drivers/staging/rt3090/common/eeprom.c

   1 /*
   2  *************************************************************************
   3  * Ralink Tech Inc.
   4  * 5F., No.36, Taiyuan St., Jhubei City,
   5  * Hsinchu County 302,
   6  * Taiwan, R.O.C.
   7  *
   8  * (c) Copyright 2002-2007, Ralink Technology, Inc.
   9  *
  10  * This program is free software; you can redistribute it and/or modify  *
  11  * it under the terms of the GNU General Public License as published by  *
  12  * the Free Software Foundation; either version 2 of the License, or     *
  13  * (at your option) any later version.                                   *
  14  *                                                                       *
  15  * This program is distributed in the hope that it will be useful,       *
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  18  * GNU General Public License for more details.                          *
  19  *                                                                       *
  20  * You should have received a copy of the GNU General Public License     *
  21  * along with this program; if not, write to the                         *
  22  * Free Software Foundation, Inc.,                                       *
  23  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  24  *                                                                       *
  25  *************************************************************************
  26
  27         Module Name:
  28         eeprom.c
  29
  30         Abstract:
  31
  32         Revision History:
  33         Who                     When                    What
  34         --------        ----------              ----------------------------------------------
  35         Name            Date                    Modification logs
  36 */
  37
  38 #include "../rt_config.h"
  39
  40
  41 INT RtmpChipOpsEepromHook(
  42         IN RTMP_ADAPTER *pAd,
  43         IN INT                  infType)
  44 {
  45         RTMP_CHIP_OP    *pChipOps = &pAd->chipOps;
  46 #ifdef RT30xx
  47 #ifdef RTMP_EFUSE_SUPPORT
  48         UINT32                  eFuseCtrl, MacCsr0;
  49         int index;
  50
  51         index = 0;
  52         do
  53         {
  54                 RTMP_IO_READ32(pAd, MAC_CSR0, &MacCsr0);
  55                 pAd->MACVersion = MacCsr0;
  56
  57                 if ((pAd->MACVersion != 0x00) && (pAd->MACVersion != 0xFFFFFFFF))
  58                         break;
  59
  60                 RTMPusecDelay(10);
  61         } while (index++ < 100);
  62
  63         pAd->bUseEfuse=FALSE;
  64         RTMP_IO_READ32(pAd, EFUSE_CTRL, &eFuseCtrl);
  65         pAd->bUseEfuse = ( (eFuseCtrl & 0x80000000) == 0x80000000) ? 1 : 0;
  66         if(pAd->bUseEfuse)
  67         {
  68                 pChipOps->eeinit = eFuse_init;
  69                 pChipOps->eeread = rtmp_ee_efuse_read16;
  70                 pChipOps->eewrite = rtmp_ee_efuse_write16;
  71                 return 0 ;
  72         }
  73         else
  74         {
  75                 pAd->bFroceEEPROMBuffer = FALSE;
  76                 DBGPRINT(RT_DEBUG_TRACE, ("NVM is EEPROM\n"));
  77         }
  78 #endif // RTMP_EFUSE_SUPPORT //
  79 #endif // RT30xx //
  80
  81         switch(infType)
  82         {
  83 #ifdef RTMP_PCI_SUPPORT
  84                 case RTMP_DEV_INF_PCI:
  85                         pChipOps->eeinit = NULL;
  86                         pChipOps->eeread = rtmp_ee_prom_read16;
  87                         pChipOps->eewrite = rtmp_ee_prom_write16;
  88                         break;
  89 #endif // RTMP_PCI_SUPPORT //
  90
  91
  92                 default:
  93                         DBGPRINT(RT_DEBUG_ERROR, ("RtmpChipOpsEepromHook() failed!\n"));
  94                         break;
  95         }
  96
  97         return 0;
  98 }