diff options
Diffstat (limited to 'drivers/media/dvb/b2c2/flexcop-eeprom.c')
-rw-r--r-- | drivers/media/dvb/b2c2/flexcop-eeprom.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/drivers/media/dvb/b2c2/flexcop-eeprom.c b/drivers/media/dvb/b2c2/flexcop-eeprom.c deleted file mode 100644 index a25373a9bd8..00000000000 --- a/drivers/media/dvb/b2c2/flexcop-eeprom.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III - * flexcop-eeprom.c - eeprom access methods (currently only MAC address reading) - * see flexcop.c for copyright information - */ -#include "flexcop.h" - -#if 0 -/*EEPROM (Skystar2 has one "24LC08B" chip on board) */ -static int eeprom_write(struct adapter *adapter, u16 addr, u8 *buf, u16 len) -{ - return flex_i2c_write(adapter, 0x20000000, 0x50, addr, buf, len); -} - -static int eeprom_lrc_write(struct adapter *adapter, u32 addr, - u32 len, u8 *wbuf, u8 *rbuf, int retries) -{ -int i; - -for (i = 0; i < retries; i++) { - if (eeprom_write(adapter, addr, wbuf, len) == len) { - if (eeprom_lrc_read(adapter, addr, len, rbuf, retries) == 1) - return 1; - } - } - return 0; -} - -/* These functions could be used to unlock SkyStar2 cards. */ - -static int eeprom_writeKey(struct adapter *adapter, u8 *key, u32 len) -{ - u8 rbuf[20]; - u8 wbuf[20]; - - if (len != 16) - return 0; - - memcpy(wbuf, key, len); - wbuf[16] = 0; - wbuf[17] = 0; - wbuf[18] = 0; - wbuf[19] = calc_lrc(wbuf, 19); - return eeprom_lrc_write(adapter, 0x3e4, 20, wbuf, rbuf, 4); -} - -static int eeprom_readKey(struct adapter *adapter, u8 *key, u32 len) -{ - u8 buf[20]; - - if (len != 16) - return 0; - - if (eeprom_lrc_read(adapter, 0x3e4, 20, buf, 4) == 0) - return 0; - - memcpy(key, buf, len); - return 1; -} - -static char eeprom_set_mac_addr(struct adapter *adapter, char type, u8 *mac) -{ - u8 tmp[8]; - - if (type != 0) { - tmp[0] = mac[0]; - tmp[1] = mac[1]; - tmp[2] = mac[2]; - tmp[3] = mac[5]; - tmp[4] = mac[6]; - tmp[5] = mac[7]; - } else { - tmp[0] = mac[0]; - tmp[1] = mac[1]; - tmp[2] = mac[2]; - tmp[3] = mac[3]; - tmp[4] = mac[4]; - tmp[5] = mac[5]; - } - - tmp[6] = 0; - tmp[7] = calc_lrc(tmp, 7); - - if (eeprom_write(adapter, 0x3f8, tmp, 8) == 8) - return 1; - return 0; -} - -static int flexcop_eeprom_read(struct flexcop_device *fc, - u16 addr, u8 *buf, u16 len) -{ - return fc->i2c_request(fc,FC_READ,FC_I2C_PORT_EEPROM,0x50,addr,buf,len); -} - -#endif - -static u8 calc_lrc(u8 *buf, int len) -{ - int i; - u8 sum = 0; - for (i = 0; i < len; i++) - sum = sum ^ buf[i]; - return sum; -} - -static int flexcop_eeprom_request(struct flexcop_device *fc, - flexcop_access_op_t op, u16 addr, u8 *buf, u16 len, int retries) -{ - int i,ret = 0; - u8 chipaddr = 0x50 | ((addr >> 8) & 3); - for (i = 0; i < retries; i++) { - ret = fc->i2c_request(&fc->fc_i2c_adap[1], op, chipaddr, - addr & 0xff, buf, len); - if (ret == 0) - break; - } - return ret; -} - -static int flexcop_eeprom_lrc_read(struct flexcop_device *fc, u16 addr, - u8 *buf, u16 len, int retries) -{ - int ret = flexcop_eeprom_request(fc, FC_READ, addr, buf, len, retries); - if (ret == 0) - if (calc_lrc(buf, len - 1) != buf[len - 1]) - ret = -EINVAL; - return ret; -} - -/* JJ's comment about extended == 1: it is not presently used anywhere but was - * added to the low-level functions for possible support of EUI64 */ -int flexcop_eeprom_check_mac_addr(struct flexcop_device *fc, int extended) -{ - u8 buf[8]; - int ret = 0; - - if ((ret = flexcop_eeprom_lrc_read(fc,0x3f8,buf,8,4)) == 0) { - if (extended != 0) { - err("TODO: extended (EUI64) MAC addresses aren't " - "completely supported yet"); - ret = -EINVAL; - } else - memcpy(fc->dvb_adapter.proposed_mac,buf,6); - } - return ret; -} -EXPORT_SYMBOL(flexcop_eeprom_check_mac_addr); |