linux-kernel - Re: [PATCH v2 net-next 3/9] net: ethernet: mtk_eth_soc: add MTK_NETSYS

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Message-ID: <ZK+ibBKWFRniQ8rK@shell.armlinux.org.uk>
Date:   Thu, 13 Jul 2023 08:06:20 +0100
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Daniel Golle <daniel@...rotopia.org>
Cc:     netdev@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Felix Fietkau <nbd@....name>, John Crispin <john@...ozen.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Mark Lee <Mark-MC.Lee@...iatek.com>,
        Lorenzo Bianconi <lorenzo@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Bjørn Mork <bjorn@...k.no>,
        Florian Fainelli <f.fainelli@...il.com>,
        Greg Ungerer <gerg@...nel.org>
Subject: Re: [PATCH v2 net-next 3/9] net: ethernet: mtk_eth_soc: add
 MTK_NETSYS_V1 capability bit

On Thu, Jul 13, 2023 at 03:18:23AM +0100, Daniel Golle wrote:
> From: Lorenzo Bianconi <lorenzo@...nel.org>
> 
> Introduce MTK_NETSYS_V1 bit in the device capabilities for
> MT7621/MT7622/MT7623/MT7628/MT7629 SoCs.
> Use !MTK_NETSYS_V1 instead of MTK_NETSYS_V2 in the driver codebase.
> This is a preliminary patch to introduce support for MT7988 SoC.

Rather than using capability bits for versions, would it make more
sense to use an integer for this, so you can do:

	if (eth->soc->netsys_version >= 2) {
		version 2 and later stuff
	} else {
		previous version stuff
	}

?

I'm just thinking ahead to when we end up with stuff that v1 and v2
need but v3 and later don't.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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