Sysfs Software Design Interfaces - Texas Instruments OMAP35 Series User Manual

VIDIOC_QBUF
This is used to queue a buffer by passing a v4l2_buffer struct associated to
that buffer.
VIDIOC_DQBUF
This is used to dequeue a buffer by passing a v4l2_buffer struct associated to
that buffer.
VIDIOC_STREAMON
This is used to turn on streaming. After that, any VIDIOC_QBUF results in an
image being rendered.
VIDIOC_S_CTRL VIDIOC_G_CTRL VIDIOC_QUERYCTRL
These ioctls are used to set/get and query various V4L2 controls like rotation,
mirror and background color. Currently only rotation is supported
VIDIOC_STREAMOFF
This is used to turn off streaming.

6.4.3. SYSFS Software Design Interfaces

Currently we are not supporting the sysfs interfaces for functions like changing
the output, changing the mode and alpha blending. But bulk of sysfs entries
are exported by DSS library. Please refer to the Migration guide for detailed
explanation on sysfs entries supported.
Version 02.01.01.08
Note
SYSFS entries are not included as part of official release and are not tested
to the extent of productization.
Platform Support Products
Display Driver
SYSFS Software Design Interfaces
105