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56ab8cdbc1
There is no way to control the standard of subdevices which are part of a media device. The ioctls which exists all target video devices explicitly and the idea is that the video device should talk to the subdevice. For subdevices part of a media graph this is not possible and the standard must be controlled on the subdev device directly. Add four new ioctls to be able to directly interact with subdevices and control the video standard; VIDIOC_SUBDEV_ENUMSTD, VIDIOC_SUBDEV_G_STD, VIDIOC_SUBDEV_S_STD and VIDIOC_SUBDEV_QUERYSTD. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
186 lines
6.2 KiB
C
186 lines
6.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* V4L2 subdev userspace API
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*
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* Copyright (C) 2010 Nokia Corporation
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*
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* Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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* Sakari Ailus <sakari.ailus@iki.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __LINUX_V4L2_SUBDEV_H
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#define __LINUX_V4L2_SUBDEV_H
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#include <linux/v4l2-common.h>
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#include <linux/v4l2-mediabus.h>
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/**
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* enum v4l2_subdev_format_whence - Media bus format type
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* @V4L2_SUBDEV_FORMAT_TRY: try format, for negotiation only
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* @V4L2_SUBDEV_FORMAT_ACTIVE: active format, applied to the device
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*/
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enum v4l2_subdev_format_whence {
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V4L2_SUBDEV_FORMAT_TRY = 0,
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V4L2_SUBDEV_FORMAT_ACTIVE = 1,
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};
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/**
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* struct v4l2_subdev_format - Pad-level media bus format
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* @which: format type (from enum v4l2_subdev_format_whence)
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* @pad: pad number, as reported by the media API
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* @format: media bus format (format code and frame size)
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*/
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struct v4l2_subdev_format {
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__u32 which;
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__u32 pad;
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struct v4l2_mbus_framefmt format;
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__u32 reserved[8];
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};
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/**
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* struct v4l2_subdev_crop - Pad-level crop settings
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* @which: format type (from enum v4l2_subdev_format_whence)
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* @pad: pad number, as reported by the media API
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* @rect: pad crop rectangle boundaries
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*/
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struct v4l2_subdev_crop {
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__u32 which;
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__u32 pad;
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struct v4l2_rect rect;
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__u32 reserved[8];
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};
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/**
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* struct v4l2_subdev_mbus_code_enum - Media bus format enumeration
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* @pad: pad number, as reported by the media API
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* @index: format index during enumeration
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* @code: format code (MEDIA_BUS_FMT_ definitions)
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* @which: format type (from enum v4l2_subdev_format_whence)
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*/
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struct v4l2_subdev_mbus_code_enum {
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__u32 pad;
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__u32 index;
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__u32 code;
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__u32 which;
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__u32 reserved[8];
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};
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/**
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* struct v4l2_subdev_frame_size_enum - Media bus format enumeration
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* @pad: pad number, as reported by the media API
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* @index: format index during enumeration
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* @code: format code (MEDIA_BUS_FMT_ definitions)
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* @which: format type (from enum v4l2_subdev_format_whence)
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*/
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struct v4l2_subdev_frame_size_enum {
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__u32 index;
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__u32 pad;
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__u32 code;
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__u32 min_width;
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__u32 max_width;
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__u32 min_height;
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__u32 max_height;
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__u32 which;
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__u32 reserved[8];
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};
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/**
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* struct v4l2_subdev_frame_interval - Pad-level frame rate
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* @pad: pad number, as reported by the media API
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* @interval: frame interval in seconds
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*/
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struct v4l2_subdev_frame_interval {
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__u32 pad;
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struct v4l2_fract interval;
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__u32 reserved[9];
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};
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/**
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* struct v4l2_subdev_frame_interval_enum - Frame interval enumeration
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* @pad: pad number, as reported by the media API
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* @index: frame interval index during enumeration
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* @code: format code (MEDIA_BUS_FMT_ definitions)
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* @width: frame width in pixels
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* @height: frame height in pixels
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* @interval: frame interval in seconds
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* @which: format type (from enum v4l2_subdev_format_whence)
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*/
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struct v4l2_subdev_frame_interval_enum {
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__u32 index;
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__u32 pad;
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__u32 code;
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__u32 width;
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__u32 height;
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struct v4l2_fract interval;
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__u32 which;
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__u32 reserved[8];
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};
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/**
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* struct v4l2_subdev_selection - selection info
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*
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* @which: either V4L2_SUBDEV_FORMAT_ACTIVE or V4L2_SUBDEV_FORMAT_TRY
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* @pad: pad number, as reported by the media API
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* @target: Selection target, used to choose one of possible rectangles,
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* defined in v4l2-common.h; V4L2_SEL_TGT_* .
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* @flags: constraint flags, defined in v4l2-common.h; V4L2_SEL_FLAG_*.
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* @r: coordinates of the selection window
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* @reserved: for future use, set to zero for now
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*
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* Hardware may use multiple helper windows to process a video stream.
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* The structure is used to exchange this selection areas between
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* an application and a driver.
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*/
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struct v4l2_subdev_selection {
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__u32 which;
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__u32 pad;
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__u32 target;
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__u32 flags;
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struct v4l2_rect r;
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__u32 reserved[8];
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};
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/* Backwards compatibility define --- to be removed */
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#define v4l2_subdev_edid v4l2_edid
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#define VIDIOC_SUBDEV_G_FMT _IOWR('V', 4, struct v4l2_subdev_format)
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#define VIDIOC_SUBDEV_S_FMT _IOWR('V', 5, struct v4l2_subdev_format)
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#define VIDIOC_SUBDEV_G_FRAME_INTERVAL _IOWR('V', 21, struct v4l2_subdev_frame_interval)
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#define VIDIOC_SUBDEV_S_FRAME_INTERVAL _IOWR('V', 22, struct v4l2_subdev_frame_interval)
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#define VIDIOC_SUBDEV_ENUM_MBUS_CODE _IOWR('V', 2, struct v4l2_subdev_mbus_code_enum)
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#define VIDIOC_SUBDEV_ENUM_FRAME_SIZE _IOWR('V', 74, struct v4l2_subdev_frame_size_enum)
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#define VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL _IOWR('V', 75, struct v4l2_subdev_frame_interval_enum)
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#define VIDIOC_SUBDEV_G_CROP _IOWR('V', 59, struct v4l2_subdev_crop)
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#define VIDIOC_SUBDEV_S_CROP _IOWR('V', 60, struct v4l2_subdev_crop)
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#define VIDIOC_SUBDEV_G_SELECTION _IOWR('V', 61, struct v4l2_subdev_selection)
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#define VIDIOC_SUBDEV_S_SELECTION _IOWR('V', 62, struct v4l2_subdev_selection)
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/* The following ioctls are identical to the ioctls in videodev2.h */
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#define VIDIOC_SUBDEV_G_STD _IOR('V', 23, v4l2_std_id)
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#define VIDIOC_SUBDEV_S_STD _IOW('V', 24, v4l2_std_id)
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#define VIDIOC_SUBDEV_ENUMSTD _IOWR('V', 25, struct v4l2_standard)
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#define VIDIOC_SUBDEV_G_EDID _IOWR('V', 40, struct v4l2_edid)
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#define VIDIOC_SUBDEV_S_EDID _IOWR('V', 41, struct v4l2_edid)
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#define VIDIOC_SUBDEV_QUERYSTD _IOR('V', 63, v4l2_std_id)
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#define VIDIOC_SUBDEV_S_DV_TIMINGS _IOWR('V', 87, struct v4l2_dv_timings)
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#define VIDIOC_SUBDEV_G_DV_TIMINGS _IOWR('V', 88, struct v4l2_dv_timings)
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#define VIDIOC_SUBDEV_ENUM_DV_TIMINGS _IOWR('V', 98, struct v4l2_enum_dv_timings)
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#define VIDIOC_SUBDEV_QUERY_DV_TIMINGS _IOR('V', 99, struct v4l2_dv_timings)
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#define VIDIOC_SUBDEV_DV_TIMINGS_CAP _IOWR('V', 100, struct v4l2_dv_timings_cap)
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#endif
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