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

[Daniel Vetter <daniel@ffwll.ch>]

On Tue, May 29, 2018 at 07:51:56AM +0000, C, Ramalingam wrote:
> > -----Original Message-----
> > From: Daniel Vetter [mailto:daniel.vetter@ffwll.ch] On Behalf Of Daniel Vetter
> > Sent: Tuesday, May 29, 2018 12:27 PM
> > To: C, Ramalingam <ramalingam.c@intel.com>
> > Cc: intel-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org;
> > seanpaul@chromium.org; daniel@ffwll.ch; chris@chris-wilson.co.uk;
> > jani.nikula@linux.intel.com; Winkler, Tomas <tomas.winkler@intel.com>;
> > Usyskin, Alexander <alexander.usyskin@intel.com>; Shankar, Uma
> > <uma.shankar@intel.com>; Sharma, Shashank <shashank.sharma@intel.com>
> > Subject: Re: [PATCH v4 00/41] drm/i915: Implement HDCP2.2
> > 
> > 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 :-/
> 
> You can find a github repo for HDCP2.2 v4 series at https://github.com/ramalingampc2008/drm-tip 

Even nicer if you directly supply what I need to feed to git fetch (like a
git pull request over email):

https://github.com/ramalingampc2008/drm-tip.git hdcp2_2_v4

Then I can do a git fetch && git checkout FETCH_HEAD.

Thanks, Daniel

> 
> Thanks,
> Ram 
> 
> > 
> > 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

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