Re: [PATCH net 1/2] net: phy: Use C45 Helpers in phy_read_status()

[Florian Fainelli]

On 3/1/2019 2:54 AM, Jose Abreu wrote:
> Currently phy_read_status() considers that either the PHY driver has the
> read_status() callback or uses the generic callback.
> 
> For C45 PHYs we need to use the gen10g_read_status() callback.

Right, so we could expect your C45 PHY driver to assign the read_status
callback to gen10g_read_status() if it is appropriate. So far most of
the 10g PHY drivers (cortina, marvell10g, aquantia) have to define their
own read_status() callback to be feature complete. Unlike C22 PHYs that
can really be driven with a simple generic PHY driver model for standard
features, C45 PHYs seem to be quirky enough this does not work anymore.

> 
> Signed-off-by: Jose Abreu <joabreu@xxxxxxxxxxxx>
> Cc: Andrew Lunn <andrew@xxxxxxx>
> Cc: Florian Fainelli <f.fainelli@xxxxxxxxx>
> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
> Cc: Joao Pinto <joao.pinto@xxxxxxxxxxxx>
> ---
>  include/linux/phy.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/include/linux/phy.h b/include/linux/phy.h
> index 333b56d8f746..872899136fdc 100644
> --- a/include/linux/phy.h
> +++ b/include/linux/phy.h
> @@ -1030,6 +1030,8 @@ static inline int phy_read_status(struct phy_device *phydev)
>  
>  	if (phydev->drv->read_status)
>  		return phydev->drv->read_status(phydev);
> +	else if (phydev->is_c45)
> +		return gen10g_read_status(phydev);
>  	else
>  		return genphy_read_status(phydev);
>  }
> 

-- 
Florian