linux/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c

/*
 * Copyright 2018 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: AMD
 *
 */

#include <linux/delay.h>

#include "hdcp.h"

static inline enum mod_hdcp_status check_receiver_id_list_ready(struct mod_hdcp *hdcp)
{ … }

static inline enum mod_hdcp_status check_hdcp2_capable(struct mod_hdcp *hdcp)
{ … }

static inline enum mod_hdcp_status check_reauthentication_request(
		struct mod_hdcp *hdcp)
{ … }

static inline enum mod_hdcp_status check_link_integrity_failure_dp(
		struct mod_hdcp *hdcp)
{ … }

static enum mod_hdcp_status check_ake_cert_available(struct mod_hdcp *hdcp)
{ … }

static enum mod_hdcp_status check_h_prime_available(struct mod_hdcp *hdcp)
{ … }

static enum mod_hdcp_status check_pairing_info_available(struct mod_hdcp *hdcp)
{ … }

static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp)
{ … }

static enum mod_hdcp_status check_stream_ready_available(struct mod_hdcp *hdcp)
{ … }

static inline uint8_t get_device_count(struct mod_hdcp *hdcp)
{ … }

static enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp)
{ … }

static uint8_t process_rxstatus(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input,
		enum mod_hdcp_status *status)
{ … }

static enum mod_hdcp_status known_hdcp2_capable_rx(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status send_ake_init(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status validate_ake_cert(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status send_no_stored_km(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status read_h_prime(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status read_pairing_info_and_validate_h_prime(
		struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status send_stored_km(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status validate_h_prime(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status exchange_ks_and_test_for_repeater(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status enable_encryption(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status wait_for_rx_id_list(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status verify_rx_id_list_and_send_ack(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status send_stream_management(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status validate_stream_ready(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status determine_rx_hdcp_capable_dp(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

static enum mod_hdcp_status send_content_stream_type_dp(struct mod_hdcp *hdcp,
		struct mod_hdcp_event_context *event_ctx,
		struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

enum mod_hdcp_status mod_hdcp_hdcp2_execution(struct mod_hdcp *hdcp,
	struct mod_hdcp_event_context *event_ctx,
	struct mod_hdcp_transition_input_hdcp2 *input)
{ … }

enum mod_hdcp_status mod_hdcp_hdcp2_dp_execution(struct mod_hdcp *hdcp,
	struct mod_hdcp_event_context *event_ctx,
	struct mod_hdcp_transition_input_hdcp2 *input)
{ … }