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rtl8192eu-linux-driver/core/rtw_eeprom.c
Magnus Bergmark 1387cf623d
The official RTL8192EU linux driver from D-Link Australia 
Version information: 20140812_rtl8192EU_linux_v4.3.1.1_11320
  2014-08-12
  version 4.3.1.1_11320
Source:
  ftp://files.dlink.com.au/products/DWA-131/REV_E/Drivers/DWA-131_Linux_driver_v4.3.1.1.zip

This version does not currently work on newer kernels, but it does
contain USB ID 2001:3319, which a lot of other repos in GitHub does not.
2015-08-18 21:03:11 +02:00

424 lines
9.9 KiB
C
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/******************************************************************************
*
* Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
*
******************************************************************************/
#define _RTW_EEPROM_C_
#include <drv_conf.h>
#include <osdep_service.h>
#include <drv_types.h>
void up_clk(_adapter* padapter, u16 *x)
{
_func_enter_;
*x = *x | _EESK;
rtw_write8(padapter, EE_9346CR, (u8)*x);
rtw_udelay_os(CLOCK_RATE);
_func_exit_;
}
void down_clk(_adapter * padapter, u16 *x )
{
_func_enter_;
*x = *x & ~_EESK;
rtw_write8(padapter, EE_9346CR, (u8)*x);
rtw_udelay_os(CLOCK_RATE);
_func_exit_;
}
void shift_out_bits(_adapter * padapter, u16 data, u16 count)
{
u16 x,mask;
_func_enter_;
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
mask = 0x01 << (count - 1);
x = rtw_read8(padapter, EE_9346CR);
x &= ~(_EEDO | _EEDI);
do
{
x &= ~_EEDI;
if(data & mask)
x |= _EEDI;
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
rtw_write8(padapter, EE_9346CR, (u8)x);
rtw_udelay_os(CLOCK_RATE);
up_clk(padapter, &x);
down_clk(padapter, &x);
mask = mask >> 1;
} while(mask);
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
x &= ~_EEDI;
rtw_write8(padapter, EE_9346CR, (u8)x);
out:
_func_exit_;
}
u16 shift_in_bits (_adapter * padapter)
{
u16 x,d=0,i;
_func_enter_;
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
x = rtw_read8(padapter, EE_9346CR);
x &= ~( _EEDO | _EEDI);
d = 0;
for(i=0; i<16; i++)
{
d = d << 1;
up_clk(padapter, &x);
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
x = rtw_read8(padapter, EE_9346CR);
x &= ~(_EEDI);
if(x & _EEDO)
d |= 1;
down_clk(padapter, &x);
}
out:
_func_exit_;
return d;
}
void standby(_adapter * padapter )
{
u8 x;
_func_enter_;
x = rtw_read8(padapter, EE_9346CR);
x &= ~(_EECS | _EESK);
rtw_write8(padapter, EE_9346CR,x);
rtw_udelay_os(CLOCK_RATE);
x |= _EECS;
rtw_write8(padapter, EE_9346CR, x);
rtw_udelay_os(CLOCK_RATE);
_func_exit_;
}
u16 wait_eeprom_cmd_done(_adapter* padapter)
{
u8 x;
u16 i,res=_FALSE;
_func_enter_;
standby(padapter );
for (i=0; i<200; i++)
{
x = rtw_read8(padapter, EE_9346CR);
if (x & _EEDO){
res=_TRUE;
goto exit;
}
rtw_udelay_os(CLOCK_RATE);
}
exit:
_func_exit_;
return res;
}
void eeprom_clean(_adapter * padapter)
{
u16 x;
_func_enter_;
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
x = rtw_read8(padapter, EE_9346CR);
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
x &= ~(_EECS | _EEDI);
rtw_write8(padapter, EE_9346CR, (u8)x);
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
up_clk(padapter, &x);
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
down_clk(padapter, &x);
out:
_func_exit_;
}
void eeprom_write16(_adapter * padapter, u16 reg, u16 data)
{
u8 x;
#ifdef CONFIG_RTL8712
u8 tmp8_ori,tmp8_new,tmp8_clk_ori,tmp8_clk_new;
tmp8_ori=rtw_read8(padapter, 0x102502f1);
tmp8_new=tmp8_ori & 0xf7;
if(tmp8_ori != tmp8_new){
rtw_write8(padapter, 0x102502f1, tmp8_new);
RT_TRACE(_module_rtl871x_mp_ioctl_c_,_drv_err_,("====write 0x102502f1=====\n"));
}
tmp8_clk_ori=rtw_read8(padapter,0x10250003);
tmp8_clk_new=tmp8_clk_ori|0x20;
if(tmp8_clk_new!=tmp8_clk_ori){
RT_TRACE(_module_rtl871x_mp_ioctl_c_,_drv_err_,("====write 0x10250003=====\n"));
rtw_write8(padapter, 0x10250003, tmp8_clk_new);
}
#endif
_func_enter_;
x = rtw_read8(padapter, EE_9346CR);
x &= ~(_EEDI | _EEDO | _EESK | _EEM0);
x |= _EEM1 | _EECS;
rtw_write8(padapter, EE_9346CR, x);
shift_out_bits(padapter, EEPROM_EWEN_OPCODE, 5);
if(padapter->EepromAddressSize==8) //CF+ and SDIO
shift_out_bits(padapter, 0, 6);
else //USB
shift_out_bits(padapter, 0, 4);
standby( padapter);
// Commented out by rcnjko, 2004.0
// // Erase this particular word. Write the erase opcode and register
// // number in that order. The opcode is 3bits in length; reg is 6 bits long.
// shift_out_bits(Adapter, EEPROM_ERASE_OPCODE, 3);
// shift_out_bits(Adapter, reg, Adapter->EepromAddressSize);
//
// if (wait_eeprom_cmd_done(Adapter ) == FALSE)
// {
// return;
// }
standby(padapter );
// write the new word to the EEPROM
// send the write opcode the EEPORM
shift_out_bits(padapter, EEPROM_WRITE_OPCODE, 3);
// select which word in the EEPROM that we are writing to.
shift_out_bits(padapter, reg, padapter->EepromAddressSize);
// write the data to the selected EEPROM word.
shift_out_bits(padapter, data, 16);
if (wait_eeprom_cmd_done(padapter ) == _FALSE)
{
goto exit;
}
standby(padapter );
shift_out_bits(padapter, EEPROM_EWDS_OPCODE, 5);
shift_out_bits(padapter, reg, 4);
eeprom_clean(padapter );
exit:
#ifdef CONFIG_RTL8712
if(tmp8_clk_new!=tmp8_clk_ori)
rtw_write8(padapter, 0x10250003, tmp8_clk_ori);
if(tmp8_new!=tmp8_ori)
rtw_write8(padapter, 0x102502f1, tmp8_ori);
#endif
_func_exit_;
return;
}
u16 eeprom_read16(_adapter * padapter, u16 reg) //ReadEEprom
{
u16 x;
u16 data=0;
#ifdef CONFIG_RTL8712
u8 tmp8_ori,tmp8_new,tmp8_clk_ori,tmp8_clk_new;
tmp8_ori= rtw_read8(padapter, 0x102502f1);
tmp8_new = tmp8_ori & 0xf7;
if(tmp8_ori != tmp8_new){
rtw_write8(padapter, 0x102502f1, tmp8_new);
RT_TRACE(_module_rtl871x_mp_ioctl_c_,_drv_err_,("====write 0x102502f1=====\n"));
}
tmp8_clk_ori=rtw_read8(padapter,0x10250003);
tmp8_clk_new=tmp8_clk_ori|0x20;
if(tmp8_clk_new!=tmp8_clk_ori){
RT_TRACE(_module_rtl871x_mp_ioctl_c_,_drv_err_,("====write 0x10250003=====\n"));
rtw_write8(padapter, 0x10250003, tmp8_clk_new);
}
#endif
_func_enter_;
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
// select EEPROM, reset bits, set _EECS
x = rtw_read8(padapter, EE_9346CR);
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
x &= ~(_EEDI | _EEDO | _EESK | _EEM0);
x |= _EEM1 | _EECS;
rtw_write8(padapter, EE_9346CR, (unsigned char)x);
// write the read opcode and register number in that order
// The opcode is 3bits in length, reg is 6 bits long
shift_out_bits(padapter, EEPROM_READ_OPCODE, 3);
shift_out_bits(padapter, reg, padapter->EepromAddressSize);
// Now read the data (16 bits) in from the selected EEPROM word
data = shift_in_bits(padapter);
eeprom_clean(padapter);
out:
#ifdef CONFIG_RTL8712
if(tmp8_clk_new!=tmp8_clk_ori)
rtw_write8(padapter, 0x10250003, tmp8_clk_ori);
if(tmp8_new!=tmp8_ori)
rtw_write8(padapter, 0x102502f1, tmp8_ori);
#endif
_func_exit_;
return data;
}
//From even offset
void eeprom_read_sz(_adapter * padapter, u16 reg, u8* data, u32 sz)
{
u16 x, data16;
u32 i;
_func_enter_;
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
// select EEPROM, reset bits, set _EECS
x = rtw_read8(padapter, EE_9346CR);
if(padapter->bSurpriseRemoved==_TRUE){
RT_TRACE(_module_rtl871x_eeprom_c_,_drv_err_,("padapter->bSurpriseRemoved==_TRUE"));
goto out;
}
x &= ~(_EEDI | _EEDO | _EESK | _EEM0);
x |= _EEM1 | _EECS;
rtw_write8(padapter, EE_9346CR, (unsigned char)x);
// write the read opcode and register number in that order
// The opcode is 3bits in length, reg is 6 bits long
shift_out_bits(padapter, EEPROM_READ_OPCODE, 3);
shift_out_bits(padapter, reg, padapter->EepromAddressSize);
for(i=0; i<sz; i+=2)
{
data16 = shift_in_bits(padapter);
data[i] = data16 & 0xff;
data[i+1] = data16 >>8;
}
eeprom_clean(padapter);
out:
_func_exit_;
}
//addr_off : address offset of the entry in eeprom (not the tuple number of eeprom (reg); that is addr_off !=reg)
u8 eeprom_read(_adapter * padapter, u32 addr_off, u8 sz, u8* rbuf)
{
u8 quotient, remainder, addr_2align_odd;
u16 reg, stmp , i=0, idx = 0;
_func_enter_;
reg = (u16)(addr_off >> 1);
addr_2align_odd = (u8)(addr_off & 0x1);
if(addr_2align_odd) //read that start at high part: e.g 1,3,5,7,9,...
{
stmp = eeprom_read16(padapter, reg);
rbuf[idx++] = (u8) ((stmp>>8)&0xff); //return hogh-part of the short
reg++; sz--;
}
quotient = sz >> 1;
remainder = sz & 0x1;
for( i=0 ; i < quotient; i++)
{
stmp = eeprom_read16(padapter, reg+i);
rbuf[idx++] = (u8) (stmp&0xff);
rbuf[idx++] = (u8) ((stmp>>8)&0xff);
}
reg = reg+i;
if(remainder){ //end of read at lower part of short : 0,2,4,6,...
stmp = eeprom_read16(padapter, reg);
rbuf[idx] = (u8)(stmp & 0xff);
}
_func_exit_;
return _TRUE;
}
VOID read_eeprom_content(_adapter * padapter)
{
_func_enter_;
_func_exit_;
}
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