linux-kernel - RE: [rtc-linux] [PATCH V1 3/6] rtc: da9062: DA9062 RTC driver

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Message-ID: <6ED8E3B22081A4459DAC7699F3695FB7014B22A3F3@SW-EX-MBX02.diasemi.com>
Date:	Wed, 13 May 2015 12:31:36 +0000
From:	"Opensource [Steve Twiss]" <stwiss.opensource@...semi.com>
To:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
CC:	Alessandro Zummo <a.zummo@...ertech.it>,
	LINUXKERNEL <linux-kernel@...r.kernel.org>,
	RTCLINUX <rtc-linux@...glegroups.com>,
	DEVICETREE <devicetree@...r.kernel.org>,
	David Dajun Chen <david.chen@...semi.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	"Ian Campbell" <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	LINUXINPUT <linux-input@...r.kernel.org>,
	LINUXWATCHDOG <linux-watchdog@...r.kernel.org>,
	Lee Jones <lee.jones@...aro.org>,
	"Liam Girdwood" <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	Rob Herring <robh+dt@...nel.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	"Support Opensource" <Support.Opensource@...semi.com>,
	Wim Van Sebroeck <wim@...ana.be>
Subject: RE: [rtc-linux] [PATCH V1 3/6] rtc: da9062: DA9062 RTC driver

On 10 May 2015 10:59 Alexandre Belloni wrote:

> Hi,
> 
> On 17/04/2015 at 15:23:33 +0100, S Twiss wrote :
> > From: S Twiss <stwiss.opensource@...semi.com>
> >
> > Add RTC driver support for DA9062

[...]

> This is an almost exact copy of drivers/rtc/rtc-da9063.c, apart from the
> retry mechanism in read_time. Can you simply add support for the da9062
> in that driver?

Hi Alexandre,

Something similar is being discussed for the OnKey component of the DA9062.
https://lkml.org/lkml/2015/4/24/304

It is only the OnKey and RTC components that are similar to the DA9063 chip
and I was hoping to keep the 62 RTC separate in this case ... however it should
definitely be possible to re-use the DA9063 RTC driver if this is your requirement.
If this will block my submission of the DA9062 then I will drop the RTC from my
next patch set and try to re-work the existing 63 RTC driver accordingly.

I think this sort of thing has been done before:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/rtc/rtc-pm8xxx.c
 ... at first glance -- it seems to support that sort of thing.

I guess it would be possible to rename the da9063-rtc to something more sensible like
da9xxx-rtc.c if this goes ahead?

Regards,
Steve
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