From b45c0551f94dbc160e94f48a034a51312acec81d Mon Sep 17 00:00:00 2001 From: Abylay Ospan Date: Tue, 3 Mar 2009 11:00:18 -0300 Subject: [PATCH] V4L/DVB (10797): Add EEPROM code for NetUP Dual DVB-S2 CI card. Signed-off-by: Abylay Ospan Signed-off-by: Igor M. Liplianin Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx23885/netup-eeprom.c | 107 +++++++++++++++++++++++++++++ drivers/media/video/cx23885/netup-eeprom.h | 42 +++++++++++ 2 files changed, 149 insertions(+) create mode 100644 drivers/media/video/cx23885/netup-eeprom.c create mode 100644 drivers/media/video/cx23885/netup-eeprom.h diff --git a/drivers/media/video/cx23885/netup-eeprom.c b/drivers/media/video/cx23885/netup-eeprom.c new file mode 100644 index 0000000..042bbbb --- /dev/null +++ b/drivers/media/video/cx23885/netup-eeprom.c @@ -0,0 +1,107 @@ + +/* + * 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 + * + * 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. + */ + +# +#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) { + printk(KERN_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) { + printk(KERN_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, 13); + + for (i = 0, j = 0; i < 6; i++, j++) + cinfo->port[0].mac[j] = netup_eeprom_read(i2c_adap, i); + + for (i = 6, j = 0; i < 12; i++, j++) + cinfo->port[1].mac[j] = netup_eeprom_read(i2c_adap, i); +}; diff --git a/drivers/media/video/cx23885/netup-eeprom.h b/drivers/media/video/cx23885/netup-eeprom.h new file mode 100644 index 0000000..13926e1 --- /dev/null +++ b/drivers/media/video/cx23885/netup-eeprom.h @@ -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 + * + * 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. + */ + +#ifndef NETUP_EEPROM_H +#define NETUP_EEPROM_H + +struct netup_port_info { + u8 mac[6];/* card MAC address */ +}; + +struct netup_card_info { + struct netup_port_info port[2];/* ports - 1,2 */ + u8 rev;/* card revision */ +}; + +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); + +#endif -- 2.7.4