@@ -413,6 +413,25 @@ int drm_format_plane_height(int height, uint32_t format, int plane)
}
EXPORT_SYMBOL(drm_format_plane_height);
+/**
+ * drm_format_is_yuv - check that the format uses a YUV colorspace
+ * @format: pixel format
+ *
+ * Returns:
+ * A boolean indicating whether the format uses a YUV colorspace.
+ */
+bool drm_format_is_yuv(uint32_t format)
+{
+ const struct drm_format_info *info;
+
+ info = drm_format_info(format);
+ if (!info)
+ return false;
+
+ return info->is_yuv;
+}
+EXPORT_SYMBOL(drm_format_is_yuv);
+
/**
* drm_format_info_block_width - width in pixels of block.
* @info: pixel format info
@@ -157,6 +157,7 @@ int drm_format_horz_chroma_subsampling(uint32_t format);
int drm_format_vert_chroma_subsampling(uint32_t format);
int drm_format_plane_width(int width, uint32_t format, int plane);
int drm_format_plane_height(int height, uint32_t format, int plane);
+bool drm_format_is_yuv(uint32_t format);
unsigned int drm_format_info_block_width(const struct drm_format_info *info,
int plane);
unsigned int drm_format_info_block_height(const struct drm_format_info *info,
This adds a new helper to check whether the format described by its fourcc code uses a YUV colorspace, by returning the is_yuv entry for the DRM info entry matching that format. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> --- drivers/gpu/drm/drm_fourcc.c | 19 +++++++++++++++++++ include/drm/drm_fourcc.h | 1 + 2 files changed, 20 insertions(+)