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: releng/12.0/sys/dev/ath/ath_hal/ar5212/ar5212_eeprom.c 326695 2017-12-08 15:57:29Z pfg $
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 */
37HAL_BOOL
38ar5212EepromRead(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}
53