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 * $Id: ar5212_eeprom.c,v 1.6 2008/11/10 04:08:03 sam Exp $ 18 */ 19 #include "opt_ah.h" 20 21 #include "ah.h" 22 #include "ah_internal.h" 23 #include "ah_devid.h" 24 #ifdef AH_DEBUG 25 #include "ah_desc.h" /* NB: for HAL_PHYERR* */ 26 #endif 27 28 #include "ar5212/ar5212.h" 29 #include "ar5212/ar5212reg.h" 30 #include "ar5212/ar5212phy.h" 31 32 /* 33 * Read 16 bits of data from offset into *data 34 */ 35 HAL_BOOL 36 ar5212EepromRead(struct ath_hal *ah, u_int off, uint16_t *data) 37 { 38 OS_REG_WRITE(ah, AR_EEPROM_ADDR, off); 39 OS_REG_WRITE(ah, AR_EEPROM_CMD, AR_EEPROM_CMD_READ); 40 41 if (!ath_hal_wait(ah, AR_EEPROM_STS, 42 AR_EEPROM_STS_READ_COMPLETE | AR_EEPROM_STS_READ_ERROR, 43 AR_EEPROM_STS_READ_COMPLETE)) { 44 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: read failed for entry 0x%x\n", 45 __func__, off); 46 return AH_FALSE; 47 } 48 *data = OS_REG_READ(ah, AR_EEPROM_DATA) & 0xffff; 49 return AH_TRUE; 50 } 51