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832f33366c
Adds facility to directly query the hardware speed limits of subdevices, in particular for scan_begin and convert signals. This information can be critical for integrating comedi with other hardware modules, and also comedi modules together with software where software requires specific timing capabilities in order to properly coordinate multiple devices. Currently, comedi_command_test almost satisfies this need, but really only for when *_src == TRIG_TIMER. For *_src == TRIG_EXT, comedi_command_test does not help at all. For many subdevices, one might simply use *_src==TRIG_TIMER in command_test in order to determine these limits. For other subdevices, this tactic does not work since *_src == TRIG_TIMER might not be valid. There is also the possibility that the timing limits are different between the TRIG_TIMER and TRIG_EXT modes. Signed-off-by: Spencer E. Olson <olsonse@umich.edu> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.