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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 D58FBC83000 for ; Tue, 28 Apr 2020 06:49:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B3082206B9 for ; Tue, 28 Apr 2020 06:49:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588056598; bh=fxHe2iijiSX4RUxeMIFUBkO8/lPNIwZYjBa2OpC513U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=Qf5QhzqcMvFRkOPI/ZTlhE3MZNOGejWT3VmOqch69TDO81V3NVPI0UQk223/GU81W PBm80/V5kDWhb4QX35FgcMx46cjRmEgWmMiao7R38wiAaZv/lD3I4kPeEmLyd1LCbZ rCk6okO55PfSPP/3U6Hs5PWvingmTy3EKlkhonkk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726386AbgD1Gt5 (ORCPT ); Tue, 28 Apr 2020 02:49:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:53816 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725867AbgD1Gt4 (ORCPT ); Tue, 28 Apr 2020 02:49:56 -0400 Received: from localhost (unknown [106.51.110.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1C9E1206B8; Tue, 28 Apr 2020 06:49:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588056596; bh=fxHe2iijiSX4RUxeMIFUBkO8/lPNIwZYjBa2OpC513U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Ykf8YCjeuJhlAs0v/lXtsGJmb0M2yCS9qGj3oLTFJQS0JRJFpmEt2e0DbrhXVXKhg JI9CD1EsvzZwsRUFlhdy/W8NOq7Qh+n4X+J7EjweAG09dvETazDpiSQujAiU8mpQCI 7xy+AaelGx4PuKwdbOsmgjCfDQDa0xFzCvwxEQ8Y= Date: Tue, 28 Apr 2020 12:19:51 +0530 From: Vinod Koul To: Greg KH Cc: Bard Liao , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, tiwai@suse.de, broonie@kernel.org, jank@cadence.com, srinivas.kandagatla@linaro.org, rander.wang@linux.intel.com, ranjani.sridharan@linux.intel.com, hui.wang@canonical.com, pierre-louis.bossart@linux.intel.com, sanyog.r.kale@intel.com, slawomir.blauciak@intel.com, mengdong.lin@intel.com Subject: Re: [RFC 1/5] soundwire: bus_type: add sdw_master_device support Message-ID: <20200428064951.GA56386@vkoul-mobl.Dlink> References: <20200416205524.2043-1-yung-chuan.liao@linux.intel.com> <20200416205524.2043-2-yung-chuan.liao@linux.intel.com> <20200420072631.GW72691@vkoul-mobl> <20200423142451.GA4181720@kroah.com> <20200428043144.GU56386@vkoul-mobl.Dlink> <20200428063736.GB990431@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200428063736.GB990431@kroah.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 28-04-20, 08:37, Greg KH wrote: > On Tue, Apr 28, 2020 at 10:01:44AM +0530, Vinod Koul wrote: > > > > That is not true for everyone, it is only true for Intel, pls call that > > > > out as well... > > > > > > Why is it not true for everyone? How else do you get the pm stuff back > > > to your hardware? > > > > The rest of the world would do using the real controller device. For > > example the soundwire controller on Qualcomm devices is enumerated as a > > DT device and is using these... > > > > If Intel had a standalone controller or enumerated as individual > > functions, it would have been a PCI device and would manage as such > > If it is not a standalone controller, what exactly is it? I thought it > was an acpi device, am I mistaken? > > What is the device that the proper soundwire controller driver binds to > on an Intel-based system? The HDA controller which is a PCI device. The device represent HDA function, DSP and Soundwire controller instances (yes it is typically more than one instance) Thanks -- ~Vinod