linux-kernel - RE: [PATCH RESEND net-next 17/18] net: phy: adin: implement generic .handle

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Date:   Sat, 14 Nov 2020 06:38:12 +0000
From:   "Ardelean, Alexandru" <alexandru.Ardelean@...log.com>
To:     Ioana Ciornei <ciorneiioana@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Ioana Ciornei <ioana.ciornei@....com>
Subject: RE: [PATCH RESEND net-next 17/18] net: phy: adin: implement generic
 .handle_interrupt() callback



> -----Original Message-----
> From: Ioana Ciornei <ciorneiioana@...il.com>
> Sent: Friday, November 13, 2020 6:52 PM
> To: Andrew Lunn <andrew@...n.ch>; Heiner Kallweit <hkallweit1@...il.com>;
> Russell King <linux@...linux.org.uk>; Florian Fainelli <f.fainelli@...il.com>;
> Jakub Kicinski <kuba@...nel.org>; netdev@...r.kernel.org; linux-
> kernel@...r.kernel.org
> Cc: Ioana Ciornei <ioana.ciornei@....com>; Ardelean, Alexandru
> <alexandru.Ardelean@...log.com>
> Subject: [PATCH RESEND net-next 17/18] net: phy: adin: implement generic
> .handle_interrupt() callback
> 
> [External]
> 
> From: Ioana Ciornei <ioana.ciornei@....com>
> 
> In an attempt to actually support shared IRQs in phylib, we now move the
> responsibility of triggering the phylib state machine or just returning IRQ_NONE,
> based on the IRQ status register, to the PHY driver. Having
> 3 different IRQ handling callbacks (.handle_interrupt(),
> .did_interrupt() and .ack_interrupt() ) is confusing so let the PHY driver
> implement directly an IRQ handler like any other device driver.
> Make this driver follow the new convention.
> 

Acked-by: Alexandru Ardelean <alexandru.ardelean@...log.com>

> Cc: Alexandru Ardelean <alexandru.ardelean@...log.com>
> Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
> ---
>  drivers/net/phy/adin.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/drivers/net/phy/adin.c b/drivers/net/phy/adin.c index
> 3727b38addf7..ba24434b867d 100644
> --- a/drivers/net/phy/adin.c
> +++ b/drivers/net/phy/adin.c
> @@ -479,6 +479,24 @@ static int adin_phy_config_intr(struct phy_device
> *phydev)
>  			      ADIN1300_INT_MASK_EN);
>  }
> 
> +static irqreturn_t adin_phy_handle_interrupt(struct phy_device *phydev)
> +{
> +	int irq_status;
> +
> +	irq_status = phy_read(phydev, ADIN1300_INT_STATUS_REG);
> +	if (irq_status < 0) {
> +		phy_error(phydev);
> +		return IRQ_NONE;
> +	}
> +
> +	if (!(irq_status & ADIN1300_INT_LINK_STAT_CHNG_EN))
> +		return IRQ_NONE;
> +
> +	phy_trigger_machine(phydev);
> +
> +	return IRQ_HANDLED;
> +}
> +
>  static int adin_cl45_to_adin_reg(struct phy_device *phydev, int devad,
>  				 u16 cl45_regnum)
>  {
> @@ -879,6 +897,7 @@ static struct phy_driver adin_driver[] = {
>  		.set_tunable	= adin_set_tunable,
>  		.ack_interrupt	= adin_phy_ack_intr,
>  		.config_intr	= adin_phy_config_intr,
> +		.handle_interrupt = adin_phy_handle_interrupt,
>  		.get_sset_count	= adin_get_sset_count,
>  		.get_strings	= adin_get_strings,
>  		.get_stats	= adin_get_stats,
> @@ -902,6 +921,7 @@ static struct phy_driver adin_driver[] = {
>  		.set_tunable	= adin_set_tunable,
>  		.ack_interrupt	= adin_phy_ack_intr,
>  		.config_intr	= adin_phy_config_intr,
> +		.handle_interrupt = adin_phy_handle_interrupt,
>  		.get_sset_count	= adin_get_sset_count,
>  		.get_strings	= adin_get_strings,
>  		.get_stats	= adin_get_stats,
> --
> 2.28.0