tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
mei: docs: add hdcp documentation
1. Add a short ducumentation for MEI HDCP driver,
and fix DOC comments in drivers/misc/mei/hdcp/mei_hdcp.c
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
authored by
Tomas Winkler
and committed by
Greg Kroah-Hartman
0475afd2
4e3d3b78
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+32
Documentation/driver-api/mei/hdcp.rst
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Documentation/driver-api/mei/hdcp.rst
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.. SPDX-License-Identifier: GPL-2.0
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HDCP:
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=====
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ME FW as a security engine provides the capability for setting up
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HDCP2.2 protocol negotiation between the Intel graphics device and
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an HDC2.2 sink.
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ME FW prepares HDCP2.2 negotiation parameters, signs and encrypts them
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according the HDCP 2.2 spec. The Intel graphics sends the created blob
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to the HDCP2.2 sink.
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Similarly, the HDCP2.2 sink's response is transferred to ME FW
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for decryption and verification.
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Once all the steps of HDCP2.2 negotiation are completed,
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upon request ME FW will configure the port as authenticated and supply
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the HDCP encryption keys to Intel graphics hardware.
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mei_hdcp driver
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---------------
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.. kernel-doc:: drivers/misc/mei/hdcp/mei_hdcp.c
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:doc: MEI_HDCP Client Driver
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mei_hdcp api
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------------
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.. kernel-doc:: drivers/misc/mei/hdcp/mei_hdcp.c
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:functions:
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+1
Documentation/driver-api/mei/mei-client-bus.rst
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Documentation/driver-api/mei/mei-client-bus.rst
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drivers/misc/mei/hdcp/mei_hdcp.c
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drivers/misc/mei/hdcp/mei_hdcp.c
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/*
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* Copyright © 2019 Intel Corporation
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*
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* Mei_hdcp.c: HDCP client driver for mei bus
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* mei_hdcp.c: HDCP client driver for mei bus
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*
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* Author:
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* Ramalingam C <ramalingam.c@intel.com>
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/**
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* DOC: MEI_HDCP Client Driver
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*
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* This is a client driver to the mei_bus to make the HDCP2.2 services of
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* ME FW available for the interested consumers like I915.
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*
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* This module will act as a translation layer between HDCP protocol
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* implementor(I915) and ME FW by translating HDCP2.2 authentication
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* messages to ME FW command payloads and vice versa.
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* The mei_hdcp driver acts as a translation layer between HDCP 2.2
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* protocol implementer (I915) and ME FW by translating HDCP2.2
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* negotiation messages to ME FW command payloads and vice versa.
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*/
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#include <linux/module.h>