From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DC6FAC43387 for ; Wed, 19 Dec 2018 10:48:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A8E5120866 for ; Wed, 19 Dec 2018 10:48:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728879AbeLSKsb (ORCPT ); Wed, 19 Dec 2018 05:48:31 -0500 Received: from quechua.inka.de ([193.197.184.2]:50321 "EHLO mail.inka.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727586AbeLSKsb (ORCPT ); Wed, 19 Dec 2018 05:48:31 -0500 X-Greylist: delayed 1101 seconds by postgrey-1.27 at vger.kernel.org; Wed, 19 Dec 2018 05:48:31 EST Received: from localhost by mail.inka.de with local-rmail id 1gZZ7B-0001Kk-9z; Wed, 19 Dec 2018 11:30:09 +0100 Received: by raven.inka.de (Postfix, from userid 1000) id 3A4F0120201; Wed, 19 Dec 2018 11:28:46 +0100 (CET) Date: Wed, 19 Dec 2018 11:28:46 +0100 From: Josef Wolf To: linux-media@vger.kernel.org Subject: SYS_DVBS vs. SYS_DVBS2 Message-ID: <20181219102846.GJ11337@raven.inka.de> Mail-Followup-To: Josef Wolf , linux-media@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hello experts, hope I'm on the correct list for my question. Plese give me a pointer to the correct list if I'm off-topic here. I would like to know how to know whether for a specific program SYS_DVBS or SYS_DVBS2 should be specified to the FE_SET_PROPERTY ioctl() call. Is this somehow broadcasted in some PAT/PMT tables? Or is it possible to simple always specify SYS_DVBS2 and the kernel will manage the backwards compatibilities when a DVB-S transponder is specified in the tuning parameters? Thanks for the help, -- Josef Wolf jw@raven.inka.de