media: doc: pixfmt-yuv: Move all luma-only YUV formats to common file

Luma-only pixel formats are documented in separate files. This
duplicates information, as those formats share comon traits. Consolidate
them in a single file and describe them in a single table.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/userspace-api/media/v4l/pixfmt-grey.rst

-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-GREY:
-
-**************************
-V4L2_PIX_FMT_GREY ('GREY')
-**************************
-
-Grey-scale image
-
-
-Description
-===========
-
-This is a grey-scale image. It is really a degenerate Y'CbCr format
-which simply contains no Cb or Cr data.
-
-**Byte Order.**
-Each cell is one byte.
-
-.. flat-table::
-    :header-rows:  0
-    :stub-columns: 0
-
-    * - start + 0:
-      - Y'\ :sub:`00`
-      - Y'\ :sub:`01`
-      - Y'\ :sub:`02`
-      - Y'\ :sub:`03`
-    * - start + 4:
-      - Y'\ :sub:`10`
-      - Y'\ :sub:`11`
-      - Y'\ :sub:`12`
-      - Y'\ :sub:`13`
-    * - start + 8:
-      - Y'\ :sub:`20`
-      - Y'\ :sub:`21`
-      - Y'\ :sub:`22`
-      - Y'\ :sub:`23`
-    * - start + 12:
-      - Y'\ :sub:`30`
-      - Y'\ :sub:`31`
-      - Y'\ :sub:`32`
-      - Y'\ :sub:`33`

Documentation/userspace-api/media/v4l/pixfmt-y10.rst

-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-Y10:
-
-*************************
-V4L2_PIX_FMT_Y10 ('Y10 ')
-*************************
-
-
-Grey-scale image
-
-
-Description
-===========
-
-This is a grey-scale image with a depth of 10 bits per pixel. Pixels are
-stored in 16-bit words with unused high bits padded with 0. The least
-significant byte is stored at lower memory addresses (little-endian).
-
-**Byte Order.**
-Each cell is one byte.
-
-
-
-
-.. flat-table::
-    :header-rows:  0
-    :stub-columns: 0
-
-    * - start + 0:
-      - Y'\ :sub:`00low`
-      - Y'\ :sub:`00high`
-      - Y'\ :sub:`01low`
-      - Y'\ :sub:`01high`
-      - Y'\ :sub:`02low`
-      - Y'\ :sub:`02high`
-      - Y'\ :sub:`03low`
-      - Y'\ :sub:`03high`
-    * - start + 8:
-      - Y'\ :sub:`10low`
-      - Y'\ :sub:`10high`
-      - Y'\ :sub:`11low`
-      - Y'\ :sub:`11high`
-      - Y'\ :sub:`12low`
-      - Y'\ :sub:`12high`
-      - Y'\ :sub:`13low`
-      - Y'\ :sub:`13high`
-    * - start + 16:
-      - Y'\ :sub:`20low`
-      - Y'\ :sub:`20high`
-      - Y'\ :sub:`21low`
-      - Y'\ :sub:`21high`
-      - Y'\ :sub:`22low`
-      - Y'\ :sub:`22high`
-      - Y'\ :sub:`23low`
-      - Y'\ :sub:`23high`
-    * - start + 24:
-      - Y'\ :sub:`30low`
-      - Y'\ :sub:`30high`
-      - Y'\ :sub:`31low`
-      - Y'\ :sub:`31high`
-      - Y'\ :sub:`32low`
-      - Y'\ :sub:`32high`
-      - Y'\ :sub:`33low`
-      - Y'\ :sub:`33high`

Documentation/userspace-api/media/v4l/pixfmt-y10b.rst

-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-Y10BPACK:
-
-******************************
-V4L2_PIX_FMT_Y10BPACK ('Y10B')
-******************************
-
-Grey-scale image as a bit-packed array
-
-
-Description
-===========
-
-This is a packed grey-scale image format with a depth of 10 bits per
-pixel. Pixels are stored in a bit-packed array of 10bit bits per pixel,
-with no padding between them and with the most significant bits coming
-first from the left.
-
-**Bit-packed representation.**
-
-pixels cross the byte boundary and have a ratio of 5 bytes for each 4
-pixels.
-
-.. flat-table::
-    :header-rows:  0
-    :stub-columns: 0
-
-    * - Y'\ :sub:`00[9:2]`
-      - Y'\ :sub:`00[1:0]`\ Y'\ :sub:`01[9:4]`
-      - Y'\ :sub:`01[3:0]`\ Y'\ :sub:`02[9:6]`
-      - Y'\ :sub:`02[5:0]`\ Y'\ :sub:`03[9:8]`
-      - Y'\ :sub:`03[7:0]`

Documentation/userspace-api/media/v4l/pixfmt-y10p.rst

-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _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.**
-
-.. raw:: latex
-
-    \small
-
-.. tabularcolumns:: |p{1.2cm}||p{1.2cm}||p{1.2cm}||p{1.2cm}|p{3.2cm}|p{3.2cm}|
-
-.. 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)
-
-.. raw:: latex
-
-    \normalsize

Documentation/userspace-api/media/v4l/pixfmt-y12.rst

-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-Y12:
-
-*************************
-V4L2_PIX_FMT_Y12 ('Y12 ')
-*************************
-
-
-Grey-scale image
-
-
-Description
-===========
-
-This is a grey-scale image with a depth of 12 bits per pixel. Pixels are
-stored in 16-bit words with unused high bits padded with 0. The least
-significant byte is stored at lower memory addresses (little-endian).
-
-**Byte Order.**
-Each cell is one byte.
-
-
-
-
-.. flat-table::
-    :header-rows:  0
-    :stub-columns: 0
-
-    * - start + 0:
-      - Y'\ :sub:`00low`
-      - Y'\ :sub:`00high`
-      - Y'\ :sub:`01low`
-      - Y'\ :sub:`01high`
-      - Y'\ :sub:`02low`
-      - Y'\ :sub:`02high`
-      - Y'\ :sub:`03low`
-      - Y'\ :sub:`03high`
-    * - start + 8:
-      - Y'\ :sub:`10low`
-      - Y'\ :sub:`10high`
-      - Y'\ :sub:`11low`
-      - Y'\ :sub:`11high`
-      - Y'\ :sub:`12low`
-      - Y'\ :sub:`12high`
-      - Y'\ :sub:`13low`
-      - Y'\ :sub:`13high`
-    * - start + 16:
-      - Y'\ :sub:`20low`
-      - Y'\ :sub:`20high`
-      - Y'\ :sub:`21low`
-      - Y'\ :sub:`21high`
-      - Y'\ :sub:`22low`
-      - Y'\ :sub:`22high`
-      - Y'\ :sub:`23low`
-      - Y'\ :sub:`23high`
-    * - start + 24:
-      - Y'\ :sub:`30low`
-      - Y'\ :sub:`30high`
-      - Y'\ :sub:`31low`
-      - Y'\ :sub:`31high`
-      - Y'\ :sub:`32low`
-      - Y'\ :sub:`32high`
-      - Y'\ :sub:`33low`
-      - Y'\ :sub:`33high`

Documentation/userspace-api/media/v4l/pixfmt-y14.rst

-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-Y14:
-
-*************************
-V4L2_PIX_FMT_Y14 ('Y14 ')
-*************************
-
-
-Grey-scale image
-
-
-Description
-===========
-
-This is a grey-scale image with a depth of 14 bits per pixel. Pixels are
-stored in 16-bit words with unused high bits padded with 0. The least
-significant byte is stored at lower memory addresses (little-endian).
-
-**Byte Order.**
-Each cell is one byte.
-
-
-
-
-.. flat-table::
-    :header-rows:  0
-    :stub-columns: 0
-
-    * - start + 0:
-      - Y'\ :sub:`00low`
-      - Y'\ :sub:`00high`
-      - Y'\ :sub:`01low`
-      - Y'\ :sub:`01high`
-      - Y'\ :sub:`02low`
-      - Y'\ :sub:`02high`
-      - Y'\ :sub:`03low`
-      - Y'\ :sub:`03high`
-    * - start + 8:
-      - Y'\ :sub:`10low`
-      - Y'\ :sub:`10high`
-      - Y'\ :sub:`11low`
-      - Y'\ :sub:`11high`
-      - Y'\ :sub:`12low`
-      - Y'\ :sub:`12high`
-      - Y'\ :sub:`13low`
-      - Y'\ :sub:`13high`
-    * - start + 16:
-      - Y'\ :sub:`20low`
-      - Y'\ :sub:`20high`
-      - Y'\ :sub:`21low`
-      - Y'\ :sub:`21high`
-      - Y'\ :sub:`22low`
-      - Y'\ :sub:`22high`
-      - Y'\ :sub:`23low`
-      - Y'\ :sub:`23high`
-    * - start + 24:
-      - Y'\ :sub:`30low`
-      - Y'\ :sub:`30high`
-      - Y'\ :sub:`31low`
-      - Y'\ :sub:`31high`
-      - Y'\ :sub:`32low`
-      - Y'\ :sub:`32high`
-      - Y'\ :sub:`33low`
-      - Y'\ :sub:`33high`

Documentation/userspace-api/media/v4l/pixfmt-y16-be.rst

-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-Y16-BE:
-
-****************************************
-V4L2_PIX_FMT_Y16_BE ('Y16 ' | (1 << 31))
-****************************************
-
-
-Grey-scale image
-
-
-Description
-===========
-
-This is a grey-scale image with a depth of 16 bits per pixel. The most
-significant byte is stored at lower memory addresses (big-endian).
-
-.. note::
-
-   The actual sampling precision may be lower than 16 bits, for
-   example 10 bits per pixel with values in range 0 to 1023.
-
-**Byte Order.**
-Each cell is one byte.
-
-
-
-
-.. flat-table::
-    :header-rows:  0
-    :stub-columns: 0
-
-    * - start + 0:
-      - Y'\ :sub:`00high`
-      - Y'\ :sub:`00low`
-      - Y'\ :sub:`01high`
-      - Y'\ :sub:`01low`
-      - Y'\ :sub:`02high`
-      - Y'\ :sub:`02low`
-      - Y'\ :sub:`03high`
-      - Y'\ :sub:`03low`
-    * - start + 8:
-      - Y'\ :sub:`10high`
-      - Y'\ :sub:`10low`
-      - Y'\ :sub:`11high`
-      - Y'\ :sub:`11low`
-      - Y'\ :sub:`12high`
-      - Y'\ :sub:`12low`
-      - Y'\ :sub:`13high`
-      - Y'\ :sub:`13low`
-    * - start + 16:
-      - Y'\ :sub:`20high`
-      - Y'\ :sub:`20low`
-      - Y'\ :sub:`21high`
-      - Y'\ :sub:`21low`
-      - Y'\ :sub:`22high`
-      - Y'\ :sub:`22low`
-      - Y'\ :sub:`23high`
-      - Y'\ :sub:`23low`
-    * - start + 24:
-      - Y'\ :sub:`30high`
-      - Y'\ :sub:`30low`
-      - Y'\ :sub:`31high`
-      - Y'\ :sub:`31low`
-      - Y'\ :sub:`32high`
-      - Y'\ :sub:`32low`
-      - Y'\ :sub:`33high`
-      - Y'\ :sub:`33low`

Documentation/userspace-api/media/v4l/pixfmt-y16.rst

-.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
-
-.. _V4L2-PIX-FMT-Y16:
-
-*************************
-V4L2_PIX_FMT_Y16 ('Y16 ')
-*************************
-
-
-Grey-scale image
-
-
-Description
-===========
-
-This is a grey-scale image with a depth of 16 bits per pixel. The least
-significant byte is stored at lower memory addresses (little-endian).
-
-.. note::
-
-   The actual sampling precision may be lower than 16 bits, for
-   example 10 bits per pixel with values in range 0 to 1023.
-
-**Byte Order.**
-Each cell is one byte.
-
-
-
-
-.. flat-table::
-    :header-rows:  0
-    :stub-columns: 0
-
-    * - start + 0:
-      - Y'\ :sub:`00low`
-      - Y'\ :sub:`00high`
-      - Y'\ :sub:`01low`
-      - Y'\ :sub:`01high`
-      - Y'\ :sub:`02low`
-      - Y'\ :sub:`02high`
-      - Y'\ :sub:`03low`
-      - Y'\ :sub:`03high`
-    * - start + 8:
-      - Y'\ :sub:`10low`
-      - Y'\ :sub:`10high`
-      - Y'\ :sub:`11low`
-      - Y'\ :sub:`11high`
-      - Y'\ :sub:`12low`
-      - Y'\ :sub:`12high`
-      - Y'\ :sub:`13low`
-      - Y'\ :sub:`13high`
-    * - start + 16:
-      - Y'\ :sub:`20low`
-      - Y'\ :sub:`20high`
-      - Y'\ :sub:`21low`
-      - Y'\ :sub:`21high`
-      - Y'\ :sub:`22low`
-      - Y'\ :sub:`22high`
-      - Y'\ :sub:`23low`
-      - Y'\ :sub:`23high`
-    * - start + 24:
-      - Y'\ :sub:`30low`
-      - Y'\ :sub:`30high`
-      - Y'\ :sub:`31low`
-      - Y'\ :sub:`31high`
-      - Y'\ :sub:`32low`
-      - Y'\ :sub:`32high`
-      - Y'\ :sub:`33low`
-      - Y'\ :sub:`33high`

Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst

+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+
+.. _yuv-luma-only:
+
+*****************
+Luma-Only Formats
+*****************
+
+This family of formats only store the luma component of a Y'CbCr image. They
+are often referred to as greyscale formats.
+
+.. note::
+
+   - In all the tables that follow, bit 7 is the most significant bit in a byte.
+   - Formats are described with the minimum number of pixels needed to create a
+     byte-aligned repeating pattern. `...` indicates repetition of the pattern.
+   - Y'\ :sub:`x`\ [9:2] denotes bits 9 to 2 of the Y' value for pixel at colum
+     `x`.
+   - `0` denotes padding bits set to 0.
+
+
+.. flat-table:: Luma-Only Image Formats
+    :header-rows: 1
+    :stub-columns: 0
+
+    * - Identifier
+      - Code
+      - Byte 0
+      - Byte 1
+      - Byte 2
+      - Byte 3
+      - Byte 4
+
+    * .. _V4L2-PIX-FMT-GREY:
+
+      - ``V4L2_PIX_FMT_GREY``
+      - 'GREY'
+
+      - Y'\ :sub:`0`\ [7:0]
+      - ...
+      - ...
+      - ...
+      - ...
+
+    * .. _V4L2-PIX-FMT-Y10:
+
+      - ``V4L2_PIX_FMT_Y10``
+      - 'Y10 '
+
+      - Y'\ :sub:`0`\ [7:0]
+      - `000000` Y'\ :sub:`0`\ [9:8]
+      - ...
+      - ...
+      - ...
+
+    * .. _V4L2-PIX-FMT-Y10BPACK:
+
+      - ``V4L2_PIX_FMT_Y10BPACK``
+      - 'Y10B'
+
+      - Y'\ :sub:`0`\ [9:2]
+      - Y'\ :sub:`0`\ [1:0] Y'\ :sub:`1`\ [9:4]
+      - Y'\ :sub:`1`\ [3:0] Y'\ :sub:`2`\ [9:6]
+      - Y'\ :sub:`2`\ [5:0] Y'\ :sub:`3`\ [9:8]
+      - Y'\ :sub:`3`\ [7:0]
+
+    * .. _V4L2-PIX-FMT-Y10P:
+
+      - ``V4L2_PIX_FMT_Y10P``
+      - 'Y10P'
+
+      - Y'\ :sub:`0`\ [7:0]
+      - Y'\ :sub:`1`\ [9:8]
+      - Y'\ :sub:`2`\ [9:2]
+      - Y'\ :sub:`3`\ [9:2]
+      - Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [1:0] Y'\ :sub:`1`\ [1:0] Y'\ :sub:`0`\ [1:0]
+
+    * .. _V4L2-PIX-FMT-Y12:
+
+      - ``V4L2_PIX_FMT_Y12``
+      - 'Y12 '
+
+      - Y'\ :sub:`0`\ [7:0]
+      - `0000` Y'\ :sub:`0`\ [11:8]
+      - ...
+      - ...
+      - ...
+
+    * .. _V4L2-PIX-FMT-Y14:
+
+      - ``V4L2_PIX_FMT_Y14``
+      - 'Y14 '
+
+      - Y'\ :sub:`0`\ [7:0]
+      - `00` Y'\ :sub:`0`\ [13:8]
+      - ...
+      - ...
+      - ...
+
+    * .. _V4L2-PIX-FMT-Y16:
+
+      - ``V4L2_PIX_FMT_Y16``
+      - 'Y16 '
+
+      - Y'\ :sub:`0`\ [7:0]
+      - Y'\ :sub:`0`\ [15:8]
+      - ...
+      - ...
+      - ...
+
+    * .. _V4L2-PIX-FMT-Y16-BE:
+
+      - ``V4L2_PIX_FMT_Y16_BE``
+      - 'Y16 ' | (1U << 31)
+
+      - Y'\ :sub:`0`\ [15:8]
+      - Y'\ :sub:`0`\ [7:0]
+      - ...
+      - ...
+      - ...
+
+.. note::
+
+    For the Y16 and Y16_BE formats, the actual sampling precision may be lower
+    than 16 bits. For example, 10 bits per pixel uses values in the range 0 to
+    1023.

Documentation/userspace-api/media/v4l/yuv-formats.rst

@@ -265,14 +265,7 @@ image.
     :maxdepth: 1
 
     pixfmt-packed-yuv
-    pixfmt-grey
-    pixfmt-y10
-    pixfmt-y12
-    pixfmt-y14
-    pixfmt-y10b
-    pixfmt-y10p
-    pixfmt-y16
-    pixfmt-y16-be
+    pixfmt-yuv-luma
     pixfmt-y8i
     pixfmt-y12i
     pixfmt-uv8