150 строки
4.9 KiB
C
150 строки
4.9 KiB
C
/* SPDX-License-Identifier: (GPL-2.0+) */
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/*
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* Copyright © 2017-2018 Intel Corporation
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*
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* Authors:
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* Ramalingam C <ramalingam.c@intel.com>
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*/
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#ifndef _I915_MEI_HDCP_INTERFACE_H_
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#define _I915_MEI_HDCP_INTERFACE_H_
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#include <linux/mutex.h>
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#include <linux/device.h>
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#include <drm/drm_hdcp.h>
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#include <drm/i915_drm.h>
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/**
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* enum hdcp_port_type - HDCP port implementation type defined by ME FW
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* @HDCP_PORT_TYPE_INVALID: Invalid hdcp port type
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* @HDCP_PORT_TYPE_INTEGRATED: In-Host HDCP2.x port
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* @HDCP_PORT_TYPE_LSPCON: HDCP2.2 discrete wired Tx port with LSPCON
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* (HDMI 2.0) solution
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* @HDCP_PORT_TYPE_CPDP: HDCP2.2 discrete wired Tx port using the CPDP (DP 1.3)
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* solution
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*/
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enum hdcp_port_type {
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HDCP_PORT_TYPE_INVALID,
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HDCP_PORT_TYPE_INTEGRATED,
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HDCP_PORT_TYPE_LSPCON,
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HDCP_PORT_TYPE_CPDP
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};
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/**
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* enum hdcp_wired_protocol - HDCP adaptation used on the port
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* @HDCP_PROTOCOL_INVALID: Invalid HDCP adaptation protocol
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* @HDCP_PROTOCOL_HDMI: HDMI adaptation of HDCP used on the port
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* @HDCP_PROTOCOL_DP: DP adaptation of HDCP used on the port
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*/
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enum hdcp_wired_protocol {
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HDCP_PROTOCOL_INVALID,
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HDCP_PROTOCOL_HDMI,
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HDCP_PROTOCOL_DP
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};
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/**
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* struct hdcp_port_data - intel specific HDCP port data
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* @port: port index as per I915
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* @port_type: HDCP port type as per ME FW classification
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* @protocol: HDCP adaptation as per ME FW
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* @k: No of streams transmitted on a port. Only on DP MST this is != 1
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* @seq_num_m: Count of RepeaterAuth_Stream_Manage msg propagated.
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* Initialized to 0 on AKE_INIT. Incremented after every successful
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* transmission of RepeaterAuth_Stream_Manage message. When it rolls
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* over re-Auth has to be triggered.
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* @streams: struct hdcp2_streamid_type[k]. Defines the type and id for the
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* streams
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*/
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struct hdcp_port_data {
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enum port port;
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u8 port_type;
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u8 protocol;
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u16 k;
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u32 seq_num_m;
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struct hdcp2_streamid_type *streams;
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};
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/**
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* struct i915_hdcp_component_ops- ops for HDCP2.2 services.
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* @owner: Module providing the ops
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* @initiate_hdcp2_session: Initiate a Wired HDCP2.2 Tx Session.
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* And Prepare AKE_Init.
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* @verify_receiver_cert_prepare_km: Verify the Receiver Certificate
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* AKE_Send_Cert and prepare
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AKE_Stored_Km/AKE_No_Stored_Km
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* @verify_hprime: Verify AKE_Send_H_prime
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* @store_pairing_info: Store pairing info received
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* @initiate_locality_check: Prepare LC_Init
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* @verify_lprime: Verify lprime
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* @get_session_key: Prepare SKE_Send_Eks
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* @repeater_check_flow_prepare_ack: Validate the Downstream topology
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* and prepare rep_ack
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* @verify_mprime: Verify mprime
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* @enable_hdcp_authentication: Mark a port as authenticated.
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* @close_hdcp_session: Close the Wired HDCP Tx session per port.
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* This also disables the authenticated state of the port.
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*/
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struct i915_hdcp_component_ops {
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/**
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* @owner: mei_hdcp module
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*/
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struct module *owner;
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int (*initiate_hdcp2_session)(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_ake_init *ake_data);
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int (*verify_receiver_cert_prepare_km)(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_ake_send_cert
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*rx_cert,
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bool *km_stored,
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struct hdcp2_ake_no_stored_km
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*ek_pub_km,
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size_t *msg_sz);
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int (*verify_hprime)(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_ake_send_hprime *rx_hprime);
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int (*store_pairing_info)(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_ake_send_pairing_info
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*pairing_info);
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int (*initiate_locality_check)(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_lc_init *lc_init_data);
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int (*verify_lprime)(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_lc_send_lprime *rx_lprime);
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int (*get_session_key)(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_ske_send_eks *ske_data);
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int (*repeater_check_flow_prepare_ack)(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_rep_send_receiverid_list
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*rep_topology,
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struct hdcp2_rep_send_ack
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*rep_send_ack);
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int (*verify_mprime)(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_rep_stream_ready *stream_ready);
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int (*enable_hdcp_authentication)(struct device *dev,
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struct hdcp_port_data *data);
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int (*close_hdcp_session)(struct device *dev,
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struct hdcp_port_data *data);
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};
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/**
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* struct i915_hdcp_component_master - Used for communication between i915
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* and mei_hdcp drivers for the HDCP2.2 services
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* @mei_dev: device that provide the HDCP2.2 service from MEI Bus.
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* @hdcp_ops: Ops implemented by mei_hdcp driver, used by i915 driver.
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*/
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struct i915_hdcp_comp_master {
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struct device *mei_dev;
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const struct i915_hdcp_component_ops *ops;
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/* To protect the above members. */
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struct mutex mutex;
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};
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#endif /* _I915_MEI_HDCP_INTERFACE_H_ */
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