diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-14 19:13:30 +0400 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-15 23:36:22 +0400 |
commit | b285192a43f0432d82c2c10974204e78af0da596 (patch) | |
tree | 618aa87e760c9c949eca9e4df6ae0eeffa11dcfc /drivers/media/pci/cx23885/netup-eeprom.c | |
parent | 68de959f773a1d49096835c411390bceff5d1549 (diff) | |
download | linux-b285192a43f0432d82c2c10974204e78af0da596.tar.xz |
[media] rename most media/video pci drivers to media/pci
Rename all PCI drivers with their own directory under
drivers/media/video into drivers/media/pci and update the
building system.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/pci/cx23885/netup-eeprom.c')
-rw-r--r-- | drivers/media/pci/cx23885/netup-eeprom.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/drivers/media/pci/cx23885/netup-eeprom.c b/drivers/media/pci/cx23885/netup-eeprom.c new file mode 100644 index 000000000000..98a48f500684 --- /dev/null +++ b/drivers/media/pci/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 <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. + */ + +# +#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, 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); +}; |