The FE_GET_FRONTEND ioctl seems to return the wrong frequency for TwinHan DST cards - looking at the code in dst_get_tuna shows that it only looks at two bytes while fills in three when setting the frequency for DVB-T and DVB-C cards. In addition it doesn't multiply the extracted value by 1000 to match the division by 1000 that dst_set_freq does when setting the frequency. All this seems to match up with the resut being off by a factor of 256000 on my DVB-T card. The attached patch corrects both issues and seems to resolve the problem on my system. Tom -- Tom Hughes (tom@xxxxxxxxxx) http://www.compton.nu/ -------------- next part -------------- Index: linux/drivers/media/dvb/bt8xx/dst.c =================================================================== RCS file: /cvs/linuxtv/dvb-kernel/linux/drivers/media/dvb/bt8xx/dst.c,v retrieving revision 1.39 diff -u -u -r1.39 dst.c --- linux/drivers/media/dvb/bt8xx/dst.c 10 Sep 2005 16:20:12 -0000 1.39 +++ linux/drivers/media/dvb/bt8xx/dst.c 12 Sep 2005 18:21:59 -0000 @@ -1093,7 +1093,13 @@ } if (state->rx_tuna[2] == 0 && state->rx_tuna[3] == 0) return 0; - state->decode_freq = ((state->rx_tuna[2] & 0x7f) << 8) + state->rx_tuna[3]; + + if (state->dst_type == DST_TYPE_IS_SAT) { + state->decode_freq = ((state->rx_tuna[2] & 0x7f) << 8) + state->rx_tuna[3]; + } else { + state->decode_freq = ((state->rx_tuna[2] & 0x7f) << 16) + (state->rx_tuna[3] << 8) + state->rx_tuna[4]; + } + state->decode_freq = state->decode_freq * 1000; state->decode_lock = 1; state->diseq_flags |= HAS_LOCK;
