From 56ab8cdbc1438507d79085fcc7e511327d84aeb8 Mon Sep 17 00:00:00 2001 From: Niklas Söderlund Date: Thu, 17 May 2018 10:30:16 -0400 Subject: media: v4l: Add support for STD ioctls on subdev nodes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- Documentation/media/uapi/v4l/vidioc-enumstd.rst | 11 +++++++---- Documentation/media/uapi/v4l/vidioc-g-std.rst | 14 ++++++++++---- Documentation/media/uapi/v4l/vidioc-querystd.rst | 11 +++++++---- 3 files changed, 24 insertions(+), 12 deletions(-) (limited to 'Documentation/media') diff --git a/Documentation/media/uapi/v4l/vidioc-enumstd.rst b/Documentation/media/uapi/v4l/vidioc-enumstd.rst index b7fda29f46a1..2644a62acd4b 100644 --- a/Documentation/media/uapi/v4l/vidioc-enumstd.rst +++ b/Documentation/media/uapi/v4l/vidioc-enumstd.rst @@ -2,14 +2,14 @@ .. _VIDIOC_ENUMSTD: -******************** -ioctl VIDIOC_ENUMSTD -******************** +******************************************* +ioctl VIDIOC_ENUMSTD, VIDIOC_SUBDEV_ENUMSTD +******************************************* Name ==== -VIDIOC_ENUMSTD - Enumerate supported video standards +VIDIOC_ENUMSTD - VIDIOC_SUBDEV_ENUMSTD - Enumerate supported video standards Synopsis @@ -18,6 +18,9 @@ Synopsis .. c:function:: int ioctl( int fd, VIDIOC_ENUMSTD, struct v4l2_standard *argp ) :name: VIDIOC_ENUMSTD +.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUMSTD, struct v4l2_standard *argp ) + :name: VIDIOC_SUBDEV_ENUMSTD + Arguments ========= diff --git a/Documentation/media/uapi/v4l/vidioc-g-std.rst b/Documentation/media/uapi/v4l/vidioc-g-std.rst index 90791ab51a53..8d94f0404df2 100644 --- a/Documentation/media/uapi/v4l/vidioc-g-std.rst +++ b/Documentation/media/uapi/v4l/vidioc-g-std.rst @@ -2,14 +2,14 @@ .. _VIDIOC_G_STD: -******************************** -ioctl VIDIOC_G_STD, VIDIOC_S_STD -******************************** +************************************************************************** +ioctl VIDIOC_G_STD, VIDIOC_S_STD, VIDIOC_SUBDEV_G_STD, VIDIOC_SUBDEV_S_STD +************************************************************************** Name ==== -VIDIOC_G_STD - VIDIOC_S_STD - Query or select the video standard of the current input +VIDIOC_G_STD - VIDIOC_S_STD - VIDIOC_SUBDEV_G_STD - VIDIOC_SUBDEV_S_STD - Query or select the video standard of the current input Synopsis @@ -21,6 +21,12 @@ Synopsis .. c:function:: int ioctl( int fd, VIDIOC_S_STD, const v4l2_std_id *argp ) :name: VIDIOC_S_STD +.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_STD, v4l2_std_id *argp ) + :name: VIDIOC_SUBDEV_G_STD + +.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_STD, const v4l2_std_id *argp ) + :name: VIDIOC_SUBDEV_S_STD + Arguments ========= diff --git a/Documentation/media/uapi/v4l/vidioc-querystd.rst b/Documentation/media/uapi/v4l/vidioc-querystd.rst index cf40bca19b9f..a8385cc74818 100644 --- a/Documentation/media/uapi/v4l/vidioc-querystd.rst +++ b/Documentation/media/uapi/v4l/vidioc-querystd.rst @@ -2,14 +2,14 @@ .. _VIDIOC_QUERYSTD: -********************* -ioctl VIDIOC_QUERYSTD -********************* +********************************************* +ioctl VIDIOC_QUERYSTD, VIDIOC_SUBDEV_QUERYSTD +********************************************* Name ==== -VIDIOC_QUERYSTD - Sense the video standard received by the current input +VIDIOC_QUERYSTD - VIDIOC_SUBDEV_QUERYSTD - Sense the video standard received by the current input Synopsis @@ -18,6 +18,9 @@ Synopsis .. c:function:: int ioctl( int fd, VIDIOC_QUERYSTD, v4l2_std_id *argp ) :name: VIDIOC_QUERYSTD +.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_QUERYSTD, v4l2_std_id *argp ) + :name: VIDIOC_SUBDEV_QUERYSTD + Arguments ========= -- cgit v1.2.3