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6f92337b6b
This is the sync up with the canonical definition of the display protocol in Xen. 1. Add protocol version as an integer Version string, which is in fact an integer, is hard to handle in the code that supports different protocol versions. To simplify that also add the version as an integer. 2. Pass buffer offset with XENDISPL_OP_DBUF_CREATE There are cases when display data buffer is created with non-zero offset to the data start. Handle such cases and provide that offset while creating a display buffer. 3. Add XENDISPL_OP_GET_EDID command Add an optional request for reading Extended Display Identification Data (EDID) structure which allows better configuration of the display connectors over the configuration set in XenStore. With this change connectors may have multiple resolutions defined with respect to detailed timing definitions and additional properties normally provided by displays. If this request is not supported by the backend then visible area is defined by the relevant XenStore's "resolution" property. If backend provides extended display identification data (EDID) with XENDISPL_OP_GET_EDID request then EDID values must take precedence over the resolutions defined in XenStore. 4. Bump protocol version to 2. Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Reviewed-by: Juergen Gross <jgross@suse.com> Link: https://lore.kernel.org/r/20200813062113.11030-5-andr2000@gmail.com Signed-off-by: Juergen Gross <jgross@suse.com> |
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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.
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.