ar9285_btcoex.c

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    1 /*-
    2  * SPDX-License-Identifier: ISC
    3  *
    4  * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
    5  * Copyright (c) 2002-2005 Atheros Communications, Inc.
    6  * Copyright (c) 2008-2010, Atheros Communications Inc.
    7  *
    8  * Permission to use, copy, modify, and/or distribute this software for any
    9  * purpose with or without fee is hereby granted, provided that the above
   10  * copyright notice and this permission notice appear in all copies.
   11  *
   12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   19  *
   20  * $FreeBSD$
   21  */
   22 
   23 #include "opt_ah.h"
   24 
   25 #include "ah.h"
   26 #include "ah_internal.h"
   27 #include "ah_devid.h"
   28 #ifdef AH_DEBUG
   29 #include "ah_desc.h"                /* NB: for HAL_PHYERR* */
   30 #endif
   31 
   32 #include "ar5416/ar5416.h"
   33 #include "ar5416/ar5416reg.h"
   34 #include "ar5416/ar5416phy.h"
   35 #include "ar5416/ar5416desc.h" /* AR5416_CONTTXMODE */
   36 
   37 #include "ar9002/ar9285phy.h"
   38 #include "ar9002/ar9285.h"
   39 
   40 /*
   41  * This is specific to Kite.
   42  *
   43  * Kiwi and others don't have antenna diversity like this.
   44  */
   45 void
   46 ar9285BTCoexAntennaDiversity(struct ath_hal *ah)
   47 {
   48         struct ath_hal_5416 *ahp = AH5416(ah);
   49         u_int32_t regVal;
   50         u_int8_t ant_div_control1, ant_div_control2;
   51 
   52         HALDEBUG(ah, HAL_DEBUG_BT_COEX,
   53             "%s: btCoexFlag: ALLOW=%d, ENABLE=%d\n",
   54             __func__,
   55             !! (ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ALLOW),
   56             !! (ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ENABLE));
   57 
   58         if ((ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ALLOW) ||
   59             (AH5212(ah)->ah_diversity != HAL_ANT_VARIABLE)) {
   60         if ((ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ENABLE) &&
   61              (AH5212(ah)->ah_antControl == HAL_ANT_VARIABLE)) {
   62                 /* Enable antenna diversity */
   63                 ant_div_control1 = HAL_BT_COEX_ANTDIV_CONTROL1_ENABLE;
   64                 ant_div_control2 = HAL_BT_COEX_ANTDIV_CONTROL2_ENABLE;
   65 
   66                 /* Don't disable BT ant to allow BB to control SWCOM */
   67                 ahp->ah_btCoexMode2 &= (~(AR_BT_DISABLE_BT_ANT));
   68                 OS_REG_WRITE(ah, AR_BT_COEX_MODE2, ahp->ah_btCoexMode2);
   69 
   70                 /* Program the correct SWCOM table */
   71                 OS_REG_WRITE(ah, AR_PHY_SWITCH_COM,
   72                     HAL_BT_COEX_ANT_DIV_SWITCH_COM);
   73                 OS_REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0, 0xf0000000);
   74         } else if (AH5212(ah)->ah_antControl == HAL_ANT_FIXED_B) {
   75                 /* Disable antenna diversity. Use antenna B(LNA2) only. */
   76                 ant_div_control1 = HAL_BT_COEX_ANTDIV_CONTROL1_FIXED_B;
   77                 ant_div_control2 = HAL_BT_COEX_ANTDIV_CONTROL2_FIXED_B;
   78 
   79                 /* Disable BT ant to allow concurrent BT and WLAN receive */
   80                 ahp->ah_btCoexMode2 |= AR_BT_DISABLE_BT_ANT;
   81                 OS_REG_WRITE(ah, AR_BT_COEX_MODE2, ahp->ah_btCoexMode2);
   82 
   83                 /*
   84                  * Program SWCOM table to make sure RF switch always parks
   85                  * at WLAN side
   86                  */
   87                 OS_REG_WRITE(ah, AR_PHY_SWITCH_COM,
   88                     HAL_BT_COEX_ANT_DIV_SWITCH_COM);
   89                 OS_REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0x60000000, 0xf0000000);
   90         } else {
   91                 /* Disable antenna diversity. Use antenna A(LNA1) only */
   92                 ant_div_control1 = HAL_BT_COEX_ANTDIV_CONTROL1_FIXED_A;
   93                 ant_div_control2 = HAL_BT_COEX_ANTDIV_CONTROL2_FIXED_A;
   94 
   95                 /* Disable BT ant to allow concurrent BT and WLAN receive */
   96                 ahp->ah_btCoexMode2 |= AR_BT_DISABLE_BT_ANT;
   97                 OS_REG_WRITE(ah, AR_BT_COEX_MODE2, ahp->ah_btCoexMode2);
   98 
   99                 /*
  100                  * Program SWCOM table to make sure RF switch always
  101                  * parks at BT side
  102                  */
  103                 OS_REG_WRITE(ah, AR_PHY_SWITCH_COM, 0);
  104                 OS_REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0, 0xf0000000);
  105         }
  106 
  107         regVal = OS_REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
  108         regVal &= (~(AR_PHY_9285_ANT_DIV_CTL_ALL));
  109         /*
  110          * Clear ant_fast_div_bias [14:9] since for Janus the main LNA is
  111          * always LNA1.
  112          */
  113         regVal &= (~(AR_PHY_9285_FAST_DIV_BIAS));
  114 
  115         regVal |= SM(ant_div_control1, AR_PHY_9285_ANT_DIV_CTL);
  116         regVal |= SM(ant_div_control2, AR_PHY_9285_ANT_DIV_ALT_LNACONF);
  117         regVal |= SM((ant_div_control2 >> 2), AR_PHY_9285_ANT_DIV_MAIN_LNACONF);
  118         regVal |= SM((ant_div_control1 >> 1), AR_PHY_9285_ANT_DIV_ALT_GAINTB);
  119         regVal |= SM((ant_div_control1 >> 2), AR_PHY_9285_ANT_DIV_MAIN_GAINTB);
  120         OS_REG_WRITE(ah, AR_PHY_MULTICHAIN_GAIN_CTL, regVal);
  121 
  122         regVal = OS_REG_READ(ah, AR_PHY_CCK_DETECT);
  123         regVal &= (~AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
  124         regVal |= SM((ant_div_control1 >> 3),
  125             AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
  126         OS_REG_WRITE(ah, AR_PHY_CCK_DETECT, regVal);
  127     }
  128 }
  129 
  130 void
  131 ar9285BTCoexSetParameter(struct ath_hal *ah, u_int32_t type, u_int32_t value)
  132 {
  133         struct ath_hal_5416 *ahp = AH5416(ah);
  134 
  135         switch (type) {
  136         case HAL_BT_COEX_ANTENNA_DIVERSITY:
  137                 if (AR_SREV_KITE(ah)) {
  138                         ahp->ah_btCoexFlag |= HAL_BT_COEX_FLAG_ANT_DIV_ALLOW;
  139                         if (value)
  140                                 ahp->ah_btCoexFlag |=
  141                                     HAL_BT_COEX_FLAG_ANT_DIV_ENABLE;
  142                         else
  143                                 ahp->ah_btCoexFlag &=
  144                                     ~HAL_BT_COEX_FLAG_ANT_DIV_ENABLE;
  145                         ar9285BTCoexAntennaDiversity(ah);
  146                 }
  147                 break;
  148         default:
  149                 ar5416BTCoexSetParameter(ah, type, value);
  150                 break;
  151         }
  152 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/ath/ath_hal/ar9002/ar9285_btcoex.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/ath/ath_hal/ar9002/ar9285_btcoex.c