[PATCH v5 02/11] media: v4l: Add V4L2-PIX-FMT-Y14P format

Jean-Michel Hautbois
2022-02-08T15:50:59Z

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.

As the other formats only needed 5 bytes before, append two bytes in the
documentation array.

Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
.../media/v4l/pixfmt-yuv-luma.rst | 33 +++++++++++++++++++
drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
include/uapi/linux/videodev2.h | 1 +
3 files changed, 35 insertions(+)

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst
index d37ce6027095..c64485b03d27 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst
@@ -36,6 +36,8 @@ are often referred to as greyscale formats.
- Byte 2
- Byte 3
- Byte 4
+ - Byte 5
+ - Byte 6

* .. _V4L2-PIX-FMT-GREY:

@@ -47,6 +49,8 @@ are often referred to as greyscale formats.
- ...
- ...
- ...
+ - ...
+ - ...

* .. _V4L2-PIX-FMT-Y10:

@@ -58,6 +62,8 @@ are often referred to as greyscale formats.
- ...
- ...
- ...
+ - ...
+ - ...

* .. _V4L2-PIX-FMT-Y10BPACK:

@@ -69,6 +75,8 @@ are often referred to as greyscale formats.
- 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:

@@ -80,6 +88,8 @@ are often referred to as greyscale formats.
- 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:

@@ -91,6 +101,8 @@ are often referred to as greyscale formats.
- ...
- ...
- ...
+ - ...
+ - ...

* .. _V4L2-PIX-FMT-Y12P:

@@ -102,6 +114,8 @@ are often referred to as greyscale formats.
- Y'\ :sub:`1`\ [3:0] Y'\ :sub:`0`\ [3:0]
- ...
- ...
+ - ...
+ - ...

* .. _V4L2-PIX-FMT-Y14:

@@ -113,6 +127,21 @@ are often referred to as greyscale formats.
- ...
- ...
- ...
+ - ...
+ - ...
+
+ * .. _V4L2-PIX-FMT-Y14P:
+
+ - ``V4L2_PIX_FMT_Y14P``
+ - 'Y14P'
+
+ - Y'\ :sub:`0`\ [13:6]
+ - Y'\ :sub:`1`\ [13:6]
+ - Y'\ :sub:`2`\ [13:6]
+ - Y'\ :sub:`3`\ [13:6]
+ - Y'\ :sub:`1`\ [1:0] Y'\ :sub:`0`\ [5:0]
+ - Y'\ :sub:`2`\ [3:0] Y'\ :sub:`1`\ [5:2]
+ - Y'\ :sub:`3`\ [5:0] Y'\ :sub:`2`\ [5:4]

* .. _V4L2-PIX-FMT-Y16:

@@ -124,6 +153,8 @@ are often referred to as greyscale formats.
- ...
- ...
- ...
+ - ...
+ - ...

* .. _V4L2-PIX-FMT-Y16-BE:

@@ -135,6 +166,8 @@ are often referred to as greyscale formats.
- ...
- ...
- ...
+ - ...
+ - ...

.. raw:: latex

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 12862e0803bf..c321cbd9de54 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1267,6 +1267,7 @@ 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_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index bef488205fea..18611289217f 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -570,6 +570,7 @@ 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 RAW14 packed */

/* Palette formats */
#define V4L2_PIX_FMT_PAL8 v4l2_fourcc('P', 'A', 'L', '8') /* 8 8-bit palette */
--
2.32.0