ar5416_eeprom.c revision 259065
1/* 2 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting 3 * Copyright (c) 2002-2008 Atheros Communications, Inc. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 * 17 * $FreeBSD: releng/10.0/sys/dev/ath/ath_hal/ar5416/ar5416_eeprom.c 203158 2010-01-29 10:07:17Z rpaulo $ 18 */ 19#include "opt_ah.h" 20 21#include "ah.h" 22#include "ah_internal.h" 23#include "ah_devid.h" 24 25#include "ah_eeprom_v14.h" 26 27#include "ar5416/ar5416.h" 28#include "ar5416/ar5416reg.h" 29#include "ar5416/ar5416phy.h" 30 31/* 32 * Read 16 bits of data from offset into *data 33 */ 34HAL_BOOL 35ar5416EepromRead(struct ath_hal *ah, u_int off, uint16_t *data) 36{ 37 OS_REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S)); 38 if (!ath_hal_wait(ah, AR_EEPROM_STATUS_DATA, 39 AR_EEPROM_STATUS_DATA_BUSY | AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0)) 40 return AH_FALSE; 41 *data = MS(OS_REG_READ(ah, AR_EEPROM_STATUS_DATA), 42 AR_EEPROM_STATUS_DATA_VAL); 43 return AH_TRUE; 44} 45