[RFC PATCH v2 1/7] media: v4l: Add V4L2-PIX-FMT-Y12P format

This is a packed grey-scale image format with a depth of 12 bits per
pixel. Two consecutive pixels are packed into 3 bytes. The first 2 bytes
contain the 8 high order bits of the pixels, and the 3rd byte contains
the 4 least significants bits of each pixel, in the same order.

Add the entry in userspace API, and document it.

Signed-off-by: Jean-Michel Hautbois <redacted>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 .../userspace-api/media/v4l/pixfmt-yuv-luma.rst       | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst
index 8ebd58c3588f..d37ce6027095 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst

@@ -92,6 +92,17 @@ are often referred to as greyscale formats.
       - ...
       - ...
 
+    * .. _V4L2-PIX-FMT-Y12P:
+
+      - ``V4L2_PIX_FMT_Y12P``
+      - 'Y12P'
+
+      - Y'\ :sub:`0`\ [11:4]
+      - Y'\ :sub:`1`\ [11:4]
+      - Y'\ :sub:`1`\ [3:0] Y'\ :sub:`0`\ [3:0]
+      - ...
+      - ...
+
     * .. _V4L2-PIX-FMT-Y14:
 
       - ``V4L2_PIX_FMT_Y14``

-- 
2.32.0


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