1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * 24LC02 EEPROM driver in conjunction with NetUP Dual DVB-S2 CI card
8 * Copyright (C) 2009 NetUP Inc.
9 * Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
14 #include "netup-eeprom.h"
16 #define EEPROM_I2C_ADDR 0x50
18 int netup_eeprom_read(struct i2c_adapter *i2c_adap, u8 addr)
23 /* Read from EEPROM */
24 struct i2c_msg msg[] = {
26 .addr = EEPROM_I2C_ADDR,
31 .addr = EEPROM_I2C_ADDR,
42 ret = i2c_transfer(i2c_adap, msg, 2);
45 pr_err("eeprom i2c read error, status=%d\n", ret);
52 int netup_eeprom_write(struct i2c_adapter *i2c_adap, u8 addr, u8 data)
55 unsigned char bufw[2];
57 /* Write into EEPROM */
58 struct i2c_msg msg[] = {
60 .addr = EEPROM_I2C_ADDR,
70 ret = i2c_transfer(i2c_adap, msg, 1);
73 pr_err("eeprom i2c write error, status=%d\n", ret);
77 mdelay(10); /* prophylactic delay, datasheet write cycle time = 5 ms */
81 void netup_get_card_info(struct i2c_adapter *i2c_adap,
82 struct netup_card_info *cinfo)
86 cinfo->rev = netup_eeprom_read(i2c_adap, 63);
88 for (i = 64, j = 0; i < 70; i++, j++)
89 cinfo->port[0].mac[j] = netup_eeprom_read(i2c_adap, i);
91 for (i = 70, j = 0; i < 76; i++, j++)
92 cinfo->port[1].mac[j] = netup_eeprom_read(i2c_adap, i);