[PATCH v8 00/35] drm/i915: Implement HDCP2.2

[Ramalingam C]

This series enables the HDCP2.2 for I915. The sequence for HDCP2.2
authentication and encryption is implemented as a generic flow
between HDMI and DP. 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. To enable this client driver set the config variable
CONFIG_INTEL_MEI_HDCP.

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 strams.

Major changes in v8:
  - Mei_hdcp component binding status will impact HDCP2.2 alone.
  - hdcp2_check_work is cancelled only when hdcp2 is supported.
  - Errors due to sinks are reported as DEBUG logs.
  - HDCP2.2 auth will be attempted only if the mei_hdcp interface is up.
  - Maintainability ease MEI i/f changes are gathered in single patch.
  - intel_hdcp_exit is defined and used.

To ease the review process, series is hosted at
https://github.com/ramalingampc2008/drm-tip.git hdcp2_2_v8

Ramalingam C (33):
  drm/i915: debug log for REPLY_ACK missing
  drm/i915: Increase timeout for Encrypt status change
  linux/mei: Header for mei_hdcp driver interface
  drm/i915: Initialize HDCP2.2
  drm/i915: MEI interface definition
  drm/i915: Enable and Disable of HDCP2.2
  drm/i915: Implement HDCP2.2 receiver authentication
  drm/i915: Implement HDCP2.2 repeater authentication
  drm/i915: Implement HDCP2.2 link integrity check
  drm/i915: Handle HDCP2.2 downstream topology change
  drm/i915: Check HDCP 1.4 and 2.2 link on CP_IRQ
  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
  misc/mei/hdcp: Client driver for HDCP application
  misc/mei/hdcp: Define ME FW interface for HDCP2.2
  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
  misc/mei/hdcp: Component framework for I915 Interface
  drm/i915: Commit CP without modeset
  drm/i915: Fix KBL HDCP2.2 encrypt status signalling
  FOR_TEST: i915/Kconfig: Select mei_hdcp by I915
  FOR_TESTING_ONLY: debugfs: Excluding the LSPCon for HDCP1.4

Tomas Winkler (2):
  mei: bus: whitelist hdcp client
  mei: bus: export to_mei_cl_device for mei client device drivers

 MAINTAINERS                          |    1 +
 drivers/gpu/drm/i915/i915_debugfs.c  |   10 +-
 drivers/gpu/drm/i915/i915_drv.c      |    2 +
 drivers/gpu/drm/i915/i915_drv.h      |    2 +
 drivers/gpu/drm/i915/intel_ddi.c     |    7 -
 drivers/gpu/drm/i915/intel_display.c |   21 +-
 drivers/gpu/drm/i915/intel_dp.c      |  349 ++++++++-
 drivers/gpu/drm/i915/intel_drv.h     |   81 +-
 drivers/gpu/drm/i915/intel_hdcp.c    | 1390 +++++++++++++++++++++++++++++++---
 drivers/gpu/drm/i915/intel_hdmi.c    |  193 ++++-
 drivers/misc/mei/Kconfig             |    8 +
 drivers/misc/mei/Makefile            |    2 +
 drivers/misc/mei/bus-fixup.c         |   16 +
 drivers/misc/mei/bus.c               |    1 -
 drivers/misc/mei/hdcp/Makefile       |    7 +
 drivers/misc/mei/hdcp/mei_hdcp.c     |  825 ++++++++++++++++++++
 drivers/misc/mei/hdcp/mei_hdcp.h     |  366 +++++++++
 include/drm/drm_hdcp.h               |   23 +
 include/drm/i915_component.h         |   71 ++
 include/linux/mei_cl_bus.h           |    2 +
 include/linux/mei_hdcp.h             |   91 +++
 21 files changed, 3340 insertions(+), 128 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

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2.7.4