1 /* SPDX-License-Identifier: (GPL-2.0+) */
3 * Copyright © 2017-2019 Intel Corporation
6 * Ramalingam C <ramalingam.c@intel.com>
9 #ifndef _I915_MEI_HDCP_INTERFACE_H_
10 #define _I915_MEI_HDCP_INTERFACE_H_
12 #include <linux/mutex.h>
13 #include <linux/device.h>
14 #include <drm/drm_hdcp.h>
17 * enum hdcp_port_type - HDCP port implementation type defined by ME FW
18 * @HDCP_PORT_TYPE_INVALID: Invalid hdcp port type
19 * @HDCP_PORT_TYPE_INTEGRATED: In-Host HDCP2.x port
20 * @HDCP_PORT_TYPE_LSPCON: HDCP2.2 discrete wired Tx port with LSPCON
22 * @HDCP_PORT_TYPE_CPDP: HDCP2.2 discrete wired Tx port using the CPDP (DP 1.3)
26 HDCP_PORT_TYPE_INVALID,
27 HDCP_PORT_TYPE_INTEGRATED,
28 HDCP_PORT_TYPE_LSPCON,
33 * enum hdcp_wired_protocol - HDCP adaptation used on the port
34 * @HDCP_PROTOCOL_INVALID: Invalid HDCP adaptation protocol
35 * @HDCP_PROTOCOL_HDMI: HDMI adaptation of HDCP used on the port
36 * @HDCP_PROTOCOL_DP: DP adaptation of HDCP used on the port
38 enum hdcp_wired_protocol {
39 HDCP_PROTOCOL_INVALID,
45 MEI_DDI_INVALID_PORT = 0x0,
53 MEI_DDI_RANGE_END = MEI_DDI_A,
57 * enum mei_fw_tc - ME Firmware defined index for transcoders
58 * @MEI_INVALID_TRANSCODER: Index for Invalid transcoder
59 * @MEI_TRANSCODER_EDP: Index for EDP Transcoder
60 * @MEI_TRANSCODER_DSI0: Index for DSI0 Transcoder
61 * @MEI_TRANSCODER_DSI1: Index for DSI1 Transcoder
62 * @MEI_TRANSCODER_A: Index for Transcoder A
63 * @MEI_TRANSCODER_B: Index for Transcoder B
64 * @MEI_TRANSCODER_C: Index for Transcoder C
65 * @MEI_TRANSCODER_D: Index for Transcoder D
68 MEI_INVALID_TRANSCODER = 0x00,
72 MEI_TRANSCODER_A = 0x10,
79 * struct hdcp_port_data - intel specific HDCP port data
80 * @fw_ddi: ddi index as per ME FW
81 * @fw_tc: transcoder index as per ME FW
82 * @port_type: HDCP port type as per ME FW classification
83 * @protocol: HDCP adaptation as per ME FW
84 * @k: No of streams transmitted on a port. Only on DP MST this is != 1
85 * @seq_num_m: Count of RepeaterAuth_Stream_Manage msg propagated.
86 * Initialized to 0 on AKE_INIT. Incremented after every successful
87 * transmission of RepeaterAuth_Stream_Manage message. When it rolls
88 * over re-Auth has to be triggered.
89 * @streams: struct hdcp2_streamid_type[k]. Defines the type and id for the
92 struct hdcp_port_data {
93 enum mei_fw_ddi fw_ddi;
99 struct hdcp2_streamid_type *streams;
103 * struct i915_hdcp_component_ops- ops for HDCP2.2 services.
104 * @owner: Module providing the ops
105 * @initiate_hdcp2_session: Initiate a Wired HDCP2.2 Tx Session.
106 * And Prepare AKE_Init.
107 * @verify_receiver_cert_prepare_km: Verify the Receiver Certificate
108 * AKE_Send_Cert and prepare
109 AKE_Stored_Km/AKE_No_Stored_Km
110 * @verify_hprime: Verify AKE_Send_H_prime
111 * @store_pairing_info: Store pairing info received
112 * @initiate_locality_check: Prepare LC_Init
113 * @verify_lprime: Verify lprime
114 * @get_session_key: Prepare SKE_Send_Eks
115 * @repeater_check_flow_prepare_ack: Validate the Downstream topology
116 * and prepare rep_ack
117 * @verify_mprime: Verify mprime
118 * @enable_hdcp_authentication: Mark a port as authenticated.
119 * @close_hdcp_session: Close the Wired HDCP Tx session per port.
120 * This also disables the authenticated state of the port.
122 struct i915_hdcp_component_ops {
124 * @owner: mei_hdcp module
126 struct module *owner;
128 int (*initiate_hdcp2_session)(struct device *dev,
129 struct hdcp_port_data *data,
130 struct hdcp2_ake_init *ake_data);
131 int (*verify_receiver_cert_prepare_km)(struct device *dev,
132 struct hdcp_port_data *data,
133 struct hdcp2_ake_send_cert
136 struct hdcp2_ake_no_stored_km
139 int (*verify_hprime)(struct device *dev,
140 struct hdcp_port_data *data,
141 struct hdcp2_ake_send_hprime *rx_hprime);
142 int (*store_pairing_info)(struct device *dev,
143 struct hdcp_port_data *data,
144 struct hdcp2_ake_send_pairing_info
146 int (*initiate_locality_check)(struct device *dev,
147 struct hdcp_port_data *data,
148 struct hdcp2_lc_init *lc_init_data);
149 int (*verify_lprime)(struct device *dev,
150 struct hdcp_port_data *data,
151 struct hdcp2_lc_send_lprime *rx_lprime);
152 int (*get_session_key)(struct device *dev,
153 struct hdcp_port_data *data,
154 struct hdcp2_ske_send_eks *ske_data);
155 int (*repeater_check_flow_prepare_ack)(struct device *dev,
156 struct hdcp_port_data *data,
157 struct hdcp2_rep_send_receiverid_list
159 struct hdcp2_rep_send_ack
161 int (*verify_mprime)(struct device *dev,
162 struct hdcp_port_data *data,
163 struct hdcp2_rep_stream_ready *stream_ready);
164 int (*enable_hdcp_authentication)(struct device *dev,
165 struct hdcp_port_data *data);
166 int (*close_hdcp_session)(struct device *dev,
167 struct hdcp_port_data *data);
171 * struct i915_hdcp_component_master - Used for communication between i915
172 * and mei_hdcp drivers for the HDCP2.2 services
173 * @mei_dev: device that provide the HDCP2.2 service from MEI Bus.
174 * @hdcp_ops: Ops implemented by mei_hdcp driver, used by i915 driver.
176 struct i915_hdcp_comp_master {
177 struct device *mei_dev;
178 const struct i915_hdcp_component_ops *ops;
180 /* To protect the above members. */
184 #endif /* _I915_MEI_HDCP_INTERFACE_H_ */