From 202bd8f62e30ae4da7b591b09f21e8bcd5913846 Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Thu, 25 Jun 2020 17:51:03 +0100 Subject: [PATCH] media: Add a pixel format for MIPI packed 14bit luma only. This is the format used by monochrome 14bit image sensors. Signed-off-by: Dave Stevenson --- .../userspace-api/media/v4l/pixfmt-y14p.rst | 54 +++++++++++++++++++ .../userspace-api/media/v4l/yuv-formats.rst | 1 + drivers/media/v4l2-core/v4l2-ioctl.c | 1 + include/uapi/linux/videodev2.h | 1 + 4 files changed, 57 insertions(+) create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y14p.rst --- /dev/null +++ b/Documentation/userspace-api/media/v4l/pixfmt-y14p.rst @@ -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) --- a/Documentation/userspace-api/media/v4l/yuv-formats.rst +++ b/Documentation/userspace-api/media/v4l/yuv-formats.rst @@ -268,6 +268,7 @@ image. pixfmt-yuv-planar pixfmt-yuv-luma pixfmt-y12p + pixfmt-y14p pixfmt-y8i pixfmt-y12i pixfmt-uv8 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1315,6 +1315,7 @@ static void v4l_fill_fmtdesc(struct v4l2 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; --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -596,6 +596,7 @@ 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 */