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Because video duration involves calculating the streaming time, and i2c communication incurs too many XTALK register settings every 4 bytes with i2c START and STOP. So we have opted switch to the i2c burst method. This method involves writing the XTALK registers in the order of the register block. The start streaming time can be reduced from around 400ms to 150ms [Sakari Ailus: Drop unneeded dev_dbg().] Signed-off-by: Jason Chen <jason.z.chen@intel.com> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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.
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.