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=-6.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=no 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 C5E10C48BC2 for ; Wed, 23 Jun 2021 06:15:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AD6A6611AC for ; Wed, 23 Jun 2021 06:15:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229958AbhFWGSP (ORCPT ); Wed, 23 Jun 2021 02:18:15 -0400 Received: from mailgw01.mediatek.com ([60.244.123.138]:46950 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S229934AbhFWGSO (ORCPT ); Wed, 23 Jun 2021 02:18:14 -0400 X-UUID: 042604d903aa4f9fb3863fdeb6f33156-20210623 X-UUID: 042604d903aa4f9fb3863fdeb6f33156-20210623 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1234963530; Wed, 23 Jun 2021 14:15:52 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 23 Jun 2021 14:15:51 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 23 Jun 2021 14:15:51 +0800 From: YP WU To: , , , , , , , CC: , Subject: How to use "DTV_FE_CAPABILITY" command for Frontend.h of Linux DVB Date: Wed, 23 Jun 2021 14:15:51 +0800 Message-ID: <20210623061551.10453-1-yp.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, dvb frontend maintainer: I work at mediatek company. Currently I develop TV with Linux DVB system. I would like to implement the following LNB use cases: user space would like to know if frontend device node have LNB or not. I want to use "DTV_FE_CAPABILITY" to represent above LNB capability, but I am afraid that my usage is not suitable to the original definition. So I would like to consult the following quesitons: 1. The use case for DTV_FE_CAPABILITY in DVB property command. 2. Does it have any restriction for using this command? 3. What’s your suggestion for using this command? File path: include/uapi/linux/dvb/Frontend.h #define DTV_FE_CAPABILITY 16 Sorry to bother you and thanks for your helps. BRs, YP