linux-kernel - Re: [PATCH v2 2/3] net: mdio: aspeed: Introduce read write function for c22 and c45

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Date:   Thu, 7 Apr 2022 00:33:54 +0800
From:   POTIN LAI <potin.lai@...ntatw.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Patrick Williams <patrick@...cx.xyz>, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/3] net: mdio: aspeed: Introduce read write function
 for c22 and c45


Andrew Lunn 於 6/04/2022 8:17 pm 寫道:
>> +static int aspeed_mdio_read(struct mii_bus *bus, int addr, int regnum)
>> +{
>> +	dev_dbg(&bus->dev, "%s: addr: %d, regnum: %d\n", __func__, addr,
>> +		regnum);
>> +
>> +	if (regnum & MII_ADDR_C45)
>> +		return aspeed_mdio_read_c45(bus, addr, regnum);
>> +
>> +	return aspeed_mdio_read_c22(bus, addr, regnum);
>> +}
>> +
>>  static int aspeed_mdio_write(struct mii_bus *bus, int addr, int regnum, u16 val)
>>  {
>>  	dev_dbg(&bus->dev, "%s: addr: %d, regnum: %d, val: 0x%x\n",
>>  		__func__, addr, regnum, val);
>>  
>> -	/* Just clause 22 for the moment */
>>  	if (regnum & MII_ADDR_C45)
>> -		return -EOPNOTSUPP;
>> +		return aspeed_mdio_write_c45(bus, addr, regnum, val);
>>  
>> -	return aspeed_mdio_op(bus, ASPEED_MDIO_CTRL_ST_C22, MDIO_C22_OP_WRITE,
>> -			      addr, regnum, val);
>> +	return aspeed_mdio_write_c22(bus, addr, regnum, val);
>>  }
> Hi Portin
>
> Nice structure. This will helper with future cleanup where C22 and C45
> will be completely separated, and the c45 variants will be directly
> passed dev_ad and reg, rather than have to extract them from regnum.
>
> A few process issues.
>
> Please read the netdev FAQ. The subject list should indicate the tree,
> and there should be an patch 0/3 which explains the big picture of
> what the patchset does. 0/3 will then be used for the merge commit.
>
>      Andrew

Hi Andrew,

Thank you for the notice, it looks like I missed sent out patch 0/3. I will resend whole v2 patches again with tree name.


Potin