/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2021-2023, Qualcomm Innovation Center, Inc. All rights reserved.
 */

#ifndef __HDCP_QSEECOM_H
#define __HDCP_QSEECOM_H
#include <linux/types.h>

#define HDCP_QSEECOM_ENUM_STR(x)	#x

enum hdcp2_app_cmd {
	HDCP2_CMD_START,
	HDCP2_CMD_START_AUTH,
	HDCP2_CMD_STOP,
	HDCP2_CMD_PROCESS_MSG,
	HDCP2_CMD_TIMEOUT,
	HDCP2_CMD_EN_ENCRYPTION,
	HDCP2_CMD_QUERY_STREAM,
};

struct hdcp2_buffer {
	unsigned char *data;
	u32 length;
};

struct hdcp2_app_data {
	u32 timeout;
	bool repeater_flag;
	struct hdcp2_buffer request;	// requests to TA, sent from sink
	struct hdcp2_buffer response;	// responses from TA, sent to sink
};

struct hdcp1_topology {
	uint32_t depth;
	uint32_t device_count;
	uint32_t max_devices_exceeded;
	uint32_t max_cascade_exceeded;
	uint32_t hdcp2LegacyDeviceDownstream;
	uint32_t hdcp1DeviceDownstream;
};

static inline const char *hdcp2_app_cmd_str(enum hdcp2_app_cmd cmd)
{
	switch (cmd) {
	case HDCP2_CMD_START:
		return HDCP_QSEECOM_ENUM_STR(HDCP2_CMD_START);
	case HDCP2_CMD_START_AUTH:
		return HDCP_QSEECOM_ENUM_STR(HDCP2_CMD_START_AUTH);
	case HDCP2_CMD_STOP:
		return HDCP_QSEECOM_ENUM_STR(HDCP2_CMD_STOP);
	case HDCP2_CMD_PROCESS_MSG:
		return HDCP_QSEECOM_ENUM_STR(HDCP2_CMD_PROCESS_MSG);
	case HDCP2_CMD_TIMEOUT:
		return HDCP_QSEECOM_ENUM_STR(HDCP2_CMD_TIMEOUT);
	case HDCP2_CMD_EN_ENCRYPTION:
		return HDCP_QSEECOM_ENUM_STR(HDCP2_CMD_EN_ENCRYPTION);
	case HDCP2_CMD_QUERY_STREAM:
		return HDCP_QSEECOM_ENUM_STR(HDCP2_CMD_QUERY_STREAM);
	default:			return "???";
	}
}

#if IS_ENABLED(CONFIG_HDCP_QSEECOM)
void *hdcp1_init(void);
void hdcp1_deinit(void *data);
bool hdcp1_feature_supported(void *data);
int hdcp1_start(void *data, u32 *aksv_msb, u32 *aksv_lsb);
int hdcp1_set_enc(void *data, bool enable);
int hdcp1_ops_notify(void *data, void *topology, bool is_authenticated);
void hdcp1_stop(void *data);

void *hdcp2_init(u32 device_type);
void hdcp2_deinit(void *ctx);
bool hdcp2_feature_supported(void *ctx);
int hdcp2_app_comm(void *ctx, enum hdcp2_app_cmd cmd,
		struct hdcp2_app_data *app_data);
int hdcp2_open_stream(void *ctx, uint8_t vc_payload_id,
		uint8_t stream_number, uint32_t *stream_id);
int hdcp2_close_stream(void *ctx, uint32_t stream_id);
int hdcp2_force_encryption(void *ctx, uint32_t enable);
void hdcp1_set_hdcp_key_verify_retries(void *ctx, u32 max_hdcp_key_verify_retries);
void hdcp2_set_hdcp_key_verify_retries(void *ctx, u32 max_hdcp_key_verify_retries);
#else
static inline void *hdcp1_init(void)
{
	return NULL;
}

static inline void hdcp1_deinit(void *data)
{
}

static inline bool hdcp1_feature_supported(void *data)
{
	return false;
}

static inline int hdcp1_start(void *data, u32 *aksv_msb, u32 *aksv_lsb)
{
	return 0;
}

static inline int hdcp1_ops_notify(void *data, void *topology, bool is_authenticated)
{
	return 0;
}

static inline int hdcp1_set_enc(void *data, bool enable)
{
	return 0;
}

static inline void hdcp1_stop(void *data)
{
}

static inline void *hdcp2_init(u32 device_type)
{
	return NULL;
}

static inline void hdcp2_deinit(void *ctx)
{
}

static inline bool hdcp2_feature_supported(void *ctx)
{
	return false;
}

static inline int hdcp2_app_comm(void *ctx, enum hdcp2_app_cmd cmd,
		struct hdcp2_app_data *app_data)
{
	return 0;
}

static inline int hdcp2_open_stream(void *ctx, uint8_t vc_payload_id,
		uint8_t stream_number, uint32_t *stream_id)
{
	return 0;
}

static inline int hdcp2_close_stream(void *ctx, uint32_t stream_id)
{
	return 0;
}

static inline int hdcp2_force_encryption(void *ctx, uint32_t enable)
{
	return 0;
}
static inline void hdcp1_set_hdcp_key_verify_retries(void *ctx, u32 max_hdcp_key_verify_retries)
{
}
static inline void hdcp2_set_hdcp_key_verify_retries(void *ctx, u32 max_hdcp_key_verify_retries)
{
}
#endif /* CONFIG_HDCP_QSEECOM */

#endif /* __HDCP_QSEECOM_H */