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 * $FreeBSD$
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 */
35HAL_BOOL
36ar5212EepromRead(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