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| author | Igor M. Liplianin <liplianin@me.by> | 2011-09-23 23:33:50 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-09-24 05:07:42 +0200 |
| commit | 4e2c53fde651be6225d9f940c02b2eabc2f9591c (patch) | |
| tree | 7427afe586aed591065cae6c6737be6f8df932b3 /drivers/media/dvb/ttpci/ttpci-eeprom.c | |
| parent | [media] media, rc: Use static inline functions to kill warnings (diff) | |
| download | linux-4e2c53fde651be6225d9f940c02b2eabc2f9591c.tar.xz linux-4e2c53fde651be6225d9f940c02b2eabc2f9591c.zip | |
[media] dvb: Add support for pctv452e
Signed-off-by: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/ttpci/ttpci-eeprom.c')
| -rw-r--r-- | drivers/media/dvb/ttpci/ttpci-eeprom.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/media/dvb/ttpci/ttpci-eeprom.c b/drivers/media/dvb/ttpci/ttpci-eeprom.c index 7dd54b3026a2..32d43156c548 100644 --- a/drivers/media/dvb/ttpci/ttpci-eeprom.c +++ b/drivers/media/dvb/ttpci/ttpci-eeprom.c @@ -85,6 +85,35 @@ static int getmac_tt(u8 * decodedMAC, u8 * encodedMAC) return 0; } +int ttpci_eeprom_decode_mac(u8 *decodedMAC, u8 *encodedMAC) +{ + u8 xor[20] = { 0x72, 0x23, 0x68, 0x19, 0x5c, 0xa8, 0x71, 0x2c, + 0x54, 0xd3, 0x7b, 0xf1, 0x9E, 0x23, 0x16, 0xf6, + 0x1d, 0x36, 0x64, 0x78}; + u8 data[20]; + int i; + + memcpy(data, encodedMAC, 20); + + for (i = 0; i < 20; i++) + data[i] ^= xor[i]; + for (i = 0; i < 10; i++) + data[i] = ((data[2 * i + 1] << 8) | data[2 * i]) + >> ((data[2 * i + 1] >> 6) & 3); + + if (check_mac_tt(data)) + return -ENODEV; + + decodedMAC[0] = data[2]; + decodedMAC[1] = data[1]; + decodedMAC[2] = data[0]; + decodedMAC[3] = data[6]; + decodedMAC[4] = data[5]; + decodedMAC[5] = data[4]; + return 0; +} +EXPORT_SYMBOL(ttpci_eeprom_decode_mac); + static int ttpci_eeprom_read_encodedMAC(struct i2c_adapter *adapter, u8 * encodedMAC) { int ret; |