netdev - RE: [RFC/PATCH 09/18] ravb: Add half_duplex to struct ravb_hw

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Message-ID: <OS0PR01MB592254EC06E320BC261A2F5086A69@OS0PR01MB5922.jpnprd01.prod.outlook.com>
Date:   Sun, 26 Sep 2021 15:51:38 +0000
From:   Biju Das <biju.das.jz@...renesas.com>
To:     Sergey Shtylyov <s.shtylyov@....ru>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
CC:     Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>,
        Andrew Lunn <andrew@...n.ch>,
        Sergei Shtylyov <sergei.shtylyov@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Adam Ford <aford173@...il.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-renesas-soc@...r.kernel.org" 
        <linux-renesas-soc@...r.kernel.org>,
        Chris Paterson <Chris.Paterson2@...esas.com>,
        Biju Das <biju.das@...renesas.com>
Subject: RE: [RFC/PATCH 09/18] ravb: Add half_duplex to struct ravb_hw_info

Hi Sergei,

> Subject: Re: [RFC/PATCH 09/18] ravb: Add half_duplex to struct
> ravb_hw_info
> 
> On 9/23/21 5:08 PM, Biju Das wrote:
> 
> > RZ/G2L supports half duplex mode.
> > Add a half_duplex hw feature bit to struct ravb_hw_info for supporting
> > half duplex mode for RZ/G2L.
> >
> > Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
> [...]
> 
> Reviewed-by: Sergey Shtylyov <s.shtylyov@....ru>
> 
>    Just a little bit of change needed...
> 
> [...]
> > diff --git a/drivers/net/ethernet/renesas/ravb_main.c
> > b/drivers/net/ethernet/renesas/ravb_main.c
> > index 5d18681582b9..04bff44b7660 100644
> > --- a/drivers/net/ethernet/renesas/ravb_main.c
> > +++ b/drivers/net/ethernet/renesas/ravb_main.c
> > @@ -1076,6 +1076,18 @@ static int ravb_poll(struct napi_struct *napi,
> int budget)
> >  	return budget - quota;
> >  }
> >
> > +static void ravb_set_duplex_rgeth(struct net_device *ndev) {
> > +	struct ravb_private *priv = netdev_priv(ndev);
> > +	u32 ecmr = ravb_read(ndev, ECMR);
> > +
> > +	if (priv->duplex > 0)	/* Full */
> > +		ecmr |=  ECMR_DM;
> > +	else			/* Half */
> > +		ecmr &= ~ECMR_DM;
> > +	ravb_write(ndev, ecmr, ECMR);
> 
>    I think we should do that like sh_eth.c:
> 
> 	ravb_modify(ndev, ECMR, ECMR_DM, priv->duplex > 0 ? ECMR_DM : 0);
> 

I have prepared a patch with this changes and also renamed the function "ravb_set_duplex_rgeth" to " ravb_set_duplex_gbeth"
As you suggested.

Regards,
Biju