diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2018-03-15 18:23:38 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2018-03-16 16:44:01 +0300 |
| commit | 41204dfeed93f2c7668cf8aa5086bcd96eccaa35 (patch) | |
| tree | cb7f210a29c95a520eaf7ed0c0a4f99ac3efae45 /include/drm | |
| parent | d2a24edb532e6599755fc1bbd080cf57e0dd72c3 (diff) | |
| download | linux-41204dfeed93f2c7668cf8aa5086bcd96eccaa35.tar.xz | |
drm: Introduce drm_color_lut_size()
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>
Link: https://patchwork.freedesktop.org/patch/msgid/20180315152338.7248-1-ville.syrjala@linux.intel.com
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_color_mgmt.h | 12 |
1 files changed, 12 insertions, 0 deletions
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, |