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V4L/DVB (10797): Add EEPROM code for NetUP Dual DVB-S2 CI card.
Signed-off-by: Abylay Ospan <aospan@netup.ru> Signed-off-by: Igor M. Liplianin <liplianin@netup.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Abylay Ospan
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Mauro Carvalho Chehab
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Mar 30, 2009
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| /* | ||
| * 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> | ||
| * | ||
| * 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. | ||
| * | ||
| * 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., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
| */ | ||
|
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| # | ||
| #include "cx23885.h" | ||
| #include "netup-eeprom.h" | ||
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| #define EEPROM_I2C_ADDR 0x50 | ||
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| int netup_eeprom_read(struct i2c_adapter *i2c_adap, u8 addr) | ||
| { | ||
| int ret; | ||
| unsigned char buf[2]; | ||
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| /* 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 | ||
| } | ||
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| }; | ||
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| buf[0] = addr; | ||
| buf[1] = 0x0; | ||
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| ret = i2c_transfer(i2c_adap, msg, 2); | ||
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| if (ret != 2) { | ||
| printk(KERN_ERR "eeprom i2c read error, status=%d\n", ret); | ||
| return -1; | ||
| } | ||
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| return buf[1]; | ||
| }; | ||
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| int netup_eeprom_write(struct i2c_adapter *i2c_adap, u8 addr, u8 data) | ||
| { | ||
| int ret; | ||
| unsigned char bufw[2]; | ||
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| /* Write into EEPROM */ | ||
| struct i2c_msg msg[] = { | ||
| { | ||
| .addr = EEPROM_I2C_ADDR, | ||
| .flags = 0, | ||
| .buf = &bufw[0], | ||
| .len = 2 | ||
| } | ||
| }; | ||
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| bufw[0] = addr; | ||
| bufw[1] = data; | ||
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| ret = i2c_transfer(i2c_adap, msg, 1); | ||
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| if (ret != 1) { | ||
| printk(KERN_ERR "eeprom i2c write error, status=%d\n", ret); | ||
| return -1; | ||
| } | ||
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| mdelay(10); /* prophylactic delay, datasheet write cycle time = 5 ms */ | ||
| return 0; | ||
| }; | ||
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| void netup_get_card_info(struct i2c_adapter *i2c_adap, | ||
| struct netup_card_info *cinfo) | ||
| { | ||
| int i, j; | ||
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| cinfo->rev = netup_eeprom_read(i2c_adap, 13); | ||
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| for (i = 0, j = 0; i < 6; i++, j++) | ||
| cinfo->port[0].mac[j] = netup_eeprom_read(i2c_adap, i); | ||
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| for (i = 6, j = 0; i < 12; i++, j++) | ||
| cinfo->port[1].mac[j] = netup_eeprom_read(i2c_adap, i); | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| /* | ||
| * netup-eeprom.h | ||
| * | ||
| * 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> | ||
| * | ||
| * 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. | ||
| * | ||
| * 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., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
| */ | ||
|
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| #ifndef NETUP_EEPROM_H | ||
| #define NETUP_EEPROM_H | ||
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| struct netup_port_info { | ||
| u8 mac[6];/* card MAC address */ | ||
| }; | ||
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| struct netup_card_info { | ||
| struct netup_port_info port[2];/* ports - 1,2 */ | ||
| u8 rev;/* card revision */ | ||
| }; | ||
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| extern int netup_eeprom_read(struct i2c_adapter *i2c_adap, u8 addr); | ||
| extern int netup_eeprom_write(struct i2c_adapter *i2c_adap, u8 addr, u8 data); | ||
| extern void netup_get_card_info(struct i2c_adapter *i2c_adap, | ||
| struct netup_card_info *cinfo); | ||
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| #endif |