1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2008-2010 Atheros Communications Inc.
5 * Copyright (c) 2010-2011 Adrian Chadd, Xenion Pty Ltd.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
15 *
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
26 * SUCH DAMAGE.
27 */
28 #include "opt_ah.h"
29
30 #include "ah.h"
31 #include "ah_internal.h"
32 #include "ah_devid.h"
33 #include "ah_eeprom_v4k.h"
34
35 #include "ar9002/ar9280.h"
36 #include "ar9002/ar9285.h"
37 #include "ar5416/ar5416reg.h"
38 #include "ar5416/ar5416phy.h"
39 #include "ar9002/ar9285phy.h"
40 #include "ar9002/ar9285_phy.h"
41
42 void
ar9285_antdiv_comb_conf_get(struct ath_hal * ah,HAL_ANT_COMB_CONFIG * antconf)43 ar9285_antdiv_comb_conf_get(struct ath_hal *ah, HAL_ANT_COMB_CONFIG *antconf)
44 {
45 uint32_t regval;
46
47 regval = OS_REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
48 antconf->main_lna_conf = (regval & AR_PHY_9285_ANT_DIV_MAIN_LNACONF) >>
49 AR_PHY_9285_ANT_DIV_MAIN_LNACONF_S;
50 antconf->alt_lna_conf = (regval & AR_PHY_9285_ANT_DIV_ALT_LNACONF) >>
51 AR_PHY_9285_ANT_DIV_ALT_LNACONF_S;
52 antconf->fast_div_bias = (regval & AR_PHY_9285_FAST_DIV_BIAS) >>
53 AR_PHY_9285_FAST_DIV_BIAS_S;
54 antconf->antdiv_configgroup = DEFAULT_ANTDIV_CONFIG_GROUP;
55 }
56
57 void
ar9285_antdiv_comb_conf_set(struct ath_hal * ah,HAL_ANT_COMB_CONFIG * antconf)58 ar9285_antdiv_comb_conf_set(struct ath_hal *ah, HAL_ANT_COMB_CONFIG *antconf)
59 {
60 uint32_t regval;
61
62 regval = OS_REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
63 regval &= ~(AR_PHY_9285_ANT_DIV_MAIN_LNACONF |
64 AR_PHY_9285_ANT_DIV_ALT_LNACONF |
65 AR_PHY_9285_FAST_DIV_BIAS);
66 regval |= ((antconf->main_lna_conf << AR_PHY_9285_ANT_DIV_MAIN_LNACONF_S)
67 & AR_PHY_9285_ANT_DIV_MAIN_LNACONF);
68 regval |= ((antconf->alt_lna_conf << AR_PHY_9285_ANT_DIV_ALT_LNACONF_S)
69 & AR_PHY_9285_ANT_DIV_ALT_LNACONF);
70 regval |= ((antconf->fast_div_bias << AR_PHY_9285_FAST_DIV_BIAS_S)
71 & AR_PHY_9285_FAST_DIV_BIAS);
72
73 OS_REG_WRITE(ah, AR_PHY_MULTICHAIN_GAIN_CTL, regval);
74 }
75
76 /*
77 * Check whether combined + fast antenna diversity should be enabled.
78 *
79 * This enables software-driven RX antenna diversity based on RX
80 * RSSI + antenna config packet sampling.
81 */
82 HAL_BOOL
ar9285_check_div_comb(struct ath_hal * ah)83 ar9285_check_div_comb(struct ath_hal *ah)
84 {
85 uint8_t ant_div_ctl1;
86 HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
87 const MODAL_EEP4K_HEADER *pModal = &ee->ee_base.modalHeader;
88
89 #if 0
90 /* For now, simply disable this until it's better debugged. -adrian */
91 return AH_FALSE;
92 #endif
93
94 if (! AR_SREV_KITE(ah))
95 return AH_FALSE;
96
97 if (pModal->version < 3)
98 return AH_FALSE;
99
100 ant_div_ctl1 = pModal->antdiv_ctl1;
101 if ((ant_div_ctl1 & 0x1) && ((ant_div_ctl1 >> 3) & 0x1))
102 return AH_TRUE;
103
104 return AH_FALSE;
105 }
106