[PATCH v4 00/41] drm/i915: Implement HDCP2.2
Daniel Vetter
daniel at ffwll.ch
Tue May 29 08:30:49 UTC 2018
On Tue, May 29, 2018 at 07:51:56AM +0000, C, Ramalingam wrote:
> > -----Original Message-----
> > From: Daniel Vetter [mailto:daniel.vetter at ffwll.ch] On Behalf Of Daniel Vetter
> > Sent: Tuesday, May 29, 2018 12:27 PM
> > To: C, Ramalingam <ramalingam.c at intel.com>
> > Cc: intel-gfx at lists.freedesktop.org; dri-devel at lists.freedesktop.org;
> > seanpaul at chromium.org; daniel at ffwll.ch; chris at chris-wilson.co.uk;
> > jani.nikula at linux.intel.com; Winkler, Tomas <tomas.winkler at intel.com>;
> > Usyskin, Alexander <alexander.usyskin at intel.com>; Shankar, Uma
> > <uma.shankar at intel.com>; Sharma, Shashank <shashank.sharma at 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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