From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=TVdy=PP=vger.kernel.org=linux-wireless-owner@kernel.org>
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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham
	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 4E4FBC43387
	for <linux-wireless@archiver.kernel.org>; Mon,  7 Jan 2019 15:18:54 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [209.132.180.67])
	by mail.kernel.org (Postfix) with ESMTP id 1C6402173C
	for <linux-wireless@archiver.kernel.org>; Mon,  7 Jan 2019 15:18:54 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1729658AbfAGPSx (ORCPT
        <rfc822;linux-wireless@archiver.kernel.org>);
        Mon, 7 Jan 2019 10:18:53 -0500
Received: from muru.com ([72.249.23.125]:60234 "EHLO muru.com"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1729384AbfAGPSx (ORCPT <rfc822;linux-wireless@vger.kernel.org>);
        Mon, 7 Jan 2019 10:18:53 -0500
Received: from atomide.com (localhost [127.0.0.1])
        by muru.com (Postfix) with ESMTPS id 2A9EB813A;
        Mon,  7 Jan 2019 15:18:58 +0000 (UTC)
Date:   Mon, 7 Jan 2019 07:18:49 -0800
From:   Tony Lindgren <tony@atomide.com>
To:     Ulf Hansson <ulf.hansson@linaro.org>
Cc:     "Reizer, Eyal" <eyalr@ti.com>, Kalle Valo <kvalo@codeaurora.org>,
        KISHON VIJAY ABRAHAM <kishon@ti.com>,
        "Mishol, Guy" <guym@ti.com>,
        "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
        linux-omap <linux-omap@vger.kernel.org>,
        Anders Roxell <anders.roxell@linaro.org>,
        John Stultz <john.stultz@linaro.org>,
        Ricardo Salveti <rsalveti@rsalveti.net>
Subject: Re: [EXTERNAL] Re: [PATCH] wlcore: Fix bringing up wlan0 again if
 powered down briefly
Message-ID: <20190107151849.GC5544@atomide.com>
References: <20181217164207.20081-1-tony@atomide.com>
 <CAPDyKFoLnNWsBfaUwqwL31J=zb0UOQjXUKi7Sj0AUsnNoC6bYg@mail.gmail.com>
 <20181218155439.GB6707@atomide.com>
 <CAPDyKFr2xx6fmdgjd10C1jekWg-yZPk32fGWEPO2PyexjofJ1A@mail.gmail.com>
 <20181220231401.GG6707@atomide.com>
 <c22e2ab61b494ea0852c0f4654fef92d@ti.com>
 <20181223160226.GK6707@atomide.com>
 <CAPDyKFoEOGACs4Wnm7UgKab2b1-7+v8+31DpC+p=8XxcQhSpcQ@mail.gmail.com>
 <20181228195903.GX6707@atomide.com>
 <CAPDyKFq9XmRueJEFKVb03hqLuoB84TGjrdvEjre46ezYbk_wgw@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAPDyKFq9XmRueJEFKVb03hqLuoB84TGjrdvEjre46ezYbk_wgw@mail.gmail.com>
User-Agent: Mutt/1.11.1 (2018-12-01)
Sender: linux-wireless-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-wireless.vger.kernel.org>
X-Mailing-List: linux-wireless@vger.kernel.org

* Ulf Hansson <ulf.hansson@linaro.org> [190102 12:02]:
>
> However, if this is about an out-of-band IRQ line, instead of using
> the SDIO IRQs on DAT1, I think management of that, belongs in the wlan
> (or gpiochip) layers.

Yes this can be handled at the gpiochip layer.

> We have to distinguish if "down" has a strict requirement to power off
> the wlan-chip.
> 
> For example, in "flight mode", is it okay to leave the wlan chip
> powered on and thus potentially also having its radio part active?

I don't know. If unsure, we should at least have that possibility
available for future versions if needed. It might also help a bit
with PM measurements :)

Regards,

Tony