FreeBSD/Linux Kernel Cross Reference
sys/dev/ath/ath_hal/ar9002/ar9285_phy.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2008-2010 Atheros Communications Inc.
      * Copyright (c) 2010-2011 Adrian Chadd, Xenion Pty Ltd.
      *
      * 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.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
     *
     * $FreeBSD$
     */
    #include "opt_ah.h"
    
    #include "ah.h"
    #include "ah_internal.h"
    #include "ah_devid.h"
    #include "ah_eeprom_v4k.h"
    
    #include "ar9002/ar9280.h"
    #include "ar9002/ar9285.h"
    #include "ar5416/ar5416reg.h"
    #include "ar5416/ar5416phy.h"
    #include "ar9002/ar9285phy.h"
    #include "ar9002/ar9285_phy.h"
    
    void
    ar9285_antdiv_comb_conf_get(struct ath_hal *ah, HAL_ANT_COMB_CONFIG *antconf)
    {
            uint32_t regval;
    
            regval = OS_REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
            antconf->main_lna_conf = (regval & AR_PHY_9285_ANT_DIV_MAIN_LNACONF) >>
                                      AR_PHY_9285_ANT_DIV_MAIN_LNACONF_S;
            antconf->alt_lna_conf = (regval & AR_PHY_9285_ANT_DIV_ALT_LNACONF) >>
                                     AR_PHY_9285_ANT_DIV_ALT_LNACONF_S;
            antconf->fast_div_bias = (regval & AR_PHY_9285_FAST_DIV_BIAS) >>
                                      AR_PHY_9285_FAST_DIV_BIAS_S;
            antconf->antdiv_configgroup = DEFAULT_ANTDIV_CONFIG_GROUP;
    }
    
    void
    ar9285_antdiv_comb_conf_set(struct ath_hal *ah, HAL_ANT_COMB_CONFIG *antconf)
    {
            uint32_t regval;
    
            regval = OS_REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
            regval &= ~(AR_PHY_9285_ANT_DIV_MAIN_LNACONF |
                        AR_PHY_9285_ANT_DIV_ALT_LNACONF |
                        AR_PHY_9285_FAST_DIV_BIAS);
            regval |= ((antconf->main_lna_conf << AR_PHY_9285_ANT_DIV_MAIN_LNACONF_S)
                       & AR_PHY_9285_ANT_DIV_MAIN_LNACONF);
            regval |= ((antconf->alt_lna_conf << AR_PHY_9285_ANT_DIV_ALT_LNACONF_S)
                       & AR_PHY_9285_ANT_DIV_ALT_LNACONF);
            regval |= ((antconf->fast_div_bias << AR_PHY_9285_FAST_DIV_BIAS_S)
                       & AR_PHY_9285_FAST_DIV_BIAS);
    
            OS_REG_WRITE(ah, AR_PHY_MULTICHAIN_GAIN_CTL, regval);
    }
    
    /*
     * Check whether combined + fast antenna diversity should be enabled.
     *
     * This enables software-driven RX antenna diversity based on RX
     * RSSI + antenna config packet sampling.
     */
    HAL_BOOL
    ar9285_check_div_comb(struct ath_hal *ah)
    {
            uint8_t ant_div_ctl1;
            HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
            const MODAL_EEP4K_HEADER *pModal = &ee->ee_base.modalHeader;
    
    #if 0
            /* For now, simply disable this until it's better debugged. -adrian */
            return AH_FALSE;
    #endif
    
            if (! AR_SREV_KITE(ah))
                    return AH_FALSE;
    
            if (pModal->version < 3)
                   return AH_FALSE;
   
           ant_div_ctl1 = pModal->antdiv_ctl1;
           if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1))
                   return AH_TRUE;
   
           return AH_FALSE;
   }

Cache object: 9a3ef6bee2b19b53daa594d364d036ef