mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-09 17:17:04 -04:00
5d0396114e
TRANS_DDI_FUNC_CTL asks us to disable hdcp line rekeying when not in hdcp 2.2 and we are not using an hdmi transcoder and it need to be enabled when we are using an HDMI transcoder to enable HDCP 1.4. We use intel_de_rmw cycles to update TRANS_DDI_FUNC_CTL register so we cannot depend on the value being 0 by default everytime which calls for seprate handling of HDCP 1.4 case. --v2 -Use the exising function and modify it based on a bool rather than have a different function [Matt] --v3 -No need for kzalloc [Jani] --v4 -i915_reg_t should not be pointer [Jani] -use rekey_bit to ensure when writing to reg everything is initialized Bspec: 69964, 50493, 50054 Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com> Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241107022807.869744-1-suraj.kandpal@intel.com
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 reStructuredText 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.