linux-kernel - Re: [PATCH] net: phy: marvell: Enable interrupt function on LED2 pin

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Message-ID: <871sfs1crh.fsf@gmail.com>
Date:   Fri, 06 Apr 2018 19:10:58 +0200
From:   Esben Haabendal <esben.haabendal@...il.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Bhadram Varka <vbhadram@...dia.com>,
        Rasmus Villemoes <rasmus.villemoes@...vas.dk>,
        Florian Fainelli <f.fainelli@...il.com>,
        open list <linux-kernel@...r.kernel.org>,
        "netdev\@vger.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] net: phy: marvell: Enable interrupt function on LED2 pin

Andrew Lunn <andrew@...n.ch> writes:

>> diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index
>> 0e0978d8a0eb..f03a510f1247 100644
>> --- a/drivers/net/phy/marvell.c
>> +++ b/drivers/net/phy/marvell.c
>> @@ -457,6 +457,21 @@ static int marvell_of_reg_init(struct phy_device
>> *phydev) } #endif /* CONFIG_OF_MDIO */
>>  
>> +static int m88e1318_config_intr(struct phy_device *phydev) {
>> +	int err;
>> +
>> +	err = marvell_config_intr(phydev);
>> +	if (err)
>> +		return err;
>> +
>> +	/* Setup LED[2] as interrupt pin (active low) */
>> +	return phy_modify(phydev, MII_88E1318S_PHY_LED_TCR,
>> +			  MII_88E1318S_PHY_LED_TCR_FORCE_INT,
>> +			  MII_88E1318S_PHY_LED_TCR_INTn_ENABLE |
>> +			  MII_88E1318S_PHY_LED_TCR_INT_ACTIVE_LOW);
>> 
>> Can we move this part of the code to m88e1121_config_init() ?
>> 
>> Every time whether we disable or enable the interrupts this part of code
>> will execute.
>
> Yes, doing this once would be better. But please allow the LED pin to
> be used as an LED when not using interrupts. phy_interrupt_is_valid()
> should be involved somehow.

This should be addressed in v2 of the patch which I have already posted.

/Esben