ar5212_eeprom.c

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    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  * $FreeBSD$
   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 "ar5212/ar5212.h"
   31 #include "ar5212/ar5212reg.h"
   32 #include "ar5212/ar5212phy.h"
   33 
   34 /*
   35  * Read 16 bits of data from offset into *data
   36  */
   37 HAL_BOOL
   38 ar5212EepromRead(struct ath_hal *ah, u_int off, uint16_t *data)
   39 {
   40         OS_REG_WRITE(ah, AR_EEPROM_ADDR, off);
   41         OS_REG_WRITE(ah, AR_EEPROM_CMD, AR_EEPROM_CMD_READ);
   42 
   43         if (!ath_hal_wait(ah, AR_EEPROM_STS,
   44             AR_EEPROM_STS_READ_COMPLETE | AR_EEPROM_STS_READ_ERROR,
   45             AR_EEPROM_STS_READ_COMPLETE)) {
   46                 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: read failed for entry 0x%x\n",
   47                     __func__, off);
   48                 return AH_FALSE;
   49         }
   50         *data = OS_REG_READ(ah, AR_EEPROM_DATA) & 0xffff;
   51         return AH_TRUE;
   52 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/ath/ath_hal/ar5212/ar5212_eeprom.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/ath/ath_hal/ar5212/ar5212_eeprom.c