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      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: ar5416_eeprom.c,v 1.2 2011/05/30 13:57:21 joerg Exp $
     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  */
     34 HAL_BOOL
     35 ar5416EepromRead(struct ath_hal *ah, u_int off, uint16_t *data)
     36 {
     37         (void)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