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media: uapi: v4l: Don't expose generic metadata formats to userspace

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The generic metadata pixel formats (V4L2_META_FMT_GENERIC_*) are meant
to be used in conjunction with device-specific media bus codes. Those
codes are work in progress and not available in the upstream kernel yet.
To make sure the generic metadata pixel formats won't be used by
userspace until we have the full infrastructure in place, keep their
definition private to the kernel for now.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Laurent Pinchart 2024-04-26 18:33:19 +03:00 committed by Hans Verkuil
parent d06fc8b6c3
commit d69c8429ea
1 changed files with 2 additions and 0 deletions
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2
include/uapi/linux/videodev2.h
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@ -841,6 +841,7 @@ struct v4l2_pix_format {
#define V4L2_META_FMT_RK_ISP1_PARAMS v4l2_fourcc('R', 'K', '1', 'P') /* Rockchip ISP1 3A Parameters */
#define V4L2_META_FMT_RK_ISP1_STAT_3A v4l2_fourcc('R', 'K', '1', 'S') /* Rockchip ISP1 3A Statistics */
#ifdef __KERNEL__
/*
* Line-based metadata formats. Remember to update v4l_fill_fmtdesc() when
* adding new ones!
@ -852,6 +853,7 @@ struct v4l2_pix_format {
#define V4L2_META_FMT_GENERIC_CSI2_16 v4l2_fourcc('M', 'C', '1', 'G') /* 16-bit CSI-2 packed 8-bit metadata */
#define V4L2_META_FMT_GENERIC_CSI2_20 v4l2_fourcc('M', 'C', '1', 'K') /* 20-bit CSI-2 packed 8-bit metadata */
#define V4L2_META_FMT_GENERIC_CSI2_24 v4l2_fourcc('M', 'C', '1', 'O') /* 24-bit CSI-2 packed 8-bit metadata */
#endif
/* priv field value to indicates that subsequent fields are valid. */
#define V4L2_PIX_FMT_PRIV_MAGIC 0xfeedcafe