netdev - Re: [RFC PATCH net-next 1/6] net: ethernet: implement OPEN Alliance control transaction interface

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Date: Thu, 21 Sep 2023 12:27:55 +0000
From: <Parthiban.Veerasooran@...rochip.com>
To: <andrew@...n.ch>
CC: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <robh+dt@...nel.org>,
	<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>, <corbet@....net>,
	<Steen.Hegelund@...rochip.com>, <rdunlap@...radead.org>, <horms@...nel.org>,
	<casper.casan@...il.com>, <netdev@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-doc@...r.kernel.org>, <Horatiu.Vultur@...rochip.com>,
	<Woojung.Huh@...rochip.com>, <Nicolas.Ferre@...rochip.com>,
	<UNGLinuxDriver@...rochip.com>, <Thorsten.Kummermehr@...rochip.com>
Subject: Re: [RFC PATCH net-next 1/6] net: ethernet: implement OPEN Alliance
 control transaction interface

Hi Andrew,

On 13/09/23 7:02 am, Andrew Lunn wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
>> If I understand you correctly, this framework has to include the module
>> initialization as well using the below APIs and has to be compiled as a
>> loadable module so that other vendors module can make use of this, isn't it?
>>
>> module_init(oa_tc6_init);
>> module_exit(oa_tc6_exit);
> 
> You should not need these, unless there is actions which need to be
> taken when the module is loaded. If there are no actions, it is purely
> a library, don't have them. The module dependency tracking code will
> see that the MAC driver modules has dependencies on symbols in this
> library module, and will load it first. The MAC driver is then loaded,
> and the kernel linker will resolve the missing symbols in the MAC
> driver to those in the library. It also means that there is only ever
> one copy of the library in the kernel, even if there is multiple MAC
> drivers using it.
Ah ok. Actually I missed including this library in the Kconfig and Makefile.

So drivers/net/ethernet/Kconfig file should contain the below,

config OA_TC6
          tristate "OPEN Alliance TC6 10BASE-T1x MAC-PHY support"
          depends on SPI
          select PHYLIB 

          help
            This library implements OPEN Alliance TC6 10BASE-T1x MAC-PHY
            Serial Interface protocol for supporting 10BASE-T1x MAC-PHYs.

The drivers/net/ethernet/Makefile file should contain the below,

obj-$(CONFIG_OA_TC6) += oa_tc6.o

Is this you expected right?

Best Regards,
Parthiban V
> 
>         Andrew
>