netdev - Re: [PATCH 3/7] IBM Akebono: Add support for a new PHY to the IBM emac driver

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Date:	Wed, 06 Nov 2013 11:08:35 +1100
From:	Alistair Popple <alistair@...ple.id.au>
To:	Florian Fainelli <f.fainelli@...il.com>
Cc:	linuxppc-dev@...ts.ozlabs.org,
	"David S. Miller" <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH 3/7] IBM Akebono: Add support for a new PHY to the IBM emac driver

On Tue, 5 Nov 2013 10:47:22 Florian Fainelli wrote:
> [snip]
> 
> > +/* RGMII bridge supports only GMII/TBI and RGMII/RTBI PHYs */
> > +static inline int rgmii_valid_mode(int phy_mode)
> > +{
> > +       return  phy_mode == PHY_MODE_GMII ||
> > +               phy_mode == PHY_MODE_MII ||
> > +               phy_mode == PHY_MODE_RGMII ||
> > +               phy_mode == PHY_MODE_TBI ||
> > +               phy_mode == PHY_MODE_RTBI;
> > +}
> > +
> > +static inline const char *rgmii_mode_name(int mode)
> > +{
> > +       switch (mode) {
> > +       case PHY_MODE_RGMII:
> > +               return "RGMII";
> > +       case PHY_MODE_TBI:
> > +               return "TBI";
> > +       case PHY_MODE_GMII:
> > +               return "GMII";
> > +       case PHY_MODE_MII:
> > +               return "MII";
> > +       case PHY_MODE_RTBI:
> > +               return "RTBI";
> > +       default:
> > +               BUG();
> > +       }
> 
> Any reasons why you are duplicating what is available in
> drivers/of/of_net.c ::of_get_phy_mode()?

Unless I'm missing something of_get_phy_mode() is going the other way. 
rgmii_mode_name() is converting PHY_MODE_* into a human-readable string. I 
couldn't find any obvious kernel method to do this but maybe I missed it?

Regards,

Alistair

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