mirror of
https://github.com/morrownr/8821cu-20210916.git
synced 2024-12-28 17:09:32 +00:00
330 lines
6.9 KiB
C
330 lines
6.9 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2007 - 2017 Realtek Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*****************************************************************************/
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#define _RTW_EEPROM_C_
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#include <drv_conf.h>
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#include <osdep_service.h>
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#include <drv_types.h>
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void up_clk(_adapter *padapter, u16 *x)
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{
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*x = *x | _EESK;
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rtw_write8(padapter, EE_9346CR, (u8)*x);
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rtw_udelay_os(CLOCK_RATE);
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}
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void down_clk(_adapter *padapter, u16 *x)
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{
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*x = *x & ~_EESK;
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rtw_write8(padapter, EE_9346CR, (u8)*x);
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rtw_udelay_os(CLOCK_RATE);
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}
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void shift_out_bits(_adapter *padapter, u16 data, u16 count)
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{
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u16 x, mask;
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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mask = 0x01 << (count - 1);
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x = rtw_read8(padapter, EE_9346CR);
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x &= ~(_EEDO | _EEDI);
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do {
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x &= ~_EEDI;
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if (data & mask)
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x |= _EEDI;
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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rtw_write8(padapter, EE_9346CR, (u8)x);
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rtw_udelay_os(CLOCK_RATE);
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up_clk(padapter, &x);
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down_clk(padapter, &x);
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mask = mask >> 1;
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} while (mask);
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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x &= ~_EEDI;
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rtw_write8(padapter, EE_9346CR, (u8)x);
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out:
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return;
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}
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u16 shift_in_bits(_adapter *padapter)
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{
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u16 x, d = 0, i;
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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x = rtw_read8(padapter, EE_9346CR);
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x &= ~(_EEDO | _EEDI);
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d = 0;
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for (i = 0; i < 16; i++) {
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d = d << 1;
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up_clk(padapter, &x);
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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x = rtw_read8(padapter, EE_9346CR);
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x &= ~(_EEDI);
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if (x & _EEDO)
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d |= 1;
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down_clk(padapter, &x);
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}
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out:
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return d;
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}
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void standby(_adapter *padapter)
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{
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u8 x;
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x = rtw_read8(padapter, EE_9346CR);
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x &= ~(_EECS | _EESK);
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rtw_write8(padapter, EE_9346CR, x);
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rtw_udelay_os(CLOCK_RATE);
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x |= _EECS;
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rtw_write8(padapter, EE_9346CR, x);
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rtw_udelay_os(CLOCK_RATE);
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}
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u16 wait_eeprom_cmd_done(_adapter *padapter)
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{
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u8 x;
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u16 i, res = _FALSE;
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standby(padapter);
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for (i = 0; i < 200; i++) {
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x = rtw_read8(padapter, EE_9346CR);
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if (x & _EEDO) {
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res = _TRUE;
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goto exit;
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}
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rtw_udelay_os(CLOCK_RATE);
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}
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exit:
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return res;
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}
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void eeprom_clean(_adapter *padapter)
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{
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u16 x;
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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x = rtw_read8(padapter, EE_9346CR);
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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x &= ~(_EECS | _EEDI);
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rtw_write8(padapter, EE_9346CR, (u8)x);
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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up_clk(padapter, &x);
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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down_clk(padapter, &x);
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out:
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return;
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}
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void eeprom_write16(_adapter *padapter, u16 reg, u16 data)
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{
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u8 x;
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x = rtw_read8(padapter, EE_9346CR);
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x &= ~(_EEDI | _EEDO | _EESK | _EEM0);
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x |= _EEM1 | _EECS;
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rtw_write8(padapter, EE_9346CR, x);
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shift_out_bits(padapter, EEPROM_EWEN_OPCODE, 5);
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if (padapter->EepromAddressSize == 8) /* CF+ and SDIO */
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shift_out_bits(padapter, 0, 6);
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else /* USB */
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shift_out_bits(padapter, 0, 4);
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standby(padapter);
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/* Commented out by rcnjko, 2004.0
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* Erase this particular word. Write the erase opcode and register
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* number in that order. The opcode is 3bits in length; reg is 6 bits long. */
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/* shift_out_bits(Adapter, EEPROM_ERASE_OPCODE, 3);
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* shift_out_bits(Adapter, reg, Adapter->EepromAddressSize);
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*
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* if (wait_eeprom_cmd_done(Adapter ) == FALSE)
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* {
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* return;
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* } */
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standby(padapter);
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/* write the new word to the EEPROM */
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/* send the write opcode the EEPORM */
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shift_out_bits(padapter, EEPROM_WRITE_OPCODE, 3);
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/* select which word in the EEPROM that we are writing to. */
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shift_out_bits(padapter, reg, padapter->EepromAddressSize);
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/* write the data to the selected EEPROM word. */
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shift_out_bits(padapter, data, 16);
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if (wait_eeprom_cmd_done(padapter) == _FALSE)
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goto exit;
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standby(padapter);
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shift_out_bits(padapter, EEPROM_EWDS_OPCODE, 5);
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shift_out_bits(padapter, reg, 4);
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eeprom_clean(padapter);
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exit:
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return;
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}
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u16 eeprom_read16(_adapter *padapter, u16 reg) /* ReadEEprom */
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{
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u16 x;
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u16 data = 0;
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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/* select EEPROM, reset bits, set _EECS */
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x = rtw_read8(padapter, EE_9346CR);
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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x &= ~(_EEDI | _EEDO | _EESK | _EEM0);
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x |= _EEM1 | _EECS;
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rtw_write8(padapter, EE_9346CR, (unsigned char)x);
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/* write the read opcode and register number in that order */
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/* The opcode is 3bits in length, reg is 6 bits long */
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shift_out_bits(padapter, EEPROM_READ_OPCODE, 3);
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shift_out_bits(padapter, reg, padapter->EepromAddressSize);
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/* Now read the data (16 bits) in from the selected EEPROM word */
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data = shift_in_bits(padapter);
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eeprom_clean(padapter);
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out:
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return data;
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}
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/* From even offset */
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void eeprom_read_sz(_adapter *padapter, u16 reg, u8 *data, u32 sz)
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{
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u16 x, data16;
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u32 i;
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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/* select EEPROM, reset bits, set _EECS */
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x = rtw_read8(padapter, EE_9346CR);
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if (rtw_is_surprise_removed(padapter)) {
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goto out;
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}
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x &= ~(_EEDI | _EEDO | _EESK | _EEM0);
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x |= _EEM1 | _EECS;
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rtw_write8(padapter, EE_9346CR, (unsigned char)x);
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/* write the read opcode and register number in that order */
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/* The opcode is 3bits in length, reg is 6 bits long */
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shift_out_bits(padapter, EEPROM_READ_OPCODE, 3);
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shift_out_bits(padapter, reg, padapter->EepromAddressSize);
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for (i = 0; i < sz; i += 2) {
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data16 = shift_in_bits(padapter);
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data[i] = data16 & 0xff;
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data[i + 1] = data16 >> 8;
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}
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eeprom_clean(padapter);
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out:
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return;
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}
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/* addr_off : address offset of the entry in eeprom (not the tuple number of eeprom (reg); that is addr_off !=reg) */
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u8 eeprom_read(_adapter *padapter, u32 addr_off, u8 sz, u8 *rbuf)
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{
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u8 quotient, remainder, addr_2align_odd;
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u16 reg, stmp , i = 0, idx = 0;
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reg = (u16)(addr_off >> 1);
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addr_2align_odd = (u8)(addr_off & 0x1);
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if (addr_2align_odd) { /* read that start at high part: e.g 1,3,5,7,9,... */
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stmp = eeprom_read16(padapter, reg);
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rbuf[idx++] = (u8)((stmp >> 8) & 0xff); /* return hogh-part of the short */
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reg++;
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sz--;
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}
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quotient = sz >> 1;
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remainder = sz & 0x1;
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for (i = 0 ; i < quotient; i++) {
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stmp = eeprom_read16(padapter, reg + i);
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rbuf[idx++] = (u8)(stmp & 0xff);
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rbuf[idx++] = (u8)((stmp >> 8) & 0xff);
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}
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reg = reg + i;
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if (remainder) { /* end of read at lower part of short : 0,2,4,6,... */
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stmp = eeprom_read16(padapter, reg);
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rbuf[idx] = (u8)(stmp & 0xff);
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}
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return _TRUE;
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}
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void read_eeprom_content(_adapter *padapter)
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{
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}
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