sys/external/isc/atheros_hal/dist/ar5416/ar5416_eeprom.c

   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 1.1.1.1 2008/12/11 04:46:48 alc 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         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 }