[PATCH v4 00/41] drm/i915: Implement HDCP2.2

Tue May 29 06:57:29 UTC 2018

On Mon, May 21, 2018 at 06:23:19PM +0530, Ramalingam C wrote:
> The sequence for HDCP2.2 authentication and encryption is implemented
> in I915. Encoder specific implementations are moved into hdcp_shim.
> 
> Intel HWs supports HDCP2.2 through ME FW. Hence this series
> introduces a client driver for mei bus, so that for HDCP2.2
> authentication, HDCP2.2 stack in I915 can avail the services from
> ME FW.
> 
> DRM_I915 selects INTEL_MEI_HDCP, which selects INTEL_MEI_ME and
> INTEL_MEI. If we are interested in disabling the MEI_HDCP and MEI Bus
> then we need an option to disable the HDCP2.2 in I915
> (like DRM_I915_HDCP2.2!?). Till then they are binded.
> 
> Userspace interface remains unchanged as version agnostic. When
> userspace request for HDCP enable, Kernel will detect the HDCP source
> and sink's HDCP version(1.4/2.2)capability and enable the best capable
> version for that combination.
> 
> This series enables the HDCP2.2 for Type0 content streams.
> 
> Thanks a lot for Usyskin, Alexander and Uma shankar for the review of v3.
> Thanks Daniel vetter for guiding me to test and confirm that there is no
> locking issue with respect to notifier usage between I915 and MEI_HDCP.
> 
> Major Changes in v4:
>   - GMBus Changes to implement the burst read as generic
> 	[Jani, Ville and Daniel]
>   - Polling is added for extra Notifier notification when I915 and
> 	MEI_HDCP are modules.
>   - Comment and style issues and typos are fixed [Uma and Alexander]
>   - INTEL_MEI_HDCP, INTEL_MEI_ME and INTEL_MEI are selected by I915.
>   - Fixed the #if in include/linux/mei_hdcp.h for build issues.
> 
> GMBus changes are added here for completeness of the series. They are
> in review at https://patchwork.freedesktop.org/series/41632/ also.

Please reply with a link to your github here (and include it in your next
cover letter too). I can't ever find it when I need it :-/

Thanks, Daniel

> 
> Ramalingam C (40):
>   drm: hdcp2.2 authentication msg definitions
>   drm: HDMI and DP specific HDCP2.2 defines
>   misc/mei/hdcp: Client driver for HDCP application
>   misc/mei/hdcp: Notifier chain for mei cldev state change
>   misc/mei/hdcp: Define ME FW interface for HDCP2.2
>   linux/mei: Header for mei_hdcp driver interface
>   misc/mei/hdcp: Initiate Wired HDCP2.2 Tx Session
>   misc/mei/hdcp: Verify Receiver Cert and prepare km
>   misc/mei/hdcp: Verify H_prime
>   misc/mei/hdcp: Store the HDCP Pairing info
>   misc/mei/hdcp: Initiate Locality check
>   misc/mei/hdcp: Verify L_prime
>   misc/mei/hdcp: Prepare Session Key
>   misc/mei/hdcp: Repeater topology verification and ack
>   misc/mei/hdcp: Verify M_prime
>   misc/mei/hdcp: Enabling the HDCP authentication
>   misc/mei/hdcp: Closing wired HDCP2.2 Tx Session
>   drm/i915: wrapping all hdcp var into intel_hdcp
>   drm/i915: Define HDCP2.2 related variables
>   drm/i915: Define Intel HDCP2.2 registers
>   drm/i915: Wrappers for mei HDCP2.2 services
>   drm/i915: Implement HDCP2.2 receiver authentication
>   drm/i915: Implement HDCP2.2 repeater authentication
>   drm/i915: Enable and Disable HDCP2.2 port encryption
>   drm/i915: Implement HDCP2.2 En/Dis-able
>   drm/i915: Implement HDCP2.2 link integrity check
>   drm/i915: Handle HDCP2.2 downstream topology change
>   drm/i915: Pullout the bksv read and validation
>   drm/i915: Initialize HDCP2.2 and its MEI interface
>   drm/i915: Schedule hdcp_check_link in _intel_hdcp_enable
>   drm/i915: Enable superior HDCP ver that is capable
>   drm/i915: Enable HDCP1.4 incase of HDCP2.2 failure
>   drm/i915: hdcp_check_link only on CP_IRQ
>   drm/i915: Check HDCP 1.4 and 2.2 link on CP_IRQ
>   drm/i915/gmbus: Increase the Bytes per Rd/Wr Op
>   drm/i915/gmbus: Enable burst read
>   drm/i915: Implement the HDCP2.2 support for DP
>   drm/i915: Implement the HDCP2.2 support for HDMI
>   drm/i915: Add HDCP2.2 support for DP connectors
>   drm/i915: Add HDCP2.2 support for HDMI connectors
> 
> Tomas Winkler (1):
>   mei: bus: whitelist hdcp client
> 
>  drivers/gpu/drm/i915/Kconfig         |    1 +
>  drivers/gpu/drm/i915/i915_drv.h      |    3 +
>  drivers/gpu/drm/i915/i915_reg.h      |   34 ++
>  drivers/gpu/drm/i915/intel_display.c |    7 +-
>  drivers/gpu/drm/i915/intel_dp.c      |  370 +++++++++++-
>  drivers/gpu/drm/i915/intel_drv.h     |   88 ++-
>  drivers/gpu/drm/i915/intel_hdcp.c    | 1096 ++++++++++++++++++++++++++++++++--
>  drivers/gpu/drm/i915/intel_hdmi.c    |  189 +++++-
>  drivers/gpu/drm/i915/intel_i2c.c     |   71 ++-
>  drivers/misc/mei/Kconfig             |    7 +
>  drivers/misc/mei/Makefile            |    2 +
>  drivers/misc/mei/bus-fixup.c         |   16 +
>  drivers/misc/mei/hdcp/Makefile       |    6 +
>  drivers/misc/mei/hdcp/mei_hdcp.c     |  817 +++++++++++++++++++++++++
>  drivers/misc/mei/hdcp/mei_hdcp.h     |  415 +++++++++++++
>  include/drm/drm_dp_helper.h          |   51 ++
>  include/drm/drm_hdcp.h               |  232 +++++++
>  include/linux/mei_hdcp.h             |  232 +++++++
>  18 files changed, 3546 insertions(+), 91 deletions(-)
>  create mode 100644 drivers/misc/mei/hdcp/Makefile
>  create mode 100644 drivers/misc/mei/hdcp/mei_hdcp.c
>  create mode 100644 drivers/misc/mei/hdcp/mei_hdcp.h
>  create mode 100644 include/linux/mei_hdcp.h
> 
> -- 
> 2.7.4
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch