linux-kernel - Re: [PATCH] i3c: master: dw: split dw-i3c-master.c into master and bus specific parts

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Date:   Fri, 23 Nov 2018 13:50:04 +0100
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     vitor <vitor.soares@...opsys.com>
Cc:     <wsa@...-dreams.de>, <linux-i2c@...r.kernel.org>, <corbet@....net>,
        <linux-doc@...r.kernel.org>, <gregkh@...uxfoundation.org>,
        <arnd@...db.de>, <psroka@...ence.com>, <agolec@...ence.com>,
        <adouglas@...ence.com>, <bfolta@...ence.com>, <dkos@...ence.com>,
        <alicja@...ence.com>, <cwronka@...ence.com>, <sureshp@...ence.com>,
        <rafalc@...ence.com>, <thomas.petazzoni@...tlin.com>, <nm@...com>,
        <robh+dt@...nel.org>, <pawel.moll@....com>, <mark.rutland@....com>,
        <ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <geert@...ux-m68k.org>, <linus.walleij@...aro.org>,
        <Xiang.Lin@...aptics.com>, <linux-gpio@...r.kernel.org>,
        <nsekhar@...com>, <pgaj@...ence.com>, <peda@...ntia.se>,
        <mshettel@...eaurora.org>, <swboyd@...omium.org>,
        <joao.pinto@...opsys.com>
Subject: Re: [PATCH] i3c: master: dw: split dw-i3c-master.c into master and
 bus specific parts

On Fri, 23 Nov 2018 12:39:31 +0000
vitor <vitor.soares@...opsys.com> wrote:

> Hi Boris,
> 
> 
> On 22/11/18 20:02, Boris Brezillon wrote:
> > On Thu, 22 Nov 2018 17:54:54 +0000
> > Vitor Soares <vitor.soares@...opsys.com> wrote:
> >  
> >> From: Vitor Soares <soares@...opsys.com>
> >>
> >> This patch slipts dw-i3c-master.c into three pieces:
> >> 	dw-i3c-master.c - contains the code that interacts directly with the
> >> 	core in master mode.
> >>
> >> 	dw-i3c-platdrv.c - contains the code specific to the platform driver.
> >>
> >> 	dw-i3c-core.h - contains the definitions and declarations shared by
> >> 	dw-i3c-master and dw-i3c-platdrv
> >>
> >> This patch will allow SOC integrators to add their code specific to
> >> DesignWare I3C IP.  
> > Isn't it too early to do this change? Can't we wait until we have a SoC
> > that actually embeds this IP?  
> 
> 
> I'm trying to turn it more flexible so the other can reuse the code.

Looking at the separation you've done here, I don't see why you need
it. All the resources you request are generic, so why not just adding a
new compat in the of_match_table?

> 
> 
> >  
> >> Signed-off-by: Vitor Soares <soares@...opsys.com>
> >> ---
> >>   drivers/i3c/master/Kconfig          |   9 +-
> >>   drivers/i3c/master/Makefile         |   5 +-
> >>   drivers/i3c/master/dw-i3c-core.h    | 214 ++++++++++++++++++++++++++
> >>   drivers/i3c/master/dw-i3c-master.c  | 299 ++----------------------------------
> >>   drivers/i3c/master/dw-i3c-platdrv.c | 112 ++++++++++++++

Just realized the driver is named dw-i3c-master, while the cadence
driver is named i3c-master-cdns.c. I'll send a patch to make that
consistent and follow the initial naming scheme: i3c-master-<ipname>.c.