From: Ville Syrjälä ville.syrjala@linux.intel.com
Provide a small helper to convert the blob length in bytes to the number of LUT entries.
v2: Add kerneldoc (Daniel)
Cc: Daniel Vetter daniel.vetter@ffwll.ch Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch --- include/drm/drm_color_mgmt.h | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/include/drm/drm_color_mgmt.h b/include/drm/drm_color_mgmt.h index b3b6d302ca8c..44f04233e3db 100644 --- a/include/drm/drm_color_mgmt.h +++ b/include/drm/drm_color_mgmt.h @@ -38,6 +38,18 @@ void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc, int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, int gamma_size);
+/** + * drm_color_lut_size - calculate the number of entries in the LUT + * @blob: blob containing the LUT + * + * Returns: + * The number of entries in the color LUT stored in @blob. + */ +static inline int drm_color_lut_size(const struct drm_property_blob *blob) +{ + return blob->length / sizeof(struct drm_color_lut); +} + enum drm_color_encoding { DRM_COLOR_YCBCR_BT601, DRM_COLOR_YCBCR_BT709,