Hi Tomasz, On Thu, 2020-05-21 at 18:38 +0000, Tomasz Figa wrote: > Hi Jerry, > > On Wed, May 13, 2020 at 11:45:37PM +0200, Tomasz Figa wrote: > > Hi Jerry, > > > > On Fri, May 8, 2020 at 4:03 AM Jerry-ch Chen <Jerry-ch.Chen@xxxxxxxxxxxx> wrote: > > > > > > Hi Laurent, Tomasz, Matthias, > > > > > > gentle ping for this patch set, > > > If no new comments, I would like to send a newer version. > > > > > > > Sorry, I still haven't had a chance to look at the series, so feel > > free to send a new version and I will take a look at the new one. > > > > Finally found some time to review the series. Again sorry for the delay > and thanks for your patience. > > Some general comments: > 1) The metadata format FourCC should be added in a separate patch, > together with documentation for it. > 2) Control IDs, structs used by the userspace, etc. should be defined in > a header under include/uapi/linux. > > Please also check my replies to particular patches for further comments. > > Best regards, > Tomasz Appreciate for your reply, So far, I've locally created an uapi header: include/uapi/linux/mtk_fd_40.h which provides some values, control ids, and the definitions of structures that would be needed by user of mtk_fd_40 driver. In addition, I also provide a MACRO as example in comments that can extract the struct member with bit length and offset definitions(eliminate the bit-fields). Also, I would like to rename struct fd_user_output with struct mtk_fd_hw_result. I worry fd_user_output would be a confusing name. I will add them in a separate patch in next version. I am still working on the documentation, which might be Documentation/media/uapi/v4l/pixfmt-meta-mtk-fd-40.rst. Refering the other pixfmt-*.rst files, I will try to provide the flat-table of the metadata with the structure of the mtk_fd_hw_result. I am confusing that should I remain the name with -40 in the tail of rst file? Since I think the layout of metadata might be different in the future mtk fd drivers. Maybe they create a new one or should they update the rst file when they are upstreaming? Other comments are almost fixed, I will inform you by this mail thread as soon as I finish the documentation of fd metadata format. Sorry for the late response, Thanks and Best Regards, Jerry