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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 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 4F91DC352BE for ; Fri, 17 Apr 2020 09:24:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 36E44221EA for ; Fri, 17 Apr 2020 09:24:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730200AbgDQJYD (ORCPT ); Fri, 17 Apr 2020 05:24:03 -0400 Received: from lhrrgout.huawei.com ([185.176.76.210]:2057 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730169AbgDQJYD (ORCPT ); Fri, 17 Apr 2020 05:24:03 -0400 Received: from lhreml710-chm.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id AC71BA26D8F55EC5BE24; Fri, 17 Apr 2020 10:24:02 +0100 (IST) Received: from localhost (10.47.87.249) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1913.5; Fri, 17 Apr 2020 10:24:02 +0100 Date: Fri, 17 Apr 2020 10:23:50 +0100 From: Jonathan Cameron To: Chris Ruehl CC: Subject: Re: inquiry: where to place iio/ bandpass filter driver Message-ID: <20200417102350.00003a28@Huawei.com> In-Reply-To: <55472b69-c587-ca04-d3b9-c8615e6a652d@gtsys.com.hk> References: <55472b69-c587-ca04-d3b9-c8615e6a652d@gtsys.com.hk> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; i686-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.47.87.249] X-ClientProxiedBy: lhreml723-chm.china.huawei.com (10.201.108.74) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org On Thu, 16 Apr 2020 11:48:31 +0800 Chris Ruehl wrote: > Hi, > > I'm working on implementation for ltc6602 dual match bandpass filter spi > driver. > The driver tree has a iio/frequency which has PLLs at time beeing and > I wondering to drop my driver there or have a new directory > freqfilter or bpf ? > > This isn't urgent, but would be nice to know. > Perhaps iio/afe? It's a type of analog front end (or might be used as such). Is the intent to wrap these up as a consumer of an ADC? So they ultimately provide a unified device presentation to userspace of the ADC + filters. Or are we looking at simply controlling a filter which doesn't connect to an ADC or DAC visible to us? I'm not against a new directory for filters though. Don't be specific on the type unless we need to be :) Jonathan > Regards > Chris