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68f22c0c99
The driver currently sets the echo suppression bit by default when rs485 is enabled. Naturally it disables any data retrieval in rs485 mode while RTSn is pushed up. The receiver gate (RX_) can be enabled just by clearing (or not setting) the EchoSuprs bit of mode2 register. So by setting or clearing the bit we implement the SER_RS485_RX_DURING_TX rs485 flag support. Signed-off-by: Serge Semin <fancer.lancer@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.