netdev - Re: [PATCH net-next v3 2/5] net: stmmac: introduce pcs_init/pcs

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Message-ID: <77722ced-4956-0e70-9492-c7b2e8557253@bootlin.com>
Date: Wed, 17 Apr 2024 11:30:09 +0200 (CEST)
From: Romain Gantois <romain.gantois@...tlin.com>
To: Serge Semin <fancer.lancer@...il.com>
cc: Romain Gantois <romain.gantois@...tlin.com>, 
    "David S. Miller" <davem@...emloft.net>, 
    Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
    Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>, 
    Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
    Conor Dooley <conor+dt@...nel.org>, 
    Geert Uytterhoeven <geert+renesas@...der.be>, 
    Magnus Damm <magnus.damm@...il.com>, 
    Alexandre Torgue <alexandre.torgue@...s.st.com>, 
    Jose Abreu <joabreu@...opsys.com>, 
    Maxime Coquelin <mcoquelin.stm32@...il.com>, 
    Russell King <linux@...linux.org.uk>, 
    Clément Léger <clement.leger@...tlin.com>, 
    Thomas Petazzoni <thomas.petazzoni@...tlin.com>, netdev@...r.kernel.org, 
    devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
    linux-renesas-soc@...r.kernel.org, 
    linux-stm32@...md-mailman.stormreply.com, 
    linux-arm-kernel@...ts.infradead.org, 
    "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>, 
    Maxime Chevallier <maxime.chevallier@...tlin.com>
Subject: Re: [PATCH net-next v3 2/5] net: stmmac: introduce pcs_init/pcs_exit
 stmmac operations

Hi Serge,

On Tue, 16 Apr 2024, Serge Semin wrote:

> I am currently working on my Memory-mapped DW XPCS patchset cooking:
> https://lore.kernel.org/netdev/20231205103559.9605-1-fancer.lancer@gmail.com/
> The changes in this series seems to intersect to what is/will be
> introduced in my patchset. In particular as before I am going to
> use the "pcs-handle" property for getting the XPCS node. If so what
> about collecting PCS-related things in a single place. Like this:
> 
> int stmmac_xpcs_setup(struct net_device *ndev)
> {
> 	...
> 
> 	if (priv->plat->pcs_init) {
> 		return priv->plat->pcs_init(priv); /* Romain' part */
>	} else if (fwnode_property_present(priv->plat->port_node, "pcs-handle")) {
> 		/* My DW XPCS part */
> 	} else if (priv->plat->mdio_bus_data && priv->plat->mdio_bus_data->has_xpcs) {
> 		/* Currently implemented procedure */
> 	}
> 
> 	...
> }

That seems like a good idea to me, although those setup functions would have to 
be renamed to stmmac_pcs_setup/exit.

Thanks,

-- 
Romain Gantois, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com