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[PATCH] net: arc_emac: switch to phy_start()/phy_stop()

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  [PATCH] net: arc_emac: switch to phy_start()/phy_stop() Alexander Kochetkov <al.kochet@gmail.com> - 2017-04-19 16:40 +0200
    Re: [PATCH] net: arc_emac: switch to phy_start()/phy_stop() Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2017-04-19 20:30 +0200
    Re: [PATCH] net: arc_emac: switch to phy_start()/phy_stop() Florian Fainelli <f.fainelli@gmail.com> - 2017-04-19 23:10 +0200
      Re: [PATCH] net: arc_emac: switch to phy_start()/phy_stop() Alexander Kochetkov <al.kochet@gmail.com> - 2017-04-19 23:20 +0200

#1626173 — [PATCH] net: arc_emac: switch to phy_start()/phy_stop()

The patch replace phy_start_aneg() with phy_start(). phy_start() call
phy_start_aneg() as a part of startup sequence and allow recover from
error (PHY_HALTED) state.

Also added call phy_stop() to arc_emac_remove() to stop PHY state machine
when MAC is down.

Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
---
 drivers/net/ethernet/arc/emac_main.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c
index abc9f2a..188676d 100644
--- a/drivers/net/ethernet/arc/emac_main.c
+++ b/drivers/net/ethernet/arc/emac_main.c
@@ -434,7 +434,7 @@ static int arc_emac_open(struct net_device *ndev)
 	/* Enable EMAC */
 	arc_reg_or(priv, R_CTRL, EN_MASK);
 
-	phy_start_aneg(ndev->phydev);
+	phy_start(ndev->phydev);
 
 	netif_start_queue(ndev);
 
@@ -556,6 +556,8 @@ static int arc_emac_stop(struct net_device *ndev)
 	napi_disable(&priv->napi);
 	netif_stop_queue(ndev);
 
+	phy_stop(ndev->phydev);
+
 	/* Disable interrupts */
 	arc_reg_clr(priv, R_ENABLE, RXINT_MASK | TXINT_MASK | ERR_MASK);
 
-- 
1.7.9.5

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#1626681

On 04/19/2017 05:29 PM, Alexander Kochetkov wrote:

> The patch replace phy_start_aneg() with phy_start(). phy_start() call

    Replaces.

> phy_start_aneg() as a part of startup sequence and allow recover from
> error (PHY_HALTED) state.
>
> Also added call phy_stop() to arc_emac_remove() to stop PHY state machine

    To arc_emac_stop() maybe?

> when MAC is down.

> Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
> ---
>  drivers/net/ethernet/arc/emac_main.c |    4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c
> index abc9f2a..188676d 100644
> --- a/drivers/net/ethernet/arc/emac_main.c
> +++ b/drivers/net/ethernet/arc/emac_main.c
[...]
> @@ -556,6 +556,8 @@ static int arc_emac_stop(struct net_device *ndev)
>  	napi_disable(&priv->napi);
>  	netif_stop_queue(ndev);
>
> +	phy_stop(ndev->phydev);
> +
>  	/* Disable interrupts */
>  	arc_reg_clr(priv, R_ENABLE, RXINT_MASK | TXINT_MASK | ERR_MASK);
>

MBR, Sergei

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#1626800

On 04/19/2017 07:29 AM, Alexander Kochetkov wrote:
> The patch replace phy_start_aneg() with phy_start(). phy_start() call
> phy_start_aneg() as a part of startup sequence and allow recover from
> error (PHY_HALTED) state.
> 
> Also added call phy_stop() to arc_emac_remove() to stop PHY state machine
> when MAC is down.

This looks fine. If you wanted to go further, you could move the
phy_connect(), phy_disconnect() calls down to the arc_emac_open()
respectively arc_emac_stop() as this would also allow the PHY device to
be fully suspended when the interface is unused.

> 
> Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
> ---
>  drivers/net/ethernet/arc/emac_main.c |    4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c
> index abc9f2a..188676d 100644
> --- a/drivers/net/ethernet/arc/emac_main.c
> +++ b/drivers/net/ethernet/arc/emac_main.c
> @@ -434,7 +434,7 @@ static int arc_emac_open(struct net_device *ndev)
>  	/* Enable EMAC */
>  	arc_reg_or(priv, R_CTRL, EN_MASK);
>  
> -	phy_start_aneg(ndev->phydev);
> +	phy_start(ndev->phydev);
>  
>  	netif_start_queue(ndev);
>  
> @@ -556,6 +556,8 @@ static int arc_emac_stop(struct net_device *ndev)
>  	napi_disable(&priv->napi);
>  	netif_stop_queue(ndev);
>  
> +	phy_stop(ndev->phydev);
> +
>  	/* Disable interrupts */
>  	arc_reg_clr(priv, R_ENABLE, RXINT_MASK | TXINT_MASK | ERR_MASK);
>  
> 


-- 
Florian

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#1626806

> 20 апр. 2017 г., в 0:08, Florian Fainelli <f.fainelli@gmail.com> написал(а):
> 
> This looks fine. If you wanted to go further, you could move the
> phy_connect(), phy_disconnect() calls down to the arc_emac_open()
> respectively arc_emac_stop() as this would also allow the PHY device to
> be fully suspended when the interface is unused.


I’ve checked patch phy_connect() is called from arc_emac_open() and
phy_disconnect() is called from arc_emac_stop().

So, I’ve made mistake in the commit message.

Thank you for review.

> 
> 19 апр. 2017 г., в 21:22, Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> написал(а):
> 
> On 04/19/2017 05:29 PM, Alexander Kochetkov wrote:
> 
>> The patch replace phy_start_aneg() with phy_start(). phy_start() call
> 
>   Replaces.
> 
>> phy_start_aneg() as a part of startup sequence and allow recover from
>> error (PHY_HALTED) state.
>> 
>> Also added call phy_stop() to arc_emac_remove() to stop PHY state machine
> 
>   To arc_emac_stop() maybe?
> 

Sergei, thanks for spell and gramma checking.

Regards,
Alexander.

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