ar9287_cal.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2008-2010 Atheros Communications Inc.
5 * Copyright (c) 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 * $FreeBSD: stable/11/sys/dev/ath/ath_hal/ar9002/ar9287_cal.c 330897 2018-03-14 03:19:51Z eadler $
29 */
30#include "opt_ah.h"
31#include "ah.h"
32#include "ah_internal.h"
33
34#include "ah_eeprom_v4k.h"
35
36#include "ar9002/ar9285.h"
37#include "ar5416/ar5416reg.h"
38#include "ar5416/ar5416phy.h"
39#include "ar9002/ar9002phy.h"
40//#include "ar9002/ar9287phy.h"
41
42#include "ar9002/ar9287_cal.h"
43
44
45void
46ar9287PACal(struct ath_hal *ah, HAL_BOOL is_reset)
47{
48	/* XXX not required */
49}
50
51/*
52 * This is like Merlin but without ADC disable
53 */
54HAL_BOOL
55ar9287InitCalHardware(struct ath_hal *ah, const struct ieee80211_channel *chan)
56{
57	OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_FLTR_CAL);
58
59	/* Calibrate the AGC */
60	OS_REG_WRITE(ah, AR_PHY_AGC_CONTROL,
61	    OS_REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_CAL);
62
63	/* Poll for offset calibration complete */
64	if (!ath_hal_wait(ah, AR_PHY_AGC_CONTROL,
65	    AR_PHY_AGC_CONTROL_CAL, 0)) {
66		HALDEBUG(ah, HAL_DEBUG_RESET,
67		    "%s: offset calibration failed to complete in 1ms; "
68		    "noisy environment?\n", __func__);
69		return AH_FALSE;
70	}
71
72	OS_REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_FLTR_CAL);
73
74	return AH_TRUE;
75}
76