linux-kernel - Re: [PATCH v3 06/17] staging: sm750fb: rename swI2CInit to sm750_sw_i2c

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Message-ID: <20150910130108.GA20249@sudip-pc>
Date:	Thu, 10 Sep 2015 18:31:08 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Mike Rapoport <mike.rapoport@...il.com>
Cc:	Greg Kroah-Hartman <greg@...ah.com>,
	Teddy Wang <teddy.wang@...iconmotion.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 06/17] staging: sm750fb: rename swI2CInit to
 sm750_sw_i2c_init

On Thu, Sep 10, 2015 at 03:39:58PM +0300, Mike Rapoport wrote:
> Hi Sudip,
> 
> On Thu, Sep 10, 2015 at 10:10:19AM +0530, Sudip Mukherjee wrote:
> > On Wed, Sep 09, 2015 at 01:07:04PM -0700, Greg Kroah-Hartman wrote:
> > > > 
> > > > As far as I understood, the intention for HW is for using i2c
> > > > controller, and SW is for using gpio bit-bang
> > > 
> > > big-bang i2c?  ick.
> > :(
> > Yes, there is a special version of SM750 which uses sw i2c.
> > SM750LE is a special version which only Huawei uses.
> 
> If I'm not mistaken, device variant can be identified in run-time and
> i2c implementation may be selected accordingly. Am I right?
Yes, that is a possibility but I do not have this SM750LE hardware, so
if anything breaks in the sw i2c while trying to unify these two i2c
codes, I will not be able to test.
Maybe Greg can give some idea here about how to proceed.

regards
sudip
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