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From: Andy Shevchenko <andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: Luis Oliveira
	<Luis.Oliveira-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>,
	Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>,
	Ramiro Oliveira
	<Ramiro.Oliveira-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
	jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
	mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
	linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	CARLOS.PALMINHA-HKixBCOQz3hWk0Htik3J/w@public.gmane.org
Subject: Re: [PATCH v2 3/4] Device bindings documentation updated ACPI-enabled platforms not currently supported
Date: Fri, 21 Oct 2016 13:54:32 +0300	[thread overview]
Message-ID: <1477047272.6423.6.camel@linux.intel.com> (raw)
In-Reply-To: <76ab13e9-9aa5-97c3-2328-928bbcef9877-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>

On Fri, 2016-10-21 at 10:56 +0100, Luis Oliveira wrote:
> Since practically 90% of the code is shared between master and slave,
> I was
> thinking if it will be acceptable to use the same driver for both but
> differentiate the master/slave mode by the compatible strings.

It might be possible to split like other drivers do:

1. Core part (i2c-designware-core.c)
2. Master part (i2c-designware-master.c)
3. Slave part (i2c-designware-slave.c)
4. Glue drivers (like: i2c-designware-platdrv.c)

> 
> Thanks,
> Luis
> 
> On 10/18/2016 16:17, Wolfram Sang wrote:
> > > This is needed because the configuration is different and the i2c-
> > > designware
> > > cannot be master/slave without a reset. To resolve that I added
> > > this property
> > > to bind it as a slave when needed.
> > 
> > Aww, pity that the HW can't do that. Do you have details why?
> > 
> > If that is really a HW limitation, then I'd suggest having a
> > seperate
> > driver for slave-only mode so we can differentiate by compatible
> > strings.
> > 
> 
> 

-- 
Andy Shevchenko <andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Intel Finland Oy
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  parent reply	other threads:[~2016-10-21 10:54 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-14 16:52 [PATCH v2 0/4] Add slave mode to Synopsys I2C driver Luis.Oliveira
2016-10-14 16:52 ` [PATCH v2 1/4] Factor out _master() parts of code and identify as much as possible all related with MASTER mode Luis.Oliveira
     [not found]   ` <923d41c5a11538963fe5b49d181cfa8d1fec5756.1476462204.git.lolivei-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
2016-10-21 10:37     ` Andy Shevchenko
2016-10-14 16:52 ` [PATCH v2 2/4] Added I2C_SLAVE as a dependency to I2C_DESIGNWARE_CORE Enable _slave() mode Review of the pm_runtime...() methods and cleaning Luis.Oliveira
2016-10-21 10:52   ` Andy Shevchenko
2016-10-14 16:52 ` [PATCH v2 3/4] Device bindings documentation updated ACPI-enabled platforms not currently supported Luis.Oliveira
2016-10-14 17:30   ` Mark Rutland
2016-10-14 18:20     ` Wolfram Sang
2016-10-18 14:51       ` Ramiro Oliveira
2016-10-18 15:17         ` Wolfram Sang
2016-10-21  9:56           ` Luis Oliveira
     [not found]             ` <76ab13e9-9aa5-97c3-2328-928bbcef9877-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
2016-10-21 10:54               ` Andy Shevchenko [this message]
2016-11-08 14:18                 ` Luis Oliveira
2016-10-18 14:50     ` Ramiro Oliveira
2016-10-18 14:33   ` Rob Herring
2016-10-14 16:52 ` [PATCH v2 4/4] Cleaned the code, no functional changes Luis.Oliveira
     [not found]   ` <3df96f37129d81eb2275e0151d1aab6ae43fbaa2.1476462204.git.lolivei-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
2016-10-21 10:55     ` Andy Shevchenko

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