linux-kernel - Re: [PATCH] net: phy: at803x: support interrupt on 8030 and 8035

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Message-ID: <yw1xoaeylunf.fsf@unicorn.mansr.com>
Date:	Thu, 12 Nov 2015 22:28:36 +0000
From:	Måns Rullgård <mans@...sr.com>
To:	Mason <slash.tmp@...e.fr>
Cc:	Florian Fainelli <f.fainelli@...il.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: phy: at803x: support interrupt on 8030 and 8035

Mason <slash.tmp@...e.fr> writes:

> On 12/11/2015 20:14, Florian Fainelli wrote:
>> On 12/11/15 11:09, Måns Rullgård wrote:
>>> On 12 November 2015 19:06:23 GMT+00:00, Mason wrote:
>>>> On 12/11/2015 18:40, Mans Rullgard wrote:
>>>>> Commit 77a993942 "phy/at8031: enable at8031 to work on interrupt mode"
>>>>> added interrupt support for the 8031 PHY but left out the other two
>>>>> chips supported by this driver.
>>>>>
>>>>> This patch sets the .ack_interrupt and .config_intr functions for the
>>>>> 8030 and 8035 drivers as well.
>>>>>
>>>>> Signed-off-by: Mans Rullgard <mans@...sr.com>
>>>>> ---
>>>>> I have only tested this with an 8035.  I can't find a datasheet for
>>>>> the 8030, but since 8031, 8032, and 8035 all have the same register
>>>>> layout, there's a good chance 8030 does as well.
>>>>> ---
>>>>>  drivers/net/phy/at803x.c | 4 ++++
>>>>>  1 file changed, 4 insertions(+)
>>>>>
>>>>> diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
>>>>> index fabf11d..2d020a3 100644
>>>>> --- a/drivers/net/phy/at803x.c
>>>>> +++ b/drivers/net/phy/at803x.c
>>>>> @@ -308,6 +308,8 @@ static struct phy_driver at803x_driver[] = {
>>>>>  	.flags			= PHY_HAS_INTERRUPT,
>>>>>  	.config_aneg		= genphy_config_aneg,
>>>>>  	.read_status		= genphy_read_status,
>>>>> +	.ack_interrupt		= at803x_ack_interrupt,
>>>>> +	.config_intr		= at803x_config_intr,
>>>>>  	.driver			= {
>>>>>  		.owner = THIS_MODULE,
>>>>>  	},
>>>>> @@ -327,6 +329,8 @@ static struct phy_driver at803x_driver[] = {
>>>>>  	.flags			= PHY_HAS_INTERRUPT,
>>>>>  	.config_aneg		= genphy_config_aneg,
>>>>>  	.read_status		= genphy_read_status,
>>>>> +	.ack_interrupt		= at803x_ack_interrupt,
>>>>> +	.config_intr		= at803x_config_intr,
>>>>>  	.driver			= {
>>>>>  		.owner = THIS_MODULE,
>>>>>  	},
>>>>
>>>> Shouldn't we take the opportunity to clean up the duplicated register
>>>> definitions? (I'll send an informal patch to spur discussion.)
>>>>
>>>> Regards.
>>>
>>> That can be done independently. Feel free to send a patch.
>> 
>> Agreed, that deserve a separate patch.
>
> Isn't there a problem when at803x_set_wol() sets the AT803X_WOL_ENABLE
> bit, but a DISABLE/ENABLE cycle through at803x_config_intr() will
> discard that bit?

Possibly, but fixing that should be yet another patch.

-- 
Måns Rullgård
mans@...sr.com
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