From: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
This is the format used by monochrome 12bit image sensors.
Signed-off-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
Signed-off-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
---
.../userspace-api/media/v4l/pixfmt-y12p.rst | 38 +++++++++++++++++++
.../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, 41 insertions(+)
create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y12p.rst
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y12p.rst b/Documentation/userspace-api/media/v4l/pixfmt-y12p.rst
new file mode 100644
index 000000000000..b2eb4a72724d
--- /dev/null
+++ b/Documentation/userspace-api/media/v4l/pixfmt-y12p.rst
@@ -0,0 +1,38 @@
+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+
+.. _V4L2-PIX-FMT-Y12P:
+
+******************************
+V4L2_PIX_FMT_Y12P ('Y12P')
+******************************
+
+Grey-scale image as a MIPI RAW12 packed array
+
+
+Description
+===========
+
+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.
+
+**Byte Order.**
+Each cell is one byte.
+
+.. tabularcolumns:: |p{2.2cm}|p{1.2cm}|p{1.2cm}|p{3.1cm}|
+
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+ :widths: 2 1 1 1
+
+
+ - - start + 0:
+ - Y'\ :sub:`00high`
+ - Y'\ :sub:`01high`
+ - Y'\ :sub:`01low`\ (bits 7--4)
+
+ Y'\ :sub:`00low`\ (bits 3--0)
+
diff --git a/Documentation/userspace-api/media/v4l/yuv-formats.rst b/Documentation/userspace-api/media/v4l/yuv-formats.rst
index 24b34cdfa6fe..7c9ccfdd94cd 100644
--- a/Documentation/userspace-api/media/v4l/yuv-formats.rst
+++ b/Documentation/userspace-api/media/v4l/yuv-formats.rst
@@ -267,6 +267,7 @@ image.
pixfmt-packed-yuv
pixfmt-yuv-planar
pixfmt-yuv-luma
+ pixfmt-y12p
pixfmt-y8i
pixfmt-y12i
pixfmt-uv8
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 33076af4dfdb..483498c55899 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1311,6 +1311,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
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_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;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index a8015e5e7fa4..11ebf9b22ccb 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -598,6 +598,7 @@ struct v4l2_pix_format {
/* Grey bit-packed formats */
#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_IPU3_Y10 v4l2_fourcc('i', 'p', '3', 'y') /* IPU3 packed 10-bit greyscale */
/* Palette formats */
--
2.43.0
