linux-kernel - Re: [PATCH V2 5/6] rtc: max77xxx: add RTC driver for Maxim MAX77xxx series RTC IP

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-id: <569C68BE.3030804@samsung.com>
Date:	Mon, 18 Jan 2016 13:23:26 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	Laxman Dewangan <ldewangan@...dia.com>, robh+dt@...nel.org,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	linus.walleij@...aro.org, gnurou@...il.com, lee.jones@...aro.org,
	a.zummo@...ertech.it, alexandre.belloni@...e-electrons.com,
	lgirdwood@...il.com, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
	rtc-linux@...glegroups.com, swarren@...dia.com, treding@...dia.com
Subject: Re: [PATCH V2 5/6] rtc: max77xxx: add RTC driver for Maxim MAX77xxx
 series RTC IP

On 14.01.2016 23:20, Mark Brown wrote:
> On Thu, Jan 14, 2016 at 10:20:56AM +0900, Krzysztof Kozlowski wrote:
> 
>> 2. It has different register address.
>>    We need a register-layout/configuration structure. The logic is the
>> same except few differences (e.g. presence of MAX77802_RTC_AE1).
> 
> Depending on what the differences are either just some variables in the
> driver data that get set on probe with the different registers (if it's
> just the register) or using regmap_field (if things get shifted as well,
> or if it happens to make more sense) should work.

Thanks for the hints!

The addresses for registers are indeed shifted. It is non-linear because
apart of different offset at beginning, a new field appears. Anyway it
would be good for me (or other person doing this work) to get more
knowledge of what regmap API provides.

Best regards,
Krzysztof