Hello, This patch series adds a set of new pixel formats needed for the Xilinx Video Frame Buffer Read/Write IP cores (see [1]). I've focussed on the RGB and packed YUV formats so far, the planar YUV formats will follow. Documentation of the pixel formats has grown organically in V4L2, and while it is fairly complete and detailed, it also duplicates lots of information. I've thus decided to bite the bullet, and try to consolidate the documentation first before adding new formats. The first three patches address minor issues in videodev2.h, removing a comment that belongs to a commit message instead (01/16) and moving two misplaced formats to where they belong (02/16 and 03/16). The next three patches refactor documentation for the RGB formats. Patch 04/16 removes a confusing table (that likely made sense when it was added, but not anymore), 05/16 adds a section title for the deprecated RGB formats to increase clarity, and patch 06/16 documents the naming scheme followed by our RGB formats. There are two separate naming schemes, used by 8- and 16-bit formats on one side, and 24- and 32-bit formats on the other side. The former matches the naming conventions of DRM, while the latter doesn't, which has often led to confusion and errors. This can't be changed, but it's now clearly documented. Patches 07/16 then moves to the RGB formats, adding extra documentation about chroma subsampling. Patch 08/16 moves all the packed YUV formats to the file that carries that title, as documenting "Packed YUV formats" and UYVY/VYUY/YUYV/YVYU is confusing and can only be explained by historical reasons. These changes allow consolidating duplicated documentation that was copied in multiple files. Patch 09/16 makes the packed YUV table a bit less confusing by adding '-' characters to denote padding bits instead of leaving the corresponding cells blank. Patch 10/16 then consolidates the packed YUV 4:4:4 format documentation in a more compact way, increasing readability by avoiding too wide tables. Patch 11/16 explains the packed YUV format naming scheme, similarly to what has been done for RGB formats earlier in the series. Next come the luma-only formats. Patch 12/16 consolidate them in a single file, documenting them in a single table. Navigation of the documentation becomes simpler as a result. Finally, patch 13/16 to 16/16 add new pixel formats needed by the Xilinx v-frmbuf. Before addressing the planar YUV formats I would like to receive feedback on the documentation refactoring, as the semi-planar and planar formats would in my opinion benefit from a similar cleanup. [1] https://www.xilinx.com/support/documentation/ip_documentation/v_frmbuf/v2_1/pg278-v-frmbuf.pdf Laurent Pinchart (16): media: videodev2.h: Remove unneeded comment about 4CC value media: videodev2.h: Move HI240 format to vendor-specific section media: videodev2.h: Move HM12 format to YUV semi-planar section media: doc: pixfmt-rgb: Remove layout table for packed RGB formats media: doc: pixfmt-rgb: Add title for deprecated formats media: doc: pixfmt-rgb: Clarify naming scheme for RGB formats media: doc: pixfmt-yuv: Document subsampling in more details media: doc: pixfmt-yuv: Move all packed YUV formats to common file media: doc: pixfmt-packed-yuv: Fill padding bits with '-' media: doc: pixfmt-packed-yuv: Express 4:4:4 formats in a more compact way media: doc: pixfmt-packed-yuv: Clarify naming scheme for 4:4:4 formats media: doc: pixfmt-yuv: Move all luma-only YUV formats to common file media: v4l2: Add 10-, 12- and 16-bpc BGR formats media: v4l2: Add a few missing packed YUV 4:4:4 formats media: v4l2: Add 10-, 12- and 16-bpc 4:4:4 packed VUY formats media: v4l2: Add 10- and 12-bpc luma-only formats with linear packing .../userspace-api/media/v4l/pixfmt-grey.rst | 51 -- .../userspace-api/media/v4l/pixfmt-m420.rst | 59 +- .../userspace-api/media/v4l/pixfmt-nv12.rst | 57 +- .../userspace-api/media/v4l/pixfmt-nv12m.rst | 60 +-- .../userspace-api/media/v4l/pixfmt-nv16.rst | 73 +-- .../userspace-api/media/v4l/pixfmt-nv16m.rst | 73 +-- .../media/v4l/pixfmt-packed-yuv.rst | 504 ++++++++++-------- .../userspace-api/media/v4l/pixfmt-rgb.rst | 315 +++++++---- .../userspace-api/media/v4l/pixfmt-uyvy.rst | 117 ---- .../userspace-api/media/v4l/pixfmt-vyuy.rst | 115 ---- .../userspace-api/media/v4l/pixfmt-y10.rst | 72 --- .../userspace-api/media/v4l/pixfmt-y10b.rst | 40 -- .../userspace-api/media/v4l/pixfmt-y10p.rst | 50 -- .../userspace-api/media/v4l/pixfmt-y12.rst | 72 --- .../userspace-api/media/v4l/pixfmt-y14.rst | 72 --- .../userspace-api/media/v4l/pixfmt-y16-be.rst | 76 --- .../userspace-api/media/v4l/pixfmt-y16.rst | 76 --- .../userspace-api/media/v4l/pixfmt-y41p.rst | 158 ------ .../media/v4l/pixfmt-yuv-luma.rst | 156 ++++++ .../userspace-api/media/v4l/pixfmt-yuv410.rst | 59 +- .../media/v4l/pixfmt-yuv411p.rst | 39 +- .../userspace-api/media/v4l/pixfmt-yuv420.rst | 66 +-- .../media/v4l/pixfmt-yuv420m.rst | 66 +-- .../media/v4l/pixfmt-yuv422m.rst | 44 +- .../media/v4l/pixfmt-yuv422p.rst | 44 +- .../media/v4l/pixfmt-yuv444m.rst | 33 +- .../userspace-api/media/v4l/pixfmt-yuyv.rst | 125 ----- .../userspace-api/media/v4l/pixfmt-yvyu.rst | 115 ---- .../userspace-api/media/v4l/yuv-formats.rst | 264 ++++++++- include/uapi/linux/videodev2.h | 27 +- 30 files changed, 927 insertions(+), 2151 deletions(-) delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-grey.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y10.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y10b.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y10p.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y12.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y14.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y16-be.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y16.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y41p.rst create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst delete mode 100644 Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst -- Regards, Laurent Pinchart
