FreeBSD/Linux Kernel Cross Reference
sys/dev/ath/ath_hal/ar9002/ar9287_cal.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2008-2010 Atheros Communications Inc.
      * Copyright (c) 2011 Adrian Chadd, Xenion Pty Ltd.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    #include "opt_ah.h"
    #include "ah.h"
    #include "ah_internal.h"
    
    #include "ah_eeprom_v4k.h"
    
    #include "ar9002/ar9285.h"
    #include "ar5416/ar5416reg.h"
    #include "ar5416/ar5416phy.h"
    #include "ar9002/ar9002phy.h"
    //#include "ar9002/ar9287phy.h"
    
    #include "ar9002/ar9287_cal.h"
    
    void
    ar9287PACal(struct ath_hal *ah, HAL_BOOL is_reset)
    {
            /* XXX not required */
    }
    
    /*
     * This is like Merlin but without ADC disable
     */
    HAL_BOOL
    ar9287InitCalHardware(struct ath_hal *ah, const struct ieee80211_channel *chan)
    {
            OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_FLTR_CAL);
    
            /* Calibrate the AGC */
            OS_REG_WRITE(ah, AR_PHY_AGC_CONTROL,
                OS_REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_CAL);
    
            /* Poll for offset calibration complete */
            if (!ath_hal_wait(ah, AR_PHY_AGC_CONTROL,
                AR_PHY_AGC_CONTROL_CAL, 0)) {
                    HALDEBUG(ah, HAL_DEBUG_RESET,
                        "%s: offset calibration failed to complete in 1ms; "
                        "noisy environment?\n", __func__);
                    return AH_FALSE;
            }
    
            OS_REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_FLTR_CAL);
    
            return AH_TRUE;
    }

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