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media: v4l2: Add Renesas Camera Receiver Unit pixel formats

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The Renesas Camera Receiver Unit in the RZ/V2H SoC can output RAW
data captured from an image sensor without conversion to an RGB/YUV
format. In that case the data are packed into 64-bit blocks, with a
variable amount of padding in the most significant bits depending on
the bitdepth of the data. Add new V4L2 pixel format codes for the new
formats, along with documentation to describe them.

Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally+renesas@ideasonboard.com>
Link: https://lore.kernel.org/r/20250630222734.2712390-1-dan.scally@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
This commit is contained in:
Daniel Scally
2025-07-03 09:04:14 +02:00
committed by Hans Verkuil
parent f57e365573
commit 78584431e2
5 changed files with 160 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Documentation/userspace-api/media/v4l/pixfmt-bayer.rst
+1
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@@ -19,6 +19,7 @@ orders. See also `the Wikipedia article on Bayer filter
.. toctree::
:maxdepth: 1
pixfmt-rawnn-cru
pixfmt-srggb8
pixfmt-srggb8-pisp-comp
pixfmt-srggb10
Documentation/userspace-api/media/v4l/pixfmt-rawnn-cru.rst
+143
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@@ -0,0 +1,143 @@
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. _v4l2-pix-fmt-raw-cru10:
.. _v4l2-pix-fmt-raw-cru12:
.. _v4l2-pix-fmt-raw-cru14:
.. _v4l2-pix-fmt-raw-cru20:
**********************************************************************************************************************************
V4L2_PIX_FMT_RAW_CRU10 ('CR10'), V4L2_PIX_FMT_RAW_CRU12 ('CR12'), V4L2_PIX_FMT_RAW_CRU14 ('CR14'), V4L2_PIX_FMT_RAW_CRU20 ('CR20')
**********************************************************************************************************************************
===============================================================
Renesas RZ/V2H Camera Receiver Unit 64-bit packed pixel formats
===============================================================
| V4L2_PIX_FMT_RAW_CRU10 (CR10)
| V4L2_PIX_FMT_RAW_CRU12 (CR12)
| V4L2_PIX_FMT_RAW_CRU14 (CR14)
| V4L2_PIX_FMT_RAW_CRU20 (CR20)
Description
===========
These pixel formats are some of the RAW outputs for the Camera Receiver Unit in
the Renesas RZ/V2H SoC. They are raw formats which pack pixels contiguously into
64-bit units, with the 4 or 8 most significant bits padded.
**Byte Order**
.. flat-table:: RAW formats
:header-rows: 2
:stub-columns: 0
:widths: 36 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
:fill-cells:
* - :rspan:`1` Pixel Format Code
- :cspan:`63` Data organization
* - 63
- 62
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- 11
- 10
- 9
- 8
- 7
- 6
- 5
- 4
- 3
- 2
- 1
- 0
* - V4L2_PIX_FMT_RAW_CRU10
- 0
- 0
- 0
- 0
- :cspan:`9` P5
- :cspan:`9` P4
- :cspan:`9` P3
- :cspan:`9` P2
- :cspan:`9` P1
- :cspan:`9` P0
* - V4L2_PIX_FMT_RAW_CRU12
- 0
- 0
- 0
- 0
- :cspan:`11` P4
- :cspan:`11` P3
- :cspan:`11` P2
- :cspan:`11` P1
- :cspan:`11` P0
* - V4L2_PIX_FMT_RAW_CRU14
- 0
- 0
- 0
- 0
- 0
- 0
- 0
- 0
- :cspan:`13` P3
- :cspan:`13` P2
- :cspan:`13` P1
- :cspan:`13` P0
* - V4L2_PIX_FMT_RAW_CRU20
- 0
- 0
- 0
- 0
- :cspan:`19` P2
- :cspan:`19` P1
- :cspan:`19` P0
drivers/media/v4l2-core/v4l2-common.c
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@@ -344,6 +344,12 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
{ .format = V4L2_PIX_FMT_SGBRG12, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SGRBG12, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_SRGGB12, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
/* Renesas Camera Data Receiver Unit formats, bayer order agnostic */
{ .format = V4L2_PIX_FMT_RAW_CRU10, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 8, 0, 0, 0 }, .bpp_div = { 6, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_RAW_CRU12, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 8, 0, 0, 0 }, .bpp_div = { 5, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_RAW_CRU14, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 8, 0, 0, 0 }, .bpp_div = { 4, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_RAW_CRU20, .pixel_enc = V4L2_PIXEL_ENC_BAYER, .mem_planes = 1, .comp_planes = 1, .bpp = { 8, 0, 0, 0 }, .bpp_div = { 3, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
};
unsigned int i;
drivers/media/v4l2-core/v4l2-ioctl.c
+4
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@@ -1413,6 +1413,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
case V4L2_PIX_FMT_RAW_CRU10: descr = "10-bit Raw CRU Packed"; break;
case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
@@ -1421,6 +1422,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
case V4L2_PIX_FMT_RAW_CRU12: descr = "12-bit Raw CRU Packed"; break;
case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break;
case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break;
case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break;
@@ -1429,10 +1431,12 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break;
case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break;
case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break;
case V4L2_PIX_FMT_RAW_CRU14: descr = "14-bit Raw CRU Packed"; break;
case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;
case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;
case V4L2_PIX_FMT_RAW_CRU20: descr = "14-bit Raw CRU Packed"; break;
case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
include/uapi/linux/videodev2.h
+6
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@@ -840,6 +840,12 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_PISP_COMP2_BGGR v4l2_fourcc('P', 'C', '2', 'B') /* PiSP 8-bit mode 2 compressed BGGR bayer */
#define V4L2_PIX_FMT_PISP_COMP2_MONO v4l2_fourcc('P', 'C', '2', 'M') /* PiSP 8-bit mode 2 compressed monochrome */
/* Renesas RZ/V2H CRU packed formats. 64-bit units with contiguous pixels */
#define V4L2_PIX_FMT_RAW_CRU10 v4l2_fourcc('C', 'R', '1', '0')
#define V4L2_PIX_FMT_RAW_CRU12 v4l2_fourcc('C', 'R', '1', '2')
#define V4L2_PIX_FMT_RAW_CRU14 v4l2_fourcc('C', 'R', '1', '4')
#define V4L2_PIX_FMT_RAW_CRU20 v4l2_fourcc('C', 'R', '2', '0')
/* SDR formats - used only for Software Defined Radio devices */
#define V4L2_SDR_FMT_CU8 v4l2_fourcc('C', 'U', '0', '8') /* IQ u8 */
#define V4L2_SDR_FMT_CU16LE v4l2_fourcc('C', 'U', '1', '6') /* IQ u16le */