From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mxin.ulb.ac.be ([164.15.128.112]:17755 "EHLO mxin.ulb.ac.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753629Ab0G0I6A (ORCPT ); Tue, 27 Jul 2010 04:58:00 -0400 Subject: Patch for TwinHan VT DST and compatible DVB-T cards From: Arnuschky To: linux-media@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Date: Tue, 27 Jul 2010 10:48:08 +0200 Message-ID: <1280220488.21267.8.camel@edison> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Hi, here a small patch to get a TwinHan VT DST DVB-T card working with kernels >= 2.6.32. Analogously to http://linuxtv.org/hg/v4l-dvb/rev/0e735b509163 I had to: "Fill in the .caps field in struct dst_dvbt_ops (around line 1763) 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." Patch: diff -r 9652f85e688a linux/drivers/media/dvb/bt8xx/dst.c --- a/linux/drivers/media/dvb/bt8xx/dst.c Thu May 27 02:02:09 2010 -0300 +++ b/linux/drivers/media/dvb/bt8xx/dst.c Tue Jul 27 09:34:38 2010 +0200 @@ -1763,7 +1763,15 @@ .frequency_min = 137000000, .frequency_max = 858000000, .frequency_stepsize = 166667, - .caps = FE_CAN_FEC_AUTO | FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO + .caps = FE_CAN_FEC_AUTO | + FE_CAN_QAM_AUTO | + FE_CAN_QAM_16 | + FE_CAN_QAM_32 | + FE_CAN_QAM_64 | + FE_CAN_QAM_128 | + FE_CAN_QAM_256 | + FE_CAN_TRANSMISSION_MODE_AUTO | + FE_CAN_GUARD_INTERVAL_AUTO }, .release = dst_release, ---------------------8<-------------------------- Tested on 2.6.32-24, works fine. Thanks to Klaas de Waal for creating the original patch for the DVB-C cards. Hope this helps someone, Arne