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

/*
 * Copyright 2019 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 "hdcp.h"

#ifndef MIN
#define MIN …
#endif
#define HDCP_I2C_ADDR …
#define KSV_READ_SIZE …
#define HDCP_MAX_AUX_TRANSACTION_SIZE …

#define DP_CP_IRQ …

enum mod_hdcp_ddc_message_id { … };

static const uint8_t hdcp_i2c_offsets[] = …;

static const uint32_t hdcp_dpcd_addrs[] = …;

static enum mod_hdcp_status read(struct mod_hdcp *hdcp,
		enum mod_hdcp_ddc_message_id msg_id,
		uint8_t *buf,
		uint32_t buf_len)
{ … }

static enum mod_hdcp_status read_repeatedly(struct mod_hdcp *hdcp,
		enum mod_hdcp_ddc_message_id msg_id,
		uint8_t *buf,
		uint32_t buf_len,
		uint8_t read_size)
{ … }

static enum mod_hdcp_status write(struct mod_hdcp *hdcp,
		enum mod_hdcp_ddc_message_id msg_id,
		uint8_t *buf,
		uint32_t buf_len)
{ … }

enum mod_hdcp_status mod_hdcp_read_bksv(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_bcaps(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_bstatus(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_r0p(struct mod_hdcp *hdcp)
{ … }

/* special case, reading repeatedly at the same address, don't use read() */
enum mod_hdcp_status mod_hdcp_read_ksvlist(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_vp(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_binfo(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_write_aksv(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_write_ainfo(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_write_an(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_hdcp2version(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_rxcaps(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_rxstatus(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_ake_cert(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_h_prime(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_pairing_info(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_l_prime(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_rx_id_list(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_read_stream_ready(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_write_ake_init(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_write_no_stored_km(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_write_stored_km(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_write_lc_init(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_write_eks(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_write_repeater_auth_ack(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_write_stream_manage(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_write_content_type(struct mod_hdcp *hdcp)
{ … }

enum mod_hdcp_status mod_hdcp_clear_cp_irq_status(struct mod_hdcp *hdcp)
{ … }