From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from ns.uli-eckhardt.de ([85.214.28.137]:57013 "EHLO mail.uli-eckhardt.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751453AbaJASv5 (ORCPT ); Wed, 1 Oct 2014 14:51:57 -0400 Received: from [IPv6:2001:4dd0:ff00:8975:90ad:362d:ca31:4d1d] (unknown [IPv6:2001:4dd0:ff00:8975:90ad:362d:ca31:4d1d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.uli-eckhardt.de (Postfix) with ESMTPSA id 7D904548B03 for ; Wed, 1 Oct 2014 20:42:28 +0200 (CEST) Message-ID: <542C4B14.8030708@uli-eckhardt.de> Date: Wed, 01 Oct 2014 20:42:28 +0200 From: Ulrich Eckhardt MIME-Version: 1.0 To: linux-media@vger.kernel.org Subject: Tevii S480 on Unicable SCR System Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org List-ID: Hi, i have a development computer with a Tevii S480 connected to a Satellite channel router (EN50494). As long as I haven't started a video application this computers blocks any other receiver connected to this cable. I have measured the output of the Tevii card and found, that after start of the computer, the output is set to 18V. This is not reset after loading and initializing the drivers. So no other receiver could sent DiSEqC commands to the SCR until a video application at this computer initializes the voltage correctly. I think the voltage needs to be switched off until this card is really in use by an application. I have patched the file drivers/media/dvb-frontends/ds3000.c to initialize the voltage to OFF, which works for me. But I am not sure, if this is really the correct solution: --- ds3000.orig 2014-10-01 19:41:37.611631299 +0200 +++ ds3000.c 2014-10-01 20:18:19.602930920 +0200 @@ -864,6 +864,7 @@ memcpy(&state->frontend.ops, &ds3000_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; + ds3000_set_voltage (&state->frontend, SEC_VOLTAGE_OFF); return &state->frontend; error3: ------------------------------------------------------- Best Regards Uli -- Ulrich Eckhardt http://www.uli-eckhardt.de Ein Blitzableiter auf dem Kirchturm ist das denkbar stärkste Misstrauensvotum gegen den lieben Gott. (Karl Krauss)