This patch is a v3 of the patchset "media: staging: rkisp1: various fixes to capture formats" https://patchwork.kernel.org/cover/11551791/ The patchset solves several problems in the rkisp1 driver: 1. Currently the resizers always return media code MEDIA_BUS_FMT_YUYV8_2X8. The patchset adds support to other media codes on the resizer according to the chroma subsampling. Setting the correct media code on the source pad that matches the chroma subsampling reflects userspace that the resizer has downsampling ability and also the resizer entity does not have to check the capture entity's configuration to get the scaling ratio, the information of how to scale can be obtained from the source media code of the resizer. 2. Add support for the V4L2_CAP_IO_MC capability on the mainpath and selfpath captures. This helps userspace to know the right configuration for streaming. This is especially helpful for the RGB and Grey formats that expect media bus MEDIA_BUS_FMT_YUYV8_2X8 which is not something userspace can guess. Adding a mapping of the expected mbus code for each pixelformat also makes the link_validation code much simpler, it just has to check if the configuration matches the mapping. 3. Removes unsupported packed yuv formats - this patch was already part of a pull request and was dropped due to merge conflicts. 4. Remove bayer formats on the selfpath resizer since they are not supported on the selfpath capture. 5. Remove support to YUV444 pixel format, I was not able to find a configuration that supports this format. I kept getting bad looking frames and this format is not that important to support. Also the TRM says: " In sensor mode the MRSZ block supports only down-scaling. This is because the sensor cannot be stopped from delivering data during one frame. " So it seems that the format cannot be supported. 6. Fix the configuration to support Grey format - the 'write_format' field should be 'planar' Dafna Hirschfeld (10): media: staging: rkisp1: cap: change RGB24 format to XBGR32 media: staging: rkisp1: cap: remove unsupported formats media: staging: rkisp1: cap: remove unsupported format YUV444 media: staging: rkisp1: don't support bayer format on selfpath resizer media: staging: rkisp1: add capability V4L2_CAP_IO_MC to capture devices media: staging: rkisp1: add a helper function to enumerate supported mbus formats on capture media: staging: rkisp1: rsz: enumerate the formats on the src pad according to the capture media: staging: rkisp1: rsz: Add support to more YUV encoded mbus codes on src pad media: rkisp1: cap: simplify the link validation by comparing the media bus code media: staging: rkisp1: fix configuration for GREY pixelformat drivers/staging/media/rkisp1/rkisp1-capture.c | 185 ++++++++++-------- drivers/staging/media/rkisp1/rkisp1-common.h | 8 + drivers/staging/media/rkisp1/rkisp1-resizer.c | 108 +++++++--- 3 files changed, 195 insertions(+), 106 deletions(-) -- 2.17.1
