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

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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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