From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752193AbcILQBx (ORCPT ); Mon, 12 Sep 2016 12:01:53 -0400 Received: from mga01.intel.com ([192.55.52.88]:51092 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751008AbcILQBv (ORCPT ); Mon, 12 Sep 2016 12:01:51 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.30,323,1470726000"; d="scan'208";a="1028806747" Message-ID: <1473696075.11323.258.camel@linux.intel.com> Subject: Re: Regulator probe From: Andy Shevchenko To: Mark Brown Cc: "linux-kernel@vger.kernel.org" , "Hunter, Adrian" Date: Mon, 12 Sep 2016 19:01:15 +0300 In-Reply-To: <20160912152744.GB27946@sirena.org.uk> References: <20160901170215.GJ5967@sirena.org.uk> <1473091312.11323.20.camel@linux.intel.com> <20160906102407.GF3950@sirena.org.uk> <1473258241.11323.83.camel@linux.intel.com> <20160909121749.GR27946@sirena.org.uk> <1473425727.11323.144.camel@linux.intel.com> <20160909152952.GS27946@sirena.org.uk> <1473437439.11323.188.camel@linux.intel.com> <20160909163824.GT27946@sirena.org.uk> <1473505415.11323.235.camel@linux.intel.com> <20160912152744.GB27946@sirena.org.uk> Organization: Intel Finland Oy Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.20.5-1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2016-09-12 at 16:27 +0100, Mark Brown wrote: > On Sat, Sep 10, 2016 at 02:03:35PM +0300, Andy Shevchenko wrote: > > > > > Please, correct me if I'm wrong in the following: > > 1) mapping is what kept in the regulator_map_list; > > 2) the only way to list something for this mapping is to use one of > > regulator drivers that will call regulator_register() at the end; > > 3) in case of fixed voltage regulator it prepares configuration and > > description (based on platform code for example) of the regulator > > and > > calls devm_regulator_register(); > > 4) regulator_register() _will not_ add fixed regulator to the > > mapping if > > GPIO is deferred; > > 5) regulator_dev_lookup() didn't see the regulator before > > deferred_probe_initcall() happened. > > > > > If the above is correct, how to add mapping to be seen in 5) ? > > You may need to extend the interfaces offered by the core - one of the > great advantages of an open source kernel like Linux is that you can > modify the whole system if needed. Yeah, the core seems not able to handle my case. So, that's what I was trying to tell. I will look at the code later and see what I can amend there. Thanks! -- Andy Shevchenko Intel Finland Oy