netdev - Re: [PATCH net-next 5/5] net: stmmac: use PCS supported

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Message-ID: <20241217141912.34cdd5ae@fedora.home>
Date: Tue, 17 Dec 2024 14:19:12 +0100
From: Maxime Chevallier <maxime.chevallier@...tlin.com>
To: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>, Jose Abreu
 <joabreu@...opsys.com>, Andrew Lunn <andrew+netdev@...n.ch>,
 davem@...emloft.net, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
 <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Maxime Coquelin
 <mcoquelin.stm32@...il.com>, Alexis Lothoré
 <alexis.lothore@...tlin.com>, Thomas Petazzoni
 <thomas.petazzoni@...tlin.com>, netdev@...r.kernel.org,
 linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 5/5] net: stmmac: use PCS supported_interfaces

Hi Russell,

On Fri, 13 Dec 2024 19:35:12 +0000
"Russell King (Oracle)" <rmk+kernel@...linux.org.uk> wrote:

> Use the PCS' supported_interfaces member to build the MAC level
> supported_interfaces bitmap.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> ---
>  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index d45fd7a3acd5..0e45c4a48bb5 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -1206,6 +1206,7 @@ static int stmmac_phy_setup(struct stmmac_priv *priv)
>  	struct stmmac_mdio_bus_data *mdio_bus_data;
>  	int mode = priv->plat->phy_interface;
>  	struct fwnode_handle *fwnode;
> +	struct phylink_pcs *pcs;
>  	struct phylink *phylink;
>  
>  	priv->phylink_config.dev = &priv->dev->dev;
> @@ -1227,8 +1228,14 @@ static int stmmac_phy_setup(struct stmmac_priv *priv)
>  
>  	/* If we have an xpcs, it defines which PHY interfaces are supported. */
>  	if (priv->hw->xpcs)
> -		xpcs_get_interfaces(priv->hw->xpcs,
> -				    priv->phylink_config.supported_interfaces);
> +		pcs = xpcs_to_phylink_pcs(priv->hw->xpcs);
> +	else
> +		pcs = priv->hw->phylink_pcs;
> +
> +	if (pcs)
> +		phy_interface_or(priv->phylink_config.supported_interfaces,
> +				 priv->phylink_config.supported_interfaces,
> +				 pcs->supported_interfaces);
>  
>  	fwnode = priv->plat->port_node;
>  	if (!fwnode)

I think that we could even make xpcs_get_interfaces a static
non-exported function now :) But this can be done in a subsequent patch.

Thanks for that work !

Reviewed-by: Maxime Chevallier <maxime.chevallier@...tlin.com>

Maxime