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media: Add a pixel format for MIPI packed 14bit luma only.

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This is the format used by monochrome 14bit image sensors.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This commit is contained in:
Dave Stevenson
2020-06-25 17:51:03 +01:00
committed by Dom Cobley
parent c1ddc74e38
commit 74bcff8ccf
4 changed files with 57 additions and 0 deletions
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54
Documentation/userspace-api/media/v4l/pixfmt-y14p.rst Normal file
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@@ -0,0 +1,54 @@
.. Permission is granted to copy, distribute and/or modify this
.. document under the terms of the GNU Free Documentation License,
.. Version 1.1 or any later version published by the Free Software
.. Foundation, with no Invariant Sections, no Front-Cover Texts
.. and no Back-Cover Texts. A copy of the license is included at
.. Documentation/media/uapi/fdl-appendix.rst.
..
.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
.. _V4L2-PIX-FMT-Y14P:
**************************
V4L2_PIX_FMT_Y14P ('Y14P')
**************************
Grey-scale image as a MIPI RAW14 packed array
Description
===========
This is a packed grey-scale image format with a depth of 14 bits per
pixel. Every four consecutive samples are packed into seven bytes. Each
of the first four bytes contain the eight high order bits of the pixels,
and the three following bytes contains the six least significants bits of
each pixel, in the same order.
**Byte Order.**
Each cell is one byte.
.. tabularcolumns:: |p{1.8cm}|p{1.0cm}|p{1.0cm}|p{1.0cm}|p{1.1cm}|p{3.3cm}|p{3.3cm}|p{3.3cm}|
.. flat-table::
:header-rows: 0
:stub-columns: 0
:widths: 2 1 1 1 1 3 3 3
- - start + 0:
- Y'\ :sub:`00high`
- Y'\ :sub:`01high`
- Y'\ :sub:`02high`
- Y'\ :sub:`03high`
- Y'\ :sub:`01low bits 1--0`\ (bits 7--6)
Y'\ :sub:`00low bits 5--0`\ (bits 5--0)
- Y'\ :sub:`02low bits 3--0`\ (bits 7--4)
Y'\ :sub:`01low bits 5--2`\ (bits 3--0)
- Y'\ :sub:`03low bits 5--0`\ (bits 7--2)
Y'\ :sub:`02low bits 5--4`\ (bits 1--0)

1
Documentation/userspace-api/media/v4l/yuv-formats.rst
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@@ -268,6 +268,7 @@ image.
pixfmt-yuv-planar
pixfmt-yuv-luma
pixfmt-y12p
pixfmt-y14p
pixfmt-y8i
pixfmt-y12i
pixfmt-uv8

1
drivers/media/v4l2-core/v4l2-ioctl.c
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@@ -1270,6 +1270,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;
case V4L2_PIX_FMT_Y12P: descr = "12-bit Greyscale (MIPI Packed)"; break;
case V4L2_PIX_FMT_Y14P: descr = "14-bit Greyscale (MIPI Packed)"; break;
case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break;
case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;

1
include/uapi/linux/videodev2.h
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@@ -575,6 +575,7 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_Y10BPACK v4l2_fourcc('Y', '1', '0', 'B') /* 10 Greyscale bit-packed */
#define V4L2_PIX_FMT_Y10P v4l2_fourcc('Y', '1', '0', 'P') /* 10 Greyscale, MIPI RAW10 packed */
#define V4L2_PIX_FMT_Y12P v4l2_fourcc('Y', '1', '2', 'P') /* 12 Greyscale, MIPI RAW12 packed */
#define V4L2_PIX_FMT_Y14P v4l2_fourcc('Y', '1', '4', 'P') /* 14 Greyscale, MIPI RAW12 packed */
#define V4L2_PIX_FMT_IPU3_Y10 v4l2_fourcc('i', 'p', '3', 'y') /* IPU3 packed 10-bit greyscale */
/* Palette formats */