linux/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-hdcp.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Cadence MHDP8546 DP bridge driver.
 *
 * Copyright (C) 2020 Cadence Design Systems, Inc.
 *
 */

#include <linux/io.h>
#include <linux/iopoll.h>

#include <asm/unaligned.h>

#include <drm/display/drm_hdcp_helper.h>

#include "cdns-mhdp8546-hdcp.h"

static int cdns_mhdp_secure_mailbox_read(struct cdns_mhdp_device *mhdp)
{ … }

static int cdns_mhdp_secure_mailbox_write(struct cdns_mhdp_device *mhdp,
					  u8 val)
{ … }

static int cdns_mhdp_secure_mailbox_recv_header(struct cdns_mhdp_device *mhdp,
						u8 module_id,
						u8 opcode,
						u16 req_size)
{ … }

static int cdns_mhdp_secure_mailbox_recv_data(struct cdns_mhdp_device *mhdp,
					      u8 *buff, u16 buff_size)
{ … }

static int cdns_mhdp_secure_mailbox_send(struct cdns_mhdp_device *mhdp,
					 u8 module_id,
					 u8 opcode,
					 u16 size,
					 u8 *message)
{ … }

static int cdns_mhdp_hdcp_get_status(struct cdns_mhdp_device *mhdp,
				     u16 *hdcp_port_status)
{ … }

static u8 cdns_mhdp_hdcp_handle_status(struct cdns_mhdp_device *mhdp,
				       u16 status)
{ … }

static int cdns_mhdp_hdcp_rx_id_valid_response(struct cdns_mhdp_device *mhdp,
					       u8 valid)
{ … }

static int cdns_mhdp_hdcp_rx_id_valid(struct cdns_mhdp_device *mhdp,
				      u8 *recv_num, u8 *hdcp_rx_id)
{ … }

static int cdns_mhdp_hdcp_km_stored_resp(struct cdns_mhdp_device *mhdp,
					 u32 size, u8 *km)
{ … }

static int cdns_mhdp_hdcp_tx_is_km_stored(struct cdns_mhdp_device *mhdp,
					  u8 *resp, u32 size)
{ … }

static int cdns_mhdp_hdcp_tx_config(struct cdns_mhdp_device *mhdp,
				    u8 hdcp_cfg)
{ … }

static int cdns_mhdp_hdcp_set_config(struct cdns_mhdp_device *mhdp,
				     u8 hdcp_config, bool enable)
{ … }

static int cdns_mhdp_hdcp_auth_check(struct cdns_mhdp_device *mhdp)
{ … }

static int cdns_mhdp_hdcp_check_receviers(struct cdns_mhdp_device *mhdp)
{ … }

static int cdns_mhdp_hdcp_auth_22(struct cdns_mhdp_device *mhdp)
{ … }

static inline int cdns_mhdp_hdcp_auth_14(struct cdns_mhdp_device *mhdp)
{ … }

static int cdns_mhdp_hdcp_auth(struct cdns_mhdp_device *mhdp,
			       u8 hdcp_config)
{ … }

static int _cdns_mhdp_hdcp_disable(struct cdns_mhdp_device *mhdp)
{ … }

static int _cdns_mhdp_hdcp_enable(struct cdns_mhdp_device *mhdp, u8 content_type)
{ … }

static int cdns_mhdp_hdcp_check_link(struct cdns_mhdp_device *mhdp)
{ … }

static void cdns_mhdp_hdcp_check_work(struct work_struct *work)
{ … }

static void cdns_mhdp_hdcp_prop_work(struct work_struct *work)
{ … }

int cdns_mhdp_hdcp_set_lc(struct cdns_mhdp_device *mhdp, u8 *val)
{ … }

int
cdns_mhdp_hdcp_set_public_key_param(struct cdns_mhdp_device *mhdp,
				    struct cdns_hdcp_tx_public_key_param *val)
{ … }

int cdns_mhdp_hdcp_enable(struct cdns_mhdp_device *mhdp, u8 content_type)
{ … }

int cdns_mhdp_hdcp_disable(struct cdns_mhdp_device *mhdp)
{ … }

void cdns_mhdp_hdcp_init(struct cdns_mhdp_device *mhdp)
{ … }