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This patch adds the framework required to add HDCP support to intel connectors. It implements Aksv loading from fuse, and parts 1/2/3 of the HDCP authentication scheme. Note that without shim implementations, this does not actually implement HDCP. That will come in subsequent patches. Changes in v2: - Don't open code wait_fors (Chris) - drm_hdcp.c under MIT license (Daniel) - Move intel_hdcp_disable() call above ddi_disable (Ram) - Fix // comments (I wore a cone of shame for 12 hours to atone) (Daniel) - Justify intel_hdcp_shim with comments (Daniel) - Fixed async locking issues by adding hdcp_mutex (Daniel) - Don't alter connector_state in enable/disable (Daniel) Changes in v3: - Added hdcp_mutex/hdcp_value to make async reasonable - Added hdcp_prop_work to separate link checking & property setting - Added new helper for atomic_check state tracking (Daniel) - Moved enable/disable into atomic_commit with matching helpers - Moved intel_hdcp_check_link out of all locks when called from dp - Bumped up ksv_fifo timeout (noticed failure on one of my dongles) Changes in v4: - Remove SKL_ prefix from most register names (Daniel) - Move enable/disable back to modeset path (Daniel) - s/get_random_long/get_random_u32/ (Daniel) - Remove mode_config.mutex lock in prop_work (Daniel) - Add intel_hdcp_init to handle init of conn components (Daniel) - Actually check return value of attach_property - Check Bksv is valid before trying to authenticate (Ram) Changes in v5: - checkpatch whitespace changes - s/DRM_MODE_CONTENT_PROTECTION_OFF/DRM_MODE_CONTENT_PROTECTION_UNDESIRED/ - Fix ksv list wait timeout (actually wait 5s) - Increase the R0 timeout to 300ms (Ram) Changes in v6: - SPDX license Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Ramalingam C <ramalingm.c@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180108195545.218615-6-seanpaul@chromium.org |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.