2 * SPDX-License-Identifier: ISC
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.
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.
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.
26 #include "ah_internal.h"
29 #include "ah_desc.h" /* NB: for HAL_PHYERR* */
32 #include "ar5416/ar5416.h"
33 #include "ar5416/ar5416reg.h"
34 #include "ar5416/ar5416phy.h"
35 #include "ar5416/ar5416desc.h" /* AR5416_CONTTXMODE */
37 #include "ar9002/ar9285phy.h"
38 #include "ar9002/ar9285.h"
41 * This is specific to Kite.
43 * Kiwi and others don't have antenna diversity like this.
46 ar9285BTCoexAntennaDiversity(struct ath_hal *ah)
48 struct ath_hal_5416 *ahp = AH5416(ah);
50 u_int8_t ant_div_control1, ant_div_control2;
52 HALDEBUG(ah, HAL_DEBUG_BT_COEX,
53 "%s: btCoexFlag: ALLOW=%d, ENABLE=%d\n",
55 !! (ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ALLOW),
56 !! (ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ENABLE));
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;
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);
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;
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);
84 * Program SWCOM table to make sure RF switch always parks
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);
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;
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);
100 * Program SWCOM table to make sure RF switch always
103 OS_REG_WRITE(ah, AR_PHY_SWITCH_COM, 0);
104 OS_REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0, 0xf0000000);
107 regVal = OS_REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
108 regVal &= (~(AR_PHY_9285_ANT_DIV_CTL_ALL));
110 * Clear ant_fast_div_bias [14:9] since for Janus the main LNA is
113 regVal &= (~(AR_PHY_9285_FAST_DIV_BIAS));
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);
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);
131 ar9285BTCoexSetParameter(struct ath_hal *ah, u_int32_t type, u_int32_t value)
133 struct ath_hal_5416 *ahp = AH5416(ah);
136 case HAL_BT_COEX_ANTENNA_DIVERSITY:
137 if (AR_SREV_KITE(ah)) {
138 ahp->ah_btCoexFlag |= HAL_BT_COEX_FLAG_ANT_DIV_ALLOW;
140 ahp->ah_btCoexFlag |=
141 HAL_BT_COEX_FLAG_ANT_DIV_ENABLE;
143 ahp->ah_btCoexFlag &=
144 ~HAL_BT_COEX_FLAG_ANT_DIV_ENABLE;
145 ar9285BTCoexAntennaDiversity(ah);
149 ar5416BTCoexSetParameter(ah, type, value);