i915/display/intel_hdcp_shim.h

1 /* SPDX-License-Identifier: MIT */
24  * and the bus-specific code. What that means is that HDCP over HDMI differs
25  * from HDCP over DP, so to account for these differences, we need to
29  *	- DP AUX vs. DDC
30  *		HDCP registers on the receiver are set via DP AUX for DP, and
32  *	- Receiver register offsets
33  *		The offsets of the registers are different for DP vs. HDMI
34  *	- Receiver register masks/offsets
36  *		place on DP vs HDMI
37  *	- Receiver register names
38  *		Seriously. In the DP spec, the 16-bit register containing
40  *		BSTATUS. To confuse matters further, DP has a BSTATUS register
42  *	- KSV FIFO
43  *		On HDMI, the ksv fifo is read all at once, whereas on DP it must
45  *	- Aksv output
47  *		to send it over DP AUX vs DDC
57 	 * Reads BINFO from DP receivers and BSTATUS from HDMI receivers. The
80 	/* Reads a 32-bit part of V' from the receiver */
89 	/* Enable/Disable stream encryption on DP MST Transport Link */
90 	int (*stream_encryption)(struct intel_connector *connector,
95 			   struct intel_connector *connector);
101 	/* HDCP adaptation(DP/HDMI) required on the port */
105 	int (*hdcp_2_2_get_capability)(struct intel_connector *connector,
109 	int (*write_2_2_msg)(struct intel_connector *connector,
113 	int (*read_2_2_msg)(struct intel_connector *connector,
117 	 * Implementation of DP HDCP2.2 Errata for the communication of stream
118 	 * type to Receivers. In DP HDCP2.2 Stream type is one of the input to
119 	 * the HDCP2.2 Cipher for En/De-Cryption. Not applicable for HDMI.
121 	int (*config_stream_type)(struct intel_connector *connector,
124 	/* Enable/Disable HDCP 2.2 stream encryption on DP MST Transport Link */
125 	int (*stream_2_2_encryption)(struct intel_connector *connector,
130 			      struct intel_connector *connector);
133 	int (*get_remote_hdcp_capability)(struct intel_connector *connector,