/*
 * Copyright (c) 2019 Brett Witherspoon
 * Copyright (c) 2020 Friedt Professional Engineering Services, Inc
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#ifndef ZEPHYR_DRIVERS_IEEE802154_IEEE802154_CC13XX_CC26XX_SUBG_H_
#define ZEPHYR_DRIVERS_IEEE802154_IEEE802154_CC13XX_CC26XX_SUBG_H_

#include <zephyr/kernel.h>
#include <zephyr/net/net_if.h>

#include <ti/drivers/rf/RF.h>

#include <driverlib/rf_common_cmd.h>
#include <driverlib/rf_data_entry.h>
#include <driverlib/rf_ieee_cmd.h>
#include <driverlib/rf_prop_cmd.h>
#include <driverlib/rf_mailbox.h>

/* See IEEE 802.15.4-2015 20.2.2 */
#define IEEE802154_SUN_PHY_FSK_PHR_LEN 2

/* IEEE 802.15.4-2015 915 MHz 2FSK PHY symbol rate (20.6.3) */
#define IEEE802154_SUN_PHY_2FSK_200K_SYMBOLS_PER_SECOND 200000

/* IEEE 802.15.4-2006 PHY constants (6.4.1) */
#define IEEE802154_MAX_PHY_PACKET_SIZE 127
#define IEEE802154_TURNAROUND_TIME 12

/* IEEE 802.15.4-2006 PHY PIB attributes (6.4.2) */
#define IEEE802154_PHY_CCA_MODE 1
#define IEEE802154_PHY_SHR_DURATION 2
#define IEEE802154_PHY_SYMBOLS_PER_OCTET 8

/* IEEE 802.15.4-2006 MAC constants (7.4.1) */
#define IEEE802154_UNIT_BACKOFF_PERIOD 20

/* ACK is 2 bytes for PHY header + 2 bytes MAC header + 2 bytes MAC footer */
#define IEEE802154_ACK_FRAME_OCTETS 6

/* IEEE 802.15.4-2006 MAC PIB attributes (7.4.2)
 *
 * The macAckWaitDuration attribute does not include aUnitBackoffPeriod for
 * non-beacon enabled PANs (See IEEE 802.15.4-2006 7.5.6.4.2)
 */
#define IEEE802154_MAC_ACK_WAIT_DURATION			    \
	(IEEE802154_TURNAROUND_TIME + IEEE802154_PHY_SHR_DURATION + \
	 IEEE802154_ACK_FRAME_OCTETS * IEEE802154_PHY_SYMBOLS_PER_OCTET)

/* Reserve two bytes for 16-bit CRC */
#define IEEE802154_MTU (IEEE802154_MAX_PHY_PACKET_SIZE - 2)

#define CC13XX_CC26XX_RAT_CYCLES_PER_SECOND 4000000

#define CC13XX_CC26XX_NUM_RX_BUF \
	CONFIG_IEEE802154_CC13XX_CC26XX_SUB_GHZ_NUM_RX_BUF

/* Three additional bytes for length, RSSI and status values from CPE */
#define CC13XX_CC26XX_RX_BUF_SIZE (IEEE802154_MAX_PHY_PACKET_SIZE + 3)

/*
 * Two additional bytes for the SUN FSK PHY HDR
 * (See IEEE 802.15.4-2015 20.2.2)
 */
#define CC13XX_CC26XX_TX_BUF_SIZE \
	(IEEE802154_MAX_PHY_PACKET_SIZE + IEEE802154_SUN_PHY_FSK_PHR_LEN)

#define CC13XX_CC26XX_RECEIVER_SENSITIVITY -100
#define CC13XX_CC26XX_RSSI_DYNAMIC_RANGE 95

struct ieee802154_cc13xx_cc26xx_subg_data {
	RF_Handle rf_handle;
	RF_Object rf_object;

	struct net_if *iface;
	uint8_t mac[8];

	struct k_mutex tx_mutex;

	dataQueue_t rx_queue;
	rfc_dataEntryPointer_t rx_entry[CC13XX_CC26XX_NUM_RX_BUF];
	uint8_t rx_data[CC13XX_CC26XX_NUM_RX_BUF][CC13XX_CC26XX_RX_BUF_SIZE];
	uint8_t tx_data[CC13XX_CC26XX_TX_BUF_SIZE];

	/* Common Radio Commands */
	volatile rfc_CMD_CLEAR_RX_t cmd_clear_rx;
	volatile rfc_CMD_SET_TX_POWER_t cmd_set_tx_power;
	volatile rfc_CMD_FS_t cmd_fs;

	/* Sub-GHz Radio Commands */
	volatile rfc_CMD_PROP_RADIO_DIV_SETUP_t cmd_prop_radio_div_setup;
	volatile rfc_CMD_PROP_RX_ADV_t cmd_prop_rx_adv;
	volatile rfc_CMD_PROP_TX_ADV_t cmd_prop_tx_adv;
	volatile rfc_propRxOutput_t cmd_prop_rx_adv_output;
	volatile rfc_CMD_PROP_CS_t cmd_prop_cs;
};

#endif /* ZEPHYR_DRIVERS_IEEE802154_IEEE802154_CC13XX_CC26XX_SUBG_H_ */