Received: by 2002:a05:6a10:206:0:0:0:0 with SMTP id 6csp5378318pxj; Tue, 22 Jun 2021 23:17:29 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzbFMB9+DduD4oz2UNvEKaY21RhtaYxgKTMUm+4pfa5liP/PmpuDd0BU6pPwjjnrSfGzWq8 X-Received: by 2002:aa7:d60a:: with SMTP id c10mr9945339edr.369.1624429048798; Tue, 22 Jun 2021 23:17:28 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1624429048; cv=none; d=google.com; s=arc-20160816; b=BCyBuCnncIvgf+8cD4QQ31eapfB7qbqH+d+8/ELCr/mwmB3nVP0I4nYrxYud1SfVk6 2j2SyegQ3BgGAeT6lBOaZHIqq46Uhkh0rtG7xL27FCtEiuBAAa2O+lvFWYaFOv5QTdE5 8qArkCyuuNcQrt4A3Awz7l5c8YeeHtePIObaIIHPi1G+mtD0Ipizhh4sU+8uXimmUHXb I2ikJTZFbaYdnrvQdTrMENl9n9C32ROml8OMtyW4aaIj/1RW1mDoM7JCkz3Tu/OEDqOT SZ6SoVJ6Ifl+bjeAFIpXCTNpJA37dGU+Hn1iKWgYLql7Ft5BkSJCpK+3ccf/J+1aqOwx ZHPQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=+HFA2e4F7ScklanQsIakyH7cH5ILFUbZeRQZwgYIx14=; b=0fVPOXnCGdZlT4emtGYkTzdR+65nJNpc6qcMsGh9Qz+5vEcEM+JqS3qTtZGBljMWMk hHGS7bYA9USBcardYjACEc71m29xa9l2spLtu/fcbtONh5HbE3BspYD5zCu7HiSQvBqa l/S8d/45S4/djlldB8/gzSrEZgMA7AknJnx/xbgb283UN+y5L+0CjIorkwyiU2kiVSx/ uvpFbROkzPXfoYZAIQ/ntZVeqhHvZBdxW01uuJJdc3ikfEMkSOYcCwcTomcsd4Jtcwuj bjkENpSLrm4EVnrnIqcV5uQaTzwujr9WM1K2CfRIKQAtlQUkCJEt+7NGq3WS2gPBUO0I 5M2A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=mediatek.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id m27si2647866eda.40.2021.06.22.23.17.05; Tue, 22 Jun 2021 23:17:28 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=mediatek.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229929AbhFWGSO (ORCPT + 99 others); Wed, 23 Jun 2021 02:18:14 -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