/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2013 Adrian Chadd <adrian@FreeBSD.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *    redistribution must be conditioned upon including a substantially
 *    similar Disclaimer requirement for further binary redistribution.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGES.
 */
#ifndef __IF_ATH_LNA_DIV_H__
#define __IF_ATH_LNA_DIV_H__

#define ATH_ANT_RX_CURRENT_SHIFT                4
#define ATH_ANT_RX_MAIN_SHIFT                   2
#define ATH_ANT_RX_MASK                         0x3

#define ATH_ANT_DIV_COMB_SHORT_SCAN_INTR        50
#define ATH_ANT_DIV_COMB_SHORT_SCAN_PKTCOUNT    0x100
#define ATH_ANT_DIV_COMB_MAX_PKTCOUNT           0x200
#define ATH_ANT_DIV_COMB_INIT_COUNT             95
#define ATH_ANT_DIV_COMB_MAX_COUNT              100
#define ATH_ANT_DIV_COMB_ALT_ANT_RATIO          30
#define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2         20

#define ATH_ANT_DIV_COMB_LNA1_LNA2_SWITCH_DELTA -1
#define ATH_ANT_DIV_COMB_LNA1_DELTA_HI          -4
#define ATH_ANT_DIV_COMB_LNA1_DELTA_MID         -2
#define ATH_ANT_DIV_COMB_LNA1_DELTA_LOW         2

struct if_ath_ant_comb_state {
        uint16_t count;
        uint16_t total_pkt_count;
        HAL_BOOL scan;
        HAL_BOOL scan_not_start;
        int main_total_rssi;
        int alt_total_rssi;
        int alt_recv_cnt;
        int main_recv_cnt;
        int rssi_lna1;
        int rssi_lna2;
        int rssi_add;
        int rssi_sub;
        int rssi_first;
        int rssi_second;
        int rssi_third;
        HAL_BOOL alt_good;
        int quick_scan_cnt;
        int main_conf;
        HAL_ANT_DIV_COMB_LNA_CONF first_quick_scan_conf;
        HAL_ANT_DIV_COMB_LNA_CONF second_quick_scan_conf;
        int first_bias;
        int second_bias;
        HAL_BOOL first_ratio;
        HAL_BOOL second_ratio;
        unsigned long scan_start_time;
        int lna1_lna2_delta;
};

extern  int ath_lna_div_attach(struct ath_softc *sc);
extern  int ath_lna_div_detach(struct ath_softc *sc);
extern  int ath_lna_div_ioctl(struct ath_softc *sc, struct ath_diag *ad);
extern  int ath_lna_div_enable(struct ath_softc *sc,
            const struct ieee80211_channel *ch);

extern  void ath_lna_rx_comb_scan(struct ath_softc *sc,
            struct ath_rx_status *rs, unsigned long ticks, int hz);

#endif  /* __IF_ATH_LNA_DIV_H__ */