mirror of
https://github.com/torvalds/linux.git
synced 2024-12-12 14:12:51 +00:00
c942fddf87
Based on 3 normalized pattern(s): 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 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 [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] 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 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 [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
94 lines
1.6 KiB
C
94 lines
1.6 KiB
C
// 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];
|
|
};
|
|
|
|
int netup_eeprom_write(struct i2c_adapter *i2c_adap, u8 addr, u8 data)
|
|
{
|
|
int ret;
|
|
unsigned char bufw[2];
|
|
|
|
/* Write into EEPROM */
|
|
struct i2c_msg msg[] = {
|
|
{
|
|
.addr = EEPROM_I2C_ADDR,
|
|
.flags = 0,
|
|
.buf = &bufw[0],
|
|
.len = 2
|
|
}
|
|
};
|
|
|
|
bufw[0] = addr;
|
|
bufw[1] = data;
|
|
|
|
ret = i2c_transfer(i2c_adap, msg, 1);
|
|
|
|
if (ret != 1) {
|
|
pr_err("eeprom i2c write error, status=%d\n", ret);
|
|
return -1;
|
|
}
|
|
|
|
mdelay(10); /* prophylactic delay, datasheet write cycle time = 5 ms */
|
|
return 0;
|
|
};
|
|
|
|
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);
|
|
};
|