2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2008-2010 Atheros Communications Inc.
5 * Copyright (c) 2010-2011 Adrian Chadd, Xenion Pty Ltd.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include "ah_internal.h"
35 #include "ah_eeprom_v4k.h"
37 #include "ar9002/ar9280.h"
38 #include "ar9002/ar9285.h"
39 #include "ar5416/ar5416reg.h"
40 #include "ar5416/ar5416phy.h"
41 #include "ar9002/ar9285phy.h"
42 #include "ar9002/ar9285_phy.h"
45 ar9285_antdiv_comb_conf_get(struct ath_hal *ah, HAL_ANT_COMB_CONFIG *antconf)
49 regval = OS_REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
50 antconf->main_lna_conf = (regval & AR_PHY_9285_ANT_DIV_MAIN_LNACONF) >>
51 AR_PHY_9285_ANT_DIV_MAIN_LNACONF_S;
52 antconf->alt_lna_conf = (regval & AR_PHY_9285_ANT_DIV_ALT_LNACONF) >>
53 AR_PHY_9285_ANT_DIV_ALT_LNACONF_S;
54 antconf->fast_div_bias = (regval & AR_PHY_9285_FAST_DIV_BIAS) >>
55 AR_PHY_9285_FAST_DIV_BIAS_S;
56 antconf->antdiv_configgroup = DEFAULT_ANTDIV_CONFIG_GROUP;
60 ar9285_antdiv_comb_conf_set(struct ath_hal *ah, HAL_ANT_COMB_CONFIG *antconf)
64 regval = OS_REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
65 regval &= ~(AR_PHY_9285_ANT_DIV_MAIN_LNACONF |
66 AR_PHY_9285_ANT_DIV_ALT_LNACONF |
67 AR_PHY_9285_FAST_DIV_BIAS);
68 regval |= ((antconf->main_lna_conf << AR_PHY_9285_ANT_DIV_MAIN_LNACONF_S)
69 & AR_PHY_9285_ANT_DIV_MAIN_LNACONF);
70 regval |= ((antconf->alt_lna_conf << AR_PHY_9285_ANT_DIV_ALT_LNACONF_S)
71 & AR_PHY_9285_ANT_DIV_ALT_LNACONF);
72 regval |= ((antconf->fast_div_bias << AR_PHY_9285_FAST_DIV_BIAS_S)
73 & AR_PHY_9285_FAST_DIV_BIAS);
75 OS_REG_WRITE(ah, AR_PHY_MULTICHAIN_GAIN_CTL, regval);
79 * Check whether combined + fast antenna diversity should be enabled.
81 * This enables software-driven RX antenna diversity based on RX
82 * RSSI + antenna config packet sampling.
85 ar9285_check_div_comb(struct ath_hal *ah)
88 HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
89 const MODAL_EEP4K_HEADER *pModal = &ee->ee_base.modalHeader;
92 /* For now, simply disable this until it's better debugged. -adrian */
96 if (! AR_SREV_KITE(ah))
99 if (pModal->version < 3)
102 ant_div_ctl1 = pModal->antdiv_ctl1;
103 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1))