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Currently, even though there is a bit to control FEC enable/disable individually, the FEC Decode Enable sequence is sent by the SOC only once TRANS_CONF enable is set. This ties the FEC enabling too tightly to modeset and therefore cannot be re-issued (in case of failure) without a modeset. From PTL, FEC_DECODE_EN sequence can be sent to a DPRX independent of TRANS_CONF enable. This allows us to re-issue an FEC_DECODE_EN sequence without a modeset. Hence allowing us to have a retry mechanism in case the DPRX does not respond with an FEC_ENABLE within certain amount of time. While at it, replace struct drm_i915_private with struct intel_display v4: - More code refactor [Jani] - use struct intel_display [Jani] - Optimize logging [Jani] v3: - Make the commit message more legible [Jani] - Refactor code to re-use existing code [Jani] - Do away with platform dependent FEC enable checks [Jani] v2: - Refactor code to avoid duplication and improve readability [Jani] - In case of PTL, wait for FEC status directly after FEC enable [Srikanth] - Wait for FEC_ENABLE_LIVE_STATUS to be cleared before re-enabling FEC [Srikanth] Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241024061002.4085137-1-chaitanya.kumar.borah@intel.com |
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| README | ||
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.