diff options
Diffstat (limited to 'drivers/staging/rt2870/common/eeprom.c')
-rw-r--r-- | drivers/staging/rt2870/common/eeprom.c | 255 |
1 files changed, 1 insertions, 254 deletions
diff --git a/drivers/staging/rt2870/common/eeprom.c b/drivers/staging/rt2870/common/eeprom.c index 33f16ed..def0965 100644 --- a/drivers/staging/rt2870/common/eeprom.c +++ b/drivers/staging/rt2870/common/eeprom.c @@ -1,254 +1 @@ -/* - ************************************************************************* - * Ralink Tech Inc. - * 5F., No.36, Taiyuan St., Jhubei City, - * Hsinchu County 302, - * Taiwan, R.O.C. - * - * (c) Copyright 2002-2007, Ralink Technology, Inc. - * - * This program is free software; you can redistribute it and/or modify * - * it under the terms of the GNU General Public License as published by * - * the Free Software Foundation; either version 2 of the License, or * - * (at your option) any later version. * - * * - * This program is distributed in the hope that it will be useful, * - * but WITHOUT ANY WARRANTY; without even the implied warranty of * - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * - * GNU General Public License for more details. * - * * - * You should have received a copy of the GNU General Public License * - * along with this program; if not, write to the * - * Free Software Foundation, Inc., * - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * - * * - ************************************************************************* - - Module Name: - eeprom.c - - Abstract: - - Revision History: - Who When What - -------- ---------- ---------------------------------------------- - Name Date Modification logs -*/ -#include "../rt_config.h" - -#if 0 -#define EEPROM_SIZE 0x200 -#define NVRAM_OFFSET 0x30000 -#define RF_OFFSET 0x40000 - -static UCHAR init_flag = 0; -static PUCHAR nv_ee_start = 0; - -static UCHAR EeBuffer[EEPROM_SIZE]; -#endif -// IRQL = PASSIVE_LEVEL -VOID RaiseClock( - IN PRTMP_ADAPTER pAd, - IN UINT32 *x) -{ - *x = *x | EESK; - RTMP_IO_WRITE32(pAd, E2PROM_CSR, *x); - RTMPusecDelay(1); // Max frequency = 1MHz in Spec. definition -} - -// IRQL = PASSIVE_LEVEL -VOID LowerClock( - IN PRTMP_ADAPTER pAd, - IN UINT32 *x) -{ - *x = *x & ~EESK; - RTMP_IO_WRITE32(pAd, E2PROM_CSR, *x); - RTMPusecDelay(1); -} - -// IRQL = PASSIVE_LEVEL -USHORT ShiftInBits( - IN PRTMP_ADAPTER pAd) -{ - UINT32 x,i; - USHORT data=0; - - RTMP_IO_READ32(pAd, E2PROM_CSR, &x); - - x &= ~( EEDO | EEDI); - - for(i=0; i<16; i++) - { - data = data << 1; - RaiseClock(pAd, &x); - - RTMP_IO_READ32(pAd, E2PROM_CSR, &x); - - x &= ~(EEDI); - if(x & EEDO) - data |= 1; - - LowerClock(pAd, &x); - } - - return data; -} - -// IRQL = PASSIVE_LEVEL -VOID ShiftOutBits( - IN PRTMP_ADAPTER pAd, - IN USHORT data, - IN USHORT count) -{ - UINT32 x,mask; - - mask = 0x01 << (count - 1); - RTMP_IO_READ32(pAd, E2PROM_CSR, &x); - - x &= ~(EEDO | EEDI); - - do - { - x &= ~EEDI; - if(data & mask) x |= EEDI; - - RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); - - RaiseClock(pAd, &x); - LowerClock(pAd, &x); - - mask = mask >> 1; - } while(mask); - - x &= ~EEDI; - RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); -} - -// IRQL = PASSIVE_LEVEL -VOID EEpromCleanup( - IN PRTMP_ADAPTER pAd) -{ - UINT32 x; - - RTMP_IO_READ32(pAd, E2PROM_CSR, &x); - - x &= ~(EECS | EEDI); - RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); - - RaiseClock(pAd, &x); - LowerClock(pAd, &x); -} - -VOID EWEN( - IN PRTMP_ADAPTER pAd) -{ - UINT32 x; - - // reset bits and set EECS - RTMP_IO_READ32(pAd, E2PROM_CSR, &x); - x &= ~(EEDI | EEDO | EESK); - x |= EECS; - RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); - - // kick a pulse - RaiseClock(pAd, &x); - LowerClock(pAd, &x); - - // output the read_opcode and six pulse in that order - ShiftOutBits(pAd, EEPROM_EWEN_OPCODE, 5); - ShiftOutBits(pAd, 0, 6); - - EEpromCleanup(pAd); -} - -VOID EWDS( - IN PRTMP_ADAPTER pAd) -{ - UINT32 x; - - // reset bits and set EECS - RTMP_IO_READ32(pAd, E2PROM_CSR, &x); - x &= ~(EEDI | EEDO | EESK); - x |= EECS; - RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); - - // kick a pulse - RaiseClock(pAd, &x); - LowerClock(pAd, &x); - - // output the read_opcode and six pulse in that order - ShiftOutBits(pAd, EEPROM_EWDS_OPCODE, 5); - ShiftOutBits(pAd, 0, 6); - - EEpromCleanup(pAd); -} - -// IRQL = PASSIVE_LEVEL -USHORT RTMP_EEPROM_READ16( - IN PRTMP_ADAPTER pAd, - IN USHORT Offset) -{ - UINT32 x; - USHORT data; - - Offset /= 2; - // reset bits and set EECS - RTMP_IO_READ32(pAd, E2PROM_CSR, &x); - x &= ~(EEDI | EEDO | EESK); - x |= EECS; - RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); - - // kick a pulse - RaiseClock(pAd, &x); - LowerClock(pAd, &x); - - // output the read_opcode and register number in that order - ShiftOutBits(pAd, EEPROM_READ_OPCODE, 3); - ShiftOutBits(pAd, Offset, pAd->EEPROMAddressNum); - - // Now read the data (16 bits) in from the selected EEPROM word - data = ShiftInBits(pAd); - - EEpromCleanup(pAd); - - return data; -} //ReadEEprom - -VOID RTMP_EEPROM_WRITE16( - IN PRTMP_ADAPTER pAd, - IN USHORT Offset, - IN USHORT Data) -{ - UINT32 x; - - Offset /= 2; - - EWEN(pAd); - - // reset bits and set EECS - RTMP_IO_READ32(pAd, E2PROM_CSR, &x); - x &= ~(EEDI | EEDO | EESK); - x |= EECS; - RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); - - // kick a pulse - RaiseClock(pAd, &x); - LowerClock(pAd, &x); - - // output the read_opcode ,register number and data in that order - ShiftOutBits(pAd, EEPROM_WRITE_OPCODE, 3); - ShiftOutBits(pAd, Offset, pAd->EEPROMAddressNum); - ShiftOutBits(pAd, Data, 16); // 16-bit access - - // read DO status - RTMP_IO_READ32(pAd, E2PROM_CSR, &x); - - EEpromCleanup(pAd); - - RTMPusecDelay(10000); //delay for twp(MAX)=10ms - - EWDS(pAd); - - EEpromCleanup(pAd); -} - +#include "../../rt2860/common/eeprom.c" |