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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 3EC44C35646 for ; Fri, 21 Feb 2020 18:08:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 187C0208E4 for ; Fri, 21 Feb 2020 18:08:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729225AbgBUSI1 (ORCPT ); Fri, 21 Feb 2020 13:08:27 -0500 Received: from muru.com ([72.249.23.125]:56780 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725995AbgBUSI0 (ORCPT ); Fri, 21 Feb 2020 13:08:26 -0500 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id 060D9807E; Fri, 21 Feb 2020 18:09:08 +0000 (UTC) Date: Fri, 21 Feb 2020 10:08:21 -0800 From: Tony Lindgren To: Peter Ujfalusi Cc: Sebastian Reichel , Kuninori Morimoto , Mark Brown , Liam Girdwood , Jaroslav Kysela , Takashi Iwai , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, Aaro Koskinen , "Arthur D ." , Jarkko Nikula , Merlijn Wajer , Pavel Machek Subject: Re: [PATCH] ASoC: ti: Allocate dais dynamically for TDM and audio graph card Message-ID: <20200221180821.GA37466@atomide.com> References: <20200212143543.GI64767@atomide.com> <346dfd2b-23f8-87e0-6f45-27a5099b1066@ti.com> <20200214170322.GZ64767@atomide.com> <20200217231001.GC35972@atomide.com> <5402eba8-4f84-0973-e11b-6ab2667ada85@ti.com> <20200218211631.fxojsxzvttoidfed@earth.universe> <20200220201559.GX37466@atomide.com> <9ea8239f-3b2d-8206-95ee-2789fbae83d4@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9ea8239f-3b2d-8206-95ee-2789fbae83d4@ti.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Peter Ujfalusi [200221 13:21]: > Hi Tony, > > On 20/02/2020 22.15, Tony Lindgren wrote: > > * Peter Ujfalusi [200220 14:16]: > >> On 18/02/2020 23.16, Sebastian Reichel wrote: > >>> I suppose in the end its a question if generic card can provide TDM > >>> support. > >> > >> Sure it can, but can it handle the switching between the paths based on > >> use cases? > >> There should be machine level DAPM widgets to kick codec2codec (MDM6600 > >> - CPAC_voice for example) and also to make sure that when you switch > >> between them the system is not going to get misconfigured. > >> Switching between CPAC and BT route during call? > >> Not allowing VoIP while on call, etc. > > > > Well I guess the key thing to check here is if it's enough to > > keep track of things in the cpcap codec driver. If cpcap is always > > involved, that should be sufficient. > > The codec driver should keep track on what it can do, but should not > start policing the outside world. > The machine driver knows the connections and should tell the components > on what to do. OK that makes senes to me. So I guess now the question is if we can maintain this state in snd-soc-audio-graph-card instead of needing a custom machine driver. Regards, Tony