media: v4l: Add new 10-bit packed grayscale format

The new format will be called V4L2_PIX_FMT_Y10P.
It is similar to the V4L2_PIX_FMT_SBGGR10P family formats
but V4L2_PIX_FMT_Y10P is a grayscale format.

Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

Documentation/media/uapi/v4l/pixfmt-y10p.rst

@@ -0,0 +1,33 @@
+.. -*- coding: utf-8; mode: rst -*-
+
+.. _V4L2-PIX-FMT-Y10P:
+
+******************************
+V4L2_PIX_FMT_Y10P ('Y10P')
+******************************
+
+Grey-scale image as a MIPI RAW10 packed array
+
+
+Description
+===========
+
+This is a packed grey-scale image format with a depth of 10 bits per
+pixel. Every four consecutive pixels are packed into 5 bytes. Each of
+the first 4 bytes contain the 8 high order bits of the pixels, and
+the 5th byte contains the 2 least significants bits of each pixel,
+in the same order.
+
+**Bit-packed representation.**
+
+.. flat-table::
+    :header-rows:  0
+    :stub-columns: 0
+    :widths: 8 8 8 8 64
+
+    * - Y'\ :sub:`00[9:2]`
+      - Y'\ :sub:`01[9:2]`
+      - Y'\ :sub:`02[9:2]`
+      - Y'\ :sub:`03[9:2]`
+      - Y'\ :sub:`03[1:0]`\ (bits 7--6) Y'\ :sub:`02[1:0]`\ (bits 5--4)
+	Y'\ :sub:`01[1:0]`\ (bits 3--2) Y'\ :sub:`00[1:0]`\ (bits 1--0)

Documentation/media/uapi/v4l/yuv-formats.rst

@@ -29,6 +29,7 @@ to brightness information.
     pixfmt-y10
     pixfmt-y12
     pixfmt-y10b
+    pixfmt-y10p
     pixfmt-y16
     pixfmt-y16-be
     pixfmt-y8i