1/*
2 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
3 * Copyright (c) 2002-2005 Atheros Communications, Inc.
4 * Copyright (c) 2008-2010, Atheros Communications Inc.
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 *
18 * $FreeBSD$
19 */
20
21#include "opt_ah.h"
22
23#include "ah.h"
24#include "ah_internal.h"
25#include "ah_devid.h"
26#ifdef AH_DEBUG
27#include "ah_desc.h"		    /* NB: for HAL_PHYERR* */
28#endif
29
30#include "ar5416/ar5416.h"
31#include "ar5416/ar5416reg.h"
32#include "ar5416/ar5416phy.h"
33#include "ar5416/ar5416desc.h" /* AR5416_CONTTXMODE */
34
35#include "ar9002/ar9285phy.h"
36#include "ar9002/ar9285.h"
37
38/*
39 * This is specific to Kite.
40 *
41 * Kiwi and others don't have antenna diversity like this.
42 */
43void
44ar9285BTCoexAntennaDiversity(struct ath_hal *ah)
45{
46	struct ath_hal_5416 *ahp = AH5416(ah);
47	u_int32_t regVal;
48	u_int8_t ant_div_control1, ant_div_control2;
49
50	HALDEBUG(ah, HAL_DEBUG_BT_COEX,
51	    "%s: btCoexFlag: ALLOW=%d, ENABLE=%d\n",
52	    __func__,
53	    !! (ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ALLOW),
54	    !! (ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ENABLE));
55
56	if ((ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ALLOW) ||
57	    (AH5212(ah)->ah_diversity != HAL_ANT_VARIABLE)) {
58	if ((ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ENABLE) &&
59	     (AH5212(ah)->ah_antControl == HAL_ANT_VARIABLE)) {
60		/* Enable antenna diversity */
61		ant_div_control1 = HAL_BT_COEX_ANTDIV_CONTROL1_ENABLE;
62		ant_div_control2 = HAL_BT_COEX_ANTDIV_CONTROL2_ENABLE;
63
64		/* Don't disable BT ant to allow BB to control SWCOM */
65		ahp->ah_btCoexMode2 &= (~(AR_BT_DISABLE_BT_ANT));
66		OS_REG_WRITE(ah, AR_BT_COEX_MODE2, ahp->ah_btCoexMode2);
67
68		/* Program the correct SWCOM table */
69		OS_REG_WRITE(ah, AR_PHY_SWITCH_COM,
70		    HAL_BT_COEX_ANT_DIV_SWITCH_COM);
71		OS_REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0, 0xf0000000);
72	} else if (AH5212(ah)->ah_antControl == HAL_ANT_FIXED_B) {
73		/* Disable antenna diversity. Use antenna B(LNA2) only. */
74		ant_div_control1 = HAL_BT_COEX_ANTDIV_CONTROL1_FIXED_B;
75		ant_div_control2 = HAL_BT_COEX_ANTDIV_CONTROL2_FIXED_B;
76
77		/* Disable BT ant to allow concurrent BT and WLAN receive */
78		ahp->ah_btCoexMode2 |= AR_BT_DISABLE_BT_ANT;
79		OS_REG_WRITE(ah, AR_BT_COEX_MODE2, ahp->ah_btCoexMode2);
80
81		/*
82		 * Program SWCOM table to make sure RF switch always parks
83		 * at WLAN side
84		 */
85		OS_REG_WRITE(ah, AR_PHY_SWITCH_COM,
86		    HAL_BT_COEX_ANT_DIV_SWITCH_COM);
87		OS_REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0x60000000, 0xf0000000);
88	} else {
89		/* Disable antenna diversity. Use antenna A(LNA1) only */
90		ant_div_control1 = HAL_BT_COEX_ANTDIV_CONTROL1_FIXED_A;
91		ant_div_control2 = HAL_BT_COEX_ANTDIV_CONTROL2_FIXED_A;
92
93		/* Disable BT ant to allow concurrent BT and WLAN receive */
94		ahp->ah_btCoexMode2 |= AR_BT_DISABLE_BT_ANT;
95		OS_REG_WRITE(ah, AR_BT_COEX_MODE2, ahp->ah_btCoexMode2);
96
97		/*
98		 * Program SWCOM table to make sure RF switch always
99		 * parks at BT side
100		 */
101		OS_REG_WRITE(ah, AR_PHY_SWITCH_COM, 0);
102		OS_REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0, 0xf0000000);
103	}
104
105	regVal = OS_REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
106	regVal &= (~(AR_PHY_9285_ANT_DIV_CTL_ALL));
107	/*
108	 * Clear ant_fast_div_bias [14:9] since for Janus the main LNA is
109	 * always LNA1.
110	 */
111	regVal &= (~(AR_PHY_9285_FAST_DIV_BIAS));
112
113	regVal |= SM(ant_div_control1, AR_PHY_9285_ANT_DIV_CTL);
114	regVal |= SM(ant_div_control2, AR_PHY_9285_ANT_DIV_ALT_LNACONF);
115	regVal |= SM((ant_div_control2 >> 2), AR_PHY_9285_ANT_DIV_MAIN_LNACONF);
116	regVal |= SM((ant_div_control1 >> 1), AR_PHY_9285_ANT_DIV_ALT_GAINTB);
117	regVal |= SM((ant_div_control1 >> 2), AR_PHY_9285_ANT_DIV_MAIN_GAINTB);
118	OS_REG_WRITE(ah, AR_PHY_MULTICHAIN_GAIN_CTL, regVal);
119
120	regVal = OS_REG_READ(ah, AR_PHY_CCK_DETECT);
121	regVal &= (~AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
122	regVal |= SM((ant_div_control1 >> 3),
123	    AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
124	OS_REG_WRITE(ah, AR_PHY_CCK_DETECT, regVal);
125    }
126}
127
128void
129ar9285BTCoexSetParameter(struct ath_hal *ah, u_int32_t type, u_int32_t value)
130{
131	struct ath_hal_5416 *ahp = AH5416(ah);
132
133	switch (type) {
134	case HAL_BT_COEX_ANTENNA_DIVERSITY:
135		if (AR_SREV_KITE(ah)) {
136			ahp->ah_btCoexFlag |= HAL_BT_COEX_FLAG_ANT_DIV_ALLOW;
137			if (value)
138				ahp->ah_btCoexFlag |=
139				    HAL_BT_COEX_FLAG_ANT_DIV_ENABLE;
140			else
141				ahp->ah_btCoexFlag &=
142				    ~HAL_BT_COEX_FLAG_ANT_DIV_ENABLE;
143			ar9285BTCoexAntennaDiversity(ah);
144		}
145		break;
146	default:
147		ar5416BTCoexSetParameter(ah, type, value);
148		break;
149	}
150}
151
152
153