| 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 1.1.1.1 2008/12/11 04:46:40 alc 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 | |