// SPDX-License-Identifier: GPL-2.0-or-later

/*
 * netup-eeprom.c
 *
 * 24LC02 EEPROM driver in conjunction with NetUP Dual DVB-S2 CI card
 *
 * Copyright (C) 2009 NetUP Inc.
 * Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
 */

#
#include "cx23885.h"
#include "netup-eeprom.h"

#define EEPROM_I2C_ADDR 0x50

int netup_eeprom_read(struct i2c_adapter *i2c_adap, u8 addr)
{
        int ret;
        unsigned char buf[2];

        /* Read from EEPROM */
        struct i2c_msg msg[] = {
                {
                        .addr   = EEPROM_I2C_ADDR,
                        .flags  = 0,
                        .buf    = &buf[0],
                        .len    = 1
                }, {
                        .addr   = EEPROM_I2C_ADDR,
                        .flags  = I2C_M_RD,
                        .buf    = &buf[1],
                        .len    = 1
                }

        };

        buf[0] = addr;
        buf[1] = 0x0;

        ret = i2c_transfer(i2c_adap, msg, 2);

        if (ret != 2) {
                pr_err("eeprom i2c read error, status=%d\n", ret);
                return -1;
        }

        return buf[1];
};

void netup_get_card_info(struct i2c_adapter *i2c_adap,
                                struct netup_card_info *cinfo)
{
        int i, j;

        cinfo->rev =  netup_eeprom_read(i2c_adap, 63);

        for (i = 64, j = 0; i < 70; i++, j++)
                cinfo->port[0].mac[j] =  netup_eeprom_read(i2c_adap, i);

        for (i = 70, j = 0; i < 76; i++, j++)
                cinfo->port[1].mac[j] =  netup_eeprom_read(i2c_adap, i);
};