Remove check "state->dst_type == DST_DTYPE_IS_CABLE" in function
dst_get_tuna (around line 1352) to select the correct checksum
computation
Fill in the .caps field in struct dst_dvbc_ops (around line 1824) with
all the supported QAM modulation methods to match the capabilities of
the card as implemented in function dst_set_modulation (around line
502). Note that beginning with linux kernel version 2.6.32 the
modulation method is checked (by function
dvb_frontend_check_parameters in file
drivers/media/dvb/dvb-core/dvb_frontend.c) and thus tuning fails if
you use a modulation method that is not present in the .caps field.
This patch has been tested on a Twinhan VP2031A DVB-C card with the
2.6.32.2 kernel.
Signed-off-by: Klaas de Waal <klaas.de.waal@xxxxxxxxx>
------------------------------------------
diff -r b6b82258cf5e linux/drivers/media/dvb/bt8xx/dst.c
--- a/linux/drivers/media/dvb/bt8xx/dst.c Thu Dec 31 19:14:54 2009 -0200
+++ b/linux/drivers/media/dvb/bt8xx/dst.c Sat Jan 09 11:41:52 2010 +0100
@@ -1352,7 +1352,7 @@
return retval;
}
if ((state->type_flags & DST_TYPE_HAS_VLF) &&
- !(state->dst_type == DST_TYPE_IS_CABLE) &&
+ /* !(state->dst_type == DST_TYPE_IS_CABLE) && */
!(state->dst_type == DST_TYPE_IS_ATSC)) {
if (state->rx_tuna[9] != dst_check_sum(&state->rx_tuna[0], 9)) {
@@ -1821,7 +1821,7 @@
.symbol_rate_min = 1000000,
.symbol_rate_max = 45000000,
/* . symbol_rate_tolerance = ???,*/
- .caps = FE_CAN_FEC_AUTO | FE_CAN_QAM_AUTO
+ .caps = FE_CAN_FEC_AUTO | FE_CAN_QAM_16 | FE_CAN_QAM_32 |
FE_CAN_QAM_64 | FE_CAN_QAM_128 | FE_CAN_QAM_256
},
.release = dst_release,
--
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