media: v4l2-ctrls: Add RGB color effects control

Add V4L2_COLORFX_SET_RGB color effects control, V4L2_CID_COLORFX_RGB
for RGB color setting.

with two mirror changes:
- change 0xFFFFFF to 0xffffff
- fix comments 2^24 to 2^24 - 1

[hverkuil: dropped spaces around + with V4L2_CID_BASE for consistency]

Signed-off-by: Dillon Min <dillon.minfei@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/Documentation/userspace-api/media/v4l/control.rst b/Documentation/userspace-api/media/v4l/control.rst
index f8d0b923da20..3eec65174260 100644
--- a/Documentation/userspace-api/media/v4l/control.rst
+++ b/Documentation/userspace-api/media/v4l/control.rst
@@ -242,8 +242,17 @@ Control IDs
     * - ``V4L2_COLORFX_SET_CBCR``
       - The Cb and Cr chroma components are replaced by fixed coefficients
 	determined by ``V4L2_CID_COLORFX_CBCR`` control.
+    * - ``V4L2_COLORFX_SET_RGB``
+      - The RGB components are replaced by the fixed RGB components determined
+        by ``V4L2_CID_COLORFX_RGB`` control.
 
 
+``V4L2_CID_COLORFX_RGB`` ``(integer)``
+    Determines the Red, Green, and Blue coefficients for
+    ``V4L2_COLORFX_SET_RGB`` color effect.
+    Bits [7:0] of the supplied 32 bit value are interpreted as Blue component,
+    bits [15:8] as Green component, bits [23:16] as Red component, and
+    bits [31:24] must be zero.
 
 ``V4L2_CID_COLORFX_CBCR`` ``(integer)``
     Determines the Cb and Cr coefficients for ``V4L2_COLORFX_SET_CBCR``