drivers/staging/rt2860/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 #include "../rt_config.h"
  38
  39 int RtmpChipOpsEepromHook(struct rt_rtmp_adapter *pAd, int infType)
  40 {
  41         struct rt_rtmp_chip_op *pChipOps = &pAd->chipOps;
  42 #ifdef RT30xx
  43 #ifdef RTMP_EFUSE_SUPPORT
  44         u32 eFuseCtrl, MacCsr0;
  45         int index;
  46
  47         index = 0;
  48         do {
  49                 RTMP_IO_READ32(pAd, MAC_CSR0, &MacCsr0);
  50                 pAd->MACVersion = MacCsr0;
  51
  52                 if ((pAd->MACVersion != 0x00)
  53                     && (pAd->MACVersion != 0xFFFFFFFF))
  54                         break;
  55
  56                 RTMPusecDelay(10);
  57         } while (index++ < 100);
  58
  59         pAd->bUseEfuse = FALSE;
  60         RTMP_IO_READ32(pAd, EFUSE_CTRL, &eFuseCtrl);
  61         pAd->bUseEfuse = ((eFuseCtrl & 0x80000000) == 0x80000000) ? 1 : 0;
  62         if (pAd->bUseEfuse) {
  63                 pChipOps->eeinit = eFuse_init;
  64                 pChipOps->eeread = rtmp_ee_efuse_read16;
  65                 return 0;
  66         } else
  67                 DBGPRINT(RT_DEBUG_TRACE, ("NVM is EEPROM\n"));
  68 #endif /* RTMP_EFUSE_SUPPORT // */
  69 #endif /* RT30xx // */
  70
  71         switch (infType) {
  72 #ifdef RTMP_PCI_SUPPORT
  73         case RTMP_DEV_INF_PCI:
  74                 pChipOps->eeinit = NULL;
  75                 pChipOps->eeread = rtmp_ee_prom_read16;
  76                 break;
  77 #endif /* RTMP_PCI_SUPPORT // */
  78 #ifdef RTMP_USB_SUPPORT
  79         case RTMP_DEV_INF_USB:
  80                 pChipOps->eeinit = NULL;
  81                 pChipOps->eeread = RTUSBReadEEPROM16;
  82                 break;
  83 #endif /* RTMP_USB_SUPPORT // */
  84
  85         default:
  86                 DBGPRINT(RT_DEBUG_ERROR, ("RtmpChipOpsEepromHook() failed!\n"));
  87                 break;
  88         }
  89
  90         return 0;
  91 }