From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1755201AbbKCP6l (ORCPT <rfc822;w@1wt.eu>);
	Tue, 3 Nov 2015 10:58:41 -0500
Received: from comal.ext.ti.com ([198.47.26.152]:42841 "EHLO comal.ext.ti.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S932469AbbKCP6E (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
	Tue, 3 Nov 2015 10:58:04 -0500
Subject: Re: [PATCH v2 5/6] regulator: tps65086: Add regulator driver for the
 TPS65086 PMIC
To: Mark Brown <broonie@kernel.org>
References: <1446244904-29315-1-git-send-email-afd@ti.com>
 <1446244904-29315-6-git-send-email-afd@ti.com>
 <20151101023735.GE28319@sirena.org.uk>
CC: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Ian Campbell <ijc+devicetree@hellion.org.uk>,
        Kumar Gala <galak@codeaurora.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Alexandre Courbot <gnurou@gmail.com>,
        Samuel Ortiz <sameo@linux.intel.com>, Lee Jones <lee.jones@linaro.org>,
        Liam Girdwood <lgirdwood@gmail.com>, <devicetree@vger.kernel.org>,
        <linux-gpio@vger.kernel.org>, <linux-kernel@vger.kernel.org>
From: "Andrew F. Davis" <afd@ti.com>
Message-ID: <5638D97A.8040306@ti.com>
Date: Tue, 3 Nov 2015 09:57:46 -0600
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101
 Thunderbird/38.3.0
MIME-Version: 1.0
In-Reply-To: <20151101023735.GE28319@sirena.org.uk>
Content-Type: text/plain; charset="windows-1252"; format=flowed
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 10/31/2015 09:37 PM, Mark Brown wrote:
> On Fri, Oct 30, 2015 at 05:41:43PM -0500, Andrew F. Davis wrote:
>
>> +struct tps65086_regulator {
>> +	struct regulator_desc desc;
>> +	unsigned int decay_reg;
>> +	unsigned int decay_mask;
>
> The decay_reg and decay_mask fields appear to be entirely write only,
> why are they present?
>

Not sure what you mean, they are written to differently for each regulator,
and read when setting the decay mode in _probe.

>> +	ret = of_regulator_match(&pdev->dev, pdev->dev.of_node,
>> +				 tps65086_matches,
>> +				 ARRAY_SIZE(tps65086_matches));
>> +	if (ret < 0) {
>> +		dev_err(tps->dev, "Error parsing regulator init data\n");
>> +		return ret;
>> +	}
>
> Please match regulators using the fields in the regulator_desc rather
> than open coding.
>

I need to match to get the driver specific information for each regulator,
if I let regulator_register do it I never get a chance to process the match,
unless there is a callback or something I'm missing.