linux-kernel - Re: [PATCH v8 2/3] I2C: mediatek: Add driver for MediaTek I2C controller

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Date:	Wed, 20 May 2015 13:33:52 +0800
From:	Eddie Huang <eddie.huang@...iatek.com>
To:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
CC:	Matthias Brugger <matthias.bgg@...il.com>,
	Mark Rutland <mark.rutland@....com>,
	Xudong Chen <xudong.chen@...iatek.com>,
	srv_heupstream <srv_heupstream@...iatek.com>,
	Pawel Moll <pawel.moll@....com>,
	Wolfram Sang <wsa@...-dreams.de>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Liguo Zhang <liguo.zhang@...iatek.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	<linux-mediatek@...ts.infradead.org>, <linux-i2c@...r.kernel.org>,
	Sascha Hauer <kernel@...gutronix.de>,
	Kumar Gala <galak@...eaurora.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v8 2/3] I2C: mediatek: Add driver for MediaTek I2C
 controller

Hi Uwe,

On Tue, 2015-05-19 at 21:49 +0200, Uwe Kleine-König wrote:
> Hello Matthias,
> 
> On Tue, May 19, 2015 at 04:48:23PM +0200, Matthias Brugger wrote:
> > 2015-05-18 20:43 GMT+02:00 Uwe Kleine-König <u.kleine-koenig@...gutronix.de>:
> > > On Tue, May 19, 2015 at 12:40:08AM +0800, Eddie Huang wrote:
> > >> [...]
> > >>  drivers/i2c/busses/i2c-mt65xx.c | 675 ++++++++++++++++++++++++++++++++++++++++
> > >> [...]
> > >> +#define I2C_DRV_NAME         "mt-i2c"
> > > i2c-mt65xx ?
> > 
> > As this works for all SoCs so far, I would propose: i2c-mtk
> Hmm, currently we have:
> 
>   - #define I2C_DRV_NAME mt-i2c
Change to i2c-mt65xx.

>   - dt-compatibles: "mediatek,mt6577-i2c" + "mediatek,mt6589-i2c"

We hope all mobile chip series use the same I2C driver.
I don't list all chips in driver to avoid too many dt-compatibles.
Only list chips that are different from others.

>   - function prefix: mtk_i2c_
Maybe use i2c-mt65xx_ is better, but I tend to keep mtk_i2c_ after these
review rounds.

>   - filename: i2c-mt65xx.c
>   - Kconfig symbol: I2C_MT65XX
> 
> Getting some harmonization here would definitly be nice.
> 

Eddie Huang


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