linux-kernel - Re: [PATCH net-next 3/5] net: lan966x: add port module support

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Date:   Thu, 18 Nov 2021 13:59:28 +0100
From:   Horatiu Vultur <horatiu.vultur@...rochip.com>
To:     "Russell King (Oracle)" <linux@...linux.org.uk>
CC:     <davem@...emloft.net>, <kuba@...nel.org>, <robh+dt@...nel.org>,
        <p.zabel@...gutronix.de>, <netdev@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next 3/5] net: lan966x: add port module support

The 11/18/2021 09:59, Russell King (Oracle) wrote:
> 
> On Thu, Nov 18, 2021 at 10:57:03AM +0100, Horatiu Vultur wrote:
> > > > +static void decode_sgmii_word(u16 lp_abil, struct lan966x_port_status *status)
> > > > +{
> > > > +     status->an_complete = true;
> > > > +     if (!(lp_abil & LPA_SGMII_LINK)) {
> > > > +             status->link = false;
> > > > +             return;
> > > > +     }
> > > > +
> > > > +     switch (lp_abil & LPA_SGMII_SPD_MASK) {
> > > > +     case LPA_SGMII_10:
> > > > +             status->speed = SPEED_10;
> > > > +             break;
> > > > +     case LPA_SGMII_100:
> > > > +             status->speed = SPEED_100;
> > > > +             break;
> > > > +     case LPA_SGMII_1000:
> > > > +             status->speed = SPEED_1000;
> > > > +             break;
> > > > +     default:
> > > > +             status->link = false;
> > > > +             return;
> > > > +     }
> > > > +     if (lp_abil & LPA_SGMII_FULL_DUPLEX)
> > > > +             status->duplex = DUPLEX_FULL;
> > > > +     else
> > > > +             status->duplex = DUPLEX_HALF;
> > > > +}
> > >
> > > The above mentioned function will also handle SGMII as well.
> >
> > I noticed that you have phylink_decode_sgmii_work(), so I will try to
> > export it also.
> 
> Another approach would be to split phylink_mii_c22_pcs_decode_state()
> so that the appropriate decode function is selected depending on the
> interface state, which may be a better idea.

I have tried to look for phylink_mii_c22_pcs_decode_state() and I
have found it only here [1], and seems that it depends on [2]. But not
much activity happened to these series since October.
Do you think they will still get in?

[1] https://patchwork.kernel.org/project/netdevbpf/patch/20211022160959.3350916-1-sean.anderson@seco.com/
[2] https://lore.kernel.org/netdev/20211022155914.3347672-1-sean.anderson@seco.com/

> 
> --
> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!

-- 
/Horatiu