mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-04 04:28:10 -04:00
93ac092f05
DSC is supported on eDP starting GEN 10 display (on GLK) and on DP starting GEN 11. This patch implements the discovery phase of DSC. On hotplug, source reads the DSC DPCD register set (0x00060 - 0x0006F) to read the decompression capabilities of the sink device. This entire block of registers is cached in intel_dp so that capability information can be used during DSC configuration phase during compute_config phase of the modeset. For eDP, this caching happens during the eDP initialization. This caching is done only for eDP and DP rev >= 1.4 v5: * Fix the block comment (Gaurav) * Fix the commit message DSC DPCD addresses (Gaurav) * Use DRM_ERROR for dpcd_read fail (Gaurav,Anusha) v4: * Cache these only for Gen >= 11 v3: * Remove the dsc_sink_support field in intel_dp (Jani N) v2: * Clear the cached registers on hotplug always (Jani N) * Combine the eDP and DP caching in same function (Jani N) Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Cc: Gaurav K Singh <gaurav.k.singh@intel.com> Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com> Reviewed-by: Gaurav K Singh <gaurav.k.singh@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181031001923.31442-3-manasi.d.navare@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 Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
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.