View source for TwinhanDTV HDTV Mini Cab

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[[Category: Hardware]]
[[Category: Video]]
[[Category: TV Cards]]

= Cards =
*TwinhanDTV HDTV Mini Cab DVB-C

= Problem =
There is a other TwinhanDTV card whit CI that has the same ID as this one.
You can use this card "as it is", but you can't scan for channels then.
To get this working you need to change some kernel code.

== Solution ==
Download kernel source (via apt-get) + nessesary packages!
 apt-get install linux-source-2.6.22 kernel-package libncurses5-dev fakeroot (all?)
 tar jxvf <kernel source>
 ln -s <kernel source> linux
 cd linux

Edit drivers/media/dvb/bt8xx/dst.c in kernel source
 Line 845-852:
 {
  .device_id = "DCT-CI",
  .offset = 1,
  .dst_type = DST_TYPE_IS_CABLE,
  .type_flags = DST_TYPE_HAS_MULTI_FE | DST_TYPE_HAS_FW_1 | DST_TYPE_HAS_FW_2 | DST_TYPE_HAS_VLF,
  .dst_feature = DST_TYPE_HAS_CA,
  .tuner_type = 0
 },
 
 Change:
 .dst_feature =  DST_TYPE_HAS_CA,
 To:
 .dst_feature =  0,

 Line 1359-1366:
 if ((state->type_flags & DST_TYPE_HAS_VLF) &&
   !(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)) {
           dprintk(verbose, DST_INFO, 1, "checksum failure ? ");
           return -EIO;
   }
 
 Change:
 !(state->dst_type == DST_TYPE_IS_CABLE) &&
 To:
 // !(state->dst_type == DST_TYPE_IS_CABLE) &&

Use default kernel .config
 cp /boot/config-$(uname -r) .config

Apply config and prepare
 make oldconfig && make prepare && make prepare scripts

Build only the driver
 make M=drivers/media/dvb/bt8xx/

Copy modules to your default working kernel
 cp drivers/media/dvb/bt8xx/*.ko /lib/modules/<version>/kernel/drivers/media/dvb/bt8xx/

Reboot


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--[[User:Mami|Mami]] 22:27, 29 July 2008 (PDT)