1/*-
2 * SPDX-License-Identifier: ISC
3 *
4 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
5 * Copyright (c) 2002-2008 Atheros Communications, Inc.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 *
19 * $FreeBSD: releng/12.0/sys/dev/ath/ath_hal/ar5416/ar5416_cal_adcdc.c 326695 2017-12-08 15:57:29Z pfg $
20 */
21#include "opt_ah.h"
22
23#include "ah.h"
24#include "ah_internal.h"
25#include "ah_devid.h"
26
27#include "ar5416/ar5416.h"
28#include "ar5416/ar5416reg.h"
29#include "ar5416/ar5416phy.h"
30
31/* Adc DC Offset Cal aliases */
32#define	totalAdcDcOffsetIOddPhase(i)	caldata[0][i].s
33#define	totalAdcDcOffsetIEvenPhase(i)	caldata[1][i].s
34#define	totalAdcDcOffsetQOddPhase(i)	caldata[2][i].s
35#define	totalAdcDcOffsetQEvenPhase(i)	caldata[3][i].s
36
37void
38ar5416AdcDcCalCollect(struct ath_hal *ah)
39{
40	struct ar5416PerCal *cal = &AH5416(ah)->ah_cal;
41	int i;
42
43	for (i = 0; i < AR5416_MAX_CHAINS; i++) {
44		cal->totalAdcDcOffsetIOddPhase(i) += (int32_t)
45		    OS_REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
46		cal->totalAdcDcOffsetIEvenPhase(i) += (int32_t)
47		    OS_REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
48		cal->totalAdcDcOffsetQOddPhase(i) += (int32_t)
49		    OS_REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
50		cal->totalAdcDcOffsetQEvenPhase(i) += (int32_t)
51		    OS_REG_READ(ah, AR_PHY_CAL_MEAS_3(i));
52
53		HALDEBUG(ah, HAL_DEBUG_PERCAL,
54		    "%d: Chn %d oddi=0x%08x; eveni=0x%08x; oddq=0x%08x; evenq=0x%08x;\n",
55		   cal->calSamples, i,
56		   cal->totalAdcDcOffsetIOddPhase(i),
57		   cal->totalAdcDcOffsetIEvenPhase(i),
58		   cal->totalAdcDcOffsetQOddPhase(i),
59		   cal->totalAdcDcOffsetQEvenPhase(i));
60	}
61}
62
63void
64ar5416AdcDcCalibration(struct ath_hal *ah, uint8_t numChains)
65{
66	struct ar5416PerCal *cal = &AH5416(ah)->ah_cal;
67	const HAL_PERCAL_DATA *calData = cal->cal_curr->calData;
68	uint32_t numSamples;
69	int i;
70
71	numSamples = (1 << (calData->calCountMax + 5)) * calData->calNumSamples;
72	for (i = 0; i < numChains; i++) {
73		uint32_t iOddMeasOffset = cal->totalAdcDcOffsetIOddPhase(i);
74		uint32_t iEvenMeasOffset = cal->totalAdcDcOffsetIEvenPhase(i);
75		int32_t qOddMeasOffset = cal->totalAdcDcOffsetQOddPhase(i);
76		int32_t qEvenMeasOffset = cal->totalAdcDcOffsetQEvenPhase(i);
77		int32_t qDcMismatch, iDcMismatch;
78		uint32_t val;
79
80		HALDEBUG(ah, HAL_DEBUG_PERCAL,
81		    "Starting ADC DC Offset Cal for Chain %d\n", i);
82
83		HALDEBUG(ah, HAL_DEBUG_PERCAL, " pwr_meas_odd_i = %d\n",
84		    iOddMeasOffset);
85		HALDEBUG(ah, HAL_DEBUG_PERCAL, " pwr_meas_even_i = %d\n",
86		    iEvenMeasOffset);
87		HALDEBUG(ah, HAL_DEBUG_PERCAL, " pwr_meas_odd_q = %d\n",
88		    qOddMeasOffset);
89		HALDEBUG(ah, HAL_DEBUG_PERCAL, " pwr_meas_even_q = %d\n",
90		    qEvenMeasOffset);
91
92		HALASSERT(numSamples);
93
94		iDcMismatch = (((iEvenMeasOffset - iOddMeasOffset) * 2) /
95		    numSamples) & 0x1ff;
96		qDcMismatch = (((qOddMeasOffset - qEvenMeasOffset) * 2) /
97		    numSamples) & 0x1ff;
98		HALDEBUG(ah, HAL_DEBUG_PERCAL,
99		    " dc_offset_mismatch_i = 0x%08x\n", iDcMismatch);
100		HALDEBUG(ah, HAL_DEBUG_PERCAL,
101		    " dc_offset_mismatch_q = 0x%08x\n", qDcMismatch);
102
103		val = OS_REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i));
104		val &= 0xc0000fff;
105		val |= (qDcMismatch << 12) | (iDcMismatch << 21);
106		OS_REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i), val);
107
108		HALDEBUG(ah, HAL_DEBUG_PERCAL,
109		    "ADC DC Offset Cal done for Chain %d\n", i);
110	}
111	OS_REG_SET_BIT(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0),
112	    AR_PHY_NEW_ADC_DC_OFFSET_CORR_ENABLE);
113}
114