identifier.
Add one macro that extracts the vendor identifier and a helper to check
a modifier against a given vendor identifier.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210610111236.3814211-1-thierry.reding@gmail.com
Diffstat (limited to 'include/uapi/drm/drm_fourcc.h')
| -rw-r--r-- | include/uapi/drm/drm_fourcc.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 9f4bb4a6f358..45a914850be0 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -373,6 +373,12 @@ extern "C" { #define DRM_FORMAT_RESERVED ((1ULL << 56) - 1) +#define fourcc_mod_get_vendor(modifier) \ + (((modifier) >> 56) & 0xff) + +#define fourcc_mod_is_vendor(modifier, vendor) \ + (fourcc_mod_get_vendor(modifier) == DRM_FORMAT_MOD_VENDOR_## vendor) + #define fourcc_mod_code(vendor, val) \ ((((__u64)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | ((val) & 0x00ffffffffffffffULL)) |