linux-kernel - RE: [PATCH RFC 3/5] Add KSZ8795 switch driver

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Message-ID: <93AF473E2DA327428DE3D46B72B1E9FD4112CBC8@CHN-SV-EXMX02.mchp-main.com>
Date:   Fri, 29 Sep 2017 18:45:19 +0000
From:   <Tristram.Ha@...rochip.com>
To:     <pavel@....cz>
CC:     <andrew@...n.ch>, <muvarov@...il.com>,
        <nathan.leigh.conrad@...il.com>,
        <vivien.didelot@...oirfairelinux.com>, <f.fainelli@...il.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <Woojung.Huh@...rochip.com>
Subject: RE: [PATCH RFC 3/5] Add KSZ8795 switch driver

> > > > > Similar code will be needed by other drivers, right?
> > > >
> > > > Although KSZ8795 and KSZ8895 may use the same code, the other
> > > > chips will have different code.
> > >
> > > Ok, please make sure code is shared between these two.
> >
> > The exact function probably cannot be shared between KSZ8795
> > and KSZ8895 drivers because although the register constants look
> > the same but their exact locations are different in the 2 chips.
> 
> Put the code into header as static inline and include it from both
> places?
> 

Although KSZ8795 and KSZ8895 share the same code when simulating
the PHY register access, even though the exact registers are not the
same, this code needs a little modification for another chip.  It also looks
too large to put in a header.